JP2011038489A - Method and device for recovering energy from artificial wind generated by artificial wind power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and device for recovering energy from exhaust air discharged from an artificial wind generator with high efficiency without limiting the drive source of the artificial wind generator and without decreasing the coefficient of performance of the artificial wind generator. <P>SOLUTION: This device for recovering the energy from the artificial wind generated by the artificial wind generator is provided with: the artificial wind generator generating an air flow; a wind mill having a rotating shaft attached with a rotating blade and providing rotational force by the air flow; and a recovery means recovering the energy generated by the rotation of the rotating shaft. The wind mill is a lift type windmill providing the rotational force by lift. An opened portion where the blowing side of the air flow from the artificial wind generator is opened is formed, and the lift type windmill is disposed in the opened portion. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method and apparatus for recovering energy from the exhaust of an artificial wind generator.

  Conventionally, artificial wind generators that generate artificial wind, such as air heat exchangers used in heat pumps, evaporators used in food refrigerators, cooling towers, and the like, have been widely used.

The air heat exchanger used for the heat pump which is one of the artificial wind generators will be described.
A heat pump is used as one of heat source devices such as buildings.
FIG. 6 is a schematic view showing an embodiment of a conventional heat pump, and shows an operation mode during heating.
The heat pump 30 includes a compressor 32 that compresses refrigerant, a four-way valve 34 that switches between a cooling cycle and a heating cycle, a water heat exchanger 36 that heats or cools water by exchanging heat between the refrigerant and water, an expansion valve 38, and outside air An air heat exchanger 40 that takes heat away from the air or dissipates heat to the outside air is provided, and these are connected to a pipe 42.
The water heat exchanger 36 is provided with a water introduction pipe 44, and water can be introduced into the water heat exchanger 36 through the introduction pipe 44.

An operation during heating of the heat pump 30 having such a configuration will be described. Refrigerants such as Freon and ammonia that have been compressed by the compressor 32 into high-temperature and high-pressure gas are guided to the water heat exchanger 36 through the four-way valve 34. The refrigerant guided to the water heat exchanger 36 loses heat and changes into a high-pressure liquid by exchanging heat with water introduced into the water heat exchanger 36 through the introduction pipe 44.
At this time, the water introduced into the water heat exchanger 36 through the introduction pipe 44 becomes hot water by exchanging heat with the refrigerant that has become the high-temperature and high-pressure gas in the water heat exchanger 36 and is used for heating. .

  The refrigerant that has lost heat in the water heat exchanger 36 and has changed to a high-pressure liquid is guided to the expansion valve 38, and is decompressed by the expansion valve 38 to be changed to a low-pressure liquid.

  The refrigerant changed to a low-pressure liquid by the expansion valve 38 is guided to the air heat exchanger 40. The low-pressure liquid refrigerant guided to the air heat exchanger 40 evaporates by taking heat from the outside air, and changes into a gas. At this time, the outside air deprived of heat is exhausted to the atmosphere by the blower 41 as exhaust.

  The refrigerant changed to gas in the air heat exchanger 40 is returned to the compressor 32 through the four-way valve 34, and is compressed again by the compressor 32.

  Next, the operation at the time of cooling of the heat pump 30 shown in FIG. 6 will be described. At the time of cooling, the four-way valve 34 is switched, and the refrigerant compressed by the compressor 32 is guided to the air heat exchanger 40 through the four-way valve 34, dissipates heat to the outside air, and changes to a high-pressure liquid. At this time, the radiated outside air is exhausted to the atmosphere by the blower 41 as exhaust.

  The refrigerant that has radiated heat to the outside air by the air heat exchanger 40 and changed to a high-pressure liquid is guided to the expansion valve 38, and is decompressed by the expansion valve 38 to be changed to a low-pressure liquid.

The refrigerant that has been changed to a low-pressure liquid by the expansion valve 38 is guided to the water heat exchanger 36. The low-pressure liquid refrigerant guided to the water heat exchanger 36 exchanges heat with water introduced into the water heat exchanger 36 through the introduction pipe 44 to cool the water into a low-pressure gas. It is returned to the compressor 32 and compressed again.
At this time, the water introduced into the water heat exchanger 36 through the introduction pipe 44 becomes cold water by exchanging heat with the refrigerant that has become the low-pressure liquid in the water heat exchanger 36 and is used for cooling.

  In the heat pump as shown in FIG. 6, the air heat exchanger 40 discharges the outside air that has been deprived of heat by the refrigerant during heating, and the outside air that has radiated heat to the refrigerant during cooling. In particular, in a large-capacity heat pump device, a large amount of air is passed through the air heat exchanger in order to reduce the size and improve the efficiency of the air heat exchanger. Although depending on the type of the blower, for example, when the blower 41 is an axial flow blower of 1000φ to 2000φ, the average wind speed from the exhaust pipe at the blower outlet reaches 8 m / sec to 15 m / sec. This wind speed is an appropriate wind speed for generating windmill power using artificially generated wind. In addition, the electric power input to drive the air heat exchanger blower is about 8 to 15% of the total input of the heat pump device, and without reducing the performance and efficiency of the blower from this exhaust air. If the power can be recovered, it is considered that the efficiency (coefficient of performance) of the heat pump can be improved comprehensively.

  However, the exhaust gas exhausted from the air heat exchanger constituting the heat pump has not been effectively used so far, and it cannot be said that the energy of the exhaust gas is sufficiently utilized.

  In addition, as with the exhaust discharged from the air heat exchanger that constitutes the heat pump, the artificial wind generators that can generate other artificial winds, such as an evaporator and a cooling tower, can sufficiently utilize the energy of the exhaust. It is a situation that cannot be said to be made.

  As an example of utilizing the energy of exhaust discharged from an air heat exchanger that is one of artificial wind generators, for example, paragraph [0010] of Patent Document 1 includes a wind power generation unit, and this wind power generation The present invention relates to an air conditioner configured to supply an output of a unit to an inverter for driving a compressor or an outdoor fan, and the air blown upward from the air blowing port through the heat exchanger by the operation of the outdoor fan A technique to be used as wind power for driving a power generation unit is disclosed.

JP 2005-21496 A

  However, the technique disclosed in Patent Document 1 includes a wind power generation unit and supplies the output of the wind power generation unit to an inverter for driving a compressor or driving an outdoor fan. Therefore, it cannot be applied to effectively use the air discharged from the air heat exchanger of the heat pump that does not supply the output of the wind power generation unit to the compressor driving or outdoor fan driving inverter. That is, since the drive source of the heat pump is limited, there is a problem that the application range is narrow.

  Furthermore, in the technique disclosed in Patent Document 1, the wind turbine constituting the wind power generation unit is a nacelle type and the wind receiving direction is horizontal, whereas the wind turbine is blown out from the air outlet through the heat exchanger. Air is blown to the nacelle-type windmill obliquely from below. That is, since the wind receiving direction of the wind turbine constituting the wind power generation unit is different from the air blowing direction of the air blown from the air blowing port through the heat exchanger, the driving of the wind turbine of air blown from the air blowing port through the heat exchanger There is a problem that the effect of contributing to is very small.

  Therefore, in view of the problems of the prior art, the present invention is not limited to the drive source of the artificial wind generator, and exhaust exhausted from the artificial wind generator without reducing the performance and efficiency of the artificial wind generator. It is an object of the present invention to provide a method and apparatus for recovering energy with high efficiency.

In order to solve the above-mentioned problems, in the present invention, an artificial wind generator that generates an air flow, a wind turbine that has rotating blades attached to a rotating shaft and obtains rotational force by the air flow, and a recovery that recovers energy from the rotation of the rotating shaft In the device for recovering energy from the artificial wind generated by the artificial wind generator provided with the means, the windmill is a lift type windmill that obtains rotational force by lift, and opens the airflow side of the airflow from the artificial wind generator An open portion is provided, and the lift type wind turbine is disposed in the open portion.
Here, the artificial wind generating device means a device that artificially generates an air flow, for example, an air heat exchanger used in a heat pump, an evaporator used in a food refrigerator, a cooling tower, a vehicle For example, tunnel exhaust.
Examples of the lift type windmill include a Darius type windmill, a straight Darius type windmill, a gyromill type windmill, a cross flow type windmill, and a propeller type windmill.

Thereby, the energy of the airflow discharged from the artificial wind generator is recovered by driving the windmill with the airflow generated by the artificial wind generator and recovering the energy generated by driving the windmill by the recovery means. Can do.
In addition, the said recovery means can mention the generator driven by rotation of the rotating shaft of a windmill, and when a recovery means is a generator, the energy which the airflow discharged | emitted from an artificial wind generator recovers as electric power. .

Further, the wind turbine is a lift type wind turbine that obtains rotational force by lift, and the lift type wind turbine is disposed in the open portion provided on the air flow side of the artificial wind generator, so that the artificial wind generator The air blowing direction and the wind receiving direction of the windmill completely coincide with each other, and therefore the contribution of the airflow generated by the blower to the rotation of the windmill is extremely large. Further, by disposing the windmill as a lift-type windmill in the open portion, unlike a drag-type windmill having a large airflow resistance factor, the resistance of the windmill to block the airflow from the artificial wind generator (static pressure loss) The element that becomes is very small.
Therefore, energy can be recovered from the air discharged from the artificial wind generator with high efficiency and used for power generation, etc., and the performance and efficiency of the artificial wind generator are not reduced. Moreover, the drive source of the artificial wind generator is not limited.

Further, while the artificial wind generator is driven, an air flow is stably generated from the artificial wind generator. Therefore, it is possible to stably drive the windmill that receives the airflow generated by the artificial wind generator and rotates, and thus it is possible to stably drive energy recovery means such as a generator to recover energy.
Furthermore, when there is an existing artificial wind generator, the present invention can be implemented by providing the windmill in the direction of the airflow of the artificial wind generator. In other words, when there is an existing artificial wind generator, there is an advantage that the present invention can be implemented without modification of the existing artificial wind generator.

Further, the area of the rotation locus drawn by the rotor blades on a plane perpendicular to the airflow direction of the airflow of the artificial wind generator including the rotating shaft may be larger than the cross-sectional area of the airflow outlet of the airflow of the artificial wind generator. .
Furthermore, an angle formed by an inclined line connecting the outermost end of the air outlet and the outermost end of the rotation locus and an extended line extending from the outer end of the air outlet in the air flow direction is within 10 °. It is preferable that the rotary blades are accommodated in the interior.
Here, the area of the rotation trajectory drawn by the rotor blade on a plane perpendicular to the air flow direction of the artificial wind generator described above is the area of the rotation trajectory drawn by the rotor blade on a plane perpendicular to the air flow direction. It will be the widest one.
As a result, the airflow generated by the artificial wind generator reliably reaches the rotor blade without flowing outside the rotation locus of the rotor blade. Therefore, since all of the airflow generated by the artificial wind generator can be used for driving the windmill, the energy of the airflow generated by the artificial wind generator can be collected more efficiently.

  Moreover, it is good to set so that the center part of the said rotary blade may enter in the projection area of the said ventilation opening. And when using an axial-flow type blower for the artificial wind generator, the wind speed distribution is different between the peripheral part of the blower opening and the axial center part of the blower, the wind speed is the fastest within the projected area, and the distribution is substantially uniform. Place the center of the windmill at the position. In general, the farther away from the center of the air outlet, the more the airflow from the air outlet spreads while diffusing at an angle of about 10 °, and the wind speed becomes slow, so the center of the windmill is arranged as close to the center of the air outlet as possible. There is a need.

In the air heat exchanger that is one of the artificial wind generators, the blower of the air heat exchanger generally has a small heat pump heat output, but a plurality of fans are installed when the capacity is large. In addition to the installation method of one windmill for each blower, for the purpose of increasing the capacity, connect the rotating shaft of the windmill using a universal shaft joint, etc., and connect multiple windmills to efficiently increase the capacity. Is also possible. In addition, it is possible to install a standardized windmill in combination in order to eliminate the need to manufacture the windmill according to the air volume of the blower.
On the other hand, for air heat exchangers with a large number of small blowers arranged, a hopper (enclosure) that matches the size of the windmill is provided with an enclosure so that the wind speed does not disperse, so that it is applied to the rotor blades of the windmill. It is also possible to make it.
Further, such a configuration is not limited to the case where the artificial wind generator is an air heat exchanger, and can also be applied to other artificial wind generators.

  Further, as an invention of a method for recovering energy from the exhaust of the artificial wind generator, a method of recovering the energy of the artificial wind generated by the artificial wind generator, the air flow exhausted from the artificial wind generator, A lift-type wind turbine composed of a rotating shaft arranged perpendicularly or parallel to the air flow direction and a rotor blade attached to the rotating shaft is driven, and is discharged from the artificial wind generator by driving the rotating shaft. It is characterized by recovering exhaust energy.

  As described above, according to the present invention, the driving source of the artificial wind generating device is not limited, and the efficiency and efficiency of the artificial wind generating device are reduced without reducing the performance and efficiency of the artificial wind generating device. A method and apparatus for recovering energy can be provided.

1 is a perspective view of a heat pump according to Embodiment 1. FIG. It is a side view of a windmill and an axial blower concerning Example 1. 1 is a schematic plan view of an axial blower according to Embodiment 1. FIG. 6 is a schematic layout diagram of a heat pump according to Embodiment 2. FIG. FIG. 6 is a layout diagram of a wind turbine and a heat pump according to a second embodiment. It is the schematic which shows one form of the conventional heat pump, and is common also in Example 1 and Example 2. FIG. It is a perspective view of the evaporator concerning Example 3. FIG. It is an A direction arrow directional view in FIG. It is a B direction arrow directional view in FIG.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Not too much.

  FIG. 1 is a perspective view of a heat pump according to the first embodiment. Since the components and operation of the heat pump are the same as those of the conventional heat pump described with reference to FIG. 6, the description thereof will be omitted, and the same components as those in FIG.

  In FIG. 1, the heat pump 30 is formed of a machine casing 20 and an air heat exchanger casing 22. The machine casing 20 houses a compressor 32, a four-way valve 34, a water heat exchanger 36, an expansion valve 38, and an accessory device such as a motor and piping that constitute the heat pump 30. The air heat exchanger casing 22 houses an air heat exchanger 40 that constitutes the heat pump 30, and an axial blower that can blow upward the air discharged from the air heat exchanger 40 at the upper part thereof. 2 is provided. Further, although not shown in FIG. 1, a Darrieus type windmill that is driven by the air flow from the axial flow fan 2 is installed on the upper portion of the axial flow fan 2 provided in the air heat exchanger casing 22.

The configuration of the wind turbine installed at the top of the air heat exchanger casing 22 will be described with reference to FIG.
FIG. 2 is a side view of the wind turbine and the axial blower according to the first embodiment.
The windmill 4 according to the first embodiment includes a rotating shaft 6 and a plurality of Darrieus blades 8 attached to the rotating shaft 6. The rotating shaft 6 is rotatably supported by the support member 10 at two or more places (two places in FIG. 2). The support member 10 is fixed to the air heat exchanger casing 22 via the support column 12. Moreover, the generator 14 is provided, and when the windmill 4 rotates, the rotational force of the rotating shaft 6 will be transmitted to the generator 14, and electric power will generate | occur | produce.

Next, the arrangement of the windmill 4 will be described with reference to FIGS.
FIG. 3 is a schematic plan view of the axial blower 2 according to the first embodiment.
In FIG. 3, 2 is an axial blower, 2 a is a (fan sleeve) blower opening of the axial blower 2, and 8 a is an outermost outline of the rotation locus in the case of the Darius blade 8 in the horizontal plane including the rotation shaft 6. As shown in FIG. 3, the windmill 4 is arranged so that the outermost part 8 a of the rotation locus of the Darrieus blade 8 covers the entire upper part of the air outlet 2 a of the axial blower 2 when viewed from above.

Further, as shown in FIG. 2, attached from extended line l ₁ of the air blowing port of the axial flow fan 2, the Darius blades 8 on the rotating shaft 6 on the inclined line l ₂ which is inclined outwardly alpha = 10 °. Thus, all of the air flow f discharged from the air heat exchanger 40 and blown upward from the axial flow fan 2 is used to rotate the wind turbine 4. The α is not limited to 10 °, but if α is too small, a part of the air flow f blown from the axial fan 2 reaches the outside of the inclined line l ₂ before reaching the Darius blade 8. As a result, all of the air blown from the blower 2 cannot be used to rotate the windmill 4. On the other hand, if α is too large, the Darrieus blade 8 needs to be enlarged, leading to an increase in the size of the equipment. Therefore, the angle α is preferably within a range of 10 °.

Next, the operation of the heat pump and the wind turbine according to the first embodiment will be described with reference to FIGS.
When the four-way valve 34 is switched and the heating or cooling operation is performed in the heat pump configured in FIG. 6, warm water is generated in the water heat exchanger 36 during heating, and cold water is generated in the water heat exchanger 36 during cooling.

In the air heat exchanger 40, the outside air is deprived of heat by the refrigerant during heating and becomes cold air, and the outside air is radiated from the refrigerant and becomes hot air during cooling.
The warm air or cold air generated in the air heat exchanger 40 is blown upward by the axial blower 2 provided in the air heat exchanger casing 22 in which the air heat exchanger 40 is accommodated.

The warm or cold air is blown upwardly by the axial flow fan 2, the inner inclined line l _2, i.e. flows through the axial flow fan side upwards, to reach the Darrieus blades 8 constituting the wind turbine 4. The Darrieus blade 8 receives the warm air or the cold air and rotates around the rotation shaft 6. The generator 14 is driven by the rotation of the rotating shaft 6 by the wind to generate electricity.
The electric power obtained by the generator 14 is used as follows, for example.
The AC power obtained by the generator 14 is converted into DC power by a rectifier (not shown) that converts AC power into DC power, and is stored in a capacitor (not shown) that stores the DC power. . The electric power stored in the electric storage device can be supplied to other devices that require electric power, or can be used as part of electric power of a motor that drives the compressor 32.

Air heat conventionally discharged as exhaust gas by the structure and operation in which the Darrieus type windmill 4 which is one of the lift type windmills that obtain the rotational force by the lift as described above is disposed in the opening side of the blower side of the axial flow fan 2. The energy of the hot air or cold air generated in the exchanger 40 can be recovered as electric power by the Darrieus type windmill 4, and the energy can be used effectively. Further, the coefficient of performance of the axial blower 2 is not reduced.
While the heat pump 30 is being driven, warm air or cold air is stably generated in the air heat exchanger 40. Therefore, the windmill 4 that rotates by receiving the warm air or the cold air blown by the axial blower 2 can be driven stably, so that electric power can be obtained stably.
Furthermore, when there is an existing heat pump, the present invention can be implemented by providing the windmill 4 in the blowing direction of the axial flow fan that blows hot air or hot air generated in the air heat exchanger 40, and the existing heat pump It is possible to implement the present invention without modification of parts. In particular, when the air heat exchanger and heat pump 30 as shown in FIG. 1 are located outdoors such as the rooftop of a building, the installation is easy.

  When the Darrieus type windmill 4 is installed outdoors, the Darrieus type windmill 4 can receive natural wind and rotate to drive the generator 14 when the heat pump is not driven.

FIG. 4 is a schematic layout diagram of the heat pump according to the second embodiment.
In addition, in Example 2, the same code | symbol is attached | subjected about the same thing as Example 1, and the description is abbreviate | omitted.
As shown in FIG. 4, the machine casing 20 and the air heat exchanger casing 22 can be arranged separately without being integrated. In FIG. 4, the machine casing 20 is arranged on the lower floor of the building 50, and the air heat exchange casing 22 is arranged on the roof of the building 50.

  In this case, between the air heat exchanger 40 housed in the air heat exchanger casing 22 and the four-way valve 34 and the expansion valve 38 housed in the machine casing 20, refrigerant passes through the outside or inside of the building 50. It connects with the piping 42 which distribute | circulates. The piping 42 located outside the machine casing 20 performs heat insulation as necessary. Further, although not shown in FIG. 4, a windmill is disposed on the upper part of the axial flow fan 2 provided in the air heat exchanger casing 22.

FIG. 5 is a layout diagram of the wind turbine and the heat pump according to the second embodiment. In FIG. 5, the machine casing 20 and the pipe 42 are not shown.
The windmill according to the second embodiment is disposed above the axial flow fan 2 in the same manner as the windmill according to the first embodiment shown in FIG. In FIG. 5, unlike FIG. 2, the column 12 is fixed on the roof of the building 50 instead of the air heat exchanger casing 22, but even if fixed to the air heat exchanger casing 22 as in FIG. No problem.
The positional relationship between the Darrieus blade 8 and the axial flow fan 2 is the same as the positional relationship described with reference to FIG.

  About operation | movement of the heat pump and windmill of the above structures, it is the same as that of the heat pump and windmill of Example 1 demonstrated using FIGS. 1-3 and FIG. 6, and the warm air generated in the air heat exchanger 40 or Cold wind is blown upward by the axial blower 2, the windmill 4 is driven by the blown air, and the generator 14 is driven by the rotation of the rotating shaft 6 of the windmill 4 to generate power.

In this way, even when the machine casing 20 and the air heat exchanger casing 22 are separated, the energy of the hot air or cold air generated in the air heat exchanger 40 can be recovered as electric power. Can be used effectively.
Therefore, even in an existing heat pump in which the machine casing 20 and the air heat exchanger casing 22 are arranged at a distance from each other, the present invention can be implemented by providing a windmill. I can say that.

7 is a perspective view of the evaporator according to the third embodiment, FIG. 8 is a view in the direction of arrow A in FIG. 7, and FIG. 9 is a view in the direction of arrow B in FIG.
The EVACON 62 is an apparatus used for condensing refrigerants such as ammonia and chlorofluorocarbon, and other various process gases, and is used in industrial process cooling, food refrigeration equipment, and the like.

In the evaporator 62, the gas to be condensed is passed from the refrigerant gas inlet connection pipe 66a into the tube of the condenser coil that constitutes the coil zone 66 located above the casing 64. Then, water is sprayed from the water nozzle 68 provided above the coil zone 66 to the outer surface of the tube of the condenser coil, and the heat of the gas in the tube of the condenser coil is transmitted to the water sprayed (hereinafter referred to as spray water). By transferring heat to the spray water, the gas in the tube is condensed and discharged from the refrigerant liquid outlet connecting pipe 66b.
Then, by sending air above the fan 72 provided below the coil zone 66, that is, toward the coil zone 66, a part of the sprayed water is evaporated, and the heat transferred to the sprayed water using latent heat of evaporation. Are discharged into the atmosphere as discharge air.
The sprayed water is collected in the water tank 74 and is sent again to the watering nozzle by the watering circulation pump 84 for circulation.
The water droplets contained in the discharge air are separated from the air by the eliminator 76 provided at the discharge air discharge port and collected in the water tank 74.

  Further, as a characteristic configuration of the present invention, a crossflow type windmill 78 driven by the discharge air is installed above the eliminator 76 and at an opening portion in the discharge air blowing direction. The air guide plate 79 is provided to efficiently guide the exhaust air to the crossflow type windmill 78.

The cross-flow type windmill 78 includes a rotating shaft 78a and a plurality of curved plate blades 78b attached to the rotating shaft 78a. The rotating shaft 78a is rotatably supported by the support member 80 at two or more places (two places in FIG. 7). The support member 80 is fixed to an EVA casing 64. Moreover, the generator 82 is provided, and when the windmill 78 rotates, the rotational force of the rotating shaft 78a will be transmitted to the generator 82, and electric power will generate | occur | produce. The electric power generated by the generator 82 is used as electric power for driving the fan 72 via the electric wire and the generator panel 84.
The electric power generated by the generator 82 is not limited to being used as driving electric power for the fan 72, and may be used for other purposes. Further, for example, as shown in FIG. 8, when there are a plurality of fans 72 (72a, 72b, 72c) or the like, the power generated by the generator 82 is used as driving power for one (for example, 72c). It can also be set as the structure to be used. In this case, the fans 72a and 72b are driven by external power such as commercial power.

  In the present embodiment, the crossflow type windmill 78 is provided. However, in the case of a lift type windmill that obtains rotational force by a lift, the crossflow type windmill 78 is replaced with a straight Darrieus type windmill, a gyromill type windmill, or the like. It is also possible to provide a type of windmill.

  Furthermore, the positional relationship between the discharge port of the discharge air and the windmill is the same as the relationship described with reference to FIGS. 2 and 3 in the first embodiment, so that energy can be recovered more efficiently.

With the configuration as described above, the energy of the discharge air from the evaporator 62 that has been discharged as conventional exhaust gas can be recovered as electric power by the crossflow type windmill 78, and the energy can be effectively used. Further, the coefficient of performance of the evaporator 62 including the fan 72 is not reduced.
Further, while the evaporator 62 is being driven, discharge air is stably generated in the evaporator 62. Therefore, it is possible to stably drive the windmill 78 that receives and rotates the discharge air from the evaporator 62, and thus can stably obtain electric power.
Furthermore, when there is an existing evaporator, the present invention can be implemented by providing a lift-type windmill at the opening portion in the blowing direction of the discharge air from the evaporator, and the present invention is implemented without modification of the existing evaporator. It is possible.

  When the crossflow type windmill 78 is installed outdoors, the crossflow type windmill 78 can receive natural wind and rotate to drive the generator 82 when the evaporator is not driven. .

In the above-described Examples 1, 2, and 3, it has been described that the energy of the exhaust air from the air heat exchanger of the heat pump and the air conditioner is recovered by the lift type windmill disposed in the open portion in the blowing direction of the exhaust air.
The present invention is not limited to the recovery of exhaust air energy from an air heat exchanger and an air conditioner of a heat pump, and is also applied to an apparatus in which an air flow is artificially generated, such as a cooling tower or an exhaust port of a vehicle tunnel. can do. In that case, it is possible to recover the energy of the artificially generated airflow by disposing a lift-type windmill at the opening portion in the air blowing direction of the artificially generated airflow as in the first, second, and third embodiments. It is.

  As a method and apparatus for recovering energy with high efficiency from the exhaust discharged from the artificial wind generator without reducing the coefficient of performance of the artificial wind generator without limiting the drive source of the artificial wind generator Can be used.

2 Axial flow fan 4 Darius type windmill 6 Rotating shaft 8 Darius blade 14 Generator 20 Machine casing 22 Air heat exchanger casing 30 Heat pump 32 Compressor 34 Four-way valve 36 Water heat exchanger 38 Expansion valve 40 Air heat exchanger 62 EVACON 66 Coil zone 66a Refrigerant gas inlet 66b Refrigerant liquid outlet 68 Sprinkling nozzle 72 Fan 72a, 72b, 72c Fan motor 76 Eliminator 78 Cross flow type windmill 78a Rotating shaft 78b Curved plate blade 79 Blower guide plate
l Extension line of air outlet of ₁ axial flow fan l ₂ Inclined line

Claims (4)

Generated by an artificial wind generator that includes an artificial wind generator that generates an air flow, a windmill that has rotating blades attached to a rotary shaft and obtains rotational force by the air flow, and a recovery means that recovers energy from the rotation of the rotary shaft In the device that recovers energy from the artificial wind
The windmill is a lift type windmill that obtains rotational force by lift,
An apparatus for recovering energy from the artificial wind generated by the artificial wind generator, wherein an open part that opens the air flow side of the air flow from the artificial wind generator is provided, and the lift type windmill is arranged in the open part .   An area of a rotation locus drawn by the rotor blades in a plane perpendicular to the air flow direction of the air flow of the artificial wind generating device including the rotating shaft is wider than a cross-sectional area of the air flow opening of the air flow of the artificial wind generating device. An apparatus for recovering energy from artificial wind generated by the artificial wind generating apparatus according to claim 1.   An angle formed by an inclined line connecting the outermost end of the air outlet and the outermost end of the rotation locus and an extension line extending from the outer end of the air outlet in the air blowing direction is within a projection range within 10 °. The apparatus for recovering energy from the artificial wind generated by the artificial wind generator according to claim 2, wherein the rotor blades are accommodated.   A method for recovering the energy of artificial wind exhaust generated by an artificial wind generator, wherein the rotary shaft and the rotary shaft are arranged perpendicularly or parallel to the air flow direction of the air flow by the air flow discharged from the artificial wind generator Generated by an artificial wind generator characterized in that it drives a lift-type wind turbine composed of a rotor blade attached to the rotor and recovers the energy of exhaust discharged from the artificial wind generator by driving the rotary shaft To recover the energy of the artificial wind.

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