Title:
HEAT PUMP APPARATUS
Document Type and Number:
Japanese Patent JP3499287
Kind Code:
B2
Abstract:
PURPOSE: To simply and effectively prevent a malfunction itself, to prevent generation of overheat of an engine or to prevent a decrease in an efficiency of a heat pump apparatus.
CONSTITUTION: The heat pump apparatus has an engine 23 having a water cooling part, compressors A, B driven by the engine 23, and a refrigerant circuit 6 for circulating refrigerant to a condenser, an expansion valve 76, an evaporator, in which the refrigerant of the circuit 6 is circulated by driving the compressors A, B to move heat, and comprises at least two of a warm water tank having a heat exchanger for heat exchanging refrigerant with warm water after cooling the engine or a heat exchanger for heat exchanging it with warm water after cooling the engine, and a radiator for cooling the warm water after cooling the engine. The warm water is supplied to the two units by branching it to two from a warm water tube 100 after cooling the engine, combined with warm water lowered at its temperature after heat exchanging from the two units, returned to a chilled water tube 101 to a water cooling part of the engine. A flowing direction switching valve is disposed at one of the branches and the combining part.
Inventors:
Makoto Misawa
Masatsugu Arimura
Masatsugu Arimura
Application Number:
JP9803794A
Publication Date:
February 23, 2004
Filing Date:
April 12, 1994
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classes:
F25B27/00; F25B27/02; (IPC1-7): F25B27/02
Domestic Patent References:
| JP63290365A | ||||
| JP1123961A | ||||
| JP61107064A | ||||
| JP5989961A | ||||
| JP5215435A | ||||
| JP4148166A | ||||
| JP2140567A | ||||
| JP63207963A | ||||
| JP3100762U |
Attorney, Agent or Firm:
Mikio Nishimura
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