Sensor module and laundry treating apparatus having the same

Patent metadata

Field	Value
Publication number	US-11459693-B2
Application number	US-202016751553-A
Country	US
Kind code	B2
Filing date	Jan 24, 2020
Priority date	Feb 1, 2019
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

The present disclosure relates to a sensor module and a laundry treating apparatus including the same. The laundry treating apparatus includes a cabinet forming an outer shape of the apparatus, a tub disposed inside the cabinet in a vibrating manner, a drum rotatably disposed inside the tub, a motor disposed on the tub to rotate the drum, a water supplier for supplying washing water to the tub, a water discharger for discharging the washing water in the tub, a sensor module detecting a water level of the washing water stored in the tub, and at the same time, detecting a vibration of the tub, and a sensor module mount disposed on a rear portion of a top of the tub, wherein the sensor module is detachably installed into the sensor module mount.

First claim

What is claimed is:

1. A laundry treating apparatus comprising:
a tub;
a drum rotatably disposed inside the tub;
a water discharger configured to discharge washing water from the tub;
a water level detecting pipe disposed at the water discharger and configured to carry air, wherein a pressure change of the air corresponds to a water level of washing water in the tub;
a sensor module connected to the water level detecting pipe and configured to detect the water level of washing water in the tub and a vibration of the tub, the sensor module comprising:
a housing that is in communication with the water level detecting pipe and defines an opened portion,
a cover that covers the opened portion of the housing while exposing a portion of the sensor module, and
a pipe connector that is disposed rearward of the housing, that is in communication with an inner space of the housing, and that is connected to the water level detecting pipe; and

a sensor module mount that is disposed on an upper portion of an outer circumferential surface of the tub and that receives the sensor module therein,
wherein the sensor module mount comprises a support that supports a rear surface of the sensor module and defines a through hole that receives the pipe connector,
wherein the sensor module is inserted into the sensor module mount in a direction from a front side of the tub to a rear side of the tub, and
wherein the pipe connector is inserted into the through hole of the support in the direction from the front side of the tub to the rear side of the tub, exposed to a rear side of the support, and connected to the water level detecting pipe at the rear side of the support.

2. The laundry treating apparatus of claim 1 , wherein the sensor module mount is disposed at a front portion of the tub.

3. The laundry treating apparatus of claim 1 , wherein the sensor module mount is disposed at a front portion of the tub, and is positioned on the outer circumferential surface of the tub within an angular spacing of 30° to 60° with respect to a vertical line passing through a center of the tub.

4. The laundry treating apparatus of claim 1 , wherein the sensor module mount is disposed at a front portion of the tub, and is positioned on the outer circumferential surface of the tub at a position corresponding to an angular spacing of about 40° with respect to a vertical line passing through a center of the tub.

5. The laundry treating apparatus of claim 1 , wherein the water discharger comprises an air chamber configured to accommodate air,
wherein a pressure of air in the air chamber is configured to change based on the water level of washing water in the tub, and
wherein the water level detecting pipe is positioned vertically below the sensor module in a region between the air chamber and the sensor module.

6. The laundry treating apparatus of claim 1 , wherein the sensor module mount comprises:
a first guide comprising a first guide protrusion that supports a first lateral side surface of the sensor module; and
a second guide comprising a second guide protrusion that supports a lateral second side surface of the sensor module, and
wherein the first guide protrusion and the second guide protrusion are configured to restrict movement of the sensor module in a left-right direction.

7. The laundry treating apparatus of claim 6 , wherein the sensor module mount further comprises
an elastic pressing portion that extends from the support to a front surface of the sensor module and that is coupled to the front surface of the sensor module,
wherein the support is disposed between the first guide and the second guide, and
wherein the support and the elastic pressing portion are configured to restrict movement of the sensor module in a front-rear direction.

8. The laundry treating apparatus of claim 7 , wherein the sensor module mount further comprises:
a first support step portion that is disposed at the first guide and that supports a first side of a bottom surface of the sensor module; and
a second support step portion that is disposed at the second guide and that supports a second side of the bottom surface of the sensor module, and
wherein the first support step portion, the second support step portion, and the elastic pressing portion are configured to restrict movement of the sensor module in an up-down direction.

9. The laundry treating apparatus of claim 1 , wherein the sensor module mount further comprises:
a first guide that extends from a first side of the support and that supports a first lateral side surface of the sensor module;
a second guide that extends from a second side of the support and that supports a second lateral side surface of the sensor module; and
an elastic pressing portion disposed on a top portion of the support and that is configured to generate an elastic force to thereby provide pressure to the sensor module.

10. The laundry treating apparatus of claim 9 , wherein the sensor module mount further comprises:
a first step portion that is disposed on the first guide and that supports a first side of a bottom surface of the sensor module; and
a second step portion that is disposed on the second guide and that supports a second side of the bottom surface of the sensor module, and
wherein the elastic pressing portion is configured to support a top surface of the sensor module.

11. The laundry treating apparatus of claim 9 , wherein the sensor module mount further comprises:
a first guide protrusion that protrudes from the first guide and that supports the first lateral side surface of the sensor module; and
a second guide protrusion that protrudes from the second guide toward the first guide protrusion, that faces the first guide protrusion, and that supports the second lateral side surface of the sensor module.

12. The laundry treating apparatus of claim 9 , wherein the sensor module mount further comprises:
a hook protrusion disposed on the elastic pressing portion and coupled to a top portion of a front surface of the sensor module.

13. The laundry treating apparatus of claim 1 , wherein the sensor module further comprises a printed circuit board (PCB) substrate mounted inside the housing, the PCB substrate comprising:
a pressure sensor configured to detect a pressure in the water level detecting pipe,
a vibration sensor configured to detect the vibration of the tub, and
a terminal configured to transmit sensed values of the pressure sensor and the vibration sensor, and
wherein the cover covers the opened portion of the housing while exposing the terminal.

14. The laundry treating apparatus of claim 13 , wherein the housing defines:
a pressure sensor space that is in communication with the water level detecting pipe and that accommodates the pressure sensor therein; and
a vibration sensor space that is separated from the pressure sensor space and that accommodates the vibration sensor therein.

15. The laundry treating apparatus of claim 1 , wherein the support comprises a plate that defines the through hole at an upper center portion thereof, the plate protruding upward from the outer circumferential surface of the tub, and
wherein a bottom surface of the plate extends along the outer circumferential surface of the tub.

Assignees

• Lg Electronics Inc

Inventors

• Lee Kilryong
• Kim Junyoung
• Suh Bokyung

Classifications

• D06F39/087 Primary

  Water level measuring or regulating devices · CPC title

• G01F23/804

  containing circuits handling parameters other than liquid level · CPC title

• D06F2103/18

  Washing liquid level · CPC title

• D06F37/22

  in machines with a receptacle rotating or oscillating about a horizontal axis · CPC title

• D06F34/16

  Imbalance · CPC title