Title:
VUILLEMIER HEAT PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/1994/015157
Kind Code:
A1
Abstract:
A heat pump device composed of a high-temperature-side heat pump (2) comprising a high-temperature-side cylinder (21) which receives therein a high-temperature-side displacer (22), and a low-temperature-side heat pump (3) comprising a low-temperature-side cylinder (31) which receives therein a low-temperature-side displacer (32). Rods (23, 33) connected to the respective displacers (22, 23) are connected to each other by a coupling mechanism (4). Volume regulating means (8a) is provided for changing a volume in an intermediate-temperature space (35) in the low-temperature-side rod (33). In addition, volume control means (9a) is provided for detecting the number of revolutions of a crankshaft (42) on the coupling mechanism (4), calculating a volume in the intermediate-temperature space (35), which volume corresponds to the above number of revolutions, and controlling the volume regulating means (8a) such that the volume in the intermediate-temperature space (35) eqals the calculated volume. Thus an improvement of a net COP (coefficient of performance) is achieved.
Inventors:
ISHINO TSUTOMU (JP)
KITAMOTO MASAHIRO (JP)
KITAMOTO MASAHIRO (JP)
Application Number:
PCT/JP1993/001806
Publication Date:
July 07, 1994
Filing Date:
December 13, 1993
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
ISHINO TSUTOMU (JP)
KITAMOTO MASAHIRO (JP)
ISHINO TSUTOMU (JP)
KITAMOTO MASAHIRO (JP)
International Classes:
F25B9/14; F02G1/044; (IPC1-7): F25B9/14
Foreign References:
| JPH04198671A | 1992-07-20 | |||
| JPH024174A | 1990-01-09 | |||
| JPS63311050A | 1988-12-19 |
Other References:
See also references of EP 0629823A4
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