WO2008032997A1

WO2008032997A1 - Multi-washing machine and method of controlling the same

Info

Publication number: WO2008032997A1
Application number: PCT/KR2007/004446
Authority: WO
Inventors: Jin Sik Lee; Tae Ho Lee; Jin Hong Lee; Sung Kyun Wee
Original assignee: Jin Sik Lee; Tae Ho Lee; Jin Hong Lee; Sung Kyun Wee
Priority date: 2006-09-15
Filing date: 2007-09-14
Publication date: 2008-03-20
Also published as: KR20070065202A; KR100839047B1

Abstract

A multi-washing machine is disclosed. The multi-washing machine, including a plurality of washing tubs for washing laundry; a multi-washing machine control unit for programming control data for respective washing functions for the plurality of washing tubs, supplying dry cleaning solvent necessary when laundry is washed in the respective tubs, and collecting, classifying, and storing washing solvent; and a tank controlled by the multi- washing machine control unit and configured to store the solvent classified by the multi- washing machine control unit. The multi-washing machine control unit includes a signal control unit connected to the plurality of washing tubs and configured to perform signal control; a solvent classification unit configured to classify solvent used in the plurality of washing tubs; and a blower control unit configured to perform drying control on the plurality of washing tubs.

Description

MULTI-WASHING MACHINE AND METHOD OF CONTROLLING THE SAME

Technical Field

[1] The present invention relates, in general, to a multi-washing machine, and, more particularly, to a multi-washing machine, which is adapted to control a plurality of washing machines, dry laundry, and collect dry cleaning solvent in a multi-control manner in an industrial washing factory in which two or more dry cleaning-dedicated washing machines, drying machines, and solvent collecting machines are used, other than in a general domestic washing machine, and a method of controlling the same. Background Art

[2] Generally, washing machines are apparatuses which wash clothes using mechanical energy. Such a washing machine uses an electric motor as a main power source, and conducts a process of washing, rinsing, and spin-drying so as to remove dirt adhered to clothes using the action of detergent and water. The washing machine includes an electric motor as a power generator, a mechanical unit for applying energy to laundry, a control unit for adjusting washing processes, a water feeding unit for feeding washing water, and a water draining unit for draining washing water.

[3] Currently, washing machines which are used in the world may be classified into three types, that is, a drum type (cylinder type) washing machine mainly used in Europe, an agitator type washing machine used in North America, and a pulsator type washing machine used in East Asia, such as Korea and Japan.

[4] In the drum type washing machine, water, detergent, and laundry are contained inside the drum in which a plurality of protrusions is formed, the drum rotates around a horizontal axis at a low speed, and the laundry is washed by the impact occurring when the laundry is upwardly raised and then dropped by the protrusions. This type of washing machine has advantages of almost completely preventing laundry from being damaged and using a small amount of water. However, the washing ability thereof is weak, and thus water should be heated using an electronic heater. Therefore, the drum type washing machine has problems in that it consumes a lot of electric power, takes a long time, and makes noise.

[5] The agitator type washing machine washes laundry by alternatively rotating wing- shaped agitators, provided at the center of a washing tub, in clockwise and counterclockwise directions. The agitator type washing machine has excellent washing ability but has problems in that the washing machine generates loud noise and heavily vibrates and in that laundry is damaged. The agitator type washing machine is suitably implemented as a large-sized washing machine.

[6] The pulsator type washing machine, widely used in Korea, was developed in Japan in the 1960s, and washes laundry using water current generated by rotating a disk- shaped pulsator. In the initial pulsator type washing machine, the pulsator had a small diameter and rotated at a high speed, thereby entailing a problem in that clothes were badly tangled and damaged. However, after the 1980s when the size of a pulsator was enlarged and the direction reversal time was reduced, such problems were alleviated, and the washing ability thereof became excellent. In particular, large-sized pulstor products having a short direction reversal time may be classified as an agitator type due to the characteristics thereof.

[7] Further, such pulsator type washing machines are divided into a double tub washing machine, in which a washing tub and a spin-drying tub are separated, and a single tub washing machine, in which washing/rinsing/spin-drying are performed inside the same tub. Such double tub washing machines are divided into an automatic washing machine (also called a semi-automatic washing machine), in which washing and rinsing are automatically conducted in sequence, and a manual washing machine, in which water feeding and washing/rinsing must be manually selected. In the single tub washing machine, all the processes of washing/rinsing/spin-drying are automatically conducted in sequence. The single tub washing machine is called a full automatic washing machine so as to distinguish it from the automatic washing machine.

[8] In addition, there are a vibration washing machine, which vibrates a vibration plate using mechanical impact, an ultrasonic washing machine, which electrically oscillates a vibrator, a hydraulic washing machine, which uses a high-pressure pump, and a dry cleaning-dedicated washing machine, which is used in a cleaner. Compared to a general washing machine that performs wet washing which uses water, the dry cleaning-dedicated washing machine is classified as a dry washing machine because the dry cleaning-dedicated washing machine washes laundry using organic solvent, such as petroleum solvent and perchloroethylene, which were developed for dry cleaning, instead of water. The dry cleaning-dedicated washing machine has a structure which has the shape of a drum type washing machine to which a device for refining solvent is attached, and is used to wash fiber which is easily damaged when it is washed using water, and dyed goods which have low ruggedness against water.

[9] FIG. 1 is a flowchart showing the operation of a conventional washing machine.

[10] As shown in the drawing, the operation of the conventional washing machine includes feeding oil and washing laundry until a timer indicates that time is over at steps STl and ST2; draining oil, feeding oil, and rinsing the laundry until a timer indicates that time is over after feeding oil and washing the laundry at steps ST3 and ST4; and draining oil after draining oil, feeding oil, and rinsing the laundry at step ST5.

[11] Therefore, such a conventional washing machine conducts sequential (temporal) operations using a timer and an inverter.

[12] FIG. 2 is a flowchart showing the operation of a conventional drying machine.

[13] As shown in the drawing, the operation of the conventional drying machine includes blowing hot air at step STl 1; determining whether a timer indicates that time is over while hot air is being blown at step ST 12; blowing hot air again if time is not over, or checking whether the laundry is dry if time is over at step ST 13; blowing hot air again if the laundry is not dry, or terminating the operation if the laundry is dry.

[14] Therefore, the conventional drying machine also conducts sequential (temporal) operations using a timer and an inverter.

[15] FIG. 3 is a flowchart showing the operation of a conventional solvent collecting machine.

[16] As shown in the drawing, the operation of a conventional solvent collecting machine includes collecting solvent at step ST21; determining whether a timer indicates that time is over when the solvent is being collected at step ST22; collecting the solvent again if time is not over, or determining whether to operate the drying machine if time is over at step ST23; and collecting the solvent again if it is determined that the drying machine is not to be operated or terminating the operation if it is determined that the drying machine is to be operated.

[17] Therefore, the conventional solvent collecting machine also conducts sequential

(temporal) operations using a timer and an inverter.

[18] However, according to the above-described prior art, a washing machine, a drying machine, and a solvent collecting machine are separately used. That is, there is no technology for controlling a plurality of washing machines in an industrial washing factory in which two or more dry cleaning-dedicated washing machines, drying machines, and solvent collecting machines are used, other than in a general domestic washing machine.

[19] Further, as times have changed, environmental restrictions have been strengthened and the utilization of space has become an important factor to consider. However, according to the prior art, technology that meets environmental restrictions for the usage of a plurality of washing machines or can maximize the utilization of space has not been developed. Disclosure of Invention Technical Problem

[20] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a multi- washing machine which can control a plurality of washing machines, dry laundry, and collect dry cleaning solvent in a multi-control manner in an industrial washing factory in which two or more dry cleaning-dedicated washing machines, drying machines, and solvent collecting machines are used, other than in a general domestic washing machine.

[21] Another object of the present invention is to provide a multi- washing machine capable of controlling a domestic washing tub, drying laundry, and collecting dry- cleaning solvent. Technical Solution

[22] In order to accomplish the above objects, a multi- washing machine according to an embodiment of the present invention, includes a plurality of washing tubs for washing laundry; a multi- washing machine control unit for programming control data for respective washing functions for the plurality of washing tubs, supplying dry cleaning solvent necessary when laundry is washed in the respective tubs, and collecting, classifying, and storing washing solvent; and a tank controlled by the multi- washing machine control unit and configured to store the solvent classified by the multi- washing machine control unit.

[23] In order to accomplish the above objects, a method of controlling a multi- washing machine according to an embodiment of the present invention, including a first step of selecting laundry, solvent, and baskets for respective washing tubs of the multi- washing machine using a multi- washing machine control unit; a second step of feeding oil and washing laundry after the first step; a third step of feeding oil, draining the oil, and rinsing laundry after the second step; and a fourth step of draining oil, drying laundry, and collecting solvent after the third step.

Advantageous Effects

[24] The multi- washing machine and the method of controlling the same according to the present invention have an advantage of controlling a plurality of washing machines, drying laundry, and collecting dry cleaning solvent in a multi-control manner in an industrial washing factory in which two or more dry cleaning-dedicated washing machines, drying machines, and solvent collecting machines are used other than in a general domestic washing machine.

[25] Further, the present invention has advantages in that new solvent can be stored, a filtering function can be provided, and used oil is classified and stored, so that strengthened environmental restrictions can be met, and the utilization of space can be increased by appropriately controlling a plurality of washing machines.

[26] Further, the present invention has advantages in that a domestic washing tub is manufactured to be accommodated in a sink, so that the domestic washing tub can be controlled, laundry can be dried, and dry cleaning solvent can be collected.

[27] Although the present invention has been described with reference to the preferred embodiments of the present invention, the present invention is not limited thereto, and various modifications and other equivalents are possible. Accordingly, it will be apparent that the embodiments can be appropriately modified and applied in the present invention and the various applications in the range of the rights of the patent of the present invention fall within based on technical spirit described in the accompanying claims. Brief Description of the Drawings

[28] FIG. 1 is a flowchart showing the operation of a conventional washing machine;

[29] FIG. 2 is a flowchart showing the operation of a conventional drying machine;

[30] FIG. 2 is a flowchart showing the operation of a conventional solvent collecting machine;

[31] FIG. 4 is a block diagram showing a multi- washing machine according to an embodiment of the present invention;

[32] FIG. 5 is a conceptual diagram showing an example of the construction of FIG. 4;

[33] FIG. 6 is a flowchart showing a method of controlling a multi-washing machine according to an embodiment of the present invention; and

[34] FIG. 7 is a block diagram showing a multi- washing machine according to another embodiment of the present invention.

[35] <Description of reference numerals of principal elements in the drawings>

[36] 10 : washing tubs 11 : domestic washing tub

[37] 20 : multi- washing machine control unit 21 : signal control unit

[38] 22 : solvent classification unit 23 : blower control unit

[39] 30 : tank 31 : new oil tank

[40] 32 : used oil tank 33 : waste oil tank

[41] 40 : domestic washing machine control unit 41 : signal control unit

[42] 42 : solvent classification unit 43 : blower control unit

Best Mode for Carrying Out the Invention

[43] Embodiments of a multi- washing machine and a method of controlling the same in conformity with the technical spirit of the present invention will be described in detail with reference to the attached drawings below.

[44] FIG. 4 is a block diagram showing the multi- washing machine according to an embodiment of the present invention, and FIG. 5 is a conceptual diagram showing an example of the construction of FIG. 4.

[45] As shown in the drawings, the multi- washing machine includes a plurality of washing tubs 10 for washing laundry; a multi-washing machine control unit 20 for programming control data for respective washing functions for the plurality of washing tubs 10, supplying dry cleaning solvent necessary when the laundry is washed in the washing tubs 10, and collecting, classifying, and storing washing solvent, and a tank 30 controlled by the multi- washing machine control unit 20 and configured to store the solvent classified by the multi- washing machine control unit 20.

[46] The multi- washing machine control unit 20 includes a signal control unit 21 connected to the plurality of washing tubs 10 and configured to perform signal control; a solvent classification unit 22 configured to classify solvent used by the plurality of washing tubs 10; and a blower control unit 23 configured to perform drying control on the plurality of washing tubs 10.

[47] The signal control unit 21 performs signal control on one or more of the spin speed, spin time, oil drainage time, and oil drainage spin speed of the plurality of washing tubs 10.

[48] The solvent classification unit 22 controls the supply of dry cleaning solvent to the plurality of washing tubs 10, classifies the solvent used in the plurality of washing tubs 10 into new oil, used oil, and waste oil, and processes the resulting oil.

[49] The blower control unit 23 has one or more of functions of controlling the ventilation and temperature of the plurality of washing tubs 10, and controls the plurality of washing tubs 10.

[50] The tank 30 is controlled by the solvent classification unit 22 of the multi- washing machine control unit 20, and includes one or more of a new oil tank 31 for storing new oil, a used oil tank 32 for storing used oil, and a waste oil tank 33 for storing waste oil.

[51] Further, a multi- washing machine includes a plurality of washing tubs 10 for washing laundry; a multi- washing machine control unit 20, including one or more of a signal control unit 21 connected to the plurality of washing tubs 10 and configured to perform signal control on one or more of the spin speed, spin time, oil drainage time, and oil drainage spin speed of the washing tubs 10, a solvent classification unit 22 configured to control the supply of dry cleaning solvent to the plurality of washing tubs

10, to classify the solvent used in the plurality of washing tubs 10 into new oil, used

011, and waste oil, and to process the resulting oil, and a blower control unit 23, configured to have one or more of functions of controlling ventilation and temperature, and to control the plurality of washing tubs 10, the multi- washing machine control unit 20 programming control data for respective washing functions for the plurality of washing tubs 10, supplying dry cleaning solvent necessary when the laundry is washed in the washing tubs 10, and collecting, classifying, and storing washing solvent; and a tank 30 controlled by the multi- washing machine control unit 20, configured to one or more of a new oil tank 31 for storing new oil, a used oil tank 32 for storing used oil, and a waste oil tank 33 for storing waste oil, and to store the solvent classified by the multi-washing machine control unit 20.

[52] FIG. 6 is a flowchart showing a method of controlling a multi- washing machine according to an embodiment of the present invention.

[53] As shown in the drawing, the method of controlling a multi- washing machine 10 includes a first step of selecting laundry, solvent, and baskets for the respective washing tubs 10 of the multi- washing machine using the multi- washing machine control unit 20 at step ST31 ; a second step of feeding oil and washing laundry at steps ST32 and ST33 after the first step; a third step of feeding oil, draining the oil, and rinsing laundry at steps ST34 and ST35 after the second step; and a fourth step of draining oil, drying laundry, and collecting solvent at steps ST36 and ST37 after the third step.

[54] The second, third, and fourth steps are repeatedly performed.

[55] If it is determined to use solvent again after the fourth step, the method of controlling a multi- washing machine further includes a fifth step of storing solvent in the tank 30 at steps ST38 and ST39.

[56] FIG. 7 is a block diagram showing a multi-washing machine according to another embodiment of the present invention.

[57] As shown in the FIG. 7, the multi-washing machine includes a domestic washing tub 11 for washing laundry; a domestic washing machine control unit 40 for programming control data for respective washing functions for the domestic washing tub 11, supplying dry cleaning solvent necessary when the laundry is washed in the domestic washing tub 11, and collecting, classifying, and storing washing solvent; and a tank 30 controlled by the domestic washing machine control unit 40, and configured to store the solvent classified by the domestic washing machine control unit 20.

[58] The domestic washing machine control unit 40 includes a signal control unit 41 connected to the domestic washing tub 11 and configured to perform signal control; a solvent classification unit 42 configured to classify solvent used in the domestic washing tub 11 ; and a blower control unit 43 configured to perform drying control on the domestic washing tub 11.

[59] The signal control unit 41 performs signal control on one or more of speed, spin time, oil drainage time, and oil drainage spin speed of the domestic washing tub 11.

[60] The solvent classification unit 42 controls the supply of dry cleaning solvent to the domestic washing tub 11, classifies the solvent used in the domestic washing tub 11 into new oil, used oil, and waste oil, and processes the resulting oil.

[61] The blower control unit 23 includes one or more of functions of controlling the ventilation and temperature of the domestic washing tub 11, and controls the domestic washing tub 11.

[62] The tank 30 is controlled by the solvent classification unit 42 of the domestic washing machine control unit 40, and includes one or more of a new oil tank 31 for storing new oil, a used oil tank 32 for storing used oil, and a waste oil tank 33 for storing waste oil.

[63] Further, a multi- washing machine includes a domestic washing tub 11 for washing laundry; a domestic washing machine control unit 40, including one or more of a signal control unit 41 configured to perform signal control on one or more of the spin speed, spin time, oil drainage time, and oil drainage spin speed of the domestic washing tub 11, a solvent classification unit 42 configured to control the supply of dry cleaning solvent to the domestic washing tub 11, to classify the solvent used in the domestic washing tub 11 into new oil, used oil, and waste oil, and to process the resulting oil, and a blower control unit 43 configured to have one or more of functions of controlling ventilation and temperature, and to control the domestic washing tub 11, the domestic washing machine control unit 40 programming control data for respective washing functions for the domestic washing tub 11, supplying dry cleaning solvent necessary when laundry is washed in the domestic washing tub 11, and collecting, classifying, and storing washing solvent; and a tank 30 controlled by the domestic washing machine control unit 40, configured to include one or more of a new oil tank 31 for storing new oil, a used oil tank 32 for storing used oil, and a waste oil tank 33 for storing waste oil, and to store the solvent classified by the domestic washing machine control unit.

[64] The preferred embodiments of the multi- washing machine having the construction described above and the method of controlling the same according to the present invention will be described in detail with reference to the accompanying drawings below. It should be noted that, in the following description, if it is determined that detailed descriptions of well-known functions related to the present invention and the construction thereof make the gist of the present invention obscure, they will be omitted. Terms and words, which will be described later, are defined in consideration of the functions thereof in the present invention, and the meanings of the terms and words differ according to the intention of a user or operator or to the case. Therefore, the meanings of the terms and words should be interpreted based on the overall content of this specification.

[65] First, the present invention is provided to control a plurality of washing machines, dry laundry, and collect dry cleaning solvent in a multi-control manner in an industrial washing factory in which two or more dry cleaning-dedicated washing machines, drying machines, and solvent collecting machines are used, other than in a general domestic washing machine.

[66] FIG. 4 is a block diagram showing the multi- washing machine according to the embodiment of the present invention, and FIG. 5 is a diagram showing an example of the construction of FIG. 4.

[67] Therefore, the present invention includes the plurality of washing tubs 10, the multi-washing machine control unit 20, and the tank 30. With this construction, the multi-washing machine can be industrially used.

[68] The present invention includes a small enclosed basket (drum) and a driving motor so as to perform washing processes, and programs control data for respective washing functions. Further, the present invention integratedly supplies, collects, classifies, and stores dry cleaning solvent necessary for the washing processes. In addition, the multi- washing machine control unit 20 communications with the respective tubs (baskets) of the plurality of washing tubs 10, and generally controls the washing tubs 10.

[69] Further, the present invention can control a plurality of washing machines in a limited space, perform washing processes separately selected for the respective washing tubs (baskets), and separately input and adjust the respective washing functions (washing time and the number of spin cycles).

[70] Furthermore, the present invention supplies a small amount of solvent to the respective washing tubs (washing processes), so that the problem of environmental restrictions can be solved, and solvent that is evaporated during a drying process can be collected.

[71] Therefore, the multi- washing machine control unit 20 includes the signal control unit 21, the solvent classification unit 22, and the blower control unit 23, and can program control data for respective washing functions for the plurality of washing tubs 10, can supply the dry cleaning solvent necessary when laundry is washed in the plurality of washing tubs 10, and can collect, classify, and store the washing solvent.

[72] Further, the signal control unit 21 of the multi- washing machine control unit 20 is connected to the plurality of washing tubs 10 and performs signal control, that is, the signal control unit 21 controls the spin speed, spin time, oil drainage time, and oil drainage spin speed of the plurality of washing tubs.

[73] Further, the solvent classification unit 22 classifies solvent used in the plurality of washing tubs 10, that is, the solvent classification unit 22 controls the supply of dry cleaning solvent to the plurality of washing tubs 10, classifies the solvent used in the plurality of washing tubs 10 into new oil, used oil, and waste oil, and processes the resulting oil. Therefore, the solvent, classified by the solvent classification unit 22, can be classified and stored in the new oil tank 31, used oil tank 32, and waste oil tank 33 of the tank 30, and can then be processed.

[74] Furthermore, the blower control unit 23 performs drying control on the plurality of washing tubs 10, that is, the blower control unit 23 performs functions of controlling ventilation and temperature.

[75] Further, the tank 30 is controlled by the multi- washing machine control unit 20, stores solvent classified by the multi-washing machine control unit 20, and includes the new oil tank 31, the used oil tank 32, and the waste oil tank 33. [76] The new oil tank 31, the used oil tank 32, and the waste oil tank 33 are controlled by the solvent classification unit 22 of the multi-washing machine control unit 20, and store the classified new oil, used oil, and waste oil, respectively. [77] FIG. 6 is a flowchart showing a method of controlling a multi-washing machine according to an embodiment of the present invention. [78] First, the multi-washing machine control unit 20 selects laundry, solvent, and baskets for the respective washing tubs 10 of the multi- washing machine at step ST31. [79] Thereafter, the processes of feeding oil and washing laundry are performed at step

ST32, and it is determined whether to repeat the process of washing laundry at step

ST33. [80] If it is determined to repeat the process of washing laundry, the processes of feeding oil and washing laundry are performed again. Otherwise, the process proceeds to the next step. [81] After it is determined whether to repeat the process of washing laundry, the processes of feeding oil, draining oil, and rinsing laundry are performed at step ST34.

Thereafter, it is determined whether to repeat the process of rinsing laundry at step

ST35. [82] If it is determined to repeat the process of rinsing laundry, the processes of feeding oil, draining oil, and rinsing laundry are performed again. Otherwise, the process proceeds to the next step. [83] After it is determined whether to repeat the process of rinsing laundry, the processes of draining oil, drying laundry, and collecting solvent are performed at step ST36.

Thereafter, it is determined whether to repeat the processes of drying laundry and collecting solvent at step ST37. [84] If it is determined to repeat the processes of drying laundry and collecting solvent, the processes of draining oil, drying laundry, and collecting solvent are performed again. Otherwise, the process proceeds to the next step. [85] After it is determined whether to repeat the processes of drying laundry and collecting solvent, it is determined whether to use solvent again at step ST38. [86] If it is determined to use solvent again, the solvent is stored in the tank 30.

Therefore, the solvent stored in the tank 30 can be used in the washing tubs 10 again under the control of the multi- washing machine control unit 20 at step ST39. [87] Meanwhile, FIG. 7 is a block diagram showing the multi- washing machine according to another embodiment of the present invention. [88] If a small-sized washing tub, such as the domestic washing tub 11, is manufactured and to be accommodated in a sink, the washing tub can be used for a domestic dry cleaning machine. [89] For this purpose, the domestic dry cleaning machine includes the domestic washing tub 11, the domestic washing machine control unit 40, and the tank 30. [90] Therefore, the domestic washing machine control unit 40 programs control data for respective washing functions for the domestic washing tub 11, supplies the dry cleaning solvent necessary when laundry is washed in the domestic washing tub 11, and collects, classifies, and stores the washing solvent. [91] For this purpose, the signal control unit 41 of the domestic washing machine control unit 40 controls the spin speed, spin time, oil drainage time, and oil drainage spin speed of the domestic washing tub 11. [92] Further, the solvent classification unit 42 controls the supply of dry cleaning solvent to the domestic washing tub 11. Further, the solvent classification unit 42 classifies the solvent used in the domestic washing tub 11 into new oil, used oil, and waste oil, tramsfers the resulting oil to the tank 30, and processes the oil. [93] Further, the blower control unit 43 performs a function of controlling ventilation and controlling temperature for the domestic washing tub 11. [94] Furthermore, the tank 30 is controlled by the domestic washing machine control unit 40. The tank 30 includes one or more of the new oil tank 31 for storing new oil, the used oil tank 32 for storing used oil, and the waste oil tank 33 for storing waste oil, and stores the solvent classified by the domestic washing machine control unit 20. [95] As described above, the present invention controls a plurality of washing machines, dries laundry, and collects dry cleaning solvent in a multi-control manner in an industrial washing factory, and controls a domestic washing tub, dries laundry, and collects dry cleaning solvent.

Claims

[1] A multi- washing machine, comprising: a plurality of washing tubs for washing laundry; a multi- washing machine control unit for programming control data for respective washing functions for the plurality of washing tubs, supplying dry cleaning solvent necessary when laundry is washed in the respective tubs, and collecting, classifying, and storing washing solvent; and a tank controlled by the multi- washing machine control unit and configured to store the solvent classified by the multi- washing machine control unit.

[2] The multi- washing machine according to claim 1, wherein the multi- washing machine control unit comprises: a signal control unit connected to the plurality of washing tubs and configured to perform signal control; a solvent classification unit configured to classify solvent used in the plurality of washing tubs; and a blower control unit configured to perform drying control on the plurality of washing tubs.

[3] The multi- washing machine according to claim 2, wherein the signal control unit performs signal control on one or more of speed, spin time, oil drainage time, and oil drainage spin speed of the plurality of washing tubs.

[4] The multi- washing machine according to claim 2, wherein the solvent classification unit controls supply of dry cleaning solvent to the plurality of washing tubs, classifies the solvent used in the plurality of washing tubs into new oil, used oil, and waste oil, and processes the resulting oil.

[5] The multi- washing machine according to claim 2, wherein the blower control unit comprises one or more of functions of controlling ventilation and temperature of the plurality of washing tubs.

[6] The multi- washing machine according to any one of claims 1 to 5, wherein the tank is controlled by the solvent classification unit of the multi- washing machine control unit, and comprises one or more of a new oil tank for storing new oil, a used oil tank for storing used oil, and a waste oil tank for storing waste oil.

[7] A multi-washing machine, comprising: a plurality of washing tubs for washing laundry; a multi- washing machine control unit, including one or more of a signal control unit connected to the plurality of washing tubs and configured to perform signal control on one or more of a spin speed, spin time, oil drainage time, and oil drainage spin speed of a washing tubs, a solvent classification unit configured to control supply of dry cleaning solvent to the plurality of washing tubs, to classify the solvent used in the plurality of washing tubs into new oil, used oil, and waste oil, and to process the resulting oil, and a blower control unit configured to have one or more of functions of controlling ventilation and temperature, and to control the plurality of washing tubs, the multi-washing machine control unit programming control data for respective washing functions for the plurality of washing tubs, supplying dry cleaning solvent necessary when the laundry is washed in the washing tubs, and collecting, classifying, and storing washing solvent; and a tank controlled by the multi- washing machine control unit, and configured to in elude one or more of a new oil tank for storing new oil, a used oil tank for storing used oil, and a waste oil tank for storing waste oil, and to store the solvent classified by the multi- washing machine control unit.

[8] A method of controlling a multi- washing machine, comprising: a first step of selecting laundry, solvent, and baskets for respective washing tubs of the multi- washing machine using a multi- washing machine control unit; a second step of feeding oil and washing laundry after the first step; a third step of feeding oil, draining the oil, and rinsing laundry after the second step; and a fourth step of draining oil, drying laundry, and collecting solvent after the third step.

[9] The method according to claim 8, wherein each of the second, third, and fourth steps is repeatedly performed.

[10] The method according to claim 8 or 9, further comprising a fifth step of storing the solvent in a tank if it is determined that the solvent is to be used again after performing the fourth step.

[11] A multi- washing machine, comprising: a domestic washing tub for washing laundry; a domestic washing machine control unit for programming control data for respective washing functions for the domestic washing tub, supplying dry cleaning solvent necessary when the laundry is washed in the domestic washing tub, and collecting, classifying, and storing washing solvent; and a tank controlled by the domestic washing machine control unit, and configured to store the solvent classified by the domestic washing machine control unit.

[12] The multi- washing machine according to claim 11, wherein the domestic washing machine control unit comprises: a signal control unit connected to the domestic washing tub, and configured to perform signal control; a solvent classification unit configured to classify solvent used in the domestic washing tub; and a blower control unit configured to perform drying control on the domestic washing tub.

[13] The multi-washing machine according to claim 12, wherein the signal control unit performs signal control on one or more of speed, spin time, oil drainage time, and oil drainage spin speed of the domestic washing tub.

[14] The multi- washing machine according to claim 12, wherein the solvent classification unit controls supply of dry cleaning solvent to the domestic washing tub, classifies the solvent used in the domestic washing tub into new oil, used oil, and waste oil, and processes the resulting oil.

[15] The multi-washing machine according to claim 12, wherein the blower control unit comprises one or more of functions of controlling ventilation and temperature of the domestic washing tub.

[16] The multi- washing machine according to any one of claims 11 to 15, wherein the tank is controlled by the solvent classification unit of the domestic washing machine control unit, and comprises one or more of a new oil tank for storing new oil, a used oil tank for storing used oil, and a waste oil tank for storing waste oil.

[17] A multi- washing machine, comprising: a domestic washing tub for washing laundry; a domestic washing machine control unit, including one or more of a signal control unit configured to perform signal control on one or more of spin speed, spin time, oil drainage time, and oil drainage spin speed of the domestic washing tub, a solvent classification unit configured to control supply of dry cleaning solvent to the domestic washing tub, to classify the solvent used in the domestic washing tub into new oil, used oil, and waste oil, and to process the resulting oil, and a blower control unit configured to have one or more of functions of controlling ventilation and temperature, and to control the domestic washing tub, the domestic washing machine control unit programming control data for respective washing functions for the domestic washing tub, supplying dry cleaning solvent necessary when the laundry is washed in the domestic washing tub, and collecting, classifying, and storing washing solvent; and a tank controlled by the domestic washing machine control unit, and configured to include one or more of a new oil tank for storing new oil, a used oil tank for storing used oil, and a waste oil tank for storing waste oil, and to store the solvent classified by the domestic washing machine control unit.