Solar air heat collector
By designing the heat collection box and light-transmitting plate structure of the solar air collector, and utilizing the black heat-absorbing layer and S-shaped flow channel, the problem of large temperature fluctuations in solar heat collection equipment was solved, achieving stability of the outlet air temperature and improvement of heat exchange efficiency.
Patent Information
- Application Number
- CN202520384255.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing solar thermal collectors are subject to significant temperature fluctuations due to sunlight exposure, resulting in unstable outlet air temperatures and making it difficult to effectively utilize solar energy for heating in remote, resource-scarce areas.
Design a solar air collector that uses a collector box and a light-transmitting plate structure. The surface of the collector box is coated with a black heat-absorbing layer and has an S-shaped flow channel inside. The light-transmitting plate is sealed at the opening. The S-shaped flow channel slows down the air flow speed. The black heat-absorbing layer converts light energy into heat energy and heats the air through thermal radiation and conduction. Cold air is deposited at the bottom and hot air is discharged from the side air outlet.
By effectively utilizing solar energy, fluctuations in outlet air temperature are reduced, ensuring the stability and uniformity of outlet air temperature and improving heat exchange efficiency.
Smart Images
Figure CN223925133U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of solar energy, especially relates to a solar air collector. BACKGROUND
[0002] In daily life, the heating equipment generates heat in the way of electricity, fuel, solar energy and so on. Among them, electricity and fuel belong to secondary energy, and in the process of converting primary energy into secondary energy, waste gas, waste water, waste residue, noise and other things that can easily pollute the environment are produced, and many devices are needed to assist in the process of energy conversion. Many remote and material scarce places have heating equipment but lack electricity and fuel.
[0003] As a primary energy and a kind of green and environmental protection energy, solar energy has the advantages of convenient intake and abundant energy, but the temperature of the device using solar energy fluctuates greatly under the influence of light, and the outlet air temperature fluctuates greatly.
[0004] Therefore, a solar air collector is needed to solve the above problems. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a kind of solar air collector, can effectively utilize solar energy, and reduce the floating of outlet air temperature.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] Solar air collector, comprising:
[0008] Heat collection box, the heat collection box has hollow heating cavity, the heating cavity surface is coated with black heat-absorbing layer, the heating cavity is provided with S-shaped flow channel, the S-shaped flow channel gradually increases from the bottom to the cross-sectional area of the opening direction;The heat collection box is opened with air inlet and air outlet, the air inlet is located at the bottom of the heat collection box, and is communicated with one end of the S-shaped flow channel, the air outlet is located at the side of the heat collection box, and is communicated with the other end of the S-shaped flow channel;
[0009] Light-transmitting plate, the light-transmitting plate seal cover is arranged at the opening of the heating cavity.
[0010] In some embodiments, the bottom of the heat collection box is wavy.
[0011] In some embodiments, a plurality of first semicircular convexes are arranged at the wave crest of the bottom of the heat collection box, a plurality of second semicircular convexes are arranged at the wave trough of the bottom of the heat collection box, and the plurality of first semicircular convexes and the plurality of second semicircular convexes are staggered.
[0012] In some embodiments, the opening of the heat collecting box is provided with a mounting ring groove, and a sealing element is arranged in the mounting ring groove.
[0013] In some embodiments, a fixing assembly is further included, which is arranged along the circumference of the heat collecting box and connected with the heat collecting box and the light-transmitting plate.
[0014] In some embodiments, the fixing assembly comprises a frame and a corner guard, the frame is buckled on the heat collecting box and the light-transmitting plate, and the corner guard is arranged at the corner of the frame.
[0015] In some embodiments, a filter screen is arranged on the heat collecting box and located at the air inlet.
[0016] In some embodiments, the S-shaped flow channel gradually narrows in the direction from the air inlet to the air outlet.
[0017] In some embodiments, at least one S-shaped flow partition plate is arranged in the heating cavity of the heat collecting box, and the thickness of the root part connected with the bottom of the heat collecting box is greater than the thickness of the top part of the S-shaped flow partition plate.
[0018] In some embodiments, a straight flow partition plate is further included, one end of the straight flow partition plate is connected with the side of the heat collecting box, and the straight flow partition plate is located at the turning part of the S-shaped flow partition plate.
[0019] The utility model discloses the beneficial effects of:
[0020] The utility model provides a kind of solar air collector, heat collection box has hollow heating cavity, heating cavity surface is coated with black heat-absorbing layer, heating cavity is provided with S-shaped flow channel, S-shaped flow channel is gradually increased from bottom to the cross-sectional area of opening direction, and air inlet and air outlet are provided at the both ends of S-shaped flow channel.Light-transmitting plate sealing cover is arranged at the opening of heating cavity.When using, the solar air collector is placed in the place with sunlight, sunlight directly irradiates light-transmitting plate surface and enters heat collection box, because the surface of entire heat collection box is coated with black heat-absorbing layer, black heat-absorbing layer has strong light absorption capacity, can more effectively convert light energy into heat energy, and the temperature inside heat collection box is increased by the way of heat radiation and heat conduction, when air enters heat collection box inside from air inlet, according to the principle of heat transfer, the heat inside will be transferred to air, and the heated air is sent to functional end from air outlet of heat collection box.By setting S-shaped flow channel, the flow speed of air can be delayed, so that heat exchange with solar energy can be fully ensured, and the temperature at air outlet is guaranteed.Because the density of cold air is greater than that of hot air, cold air will deposit to the bottom of heat collection box inside, so that the flow rate of hot air is faster than that of cold air, forming flow rate difference, by gradually increasing the cross-sectional area of S-shaped flow channel from bottom to opening direction, the top space of S-shaped flow channel is greater than bottom space, and the entire heating area is also increased, so that the area of hot air is greater than that of cold air, and cold air can be concentrated and pressed to the bottom of S-shaped flow channel, hot air with higher temperature is discharged through air outlet arranged in the side of heat collection box, and the floating of air outlet temperature can be reduced. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the content of the embodiments of the utility model and these drawings without paying creative labor for those skilled in the art.
[0022] Figure 1 It is the exploded schematic view of the solar air collector of the utility model;
[0023] Figure 2 It is the assembly schematic view of the solar air collector of the utility model;
[0024] Figure 3 It is the schematic view of the back of the solar air collector of the utility model;
[0025] Figure 4 It is the front view of the solar air collector of the utility model;
[0026] Figure 5 It isFigure 4 a local enlarged view at A in the middle;
[0027] Figure 6 is a top view of the heat collecting box in the solar air collector.
[0028] in the figure:
[0029] 1, heat collecting box; 11, air inlet; 111, filter screen; 12, air outlet; 13, mounting ring groove; 14, first semicircular convex bundle; 15, second semicircular convex bundle; 2, light transmission plate; 21, sealing element; 3, fixing assembly; 31, frame; 32, angle guard; 4, S-shaped flow separation plate; 5, straight flow separation plate. DETAILED DESCRIPTION
[0030] Before any embodiments of this application are explained in detail, it is to be understood that this application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.
[0031] In this application, the terms "including", "containing", "having" or any other similar words are intended to encompass non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.
[0032] In this application, the terms "connection", "combination", "coupling", "mounting" can be direct connection, combination, coupling or mounting, or indirect connection, combination, coupling or mounting. Among them, for example, direct connection refers to the connection of two parts or components without the need for an intermediate part, and indirect connection refers to the connection of two parts or components with at least one intermediate part. The two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.
[0033] In this application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.
[0034] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as a limitation on the embodiments of the present application. In addition, it is also necessary to understand in the context that when referring to an element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, left below, right below, front below and back below and the like.
[0035] In order to effectively utilize solar energy and reduce the floating of the outlet air temperature, as shown in the utility model provides a kind of solar air collector. Figures 1-6 Solar air collector includes heat collection box 1 and light-transmitting plate 2.
[0036] Among them, heat collection box 1 has hollow heating cavity, and the surface of heating cavity is coated with black heat-absorbing layer. The heating cavity is provided with S-shaped flow channel, and the cross-sectional area of S-shaped flow channel gradually increases from the bottom to the opening direction. Heat collection box 1 is provided with air inlet 11 and air outlet 12, air inlet 11 is located at the bottom of heat collection box 1, and air inlet 11 is communicated with one end of S-shaped flow channel. The air outlet 12 is located at the side of the heat collection box 1, and the air outlet 12 is communicated with the other end of the S-shaped flow channel. The light-transmitting plate 2 is sealed and covered on the opening of the heating cavity.
[0037] In use, the present solar air collector is placed in a place with sunlight, and the sunlight directly irradiates the surface of the light-transmitting plate 2 and enters the heat collection box 1. Since the surface of the entire heat collection box 1 is coated with a black heat-absorbing layer, the black heat-absorbing layer has strong light absorption capacity, which can more effectively convert light energy into heat energy, and increase the temperature inside the heat collection box 1 through heat radiation and heat conduction. When the air enters the heat collection box 1 from the air inlet 11, the heat inside will be transferred to the air according to the principle of heat transfer, and the heated air flows out of the air outlet 12 of the heat collection box 1 and is delivered to the functional end. By setting S-shaped flow channel, the flow speed of air can be slowed down, so that sufficient heat exchange with solar energy can be realized, and the temperature at the air outlet 12 is ensured. Since the density of cold air is greater than that of hot air, the cold air will deposit to the bottom of the heat collection box 1, so that the flow rate of hot air is faster than that of cold air, forming a flow rate difference. By designing the S-shaped flow channel to gradually increase the cross-sectional area from the bottom to the opening direction, the top space of the S-shaped flow channel is greater than the bottom space, and the entire heating area is also increased, so that the area of hot air is greater than that of cold air, and the cold air can be concentrated and pressed to the bottom of the S-shaped flow channel. The hot air with higher temperature is discharged through the air outlet 12 arranged at the side of the heat collection box 1, which can reduce the floating of the outlet air temperature.
[0038] In some embodiments, the bottom of the heat collecting box 1 is wavy. Through the above arrangement, the area receiving solar energy can be increased, and the overall structural strength of the heat collecting box 1 can be improved.
[0039] In some embodiments, a plurality of first semicircular convexes 14 are arranged at the peaks of the bottom of the heat collecting box 1, a plurality of second semicircular convexes 15 are arranged at the valleys of the bottom of the heat collecting box 1, and the first semicircular convexes 14 and the second semicircular convexes 15 are arranged alternately. During the process of heating the heat collecting box 1 with solar energy, the cold air at the bottom will flow through the first semicircular convexes 14 and the second semicircular convexes 15, at this time, continuous ∞-shaped flow channels will be generated between the semicircular convexes, which makes it easier to take away the heat on the first semicircular convexes 14 and the second semicircular convexes 15, so that the cold air at the bottom is heated and rises to mix with the hot air at the air outlet 12, ensuring that the temperature at the air outlet 12 is higher, more constant and more stable, and realizing segmented heating and temperature control. By arranging the first semicircular convexes 14 and the second semicircular convexes 15, the area receiving solar energy and the air heat exchange area can be increased, so that the overall heat exchange is more sufficient and the efficiency is higher.
[0040] In some embodiments, a mounting ring groove 13 is formed at the opening of the heat collecting box 1, a sealing element 21 is arranged in the mounting ring groove 13, and the sealing element 21 is sleeved on the edge of the light-transmitting plate 2 along the circumference of the light-transmitting plate 2. By arranging the sealing element 21, the gap between the light-transmitting plate 2 and the heat collecting box 1 can be sealed, thereby preventing the heated air from escaping and ensuring the heating effect. By forming the mounting ring groove 13, the sealing element 21 and the light-transmitting plate 2 can be positioned conveniently.
[0041] In some embodiments, the solar air collector further comprises a fixing assembly 3, which is arranged along the circumference of the heat collecting box 1 and connected with the heat collecting box 1 and the light-transmitting plate 2. By arranging the fixing assembly 3, the light-transmitting plate 2 can be fixed on the heat collecting box 1, ensuring stable connection between them.
[0042] In some embodiments, the fixing assembly 3 comprises a frame 31 and a corner guard 32, the frame 31 is buckled on the heat collecting box 1 and the light-transmitting plate 2, and the corner guard 32 is arranged at the corner of the frame 31. In this embodiment, the frame 31 is L-shaped, and two frames 31 are buckled on the heat collecting box 1 and the light-transmitting plate 2 after being spliced into a quadrilateral. Then, the corner guard 32 is installed at the spliced butt joint position and the corner position of the frame 31. The entire light-transmitting plate 2 together with the sealing element 21 falls into the mounting ring groove 13 of the heat collecting box 1, and then the entire heat collecting box 1, the light-transmitting plate 2 and the sealing element 21 are wrapped and fixed by the frame 31, and finally the corner guard 32 is installed, so that the entire structure is more firm and beautiful. In other embodiments, the frame 31 can also be designed as an integrated structure with elasticity, such as being made of rubber or silicone, which can also be sleeved on the light-transmitting plate 2 and the heat collecting box 1, ensuring stable connection between the heat collecting box 1 and the light-transmitting plate 2.
[0043] In some embodiments, the heat collecting box 1 is provided with a filter screen 111 at the air inlet 11. By installing the filter screen 111 at the air inlet 11, larger debris can be prevented from entering the heat collecting box 1 and affecting the normal operation thereof.
[0044] In some embodiments, the S-shaped flow channel gradually narrows in the direction from the air inlet 11 to the air outlet 12. By the above arrangement, the flow rate of air at the air outlet 12 can be improved, so that the heated air can quickly flow out of the air outlet 12, ensuring the flow of air.
[0045] In some embodiments, at least one S-shaped flow partition plate 4 is arranged in the heating cavity of the heat collecting box 1, and the thickness of the root portion of the S-shaped flow partition plate 4 connected to the bottom of the heat collecting box 1 is greater than the thickness of the top portion of the S-shaped flow partition plate 4. By the above arrangement, the S-shaped flow partition plate 4 can be stably connected to the bottom of the heat collecting box 1, and the S-shaped flow channel formed thereby has the characteristics of being wide at the opening and narrow at the bottom. The top space of the S-shaped flow channel is greater than the bottom space, and the entire heating area is also increased, so that the area of the heated air is greater than the area of the cold air.
[0046] In some embodiments, the solar air collector further comprises a straight flow partition plate 5, one end of the straight flow partition plate 5 is connected to the side portion of the heat collecting box 1, and the straight flow partition plate 5 is located at the turning portion of the S-shaped flow partition plate 4. In this embodiment, two S-shaped flow partition plates 4 and straight flow partition plates 5 are arranged at intervals, thereby forming three S-shaped flow channels, which can further improve the heating efficiency of air. When the S-shaped flow partition plate 4 and the straight flow partition plate 5 are installed, the S-shaped flow partition plate 4 and the straight flow partition plate 5 are longitudinally arranged on the wave crest of the bottom of the heat collecting box 1 and transversely arranged through the wave crest and the wave trough.
[0047] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.
Claims
1. Solar air collector, characterized in that The application relates to a heat collecting box (1) with a hollow heating cavity, wherein the heating cavity is coated with a black heat-absorbing layer, and the heating cavity is provided with an S-shaped flow channel gradually increasing in cross-sectional area from the bottom to the opening direction; the heat collecting box (1) is provided with an air inlet (11) and an air outlet (12), the air inlet (11) is located at the bottom of the heat collecting box (1) and communicates with one end of the S-shaped flow channel, and the air outlet (12) is located at the side of the heat collecting box (1) and communicates with the other end of the S-shaped flow channel; a light-transmitting plate (2) is sealedly arranged at the opening of the heating cavity. The bottom of the heat collecting box (1) is in a wave shape. A plurality of first semicircular convexes (14) are arranged at the wave crests of the bottom of the heat collecting box (1), and a plurality of second semicircular convexes (15) are arranged at the wave troughs of the bottom of the heat collecting box (1), and the first semicircular convexes (14) and the second semicircular convexes (15) are arranged alternately.
2. The solar air collector according to claim 1, characterized in that An installation ring groove (13) is formed at the opening of the heat collecting box (1), a sealing element (21) is arranged in the installation ring groove (13), and the sealing element (21) is arranged at the edge of the light-transmitting plate (2) along the circumferential direction of the light-transmitting plate (2).
3. The solar air collector according to claim 2, characterized in that A fixing assembly (3) is further arranged along the circumferential direction of the heat collecting box (1), and the fixing assembly (3) is connected with the heat collecting box (1) and the light-transmitting plate (2).
4. The solar air collector of claim 1, wherein, The fixing assembly (3) comprises a frame (31) and a corner guard (32), the frame (31) is buckled on the heat collecting box (1) and the light-transmitting plate (2), and the corner guard (32) is arranged at the corner of the frame (31).
5. The solar air collector of claim 1, wherein, A filter screen (111) is arranged on the heat collecting box (1) and located at the air inlet (11).
6. The solar air collector according to claim 5, characterized in that The S-shaped flow channel gradually narrows from the air inlet (11) to the air outlet (12) along the S-shaped flow channel.
7. The solar air collector according to any of claims 1-6, characterized in that, At least one S-shaped flow separation plate (4) is arranged in the heating cavity of the heat collecting box (1), the thickness of the root of the S-shaped flow separation plate (4) connected with the bottom of the heat collecting box (1) is greater than the thickness of the top of the S-shaped flow separation plate (4).
8. The solar air collector according to any of claims 1-6, characterized in that, A straight flow separation plate (5) is further arranged, one end of the straight flow separation plate (5) is connected with the side of the heat collecting box (1), and the straight flow separation plate (5) is located at the turning position of the S-shaped flow separation plate (4).
9. The solar air collector according to any of claims 1-6, characterized in that, 10. The solar air collector according to claim 9, characterized in that