JPH0122842Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a solar heat collector that constitutes a heat pump cycle by sequentially connecting a compressor, a condenser, an expansion valve, and a solar heat collector (evaporator). Regarding a roof-integrated solar heat collector.

(Prior Art) As an alternative to conventional solar heat collectors that use water or air as a heat medium, a heat pump type heat collector that uses fluorocarbon or the like as a heat medium has been proposed. This device uses a so-called heat pump cycle that utilizes the evaporation and condensation of a heat medium, so by adjusting the heat medium evaporation temperature in the heat collector (evaporator) to below the outside temperature, it not only generates heat from the sun but also heats the air. It can also absorb heat from the outside air, making it possible to collect heat even when there is little or no solar radiation.

In such a device, it is desirable to increase the contact area between the heat collector and the outside air as much as possible so that heat from the outside air can be actively absorbed, and to have a structure with good ventilation. In addition, the heat collector of this type of device is generally installed on the roof of a house, but in this case, it is important that the heat collector does not spoil the appearance of the house and does not cause an increase in construction costs. This is desirable.

Therefore, as shown in Figs. 12 to 15, the methods proposed to satisfy these conditions are as follows.
There is a roof-integrated solar heat collector that integrates the heat collector with the roof material and gives the roof material the function of a heat collector.

In this heat collector, a heat collector a for collecting solar heat and heat from outside air is used as a roofing material, and this heat collector a
A plurality of sheets are laid on the roof sheathing board b from the eave side to the ridge side. Each heat collector a is sequentially connected by engaging engaging parts c and d formed at its front end and rear end, respectively, and its legs e are connected to core wood f on the roofing board b. It is fixed on the roof by nailing through the insulation material g.
Therefore, this type of heat collector has an aesthetically pleasing appearance as it is no different from ordinary roofing materials, and is also advantageous in terms of construction costs since it is integrated with the roofing material. It is.

As shown in FIGS. 14 and 15, the heat collector a constituting the heat collector consists of a heat collecting plate h and heat medium pipes i, i through which a heat medium such as fluorocarbon is passed. The tubes i and i are each provided on the back surface of the heat collecting plate h. In addition, the one shown in FIG. 15 is one in which the heat collecting plate h and the heat medium pipes i, i are brought into close contact with each other, and the thermal conductivity between the heat collecting plate h and the heat medium pipes i, i is improved. It is a diagram.

When installing such a heat collector on the roof, since the heat collector also collects heat from the outside air, as shown in Figure 13, it is necessary to provide ventilation between the heat collector a... and the roof board b. A space j is provided for doing so. This space j is
It is formed between the core trees f... and is communicated with the outside through openings (not shown) provided in the eave portion and the ridge portion. During heat collection operation, the temperature of the heat collector a becomes lower than the outside air temperature, so that the temperature of the air in the space j becomes lower than the outside air temperature, and natural convection occurs in the space j along the slope direction of the roof. As a result, outside air is introduced into the space j through the opening of the ridge portion, thereby allowing air circulation and ensuring good heat exchange between the heat collector a and the outside air.

(Problem that the invention aims to solve) However, in reality, the difference between the temperature of the air in space j and the outside temperature is not large, so natural convection is small, and the circulation flow rate of air in space j is extremely small. be. As a result, the temperature of space j decreases,
Since the difference between the temperature of the heat collector a and the heat collector a becomes small, there is a problem that the heat collector a cannot sufficiently collect heat from the air in the space j.

(Means for Solving the Problems) In the roof-integrated solar heat collector of the present invention, a heat collector is formed by providing a heat medium pipe on the back side of a heat collecting plate used as a roofing material, and the heat collecting body is A space is formed between the heat collector and the roofing board by connecting a plurality of heat collectors, and an air flow port is provided in the upright portion to communicate the space with the outside.

(Function) As described above, the present invention provides a raised part at the connection between the heat collectors, and provides air circulation in this raised part to communicate with the outside and the space on the back side of the heat collector. Since the opening is provided, the wind blowing on the roof surface enters the back side of the heat collector through this air circulation opening.

(Example 1) This embodiment is shown in FIGS. 1 to 5.

The heat collector 2 constituting the heat collector 1 is used as a roofing material and acts as an outdoor heat exchanger for a heat pump cycle. This heat collector 2 is a heat collector plate 3 for collecting solar heat and air heat.
and heat medium pipes 4, 4 for passing a heat medium such as fluorocarbon as piping for the heat pump cycle,
Heat medium pipes 4, 4 are arranged on the back surface of the heat collecting plate 3. The heat collecting plate 3 and the heat medium pipes 4, 4 are made of a material with good thermal conductivity, and the heat collecting plate 3 and the heat medium pipes 4, 4 may be integrated, or may be made separately. It may be a fixed object.
When both the heat collecting plate 3 and the heat medium pipes 4, 4 are made of aluminum, it is preferable to create them by integral extrusion molding.

The surface of the heat collecting plate 3 is treated with dark-colored alumite or coating, which has excellent weather resistance and durability, to improve the absorption rate of solar radiation. The front end of the heat collecting plate 3 is bent downward into a hook shape, and the tip thereof is bent to have a substantially mountain-shaped cross section to form an engaged portion 5 . Further, at the rear end of the heat collecting plate 3, an inverted T-shaped mounting leg 6 is provided extending downward, and a rising portion 7 is provided extending upward. A bifurcated engaging portion 8 that engages with the engaged portion 5 is formed toward the front. A plurality of substantially rectangular air flow holes 9 as shown in FIG. 4 are provided in the upright portion 7 evenly in the width direction of the heat collector 2. As shown in FIG. Note that this air circulation port 9 is not limited to the one shown in FIG. 4, but as shown in FIG.
Engagement portions 8 are provided at multiple locations in the width direction of the heat collector 2.
It may be formed by cutting out a substantially rectangular shape from the to the upright portion 7, and the shape is not limited to the illustrated example.

As shown in FIG. 1, the heat collectors 2 as described above are successively placed on the roof surface starting from the eaves side of the roof.
Each heat collector 2 engages its engaged portion 5 with the engaging portion 8 of the front adjacent heat collector 2, and attaches the mounting leg 6 to the nail 10.
It is fixed by nailing it onto the core wood 12 through a heat insulating material 11 made of neoprene rubber or the like. The heat insulating material 11 insulates between the heat collector 2 and a dew receiving plate 13, which will be described later, provided on the core wood 12.
This is to prevent dew condensation on the back side of the dew receiving plate 13.

In the case of a direct expansion type heat collector, since the heat collector is used as an evaporator in the heat pump cycle, the temperature of the heat medium such as fluorocarbon flowing in the heat medium pipes 4, 4 is generally several degrees lower than the temperature of the outside air. The temperature is set so that it can absorb heat from the outside air as well as solar heat. Therefore, depending on the humidity condition of the outside air, the heat collector 2
In many cases, dew condensation occurs on the heat collector 2, and the dew catcher plate 13 is installed on the roofing plate 1 to catch and dispose of the dew that has adhered to the heat collector 2.
4 and the core tree 12, and a waterproof paper 15 is interposed between the dew receiving board 13, the core tree 12, and the shedding board 14.

A space 16 is formed between the heat collectors 2 and the roofing board 14, and is communicated with the outside through the air circulation ports 9. In addition, the space 16 is the heart tree 12
There is communication between... In addition, in the figure, 17
It is a rafter tree.

(Example 2) This embodiment is shown in FIGS. 6 and 7.

In this embodiment, the upright portion 7 has a front wall 7a and a rear wall 7.
It is formed in the shape of a hollow embankment consisting of a top wall 7c and a top wall 7c, thereby increasing the strength of the heat collector 2 in the rising portion 7. The engagement part 8 is formed by extending the rear wall 7b of the upright part 7 upward, with its tip facing forward, and by providing a gap opening forward between it and the top wall 7c. . The air flow port 9 is
As in the case of Embodiment 1, it may be formed by providing a plurality of openings in the rising portion 7 (front wall 7a and rear wall 7c), and as shown in FIG.
It may be formed by cutting out a substantially rectangular shape from the engaging portion 8 to the rising portion 7 at multiple locations in the width direction. Also in this case, the number and shape of the air flow holes 9 are not limited to the illustrated example.

The other configurations are the same as in the first embodiment.

(Example 3) This embodiment is shown in FIGS. 8 to 11.

In this embodiment, the conventional heat collectors shown in FIGS. 14 and 15 are used, and these heat collectors 2 are connected by an upright member 18 formed separately from the heat collector 2. , this rising member 18 constitutes the rising part 7.

As shown in FIG. 9, the upright member 18 is made by bending a long plate into a substantially U-shaped cross section in the longitudinal direction, bending the top piece into a chevron shape, and then bending the top end upward. It is folded back into a hook shape to form a clamping part 19 that clamps the engaged part 5 of the heat collector 2, while the lower part is bent into a mountain shape to form an insert part 20 that is inserted into the engaging part 8 of the heat collector 2. is forming. Then, on the standing wall 21 of the standing member 18 bent in this way,
A plurality of substantially rectangular air circulation ports 9 are provided along the longitudinal direction.

As shown in FIG. By inserting it into 8, the heat collector 2...
It is installed between the heat collectors 2 and connects adjacent heat collectors 2.

In FIG. 10, a bifurcated clamping portion 19 is formed at the tip of the standing wall 21 facing forward, and the standing wall 21 is
The lower end of 1 is bent forward and the tip thereof is folded back downward to form an insertion part 20.
A plurality of air circulation ports 9 are provided in the vertical wall 21.

FIG. 11 shows the structure shown in FIGS. 8 and 9 in which a hanging piece 22 parallel to the standing wall 21 is provided from the lower rear end of the holding part 19. This hanging piece 22
between the lower end of the heat collector 2 and the tip of the insertion part 20
A gap is provided for allowing the upper piece of the engaging portion 8 to pass through. A plurality of air flow holes 9 are provided in the upright portion 7 and the hanging piece 22.

In addition, in any of the above-described upright members 18, the air flow openings 9 are as shown in FIG.
Clamping portions 19 are provided at multiple locations along the longitudinal direction.
It may be formed by cutting out the vertical wall 21. Furthermore, the shape of the air flow opening 9 is not limited to the illustrated example.

This embodiment has the same structure as the first embodiment except that the heat collector 2 is connected using the upright member 18 as described above.

(Effects of the invention) According to the invention, a roof-integrated solar heat collector can improve the air circulation behind the heat collector, and therefore improve the air heat collection ability from the air behind the heat collector. can be provided.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention,
Figure 1 is a partial cross-sectional view of a roof-integrated solar heat collector.
Fig. 2 is a side view of the heat collector, Fig. 3 is a sectional view taken along the line X-X in Fig. 1, Figs. 4 and 5 are partial perspective views showing the rising part, and Figs. 6 and 7. 6 shows a second embodiment of the present invention, FIG. 6 is a partial perspective view of the upright part, FIG. 7 is a partial sectional view of the roof-integrated solar heat collector, and FIGS. 8 to 11 are examples of implementation of the present invention. Example 3 is shown, FIG. 8 is a partial cross-sectional view of the roof-integrated solar heat collector, FIG. 9 is a partial perspective view of the connecting member, and FIGS. 10 and 11 are partial cross-sectional views showing the connecting part of the heat collector. 12 to 15 show conventional examples, and FIG. 12 is a partial sectional view of a roof-integrated solar heat collector;
FIG. 13 is a sectional view taken along the Y-Y line in FIG. 12, and FIGS. 14 and 15 are side views of the heat collector. DESCRIPTION OF SYMBOLS 1... Roof-integrated solar heat collector, 2... Heat collector, 3... Heat collection plate, 4... Heat medium pipe, 7... Standing part, 9... Air circulation opening, 14... Field Main plate, 18...
... Standing member, 21... Standing wall.

Claims (1)

[Scope of utility model registration request] A plurality of heat collectors each having a heat medium pipe provided on the back side of a heat collector plate used as a roofing material are connected via upright parts to form a space between the heat collectors and the roofing board, and the above-mentioned 1. A roof-integrated solar heat collector, characterized in that an air circulation opening communicating between the outside and the space is provided in the rising part.