Combination washer/dryer having common heat source

• US 7,168,274 B2
• Filed: 05/05/2003
• Issued: 01/30/2007
• Est. Priority Date: 05/05/2003
• Status: Expired due to Term

• Current Assignee: American Dryer Corp (Whirlpool Corporation)
• Original Assignee: American Dryer Corp (Whirlpool Corporation)
• Inventors: Slutsky, Dennis, Bliss, Craig F.
• Primary Examiner(s): Stinson; Frankie L.
• Application Number:
  US10/428,994
• Publication Number:
  US 20040221474A1
• Time in Patent Office: 1,366 Days
• Field of Search: 68/19, 68/191, 68/192, 68/20, 68/24, 681/40, 345/26, 345/27, 345/73, 34/60
• US Class Current: 68/19
• CPC Class Codes: D06F 2103/16 Washing liquid temperature
• CPC Class Codes: D06F 2103/32 Temperature
• CPC Class Codes: D06F 2105/28 Electric heating
• CPC Class Codes: D06F 25/00 Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air control of washing or of washing and drying D06F33/00, D06F34/00; domestic laundry dryers D06F58/00
• CPC Class Codes: D06F 34/24 Liquid temperature
• CPC Class Codes: D06F 34/26 Condition of the drying air, e.g. air humidity or temperature
• CPC Class Codes: D06F 39/04 Heating arrangements
• CPC Class Codes: D06F 58/263 Gas heating equipment
• CPC Class Codes: D06F 58/40 Control of the initial heating of the drying chamber to its operating temperature

Abstract

The combination washer/dryer and method for operating a combination washer/dryer. The washer/dryer has a containment drum which receives wash water, and includes a perforated clothes drum which rotates within the containment drum. A heat plenum is provided in heat transfer relationship with the containment drum, and a source of heat coupled to the heat plenum supplies heat for water in the containment drum. During a drying cycle, hot air from the heat source supplied from the fire box to the containment drum for heating wash water during a washing cycle, and for supplying hot air during a drying cycle. A drying air plenum is connected to receive drying air from the source of heat, delivering the drying air to the top of the containment drum, where it enters the rotating basket. An exhaust plenum discharges hot air laden with moisture from the containment drum through a lint filter.

Claims

1. A combination washer dryer comprising:

a containment drum having a water supply plenum having an inlet for receiving wash water and an outlet for discharging said wash water;

a perforated clothes drum supported for rotation within said water supply plenum;

a source of heat coupled to supply heat to water in said water supply plenum;

a hot air supply plenum coupled to said source of heat, partially extending around one side of said water supply plenum to a first opening in said water supply plenum above a water level in said water supply plenum; and

an exhaust plenum extending from a second opening in said water supply plenum along an opposite side of said water supply plenum to an exhaust chamber, wherein following a washing cycle, said containment drum is emptied and hot air circulates during a drying cycle from said hot air supply plenum through said water supply plenum to said exhaust plenum drying clothes in said perforated clothes drum.

2. The combination washer dryer of claim 1 further comprising a blower coupled to said exhaust plenum for creating a draft in said exhaust plenum.

3. The combination washer dryer of claim 1 wherein said first and second openings are diametrically opposite each other.

4. The combination washer dryer of claim 1 further comprising S trap-shaped outlet connected to said drain for discharging wash water.

5. A combination washer dryer comprising:

a containment drum having a water supply plenum having an inlet for receiving wash water and an outlet for discharging said wash water;

a perforated clothes drum supported for rotation within said water supply plenum;

a source of heat having a fire box communicating with said containment drum for heating said containment drum wash water during a washing cycle, and for supplying hot hair during a drying cycle;

a drying air plenum connected to receive said drying air and delivering said drying air to an first opening in said water supply plenum during a drying cycle;

an exhaust plenum connected to a second opening in said water supply plenum for discharging drying air passing through said perforated clothes drum; and

a lint filter disposed in said exhaust plenum for collecting debris contained in said drying air.

6. The combination washer dryer according to claim 5 further comprising:

means for periodically cleaning said filter.

7. The combination washer dryer according to claim 5 further comprising a drain coupled to said outlet and said exhaust plenum for collecting lint from said filter and wash water from said outlet.

8. A combination washer-dryer comprising:

a base supporting a burner for heating water for a washing cycle and air during a drying cycle;

a containment drum assembly supported to said base, said containment drum having a door closing an opening to receive clothes to be washed, and having a water inlet for receiving wash water and outlet for discharging wash water, said assembly comprising;

a rotating clothes basket supported for rotation along a horizontal axis in said containment drum assembly;

a water plenum extending around a portion of the rotating clothes basket and in heat transfer relationship with said burner, said water plenum having an inlet for receiving said washing water and an outlet for discharging wash water;

an exhaust chamber connected to a bottom of said water plenum for discharging moisture laden drying air; and

a heating air chamber extending from an opening in the top of said water plenum to said burner for delivering drying air to clothes in said clothes basket which exits through said clothes basket to said exhaust chamber.

9. The combination washer-dryer according to claim 8 further comprising a controller which provides control over rotation of said drum so that during a spin cycle said drum is rotated at a plurality of speeds to prevent said clothes from forming clumps which are difficult to dry.

10. The combination washer-dryer according to claim 9 wherein said controller prior to entering a drying cycle alternately spins said clothes at higher and lower speeds.

11. The combination washer-dryer according to claim 10 wherein said controller progressively increases said higher speeds.