Laundry treatment apparatus

Patent metadata

Field	Value
Publication number	US-9290885-B2
Application number	US-201414163841-A
Country	US
Kind code	B2
Filing date	Jan 24, 2014
Priority date	Jan 25, 2013
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

A laundry treatment apparatus may include a cabinet defining an external appearance of the apparatus, the cabinet having a laundry opening, a laundry accommodation module provided within the cabinet to receive laundry introduced through the laundry opening, a suction duct into which interior air from the laundry accommodation module may be introduced, a discharge duct from which the air is discharged into the laundry accommodation module, a connection duct connecting the suction duct and the discharge duct to each other, a heat exchanger provided in the connection duct, and a blower provided between the heat exchanger and the discharge duct to circulate the interior air of the laundry accommodation module.

First claim

What is claimed is:

1. A laundry treatment apparatus, comprising:
a cabinet having a laundry opening formed therein;
a laundry receiving device provided in the cabinet and configured to receive laundry therein through the laundry opening formed in the cabinet;
a hot air supply device, including:
a circulation passage configured to guide air discharged from the laundry receiving device and to resupply the air back into the laundry receiving device;
a heat exchanger provided in the circulation passage; and
a blower configured to circulate air from an interior of the laundry receiving device through the circulation passage and back into the laundry receiving device;

a filter device positioned in the circulation passage to filter air flowing to the heat exchanger, wherein the filter device is removable from the circulation passage through a corresponding portion of the cabinet;
a filter separation/coupling passage that penetrates the cabinet; and
a filter guide that connects the filter separation/coupling passage and the circulation passage, wherein the filter guide is configured to guide the filter device into and out of the circulation passage, and wherein the filter separation/coupling passage is closed when the filter device is inserted into the circulation passage, and the filter separation/coupling passage is opened when the filter device is removed from the circulation passage.

2. The apparatus according to claim 1 , wherein the filter separation/coupling passage is positioned above the laundry opening formed in the cabinet.

3. The apparatus according to claim 2 , wherein the filter device includes:
a filter body provided in the filter guide;
a filter frame that extends from the filter body into the circulation passage; and
a filter supported in the filter frame to catch impurities in air flowing through the circulation passage.

4. The apparatus according to claim 3 , wherein the filter frame includes:
a first frame fixed to the filter body, wherein the first frame supports a first filter configured to filter air; and
a second frame rotatably and separably coupled to the first frame, wherein the second frame supports a second filter configured to filter air.

5. The apparatus according to claim 3 , wherein at least one of the body or the filter frame is an elastic member.

6. The apparatus according to claim 3 , wherein the filter device further includes:
a handle received in the filter separation/coupling passage; and
an elastic support portion that connects the handle and the filter body to elastically support the filter body.

7. The apparatus according to claim 3 , further including an impurity removal device configured to remove impurities accumulated on the filter.

8. The apparatus according to claim 7 , wherein the impurity removal device includes a scraper coupled to the filter guide to separate impurities from the filter as the filter frame is withdrawn from or inserted into the circulation passage.

9. The apparatus according to claim 1 , wherein the circulation passage guides air out of the laundry receiving device from a rear region of the laundry receiving device and back into the laundry receiving device at a front region of the laundry receiving device, the front region being oriented to face the laundry opening.

10. The apparatus according to claim 9 , wherein the circulation passage includes:
a suction duct fixed to a rear surface of the laundry receiving device, wherein the suction duct guides air from an interior of the laundry receiving device into the circulation passage;
a discharge duct fixed to a front surface of the laundry receiving device, wherein the discharge duct discharges air from the circulation passage back into the laundry receiving device; and
a connection duct that connects the suction duct and the discharge duct, wherein the heat exchanger is positioned in the connection duct, and the blower is positioned between the heat exchanger and the discharge duct.

11. The apparatus according to claim 10 , wherein the laundry receiving device includes:
a cylindrical tub provided in the cabinet, the tub having a tub opening that faces the laundry opening formed in the cabinet;
a drum rotatably provided in the tub and configured to receive laundry therein through the tub opening; and
a gasket that extends between the tub opening and the laundry opening so as to prevent leakage of wash water from the tub.

12. The apparatus according to claim 11 , wherein the suction duct is fixed to an upper circumferential surface of the tub, and the discharge duct is fixed to the gasket.

13. The apparatus according to claim 12 , wherein the suction duct and the gasket are vibration insulating members.

14. The apparatus according to claim 1 , wherein the circulation passage is fixed to an upper outer circumferential surface of the laundry receiving device and provides vibration insulation for the heat exchanger and the laundry receiving device.

15. The apparatus according to claim 4 , wherein the first frame is rotatably coupled to the second frame via a hinge.

16. The apparatus according to claim 4 , wherein the first frame and the second frame are arranged to face each other.

17. The apparatus according to claim 4 , wherein the filter device further includes frame coupling portions that secures the first frame to the second frame.

18. The apparatus according to claim 17 , wherein the frame coupling portions include:
a boss provided on the filter body; and
a receiving recess provided in the second frame.

19. The apparatus according to claim 6 , wherein the elastic support portion includes a plurality of corrugations that forms at least one surface of the filter body.

20. The apparatus according to claim 8 , wherein the scraper includes:
a first scraper connected the filter guide to come into contact with the first filter; and
a second scraper connected to the filter guide to come into contact with the second filter.

Assignees

• Lg Electronics Inc

Inventors

• Kim Hyojun
• Han Injae
• Hong Sangwook
• Kim Youngsuk

Classifications

• D06F2105/26

  Heat pumps · CPC title

• D06F2103/50

  related to heat pumps, e.g. pressure or flow rate · CPC title

• D06F2105/24

  Flow or velocity · CPC title

• D06F2105/46

  Drum speed; Actuation of motors, e.g. starting or interrupting · CPC title

• D06F2103/34

  Humidity · CPC title