| 摘要 |
A washing machine suitable to effect a washing treatment, thermo-disinfection and possible drying of objects, including a washing chamber in which the objects to be treated are disposed, and a washing circuit including a plurality of exit paths for a washing liquid to be distributed toward the objects to be treated. On the bottom of the washing chamber, in association with a corresponding discharge aperture, valve means to discharge the washing liquid are disposed, which are directly connected to a pipe that discharges directly into the sewerage system. |
| 主权项 |
1. A washing machine to effect a washing treatment, thermo-disinfection and optional drying of objects, comprising:
a washing chamber for disposing therein the objects to be treated, wherein the washing chamber comprises a bottom, having on the bottom a corresponding discharge aperture on which, at exit, a single valve for the discharge of a washing liquid is directly mounted, an exit of said valve is in turn connected in direct communication to an inlet of a pipe for discharging directly into a sewerage system; a washing circuit comprising:
a plurality of washing liquid distributors providing exit paths for distributing the washing liquid toward the objects to be treated, the washing liquid distributors comprising nozzles or holes for passing the washing liquid therethrough;washing liquid feeder conduits to feed the respective distributors,a washing liquid heater for heating the washing liquid to a desired temperature prior to feeding the washing liquid feeder conduits which in turn feed the washing liquid to the distributors which discharge the washing liquid into the washing chamber, wherein the washing liquid heater is disposed outside the washing chamber, wherein the washing circuit comprises a first re-circling circuit comprising a first re-circling conduit in communication with the bottom of the washing chamber and the washing liquid heater for passing the washing liquid from the bottom of the washing chamber to the washing liquid heater, the first re-circling conduit comprising a pump to pump the washing liquid toward the washing liquid heater to be reintroduced into the washing chamber; an electrovalve mounted on the first re-circling conduit between the pump and the washing liquid heater, to adjust and to control a first stream of washing liquid in transit; and a temperature sensor disposed inside the washing chamber for transmitting an electric signal to an electronic control unit, the electrical signal correlated to a temperature inside the washing chamber for selective activation of the washing liquid heater, a blower for blowing in a drying fluid at a temperature inside the washing chamber for a drying step, the blower connected to the washing liquid heater to heat the drying fluid to a temperature for drying the washed objects, the washing liquid heater in fluid communication with the washing chamber to pass the heated drying fluid into the washing chamber, wherein the washing circuit comprises a recovery and accumulation tank, to receive and accumulate a determinate quantity of hot washing liquid from the bottom of the chamber, and a second re-circling circuit comprising a second re-circling conduit having a first end and a second end, wherein the first end is connected to the recovery and accumulation tank and the second end terminates into an upper portion of the washing chamber for transferring at least a portion of the quantity of the hot washing liquid present in the recovery and accumulation tank to directly inside the upper portion of the washing chamber, further comprising a first thermo-disinfection liquid tank for supplying, through a top wall of the washing chamber, a second stream of the washing liquid at a temperature for a final thermo-disinfection rinsing, further comprising a first feeder adapted to feed cold water, or other pre-wash liquid, into the chamber, a second feeder adapted to feed one or more chemical detergent components inside the chamber; and a third feeder, associated with the first thermo-disinfection liquid tank, and adapted to feed water, or other liquid for thermo-disinfection, into the chamber, and further comprising a heat exchanger located within the recovery and accumulation tank, the third feeder in fluid communication with an inlet of the heat exchanger, a discharge conduit in fluid communication with an outlet of the heat exchanger, the heat exchanger configured to pre-heat liquid fed by the third feeder and to recover heat from hot liquid accumulated in the recovery and accumulation tank and then pass the pre-heated liquid feed through the discharge conduit to the first thermo-disinfection liquid tank. |
