# US 2021/0277559 A1 · Stack-type laundry treating apparatus

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- Number: US 2021/0277559 A1
- Document ID: US20210277559A1
- Status: Published application
- Kind: A1
- Application number: 17/193,688
- Filed: 2021-03-05
- Published: 2021-09-09
- Earliest claimed: 2020-03-05
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Daehan KWON; Donghyun JIN; Sangho CHO
- Web page: https://patentgrep.com/patent/US20210277559A1

## CPC

- D06F 29/005: {the other separate apparatus being a drying appliance}
- D06F 23/02: and rotating or oscillating about a horizontal axis
- D06F 37/30: Driving arrangements (control circuits or arrangements D06F34/08)
- D06F 39/12: Casings; Tubs
- D06F 39/125: {Supporting arrangements for the casing, e.g. rollers or legs}
- D06F 58/08: Driving arrangements
- D06F 58/26: Heating arrangements, e.g. gas heating equipment (D06F58/18 takes precedence)
- D06F 31/00: Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
- Y02B 40/00: Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
- D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

A stack-type laundry treating apparatus includes upper and lower treating apparatuses. The upper treating apparatus includes an upper cabinet including an upper base, a drying drum, an upper driver disposed on the upper base for rotating the drying drum, an air flow path for supplying and discharging air to and from the drying drum, and a heat-exchanger for dehumidifying and heating the air. The lower treating apparatus includes a lower cabinet including a lower top panel on which the upper base is mounted, a tub disposed in the lower cabinet, a washing drum disposed inside the tub, and a lower driver for rotating the washing drum. A support protrusion extends horizontally and outwardly from a bottom portion of the upper base to support the upper cabinet with respect to the lower cabinet.

## Claims

### Claim 1

A stack-type laundry treating system comprising:
an upper treating apparatus including:
an upper cabinet including an upper base,
a drying drum disposed in the upper cabinet and configured to rotate, the drying drum being configured to receive an object to be dried,
an upper driver disposed at the upper base and configured to rotate the drying drum,
an air flow passage configured to supply air to and discharge air from the drying drum, and
a heat-exchanger configured to dehumidify and heat air that is supplied to and discharged from the drying drum; and
a lower treating apparatus including:
a lower cabinet including a lower top panel at which the upper base is mounted,
a tub disposed in the lower cabinet and configured to receive washing-water,
a washing drum disposed inside the tub and configured to receive an object to be washed, and
a lower driver configured to rotate the washing drum,
wherein the upper base includes a support protrusion that is located at a bottom portion of the upper base and supports the upper cabinet with respect to the lower cabinet.

### Claim 2 (depends on 1)

The system of claim 1, wherein the upper cabinet has an upper side panel,
wherein the lower cabinet has a lower side panel, and
wherein the support protrusion is interposed between the upper side panel and the lower side panel and supports the upper treating apparatus.

### Claim 3 (depends on 2)

The system of claim 2, wherein the upper side panel includes an upper horizontal bent portion horizontally extending from a bottom of the upper side panel toward an inside of the upper treating apparatus, and
wherein the support protrusion is disposed at an inside of the upper horizontal bent portion.

### Claim 4 (depends on 3)

The system of claim 3, wherein the upper side panel includes:
a vertical bent portion extending upward from an end of the upper horizontal bent portion, and
a base support portion extending from an end of the vertical bent portion to an upper portion of the support protrusion,
wherein the support protrusion is positioned at the base support portion.

### Claim 5 (depends on 4)

The system of claim 4, wherein the lower top panel has a support face that is interposed between the lower side panel and the support protrusion and supports the support protrusion.

### Claim 6 (depends on 5)

The system of claim 5, wherein the lower side panel has a lower horizontal bent portion horizontally extending from a top of the lower side panel toward an inside of the lower treating apparatus, and
wherein the support face of the lower top panel is disposed at the lower horizontal bent portion of the lower side panel.

### Claim 7 (depends on 6)

The system of claim 6, wherein the upper horizontal bent portion of the upper side panel and the lower horizontal bent portion of the lower side panel are spaced from each other by a first distance.

### Claim 8 (depends on 7)

The system of claim 7, wherein a reinforcing frame is disposed at the top of the lower side panel, and
wherein the reinforcement frame includes (i) a horizontal frame disposed at a top face of the lower horizontal bent portion and (ii) a vertical frame extending downward from an inner end of the horizontal frame.

### Claim 9 (depends on 8)

The system of claim 8, wherein the horizontal frame of the reinforcement frame is located between the lower horizontal bent portion of the lower side panel and the support face of the lower top panel, and
wherein the horizontal frame of the reinforcement frame and the upper horizontal bent portion of the upper side panel are spaced apart from each other by a second distance that is smaller than the first distance.

### Claim 10 (depends on 5)

The system of claim 5, wherein an outer end of the support face of the lower top panel is spaced apart from the vertical bent portion of the upper side panel.

### Claim 11 (depends on 2)

The system of claim 2, wherein the support protrusion includes a guide protrusion protruding toward the lower top panel,
wherein the lower top panel defines a guide groove at a position corresponding to a position of the guide protrusion, wherein the guide protrusion is inserted into the guide groove.

### Claim 12 (depends on 11)

The system of claim 11, wherein the guide groove of the lower top panel is positioned adjacent to the lower side panel and is recessed toward an inside of the lower treating apparatus.

### Claim 13 (depends on 11)

The system of claim 11, wherein the guide protrusion of the support protrusion includes:
a pair of front guide protrusions disposed at opposite sides of a front portion of a bottom face of the upper base; and
a pair of rear guide protrusions disposed at opposite sides of a rear portion of the bottom face of the upper base.

### Claim 14 (depends on 13)

The system of claim 13, wherein the guide groove of the lower top panel includes:
a pair of front guide grooves recessed at the lower top panel and corresponding to positions of the pair of front guide protrusions; and
a pair of rear guide grooves recessed at the lower top panel and corresponding to positions of the pair of rear guide protrusions.

### Claim 15 (depends on 13)

The system of claim 13, wherein the guide protrusion has:
a front guide face;
a front inclined face inclined upward from a front end of the front guide face toward a bottom face of the upper base; and
a rear inclined face inclined upward from a rear end of the front guide face toward the bottom face of the upper base.

### Claim 16 (depends on 15)

The system of claim 15, wherein the guide groove has:
a guide groove face;
a front inclined face inclined upward from a front end of the guide groove face toward a top face of the lower top panel; and
a rear inclined face inclined upward from a rear end of the guide groove face toward the top face of the lower top panel.

### Claim 17 (depends on 16)

The system of claim 16, wherein the front inclined face of the guide groove has an auxiliary guide face positioned to be higher than the front guide face of the guide protrusion.

### Claim 18 (depends on 16)

The system of claim 16, wherein an outer edge of the front guide face of the guide protrusion has a curved face.

### Claim 19 (depends on 11)

The system of claim 11, wherein the support protrusion is made of a same material as the upper base and integrally molded with the upper base using injection molding.

### Claim 20 (depends on 11)

The system of claim 11, wherein the guide groove is made of a same metal plate as the lower top panel and integrally molded with the lower top panel using press molding.

### Claim 21 (depends on 11)

The system of claim 11, wherein the support protrusion of the upper base extends outwardly from an outer face of the upper base, wherein the guide protrusion of the support protrusion extends downward from an end of the support protrusion.