# US 10,765,280 B2 · Vacuum cleaner and control method for the same

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- Number: US 10,765,280 B2
- Document ID: US10765280B2
- Status: Granted
- Kind: B2
- Application number: 15/540,014
- Filed: 2015-12-22
- Published: 2018-02-15
- Granted: 2020-09-08
- Earliest claimed: 2014-12-26
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Dong Wook Kim; Ki Hwan Kwon; Jin Wook Yoon; Dong Woo Ha; Seok Man Hong
- Web page: https://patentgrep.com/patent/US10765280B2

## CPC

- A47L 9/0081: {Means for exhaust-air diffusion; Means for sound or vibration damping}
- A47L 5/22: with rotary fans
- A47L 9/00: Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L 9/2826: {the condition of the floor}
- A47L 9/2852: {Elements for displacement of the vacuum cleaner or the accessories therefor, e.g. wheels, casters or nozzles}
- A47L 2201/00: Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
- A47L 2201/04: Automatic control of the travelling movement; Automatic obstacle detection
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)

## Abstract

Disclosed is a vacuum cleaner including a flow path to guide air suctioned or discharged and a resonator connected to the flow path. The resonator is configured to change a resonance frequency to be canceled. Therefore, when the noise generated by changing operation modes of the vacuum cleaner is changed, the noise may be cancelled by changing the resonance frequency of the resonator.

## Claims

### Claim 1

A vacuum cleaner comprising:
a suction unit configured to suction and discharge air;
a suction flow path configured to guide air to be suctioned into the suction unit;
a discharge flow path configured to guide air to be discharged from the suction unit;
a suction resonator connected to the suction flow path to cancel a suction noise;
a discharge resonator connected to the discharge flow path to cancel a discharge noise; and
a processor configured to:
receive an operation mode of the vacuum cleaner, and
control, based on the operation mode of the vacuum cleaner, the suction resonator to change a resonant frequency of the suction flow path to be canceled and the discharge resonator to change a resonant frequency of the discharge flow path to be canceled.

### Claim 2 (depends on 1)

The vacuum cleaner of claim 1, wherein the suction resonator comprises:
a resonance container formed in a hollow container shape to form a resonance space; and
a piston installed to be movable forward and backward in the resonance container.

### Claim 3 (depends on 2)

The vacuum cleaner of claim 2, further comprising:
a driving device configured to move the piston forward and backward.

### Claim 4 (depends on 3)

The vacuum cleaner of claim 3, wherein the driving device comprises:
a driving motor;
a pinion rotated by the driving motor; and
a rack connected to the piston and engaged with the pinion.

### Claim 5 (depends on 2)

The vacuum cleaner of claim 2, further comprising:
a lever configured to transmit an external force to the piston.

### Claim 6 (depends on 2)

The vacuum cleaner of claim 2, wherein:
the suction resonator comprises:
a resonance container formed in a hollow container shape to form a resonance space; and
a connection pipe configured to connect the suction flow path to the resonance container, and
a length of the connection pipe is variable.

### Claim 7 (depends on 6)

The vacuum cleaner of claim 6, wherein the connection pipe comprises:
a first connection pipe extending from the suction flow path; and
a second connection pipe extending from the resonance container and movably installed in the first connection pipe.

### Claim 8 (depends on 1)

The vacuum cleaner of claim 1, wherein the suction resonator and the discharge resonator are changed to different resonant frequencies.

### Claim 9 (depends on 1)

The vacuum cleaner of claim 1, wherein the suction flow path comprises:
a main flow path; and
a bypass flow path diverged from the main flow path and then joined into the main flow path, and
the suction resonator is connected to the bypass flow path.

### Claim 10 (depends on 1)

The vacuum cleaner of claim 1, wherein the suction resonator comprises a resonance container formed by an expandable and contractible bellows tube.

### Claim 11

A vacuum cleaner comprising:
a suction flow path configured to guide suction of air;
a discharge flow path configured to guide discharge of air;
a suction resonator connected to the suction flow path; and
a discharge resonator connected to the discharge flow path,
wherein the suction resonator comprises a suction resonance container forming a suction resonance space and the discharge resonator comprises a discharge resonance container forming a discharge resonance space; and
a processor configured to:
receive an operation mode of the vacuum cleaner, and
control, based on the operation mode of the vacuum cleaner, the suction resonator to change a volume of the suction resonance space and the discharge resonator to change a volume of the discharge resonance space.

### Claim 12 (depends on 11)

The vacuum cleaner of claim 11, further comprising:
a piston installed to be movable in the suction resonance container and configured to change the volume of the suction resonance space while moving.

### Claim 13 (depends on 11)

The vacuum cleaner of claim 11, wherein the suction resonance container is formed by an expandable and contractible bellows tube.

### Claim 14

A vacuum cleaner comprising:
a suction flow path configured to guide suction of air;
a discharge flow path configured to guide discharge of air;
a suction resonator connected to the suction flow path, wherein the suction resonator comprises a suction resonance container forming a suction resonance space and a suction connection pipe connecting the suction flow path to the suction resonance container, wherein a length of the suction connection pipe is variable;
a discharge resonator connected to the discharge flow path, wherein the discharge resonator comprises a discharge resonance container forming a discharge resonance space and a discharge connection pipe connecting the discharge flow path to the discharge resonance container, wherein a length of the discharge connection pipe is variable; and
a processor configured to:
receive an operation mode of the vacuum cleaner, and
control, based on the operation mode of the vacuum cleaner, the length of the suction connection pipe and the length of the discharge connection pipe.

### Claim 15 (depends on 14)

The vacuum cleaner of claim 14, wherein the suction connection pipe comprises:
a first connection pipe extending from the suction flow path; and
a second connection pipe extending from the suction resonance container and movably installed in the first connection pipe.

### Claim 16

A control method for a vacuum cleaner comprising:
allowing air to flow via a flow path by driving a suction unit, wherein the flow path includes a suction flow path and a discharge flow path;
detecting a frequency of noise generated in the flow path during the air flows; and
changing, based on an operation of the vacuum cleaner, a resonant frequency of a suction resonator connected to the suction flow path and a resonant frequency of a discharge resonator connected to the discharge flow path in a manner that both of the resonant frequencies corresponds to the frequency of the noise.

### Claim 17 (depends on 16)

The control method of claim 16, wherein:
the suction resonator comprises a resonance container formed in a hollow container shape to form a resonance space therein, and
the change in the resonant frequency of the suction resonator is performed according to the change in a volume of the resonance space.

### Claim 18 (depends on 16)

The control method of claim 16, wherein:
the suction resonator comprises a connection pipe configured to connect the flow path to a resonance container, and
the change in the resonant frequency of the suction resonator is performed according to the change in a length of the connection pipe.