# US 9,752,805 B2 · Adsorption heat pump

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,752,805 B2
- Document ID: US9752805B2
- Status: Granted
- Kind: B2
- Application number: 13/755,455
- Filed: 2013-01-31
- Published: 2013-06-06
- Granted: 2017-09-05
- Earliest claimed: 2010-08-05
- Assignees: Fujitsu Limited
- Applicants: Fujitsu Limited
- Inventors: Noriyasu Aso; Toshio Manabe
- Web page: https://patentgrep.com/patent/US9752805B2

## CPC

- F25B 30/04: of the sorption type
- F25B 17/08: the absorbent or adsorbent being a solid, e.g. salt (F25B17/12 takes precedence)
- F25B 35/04: using a solid as sorbent
- F28D 1/05366: {Assemblies of conduits connected to common headers, e.g. core type radiators}
- F28D 21/0015: {Heat and mass exchangers, e.g. with permeable walls}
- F28F 2255/04: comprising shape memory alloys or bimetallic elements
- 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
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)
- 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: an evaporator configured to evaporate a refrigerant; and an adsorbent heat exchanger provided with an adsorption member configured to adsorb vapor evaporated by the evaporator, and a heat transfer tube in which a heating medium flows. Here, the adsorbent heat exchanger includes a pressing mechanism configured to press and compress the adsorption member depending on a temperature of the heating medium flowing inside the heat transfer tube.

## Claims

### Claim 1

An adsorption heat pump comprising:
an evaporator configured to evaporate a refrigerant; and
an adsorbent heat exchanger including an adsorption member configured to adsorb vapor evaporated by the evaporator, and a heat transfer tube in which a heating medium flows,
wherein the adsorbent heat exchanger includes a pressing mechanism configured to press and compress the adsorption member depending on a temperature of the heating medium flowing inside the heat transfer tube, and
wherein the heat transfer tube includes:
an inlet manifold into which a heating medium flows;
an outlet manifold out of which the heating medium flows;
a plurality of branched tubes connected between the inlet manifold and the outlet manifold;
first heat transfer plates each placed perpendicular to the branched tubes and connecting the branched tubes; and
a second heat transfer plate placed parallel to the branched tubes and connecting the first heat transfer plates, and
the pressing mechanism includes:
a thermosensitive member fixed to the second heat transfer plate and designed to change in shape depending on a temperature of the heating medium flowing inside the branched tubes, the temperature being transferred to the thermosensitive member through the first heat transfer plates and the second heat transfer plate; and
a pressing plate pressing the adsorption member, which is sandwiched between the pressing plate and a corresponding one of the branched tubes, toward the corresponding one of the branched tubes due to changing in shape of the thermosensitive member,
when the temperature of the heating medium flowing inside the branched tubes is higher than a predetermined temperature, a pressing force against the pressing plate becomes larger due to changing in shape of the thermosensitive member, and the pressing plate moves toward the corresponding one of the branched tubes.

### Claim 2 (depends on 1)

The adsorption heat pump according to claim 1, wherein the thermosensitive member is a member formed of any one of a bimetal, a shape memory alloy, and a shape memory resin.

### Claim 3 (depends on 1)

The adsorption heat pump according to claim 1, wherein the adsorption member is formed of a plurality of adsorbent sheets superposed on one another.

### Claim 4 (depends on 3)

The adsorption heat pump according to claim 3, wherein the adsorbent sheets include fibrous activated carbon processed into a sheet shape.

### Claim 5 (depends on 1)

The adsorption heat pump according to claim 1, wherein the adsorption member includes at least one of silica gel, zeolite, and activated carbon.

### Claim 6 (depends on 1)

The adsorption heat pump according to claim 1, wherein water or methanol is used as the refrigerant.

### Claim 7 (depends on 1)

The adsorption heat pump according to claim 1, wherein when the temperature of the heating medium flowing inside the branched tubes is equal to or lower than the predetermined temperature, the pressing force against the pressing plate becomes smaller due to changing in shape of the thermosensitive member, and the pressing plate moves away from the corresponding one of the branched tubes.