JPH0213898Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The invention is based on the invention by selectively connecting an air-type solar heat collector and a heat storage tank that stores heat by the solar heat collector to the same auxiliary heat source. , relates to a solar heat utilization device that can increase the efficiency of solar heat utilization.

[Background technology]

Solar heat utilization devices are known that can directly discharge air heated by solar heat into a room or store it in a heat storage tank and then discharge hot air into the room. Even when the air being used is hotter than the outside temperature, if it is too cold for heating, the system stops using the air, and only uses auxiliary heat sources such as backup electric heaters to air-condition the room. Therefore, solar heat could not be fully utilized.

[Purpose of invention]

The present invention improves the utilization efficiency of solar heat by selectively connecting the solar heat collector and the heat storage tank to the auxiliary heat source. The purpose of the present invention is to provide a solar heat utilization device that can simplify the device and reduce costs by allowing the solar energy to flow through the device.

[Disclosure of invention]

An embodiment of the present invention will be described below based on the drawings.

In the figure, a solar heat utilization device 1 includes an air-type solar heat collector 2 and a heat storage tank 3, and selectively connects the solar heat collector 2 and the heat storage tank 3 with an auxiliary heat source 4 to blow hot air. It is possible to communicate with the port 6.

The solar heat collector 2 has an insulated flat box 11 attached to a notch provided in a slanted roof S, the upper part of which is shielded by a transparent plate 12 such as a glass plate, and a bottom part of the box 11. , spacer 13
A heat collecting plate 14 is installed with a heat collecting plate 14 interposed therebetween, and the heat storage tank 3 is installed between breathable partition plates 16, 16 provided at the front and rear of a heat insulating box 15 whose upper part is covered by a floor body, which is stored in the underfloor space. While being filled with the heat storage material 17, the auxiliary heat source 4 houses, for example, an electric heater 18 in a box 19. In addition to the electric heater 18, various types of auxiliary heat sources, such as those that burn gas, oil, etc., can be used as the auxiliary heat source.

An inlet 8 provided below the solar heat collector communicates with a first suction port 51 that opens in the room R via a first duct 31. Further, the outlet 9 above the solar heat collector 2 is connected to the first fan F1 and the first damper 4.
One end of a second duct 32 is connected to the other end of the second duct 32, and a third duct 33 and a fourth duct 34 are provided at the other end of the second duct 32.

The third duct 33 extends into the underfloor space and communicates with one end of the heat storage tank 3. This third duct 33 has a warm air outlet 6 that opens in the room R.
A fifth duct 35 communicating with the second damper 42 is connected to the fifth duct 35, and the fifth duct 35 has a
A sixth duct 36 is disposed between the second damper 42 and the hot air outlet 6, has the auxiliary heat source 4 therebetween, is provided with a third damper 43, and has one end connected to the third duct 33. Connect the other end. Note that the fourth duct 34 communicates with the other end of the heat storage tank 3 via a fourth damper 44 and a fifth damper 45, and the fourth duct 34 has an opening in the room R and a fourth damper 45. The air outlet 7 is provided with six dampers 46. Further, between the fourth and fifth dampers 44 and 45, a seventh duct 37, which includes a second fan F2 and communicates with the second suction port 52 of the room R, is branched and connected.

However, during solar radiation in winter, when the solar heat collector 2 can obtain high-temperature air necessary for air conditioning, the first fan F1 is activated as shown in FIG. 2a.
and the first damper 41 and the second damper 4
By opening the duct 2 and closing the third, fourth, fifth, and sixth dampers 43, 44, 45, and 46, the hot air from the solar heat collector 2 flows through the second duct 32 and the third duct. It passes through the upstream part of the duct 33 and passes through the fifth duct 35 from the hot air outlet 6 to the room R.
The room R can be air-conditioned. Note that the heat flows back from the first suction port 51 to the solar heat collector 2 through the first duct 31 . Also, when the room R is at a desired temperature during solar radiation and therefore the solar heat collector 2 stores heat in the heat storage tank 3, the first and sixth dampers 41 and 46 are opened as shown in FIG. 2b. and second, third, fourth, and fifth dampers 42, 43, 4
4 and 45 and drive the first fan F1, the solar heat collector 2 conducts to the heat storage tank 3 through the second and third ducts 32 and 33, and stores heat in the heat storage tank. The air from 3 is transferred to the 4th duct 3
After flowing out into the room R from the air outlet 7 at the upstream part of the solar heat collector 4, it returns to the solar heat collector from the first suction port 51 and the first duct 31.

In addition, when the solar heat collector 2 cannot heat the heat sufficiently and the auxiliary heat source 4 is used, the first and third dampers 41 and 43 are opened and the second, fourth, and 5. Sixth damper 42, 44, 4
By closing 5, 46, the solar collector 2
, the second, third, and sixth ducts 32, 33, 36
By selectively connecting the solar heat collector 2 and the auxiliary heat source 4 by connecting them to the hot air outlet 6 provided in the fifth duct 35,
The hot air from the solar heat collector 2 passes through the passage and is heated by the auxiliary heat source 4 before being discharged into the room R.
It also circulates through the first suction port 51 and the first duct 31.

Furthermore, when there is insufficient sunlight or when air conditioning is performed only with the auxiliary heat source 4 at night, the third and fourth dampers 43 and 44 are opened and the second fan F2 is driven, as shown in FIG. 2d. As a result, the air sucked from the second suction port 52 through the seventh duct 37 by the second fan F2 is transferred from the downstream part of the fourth duct 34 to the third duct 33 and the sixth duct 37.
It passes through the duct 36, is heated only by the auxiliary heat source 4, and is then discharged into the room R from the hot air outlet 6.

Further, when performing air conditioning by storing heat in the heat storage tank 3, as shown in FIG. 2e, a fifth damper 45,
By opening the second damper 42 and operating the second fan F2, the second suction port 52 is communicated with the heat storage tank 3 through the upstream portions of the seventh duct 37 and the fourth duct 34, And the heat storage tank 3 is a third
The hot air is connected to the hot air outlet 6 through the downstream part of the duct and the fifth duct 35, and the hot air from the heat storage tank 3 is discharged into the room R. However, when the heat storage in the heat storage tank 3 is not sufficient, As shown in FIG. 2f, by closing the second damper 42 and opening the third damper 43, the heat storage tank 3 is moved through the downstream part of the third duct and the sixth duct 36, and The downstream part of the fifth duct 35 is selectively communicated with the hot air outlet 6, so that the hot air in the heat storage tank 3 can be reheated by the auxiliary heat source 4 and then discharged into the room R. Note that the discharged air flows from the second suction port 52 to the seventh duct 3.
7. Pass through the fourth duct 34 and return to the heat storage tank 3.

In this way, the solar heat collector 2 can select the hot air outlet or the path leading to the hot air outlet 6 via the auxiliary heat source 4, and the heat storage tank 3 can select the hot air outlet 6.
and a route leading to the hot air outlet 6 via the auxiliary heat source 4.

3a to 3f show another embodiment of the present invention using one fan F; in this embodiment, the first
From the embodiment shown in the figure, the first fan F1 is omitted and the first duct 31 is directly connected to the seventh duct 37. As shown in Figure a, by opening the first and second dampers 41 and 42, the room R can be air-conditioned through the second duct 32, third duct 33, fifth duct 35, and hot air outlet 6. , and returns to the solar heat collector 2 through the suction port 52, the seventh duct 37, and the first duct 31. When heat is stored in the heat storage tank 3 by the solar heat collector 2, the first and sixth dampers 41 and 46 are opened (shown in FIG. 3b), and the solar heat collector 4 and the auxiliary heat source 4 are opened. When conducting to the hot air outlet 6,
As shown in FIG. 3c, the first and third dampers 4
Open 1,43.

When air conditioning is performed using the auxiliary heat source 4, the third and fourth dampers 43 and 44 are opened as shown in FIG. 3d. Furthermore, when connecting the heat storage tank 3 directly to the hot air outlet 6, as shown in FIG.
While the damper 42 and the fifth damper 45 are opened, the heat storage tank 3 is opened as shown in FIG. The hot air outlet 6 can be electrically connected to the hot air outlet 6 through the hot air outlet 6.

[Effect of idea]

In this way, the solar heat utilization device of the present invention can be heated by an auxiliary heat source even if the hot air in the solar heat collector or heat storage tank is below the temperature required for air conditioning, and therefore air conditioning using solar heat can be heated. In addition, since the auxiliary heat source can be shared, the device can be simplified and costs can be reduced.

Note that the solar heat utilization device of the present invention can be modified in various ways, such as by using a switching valve at each branch point instead of a damper.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
Figures a to 2f are diagrams showing the effect, Figure 3a
~FIG. 3f is a diagram showing another embodiment of the present invention together with its operation. 2... Solar heat collector, 3... Heat storage tank, 4... Auxiliary heat source, 6... Warm air outlet.

Claims (1)

[Scope of utility model registration request] One end of a second duct 32 with a first damper 41 interposed is connected to the outlet of the pneumatic solar heat collector 2, and a third duct 3 is connected to the other end of the second duct 32.
3. A fourth duct 34 is provided, and the third duct 33 is connected to one end of the heat storage tank 3, and a second damper is connected to the hot air outlet 6 that opens in the room in the third duct 33. 42, and the fifth duct 35 has an auxiliary heat source 4 and a third damper 4 between the second damper 42 and the hot air outlet 6.
3 and one end of which is connected to the third duct 33, and the fourth duct 34 is connected to the fourth damper 4.
4. The fifth damper 45 is electrically connected to the other end of the heat storage tank 3, and the fourth duct 34 is provided with a sixth damper 46 between the fourth damper 34 and the heat storage tank 3. Further, the fourth damper 34 is connected to a seventh duct 37 having a fan between the fourth and fifth dampers 44 and 45 and communicating with the air inlet 52 of the room. At the same time, the inlet of the solar heat collector 2 is connected to the first
The fourth and fifth dampers 44 and 45 of the room suction port 51 or the fourth duct 34 are
In addition, when the first duct 31 is connected to the suction port 51, the second duct is provided with a fan.