# US 9,435,573 B2 · Adsorption heat pump

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- Number: US 9,435,573 B2
- Document ID: US9435573B2
- Status: Granted
- Kind: B2
- Application number: 14/218,616
- Filed: 2014-03-18
- Published: 2014-09-25
- Granted: 2016-09-06
- Earliest claimed: 2013-03-21
- Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho
- Applicants: Kabushiki Kaisha Toyota Chuo Kenkyusho
- Inventors: Yasuki Hirota; Takafumi Yamauchi; Ryuichi Iwata; Takashi Shimazu
- Web page: https://patentgrep.com/patent/US9435573B2

## CPC

- F25B 30/04: of the sorption type
- F25B 17/083: {with two or more boiler-sorbers operating alternately}
- F24D 2200/126: Absorption type heat pumps
- Y02A 30/27: Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02B 30/00: Energy efficient heating, ventilation or air conditioning [HVAC]
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F24D: DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR (using steam or condensate extracted or exhausted from steam engine plants for heating purposes F01K17/02)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

An adsorption heat pump includes: a first evaporator that evaporates a first fluid; a condenser that condenses the first fluid; a heater; and a rotary adsorption device. The rotary adsorption device includes: partitioning portions that radially partition a space encircling the rotation axis into plural regions, that each include a flow path for internally retaining and discharging a second fluid, and that each include an adsorbent on an outer surface thereof or on a wall surface of the flow path; and a pair of closure portions that close off both ends, in the direction of the rotation axis, of the plural regions. Each of the partitioning portions is moved alternately between the first evaporator side and the condenser side by rotation around the rotation axis. In the partitioning portions, retention and discharge of the first fluid, and discharge and retention of the second fluid, are repeated.

## Claims

### Claim 1

An adsorption heat pump comprising:
a first evaporator that evaporates a first fluid;
a condenser that condenses the first fluid;
a heater; and
a rotary adsorption device that is provided so as to be rotatable around a rotation axis, the rotary adsorption device including:
a plurality of partitioning portions that radially partition a space encircling the rotation axis into a plurality of regions, that each include a flow path for internally retaining a second fluid supplied from one end of the flow path in a direction parallel to a direction of the rotation axis and discharging the second fluid from the other end of the flow path, and that each include an adsorbent on an outer surface thereof or on a wall surface of the flow path, and
at least one pair of closure portions that close off both ends, in the direction of the rotation axis, of the plurality of regions, but do not close off both ends of the flow path,
each of the plurality of partitioning portions being moved alternately between a first evaporator side and a condenser side by rotation of the rotary adsorption device around the rotation axis,
the plurality of the partitioning portions including at least one first partitioning portion positioned at the first evaporator side and at least one second partitioning portion positioned at the condenser side,
the first fluid supplied from the first evaporator being retained on an outer surface of the first partitioning portion, and the second fluid being discharged from the flow path of the first partitioning portion,
the second fluid being retained in the flow path of the second partitioning portion, and the first fluid being discharged from an outer surface of the second partitioning portion and supplied to the condenser, and
the heater heating the second fluid, and supplying the heated second fluid to the flow path of the second partitioning portion.

### Claim 2 (depends on 1)

The adsorption heat pump of claim 1, wherein:
the plurality of partitioning portions include an adsorbent that performs adsorption and desorption of the first fluid at the outer surfaces of the partitioning portions;
the first fluid supplied from the first evaporator is adsorbed and retained by the adsorbent disposed at the outer surface of the first partitioning portion, and the second fluid is evaporated inside the flow path of the first partitioning portion and discharged from the flow path of the first partitioning portion; and
the second fluid supplied from the heater is condensed in the flow path of the second partitioning portion and retained on the wall surface of the flow path of the second partitioning portion, and the first fluid is desorbed and discharged from the adsorbent disposed at the outer surface of the second partitioning portion.

### Claim 3 (depends on 1)

The adsorption heat pump of claim 1, wherein the first fluid and the second fluid are the same substance.

### Claim 4 (depends on 1)

The adsorption heat pump of claim 1, wherein the condenser condenses the second fluid discharged from the flow path.

### Claim 5 (depends on 1)

The adsorption heat pump of claim 1, further comprising a housing body that houses the rotary adsorption device, the first evaporator, and the condenser.

### Claim 6 (depends on 1)

The adsorption heat pump of claim 1, wherein the heater is a second evaporator that evaporates the second fluid and supplies the second fluid in a gaseous state into the flow path.

### Claim 7 (depends on 1)

The adsorption heat pump of claim 1, further comprising a blocking portion that blocks the other end side of the flow path of the second partitioning portion.

### Claim 8 (depends on 1)

The adsorption heat pump of claim 1, wherein each of the first fluid and the second fluid is water, ammonia, or a mixture of water and ammonia.

### Claim 9 (depends on 1)

The adsorption heat pump of claim 1, wherein the adsorbent is at least one selected from the group consisting of activated carbon, mesoporous silica, zeolite, silica gel, and a clay mineral.