Portable blowing device

Patent metadata

Field	Value
Publication number	US-12060893-B2
Application number	US-202117315274-A
Country	US
Kind code	B2
Filing date	May 8, 2021
Priority date	Oct 9, 2019
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

A portable blowing device includes a body and fans arranged in the body. Air channels are arranged in the body and extend in the length direction of the body to allow airflow to pass through. Wind shields are arranged in the air channels, and a periphery of the wind shield is closely connected with a side wall of the air channel so that a sub-air channel is formed between the wind shield and the side wall of the air channel. Air outlets are formed in the side wall for communicating with outside and the sub-air channel, and airflow generated by the fan can enter the sub-air channel and then exits the air outlets. Because of the reduced volume of the sub-air channel, the airflow is concentrated after entering the sub-air channel, and airflow exiting the air outlets is strengthened, so that the cooling effect and the user experience are improved.

First claim

What is claimed is:

1. A portable blowing device for being hung around a neck of a user, comprising:
a body comprising supports; and
a fan arranged in the body;
wherein an air channel communicating with the fan is arranged in the supports, and an air guiding member is arranged in the air channel to divide the air channel into a first air channel and a second air channel, a side wall of the support surrounding the air channel comprises a first section and a second section located on opposite sides of the air guiding member, the first section is provided with first air outlets communicating with the first air channel, and the second section is provided with second air outlets communicating with the second air channel.

2. The portable blowing device according to claim 1 , wherein the support comprises an inner side wall close to the neck of the user and an outer side wall away from the neck of the user, the first air outlets and the second air outlets are arranged on the inner side wall, a starting end of the air guiding member divides an inlet of the air channel into a first air inlet and a second air inlet, the first air inlet and the second air inlet respectively communicate with the first air channel and the second air channel, and an area of the first air inlet is smaller than that of the second air inlet.

3. The portable blowing device according to claim 2 , wherein a guide vane is arranged in the second air channel.

4. The portable blowing device according to claim 3 , wherein a distance between an end of the guide vane close to the fan and a lower side wall of the support is greater than a distance between an end of the guide vane away from the fan and the lower side wall of the support; or
two sides of the guide vane in a width direction thereof closely contact with an inner wall of the second air channel.

5. The portable blowing device according to claim 1 , wherein the first air channel is gradually enlarged from an end away from the fan toward the fan, and the second air channel is gradually enlarged from an end away from the fan toward the fan.

6. The portable blowing device according to claim 5 , wherein the air guiding member comprises a first guiding plate and a second guiding plate, ends of the first guiding plate and the second guiding plate close to the fan are connected with each other, and ends of the first guiding plate and the second guiding plate away from the fan are respectively connected with a side wall of the air channel.

7. The portable blowing device according to claim 6 , wherein the air guiding member further comprises a connecting plate connecting the first guiding plate with the second guiding plate, one of the connecting plate and the side wall of the support surrounding the air channel is formed with a positioning stud, and the other one is formed with a positioning hole for insertion of the positioning stud.

8. The portable blowing device according to claim 5 , wherein the body further comprises a connector, the supports are respectively connected to opposite ends of the connector, a semiconductor temperature control device is arranged in the connector, and the semiconductor temperature control device comprises a heat sink arranged in the connector, a heat conducting member arranged on an inner side wall of the connector, a semiconductor refrigeration sheet attached between the heat sink and the heat conducting member, and a cooling fan arranged at one end of the heat sink.

9. The portable blowing device according to claim 1 , wherein the body comprises a flexible connector and supports respectively connected to opposite ends of the flexible connector, the fan and the air channel are disposed in the supports, and the flexible connector comprises a bending and shaping member inside.

Assignees

• Shenzhen Lanhe Tech Co Ltd

Inventors

• Liu Kai
• Wu Xunhuan
• Yang Guang
• Li Weiping
• Zhu Jun
• Lv Quan
• Lai You
• Li Tong

Classifications

• A61F2007/0011

  Neck only · CPC title

• F25B21/02

  using Peltier effect; using Nernst-Ettinghausen effect · CPC title

• F04D29/441

  especially adapted for elastic fluid pumps · CPC title

• F04D29/4246

  comprising more than one outlet · CPC title

• F04D25/0673

  Battery powered · CPC title