Hand-held vacuum cleaner

• US 10,335,002 B2
• Filed: 06/28/2017
• Issued: 07/02/2019
• Est. Priority Date: 01/20/2016
• Status: Active Grant

• Current Assignee: Jiangsu Midea Cleaning Appliances Co., Ltd. (Midea Group Co., Ltd)
• Original Assignee: Jiangsu Midea Cleaning Appliances Co., Ltd. (Midea Group Co., Ltd)
• Inventors: Wang, Xinzhou, Wang, Yonghua, Zhong, Min
• Primary Examiner(s): Scruggs, Robert J
• Application Number:
  US15/636,082
• Publication Number:
  US 20170296018A1
• Time in Patent Office: 734 Days
• CPC Class Codes: A01K 13/002 Curry-combs; Brushes shearing sheep B26B19/24
• CPC Class Codes: A47L 5/14 cleaning by blowing-off, also combined with suction cleaning
• CPC Class Codes: A47L 5/24 Hand-supported suction cleaners
• CPC Class Codes: A47L 9/0673 with removable brushes, combs, lips or pads
• CPC Class Codes: A47L 9/08 with means adapted for blowing
• CPC Class Codes: A47L 9/12 Dry filters
• CPC Class Codes: A47L 9/122 flat
• CPC Class Codes: A47L 9/1625 for series flow
• CPC Class Codes: A47L 9/1641 for parallel flow
• CPC Class Codes: A47L 9/165 Construction of inlets
• CPC Class Codes: A47L 9/1683 Dust collecting chambers; Dust collecting receptacles
• CPC Class Codes: A47L 9/22 Mountings for motor fan assemblies

Abstract

A hand-held vacuum cleaner includes a dust cup including a first cyclone, a cyclone assembly, and a filtration member. The cyclone assembly includes a plurality of second cyclones, 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 an airflow is guided to an outer circumference of the cyclone assembly by the guiding channel 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 and is provided with an air guiding pipe, the filtration member is disposed along the outer circumference of the cyclone assembly, and the airflow in the outer circumference of the cyclone assembly tangentially enters the second cyclone through the filtration member and the air inducing notch.

Claims

1. A hand-held vacuum cleaner, comprising:

a dust cup comprising a first cyclone, a cyclone assembly, and a filtration member, wherein

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 an 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; and

a housing having a first end provided with an air inlet and an air blowing vent wherein the dust cup is disposed within the housing and connected to the air inlet the air blowing vent is disposed adjacent to the air inlet.

2. The hand-held vacuum cleaner according to claim 1, wherein the air guiding pipe is disposed eccentrically relative to the second cyclone.

3. The hand-held vacuum cleaner according to claim 1, wherein the air guiding pipe extends in a vertical direction.

4. The hand-held vacuum cleaner according to claim 1, wherein the air guiding pipe is provided with a separating plate therein.

5. The hand-held vacuum cleaner according to claim 1, wherein the air guiding pipe is located in an upper portion of the second cyclone.

6. Claim 1, has been amended to more positively define that both the air inlet and the air blowing vent are disposed on the same end of the housing thereby placing the application in better condition for allowance.

7. The hand-held vacuum cleaner according to claim 1, 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.

8. The hand-held vacuum cleaner according to claim 1, 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.

9. The hand-held vacuum cleaner according to claim 1, wherein an inner wall of an end of the air intake channel having the first air vent has a L-shaped guiding surface configured to guide the airflow in the air intake channel to the guiding channel.

10. The hand-held vacuum cleaner according to claim 1, wherein the guiding channel is configured to have a width gradually increasing in a flow direction of the airflow.

11. The hand-held vacuum cleaner according to claim 1, wherein an opening is formed in a bottom of each second cyclone.

12. The hand-held vacuum cleaner according to claim 1, wherein the filtration member is a filter mesh, or an inserting sheet having a filtration hole.

13. The hand-held vacuum cleaner according to claim 1, wherein an electrical motor is disposed in the housing, the electrical motor is provided with an electrical motor chamber in communication with the dust cup, the airflow from the air inlet flows through the dust cup and the electrical motor, and flows out from the air blowing vent.

14. The hand-held vacuum cleaner according to claim 13, wherein the air blowing vent extends obliquely in a direction of the air inlet.

15. The hand-held vacuum cleaner according to claim 13, wherein an air blowing channel is defined in the housing, an end of the air blowing channel is in communication with the electrical motor chamber, and the air blowing vent is formed in the other end of the air blowing channel.

16. The hand-held vacuum cleaner according to claim 13, wherein the air blowing vent is switchably connected to the electrical motor chamber.

17. The hand-held vacuum cleaner according to claim 13, wherein a dust outlet is formed in a bottom of the dust cup, and the hand-held vacuum cleaner further comprising:

an ash pouring plate disposed to a bottom of the housing, and the ash pouring plate being configured to be movable between an open position where the dust outlet is opened and a closed position where the dust outlet is closed.

18. The hand-held vacuum cleaner according to claim 13, wherein an outlet filtration member is disposed between the dust cup and the electrical motor.