CN212538326U - Solar water heater with reflector - Google Patents

Abstract

The application relates to a solar water heater with a reflector, comprising: the solar water heater comprises a base frame, a water tank supported by the base frame, and a plurality of heat collecting pipes supported by the base frame and arranged in parallel; still the bearing has on the bed frame: each reflector is uniformly distributed on the radial side part of one corresponding heat collecting pipe and can rotate around the axis of the heat collecting pipe, and each reflector is provided with a reflecting surface which faces the corresponding heat collecting pipe; the driving device is in transmission connection with each reflector to drive each reflector to synchronously rotate; the drive device includes: each synchronous wheel is coaxially and movably sleeved outside the corresponding heat collecting pipe and is fixedly connected with the corresponding reflector; the motor is fixed with the bed frame to this motor passes through the hold-in range and is connected with a plurality of synchronizing wheel transmissions, in order to drive a plurality of synchronizing wheel synchronous rotations. The reflecting angle of each reflecting plate on the solar water heater can be automatically adjusted, and other vulnerable parts cannot be interfered in the adjusting process.

Description

Solar water heater with reflector

Technical Field

The application relates to the field of solar water heaters, in particular to a solar water heater with a reflector.

Background

The solar water heater is a heating device for converting solar energy into heat energy, and heats water from low temperature to high temperature so as to meet the requirement of hot water in life and production of people.

The solar water heater mainly comprises heat collecting pipes, a water tank, a base frame and other related parts, and solar energy is converted into heat energy mainly by the heat collecting pipes. The heat collecting pipe mainly comprises a vacuum pipe consisting of an inner pipe and an outer pipe which are coaxially arranged, wherein a vacuum annular cavity is arranged between the inner pipe and the outer pipe, and a heat absorbing coating is attached to the pipe wall of the inner pipe.

In order to facilitate assembly and fully exert the performance of each heat collecting pipe, each heat collecting pipe on the solar water heater needs to be arranged at a certain distance. Sunlight is parallel light, and the heat absorption coating is only arranged on the tube wall of the inner tube, so the effective light receiving area of each heat collecting tube is only the radial projection area of the inner tube. Therefore, the effective light receiving area of the solar water heater is less than one fifth of the appearance area of the solar water heater, and sunlight which is irradiated between the heat collecting pipes and between the inner pipe and the outer pipe cannot be utilized.

In this regard, it is conceivable to install a reflector on the backlight side of the heat collecting tubes, so that sunlight emitted between the heat collecting tubes and between the inner tube and the outer tube is reflected to the heat collecting tubes, especially the inner tube of the heat collecting tubes, by the reflector. However, the positions of the reflector, the base frame and the heat collecting tube are relatively fixed, and the incident angle of sunlight changes all the time in one day. No matter how to improve the shape of the reflector, the reflector with fixed position and angle cannot reflect more sunlight which is emitted to the heat collecting pipes at each time interval. The reflector can only give full play to the efficacy in a specific time period of a day, and the light rays reflected to the heat collecting tube in other time periods are few.

Based on this, the applicant thinks that the traditional fixed reflector is changed into the movable reflector, so as to utilize the reflector with adjustable angle to reflect all the sunlight which is emitted to the outer side of the heat collecting tube in any time period in one day, thereby improving the photo-thermal conversion efficiency of the solar water heater.

However, the angle adjustment of the reflector cannot be completely dependent on manual operation, and how to arrange the driving device to drive each reflector to move synchronously is a technical problem to be solved by the present application.

Disclosure of Invention

The technical problem that this application will solve is: the solar water heater with the light reflecting plates is provided, and the light reflecting angles of the light reflecting plates on the solar water heater can be automatically adjusted.

The technical scheme of the application is as follows:

a solar water heater with a reflector comprises:

a base frame, and

a water tank supported by the base frame, and

a plurality of heat collecting pipes supported by the base frame and arranged in parallel with each other;

still the bearing has on the bed frame:

each reflector is uniformly distributed on the radial side part of one corresponding heat collecting pipe and can rotate around the axis of the heat collecting pipe, and each reflector is provided with a reflecting surface which faces the corresponding heat collecting pipe; and

the driving device is in transmission connection with each reflector to drive each reflector to synchronously rotate;

the driving device includes:

each synchronous wheel is coaxially and movably sleeved outside the corresponding heat collecting pipe and is fixedly connected with the corresponding reflector; and

the motor is fixed with the base frame and is in transmission connection with the synchronous wheels through synchronous belts so as to drive the synchronous wheels to synchronously rotate.

On the basis of the technical scheme, the application also comprises the following preferable scheme:

each synchronous wheel is suspended and sleeved outside a corresponding heat collecting pipe.

Each reflector is a strip-shaped plate which linearly extends along the length direction of a corresponding heat collecting pipe.

Each reflector is a curved plate, and the reflecting surface of each reflector is an inwards concave curved surface.

Each reflector is an arc panel, and the reflecting surface of each reflector is an inwards concave arc surface.

And a supporting bearing is respectively arranged between the two ends of the length of each reflector and the base frame, and each of the plurality of synchronizing wheels is fixedly sleeved on the bearing inner ring of the corresponding supporting bearing.

And the bearing outer ring of each supporting bearing is fixedly connected with the base frame, and the bearing inner ring of each supporting bearing is fixedly connected with the corresponding reflector.

And one side of each reflecting plate, which deviates from the corresponding heat collecting tube, is fixedly provided with a photovoltaic plate, and each photovoltaic plate is provided with a photovoltaic working surface which deviates from the corresponding heat collecting tube.

The photovoltaic panel and the reflector panel are fixedly connected to each strip-shaped bracket.

The reflector is a glass reflector.

The application can realize the following beneficial effects:

1. this application arranges a reflector panel at each thermal-collecting tube lateral part of solar water heater to set up and drive each reflector panel by motor drive's synchronizing wheel and rotate in order to adjust the launch angle to the sunlight, thereby guaranteed that each thermal-collecting tube of solar water heater can both acquire sufficient illumination in any period of one day, show the light and heat conversion efficiency who promotes the water heater.

2. The synchronous wheel is sleeved on the periphery of the heat collecting pipe in a hanging manner, so that the outer peripheral surface of the heat collecting pipe is not rubbed during rotation, and the service life of the heat collecting pipe is ensured.

3. A supporting bearing is arranged between the reflector and the base frame, the heat collecting tube does not bear the weight of the reflector and is not a rotary supporting body of the reflector, and a bearing carrier and a rotary carrier of the heat collecting tube are both the base frame. The weight and the rotation friction force of the reflector cannot be applied to the heat collecting tube, so that the service life of the heat collecting tube is further ensured.

4. The photovoltaic panel is fixedly arranged on the backlight side of the reflector panel, the switching between photovoltaic and photo-thermal can be realized, the high-efficiency utilization mode of solar energy is changed, the photovoltaic power generation and the photo-thermal heating are combined, the power generation or the heating can be selected according to the requirement, the full utilization of the solar energy is realized, and the photovoltaic panel has innovation significance on the ecological development mode of energy conservation, no pollution and sustainable development.

5. The reflector plate adopts purpose-made glass reflector structure, has abandoned the reflection of light cladding material of traditional reflector side of being shaded, pastes the reflective membrane and forms the glass reflector of novel structure and uses it on solar water heater with reflection sunlight to thermal-collecting tube, is positive profitable on one side of transparent glass: although the traditional glass reflector has excellent light reflecting performance and weather resistance, the traditional glass reflector has poor strength and is easy to break (especially when the traditional glass reflector is made into a curved mirror which cannot be tempered). This application pastes the reflective membrane but not set up reflection of light cladding material in transparent glass one side, has promoted the bulk strength of glass reflector. This is because the reflective film has a certain impact resistance and is not broken by light touch as in the case of transparent glass. Moreover, even if the transparent glass of the reflector is broken by external force, the broken transparent glass still adheres to the reflecting film on the back side and is basically kept flush with the transparent glass nearby, so that the transparent glass is only broken and cannot collapse, the reflecting angle of the transparent glass cannot be greatly changed after the transparent glass is broken, and the received sunlight can still be reflected to the heat collecting tube. And replace traditional reflection of light cladding material with the reflective membrane, during the actual application, the reflective surface of reflective membrane is protected by transparent glass laminating, and the reflective membrane only shady face exposes in the environment, and the foreign object only can the fish tail shady face, and the reflective performance of reflective membrane is not influenced.

6. The reflecting plate made of the glass reflecting mirror in another structural form comprises transparent glass and a reflecting coating layer of the traditional glass reflecting mirror, and a back plate which is not easy to crack, particularly a back plate with an explosion-proof membrane structure, is stuck and fixed on the back light surface of the reflecting plate, so that the defects that the traditional glass reflecting mirror is low in structural strength and easy to damage and hurt people are overcome. Even if the transparent glass of the glass reflector is broken due to external force, the broken transparent glass still adheres to the back plate at the back side and is basically kept flush with the transparent glass nearby, so that the transparent glass is only broken and cannot collapse, the reflecting angle of the broken transparent glass cannot be greatly changed, and the received sunlight can still be reflected to the heat collecting tube. In addition, the back plate can also protect the reflective coating on the inner side of the back plate from being damaged by foreign objects, and a protective layer is not required to be specially arranged on the reflective coating as the traditional reflector.

7. The adhesives used for bonding and fixing the transparent glass and the reflective film and for bonding and fixing the reflective film and the back plate are EVA hot melt adhesives. When the hot-melt EVA film is implemented, the hot-melt EVA film is clamped between the two corresponding structural layers, certain pressure is applied, the two structural layers are tightly connected together after the hot-melt EVA film is cooled and solidified, the process is convenient to implement, and the connection strength is high. Moreover, the bonding process can form a continuous and compact adhesive layer with explosion-proof performance. Even if the transparent glass of the glass reflector is broken by external force, the broken transparent glass still adheres to the adhesive layer (and the reflecting film) on the back side and is basically flush with the transparent glass nearby, so that the reflector can only be broken without collapsing, the reflecting angle of the reflector cannot be greatly changed after the reflector is broken, and the received sunlight can still be reflected to the heat collecting tube.

Therefore, the reflective film and the adhesive layer have good explosion-proof performance, the reflective film has both reflection and explosion-proof functions, the adhesive layer does not need to be thick, and the using amount of the adhesive can be reduced to a certain extent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.

Fig. 1 is a schematic structural view of a glass reflector of a solar water heater at a first working angle according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a glass reflector of a solar water heater at a second working angle according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a glass reflector of a solar water heater at a third working angle according to an embodiment of the present application.

Fig. 4 is an exploded schematic structural diagram of a main body structure of a solar water heater according to an embodiment of the present application.

Fig. 5 is a schematic diagram of relative positions of a heat collecting tube and a reflector in an embodiment of the present application.

Fig. 6 is a first exploded view of the upper reflector support arm according to an embodiment of the present disclosure.

Fig. 7 is a second exploded view of the upper reflector support arm according to an embodiment of the present invention.

Fig. 8 is a first exploded view of a lower reflector support arm according to an embodiment of the present disclosure.

Fig. 9 is a second exploded view of the lower reflector support arm according to an embodiment of the present invention.

Fig. 10 is a schematic view of a connection structure of the heat collecting tube, the water tank and the supporting arm of the reflector in an embodiment of the present application.

Fig. 11 is an enlarged view of the X1 portion of fig. 10.

Fig. 12 is an enlarged view of the X2 portion of fig. 10.

Fig. 13 is a schematic cross-sectional view illustrating a heat collecting tube and a reflector in an embodiment of the present application.

Fig. 14 is an enlarged view of the X3 portion of fig. 13.

Fig. 15 is a schematic structural diagram of a solar water heater in the photovoltaic power generation mode in the second embodiment of the present application.

Fig. 16 is a schematic structural diagram of a solar water heater in a photothermal heating mode according to a second embodiment of the present application.

Fig. 17 is an exploded schematic view of a main body of a solar water heater according to a second embodiment of the present application.

Fig. 18 is a schematic diagram of relative positions of the heat collecting tube, the photovoltaic panel and the reflector in the second embodiment of the present application.

Fig. 19 is a schematic cross-sectional view of a heat collecting tube and a light reflecting plate in the third embodiment of the present application.

Fig. 20 is an enlarged view of the X4 portion of fig. 19.

Fig. 21 is a schematic cross-sectional view of a heat collecting tube and a light reflecting plate in the fourth embodiment of the present application.

Fig. 22 is an enlarged view of the X5 portion of fig. 21.

Wherein:

1-pedestal, 2-water tank, 201-heat collecting pipe plug hole, 3-heat collecting pipe, 4-reflector, 401-transparent glass, 402-reflective film, 403-adhesive, 404-backboard, 405-reflective coating, 5-reflector supporting arm, 501-trepanning, 5 a-supporting arm front cover, 5 b-supporting arm rear cover, 6-supporting bearing, 601-bearing outer ring, 602-bearing inner ring, 7-synchronous wheel, 8-motor, 9-synchronous belt, 10-bottom support, 11-rubber dust ring, 12-strip bracket and 13-photovoltaic panel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

Embodiments of the present application will now be described with reference to the accompanying drawings.

The first embodiment is as follows:

fig. 1 to 14 show a preferred embodiment of the solar water heater of the present application, which, like some conventional solar water heaters, also includes a base frame 1, a water tank 2 supported on the base frame, and a plurality of (in this embodiment, eight) heat collecting pipes 3. The water tank 2 is fixed to the base frame 1 and has a water inlet port and a water outlet port, and the water inlet port and the water outlet port are respectively connected to a water inlet pipeline and a water outlet pipeline during practical application, so that flowing water is introduced into the water tank 2. One end of each heat collecting pipe 3 is inserted into the water tank 2 (the matching part is sealed and does not leak water). For convenient processing and assembly, the heat collecting pipes 3 are arranged in the same plane at equal intervals, and the heat collecting pipes 3 are arranged in parallel. The base frame 1 serves as a support carrier for the entire solar water heater, for carrying the weight of the aforementioned water tank 2 and heat collecting pipe 3, as well as the various components described below, and defines the aforementioned plane. Of course, in some other embodiments of the present application, the heat collecting tubes 3 may be arranged at random intervals, and are not necessarily in the same plane.

Different from the traditional solar water heater: the base frame 1 is also supported with eight reflector panels 4, the eight reflector panels 4 are arranged on the radial side parts of the eight heat collecting tubes 3 in a one-to-one correspondence manner, and each reflector panel 4 can rotate around the axis of the corresponding heat collecting tube 3. That is, the reflector 4 is rotatably arranged instead of being fixedly arranged on the water heater, and the rotation axis of each reflector 4 on the base frame 1 is exactly the tube axis of the corresponding heat collecting tube 3.

During operation, the angle of the reflector plate 4 can be adjusted in real time according to the incident angle of sunlight, so that the sunlight rays which pass through the outer side of the heat collecting tube 3 and irradiate the reflector plate 4 are reflected to the heat collecting tube 3, the light receiving area of the heat collecting tube 3 is increased, and the photothermal conversion efficiency of the solar water heater is improved.

In order to realize the automatic control of the rotation of the reflector 4, the embodiment is further provided with a driving device which is in transmission connection with the reflector 4 and rotates by the reflector.

The driving device mainly comprises eight synchronous wheels 7, a synchronous belt 9 and a motor 8. Wherein, eight synchronizing wheels 7 correspond fixedly with the aforesaid eight reflector panels 4 one-to-one (indirect fixation), and each synchronizing wheel 7 is coaxially and movably sleeved on the periphery of the corresponding heat collecting tube 3. The motor 8 is in transmission connection with each synchronizing wheel 7 through a synchronous belt 9 to drive each synchronizing wheel 7 to synchronously rotate, and further drive the eight reflecting plates 4 to synchronously rotate.

When the synchronous wheel device works, the motor 8 drives the synchronous wheels 7 to synchronously rotate through the synchronous belt 9. The synchronizing wheel 7 drives the reflector 4 fixed thereto to rotate, so as to adjust the reflection angle of each reflector 4 in real time, thereby ensuring that each heat collecting tube 3 can obtain sufficient illumination at any time, as shown in fig. 1, 2 and 3.

In order to avoid friction on the outer peripheral surface of the heat collecting tube 3 when the synchronizing wheel 7 rotates, the inner diameter of the synchronizing wheel 7 is set to be larger than the outer diameter of the heat collecting tube 3, and the synchronizing wheel 7 is ensured to be completely separated from the heat collecting tube 3, namely, the synchronizing wheel 7 is sleeved on the outer periphery of the heat collecting tube 3 in a hanging manner and is not contacted with the heat collecting tube 3.

If the reflector 4 or the synchronizing wheel 7 is directly and rotatably connected with the heat collecting tube 3, the heat collecting tube 3 supports the weight of the reflector 4 or the synchronizing wheel 7, so that the risk of damage of the heat collecting tube 3 is increased, and the glass heat collecting tube 3 has dimensional tolerance due to the defects of the manufacturing process, namely the coaxiality of two ends of the heat collecting tube and the concentricity of the tube wall of the heat collecting tube are not high enough, so that the rotation of the reflector 4 is not smooth enough. In this regard, the present embodiment employs the following structure for mounting the reflection plate 4:

referring to fig. 1 to 4, two reflector support arms 5 spaced apart from each other are fixedly disposed on the base frame 1. Each reflector supporting arm 5 is provided with eight sleeve holes 501 arranged at intervals along the length direction, and a supporting bearing 6 is coaxially arranged in each sleeve hole 501. For convenience of description, the two reflector support arms 5 are referred to as an upper reflector support arm and a lower reflector support arm, respectively. The upper ends of the eight heat collecting tubes 3 are respectively inserted into the eight support bearings arranged on the upper side reflector support arm, and the lower ends of the eight heat collecting tubes 3 are respectively inserted into the eight support bearings arranged on the lower side reflector support arm. It is understood that the support bearings are installed in the sleeve holes 501, and the upper and lower ends of the heat collecting tube 3 are respectively inserted into the support bearings of the two reflector support arms 5, so the upper and lower ends of the heat collecting tube 3 are also inserted into the sleeve holes 501 of the two reflector support arms 5.

The support bearing 6 may be a rolling bearing or a sliding bearing. Each support bearing in this embodiment is a sliding bearing, and specifically, the sliding bearing includes an outer bearing ring 601 fixed in the sleeve hole 501 and an inner bearing ring 602 rotatably fitted in the outer bearing ring. The upper ends of the eight reflectors 4 are respectively fixedly connected with the bearing inner rings 602 of the eight support bearings arranged on the upper reflector support arm, and the lower ends of the eight reflectors 4 are respectively fixedly connected with the bearing inner rings 602 of the eight support bearings arranged on the lower reflector support arm. Each synchronizing wheel 7 is directly sleeved on the corresponding bearing inner ring 602, and the synchronizing wheels 7 are fastened with the bearing inner rings 602. That is, the synchronous wheel 7 and the reflector 4 are indirectly fixed by the bearing inner race 602, and during operation, the synchronous wheel 7 driven by the motor drives the bearing inner race to rotate, and the bearing inner race drives the reflector 4 fixed thereto to rotate so as to adjust the reflection angle. The bearing inner ring 602 is movably sleeved outside the heat collecting pipe 3.

As can be seen from the above, the heat collecting tube 3 does not bear the weight of the reflector 4, and is not a rotary support for the reflector 4, and the bearing carrier and the rotary carrier of the heat collecting tube 3 are both the base frame 1, especially two reflector support arms 5 on the base frame. During production and processing, the coaxiality of the trepanning 501 on the two reflector supporting arms and the supporting bearing 6 is easy to control, and the supporting bearing 6 has the coaxiality compensation function, so that each reflector 4 can smoothly rotate, and the reflector is very neatly arranged on the solar water heater. In addition, the weight and the rotation friction force of the reflector 4 cannot be applied to the heat collecting tube 3, so that the service life of the heat collecting tube 3 is ensured.

In order to prevent the outer peripheral surface of the heat collecting tube 3 from being rubbed by the inner race 602 during rotation, the inner diameter of the inner race 602 should also be larger than the outer diameter of the heat collecting tube 3, and it is ensured that the heat collecting tube 3 is completely separated from the inner race 602, that is, the heat collecting tube 3 is inserted into the inner race 602 in a suspended manner, or the inner race 602 is sleeved outside the heat collecting tube 3 in a suspended manner, and the two are not in contact.

In the two reflector support arms, the lower reflector support arm is directly locked and fixed with the base frame 1 by a screw, and the upper reflector support arm is locked and fixed on the outer side of the water tank 2 by a screw. The water tank 2 is fixed with the bed frame 1, and the reflector support arm 5 of upside and water tank 2 direct fixation, so upside reflector support arm and bed frame 1 indirect fixation, the weight of upside reflector support arm still finally is by bed frame 1 bearing.

If the heat collecting tube 3 is completely suspended and inserted into the trepan boring and the supporting bearing of the reflector supporting arm 5, and the reflector supporting arm 5 does not bear the weight of the heat collecting tube 3, then other structures must be arranged on the solar water heater to bear the heat collecting tube 3, which increases the processing difficulty and material cost of the water heater, especially the base frame 1 to a certain extent. In this respect, the present embodiment is modified as follows:

eight trepanning 501 of the lower reflector supporting arm are respectively and fixedly connected with a plastic bottom support 10, namely eight bottom supports in total. The lower end of the heat collecting pipe 3 is inserted in the bottom support 10 and is abutted against the bottom support 10. The same as the traditional structure, the surface of the water tank 2 is provided with eight heat collecting pipe inserting holes 201 which are distributed at intervals, and the upper ends of the eight heat collecting pipes 3 are respectively inserted in the eight heat collecting pipe inserting holes 201 in a one-to-one correspondence manner. So, directly bear each thermal-collecting tube 3 by downside reflector panel support arm 5 and water tank 2. The weight of thermal-collecting tube 3 is directly supported by reflector support arm 5 and water tank 2, and the weight of reflector support arm 5 and water tank 2 is supported by bed frame 1 again, so thermal-collecting tube 3's weight also is supported by bed frame 1 naturally.

In order to prevent dust from entering the annular gap between the heat collecting tube 3 and the bearing inner ring, a rubber dust ring 11 is arranged between the heat collecting tube 3 and the bearing inner ring. Also, in order to prevent dust from entering the gap between the bearing outer ring and the trepan 501, a rubber dust ring 11 is provided between the bearing outer ring and the trepan 501 in this embodiment.

In order to prevent the synchronous belt and the synchronous wheel running during operation from causing personal injury, the synchronous belt 9 and the synchronous wheel 7 are completely hidden inside the reflector supporting arm 5 in the embodiment. Further, for the convenience of installation, the reflector support arm 5 is composed of a support arm front cover 5a and a support arm rear cover 5b, the support arm front cover 5a and the support arm rear cover 5b are detachably connected through screws, and a synchronous belt and a synchronous wheel are arranged between the support arm front cover 5a and the support arm rear cover 5 b.

In addition, the reflector 4 does not adopt a traditional mirror steel plate, mirror aluminum alloy or reflective film structure, but adopts a glass reflector with high reflectivity, strong weather resistance, elegant appearance and long service life.

Moreover, the glass reflector as the reflector 4 is a special structure, which is mainly composed of transparent glass 401 and a reflective film 402, specifically: the transparent glass 401 has a first surface facing the heat collecting tube 3 and a second surface facing away from the heat collecting tube. The reflective film 402 is adhesively secured to the second surface of the transparent glass 401 by an adhesive 403, with the reflective surface of the reflector facing the transparent glass 401.

It is thus clear that the glass reflector of this embodiment changes traditional glass reflector structure, has abandoned the reflection of light cladding material of traditional reflector side of being shaded, pastes the reflective membrane and form the glass reflector of novel structure and use it on solar water heater with reflection sunlight to thermal-collecting tube, is positive profitable in transparent glass one side: although the traditional glass reflector has excellent light reflecting performance and weather resistance, the traditional glass reflector has poor strength and is easy to break (especially when the traditional glass reflector is made into a curved mirror which cannot be tempered). The embodiment has the advantages that the reflecting film is adhered to one side of the transparent glass instead of the reflecting coating, so that the overall strength of the glass reflector is improved. This is because the reflective film has a certain impact resistance and is not broken by light touch as in the case of transparent glass. Moreover, even if the transparent glass of the reflector is broken by external force, the broken transparent glass still adheres to the reflecting film on the back side and is basically kept flush with the transparent glass nearby, so that the transparent glass is only broken and cannot collapse, the reflecting angle of the transparent glass cannot be greatly changed after the transparent glass is broken, and the received sunlight can still be reflected to the heat collecting tube.

The reflecting film is generally a high molecular film or a metal film, and has explosion-proof performance obviously higher than that of common transparent glass. Of course, the reflective film can be specially treated to make it an explosion-proof film with excellent explosion-proof performance.

The adhesive 403 is EVA hot melt adhesive. When the reflective film is implemented, the hot-melt EVA film is clamped between the reflective film 402 and the transparent glass 401, a certain pressure is applied, and after the hot-melt EVA film is cooled and solidified, the reflective film 402 and the transparent glass 401 are tightly connected together.

It should be noted that the term "sandwiching a hot-melt EVA film between the reflective film 402 and the transparent glass 401" also means sandwiching the EVA film between the reflective film 402 and the transparent glass 401, when the EVA film is first sandwiched between the reflective film 402 and the transparent glass 401 and then heated to melt the EVA film.

This process allows the adhesive 403 to be continuously and densely distributed between the reflective film 402 and the transparent glass 401, forming a continuous dense adhesive layer. The term "continuous densification" means that the adhesive between the reflective film 402 and the transparent glass 401 is continuously distributed to form a whole, and the adhesive layer has no obvious holes or grooves.

Even if the transparent glass of the glass reflector is broken by external force due to the existence of the continuous and compact adhesive layer, the broken transparent glass still adheres to the adhesive layer (and the reflective film) on the back side and is kept basically flush with the transparent glass nearby, so that the reflector is only broken without collapsing, the reflection angle of the reflector is not greatly changed after the reflector is broken, and the received sunlight can still be reflected to the heat collecting tube.

Of course, other processes may be used to make the adhesive layer continuous and dense, rather than having to sandwich a hot melt EVA film between two structural layers.

In this embodiment, the glass reflective mirror is a strip-shaped concave curved mirror extending linearly along the length direction of the heat collecting tube 3. By "elongated" in this application is meant that the length of the member is significantly greater than its width, typically the length of the member is at least five times the width. The glass reflector is a concave curved mirror, the reflecting surface of the glass reflector is a concave curved surface, and the reflector 4 has high light gathering capacity and can reflect all the received solar rays to the heat collecting tube 3. Further, as shown in fig. 5, the glass mirror is a circular arc mirror.

Just because the glass reflective mirror of the present embodiment is a concave curved mirror, the transparent glass configured by the glass reflective mirror is difficult to be tempered (limited by the tempering process), so the applicant can consider that the reflective film is adhered to the side of the glass reflective mirror instead of the reflective coating, so as to improve the service life and the safety of the glass reflective mirror.

The terms "suspended insertion" and "suspended sleeve" mean that the insert and the outer sleeve are completely isolated and do not directly contact with each other.

It should be noted that the base frame 1 is not limited to the structure shown in the drawings of the present application, and may take various forms, such as: a keel in secure connection with a building or ground, even the building or ground itself.

Example two:

fig. 15 to 18 show a second preferred embodiment of the solar water heater of the present application, which has a structure substantially identical to that of the first embodiment except that:

the solar water heater is also provided with eight photovoltaic panels 11, the eight photovoltaic panels 11 are correspondingly arranged on the radial side parts of the eight heat collecting pipes 3 one by one, and the eight photovoltaic panels 11 are fixedly connected with the eight reflector panels 4 one by one. Further, each photovoltaic panel 11 is disposed on a side of the corresponding reflector 4 facing away from the corresponding heat collecting tube 3, and each photovoltaic panel 11 has a photovoltaic working surface facing away from the corresponding heat collecting tube 3.

It can be understood that, since the photovoltaic panel 11 is fixed to the reflector 4 and the reflector 4 can rotate around the axis of the heat collecting tube 3, the photovoltaic panel 11 can naturally rotate around the axis of the heat collecting tube 3. That is, the reflector 4 and the photovoltaic panel 11 are rotatably arranged instead of being tightly arranged on the solar water heater, and the rotation axis of each reflector 4 and photovoltaic panel 11 is exactly the tube axis of the corresponding heat collecting tube 3.

Each photovoltaic plate 11 is a strip-shaped planar plate extending along the length direction of the corresponding heat collecting tube 3.

If with photovoltaic board 11 direct and thermal-collecting tube 3 swivelling joint, support the weight of photovoltaic board 11 by thermal-collecting tube 3, can increase the damaged risk of thermal-collecting tube 3 equally, photovoltaic board 11's rotation is also difficult to smooth-going moreover. In this embodiment, the end of the photovoltaic panel 11 is fixedly connected to the connection board on the bearing inner ring 602, and the bearing inner ring 602 carries the weight and rotation of the photovoltaic panel 11.

The mutually fixed photovoltaic panel 11 and the reflector panel 4 can rotate around the axis of the heat collecting tube 3 on the base frame 1, so that the relative position of the photovoltaic panel 11 and the heat collecting tube 3 can be adjusted by rotating the photovoltaic panel 11 (the reflector panel 4 rotates with the reflector). When the heat collecting tube 3 is needed to absorb light energy to obtain heat, the photovoltaic panel 11 is rotated to the backlight side of the heat collecting tube 3 (i.e. the side deviating from the sunlight), the heat collecting tube is exposed to light and generates heat, and the reflecting plate 4 reflects the sunlight rays emitted to the outer side of the heat collecting tube 3 to the heat collecting tube 3 at the moment, so that the light receiving area of the heat collecting tube 3 is increased, and the light-heat conversion efficiency of the solar water heater is further improved. When photovoltaic power generation is needed, the photovoltaic panel 11 is rotated to the light-facing side of the heat collecting tube 3 (i.e. the side facing the sunlight), at this time, the photovoltaic working surface of the photovoltaic panel 11 just faces the sunlight and is in a working state, and the photovoltaic panel 11 faces the light for power generation.

In practical application, the photothermal working mode and the photovoltaic working mode of the integrated machine can be flexibly selected according to needs. Such as: after enough heat energy is obtained in the photo-thermal working mode, the photo-thermal working mode is switched to the photovoltaic working mode to generate electricity, so that solar energy is fully utilized to generate heat and generate electricity, the solar energy utilization efficiency is increased, the solar energy generation and the heat generation are integrated, and the space resource is saved.

In order to improve the connection strength and stability of the reflector 4 and the photovoltaic panel 11, the embodiment further configures eight strip-shaped brackets 12 of a sheet metal structure, and fixes each reflector 4 and the corresponding photovoltaic panel 11 on two sides of the corresponding strip-shaped bracket respectively, and locks and fixes the two ends of the strip-shaped brackets 12 and the connecting plate of the upper side support bearing inner ring by means of screws. It can be seen that the reflector 4 and the photovoltaic panel 11 are not directly fixed to the connection plate of the bearing inner race 602, but are fixed to the bearing inner race 602 by the strip-shaped bracket 12.

Further, the bar bracket 12 includes two connecting plates (fig. 12 shows only the connecting plate at one end of the bar bracket, and does not show the rest of the structure) at both ends thereof, one axial end of the bearing inner ring extends out of the bearing outer ring, and the extending end of the bearing inner ring is integrally provided with a butt plate which abuts against the connecting plate at the end of the bar bracket 12 and is locked and fixed by the screw.

Example three:

fig. 19 and 20 show a third preferred embodiment of the solar water heater of the present application, which has a structure substantially identical to that of the first embodiment, except for the structure of the reflector 4, as follows:

in this embodiment, the reflecting plate 4 is also a glass reflecting mirror, but the structure of the glass reflecting mirror is different from that of the first embodiment.

Although the reflective film 402, especially the adhesive layer between the reflective film and the transparent glass 401 in the first embodiment improves the explosion-proof performance of the glass reflector, the reflective film 402 has poor weather resistance and the physical and chemical properties thereof are obviously reduced after long-term exposure to the environment. Moreover, the reflective film 402 is usually made of flexible material, and when the transparent glass 401 is broken in a large area, the flexible reflective film 402 is difficult to keep the broken glass at each position at the original position and angle. In this respect, in this embodiment, a back plate 404 is adhesively fixed on the surface of the reflective film 402 by another adhesive 403, that is, in this embodiment, the glass reflector 4 includes the back plate 404 adhesively fixed on the surface of the reflective film 402 by the adhesive 403 in addition to protecting the transparent glass 401 and the reflective film 402 of the first embodiment.

In this embodiment, the back plate 404 is glass and is also transparent glass. The use of glass as the backing plate 404 has these benefits: the glass is beautiful and elegant, has strong weather resistance and is durable.

The adhesive 403 used to attach the retroreflective sheeting 402 to the backing sheet 404 is also EVA hot melt adhesive. When the heat-melting EVA film is applied, the heat-melting EVA film is clamped between the reflective film 402 and the back plate 404, a certain pressure is applied, and after the heat-melting EVA film is cooled and solidified, the reflective film 402 and the back plate 404 are tightly connected together.

Naturally, the bonding process described above also allows the adhesive 403 between the retroreflective sheeting 402 and the backing sheet 404 to be continuously and densely distributed between the retroreflective sheeting 402 and the backing sheet 404, forming a continuous dense adhesive layer.

Even if the glass on the back side serving as the back sheet 404 is broken by an external force due to the presence of the continuous and dense adhesive layer, the broken transparent glass adheres to the second adhesive layer (and the light reflecting film), so that the glass back sheet is broken without collapsing, and the safety is high.

It should be noted that the back plate 404 may also be a flexible film that is not easily broken, such as an explosion-proof film. When the back plate 404 is a structure that is not easily broken, such as an explosion-proof film, the adhesive 403 may be dispersed between the back plate 404 and the reflective film 402 and between the transparent glass 401 and the reflective film 402, and the adhesive does not need to be continuous and dense. At this point, the explosion proof construction of the glass mirror is primarily backing 404 rather than an adhesive layer.

When the back plate 404 is an explosion-proof film, a layer of glass back plate can be adhered and fixed on the surface of the explosion-proof film by using a third layer of adhesive, so as to improve the weather resistance and the service life of the glass back plate.

Example four:

fig. 21 and 22 show a fourth preferred embodiment of the solar water heater of the present application, which has a structure substantially identical to that of the first embodiment, except for the structure of the reflector 4, as follows:

in this embodiment, the reflecting plate 4 is also a glass reflecting mirror, but the glass reflecting mirror is mainly composed of a transparent glass 401, a reflective coating 405 and a back plate 404, specifically: the transparent glass 401 has a first surface facing the heat collecting tube 3 and a second surface facing away from the heat collecting tube. A reflective coating 405 is attached to the second surface of the transparent glass. The back plate 404 is adhesively fixed to the surface of the reflective coating 405 by an adhesive 403.

It can be seen that the glass reflector used as the reflector 4 in this embodiment includes transparent glass and a reflective coating layer of the conventional glass reflector, and a fixed back plate is adhered to the back surface of the glass reflector, so as to make up for the defects that the conventional glass reflector is low in structural strength and easy to damage and hurt people. Even if the transparent glass of the glass reflector is broken due to external force, the broken transparent glass still adheres to the back plate at the back side and is basically kept flush with the transparent glass nearby, so that the transparent glass is only broken and cannot collapse, the reflecting angle of the broken transparent glass cannot be greatly changed, and the received sunlight can still be reflected to the heat collecting tube. In addition, the back plate can also protect the reflective coating on the inner side of the back plate from being damaged by foreign objects, and a protective layer is not required to be specially arranged on the reflective coating as the traditional reflector.

As mentioned above, the reflective coating 405 is attached to the second surface of the transparent glass facing away from the heat collecting tube 3. Therefore, the reflecting surface of the glass reflector is arranged towards the heat collecting tube 3, and the light received by the glass reflector can be reflected to the heat collecting tube 3.

The adhesive 403 is EVA hot melt adhesive. When the EVA heat-melting film is applied, the heat-melting EVA film is clamped between the back plate 404 and the reflective coating 405, a certain pressure is applied, and after the heat-melting EVA film is cooled and solidified, the back plate 404 and the reflective coating 405 are tightly connected together.

Also, the hot melt bonding process described above allows the adhesive 404 to be continuously and densely distributed between the backing 404 and the retroreflective plating 405 to form a continuous dense adhesive layer. By "continuously dense", it is meant that the adhesive between the backing 404 and the reflective coating 405 is continuously distributed to form a unitary body, with no significant holes or grooves in the adhesive layer.

Even if the transparent glass 401 of the glass reflector is broken by an external force, the broken transparent glass 401 adheres to the adhesive layer (and the back plate) on the back side and is kept basically flush with the transparent glass nearby, so that the reflector is broken without collapsing, the reflection angle of the reflector is not greatly changed after the reflector is broken, and the received sunlight can be reflected to the heat collecting tube.

In this embodiment, the back plate 404 is glass and is also transparent glass. The use of glass as the backing plate 404 has these benefits: the glass is beautiful and elegant, has strong weather resistance and is durable. Also, even if the glass back plate is broken by an external force, the broken transparent glass adheres to the adhesive layer, so that the glass back plate is broken without collapsing, and safety is high based on the presence of the continuous and dense adhesive layer.

It should be noted that the back plate 404 may also be a flexible film that is not easily broken, such as an explosion-proof film. When the backing 404 is a non-breakable structure such as an explosion-proof membrane, the adhesive 403 may be spread between the adhesive backing 404 and the reflective coating 405, and the adhesive need not be continuously dense. At this time, the explosion-proof structure of the glass mirror is mainly a back plate rather than an adhesive layer.

Woven or non-woven fabrics also belong to one of the above-mentioned flexible films.

The above are exemplary embodiments of the present application only, and are not intended to limit the scope of the present application, which is defined by the appended claims.

Claims (10)

1. A solar water heater with a reflector comprises:

a base frame (1),

a water tank (2) borne by the base frame, and

a plurality of heat collecting pipes (3) supported by the base frame and arranged in parallel with each other;

it is characterized in that the base frame (1) is also supported with:

each reflector (4) is uniformly arranged on the radial side part of one corresponding heat collecting pipe (3) and can rotate around the axis of the heat collecting pipe (3), and each reflector (4) is provided with a reflecting surface which faces the corresponding heat collecting pipe (3); and

the driving device is in transmission connection with each reflector (4) to drive each reflector (4) to synchronously rotate;

the driving device includes:

each synchronizing wheel (7) is coaxially and movably sleeved outside the corresponding heat collecting tube (3), and each synchronizing wheel (7) is fixedly connected with the corresponding reflector (4); and

the motor (8) is fixed with the base frame (1) and is in transmission connection with the synchronous wheels (7) through a synchronous belt (9) so as to drive the synchronous wheels (7) to rotate synchronously.

2. The solar water heater with the reflector as claimed in claim 1, wherein each synchronizing wheel (7) is suspended and sleeved outside the corresponding heat collecting tube (3).

3. The solar water heater with the reflecting plate according to claim 1, wherein each reflecting plate (4) is a strip-shaped plate extending linearly along the length direction of the corresponding heat collecting tube (3).

4. The solar water heater with the reflecting plate according to claim 3, wherein each reflecting plate (4) is a curved plate, and the reflecting surface of each reflecting plate (4) is a concave curved surface.

5. The solar water heater with the reflecting plate according to claim 4, wherein each reflecting plate (4) is an arc panel, and the reflecting surface of each reflecting plate (4) is an inward concave arc surface.

6. The solar water heater with the reflector panel as claimed in claim 3, wherein a support bearing (6) is respectively disposed between both ends of the length of each reflector panel (4) and the base frame (1), and each of the plurality of synchronizing wheels (7) is fixedly sleeved on the inner ring of the bearing corresponding to one support bearing (6).

7. The solar water heater with the reflector panel as claimed in claim 6, wherein the outer bearing ring (601) of each support bearing (6) is fixedly connected with the base frame (1), and the inner bearing ring (602) of each support bearing (6) is fixedly connected with a corresponding reflector panel (4).

8. The solar water heater with the reflector according to claim 7, wherein a photovoltaic panel (13) is fixedly arranged on the side of each reflector (4) away from the corresponding heat collecting tube (3), and each photovoltaic panel (13) has a photovoltaic working surface away from the corresponding heat collecting tube (3).

9. The solar water heater with the reflector according to claim 8, wherein a connecting plate is integrally arranged on the bearing inner ring (602) of each support bearing (6), the connecting plate of the bearing inner ring (602) of each support bearing (6) is locked and connected with the connecting plate of the bearing inner ring (602) of the corresponding support bearing (6) through a screw to form a strip-shaped bracket (12), and each strip-shaped bracket (12) is fixedly connected with one photovoltaic panel (13) and one reflector (4).

10. Solar water heater with reflector according to claim 1, characterized in that the reflector (4) is a glass reflector.

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