Air type solar direct heating system

Abstract

The utility model relates to the technical field of solar direct heating systems, and discloses an air type solar direct heating system which comprises an air type solar heat collector and an air return pipe, the outer side of the air type solar heat collector is connected with a circulating fan, and the outer side of the circulating fan is connected with a photovoltaic panel through a line in a matched mode. When the sun shines on the heat collector and the photovoltaic panel, the air type solar heat collector emits heat, the photovoltaic panel emits current, the current emitted by the photovoltaic panel drives the fan to extract low-temperature air from the return air inlet of a room, and finally the low-temperature air is sent back to the room from the adjustable air inlet, and when the sunlight intensity changes, the heat generation amount of the heat collector and the power generation amount of the photovoltaic panel can change synchronously. Therefore, the rotating speed of the circulating fan automatically changes along with the heat production amount of the heat collector, when hot air enters a room from the air inlet, the direction of airflow blowing into the room can be freely adjusted by adjusting the air inlet direction adjusting ball head of the air inlet, and therefore the heating comfort degree is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of solar direct heating systems, in particular to an air type solar direct heating system. Background Art

[0002] Solar energy is a renewable energy source. It refers to the thermal radiation energy of the sun (see the three ways of heat transmission: radiation), and its main manifestation is the so-called sunlight. In modern times, it is generally used to generate electricity or provide energy for water heaters. The solar heating system refers to a system that converts solar energy into thermal energy through a collector and uses it as a heat source to heat the room.

[0003] However, the existing solar heating system generally uses water as the working medium during use. In winter, when there is sunlight, the glass heat collecting tube directly heats the water in the tube and provides indoor heating through the hot water circulation system. However, when there is no sun at night or on cloudy days, the water in the tube will cool down, causing the heat collecting tube or the circulation pipeline to freeze or even crack. Conversely, in the summer when heating is not required, the intense sunlight will cause the temperature of the heat collecting tube to be too high, causing the risk of the heat collecting tube rupture. Moreover, once the heat collecting tube ruptures, the circulating water of the system will leak, causing the entire system to fail to work. The existing solar heating system has a lot of maintenance work caused by problems such as pipe explosion, pipe rupture, and water leakage. In addition, water with drastic temperature changes can easily generate scale and cause pipe blockage. Therefore, those skilled in the art provide an air-type solar direct heating system to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide an air-type solar direct heating system to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An air-type solar direct heating system comprises an air-type solar collector and a return air duct, wherein the outer side of the air-type solar collector is connected to a circulation fan, and the outer side of the circulation fan is connected to a photovoltaic panel through a line;

[0007] The air-type solar collector includes a double-pass solar collector tube, an upper header is arranged on the top of the double-pass solar collector tube, a lower header is arranged on the bottom of the double-pass solar collector tube, one end of the upper header is connected to an air inlet pipe, one end of the air inlet pipe is connected to an adjustable air inlet, a heating room is arranged outside the adjustable air inlet, and one end of the return air pipe is connected to the return air outlet.

[0008] As a further solution of the utility model: the adjustable air inlet includes an air inlet direction adjusting ball head, an air inlet volume adjusting knob is installed inside the air inlet direction adjusting ball head, and an air inlet volume adjusting sheet is installed inside the air inlet direction adjusting ball head.

[0009] As a further solution of the utility model: the circulating fan is driven by the photovoltaic panel.

[0010] As a further solution of the utility model: the photovoltaic panel is fixed to the top of the heating room by a bracket.

[0011] As a further solution of the utility model: a metal grille is arranged in the return air port to prevent debris from being sucked in or small animals from crawling in.

[0012] As a further solution of the utility model: the upper header and the lower header are the mounting bracket and the junction box of the double-pass solar thermal collector tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the device is in use, the system equipment and the heating room form an air circulation loop of a relatively closed room. When the sun shines on the collector and the photovoltaic panel, the air-type solar collector heats up, and the photovoltaic panel generates current. The current generated by the photovoltaic panel drives the fan to extract the low-temperature air from the return air port of the room and push it into the lower header of the solar collector. Driven by the circulation fan, the air flows from bottom to top through the double-pass heat collecting tube of the solar collector for heating. After converging in the upper header, it flows into the air inlet pipe together and is finally sent back to the room from the adjustable air inlet. When the intensity of sunlight changes, the heat generated by the collector and the power generation of the photovoltaic panel will change synchronously, so that the speed of the circulation fan automatically changes with the heat generated by the collector. When the hot air enters the room from the air inlet, the direction of the airflow blowing into the room can be freely adjusted by adjusting the air inlet direction adjustment ball head, so as to ensure the comfort of heating. When the air volume adjustment knob on the air inlet is adjusted, the air volume adjustment piece of the air outlet will be driven to change position, and the size of the air outlet will be changed, so as to achieve air volume adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a system structure diagram of an air-type solar direct heating system;

[0016] Figure 2 It is a schematic diagram of an adjustable air inlet structure in an air-type solar direct heating system;

[0017] Figure 3 This is a schematic diagram of the return air vent structure in an air-type solar direct heating system.

[0018] In the figure: 1. Air-type solar collector; 11. Double-pass solar collector tube; 12. Upper header; 13. Lower header; 2. Circulation fan; 3. Photovoltaic panel; 41. Air inlet duct; 42. Return air duct; 5. Adjustable air inlet; 51. Air inlet direction adjustment ball head; 52. Air inlet volume adjustment knob; 53. Air inlet volume adjustment plate; 6. Return air vent; 7. Heating room. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 In the embodiment of the utility model, an air-type solar direct heating system includes an air-type solar collector 1 and a return air duct 42. A circulating fan 2 is connected to the outside of the air-type solar collector 1. A photovoltaic panel 3 is connected to the outside of the circulating fan 2 through a line. The circulating fan 2 is driven by the photovoltaic panel 3 to generate electricity.

[0021] The air-type solar collector 1 includes a double-pass solar heat collecting tube 11, an upper header 12 is arranged on the top of the double-pass solar heat collecting tube 11, a lower header 13 is arranged on the bottom of the double-pass solar heat collecting tube 11, the upper header 12 and the lower header 13 are mounting brackets and junction boxes of the double-pass solar heat collecting tube 11, one end of the upper header 12 is connected to an air inlet pipe 41, one end of the air inlet pipe 41 is connected to an adjustable air inlet 5, a heating room 7 is arranged outside the adjustable air inlet 5, the photovoltaic panel 3 is specifically fixed to the top of the heating room 7 through a bracket, one end of the return air pipe 42 is connected to a return air outlet 6, and a metal grille is arranged in the return air outlet 6 to prevent debris from being sucked in or small animals from crawling in;

[0022] The adjustable air inlet 5 comprises an air inlet direction adjusting ball head 51 , an air inlet volume adjusting knob 52 is installed inside the air inlet direction adjusting ball head 51 , and an air inlet volume adjusting sheet 53 is installed inside the air inlet direction adjusting ball head 51 .

[0023] The working principle of the utility model is: the system equipment and the heating room form an air circulation loop of a relatively closed room. When the sun shines on the collector 1 and the photovoltaic panel 3, the air-type solar collector 1 generates heat, and the photovoltaic panel 3 generates current. The current generated by the photovoltaic panel 3 drives the fan 2 to extract the low-temperature air from the return air port 42 of the room, and pushes it into the lower header 13 of the solar collector. Driven by the circulation fan 2, the air flow flows from bottom to top through the double-pass heat collecting pipe 11 of the solar collector for heating, and after converging through the upper header 12, it flows into the air inlet pipe 41 together, and is finally sent back to the room from the adjustable air inlet 5. When the intensity of sunlight changes, the heat generated by the collector 1 and the power generated by the photovoltaic panel 3 will change synchronously, so that the rotation speed of the circulating fan 3 will automatically change with the heat generated by the collector 1. When hot air enters the room from the air inlet 5, the direction of the airflow blowing into the room can be freely adjusted by adjusting the wind direction adjustment ball head 51 of the air inlet 5, so as to ensure the comfort of heating. When the air volume adjustment knob 52 on the air inlet 5 is adjusted, the position of the air inlet volume adjustment piece 53 of the air outlet 5 will be driven to change, and the size of the air outlet will be changed, so as to achieve air volume adjustment.

[0024] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An air-type solar direct heating system, comprising an air-type solar collector (1) and a return air duct (42), characterized in that: The outer side of the air-type solar thermal collector (1) is connected to a circulation fan (2), and the outer side of the circulation fan (2) is connected to a photovoltaic panel (3) via a circuit. The air-type solar collector (1) comprises a double-pass solar heat collecting tube (11), an upper header (12) is arranged at the top of the double-pass solar heat collecting tube (11), a lower header (13) is arranged at the bottom of the double-pass solar heat collecting tube (11), one end of the upper header (12) is connected to an air inlet pipe (41), one end of the air inlet pipe (41) is connected to an adjustable air inlet (5), a heating room (7) is arranged outside the adjustable air inlet (5), and one end of the return air pipe (42) is connected to the return air port (6).

2. The air-type solar direct heating system according to claim 1, characterized in that: The adjustable air inlet (5) comprises an air inlet direction adjustment ball head (51), an air inlet volume adjustment knob (52) is installed inside the air inlet direction adjustment ball head (51), and an air inlet volume adjustment sheet (53) is installed inside the air inlet direction adjustment ball head (51).

3. The air-type solar direct heating system according to claim 1 is characterized in that: The circulating fan (2) is driven by electricity generated by the photovoltaic panel (3).

4. The air-type solar direct heating system according to claim 1 is characterized in that: The photovoltaic panel (3) is fixed to the top of the heating room (7) via a bracket.

5. The air-type solar direct heating system according to claim 1, characterized in that: The return air port (6) is provided with a metal grille to prevent debris from being sucked in or small animals from crawling in.

6. The air-type solar direct heating system according to claim 1, characterized in that: The upper header (12) and the lower header (13) are mounting brackets and junction boxes for the double-pass solar heat collecting tube (11).

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