JPS624825Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to an air conditioner that stores solar heat to perform heating operation as well as cooling operation.

Technical background of the idea and its problems Traditionally, air conditioners that utilize solar heat have been used.
That is, a solar heat collector is installed, for example, on the roof of a house, and the warm air obtained there is guided to a heat storage tank and stored therein. Then, as needed, warm air is guided from the heat storage tank to the air-conditioned room to perform heating.

As described above, this type of air conditioner that utilizes solar heat is only used for heating operation, and is of no use in the summer. Therefore, it is necessary to provide a separate device for summer operation, such as a heat pump type air conditioner as an auxiliary heat source, and natural energy cannot be fully utilized.

Purpose of the invention The object of the invention is to provide an air conditioner that enables heating operation in winter and cooling operation by storing cold air at night in summer, thereby improving air conditioning efficiency.

Summary of the invention This invention provides an outside air inlet that communicates with the outside in the middle of a heat storage circulation circuit that stores solar heat, and a first inlet that opens and closes the outside air inlet or the heat storage circulation circuit as needed. , a second switching damper is provided, and at night the outside air is radiated by a solar heat collector and converted into cold air, which is then stored as a heat source during cooling operation.

Embodiment of the invention A first embodiment of the invention is shown in FIGS. 1 to 4. In the figure, 1 is a house, and a solar heat collector 3 is disposed on the surface of the roof 2 that is most likely to receive solar heat. This solar heat collector 3 communicates with an air inlet plenum duct 4 provided at the lower end of the slope and an air outlet plenum duct 5 provided at the upper end of the slope, so that air as a heat medium can circulate inside. . A filter 6 is provided in the air outlet plenum duct 5 and faces a first duct 8 that accommodates a heat collection fan 7 . This first duct 8 is arranged below the air outlet plenum duct 5 and the first floor of the house 1. It communicates with the heat storage tank 9. A second duct 11 that is opened and closed by a heat collection damper 10 is located in the middle.
is connected, which communicates with the air inlet plenum duct 4. Second duct 11 and heat storage tank 9
An air-conditioned room 12 on the first floor and an air-conditioned room 13 on the second floor, which constitute the house 1, are provided between the two. Each of these air-conditioned rooms 12, 13 is provided with an air outlet 15, 15 on the ceiling surface thereof, which communicates with an air conditioning unit 14, which will be described later, and a return grill 16, 16 is provided on the lower part of each wall surface.

The air conditioning unit 14 has a suction port 17 communicating with the first duct 8 as shown in FIG.
An air blowing fan 18 is disposed through the air blowing fan 18, and a plenum chamber 19 is provided in the air blowing direction. Plenum room 1
An air outlet body 21 with an air conditioning damper 20 attached thereto is protruded from the upper end surface of the air outlet 9, and these air outlets 15, 15
It communicates with the air flow through the blow-off ducts 22, 22. Further, an auxiliary heat source chamber 24 partitioned by a partition plate 23 is provided below the suction port 17 . This auxiliary heat source chamber 24 is provided with an auxiliary blower fan 25 and an auxiliary heat exchanger 26, which need only be operated during abnormal weather or as desired.
Configure a heat pump type refrigeration cycle.

The auxiliary heat source chamber 24 of the air conditioning unit 14 is connected to an auxiliary duct 27, which communicates with a third duct 28, as shown in FIG. This third duct 2
Reference numeral 8 is provided between the heat storage tank 9 and the air inlet plenum duct 4 so that they communicate with each other. Further, an outside air inlet 29 is opened in the outer wall of the house 1, and a first switching damper 30 and a second switching damper 31 are vertically supported with a common pivot point. These first and second switching dampers 30,
31 is rotatable within the third duct 28, so that it can be opened and closed.

As shown in FIG. 3, the heat storage tank 9 has communication ports 32 and 33 opened at both left and right ends of the tank body 9a, and a network fence 3 is installed between these ports.
The heat storage bricks 35 positioned at 4, 34 are filled. The heat storage brick 35 is designed as shown in FIG. 4, and a plurality of guide holes 36 are provided regularly in all directions. 35 such heat storage bricks...
The guide holes 36 must communicate with the flow ports 32 and 33 by stacking them in the tank body 9a and arranging them in an orderly manner.

Next, the operation of the above embodiment will be explained. In winter, especially when there is sunlight irradiation, the heat collection damper 10 is set to the b position and the first duct 8 is opened.
The first switching damper 30 is set to the d position and the second switching damper 31 is set to the f position, the outside air passage port 29 is closed, and the third duct 28 is opened. When the solar heat collector 3 absorbs solar heat and its temperature exceeds a set value, the heat collection fan 7 is driven to rotate. The air warmed by the solar heat collector 3 is led to the heat storage tank 9 via the air outlet plenum duct 5 and the first duct 8, as shown by solid arrows in the figure, and warms the heat storage bricks 35. In other words, heat is stored. The air that has passed through the heat storage tank 9 and has been deprived of heat is led to the third duct 28, and is led back to the solar heat collector 3 via the air inlet plenum duct 4. Then, it is heated and circulated through the heat storage circulation circuit 40, which is the circuit described above.

During cloudy weather in winter or at night, the heat collection fan 7 is stopped and the blower fan 1 of the air conditioning unit 14 is turned off.
Drive 8. The warm air in the heat storage tank 9 is sucked up by the blower fan 18 as shown by the broken line arrow in the figure, and is sent to the air-conditioned rooms 12 on the first and second floors from the air outlets 15, 15 via the plenum room 19 and the air ducts 22, 22. ，
Air is blown to 13. Therefore, each air-conditioned room 12,
13 effective heating can be done. The amount of heating can be adjusted by adjusting the air conditioning damper 20. Each room 1
The air heated by 2, 13 is returned to the return grill 16, 1.
6 through a third duct 28 in a direction opposite to the heat storage circulation circuit 40 and returns to the heat storage tank 9. Then, the heat from the heat storage bricks 35 is absorbed again and circulated through the air conditioning circulation circuit 50, which is the circuit described above. Note that since air is guided into the heat storage tank 9 in the forward and reverse directions in the heat storage circulation circuit 40 and the air conditioning circulation circuit 50, the warmest air is always led out to the air conditioning circulation circuit 50.

During the summer, especially at night, the heat collection damper 10 is rotated to the b position, and the first and second switching dampers 30 and 31 are rotated to the c and e positions, respectively, to open the first duct 8 and open the outside air ventilation port. Open 29. The third duct 28 will be closed in the middle. When the solar heat collector 3 becomes less than the set value, the heat collection fan 7 is driven, and the outside air is supplied to the solar heat collector 3 from the outside air inlet 29 through the air inlet plenum duct 4.
be led to. The outside air radiates heat through the solar heat collector 3, lowering its temperature and converting it into cold air. This cold air is guided from the first duct 8 to the heat storage tank 9, where it is stored. Since the temperature of the air from which heat has been removed has increased, it is discharged from the third duct 28 to the outside through the outside air inlet 29. In this way, the outside air obtained in the middle of the heat storage circulation circuit 40 is converted into cold air and stored in the heat storage tank 9.

When cooling is required, such as during the daytime in summer, the heat collection fan 7 is stopped and only the second switching damper 31 is rotated to the f position to prevent outside air from entering the third duct 28 from the outside air ventilation port 29. . and air conditioning unit 14
The blower fan 18 is driven to guide cold air to the air conditioning circulation circuit 50. The air-conditioned rooms 12 and 13 on the first and second floors can be efficiently cooled. The cool air whose temperature has increased is guided to the heat storage tank 9 through the third duct 28, where the temperature is lowered again, and then circulated to each air-conditioned room 12, 13.

FIG. 5 shows a second embodiment of the invention. The difference from the first embodiment in FIG. 2 is that an auxiliary switching damper 25a is provided as a substitute for the auxiliary blower fan 25. When using an auxiliary heat exchanger 26, the auxiliary switching damper 25a is placed at the solid line position. What is necessary is to drive the ventilation fan 18 as follows. (Please note that the above
The same parts as those in the embodiment will be given the same numbers and the explanation will be omitted. ) Effects of the invention This invention enables the range of use of an air conditioner equipped with a single heat storage tank and utilizing solar heat to be expanded from conventional heating operation only to cooling operation, making full use of natural energy. This has the effect of improving air conditioning efficiency at low running costs.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view of a house equipped with an air conditioner showing a first embodiment of the present invention, and FIG. 2 is a schematic vertical cross-sectional view of an air conditioning unit that is the main part of the air conditioner.
FIG. 3 is a schematic vertical sectional view of a cold storage tank, FIG. 4 is a perspective view of a heat storage brick, and FIG. 5 is a schematic vertical sectional view of an air conditioning unit showing a second embodiment of the present invention. 3... Solar heat collector, 9... Heat storage tank, 40...
Heat storage circulation circuit, 50... Air conditioning circulation circuit, 30...
1st switching damper, 31...2nd switching damper.

Claims (1)

[Scope of utility model registration request] A heat storage circulation circuit that stores heat by circulating a heat medium between a solar heat collector placed on the roof of a house and a heat storage tank placed under the floor, and a heat storage circulation circuit that stores heat from the heat storage tank of this heat storage circulation circuit. an air conditioning circulation circuit that guides the air to the air-conditioned room; an outside air inlet that is provided in the middle of the heat storage circulation circuit to communicate with the outside; By opening and closing the circulation circuit, solar heat storage, heating,
An air conditioner comprising a first switching damper and a second switching damper that switch between cold storage and cooling, in which outside air is radiated by a solar heat collector and converted into cool air.