U.S. patent application number 13/555812 was filed with the patent office on 2013-06-06 for solar heating device.
This patent application is currently assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE. The applicant listed for this patent is YU TANG CHEN, JIAN SHIAN LIN, TUNG CHENG PAN, YAO CHI PENG, TUNG CHUAN WU, WEN HUA ZHANG. Invention is credited to YU TANG CHEN, JIAN SHIAN LIN, TUNG CHENG PAN, YAO CHI PENG, TUNG CHUAN WU, WEN HUA ZHANG.
Application Number | 20130139808 13/555812 |
Document ID | / |
Family ID | 48494368 |
Filed Date | 2013-06-06 |
United States Patent
Application |
20130139808 |
Kind Code |
A1 |
LIN; JIAN SHIAN ; et
al. |
June 6, 2013 |
SOLAR HEATING DEVICE
Abstract
The disclosure relates to a solar heating device comprising at
least one incidence collector and a thermal container. The thermal
container includes at least one light absorbing recess, wherein at
least one of the incidence collectors focuses solar beams on a
focal point, which is located inside the light absorbing recess.
The inner surface of the light absorbing recess converts the energy
of the solar beams into radiant heating.
Inventors: |
LIN; JIAN SHIAN; (Yilan
County, TW) ; PENG; YAO CHI; (Hsinchu City, TW)
; WU; TUNG CHUAN; (Hsinchu City, TW) ; PAN; TUNG
CHENG; (Taichung City, TW) ; CHEN; YU TANG;
(Taipei City, TW) ; ZHANG; WEN HUA; (Hsinchu
County, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LIN; JIAN SHIAN
PENG; YAO CHI
WU; TUNG CHUAN
PAN; TUNG CHENG
CHEN; YU TANG
ZHANG; WEN HUA |
Yilan County
Hsinchu City
Hsinchu City
Taichung City
Taipei City
Hsinchu County |
|
TW
TW
TW
TW
TW
TW |
|
|
Assignee: |
INDUSTRIAL TECHNOLOGY RESEARCH
INSTITUTE
HSINCHU
TW
|
Family ID: |
48494368 |
Appl. No.: |
13/555812 |
Filed: |
July 23, 2012 |
Current U.S.
Class: |
126/681 ;
126/688; 126/698 |
Current CPC
Class: |
Y02E 10/40 20130101;
F24S 23/12 20180501; F24S 60/30 20180501; Y02B 40/18 20130101; F24S
20/30 20180501; F24S 20/20 20180501; F24S 2023/872 20180501 |
Class at
Publication: |
126/681 ;
126/698; 126/688 |
International
Class: |
F24J 2/02 20060101
F24J002/02; F24J 2/10 20060101 F24J002/10; F24J 2/08 20060101
F24J002/08 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 5, 2011 |
TW |
100144573 |
Claims
1. A solar heating device, comprising: at least one incidence
collector; and a thermal container, including at least one light
absorbing recess, wherein at least one of the incidence collectors
focuses solar beams on a focal point, and the light absorbing
recess converts the energy of the solar beams into radiant
heating.
2. The solar heating device according to claim 1, wherein the
incidence collector further includes a Fresnel lenslet array, and
the solar beams pass through the Fresnel lenslet array to focus on
the focal point located inside the light absorbing recess.
3. The solar heating device according to claim 1, wherein the
incidence collector includes a Fresnel mirror, reflecting solar
beams and focusing on the focal point, located inside the light
absorbing recess.
4. The solar heating device according to claim 1, wherein the
incidence collector includes an optical guide, directing solar
beams to the focal point located inside the light absorbing
recess.
5. The solar heating device according to claim 1, wherein the
optical guide includes a light guide plate and a collector prism,
the light guide plate includes a micro structural layer and a body,
the micro structural layer is disposed on the body, the micro
structural layer directs the solar beams to the body, and the
collector prism is disposed at a side of the body and focuses the
solar beams from the body.
6. The solar heating device according to claim 2, further
comprising a guiding light device, directing the solar beams of the
focal point to at least one light absorbing recess, wherein the
guiding light device is selected from a group consisting of
reflecting mirror, lenslet array, and optical fiber.
7. The solar heating device according to claim 3, further
comprising a guiding light device, directing the solar beams of the
focal point to at least one light absorbing recess, wherein the
guiding light device is selected from a group consisting of
reflecting mirror, lenslet array, and optical fiber.
8. The solar heating device according to claim 5, further
comprising a guiding light device, directing the solar beams of the
focal point to at least one light absorbing recess, wherein the
guiding light device is selected from a group consisting of
reflecting mirror, lenslet array, and optical fiber.
9. The solar heating device according to claim 5, further
comprising a guiding light device, including an optical fiber,
wherein an end of the optical fiber connects with the collector
prism, and the other end of the optical fiber directs the solar
beams to the focal point.
10. The solar heating device according to claim 1, wherein the
thermal container further includes an outer wall, an inner wall,
and a vacuum layer, the vacuum layer is disposed between the outer
wall and the inner wall, and the position of the light absorbing
recess in the thermal container does not include the vacuum layer
between the outer wall and the inner wall.
11. The solar heating device according to claim 10, wherein at
least one of the light absorbing recesses includes an incidence
opening, the focal point is located inside the light absorbing
recess, and the shape of the light absorbing recess is selected
from the group consisting of spherical shape, half spherical shape,
polygonal shape, symmetrical shape, cubic shape, rectangular shape,
conical shape, arc-like shape, and non-symmetrical shape.
12. The solar heating device according to claim 11, wherein the
shape of the incidence opening is selected from the group
consisting of circular shape, square shape, triangular shape,
polygonal shape, rectangular shape, arc-like shape, and curved
shape.
13. The solar heating device according to claim 11, wherein the
inner surface of the light absorbing recess is coated with a light
beam absorbing material, and the absorbing ratio of the light beam
absorbing material is greater than 30%.
14. The solar heating device according to claim 13, wherein the
light beam absorbing material forms a structural layer including a
plurality of micro holes.
15. The solar heating device according to claim 1, further
comprising a fixing device, maintaining the relative position
between the thermal container and at least one of the incidence
collectors.
16. The solar heating device according to claim 1, wherein the
light absorbing recess is located at the bottom or the lateral
outer wall of the thermal container.
17. The solar heating device according to claim 11, wherein the
diameter of the incidence opening is less than the maximal diameter
of the light absorbing recess to avoid light leakage from the
incidence opening.
18. The solar heating device according to claim 12, wherein the
diameter of the incidence opening is less than the maximal diameter
of the light absorbing recess to avoid light leakage from the
incidence opening.
19. The solar heating device according to claim 6, wherein the
shape of the reflecting mirror is selected from the group
consisting of plate shape and conical shape.
20. The solar heating device according to claim 7, wherein the
shape of the reflecting mirror is selected from the group
consisting of plate shape and conical shape.
Description
BACKGROUND
[0001] 1. Field
[0002] The disclosure relates to a heating device, and more
particularly, to a solar heating device.
[0003] 2. Background
[0004] Since global warming causes abnormal climate change in
seasons and the overdevelopment of industrial society causes
serious environmental impact, a lot of disasters occur. Thus, many
countries advocate utilizing sustainable energy and have signed
climate protection agreements. Thus, there is a need for a device
capable of utilizing solar energy for emergency situations (e.g.,
disasters) or outdoor activity.
[0005] A solar beam collection heater 21 in prior art as shown in
FIG. 1 comprises a supporting frame 44 and a grill 22. A light beam
collecting frame 51 of the heater 21 is disposed on the supporting
frame 44. A lens 5 is mounted in the frame 51 and disposed above
the heater 21 converges solar beams toward an object 23 on the
heater 21 such that the object 23 is heated by solar energy. The
object 23 may produce liquid material such as grease during the
heating process, which may flow into the container 14. However, the
solar beam collection heater 21 may not function well in heating
the liquid material, for example, the liquid in the container 14.
Furthermore, the heater 21 may be heavy and bulky, which is not
suitable for hand carry.
SUMMARY
[0006] The disclosure provides a solar heating device, which
comprises at least one incidence collector and a thermal container.
The thermal container includes at least one light absorbing recess.
At least one incidence collector focuses solar beams on a focal
point. The light absorbing recess converts the energy of the solar
beams into radiant heating (e.g., a black-body radiating source).
Preferably, the focal point is located inside at least one of the
light absorbing recesses.
[0007] The disclosure also provides a solar heating device,
comprising at least one incidence collector and a thermal container
including at least one light absorbing recess. At least one of the
incidence collectors focuses solar beams on a focal point and
includes an optical guide. The optical guide directs the solar
beams to the focal point and locates the focal point inside the
light absorbing recess so the light absorbing recess converts the
solar beams into radiant heating.
[0008] The foregoing has outlined rather broadly the features and
technical benefits of the disclosure in order that the detailed
description of the application that follows may be better
understood. Additional features of the disclosure will be described
hereinafter, and form the subject of the claims of the disclosure.
It should be appreciated by those skilled in the art that the
conception and specific embodiment disclosed may be readily
utilized as a basis for modifying or designing other structures or
processes for carrying out the same purposes of the disclosure. It
should also be realized by those skilled in the art that such
equivalent constructions do not depart from the spirit and scope of
the disclosure as set forth in the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] A more complete understanding of the disclosure may be
derived by referring to the detailed description and claims when
considered in connection with the Figures, where like reference
numbers refer to similar elements throughout the Figures, and:
[0010] FIG. 1 is a schematic view of a solar beam collection heater
in prior art;
[0011] FIG. 2 is a cross-sectional view of a solar heating device
in accordance with an embodiment of the disclosure;
[0012] FIG. 3 is a cross-sectional view of a solar heating device
in accordance with another embodiment of the disclosure;
[0013] FIG. 4 is a cross-sectional view of a solar heating device
in accordance with still another embodiment of the disclosure;
[0014] FIG. 5 is a cross-sectional view of a solar heating device
in accordance with yet another embodiment of the disclosure;
[0015] FIG. 6 is a cross-sectional view of a solar heating device
in accordance with yet still another embodiment of the disclosure;
and
[0016] FIG. 7 is a cross-sectional view of a solar heating device
in accordance with still another embodiment of the disclosure.
DETAILED DESCRIPTION
[0017] The disclosure is directed to a solar heating device. In
order to make the disclosure completely comprehensible, detailed
steps and structures are provided in the following description.
Obviously, implementation of the disclosure does not limit special
details known by persons skilled in the art. In addition, known
structures and steps are not described in detail, so as not to
limit the disclosure unnecessarily. Preferred embodiments of the
disclosure will be described below in detail. However, in addition
to the detailed description, the disclosure may also be widely
implemented in other embodiments. The scope of the disclosure is
not limited to the detailed description, and is defined by the
claims.
[0018] FIG. 2 is a cross-sectional view of a solar heating device
100 in accordance with an embodiment of the disclosure. Referring
to FIG. 2, the solar heating device 100 includes at least one
incidence collector 110 and a thermal container 120. In one
embodiment, the incidence collector 110 is a Fresnel mirror, which
reflects solar beams and focuses the solar beams on a focal point
130. Particularly, the detail of the Fresnel mirror is shown in the
enlarged view below FIG. 2. Since each of the reflection angles of
the Fresnel mirror is different, the incident solar beams with
different incident angles can be focused on the focal point 130. In
addition, the thermal container 120 includes at least one light
absorbing recess 140 at the bottom. Since the focal point 130 of
the Fresnel mirror is located inside at least one of the light
absorbing recesses 140, the light absorbing recess 140 will convert
energy of the solar beams into a black-body radiating source or a
radiant heating. Particularly, when solar beams emit into the light
absorbing recess 140, since the solar beams are reflected inside
the light absorbing recess 140 and the incidence opening 141 of the
light absorbing recess 140 is very small, the solar beams cannot
scatter away from the light absorbing recess 140. In addition,
since the solar beams are repeatedly reflected by the inner wall of
the light absorbing recess 140, the energy of the solar beams will
be converted into black-body radiating source for radiant heating.
The disclosure utilizes the black-body radiating source and the
thermal conduction capability of the light absorbing recess 140 to
conduct heat inside of the thermal container 120 so as to heat the
liquid 200 accommodated in the thermal container 120. Since the
solar heating device 100 can heat the liquid 200 (e.g., water) to
its boiling point, the solar heating device 100 can be, but is not
limited to being, applied for heating food. In the embodiment, the
number of light absorbing recesses 140 is one; however, in another
embodiment (not shown), the number of light absorbing recesses 140
can be plural in accordance with different designs.
[0019] The thermal container 120 further includes an outer wall
121, an inner wall 122 and a vacuum layer 123. The vacuum layer 123
is disposed between the outer wall 121 and the inner wall 122.
Since the position of the light absorbing recess 140 does not
include the vacuum layer 123 between the outer wall 121 and the
inner wall 122, the position of the light absorbing recess 140 in
the thermal container 120 is formed by a single recess wall instead
of the outer wall 121 and the inner wall 122. By such design, the
black-body radiating source of the light absorbing recess 140
directly conducts heat into the inside of the thermal container 120
to heat liquid 200. In addition, since the thickness of the outer
wall 121 and the inner wall 122 is inversely proportional to the
value of thermal conductivity, if the wall thickness of the light
absorbing recess 140 is less than that of the outer wall 121 and
the inner wall 122 of the thermal container 120, it is more
efficient to conduct the heat into the thermal container 120 from
the radiating source. Furthermore, in the embodiment, the thermal
container 120 further includes, but not limited to, a cover 300
which seals the opening (not shown) of the thermal container 120 so
as to rapidly heat the liquid 200.
[0020] As shown in FIG. 2, the light absorbing recess 140 includes
an incidence opening 141. The light absorbing recess 140 is
surrounded by side walls 142. The diameter of the incidence opening
141 is less than the maximal diameter of the light absorbing recess
140 to avoid light leakage from the incidence opening 141. In
addition, the above-mentioned focal point 130 is located inside the
light absorbing recess 140 defining the incidence opening 141.
Furthermore, the side walls 142 defining the light absorbing recess
140 are coated with a light beam absorbing material 400 (e.g.
carbon-related compound). The absorbing ratio of the light beam
absorbing material 400 is higher than 30%. The light beam absorbing
material 400 forms a structural layer (not shown) including a
plurality of micro holes (not shown). Particularly, since the light
absorbing recess 140 includes a plurality of micro holes formed by
the light beam absorbing material 400, when the solar beams are
focused on the inside of the light absorbing recess 140, the energy
of the solar beams will be absorbed by the micro hole of the light
absorbing recess 140, instead of scattering away from the light
absorbing recess 140. Moreover, since the solar beams are
repeatedly reflected by the inner wall of the light absorbing
recess 140, the energy of the solar beams can be absorbed by the
micro holes and then converted into the black-body radiating
source. In addition, the shape of the light absorbing recess 140 is
selected from the group consisting of spherical shape, half
spherical shape, polygonal shape, symmetrical shape, cubic shape,
rectangular shape, conic shape, arc-like shape, and non-symmetrical
shape so as to absorb the solar beams in the light absorbing recess
140 to convert the optical energy into the thermal energy.
[0021] In the embodiment shown in FIG. 2, the solar heating device
100 further includes a fixing device 150 configured to maintain the
relative position between the thermal container 120 and at least
one of the incidence collectors 110. Since the fiving device 150
can prevent the focal point 130 from being located outside of the
light absorbing recess 140 due to the shift of the relative
position between the thermal container 120 and the incidence
collectors 110, the black-body radiating source generated by the
energy of the focal point 130 can be ensured. Furthermore, the
shape of the incidence opening 141 is selected from the group
consisting of circular shape, square shape, triangular shape,
polygonal shape, rectangular shape, arc-like shape, and curved
shape. Moreover, the shape of the incidence opening 141 allows the
diameter of the incidence opening 141 to be less than the maximal
diameter of the light absorbing recess 140 so as to avoid light
leakage from the incidence opening 141.
[0022] FIG. 3 is a cross-sectional view of a solar heating device
100a in accordance with another embodiment of the disclosure. As
shown in FIG. 3, an incidence collector 110a of the solar heating
device 100a includes a Fresnel lenslet array. Solar beams passing
through the Fresnel lenslet array are focused on the focal point
130. In addition, the thermal container 120 includes a first light
absorbing recess 140a. Since the focal point 130 focused by the
Fresnel lenslet array is located inside a second light absorbing
recess 140b, the second light absorbing recess 140b will absorb the
solar beams and convert them to the black-body radiating source.
Particularly, when solar beams emit into the second light absorbing
recess 140b, since the solar beams are repeatedly reflected by the
inner wall of the second light absorbing recess 140b and the
diameter of the incidence opening (equal to the incidence opening
141 of the first light absorbing recess 140a) of the second light
absorbing recess 140b is too small to allow the solar beams to
scatter away, the energy of the solar beams can be absorbed by the
inner wall of the second light absorbing recess 140b and then
converted into the black-body radiating source. In the embodiment,
the lateral side of the thermal container 120 includes the
above-mentioned first light absorbing recess 140a. Other lenslet
arrays (not shown) can focus the solar beams inside the first light
absorbing recess 140a so as to generate another black-body
radiating source for rapidly heating the liquid in the thermal
container 120. In the alternative embodiment, the solar heating
device 100a further includes the above-mentioned incidence
collector 110b for focusing solar beams inside the first light
absorbing recess 140a. In addition, the light beam absorbing
material 400 as shown in FIG. 2 can be coated inside the first or
second light absorbing recesses 140a or 140b. Moreover, the fixing
device 150 shown in FIG. 2 can be applied for the embodiment shown
in FIG. 3 to maintain the relative position among the thermal
container 120 and the incidence collector 110a.
[0023] FIG. 4 is a cross-sectional view of a solar heating device
100b in accordance with still another embodiment of the disclosure.
In the embodiment shown in FIG. 4, an incidence collector 110b of
the solar heating device 100b includes an optical guide 111,
directing solar beams toward the focal point 130. The optical guide
111 includes a light guide plate 112 and a collector prism 113. The
light guide plate 112 includes a micro structural layer 1121 and a
body 1122. The micro structural layer 1121 is disposed on the body
1122. The micro structural layer 1121 utilizes its own micro
structure to direct most of the solar beams into the body 1122. The
solar beams are total reflected inside the body 1122. The collector
prism 113 is disposed at a side of the body 1122 and focuses the
solar beams from the body 1122. In the embodiment shown in FIG. 4,
the solar heating device 100b further includes a guiding light
device 160. The guiding light device 160 includes an optical fiber
161. One end 162 of the optical fiber 161 connects with the
collector prism 113, while the other end 163 of the optical fiber
161 directs the solar beams to the focal point 130. In an
alternative embodiment, the above-mentioned incidence collectors
110 or 110a can be utilized to focus solar beams inside the light
absorbing recess 140. In addition, the light beam absorbing
material 400 as shown in FIG. 2 can be coated inside the light
absorbing recesses 140. Furthermore, the fixing device 150 shown in
FIG. 2 can be applied for the embodiment shown in FIG. 4 to
maintain the relative position among the thermal container 120 and
the incidence collector 110b.
[0024] FIG. 5 is a cross-sectional view of a solar heating device
100c in accordance with yet another embodiment of the disclosure.
In the embodiment shown in FIG. 5, the solar heating device 100c
further includes a guiding light device 170 (e.g., a prism), which
directs the solar beams at the focal point 130 into at least one of
the light absorbing recesses 140. Since the guiding light device
170 of the disclosure can direct the solar beams at the focal point
130 into the light absorbing recess 140, the focal point 130
focused by the incidence collector 110a is not necessarily located
inside the light absorbing recess 140. In other words, the guiding
light device 170 can direct the solar beams of the focal point 130
located outside of the light absorbing recess 140 into the light
absorbing recess 140 so as to convert the energy of the solar beams
into the black-body radiating source. In the embodiment, the number
of guiding light devices 170 is not limited to only one and can be
plural in accordance with different designs. In addition, the
fixing device 150 shown in FIG. 2 can be applied for the embodiment
shown in FIG. 5 to maintain the relative position among the thermal
container 120, at least one incidence collector 110a, and the
guiding light device 170. In the alternative embodiment, the solar
heating device 100c further includes the above-mentioned incidence
collectors 110, 110a or 110b for focusing solar beams inside the
lateral light absorbing recesses 140. In addition, the light beam
absorbing material 400 as shown in FIG. 2 can be coated inside the
light absorbing recesses 140. In the embodiment shown in FIG. 5,
the solar heating device 100c may further include the
above-mentioned guiding light device 160 to direct solar beams from
the incidence collector 110b. In alternative embodiment, the guide
light device 160 can be replaced with the lenslet array.
[0025] In the embodiments shown in FIGS. 6 and 7, the solar heating
device 100d further includes a guiding light device 180 (e.g., the
reflecting mirror). The reflecting mirror can be plate-shaped as
shown in FIG. 6 or conically-shaped guiding light device 190 as
shown in FIG. 7. The reflecting mirror reflects the solar beams of
the focal point 130 into at least one of the light absorbing
recesses 140. Since the guiding light device 180 of the embodiment
can direct the solar beams of the focal point 130 into the light
absorbing recess 140, the focal point 130 focused by the incidence
collector 110a is not necessarily located inside the light
absorbing recess 140. In other words, the guiding light device 180
or 190 can reflect the solar beams of the focal point 130 located
outside of the light absorbing recess 140 into the light absorbing
recess 140 so as to convert the energy of the solar beams into the
black-body radiating source. In the embodiment, the number of
guiding light devices 180 or 190 is not limited to only one and can
be plural in accordance with different designs. In addition, the
fixing device 150 shown in FIG. 2 can be applied to the embodiment
shown in FIGS. 6 and 7 to maintain the relative position among the
thermal container 120, at least one incidence collector 110a, and
the guiding light device 180. In the alternative embodiment, the
solar heating device 100d or 100e further includes the
above-mentioned incidence collectors 110, or 110b for focusing
solar beams inside the lateral light absorbing recesses 140. In
addition, the light beam absorbing material 400 as shown in FIG. 2
can be coated inside the light absorbing recesses 140. In the
embodiments shown in FIGS. 6 and 7, the solar heating device 100d
or 100e may further include the above-mentioned guiding light
device 160 to direct solar beams from the incidence collector 110b
or the above-mentioned guiding light device 170 to direct solar
beams from the focal point 130. In alternative embodiment, the
guide light device 180 or 190 can be replaced with the lenslet
array.
[0026] Although the disclosure and its advantages have been
described in detail, it should be understood that various changes,
substitutions and alterations can be made herein without departing
from the spirit and scope of the disclosure as defined by the
appended claims. For example, many of the processes discussed above
can be implemented in different methodologies and replaced by other
processes, or a combination thereof.
[0027] Moreover, the scope of the disclosure is not intended to be
limited to the particular embodiments of the process, machine,
manufacture, and composition of matter, means, methods and steps
described in the specification. As one of ordinary skill in the art
will readily appreciate from the disclosure of the present
disclosure, processes, machines, manufacture, compositions of
matter, means, methods, or steps, presently existing or later to be
developed, that perform substantially the same function or achieve
substantially the same result as the corresponding embodiments
described herein may be utilized according to the present
disclosure. Accordingly, the appended claims are intended to
include within their scope such processes, machines, manufacture,
compositions of matter, means, methods, or steps.
* * * * *