U.S. patent application number 11/518899 was filed with the patent office on 2008-03-13 for heat sink device generating an ionic wind.
This patent application is currently assigned to NENG TYI PRECISION INDUSTRIES CO., LTD.. Invention is credited to Wen-Chen Wei.
Application Number | 20080060794 11/518899 |
Document ID | / |
Family ID | 39168405 |
Filed Date | 2008-03-13 |
United States Patent
Application |
20080060794 |
Kind Code |
A1 |
Wei; Wen-Chen |
March 13, 2008 |
Heat sink device generating an ionic wind
Abstract
A heat sink device has a metal body connected with a voltage
source, multiple sharp teeth formed on one side of the metal body,
and a metal grounded member provided separately from the metal
body. When the metal body is electrified, the sharp teeth are in a
strong electrical field to generate a corona phenomenon, and the
air around the sharp teeth is ionized. The ions having the same
charge with the sharp teeth will be rejected by the sharp teeth,
and all moves to the metal grounded member, whereby an electric
wind is generated to dissipate the heat.
Inventors: |
Wei; Wen-Chen; (Taipei
Hsien, TW) |
Correspondence
Address: |
RABIN & Berdo, PC
1101 14TH STREET, NW, SUITE 500
WASHINGTON
DC
20005
US
|
Assignee: |
NENG TYI PRECISION INDUSTRIES CO.,
LTD.
|
Family ID: |
39168405 |
Appl. No.: |
11/518899 |
Filed: |
September 12, 2006 |
Current U.S.
Class: |
165/109.1 ;
165/80.3 |
Current CPC
Class: |
F21V 29/63 20150115;
F28F 3/02 20130101; F28D 2021/0029 20130101; F21Y 2115/10 20160801;
F21V 29/74 20150115; F28F 13/16 20130101 |
Class at
Publication: |
165/109.1 ;
165/80.3 |
International
Class: |
F28F 13/12 20060101
F28F013/12 |
Claims
1. A heat sink device comprising: a metal body connected with a
voltage source to electrify the metal body, and having multiple
sharp teeth; a metal grounded member mounted separately from the
metal body and corresponding to the sharp teeth on the metal body
to allow an ionic wind to be generated from the sharp teeth to the
metal grounded member when the metal body is electrified.
2. The heat sink device by ionic wind as claimed in claim 1,
wherein the metal body is a vertical sheet, and the sharp teeth are
formed on one side of the sheet.
3. The heat sink device by ionic wind as claimed in claim 1,
wherein the metal body is a vertical piece, and multiple sharp
teeth are formed on one side of the piece.
4. The heat sink device by ionic wind as claimed in claim 1,
wherein the metal grounded member is a vertical piece, and has
multiple openings defined therein.
5. The heat sink device by ionic wind as claimed in claim 1,
wherein the metal grounded member is a reticular piece.
6. The heat sink device by ionic wind as claimed in claim 1,
wherein the metal grounded member comprises multiple cooling
fins.
7. The heat sink device by ionic wind as claimed in claim 1,
wherein multiple cooling fins are provided separately from the
metal grounded member.
8. The heat sink device by ionic wind as claimed in claim 1,
wherein an insulated frame is mounted between the metal body and
the metal grounded member to keep the metal body and the metal
grounded member at an interval.
9. The heat sink device by ionic wind as claimed in claim 8,
wherein multiple cooling fins are provided separately from the
metal grounded member.
10. The heat sink device by ionic wind as claimed in claim 1,
wherein the metal body is a vertical piece, the sharp teeth are
formed in one side of the piece, the metal grounded member is a
vertical piece, and the metal grounded member has multiple openings
defined therein.
11. The heat sink device by ionic wind as claimed in claim 1,
wherein the metal body is a vertical piece, the sharp teeth are
formed in one side of the piece, and the metal grounded member is a
reticular piece.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a heat sink device by an
ionic wind, and particularly relates to a heat sink device
generating an ionic wind based on point discharge principle to
provide a heat dissipation effect.
[0003] 2. Description of the Related Art
[0004] Household electrical appliance normally produces a lot heat
when in use, the heat is transformed from electrical energy.
However, most electrical appliance can not go through high
temperature well, and the electrical appliances are probably
damaged by repeating heat. A heat sink device is often equipped for
the electrical appliance.
[0005] A conventional heat sink device has a metal heat conductor,
which has multiple cooling fins. A fan is mounted on the cooling
fins. The heat from the heat source is transmitted to the cooling
fins, and is dissipated by the fan, or the heat is just dissipated
by the natural convection.
[0006] However, the noise and the using life of the fan are still
problems, and the natural convection device is too big.
[0007] Therefore, the invention provides a heat sink device by
ionic wind to mitigate or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
[0008] The main objective of the present invention is to provide s
heat sink device having a metal body connected with a voltage
source, multiple sharp teeth formed on the metal body and a metal
grounded member mounted separately from the metal body and
connected with the ground.
[0009] When the metal body is electrified, the sharp teeth are in a
strong electrical field to generate a corona phenomenon, and the
air around the sharp teeth is ionized. The ions having the same
charge with the sharp teeth will be rejected by the sharp teeth,
and moves to the metal grounded member, and an electric wind is
formed, which is also called an ionic wind. The ionic wind is
strong enough to bring the air from the metal body to the metal
grounded member, whereby the heat of the metal body is efficiently
dissipated, according to the air convection.
[0010] In this way, the heat sink device of this invention has a
reduced size, and no additional parts are necessary to save the
energy source.
[0011] Other objectives, advantages and novel features of the
invention will become more apparent from the following detailed
description when taken in conjunction with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a perspective view of a first embodiment of a heat
sink device in accordance with the present invention;
[0013] FIG. 2 is a perspective view of a second embodiment of a
heat sink device in accordance with the present invention;
[0014] FIG. 3 is a perspective view of a third embodiment of a heat
sink device in accordance with the present invention;
[0015] FIG. 4 is a perspective view of a fourth embodiment of a
heat sink device in accordance with the present invention;
[0016] FIG. 5 is a perspective view of a fifth embodiment of a heat
sink device in accordance with the present invention;
[0017] FIG. 6 is a side view in partial section of a heat sink
device in accordance with the present invention applied on LED
lights.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0018] With reference to FIG. 1, a first embodiment of a heat sink
device using for an ionic wind in accordance with the present
invention has a metal body (10) connected with a voltage source.
The metal body (10) is a vertical sheet and multiple sharp teeth
(11) are formed on one side of the metal body (10).
[0019] A metal grounded member (20) is a vertical piece, is formed
separately from the metal body (10), corresponds to the sharp teeth
(11), and has multiple openings (21) having an amount same as that
of the sharp teeth (11). Each opening (21) may be round or another
shape.
[0020] An insulated frame (30) is mounted between the metal body
(10) and the metal grounded body (20) to hold the metal body (10)
and the metal grounded member (20) at a specified interval.
[0021] When the metal body (10) is electrified, the sharp teeth
(11) are in a strong electrical field to form a corona phenomenon
and the circumferential air around the sharp teeth (11) is ionized.
The ions with an electric charge same as that on the sharp teeth
(11) will be rejected by the sharp teeth (11), and all moves toward
the metal grounded member (20). Consequently, an electric wind is
formed, which is also called an ionic wind. The ionic wind is
strong enough to bring the air from the metal body (10) to the
metal grounded member (20).
[0022] In order to enhance the heat dissipation effect, multiple
cooling fins (40) are provided behind the metal grounded member
(20), which contacts with the heat source. The ionic wind will blow
the heat away from the cooling fins (40), according to the air
convection.
[0023] When the metal body (10) is electrified with positive
voltage, the ionic wind is positive, and reversely, the ionic wind
is negative.
[0024] With reference to FIG. 2, a second embodiment in accordance
with the present invention has a metal body (10a) that is a piece
connected with the voltage source. Multiple sharp teeth (11a) are
formed on one side of the metal body (10a), and the metal body
(10a) contacts with a heat source. A metal grounded member (20a) is
mounted separately from the metal body (10a), corresponds to the
sharp teeth (11a), and has multiple openings (21a) having an amount
same as that of the sharp teeth (11a), and the opening (21a) is
round or other shape.
[0025] When the metal body (10a) is electrified, the sharp teeth
(11a) are in a strong electrical field to generate a corona
phenomenon, and the circumferential air around the sharp teeth
(11a) is ionized. The ions with an electric charge same as that on
the sharp teeth (11a) will be rejected by the sharp teeth (11a),
and all moves to the metal grounded member (20a), and an electric
wind is formed, which is also called an ionic wind. The ionic wind
is strong enough to bring the air from the metal body (10a) to the
metal grounded member (20a), according to the air convection.
[0026] When the metal body (10a) is electrified with positive
voltage, the ionic wind is positive, and reversely, the ionic wind
is negative.
[0027] With reference to FIG. 3, a third embodiment in accordance
with the present invention has a metal body (10b) that is a
vertical piece connected with the voltage source, multiple sharp
teeth (11b) are formed on one side of the metal body (10b), and the
metal body (10b) contacts with a heat source.
[0028] A metal grounded member (20b) is provided separately from
the metal body (10b), corresponds to the sharp teeth (11b), and has
multiple openings (21b) having an amount same as that of the sharp
teeth (11b).
[0029] When the metal body (10b) is electrified, the sharp teeth
(11b) are in a strong electrical field to form a corona phenomenon,
and the circumferential air around the sharp teeth (11b) is
ionized. The ions with an electric charge same as that on the sharp
teeth (11b) will be rejected by the sharp teeth (11b), and moves to
the metal grounded member (20b), and an electric wind is formed,
which is also called an ionic wind. The ionic wind is strong enough
to bring the air from the metal body (10b) to the metal grounded
member (20b), whereby the heat of the metal body (10b) is
efficiently dissipated, according to the air convection.
[0030] When the metal body (10b) is electrified with positive
voltage, the ionic wind is positive, and reversely, the ionic wind
is negative.
[0031] With reference to FIG. 4, a fourth embodiment of this
invention has a metal body (10c) connected with the voltage source,
multiple sharp teeth (11c) are formed thereon.
[0032] A metal grounded member (20c) comprises multiple vertical
cooling fins and contacts with the heat source, and is provided
separately from the metal body (10c). The number of the cooling
fins is the same as the number of sharp teeth (11c).
[0033] When the metal body (10c) is electrified, the sharp teeth
(11c) are in a strong electrical field to generate a corona
phenomenon, and the air around the sharp teeth (11c) is ionized.
The ions having the same charge with the sharp teeth (11c) will be
rejected by the sharp teeth (11c), and moves to the metal grounded
member (20c), and an electric wind is formed, which is also called
an ionic wind. The ionic wind is strong enough to bring the air
from the metal body (10c) to the metal grounded member (20c),
whereby the heat of the metal grounded member (20c) is dissipated,
according to the heat convection principle.
[0034] When the metal body (10c) is electrified with positive
voltage, the ionic wind is positive, and reversely, the ionic wind
is negative.
[0035] FIG. 5 shows a fifth embodiment of this invention, which is
similar to the first embodiment, only the metal grounded member
(20d) is a reticular piece, as shown in the third embodiment.
[0036] When the metal body (10d) is electrified, the sharp teeth
(11d) are in a strong electrical field to cause a corona
phenomenon, and the air around the sharp teeth (11d) is ionized.
The ions having the same charge with the sharp teeth (11d) will be
rejected by the sharp teeth (11d), and moves to the metal grounded
member (20d), and an electric wind is formed, which is also called
an ionic wind. The ionic wind is strong enough to bring the air
from the metal body (10d) to the metal grounded member (20d),
whereby the heat of the cooling fins (40) is efficiently
dissipated, according to the heat convection principle.
[0037] When the metal body (10d) is electrified with positive
voltage, the ionic wind is positive, and reversely, the ionic wind
is negative.
[0038] With reference to FIG. 6, a sixth embodiment shows the heat
sink device of this invention applied on an LED light (50). The
metal body (10e), which also comprises cooling fins and contacts
with the heat source of the LED light (50). When the metal body
(10e) is electrified, the sharp teeth (11e) are in a strong
electrical field, and generate a corona phenomenon, and the air
around the sharp teeth (11e) is ionized. The ions having the same
charge with the sharp teeth (11e) will be rejected by the sharp
teeth (11e), and moves to the metal grounded member (20e), and an
electric wind is formed. The ionic wind is strong enough to bring
the air from the metal body (10e) to the metal grounded member
(20e) according to the heat convection principle, so the heat
generated by the LED light (50) is dissipated.
[0039] It is to be understood, however, that even though numerous
characteristics and advantages of the present invention have been
set forth in the foregoing description, together with details of
the structure and function of the invention, the disclosure is
illustrative only. Changes may be made in the details, especially
in matters of shape, size, and arrangement of parts within the
principles of the invention to the full extent indicated by the
broad general meaning of the terms in which the appended claims are
expressed.
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