Neck fan

Patent metadata

Field	Value
Publication number	US-11754080-B2
Application number	US-202217739081-A
Country	US
Kind code	B2
Filing date	May 7, 2022
Priority date	Oct 25, 2019
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A neck fan includes an arc-shaped shell and a fan assembly. The arc-shaped shell is configured to be worn around a neck of a user. The shell has a first side and a second side opposite to the first side. Each of the first side and the second side defines air inlets. At least one of the first side and the second side defines air outlets. The shell further defines a receiving space, and the receiving space includes an air duct communicating with the air inlets and outlets. The fan assembly is received in the receiving space and configured to drive the air to flow from the air inlets of both sides, through the air duct, reaching the air outlets.

First claim

The invention claimed is:

1. A neck fan, comprising:
an arc-shaped shell, configured to be worn around a neck of a user,
wherein the shell comprises a wall defining a receiving space, and the wall comprises a first side wall close to the neck and a second side wall connected to and opposite to the first side wall; and
each of the first side wall and the second side wall defines a plurality of air inlets, at least one of the first side wall and the second side wall defines a plurality of air outlets, and the plurality of air inlets and the plurality of air outlets are communicating with the receiving space;
a fan assembly, received in the receiving space of the shell, wherein the fan assembly comprises a driving shaft and a fan blade assembly mounted on the driving shaft;
the fan blade assembly is a turbine blade assembly; and
the turbine blade assembly comprises a turbine fan, and the turbine fan defines two inlet windows corresponding to the air inlets of the first side wall and the second side wall respectively;
wherein the receiving space comprises a first air duct and a second air duct corresponding to the fan assembly, the plurality of air outlets comprise a first air outlet and a second air outlet corresponding to the fan assembly;
the first air duct and the first air outlet are located at a first side of the fan assembly; and
the second air duct and the second air outlet are located at a second side of the fan assembly; and
the fan assembly is configured to drive the air from the plurality of air inlets in the first side wall and the second side wall to flow through the first air duct and the second air duct to reach the first air outlet and the second air outlet,
wherein the second air outlet is located on the second side of the fan assembly;
the neck fan further comprises a wind guide tongue received in the receiving cavity and surrounds the fan assembly;
the wind guide tongue comprises a first end, arranged on the shell and disposed near the second air outlet, and a second end extending away from the second air outlet;
the second end comprises a bent portion and a free end connected to the bent portion, and the free end extends towards the first end of the wind guide tongue.

2. The neck fan according to claim 1 ,
wherein the arc-shaped shell comprises a first portion configured to be worn around a side of the neck and a second portion configured to be worn around another side of the neck, the receiving space comprises a first receiving space and a second receiving space, the first receiving space is defined in the first portion, and the second receiving space is defined in the second portion;
the neck fan further comprises a partition, received in each of the first receiving space and the second receiving space, wherein the partition is configured to divide each of the first receiving space and the second receiving space into at least two receiving sub-spaces, wherein the at least two receiving sub-spaces are distributed along an extension direction of the arc-shaped shell;
wherein each of the first air duct and the second air duct is defined by the partition and the wall cooperatively; and
a cross-sectional area of each of the first air duct and the second air duct is decreased along a direction away from the fan assembly.

3. The neck fan according to claim 1 , wherein,
the second air outlet comprises a first sub-outlet and a second sub-outlet, the first sub-outlet and the second sub-outlet are located on the second side of the fan assembly; and
the neck fan further comprises a first wind guide member and a second wind guide member;
the first air guide member is connected to a portion of the wall that defines the first sub-outlet, and an end of the first air guide member is disposed near the first sub-outlet;
the second air guide member is connected to another portion of the wall that defines the second sub-outlet, and an end of the second air guide member is disposed near the second sub-outlet;
the first air guide member is configured to guide the air to flow to the first sub-outlet, and the second air guide member is configured to guide the air to flow to the second sub-outlet; and
the first air outlet and the fan assembly are disposed at two opposite sides of the wind guide tongue.

4. The neck fan according to claim 1 , further comprising a cover, disposed on a side of the second side wall away from the first side wall and corresponding to at least one of the air inlets in the second side wall;
wherein a gap is defined between an edge of the cover and the second side wall and is communicated with the corresponding air inlet;
the cover is configured in a first mounting state or in a second mounting state;
in the first mounting state, the cover is configured to allow the air to enter the fan assembly through the gap and the air inlet in the second side wall;
in the second mounting state, the cover is configured to block the gap and the air inlet in the second side wall; and
the cover is capable of being switched between the first mounting state and the second mounting state.

5. The neck fan according to claim 1 , wherein,
the shell comprises a first shell, a second shell, and a third shell, the first shell and the second shell are opposite to each other and are configured to face two opposite sides of the neck, the third shell is disposed between and connected to the first shell and the second shell;
the receiving space comprises a first sub-space, a second sub-space, and a third sub-space, the first sub-space is defined in the first shell, the second sub-space is defined in the second shell, and the third sub-space is defined in the third shell;
each of the first shell, the second shell, and the third shell defines at least one of the plurality of air inlets and at least one of the plurality of air outlets;
the fan assembly comprises a first fan assembly, a second fan assembly and a third fan assembly;
the first fan assembly is received in the first sub-space and is configured to drive the air to flow from the at least one of the plurality of air inlets in the first sub-space to flow to the at least one of the plurality of air outlets in the first sub-space;
the second fan assembly is received in the second sub-space and is configured to drive the air to flow from the at least one of the plurality of air inlets in the second sub-space to flow to the at least one of the plurality of air outlets in the second sub-space; and
the third fan assembly is received in the third sub-space and is configured to drive the air to flow from the at least one of the plurality of air inlets in the third sub-space to flow to the at least one of the plurality of air outlets in the third sub-space.

6. The neck fan according to claim 1 , further comprising a battery holder and a battery, wherein,
the battery holder is received in the receiving space;
the battery holder and the first side wall cooperatively define a cavity;
a side of the battery holder facing the second side wall defines a slot;
the battery is received in the slot;
the fan assembly is mounted on the first side wall and received in the cavity; and
the neck fan further comprises at least one partition received in the cavity;
wherein the first air duct or the second air duct is defined by the at least one partition, the battery holder and the first side wall cooperatively; and
a cross-sectional area of each of the first air duct and the second air duct is decreased along a direction away from the fan assembly.

7. The neck fan according to claim 1 , wherein,
the shell comprises a first shell, a second shell, and a third shell, the third shell is disposed between and connected to the first shell and the second shell;
each of two opposite ends of the third shell is

Assignees

• Shenzhen Jisu Tech Co Ltd

Inventors

• Xie Jiahang
• Zheng Guanzheng
• Li Xiangfu

Classifications

• F04D29/441

  especially adapted for elastic fluid pumps · CPC title

• F04D19/002

  Axial flow fans · CPC title

• F04D29/4226

  Fan casings · CPC title

• F04D25/08

  the working fluid being air, e.g. for ventilation · CPC title

• F04D17/16

  for displacing without appreciable compression · CPC title