CN202101445U - Automatic shading device of solar energy collector - Google Patents

Abstract

The utility model relates to an automatic shading device for a solar energy collector, a bracket installed under the solar collector, a winding box is fixedly installed on the bracket, and a winding shaft rotates in the winding box, which is rotated and installed on the bracket There is a traction roller, and a servo motor is installed on the outside of the traction roller. The output shaft of the servo motor is connected with a worm gear, and the worm gear is fixedly connected with the traction roller. A coil spring is installed at the end of the winding shaft of the winding box. There is a shading cloth, and a traction belt is installed on the traction roller, and the traction belt is fixedly connected with the shading cloth, and the traction belt or the shading cloth are automatically and selectively covered on the top of the solar collector. The utility model automatically shades the solar energy collector when the load of the solar energy collector does not need to receive energy, improves the use safety of the solar energy collector, prolongs the service life, reduces operation and maintenance costs, and is beneficial to environmental protection and resource conservation.

Description

Automatic shading device for solar collectors

technical field

The utility model relates to a solar energy utilization device, in particular to an automatic shading device for a solar energy collector.

Background technique

At present, the design power of solar energy collectors at home and abroad is generally based on the local annual average solar radiation intensity (even the solar radiation intensity on the winter solstice), because the solar radiation intensity varies with seasons, weather conditions, load changes, etc. Factors, some insurmountable problems will arise during actual operation, such as:

1. Solar water heater:

When the solar radiation intensity is greater than the design parameters, the water temperature of the hot water tank exceeds the design temperature, and even boils, and the hot water scalds people; the non-pressurized hot water tank will discharge a large amount of water vapor, wasting precious water resources, and the pressure-bearing hot water tank The safety valve of the water tank will jump frequently, causing potential safety hazards.

If the amount of hot water used is too low, the hot water tank will boil, waste water resources and cause safety hazards.

When the hot water tank does not need to be heated, the collector is exposed to the sun for a long time, resulting in unnecessary power attenuation, shortening the service life, increasing the frequency of replacing the collector, and increasing the operation and maintenance costs.

2. Solar cells:

When the energy storage battery is fully charged, the solar panel is still exposed to the sun for a long time, causing the energy storage battery to be overcharged, shortening the life of the battery, increasing the frequency of replacing the energy storage battery, and increasing the operation and maintenance costs.

The invalid service period of solar panels is prolonged, shortening the life of solar panels, increasing the frequency of replacing solar panels, and increasing operation and maintenance costs.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, to provide a solar energy collector to automatically shade the solar energy collector during the period when the load does not need to receive energy, and to improve the safety and service life of the solar energy collector. The automatic shading device of the solar energy collector that reduces operation and maintenance costs, is conducive to environmental protection and saves resources.

According to the technical solution provided by the utility model, the automatic shading device of the solar energy collector includes a bracket installed under the solar heat collector, and a winding box is fixedly installed on the bracket on the left side of the solar heat collector. The opening of the box is located above the solar collector, and a winding shaft is installed in the winding box, and a traction roller is installed on the bracket on the right side of the solar collector, and the top edge of the traction roller is located above the solar collector. There is a servo motor on the outside of the traction roller, the output shaft of the servo motor is connected with a worm gear, and the worm gear is fixedly connected with the traction roller, a coil spring is installed at the end of the rewinding shaft of the rewinding box, and a light shield is installed on the rewinding shaft. Cloth, a traction belt is installed on the traction roller, the traction belt is fixedly connected with the near end of the shading cloth, and the traction belt or the shading cloth is selectively covered on the solar collector.

A shading limit trigger switch and a reset limit trigger switch are arranged on the outside of the end of the traction roller, and a signal receiver is fixedly installed at the end of the traction roller. The signal receiver, the shading limit trigger switch and the reset limit trigger switch are both Coordinated, the signal receiver is connected with the servo motor control circuit.

The utility model automatically shades the solar energy collector when the load of the solar energy collector does not need to receive energy, improves the use safety of the solar energy collector, prolongs the service life, reduces operation and maintenance costs, and is beneficial to environmental protection and resource conservation.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is an enlarged view of part A in Fig. 1 .

Fig. 3 is a structural schematic diagram of the light-receiving state of the utility model.

Fig. 4 is a structural schematic diagram of the light-shielding state of the utility model.

Detailed ways

Below in conjunction with specific accompanying drawing and embodiment the utility model is further described.

As shown in the figure, the utility model is mainly composed of a shading cloth 2, a coil spring 3, a winding box 4, a traction belt 5, a traction roller 6, a shading limit switch 7, a photoelectric switch photosensitive port 8, a worm gear 9, and a servo motor 10 , Resetting limit photoelectric switch 11 and support 12 and other components.

The automatic shading device of the solar energy collector comprises a support 12 installed below the solar heat collector 1, and a winding box 4 is fixedly installed on the support 12 on the left side of the solar heat collector 1, and the opening of the winding box 4 is located at Above the solar collector 1, a rewinding shaft is installed in the rewinding box 4, a reset limit photoelectric switch 11 is arranged on the inner side of the end of the rewinding shaft, and a traction roller is installed on the bracket 12 on the right side of the solar collector 1 6. The top edge of the traction roller 6 is located above the solar collector 1, the inner side of the end of the traction roller 6 is provided with a shading limit photoelectric switch 7, and the outer side of the traction roller 6 is provided with a servo motor 10, the output shaft of the servo motor 10 The worm gear 9 is connected to the top, and the worm gear 9 is fixedly connected with the traction roller 6. A coil spring 3 is installed at the end of the winding shaft of the winding box 4, and a shading cloth 2 is installed on the winding shaft. A traction belt 5 is installed on the traction belt 5, and a photoelectric switch photosensitive port 8 is opened on the traction belt 5. The traction belt 5 is fixedly connected with the near end of the shading cloth 2, and the traction belt 5 or the shading cloth 2 is selectively covered on the solar collector. 1 above.

The photosensitive port 8 of the photoelectric switch on the traction belt 5 is in the top of the reset limit photoelectric switch 11 when in the reset state, and is in the top of the light-shielding limit photoelectric switch 7 when in the light-shielding state. The signal of bit photoelectric switch 7 is connected with the controller of servo motor 10 .

During normal operation (receiving light), the aluminum-coated non-woven fabric shading cloth 2 is wound up in the winding box 4 by the coil spring 3 in the winding box 4. When the load of the solar energy collector 1 is not required (such as: solar energy When the water temperature of the hot water tank reaches the set temperature, or when the solar battery starts to be overcharged), the controller of the servo motor 10 sends an instruction of "no load demand", starts the servo motor 10 to rotate forward, and drives the traction after decelerating through the worm gear 9 Roller 6, traction roller 6 pulls the shade cloth 2 out of the winding box 4 through the traction belt 5 (the coil spring 3 is compressed at this time), when the photoelectric switch photosensitive port 8 on the traction belt 5 reaches the shading limit photoelectric switch 7 When above, the servo motor stops forward rotation, so that the shading cloth 2 covers the solar energy collector 1, and the heat collector 1 stops supplying energy to the load (shading); when the load of the solar energy collector has demand (such as: solar heat When the water temperature of the water tank is lower than the set temperature, or when the solar battery needs to be charged), the controller of the servo motor 10 sends a command of "the load has demand", starts the servo motor 10 to reverse, and drives the traction roller after decelerating through the worm gear 9 6 Reverse, the shading cloth 2 is rolled into the winding box 4 by the coil spring 3 in the winding box 4 (the coil spring 3 is loosened), when the photoelectric switch photosensitive port 8 on the traction belt 5 reaches the reset limit photoelectric switch 11 When it is up, the servo motor stops reversing, changes from the light-shielding state to the light-receiving state, and the heat collector continues to supply energy to the load.

Claims (3)

1. the AUTOMATIC SUNSHADE of a solar energy collector; Be included in the support (12) that install solar thermal collector (1) below, on the support (12) in solar thermal collector (1) left side, be installed with rolling box (4), the opening of rolling box (4) is positioned at the top of solar thermal collector (1); In rolling box (4), Scroll is installed; The inboard, end of Scroll is provided with the limiting photoelectric switch that resets (11), on the support (12) on solar thermal collector (1) right side, carry-over pinch rolls (6) is installed, and the top rib of carry-over pinch rolls (6) is positioned at the top of solar thermal collector (1); Be provided with servomotor (10) in carry-over pinch rolls (6) outside; The inboard, end of carry-over pinch rolls (6) is provided with shading limiting photoelectric switch (7), is connected with worm gear pairs (9) on the output shaft of servomotor (10), and worm gear pairs (9) is fixedly linked with described carry-over pinch rolls (6); It is characterized in that: wind spring (3) is installed in the Scroll end of rolling box (4); Gobo (2) is installed on Scroll, traction belt (5) is installed on carry-over pinch rolls (6), have optoelectronic switch sensitization mouth (8) on the traction belt (5); Traction belt (5) and the close end mutually of gobo (2) one that is fixedly linked, traction belt (5) or gobo (2) optionally cover the top of solar thermal collector (1).

2. the AUTOMATIC SUNSHADE of solar energy collector as claimed in claim 1; It is characterized in that: be provided with shading limiting photoelectric switch (7) in the inboard, end of carry-over pinch rolls (6); The inboard, end of Scroll is provided with the limiting photoelectric switch that resets (11); Have optoelectronic switch sensitization mouth (8) on the traction belt (5), in the time of above optoelectronic switch sensitization mouth (8) arrives the limiting photoelectric switch (11) that resets, servomotor (10) stops counter-rotating; When optoelectronic switch sensitization mouth (8) arrived shading limiting photoelectric switch (7) top, servomotor (10) stopped just to change.

3. the AUTOMATIC SUNSHADE of solar energy collector as claimed in claim 2 is characterized in that: servomotor (10) counter-rotating or just changeing is that load according to solar energy collector (1) has demand or do not have demand and starts automatically.

Images