CN220303922U

CN220303922U - Solar air heat collector

Info

Publication number: CN220303922U
Application number: CN202321490413.3U
Authority: CN
Inventors: 蔡庆峰; 刘芳; 刘俊红; 贾斌广; 李佳琪; 王晓梦; 王泽林
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-01-05
Anticipated expiration: 2033-06-12

Abstract

The utility model relates to the technical field of air heat collectors, and particularly discloses a solar air heat collector which comprises a shell, wherein an air inlet and an air outlet are formed in the shell, the shell is internally divided into a flow passage which is communicated with each other through a plurality of guide plates, the shell is internally divided into an upper heat collection cavity and a lower heat collection cavity through a partition plate, the partition plate is positioned in the middle of the air inlet and the air outlet, and spoilers are arranged on two sides of the partition plate; the air flow is further dispersed through the spoiler, so that the air flow is more uniform, a temperature dead zone is broken, the air is better guided to flow in the flow channel, and the occurrence of vortex is reduced; meanwhile, the layered heat collection mode is adopted, so that the air heat exchange thickness is reduced, the heat exchange speed is improved, the energy loss is reduced, and the heat collection performance of the solar air heat collector is further improved.

Description

Solar air heat collector

Technical Field

The utility model relates to the technical field of air heat collectors, in particular to a solar air heat collector.

Background

The solar air collector is a common solar heat utilization device, takes air as a heat transfer medium, and transmits the collected heat to a functional end, and has the advantages of simple structure, low cost, large solar radiation receiving area, wide application in the fields of building heating, product drying and the like. Compared with a hot water collector, the solar air collector uses air as a heat transfer medium, and the heat conductivity coefficient of the solar air collector is far smaller than that of water, so that the temperature of the heat collecting plate is higher, and the heat loss is larger. In addition, because the density and specific heat of air are far smaller than those of water, the heat transfer and storage capacity of the air is also far smaller.

The traditional flat-plate solar air collector has the defect of low heat collecting efficiency, and the heat collecting efficiency of the air collector is improved by changing the shape of a runner to strengthen the convection heat exchange capacity of air and a heat collecting plate. CN115950100a is a flat-plate pure solar air collector, and by providing a partition plate, air flow is guided, and compared with the conventional flat-plate collector, heat collecting efficiency is improved. However, a dead zone of temperature and vortex (including corner vortex and separation vortex) are generated in each flow passage, which causes energy loss and limits the improvement of heat collecting efficiency.

Disclosure of Invention

The utility model aims at the defects in the prior art, and provides the solar air collector, which further disperses the air flow through the spoiler, so that the air flow is more uniform, the temperature dead zone is broken, the air flow in the flow channel is better guided, and the occurrence of vortex is reduced; meanwhile, the layered heat collection mode is adopted, so that the air heat exchange thickness is reduced, the heat exchange speed is improved, the energy loss is reduced, and the heat collection performance of the solar air heat collector is further improved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a solar air collector, includes the shell, be equipped with air intake and air outlet on the shell, cut apart into the runner that is linked together through polylith guide plate in the shell, divide into heat collection chamber and lower heat collection chamber through the division board in the shell, the baffle is located the intermediate position of air intake and air outlet, the both sides of baffle are equipped with the spoiler.

Preferably, the guide plate is a straight plate or a wave plate.

Preferably, the spoiler is of a folded plate structure with an included angle of 30-60 degrees.

Preferably, the air inlet is connected with an air inlet nozzle, and the air outlet is connected with a main air outlet pipe.

Preferably, the air inlet nozzle comprises a filter box, one end of the filter box is connected with an air inlet pipe, the other end of the filter box is connected with an air outlet pipe connected with the air inlet, and a filter screen positioned between the air inlet pipe and the air outlet pipe is arranged in the filter box.

Preferably, the filter screen is transversely arranged, the air inlet pipe is positioned below the filter screen, and the air outlet pipe is positioned above the filter screen.

Preferably, the bottom of the filter box is connected with a dust box, and the dust box is positioned below the filter screen.

Preferably, a screen plate is arranged in the dust box.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the air flow is further dispersed through the spoiler, so that the air flow is more uniform, a temperature dead zone is broken, the air is better guided to flow in the flow channel, and the occurrence of vortex is reduced; meanwhile, the layered heat collection mode is adopted, so that the air heat exchange thickness is reduced, the heat exchange speed is improved, the energy loss is reduced, and the heat collection performance of the solar air heat collector is further improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic perspective view of an air inlet nozzle;

FIG. 3 is a cross-sectional view of an air inlet nozzle;

FIG. 4 is a cross-sectional view A-A of FIG. 1;

fig. 5 is a sectional view of B-B of fig. 1.

In the figure: 1-an air inlet nozzle; 101-an air inlet pipe; 102-a filter cartridge; 103-a dust box; 104-an air outlet pipe; 105-filtering net; 106-a screen plate; 2-a housing; 201-upper heat collection chamber; 202-a lower heat collection chamber; 3-a deflector; 4-spoilers; 5-an air outlet pipe; 6-dividing plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, 4 and 5, a solar air collector comprises a shell 2, wherein an air inlet 1 and an air outlet 5 are formed in the shell 2, the shell 2 is internally divided into flow channels which are communicated through a plurality of guide plates 3, adjacent flow channels are communicated end to form a serpentine loop, the shell 2 is internally divided into an upper heat collection cavity 201 and a lower heat collection cavity 202 through a partition plate 6, the partition plate is positioned in the middle position of the air inlet 1 and the air outlet 5, wind flows into the upper heat collection cavity 201 and the lower heat collection cavity 202 respectively through the air inlet 1 to exchange heat, then flows out from the air outlet 5, the thickness of each heat collection cavity is reduced under the condition that the whole heat exchange space is not changed, the heat exchange efficiency in each heat collection cavity is improved, the two sides of the partition plate are provided with spoiler plates 4, the spoiler plates are bent to form a bending angle which is 30-60 degrees, the wind flows are further dispersed through the spoiler plates 4, the temperature dead zone is broken, the air is better guided to flow in the flow channels is reduced, and the heat collection efficiency is improved.

The spoilers 4 are arranged in a number of 2-3-2-3, the upper spoilers 4 and the lower spoilers 4 are arranged in a staggered way, and the distance between the upper layer and the lower layer of the spoilers 4 is about 38 mm.

The area and the intensity of vortex can be effectively reduced by arranging the spoiler 4, and the reason is that: the existence of the spoiler 4 guides the air to flow to two sides of the triangular spoiler 4, so that the flow separation and reattachment phenomena during the air flow are weakened to a certain extent, and the speed distribution of the air is more uniform.

The deflector 3 is a straight plate or a wave plate, and the wave plate can further guide the wind flow at two sides.

The presence of the vortex causes the air to rotate continuously in the vortex region, so that heat absorbed by the air in the vortex region cannot be discharged through the outlet and can only be dissipated to the external environment through the transparent cover plate. The strength and the area of the air vortex are reduced by the arrangement of the shape spoiler 4, so that the temperature dead zone in the air flowing process can be improved, and the thermal performance of the solar air collector is further improved.

In order to reduce the dust entering the heat collector, the air inlet 1 is connected with an air inlet nozzle, and the air outlet 5 is connected with a main air outlet pipe.

As shown in fig. 2-3, the air inlet nozzle comprises a filter box 102, one end of the filter box 102 is connected with an air inlet pipe 101, the other end of the filter box 102 is connected with an air outlet pipe 104 connected with the air inlet 1, and a filter screen 105 positioned between the air inlet pipe 101 and the air outlet pipe 104 is arranged in the filter box 102.

In order to improve the dust removal effect, the filter screen 105 is transversely arranged, the air inlet pipe 101 is positioned below the filter screen 105, and the air outlet pipe 104 is positioned above the filter screen 105.

The bottom of the filter box 102 is connected with the dust box 103, the dust box 103 is located below the filter screen 105, after the filter screen 105 is used, dust at the bottom of the filter screen 105 automatically falls into the dust box 103 under the action of gravity, a screen plate 106 is arranged in the dust box 103, the dust falls below the screen plate 106, and in the air inlet process, the screen plate 106 can block the dust in the dust box 103, so that the dust in the dust box 103 is prevented from being blown up by wind flow as much as possible.

The dust box 103 is connected with the filter box 102 by bolts, a sealing ring is arranged between the dust box 103 and the filter box 102, and after long-term use, the dust box 103 can be detached to clean dust.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a solar air collector, includes the shell, be equipped with air intake and air outlet on the shell, cut apart into the runner that is linked together, its characterized in that through polylith guide plate in the shell: the shell is internally divided into an upper heat collection cavity and a lower heat collection cavity through a partition plate, the partition plate is positioned in the middle of the air inlet and the air outlet, and spoilers are arranged on two sides of the partition plate.

2. A solar air collector as defined in claim 1 wherein: the guide plate is a straight plate or a wave plate.

3. A solar air collector as defined in claim 1 wherein: the spoiler is of a folded plate structure with an included angle of 30-60 degrees.

4. A solar air collector as defined in claim 1 wherein: the air inlet is connected with an air inlet nozzle, and the air outlet is connected with a main air outlet pipe.

5. A solar air collector as defined in claim 4 wherein: the air inlet nozzle comprises a filter box, one end of the filter box is connected with an air inlet pipe, the other end of the filter box is connected with an air outlet pipe connected with the air inlet, and a filter screen positioned between the air inlet pipe and the air outlet pipe is arranged in the filter box.

6. A solar air collector as defined in claim 5 wherein: the filter screen is transversely arranged, the air inlet pipe is positioned below the filter screen, and the air outlet pipe is positioned above the filter screen.

7. A solar air collector as defined in claim 6 wherein: the bottom of the filter box is connected with a dust box, and the dust box is positioned below the filter screen.

8. A solar air collector as defined in claim 7 wherein: the dust box is internally provided with a screen plate.