Automatic ice making machine
US4619117A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1986 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Jan 13, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25C1/045
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In an automatic ice making machine which comprises a freezing chamber formed to define a plurality of open bottom freezing cells, a water plate provided under the freezing chamber for supplying water to be frozen to by spraying the same into the freezing cells, a water tank provided under the water plate for storing a necessary amount of water to be frozen for one freezing cycle, a water inlet valve connected to a feed pipe for supplying water to the water tank, and a water inlet valve controlling timer circuit for controlling the opening and closing of the water inlet valve, and wherein during a defrosting operation, the water plate and the water tank are caused to be inclined downwardly so as to discharge ice cubes the water inlet valve controlling timer circuit comprises a first means for permitting the water inlet valve to open for a first set period of time, a second means for permitting the water inlet valve to open for a second set period of time which is shorter than the first set period of time, and a changeover means which selects the first means only during an initial freezing cycle and switches to the second means during the second and subsequent freezing cycles. The pr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.