JPS626448Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] Industrial Application Field The present invention relates to a solar heat collector, and more particularly to a cleaning device for cleaning a transparent plate attached to the surface of the heat collecting part.

Conventional technology A solar heat collector has a transparent light-transmitting plate made of glass, plastic, etc. on its surface, and solar heat is applied to the internal heat-collecting plate, heat-collecting pipe, etc. through this transparent plate. . Naturally, solar heat collectors are installed outdoors, so they are free of dust,
Dust adheres. When dust and the like adhere in this way, the transmittance of light and heat deteriorates, and the thermal efficiency deteriorates. For this reason, a solar heat collector equipped with a cleaning device for cleaning the transparent plate has also appeared, as shown in, for example, Japanese Utility Model Application Publication No. 56-86452.

This known cleaning device is equipped with a hopper having a discharge port for accumulating rainwater at the upper end of the heat collector and draining it little by little onto a transparent plate. A brush with a built-in motor operated by the output from the quantity detector is installed so that it runs on a transparent plate.
Therefore, when it rains and the water in the hopper increases to the level of the detector, the motor is activated and the brush can be rotated and cleaned.

Problems that the invention aims to solve: When the amount of rainfall increases, the rotating brush automatically starts running and cleans the translucent plate, making it possible to keep it clean. However, since the rotating brush with a built-in motor must run on a transparent plate, it becomes difficult to energize the motor.
Also, since solar collectors are usually installed at an angle, the rotating brushes must climb the slope, requiring the use of a fairly large motor. In addition, a larger motor becomes heavier, and the heavier motor itself must be lifted, which necessitates the use of a larger motor than necessary, which is difficult to achieve.

[Structure of the invention] Means for solving the problem The present invention provides a cleaning tool that reciprocates on a transparent plate, separately provides a motor for reciprocating the cleaning tool, and uses the rotation of the motor to move the cleaning tool. On the other hand, it has a water storage part that accumulates rainwater, and a water wheel that rotates and releases water when the water storage part reaches a certain level is installed, and this water wheel also pulls up the cleaning tool,
Further, a switch for operating the motor is turned on by a cam provided on the water wheel, and the rotation of the motor and the rotation of the water wheel are synchronized.

Function: When it rains, water collects in the water storage area of the water wheel, and when the amount exceeds a certain level, the water wheel rotates. This rotation also rotates the cam and turns on the switch, causing the motor to rotate. Therefore, when it rains, the cleaning tool moves due to these rotations and cleans the surface of the transparent plate. As described above, the cleaning tool is moved by the motor and also pulled up by the rotation of the waterwheel, so even a small motor can move the cleaning tool back and forth to clean the transparent plate. In addition, as mentioned above, the cleaning tool is moved by a motor and a water wheel, but since the motor is operated by the rotation of the water wheel, this device will not operate unless it rains, The above operation is performed only when the

Embodiment Figures 1 and 2 are examples of natural circulation type solar heat collectors. A heat collecting part 1 is provided with a heat collecting part such as a heat collecting plate or a heat collecting pipe in a frame 2 formed in a rectangular shape using an aluminum profile, etc., and a transparent plate 3 made of tempered glass is provided on the surface. As is well known. A hot water storage tank 4 is attached to one end of the heat collecting section 1. The hot water storage tank 4 has a bottom rising almost perpendicularly from the heat collecting part 1 and a semicircular head. This basic shape is not particularly different from those conventionally known. A rainwater guide groove 5 is formed at a position slightly displaced from the head of the hot water storage tank 4 to the rear side. Each part of the groove 5 has a V-shaped cross section, with the width being widest at the center and narrowing toward the left and right in the drawing. Further, both ends thereof protrude from both end surfaces of the hot water storage tank 4. That is, rain falling in the rainwater guide groove 5 falls from both sides of the groove 5. A water wheel 6 is attached to both end faces of the hot water storage tank 4, and the groove 5 is formed in the water wheel 6.
Water storage section 7 (Figure 2) that collects rainwater that falls from
is formed. The water wheel 6 is made up of two disks 8 stacked one on top of the other with a constant interval maintained, and the water storage section 7 is formed by providing a partition between both disks. The shape of this partition is as shown in FIG. 2, and two plates 7-1 and 7-2 are arranged radially from the center of the disk 8 to form a V-shape. It has a shape with the tip bent inward at almost a right angle. The opening angle of both plates 7-1 and 7-2 is set to 70 degrees. That is, the water storage part 7 is formed by both disks and plates 7-1 and 7-2.

Teeth are formed on a part of the periphery of the inner disk 8, and the gear 10 is connected to the gear 10 via a pinion 9 that meshes with the teeth.
It is designed to rotate. This gear 10
is connected to the oil tank 11, and the water storage section 7
When the water wheel 6 rotates due to the accumulation of rainwater in the gear 9,
The oil wheel 11 is rotated via the shaft 10. These mechanisms are provided on both sides of the hot water storage tank 4, and the shaft 12 of the gear 10 is connected to both sides so that both wheels 11 rotate simultaneously.

A motor 13 is attached to the shaft 12 to rotate it. inner disk 8
is provided with two cams 14 and 15 as shown in FIG.
It is installed to operate at 15. The cam 14 is a switch 1 for operating the motor 13.
The water wheel 6 is turned on and off when water accumulates in the water storage part 7 of the water wheel 6 and the water wheel 6 slightly rotates due to its weight, and is shaped so that it remains on even after that. On the other hand, the cam 15 is for turning on a switch 17 for changing the direction of rotation of the motor 13, and is formed at a position where it is turned on when a cleaning tool 23, which will be described later, reaches the upper end.

These electrical circuit configurations are as shown in FIGS. 5 and 6. Switch 16 causes current to flow from power source 18 through contact a of relay A and contact b of relay B to operate motor 13. As mentioned above, the switch 16 is turned on when water accumulates in the water storage section 7 during rain and the water wheel 6 starts to rotate due to its weight.
rotation is helped. The water wheel 6 rotates and the cam 15
turns on switch 17, capacitor 19
is charged. When charged to a constant voltage, transistor 20 turns on and relay A operates. Therefore, the contact a is switched and the motor 13 is stopped. When the transistor 20 is turned on, the capacitor 21 is charged, and when the voltage reaches a predetermined value, the transistor 22 is turned on and the relay B is operated. Therefore, the contact b switches,
A reverse current flows from the power source 18 to the motor 13, causing the motor 13 to rotate in reverse.

The cleaning tool 23 moves back and forth due to the rotation of the water wheel 6 and the rotation of the motor 13.
The wire 25 is pulled up by the rotation of the wire 25. This oil 11
As described above, the water wheel 6 and the motor 13 rotate the water wheel 6 and the motor 13.

As shown in FIG. 4, the cleaning tool 23 consists of a main column 26, a rubber plate 27, and a presser plate 28 for attaching the rubber plate 27 to the main column 26. The rubber plate 27 is attached so that the tip of the portion protruding from the main pillar portion 26 is always in contact with the surface of the transparent plate 3. This rubber plate 27 is the transparent plate 3
Although the surface is cleaned by wiping it, it is not limited to a rubber plate, and other flexible members may be attached. Furthermore, a brush rotated by a motor may also be used. The return of the lifted cleaning tool 23 is due to the reverse rotation of the foil 11 caused by the reverse rotation of the motor 13 by the switch 17 and the weight of the cleaning tool itself.

Water receivers 29, 29 are provided on both sides of the hot water storage tank 4 to receive water falling from the water storage section 7 when the water wheel 6 rotates.
is installed. Both water receivers 29,2
A perforated pipe 30 is connected between the waterwheels 6 and 9.
When the wheel rotates, water is sprayed from the hole.

The operation of this embodiment will be explained below. When installing this embodiment, since it is installed on a roof or the like, the hot water tank is tilted at an angle of about 30 degrees with the hot water tank facing upward.
Therefore, the rainwater guide groove 5 will almost face the top when installed. Further, the water storage section 7 is also tilted to the left to facilitate rotation by storing water in the water storage section 7.

Since the water turbine 6 does not move unless it rains, this embodiment does not operate. When it rains, the rain falling in the rainwater guide groove 5 is guided to both water storage parts 7. Therefore, water in the water storage section 7 accumulates little by little. When the water in the water storage section 7 accumulates up to the bent portion of the tip of the plate 7-2 as shown in the figure, the water wheel 6 rotates counterclockwise due to its weight. The water wheel 6 is stopped at a position where the wire 25 is loosened in advance.
Therefore, when water accumulates in the water storage section 7, the water wheel 6 rotates slightly. Due to this rotation, the switch 16 is turned on by the cam 14, and the motor 13 is rotated by the circuit described above.

Therefore, the oil wheel 11 is rotated by the rotation of the water wheel 6 due to the weight of the water storage portion 7 and the rotation of the shaft 12 by the motor 13, and the cleaning tool 23 is pulled up. When the cleaning tool 23 is pulled up close to the hot water tank 4,
Since the water wheel 6 is also rotating accordingly, the water in the water storage part 7 is poured into the water receiver 29. Water is sprinkled from the pipe 30, and when the waterwheel 6 has completely rotated, the switch 17 is turned on by the cam 15. When this switch 17 is turned on, the motor 13 is temporarily stopped by the circuit described above and then reversed.
Since the cleaning tool 23 itself is heavy, it naturally descends due to the loosening of the wire 25 due to the reverse rotation of the water wheel and motor 13.

Thus, when it rains, the cleaning tool 23 moves back and forth, and the rainwater falling on the surface of the transparent plate 3 and the water sprinkled from the pipe 30 remove dirt. In this embodiment, this operation continues during the rain, but a counter is provided so that when the motor 1 is reciprocated a predetermined number of times,
3 may be stopped by turning off the power.
It goes without saying that the power switch may also be turned off manually.

[Effects of the invention] As described above, according to the invention, a cleaning tool is created using a water wheel that collects rainwater in a water storage part and rotates due to the weight of the rainwater, and a motor that is operated by the rotation of this water wheel. Since it is configured to be moved, it automatically starts operating when it rains, and the transparent plate of the solar heat collector can be kept clean at all times. In addition, as mentioned above, the cleaning tool is pulled up by the motor and also by the water wheel, which rotates due to the weight of accumulated rainwater, so it is possible to use a relatively small motor. I can do it,
Unnecessary energy consumption can be minimized.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is a side view showing the relationship between the disk and the switch, Fig. 4 is a cross-sectional view, and Fig. 5 6 is an electrical circuit diagram of the motor, and FIG. 6 is a circuit diagram for changing the direction of rotation of the motor. 3: Transparent plate, 4: Hot water tank, 6: Water wheel, 7: Water storage section, 11: Oil wheel, 12: Shaft, 13: Motor, 14, 15: Cam, 16, 17: Switch.

Claims (1)

[Scope of utility model registration request] A cleaning tool that is attached to be able to move back and forth on the surface of a transparent plate provided on the surface of a solar heat collector and that cleans the surface of the transparent plate during the reciprocating movement, and a motor that operates to move the cleaning tool back and forth. a switch that starts the motor; and a water wheel that rotates when rainwater accumulates in a water storage section and moves the cleaning tool together with the motor by the rotation.
A transparent plate cleaning device characterized by having a cam attached to the water wheel and turning on the switch when the water wheel starts rotating due to rainwater accumulation.