US 6,598,415 B2Granted

Absorption type cooling and heating apparatus

AssigneeHonda Giken Kogyo Kabushiki Kaisha

InventorsKazuma Ichikawa, Gou Mutou

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Abstract

There are provided a conduit 9b for transferring a refrigerant to the evaporator 9, a conduit 7b for transferring an absorbent solution to the regenerator 3, and a branch conduit 9a. A check valve 17 is provided for communicating the branch conduit 9a to the conduit 7b. A check valve V3 is provided for allowing the flow from the absorber 2 to the regenerator 3. The valve 17 and the valve V3 are communicated at downstream side to each other. Those check valves maybe assembled in a single unit where a valve is arranged of a (free) ball shape and can be shifted by a pressure difference to switches each valve port, acting as a three-way valve. At the start-up or full condensation mode, the check valve 17 remains open while the check valve V3 is closed. This permits the refrigerant to flow from the condenser 9 via the branch conduit 9a to the regenerator 3.

Claims3

Dependent claims

An absorption type cooling and heating apparatus having an evaporator for holding a refrigerant, an absorber for allowing an absorbent solution to absorb a refrigerant vapor generated in the evaporator, a regenerator for recovering the density of an absorbent in the absorbent solution by heating up to extract the refrigerant vapor from the absorbent solution, a refrigerant vapor passage for transferring the refrigerant vapor from the regenerator to a condenser, and the condenser for condensing the refrigerant vapor which is returned back to the evaporator, where in a cooling operation, a heat-pump heating operation, and a direct-burner heating operation can be performed selectively, said absorption type cooling and heating apparatus comprising:

a first conduit for transferring the condensed refrigerant generated in the condenser to the evaporator;
a second conduit for transferring the absorbent solution from the absorber to the regenerator;
a branch conduit branched from the first conduit;
and
a switching device for selectively communicating the branch conduit to the second conduit.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/053,574Filed 24 Jan 2002
Priority: JP P2001-03668414 Feb 2001
Published: US 2002/0108390 A115 Aug 2002
Granted: 29 Jul 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F25B 15/02
Sorption machines, plants or systems, operating continuously, e.g. absorption type: without inert gas
F25B 29/006
Combined heating and refrigeration systems, e.g. operating alternately or simultaneously: of the sorption type system
F25B 41/28
Disposition of valves, e.g. of on-off valves or flow control valves: specially adapted for sorption cycles
Y02A 30/27
Adapting or protecting infrastructure or their operation: relating to heating, ventilation or air conditioning [HVAC] technologies