KR100448511B1 - Control circuit of an apparatus for keeping track of sun - Google Patents

Abstract

The present invention relates to a control circuit of a solar tracking device, and more particularly, to manufacture a control circuit of a solar tracking device that tracks the trajectory of the sun at low cost by a simple configuration, and is easy to commercialize. The present invention relates to a control circuit of a solar tracking device that maximizes the thermal efficiency to increase the efficiency by 30 to 60% when applied to solar water heaters, solar furnaces, solar generators, and the like.

The operating temperature is set according to the season, and the solar tracking sensor unit for driving the motor is composed of the first and second internal temperature sensing sensors which switch on and off points when the collected solar heat reaches the set temperature. And a rotation sensing sensor unit comprising first to fourth rotation sensing proximity switches for stopping the driving of the motor, and a rotation sensing sensor unit including a return sensing proximity switch and a malfunction sensing proximity switch. A rectifier for rectifying and outputting a DC voltage is connected, and the first and second internal temperature sensors which switch contacts to an on state when the solar heat reaches a set temperature are connected in parallel to the output terminal of the rectifier. 1, the second to the other end of the internal temperature sensor is switched to the off contact when separated from the balance weight to the first to stop the driving of the motor Four rotation sensing proximity switches are connected in series, and the other end of the first to fourth rotation sensing proximity switches is connected in series with the first to fourth relays for supplying and disconnecting power to the motor. The malfunction detection proximity switch which cuts off the power of the motor when the contact point is converted and the system abnormality is connected, and the other end of the malfunction detection proximity switch to the sixth relay switch to turn off the main magnet switch to cut off the power supplied to the motor And a sixth relay for sequentially driving a ninth relay and a ninth relay switch, and first to fourth relay switches having contacts in an on state when the first and fourth relays are driven at an output terminal of the rectifying unit. Connected in parallel, the other phase is set at the three-phase AC 220V power supply terminal for the time to return the heating plate to the initial state Emer is connected, the output terminal of the rectifier is a timer switch that the contact is switched when the time set in the timer is completed, an eighth relay for rotating the motor in response to the change of contact of the timer switch, and complete the reverse rotation of the motor A return sensing proximity switch and a seventh relay switch for series stop, and an eighth relay switch whose contact point is changed by the eighth relay at the other end of the first to fourth relay switches, and the eighth relay switch. The seventh relay operated by the change of contact of the relay is connected in series, connected to the AC 220V power supply terminal, and the motor is fixed to the other end of the seventh and eighth relay switches in which the contact is changed by driving the seventh and eighth relays. It is characterized by connecting the reverse and reverse magnet switch for reverse rotation.

Description

Control circuit of an apparatus for keeping track of sun

The present invention relates to a control circuit of a solar tracking device, and more particularly, to manufacture a control circuit of a solar tracking device that tracks the trajectory of the sun at low cost by a simple configuration, and is easy to commercialize. The present invention relates to a control circuit of a solar tracking device that maximizes the thermal efficiency to increase the efficiency by 30 to 60% when applied to solar water heaters, solar furnaces, solar generators, and the like.

Humanity on earth is now facing two problems that must be solved. The first is the depletion of fossil energy such as petroleum and coal used by mankind, and the second is the implementation of the Climate Change Convention to prevent global warming due to the increased use of fossil energy. If fossil energy, which humans thought it could use forever, continues to be used in the same amount as it is today, oil will be exhausted in 40 years, coal in 210 years, natural gas in 65 years, and uranium in 50 years. In order to solve such a difficult problem, clean alternative energy, called 'future energy' or 'green energy', is in the spotlight, and countries are investing heavily in developing and distributing alternative energy.

Alternative energy may include sunlight, solar heat, biomass, wind power control, geothermal, fuel cells, hydrogen energy, waste energy, etc. In the present invention, the focus is on using sunlight and solar heat.

The sun has a surface temperature of 6,000 degrees Celsius and a central temperature of about 15 million degrees Celsius, which produces enormous amounts of heat and light, which amounts to 9.2 × 1022 kcal, but the earth is about 150 million kilometers from the sun. Therefore, the amount of solar radiation reaching the earth (solar constant) is only about 2 cal.

This solar radiation is not only a source of energy for our daily lives, but also a driving force for various meteorological phenomena and currents in the ocean. Other solar energy sources include solar cells, solar hot water equipment, and solar housing. , Solar furnaces, solar generators and so on.

As such, the most important factor for increasing efficiency in solar thermal systems such as solar hot water heaters, solar housings, solar furnaces, solar generators, etc. must be able to receive solar heat for a long time, and the solar concentrator must also be highly efficient. do.

That is, the sun moves along the orbit during the period from sunrise to sunset, so when the solar-powered device is fixed, the sun cannot be received under optimal conditions, thereby degrading the efficiency of the system. .

Therefore, it is not only widely known in the academic field that tracking solar heat-collecting devices along the sun's trajectory can increase the efficiency of the system by 30-60% by allowing solar heat to be taken under optimal conditions for a long time. A solar tracker was proposed.

As an example, Korean Patent Publication No. 83-2206 (published date: May 2,1983), 93-978 (published date: 1993.16), 97-16643 (published date: April 28, 1997), A number of proposals, such as 01-25541 (published date: June 16, 2001), have been proposed. However, many of these conventional solar tracking methods and control circuits are controlled programmatically by a microprocessor. There is a problem that is lacking in practical use.

In addition, the heat collecting plate for focusing more sunlight or solar heat is registered Korean Patent No. 185653 (Registration Date: December 28, 1998), Utility Model No. 210608 (Registration Date: 2000.11.6), Utility Model No. 194013 (Registration Date: June 6, 2000), Patent Publication No. 2001-44368 (published: 2001.6.5), Patent Publication No. 2001-44369 (published date: 2001.6.5), and the like, but the structure and Not only is the control circuit very complicated, but there is also a problem in that the lack of precision reduces the heating effect and has not been put to practical use.

The present invention is to solve the conventional problems as described above, by making the control circuit of the solar tracking device for tracking the sun's movement trajectory at low cost by a simple configuration, it is easy to commercialize, maximizing precision and heat collection efficiency The technical problem is to increase the efficiency by 30 ~ 60% when applied to solar water heaters, solar furnaces, solar generators and the like.

Figure 1a is a perspective view of a solar tracking device applied to the present invention.

Figure 1b is a side view of the solar tracking device applied to the present invention.

Figure 2a is a perspective view of the solar tracking sensor unit applied to the present invention.

Figure 2b is an exemplary view showing a front sectional view and the light receiving area of Figure 2a.

2C is a partial cross-sectional view of FIG. 2A.

Figure 2d is a circuit diagram of a temperature detection sensor that is a solar tracking sensor unit according to the present invention.

Figure 3a is a perspective view of a rotation sensor unit applied to the present invention.

Figure 3b (a) to (d) is an operating state diagram of the rotation sensor.

4a and 4b is a control circuit diagram of the solar tracking device according to the present invention.

<Explanation of symbols for main parts of drawing>

10 body 11 lower frame 12,13 first, second upper frame

14a, 14b: auxiliary frame

20: First Settlement 21: Motor 22: Second Settlement

23: reducer 24a, 24b: first, second belt

25: rotating shaft 25a: pulley 26a, 26b: 1st, 2nd support stand

30: rotation detection sensor 31: front panel 32: rear panel

33: indicator 33a: counterweight 34: rotation scale

35: Bolt 36a ~ 36d: 1st to 4th rotation sensing proximity switch

37: hinge 38: malfunction detection proximity switch

39: return detection proximity switch

60: solar tracking sensor

61a to 61f: first to sixth partitions 62a to 62e: first to fifth lenses

63a to 63e: first to fifth accommodating parts

64a-1 ~ 64a-4: First internal temperature sensor

64b-1 ~ 64b-4: Second internal temperature sensor

65a to 65e: first to fifth light receiving areas 66: pedestal

67: hemispherical fixing part 68: external temperature sensor

RY1 to RY9: First to ninth relays

MSW1, MSW2: 1st, 2nd magnet switch

L1 to L8: First to eighth lamps

RSW1 to RSW9: 1st to 9th relay switches BD: Rectifier

TM: Timer TSW: Timer Switch

Hereinafter, the configuration and operation of the solar tracking device applied to the present invention and the control circuit according to the present invention will be described in detail with reference to FIGS. 1 to 4B.

Figure 1a is a perspective view of a solar tracking device applied to the present invention, Figure 1b is a side view of the solar tracking device applied to the present invention, both ends of the lower frame 11, the first and second upper frame 12 13 are respectively installed, and the first and second upper frames 12 and 13 are firmly fixed by the auxiliary frames 14a and 14b to form a body 10, and the body 10 The structure of) can be changed depending on the installation place and area.

One side of the first upper frame 12 constituting the body 10 is fixed to the first settlement portion 20 and the second settlement portion 22 at regular intervals, the upper surface of the first settlement portion 20 The motor 21 is installed in the upper surface of the second settlement portion 22, the first support (26a) for supporting the rotating shaft 25 with the pulley (25a) is fixedly installed, the motor 21 and the reducer The 23 is connected to the first belt 24a, and the reducer 23 and the pulley 25a of the rotating shaft 25 are connected to each other by the second belt 24b while maintaining a constant deceleration ratio when the motor 21 is driven. The rotating shaft 25 is configured to rotate.

On one side of the second upper frame 13 constituting the body 10, a control panel 17 having an electric circuit for controlling a system such as a power supply and a rotation shaft 25 are smoothly supported and rotated. The second support 26b is installed, and the top of the second upper frame 13 divides the sun's trajectory in various stages at an arbitrary angle, and detects the detected solar heat in the divided angle region. The solar tracking sensor unit 60 is provided to apply a driving signal to the motor 21 in order to change the contact point by the temperature and rotate the rotating shaft 25 along the direction of the sun's movement.

In the central portion of the rotating shaft 25, the heat collecting plate 40 for collecting solar heat is installed in the longitudinal direction of the rotating shaft 25 so that the heat collecting plate 40 rotates at the same time when the motor 21 rotates. .

In addition, on one side of the rotary shaft 25 by the contact of the solar tracking sensor unit 60 in the same interlocking rotation with the rotary shaft 25, the heat sensing plate 40 is detected in the optimum state by detecting the motor 21 The rotation sensor unit 30 for stopping the driving of the) is installed.

Here, the heat collecting plate 40 may vary depending on the intended use, and may use a solar panel that generates electricity using solar light, or a heat collecting plate that may obtain high temperature using solar heat.

FIG. 2A is a perspective view of the solar tracking sensor unit 60 for driving the motor 21 for tracking the trajectory of the sun, FIG. 2B is a front sectional view of FIG. 2A, and FIG. 2C is a partial cross sectional view of FIG. 2A and the sun. As an exemplary view showing a light receiving area according to a moving trajectory, a hemispherical fixing part 67 having a predetermined size is formed in the center of the pedestal 66, and the first to sixth partition walls separated by a predetermined interval on the hemispherical fixing part 67. 61a to 61f are provided, and sidewalls are provided inside the first to sixth partitions 61a to 61f to form first to fifth accommodating portions 63a to 63e.

First to fifth lenses 62a to 62e for focusing sunlight are provided on an upper surface of each sidewall that forms the first to fifth storage units 63a to 63e, and according to the trajectory of the sun through the upper surface. First to fifth light receiving regions 65a to 65e capable of absorbing optimal sunlight are formed.

One side of the pedestal 66 is gradually changed according to the temperature of the atmosphere by dividing the climatic conditions of the solar temperature is not high, such as spring, autumn, winter, as shown in FIG. The external temperature sensor 68 is installed, and the second to fifth accommodating parts 63b to 63e may operate in accordance with the contact state of the external temperature sensor 68, and may be used in seasons such as spring, autumn, and winter. A first internal temperature sensor 64a-1 to 64a-4 having a temperature set to operate at a high temperature; and a second internal temperature sensor 64b having a temperature set to operate at a high climatic condition such as summer -1 ~ 64b-4) are installed respectively.

Here, the external temperature sensor 68 and the first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 may vary set temperatures, respectively. When the solar heat collected through the fifth to second lenses 62b to 62e reaches a set temperature, a two-contact temperature switch element having a contact point is used, and a temperature sensor is not installed inside the first accommodating portion 63a.

2D is a connection circuit diagram of the external temperature sensor 68 and the first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4. ) Detects the temperature of the atmosphere to distinguish between climate conditions where solar temperature is not high, such as spring, autumn, and winter, and climate conditions where solar heat is high, such as summer. Ⓐ It is connected to the contact point and when it is over the set temperature, it is switched to ⓑ contact point.

The first contact point is turned off when the internal temperature of the second to fifth accommodating parts 63b to 63e is lower than or equal to the set temperature, and turned on when the temperature is higher than or equal to the set temperature. The internal temperature sensors 64a-1 to 64a-4 are connected to each other, and when the internal temperature of the second to fifth accommodating parts 63b to 63e is lower than or equal to the set temperature at the ⓑ contact of the external temperature sensor 68. (Ⓐ contact) and the second internal temperature sensor 64b-1 to 64b-4, which is turned on when the temperature is equal to or higher than the set temperature, is connected to the first and second internal temperature sensors 64a-1 to 64a. -4) Each ⓑ contact of (64b-1 ~ 64b-4) is connected to each other.

Here, the reason for using two first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 for each of the second to fifth accommodating parts 63b to 63e. In order to prevent malfunctions that may occur due to seasonal and climatic conditions due to temperature difference of solar heat in seasonal and climatic conditions. That is, in the spring, autumn, winter and relatively cloudy days, the temperature inside the second to fifth storage units 63b to 63e is maintained at a temperature of 30 ° C., and the temperature rises above 40 ° C. in the summer when the solar heat is relatively high. As a result of the measurement, the driving time point of the first internal temperature sensors 64a-1 to 64a-4 is set to 30 ° C, and the second internal temperature sensors 64b-1 to 64b-4 are driven. The viewpoint temperature is set to 40 degreeC, respectively.

In addition, the external temperature sensor 68 operates 25 ° C. to selectively operate the first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 according to seasons. When the air temperature is 25 ℃ or lower like the spring, fall, and winter, the first internal temperature sensor 64a-1 to 64a-4 is operated. If the air temperature is 25 ℃ or higher, the second internal temperature is used. The sensor 64b-1 to 64b-4 is operated.

The diode D is connected in the forward direction between the first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 and the external temperature sensor 68. The first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 prevent the reverse current from flowing to the external temperature sensor 68 to prevent malfunction.

In the present invention, the light receiving area of the solar tracking sensor unit 60 is set to 5 zones 65a to 65e for convenience. However, the number of light receiving areas is not limited. High precision, usually flat glass in place of the first to fifth lenses 62a to 62e of the convex lenses that are installed on the upper surface of each side wall forming the first to fifth storage portions 63a to 63e to focus the sunlight. In this case, two external temperature sensors are needed because the focusing effect of sunlight is reduced.

Referring to FIG. 2A, the light receiving area of the sun tracking sensor unit 60 according to the trajectory of the sun is described. First, when the sun S is at the P1 point (sunrise point), the center axis of the sun tracking sensor unit 60 and Sunlight is received in the first light receiving region 65a located almost in a straight line, and in the second light receiving region 65b located almost in line with the central axis of the solar tracking sensor unit 60 when the P2 point is received. Will be accepted.

In addition, when the sun S continuously moves along the orbit and is at the point P3 which is in line with the central axis of the sun tracking sensor unit 60, the third light receiving region 65c, and the sun S at the point P4. If present, sunlight is received in the fourth light-receiving region 65d and in the fifth light-receiving region 65e when the sun S is at the point P5 (sunset).

Here, when the sunlight is incident on the first to fifth light receiving regions 61a to 61e, the movement of the sun S is prevented by not affecting the light receiving region adjacent by the first to sixth partition walls 61a to 61f. It is possible to accurately receive sunlight according to the orbit, and the solar heat flowing through the first to fifth light receiving regions 61a to 61e collects solar heat through the first to fifth lenses 61a to 61e. It is irradiated into the 1st-5th accommodating parts 63a-63e.

The first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 installed inside the second to fifth accommodating parts 63b to 63e are second to fifth lenses. It detects the temperature of the solar heat flowing through the (61b ~ 61e), and when the detected solar heat reaches the set temperature, the first and second internal temperature sensor (64a-1 ~ 64a-4) (64b-1 ~ The internal electrical contact of 64b-4) is converted to an on state to supply driving power to the motor 21, and the sun escapes from each of the light receiving areas 61a to 61e, and the detected solar heat does not reach the set temperature. The internal electrical contacts of the first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 are switched off.

Figure 3a is installed in the rotating shaft 25 in the configuration of the solar tracking device according to the present invention is detected by the contact plate of the solar tracking sensor unit 60 when the heating plate 40 is rotated at the optimum angle motor ( 21 is a perspective view of the rotation detection sensor unit 30 for stopping the drive.

That is, the square or circular front panel 31 and the rear panel 32 are fastened by bolts 35 with a predetermined space portion, and rotated by a hinge 37 at the central portion of one side of the front panel 31. When the free rotation and rotation sensor unit 30 itself is rotated, the guide system 33 is always installed by the center of gravity of the balance weight (33a) is installed, one side of the front panel 31, the solar tracking The rotation scales 34, which are in proportion to the number of the first to fifth light receiving regions 65a to 65e of the sensor unit 60 and display the rotation region, are displayed at regular intervals.

The rear panel 32 includes first to fourth rotation sensing proximity switches 36a to 36d at positions corresponding to the rotation scales 34 displayed on the front panel 31, and a heating plate after completion of one cycle of system operation. 40 is a return detecting proximity switch 39 having a function of stopping when returning to the sunrise point, and when the system 21 is continuously driven due to a failure or abnormal weather and the motor 21 is continuously driven, 21 is provided with a malfunction detection proximity switch 38 having a safety device function to prevent overload of the motor 21).

Here, the first to fourth rotation detection proximity switches 36a to 36d, the return detection proximity switch 39, and the malfunction detection proximity switch 38 turn on the electrical contact state when the counterweight 33a is close. In the state of maintaining), when the counterweight 33a leaves the respective proximity switch, the electrical contact state is switched to the off state and has a function of stopping the motor 21.

In the present invention, for convenience, four first to fourth rotation sensing proximity switches 36a to 36d are provided in proportion to the second to fifth light receiving regions 65b to 65e of the solar tracking sensor unit 60. As the light receiving area increases, the number of proximity switches also increases in proportion.

3A to 3E are operation state diagrams of the rotation sensor 30, and the state illustrated in FIG. 3A to explain the operation process is shown in FIG. Assuming that the initial state is located, all of the first to fourth rotation-sensing proximity switches 36a to 36d are in close proximity to the counterweight 33a, thereby maintaining an on state.

In this state, when the motor 21 is driven and the rotating shaft 25 rotates in the counterclockwise direction due to the change of the contact point output from the solar tracking sensor unit 60, the rotation detecting sensor unit 30 installed in the rotating shaft 25. ) Is also rotated in the same counterclockwise direction, but is always perpendicular to the ground by the center of gravity of the balance weight (33a).

At this time, when the rotation sensor 30 is rotated so that the first proximity switch 36a is out of the range of the balance weight 33a which is perpendicular to the ground as shown in FIG. The electrical contact of 36a is turned off, and the second rotational sensing proximity switch 36b is balanced by the continuous rotation of the rotational sensing sensor unit 30 as shown in FIG. 3B. If out of the range of), the electrical contact of the second rotation sensing proximity switch 36b is converted to an off state.

In addition, if the third proximity switch 36c is out of the range of the counterweight 33a as shown in (d) of FIG. 3B by the continuous rotation of the rotation sensor 30, the electrical of the third rotation detection proximity switch 36c When the contact is turned off, and the fourth rotation sensing proximity switch 36d is out of the range of the counterweight 33a as shown in FIG. 3B by continuous rotation of the rotation sensing sensor unit 30. The electrical contact of the fourth rotation sensing proximity switch 36d is turned off.

That is, when the first to fourth rotational sensing proximity switches 36a to 36d are close to the range of the guide system 33a, the electrical contacts are kept on to supply power to the motor 21. When the counterweight 33a is out of the first to fourth rotation sensing proximity switches 36a to 36e by rotation, the counterweight 33a is switched to a close off state to serve to block driving power of the motor 21. will be.

Therefore, by accurately tracking the heating plate 40 step by step along the trajectory of the sun by the rotation sensor unit 30 including the first to fourth rotation sensing proximity switch (36a ~ 36d) and the balance weight (33a) It is possible to maximize the heat collection efficiency.

4A and 4B are control circuit diagrams of a solar tracking device according to the present invention.

First, as shown in FIG. 4A, a rectifying unit BD for reducing and rectifying and outputting a DC voltage is connected to a three-phase AC 220V power terminal, and the second to second solar tracking sensor units 60 are connected to the output terminal of the rectifying unit BD. 5 and 1st and 2nd internal temperature sensors 64a-1 to 64a-4 64b which are respectively installed in the accommodating parts 63b to 63e to make contacts in an on state when solar heat reaches a set temperature. -1 to 64b-4) are connected in parallel.

The other end of the first and second internal temperature sensors 64a-1 to 64a-4 and 64b-1 to 64b-4 is installed in the rotation sensor 30 and close to the balance weight 33a. The first to fourth rotation sensing proximity switches 36a to 36d, which are maintained at the on contact and are switched to the off contact when separated from the counterweight 33a, are connected in series.

First and fourth relays RY1 to RY4 for supplying and cutting off power to the motor 21 are connected in series to the other ends of the first to fourth rotational sense proximity switches 36a to 36d. The first to fourth lamps L1 to L4 are connected in parallel to the first to fourth relays RY1 to RY4.

If the motor 21 is excessively rotated than the sun's moving track due to an abnormal operation of the system at the output terminal of the rectifying unit BD, the contact is turned on by the balance weight 33a of the rotation detecting sensor unit 30. The detection proximity switch 38 is connected, and when the malfunction detection proximity switch 38 is operated, the sixth relay switch RSW6, the ninth relay RY9, and the ninth relay switch RSW9 are sequentially driven to maintain the main magnet. The sixth relay RY6 that turns off the switch MC to cut off the power supplied to the motor 21 is connected in series.

In addition, as shown in FIG. 4B, first to fourth relay switches RSW1 to RSW4 having contacts in an on state when the first and fourth relays RY1 to RY4 are driven are connected in parallel to the output terminals of the rectifying unit BD. do.

A timer TM having a time set for the user to return the heating plate 40 to the initial state is connected to the three-phase AC 220V power supply terminal, and a time set for the timer TM to the output terminal of the rectifying unit BD. Is completed, the timer switch TSW for switching the contact to the on state, and the eighth relay RY8 driven by the timer switch TSW to supply reverse voltage to return the motor 21 to the initial state. The return detecting proximity switch 39 and the seventh relay switch RSW7a for stopping the motor 21 after returning to the initial state are connected in series.

On the other end of the parallel connected first to fourth relay switches RSW1 to RSW4, an eighth relay switch RSW8a whose contact is changed by the eighth relay RY8 and an eighth relay RSW8a The seventh relay RY7 whose contact is operated by change is connected in series.

The other end of the seventh and eighth relay switches RSW7b and RSW8b whose contacts are changed by driving the seventh and eighth relays RY7 and RY8 is forward-reversed to rotate the motor 21 forward and backward. And a forward / reverse rotation magnetic switch (MSW1) (MSW2) for supplying a reverse voltage is connected.

Reference numeral PSW1 is a main power switch, PSW2 is an auxiliary power switch, C is a smoothing capacitor, an MSW magnet contact point, and MC is a main magnet switch of the motor 21.

Referring to the operation of the solar tracking device and the control circuit according to the invention applied to the present invention having the above configuration in detail as follows.

First, when the main and auxiliary power switches PSW1 and PSW2 shown in the control circuit diagrams of FIGS. 4A and 4B are connected in an on state, the main magnet switch MC is driven to supply operating power to the motor 21. At the same time, the rectifier DB converts the power of AC 220V to DC after reducing and rectifying the first and ninth relays RY1 to RY9, the timer TM, and the first to fourth rotation sensing proximity switches 36a to 36d. ), And the first and second internal temperature sensor (64a-1 ~ 64a-4) (64b-1 ~ 64b-4) to be in an operable state, in this state by operating the timer (TM) heating plate ( 40 sets the time at which the point of time for returning to the initial state, i.e., the sunset time has passed completely.

Here, the setting time of the timer TM may be arbitrarily changed by the user because the sunrise and sunset times are different according to the season. However, in the present invention, it is assumed that the timer is set to 21:00 for convenience of description and the current season is set. Assuming spring, it is assumed that the first internal temperature sensor 64a-1 operates.

In this state, as shown in FIG. 2A, when the sun moves along the orbit after sunrise and reaches the point P2 at the point P1 (sunrise point), the first to fifth light receiving regions 61a to 61e of the sun tracking sensor unit 60 are provided. Among them, the most sunlight is introduced from the second light receiving region 61b in which the center of the sun tracking sensor unit 60 and the sun S are in a straight line, and in the other third to fifth light receiving regions 61c to 61e. Although sunlight flows in, it is blocked by the first to sixth partitions 61b to 61f, and thus does not affect the internal temperature sensor installed in the other third to fifth accommodating parts 63c to 63e.

The solar heat flowing through the second light receiving region 61b is collected by the second lens 61b and irradiated into the second accommodating portion 63b to increase the temperature and to detect an external temperature. (68) determines whether the first and second internal temperature sensors 64a-1 and 64b-1 operate.

That is, when the temperature of the atmosphere is less than 25 ℃ set as shown in Figure 2d, the external temperature sensor 68 is connected to the contact ⓐ to operate in conjunction with the first internal temperature sensor 64a-1, the air temperature is When the temperature is greater than or equal to 25 ° C., the external temperature sensor 68 is connected to the ⓑ contact to operate in conjunction with the second internal temperature sensor 64b-1.

In addition, when the internal temperature reaches 30 ° C. due to the temperature rise of the second accommodating portion 63b, the internal switch of the first internal temperature sensor 64a-1 is connected to the ⓑ contact point, 2 When the internal temperature of the accommodating part 63b reaches 40 ° C., the internal switch of the second internal temperature sensor 64b-1 is connected to the ⓑ contact so that the DC power source is the first or second internal temperature sensor 64a-. 1) Output via 64b-1.

That is, when the temperature of the air is less than or equal to 25 ° C., the closed circuit is configured through the external temperature sensor 68 and the first internal temperature sensor 64a-1. When the temperature is 25 ° C. or more, the external temperature is detected. The closed circuit is configured by the sensor 68 and the second internal temperature sensor 64b-1.

Therefore, as shown in FIG. 4A, the first or second internal temperature sensor 64a-installed in the first accommodating part 63a by receiving maximum solar heat through the second lens 61b in the second light receiving region 65b. 1) When any one of 64b-1 is connected in the on state (ⓑ contact), the first rotation detecting proximity switch of the rotation detecting sensor unit 30 which is normally in contact with the balance weight 33a in the on state. The first relay RY1 is driven through 36a to connect the first relay switch RSW1 of FIG. 4B to the on state, and thus through the eighth relay switch RSW8a which normally maintains the on-contact point. The seventh relay RY7 is linked to the seventh relay RY7. Therefore, the forward three-phase power is supplied to the motor 21 by operating the forward rotation magnet switch MSW1 as the seventh relay switch RSW7b is turned on. It rotates counterclockwise.

That is, when forward power is supplied to the motor 21 and rotates in the counterclockwise direction, as shown in FIGS. 1A and 1B, the motor 21 is transmitted to the reducer 18 by the first belt 24a and decelerated at a predetermined rate. Again, the second belt 24b is transferred to the pulley 25a formed at the end of the rotation shaft 25 to eventually rotate the heat plate 40 fixed to the rotation shaft 25 in the counterclockwise direction.

When the rotating shaft 25 is rotated by the rotation of the motor 21, the rotation detecting sensor unit 30 installed on the rotating shaft 25 itself rotates in the same direction, but (a) and (b) of FIG. As shown in the figure, the guide system 33 and the counterweight 33a are always kept perpendicular to the ground by the center of gravity and the hinge 37 of the counterweight 33a.

Thereafter, as shown in (b) of FIG. 3B, by the rotation of the rotation shaft 25, the first rotation detection proximity switch 36a, which is the rotation detection sensor unit 30, is kept from the balance weight 33a which is perpendicular to the ground. When it is out of the electrical contact of the first rotation sensing proximity switch 36a is switched to the off state, thereby the first relay RY1 and the first relay switch (RSW1) and the seventh relay of FIGS. 4A and 4B By sequentially turning off the RY7 and the seventh relay switch RSW7b, the rotation of the motor 21 is stopped by blocking the contact of the forward rotation magnet switch MSW1.

At this time, the rotating shaft 25 and the fixed heat exchanger plate 40 are aligned with the angle of the second light receiving region 61b and the sun, thereby being in a position capable of absorbing the maximum sunlight.

In addition, as shown in FIG. 2B, when the sun S continuously moves along the orbit and reaches the point P3, the most sunlight is introduced in the third light receiving region 61c of the solar tracking sensor unit 60. The incoming solar heat is collected by the third lens 61c and irradiated into the third accommodating portion 63c, so that the temperature increases, and any of the first and second internal temperature sensors 64a-2 and 64b-2 is increased. When one reaches the set temperature, the internal contact is turned on.

When any one of the first and second internal temperature sensors 64a-2 and 64b-2 provided in the third accommodating portion 63c is connected in an on state, the device is turned on in proximity to the counterweight 33a. The second relay RY2 is driven through the second rotation sensing proximity switch 36b of the rotation sensing sensor unit 30 which forms a contact in the state to connect the second relay switch RSW2 of FIG. As a result, the seventh relay RY7 is linked to and operated through the eighth relay switch RSW8a, which normally maintains the on-contact point. As a result, the seventh relay switch RSW7b is turned on so that the forward rotation is performed. By operating the magnet switch MSW1, the three-phase power in the forward direction is supplied to the motor 21, thereby rotating in the counterclockwise direction.

Thereafter, as shown in (b) of FIG. 3B, when the second rotation sensing proximity switch 36b, which is the rotation sensing sensor unit 30, is released from the counterweight 33a by the rotation of the rotation shaft 25, the second rotation sensing. The proximity switch 36b is switched to the off state, thereby sequentially turning off the second relay RY2 and the second relay switch RSW2, and the seventh relay RY7 and the seventh relay switch RSW7b. The rotation of the motor 21 is stopped by blocking the contact of the forward rotation magnet switch MSW1.

At this time, the rotating shaft 25 and the fixed heat exchanger plate 40 are aligned with the angle of the third light receiving region 61c and the sun, thereby being in a position capable of absorbing the maximum sunlight.

On the other hand, when the sun (S) is continuously moved along the orbit to reach the point P5 through the above process as shown in Figure 2b the most sun in the fifth light receiving region (61e) of the sun tracking sensor unit 60 Light is introduced, and the solar heat is collected by the fifth lens 61e and irradiated into the fifth accommodating portion 63e to increase the temperature, thereby allowing the first and second internal temperature sensors 64a-4 ( When any one of 64b-4) reaches the set temperature, the internal contact is turned on.

When any one of the first and second internal temperature sensors 64a-4 and 64b-4 installed in the fifth accommodating portion 63e is connected in an on state, the counterweight 33a is normally used as shown in FIG. 4A. 4th relay RY4 is driven through the fourth rotational sensing proximity switch 36d of the rotational sensing sensor unit 30 which is in contact with the on state. Connected to the on-state, thereby operating the seventh relay RY7 through the eighth relay switch (RSW8a) that normally maintains the on-contact point, thereby causing the seventh relay switch (RSW7b) to the on state By connecting the forward rotation magnet switch MSW1, the three-phase power in the forward direction is supplied to the motor 21, thereby rotating in the counterclockwise direction.

Thereafter, when the fourth rotation sensing proximity switch 36d, which is the rotation sensing sensor unit 30, is released from the counterweight 33a by the rotation of the rotation shaft 25 as shown in FIG. 3B, the fourth rotation sensing The proximity switch 36d is switched to the off state, thereby sequentially turning off the fourth relay RY4 and the fourth relay switch RSW4, and the seventh relay RY7 and the seventh relay switch RSW7b. The rotation of the motor 21 is stopped by blocking the contact of the forward rotation magnet switch MSW1.

At this time, the rotating shaft 25 and the fixed heat exchanger plate 40 are aligned with the angle of the fifth light receiving region 61e and the sun, thereby being in a position capable of absorbing the maximum sunlight.

On the other hand, when the driving time set in the timer TM is completed in the state that the heat collecting plate 40 can absorb the sunlight at the maximum by matching the angle (sunset position) of the fifth light receiving region 61e and the sun. The heat collecting plate 40 is returned to the initial position where the angle (sunrise position) of the first light receiving region 61a and the sun coincide.

That is, when the time (21:00 minutes) set in the timer (TM) is completed, the timer switch (TSW) is connected to the on state in the timer (TM) as shown in FIG. 4B, and thus the proximity of the counterweight (33a) The eighth relay RY8 to be driven by the return detecting proximity switch 39 which is in contact with the on state and the seventh relay switch RSW7b connected by the on-contact due to the off state of the seventh relay RY7. As a result, as the eighth relay switch RSW8b is connected to the on state, the reverse magnet switch MSW2 is driven so that the three-phase reverse power is supplied to the motor 21 and rotated clockwise. The heat collecting plate 40 is rotated back to an initial position at which sunrise starts coinciding with the angle of the first light receiving region 61a.

After that, when the heating plate 40 reaches the initial position at which the sunrise starts by the continuous reverse rotation of the motor 21, the return detection proximity installed in the rotation detection sensor unit 30 as shown in (a) of FIG. 3B. Since the switch 39 is out of the range of the counterweight 33a and the contact is changed to the off state, this causes the eighth relay RY8 and the eighth relay switch RSW8 to be sequentially turned off as shown in FIG. 4B. Accordingly, the reverse rotation magnetic switch (MSW2) is turned off, and the motor 21 is stopped so that the heating plate 40 is correctly returned to the initial position at which sunrise begins.

That is, when the time set in the timer TM is completed, the heating plate 40 is automatically operated by returning to the sunrise point, and the setting time of the timer TM is adjusted by the user according to different seasons of day and night. It is possible.

On the other hand, after the motor 21 is finally stopped in the fifth light receiving region 61e by the malfunction detecting proximity switch 38, the motor 21 is completed when the time set in the timer TM is completed. ) Should be reversed and returned to the sunrise time, but if the motor is rotated beyond the range of the malfunction detection proximity switch 38 due to abnormal operation of the system or sensor failure, the motor is stopped by forcibly shutting off the power supply of the system. (21) was prevented from being broken.

That is, when the motor 21 continuously rotates counterclockwise due to the abnormal operation of the system or the failure of various sensors and goes out of the range of the counterweight 33a beyond the range of the malfunction detection proximity switch 38, as shown in FIG. 4A. As described above, the contact of the malfunction detecting proximity switch 38 is turned off, and as a result, the sixth relay RY6, the sixth relay switch RSW6, the ninth relay RY9, and the ninth relay switch RSW9 are sequentially turned on. By turning off the power supplied to the motor 21 to be turned off to prevent the damage of the motor 21 by the overload.

As described above, the control circuit of the solar tracking device according to the present invention can secure the maximum sunlight by enabling the solar tracking device to accurately track the trajectory of the sun by a simple configuration and precise operation.

As described above, the control circuit of the solar tracking device according to the present invention separates the moving trajectory of the sun into a plurality of stages so that the sunlight can be taken as the optimum condition for each zone, and is manufactured at low cost by a simple configuration. It is possible to be widely commercialized, as well as by the precise operation of solar water heaters, solar furnaces, solar generators when applied to the effect is to increase the efficiency by 30 ~ 60%.

Claims (1)

The operating temperature is set for each season and consists of the first and second internal temperature sensor (64a-1 ~ 64a-4) (64b-1 ~ 64b-4) is switched on when the concentrated solar heat reaches the set temperature The first to fourth rotational sensing proximity switches 36a to 36d for stopping the driving of the motor 21 by changing the contact point according to the proximity of the solar tracking sensor unit 60 and the balance weight 33a for driving the motor 21. In the solar tracking device comprising a rotation detection sensor unit 30, consisting of a return detection proximity switch 39 and a malfunction detection proximity switch 38, Rectifier (BD) for reducing pressure and rectifying and outputting as DC voltage is connected to AC 220V power terminal of three phases, The first and second internal temperature sensors 64a-1 to 64a-4, 64b-1 to 64b-4, whose contacts are switched to an on state when the solar heat reaches a set temperature at the output terminal of the rectifying part BD. ) Are connected in parallel, The other end of the first and second internal temperature sensors 64a-1-64a-4 and 64b-1-64b-4 is switched to an off contact when the balance weight 33a is separated from the motor 21. First to fourth rotation sensing proximity switches 36a to 36d for stopping driving are connected in series, On the other end of the first to fourth rotation sensing proximity switches 36a to 36d, first to fourth relays RY1 to RY4 for supplying and cutting off power to the motor 21 are connected in series. A malfunction detection proximity switch 38 is connected to the output terminal of the rectifying part BD so that the contact is converted by the balance weight 33a to cut off the power of the motor 21 when a system error occurs. At the other end of the malfunction detection proximity switch 38, the sixth relay switch RSW6, the ninth relay RY9, and the ninth switch to turn off the main magnet switch MC to cut off the power supplied to the motor 21. A sixth relay RY6 for serially driving the relay switch RSW9 is connected, First to fourth relay switches RSW1 to RSW4 having contacts in an on state when the first and fourth relays RY1 to RY4 are driven are connected to an output terminal of the rectifying unit BD in parallel. A three-phase AC 220V power supply terminal is connected with a timer TM for setting a time for returning the heating plate 40 to an initial state. At the output terminal of the rectifier BD, a timer switch TSW for contact switching when the time set in the timer TM is completed, and a motor 21 to be reversely rotated by a change in contact of the timer switch TSW. The eighth relay RY8 and the return detecting proximity switch 39 and the seventh relay switch RSW7a for stopping after completion of the reverse rotation of the motor 21 are connected in series, On the other end of the first to fourth relay switches RSW1 to RSW4, an eighth relay switch RSW8a whose contact is changed by the eighth relay RY8 and a contact change of the eighth relay RSW8a. The seventh relay RY7 operated by is connected in series, The motor 21 is set at the other end of the seventh and eighth relay switches RSW7b and RSW8b, which are connected to an AC 220V power terminal and whose contacts are changed by driving the seventh and eighth relays RY7 and RY8. Control circuit of the solar tracking device, characterized in that the reverse and reverse rotation magnetic switch (MSW1) (MSW2) for the reverse rotation.