JPS6342287Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an automatic cleaning device for cleaning the surface of a transparent plate such as glass that is stretched over the surface of a solar heat collector.

In recent years, solar heat collectors have become widely used in general households as a device for implementing resource-saving measures by effectively utilizing solar energy. For example, rooftops are often selected, and as a result, the surface of the transparent plate such as glass attached to the surface of the heat collector becomes cloudy or dirty due to accumulation of dust or other causes. If so, it is extremely difficult to remove it.

This invention was devised to solve these problems with conventional solar heat collectors, and includes a trolley that can be remotely and automatically moved back and forth along the surface of the collector. A spray nozzle for spraying cleaning liquid onto the surface of the heat collector and an air injection nozzle for spraying air for drying the sprayed liquid are separated by an appropriate interval along the moving direction of the trolley. The liquid supply source and the air supply source are connected to each nozzle on the truck by a flexible tube.

Next, the present device will be specifically described with reference to the drawings showing the embodiment. A cart 1 is mounted on a pair of rails 2, 2 so that it can roll on wheels 3, and can be automatically moved back and forth along the surface of a solar heat collector 4. Limit switches 5, 5 are provided at both ends of the running section, respectively, which allow the cart 1 to repeatedly move back and forth.
The installation mode of the may be horizontal, but in most cases it is installed on an inclined surface perpendicular to the sun's rays, and in some cases it is installed on an inclined surface close to the vertical. In such cases, the relationship between the rail 2 and the wheels 3 is particularly important, as they are not spaced apart from each other.
It is necessary to employ a means for preventing the carriage 1 from lifting off the rail 2, for example by using a structure in which the wheels embrace the rail from both sides.

6 is a spray nozzle for spraying a cleaning liquid onto the surface of the heat collector 4; 7 is an air jet for spraying air for drying the sprayed liquid onto the surface of the heat collector 4; It's a nozzle. The spray nozzle 6 and the air injection nozzle 7 are provided on the truck at front and back positions separated by an appropriate interval along the moving direction of the truck 1. 8 is a main distribution pipe for cleaning liquid, 9 is a main distribution pipe for drying air, 10 is an inlet pipe for cleaning liquid, 11 is an inlet pipe for drying air,
Both are provided on the truck 1 and move as the truck moves. 12 is a flexible tube for feeding cleaning liquid to the inlet pipe 10 on the truck 1; 13 is a flexible tube for feeding drying air to the inlet tube 11 on the truck 1; also the respective fluid sources,
For example, by connecting a cleaning liquid pump, an air compressor, etc. to the inlet pipe 10 and the inlet pipe 11, respectively, fluid can be freely supplied to the moving truck 1 from each fluid supply source fixed at a predetermined position. make it possible to send The flexible tubes 12 and 13 are suspended by a pulley 14 so that they can slide on a support wire 15 and follow the movement of the truck.

The trolley 1 is hoisted up or loosened and lowered by a traction rope 16 via a drum 17 by a variable speed reversible motor 18.

Next, the function of automatic cleaning performed using the device of the present invention will be explained. First, while driving the cleaning liquid pump and air compressor (not shown),
By operating the reversible motor 18 and loosening the tow rope 16, the cart 1 is gently suspended in the direction of arrow P in the figure by the action of gravity. In this example, the movement in the direction of arrow P causes the liquid jet to precede the dry air jet, so P
Movement in this direction constitutes a process for performing a cleaning operation, and movement in the opposite direction, Q, does not constitute a process for performing a cleaning operation.
Therefore, during the movement in the Q direction, the injection of liquid and air may be stopped, and it is preferable that the injection of liquid and air be stopped. While moving in the P direction, liquid and air are continuously jetted, and the dust and the like on the transparent plate on the surface of the heat collector 4 is first washed away by the preceding liquid jet, and then the jet continues to advance. By jetting dry air from the air jet nozzle, the surface of the transparent plate wetted by the liquid is immediately dried. The liquid in this case may be ordinary water, or may be a chemical solution that has been given a dissolving and cleaning ability. Also, the drying air in this case may be a normal atmospheric supply or may be a heated or unheated compressed gas.

Furthermore, in parallel with the jetting of the cleaning liquid, a mechanical dust removal device such as a rotating brush is provided in this part, as a known means applied to such a cleaning device.
It is of course effective to perform the function of removing dust and the like more actively, and is desirable as an additional structure that is added depending on the situation.

When cleaning the surface of a device that will be left in the atmosphere, such as the device of this invention, and trying to maintain its clean state for a long time, the surface should be kept wet after washing away the deposits on the surface with liquid. You may have left it alone or left it to dry naturally.
The remaining liquid acts as an adsorption medium for dust and the like, and the painstaking cleaning operation ends up losing most of its effectiveness. In the present device, the reason why the drying process using air is added at the same time as the liquid injection process is to block the above-mentioned undesirable phenomenon, and the remaining liquid after cleaning is This is to immediately dry and eliminate the residual liquid, thereby eradicating the action of the residual liquid as an adsorption medium for dust and the like.

The area indicated by "R" in the figure indicates the storage area of the trolley 1 when cleaning is not performed. It goes without saying that the storage area may be selected on the opposite side of the heat collector 4, that is, in the area between the upper end of the heat collector 4 and the drum 17. In addition, in the illustrated example, as means for reciprocating the trolley 1, a towing rope 16 and a drum 17 are used.
and means using the reversible motor 18 are shown,
As another known means for movement on such an inclined surface, although not shown, the reversible motor 18 is placed directly on the trolley 1, and the wheels 3 are formed into pinions, which are connected to the reversible motor 18. Therefore, it is possible to easily form the rails 2 and make the truck 1 self-propelled.

Since the device of the present invention is constructed as described above, the cleaning work of the solar heat collector can be automatically performed at any time using a relatively simple device. Furthermore, all operations are performed remotely, so there is no need to approach the installation site, and there is no danger associated with conventional methods. Also,
Since the cleaning operation with a liquid is immediately followed by the operation of drying the surface, the undesirable phenomenon in conventional devices in which the liquid remaining on the cleaned surface acts as an adsorption medium for dust and the like again occurs. It has the excellent effect of being completely prevented and performing efficient cleaning work, allowing the solar collector to fully demonstrate its performance.

[Brief explanation of drawings]

The drawing is a perspective view of one embodiment. 1... Trolley, 2... Rail, 3... Wheels, 4...
...Solar heat collector, 5...Limit switch, 6...
...Spray nozzle, 7...Air injection nozzle, 8,
9... Main distribution pipe, 10, 11... Inlet pipe, 12,
13... Flexible tube, 14... Pulley, 15... Support wire, 16... Traction rope, 17... Drum, 1
8...Reversible motor.

Claims (1)

[Scope of utility model registration request] It is equipped with a trolley that can be remotely and automatically moved back and forth along the surface of the solar heat collector, and on the trolley there is a spray nozzle for spraying a cleaning liquid onto the surface of the collector, and a spray nozzle for drying the sprayed liquid. and air injection nozzles for injecting air are provided at front and rear positions separated by an appropriate interval along the moving direction of the truck, and the liquid supply source, the air supply source, and each nozzle on the truck are provided. An automatic cleaning device for solar heat collectors connected to each other by flexible tubes.