JP5375283B2 - Refrigeration equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To drastically improve the performance of a vapor compression type refrigerating machine by the effective use of waste heat of the vapor compression type refrigerating machine and cold heat conversion by an absorption type refrigerating machine. <P>SOLUTION: This refrigerating device formed of a combination of the vapor compression type refrigerating machine and the absorption type refrigerating machine adopts a refrigerant cooling system cooling or supercooling the refrigerant of the vapor compression type refrigerating machine X during cooling operation by the evaporator E of the absorption type refrigerating machine Y. In order to use an amount of heat, that occurs when the heat of the refrigerant of the vapor compression type refrigerating machine X during cooling operation is radiated, as the heating source of the absorption type refrigerating machine Y, the refrigerant after compression in the vapor compression type refrigerating machine X is caused to flow in the heater g of the generator G of the absorption type refrigerating machine Y, and the refrigerant of the vapor compression type refrigerating machine X after heat exchange with an absorbent solution in the generator G of the absorption type refrigerating machine Y is caused to flow in the heat exchanger e of the evaporator E of the absorption type refrigerating machine Y. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a refrigeration apparatus, and more particularly to a refrigeration apparatus that combines a vapor compression refrigeration cycle and an absorption refrigeration cycle.

  One way to improve the performance of a vapor compression refrigerator is to combine an absorption refrigerator, but the absorption refrigerator is driven by a gas engine or other exhaust heat and the resulting cold is used as a vapor compression refrigerator. Various methods have already been proposed to increase the performance of a vapor compression refrigerator by taking it into the machine (see, for example, Patent Documents 1 and 2).

JP 2004-28374 A JP 2006-17350 A

  However, driving the absorption chiller using the exhaust heat of the vapor compression refrigeration machine drives the absorption chiller because the exhaust heat amount of the vapor compression refrigeration machine is small and the exhaust heat temperature is low. Even if it can be driven, there are very few effects, so there are significant problems in terms of cost and there has been almost no study.

  However, when the energy cost rises and the development of air conditioners that use natural refrigerants, it is necessary to improve the performance of the vapor compression refrigeration machine. There is a growing demand for more effective use after conversion.

  The present invention has been made in view of the above points, and effectively uses the exhaust heat of the vapor compression refrigerator and significantly improves the performance of the vapor compression refrigerator by cooling with an absorption refrigerator. The purpose is to do.

In the present invention, as a first means for solving the above-described problem, in the refrigeration apparatus in which the vapor compression refrigerator X and the absorption refrigerator Y are combined, the refrigerant of the vapor compression refrigerator X during the cooling operation is used. The refrigerant cooling method is employed in which the refrigerant is cooled or supercooled by the evaporator E of the absorption refrigeration machine Y, and the amount of heat when the refrigerant of the vapor compression refrigeration machine X is radiated during cooling operation is determined by the absorption refrigeration machine. In order to use as a heating source for Y, the refrigerant compressed in the vapor compression refrigerator X is caused to flow into the heater g of the generator G of the absorption refrigerator Y. When the refrigerant temperature of the compressor 1 in X is low, a bypass circuit 13 is provided in which the refrigerant of the vapor compression refrigerator X bypasses the generator G of the absorption refrigerator Y, and the on-off valve is provided in the bypass circuit 13 14 is attached The on-off valve 14 is closed when the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G in the absorption refrigerator Y, and In the generator G of the absorption refrigerator Y, the absorption solution and the refrigerant of the vapor compression refrigerator X exchange heat, and the refrigerant of the vapor compression refrigerator X after the heat exchange is the vapor compression refrigerator. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the refrigerant temperature of the generator G of the absorption chiller Y, the on-off valve 14 of the bypass circuit 13 is opened. The refrigerant of the compression refrigeration machine X is caused to flow into the heat source side heat exchanger 3 in the vapor compression refrigeration machine X by the bypass circuit 13, and the vapor compression refrigeration machine X is cooled during heating operation. When driving Is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the reverse direction, and is configured to function the heat source side heat exchanger 3 during heating operation, while opening and closing the bypass circuit 13 The valve 14 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigeration machine X becomes too low, and the refrigerant of the vapor compression refrigeration machine X is heated by a heater in the generator G. g, the solution pump Pl of the absorption refrigeration machine Y, the air-cooled heat exchanger 8 and the cooling fan 10 provided in the air-cooled heat exchanger 8 are operated so that the solution in the generator G It absorbs heat, and the solution is configured to absorb heat from the outside air in the air-cooled heat exchanger 8, and from the outlet of the absorber A and the diluted solution sent to the generator G via the solution pump Pl and the generator G For heat exchange with a concentrated solution of A heat exchanger Ha is attached, an on-off valve 17 is provided in the middle of the pipe 16 leading to the solution heat exchanger Ha, and the absorber A is connected to the absorber A from the outlet of the air-cooled heat exchanger 8 that supercools the absorbed solution. The solution pipe 18 and the dilute solution pipe 19 extending from the solution heat exchanger Ha to the generator G are connected by a solution pipe 21 with an open / close valve 20, and the solution heat exchanger Ha is reached during cooling operation. The on-off valve 17 of the bypass circuit 13 that opens the on-off valve 17 of the pipe 16 and closes the on-off valve 20 of the solution pipe 21 and bypasses the heater g of the generator G is used as the inlet refrigerant of the bypass circuit 13. When the temperature exceeds the solution temperature of the generator G, the operation is closed. During heating operation, the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is closed and the on-off valve 20 of the solution pipe 21 is opened. Operated and before The on-off valve 14 of the bypass circuit 13 that bypasses the heater g of the generator G is configured to be closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigerator X becomes too low. ing.

  With the above-described configuration, the heat source side heat exchanger 3 can be used since the amount of heat generated when the refrigerant of the vapor compression refrigerator X is radiated can be used as a heating source of the absorption refrigerator Y during the cooling operation. Can be reduced. Even if the refrigerant of the vapor compression refrigeration machine X directly flows into the heat source side heat exchanger 3 by bypassing the generator G, the heat source side heat exchanger 3 is changed because the refrigerant temperature of the vapor compression refrigeration machine X is low. Even if it is made smaller, there is no problem and the cost can be reduced.

  Moreover, in this invention, when it is comprised as mentioned above, and the refrigerant | coolant temperature of the compressor 1 in the vapor | steam compression refrigeration machine X is low at the time of the partial load at the time of air_conditionaing | cooling operation, the refrigerant | coolant of the said vapor | steam compression refrigeration machine X Opens the on-off valve 14 of the bypass circuit 13 that bypasses the generator G in the absorption refrigeration machine Y, whereby the refrigerant of the vapor compression refrigeration machine X bypasses the generator G of the absorption refrigeration machine Y; Therefore, the refrigerant of the vapor compression refrigerator X having a low temperature does not flow into the generator G to lower the solution temperature of the generator G. Therefore, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y.

Further, according to the present invention, by configuring as described above, when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, the on-off valve 14 of the bypass circuit 13 is closed and the absorption refrigeration is performed. By operating the solution pump Pl of the machine Y, the air-cooling heat exchanger 8 and the cooling fan 10 attached to the air-cooling heat exchanger 8, the refrigerant of the vapor compression refrigerator X is the solution of the absorption refrigerator Y The absorption chiller Y absorbs more heat, and the air-cooled heat exchanger 8 absorbs heat from the outside air. In the refrigeration system that combines the vapor compression refrigeration machine X and the absorption refrigeration machine Y, the heating operation is smoothly performed. It can be carried out.

And in this invention, by having comprised as mentioned above, by operating the solution pump Pl of the said absorption-type refrigerator Y, the said air-cooling heat exchanger 8, and the cooling fan 10, in vapor compression-type refrigerator X The refrigerant absorbs heat from the solution in the generator G of the absorption refrigeration machine Y, and the solution in the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air conditioning operation (in other words, heat pump operation) is performed. Is possible.

In the present invention, as the second means for solving the above Symbol object, a refrigeration apparatus combining an absorption chiller Y and vapor compression refrigerating machine X, the vapor compression type refrigerator X during cooling operation A refrigerant cooling system is employed in which the refrigerant is cooled or supercooled by the evaporator E of the absorption refrigeration machine Y, and the amount of heat generated when the refrigerant of the vapor compression refrigeration machine X is radiated during cooling operation is determined by the absorption refrigeration. In order to use as a heating source of the machine Y, the refrigerant compressed in the vapor compression refrigeration machine X flows into the heater g of the generator G of the absorption refrigeration machine Y. When the refrigerant temperature of the compressor 1 in the machine X is low, a bypass circuit 13 is provided in which the refrigerant of the vapor compression refrigeration machine X bypasses the generator G of the absorption refrigeration machine Y, and the bypass circuit 13 is opened and closed. Attach valve 14 The on-off valve 14 is closed when the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G in the absorption refrigerator Y, and In the generator G of the absorption refrigerator Y, the absorption solution and the refrigerant of the vapor compression refrigerator X exchange heat, and the refrigerant of the vapor compression refrigerator X after the heat exchange is the vapor compression refrigerator. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the refrigerant temperature of the generator G of the absorption chiller Y, the on-off valve 14 of the bypass circuit 13 is opened. The refrigerant of the compression refrigeration machine X is caused to flow into the heat source side heat exchanger 3 in the vapor compression refrigeration machine X by the bypass circuit 13, and the vapor compression refrigeration machine X is cooled during heating operation. When driving Is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the reverse direction, and is configured to function the heat source side heat exchanger 3 during heating operation, while opening and closing the bypass circuit 13 The valve 14 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigeration machine X becomes too low, and the refrigerant of the vapor compression refrigeration machine X is heated by a heater in the generator G. g, the solution pump Pl of the absorption refrigeration machine Y, the air-cooled heat exchanger 8 and the cooling fan 10 provided in the air-cooled heat exchanger 8 are operated so that the solution in the generator G It absorbs heat, and the solution is configured to absorb heat from the outside air in the air-cooled heat exchanger 8, and from the outlet of the absorber A and the diluted solution sent to the generator G via the solution pump Pl and the generator G For heat exchange with a concentrated solution of A heat exchanger Ha is attached, an on-off valve 17 is provided in the middle of the pipe 16 leading to the solution heat exchanger Ha, and the absorber A is connected to the absorber A from the outlet of the air-cooled heat exchanger 8 that supercools the absorbed solution. The air-cooled heat exchanger is connected to the solution pipe 18 extending from the solution heat exchanger Ha and the dilute solution pipe 19 extending from the solution heat exchanger Ha to the generator G through a solution pipe 21 provided with an on-off valve 20 to further supercool the absorption solution. The solution pipe 18 extending from the outlet 8 to the absorber A and the refrigerant pipe 22 on the inlet side of the evaporator E are connected by a bypass pipe 24 provided with an open / close valve 23, and the bypass pipe is used during cooling operation. The on-off valve 20 provided in the solution pipe 21 connecting the on-off valve 23 and the solution pipe 18 and the dilute solution pipe 19 leading to the generator G is closed and the pipe 16 leading to the solution heat exchanger Ha is closed. Open the on-off valve 17 The inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigeration machine X is the solution temperature of the generator G of the absorption refrigeration machine Y through the on-off valve 14 of the bypass circuit 13 that bypasses the heater g of the generator G. If it exceeds, the valve is closed, but during heating operation, the on-off valve 23 of the bypass pipe 24 and the on-off valve 20 provided in the dilute solution pipe 19 extending from the solution pipe 18 to the generator G are opened to perform the solution heat exchange. The on-off valve 17 of the bypass circuit 13 which bypasses the heater g of the generator G is closed by operating the on-off valve 17 of the pipe 16 leading to the generator Ha, and the refrigerant of the heat source side heat exchanger 3 of the vapor compression refrigerator X If the outlet temperature is too low it is to be the closing operation.

With the above-described configuration, the heat source side heat exchanger 3 can be used since the amount of heat generated when the refrigerant of the vapor compression refrigerator X is radiated can be used as a heating source of the absorption refrigerator Y during the cooling operation. Can be reduced. Even if the refrigerant of the vapor compression refrigeration machine X directly flows into the heat source side heat exchanger 3 by bypassing the generator G, the heat source side heat exchanger 3 is changed because the refrigerant temperature of the vapor compression refrigeration machine X is low. Even if it is made smaller, there is no problem and the cost can be reduced.

Moreover, in this invention, when it is comprised as mentioned above, and the refrigerant | coolant temperature of the compressor 1 in the vapor | steam compression refrigeration machine X is low at the time of the partial load at the time of air_conditionaing | cooling operation, the refrigerant | coolant of the said vapor | steam compression refrigeration machine X Opens the on-off valve 14 of the bypass circuit 13 that bypasses the generator G in the absorption refrigeration machine Y, whereby the refrigerant of the vapor compression refrigeration machine X bypasses the generator G of the absorption refrigeration machine Y; Therefore, the refrigerant of the vapor compression refrigerator X having a low temperature does not flow into the generator G to lower the solution temperature of the generator G. Therefore, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y.

Further, according to the present invention, by configuring as described above, when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, the on-off valve 14 of the bypass circuit 13 is closed and the absorption refrigeration is performed. By operating the solution pump Pl of the machine Y, the air-cooling heat exchanger 8 and the cooling fan 10 attached to the air-cooling heat exchanger 8, the refrigerant of the vapor compression refrigerator X is the solution of the absorption refrigerator Y The absorption chiller Y absorbs more heat, and the air-cooled heat exchanger 8 absorbs heat from the outside air. In the refrigeration system that combines the vapor compression refrigeration machine X and the absorption refrigeration machine Y, the heating operation is smoothly performed. It can be carried out.

And in this invention, by having comprised as mentioned above, by operating the solution pump Pl of the said absorption-type refrigerator Y, the said air-cooling heat exchanger 8, and the cooling fan 10, in vapor compression-type refrigerator X The refrigerant absorbs heat from the solution in the generator G of the absorption refrigeration machine Y, and the solution in the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air conditioning operation (in other words, heat pump operation) is performed. Is possible.

In the present invention, as a third means for solving the above Symbol object, a refrigeration apparatus combining an absorption chiller Y and vapor compression refrigerating machine X, the vapor compression type refrigerator X during cooling operation A refrigerant cooling system is employed in which the refrigerant is cooled or supercooled by the evaporator E of the absorption refrigeration machine Y, and the amount of heat generated when the refrigerant of the vapor compression refrigeration machine X is radiated during cooling operation is determined by the absorption refrigeration. In order to use as a heating source of the machine Y, the refrigerant compressed in the vapor compression refrigeration machine X flows into the heater g of the generator G of the absorption refrigeration machine Y. When the refrigerant temperature of the compressor 1 in the machine X is low, a bypass circuit 13 is provided in which the refrigerant of the vapor compression refrigeration machine X bypasses the generator G of the absorption refrigeration machine Y, and the bypass circuit 13 is opened and closed. Attach valve 14 The on-off valve 14 is closed when the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G in the absorption refrigerator Y, and In the generator G of the absorption refrigerator Y, the absorption solution and the refrigerant of the vapor compression refrigerator X exchange heat, and the refrigerant of the vapor compression refrigerator X after the heat exchange is the vapor compression refrigerator. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the refrigerant temperature of the generator G of the absorption chiller Y, the on-off valve 14 of the bypass circuit 13 is opened. The refrigerant of the compression refrigeration machine X is caused to flow into the heat source side heat exchanger 3 in the vapor compression refrigeration machine X by the bypass circuit 13, and the vapor compression refrigeration machine X is cooled during heating operation. When driving Is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the reverse direction, and is configured to function the heat source side heat exchanger 3 during heating operation, while opening and closing the bypass circuit 13 The valve 14 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigeration machine X becomes too low, and the refrigerant of the vapor compression refrigeration machine X is heated by a heater in the generator G. g, the solution pump Pl of the absorption refrigeration machine Y, the air-cooled heat exchanger 8 and the cooling fan 10 provided in the air-cooled heat exchanger 8 are operated so that the solution in the generator G It absorbs heat, and the solution is configured to absorb heat from the outside air in the air-cooled heat exchanger 8, and from the outlet of the absorber A and the diluted solution sent to the generator G via the solution pump Pl and the generator G For heat exchange with a concentrated solution of A heat exchanger Ha is attached, an on-off valve 17 is provided in the middle of the pipe 16 leading to the solution heat exchanger Ha, and the absorber A is connected to the absorber A from the outlet of the air-cooled heat exchanger 8 that supercools the absorbed solution. The air-cooled heat exchanger is connected to the solution pipe 18 extending from the solution heat exchanger Ha and the dilute solution pipe 19 extending from the solution heat exchanger Ha to the generator G through a solution pipe 21 provided with an on-off valve 20 to further supercool the absorption solution. 8 is provided with a bypass pipe 25 which branches from the solution pipe 18 extending from the outlet 8 to the absorber A and reaches the inlet of the evaporator E, and an open / close valve 26 is provided in the bypass pipe 25. A pipe 16 that closes the on-off valve 20 and the on-off valve 26 of the bypass pipe 25 connected to the solution pipe 21 that connects the pipe 18 and the dilute solution pipe 19 that reaches the generator G, and that reaches the solution heat exchanger Ha. On-off valve 1 And the on-off valve 14 of the bypass circuit 13 that bypasses the heater g of the generator G is connected to the generator G of the absorption refrigerator chiller Y where the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X is However, during heating operation, the on-off valve 20 and the bypass pipe 25 connected to the solution pipe 21 connecting the solution pipe 18 and the dilute solution pipe 19 leading to the generator G are opened and closed. The valve 26 is opened, the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is closed, and the on-off valve 14 of the bypass circuit 13 bypassing the heater g of the generator G is connected to the vapor compression refrigeration. When the refrigerant outlet temperature of the heat source side heat exchanger 3 of the machine X becomes too low, the operation is closed .

With the above-described configuration, the heat source side heat exchanger 3 can be used since the amount of heat generated when the refrigerant of the vapor compression refrigerator X is radiated can be used as a heating source of the absorption refrigerator Y during the cooling operation. Can be reduced. Even if the refrigerant of the vapor compression refrigeration machine X directly flows into the heat source side heat exchanger 3 by bypassing the generator G, the heat source side heat exchanger 3 is changed because the refrigerant temperature of the vapor compression refrigeration machine X is low. Even if it is made smaller, there is no problem and the cost can be reduced.

Moreover, in this invention, when it is comprised as mentioned above, and the refrigerant | coolant temperature of the compressor 1 in the vapor | steam compression refrigeration machine X is low at the time of the partial load at the time of air_conditionaing | cooling operation, the refrigerant | coolant of the said vapor | steam compression refrigeration machine X Opens the on-off valve 14 of the bypass circuit 13 that bypasses the generator G in the absorption refrigeration machine Y, whereby the refrigerant of the vapor compression refrigeration machine X bypasses the generator G of the absorption refrigeration machine Y; Therefore, the refrigerant of the vapor compression refrigerator X having a low temperature does not flow into the generator G to lower the solution temperature of the generator G. Therefore, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y.

Further, according to the present invention, by configuring as described above, when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, the on-off valve 14 of the bypass circuit 13 is closed and the absorption refrigeration is performed. By operating the solution pump Pl of the machine Y, the air-cooling heat exchanger 8 and the cooling fan 10 attached to the air-cooling heat exchanger 8, the refrigerant of the vapor compression refrigerator X is the solution of the absorption refrigerator Y The absorption chiller Y absorbs more heat, and the air-cooled heat exchanger 8 absorbs heat from the outside air. In the refrigeration system that combines the vapor compression refrigeration machine X and the absorption refrigeration machine Y, the heating operation is smoothly performed. It can be carried out.

And in this invention, by having comprised as mentioned above, by operating the solution pump Pl of the said absorption-type refrigerator Y, the said air-cooling heat exchanger 8, and the cooling fan 10, in vapor compression-type refrigerator X The refrigerant absorbs heat from the solution in the generator G of the absorption refrigeration machine Y, and the solution in the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air conditioning operation (in other words, heat pump operation) is performed. Is possible.

In the present invention, as a fourth means for solving the above Symbol object, a refrigeration apparatus combining an absorption chiller Y and vapor compression refrigerating machine X, the vapor compression type refrigerator X during cooling operation A refrigerant cooling system is employed in which the refrigerant is cooled or supercooled by the evaporator E of the absorption refrigeration machine Y, and the amount of heat generated when the refrigerant of the vapor compression refrigeration machine X is radiated during cooling operation is determined by the absorption refrigeration. In order to use as a heating source of the machine Y, the refrigerant compressed in the vapor compression refrigeration machine X flows into the heater g of the generator G of the absorption refrigeration machine Y. When the refrigerant temperature of the compressor 1 in the machine X is low, a bypass circuit 13 is provided in which the refrigerant of the vapor compression refrigeration machine X bypasses the generator G of the absorption refrigeration machine Y, and the bypass circuit 13 is opened and closed. Attach valve 14 The on-off valve 14 is closed when the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G in the absorption refrigerator Y, and In the generator G of the absorption refrigerator Y, the absorption solution and the refrigerant of the vapor compression refrigerator X exchange heat, and the refrigerant of the vapor compression refrigerator X after the heat exchange is the vapor compression refrigerator. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the refrigerant temperature of the generator G of the absorption chiller Y, the on-off valve 14 of the bypass circuit 13 is opened. The refrigerant of the compression refrigeration machine X is caused to flow into the heat source side heat exchanger 3 in the vapor compression refrigeration machine X by the bypass circuit 13, and the vapor compression refrigeration machine X is cooled during heating operation. When driving Is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the reverse direction, and is configured to function the heat source side heat exchanger 3 during heating operation, while opening and closing the bypass circuit 13 The valve 14 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigeration machine X becomes too low, and the refrigerant of the vapor compression refrigeration machine X is heated by a heater in the generator G. g, the solution pump Pl of the absorption refrigeration machine Y, the air-cooled heat exchanger 8 and the cooling fan 10 provided in the air-cooled heat exchanger 8 are operated so that the solution in the generator G The solution absorbs heat, and the solution is configured to absorb heat from the outside air in the air-cooled heat exchanger 8, and the solution pipe 18 extending from the outlet of the air-cooled heat exchanger 8 for supercooling the absorbing solution to the absorber A and the solution From the heat exchanger Ha to the generator The dilute solution pipe 19 reaching G is connected by a solution pipe 21 provided with an on-off valve 20, and the solution pipe 18 extending from the outlet of the air-cooled heat exchanger 8 for supercooling the absorbing solution to the absorber A and the above-mentioned The refrigerant pipe 22 on the inlet side of the evaporator E is connected by a bypass pipe 24 having an on-off valve 23 interposed, and an on-off valve 27 is provided on the solution pipe 18 on the inlet side of the absorber A. During the cooling operation, the on-off valve 20 provided in the solution pipe 21 and the on-off valve 23 of the bypass pipe 24 are closed, and the on-off valve 27 of the solution pipe 18 is opened to reach the solution heat exchanger Ha. The on-off valve 17 of the bypass circuit 13 in the vapor compression refrigeration machine X absorbs the on-off valve 14 of the bypass circuit 13 that opens the on-off valve 17 of the pipe 16 and bypasses the heater g of the generator G. Of machine Y When the temperature of the living vessel G exceeds the solution temperature, the operation is closed. During heating operation, the on-off valve 20 interposed in the solution pipe 21 and the on-off valve 23 of the bypass pipe 24 are opened and the on-off valve of the solution pipe 18 is opened. 27 is closed, the open / close valve 17 of the pipe 16 leading to the solution heat exchanger Ha is closed, and the open / close valve 14 of the bypass circuit 13 bypassing the heater g of the generator G is connected to the vapor compression refrigerator. coolant outlet temperature of the heat source side heat exchanger 3 of X is that not so as to closing operation when too low.

With the above-described configuration, the heat source side heat exchanger 3 can be used since the amount of heat generated when the refrigerant of the vapor compression refrigerator X is radiated can be used as a heating source of the absorption refrigerator Y during the cooling operation. Can be reduced. Even if the refrigerant of the vapor compression refrigeration machine X directly flows into the heat source side heat exchanger 3 by bypassing the generator G, the heat source side heat exchanger 3 is changed because the refrigerant temperature of the vapor compression refrigeration machine X is low. Even if it is made smaller, there is no problem and the cost can be reduced.

Moreover, in this invention, when it is comprised as mentioned above, and the refrigerant | coolant temperature of the compressor 1 in the vapor | steam compression refrigeration machine X is low at the time of the partial load at the time of air_conditionaing | cooling operation, the refrigerant | coolant of the said vapor compression refrigeration machine X Opens the on-off valve 14 of the bypass circuit 13 that bypasses the generator G in the absorption refrigeration machine Y, whereby the refrigerant of the vapor compression refrigeration machine X bypasses the generator G of the absorption refrigeration machine Y; Therefore, the refrigerant of the vapor compression refrigerator X having a low temperature does not flow into the generator G to lower the solution temperature of the generator G. Therefore, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y.

Further, according to the present invention, by configuring as described above, when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, the on-off valve 14 of the bypass circuit 13 is closed and the absorption refrigeration is performed. By operating the solution pump Pl of the machine Y, the air-cooling heat exchanger 8 and the cooling fan 10 attached to the air-cooling heat exchanger 8, the refrigerant of the vapor compression refrigerator X is the solution of the absorption refrigerator Y The absorption chiller Y absorbs more heat, and the air-cooled heat exchanger 8 absorbs heat from the outside air. In the refrigeration system that combines the vapor compression refrigeration machine X and the absorption refrigeration machine Y, the heating operation is smoothly performed. It can be carried out.

And in this invention, by having comprised as mentioned above, by operating the solution pump Pl of the said absorption-type refrigerator Y, the said air-cooling heat exchanger 8, and the cooling fan 10, in vapor compression-type refrigerator X The refrigerant absorbs heat from the solution in the generator G of the absorption refrigeration machine Y, and the solution in the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air conditioning operation (in other words, heat pump operation) is performed. Is possible.

In the present invention, as a fifth means for solving the above-described problem, in the refrigeration apparatus provided with the first , second, third or fourth means, the absorber A in the absorption refrigeration machine Y. When the absorption solution entering is supercooled by the air-cooling heat exchanger 8, and the absorption heat is removed by the absorption solution only by absorbing the refrigerant vapor in the absorber A. The structure of the absorber A can be simplified and miniaturized as compared with the direct cooling method in which the absorbing solution is cooled by water cooling or air cooling while absorbing the refrigerant vapor by the absorber A.

In the present invention, as a sixth means for solving the above problem, in the refrigeration apparatus provided with the fourth means, the spreader when the solution is allowed to flow into the evaporator E is used for the refrigerant. A separate sprayer may be attached or shared, and in such a configuration, the solution is successfully sprayed onto the heat transfer surface of the evaporator E.

In the present invention, further, as the seventh means for solving the above problems, the first, second, third, fourth, fifth or refrigeration system including a sixth means, the evaporator E can be configured such that the liquid refrigerant is transient and flows through the heat transfer surface, and the non-evaporated refrigerant moves to the absorber A side and is absorbed by the absorbing solution. The liquid refrigerant from the condenser C flows down the heat transfer surface of the evaporator E, but the non-evaporated refrigerant moves to the absorber A and is then absorbed by the absorbing solution. The structure with A can be simplified.

In the present invention, further, as an eighth means for solving the above problems, the first, second, third, fourth, fifth, sixth or refrigeration system including a seventh means, A plurality of the vapor compression refrigeration machines X may be provided, and the exhaust heat of those refrigerants may be collected, and the refrigerant vapor may be generated and driven by the generator G of one absorption refrigeration machine Y. In such a configuration, it is possible to drive one absorption chiller Y by effectively using the exhaust heat of the plurality of vapor compression chillers X.

Frozen in the present invention, furthermore, the ninth means for solving the above problems, the first, second, third, fourth, fifth, sixth, seventh or with the eighth means In the apparatus, exhaust heat can also be used as a heat source of the generator G. When configured in this way, a slightly low temperature exhaust heat hot water can be used effectively.

In the present invention, as a tenth means for solving the above-described problem, in the refrigeration apparatus provided with the ninth means, solar heat can be used as the exhaust heat. The range of use of the device can be greatly expanded.

According to the first means of the present invention, in the refrigerating apparatus combining the vapor compression refrigerator X and the absorption refrigerator Y, the refrigerant of the vapor compression refrigerator X during the cooling operation is used as the absorption refrigerator. Adopting a refrigerant cooling system that cools or supercools with the evaporator E of Y, and uses the amount of heat when radiating the refrigerant of the vapor compression refrigerator X during cooling operation as a heating source of the absorption refrigerator Y Therefore, the refrigerant compressed in the vapor compression refrigerator X is caused to flow into the heater g of the generator G of the absorption refrigerator Y, but the compressor 1 in the vapor compression refrigerator X such as during partial load. When the refrigerant temperature is low, a bypass circuit 13 is provided so that the refrigerant of the vapor compression refrigerator X bypasses the generator G, and an on-off valve 14 is attached to the bypass circuit 13, and the vapor compression Type refrigerator X When the refrigerant temperature at the inlet of the bypass circuit 13 exceeds the solution temperature of the generator G in the absorption refrigeration machine Y, the on-off valve 14 is configured to close, and the generator G in the absorption refrigeration machine Y is configured. The refrigerant in the vapor compression refrigeration machine X exchanges heat and the refrigerant in the vapor compression refrigeration machine X after heat exchange enters the heat source side heat exchanger 3 of the vapor compression refrigeration machine X. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the solution temperature of the generator G of the absorption refrigeration machine Y, the on-off valve 14 of the bypass circuit 13 is opened, and the bypass circuit 13 As a configuration in which the refrigerant of the compression refrigerator X flows into the heat source side heat exchanger 3 in the vapor compression refrigerator X, the refrigerant of the vapor compression refrigerator X is radiated and cooled by the heat source side heat exchanger 3. After absorption refrigeration Since it flows into the heat exchanger e in the evaporator E of Y, and is cooled or supercooled, the performance of the vapor compression refrigeration machine X is greatly improved by cooling with the absorption chiller Y during cooling operation. Since the heat quantity at the time of releasing heat from the refrigerant of the vapor compression refrigerator X can be used as a heating source for the absorption refrigerator Y, the heat source side heat exchanger 3 can be made smaller. There is. When the refrigerant temperature of the vapor compression refrigerator X is lower than the solution temperature of the generator G in the absorption refrigerator Y, the vapor compression type is opened by opening the on-off valve 14 provided in the bypass circuit 13. Since the temperature of the solution in the generator G of the refrigerator X is not reduced, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y. is there. Further, the vapor compression refrigerator X is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the direction opposite to that during the cooling operation during the heating operation. While the heat exchanger 3 is configured to function, the on-off valve 14 of the bypass circuit 13 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, and the absorption refrigeration machine Y The refrigerant of the vapor compression refrigeration machine X absorbs heat from the solution of the absorption refrigeration machine Y by operating the solution pump Pl, the air cooling heat exchanger 8 and the cooling fan 10 attached to the air cooling heat exchanger 8. In addition, since the solution of the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooled heat exchanger 8, the heating operation is smoothly performed in the refrigeration apparatus in which the vapor compression refrigeration machine X and the absorption refrigeration machine Y are combined. To do An effect that can be there. In addition, a solution heat exchanger Ha for exchanging heat between the dilute solution sent from the outlet of the absorber A via the solution pump Pl to the generator G and the concentrated solution from the generator G is provided, and the solution heat exchange is performed. An on-off valve 17 is provided in the middle of the pipe 16 leading to the absorber Ha, and the solution pipe 18 extending from the outlet of the air-cooled heat exchanger 8 for supercooling the absorption solution to the absorber A and the solution heat exchanger Ha. The dilute solution pipe 19 leading to the generator G is connected by a solution pipe 21 provided with an on-off valve 20, and during the cooling operation, the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is opened and the The on-off valve 20 of the bypass line 13 in the vapor compression refrigeration machine X absorbs the on-off valve 14 of the bypass circuit 13 that closes the on-off valve 20 of the solution pipe 21 and bypasses the heater g of the generator G. Refrigerator Y When the solution temperature of the generator G is exceeded, it is closed, but during heating operation, the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is closed, and the on-off valve 20 of the solution pipe 21 is closed by the vapor compression type. When the refrigerant outlet temperature of the heat source side heat exchanger 3 of the refrigerator X becomes too low, the refrigerant pump P1 of the absorption refrigerator Y, the air-cooled heat exchanger 8 and the air-cooled heat exchanger 8 are closed. By operating the attached cooling fan 10, the refrigerant of the vapor compression refrigerator X absorbs heat from the solution of the absorption refrigerator Y, and the solution of the absorption refrigerator Y absorbs heat from the outside air in the air-cooling heat exchanger 8. Therefore, there is an effect that the cooling / heating operation (in other words, the heat pump operation) becomes possible.

According to the second means of the present invention, in the refrigerating apparatus in which the vapor compression refrigerator X and the absorption refrigerator Y are combined, the refrigerant of the vapor compression refrigerator X during the cooling operation is used as the absorption refrigerator. Adopting a refrigerant cooling system that cools or supercools with the evaporator E of Y, and uses the amount of heat when radiating the refrigerant of the vapor compression refrigerator X during cooling operation as a heating source of the absorption refrigerator Y Therefore, the refrigerant compressed in the vapor compression refrigerator X is caused to flow into the heater g of the generator G of the absorption refrigerator Y, but the compressor 1 in the vapor compression refrigerator X such as during partial load. When the refrigerant temperature is low, a bypass circuit 13 is provided so that the refrigerant of the vapor compression refrigerator X bypasses the generator G, and an on-off valve 14 is attached to the bypass circuit 13, and the vapor compression Type refrigerator X When the refrigerant temperature at the inlet of the bypass circuit 13 exceeds the solution temperature of the generator G in the absorption refrigeration machine Y, the on-off valve 14 is configured to close, and the generator G in the absorption refrigeration machine Y is configured. The refrigerant in the vapor compression refrigeration machine X exchanges heat and the refrigerant in the vapor compression refrigeration machine X after heat exchange enters the heat source side heat exchanger 3 of the vapor compression refrigeration machine X. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the solution temperature of the generator G of the absorption refrigeration machine Y, the on-off valve 14 of the bypass circuit 13 is opened, and the bypass circuit 13 As a configuration in which the refrigerant of the compression refrigerator X flows into the heat source side heat exchanger 3 in the vapor compression refrigerator X, the refrigerant of the vapor compression refrigerator X is radiated and cooled by the heat source side heat exchanger 3. After absorption refrigeration Since it flows into the heat exchanger e in the evaporator E of Y, and is cooled or supercooled, the performance of the vapor compression refrigeration machine X is greatly improved by cooling with the absorption chiller Y during cooling operation. Since the heat quantity at the time of releasing heat from the refrigerant of the vapor compression refrigerator X can be used as a heating source for the absorption refrigerator Y, the heat source side heat exchanger 3 can be made smaller. There is. When the refrigerant temperature of the vapor compression refrigerator X is lower than the solution temperature of the generator G in the absorption refrigerator Y, the vapor compression type is opened by opening the on-off valve 14 provided in the bypass circuit 13. Since the temperature of the solution in the generator G of the refrigerator X is not reduced, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y. is there. Further, the vapor compression refrigerator X is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the direction opposite to that during the cooling operation during the heating operation. While the heat exchanger 3 is configured to function, the on-off valve 14 of the bypass circuit 13 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, and the absorption refrigeration machine Y The refrigerant of the vapor compression refrigeration machine X absorbs heat from the solution of the absorption refrigeration machine Y by operating the solution pump Pl, the air cooling heat exchanger 8 and the cooling fan 10 attached to the air cooling heat exchanger 8. In addition, since the solution of the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooled heat exchanger 8, the heating operation is smoothly performed in the refrigeration apparatus in which the vapor compression refrigeration machine X and the absorption refrigeration machine Y are combined. To do An effect that can be there. In addition, a solution heat exchanger Ha for exchanging heat between the dilute solution sent from the outlet of the absorber A via the solution pump Pl to the generator G and the concentrated solution from the generator G is provided, and the solution heat exchange is performed. An on-off valve 17 is provided in the middle of the pipe 16 leading to the vessel Ha, and a dilute solution pipe 19 extending from the solution heat exchanger Ha to the generator G is connected by a solution pipe 21 provided with an on-off valve 20; Furthermore, a bypass pipe comprising a solution pipe 18 extending from the outlet of the air-cooling heat exchanger 8 for supercooling the absorbent solution to the absorber A and a refrigerant pipe 22 on the inlet side of the evaporator E via an open / close valve 23. 24, and at the time of cooling operation, the on-off valve 23 connected to the on-off valve 23 of the bypass pipe 24 and the solution pipe 21 connecting the solution pipe 18 and the dilute solution pipe 19 reaching the generator G is closed. And the solution heat exchanger H The on-off valve 17 of the bypass circuit 13 in the vapor compression refrigeration machine X absorbs the on-off valve 14 of the bypass circuit 13 that opens the on-off valve 17 of the piping 16 leading to the pipe G and bypasses the heater g of the generator G. When the solution temperature of the generator G of the refrigerating machine Y exceeds the temperature, it is closed, but during the heating operation, it is interposed in the open / close valve 23 of the bypass pipe 24 and the dilute solution pipe 19 extending from the solution pipe 18 to the generator G. The on-off valve 20 is opened, the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is closed, and the on-off valve 14 of the bypass circuit 13 bypassing the heater g of the generator G is connected to the vapor compression type. When the refrigerant outlet temperature of the heat source side heat exchanger 3 of the refrigerator X becomes too low, the refrigerant pump P1 of the absorption refrigerator Y, the air-cooling heat exchanger 8 and the cooling fan 1 are closed. , The refrigerant in the vapor compression refrigerator X absorbs heat from the solution in the generator G of the absorption refrigerator Y, and the solution in the absorption refrigerator Y absorbs heat from the outside air in the air-cooled heat exchanger 8. Therefore, there is an effect that the cooling / heating operation (in other words, the heat pump operation) becomes possible.

According to the third means of the present invention, in the refrigerating apparatus in which the vapor compression refrigerator X and the absorption refrigerator Y are combined, the refrigerant of the vapor compression refrigerator X during the cooling operation is used as the absorption refrigerator. Adopting a refrigerant cooling system that cools or supercools with the evaporator E of Y, and uses the amount of heat when radiating the refrigerant of the vapor compression refrigerator X during cooling operation as a heating source of the absorption refrigerator Y Therefore, the refrigerant compressed in the vapor compression refrigerator X is caused to flow into the heater g of the generator G of the absorption refrigerator Y, but the compressor 1 in the vapor compression refrigerator X such as during partial load. When the refrigerant temperature is low, a bypass circuit 13 is provided so that the refrigerant of the vapor compression refrigerator X bypasses the generator G, and an on-off valve 14 is attached to the bypass circuit 13, and the vapor compression Type refrigerator X When the refrigerant temperature at the inlet of the bypass circuit 13 exceeds the solution temperature of the generator G in the absorption refrigeration machine Y, the on-off valve 14 is configured to close, and the generator G in the absorption refrigeration machine Y is configured. The refrigerant in the vapor compression refrigeration machine X exchanges heat and the refrigerant in the vapor compression refrigeration machine X after heat exchange enters the heat source side heat exchanger 3 of the vapor compression refrigeration machine X. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the solution temperature of the generator G of the absorption refrigeration machine Y, the on-off valve 14 of the bypass circuit 13 is opened, and the bypass circuit 13 As a configuration in which the refrigerant of the compression refrigerator X flows into the heat source side heat exchanger 3 in the vapor compression refrigerator X, the refrigerant of the vapor compression refrigerator X is radiated and cooled by the heat source side heat exchanger 3. After absorption refrigeration Since it flows into the heat exchanger e in the evaporator E of Y, and is cooled or supercooled, the performance of the vapor compression refrigeration machine X is greatly improved by cooling with the absorption chiller Y during cooling operation. Since the heat quantity at the time of releasing heat from the refrigerant of the vapor compression refrigerator X can be used as a heating source for the absorption refrigerator Y, the heat source side heat exchanger 3 can be made smaller. There is. When the refrigerant temperature of the vapor compression refrigerator X is lower than the solution temperature of the generator G in the absorption refrigerator Y, the vapor compression type is opened by opening the on-off valve 14 provided in the bypass circuit 13. Since the temperature of the solution in the generator G of the refrigerator X is not reduced, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y. is there. Further, the vapor compression refrigerator X is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the direction opposite to that during the cooling operation during the heating operation. While the heat exchanger 3 is configured to function, the on-off valve 14 of the bypass circuit 13 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, and the absorption refrigeration machine Y The refrigerant of the vapor compression refrigeration machine X absorbs heat from the solution of the absorption refrigeration machine Y by operating the solution pump Pl, the air cooling heat exchanger 8 and the cooling fan 10 attached to the air cooling heat exchanger 8. In addition, since the solution of the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooled heat exchanger 8, the heating operation is smoothly performed in the refrigeration apparatus in which the vapor compression refrigeration machine X and the absorption refrigeration machine Y are combined. To do An effect that can be there. In addition, a solution heat exchanger Ha for exchanging heat between the dilute solution sent from the outlet of the absorber A via the solution pump Pl to the generator G and the concentrated solution from the generator G is provided, and the solution heat exchange is performed. An on-off valve 17 is provided in the middle of the pipe 16 leading to the absorber Ha, and the solution pipe 18 extending from the outlet of the air-cooled heat exchanger 8 for supercooling the absorption solution to the absorber A and the solution heat exchanger Ha. A solution pipe from the outlet of the air-cooling heat exchanger 8 that connects the dilute solution pipe 19 leading to the generator G to a solution pipe 21 provided with an on-off valve 20 and further supercools the absorbed solution to the absorber A. A bypass pipe 25 branched from 18 to the inlet of the evaporator E is provided, and an open / close valve 26 is provided in the bypass pipe 25. During cooling operation, a dilute solution pipe 19 reaching the solution pipe 18 and the generator G is provided. Solution arrangement to connect with The opening / closing valve 20 of the bypass pipe 25 and the opening / closing valve 26 of the bypass pipe 25 are closed and the opening / closing valve 17 of the pipe 16 leading to the solution heat exchanger Ha is opened. The on-off valve 14 of the bypass circuit 13 to be bypassed is closed when the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G of the absorption refrigerator Y. Then, the on-off valve 20 and the on-off valve 26 of the bypass pipe 25 connected to the solution pipe 21 connecting the solution pipe 18 and the dilute solution pipe 19 leading to the generator G are opened, and the solution heat exchanger Ha is turned on. The on-off valve 17 of the bypass circuit 13 that closes the on-off valve 17 of the pipe 16 to reach and bypasses the heater g of the generator G is connected to the refrigerant outlet of the heat source side heat exchanger 3 of the vapor compression refrigerator X. The refrigerant in the vapor compression refrigeration machine X is operated by operating the solution pump Pl of the absorption refrigeration machine Y, the air-cooling heat exchanger 8 and the cooling fan 10 when the temperature becomes too low. Absorbs heat from the solution in the generator G of the absorption chiller Y, and the solution in the absorption chiller Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that the cooling / heating operation (in other words, the heat pump operation) is performed. There is also an effect that it becomes possible.

According to the fourth means of the present invention, in the refrigerating apparatus combining the vapor compression refrigerator X and the absorption refrigerator Y, the refrigerant of the vapor compression refrigerator X during the cooling operation is used as the absorption refrigerator. Adopting a refrigerant cooling system that cools or supercools with the evaporator E of Y, and uses the amount of heat when radiating the refrigerant of the vapor compression refrigerator X during cooling operation as a heating source of the absorption refrigerator Y Therefore, the refrigerant compressed in the vapor compression refrigerator X is caused to flow into the heater g of the generator G of the absorption refrigerator Y, but the compressor 1 in the vapor compression refrigerator X such as during partial load. When the refrigerant temperature is low, a bypass circuit 13 is provided so that the refrigerant of the vapor compression refrigerator X bypasses the generator G, and an on-off valve 14 is attached to the bypass circuit 13, and the vapor compression Type refrigerator X When the refrigerant temperature at the inlet of the bypass circuit 13 exceeds the solution temperature of the generator G in the absorption refrigeration machine Y, the on-off valve 14 is configured to close, and the generator G in the absorption refrigeration machine Y is configured. The refrigerant in the vapor compression refrigeration machine X exchanges heat and the refrigerant in the vapor compression refrigeration machine X after heat exchange enters the heat source side heat exchanger 3 of the vapor compression refrigeration machine X. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the solution temperature of the generator G of the absorption refrigeration machine Y, the on-off valve 14 of the bypass circuit 13 is opened, and the bypass circuit 13 As a configuration in which the refrigerant of the compression refrigerator X flows into the heat source side heat exchanger 3 in the vapor compression refrigerator X, the refrigerant of the vapor compression refrigerator X is radiated and cooled by the heat source side heat exchanger 3. After absorption refrigeration Since it flows into the heat exchanger e in the evaporator E of Y, and is cooled or supercooled, the performance of the vapor compression refrigeration machine X is greatly improved by cooling with the absorption chiller Y during cooling operation. Since the heat quantity at the time of releasing heat from the refrigerant of the vapor compression refrigerator X can be used as a heating source for the absorption refrigerator Y, the heat source side heat exchanger 3 can be made smaller. There is. When the refrigerant temperature of the vapor compression refrigerator X is lower than the solution temperature of the generator G in the absorption refrigerator Y, the vapor compression type is opened by opening the on-off valve 14 provided in the bypass circuit 13. Since the temperature of the solution in the generator G of the refrigerator X is not reduced, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y. is there. Further, the vapor compression refrigerator X is provided with a four-way switching valve 2 for switching the refrigerant flow direction so that the refrigerant flows in the direction opposite to that during the cooling operation during the heating operation. While the heat exchanger 3 is configured to function, the on-off valve 14 of the bypass circuit 13 is closed when the refrigerant outlet temperature of the heat source side heat exchanger 3 becomes too low, and the absorption refrigeration machine Y The refrigerant of the vapor compression refrigeration machine X absorbs heat from the solution of the absorption refrigeration machine Y by operating the solution pump Pl, the air cooling heat exchanger 8 and the cooling fan 10 attached to the air cooling heat exchanger 8. In addition, since the solution of the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooled heat exchanger 8, the heating operation is smoothly performed in the refrigeration apparatus in which the vapor compression refrigeration machine X and the absorption refrigeration machine Y are combined. To do An effect that can be there. In addition, the on-off valve 20 connects the solution pipe 18 from the outlet of the air-cooled heat exchanger 8 for supercooling the absorbent solution to the absorber A and the dilute solution pipe 19 from the solution heat exchanger Ha to the generator G. Connected by an intervening solution pipe 21 and further opens and closes a solution pipe 18 from the outlet of the air-cooled heat exchanger 8 for supercooling the absorbing solution to the absorber A and a refrigerant pipe 22 on the inlet side of the evaporator E. In addition to being connected by a bypass pipe 24 provided with a valve 23, an open / close valve 27 is provided in the solution pipe 18 on the inlet side of the absorber A, and the open / close provided in the solution pipe 21 during cooling operation. The valve 20 and the on-off valve 23 of the bypass pipe 24 are closed, the on-off valve 27 of the solution pipe 18 is opened, the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is opened, and the generation Heater g of vessel G The on-off valve 14 of the bypass circuit 13 that bypasses is closed when the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G of the absorption refrigerator Y. The on-off valve 20 provided in the solution pipe 21 and the on-off valve 23 of the bypass pipe 24 are opened, and the on-off valve 27 of the solution pipe 18 is closed, and the pipe 16 reaching the solution heat exchanger Ha is opened. The refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigerator X is too low in the on-off valve 14 of the bypass circuit 13 that closes the on-off valve 17 and bypasses the heater g of the generator G. In this case, by operating the solution pump Pl of the absorption refrigeration machine Y, the air-cooling heat exchanger 8 and the cooling fan 10, the refrigerant in the vapor compression refrigeration machine X is The absorption refrigeration machine Y absorbs heat from the solution in the generator G, and the absorption refrigeration machine Y solution absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air conditioning operation (in other words, heat pump operation) is possible. There is also an effect of becoming.

As in the fifth means of the present invention, in the refrigeration apparatus provided with the first , second, third or fourth means, the absorption solution entering the absorber A in the absorption chiller Y is air-cooled heat exchange. The refrigerant is supercooled by the cooler 8 and only absorbs the refrigerant vapor in the absorber A. The absorption heat is removed by the absorbing solution. In this configuration, the refrigerant vapor is absorbed by the absorber A. The structure of the absorber A can be simplified and reduced in size as compared with the direct cooling method in which the absorbing solution is cooled by water cooling or air cooling while absorbing.

As in the sixth means of the present invention, in the refrigerating apparatus provided with the fourth means, is the spreader installed when the solution is allowed to flow into the evaporator E, attached separately from the refrigerant? Alternatively, it can be shared, and in such a configuration, the solution is successfully spread on the heat transfer surface of the evaporator E.

As in the seventh means of the present invention, the first, second, third, fourth, fifth or the refrigeration system including a sixth means, the evaporator E, the liquid refrigerant transient It can also be configured such that the non-evaporated refrigerant moves to the absorber A side and is absorbed by the absorbing solution, and in such a case, the liquid refrigerant from the condenser C Flows down the heat transfer surface of the evaporator E, but the unevaporated refrigerant moves to the absorber A and is then absorbed by the absorbing solution, thereby simplifying the structure of the evaporator E and the absorber A. .

As in the eighth means of the present invention, the first, second, third, fourth, fifth, sixth or the refrigeration system including a seventh means, the vapor compression type refrigerator X It is also possible to configure a plurality of units, recover the exhaust heat of each of the refrigerants, and generate and drive the refrigerant vapor with the generator G of one absorption refrigeration machine Y. When configured as such, One absorption refrigeration machine Y can be driven by effectively utilizing the exhaust heat of a plurality of vapor compression refrigeration machines X.

As in the ninth means of the present invention, the first, second, third, fourth, fifth, sixth, seventh or refrigeration system including a first means 8, of the generator G Exhaust heat can also be used as a heat source. When configured as such, a slightly low temperature exhaust heat hot water can be used effectively.

As in the tenth means of the present invention, in the refrigeration apparatus provided with the ninth means, solar heat can also be used as the exhaust heat, and in such a case, the use range of the refrigeration apparatus is greatly expanded. can do.

It is the refrigerating cycle in the freezing apparatus concerning 1st Embodiment of this invention. It is the refrigerating cycle in the freezing apparatus concerning 2nd Embodiment of this invention. It is the refrigerating cycle in the freezing apparatus concerning 3rd Embodiment of this invention. It is the refrigerating cycle in the freezing apparatus concerning the 4th Embodiment of this invention. It is the refrigerating cycle in the freezing apparatus concerning the 5th Embodiment of this invention. It is the refrigerating cycle in the freezing apparatus concerning the 6th Embodiment of this invention. It is the refrigerating cycle in the freezing apparatus concerning the 7th Embodiment of this invention. It is the refrigerating cycle in the refrigerating device concerning the 8th Embodiment of this invention.

  Hereinafter, several preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First Embodiment FIG. 1 shows a refrigeration cycle in a refrigeration apparatus according to a first embodiment of the present invention.

  This refrigeration cycle includes, for example, a vapor compression refrigeration machine X and an absorption refrigeration machine Y using CO 2 as a refrigerant. The vapor compression refrigeration machine X includes a compressor 1 and a four-way switching valve 2. While the air-cooled heat source side heat exchanger 3 and the two utilization side heat exchangers 4 and 4 are configured, the absorption refrigerator Y has an excellent ability to absorb a refrigerant (for example, water). A generator G for heating and concentrating the solution with a heating medium (for example, waste water) in order to restore the refrigerant absorption capacity of an aqueous solution (for example, LiBr) of an absorption liquid (for example, LiBr); The generator G introduces vapor (refrigerant) separated from the solution and cools it to liquefy it, and introduces the refrigerant liquefied by the condenser C and evaporates under low pressure. (Vaporization) the evaporator E and the evaporator E In order to concentrate the absorber (dilute solution) diluted by absorbing the vapor (refrigerant) with the absorber A that sprays the supercooled solution to absorb the vapor (refrigerant) A solution pump Pl for feeding again into the generator G and an air cooling heat exchanger 8 for supercooling the absorbing solution entering the absorber A are provided. Reference numeral 5 is an accumulator, 6 is a cooling fan attached to the heat source side heat exchanger 3, 7A is a cooling expansion mechanism, 7B is a heating expansion mechanism, 9 is a cooling fan attached to the condenser C, and 10 is air cooling heat. A cooling fan attached to the exchanger 8, 11 A is a check valve attached to the cooling expansion mechanism 7 A, 11 B is a check valve attached to the heating expansion mechanism 7 B, and Ha is a dilute solution from the absorber A Is a solution heat exchanger for exchanging heat between a part of (a dilute solution supplied to the generator G) and the concentrated solution discharged from the generator G.

  In the vapor compression refrigeration machine X, the refrigerant (for example, CO2) discharged from the compressor 1 is in the cooling operation, the four-way switching valve 2, the heat source side heat exchanger 3, the expansion mechanisms 7A and 7A, the usage side. It returns to the compressor 1 through the heat exchangers 4 and 4, the four-way switching valve 2 and the accumulator 5, and during the heating operation, the four-way switching valve 2, the use side heat exchangers 4 and 4, the expansion mechanism 7B, and the heat source side heat. The refrigerant is returned to the compressor 1 through the exchanger 3, the four-way switching valve 2, and the accumulator 5, and in the process, cooling and heating actions are obtained in the use side heat exchangers 4 and 4. ing.

  On the other hand, the absorption refrigeration machine Y uses a transient refrigerant type evaporator E in which the liquid refrigerant from the condenser C is sprayed from the upper part of the evaporator E to the heat transfer surface. In the absorber A housed in the fuselage Z integrated with the refrigerant E, the refrigerant vapor evaporated by the evaporator E is simply absorbed, and the absorbed heat is removed by sensible heat of the supercooled solution L. It is an absorption refrigerator of the (solution separation cooling) system.

  The refrigeration apparatus according to the present embodiment employs a refrigerant cooling system in which the refrigerant of the vapor compression refrigeration machine X is cooled or supercooled by the evaporator E of the absorption refrigeration machine Y during the cooling operation. The refrigerant compressed in the vapor compression refrigeration machine X is absorbed in order to use the amount of heat generated when radiating the refrigerant of the vapor compression refrigeration machine X during cooling operation as a heating source of the absorption refrigeration machine Y. When the refrigerant temperature of the compressor 1 in the vapor compression refrigerator X is low, such as during partial load, the refrigerant of the vapor compression refrigerator X is introduced into the heater g of the generator G of the refrigerator Y. Is provided with a bypass circuit 13 so as to bypass the generator G, and an on-off valve 14 is attached to the bypass circuit 13. When the refrigerant temperature at the inlet of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G in the absorption refrigerator Y, the on-off valve 14 is closed, and the absorption refrigerator In the generator G in Y, the absorption solution and the refrigerant of the vapor compression refrigeration machine X perform heat exchange, and after the heat exchange, the refrigerant of the vapor compression refrigeration machine X is exchanged with heat on the heat source side of the vapor compression refrigeration machine X. If the inlet refrigerant temperature of the bypass circuit 13 is equal to or lower than the solution temperature of the generator G of the absorption refrigeration machine Y, the on-off valve 14 of the bypass circuit 13 is opened, and the bypass circuit 13 performs vapor compression. The refrigerant of the refrigerating machine X flows into the heat source side heat exchanger 3 in the vapor compression refrigerating machine X, and from the heat source side heat exchanger 3 to the heat exchanger e of the evaporator E in the absorption refrigerating machine Y. It is configured to flow in

  With the above-described configuration, during cooling operation, the heat conversion by the absorption refrigeration machine Y greatly improves the performance of the vapor compression refrigeration machine X and at the same time releases heat from the refrigerant of the vapor compression refrigeration machine X. Since the amount of heat can be used as a heating source for the absorption refrigerator Y, the heat source side heat exchanger 3 can be made smaller. Even if the refrigerant of the vapor compression refrigeration machine X directly flows into the heat source side heat exchanger 3 by bypassing the generator G, the heat source side heat exchanger 3 is changed because the refrigerant temperature of the vapor compression refrigeration machine X is low. Even if it is made smaller, there is no problem and the cost can be reduced. Furthermore, by having comprised as mentioned above, when the refrigerant | coolant temperature of the compressor 1 in the vapor | steam compression refrigeration machine X is low, such as the time of the partial load at the time of cooling operation, the refrigerant | coolant of the said vapor | steam compression refrigeration machine X is an absorption type. By opening the on-off valve 14 of the bypass circuit 13 that bypasses the generator G in the refrigerator Y, the refrigerant of the vapor compression refrigerator X having a low temperature flows into the generator G of the absorption refrigerator Y, and It does not reduce the solution temperature of the generator G. Therefore, with a simple configuration in which the bypass circuit 13 and the on-off valve 14 are provided, the exhaust heat of the vapor compression refrigerator X can be effectively used as a heating source for the absorption refrigerator Y during the cooling operation. .

  In the present embodiment, the absorption solution entering the absorber A in the absorption refrigerator Y is air-cooled and supercooled by the heat exchanger 8, and the absorber A absorbs the refrigerant vapor only by absorbing the refrigerant vapor. Is an indirect air cooling method that removes the absorption solution by sensible heat, and in such a case, compared to a direct cooling method in which the absorption solution is cooled by water cooling or air cooling while absorbing the refrigerant vapor in the absorber A, The structure of the absorber A can be simplified and downsized.

Second Embodiment FIG. 2 shows a refrigeration cycle in a refrigeration apparatus according to a second embodiment of the present invention.

  In this case, in the refrigeration apparatus in which the vapor compression refrigeration machine X and the absorption refrigeration machine Y are combined, the refrigerant of the vapor compression refrigeration machine X is in the cooling operation during the heating operation by the switching operation of the four-way switching valve 2. The heat source side heat exchanger 3 of the vapor compression refrigeration machine X is switched to flow in the reverse direction and is configured to function, while the on-off valve 14 of the bypass circuit 13 is a heat source of the vapor compression refrigeration machine X. When the refrigerant outlet temperature of the side heat exchanger 3 becomes too low, it is closed and the refrigerant of the vapor compression refrigeration machine X flows into the heater g in the generator G of the absorption refrigeration machine Y, By operating the solution pump Pl of the absorption refrigerator Y, the air cooling heat exchanger 8 and the cooling fan 10 attached to the air cooling heat exchanger 8, the refrigerant of the vapor compression refrigerator X is an absorption refrigerator. Absorbs heat from the Y solution and dissolves in the absorption refrigerator Y Can become possible to heat absorption from the outside air in the air-cooled heat exchanger 8, smoothly perform the heating operation. Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Third Embodiment FIG. 3 shows a refrigeration cycle in a refrigeration apparatus according to a third embodiment of the present invention.

  In this case, an on-off valve 17 is provided in the middle of the pipe 16 leading to the solution heat exchanger Ha, and the generation from the solution pipe 18 leading from the outlet of the air-cooled heat exchanger 8 to the absorber A and the solution heat exchanger Ha. A dilute solution pipe 19 reaching the vessel G is connected by a solution pipe 21 having an on-off valve 20 interposed therebetween. In the cooling operation, the on-off valve 14 provided in the bypass circuit 13 that bypasses the generator G is connected to the generator G of the absorption refrigerator chiller Y whose inlet refrigerant temperature in the vapor compression refrigerator X is the absorption refrigerant refrigerator Y. When the solution temperature is exceeded, the closing operation is performed, the opening / closing valve 17 of the piping 16 leading to the solution heat exchanger Ha is opened, and the opening / closing valve 20 of the solution piping 21 is closed.

  On the other hand, during the heating operation, the four-way switching valve 2 is switched so that the refrigerant of the vapor compression refrigerator X flows in the opposite direction to that during the cooling operation, and the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is set. The open / close valve 20 of the solution pipe 21 is opened, and the open / close valve 14 of the bypass circuit 13 that bypasses the heater g of the generator G is connected to the heat source side heat exchanger 3 of the vapor compression refrigerator X. When the refrigerant outlet temperature becomes too low, the operation is closed.

  In this way, the opening / closing operation of the on-off valves 14, 17, 20 is attached to the solution pump Pl of the absorption refrigeration machine Y, the air-cooling heat exchanger 8, and the air-cooling heat exchanger 8 during heating operation. By operating the cooling fan 10, when the refrigerant outlet temperature of the refrigerant of the vapor compression refrigerator X becomes too low, the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigerator X is reduced. Heat is absorbed from the solution in the generator G, and the solution in the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air-conditioning operation (in other words, heat pump operation) in the vapor compression refrigeration machine X is possible. It becomes. Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Fourth Embodiment FIG. 4 shows a refrigeration cycle in a refrigeration apparatus according to a fourth embodiment of the present invention.

  In this case, an on-off valve 17 is provided in the middle of the pipe 16 leading to the solution heat exchanger Ha, a solution pipe 18 extending from the outlet of the air-cooled heat exchanger 8 to the absorber A, and a refrigerant pipe on the inlet side of the evaporator E. 22 is connected by a bypass pipe 24 having an on-off valve 23 interposed therebetween.

  During the cooling operation, the on-off valve 14 of the bypass circuit 13 that bypasses the heater g of the generator G is connected to the generator of the absorption refrigerator Y where the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X is When the G solution temperature is exceeded, the valve is closed, the open / close valve 23 of the bypass pipe 24 is closed, and the open / close valve 17 of the pipe 16 leading to the solution heat exchanger Ha is opened.

  On the other hand, during the heating operation, the four-way switching valve 2 is switched so that the refrigerant of the vapor compression refrigerator X flows in the opposite direction to that during the cooling operation, and the on-off valve 23 of the bypass pipe 24 is opened, and the solution The on-off valve 17 of the bypass circuit 13 that bypasses the heater g of the generator G is closed by operating the on-off valve 17 of the pipe 16 leading to the heat exchanger Ha, and the heat source side heat exchanger 3 of the vapor compression refrigerator X. When the refrigerant outlet temperature becomes too low, the operation is closed.

  In this way, the opening / closing operation of the on-off valves 14, 17, 23 is attached to the solution pump Pl of the absorption refrigeration machine Y, the air-cooling heat exchanger 8, and the air-cooling heat exchanger 8 during heating operation. By operating the cooling fan 10, when the refrigerant outlet temperature of the refrigerant of the vapor compression refrigerator X becomes too low, the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigerator X is reduced. Heat is absorbed from the solution in the generator G, and the solution in the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air-conditioning operation (in other words, heat pump operation) in the vapor compression refrigeration machine X is possible. It becomes. Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Fifth Embodiment FIG. 5 shows a refrigeration cycle in a refrigeration apparatus according to a fifth embodiment of the present invention.

  In this case, an on-off valve 17 is provided in the middle of the pipe 16 leading to the solution heat exchanger Ha, branching from the solution pipe 18 leading from the outlet of the air-cooled heat exchanger 8 to the absorber A to the inlet of the evaporator E. A bypass pipe 25 is provided, and an open / close valve 26 is provided in the bypass pipe 25.

  During the cooling operation, the on-off valve 14 of the bypass circuit 13 that bypasses the heater g of the generator G is connected to the generator of the absorption refrigerator Y where the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X is When the G solution temperature is exceeded, the valve is closed, the open / close valve 26 of the bypass pipe 25 is closed, and the open / close valve 17 of the pipe 16 leading to the solution heat exchanger Ha is opened.

  On the other hand, during the heating operation, the four-way switching valve 2 is switched so that the refrigerant of the vapor compression refrigerator X flows in the opposite direction to that during the cooling operation, and the on-off valve 26 of the bypass pipe 25 is opened, and the solution The on-off valve 17 of the bypass circuit 13 that bypasses the heater g of the generator G is closed by operating the on-off valve 17 of the pipe 16 leading to the heat exchanger Ha, and the heat source side heat exchanger 3 of the vapor compression refrigerator X. When the refrigerant outlet temperature becomes too low, the operation is closed.

  In this way, the opening / closing operation of the on-off valves 14, 17, 26 is attached to the solution pump Pl of the absorption refrigeration machine Y, the air-cooling heat exchanger 8, and the air-cooling heat exchanger 8 during heating operation. By operating the cooling fan 10, when the refrigerant outlet temperature of the refrigerant of the vapor compression refrigerator X becomes too low, the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigerator X is reduced. Heat is absorbed from the solution in the generator G, and the solution in the absorption refrigeration machine Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air-conditioning operation (in other words, heat pump operation) in the vapor compression refrigeration machine X is possible. It becomes.

  In this case, the spreader in the case where the solution is allowed to flow into the evaporator E may be provided with a spreader separately from the refrigerant, or can be shared. If it does in this way, a solution will be spread | dispersed on the heat-transfer surface of the evaporator E well. Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Sixth Embodiment FIG. 6 shows a refrigeration cycle in a refrigeration apparatus according to a sixth embodiment of the present invention.

  In this case, in the fourth embodiment, the bypass formed by connecting the solution pipe 18 extending from the outlet of the air-cooled heat exchanger 8 to the absorber A and the refrigerant pipe 22 on the inlet side of the evaporator E via the open / close valve 23. In addition to being connected by a pipe 24, an opening / closing valve 27 is provided in the solution pipe 18 on the inlet side of the absorber A, and during the cooling operation, the opening / closing valve 23 of the bypass pipe 24 is closed and the opening / closing valve of the solution pipe 18 is closed. 27 is opened, the on-off valve 20 of the solution pipe 21 is closed, and the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is opened to bypass the heater g of the generator G The on-off valve 14 of the circuit 13 is closed when the inlet refrigerant temperature of the bypass circuit 13 in the vapor compression refrigerator X exceeds the solution temperature of the generator G of the absorption refrigerator Y, but during the heating operation, the vapor compression Freezing The four-way switching valve 2 is switched so that the refrigerant of X flows in the opposite direction to that during the cooling operation, the on-off valve 23 of the bypass pipe 24 is opened, and the on-off valve 27 of the solution pipe 18 is closed. The on-off valve 20 of the bypass circuit 13 that opens the on-off valve 20 of the solution pipe 21 and closes the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha and bypasses the heater g of the generator G is provided. When the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigeration machine X becomes too low, the operation is closed. In this way, the opening / closing operation of the on-off valves 14, 17, 20, 23, 27 causes the solution pump Pl of the absorption refrigeration machine Y, the air-cooled heat exchanger 8, and the air-cooled heat exchanger 8 during heating operation. By operating the cooling fan 10 attached to the refrigerant, the refrigerant of the vapor compression refrigeration machine X absorbs the refrigerant when the refrigerant outlet temperature of the heat source side heat exchanger 3 of the vapor compression refrigeration machine X becomes too low. Heat is absorbed from the solution in the generator G of the refrigerator Y, and the solution in the absorption refrigerator Y absorbs heat from the outside air in the air-cooling heat exchanger 8, so that air-conditioning operation (in other words, heat pump) in the vapor compression refrigerator X Operation). Other configurations and operational effects are the same as those in the fourth embodiment, and thus description thereof is omitted.

Seventh Embodiment FIG. 7 shows a refrigeration cycle in a refrigeration apparatus according to a seventh embodiment of the present invention.

  In this case, two vapor compression refrigerators X and X ′ and one absorption refrigerator Y are combined. That is, two vapor compression refrigerators X and X ′ are connected in parallel to one absorption refrigerator Y, and the refrigerant discharged from the vapor compression refrigerators X and X ′ during the cooling operation is an absorption type. It is configured to be supplied to the heater g of the generator G in the refrigerator Y. Further, on-off valves 14 and 14 'are provided in bypass circuits 13 and 13' for bypassing the heater g of the generator G in the absorption refrigerator Y, respectively. In the absorption refrigerator Y, an on-off valve 17 is provided in the middle of the pipe 16 leading to the solution heat exchanger Ha, and the solution pipe 18 and the evaporator extending from the outlet of the air-cooled heat exchanger 8 to the absorber A The refrigerant pipe 22 on the inlet side of E is connected by a bypass pipe 24 having an on-off valve 23 interposed therebetween, and an on-off valve 26 is provided on the solution pipe 18 on the inlet side of the absorber A.

  During the cooling operation, the on-off valve 23 of the bypass pipe 24 is closed and the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is opened, and the solution pipe 18 on the inlet side of the absorber A is opened. The on-off valve 27 is opened and the on-off valves 14 and 14 'of the bypass circuits 13 and 13' for bypassing the heater g of the generator G are connected to the bypass circuits 13 and 13 in the vapor compression refrigerators X and X '. When the inlet refrigerant temperature of 'exceeds the solution temperature of the generator G of the absorption refrigerator Y, the closing operation is performed.

  On the other hand, during heating operation, the on-off valve 23 of the bypass pipe 24 is opened, the on-off valve 17 of the pipe 16 leading to the solution heat exchanger Ha is closed, and the solution pipe 18 on the inlet side of the absorber A is closed. The on-off valve 27 is closed and the on-off valves 14 and 14 'of the bypass circuits 13 and 13' bypassing the heater g of the generator G are connected to the heat source side heat exchangers of the vapor compression refrigerators X and X '. When the refrigerant outlet temperatures 3 and 3 become too low, the operation is closed. In the case of illustration, the four-way switching valve in the added vapor compression refrigerator X ′ is not shown.

  If it carries out as mentioned above, one absorption refrigerator Y can be driven using the exhaust heat of two vapor compression refrigerators X and X 'effectively, and cold heat conversion by absorption refrigerator Y is carried out. Thus, the performance of the vapor compression refrigerator X can be greatly improved. In addition, the cooling and heating operation (in other words, the heat pump operation) in the vapor compression refrigerator X can be performed, and the utilization range of the refrigeration apparatus can be greatly expanded.

  In the first to seventh embodiments as well, the exhaust heat of the refrigerants of a plurality of vapor compression refrigerators is recovered, and the refrigerant vapor is generated by the generator of one absorption refrigerator and driven. It can also be configured as follows. If it does in this way, one absorption type refrigerator can be driven using the exhaust heat of a plurality of vapor compression refrigerators effectively.

  Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Eighth Embodiment FIG. 8 shows a refrigeration cycle in a refrigeration apparatus according to an eighth embodiment of the present invention.

  In this case, the generator G in the absorption refrigeration machine Y shown in the seventh embodiment is a heater g to which refrigerants of a plurality of vapor compression refrigeration machines X are supplied. In addition, in the eighth embodiment, a heater g ′ to which exhaust heat (for example, solar heat) is supplied is additionally provided. If it does in this way, another exhaust heat warm water can be used effectively, and the use range of refrigeration equipment can be expanded greatly, such as when solar heat is used as exhaust heat. Other configurations and operational effects are the same as those in the sixth embodiment, and thus description thereof is omitted.

  By the way, in each of the above-described embodiments, the liquid refrigerant is temporarily moved through the heat transfer surface of the evaporator E so that the non-evaporated refrigerant moves to the absorber A side and is absorbed by the absorbing solution. It can also be configured. In this case, the liquid refrigerant from the condenser C flows down the heat transfer surface of the evaporator E, but the unevaporated refrigerant moves to the absorber A and is then absorbed by the absorbing solution. The structure of E and the absorber A can be simplified.

  The invention of the present application is not limited to the above-described embodiments, and it goes without saying that the design can be changed as appropriate without departing from the scope of the invention.

2 is a four-way switching valve 3 is a heat source side heat exchanger 6 is a cooling fan 8 is an air-cooling heat exchanger 13 is a bypass circuit 14 is an on-off valve 16 is a pipe 17 is an on-off valve 18 is a solution pipe 19 is a dilute solution pipe 20 is open and close Valve 21 is solution pipe 22 is refrigerant pipe 23 is on-off valve 24, 25 is bypass pipe 26, 27 is on-off valve A is absorber C is condenser E is evaporator G is generator e is heat exchanger g is heater Pl is a solution pump X is a vapor compression refrigerator Y is an absorption refrigerator

Claims (10)

A refrigeration apparatus combining a vapor compression refrigeration machine (X) and an absorption refrigeration machine (Y), wherein the refrigerant of the vapor compression refrigeration machine (X) during cooling operation is used as the absorption refrigeration machine (Y). The refrigerant cooling method of cooling or supercooling with the evaporator (E) of the above is adopted, and the amount of heat when radiating the refrigerant of the vapor compression refrigerator (X) during the cooling operation is expressed as the absorption refrigerator (Y) the order to use as a heat source, but flowing the refrigerant after compression in said vapor compression refrigerating machine (X) to said heater generator absorption refrigerator (Y) (G) (g ), part load When the refrigerant temperature of the compressor (1) in the vapor compression refrigerator (X) is low, the refrigerant of the vapor compression refrigerator (X) is generated by the generator (G) of the absorption refrigerator (Y). ) Is bypassed and opened to the bypass circuit (13). When the valve (14) is attached and the refrigerant temperature at the inlet of the bypass circuit (13) exceeds the solution temperature of the generator (G), the on-off valve (14) is closed and the generator (G) The refrigerant of the vapor compression refrigeration machine (X) after heat exchange with the absorption solution or the refrigerant of the vapor compression refrigeration machine (X) from the bypass circuit (13) is used as the absorption refrigeration machine (Y). Refrigerant flow direction so that the refrigerant flows through the vapor compression refrigerator (X) in the opposite direction to the cooling operation during the heating operation. A four-way switching valve (2) for switching the heat source side heat exchanger (3) is configured to function during heating operation, while the on-off valve (14) of the bypass circuit (13) is connected to the steam Heat source side heat exchanger of compression refrigerator (X) ( ) When the refrigerant outlet temperature becomes too low, the refrigerant of the vapor compression refrigerator (X) is transferred to the absorption refrigerator (G) by the heater (g) in the generator (G). Y) by operating the solution pump (Pl), the air-cooled heat exchanger (8), and the cooling fan (10) provided in the air-cooled heat exchanger (8), the generator (G) The heat is absorbed from the solution, and the solution is configured to absorb heat from the outside air in the air-cooled heat exchanger (8), and from the outlet of the absorber (A) to the generator (G) via the solution pump (Pl). A solution heat exchanger (Ha) for exchanging heat between the dilute solution to be sent and the concentrated solution from the generator (G) is attached, and an open / close valve is provided in the middle of the pipe (16) leading to the solution heat exchanger (Ha). (17) and an outlet of the air-cooled heat exchanger (8) for supercooling the absorbing solution A solution pipe (18) connected to the absorber (A) and a dilute solution pipe (19) from the solution heat exchanger (Ha) to the generator (G) through an on-off valve (20). In the cooling operation, the on-off valve (17) of the pipe (16) leading to the solution heat exchanger (Ha) is opened and the on-off valve (20) of the solution pipe (21) is closed during the cooling operation. The on-off valve (14) of the bypass circuit (13), which is operated and bypasses the heater (g) of the generator (G), the inlet refrigerant temperature of the bypass circuit (13) is the solution temperature of the generator (G) However, during heating operation, the on-off valve (17) of the pipe (16) leading to the solution heat exchanger (Ha) is closed and the on-off valve (20) of the solution pipe (21) is closed. Bypass opening and bypassing the heater (g) of the generator (G) The on-off valve (14) of the passage (13) is closed when the refrigerant outlet temperature of the heat source side heat exchanger (3) of the vapor compression refrigerator (X) becomes too low, and the vapor compression refrigerator The refrigerant (X) is heated by the heater (g) in the generator (G), the solution pump (Pl) of the absorption refrigeration machine (Y), the air cooling heat exchanger (8), and the air cooling heat exchange. By operating the cooling fan (10) attached to the generator (8), heat is absorbed from the solution in the generator (G), and the solution absorbs heat from the outside air in the air-cooled heat exchanger (8). refrigerating apparatus characterized by being configured to. A refrigeration apparatus combining a vapor compression refrigeration machine (X) and an absorption refrigeration machine (Y), wherein the refrigerant of the vapor compression refrigeration machine (X) during cooling operation is used as the absorption refrigeration machine (Y). The refrigerant cooling method of cooling or supercooling with the evaporator (E) of the above is adopted, and the amount of heat when radiating the refrigerant of the vapor compression refrigerator (X) during the cooling operation is expressed as the absorption refrigerator (Y) The refrigerant after compression in the vapor compression refrigerator (X) is allowed to flow into the heater (g) of the generator (G) of the absorption refrigerator (Y) to be used as a heating source for When the refrigerant temperature of the compressor (1) in the vapor compression refrigerator (X) is low, the refrigerant of the vapor compression refrigerator (X) is generated by the generator (G) of the absorption refrigerator (Y). ) Is bypassed and opened to the bypass circuit (13). When the valve (14) is attached and the refrigerant temperature at the inlet of the bypass circuit (13) exceeds the solution temperature of the generator (G), the on-off valve (14) is closed and the generator (G) The refrigerant of the vapor compression refrigeration machine (X) after heat exchange with the absorption solution or the refrigerant of the vapor compression refrigeration machine (X) from the bypass circuit (13) is used as the absorption refrigeration machine (Y). Refrigerant flow direction so that the refrigerant flows through the vapor compression refrigerator (X) in the opposite direction to the cooling operation during the heating operation. A four-way switching valve (2) for switching the heat source side heat exchanger (3) is configured to function during heating operation, while the on-off valve (14) of the bypass circuit (13) is connected to the steam Heat source side heat exchanger of compression refrigerator (X) ( ) When the refrigerant outlet temperature becomes too low, the refrigerant of the vapor compression refrigerator (X) is transferred to the absorption refrigerator (G) by the heater (g) in the generator (G). Y) by operating the solution pump (Pl), the air-cooled heat exchanger (8), and the cooling fan (10) provided in the air-cooled heat exchanger (8), the generator (G) The heat is absorbed from the solution, and the solution is configured to absorb heat from the outside air in the air-cooled heat exchanger (8), and from the outlet of the absorber (A) to the generator (G) via the solution pump (Pl). A solution heat exchanger (Ha) for exchanging heat between the dilute solution to be sent and the concentrated solution from the generator (G) is attached, and an open / close valve is provided in the middle of the pipe (16) leading to the solution heat exchanger (Ha). (17) and an outlet of the air-cooled heat exchanger (8) for supercooling the absorbing solution The solution pipe (18) leading to the absorber (A) and the refrigerant pipe (22) on the inlet side of the evaporator (E) are connected by a bypass pipe (24) having an on-off valve (23). During the cooling operation, the open / close valve (23) of the bypass pipe (24) is closed and the open / close valve (17) of the pipe (16) leading to the solution heat exchanger (Ha) is opened. The on-off valve (14) of the bypass circuit (13) bypassing the heater (g) of (G) is closed when the inlet refrigerant temperature of the bypass circuit (13) exceeds the solution temperature of the generator (G). However, during the heating operation, the on-off valve (23) of the bypass pipe (24) is opened to open the on-off valve (14) of the bypass circuit (13) that bypasses the heater (g) of the generator (G). The refrigerant of the vapor compression refrigerator (X) is in the generator (G). In the heater (g), a solution pump (Pl) of the absorption refrigeration machine (Y), the air cooling heat exchanger (8), and a cooling fan (10) provided in the air cooling heat exchanger (8) by operating the said absorbs heat from the solution in the generator (G), the solution is freeze cold you characterized by being configured to heat absorption from the outside air by the air-cooled heat exchanger (8) devices. A refrigeration apparatus combining a vapor compression refrigeration machine (X) and an absorption refrigeration machine (Y), wherein the refrigerant of the vapor compression refrigeration machine (X) during cooling operation is used as the absorption refrigeration machine (Y). The refrigerant cooling method of cooling or supercooling with the evaporator (E) of the above is adopted, and the amount of heat when radiating the refrigerant of the vapor compression refrigerator (X) during the cooling operation is expressed as the absorption refrigerator (Y) The refrigerant after compression in the vapor compression refrigerator (X) is allowed to flow into the heater (g) of the generator (G) of the absorption refrigerator (Y) to be used as a heating source for When the refrigerant temperature of the compressor (1) in the vapor compression refrigerator (X) is low, the refrigerant of the vapor compression refrigerator (X) is generated by the generator (G) of the absorption refrigerator (Y). ) Is bypassed and opened to the bypass circuit (13). When the valve (14) is attached and the refrigerant temperature at the inlet of the bypass circuit (13) exceeds the solution temperature of the generator (G), the on-off valve (14) is closed and the generator (G) The refrigerant of the vapor compression refrigeration machine (X) after heat exchange with the absorption solution or the refrigerant of the vapor compression refrigeration machine (X) from the bypass circuit (13) is used as the absorption refrigeration machine (Y). Refrigerant flow direction so that the refrigerant flows through the vapor compression refrigerator (X) in the opposite direction to the cooling operation during the heating operation. A four-way switching valve (2) for switching the heat source side heat exchanger (3) is configured to function during heating operation, while the on-off valve (14) of the bypass circuit (13) is connected to the steam Heat source side heat exchanger of compression refrigerator (X) ( ) When the refrigerant outlet temperature becomes too low, the refrigerant of the vapor compression refrigerator (X) is transferred to the absorption refrigerator (G) by the heater (g) in the generator (G). Y) by operating the solution pump (Pl), the air-cooled heat exchanger (8), and the cooling fan (10) provided in the air-cooled heat exchanger (8), the generator (G) The heat is absorbed from the solution, and the solution is configured to absorb heat from the outside air in the air-cooled heat exchanger (8), and from the outlet of the absorber (A) to the generator (G) via the solution pump (Pl). A solution heat exchanger (Ha) for exchanging heat between the dilute solution to be sent and the concentrated solution from the generator (G) is attached, and an open / close valve is provided in the middle of the pipe (16) leading to the solution heat exchanger (Ha). (17) and an outlet of the air-cooled heat exchanger (8) for supercooling the absorbing solution A bypass pipe (25) branched from the solution pipe (18) leading to the absorber (A) to the inlet of the evaporator (E) is provided, and an open / close valve (26) is provided in the bypass pipe (25). During the cooling operation, the on-off valve (26) of the bypass pipe (25) is closed and the on-off valve (17) of the pipe (16) leading to the solution heat exchanger (Ha) is opened, The on-off valve (14) of the bypass circuit (13) bypassing the heater (g) of the generator (G) is closed when the inlet refrigerant temperature of the bypass circuit (13) exceeds the solution temperature of the generator (G). However, during heating operation, the on-off valve (26) of the bypass pipe (25) is opened, the on-off valve (17) of the pipe (16) leading to the solution heat exchanger (Ha) is closed, Viper bypassing heater (g) of generator (G) The on-off valve (14) of the circuit (13) is closed when the refrigerant outlet temperature of the heat source side heat exchanger (3) of the vapor compression refrigerator (X) becomes too low, and the vapor compression refrigerator The refrigerant (X) is heated by the heater (g) in the generator (G), the solution pump (Pl) of the absorption refrigeration machine (Y), the air cooling heat exchanger (8), and the air cooling heat exchange. By operating the cooling fan (10) attached to the generator (8), heat is absorbed from the solution in the generator (G), and the solution absorbs heat from the outside air in the air-cooled heat exchanger (8). refrigerating device characterized by being configured to. A refrigeration apparatus combining a vapor compression refrigeration machine (X) and an absorption refrigeration machine (Y), wherein the refrigerant of the vapor compression refrigeration machine (X) during cooling operation is used as the absorption refrigeration machine (Y). The refrigerant cooling method of cooling or supercooling with the evaporator (E) of the above is adopted, and the amount of heat when radiating the refrigerant of the vapor compression refrigerator (X) during the cooling operation is expressed as the absorption refrigerator (Y) The refrigerant after compression in the vapor compression refrigerator (X) is allowed to flow into the heater (g) of the generator (G) of the absorption refrigerator (Y) to be used as a heating source for When the refrigerant temperature of the compressor (1) in the vapor compression refrigerator (X) is low, the refrigerant of the vapor compression refrigerator (X) is generated by the generator (G) of the absorption refrigerator (Y). ) Is bypassed and opened to the bypass circuit (13). When the valve (14) is attached and the refrigerant temperature at the inlet of the bypass circuit (13) exceeds the solution temperature of the generator (G), the on-off valve (14) is closed and the generator (G) The refrigerant of the vapor compression refrigeration machine (X) after heat exchange with the absorption solution or the refrigerant of the vapor compression refrigeration machine (X) from the bypass circuit (13) is used as the absorption refrigeration machine (Y). Refrigerant flow direction so that the refrigerant flows through the vapor compression refrigerator (X) in the opposite direction to the cooling operation during the heating operation. A four-way switching valve (2) for switching the heat source side heat exchanger (3) is configured to function during heating operation, while the on-off valve (14) of the bypass circuit (13) is connected to the steam Heat source side heat exchanger of compression refrigerator (X) ( ) When the refrigerant outlet temperature becomes too low, the refrigerant of the vapor compression refrigerator (X) is transferred to the absorption refrigerator (G) by the heater (g) in the generator (G). Y) by operating the solution pump (Pl), the air-cooled heat exchanger (8), and the cooling fan (10) provided in the air-cooled heat exchanger (8), the generator (G) The absorber (A) absorbs heat from the solution, and the solution absorbs heat from the outside air in the air-cooled heat exchanger (8) and supercools the absorbing solution from the outlet of the air-cooled heat exchanger (8). The solution pipe (18) leading to the evaporator (E) and the refrigerant pipe (22) on the inlet side of the evaporator (E) are connected by a bypass pipe (24) having an on-off valve (23), and the absorber ( A) An on-off valve (27) is installed in the solution pipe (18) on the inlet side of the inlet side. The on-off valve (23) of the bypass pipe (24) is closed and the on-off valve (27) of the solution pipe (18) is opened, and the on-off valve (20) of the solution pipe (21) is closed. And an open / close valve (13) of the bypass circuit (13) that opens the open / close valve (17) of the pipe (16) leading to the solution heat exchanger (Ha) and bypasses the heater (g) of the generator (G) ( 14) is closed when the inlet refrigerant temperature of the bypass circuit (13) exceeds the solution temperature of the generator (G), but during heating operation, the on-off valve (23) of the bypass pipe (24) is opened. And the opening and closing valve (27) of the solution pipe (18) is closed and the opening and closing valve (20) of the solution pipe (21) is opened and the pipe (16) reaching the solution heat exchanger (Ha). The on-off valve (17) of the generator is closed and the generator (G) The on-off valve (14) of the bypass circuit (13) that bypasses the heater (g) is opened, and the refrigerant of the vapor compression refrigerator (X) is transferred to the heater (g) in the generator (G). By operating the solution pump (Pl) of the absorption refrigeration machine (Y), the air-cooled heat exchanger (8), and the cooling fan (10) provided in the air-cooled heat exchanger (8), wherein absorbs heat from the solution in the generator (G), the solution is freeze cold you characterized by being configured to heat absorption from the outside air by the air-cooled heat exchanger (8) devices. The absorption solution entering the absorber (A) in the absorption refrigerator (Y) is supercooled by an air-cooled heat exchanger (8), and the absorber (A) simply absorbs the refrigerant vapor to absorb heat. The refrigeration apparatus according to any one of claims 1 , 2, 3, and 4 , wherein an indirect air cooling system in which the absorption solution is removed. The refrigerating apparatus according to claim 4, wherein a spreader when the solution is allowed to flow into the evaporator (E) is attached or shared with a spreader separately from the refrigerant. The evaporator (E) is configured such that the liquid refrigerant is transient and flows through the heat transfer surface, and the non-evaporated refrigerant moves to the absorber (A) side and is absorbed by the absorbing solution. to claim 1, 2, 3, 4, 5 Contact and 6 refrigeration apparatus according to any one claim of. A plurality of the vapor compression refrigeration units (X) are configured to recover the exhaust heat of each of the refrigerants, and to generate and drive the refrigerant vapor with the generator G of one absorption refrigeration unit Y. claim 1, 2, 3, 4, characterized in, 6 Contact and 7 refrigeration apparatus according to any one claim of. The generator according to claim 1, 2, 3, 4, characterized in that using the waste heat as a heat source (G), 7 Contact and refrigeration apparatus according to any one claim of 8. The refrigeration apparatus according to claim 9, wherein solar heat is used as the exhaust heat.

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