CN218475764U

CN218475764U - Photovoltaic and photo-thermal integrated garbage bin

Info

Publication number: CN218475764U
Application number: CN202222610495.2U
Authority: CN
Inventors: 徐煜昊; 李小乐; 朱海淼; 胡国荣; 都艺伟; 雒飞
Original assignee: Everbright Envirotech China Ltd; Everbright Environmental Protection Research Institute Nanjing Co Ltd; Everbright Environmental Protection Technology Research Institute Shenzhen Co Ltd
Current assignee: Everbright Envirotech China Ltd; Everbright Environmental Protection Research Institute Nanjing Co Ltd; Everbright Environmental Protection Technology Research Institute Shenzhen Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-02-14
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a photovoltaic and photo-thermal integrated garbage bin, which comprises a garbage bin body, a photovoltaic and photo-thermal roof and a hot air returning pipeline; the front end of the garbage bin body is provided with a discharge door, and the upper part of the rear end of the garbage bin body is provided with a primary air exhaust opening; the photovoltaic photo-thermal roof comprises a photovoltaic photo-thermal module, an air suction section, an air collection section, an inverter and a cable; the hot air return pipeline comprises a header, a return pipe, a distribution pipe, a fan, a thermometer and a flowmeter. The utility model discloses an integrative garbage bin of photovoltaic light and heat, this garbage bin make full use of garbage bin roofing space carry out photovoltaic power generation to utilize phase transition heat accumulation layer to absorb the heat energy that solar energy converts to and heat the air, both play cooling photovoltaic module and increase the electricity generation income, play the beneficial effect who heats the garbage bin again, energy saving and emission reduction benefit is showing.

Description

Photovoltaic and photo-thermal integrated garbage bin

Technical Field

The utility model belongs to the technical field of the technique of garbage bin and specifically relates to an integrative garbage bin of photovoltaic light and heat is related to.

Background

The household garbage incineration power generation is characterized in that chemical energy in household garbage is converted into heat energy through a combustion mode, the generated heat energy is used for heating steam, and a steam turbine is pushed to rotate through the steam to drive a generator to work so as to convert the heat energy into electric energy. Because the domestic garbage has high water content and low heat value and is not easy to burn, in order to improve the heat value of the garbage entering the furnace and enable the garbage to be easy to burn, the measures which are usually adopted are that the fresh domestic garbage is sent into a garbage pool to be fermented, partial water in the domestic garbage is drained through the combined action of gravity and microorganisms, and then the domestic garbage is sent into a furnace chamber to be burned. The better the domestic garbage fermentation is, the more the water is drained, the better the garbage combustion is, and in addition, the reduction of the water content of the garbage entering the furnace can also reduce the water vapor content in the smoke exhaust, reduce the smoke loss and improve the power generation income.

Under the condition that the garbage components are not changed, the production amount of percolate depends on the quality of the fermentation condition of garbage in a garbage bin, the fermentation temperature is a key factor influencing the fermentation effect, and in a certain temperature range, the higher the temperature is, the better the fermentation is, the proper fermentation temperature is between 30 and 40 ℃, and 35 ℃ is the best. However, most garbage bins of garbage incineration power plants in China are not provided with special heating facilities at present, and the temperature in the garbage bins is only maintained by the self heat productivity of garbage piles. Because the existing garbage bins are designed by adopting negative pressure, a large amount of cold air outside the bins enters the garbage bins to reduce the temperature of the garbage bins in winter, and in addition, ice and snow doped in the garbage also have great influence on garbage fermentation, so that the garbage in a hearth is unstable and insufficient in combustion, the temperature of the hearth is difficult to control, and the heat efficiency is low. And the combustion of the hearth is unstable, and the operation party needs to put oil to support combustion, so that the operation cost is increased, and the economic benefit of the waste incineration power plant is further influenced.

Patent CN203976651U discloses a solar photo-thermal circulation garbage treatment device, which comprises a garbage bin, a garbage feeding port, a garbage discharging port and a gas thermal circulation treatment system, wherein the gas thermal circulation treatment system comprises a gas collection treatment device, a backflow pipe and a gas injection device; the collecting and processing device is connected with the return pipe, and the gas injection device is communicated with the return pipe; the bottom of the garbage bin is provided with an air inlet, and the top of the garbage bin is provided with a light and heat collecting plate; the garbage feeding port and the garbage discharging port are arranged on the garbage bin body of the garbage bin. The patent utilizes the photothermal effect of solar energy and the air thermal circulation principle to promote the decomposition of garbage, improves the fermentation efficiency, effectively treats domestic garbage, and reduces the pollution to the environment. The device does not adopt phase change heat storage material, therefore the garbage storehouse can not keep suitable fermentation temperature night, and this application utilizes phase change heat storage material can release phase change heat storage material's latent heat at night and provide lasting hot-blast for the garbage storehouse.

Patent CN215489741U discloses a heating system for a winter garbage bin and a discharging platform, and relates to the technical field of garbage incineration; the garbage truck unloading device comprises an unloading chamber, wherein one side of the unloading chamber is provided with an opening, the bottom of the unloading chamber is used as an unloading platform, one side of the unloading chamber, which is provided with the opening, is provided with a garbage bin, the opening of the unloading chamber is hermetically connected with the garbage bin to form a closed structure, the unloading chamber is provided with a vehicle inlet and a vehicle outlet, and the garbage bin is provided with a plurality of unloading ports in butt joint with the unloading platform; and the garbage bin and the discharging chamber are internally provided with a first heating device. The heating source of this patent uses hot water and hot steam, while the present application uses light and heat.

Patent CN215808505U discloses a garbage bin heating system, relate to garbage bin heating technology field, including the boiler steam drum with set up in the continuous calandria of boiler steam drum bottom, it has garbage bin heating shower nozzle to connect through garbage bin heated conduit in the middle part right-hand member of calandria, garbage bin heated conduit left end has from left to right set gradually two garbage bin heating main door and manometer, be provided with the dodge gate between garbage bin heated conduit and the garbage bin heated shower nozzle, garbage bin heated nozzle specifically is phi 28x4 mm's steel pipe, the orifice has been seted up to the one end that garbage bin heated conduit was kept away from to the steel pipe, a plurality of spouts have been seted up on the steel pipe surface. The heating heat source of this patent adopts the boiler and links row heat energy, and what this application adopted is light and heat.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, and provide an integrative garbage bin of photovoltaic light and heat, this garbage bin make full use of garbage bin roofing space carries out photovoltaic power generation to utilize phase transition heat accumulation layer to absorb the heat energy and the heated air that solar energy converts to, both play cooling photovoltaic module and increase the generating revenue, play the beneficial effect of heating garbage bin again.

In order to achieve the above object, the utility model discloses a photovoltaic light and heat integrative garbage storehouse's concrete technical scheme as follows:

a photovoltaic and photo-thermal integrated garbage bin comprises a garbage bin body, a photovoltaic and photo-thermal roof and a hot air returning pipeline; the front end of the garbage bin body is provided with a discharge door, and the upper part of the rear end of the garbage bin body is provided with a primary air exhaust opening; the photovoltaic photo-thermal roof comprises a photovoltaic photo-thermal module, an air suction section, an air collection section, an inverter and a cable; the outside of the air suction section and the air collection section is insulated by heat insulation cotton; the hot air return pipeline comprises a header, a return pipe, a distribution pipe, a fan, a thermometer and a flowmeter; the collection box is used for collecting hot air heated by the photovoltaic photothermal module; the return pipe is used for returning hot air; the fan is used for pressurizing to overcome on-way resistance; the thermometer and the flowmeter are used for monitoring the temperature and the flow of the hot air; the distribution pipe is used for uniformly distributing hot air into the garbage bin;

the photovoltaic photo-thermal modules are laid on the upper surface of the garbage bin body in rows, and are connected with each other through vertical overlocking; one end of the air suction section is communicated with the lower end of the photovoltaic photo-thermal module, and the other end of the air suction section is communicated with the garbage bin body; one end of the gas collection section is communicated with the upper end of the photovoltaic photo-thermal module, and the other end of the gas collection section is communicated with the header; the photovoltaic photo-thermal module is connected with an inverter through a cable, and particularly a photovoltaic assembly in the photovoltaic photo-thermal module is connected with the inverter through a cable;

one end of the return pipe is communicated with the header, and the other end of the return pipe is communicated with the distribution pipe; the distribution pipe is arranged at the lower position in the garbage bin body and used for uniformly distributing hot air into the garbage bin body; the return pipe is provided with a fan for increasing pressure to overcome on-way resistance, a thermometer for monitoring the temperature of hot air and a flowmeter for monitoring the flow of the hot air; the collection box and the return pipe are insulated by heat insulation cotton.

Further, the photovoltaic photo-thermal module comprises an alloy substrate, a phase-change heat storage layer, a fin heat exchanger, a rubber seal and at least one photovoltaic module, wherein the photovoltaic module is used for converting solar energy into electric energy, the alloy substrate adopts a full-length structure, and the length of the alloy substrate is equal to the width of the garbage bin; the phase-change heat storage layer is used for recovering and storing heat energy generated by the photovoltaic module, the fin heat exchanger is used for heating air, a closed air channel is formed between the alloy substrate and the phase-change heat storage layer, and the air speed in the air channel is controlled to be 1-3m/s; the rubber sealing strip is a weather-resistant rubber sealing strip; photovoltaic module passes through the sticky subsides of resistant structure on the alloy base plate, and photovoltaic module bottom and phase change heat accumulation layer bond through heat conduction silica gel, and phase change heat accumulation layer bottom is connected with finned heat exchanger.

Furthermore, rubber sealing strips for sealing are arranged among the photovoltaic modules so as to isolate the influence of rain and snow on the phase change heat storage layer; the periphery is sealed by sealant to isolate the influence of rain, snow and the like on the phase change heat storage layer.

Further, the alloy substrate is made of aluminum alloy, and the length of the alloy substrate is equal to the width of the garbage bin body; the fin heat exchanger is made of aluminum.

Further, the phase-change material in the phase-change heat storage layer is polyethylene glycol 1500 at 40 ℃ or dimethoxy phenylpropionic acid at 48 ℃ and magnesium sulfate heptahydrate at 48.5 ℃.

Further, the fan adopts an axial flow fan.

Furthermore, the air suction section is provided with an air suction opening which is positioned above the discharge door and used for sucking cold air leaked into the discharge door.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses combined photovoltaic power generation and phase transition energy storage technology, firstly make full use of the garbage bin roofing space carry out photovoltaic power generation, secondly the heat energy heating garbage bin that phase transition heat accumulation layer recycle solar energy converted to had both played cooling photovoltaic module and increased the electricity generation income, played the beneficial effect who promotes the rubbish fermentation again, energy saving and emission reduction benefit is obvious.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a side view of the present invention;

fig. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic structural view of the photovoltaic/thermal module of the present invention;

FIG. 4 is a schematic view of the installation of the rubber seal of the present invention;

the notation in the figure is:

1. a garbage bin body; 11. a discharge door; 12. a primary air extraction opening;

2. a photovoltaic photo-thermal roof; 21. a photovoltaic photo-thermal module; 211. a photovoltaic module; 212. an alloy substrate; 213. a phase-change heat storage layer; 214. a finned heat exchanger; 215. a rubber seal; 22. a suction section; 23. a gas collection section; 24. an inverter; 25. a cable;

3. a hot air return line; 31. a header; 32. returning the pipe; 33. a distribution pipe; 34. a fan; 35. a thermometer; 36. a flow meter.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings and preferred embodiments.

In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second" and the like do not indicate the degree of importance of the component parts, and thus, are not to be construed as limiting the present invention. The specific dimensions used in the present embodiment are only for illustrating the technical solutions, and do not limit the protection scope of the present invention.

Example 1:

referring to fig. 1-4, the present invention provides a technical solution: a photovoltaic and photo-thermal integrated garbage bin comprises a garbage bin body 1, a photovoltaic and photo-thermal roof 2 and a hot air returning pipeline 3; the front end of the garbage bin body 1 is provided with a discharge door 11, and the upper part of the rear end of the garbage bin body 1 is provided with a primary air pumping hole 12; the photovoltaic photo-thermal roof 2 comprises a photovoltaic photo-thermal module 21, an air suction section 22, an air collection section 23, an inverter 24 and a cable 25; the outside of the air suction section 22 and the air collection section 23 is insulated by heat insulation cotton; the photovoltaic roof is characterized in that a solar power generation device is arranged at the top of a house, and power is generated in the urban and rural building field by utilizing a solar photovoltaic technology so as to achieve the aims of energy conservation and emission reduction; the hot air return line 3 includes a header 31, a return pipe 32, a distribution pipe 33, a fan 34, a thermometer 35, and a flowmeter 36; the header 31 is used for concentrating hot air heated by the photovoltaic photothermal module 21; the return pipe 32 is used for returning the hot air; the fan 34 is used to boost pressure to overcome on-way resistance; the thermometer 35 and the flow meter 36 are used for monitoring the temperature and the flow rate of the hot air; the distribution pipe 33 is used for uniformly distributing hot air into the garbage bin;

the photovoltaic photo-thermal modules 21 are laid on the upper surface of the garbage bin body 1 in rows, and the photovoltaic photo-thermal modules 21 are connected with the photovoltaic photo-thermal modules 21 through vertical overlocking; one end of the air suction section 22 is communicated with the lower end of the photovoltaic photo-thermal module 21, and the other end of the air suction section is communicated with the garbage bin body 1; one end of the gas collection section 23 is communicated with the upper end of the photovoltaic photo-thermal module 21, and the other end is communicated with the header 31; the photovoltaic photo-thermal module 21 is connected with an inverter 24 through a cable 25, and specifically, a photovoltaic module 211 in the photovoltaic photo-thermal module 21 is connected with the inverter 24 through the cable 25;

one end of the return pipe 32 is communicated with the header 31, and the other end is communicated with the distribution pipe 33; the distribution pipe 33 is arranged at the lower position in the garbage bin body 1 and used for uniformly distributing hot air into the garbage bin body 1; the return pipe 32 is provided with a fan 34 for pressurizing to overcome on-way resistance, a thermometer 35 for monitoring the temperature of the hot air, and a flow meter 36 for monitoring the flow rate of the hot air; the header 31 and the return pipe 32 are insulated by heat-insulating cotton.

Further, the photovoltaic photo-thermal module 21 comprises an alloy substrate 212, a phase-change heat storage layer 213, a fin heat exchanger 214, a rubber seal 215 and at least one photovoltaic module 211, wherein the photovoltaic module 211 is a solar cell module, the photovoltaic module 211 is used for converting solar energy into electric energy, the alloy substrate 212 adopts a full-length structure, and the length of the alloy substrate is equal to the width of a garbage bin; the phase-change heat storage layer 213 is used for recovering and storing heat energy generated by the photovoltaic module, the fin heat exchanger 214 is used for heating air, a closed air channel is formed between the alloy substrate 212 and the phase-change heat storage layer 213, and the air speed in the air channel is controlled to be 1-3m/s; the rubber seal 215 is a weather-resistant rubber seal; the photovoltaic assembly 211 is adhered to the alloy substrate 212 through a weather-resistant structural adhesive, wherein the structural adhesive is an adhesive which has high strength (compression strength is greater than 65MPa, steel-steel positive tensile adhesive strength is greater than 30MPa, and shear strength is greater than 18 MPa), can bear larger load, is aging-resistant, fatigue-resistant and corrosion-resistant, has stable performance in the expected life, and is suitable for bearing strong structural member adhesion; the bottom of the photovoltaic module 211 is bonded with the phase-change heat storage layer 213 through heat-conducting silica gel, and the bottom of the phase-change heat storage layer 213 is connected with the fin heat exchanger 214; phase change heat storage is a high and new energy storage technology based on phase change energy storage materials, and is one of important ways for improving energy utilization rate, latent heat storage (phase change heat storage) is a technology for storing energy by utilizing the principle that substances absorb or release latent heat of phase change in the processes of solidification/melting, condensation/gasification, desublimation/sublimation and other forms of phase change.

Further, rubber seals 215 for sealing are arranged between the photovoltaic modules 211 to isolate the influence of rain and snow on the phase change heat storage layer 213; the periphery is sealed by a sealant to isolate the influence of rain, snow and the like on the phase-change heat storage layer.

Further, the alloy substrate 212 is made of aluminum alloy, and the length of the alloy substrate is equal to the width of the garbage bin body 1; the fin heat exchanger 214 is made of aluminum.

Further, the phase-change material in the phase-change heat storage layer 213 is polyethylene glycol 1500 at 40 ℃ or dimethoxy phenylpropionic acid at 48 ℃ and magnesium sulfate heptahydrate at 48.5 ℃.

Further, the fan 34 is an axial fan.

Further, the air suction section 22 is provided with an air suction opening, and the air suction opening is located above the discharging door 11 and used for sucking cold air leaked into the discharging door 11.

The working principle is as follows:

at present, a garbage bin heating measure of a garbage incineration power plant generally adopts a heat pump to recover waste heat or utilizes saturated steam to heat air of the garbage bin so as to maintain the fermentation temperature of the garbage bin. The heat pump is used for recovering waste heat, the system is complex, the manufacturing cost is high, the saturated steam is used for heating air in the garbage bin, the operation cost is high, and the economic benefit is poor.

Because the area of the roof of the garbage bin is large, and the roof is not utilized in the design of the conventional garbage bin, the photovoltaic cell can be installed on the roof of the garbage bin, and the space of the roof of the garbage bin can be fully utilized. When the photovoltaic cell converts solar energy into electric energy, the photoelectric conversion efficiency is only about 20%, the rest 80% of solar energy is converted into heat energy which is dissipated to the external environment, the temperature of the photovoltaic cell is increased, the surface temperature of the photovoltaic cell is about 50 ℃ when the photovoltaic cell works, the conversion efficiency of the photovoltaic cell is in negative correlation with the working temperature, and the higher the temperature is, the lower the conversion efficiency is. The efficiency of the crystalline silicon solar cell is reduced by 0.3 to 0.5 percent when the working temperature of the photovoltaic cell rises by 1 ℃. Therefore, the surface temperature of the photovoltaic cell can be reduced by arranging a proper cooling device to improve the photoelectric conversion efficiency of the photovoltaic cell, and the heat absorbed by the cooling device can be recycled to heat the garbage bin.

In the present invention, the photovoltaic module 211 converts part of the solar energy into direct current through the "photovoltaic effect", and transmits the direct current to the inverter 24 through the cable 25 to be converted into alternating current, and the solar energy that is not converted by the photovoltaic module 211 is absorbed by the phase change heat storage layer 213 in the form of heat energy. The phase change temperature of the phase change heat storage layer 213 is about 45 ℃, and the phase change latent heat of the phase change material is large, so that the heat storage capacity is high, the temperature of the photovoltaic module 211 can be cooled to about 45 ℃, and the photoelectric conversion efficiency of the photovoltaic module 211 is improved.

After entering the air duct, the cold air sucked from the air suction port of the air suction section 22 exchanges heat with the fin heat exchanger 214, and the heat stored in the phase change heat storage material is used for heating the cold air to raise the air temperature to about 40 ℃. In addition, the phase change heat storage layer 213 heats the cold air by continuously releasing latent heat at night, thereby ensuring continuous supply of hot air.

The hot air generated by each photovoltaic and thermal module 21 is collected in the collecting section 23 and enters the collecting box 31, and is returned to the distributing pipe 33 in the lower part of the front wall of the garbage bin through the return pipe 32, and the distributing pipe 33 uniformly blows the hot air to the garbage stack body. Referring to fig. 1, the garbage stack is generally a slope stacked with a certain inclination angle, and because the density of the hot air is low, the hot air will rise along the garbage stack, thereby generating a better heating effect on the garbage. The fan extracts air in the garbage bin from the air extraction opening at the upper part of the rear wall of the garbage bin to maintain the negative pressure of the garbage bin, so that odor generated by fermentation of the garbage bin is prevented from leaking outwards.

To sum up, the utility model provides an integrative garbage storehouse of photovoltaic light and heat, this garbage storehouse is by garbage storehouse body 1, photovoltaic light and heat roof 2, and hot-blast loopback pipeline 3 is constituteed, and this integrative solar energy garbage storehouse of photovoltaic light and heat make full use of garbage storehouse roofing space carries out photovoltaic power generation to recycle photovoltaic module's waste heat heating garbage storehouse, played the effect that energy saving and emission reduction synergized, improved the benefit of rubbish power plant.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides an integrative garbage bin of photovoltaic light and heat which characterized in that: comprises a garbage bin body (1), a photovoltaic photo-thermal roof (2) and a hot air returning pipeline (3); the front end of the garbage bin body (1) is provided with a discharge door (11), and the upper part of the rear end of the garbage bin body (1) is provided with a primary air pumping hole (12); the photovoltaic photo-thermal roof (2) comprises a photovoltaic photo-thermal module (21), an air suction section (22), an air collection section (23), an inverter (24) and a cable (25); the hot air return pipeline (3) comprises a header (31), a return pipe (32), a distribution pipe (33), a fan (34), a thermometer (35) and a flowmeter (36);

the photovoltaic photo-thermal module (21) is laid on the upper surface of the garbage bin body (1); one end of the air suction section (22) is communicated with the lower end of the photovoltaic photo-thermal module (21), and the other end of the air suction section is communicated with the garbage bin body (1); one end of the gas collection section (23) is communicated with the upper end of the photovoltaic photo-thermal module (21), and the other end of the gas collection section is communicated with the header (31); the photovoltaic photo-thermal module (21) is connected with an inverter (24) through a cable (25);

one end of the return pipe (32) is communicated with the header (31), and the other end is communicated with the distribution pipe (33); the distribution pipe (33) is arranged at the lower position in the garbage bin body (1) and used for uniformly distributing hot air into the garbage bin body (1); the return pipe (32) is provided with a fan (34) for pressurizing to overcome on-way resistance, a thermometer (35) for monitoring the temperature of the hot air and a flow meter (36) for monitoring the flow rate of the hot air.

2. The photovoltaic and thermal integrated garbage bin of claim 1, wherein the photovoltaic and thermal module (21) comprises an alloy substrate (212), a phase-change heat storage layer (213), a finned heat exchanger (214), a rubber seal (215) and at least one photovoltaic module (211); photovoltaic module (211) are through the sticky subsides of resistant structure on alloy base plate (212), photovoltaic module (211) bottom and phase change heat accumulation layer (213) through heat conduction silica gel bonding, and phase change heat accumulation layer (213) bottom is connected with fin heat exchanger (214).

3. The photovoltaic and photothermal integrated garbage bin according to claim 2, wherein a rubber seal (215) is provided between the photovoltaic modules (211) for sealing.

4. The photovoltaic and photothermal integrated garbage bin according to claim 2, wherein the alloy substrate (212) is made of aluminum alloy, and the length of the alloy substrate is equal to the width of the garbage bin body (1); the fin heat exchanger (214) is made of aluminum.

5. The photovoltaic and photothermal integrated garbage bin according to claim 2, wherein the phase change material in the phase change heat storage layer (213) is polyethylene glycol 1500 at 40 ℃ or dimethoxy phenylpropionic acid at 48 ℃ and magnesium sulfate heptahydrate at 48.5 ℃.

6. The photovoltaic and photothermal integrated garbage bin according to claim 1, wherein the fan (34) is an axial fan.

7. The photovoltaic and photothermal integrated garbage bin according to claim 1, wherein the air suction section (22) is provided with an air suction opening, and the air suction opening is located above the discharging door (11).