Hand-held vacuum cleaner

Patent metadata

Field	Value
Publication number	US-10575688-B2
Application number	US-201615539159-A
Country	US
Kind code	B2
Filing date	Mar 22, 2016
Priority date	Jan 20, 2016
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

The present disclosure relates to a hand-held vacuum cleaner (100), comprising a housing (1), a dust cup (2) and an electrical motor (3). The housing (1) is provided with an air inlet (111), an air outlet (311) and an air blowing vent (121), and the air blowing vent (121) is disposed adjacent to the air inlet (111). The dust cup (2) is disposed to the housing (1), and the dust cup (2) is connected to the air inlet (111). The electrical motor (3) is provided with an electrical motor chamber (31), airflow from the air inlet (111) switchably flows out through at least one of the air outlet (311) and the air blowing vent (121) by means of a switching mechanism (4) after flowing through the dust cup (2) and the electrical motor (3).

First claim

What is claimed is:

1. A hand-held vacuum cleaner, comprising:
a housing provided with an air inlet, an air outlet and an air blowing vent, the air blowing vent being disposed adjacent to the air inlet;
a dust cup disposed to the housing, the dust cup being connected to the air inlet; and
an electrical motor provided with an electrical motor chamber, an airflow entering from the air inlet flowing through the dust cup and the electrical motor, and switchably flowing out through at least one of the air outlet and the air blowing vent by means of a switching mechanism;
wherein the switching mechanism is configured to be movable between a communication position communicating the air blowing vent with the electrical motor chamber and an isolation position isolating the air blowing vent from the electrical motor chamber;
wherein the switching mechanism closes or partially closes the air outlet when the switching mechanism is in the communication position, and the air outlet is in communication with the electrical motor chamber when the switching mechanism is in the isolation position;
wherein the switching mechanism comprises a push plate movably disposed to the housing, and a communicating opening is formed in the push plate, the communicating opening communicates the air blowing vent and the electrical motor chamber when the switching mechanism is in the communication position;
wherein the push plate is provided with a closing plate, and the closing plate closes or partially close the air outlet when the switching mechanism is in the communication position;
wherein when the closing plate partially closes the air outlet, there is a gap between the closing plate and the air outlet or the closing plate closes a portion of the air outlet;
wherein the switching mechanism further comprises a resetting member disposed between the electrical motor and the closing plate, the resetting member normally pushes the push plate in a direction of the isolation position;
wherein the resetting member is a spring;
wherein the push plate extends in a front-and-rear direction;
wherein the push plate is provided with a push button.

2. The hand-held vacuum cleaner according to claim 1 , further comprising:
a floor brush provided with a floor brush inlet, a floor brush outlet and a floor brush opening, wherein the floor brush inlet is in communication with the air blowing vent, the floor brush outlet is in communication with the air inlet, the floor brush opening is located at a side of the floor brush away from the housing, and the airflow blowing from the air blowing vent first flows to the floor brush opening through the floor brush inlet and then flows to the air inlet through the floor brush outlet.

3. The hand-held vacuum cleaner according to claim 2 , wherein the floor brush defines an air inlet channel, the floor brush inlet is formed in a free end of the air inlet channel, and the air inlet channel has a section area gradually reducing in a flow direction of the airflow.

4. The hand-held vacuum cleaner according to claim 2 , wherein the housing is provided with an air inlet pipe, the air inlet is formed in a free end of the air inlet pipe, and the free end of the air inlet pipe is connected to the floor brush outlet in an insertion manner.

5. The hand-held vacuum cleaner according to claim 2 , wherein a baffle is disposed to a side of the floor brush opening located at the air blowing vent.

6. The hand-held vacuum cleaner according to claim 5 , wherein a bristle is disposed to a portion, excluding the side of the floor brush opening located at the air blowing vent, of the floor brush opening.

7. The hand-held vacuum cleaner according to claim 2 , wherein the floor brush is a pet brush.

8. The hand-held vacuum cleaner according to claim 2 , wherein the floor brush is removably connected to the housing.

9. The hand-held vacuum cleaner according to claim 1 , wherein the dust cup comprises a first cyclone, a cyclone assembly, and a filtration member, the first cyclone has an air intake channel having a first air intake and a first air vent, the cyclone assembly comprises a plurality of second cyclones arranged in parallel along a circumferential direction of the first cyclone, a guiding channel is defined between two of the plurality of the second cyclones, the guiding channel is in communication with the first air vent and the airflow is guided to an outer circumference of the cyclone assembly along a tangent line to a circumferential wall of the second cyclone adjacent to the guiding channel, each second cyclone has an air inducing notch to allow the airflow to enter the second cyclone in a tangent direction, each second cyclone is provided with an air guiding pipe, the air guiding pipe is spaced apart from an inner circumferential wall of the second cyclone, the air guiding pipe has an air guiding inlet and an air guiding outlet, the air guiding inlet is in communication with the air inducing notch, the filtration member is disposed along the outer circumference of the cyclone assembly, the airflow in the outer circumference of the cyclone assembly tangentially enters the second cyclone through the filtration member and the air inducing notch.

10. The hand-held vacuum cleaner according to claim 9 , wherein the air guiding pipe is disposed eccentrically relative to the second cyclone,
wherein the air guiding pipe extends in a vertical direction;
wherein the air guiding pipe is provided with a separating plate therein;
wherein the air guiding pipe is located at an upper portion of the second cyclone;
wherein the air guiding inlet is formed in a lower end of the air guiding pipe, and the air guiding outlet is formed in an upper end of the air guiding pipe;
wherein the filtration member is disposed surrounding the cyclone assembly, an avoiding notch is formed in the filtration member, and the avoiding notch and the guiding channel face each other;
wherein a connecting wall tangent to a side wall of the second cyclone is connected to a side of the air inducing notch of each second cyclone, and an extension part extends from the other side of the air inducing notch, and an air inducing channel in a tangent direction is defined between the extension part and the connecting wall;
wherein in a flow direction of the airflow, the extension part extends in a direction of the corresponding connecting wall;
wherein an inner wall of an end of the air intake channel having the first air vent has a guiding surface configured to guide the airflow in the air intake channel to the guiding channel;
wherein the guiding surface is formed as a curved surface;
wherein the guiding channel is configured to have a width gradually increasing in a flow direction of the airflow;
wherein an opening is formed in a bottom of each second cyclone; and
wherein the filtration member is a filter mesh, or an inserting sheet having a filtration hole.

11. The hand-held vacuum cleaner according to claim 1 , wherein the air blowing vent extends obliquely in a direction of the air inlet.

12. The hand-held vacuum cleaner according to claim 1 , wherein an air inlet pipe is disposed to the housing, the air inlet is formed in a free end of the air inlet pipe, and in a flow direction of the airflow, an end surface of the free end of the air inlet pipe extends obliquely in a direction away from the air blowing vent.

13. The hand-held vacuum cleaner according to claim 12 , wherein the end surface of the free end of the air inlet pipe is formed as an inclined plane.

14. The hand-held vacuum cleaner according to claim 1 , wherein an air blowing channel is defined in the housing, an end o

Assignees

• Jiangsu Midea Cleaning Appliances Co Ltd

Inventors

• Zhong Min
• Wang Xinzhou
• Wang Yonghua

Classifications

• A47L9/1625

  for series flow · CPC title

• A47L7/04

  for using the exhaust air for other purposes, e.g. for distribution of chemicals in a room, for sterilisation of the air (spraying or atomising in general B05) · CPC title

• B04C5/08

  Vortex chamber constructions · CPC title

• B04C5/26

  for series flow · CPC title

• B04C9/00

  Combinations with other devices, e.g. fans, {expansion chambers, diffusors, water locks}(with filters B01D50/00) · CPC title