Heat pump device and drying machine
US7325333B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Aug 30, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/21161
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
There are disclosed a heat pump device and a drying machine using the device in which abnormal water supplying into a water-cooling heat exchanger for use in water-cooling of a heat pump can be easily detected without disposing any water amount gauge particularly. The heat pump device comprises: a water-cooling heat exchanger 13 for taking heat of a refrigerant which enters a capillary tube 10; a water amount adjusting valve 15 for adjusting the amount of cooling water to be supplied to the water-cooling heat exchanger 13; a temperature sensor 25, 26, or 27 for detecting temperature of the cooling water in the water-cooling heat exchanger 13 or temperature of the refrigerant passed through the water-cooling heat exchanger; and a control unit 20 for controlling the water amount adjusting valve 15, and the control unit judges abnormal water supplying into the water-cooling heat exchanger 13 in accordance with the controlling state of the water amount adjusting valve 15 and a change of the temperature detected by the temperature sensor under the controlling state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.