Dehumidifier for a compressor, 1-stage compressing-absorbing type heat pump system and 2-stage compressing-absorbing type heat pump system

A 1-stage compressing-absorbing type heat pump system, comprising:

• an expansion device that expands a high-temperature and high-pressure refrigerant-absorbent mixture and changes the high-temperature and high-pressure refrigerant-absorbent mixture into a low-temperature and low-pressure refrigerant-absorbent mixture;
• a desorber that receives the low-temperature and low-pressure refrigerant-absorbent mixture from the expansion device and evaporates a part of a refrigerant from the refrigerant-absorbent mixture;
• a compressor that compresses the refrigerant evaporated by the desorber;
• a pump that pressurizes the refrigerant-absorbent mixture in a state of a dilute and concentrated solution that remains in a state where a part of the refrigerant is evaporated by the desorber, by using a high-pressure solution;
• an absorber that absorbs a high-temperature and high-pressure refrigerant ejected from the compressor in a high-pressure refrigerant-absorbent mixture ejected from the pump;
• and
• a dehumidifier that absorbs a liquid-state absorbent contained in a low-temperature refrigerant flowing into the compressor and then regenerates the liquid-state absorbent by using the high-temperature and high-pressure refrigerant ejected from the compressor so as to enable the liquid-state absorbent to flow together with the high-temperature and high-pressure refrigerant,
• wherein the dehumidifier comprises:
• first and second dehumidifying members that absorb moisture;
• a first flow passage controlling valve comprising a first inlet through which a low-temperature vapor refrigerant ejected from the desorber flows, a second inlet through which a high-temperature and high-pressure vapor refrigerant ejected from the compressor flows, a first communication pipe that communicates with the first dehumidifying member, and a second communication pipe that communicates with the second dehumidifying member and activating a first operating mode in which the low-temperature refrigerant ejected from the first inlet is discharged to the second dehumidifying member, moisture contained in the low-temperature refrigerant is absorbed and simultaneously the high-temperature refrigerant ejected from the second inlet is discharged to the first dehumidifying member so that the first dehumidifying member is regenerated, and a second operating mode in which the low-temperature refrigerant ejected from the first inlet is discharged to the first dehumidifying member, moisture contained in the low-temperature refrigerant is absorbed and simultaneously the high-temperature refrigerant ejected from the second inlet is discharged to the second dehumidifying member so that the second dehumidifying member is regenerated;
• and
• a second flow passage controlling valve comprising a first outlet that communicates with an inlet of the compressor, a second outlet that communicates with an external device, a third communication pipe that communicates with the first dehumidifying member, and a fourth communication pipe that communicates with the second dehumidifying member, enabling, in the first operating mode, the refrigerant dehumidified by the second dehumidifying member to be discharged to the compressor via the first outlet and the refrigerant used in regenerating the first dehumidifying member to be discharged to the external device via the second outlet, and enabling, in the second operating mode, the refrigerant dehumidified by the first dehumidifying member to be discharged to the compressor via the first outlet and the refrigerant used in regenerating the second dehumidifying member to be discharged to the external device via the second outlet.

A 2-stage compressing-absorbing type heat pump system, comprising:

• an expansion device that expands a high-temperature and high-pressure refrigerant-absorbent mixture and changes the high-temperature and high-pressure refrigerant-absorbent mixture into a low-temperature and low-pressure refrigerant-absorbent mixture;
• a desorber that receives the low-temperature and low-pressure refrigerant-absorbent mixture from the expansion device and evaporates a part of a refrigerant from the refrigerant-absorbent mixture;
• a low-pressure compressor that compresses the refrigerant evaporated by the desorber;
• a pump that pressurizes the refrigerant-absorbent mixture in a state of a dilute and concentrated solution that remains in a state where a part of the refrigerant is evaporated by the desorber, by using a high-pressure solution;
• an intermediate cooler that mixes an intermediate pressure refrigerant ejected from the low-pressure compressor with the low-temperature refrigerant-absorbent mixture ejected from the pump and diverges and cools a part of the low-temperature refrigerant-absorbent mixture;
• a high-temperature compressor that compresses a vapor refrigerant in the intermediate cooler;
• an absorber that absorbs a high-temperature and high-pressure refrigerant ejected from the high-pressure compressor in a high-pressure refrigerant-absorbent mixture ejected from the pump;
• and
• a dehumidifier that absorbs a liquid-state absorbent contained a low-temperature refrigerant flowing into the low-pressure compressor and then regenerates the liquid-state absorbent by using the intermediate pressure refrigerant ejected from the low-temperature compressor so as to enable the liquid-state absorbent to flow together with the intermediate pressure refrigerant, wherein the dehumidifier comprises:
• first and second dehumidifying members that absorb moisture;
• a first flow passage controlling valve comprising a first inlet through which a low-temperature vapor refrigerant ejected from the desorber flows, a second inlet through which an intermediate pressure vapor refrigerant ejected from the low-temperature compressor flows, a first communication pipe that communicates with the first dehumidifying member, and a second communication pipe that communicates with the second dehumidifying member and activating a first operating mode in which the low-temperature refrigerant ejected from the first inlet is discharged to the second dehumidifying member, moisture contained in the low-temperature refrigerant is absorbed and simultaneously the high-temperature refrigerant ejected from the second inlet is discharged to the first dehumidifying member so that the first dehumidifying member is regenerated, and a second operating mode in which the low-temperature refrigerant ejected from the first inlet is discharged to the first dehumidifying member, moisture contained in the low-temperature refrigerant is absorbed and simultaneously the high-temperature refrigerant ejected from the second inlet is discharged to the second dehumidifying member so that the second dehumidifying member is regenerated;
• and
• a second flow passage controlling valve comprising a first outlet that communicates with an inlet of the low-pressure compressor, a second outlet that communicates with the intermediate cooler, a third communication pipe that communicates with the first dehumidifying member, and a fourth communication pipe that communicates with the second dehumidifying member, enabling, in the first operating mode, the refrigerant dehumidified by the second dehumidifying member to be discharged to the low-pressure compressor via the first outlet and the refrigerant used in regenerating the first dehumidifying member to be discharged to the intermediate cooler via the second outlet, and enabling, in the second operating mode, the refrigerant dehumidified by the first dehumidifying member to be discharged to the low-pressure compressor via the first outlet and the refrigerant used in regenerating the second dehumidifying member to be discharged to the intermediate cooler via the second outlet.

A 2-stage compressing-absorbing type heat pump system, comprising:

• an expansion device that expands a high-temperature and high-pressure refrigerant-absorbent mixture and changes the high-temperature and high-pressure refrigerant-absorbent mixture into a low-temperature and low-pressure refrigerant-absorbent mixture;
• a desorber that receives the low-temperature and low-pressure refrigerant-absorbent mixture from the expansion device and evaporates a part of a refrigerant from the refrigerant-absorbent mixture;
• a low-pressure compressor that compresses the refrigerant evaporated by the desorber;
• a pump that pressurizes the refrigerant-absorbent mixture in a state of a dilute and concentrated solution that remains in a state where a part of the refrigerant is evaporated by the desorber, by using a high-pressure solution;
• an intermediate cooler that mixes an intermediate pressure refrigerant ejected from the low-pressure compressor with the low-temperature refrigerant-absorbent mixture ejected from the pump and diverges and cools a part of the low-temperature refrigerant-absorbent mixture;
• a high-temperature compressor that compresses a vapor refrigerant in the intermediate cooler;
• an absorber that absorbs a high-temperature and high-pressure refrigerant ejected from the high-pressure compressor in a high-pressure refrigerant-absorbent mixture ejected from the pump;
• and
• a dehumidifier that absorbs a liquid-state absorbent contained in a low-temperature refrigerant flowing into the low-pressure compressor and then regenerates the liquid-state absorbent by using the high-pressure refrigerant ejected from the high-temperature compressor so as to enable the liquid-state absorbent to flow together with the high-pressure refrigerant,
• wherein the dehumidifier comprises:
• first and second dehumidifying members that absorb moisture;
• a first flow passage controlling valve comprising a first inlet through which a low-temperature vapor refrigerant ejected from the desorber flows, a second inlet through which a high-temperature and high-pressure vapor refrigerant ejected from the high-temperature compressor flows, a first communication pipe that communicates with the first dehumidifying member, and a second communication pipe that communicates with the second dehumidifying member and activating a first operating mode in which the low-temperature refrigerant ejected from the first inlet is discharged to the second dehumidifying member, moisture contained in the low-temperature refrigerant is absorbed and simultaneously the high-temperature refrigerant ejected from the second inlet is discharged to the first dehumidifying member so that the first dehumidifying member is regenerated, and a second operating mode in which the low-temperature refrigerant ejected from the first inlet is discharged to the first dehumidifying member, moisture contained in the low-temperature refrigerant is absorbed and simultaneously the high-temperature refrigerant ejected from the second inlet is discharged to the second dehumidifying member so that the second dehumidifying member is regenerated;
• and
• a second flow passage controlling valve comprising a first outlet that communicates with an inlet of the high-pressure compressor, a second outlet that communicates with the absorber, a third communication pipe that communicates with the first dehumidifying member, and a fourth communication pipe that communicates with the second dehumidifying member, enabling, in the first operating mode, the refrigerant dehumidified by the second dehumidifying member to be discharged to the low-pressure compressor via the first outlet and the refrigerant used in regenerating the first dehumidifying member to be discharged to the absorber via the second outlet, and enabling, in the second operating mode, the refrigerant dehumidified by the first dehumidifying member to be discharged to the low-pressure compressor via the first outlet and the refrigerant used in regenerating the second dehumidifying member to be discharged to the absorber via the second outlet.