SOLAR AIR CONDITIONING DEVICE
A solar air conditioning device (100) includes a flat casing (10) and a solar collector (20). The casing includes a frame (12) having two side plates (14a, 14b) and inlet and outlet end plates (16a, 16b), a base plate (11) hermetically assembled to a bottom end of the frame. Inlet and outlet partition plates (15a, 15b) arranged in the casing divide an inner space of the casing into an inlet region (31), an outlet region (41), and a heat-collecting region (211). The solar collector includes a heat-absorbing set (22) and a transparent panel (13) hermetically assembled to a top end of the frame. The heat-absorbing set is arranged in the heat-collecting region and divides the heat-collecting region into an upper heat-storage cavity (24) and a lower heat-absorbing cavity (25). The inlet and outlet regions communicate with opposite ends of the heat-absorbing cavity of the heat-collecting region, respectively.
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This application is related to co-pending U.S. patent application Ser. No. 11/776,906 filed on Jul. 12, 2007 and entitled “SOLAR AIR CONDITIONING DEVICE”, co-pending U.S. patent application Ser. No. 11/959,431 filed on Dec. 18, 2007 and entitled “SOLAR AIR CONDITIONING DEVICE”, and co-pending U.S. patent application Ser. No. 11/964,561 filed on Dec. 26, 2007 and entitled “SOLAR AIR CONDITIONING DEVICE”. The co-pending U.S. patent applications are assigned to the same assignee as the instant application. The disclosures of the above-identified applications are incorporated herein by reference.
BACKGROUND1. Technical Field
Embodiments of the present invention generally relate to air conditioning devices, and particularly to an air conditioning device using solar energy to heat air.
2. Description of Related Art
With increasing CO2 emissions, the risk of global climate becoming abnormal and ecological destruction may increase. As a result, industrialized countries have again become aware of the urgency to reduce their dependence on fossil fuels after the energy crisis in the 70's. Therefore, it has become important to develop new environmental friendly energy resources, and to replace devices using non-renewable energy resources, such as air-conditioners, with devices using renewable energy. The conventional air conditioning devices not only need more energy, but also require refrigerant which can be harmful to the environment. Consequently, these countries have given positive commitments to use solar energy more effectively. Though people still have reservations about whether solar energy will be able to replace other energy resources in the near future, one thing that is almost certain is that solar energy will be playing a very important role in a number of fields, especially air ventilation and heating in structures such as buildings and vehicles.
As far as an air conditioning device using solar energy for heating and air ventilation is concerned, solar collectors are a key part in such a device, and it has to be mounted at an outside location where sufficient sunlight can be collected, such as on a roof or wall. In the past, a lot of effort has been made to develop solar collectors with different functions and styles. Many of them have been disclosed in patent literature. The most typical example is fixing a glass panel or transparent panel onto a fixed outer frame of a heat-insulated chamber and passing fluid through black heat-absorbing plates or pipes installed inside the chamber, so as to absorb solar energy. Examples include the solar hot water supply system disclosed in U.S. Pat. No. 4,418,685, the air ventilation facility disclosed in WO 9,625,632, the roof-style air ventilation facility disclosed in U.S. patent application Pub. No. 2002/0032000A1, and the roof-style air preheater disclosed in U.S. Pat. No. 4,934,338. However, the solar collectors used presently still have some drawbacks. Therefore, there is much room for improvements in applying and promoting the usage of solar energy to save energy and facilitate air conditioning. The aforementioned drawbacks include:
- (1) The related solar collector is too heavy. Its long-term use may cause an overly heavy load on the bearing structure.
- (2) Solar-thermo conversion efficiency may be limited.
- (3) The structure of the related solar collector is complicated, which makes its installation and maintenance difficult and expensive, and thus prolongs the period for recovering the investment.
- (4) The related solar heating device has poor compatibility and flexibility to match different bearing structures. Very often, it has to be custom-made.
- (5) The contour of the solar collector is obtrusive and often impairs the aesthete and harmony of the overall appearance of the bearing structure.
- (6) The packaging needed for the collector takes up much space and increases the cost of storage, display, and marketing.
- (7) The integral assembly of the whole-unit product is bulky, making it difficult to use in large-area application and increases installation cost.
- (8) Glass or transparent panels are glazed onto the outer frame of a heat-insulated chamber. Different thermal expansion coefficients of materials may cause thermal stress problems.
- (9) The related design is so complicated as to be difficult for an untrained user to install.
- (10) Some of the related designs can only be applicable to the structures which are under construction and designed to allow its installation. For most existing structures, the designs are unsuitable.
- (11) When air passes over a glazed panel, heat is dissipated unless double-glazing is used, but it is expensive and troublesome.
- (12) Hot water supply systems or liquid systems operated by solar heating experience problems due to freezing and leakage of the working liquid.
Related solar air conditioning devices include that disclosed in U.S. Pat. No. 6,880,553. Heat-absorbing units of the solar air conditioning device of U.S. Pat. No. 6,880,553 are connected in a fixed way. However, it is difficult to extend the area of the solar air conditioning device in a convenient way so that the solar air conditioning device can be used in different applications.
It is therefore desirable to provide a solar air conditioning device that can be flexibly extended and used in different applications.
SUMMARYThe present invention relates to a solar air conditioning device. According to an exemplary embodiment of the present invention, the solar air conditioning device includes a flat casing and a solar collector. The casing includes a frame and a base plate hermetically assembled to a bottom end of the frame. The frame includes two elongate side plates disposed at two opposite sides of the casing, and elongate inlet and outlet end plates disposed two opposite ends of the casing. Elongate inlet and outlet partition plates each having a plurality of air passages are arranged in the casing and divide an inner space of the casing into an inlet region, an outlet region, and a heat-collecting region between the inlet region and outlet region. The solar collector includes a heat-absorbing set and a transparent panel. The heat-absorbing set is arranged in the heat-absorbing region of the casing and divides the heat-absorbing region into an upper heat-storage cavity and a lower heat-absorbing cavity. The transparent panel is hermetically assembled to a top end of the frame and covers the inlet region, the heat-absorbing region and the outlet region. The upper heat-storage cavity is formed between the transparent panel and the heat-absorbing set. The lower heat-absorbing cavity is formed between the heat-absorbing set and the base plate. The inlet and outlet regions communicate with opposite ends of the heat-absorbing cavity of the heat-absorbing region, respectively, via the air passages of the inlet and outlet partition plates, whereby air can flow from the inlet region to the outlet region via the heat-absorbing channel and vice versa.
Other advantages and novel features of the present invention will become more apparent from the following detailed description of embodiments when taken in conjunction with the accompanying drawings.
Reference will now be made to the drawing figures to describe the various embodiments in detail.
Referring to
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The solar collector 20 includes a heat-absorbing set 22 for absorbing solar energy to heat air flowing therethrough. The heat-absorbing set 22 includes a plurality of modularized heat-absorbing units 23 which are clasped together. Each heat-absorbing unit 23 is made of good thermal conductivity materials with black surface. The heat-absorbing units 23 are clasped together along a latitudinal direction.
Referring also to
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In order to connect the heat-absorbing units 23 together, first and second clasping structures 233a, 233b are respectively formed at right and left sides of the heat-absorbing plate 232. The heat-absorbing units 23 are assembled together via engagement between the first and second clasping structures 233a, 233b. The first and second clasping structures 233a, 233b have configurations which complement with each other. The first clasping structure 233a is a mortise, whilst the second clasping structure 233b is a tenon for being fitted in a corresponding mortise. The first clasping structure 233a of a left heat-absorbing unit 23 is engaged with the second clasping structure 233b of an adjacent right heat-absorbing unit 23, so that the adjacent left and right heat-absorbing units 23 are assembled together. The heat-absorbing unit 23 is made of thin plate and handy for being displayed, packaged, stored, transported and assembled.
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In the solar air conditioning device 100, the heat-absorbing unit 23 includes a plurality of modularized heat-absorbing units 23 which are clasped together. The heat-absorbing units 23 divide the heat-collecting region 211 into the upper heat-storage cavity 24 and the lower heat-absorbing cavity 25. Top portions of the partition plates 15a, 15b hermetically seal front and rear ends of the heat-storage cavity 24 and the air passages 151 of the partition plates 15a, 15b communicate with the heat-absorbing cavity 25 with the inlet region 31 of the inlet section 30 and outlet region 31 of the outlet section 30, which allows air to be heated mainly in the lower heat-absorbing channels 251. Therefore, since the solar air conditioning device 100 has only one transparent panel 13, most air goes through the lower heat-absorbing channels 251 and the solar air conditioning device 100 demonstrates excellent heat insulation as well improving heating efficiency.
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In summer, the solar air conditioning device can heat the stale indoor air guided from the air-exhausting pipe and expel the heated stale indoor air out of the housing using thermal buoyancy effect.
In winter, air can be heated in the solar collector of the solar air conditioning device and guided back to the house via a fan connected with the air-exhausting pipe.
The solar air conditioning device can be installed with a hot water supply system which can operate year-round. A plurality of heat-absorbing water pipes are arranged in the heat-storage cavity of the solar air conditioning device; then, heated water is transferred back to a water circulation circuit including a heat storage tank. Meanwhile, air is heated in the heat-absorbing channels of the solar air conditioning device.
One special feature of the solar air conditioning device is that although it only has one layer of transparent panel in its structure, because most air goes through the lower heat-absorbing cavities, the solar air conditioning device has the excellent thermal insulation effect of a double-glazed system and a very high heat-absorption efficiency.
The casing and the heat-absorbing set of the solar air conditioning device are designed according to a modular concept. Cost of the solar air conditioning device is greatly reduced because the components are made of thin boards and plates, and are suitable for mass-production. The solar air conditioning device is much simpler than related assemblies with a whole-unit design. The assembly not only saves expenses in packaging but also requires less room for display and storage to make channel marketing much easier. The solar air conditioning device is very easy to install and maintain. Moreover, users can install and assemble the system by themselves.
All in all, the solar air conditioning device is a passive environmental protection air conditioner which is driven by solar energy. There is no need to consume electric energy and no environmental destroy caused by refrigerant. The solar air conditioning device exhausts the stale indoor air out of the house. Therefore, the quality of the indoor air is improved and a comfortable feeling is obtained. Moreover, the modularized components benefit the solar air conditioning device for being displayed, packaged, stored, transported and assembled. Furthermore, the components of the solar air conditioning device are thin and are handy for DIY assembly, which fits for the environmental protection and DIY trends.
It is to be further understood that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, 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.
Claims
1. A solar air conditioning device comprising:
- a flat casing, comprising: a frame comprising two elongate side plates disposed at two opposite sides of the casing, and elongate inlet and outlet end plates disposed two opposite ends of the casing; a base plate hermetically assembled to a bottom end of the frame; and elongated inlet and outlet partition plates each having a plurality of air passages arranged therein, the inlet and outlet partition plates dividing an inner space of the casing into an inlet region, an outlet region, and a heat-collecting region between the inlet region and outlet region; and
- a solar collector, comprising: a heat-absorbing set arranged in the heat-absorbing region of the casing and dividing the heat-absorbing region into an upper heat-storage cavity and a lower heat-absorbing cavity, and a transparent panel hermetically assembled to a top end of the frame and covering the inlet region, the heat-absorbing region and the outlet region, the upper heat-storage cavity being formed between the transparent panel and the heat-absorbing set, the lower heat-absorbing cavity being formed between the heat-absorbing set and the base plate, wherein the inlet and outlet regions communicate with opposite ends of the heat-absorbing cavity of the heat-absorbing region, respectively, via the air passages of the inlet and outlet partition plates, whereby air can flow from the inlet region to the outlet region via the heat-absorbing cavity.
2. The solar air conditioning device of claim 1, wherein the inlet and outlet partition plates are located adjacent to the inlet and outlet end plates, respectively, the inlet region being formed between the inlet end plate and the inlet partition plate, the outlet region being formed between the outlet end plate and the outlet partition plate, the heat-collecting region being formed between the inlet and outlet partition plates.
3. The solar air conditioning device of claim 2, wherein the two side plates and the inlet and outlet end plates are clasped together.
4. The solar air conditioning device of claim 3, wherein each of the side plates comprises two first clasping structures respectively located at two opposite ends thereof and two second clasping structures located between the two first clasping structures, the inlet and outlet end plates each comprising two third clasping structures respectively located at two opposite ends thereof, the inlet and outlet partition plates each comprising two fourth clasping structures respectively located at two opposite ends thereof, the side plates and the end plates being assembled together via engagements between the first clasping structures and the fourth clasping structures, the side plates and the partition plates being assembled together via engagements between the second clasping structures and the third clasping structures.
5. The solar air conditioning device of claim 4, wherein the first and second clasping structures of the side plates are grooves extending through inner and outer surfaces thereof, the third clasping structures of the inlet and outlet end plates are grooves extending through front and rear surfaces thereof, and the fourth clasping structures of the inlet and outlet partition plates are grooves extending through front and rear surfaces thereof.
6. The solar air conditioning device of claim 4, wherein each of the side plates forms a protruding bar at a bottom end thereof, the base plate defining a plurality of receiving grooves adapted for receiving the bottom protruding bars of the side plates, bottom ends of the inlet and outlet end plates, and bottom ends of the inlet and outlet partition plates.
7. The solar air conditioning device of claim 3, wherein each of the side plates comprises two elongate first clasping grooves respectively located at two opposite ends thereof and two elongate receiving grooves located between the two first clasping grooves, the inlet and outlet end plates each comprising two elongate second clasping grooves respectively located at two opposite ends thereof, the side plates and the end plates being assembled together via engagements between the first clasping grooves and the second clasping grooves, two opposite ends of each of the partition plates being received in the receiving grooves of the side plates.
8. The solar air conditioning device of claim 7, wherein the first clasping grooves and the receiving grooves of the side plates are defined in inner surfaces thereof and extend through top and bottom ends thereof, the second clasping grooves of the end plates being defined in inner surfaces thereof and extend through top and bottom ends thereof.
9. The solar air conditioning device of claim 7, wherein each of the side plates forms a protruding bar at a bottom end thereof, the inlet and outlet end plates each forming a protruding bar at a bottom end thereof, the base plate being received in the bottom end of the frame and surround by the protruding bars of the side plates and the end plates.
10. The solar air conditioning device of claim 2, wherein the inlet and outlet partition plates, inlet and outlet end plates and first and second side plates each are made of having a U-shaped profile, the U-shaped profile comprising a vertical supporting body, a horizontal top flange and a horizontal bottom flange located at an outer side of the supporting body.
11. The solar air conditioning device of claim 10, wherein a rectangular bracket is formed on an inner side of the heat-absorbing section adapted for supporting edges of the heat-absorbing set.
12. The solar air conditioning device of claim 11, wherein the heat-absorbing set includes a plurality of modularized heat-absorbing units which are clasped together, a plurality of heat-storage channels being defined in the upper heat-storage cavity and a plurality of heat-absorbing channels being defined in the lower heat-absorbing cavity, the partition plates hermetically sealing front and rear ends of heat-storage channels, whilst the air passages of the partition plates communicating with the heat-absorbing channels.
13. The solar air conditioning device of claim 12, wherein the heat-absorbing unit has a cross-shaped configuration and comprises an elongate horizontal heat-absorbing plate and an elongate vertical brace plate integrally interconnecting a middle portion of the heat-absorbing plate, the heat-absorbing plate forming a mortise at an end thereof and a tenon at an opposing end thereof adapted for fitting a corresponding mortise of an adjacent heat-absorbing unit.
14. The solar air conditioning device of claim 2, wherein the heat-absorbing set comprises a planar heat-absorbing plate and a plurality of supporting shelves, the supporting shelves being disposed below and above the planar heat-absorbing plate adapted for supporting the planar heat-absorbing plate and the transparent panel.
15. The solar air conditioning device of claim 1, wherein the top end of the frame forms a supporting roof at an inner side thereof adapted for supporting the transparent panel.
Type: Application
Filed: Oct 8, 2008
Publication Date: Apr 30, 2009
Applicants: FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD. (Shenzhen City), FOXCONN TECHNOLOGY CO., LTD. (Tu-Cheng)
Inventors: TAY-JIAN LIU (Tu-Cheng), XIN-JIAN XIAO (Shenzhen City)
Application Number: 12/247,989