JPH0229548A - Use of solar energy and snow removing device - Google Patents

Abstract

PURPOSE:To provide both functions of normal solar energy utilization and snow removal for effective use of facility cost by connecting a heat exchanger to a solar heat exchanger unit installed on a roof, heat-exchanging primary fluid, that flows through the solar heat exchanger, with secondary fluid in the heat exchanging drum, and heating the secondary fluid by an auxiliary heating device when necessary. CONSTITUTION:Primary fluid supplied from a lower header 8 by a pump 3 is heated by solar heat while passing through a solar heat exchanger 1, and introduced into a heat exchanging drum 4 through an upper header 9. The primary fluid is heat- exchanged with the secondary fluid in the heat exchanging drum 4 to decrease its temperature, and returned again to the solar heat exchanger 1 through the lower header 8. On the other hand, the secondary fluid that is raised in temperature in the heat exchanging drum 4 is supplied to room heaters, bath, etc. Next, in case of snow removal, an auxiliary boiler 5 is operated to heat the secondary fluid to raise its temperature. The secondary fluid is heat-exchanged with the primary fluid in the heat exchanging drum 4 to raise the temperature of the primary fluid. The primary fluid releases heat to melt snow while it passes through the solar heat exchanger 1, and is repeatedly circulated in the same manner after heat release.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to solar heat utilization and snow removal equipment, and is particularly applicable to existing houses, making it possible to remove snow from roofs in areas with heavy snowfall. This is related to the structure that was created.

(Prior Art) In areas with heavy snowfall, snow is removed manually to prevent houses from being damaged by the weight of snow that has fallen on roofs.

However, this work was not only carried out on a sloped roof, where the feet could slip, posing a risk of falling, but also requiring the removal of a large amount of snow, making it extremely difficult work.
It was also developing into a social problem.

Therefore, as a solution to this problem, the roof can be made steeply sloped to allow the snow to fall off naturally, underground water can be poured onto the roof to melt the snow, or hot water heated by a boiler can be poured into pipes installed on the back of the roof to melt the snow. Various methods have been proposed or implemented, such as directing indoor heating to the attic and melting snow with the heat released.

(Problem to be Solved by the Invention) However, among the above-mentioned solution methods, the method of flowing groundwater to the roof has the advantage that it can be applied to existing houses;
Since a large amount of groundwater is required, care must be taken not to pump out too much groundwater, and furthermore, caution is required as the water that is drained will refreeze. 6. Also, there is a method of pouring hot water to the back of the roof, and heating in the attic. The method that leads to this is not only extremely difficult to apply to existing houses, but also because it is only operated during the snowy season throughout the year, it is inefficient and equipment costs are not utilized effectively. Maintenance is also not easy.

On the other hand, a method for removing snow from roofs using heat pipes has been proposed, but the equipment costs are high.

[Purpose of the invention]

Therefore, the purpose of the present invention is to provide a system that can be applied to existing houses and has both the function of a normal solar heat utilization device and the function of removing snow that has fallen on the roof, thereby making effective use of equipment costs. Our objective is to provide solar heat utilization and snow removal equipment.

[Structure of the invention]

(Means for Solving Problem 'I) The present invention provides a heat exchanger that is closely attached to the surface of a roof and connects a plurality of heat exchanger units, and a first liquid that flows through the heat exchanger. This device is characterized by comprising a heat exchange tank containing a second liquid that exchanges heat with the second liquid, and an auxiliary heating device that heats the second liquid as necessary.

(Function) Normally, it acts as a normal solar heat utilization device, using solar heat to heat the first liquid flowing in the heat exchanger to raise its temperature, and guide it to the heat exchange tank where it is stored. The second
This second liquid is used for heating and other purposes. In addition, during the snowfall season, the second liquid is heated with an auxiliary heating device to raise its temperature, and the second liquid and the first liquid are exchanged with each other in the heat exchange tank, thereby increasing the temperature of the first liquid. Snow is removed by flowing the liquid to the heat exchanger and melting the snow on the roof using the heat released by the heat exchanger.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram schematically showing an embodiment of the present invention.

In the figure, 1 is a heat exchanger that is attached closely to the surface of the roof 2 of a house and has a plurality of heat exchanger units connected to it, and 3 is a heat exchanger that is connected to cold or hot water (hereinafter referred to as the first 4 is a pump for distributing water (hereinafter referred to as a liquid); 4 is a heat exchange tank that stores water used for heating etc. (hereinafter referred to as a second liquid) and exchanges heat between this and the first liquid; 5 is a second liquid; An auxiliary boiler heats the liquid as necessary to raise its temperature, 6 is a pipe for circulating the first liquid, 7 is a solenoid valve provided in the pipe 6, 8 is a lower header, and 9 is an upper header.

FIG. 2 shows a heat exchange unit. In the same figure.

The heat exchanger unit 10 is formed by casting a black or dark-colored synthetic resin material with a mold or by other appropriate methods, and has a flat bottom surface that is in close contact with the surface of the roof 2. 10a, and a protruding part 10b having a hole lOc protruding from the center of the other surface of the flat plate-like part 10a and penetrating in the longitudinal direction.

Here, a plurality of types of length, width W, and diameter of the hole 10e are standardized from the viewpoint of manufacturing cost, ease of construction, etc. In addition, when a plurality of grooves along the longitudinal direction are provided on the lower surface of the flat plate-shaped portion 10a as necessary and the grooves are bonded to the surface of the roof 2 with an adhesive, the groove may be used as an accumulation of excess adhesive.

FIG. 3 is a side sectional view showing the state in which the heat exchanger 1 is attached to the roof 2. The upper header 9 is installed inside the ridge 2a, and the lower header 8 is installed inside the roof 2 below. Here, an air vent valve (not shown) is attached to the upper ladder 8. A plurality of heat exchangers 1 are connected in parallel between the upper header 9 and the lower header 8, as shown in FIG. This heat exchanger 1 brings the lower surface of each heat exchanger unit 10 into close contact with the surface of the roof 2. In order to achieve this close contact, it is preferable to use an adhesive.

Further, the heat exchanger units 10 are connected to each other by a joint 11 as shown in FIG. This joint 11 has an engaging part that prevents rotation of a tool inserted in the middle, and insertion parts that are inserted into the hole 10c of the heat exchanger unit 10 with a tightening margin on both sides of this engaging part. It has a structure with a through hole. The heat exchanger unit 10 and the upper ladder 9 are connected by a resin pipe 12, and the heat exchanger unit lO
and the lower header 8 are similarly connected by a resin pipe 13. In addition, if necessary, the connection part between the joint 11 and the hole 10c of the heat exchanger unit 10, the connection part between the resin pipe 12 or 13 and the hole 10c
Use an appropriate sealant at the connection to prevent leakage.

On the other hand, the heat exchanger 1 is pressed against the surface of the roof 2 by a pressing member 14 and an adjusting member 15, which are attached between the opposing surfaces of the adjacent tile rods 2b, 2b, as shown in FIG.

As shown in FIG. 7, this push rod 14 is hollow with a semicircular cross section, has a saw-blade-like uneven surface 14a at one end, and has a friction surface 14a at the other end against the side surface of the tile rod 2b. A non-slip contact surface 14b is provided by increasing the size of the contact surface 14b, and a set of two protrusions 14c that correspond to the upper surface of the flat plate part 10a of the heat exchanger unit 10 is provided on the lower surface, and the heat exchanger 1 is installed in multiple sets at a pitch. It has a built-in structure.

Further, the adjusting member 15 has an arc shape exceeding 180' as shown in FIG. 8, and has a contact surface 15a at one end that increases friction against the side surface of the tile bar 2b to prevent it from slipping.
A sawtooth-shaped uneven surface 15b that engages with the uneven surface 14a of the push rod 14 described above is provided on the inner surface of the contact surface 15a along the length direction.

The push rod 14 and adjustment member 15 described above move the heat exchanger 1 to the roof 2.
After attaching the contact surface 14b of the stamping 14 to one of the tile rods 2
Adjustment member 15 is placed on the side of the other tile bar 2b.
Apply the contact surface 15a of the protrusion 1 with appropriate tension and
The uneven surfaces 14b and 15b of the heat exchanger unit 10 are engaged with each other so that the upper surface 4c presses the upper surface of the flat plate portion 10a of the heat exchanger unit 10.

Next, the operation of the solar heat utilization and snow removal device configured as described above will be explained. First, when using solar heat, it is the same as a normal solar heat utilization device. The temperature of the first liquid supplied from the lower header 8 by the pump 3 increases due to solar heat while flowing through the heat exchanger 1. The heat exchanger is then guided to the upper header 9, and from this upper header 9 to the heat exchange tank 4. The first liquid led to the heat exchange tank 4 exchanges heat with the second liquid contained in the heat exchange tank 4, and after the temperature decreases, it is led to the lower header 8 by the pump 3 again, and is again The second liquid, which is guided to the heat exchanger 1 and repeatedly circulated, and whose temperature has increased through heat exchange in the heat exchange tank 4, is supplied to heating 2 kitchens, bathrooms, etc. as needed. Note that the first liquid is an antifreeze solution so that it will not freeze even if the ambient temperature drops below zero degrees. Next, when removing snow, first
The auxiliary boiler 5 is fired to heat the second liquid in the heat exchange tank 4 and raise its temperature. Then, the second liquid and the first liquid are exchanged with each other in the heat exchange tank 4 to increase the temperature of the first liquid. This first liquid whose temperature has increased is guided by the pump 3 to the lower header 8 and further to the heat exchanger 1. Since the first liquid radiates heat while flowing through the heat exchanger 1, the heat exchanger It is possible to melt snow that comes into contact with or in the vicinity of 1. After radiating heat, the first liquid is led to the heat exchange tank 4 via the upper header 9, where it exchanges heat with the second liquid again, and is transferred to the heat exchanger 1 via the lower header 8 again by the pump 3. It is guided and radiates heat. This cycle is then repeated until the snow is removed.

As explained above, the solar heat utilization and snow removal apparatus of the above embodiment can be applied to existing houses because the heat exchanger is attached to the surface of the roof. Furthermore, it can be used as a normal solar heat utilization device, and during the snowy season, snow can be removed from the roof without the need for manpower. Furthermore, it looks better than when a conventional solar heat utilization device is mounted on the roof.

On the other hand, the pressing and adjusting member not only presses the heat exchanger unit against the roof, but also acts as a snow stopper to prevent a large amount of snow from sliding down at once and causing an accident.

Note that the present invention is not limited to the embodiments described above; for example, the heat exchanger unit 10 may be formed of a transparent or light-colored synthetic resin and then painted black;
An electric water heater may be used instead of the auxiliary boiler.

〔Effect of the invention〕

Since the present invention is configured as described above, it can be applied to existing houses, expanding the range of applications, and saving energy by effectively utilizing solar heat. In addition, snow can be removed from the roof without relying on human hands, eliminating heavy labor and accidents associated with removing snow. Moreover, since it is used almost throughout the year, equipment costs can be used effectively.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an overview of an embodiment of the present invention, and FIG. 2 shows a heat exchanger unit IO of an embodiment of the present invention.
a) is a front view, (b) is a side view, FIG. 3 is a side cross-sectional view showing the state in which the heat exchanger of the fourth embodiment of the present invention is installed on the roof, and FIG. 4 is a view in the direction of arrow A in FIG. 3. 5 shows a joint according to an embodiment of the present invention, (a) is a front view, and (b) is a partial view as seen in FIG.
) is a side view, FIG. 6 is a front view showing the state in which the push rod and adjustment member of one embodiment of the present invention are attached, FIG. 7 is the push rod shown in FIG. 6, (a) is a front view, ( b) Side view, No. 8
The figure shows the adjustment member shown in FIG. 6, (a) is a side view, (
b) is a partially cutaway front view; 1... Heat exchanger, 2... Roof 3... Pump, 4... Heat exchange tank 5... Auxiliary boiler, 8... Lower header 9... Upper header,
10... Heat exchanger unit 14... Push rod, (8733) Representative patent attorney 15... Adjustment member Akira (and 1 other person) Ichi Toshiso Diagram (a) (b) Diagram

Claims (3)

[Claims] (1) A heat exchanger that is closely attached to the roof surface and connects multiple heat exchanger units, and a heat exchanger that accommodates a second liquid that exchanges heat with the first liquid flowing inside the heat exchanger. A solar heat utilization and snow removal device comprising an exchange tank and an auxiliary heating device that heats this second liquid as necessary. (2) Use the push rod that presses down the heat exchanger unit from above.
The solar heat utilization and snow removal device according to claim 1, wherein the solar heat utilization and snow removal device is installed between opposing surfaces of adjacent tile rods. (3) A heat exchanger unit made of a synthetic resin material and having a flat plate portion with one surface as a contact surface and a protruding portion having a hole projecting through the center of the other surface of the flat plate portion.