Solar water heater with automatic tracking
The utility model relates to a kind of heat collector of solar energy, particularly a kind of solar water heater with automatic tracking.
Solar water heater of the prior art comprises the thermal-arrest plate that is connected with heat collection water tank and the support of support set boiler and thermal-arrest plate, support all is fixed, the thermal-arrest plate towards being changeless, during use with the thermal-arrest plate direction sunward of solar water heater, so that make the thermal-arrest plate can better absorb solar energy, the shortcoming of its existence is: because the sun is to rise the west to fall from east, and the position of thermal-arrest plate is fixing all the time, sunlight overwhelming majority time in one day is that oblique fire is on the thermal-arrest plate, the time of direct projection is shorter, when sunshine and solar water heater heat-collecting plate are the angle of inclination, the thermal-arrest plate just can not absorb the heat of sunshine well, and the collecting efficiency of thermal-arrest plate is low.
The purpose of this utility model is at the deficiencies in the prior art, has proposed a kind of thermal-arrest difference of utilizing the different firing angles of sunshine, regulates the solar water heater with automatic tracking of thermal-arrest plate rotational angle on support.
The purpose of this utility model is reached by following technical scheme, solar water heater with automatic tracking of the present utility model, comprise the thermal-arrest plate that is connected with heat collection water tank and the support of support set boiler and thermal-arrest plate, be characterized in: be provided with turning cylinder between support and the thermal-arrest plate, both sides at the thermal-arrest plate are respectively arranged with container, the top sealing of two containers, bottom interconnect, container is built-in with low boiling point working medium, are provided with the sunshading board of controlling the container daylighting area according to the angle of incidence of sunlight degree respectively in container dual-side portion.The lower boiling medium of in two containers, placing, can be: ethanol, ether, acetone etc., when the morning, the sunshine oblique fire was on the thermal-arrest plate, two container heating surface areas produce difference, one of them container is not owing to there is sunshading board to be blocked, most of heat-absorbent surface of container is sunward, medium in the container is subjected to solar light irradiation, received heat is big, temperature raises, volumetric expansion after medium is heated, and generation vapour pressure, and the container of another side is owing to sheltered from by sunshading board, its heat-absorbent surface can not absorb solar energy, medium vapour pressure in the container remains unchanged, so the left and right sides produces pressure differential, to air pressure little one side is pushed medium in one side that vapour pressure is big, and the weight of the medium in another container will increase the left and right sides weight disequilibrium of thermal-arrest plate, the thermal-arrest plate rotates to one side that weight lays particular stress on lentamente, on the thermal-arrest plate, left and right sides container daylighting area is identical up to the sunshine direct projection, is subjected to the equal irradiation of sunlight, medium in two containers equalization of being heated, about weight identical and reach balance, the thermal-arrest plate keeps stable state, so just make the thermal-arrest plate of solar water heater can be all the time the direction of light direct beam sunward.
The purpose of this utility model also can further be reached by following technical scheme, and above-mentioned solar water heater with automatic tracking is characterized in: the thermal-arrest plate is provided with the counter weight device that is used to keep thermal-arrest plate balance.Like this, make the thermal-arrest plate in rotation process, under the effect of counter weight device, keep balance.
The purpose of this utility model also can further be reached by following technical scheme, and above-mentioned solar water heater with automatic tracking is characterized in above heat collection water tank, is provided with the fixedly storage tank that is communicated with and is rotationally connected with heat collection water tank.Heat collection water tank can reduced volume be installed on the thermal-arrest plate, and realize cold and hot convection current with the water in the fixing storage tank.
The utility model compared with prior art, because solar water heater has increased the device from the motion tracking sunshine, because the position of thermal-arrest plate is the direction of light direct beam sunward all the time, the thermal-arrest plate can farthest absorb the heat of sunshine, so the collecting efficiency of solar water heater has improved several times.
Accompanying drawing is an overall structure schematic diagram of the present utility model.
Embodiment one, the following examples have further described summary of the invention of the present invention.The specific embodiment of present embodiment is as shown in Figure 1: solar water heater with automatic tracking of the present utility model, comprise the thermal-arrest plate 14 that is connected with heat collection water tank 3 and the support 8 of support set boiler 3 and thermal-arrest plate 14, be provided with turning cylinder 7 between support 8 and the thermal-arrest plate 14, be respectively arranged with heavy cuboid containers 4 such as two on the both sides of thermal- arrest plate 14,11, two containers 4,11 top sealing, the bottom interconnects with taking over 6, and at container 4,11 inside is placed and is occupied container 4, half ethanol of 11 volumes is at container 4,11 dual-side portions are provided with respectively according to angle of incidence of sunlight degree control container 4, the left and right sides sunshading board 5 of 11 daylighting areas, 12.The morning sun in the east, during solar water heater work, the container 11 on the left side is sunward, the ethanol that it is inner, owing to be subjected to irradiation of sunlight, received heat is big, the temperature height, vapour pressure increased after ethanol in the container 11 was heated, and the container 4 on the right is owing to stopped the irradiation of sunlight by right sunshading board 5, ethanol vapour pressure in the container 4 remains unchanged, so in the container 11 ethanol flow to container 4, container 4 weight on one side increases, be with thermal-arrest plate 14 to rotate to the right lentamente, thermal-arrest plate 14 is vertical with sunshine up to working as, about two containers 4, when 11 illumination are identical, container 4, the ethanol equalization of being heated in 11, about weight identical, thermal-arrest plate 14 keeps stable states, the rest may be inferred, afternoon is when forwarding the west to when the sun, it is same because the sunshade effect of left sunshading board 12 causes left and right sides container 4, the difference of being heated of ethanol in 11, container 4,11 left and right sides weight disequilibrium and be with thermal-arrest plate 14 to rotate westwards, so, just make the thermal-arrest plate 14 of solar water heater can be all the time sunward direction.
Embodiment two, the following examples continue to describe summary of the invention of the present invention, in the solar water heater with automatic tracking of embodiment one, also be provided with a counterweight 9 at the middle part of thermal-arrest plate 14, counterweight 9 can be in screw rod 10 up-down adjustment, thermal-arrest plate 14 is subjected to the effect of counterweight 9, keeps balance.
Embodiment three, the following examples continue to describe summary of the invention of the present invention, in the solar water heater with automatic tracking of embodiment one, above heat collection water tank 3, are provided with the fixedly storage tank 1 that is communicated with and is rotationally connected with heat collection water tank 3.The less heat collection water tank 3 of volume is installed on the thermal-arrest plate 14, be communicated with many vacuum heat collection pipes 13 on the thermal-arrest plate 14, and heat collection water tank 3 is taken over 2 by a casing and is communicated with fixing storage tank 1.Take over 2 by this casing heat collection water tank 3 and storage tank 1 can be relatively rotated, so heat collection water tank 3 can be realized cold and hot convection current with the water in the storage tank 1.