KR20210114723A - Laudnry Treatment Apparatus - Google Patents

Abstract

The present application relates to a clothes treatment device comprising: a drum provided inside a cabinet to provide a space in which an object to be dried is accommodated; a flow path part including an exhaust duct forming a flow path for discharging the air inside the drum, a supply duct forming a flow path guiding the air to the drum, and a connection duct connecting the exhaust duct and the supply duct; a heat exchange part including a heat absorbing part for cooling the air introduced into the flow path part and a heat generating part for heating the air passing through the heat absorbing part; a first pump including a first housing including a cylindrical chamber therein, a chamber inlet for introducing water into the chamber, a chamber outlet for discharging the water inside the chamber to the outside of the first housing, and an impeller provided inside the chamber to be rotatable to move the water to the chamber outlet; a water collecting body for providing a space for storing the water and detachable from the cabinet; a first drain flow path for guiding the water removed from the air passing through the heat absorbing part to the chamber inlet; a second drain flow path for guiding the water discharged from the chamber outlet to the water collecting body; and a residual water removing part for discharging water stored in a space between the bottom surface of the chamber and the bottom surface of the impeller to the outside of the water collecting body or the cabinet. In accordance with the present invention, it is possible to prevent water from remaining inside the pump.

Description

Clothes Treatment Apparatus {Laudnry Treatment Apparatus}

This application relates to a laundry treatment apparatus.

A laundry treatment apparatus is a generic term for an apparatus for washing clothes, an apparatus for drying clothes, and an apparatus capable of both washing and drying clothes.

Among the clothes processing apparatuses capable of drying clothes, a drum providing a space for storing clothes, a duct forming a flow path for re-supplying the air discharged from the drum to the drum, and cooling the air introduced into the duct from the drum a first heat exchanger to remove moisture contained in the air, a second heat exchanger to heat the air that has passed through the first heat exchanger, and a fan to move the air that has passed through the second heat exchanger to the drum. .

In the conventional laundry treatment apparatus having the above-described structure, the air discharged from the drum is dehumidified and heated while passing through the heat exchangers, and then re-supplied to the drum. The water discharged from the air through the dehumidification process is stored in the condensed water storage space, and the water stored in the condensed water storage space moves to the water collection tank through a pump, and the user separates the water collection tank from the laundry treatment apparatus and then collects the water collection tank. The water inside could be thrown away.

The pump provided in the above-described conventional laundry treatment apparatus includes a pump housing, an impeller rotatably provided inside the pump housing, a motor rotating the impeller, a flow path for supplying condensed water to the pump housing, and condensed water inside the pump housing when the impeller rotates. In general, it was provided to include a flow path guiding to the collection tank.

The laundry treatment apparatus having the above-described structure has a problem in that condensed water remains inside the pump housing. That is, since the impeller must be rotatably provided inside the pump housing, the impeller and the bottom surface of the pump housing must be kept spaced apart. Therefore, the conventional pump has a problem in that it is difficult to prevent condensed water from remaining inside the pump housing due to its structure.

An object of the present application is to provide a laundry treatment apparatus capable of preventing water from remaining inside a pump.

The present application relates to a drum providing a space in which an object to be dried is accommodated; a flow passage forming a circulation passage of air in the drum; a heat exchanging unit provided with a heat absorbing unit for cooling the air introduced into the flow path to remove water from the air, and a heat generating unit for heating the air passing through the heat absorbing unit; A first housing having a cylindrical chamber therein, a chamber inlet for introducing water into the chamber, a chamber outlet for discharging water in the chamber to the outside of the first housing, and rotatably provided inside the chamber a first pump having an impeller for moving water to the chamber outlet; a water collecting body providing a space for storing water; a first drain passage for guiding water removed from the air passing through the heat absorbing part to the chamber inlet; a second drain passage for guiding the water discharged from the chamber outlet to the water collecting body; and a residual water removal unit configured to discharge water stored in a space between the bottom surface of the chamber and the bottom surface of the impeller to the outside of the water collecting body or the cabinet.

The present application relates to a drum provided inside a cabinet to provide a space in which an object to be dried is accommodated; an exhaust duct forming a flow path for discharging the air inside the drum, a supply duct forming a flow path for guiding air to the drum, and a flow path portion provided with a connection duct connecting the exhaust duct and the supply duct; a heat exchanging unit provided with a heat absorbing unit for cooling the air introduced into the flow path to remove water from the air, and a heat generating unit for heating the air passing through the heat absorbing unit; A first housing having a cylindrical chamber therein, a chamber inlet for introducing water into the chamber, a chamber outlet for discharging water in the chamber to the outside of the first housing, and rotatably provided inside the chamber a first pump having an impeller for moving water to the chamber outlet; a water collecting body that provides a space for storing water and is detachable from the cabinet; a first drain passage for guiding water removed from the air passing through the heat absorbing part to the chamber inlet; a second drain passage for guiding the water discharged from the chamber outlet to the water collecting body; and a residual water removal unit configured to discharge water stored in a space between the bottom surface of the chamber and the bottom surface of the impeller to the outside of the water collecting body or the cabinet.

The residual water removal unit includes a second housing having a connection passage therein; a first connection pipe connecting the bottom surface of the chamber and the inlet of the connection passage; a second connection pipe for guiding the water discharged from the outlet of the connection passage to the outside of the water collecting body or the cabinet; Containing; a rotating plate rotatably provided inside the second housing, and a transfer unit provided on the rotating plate and provided with a projection for moving the liquid flowing into the inlet of the connection passage to the outlet of the connection passage when the rotation plate rotates; can do.

The connection passage may be provided in a C-shape or U-shape.

The residual water removal unit includes a second housing having a connection passage; a first connection pipe connecting the bottom surface of the chamber and the inlet of the connection passage; a second connection pipe for guiding the water discharged from the outlet of the connection passage to the outside of the water collecting body or the cabinet; a cylinder connected to the connection passage through a communication hole provided to pass through the second housing; a piston provided to reciprocate inside the cylinder; a first check valve positioned between the inlet of the connection passage and the communication hole to prevent the liquid flowing into the inlet of the connection passage from flowing backward; and a second check valve positioned between the communication hole and the outlet of the connection passage to prevent the water discharged to the outlet of the connection passage from flowing backward.

The laundry treatment apparatus includes: a through hole provided in the water collecting body to introduce water into the water collecting body; a guide passage fixed to the cabinet to guide water through the through hole; a guide first supply pipe connecting the guide passage and the second drain passage; and a second guide supply pipe connecting the guide flow path and the second connection pipe.

The operation start time of the residual water removal unit may be set to when a preset reference time has elapsed from when the operation of the first pump is completed.

The reference time may be set to a time longer than a time required for the water remaining in the second drain passage to be recovered to the chamber.

A check valve may be provided in the guide second supply pipe or the second connection pipe to prevent the water moving to the guide passage from flowing back into the second connection pipe.

The laundry treatment apparatus further includes a check valve provided in any one of the chamber outlet port and the second drain passage to prevent water discharged through the chamber outlet from flowing back into the chamber; is provided to connect the outlet of the connection passage and the second drain passage, and a connection point between the second connection pipe and the second drain passage may be located between the check valve and the water collecting body.

The laundry treatment apparatus may include a second cabinet provided to support a bottom surface of the cabinet; a tub provided inside the second cabinet to provide a space for storing water; a second drum rotatably provided inside the tub to provide a space for storing laundry; and a drain pump provided inside the second cabinet, a tub first drain pipe for guiding water in the tub to the drain pump, and a tub second drain pipe for guiding water discharged from the drain pump to a sewer. It further includes; the second connection pipe may be provided to connect the outlet of the connection passage and the first drain pipe of the tub.

The operation start time of the residual water removal unit may be set to when a preset reference time has elapsed from when the operation of the first pump is completed.

The laundry treatment apparatus may include a second cabinet provided to support a bottom surface of the cabinet; a tub provided inside the second cabinet to provide a space for storing water; a second drum rotatably provided inside the tub to provide a space for storing laundry; and a drain pump provided inside the second cabinet, a tub first drain pipe for guiding water in the tub to the drain pump, and a tub second drain pipe for guiding water discharged from the drain pump to a sewer. It further includes; the second connection pipe may be provided to connect the outlet of the connection passage and the sewer.

The operation start time of the residual water removal unit may be set to when a preset reference time has elapsed from when the operation of the first pump is completed.

The laundry treatment apparatus may further include a drainage connector positioned outside the second cabinet and connecting the tub second drain pipe, the second connection pipe, and the sewer.

The drain connector may include a connector body fixed to the outside of the second cabinet; a sewer connection passage provided in the connector body and connected to the sewer; a tub connection passage connecting the second tub drain pipe to the sewer connection passage; and a pump connection passage connecting the second connection pipe to the sewer connection passage.

The present application has the effect of providing a laundry treatment apparatus capable of preventing water from remaining inside a pump.

1 illustrates an example of a laundry treatment apparatus.
2, 3, and 4 show examples of the residual water removal unit.
5 illustrates another embodiment of the laundry treatment apparatus.

Hereinafter, a preferred embodiment of a laundry treatment apparatus and a control method thereof will be described in detail with reference to the accompanying drawings. The configuration or control method of the apparatus to be described below is only for explaining examples of the laundry treatment apparatus and the control method thereof, and is not intended to limit the scope of the invention, and the same reference numbers used throughout the specification indicate the same configuration represent elements.

1 illustrates an example of a clothes treatment apparatus 100, wherein the laundry treatment apparatus 100 includes a cabinet 1 and a drum 2 rotatably provided inside the cabinet to provide a space for storing clothes. , a flow passage 3 forming a circulation passage for re-supplying the air discharged from the drum 2 to the drum 2, dehumidifying and heating the air introduced into the flow passage 3, and then heating the drum ( 2) includes a heat exchange unit 4 for re-supplying.

The front panel of the cabinet 1 is provided with an inlet 11 provided to communicate with the drum 2, and the inlet 11 is provided to be opened and closed by a door 12 rotatably coupled to the cabinet. can be In addition, a control panel 13 is provided on the front panel, and the control panel 13 may include an input unit for receiving a control command from a user, and a display unit for outputting information such as a control command selectable by the user. The input unit may be provided to include a power supply request unit for requesting power supply to the laundry treatment apparatus, a course input unit for allowing a user to select a desired course from among a plurality of courses, and an execution request unit for requesting the start of the course selected by the user. have.

When the drum 2 is provided with a cylindrical drum body 21 having an open front surface and a rear surface, respectively, in the cabinet 1, a first rotatably supporting front surface of the drum 2 is provided. A support portion 15 and a second support portion 18 for rotatably supporting the rear surface of the drum 2 may be provided.

The first support part 15 is provided to penetrate the first fixed body 151 fixed inside the cabinet 1 and the first fixed body to communicate the inlet 11 and the inside of the drum body 21 . It may be provided to include a drum inlet 153 , a first support body 155 provided in the first fixed body 151 and inserted into the front surface of the drum body 21 .

The first fixed body 151 may have any shape as long as the drum inlet 153 and the first support body 155 can be provided. The first support body 155 may be provided in the shape of a pipe protruding from the first fixed body 151 toward the drum body 21, and the diameter of the first support body 155 is the drum inlet. Larger than the diameter of (153), it may be set smaller than the diameter of the front surface of the drum body (21).

The first support part 15 may be provided to be connected to the inlet 11 through the connection body 156 . The connection body 156 may be provided in a cylindrical shape surrounding the inlet 11 . In this case, the drum inlet 153 may be provided as a through hole connected to the inlet 11 through the connection body 156 .

The connection body 156 may be provided with an air outlet connected to the flow passage (3). The air outlet may be provided as a through hole provided to pass through the connection body 156 , and a filter 158 for filtering the air moving to the flow passage 3 may be provided at the air outlet. The filter 158 may be detachably fixed to the connection body 156 .

The second support unit 18 is a second fixed body 181 fixed inside the cabinet 1 , a second fixed body 181 provided in the second fixed body 181 and inserted into the rear surface of the drum body 21 . It may be provided to include a support body (185). The second support portion 18 is provided with an air inlet 188 provided to pass through the second fixed body 181 to communicate the inside of the drum body 21 with the inside of the cabinet 1 . In this case, the flow path part 3 may be provided to connect the air outlet and the air inlet 188 .

The drum body 21 may be provided in a cylindrical shape with an empty inside, and a lifter 22 for stirring the clothes may be provided on the circumferential surface. The lifter 22 may be provided as a board protruding from the circumferential surface of the drum body 21 toward the center of rotation of the drum body.

The drum body 21 is rotated by a drum driving unit, and the drum driving unit includes a motor 23 fixed inside the cabinet 1, a pulley rotating by the motor, a circumferential surface of the pulley and the drum body ( 21) may be provided to include a belt 24 connecting the circumferential surface.

The flow path part 3 is provided to include an exhaust duct 31 connected to the air outlet, a supply duct 33 connected to the air inlet 188, and a connection duct 35 connecting the exhaust duct and the supply duct. can be

The heat exchange unit 4 may be provided with various devices capable of sequentially dehumidifying and heating the air introduced into the flow path unit 3 . In FIG. 1 , the heat exchange unit 4 is provided with a heat pump. The case is shown as an example.

The heat exchange unit 4 includes a fan 49 for moving air along the flow path part 3, a first heat exchanger (heat absorbing part 41) for removing moisture from the air introduced into the flow path part 3, and a second heat exchanger (heating unit, 43 ) provided inside the flow path part 3 to heat the air that has passed through the first heat exchanger 41 .

The heat absorbing part 41 is provided with a plurality of metal plates arranged along the width direction of the connection duct 35 or a plurality of metal plates arranged along the height direction of the connection duct, and the heating part 43 is connected to the connection duct 35 . It may be provided with a plurality of metal plates arranged along the width direction of the duct or the height direction of the connection duct. The heat absorbing part 41 and the heat generating part 43 are sequentially arranged along the moving direction of the air, and are connected to each other through a refrigerant pipe 48 forming a circulation path of the refrigerant.

The refrigerant moves along the refrigerant pipe 48 by the compressor 45 located outside the flow path part 3 , and the refrigerant pipe 48 has the heat absorbing part 41 from the heat generating part 43 . ) is provided with a pressure regulator 47 for adjusting the pressure of the refrigerant moving to.

The heat absorbing part 41 is a means for cooling the air and evaporating the refrigerant by transferring the heat of the air introduced into the exhaust duct 31 to the refrigerant. The heat generating unit 43 is a means for heating the air and condensing the refrigerant by transferring the heat of the refrigerant that has passed through the compressor 45 to the air. In this case, moisture contained in the air will be collected on the bottom surface of the connection duct 35 along the surface of the heat absorbing part 41 when passing through the heat absorbing part 41 .

In order to collect the water removed from the air passing through the heat absorbing part 41 , the laundry treatment apparatus 100 is provided with a condensed water storage body 37 . The condensed water storage body 37 may be provided anywhere inside the laundry treatment apparatus as long as it can store the water discharged from the heat absorbing unit. The case is shown as an example.

A heat exchanger support part 371 may be further provided inside the condensed water storage body 37 so that the heat absorbing part and the heat generating part 41 and 43 do not come into contact with the water (condensate) stored in the condensed water storage body 37. have. The heat exchanger support 371 may be provided to include a support plate in which the heat absorbing part and the heat generating parts 41 and 43 are in contact, and a spacer for maintaining a gap between the support plate and the bottom surface of the condensed water storage body 37 . have.

The water stored in the condensed water storage body 37 may be provided to move to the water collecting unit 5 through the draining unit 6 .

The water collecting unit 5 is detachably provided in the cabinet 1 and is a means for storing water. 53) is shown as an example.

In this case, a drain mounting hole 14 into which the water collecting body 53 is inserted may be provided on the front panel of the cabinet 1 . A panel 51 may be fixed to the front surface of the water collecting body 53 , and the panel 51 may be provided in a shape capable of closing the drain mounting hole 14 .

A first through hole 531 and a second through hole 533 may be provided on the upper surface of the water collecting body 53 . The first through hole 531 is a means for introducing water into the water collecting body, and the second through hole 533 makes the pressure inside the water collecting body 53 equal to the pressure inside the cabinet 1 . is a means to

The drain unit 6 includes a first pump 61 , a first drain passage 64 for guiding the water stored in the condensed water storage body 37 to the first pump 61 , and the first pump 61 . ) may be provided to include a second drain passage 65 for guiding the water discharged from the water collection body to the first through hole 531 of the water collecting body.

As shown in FIG. 2 , the first pump 61 includes a first housing 611 having a chamber C capable of storing water therein, and a chamber inlet 612 for introducing water into the chamber C. , a chamber outlet 613 for discharging the water inside the chamber C to the outside of the first housing 611, and a rotatably provided inside the chamber C to supply water to the chamber outlet 613 It may be provided to include an impeller 617 for moving, and an impeller motor 618 for rotating the impeller.

The first drain passage 64 is provided to connect the condensed water body 37 and the chamber inlet 612 , and the second drain passage 65 is connected to the chamber outlet 613 and the first water collecting body. It may be provided to connect the guide 62 for supplying water to the through hole 531 .

As shown in FIG. 1 , the guide 62 includes a guide body 621 fixed to the cabinet 1 , and a guide passage provided inside the guide body to guide water to the first through hole 531 . 623 , it may be provided to include a guide first supply pipe 625 connecting the guide passage 623 and the second drain passage 65 . The guide body 621 may be fixed to the upper panel of the cabinet, and the exit of the guide flow path 623 may be provided to be positioned above the first through hole 531 .

The drain unit 6 having the above-described structure has a structure that cannot completely drain the water inside the first pump 61 . That is, since the bottom surface of the impeller 617 is rotatable inside the chamber C only by maintaining a state spaced apart from the bottom surface of the chamber C, the bottom surface of the impeller 617 and the chamber C ), the water stored in the space between the bottom surfaces could not be discharged to the outside of the first housing 611 even when the impeller 617 rotates. If water remains inside the first housing 611 , foreign substances may accumulate inside the chamber C to prevent rotation of the impeller 617 .

In order to prevent water from remaining inside the first housing 611 , the laundry treatment apparatus 100 collects water stored between the bottom surface of the chamber C and the bottom surface of the impeller 617 . A residual water removal unit 7 for discharging to the outside of the body 53 or the cabinet 1 may be further provided.

The residual water removal unit 7 is a pump (second pump, 71) that moves a predetermined amount of water per unit time, and the water discharged from the second pump 71 is discharged from the water collecting body 53 or the outside of the cabinet. It may be provided to include a residual water drain pipe 73 to guide. A peristaltic pump or a metering pump may be an example of the second pump 71 .

FIG. 2 shows an example of the second pump 71. The second pump 71 of FIG. 2 is provided to include a second housing 711 having a connection passage 714 fixed therein. The connection passage 714 may be provided as a tube provided in a C-shape or U-shape. The inlet of the connection passage 714 is fixed to the housing inlet 712 provided in the second housing, and the outlet of the connection passage 714 is fixed to the housing outlet 713 provided in the second housing. have.

The residual water discharge pipe 72 is a first connection pipe 721 connecting the residual water discharge port 615 provided on the bottom surface of the chamber C and the inlet of the connection flow path 714, and the connection flow path 714. It may be provided to include a second connection pipe 723 for guiding the water discharged from the outlet to the guide 62 . In this case, the guide 62 may be provided with a guide second supply pipe 627 connecting the second connection pipe 723 to the guide flow path 623 .

The liquid inside the connection passage 714 moves to the guide passage 623 through a transfer unit 74 , and the transfer unit 74 includes a rotating plate 741 provided inside the second housing 711 , the rotating plate 741 may be provided to include a motor for rotating the fixed shaft 742 , and pressing parts 743 and 744 provided on the rotating plate 741 .

The pressing part may be provided with a plurality of projections spaced apart from each other at equal intervals about the axis. It is preferable that one end of each protrusion is fixed to the rotating plate 741 , and the free end is provided in a shape for bringing the connection passage 714 into close contact with the second housing 711 . FIG. 2 illustrates an example in which the pressing part is provided with first and second protrusions 743 and 744 spaced 180 degrees apart.

When the rotating plate 741 is rotated by the motor, the protrusions 743 and 744 move the liquid introduced into the inlet of the connection passage 714 to the outlet of the connection passage 714, and the connection passage The liquid discharged from 714 is directed to the collection body 53 through the second connection pipe 723 , the guide second supply pipe 627 , the guide flow path 623 , and the first through hole 531 . will move

In order to prevent the water moving to the guide flow path 623 from flowing back into the second connection pipe 723 , the guide flow path valve (check) is provided on the guide second supply pipe 627 or the second connection pipe 723 . A valve 629 may be further provided.

3 shows another embodiment of the second pump. The second pump 73 of FIG. 3 includes a second housing 731 having a connection passage 734 therein. The second housing 731 is provided with a housing inlet 732 forming an inlet of the connection passage 734 and a housing outlet 733 forming an outlet of the connection passage 734 .

An inlet of the connection flow path 734 is connected to the bottom surface of the chamber C through the first connection pipe 721 , and an outlet of the connection flow path 734 is connected through the second connection pipe 723 . It may be connected to the guide second supply pipe 627 .

Meanwhile, the liquid inside the connection passage 734 moves to the second connection pipe 723 through the transfer unit 75 , and the transfer unit 75 has a communication hole 752 passing through the second housing 731 . ) through a cylinder 751 connected to the connection passage 734, a piston 753 reciprocating inside the cylinder 751, and provided inside the connection passage 734 to the housing inlet 732 and the communication hole A first check valve 735 positioned between 752, and a second check valve 736 provided inside the connection passage 734 and positioned between the communication hole 752 and the housing outlet 733. It may be provided to include.

The first check valve 735 is provided to prevent the water flowing into the housing inlet 732 from flowing backward, and the second check valve 736 is configured to allow the water discharged to the housing outlet 733 to flow back. It is a means to prevent

The piston 753 reciprocates inside the cylinder 751 by a piston driving unit, and the piston driving unit is a main gear 756 rotating by a motor 757, a driven gear 754 rotating by the main driving gear. , one end may be connected to the piston 753 and the other end may be provided as a link 755 connected to the driven gear 754 . The other end of the link 755 should be connected to the driven gear so as to be positioned between the center of rotation of the driven gear 754 and the edge of the driven gear.

The second pumps 71 and 73 having the above-described structure may move the water remaining in the chamber C to the water collecting body 53 . Accordingly, the laundry treatment apparatus 100 may prevent water from remaining inside the first housing 611 .

On the other hand, the operation start time of the second pumps 71 and 73 (the time when the impeller starts to rotate) may be set to a time when a preset reference time has elapsed from when the operation of the first pump 61 is completed. . The reference time may be set to a time longer than the time it takes for the water remaining in the second drain passage 65 to be recovered to the chamber C.

When the second pumps 71 and 73 operate when the reference time elapses from when the first pump 61 completes the operation, the laundry treatment apparatus 100 receives a separate control command from the user. Even if there is no input, the water in the chamber (C) can be moved to the water collecting body (53) without the need to determine how much water remains in the chamber (C).

4 is characterized in that the second connection pipe 723 provided in the residual water removal unit 7 is provided to discharge water to the second drain passage 65 .

That is, the residual water removal unit 7 according to the present embodiment is provided in the second drain passage 65 to prevent the water discharged from the chamber outlet 613 from flowing back into the chamber C. It may be provided to further include a drain passage valve (651, check valve). Unlike the drawings, the second drain channel valve 651 may be provided at the chamber outlet 613 . In this case, the connection point of the second connection pipe 723 and the second drain passage 65 may be set to be located between the second drain passage valve 651 and the guide second supply tube 627 .

The residual water removal unit 7 according to the present embodiment moves the water remaining in the chamber C to the second drain passage 65 . The water discharged to the second drain passage 65 through the second connection pipe 723 maintains a state stored in the second drain passage by the second drain passage valve 651, and the first When the pump is operated, it moves to the water collecting body 53 through the guide first supply pipe 625 , the guide flow path 623 , and the first through hole 531 together with the water discharged from the chamber (C). will be.

5 illustrates another embodiment of the laundry treatment apparatus. The laundry treatment apparatus 100 according to the present exemplary embodiment further includes a separate treatment apparatus (washing machine or dryer) supporting the bottom surface of the cabinet 1 . It is characterized by being

The treatment device includes a second cabinet 8 provided to support the bottom surface of the cabinet 1, a tub 83 provided inside the second cabinet 8 to provide a space for storing water, and the tub (83) It may be provided to include a second drum 84 that is rotatably provided therein to provide a space for storing laundry.

A second inlet 81 communicating with the second drum 84 is provided on the front panel of the second cabinet 8 , and the second inlet 81 is provided to be opened and closed by a second door 82 . can be

The tub 83 may have a hollow cylindrical shape, and may be fixed inside the second cabinet 8 through the tub support 833 . A tub inlet 831 connected to the second inlet 81 through a gasket 832 may be provided on the front surface of the tub 83 .

The second drum 84 may be provided as a second drum body which is provided in an empty cylindrical shape and is positioned inside the tub 83 . A second drum inlet 841 is provided on a front surface of the second drum body, and a drum through hole 843 is provided on a circumferential surface of the second drum body. The inner space of the second drum is connected to the tub 83 through the drum through-hole 843 . The second drum body is rotatable by a second drum driving unit 845 positioned outside the tub 83 .

The tub 83 is supplied with water through the tub water supply unit, and the tub water supply unit is provided to include a tub water supply pipe 851 connecting the tub and a water supply source, and a water supply valve 853 for controlling the opening and closing of the tub water supply pipe. can

The water stored in the tub 83 is discharged to a sewer located outside the laundry treatment apparatus 100 through the tub drain. The tub drain unit includes a drain pump 861 provided inside the second cabinet 8, a tub first drain pipe 863 for guiding water in the tub 83 to the drain pump 861, and the drain pump It may be provided to include a tub second drain pipe 865 for guiding the water discharged from the 861 to the sewer. In this case, the second connection pipe 723 provided in the residual water drainage unit 7 may be provided to connect the outlets of the connection passages 714 and 734 to the sewer.

The laundry treatment apparatus according to the present embodiment may include a drain connector 87 having a Y-shaped flow path connecting the tub second drain pipe 865, the second connection pipe 723, and the sewer. have.

The drain connector 87 includes a connector body fixed to the outside of the second cabinet 8, a sewer connection flow path 871 provided in the connector body and connected to the sewer, and the tub second drain pipe 865. It may be provided to include a tub connection passage 873 connected to the sewer connection passage 871 , and a pump connection passage 875 connecting the second connection pipe 723 to the sewer connection passage 871 . The second pumps 71 and 73 provided in this embodiment may also be controlled to start operation when the reference time elapses from when the operation of the first pump 61 is completed.

Unlike the drawings, it may be provided to connect the outlets of the connection passages 714 and 734 and the first drain pipe 863 of the tub.

The above-described laundry treatment apparatus and method for controlling the laundry treatment apparatus may be modified and implemented in various forms, but the scope of the invention is not limited to the above-described embodiments.

100: clothes processing device 1: cabinet 11: inlet
12: door 13: control panel 14: drain mounting hole
15: first support 153: drum inlet 18: second support
188: air inlet 2: drum 21: drum body
22: lifter 23: motor 3: flow passage part
31: exhaust duct 33: supply duct 35: connection duct
37: condensate storage body 371: heat exchanger support part 4: heat exchange unit
41: heat absorbing part 43: heat generating part (yes) 45: compressor
47: pressure regulator 48: refrigerant pipe 49: fan
5: water collecting part 51: panel 53: collecting body
531: first through hole 533: second through hole 6: drain unit
61: first pump 611: first housing C: chamber
612: chamber inlet 613: chamber outlet 615: residual water outlet
617: impeller 62: guide 621: guide body
623: guide flow path 625: guide first supply pipe 627: guide second supply pipe
629: guide flow passage valve 64: first drain passage 65: second drain passage
651: second drain passage valve 7: residual water removal unit 71, 73: second pump
711, 731: second housing 712, 732: housing inlet 713, 733: housing outlet
714, 734: connection passage 735: first check valve 736: second check valve
72: residual water drain pipe 721: first connector 723: second connector
74: transfer unit 741: rotating plate 743: first projection
744: second protrusion 75: transfer unit 751: cylinder
752: communication hole 753: piston 8: second cabinet
83: tub 84: second drum 863: tub first drain pipe
865: tub second drain pipe 87: drain connector 871: sewer connection passage
873: tub connection passage 875: pump connection passage

Claims (13)

a drum provided inside the cabinet to provide a space in which an object to be dried is accommodated;
an exhaust duct forming a flow path for discharging the air inside the drum, a supply duct forming a flow path for guiding air to the drum, and a flow path portion provided with a connection duct connecting the exhaust duct and the supply duct;
a heat exchange unit provided with a heat absorbing unit for cooling the air introduced into the flow path to remove water from the air, and a heat generating unit for heating the air passing through the heat absorbing unit;
A first housing having a cylindrical chamber therein, a chamber inlet for introducing water into the chamber, a chamber outlet for discharging water in the chamber to the outside of the first housing, and rotatably provided inside the chamber a first pump having an impeller for moving water to the chamber outlet;
a water collecting body that provides a space for storing water and is detachable from the cabinet;
a first drain passage for guiding water removed from the air passing through the heat absorbing part to the chamber inlet;
a second drain passage for guiding the water discharged from the chamber outlet to the water collecting body; and
and a residual water removal unit configured to discharge water stored in a space between the bottom surface of the chamber and the bottom surface of the impeller to the outside of the water collecting body or the cabinet. According to claim 1,
The residual water removal unit
a second housing having a connection passage therein;
a first connection pipe connecting the bottom surface of the chamber and the inlet of the connection passage;
a second connection pipe for guiding the water discharged from the outlet of the connection passage to the outside of the water collecting body or the cabinet;
Containing; a rotating plate rotatably provided inside the second housing, and a transfer unit provided on the rotating plate and provided with a projection for moving the liquid flowing into the inlet of the connection passage to the outlet of the connection passage when the rotation plate rotates; A clothes processing apparatus, characterized in that According to claim 1,
The residual water removal unit
a second housing having a connection passage;
a first connection pipe connecting the bottom surface of the chamber and the inlet of the connection passage;
a second connection pipe for guiding the water discharged from the outlet of the connection passage to the outside of the water collecting body or the cabinet;
a cylinder connected to the connection passage through a communication hole provided to pass through the second housing;
a piston provided to reciprocate inside the cylinder;
a first check valve positioned between the inlet of the connection passage and the communication hole to prevent the liquid flowing into the inlet of the connection passage from flowing backward; and
and a second check valve positioned between the communication hole and the outlet of the connection passage to prevent the water discharged to the outlet of the connection passage from flowing backward. According to any one of claims 2 and 3,
a through hole provided in the water collecting body to introduce water into the water collecting body;
a guide passage fixed to the cabinet to guide water through the through hole;
a guide first supply pipe connecting the guide passage and the second drain passage; and
and a guide second supply pipe connecting the guide flow path and the second connection pipe. 5. The method of claim 4,
The starting time of the operation of the residual water removal unit is set to a time when a preset reference time has elapsed from when the operation of the first pump is completed. 6. The method of claim 5,
and the reference time is set to be equal to or longer than a time required for the water remaining in the second drain passage to be recovered to the chamber. 5. The method of claim 4,
and a check valve at the second guide supply pipe or the second connection pipe to prevent the water moving through the guide passage from flowing back into the second connection pipe. 5. The method of claim 4,
A check valve provided in any one of the chamber outlet or the second drain passage to prevent the water discharged to the chamber outlet from flowing back into the chamber; further comprising,
The second connection pipe is provided to connect the outlet of the connection flow path and the second drain flow path, and the connection point of the second connection pipe and the second drain flow path is located between the check valve and the water collecting body. clothes processing equipment. According to any one of claims 2 and 3,
a second cabinet provided to support a bottom surface of the cabinet;
a tub provided inside the second cabinet to provide a space for storing water;
a second drum rotatably provided inside the tub to provide a space for storing laundry; and
A tub drain provided with a drain pump provided inside the second cabinet, a tub first drain pipe for guiding the water inside the tub to the drain pump, and a second tub drain pipe for guiding the water discharged from the drain pump to the sewer. further including;
The second connection pipe is provided to connect the outlet of the connection flow path and the first drain pipe of the tub. 10. The method of claim 9,
The starting time of the operation of the residual water removal unit is set to a time when a preset reference time has elapsed from when the operation of the first pump is completed. According to any one of claims 2 and 3,
a second cabinet provided to support a bottom surface of the cabinet;
a tub provided inside the second cabinet to provide a space for storing water;
a second drum rotatably provided inside the tub to provide a space for storing laundry; and
A tub drain provided with a drain pump provided inside the second cabinet, a tub first drain pipe for guiding the water inside the tub to the drain pump, and a second tub drain pipe for guiding the water discharged from the drain pump to the sewer. further including;
and the second connection pipe is provided to connect the outlet of the connection passage and the sewer. 12. The method of claim 11,
The starting time of the operation of the residual water removal unit is set to a time when a preset reference time has elapsed from when the operation of the first pump is completed. 12. The method of claim 11,
and a drain connector positioned outside the second cabinet, the drain connector connecting the second drain pipe, the second connection pipe, and the sewer to the tub.

Images