JP2008164187A - Air conditioning device utilizing groundwater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning device performing dehumidifying-cooling and humidifying-heating by using groundwater. <P>SOLUTION: This air conditioning device comprises a first sealed container 1 and a second sealed container 2, a heat exchanger 10 for heating and cooling and a heat exchanger 17 for humidity conditioning to a heated/cooled part 9, and a steam compressor 5 disposed in a steam duct 4 between both sealed containers. The evaporative liquid in the first sealed container is circulated to be supplied to the heat exchanger for humidity conditioning and then returned to the first sealed container, and the groundwater is supplied to the second sealed container and the heat exchanger for heating and cooling, when the steam compressor is rotated forward in the direction to be compressed from the first sealed container toward the second sealed container, and the evaporative liquid in the first sealed container is circulated to be supplied to both of the heat exchanger for humidity conditioning and the heat exchanger for heating and cooling, and then returned to the first sealed container, and the groundwater is supplied to the second sealed container, when the steam compressor is rotated backward in the direction to be compressed from the second sealed container toward the first sealed container. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air conditioner that performs cooling and heating using groundwater.

  The specification in Patent Document 1 as a prior art and FIG. 2 describe an air conditioner that performs cooling and heating using groundwater.

This device
“The first and second sealed containers maintained at a reduced pressure, and the heat exchanger for air conditioning that indirectly exchanges heat between the air-conditioning location and the heat dissipation that indirectly exchanges heat with the groundwater. And a first circulation means for circulating an evaporating liquid such as water between the first sealed container and the heat exchanger for cooling and heating, and an evaporating liquid such as water as the second sealed. A second circulation means for circulating between the inside of the container and the heat exchanger for heat release and absorption, and further in a steam duct connecting the inside of the first sealed container and the inside of the second sealed container. It is equipped with a rotatable roots compressor. "
This is the configuration.

  When performing cooling in this apparatus, the Roots compressor is rotated in a direction in which the steam generated in the first sealed container is compressed toward the second sealed container.

  As a result, the degree of decompression is increased by the suction by the Roots compressor in the first sealed container, and the evaporating liquid in the first sealed container is cooled by boiling and evaporating in the decompressed state, and the cooling and heating are performed. The air-conditioning part is cooled by repeating the circulation of returning to the first sealed container after being sent to the heat exchanger.

  On the other hand, the steam compressed by the Roots type compressor enters the second sealed container, where the second sealed container and the heat-dissipating heat exchanger are routed through the second circulation means. The evaporating liquid cooled and condensed by the circulating evaporating liquid and the temperature of which is increased by the condensation of the vapor is sent from the second sealed container to the heat-absorbing heat exchanger and then again. By repeating the circulation of returning to the inside of the second sealed container, the heat exchanger for releasing heat is cooled by ground water.

  When heating is performed, the Roots compressor is reversely rotated in a direction in which steam generated in the second sealed container is compressed toward the first sealed container.

  As a result, this time, the pressure inside the second sealed container is increased by suction by reverse rotation of the Roots compressor, and the evaporating liquid in the second sealed container evaporates in a reduced pressure state. The generated steam is compressed by the Roots compressor and then enters the first sealed container, where the first sealed container and the heat exchanger for cooling and heating are routed through the first circulation means. The evaporating liquid which has been cooled and condensed by the circulating evaporating liquid and whose temperature has been increased by the condensation of the vapor is sent from the inside of the first sealed container to the heat exchanger for air conditioning, and then again the first evaporating liquid. By repeating the circulation of returning to the inside of one container, the air-conditioning part is heated.

On the other hand, the evaporating liquid whose temperature has been lowered by boiling evaporation in the second sealed container is sent from the second sealed container to the heat-absorbing heat exchanger and then returned to the second sealed container again. By repeating this circulation, heat is absorbed from groundwater in the heat exchanger for releasing heat.
That's it.
Japanese Patent Application Laid-Open No. 2006-97989

  However, although the air conditioner in the prior art described above can perform cooling and cooling with groundwater, the air conditioning unit cannot be dehumidified simultaneously with cooling and humidified simultaneously with heating. At the same time, when performing dehumidifying or humidifying humidity control, a device dedicated to humidity control must be installed separately from the air conditioning unit.

  It is a technical object of the present invention to provide an air conditioner that uses groundwater to simultaneously cool and dehumidify, and simultaneously perform heating and humidification.

In order to achieve this technical problem, claim 1 of the present invention provides:
“At least first and second sealed containers maintained at a reduced pressure, an indirect air conditioning / heating heat exchanger for an air conditioning location, an indirect humidity control heat exchanger for the air conditioning location, and the first airtightness A steam compressor provided in a steam duct connecting between the container and the second hermetic container and capable of rotating forward and backward,
When the vapor compressor is rotated forward in the direction of compression from the first sealed container toward the second sealed container, the evaporative liquid in the first sealed container is supplied to the humidity control heat exchanger. While circulating back to the first sealed container again, the groundwater pumped from the ground is supplied to the second sealed container and the heat exchanger for cooling and heating, and discharged from them.
When the vapor compressor is reversely rotated in the direction of compression from the second sealed container toward the first sealed container, the evaporating liquid in the first sealed container is used for the humidity control heat exchanger and the air conditioning After being supplied to both the heat exchanger and circulating again to return to the first sealed container, groundwater pumped from the ground is supplied to the second sealed container and discharged from there. "
It is characterized by that.

Further, claim 2 of the present invention is
“At least first and second sealed containers maintained at a reduced pressure, an indirect air conditioning / heating heat exchanger for an air conditioning location, an indirect humidity control heat exchanger for the air conditioning location, and the first airtightness A steam compressor provided in a steam duct connecting between the container and the second hermetic container and capable of rotating in the forward and reverse directions, and a heat exchanger for groundwater that performs indirect heat exchange between the two fluids,
The evaporative liquid in the second sealed container is circulated between the second sealed container and one side of the groundwater heat exchanger,
When the vapor compressor is rotated forward in the direction of compression from the first sealed container toward the second sealed container, the evaporative liquid in the first sealed container is supplied to the humidity control heat exchanger. While circulating back to the first closed vessel again, the groundwater pumped from the ground is supplied to the other side of the groundwater heat exchanger and the heat exchanger for cooling and heating, and discharged from these.
When the vapor compressor is reversely rotated in the direction of compression from the second sealed container toward the first sealed container, the evaporating liquid in the first sealed container is used for the humidity control heat exchanger and the air conditioning After being supplied to both the heat exchanger and circulating from there again, the groundwater pumped up from the ground is supplied to the other side of the groundwater heat exchanger and discharged from there. did. "
It is characterized by that.

Claim 3 of the present invention provides:
“In the claim 1 or 2, when the steam compressor is rotated forward, the groundwater pumped from the underground is first supplied to the other side of the second closed vessel or the groundwater heat exchanger, and then It was configured to discharge through a heat exchanger for air conditioning. ”
It is characterized by that.

Claim 4 of the present invention provides:
“In any one of claims 1 to 3, the cooling / heating heat exchanger includes a first heat exchanger that performs indirect heat exchange with the air inside the cooling / heating portion, and a mutual flow of two fluids. A second heat exchanger that performs indirect heat exchange between them, and a circulation path that circulates the heat transfer fluid between the first heat exchanger and one side of the second heat exchanger, When the steam compressor is rotated forward, groundwater pumped from the ground is supplied to the other side of the second heat exchanger, and when the steam compressor is rotated reversely, the evaporative liquid discharged from the first sealed container Is configured to be supplied to the other side of the second heat exchanger. "
It is characterized by that.

Claim 5 of the present invention provides:
“In the description of claim 4, the first heat exchanger includes a radiation panel disposed along a ceiling surface or a wall surface in the air-conditioning section, and a fluid passage provided in each radiation panel. The configuration is such that a heat transfer fluid circulating between one side of the second heat exchanger flows in the passage.
It is characterized by that.

Claim 6 of the present invention provides:
“In the description of any one of claims 1 to 5, when the two wells pumping up the groundwater are provided at an appropriate distance and the steam compressor is rotated forward, the second airtight container and the heat exchange for air conditioning The ground water supplied to the other side of the second heat exchanger is pumped from one of the two wells, while the second sealed vessel and the air conditioner heat exchanger or the second heat exchanger The groundwater discharged from the other side is returned to the ground from the other well, and when the steam compressor is reversely rotated, the groundwater supplied to the second sealed vessel is pumped from the other well. The groundwater discharged from the second airtight container is returned to the ground from the one well. "
It is characterized by that.

Claim 7 of the present invention provides:
“In any one of claims 1 to 6, the steam compressor is configured to be able to change the number of revolutions thereof.”
It is characterized by that.

  In the configuration described in claim 1, when the steam compressor is rotated forward, the low temperature groundwater pumped from the ground is supplied to the air conditioner heat exchanger, so that the air conditioner is cooled. Can do.

  The depressurization in the first sealed container is increased by the positive rotation of the vapor compressor, so that the evaporable liquid in the first sealed container is boiled and evaporated, and the evaporable liquid whose temperature is lowered by the boiling evaporation is It is sent to the heat exchanger for humidity control.

  On the other hand, the steam generated by boiling evaporation in the first sealed container is compressed by the steam compressor and then reaches the second sealed container, where the groundwater supplied into the second sealed container is supplied. Cools and condenses in direct contact with

  Due to boiling evaporation in the first closed container, the temperature of the evaporating liquid sent from the first closed container to the humidity control heat exchanger for the cooling / heating location is set to a compression ratio in the vapor compressor rather than the temperature of groundwater. The corresponding temperature can be significantly lowered, in other words, the surface temperature of the heat transfer surface in the humidity control heat exchanger can be made sufficiently lower than the temperature at the air conditioning location, and the heat transfer Since condensation of moisture in the air occurs on the surface of the surface, the air-conditioning part can be cooled while dehumidifying by removing the condensed water.

  Next, when the steam compressor is rotated in reverse, the pressure in the second sealed container is increased by this, so that the groundwater supplied into the second sealed container is boiled and evaporated. The vapor generated by evaporation is compressed by reverse rotation of the vapor compressor and then reaches the first sealed container, where it is cooled by direct contact with the evaporating liquid in the first sealed container. Condensed.

  Since the evaporating liquid whose temperature has risen due to the condensation of the vapor in the first sealed container is supplied to the air conditioner heat exchanger, the air conditioner can be heated.

  The evaporating liquid whose temperature has increased due to the condensation of the vapor in the first closed container is simultaneously sent to the humidity control heat exchanger, and the surface of the heat transfer surface in the humidity control heat exchanger Since the temperature is raised, the air-conditioning part can be heated while being humidified by evaporating water by watering the heat transfer surface.

  According to a second aspect of the present invention, when the steam compressor is rotated forward to have a cooling specification, the vapor that has reached the second sealed container is cooled by groundwater in the groundwater heat exchanger. Since it is cooled and condensed by direct contact with the ionic liquid, it can be cooled while dehumidifying the air-conditioning part as described above, and when the steam compressor is reversely rotated to be heated, Since the evaporative liquid in the two sealed containers receives heat from the groundwater in the groundwater heat exchanger, it can be heated while humidifying the air-conditioning part as described above.

  Therefore, according to the present invention, by using groundwater, it is possible to reliably cool the air-conditioning location while dehumidifying it and to heat it while humidifying it.

  In particular, according to the configuration described in claim 2, since the ground water can be cooled and heated in a state in which the ground water does not enter the second sealed container that is depressurized to an atmospheric pressure or lower, There is an advantage that it is possible to surely avoid the adverse effects of entering the sealed container, for example, the reduction of the degree of decompression due to the inert gas contained in a large amount in the groundwater, the occurrence of scale and corrosion due to the groundwater.

  In claim 1, “groundwater pumped from the ground is supplied to the second sealed container and the heat exchanger for air conditioning or heating, or the heat exchanger for groundwater and the heat exchanger for air conditioning”. In the case of separately supplying two sealed containers and the air conditioner heat exchanger or the groundwater heat exchanger and the air conditioner heat exchanger separately and simultaneously supplying the groundwater, the groundwater is first supplied to the second sealed container. 2. When supplying from the airtight container to the air conditioner heat exchanger or first to the groundwater heat exchanger and supplying from the groundwater heat exchanger to the air conditioner heat exchanger, the groundwater is first supplied to the air conditioner heat exchanger. To the second airtight container from the cooling / heating heat exchanger, first to the cooling / heating heat exchanger, and from the cooling / heating heat exchanger to the groundwater heat exchanger.

  By the way, as described above, when the cooling at the air conditioning location is performed by the groundwater pumped from the underground as described above, the temperature of the groundwater is, for example, 16 ° C., the appropriate temperature at the air conditioning location (for example, 25 ˜28 ° C.), the temperature difference between the heat transfer surface of the cooling / heating heat exchanger and the cooling / heating location is large. Is likely to occur.

  For this, as described in claim 3, groundwater pumped from the ground is first supplied to the other side of the second sealed container or the groundwater heat exchanger, and then the heat exchanger for cooling and heating is used. It is proposed to use a configuration that discharges through a container.

  Accordingly, the groundwater is sent to the heat exchanger for cooling and heating in a state where the temperature is increased due to the condensation of steam in the second sealed container, or the temperature is increased by heat exchange in the heat exchanger for groundwater. By being sent to the heating / cooling heat exchanger in a high state, the temperature difference between the heat transfer surface of the heating / cooling heat exchanger and the cooling / heating point causes condensation of steam in the second sealed container. Since it becomes small by the amount to be performed, it is possible to reliably reduce the occurrence of condensation on the heat transfer surface in the air conditioner heat exchanger.

  In addition, as described above, when the cooling at the air-conditioning / cooling location is performed using the groundwater pumped from the ground as described above, in addition to the high possibility that condensation occurs in the air-conditioning heat exchanger as described above, Corrosion and scale are likely to occur.

  For this, as described in claim 4, the air conditioner heat exchanger is connected to the first heat exchanger that performs indirect heat exchange with the air inside the air conditioner and two fluids. A second heat exchanger that performs indirect heat exchange with each other, and a circulation path that circulates the heat transfer fluid between the first heat exchanger and one side of the second heat exchanger. When the steam compressor is rotated forward, it is supplied to the ground water pumped from the ground or the other side of the second heat exchanger, while the steam compressor is rotated backward, the first sealed container is It is proposed that a part of the discharged evaporating liquid is supplied to the other side of the second heat exchanger.

  As a result, a heat transfer fluid other than groundwater can be used as the heat transfer fluid circulating between the first heat exchanger and the second heat exchanger constituting the air conditioner heat exchanger. The generation of scale can be reliably avoided, and the temperature at the heat transfer surface of the first heat exchanger is indirect heat exchange between the groundwater and the heat transfer liquid in the second heat exchanger when cooling is performed. As the temperature difference required for the heating is reduced by an amount corresponding to the temperature difference (for example, about 2 to 5 ° C.), the temperature difference with the air-conditioning part is reduced, so that condensation occurs on the heat transfer surface of the first heat exchanger. Can be reliably reduced.

  In particular, in the configuration described in claim 4, as in the case of claim 3, groundwater pumped from the ground is first supplied to the second sealed container, and the air conditioner for cooling and heating is supplied from the second sealed container. The heat exchanger is supplied to the second heat exchanger, or first supplied to the ground water heat exchanger, and the ground water heat exchanger is changed to the second heat exchanger in the air conditioner heat exchanger. By being configured to discharge from the second heat exchanger, the second heat exchanger is supplied with groundwater heated by condensation of steam in the second sealed vessel, so that the first heat exchanger In a state where the temperature at the heat transfer surface does not exceed the temperature at the air conditioning / heating location, the temperature at the air conditioning / heating location can be made closer, and there is an advantage that it can be reduced more reliably than the occurrence of condensation.

  The humidity control heat exchanger and the first heat exchanger are installed inside the air conditioning unit, installed in an air circulation path in the air conditioning unit, or new air is supplied to the air conditioning unit. It can be configured to be installed in the introduction route.

  Further, in the configuration described in claim 4, as described in claim 5, the first heat exchanger is provided with a radiant panel disposed along a ceiling surface or a wall surface in the air conditioning location, It can be constituted by a fluid passage provided in each radiation panel, and a heat medium liquid circulating between the second heat exchanger can be flowed in the fluid passage.

  With this configuration, the area of the heat transfer surface for performing indirect heat exchange with the air-conditioning location can be greatly increased, so that the performance of cooling and heating can be controlled in a state where the occurrence of corrosion, scale and condensation is suppressed. And there is an advantage that can be greatly improved.

  Further, the configuration described in claim 6 has the following effects.

  That is, during cooling with the steam compressor rotating forward, groundwater whose temperature has increased by condensing the compressed steam in the second sealed container is returned from the second well to the ground, and the second The stored high temperature groundwater is pumped up from the second well and supplied to the second sealed container during heating with the steam compressor rotating in reverse, for heating. It can be a heat source when performing.

  On the other hand, during heating with the steam compressor rotating in the reverse direction, the ground water whose temperature has been lowered by boiling evaporation in the second closed vessel is returned from the first well to the ground, The stored low-temperature groundwater is pumped up from the first well and cooled in the forward rotation of the steam compressor, and stored in the vicinity. Since it can be supplied to the other side of the heat exchanger and used as a cooling source for cooling, the efficiency of cooling and heating can be greatly improved.

  Further, as described in claim 7, the load during cooling and heating can be adjusted to increase or decrease arbitrarily by changing the number of revolutions in the steam compressor.

  A first embodiment of the present invention will be described below with reference to FIGS.

  In this figure, reference numeral 1 denotes a first sealed container, and reference numeral 2 denotes a second sealed container. Either one or both of these sealed containers 1 and 2 includes the both sealed containers 1 and 2. A vacuum generator such as a vacuum pump 3 is connected to maintain the inside at a reduced pressure lower than the atmospheric pressure.

  The upper part of the first sealed container 1 and the upper part of the second sealed container 2 are connected to each other via a steam duct 4, and a steam compressor capable of rotating in the forward and reverse directions is disposed in the middle of the steam duct 4. The Roots type compressor 5 which is one example is provided.

  This Roots type compressor 5 is rotationally driven by an electric motor 5a, an internal combustion engine or the like, and includes a speed change mechanism 5b for changing the number of rotations.

  The first airtight container 1 and the second airtight container 2 are connected to each other through a communication passage 6 at the bottom so that water in each of the airtight containers 1 and 2 can pass between them. , 2 are provided with water spray nozzles 7, 8 respectively.

  Reference numeral 9 denotes a place for cooling and heating such as indoors, that is, an air-conditioning place, and reference numeral 10 denotes an indirect heat exchange type air-conditioning heat exchanger for the air-conditioning place 9.

  The air conditioner heat exchanger 10 is installed in the air conditioner 9 or the like so as to indirectly exchange heat with the air in the air conditioner 9, and the first heat exchanger 11, A second heat exchanger 12 installed at an appropriate location such as outside the air-conditioning location 9 to indirectly exchange heat between the two fluids, and a heat transfer fluid such as water are used as the first heat The circulation path 13, 14 is configured to circulate between the exchanger 11 and one side 12 a of the second heat exchanger 12, and the circulation pump 15 provided in one of the circulation paths 13, 14. ing.

  In the case of the present embodiment, the at least one first heat exchanger 11 is configured by connecting two heat exchangers 11a and 11b in series.

  The first heat exchanger 11 is installed inside the air conditioning station 9 or installed in an air circulation path in the air conditioning station 9 or a duct for introducing new air into the air conditioning station 9 (see FIG. (Not shown).

  On the other hand, a new air introduction duct 16 is connected to the cooling / heating location 9, and a heat exchanger 17 for humidity control in which heat is indirectly exchanged with the new air in the introduction duct 16. And a water spray nozzle 18 for the heat transfer surface of the humidity control heat exchanger 17 is provided.

  On the other hand, two wells 20 and 21 are excavated on the ground 19 at an appropriate distance L. The ground water pumped from one of the wells 20 and 21 by the pump 22 and the other The ground water pumped up from the well 21 by the pump 23 is supplied to the water spray nozzle 8 in the second sealed container 2 through the pipes 26 and 27 having the on-off valves 24 and 25, respectively. It is configured to erupt inside.

  The ground water in the second sealed container 2 is pumped out by a pump 28 and returned to the ground from the one well 20 through a pipe line 30 having an on-off valve 29, and an on-off valve 31 is provided. Further, the second heat exchanger 12 is configured to be supplied to the other side 12b via the pipe line 32.

  Evaporating liquid such as water in the first sealed container 1 is pumped out by a pump 33 and supplied to the other side 12b of the second heat exchanger 12 through a pipe line 35 provided with an on-off valve 34. The humidity control heat exchanger 17 is supplied through a pipe line 37 having an on-off valve 36.

  Further, the evaporative liquid discharged from the humidity control heat exchanger 17 is supplied to the water spray nozzle 7 in the first sealed container 1 through the pipe line 38 so as to be ejected into the first sealed container 1. In addition, the groundwater discharged from the other side 12b of the second heat exchanger 12 is returned to the ground from the other well 21 through the pipe line 40 provided with the on-off valve 39. The water spray nozzle 7 in the first airtight container 1 is supplied through a pipe line 42 having an opening / closing valve 41.

  In this configuration, the cooling operation is performed as shown in FIG.

  That is, while the Roots-type compressor 5 is normally rotated in the direction of compression from the first sealed container 1 toward the second sealed container 2, the on-off valves 24, 31, 36 and 36 of the various on-off valves 39 is opened, the on-off valves 25, 29, 34 and 41 are closed, and among the various pumps, the pumps 15, 22, 28 and 33 are operated, and the pump 23 is stopped.

  By this operation, the groundwater pumped from the ground by the pump 22 from one well 20 is sent to the water spray nozzle 8 in the second sealed container 2 through the pipe 26 and ejected, and this second sealed It is sent from the inside of the container 2 to the other side 12b of the second heat exchanger 12 constituting the cooling / heating heat exchanger 10 via the pump 28 and the pipe line 32, and discharged from the other side 12b of the second heat exchanger 12. Then, it is sent to the other well 21 through the conduit 40 and returned from the other well 21 to the ground.

  On the other hand, an evaporating liquid such as water in the first sealed container 1 is supplied to the humidity control heat exchanger 17 via a pump 33 and a pipe line 37, and the humidity control heat exchanger 17 supplies the first liquid. The circulation of being sent to the water spray nozzle 7 in the closed container 1 through the pipe line 38 and ejected is repeated.

  In addition, the heat medium liquid in the heat exchanger 10 for cooling and heating is supplied to the first heat exchanger 11 and the second heat exchanger constituting the heat exchanger 10 for cooling and heating by the pipes 13 and 14 and the circulation pump 15. It circulates between 12 one side 12a.

  In this state, when the Roots-type compressor 5 rotates in the forward direction, the reduced pressure in the first sealed container 1 is increased, and evaporating liquid such as water in the first sealed container 1 is boiled and evaporated. The evaporating liquid whose temperature has been lowered by the boiling evaporation is sent to the heat exchanger 17 for humidity control.

  On the other hand, the vapor generated by boiling evaporation in the first sealed container 1 is compressed by the roots compressor 5 and then reaches the second sealed container 2, where the inside of the second sealed container 2 It is cooled and condensed in direct contact with the groundwater supplied to it.

  The groundwater in which the steam is condensed in the second sealed container 2 is sent to the other side 12b of the second heat exchanger 12 constituting the air conditioner heat exchanger 10, and one side 12a of the second heat exchanger 12 is supplied. Since the heat transfer fluid is circulated between the first heat exchanger 11 and the first heat exchanger 11 to cool the heat transfer fluid, the cooling / heating portion 9 can be cooled.

  The temperature of the evaporating liquid sent from the first sealed container 1 to the heat exchanger 17 for humidity control with respect to the cooling / heating location 9 by boiling evaporation in the first sealed container 1 is more than the root-type compression than the temperature of groundwater. The temperature corresponding to the compression ratio in the machine 5 can be lowered, in other words, the surface temperature of the heat transfer surface in the humidity-control heat exchanger 17 can be made sufficiently lower than the temperature in the air conditioning location 9. In addition, since moisture condensation in the air occurs on the surface of the heat transfer surface, the air conditioning location 9 can be cooled while dehumidifying by removing the condensation.

  Further, the groundwater in the second sealed container 2 is sent to the other side 12b of the second heat exchanger 12 after its temperature rises by the condensation of steam so as to approach the temperature of the cooling / heating location 9. Here, heat is exchanged with the heat transfer fluid circulating between the one side 12 a of the second heat exchanger 12 and the first heat exchanger 11.

  By this heat exchange, the temperature of the heat transfer liquid can be brought close to the temperature of the cooling / heating location 9 without exceeding the temperature of the cooling / heating location 9, so that the first heat exchanger 11 And the temperature difference between the cooling / heating location 9 can be reduced, and the occurrence of condensation on the heat transfer surface of the first heat exchanger 11 on the cooling / heating location 9 side can be avoided.

  Next, when setting the heating specification, the operation is performed as shown in FIG.

  That is, the Roots-type compressor 5 rotates in the reverse direction in the direction of compression from the second sealed container 2 toward the first sealed container 1, while the on-off valves 25, 29, 34, 36 and 41 are opened, the on-off valves 24, 31 and 39 are closed, and among the various pumps, the pumps 15, 23, 28 and 33 are operated, and the pump 22 is stopped.

  By this operation, the groundwater pumped from the ground by the pump 23 from the other well 21 is sent to the water spray nozzle 8 in the second hermetic container 2 via the pipe 26 and ejected, and this second hermetic seal is made. It is sent from the inside of the container 2 to one well 20 through a pump 28 and a pipe 30 and returned from the one well 20 to the ground.

  On the other hand, evaporative liquid such as water in the first sealed container 1 is pumped out by a pump 33 and supplied to the humidity-control heat exchanger 17 through a pipe 37, To the other side 12b of the second heat exchanger 12, and the first side 12b of the humidity control heat exchanger 17 and the second heat exchanger 12 through the line 38 and the line 42 from the first side. The circulation of being sent to the water spray nozzle 7 in the sealed container 1 and being ejected is repeated.

  In this case, the supply ratio of the evaporating liquid pumped from the first sealed container 1 by the pump 33 to the humidity control heat exchanger 17 and the second heat exchanger 12 is determined by the opening and closing of the on-off valves 34 and 36. Can be set arbitrarily by adjusting the degree.

  In addition, the heat medium liquid in the heat exchanger 10 for cooling and heating is supplied to the first heat exchanger 11 and the second heat exchanger constituting the heat exchanger 10 for cooling and heating by the pipes 13 and 14 and the circulation pump 15. It circulates between 12 one side 12a.

  In this state, when the Roots-type compressor 5 rotates in the reverse direction, the pressure in the second sealed container 2 is increased, so that the groundwater in the second sealed container 2 is boiled and evaporated. The groundwater whose temperature has been reduced by evaporation is returned from one well 20 to the ground.

  On the other hand, the vapor generated by boiling evaporation in the second sealed container 2 is compressed by the roots compressor 5 and then reaches the first sealed container 1, where the inside of the first sealed container 1 Is cooled and condensed by direct contact with evaporating liquid such as water.

  The evaporating liquid whose temperature is increased by condensing the vapor in the first sealed container 1 is the other side 12b of the second heat exchanger 12 constituting the heat exchanger 10 for cooling and heating, and the humidity adjusting liquid. It is sent to both the heat exchanger 17.

  The evaporating liquid sent from the first sealed container 1 to the other side 12 b of the second heat exchanger 12 circulates between the one side 12 a of the second heat exchanger 12 and the first heat exchanger 11. Since this heat transfer fluid is heated by exchanging heat with the heat transfer fluid, the cooling / heating portion 9 can be heated.

  In addition, the evaporating liquid sent from the first sealed container 1 to the humidity control heat exchanger 17 raises the temperature of the heat transfer surface in the humidity control heat exchanger 17. By spraying water with the water spray nozzle 18 and evaporating the water, the air-conditioning part can be heated while humidifying.

  In the above embodiment, the groundwater whose temperature is lowered by boiling evaporation in the second sealed container 2 when the heating specification is used is returned and stored in the vicinity of one well 20 in the ground. Then, when the cooling specification is adopted, groundwater having a low temperature stored in the vicinity of the one well 20 is pumped up and used as a cooling source for cooling.

  On the other hand, in the vicinity of the other well 21 in the ground, the groundwater whose temperature has become high due to the condensation of the steam in the second closed vessel 2 when stored in the cooling is returned and stored, and then heated. Sometimes, groundwater with a high temperature stored in the vicinity of the other well 21 is pumped up to serve as a heat source for heating.

  Therefore, it is preferable that the distance L between the two wells 20 and 21 is set so that the groundwater in each well does not mix with each other.

  Furthermore, in the embodiment, in the case of the cooling specification, if the rotational speed when the Roots compressor 5 is normally rotated is accelerated, the degree of decompression in the first hermetic container 1 is increased and the liquid is boiled and evaporated. Since the temperature of the evaporating liquid is lowered, the cooling load at the cooling / heating point 9 can be increased. On the other hand, in the case of the heating specification, if the rotation speed when the Roots compressor 5 is reversely rotated is accelerated, the first sealing Since the degree of decompression in the container 1 decreases and the temperature of the evaporative liquid increases, the cooling load and the heating load at the cooling / heating location 9 can be increased so that the heating load at the cooling / heating location 9 can be increased. The compressor 5 can be arbitrarily adjusted by controlling to increase or decrease the number of rotations when the compressor 5 is rotated forward or backward.

  In addition, in the said embodiment, the heat exchanger 10 for the air conditioning with respect to the said air-conditioning location 9 is comprised by the 1st heat exchanger 11, the 2nd heat exchanger 12, and the circulation path of the heat-medium liquid in the meantime. As a result, heat medium liquid other than ground water can be used as the heat medium liquid circulating between the first heat exchanger 11 and the second heat exchanger 12, so that corrosion and scale generation due to ground water can be ensured. In addition, when cooling is performed, the temperature at the heat transfer surface of the first heat exchanger 11 is such that the second heat exchanger 12 performs indirect heat exchange between the groundwater and the heat transfer liquid. Since the temperature difference is reduced by the necessary temperature difference, the temperature difference between the air-conditioning location and the temperature can be reduced.

  In addition, in the embodiment, in the cooling specification, the groundwater pumped from one well 20 is first supplied to the second sealed container 2, and the second heat exchanger 2 then supplies the second heat exchanger. Since the second side 12b of the second heat exchanger 12 is supplied with ground water heated by condensation of steam in the second side 12b of the second heat exchanger 12, The temperature at the heat transfer surface of the first heat exchanger 11 can be made closer to the temperature at the cooling / heating location 9 in a state where the temperature does not exceed the temperature at the cooling / heating location 9.

  The embodiment has been described in the case where a roots compressor is used as a steam compressor capable of rotating in the forward and reverse directions and capable of changing the number of revolutions. However, the present invention is not limited to this, and the movable blade compression is not limited thereto. It goes without saying that a rotary compressor such as a machine or a screw compressor can be used.

  And FIG. 4 shows one specific example in the 1st heat exchanger which comprises the heat exchanger 10 for an air conditioning with respect to the said air conditioning location 9. FIG.

  The first heat exchanger 11 ′ of this specific example is provided on each of the plurality of radiation panels 11 a ′ arranged side by side along the ceiling or wall surface that constitutes the air conditioning section 9, and each of these radiation panels 11 a ′. A heat transfer fluid circulating between the second heat exchanger 12 is caused to flow through the conduits 13 and 14 in the fluid passages 11b ″ of the radiation panels 11a ′. Thus, the cooling / heating location 9 is configured to be cooled or heated.

  The radiant panel 11a 'and the pipe-like fluid passage 11b' provided therein are preferably made of a material that is lightweight and excellent in heat transfer, such as aluminum.

  According to this configuration, the entire radiation panel 11a 'is cooled or warmed by the heat transfer fluid flowing in the pipe-like fluid passage 11b' provided therein, so that the heat transfer surface with respect to the cooling / heating location 9 is improved. There is an advantage that the area can be greatly increased.

  When the first heat exchanger 11 ′ having the structure shown in FIG. 4 is replaced with two first heat exchangers 11a and 11b connected in series as shown in FIG. A plurality of radiant panels 11a 'with fluid passages 11b' in one of the first heat exchangers located on the upstream side are arranged so as to extend vertically along the wall surface constituting the air conditioning location 9, A plurality of the radiant panels 11a ′ with the fluid passages 11b ′ in the other first heat exchanger located on the downstream side with respect to the flow of the heat transfer liquid so as to extend along the ceiling surface constituting the cooling / heating location 9 It can be configured to be disposed.

  With this configuration, condensation tends to occur on the surface of the radiant panel 11a 'in the first heat exchanger disposed on the wall surface. This dew condensation is caused by the radiant panel 11a' being oriented vertically. Therefore, it can be made to flow down easily along this.

  FIG. 5 shows a second embodiment.

  This second embodiment is an alternative to the configuration in which ground water pumped from the underground is supplied into the second sealed container 2.

  In other words, a groundwater heat exchanger 43 that is configured to indirectly perform heat exchange between two fluids is separately provided, and an evaporating liquid such as water contained in the second sealed container 2 is supplied to the second fluid container. A ground pump 2 is configured to circulate between the sealed container 2 and one side 43a of the ground water heat exchanger 43 by a circulation pump 44, while ground water pumped from both wells 20 and 21 is used as the ground water heat exchanger. 43 is configured to be supplied to the other side 43b and discharged from the other side 43b, and the other configuration is the same as that of the first embodiment.

  According to this configuration, when the steam compressor such as the Roots compressor 5 is rotated forward to have a cooling specification, the steam that has reached the second sealed container 2 is cooled by groundwater in the groundwater heat exchanger 43. Since it cools and condenses in direct contact with the evaporating liquid, it is possible to cool the air-conditioning section 9 while dehumidifying the same as described above, and reversely rotate the steam compressor such as the Roots compressor 5 When the heating specification is used, the evaporating liquid in the second airtight container 2 receives heat from the groundwater in the groundwater heat exchanger 43, so that the air-conditioning part is heated while being humidified in the same manner as described above. be able to.

  Needless to say, the various modifications described in the first embodiment can also be applied to the second embodiment.

It is a figure which shows 1st Embodiment in this invention. It is a figure which shows the case where it is set as the cooling specification. It is a figure which shows the case where it is set as heating specification. It is a perspective view which shows the specific example of the 1st heat exchanger which comprises the heat exchanger for an air conditioning. It is a figure which shows 2nd Embodiment in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st airtight container 2 2nd airtight container 3 Vacuum pump 4 Steam duct 5 Roots type compressor (steam compressor)
6 communication path 9 air-conditioning location 10 air-conditioning heat exchanger 11 first heat exchanger composing air-conditioning heat exchanger 12 second heat exchanger composing air-conditioning heat exchanger 12a one side of second heat exchanger 12b The other side of the second heat exchanger 13, 14 Circulation line 15 Circulating pump 17 Heat exchanger for humidity control 18 Water spray nozzle 20 One well 21 The other well 43 Ground water heat exchanger 43a One of the ground water heat exchangers Side 43b The other side of the heat exchanger for groundwater

Claims (7)

At least a first sealed container and a second sealed container maintained at a reduced pressure, an indirect air conditioning heat exchanger for an air conditioning location, an indirect humidity control heat exchanger for the air conditioning location, and the first airtight container And a steam compressor provided in a steam duct connecting between the second sealed containers and capable of rotating in the forward and reverse directions.
When the vapor compressor is rotated forward in the direction of compression from the first sealed container toward the second sealed container, the evaporative liquid in the first sealed container is supplied to the humidity control heat exchanger. While circulating back to the first sealed container again, the groundwater pumped from the ground is supplied to the second sealed container and the heat exchanger for cooling and heating, and discharged from them.
When the vapor compressor is reversely rotated in the direction of compression from the second sealed container toward the first sealed container, the evaporating liquid in the first sealed container is used for the humidity control heat exchanger and the air conditioning After being supplied to both the heat exchanger and circulating from there again, the ground water pumped from the ground is supplied to the second sealed container and discharged from there. Air conditioner using groundwater. At least a first sealed container and a second sealed container maintained at a reduced pressure, an indirect air conditioning heat exchanger for an air conditioning location, an indirect humidity control heat exchanger for the air conditioning location, and the first airtight container And a steam compressor capable of rotating in the forward and reverse directions provided in a steam duct connecting between the second sealed containers, and a heat exchanger for groundwater that performs indirect heat exchange between the two fluids,
The evaporative liquid in the second sealed container is circulated between the second sealed container and one side of the groundwater heat exchanger,
When the vapor compressor is rotated forward in the direction of compression from the first sealed container toward the second sealed container, the evaporative liquid in the first sealed container is supplied to the humidity control heat exchanger. While circulating back to the first closed vessel again, the groundwater pumped from the ground is supplied to the other side of the groundwater heat exchanger and the heat exchanger for cooling and heating, and discharged from these.
When the vapor compressor is reversely rotated in the direction of compression from the second sealed container toward the first sealed container, the evaporating liquid in the first sealed container is used for the humidity control heat exchanger and the air conditioning After being supplied to both the heat exchanger and circulating from there again, the groundwater pumped up from the ground is supplied to the other side of the groundwater heat exchanger and discharged from there. An air conditioner that uses groundwater.   The ground water pumped up from the underground is first supplied to the other side of the second airtight container or the ground water heat exchanger when the steam compressor is rotated in the forward direction. An air conditioner using groundwater, characterized in that it is configured to be discharged through a heat exchanger.   The heat exchanger for air conditioning according to any one of claims 1 to 3, wherein the heat exchanger for air conditioning is between a first heat exchanger that performs indirect heat exchange with air inside the air conditioning location, and two fluids. A second heat exchanger that performs indirect heat exchange at the first and second heat exchangers and a circulation path that circulates the heat transfer fluid between the first heat exchanger and one side of the second heat exchanger. When the compressor is rotated forward, groundwater pumped from the ground is supplied to the other side of the second heat exchanger, and when the vapor compressor is rotated backward, the evaporative liquid discharged from the first sealed container is An air conditioner using groundwater, characterized in that a part is supplied to the other side of the second heat exchanger.   5. The fluid passage according to claim 4, wherein the first heat exchanger includes a radiation panel disposed along a ceiling surface or a wall surface in the air-conditioning location, and a fluid passage provided in each radiation panel. An air conditioner using groundwater, characterized in that a heat transfer fluid circulating between one side of the second heat exchanger flows inside.   6. The second airtight container and the air conditioner heat exchanger according to any one of claims 1 to 5, wherein two wells for pumping groundwater are provided at an appropriate distance and when the steam compressor rotates forward. Alternatively, the groundwater supplied to the other side of the second heat exchanger is pumped from one of the two wells, while the second sealed vessel and the heat exchanger for cooling / heating or the other of the second heat exchanger The groundwater discharged from the side is configured to return to the ground from the other well, and when the steam compressor is reversely rotated, the groundwater supplied to the second sealed vessel is pumped from the other well, An air conditioner using groundwater, characterized in that groundwater discharged from the second airtight container is returned to the ground from the one well.   The air conditioner using groundwater according to any one of claims 1 to 6, wherein the steam compressor has a configuration capable of changing a rotation speed thereof.

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