CN217816998U

CN217816998U - Solar heating system utilizing convex lens array

Info

Publication number: CN217816998U
Application number: CN202221861751.9U
Authority: CN
Inventors: 袁流潇
Original assignee: Shanghai Yiyade Technology Co ltd
Current assignee: Shanghai Yiyade Technology Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-11-15
Anticipated expiration: 2032-07-19

Abstract

The utility model discloses an utilize solar heating system of convex lens array belongs to the solar photothermal utilization field. The problem that the system that utilizes solar heating is with high costs and the energy consumption is big to current, the utility model provides an utilize solar heating system of convex lens array, it is including utilizing convex lens to carry out the heat collection to the sunlight and gather the ability device, gather the export of ability device and the entry intercommunication of storage water tank, the export of storage water tank is respectively through the import of pipeline with gathering the ability device, heating system's import intercommunication, heating system's export is passed through pipeline and storage water tank intercommunication, it is provided with temperature-detecting device on the pipeline of export and storage water tank entry intercommunication to gather the ability device. The utility model utilizes the convex lens to acquire solar thermal energy, reduces air pollution and discharge amount of greenhouse gases, and the water storage tank is connected with the energy collecting device and the heating device in two ways, thereby increasing the recycling function of the whole system, reducing energy consumption and saving cost; the temperature detection device increases safety.

Description

Solar heating system utilizing convex lens array

Technical Field

The utility model belongs to the technical field of the solar photothermal utilization, more specifically say, relate to an utilize solar heating system of convex lens array.

Background

The solar photo-thermal heating system is a solar photo-thermal utilization mode which collects and utilizes clean and pollution-free solar energy and then transfers the solar photo-thermal energy to indoor floor heating or radiator heating through medium exchange such as water and the like. The mode not only utilizes the solar thermal energy with the maximum efficiency and can save the cost by more than 40-60%, but also avoids the pollution of stone energy such as coal combustion, gas combustion and the like to the environment, and provides a clean, warm and comfortable living space for users. Currently, solar heating can be mainly divided into two forms: 1. passive solar heating system: the passive solar heating is that through the reasonable arrangement of the building orientation and the surrounding environment and the proper selection of the building materials and the structure, the building can fully absorb and store the solar radiation energy in winter, thereby achieving the purpose of heating. The system has simple structure, low cost and easy management, but has large heat change fluctuation, low heat exchange efficiency and poor heat preservation effect, and is difficult to realize continuous heating at night or in rainy days; 2. active solar heating system: the heat collecting system converts solar energy into heat energy, and the obtained heat energy is transferred into the heat accumulator or the heating room through the heat transfer working medium, so that the heating purpose is achieved. Compare in passive form solar heating, its heat supply operating mode is more stable, but simultaneously, investment cost also increases to and because do not have the temperature monitoring system, can't the accurate judgement temperature condition, cause the energy consumption increase.

Corresponding improvements are also made to the above problems, for example, chinese patent application No. CN201120474212.5, published as 7/11/2012, discloses a solar heating apparatus including: the solar water heater comprises an upper water tank, a lower water tank, a heat collecting glass tube, a glass inner tube, a circulating water pump, a water inlet tube, a water outlet tube and a circulating water tube, wherein a convex lens is arranged on the tube wall of the heat collecting glass tube, the glass inner tube is uniformly arranged at the focus of the convex lens in the heat collecting glass tube and is respectively communicated with the upper water tank and the lower water tank, two ends of the heat collecting glass tube are respectively fixed on the upper water tank and the lower water tank to form the solar water heater, the water inlet tube, the circulating water tube and the lower water tank are connected, the circulating water tube is provided with the circulating water pump, one end of the water outlet tube is connected with the upper water tank, and the other end of the water outlet tube is connected with a shower and heating device. The disadvantages of the patent are that: although the utilization rate of the light energy can be greatly improved, the whole automation degree is lower, and the use is more complicated.

Also like chinese patent application No. CN201820115361.4, published as 2018, 8, 31, this patent discloses a solar heating device, which comprises a heat exchanger, a supply tank, a return water tank, a heat storage tank, and a hot water tank, wherein the heat exchanger is installed between the supply tank and the return water tank and is communicated through a pipeline, an input end of the supply tank is connected with an outlet of a heating pipeline, and an inlet of the heating pipeline is communicated with the heat storage tank. The output end of the water return tank is communicated with the heat storage tank, and the hot water tank is communicated with the heat storage tank. The heat exchanger is internally provided with a plurality of spiral heat exchange tubes which are mutually clung to each other in the vertical direction and are arranged side by side. The disadvantages of the patent are that: the situation of resource waste is easy to exist due to lack of safety monitoring.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The problem that the system cost is high and the energy consumption is big to current utilization solar heating, the utility model provides an utilize solar heating system of convex lens array. The utility model utilizes the convex lens to acquire solar thermal energy, reduces air pollution and the discharge amount of greenhouse gases, and the water storage tank is connected with the energy collecting device and the heating device in two ways, thereby increasing the recycling function of the whole system, reducing energy consumption and saving cost; the temperature detection device increases the safety, the whole system is simple in layout, and the cost is reduced while the solar thermal energy is fully utilized.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides an utilize solar heating system of convex lens array, includes that the convex lens carries out the energy device that heat was collected to the sunlight, the export of gathering the energy device and the entry intercommunication of storage water tank, the export of storage water tank communicates with the import of gathering the energy device, heating system's import through pipeline and storage water tank respectively, heating system's export is through pipeline and storage water tank intercommunication, is provided with temperature-detecting device on the pipeline of gathering the energy device export and storage water tank entry intercommunication.

Furthermore, the energy collecting device comprises a convex lens array formed by a plurality of convex lenses which are connected in series or in parallel, and a metal plate for absorbing heat energy of the convex lens array, wherein the upper surface of the metal plate is arranged on a focal plane of the convex lens array, the lower surface of the metal plate is provided with a heat collecting pipe and heat conducting fins, the heat collecting pipe is provided with a medium flowing channel, a heat absorbing medium is arranged in the medium flowing channel, an outlet of the medium flowing channel is communicated with an inlet of the water storage tank, and the heat conducting fins are arranged on the periphery of the heat collecting pipe.

Furthermore, the convex lens array is connected with the metal plate through an adjusting device, and the upper surface of the metal plate is overlapped with the focal plane formed by the light condensation of the convex lens array through the adjusting device.

Furthermore, the convex lens in the convex lens array is one of a spherical biconvex lens, an aspherical biconvex lens, a spherical plano-convex lens and an aspherical plano-convex lens.

Further, the surface of the metal plate is coated with a spectrally selective absorbing coating.

Furthermore, a glass cover plate is arranged above the convex lens array and connected with the metal plate.

Furthermore, still be provided with the cooling pipe on the storage water tank, the cooling pipe communicates with external cooling water, and is provided with the solenoid valve on the cooling pipe.

Furthermore, the water storage tank is also provided with an auxiliary heating device which is used for heating the water in the water storage tank to a set temperature.

3. Advantageous effects

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

(1) The acquisition of the heat energy of the energy collecting device in the utility model does not depend on the combustion of fossil energy such as coal, natural gas and the like, but utilizes the convex lens to acquire the solar heat energy so as to reduce the air pollution and the emission of greenhouse gas; the energy collecting device absorbs heat energy and heats a medium, the medium enters the water storage tank for storage, the heating device is communicated with the water storage tank to realize heating, and the water storage tank is connected with the energy collecting device and the heating device in a bidirectional manner, so that the recycling function of the whole system is increased, the energy consumption is reduced, and the cost is saved; meanwhile, the arrangement of the temperature detection device effectively increases the safety of the whole system, is convenient for monitoring the medium at the outlet of the energy collecting device in real time and is convenient for subsequent actions; the whole system is simple in layout, solar thermal energy is fully utilized, and meanwhile cost input is reduced;

(2) The energy collecting device in the utility model forms an array by arranging a plurality of convex lenses to absorb sunlight heat energy, and overlaps the upper surface of the metal plate with the focal plane of the convex lens array, so that the sunlight heat energy absorbed by the convex lens array can be absorbed by the metal plate, then the metal plate directly transfers and exchanges the heat energy to the heat collecting tube on the lower surface of the metal plate, heats a heat absorbing medium in the heat collecting tube and then enters the water storage tank; the arrangement of the heat-conducting fins can further enlarge the contact area between the metal plate and the heat-collecting tube, and improve the efficiency of light heat energy transfer; the whole structure is simple, and the assembly is easy;

(3) The utility model adopts the adjusting device to connect the convex lens array and the metal plate, and the arrangement of the adjusting device can further ensure that the focal plane of the convex lens array is completely overlapped with the upper surface of the metal plate, thereby ensuring the heat absorption effect; the surface of the metal plate is coated with the spectral selective absorption layer, so that the heat energy absorption effect of the metal plate can be further ensured; the arrangement of the glass cover plate above the convex lens array can protect the convex lenses in the convex lens array, avoid the interference of external environmental factors, ensure the smooth working process of the convex lenses and prolong the service life of the convex lenses;

(4) The utility model is also provided with a cooling pipeline on the water storage tank, which avoids the medium in the water storage tank from having too high temperature and not conforming to the requirement of the heating device on the temperature, and improves the applicability and compatibility of the whole system; meanwhile, the water storage tank is also provided with an auxiliary heating device, and when the water temperature in the water storage tank cannot meet the requirement of the heating device on the temperature due to environmental influences such as rainy days or nighttime, the auxiliary heating device carries out secondary heating on a medium in the water storage tank so as to ensure that the continuity and the temperature of heat supply meet the requirement.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic plan view of the energy concentrating device of the present invention;

FIG. 3 is a schematic plan view of a metal plate in the concentrator;

FIG. 4 isbase:Sub>A schematic view of the structure A-A of FIG. 3;

FIG. 5 is a schematic view of the structure B-B in FIG. 3.

In the figure: 1. an energy gathering device; 11. a metal plate; 12. a heat collecting pipe; 121. an inlet; 122. an outlet; 13. a fixed block; 14. protecting the corner; 15. a heat conductive fin; 16. a short-direction side plate; 17. a long side plate; 18. vacuumizing a tube; 19. a variable cross-section screw; 110. a convex lens array; 111. a glass cover plate; 112. a focus spot; 2. a water storage tank; 3. a circulating pump I; 4. an electromagnetic valve; 5. an auxiliary heating device; 6. a circulating pump II; 7. a heating device; 8. a temperature detection device.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Example 1

As shown in fig. 1, a solar heating system using a convex lens array includes a concentrator 1 for collecting heat of sunlight using convex lenses. It is explained here that the energy concentrating device 1 collects the heat energy of the sunlight by one time by using the convex lens, and the energy concentrating device 1 is provided with a heat absorbing medium therein, in this embodiment, the heat absorbing medium may be water, and the energy concentrating device 1 can heat the water of the heat absorbing medium therein after absorbing the heat energy, and then performs one collection process on the heated water. The outlet of the energy collecting device 1 is communicated with the inlet of the water storage tank 2, namely the medium water in the energy collecting device 1 flows to the inlet of the water storage tank 2. The outlet of the water storage tank 2 is respectively communicated with the inlet of the energy collecting device 1 and the inlet of the heating device 7 through pipelines. Specifically, 2 exports of storage water tank are provided with circulating pump I3 and circulating pump II6, and the export of storage water tank 2 and the entry that gathers in the device 1 pass through circulating pump I3 intercommunication for the hydroenergy of 2 insides of storage water tank can circulate and enter into gathering in the device 1 and heat the back and flow into storage water tank 2 again, so the hydroenergy of circulation setting in making storage water tank 2 can satisfy follow-up heating installation 7's requirement in real time. The outlet of the water storage tank 2 is communicated with the inlet of the heating device 7 through a circulating pump II6, so that the water in the water storage tank 2 flows into the heating device 7. In this embodiment, the heating device 7 can be a device for heating floor or a radiator and the like by means of heat of water, and the hot water in the water storage tank 2 enters the floor heating coil pipe and radiates heat uniformly to the indoor from the ground. The export of heating installation 7 passes through pipeline and storage water tank 2 intercommunication, and the export of heating installation 7 and storage water tank 2 communicate in this embodiment, can carry out a circulation to the water resource that flows into to heating installation 7 and retrieve, avoids the waste of water resource, and accessible circulating pump I3 enters into after the water after the heating installation 7 cooling enters into in the storage water tank 2 and gathers and heat in the device 1 again. The setting of circulation water route makes the lower waste of just avoiding the resource of overall cost. Simultaneously this embodiment is provided with temperature-detecting device 8 on gathering the pipeline of 1 export of device and 2 entry intercommunications of storage water tank, and temperature-detecting device 8 can be temperature sensor, and temperature-detecting device 8's setting can be effectively carry out the temperature to gathering the medium in 1 exit of device and carrying out temperature detection to can accurately judge gather the temperature condition in 1 and the storage water tank 2 of device, increase the security and the promptness of whole process. Meanwhile, the water storage tank 2 can be also provided with a temperature sensor, and the temperature sensor arranged on the water storage tank 2 further ensures the accuracy of the water temperature in the water storage tank 2 due to the heat loss between the energy collecting device 1 and the water storage tank 2.

The acquisition of the heat energy of the energy gathering device 1 in the utility model does not depend on the fossil energy such as burning coal, natural gas and the like, but utilizes the convex lens to acquire the solar heat energy so as to reduce the air pollution and the emission of greenhouse gas; the energy collecting device 1 absorbs heat energy and heats a medium, the medium enters the water storage tank 2 for storage, the heating device 7 is communicated with the water storage tank 2 to realize heating, and the water storage tank 2 is connected with the energy collecting device 1 and the heating device 7 in a bidirectional manner, so that the recycling function of the whole system is increased, the energy consumption is reduced, and the cost is saved; meanwhile, the arrangement of the temperature detection device 8 effectively increases the safety of the whole system, is convenient for monitoring the medium at the outlet of the energy collecting device 1 in real time and is convenient for subsequent actions; the whole system layout is simple, and the investment of cost is reduced while the solar thermal energy is fully utilized.

Specifically, in the present embodiment, as shown in fig. 2, fig. 3, fig. 4 and fig. 5, the energy concentrating device 1 includes a convex lens array 110 formed by a plurality of convex lenses connected in series or in parallel, and the focal points of the plurality of convex lenses connected in series or in parallel are located on the same plane, which is the focal plane of the convex lens array 110. The problem that the single lens is thick and heavy, the cost is high and only one focus cannot collect continuous light caused by adopting the single convex lens to realize the collection of the heat energy of the sunlight all the day after the change of the form of the convex lens array 110. Therefore, the convex lens array 110 can have a higher light-gathering ratio, so that the working and operating temperature of subsequent heat exchange is higher, and the utilization of medium-high temperature solar thermal energy can be realized with high parameters and high efficiency. Specifically, the convex lens may be one of a spherical biconvex lens, an aspherical biconvex lens, a spherical plano-convex lens, and an aspherical plano-convex lens. When the biconvex lens focuses solar parallel light and has large spherical aberration, large spot diameter and unsatisfactory energy collection effect, the aspheric plano-convex lens can be used as a technical means for realizing higher light collection ratio, smaller spherical aberration and higher working medium operation temperature. The metal plate 11 for absorbing the heat energy of the convex lens array 110, specifically, the surface of the metal plate 11 is coated with a spectrum selective absorption coating, and the coating has high absorption and low reflection of the photothermal radiation with the solar occupancy ratio of 95% and the wavelength of 0.3-2.5 μm, so that the efficiency of the metal plate 11 for absorbing the heat energy of the refracted and focused light of the convex lens array 110 is effectively improved, the heat radiation loss of the metal plate 11 to the surrounding environment is reduced, and the photothermal utilization efficiency of the whole energy collecting device 1 is improved. The convex lens array 110 is used for refracting and focusing incident solar parallel light to form a plurality of focus light spots 112 with high temperature of 450-1500 ℃ on the upper surface of the metal plate 11, and the upper surface of the metal plate 11 is arranged on a focal plane of the convex lens array 110. The lower surface of the metal plate 11 is provided with a heat collecting pipe 12 and a heat conducting fin 15, the heat collecting pipe 12 is provided with a medium flow channel, a heat absorbing medium is arranged in the medium flow channel, and an outlet of the medium flow channel is communicated with an inlet of the water storage tank 2. Specifically, the heat collecting tube 12 is a serpentine heat collecting tube, one end of the serpentine heat collecting tube is an inlet 121, the other end of the serpentine heat collecting tube is an outlet 122, a medium flowing channel is arranged inside the serpentine heat collecting tube, a heat absorbing medium (water) enters the serpentine heat collecting tube through the inlet 121 and then flows out from the outlet 122 after being heated, and the outlet 122 is communicated with the inlet of the water storage tank 2. The heat conducting fins 15 are arranged around the heat collecting tube 12, specifically, the heat collecting tube 12 is surrounded by the heat conducting fins 15, and the heat collecting tube 12 is laid in the dense heat conducting fins 15, so that the contact area between the metal plate 11 and the heat collecting tube 12 is enlarged, and the efficiency of transmitting the light heat energy refracted and focused by the convex lens array 110 to the heat collecting tube 12 through the heat absorbing medium is improved. And heat conduction fin 15 wraps up thermal-collecting tube 12 and fixes the lower surface at metal sheet 11, and its periphery is enclosed by welding short to curb plate 16 and the long to curb plate 17 at metal sheet 11 edge and closes, forms sealed cavity structure to form the intermediate layer of vacuum or gas such as filling argon, helium between convex lens, avoid water vapor atomization to bring the influence to convex lens's transmissivity, usable evacuation pipe 18 carries out the air pumping operation, guarantees convex lens array 110's vacuum.

The working principle of the energy gathering device 1 is as follows: the parallel light of the sun irradiates the convex lens array 110, each convex lens in the convex lens array 110 refracts and focuses the sunlight on the corresponding focal spot 112 on the upper surface of the metal plate 11 to generate high-temperature heat energy of 450-1500 ℃, the metal plate 11 absorbs the heat energy and then directly transfers or exchanges the heat energy to the heat collecting tube 12 or indirectly transfers the heat energy to the heat collecting tube 12 through the heat conducting fin 15, and then transfers the heat energy to a heat absorbing medium entering from the inlet 121 of the heat collecting tube 12, and the heat absorbing medium is heated and then carries the heat energy to exit from the outlet 122 of the heat collecting tube 12 to enter the water storage tank 2 for storage for subsequent use. The energy collecting device 1 is simple in overall structure, easy to assemble and capable of well collecting and utilizing solar thermal energy.

Example 2

Basically as in embodiment 1, in order to further ensure the usability of the energy collecting device 1, in this embodiment, the convex lens array 110 is connected to the metal plate 11 through an adjusting device, and the upper surface of the metal plate 11 is overlapped with the focal plane formed by the light collected by the convex lens array 110 through the adjusting device. The distance between the convex lens array 110 and the upper surface of the metal plate 11 can be changed by the arrangement of the adjusting device, the upper surface of the metal plate 11 is enabled to be overlapped with the focal plane of the convex lens array 110, and the problem of poor heat absorption effect caused by the fact that the two surfaces are not overlapped in the using process or the transportation process is solved. Specifically, the adjusting device comprises a fixing block 13 arranged on the metal plate 11, a mounting hole is formed in the fixing block 13, a variable cross-section screw 19 is arranged in the mounting hole, the variable cross-section screw 19 is connected with the convex lens array 110, specifically, the convex lens array 110 is arranged on the shell, the variable cross-section screw 19 is connected with the shell, and the distance between the upper surface of the metal plate 11 and a focal plane formed by condensing the light of the convex lens array 110 is changed by changing the screwing-in depth of the variable cross-section screw 19 in the fixing block 13.

Furthermore, in this embodiment, a glass cover plate 111 is further disposed above the convex lens array 110, the glass cover plate 111 is connected to the metal plate 11, and the glass cover plate 111 can protect the convex lenses in the convex lens array 110, so as to prevent the convex lenses from being interfered by external environmental factors, ensure the smooth operation of the convex lenses, and prolong the service life of the convex lenses. The metal plate 11 is rectangular, the corner protectors 14 are welded at four corners of the rectangle, and the corner protectors 14 are provided with threaded holes for fixing with the housing of the convex lens array 110. And glass wool or rock wool is filled outside the inner metal plate 11 of the corner protector 14 to reduce heat loss.

Example 3

Basically, with embodiment 2, in order to further increase the compatibility and the suitability of whole heating system, still be provided with the cooling pipe on storage water tank 2 in this embodiment, cooling pipe and external cooling water intercommunication are provided with solenoid valve 4 on the cooling pipe. The cooling pipeline communicates with external cooling water, make external cooling water pour into storage water tank 2 as required into, carry out a cooling to the medium in the storage water tank 2, avoid entering into the too high can not supply heating system 7 to use of medium temperature in storage water tank 2 when gathering the device 1, and solenoid valve 4's setting has then further increased the convenience of regulation, make the cooling water that enters into in the storage water tank 2 can carry out ration or the control of constant speed, guarantee the smooth and easy of regulation. Simultaneously still further, still be provided with auxiliary heating device 5 on storage water tank 2, auxiliary heating device 5 is used for heating to the settlement temperature to the water in the storage water tank 2, and auxiliary heating device 5 can be for setting up the heater strip in storage water tank 2 inside or for setting up the heater in storage water tank 2 inside, does not make the structural improvement to auxiliary heating device 5 because of this embodiment, also does not belong to the core improvement point of this application, consequently as long as can realize carrying out the auxiliary heating device 5 of heating to the medium (water) in storage water tank 2 inside and all can use in this application. The auxiliary heating device 5 is arranged so that when the water temperature in the water storage tank 2 does not meet the requirement of the heating device 7 on the temperature due to environmental influences such as rainy days or nights, the medium in the water storage tank 2 is secondarily heated through the auxiliary heating device 5 to ensure that the continuity and the temperature of heat supply meet the requirement. The arrangement of the cooling pipe and the auxiliary heating device 5 improves the applicability and compatibility of the whole system, so that the heating of the heating device 7 does not only depend on the energy collecting device 1, and the purpose that the heating cannot be realized due to the damage of the energy collecting device 1 is avoided.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims

1. A solar heating system using a convex lens array is characterized in that: the sunlight energy collecting device comprises an energy collecting device (1) for collecting heat of sunlight by utilizing a convex lens, wherein an outlet of the energy collecting device (1) is communicated with an inlet of a water storage tank (2), an outlet of the water storage tank (2) is communicated with an inlet of the energy collecting device (1) and an inlet of a heating device (7) through pipelines respectively, an outlet of the heating device (7) is communicated with the water storage tank (2) through a pipeline, and a temperature detecting device (8) is arranged on the pipeline for communicating the outlet of the energy collecting device (1) with the inlet of the water storage tank (2).

2. The solar heating system using a convex lens array according to claim 1, wherein: the energy gathering device (1) comprises a convex lens array (110) formed by a plurality of convex lenses which are connected in series or in parallel, a metal plate (11) absorbing heat energy of the convex lens array (110), the upper surface of the metal plate (11) is arranged on a focal plane of the convex lens array (110), the lower surface of the metal plate (11) is provided with a heat collecting pipe (12) and heat conducting fins (15), a medium flow channel is arranged on the heat collecting pipe (12), a heat absorbing medium is arranged in the medium flow channel, an outlet of the medium flow channel is communicated with an inlet of a water storage tank (2), and the heat conducting fins (15) are arranged around the heat collecting pipe (12).

3. The solar heating system using a convex lens array according to claim 2, wherein: the convex lens array (110) is connected with the metal plate (11) through an adjusting device, and the upper surface of the metal plate (11) is overlapped with a focal plane formed by light condensation of the convex lens array (110) through the adjusting device.

4. A solar heating system using a convex lens array according to claim 2 or 3, wherein: the convex lens in the convex lens array (110) is one of a spherical biconvex lens, an aspheric biconvex lens, a spherical plano-convex lens and an aspheric plano-convex lens.

5. The solar heating system using a convex lens array according to claim 2, wherein: the surface of the metal plate (11) is coated with a spectrally selective absorbing coating.

6. A solar heating system using a convex lens array according to claim 2 or 5, wherein: a glass cover plate (111) is further arranged above the convex lens array (110), and the glass cover plate (111) is connected with the metal plate (11).

7. The solar heating system using a convex lens array according to claim 1, wherein: still be provided with the cooling pipe on storage water tank (2), the cooling pipe is with external cooling water intercommunication, and is provided with solenoid valve (4) on the cooling pipe.

8. A solar heating system using a convex lens array according to claim 1 or 7, wherein: the water storage tank (2) is further provided with an auxiliary heating device (5), and the auxiliary heating device (5) is used for heating water in the water storage tank (2) to a set temperature.