Drying air duct, clothing treatment device, and method for cleaning drying air duct

Patent metadata

Field	Value
Publication number	US-12173447-B2
Application number	US-202017621090-A
Country	US
Kind code	B2
Filing date	Jun 8, 2020
Priority date	Sep 9, 2019
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A drying air duct, a clothing treatment device and a method for cleaning a drying air duct are provided. The drying air duct includes a condensing section air duct, a heating section air duct and a fan; the fan is provided at a connection position of the condensing section air duct and the heating section air duct, a cleaning device is provided in the condensing section air duct, the cleaning device is provided at an end of the condensing section air duct adjacent to the fan and is capable of cleaning a side of the condensing section air duct away from the fan. The drying air duct can effectively clean the pipe sudden expansion area of the condensing section air duct, preventing the accumulation of soft flocks in the condensing section air duct.

First claim

What is claimed is:

1. A drying air duct, comprising a condensing section air duct, a heating section air duct and a fan, wherein the fan is provided at a connection position of the condensing section air duct and the heating section air duct, a cleaning device is provided in the condensing section air duct, and the cleaning device is provided at an end of the condensing section air duct adjacent to the fan and is capable of cleaning the condensing section air duct located on a side of the cleaning device away from the fan, and
wherein the cleaning device comprises a spray pipe which is provided in the condensing section air duct, the spray pipe comprises a pipe body and a spray hole, the spray hole is located only on a side of the pipe body away from the fan, and the spray pipe is configured to spray clean water into the condensing section air duct through the spray hole in a direction away from the fan.

2. The drying air duct according to claim 1 , wherein the pipe body is provided with a water inlet, and there are a plurality of spray holes, the plurality of spray holes communicate with the water inlet through an inner cavity of the pipe body, and the plurality of spray holes are spaced in length and width directions of the pipe body.

3. The drying air duct according to claim 1 , wherein the pipe body is a round pipe, and the spray hole is a radial hole, the plurality of spray holes are evenly arranged in circumferential and axial directions of the pipe body, the spray holes are located in an area range of 90° to 150° on the pipe body in a circumferential direction.

4. The drying air duct according to claim 1 , wherein a bottom of the pipe body comprises two inclined plates forming a V shape, the two inclined plates are respectively provided with the spray holes, and the spray holes are perpendicular to a surface of the inclined plate where the spray holes are located, an angle between the two inclined plates is in a range of 60° to 150°.

5. The drying air duct according to claim 1 , wherein an end portion of the pipe body is provided with a connecting plate, and the connecting plate is provided with a connecting hole, the pipe body is fixedly connected to an air duct wall of the condensing section air duct through the connecting plate.

6. The drying air duct according to claim 1 , wherein a fixing frame is provided on an outer peripheral wall of the pipe body, the fixing frame is provided with a plurality of ventilation openings, and the pipe body is fixedly provided in the condensing section air duct through the fixing frame.

7. The drying air duct according to claim 6 , wherein the plurality of ventilation openings is distributed at both sides of the pipe body, and an airflow is guided by the pipe body to enter the fan from the plurality of ventilation openings on the both sides of the pipe body.

8. The drying air duct according to claim 1 , wherein the drying air duct further comprises an air-out section air duct, the air-out section air duct is provided at an air outlet of the heating section air duct, and the air-out section air duct is provided with a temperature sensor and an air velocity sensor.

9. The drying air duct according to claim 8 , wherein the temperature sensor and the air velocity sensor are located at a same height, and a cross section of the air-out section air duct is rectangular; in a horizontal cross section, a length of a long side of the air-out section air duct is L, and a length of a short side is h, a depth at which the temperature sensor and the air velocity sensor are inserted into the air-out air duct is H 0 , a distance between the temperature sensor and a first short side is L 1 , a distance between the air velocity sensor and the first short side is L 2 , wherein L 1 ranges from 0.2L to 0.4L, L 2 ranges from 0.6L to 0.8L, H 0 ranges from 0.45h to 0.55h.

10. A clothing treatment device, comprising the drying air duct according to claim 1 .

Assignees

• Gree Electric Appliances Inc Zhuhai

Inventors

• Liu Jian
• Long Binhua
• Zhu Weifeng
• Feng Ying
• Chen Tan

Classifications

• D06F58/26

  Heating arrangements, e.g. gas heating equipment (D06F58/18 takes precedence) · CPC title

• D06F58/24 Primary

  Condensing arrangements · CPC title

• D06F2103/36

  Flow or velocity · CPC title

• D06F33/69 Primary

  Control of cleaning or disinfection of washer-dryer parts, e.g. of tubs · CPC title

• D06F2105/30

  Blowers · CPC title