US3610001A - Washing machine with slow cooldown feature - Google Patents

Washing machine with slow cooldown feature Download PDF

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Publication number
US3610001A
US3610001A US821861A US3610001DA US3610001A US 3610001 A US3610001 A US 3610001A US 821861 A US821861 A US 821861A US 3610001D A US3610001D A US 3610001DA US 3610001 A US3610001 A US 3610001A
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United States
Prior art keywords
water
basket
machine
contacts
circuit
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Expired - Lifetime
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US821861A
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English (en)
Inventor
Norvin L Pellerin
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Pellerin Milnor Corp
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Pellerin Milnor Corp
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—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 
    • D06F23/02—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 rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof

Definitions

  • This invention relates to an improvement in washing machines or combined washing and cleaning machines which renders them particularly suitable for use in connection with fabrics containing polyester fibers.
  • Such fabrics have permanent press properties, which enable them to retain, through repeated washings or cleanings, a shape or crease which has been initially imparted thereto at high temperatures. Yet in order to wash or clean these fabrics some heat must ordinarily be employed, and it has been found that if they are heated up to say 190 or 200 F., and then suddenly cooled, the quality of the permanent press which has been imparted thereto is impaired. On the other hand, if the fabric 18 cooled gradually, the permanent press is retained.
  • FIG. 1 is an axial sectional view of an automatic washing machine, taken through the rotating basket which holds the clothes and the stationary casing therefor;
  • FIG. 2 is a circuit diagram showing the electrical con trol circuit for a first embodiment of the machine, nsofar as it differs from the circuits of conventional machines;
  • FIG. 3 is a circuit diagram for a second embodiment of my machine.
  • washing machine has been chosen as the embodiment to be described, it will be appreciated that a combined washing and dry cleaning machine could utilize the basic principle of the invention.
  • my mach ne comprises a perforate basket 10, which will ordinarily be divided longitudinally into a plurality of compartments and is mounted to rotate about a horizontal shaft 11 within a stationary housing 12. Access to the basket is provided through at least one door 13 in at least one end of the housing and a corresponding door 14 in said basket for each compartment in that basket.
  • a valve-controlled main water inlet 15 is provided in the wall of the housing and a vernier valve-controlled water inlet 16 for use during slow cooling, is provided near the bottom thereof.
  • a valved outlet 17 is also provided near the bottom of the housing, and a constantly open overflow outlet 18 is provided near the top of the housing.
  • thermostats HT and LT are responsive to the temperature of the water in the basket.
  • the electrical control system for an automatic washing machine may be quite complex, and many suitable circuits for this purpose are in use.
  • My invention is, however, directed solely to modifications in that portion of said circuits which controls the flow of water during rinsing, and consequently only that portion of a complete circuit is shown in detail in FIG. 2.
  • a representative machine of this type contains high and low voltage control circuits.
  • the high voltage circuit powers the motors, and drives a timer, which may comprise a tape T passing between a series of fingers 21, and when a conductive aperture in the tape appears beneath a specific finger an electrical circuit between that finger and the conductive circuit is completed. Completion of a circuit through each finger initiates a specific step in the operation of the machine. The tape travels horizontally of the figure.
  • These specific circuits are the low voltage" circuits shown on the drawing. It will be appreciated that the particular functions of these circuits are to some extent a matter of choice, and since the functions of most of them form no part of this invention, they will not be described in detail. It will also be appreciated that the order in which these individual low voltage circuits appear in the drawing does not necessarily represent the order in which they are energized. This order is determined entirely by the position of the apertures in the control tape which passes between the conductive surface and the fingers.
  • the next low voltage circuit to be closed is Supply No. 3. Closing of this circuit automatically introduces some type of supplies into the basket, ordinarily, in this case, a bleach. It will be seen that because contacts HTS have been opened, and contacts HT6 closed, as described above, the Supply No. 3 circuit passes through the contacts of a timer, the control for which (TDC) is set for two minutes, or some shorter period. At the end of this period the contacts TD are opened and no further supplies are introduced. The reason for this precaution is that the supplies are usually flushed in with hot water, and the introduction of too much such water might cause the temperature to rise above the valve for which the high temperature thermostat HT is set.
  • a switch ML is shown in series between the vernier valve 16 and contacts LT1 and HT1, which are in parallel. This switch is responsive to a rise in the water level in the basket beyond a predetermined acceptable maximum. If this should occur, the switch ML opens and no additional water can be introduced through the vernier valve 16.
  • a timer can be introduced into the circuit controlling the main cold water valve, and the thermostatically controlled relay or relays can be connected to actuate this timer to periodically interrupt the flow through the main valve, thus diminishing the volume of flow therethrough to whatever extent may be required.
  • FIG. 3 shows only the circuitry which must be substituted for the circuitry within the box shown in broken lines in FIG. 2 in order to accomplish this purpose.
  • the valve 16 and contacts LT1, HT1 are, of course, eliminated.
  • the solenoid HTS when energized, opens normally closed contacts HT7, and closes normally open contacts HTS. Contact through the finger 21 energizing HTS also starts a timer A1 which intermittently opens and closes contacts A2 controlling the circuit to the cold water valve 15.
  • the switch ML1 in FIG. 3 is a pressure-responsive switch which breaks the circuit to the supply valve whenever a maximum water level is exceeded.
  • valve 16 controls a Water outlet instead of a water inlet.
  • a machine for removing soil from fabric articles by applying a heated liquid thereto said machine being of the type comprising a rotating basket within which said articles are enclosed, and a control system for automatically rotating said basket, introducing water at different temperatures into said basket, and for draining water from the bottom of said basket, said control system including a timer means adapted to initiate a draining step after a first operation in which said basket contains heated water, the improvement which comprises (a) means in said control system for automatically stopping the advance of said timer after completion of said first operation to the point at which said timer is about to initiate said draining step,
  • (0) means for automatically introducing a supply of treating material into said water when the temperature thereof has fallen to a first predetermined temperature below that which prevailed when the timer was stopped
  • said means for automatically introducing a supply of material comprises means to deactivate said temperature decreasing means and cause said timer to temporarily resume its advance when the temperature of said water has decreased to a selected value higher than said predetermined value, means actuated by said timer after the resumption of its advance for physically introducing said supply of treating material into said water, means for again stopping the advance of said timer and actuating said means for decreasing the temperature of said water, and means for causing said timer to again resume its advance and de-activating said temperature decreasing means after said water has reached said predetermined temperatures.
  • a machine as claimed in claim 1 in which said means for reducing the temperature of said water comprises means for introducing cold water into the bottom of said basket while said bottom draining means is closed, and an overflow outlet which permits water to flow out of said machine when the level in said basket exceeds a predetermined maximum.
  • a machine as claimed in claim 3 in which the means for introducing cold water while said bottom draining means is closed is a cold water inlet other than the main cold water inlet used at other times during the cycle of the machine and is adapted to deliver a smaller flow of Water.
  • a machine as claimed in claim 3 in which there is a single cold water inlet to said machine, and comprising means for cyclically interrupting the flow through said inlet while said timer is stopped and said draining means is closed.
  • a machine as claimed in claim 1 in which said means for decreasing the temperature of said water comprises valve means controlling the flow of water leaving said machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Treatment Of Fiber Materials (AREA)
US821861A 1969-05-05 1969-05-05 Washing machine with slow cooldown feature Expired - Lifetime US3610001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82186169A 1969-05-05 1969-05-05

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US3610001A true US3610001A (en) 1971-10-05

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Application Number Title Priority Date Filing Date
US821861A Expired - Lifetime US3610001A (en) 1969-05-05 1969-05-05 Washing machine with slow cooldown feature

Country Status (6)

Country Link
US (1) US3610001A (enrdf_load_stackoverflow)
JP (1) JPS4929335B1 (enrdf_load_stackoverflow)
BE (1) BE749905A (enrdf_load_stackoverflow)
CH (1) CH514017A (enrdf_load_stackoverflow)
FR (1) FR2047268A5 (enrdf_load_stackoverflow)
GB (1) GB1232779A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914107A (en) * 1972-06-21 1975-10-21 Christopher Ian Arthur Ellis Cleansing by laundering and like processes
DE2918125A1 (de) * 1978-05-05 1979-11-15 Pellerin Corp Milnor Wascheinrichtung
US4410329A (en) * 1981-11-06 1983-10-18 General Electric Company Washing machine with oversuds detection and correction capability
US5161314A (en) * 1991-06-17 1992-11-10 American Dryer Corporation Apparatus and method for controlling a drying cool-down cycle of a clothes dryer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110318208A (zh) * 2018-03-30 2019-10-11 青岛海尔洗碗机有限公司 家用电器控制方法及家用电器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914107A (en) * 1972-06-21 1975-10-21 Christopher Ian Arthur Ellis Cleansing by laundering and like processes
DE2918125A1 (de) * 1978-05-05 1979-11-15 Pellerin Corp Milnor Wascheinrichtung
US4410329A (en) * 1981-11-06 1983-10-18 General Electric Company Washing machine with oversuds detection and correction capability
US5161314A (en) * 1991-06-17 1992-11-10 American Dryer Corporation Apparatus and method for controlling a drying cool-down cycle of a clothes dryer

Also Published As

Publication number Publication date
JPS4929335B1 (enrdf_load_stackoverflow) 1974-08-03
FR2047268A5 (enrdf_load_stackoverflow) 1971-03-12
GB1232779A (enrdf_load_stackoverflow) 1971-05-19
BE749905A (fr) 1970-10-16
CH514017A (fr) 1971-10-15

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