Hair dryer

Patent metadata

Field	Value
Publication number	US-11540610-B2
Application number	US-202017124673-A
Country	US
Kind code	B2
Filing date	Dec 17, 2020
Priority date	May 12, 2020
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A hair dryer is provided that may include a main body including a discharge outlet through which fluid may be discharged outside of the main body, a handle that extends from the main body, including an inlet through which fluid enters the handle, a flow path that extends from the inlet to the discharge outlet, a fan provided inside of the handle, and provided in the flow path to blow the fluid, and a noise attenuation space provided inside of the handle, and to surround at least a portion of the fan along an inner circumferential direction of the handle, attenuating noise generated by the fan.

First claim

What is claimed is:

1. A hair dryer, comprising:
a main body including a discharge outlet through which fluid is discharged outside of the main body;
a handle that extends from the main body, including an inlet through which external fluid enters the handle;
a flow path that extends from the inlet to the discharge outlet;
a fan provided inside of the handle, and provided in the flow path; and
a noise attenuation portion provided inside of the handle and surrounding at least a portion of the fan along an inner circumferential direction of the handle, the noise attenuating portion attenuating noise generated by the fan, wherein the noise attenuation portion includes a noise attenuation space provided between the inner circumferential surface of the handle and the fan to space the handle and the fan apart, and wherein a first end of the noise attenuation space is closed and a second end of the noise attenuation space is open.

2. The hair dryer of claim 1 , wherein the first end of the noise attenuation space faces the main body with respect to the flow path, and wherein the second end of the noise attenuation space faces the inlet and communicates with the flow path.

3. The hair dryer of claim 2 , wherein the fan includes:
a fan motor; and
a plurality of blades rotated by the fan motor, wherein the plurality of blades is arranged at an end of the fan motor, which faces the inlet.

4. The hair dryer of claim 3 , wherein the open second end is closer to the inlet than the fan.

5. The hair dryer of claim 2 , further comprising a first closure portion that protrudes from the inner circumferential surface of the handle, having a ring shape extended along the inner circumferential direction of the handle, wherein the first end of the noise attenuation space is closed by the first closure portion with respect to the flow path.

6. The hair dryer of claim 5 , wherein the fan is connected with the first closure portion and fixed to be spaced apart from the inner circumferential surface of the handle.

7. The hair dryer of claim 6 , wherein the fan includes:
a fan motor that rotates a plurality of blades; and
a motor housing that accommodates the fan motor therein, wherein a first end of the motor housing faces the main body and is coupled with the first closure portion, and wherein the noise attenuation space is formed between the motor housing and the inner circumferential surface of the handle.

8. The hair dryer of claim 6 , further comprising a fan holder that extends from the first closure portion to the inlet and accommodates the fan therein, wherein the noise attenuation space is formed between an outer side of the fan holder and the inner circumferential surface of the handle.

9. The hair dryer of claim 5 , further comprising a second closure portion spaced apart from the fan toward the inlet, protruding from the inner circumferential surface of the handle, and having a ring shape that extends along the inner circumferential direction of the handle, wherein the open second end is formed between the fan and the second closure portion.

10. The hair dryer of claim 9 , wherein the second closure portion has a protrusion height in a radial direction of the handle higher than a protrusion height of the first closure portion, and wherein the open second end is open to cross a lengthwise direction of the handle.

11. The hair dryer of claim 9 , further comprising a filter provided inside of the handle, that filters particles of gas entering through the inlet, wherein the filter is arranged to be opposite to the fan based on the second closure portion, and one end of the filter faces for the main body and is coupled to the second closure portion.

12. The hair dryer of claim 11 , wherein the inlet includes a plurality of inlet holes provided on an outer circumferential surface of the handle, that communicates an outside of the handle with the flow path, and wherein the filter has an outer circumferential surface provided to face the inner circumferential surface of the handle and filter fluid entering through the plurality of inlet holes.

13. The hair dryer of claim 12 , wherein the handle is provided with a filer insertion unit formed on an end surface opposite to the main body to allow the filter to be inserted thereto, and wherein the filter is inserted into the handle through the filter insertion unit and an end of the filter is coupled to the second closure portion.

14. A hair dryer, comprising:
a main body including a discharge outlet through which fluid is discharged outside of the main body;
a handle that extends from the main body, including an inlet through which external fluid enters the handle;
a flow path that extends from the inlet to the discharge outlet;
a fan provided inside of the handle, and provided in the flow path; and
a noise attenuation space provided inside of the handle and surrounding at least a portion of the fan along an inner circumferential direction of the handle, the noise attenuating portion attenuating noise generated by the fan, wherein the noise attenuation space is provided between the inner circumferential surface of the handle and the fan to space the handle and the fan apart, and wherein a first end of the noise attenuation space is closed and a second end of the noise attenuation space is open.

15. The hair dryer of claim 14 , wherein the first end of the noise attenuation faces the main body with respect to the flow path, and wherein the second end of the noise attenuation space faces the inlet and communicates with the flow path.

16. The hair dryer of claim 15 , wherein the fan includes:
a fan motor; and
a plurality of blades rotated by the fan motor, wherein the plurality of blades is arranged at an end of the fan motor, which faces the inlet.

17. The hair dryer of claim 15 , wherein the open second end is closer to the inlet than the fan.

18. The hair dryer of claim 15 , further comprising a filter provided inside of the handle, that filters particles of gas entering through the inlet.

19. A hair dryer, comprising:
a main body including a discharge outlet through which fluid is discharged outside of the main body;
a handle that extends from the main body, including an inlet through which external fluid enters the handle;
a flow path that extends from the inlet to the discharge outlet;
a fan provided inside of the handle, and provided in the flow path; and
a noise attenuation space provided inside of the handle and adjacent at least a portion of the fan, the noise attenuating portion attenuating noise generated by the fan, wherein the fan is spaced apart from the handle by the noise attenuation space, and wherein a first end of the noise attenuation space is closed with respect to the flow path, and wherein a second end of the noise attenuation space is open and communicates with the flow path.

20. The hair dryer of claim 19 , further comprising a first closure portion that protrudes from an inner circumferential surface of the handle, having a ring shape extended along an inner circumferential direction of the handle, wherein the first end of the noise attenuation space is closed by the first closure portion with respect to the flow path, and wherein the fan is connected with the first closure portion and fixed to be spaced apart from the inner circumferential surface of the handle.

21. The hair dryer of claim 20 , further comprising a fan holder that extends from the first closure portion to the inlet and accommodates the fan therein, wherein the noi

Assignees

• Lg Electronics Inc

Inventors

• Park Goondong
• MIN Kyungseok
• Kim Jounyoung
• Hwang Geunbae

Classifications

• A45D20/12 Primary

  Details thereof or accessories therefor, e.g. nozzles, stands · CPC title

• F04D29/325

  for axial flow fans (blade mountings F04D29/34, blades F04D29/38) · CPC title

• F04D29/522

  especially adapted for elastic fluid pumps · CPC title

• F04D29/663

  Sound attenuation · CPC title

• A45D20/10

  Hand-held drying devices, e.g. air douches · CPC title