JP2003004336A - Air conditioning system utilizing ground heat and zeolite - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system with the low running cost by combining the property of zeolite and the ground heat. SOLUTION: There are provided a zeolite tank 11 in which zeolite is contained, a condenser 12 for condensing water vapor discharged from zeolite in the zeolite tank, which is embedded in the ground for condensing the foregoing water vapor with ground heat, a vaporizer embedded in the ground, which is adapted to contain water 15 for supplying water vapor to zeolite in the zeolite tank and for containing water condensed in the condenser, a heating section 20 for heating zeolite in the zeolite tank, a heating air supply section for exchanging heat possessed by zeolite in the zeolite tank with heat possessed by air incorporated from the outside of a house and supplying it to the house, and a cooling air supply section for exchanging cold heat of the vaporizer 14 with the air incorporated from the outside of the house and supplying it to an under-floor cobblestone layer formed under a floor of the house or in a room of the house.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating / cooling system for buildings (houses, buildings, etc.) that uses geothermal heat and zeolite.

[0002]

2. Description of the Related Art Conventionally, cooling / heating systems utilizing the properties of zeolite have been proposed. For example, JP-A-57
No. 164259 discloses a zeolite tank that contains zeolite and is warmed by solar heat, a condenser that cools water vapor released from the zeolite, an evaporator that contains condensed / liquefied water and supplies water vapor to the zeolite (cold water). (Also serves as a cold storage tank for accumulating), and accumulates warm water heated by the condenser (water supplied from tap water to cool the condenser and heated by condensation heat during liquefaction) Cooling and heating including a heat storage tank, a cooling heat exchanger for exchanging cold water and air in the evaporator, and a heating heat exchanger for exchanging heat between hot water and air in the heat storage tank. Proposing equipment.

[0003]

However, the conventional cooling and heating equipment using zeolite proposed by the above-mentioned Japanese Patent Laid-Open No. 164259/1982 proposes to pipe water from a water source in order to cool the condenser. However, this has a problem that the running cost of the equipment becomes excessive. Further, according to the conventional heating / cooling equipment using zeolite proposed by JP-A-57-164259, the entire cooling / heating equipment installed on the ground because the condenser and the evaporator are installed on the ground. There is a problem that the size of is too large.

On the other hand, the present applicant filed Japanese Patent Application No. 11-29488.
In the air conditioning system utilizing the geothermal heat, which has been conventionally proposed in No. 6, etc., for example, as shown in FIG.
Underground pipe 5 consisting of double pipe of inner pipe 5b and inner pipe
Is buried in the direction of gravity up to a depth of several meters underground, and the outside air introduced into the gap 5d between the outer pipe 5a and the inner pipe 5b is allowed to exchange heat with the geothermal heat while lowering this air, Via the inner pipe 5b and the pipe 9, it is moved to the underground pipe 16 which is also a double pipe of the outer pipe 16a and the inner pipe 16b, and the gap 6d therein.
After exchanging heat with the geothermal heat in the inside, pipe 7, fan 8,
And the underfloor stone layer 2 (the foundation rising part 1 of the building and the concrete of the building) through the perforated pipe 13 (a plurality of holes 3a for discharging the air into the underfloor stone layer 2 are formed) It is made up of a large number of quarry stones and charcoal for humidity control filled in a space below the floor that is several hundred mm high surrounded by the floor and the ground. Layer, which is capable of efficiently accumulating in the layer, and the air is further heat-exchanged with the geothermal heat in the underfloor layer 2 to control and clean the humidity, and then the building. Is supplied to the room.

[0005] Such an air conditioning system using geothermal heat has the following problem: "The temperature change in the ground is approximately 13 to 19 ° C, which is almost constant throughout the year. Therefore, for example, the underground temperature stays at a low temperature of 17 ℃ even in the summer.) ", So the running cost is low and the natural power is used to provide air conditioning that is environmentally friendly and friendly to the health of residents. However, since the temperature of geothermal heat stays within a certain range (about 13 to 19 degrees Celsius as described above), it is unavoidable that the width of heating and cooling air using geothermal heat is limited to some extent. However, there is a problem that it is difficult to realize a strong cooling and heating effect.

The present invention has been made by paying attention to such problems of the prior art. By combining the properties of zeolite with geothermal heat, the running cost is low,
It is an object of the present invention to provide an air-conditioning system that can reduce the size of equipment on the ground and is environmentally friendly because it uses natural power, and is also friendly to the health of residents, and can realize a powerful air-conditioning effect.

[0007]

A cooling and heating system using geothermal heat and zeolite according to the present invention for solving the above-mentioned problems of the prior art includes a zeolite tank containing zeolite, and a zeolite in the zeolite tank. A condenser for condensing water vapor released from the, in order to condense the water vapor by geothermal heat, a condenser buried in the ground, for supplying water vapor to the zeolite in the zeolite tank An evaporator which contains water and is configured to contain the water condensed by the condenser, the evaporation being buried in the ground from the ground to a depth of about 1 m or more in the gravity direction. And a heating unit for heating the zeolite in the zeolite tank, for example, an exhaust heat supply unit of a boiler, a heater, or a solar heat collector, and a door. The air taken in from the zeolite by exchanging heat with the heat of the zeolite in the zeolite tank, an air supply unit for heating to supply the underfloor chestnut bed formed in the interior of the building or under the floor of the building, and from the outside. An air supply unit for cooling, which heat-exchanges the taken-in air with the cold heat of the evaporator and supplies the air to the underfloor chestnut layer formed in the room of the building or under the floor of the building. It is what

Further, in the cooling and heating system using geothermal heat and zeolite of the present invention, the zeolite tank, the condenser, and the evaporator are constructed as one closed system which is isolated from the outside. .

Further, in the cooling and heating system using geothermal heat and zeolite of the present invention, in the vicinity of the evaporator (for example, within about 1 m, about 2 m, about 3 m, about 4 m, or about 5 m), from the ground. It is an underground pipe buried in the ground to a depth of about 1 m or more in the direction of gravity. It moves the air from the outside with the surrounding geothermal heat while moving the air inside, and the heat-exchanged air is used for the heating. An underground pipe for supplying to the air supply unit or the cooling air supply unit is provided.

Further, in the cooling and heating system using geothermal heat and zeolite according to the present invention, an outside air introducing portion for taking in outdoor air, the outside air introducing portion, the heating air supplying portion and the cooling air supplying portion. And a damper configured to supply air from the outside air introduction unit to only one of the heating air supply unit and the cooling air supply unit, and a predetermined temperature in winter or outside air. When the temperature is lower than the temperature, the outside air from the outside air introduction unit is supplied to the heating air supply unit, and when the temperature of summer or outside air is higher than a predetermined temperature, the outside air from the outside air introduction unit is And a control unit for controlling the damper so that the air is supplied to the cooling air supply unit.

Further, in the cooling and heating system using geothermal heat and zeolite of the present invention, a first valve for opening and closing between the evaporator and the zeolite tank and between the condenser and the evaporator are provided. Based on the temperature of the zeolite output from the temperature sensor for detecting the temperature of the zeolite in the zeolite tank, the first valve and the second valve for opening and closing Valve control means for controlling the opening and closing of the second valve.

Further, in the cooling and heating system using geothermal heat and zeolite of the present invention, a first valve for opening and closing between the evaporator and the zeolite tank, and between the condenser and the evaporator are provided. A second valve for opening and closing, a timing means for generating time information, and an opening and closing means for controlling the opening and closing of the first valve and the second valve based on the output from the timing means. And valve control means.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Hereinafter, Embodiment 1 of the present invention will be described. FIG. 1 is a schematic configuration diagram showing a cooling and heating system using geothermal heat and zeolite according to the first embodiment. In FIG. 1, 11 is, for example, a box-shaped (or cylindrical) zeolite tank in which zeolite (for example, powder) is stored (this zeolite tank 11 is, as described later, from water 15 in the evaporator 14 to steam). Together with the heat pump to construct a heat pump). The zeolite tank 11 is provided with a heating unit 20 for temporarily (periodically) heating the zeolite. In the first embodiment, the heating unit 20 is provided when the user is driving a hot water supply device such as a boiler.
It is configured by a pipe or the like for supplying the exhaust heat to the zeolite (In the first embodiment, the heating unit 20 is not limited to the pipe for supplying the exhaust heat of the hot water supply device such as the boiler. , For example, a conventionally known solar collector or an electric heater can be used).

Further, in FIG. 1, reference numeral 12 is a condenser (condenser) for condensing water vapor released from the zeolite in the zeolite tank 11. The condenser 12
Is buried underground in order to condense steam from the zeolite by geothermal heat. The condenser 12 is connected to the zeolite tank 11 by a pipe 13.

Further, in FIG. 1, reference numeral 14 is an evaporator containing water 15 for supplying steam to the zeolite in the zeolite tank 11. Further, the evaporator 14 is configured so that the water condensed by the condenser 12 is dropped and stored. In the first embodiment, the outer frame of the evaporator 14 is several meters above the ground (for example, about 1
m, about 2 m, about 3 m, about 4 m, or more than about 5 m) extending in the direction of gravity toward the depth of the cylinder (bottom surface is closed and a vertical recess is formed in the center) )
Formed as a tank.

Further, the evaporator 14 is the condenser 12
Is connected to the pipe 16 through the pipe 16.
A valve 17 for opening and closing an intermediate portion of the pipe 16 is provided in the middle of. Further, the evaporator 14 is
It is connected to the zeolite tank 11 via a pipe 18, and a valve 19 for opening and closing an intermediate portion of the pipe 18 is provided in the middle of the pipe 18.

Further, in FIG. 1, reference numeral 21 is an underground pipe which is inserted in the central concave portion of the cylindrical evaporator 14 in the direction of gravity. The underground pipe 21 includes a first pipe 21a for taking in outdoor air and exchanging heat with cold heat of the water 15 in the evaporator 14 while lowering the air, and a bottom portion of the first pipe 21a. And a first pipe 21b for supplying heat to the interior of the building or to the underfloor chestnut layer of the building by exchanging heat with the cold heat of the water 15 in the evaporator 14 while raising the air. . The first pipe 21a and the second pipe 21b are partitioned by a partition plate indicated by reference numeral 22 in the figure.

A plurality of holes (not shown) are provided in the upper end of the first pipe 21a for introducing outdoor air.
The plurality of holes form an outside air introducing portion 21aa for taking in outdoor air into the first pipe 21a. Further, the second pipe 21b is in communication with the pipe 23, and the air heat-exchanged with the water 15 in the evaporator 14 by the second pipe 21b passes through the pipe 23 to the interior of the building. Alternatively, it is supplied to the underfloor stone layer of the building.

The portion of the first pipe 21a below the outside air introducing portion 11a is connected to the pipe 24 via a damper 25. The pipe 24 is installed so that the air passing through the pipe 24 can exchange heat with the zeolite in the zeolite tank 11. When the position of the damper 25 is switched to “the position indicated by the broken line 25 ′ in FIG. 1 (the position indicated by the reference numeral 25 in FIG. 3)”, the air introduced from the outside air introduction portion 21aa is the pipe 2
4 where it is heat exchanged with the zeolite,
Further, when the damper 26 in the figure is opened (the damper 26 is switched to the position shown in FIG. 3), it is supplied to the interior of the building or the underfloor stone layer of the building. In the first embodiment, the pipe 24 is provided with a large number of fins to increase the surface area thereof so that the air moving therein can efficiently exchange heat with the zeolite (or. , May be formed into a bellows shape to increase the surface area). Further, in the first embodiment, the pipe (the pipe heated by the exhaust heat of the boiler) forming the heating unit 20 has an outer circumference of the pipe 24 for passing the air while exchanging heat with the zeolite. It is arranged in a state of being wound in a substantially coil shape on the surface or in the vicinity thereof.

In the system shown in FIG. 1 described above, the fan (see reference numeral 8 in FIG. 6) is driven at all times or only during the time period set by the user, and the air from the outside is introduced by the fan into the outside air introducing section. Introduced from 21aa,
It moves in the underground pipe 21 or the pipe 24 (by switching the dampers 25 and 26) and moves to the interior of the building or the underfloor stone layer.

Next, FIG. 2 is a schematic block diagram showing an electrical configuration of the first embodiment. In FIG. 2, 31 is a microcomputer, 32 is the zeolite tank 1
A zeolite temperature sensor for detecting the temperature of the zeolite in 1 and inputting it to the microcomputer 31, 33 is, for example, an outside air temperature sensor attached in the vicinity of the outside air introducing portion 21aa of the first pipe 21a, An outside air temperature sensor for detecting the temperature and inputting it to the microcomputer 31, 34 is a timekeeping unit (timer) for generating time information and inputting it to the microcomputer 31, and 35 is a microcomputer for generating calendar information. Three
1 is a calendar unit for inputting to 1, and the reference numeral 36 is based on the output from the microcomputer 31.
A damper drive unit for driving the opening and closing of the motors 5, 26,
Reference numeral 37 is a valve drive unit for opening and closing the two valves 17 and 19 based on the output from the microcomputer 31.

Next, the summer operation of the first embodiment will be described with reference to FIGS. First, in the first embodiment,
1, the zeolite tank 11, the condenser 12, the evaporator 14, the pipe 13 connecting the zeolite tank 11 and the condenser 12, the pipe 16 connecting the condenser 12 and the evaporator 14, and the evaporator 14 The pipe 18 that connects the zeolite tank 11 and the zeolite tank 11 constitutes one vacuum closed system that is isolated from the outside air. In the first embodiment, when the equipment of the system of FIG. 1 is installed, after the zeolite tank 11, the condenser 12, the evaporator 14 and the like are formed as a closed system, the inside thereof is evacuated by a vacuum pump. To do so.

It is assumed that it is summer and the calendar unit 35 in FIG. 2 outputs a signal indicating that it is summer. Then, the damper drive unit 36 is controlled by the microcomputer 31, and the two dampers 25 and 26 are arranged at the summer positions as shown in FIG. In this case, the air introduced from the outside air introduction part 21aa is sent by the damper 25 into the underground pipe 21 inserted into the concave portion of the evaporator 14, and further, the damper 26 makes an indoor or underfloor stone. It is moved to a layer (reference numeral 2 in FIG. 6).

Now, when the zeolite in the zeolite tank 11 is heated by the boiler exhaust heat from the heating section 20, the zeolite releases the water contained therein as water vapor (if the release of this water vapor continues to some extent, Zeolites will be dehydrated). The water vapor released from the zeolite enters the condenser 12 via the pipe 13,
It is liquefied here. The condenser 12 is buried in the ground as described above, and is constantly kept at a temperature within a predetermined range by geothermal heat. Therefore, when the high temperature steam from the zeolite is sent to the condenser 12, the steam is cooled and liquefied here. Further, when the water vapor from the zeolite is liquefied in the condenser 12, the heat of condensation is released, and the heat of condensation is released to the ground around the condenser 12 (heat exchange with the surrounding geothermal heat is performed. ).

Further, as described above, the zeolite tank 1
When the zeolite in 1 is heated to a predetermined temperature or higher by the boiler exhaust heat from the heating unit 20, a detection signal indicating that is output from the zeolite temperature sensor 32 of FIG. 2 to the microcomputer 31. Upon receipt of this detection signal, the microcomputer 31 controls the valve drive unit 37 to switch the valve 17 of FIG. 1 from the closed state to the open state (at this time, the valve 19 of FIG.
Is closed). As a result, the water produced by liquefying the water vapor from the zeolite by the condenser 12 as described above is dropped into the evaporator 14 through the pipe 16 and the valve 17, and is stored therein.

Next, the heating of the heating section 10 by the exhaust heat of the boiler or the like is stopped, and the temperature of the zeolite in the zeolite tank 11 is set to a predetermined value depending on the ambient temperature (such as the ambient air temperature that has dropped at night). When the temperature falls below the temperature, a detection signal indicating this is output from the zeolite temperature sensor 32 of FIG. 2 to the microcomputer 31. Upon receipt of this detection signal, the microcomputer 31 controls the valve drive unit 37 to switch the valve 17 of FIG. 1 from open to closed and to switch the valve 19 of FIG. 1 from closed to open. At this time,
As described above, the zeolite dehydrated by being heated and continuously releasing the water vapor tries to absorb the water vapor from the surroundings. Therefore, the water 15 in the evaporator 14
Water vapor is absorbed by the zeolite through the pipe 18 and the valve 19. When the water 15 in the evaporator 14 is actively vaporized in this manner, the heat of vaporization causes
The temperature of the water 15 in the evaporator 14 is lowered (on the other hand, at the same time,
The zeolite in the zeolite tank 11 absorbs heat from the water together with steam to be heated to a high temperature).

As described above, in the summer, the two dampers 2
5, 26 and a fan (see reference numeral 8 in FIG. 6) are set so that the air from the outside air introducing portion 21aa passes through the underground pipe 21 inserted into the concave portion of the evaporator 14. Therefore, in the summer, the air introduced from the outside air introduction part 21aa is cooled by heat exchange with the water in the evaporator 14 whose temperature is lowered by the heat of vaporization as described above. "Cooling air" is supplied to the room or the underfloor stone layer.

Next, the winter operation of the first embodiment will be described with reference to FIG. When a signal indicating that it is winter is output from the calendar unit 35 in FIG. 2, the microcomputer 31 controls the positions of the dampers 25 and 26 so that the air from the outside air introducing unit 21aa is the zeolite as shown in FIG. Switching is performed so as to pass through a pipe 24 arranged to be capable of heat exchange with the zeolite in the tank 11. As described above for the summer, after the zeolite in the zeolite tank 11 is heated by the heating unit 10 to release water vapor from the zeolite for dehydration, the valve 19 is switched to the open state to remove the water 15 from the evaporator 14. When the water vapor is absorbed by the zeolite in the zeolite tank 11, the zeolite absorbs the heat from the water together with the water vapor and is heated to a high temperature (conversely, the water 15 in the evaporator 14 is cooled by the heat of vaporization). Be done).

In the winter, as described above, the air from the outside is supplied to the fan (see reference numeral 8 in FIG. 6) and the dampers 25, 26.
As a result, the zeolite in the zeolite tank 11 is moved so as to pass through the pipe 24 which is installed so as to be capable of heat exchange with the zeolite, so that it is heated by being heat-exchanged with the zeolite whose temperature has been raised as described above. The heated "heating air" is supplied to the room or the underfloor layer.

As described above, in the first embodiment, the condenser 12 is buried in the ground and is always kept in advance at a constant low temperature by the geothermal heat. It is not necessary to supply the cooling water for cooling the condenser from the tap water as in Japanese Patent No. 164259). Further, in the first embodiment, since the evaporator 14 is buried in the ground, even when a large amount of water is stored in the evaporator 14, it is possible to prevent the size of the equipment on the ground from becoming excessively large. . Further, in the first embodiment, since the evaporator 14 is buried in the ground, when the water vapor in the water 15 in the evaporator 14 is absorbed by the zeolite and the water 15 is cooled, the water 15
Since the evaporator 45 is held in the ground where the evaporator 45 is kept at a low temperature even in summer, the cold temperature of the water 15 in the evaporator 14 can be retained without being heated by the ambient outside air temperature. Become. Therefore, there is no need to "install a heat insulating material for insulating the outside air from the outer peripheral surface of the evaporator installed on the ground" as in the conventional case, and the facility cost can be reduced. Here, the operation of the valves 17 and 19 in the first embodiment will be explained. In the first embodiment, when releasing water vapor from the zeolite, the valve 17 is in the “open” state and the valve 19 is in the “closed” state. When the zeolite absorbs the vapor from the water 15 in the evaporator 14, the valve 19 is “open” and the valve 17 is “closed”. Further, when the high temperature accumulated in the zeolite or the cold temperature accumulated in the evaporator 14 is to be maintained as it is, both the valve 17 and the valve 19 are in the “closed” state. In the first embodiment,
The valves 17 and 19 are never opened.

In the first embodiment, the microcomputer 31 controls the dampers 25 and 26 for summer or winter based on the calendar signal from the calendar unit 35 shown in FIG. 2 indicating whether the present time is summer or winter. In the present invention, for example, the outside air temperature sensor 33 of FIG. 2 detects the outside air temperature, and when the outside air temperature is equal to or higher than a predetermined temperature, the microcomputer 3 is controlled.
1 may control the dampers 25 and 26 to the position for the summer, and the microcomputer 31 may control the dampers 25 and 26 to the position for the winter when the outdoor temperature is below a predetermined temperature.

Further, in the first embodiment, the microcomputer 31 controls the positions of the valves 17 and 19 based on the signal from the zeolite temperature sensor 32 of FIG. 2 (if the temperature of the zeolite exceeds a predetermined temperature, the valve 19 is closed and the valve 17 is switched from closed to open.
If the temperature of the zeolite falls below a predetermined temperature, the valve 17
The valve 19 is switched from open to closed and the valve 19 is switched from closed to open. However, in the present invention, for example, the microcomputer 31 causes the valve 17 to operate on the basis of the time signal from the timer 34 in FIG. And 19 may be controlled. For example, assuming that the time period in which the user uses the boiler is almost constant every day, the time period in which the user uses the boiler (the time period in which the exhaust heat of the boiler is supplied to the zeolite tank 11 by the heating unit 20) is reached. , Based on the time information from the clock unit 34,
The microcomputer 31 closes the valve 19,
The valve 17 is switched from closed to open. When the boiler is not used, the microcomputer 31 causes the valve 1 to operate based on the time information from the timekeeping unit 34.
7 may be closed to open, and the valve 19 may be switched from closed to open.

Embodiment 2. Next, referring to FIGS.
A second embodiment of the present invention will be described. In FIG. 4, FIG.
The same parts as those in the conventional example are designated by the same reference numerals. In FIG. 4, 5 is an underground pipe having a double pipe structure of an outer pipe 5a and an inner pipe 5b. The underground pipe 5 is buried in the ground to a depth of several meters (about 1 to 5 m) or more. A plurality of holes are formed in the upper end portion of the underground pipe 5 in the figure, and the holes form an outside air introducing portion 5c for introducing outside air.

The outside air is supplied to the outside air introducing portion 5c by a fan (see reference numeral 8 in FIG. 6) not shown in FIG.
Is introduced into the outer pipe 5a from the inside and is exchanged with geothermal heat while descending in the outer pipe 5a. When the air reaches the bottom of the outer pipe 5a, it enters the inner pipe 5b, rises therein, and further moves in the pipe 7 in the right direction in the drawing.

In the second embodiment, the right end portion of the pipe 7 in the drawing is, as shown in FIG. 4, a pipe 51 and a pipe 5.
2 and the damper 53. Further, the right ends of the pipes 51 and 53 in the figure are connected via a damper 54 and a pipe 3 extending in the underfloor quarry stone layer 2 of the building, as shown in FIG.

Further, as shown in FIG. 4, the pipe 51 is arranged so as to be in contact with the zeolite tank 41 in which zeolite (for example, powder) is enclosed, that is, so that heat exchange with the zeolite is possible. Specifically, as shown in FIG. 5, the zeolite tank 41 has a cylindrical through hole at the center in the longitudinal direction (horizontal direction in FIG. 4), and the inside of the cylindrical through hole is The pipe 51 (a pipe for moving the air from the outside) is inserted. Further, the pipe 51 is provided with a large number of fins so as to increase the surface area in order to increase the efficiency of heat exchange between the air moving inside and the zeolite (or formed into a bellows shape to increase the surface area). May be increased).

On the outer peripheral surface of the pipe 51 for moving the air from the outside, a heating portion 40 composed of a pipe heated by the exhaust heat of the boiler is provided (FIG. 4). As shown in FIG. 3, the pipe forming the heating unit 40 is installed in a substantially coiled state around the outer peripheral surface of the pipe 51). This heating part 4
0 is used to heat the zeolite in the zeolite tank 41 to a high temperature by utilizing the exhaust heat of the boiler. In FIG. 5, reference numeral 40a denotes an exhaust tube installed at the end of the pipe that constitutes the heating unit 40. In the second embodiment, the heating unit 4
The pipe heated by the exhaust heat of the boiler constituting 0 may be wound around the outer peripheral surface of the zeolite tank 41 and installed.

As shown in FIG. 4, the pipe 52 is arranged so as to come into contact with an evaporator (underground tank) 45 in which water 46 is enclosed, that is, to exchange heat with the water 46. ing. Specifically, as shown in FIG. 5, the center of the evaporator 45 in the longitudinal direction (horizontal direction in FIG. 4) is a cylindrical through hole, and the inside of the cylindrical through hole is The pipe 52 is inserted. In addition, in FIG. 5, 55 is a cock for draining water.

The zeolite tank 41 and the evaporator 45 are connected to each other via a pipe 43, a condenser 42 and a valve 44, as shown in FIG.
The condenser 42, the valve 44, and the evaporator 45 are all buried in the ground. The zeolite tank 41 and the evaporator 45 are connected to each other via a pipe 47 and a valve 48, as shown in FIG.

In the second embodiment, the zeolite tank 41, the pipe 43, the condenser 42, and the evaporator 4 are used.
5 and the pipe 47 are configured as a closed system (vacuum closed system). The zeolite tank 41, the pipe 43, the condenser 42, the evaporator 45, and
The operation of the closed system including the pipe 47 is almost the same as that described in the first embodiment.

Next, the operations of the zeolite tank 41, the condenser 42, and the evaporator 45 of the second embodiment will be described. First, when the zeolite is heated by the heating unit 40 (see the zeolite temperature sensor 32 or the timer unit 34 in FIG. 2).
When a signal indicating that is output from), the microcomputer 31 opens the valve 44 to guide the steam from the zeolite to the condenser 42, where the steam is cooled and liquefied, and the inside of the evaporator 45. Drop and store. After that, when the temperature of the zeolite drops to a predetermined temperature due to the influence of the ambient temperature of the surroundings (see the zeolite temperature sensor 3 in FIG.
3 or when a signal indicating that is output from the time counting unit 34), the microcomputer 31 opens the valve 48 (closes the valve 44), and the water 4 of the evaporator 45 is discharged.
The water vapor from 6 is absorbed by the zeolite, and the water 46 in the evaporator 45 is cooled by the heat of vaporization (conversely, at the same time, the zeolite in the zeolite tank 41 absorbs the heat together with the water vapor from the water 46. Temperature is raised).
The above operation is repeated in a predetermined cycle.

On the premise of the above operation, first in summer (when it is detected that it is summer or the temperature of the outside air is high by the output from the calendar unit 35 or the outside air temperature sensor 33 in FIG. 2). 2), the microcomputer 31 of FIG. 2 positions the dampers 53 and 54 to the position shown in FIG. 4, that is, to send the air from the underground pipe 5 into the pipe 52 in contact with the evaporator 45. To
Control switching. Then, the air from the underground pipe 5 is sent to the pipe 52 via the pipe 7,
As described above, the water in the evaporator 45 is cooled by heat exchange with the water 46 whose temperature is lowered, and the cooled air for cooling is pipe 3 and the hole 3a formed in the pipe 3.
Is supplied to the underfloor quarry stone layer 2 via the.

Further, in winter (when it is detected that it is winter or the temperature of the outside air becomes low by the output from the calendar unit 35 or the outside air temperature sensor 33 in FIG. 2), the micro in FIG. The computer 31 places the dampers 53 and 54 at the positions indicated by the broken lines 53 ′ and 54 ′ in FIG. 4, that is, the position for sending the air from the underground pipe 5 into the pipe 51 that is in contact with the zeolite tank 41. Then, switching control is performed. Then, the air from the underground pipe 5 passes through the pipe 7 and the pipe 51.
And is heated by the heat exchange with the zeolite whose temperature has been raised as described above in the zeolite tank 41, and the heated air for heating is formed in the pipe 3 and the pipe 3. It is supplied into the underfloor quarry stone layer 2 through the hole 3a.

As described above, in the second embodiment, as in the first embodiment, the water vapor released from the zeolite heated by the heating unit 40 is condensed at the lower part of the drawing by opening the valve 44. To the condenser 42, where it is heat-exchanged with the geothermal heat, cooled and liquefied (the condenser 42 is
Since it is buried in the ground, it is always kept at a constant low temperature by geothermal heat). Further, after steam is released from the zeolite and the zeolite is dehydrated, the valve 48 is opened, so that the steam is absorbed from the water 46 of the evaporator 45 to the zeolite and the temperature of the water 46 is lowered by the heat of vaporization. (At this time, the temperature of the zeolite is raised at the same time).

As described above, in the second embodiment, as in the first embodiment, the condenser 42 is buried in the ground and is always kept at a constant low temperature by the geothermal heat. It is not necessary to supply the cooling water for cooling the condenser from a water supply or the like as in (JP-A-57-164259). In the second embodiment, the first embodiment
Similarly to the above, since the evaporator 45 is buried in the ground, even when a large amount of water is stored in the evaporator 45, it is possible to prevent the size of the equipment on the ground from becoming excessively large. Further, in the second embodiment, as in the first embodiment, since the evaporator 45 is buried in the ground, the water vapor in the evaporator 45 is absorbed by the zeolite to cool the water 46. At this time, since the cold temperature of the water 46 is kept in the ground where the evaporator 45 is kept at a low temperature even in the summer, the cold temperature of the water is not heated at the ambient temperature and the cold temperature holding power in the evaporator 45 is increased. Like Therefore, there is no need to "install a heat insulating material for insulating the outside air from the outer peripheral surface of the evaporator installed on the ground" as in the conventional case, and the facility cost can be reduced.

[0046]

As described above, according to the present invention, by combining the properties of zeolite and geothermal heat, the running cost is low, the size of the equipment on the ground can be reduced, and the natural power is utilized, which is environmentally friendly. In addition, it is possible to provide an air conditioning system that is kind to the health of residents and that can realize a powerful air conditioning effect. In particular, zeolite can be used as a heat pump as many times as possible by using it in a closed system and avoiding contact with nitrogen etc. to prevent deterioration. The running cost can be minimized.

Further, in the present invention, since the condenser is buried in the ground and the condenser is always kept in advance at a constant low temperature by the geothermal heat, the conventional cooling and heating equipment using zeolite ( The cooling water does not need to be specially supplied from a water source to cool the condenser as in the cooling / heating equipment disclosed in Japanese Patent Laid-Open No. 57-164259, and the running cost of the system can be greatly reduced.

Further, according to the present invention, since the evaporator is buried in the ground, even if a large amount of water is stored in the evaporator, the size of the equipment on the ground becomes excessive. This makes it possible to reduce the size of the entire heating and cooling system using geothermal heat and zeolite.

Further, according to the present invention, since the evaporator is buried in the ground, when the water vapor in the evaporator is absorbed by the zeolite and the water in the evaporator is cooled, the water in the evaporator is cooled. The cold temperature continues to be maintained at a low temperature even in the summer due to the geothermal heat of the surroundings, so that the cold temperature holding power in the evaporator is increased. That is, when the evaporator is installed on the ground as in the conventional case, in order to prevent the water in the evaporator, which has been cooled by the zeolite, from being gradually heated by the ambient outside air temperature, It was necessary to equip the outer peripheral surface of the evaporator installed on the ground with a heat insulating material for insulating the outside air. "However, in the present invention, this need is eliminated, and the facility cost can be reduced.

Further, in the present invention, in winter, the cold temperature obtained by cooling the water in the underground evaporator by the zeolite is not used for cooling the air. However, in a one-year cycle, the cold temperature of the evaporator accumulated in the above-mentioned winter is transmitted to the ground in the winter and lowers the underground temperature in the vicinity (peripheral) area of the evaporator. , In the next summer, the underground temperature in the vicinity (peripheral) area of the evaporator will be lower than that in other areas, and the underground pipe installed in the vicinity (peripheral) area of the evaporator (Fig. The effect of cooling the air from the outside by the reference numeral 5 of 4) is further increased.

[Brief description of drawings]

FIG. 1 is a schematic diagram for explaining the configuration and operation of a first embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the first embodiment.

FIG. 3 is a schematic diagram for explaining a winter operation according to the first embodiment.

FIG. 4 is a schematic diagram for explaining a second embodiment of the present invention.

5 is a partial cross-sectional view of FIG.

FIG. 6 is a diagram showing a conventional air conditioning system utilizing geothermal heat.

[Explanation of symbols]

1 foundation rising part 2 Underfloor stone layer 3,7,13,16,18,24,51,52 Pipe 3a hole 5 underground pipe 5c, 11aa Outside air introduction section 11,41 Zeolite tank 12,42 condenser 14,45 evaporator 15,46 water 17,19,44,48 valves 20,40 heating part 25, 26, 53, 54 damper 31 Microcomputer 32 Zeolite temperature sensor 33 Outside air temperature sensor 34 Timer (timer) 35 Calendar Department 36 Damper drive 37 Valve drive

Claims (6)

[Claims] 1. A zeolite tank containing zeolite, and a condenser for condensing water vapor released from the zeolite in the zeolite tank, wherein the water vapor is condensed in the ground to condense the water vapor by geothermal heat. An embedded condenser and an evaporator configured to store water for supplying water vapor to the zeolite in the zeolite tank, and to store water condensed by the condenser. And an evaporator embedded in the ground from the ground to a depth of about 1 m or more in the direction of gravity, and for heating the zeolite in the zeolite tank, for example, an exhaust heat supply part of a boiler, a heater, or solar heat collecting The air taken in from the outside and the heating part consisting of a heater are exchanged with the heat of the zeolite in the zeolite tank to form inside the building or under the floor of the building. The heating air supply unit for supplying the underfloor chestnut stone layer and the air taken in from the outside with the cold heat of the evaporator to exchange heat with the underfloor chestnut formed in the interior of the building or under the floor of the building. A cooling and heating system using geothermal heat and zeolite, characterized by comprising: a cooling air supply unit for supplying to a stone layer. 2. The geothermal heat and zeolite according to claim 1, wherein the zeolite tank, the condenser, and the evaporator are configured as one closed system that is isolated from the outside. Air conditioning system. 3. The underground pipe according to claim 1 or 2, wherein the underground pipe is buried in the ground in the vicinity of the evaporator to a depth of about 1 m or more in the direction of gravity from the ground. An underground pipe for supplying heat to the heating air supply unit or the cooling air supply unit by exchanging heat with the surrounding geothermal heat while moving the inside of the pipe is provided. Air conditioning system using geothermal and zeolite. 4. The outdoor air introducing portion for taking in outdoor air according to claim 1, or between the outdoor air introducing portion and the heating air supplying portion and the cooling air supplying portion. A damper configured to supply air from the outside air introduction unit to only one of the heating air supply unit and the cooling air supply unit, and the temperature of winter or outside air is lower than a predetermined temperature. At this time, the outside air from the outside air introduction unit is supplied to the heating air supply unit, and, in summer or when the temperature of the outside air is higher than a predetermined temperature, the outside air from the outside air introduction unit is supplied to the cooling air. A cooling and heating system using geothermal heat and zeolite, comprising: a control unit for controlling the damper so that the damper is supplied to the supply unit. 5. The first valve for opening and closing between the evaporator and the zeolite tank, and the opening and closing between the condenser and the evaporator according to claim 1. A second valve for detecting the temperature of the zeolite in the zeolite tank, based on the temperature of the zeolite output from the temperature sensor, the first valve and the second valve A cooling and heating system using geothermal heat and zeolite, characterized by comprising valve control means for controlling opening and closing of a valve. 6. The method according to claim 1, further comprising a first valve for opening and closing the evaporator and the zeolite tank, and a space between the condenser and the evaporator. A second valve for opening and closing, a timing means for generating time information, and a valve for controlling opening and closing of the first valve and the second valve based on an output from the timing means. A cooling and heating system using geothermal heat and zeolite, characterized by comprising: control means.