JP4391888B2 - Monotab drum washing machine and washing control method thereof - Google Patents

Description

  The present invention relates to a drum washing machine, in particular, a monotab drum washing machine in which a tab and a drum are installed in a cabinet so as to be inclined, and water for washing is supplied only to the inclined drum to perform the entire process. The present invention relates to the washing control method.

  In general, a washing machine is a device for washing clothes using the power of the machine, mainly using an electric motor as the main power, washing and rinsing so as to separate dirt on clothes using detergent and water, The dehydration process will proceed. In particular, drum-type washing machines use the shock that water, detergent, and laundry are placed in a drum in which many protrusions are formed, and are rotated at a low speed around the horizontal axis, and the laundry is lifted and dropped by the protrusions. Thus, it is characterized by being able to use less water with almost no damage to washing.

A conventional drum-type washing machine is shown in FIG.
As shown in FIG. 1, a drum-type washing machine generally has a cabinet (1) that forms a skeleton, and a tab (2) that is installed horizontally in the cabinet (1) and stores washing water. The drum (3) rotatably installed inside the tab (2) and loaded with laundry, and the driving force generated by the motor (6) behind or below the tab (2) drum ( 3) a drum shaft (4), bearings (5) installed around both ends of the drum shaft (4), a spring (7) for supporting the tab (2), and the cabinet ( The damper (8) for reducing the vibration of the tab (2) generated during dehydration below 1), the door (9) installed in front of the cabinet, the door (9) and the tab (2) It has a gasket (10) installed therebetween, and a drain hose (12) for connecting a drain port (11) formed at the bottom of the tab (2) and a drain pump (13).

The operation of the conventional drum type washing machine will be described below with reference to the accompanying drawings.
Referring to FIG. 1, in the cabinet (1), a tab (2) and a drum (3) are installed in parallel with a predetermined gap, and a door (9) is installed on the front so as to be opened and closed. The

  After opening the door (9), put the laundry into the drum (3), close the door (9), put an appropriate amount of detergent in the detergent box according to the weight of the laundry and open the water supply port Then, the washing water together with the detergent flows into the tab (2). At this time, the washing water flowing into the tab (2) is supplied to a certain level through the drum (3) and the outer tab (2).

  Thereafter, electric power is applied to the heater installed at the bottom of the tab (2) to heat the washing water to a predetermined temperature.

  When the motor (6) is driven, the driving force of the motor is transmitted to the drum (3) through the drum shaft (4) and the bearing (5) to rotate the drum. Here, when the motor (6) is a direct connection type, it is installed behind the tab, and when it is a belt drive type, it is usually installed below the tab.

  As the drum (3) rotates, the laundry in the drum is lifted and dropped while being rolled by a lifter (not shown) of the drum (3). At this time, the warm washing water accumulated in the drum (3) flows along the inner surface of the drum (3), so that all the laundry is wet.

  In this way, if the laundry is completely wetted, the washing operation is started. In such a drum washing machine, the frictional force with the laundry is increased by the lifter on the inner surface of the drum (3) and the detergent is activated by warm washing water, so that the washing effect is improved.

  Washing water used in the washing and rinsing process through the drainage hose (12) connected to the drainage port (11) formed below the tub after washing and rinsing are completed. Is discharged to the outside by the pump (13). Then, the drum (3) is rotated again to perform the dehydration of the laundry.

  On the other hand, the spring (7) installed between the upper part of the cabinet (1) and the tab (2) supports the tab (2), and between the lower part of the cabinet (1) and the tab (2). The installed damper (8) reduces the vibration of the tab (2) during dehydration vibration. The spring (7) and the damper (8) are used in various ways such as a washing motor (6) attached to the tab (2) in order to stably maintain the balance of the tab (2) during the dehydration process. It must be arranged perpendicular to the center of gravity of the washing machine with accessories.

  As shown in FIG. 2, the counterweight (14) is installed around the entrance of the tub, and the heavier the laundry, the more effectively the vibration noise of the washing machine can be reduced.

  After the washing process is completed as described above, if the drain pump (13) is driven, the washing water in the tab (2) is drained through the drain hose (12) and the drain pump (13). Then, after opening the water supply port at the top of the tab (2) and receiving a certain amount of washing water as in the washing process, the drum (3) is rotated for several minutes to drain and repeatedly rinsed several times. Complete that. A heater (not shown) as a drying device dries the dehydrated laundry.

  After rinsing and dewatering are completed in this way, the door (9) is opened, the laundry in the drum (3) is taken out, put into a drying table, and dried.

  On the other hand, as shown in FIG. 1, the level of the washing water supplied into the tub (2) is transmitted to the water level sensing unit (15) through the pressure hose (16) connected to the drain hose (12). As a result, the water level is sensed and controlled. That is, the water supply amount in the tub is determined by the water level sensing unit (15), and the water supply device (not shown) is operated accordingly to adjust the water supply amount supplied to the tab (2).

  As shown in FIGS. 1 and 3, such a water level sensing device is installed in a drain hose (12) for draining washing water connected to the bottom surface of the tab (2), and the drain hose (12 The water level sensing part (15) is connected by a pressure hose (16) above.

  The water level sensor (15) is provided with a pressure sensor (15a) that divides the sealed space into upper and lower chambers, and the pressure hose (16) has a first end portion that communicates with the lower chamber. And a second end portion communicating with the drainage hose (12). The drain hose (12) and the pressure hose (16) penetrate the inside and communicate the tab (2) and the lower chamber of the pressure sensor (15a).

Accordingly, when washing water is supplied to the tab (2), a part of the water flows into the pressure hose (16) through the drain hose (12), and the pressure hose (16) and the pressure sensor ( Air between the lower side of 15a) is compressed. Therefore, this pressure is transmitted to the pressure sensor (15a), and the amount of wash water supplied is sensed accordingly. Such a water level detection state can be expressed as follows.
Ps = Pt + ρgh−Patm

  Here, Ps is a pressure applied to the lower side of the pressure sensor, Pt is a pressure existing in the tub, and Patm is an atmospheric pressure applied to the upper side of the pressure sensor. Ρ is the density of the washing water, g is the acceleration of gravity, and h is the height of the washing water. Therefore, ρgh represents the head pressure of the washing water. Since the pressure in the tub is usually atmospheric pressure, the water head pressure in the tub can be detected by the pressure sensor.

However, the conventional drum washing machine has the following problems.
First, the cabinet (1), the tab (2), and the drum (3) are separated and installed in a horizontal structure to store water in the tab (2) during washing. There is a problem that the amount of use increases due to unnecessary water supply.

  Second, as shown in FIGS. 1 and 2, the gap (A) between the outer surface of the drum (3) and the inner surface of the tab (2), the inner surface of the cabinet (1) and the tab ( Since there is a gap (B) between the outer surface and the outer surface of 2), there is a problem that the size of the drum washing machine becomes larger than the washing capacity.

  Third, the horizontal structure requires a space for receiving the rib (15) for securing the rigidity of the tab (2) during dehydration, which increases the cabinet size.

  Fourth, since the water level is detected using a pressure sensor, there is a problem that the components of the pressure sensing unit are complicated.

  SUMMARY OF THE INVENTION A first object of the present invention is to provide a monotab drum washing machine having tabs integrally formed in a cabinet by arranging the tabs and drums to be inclined in the cabinet.

  A second object of the present invention is to provide a monotab drum washing machine in which washing water is supplied only to an inclined drum in a cabinet.

  The third object of the present invention is to allow washing water to flow out through an outlet formed on the front side of the drum when the washing water supplied to the drum is above a certain level or by centrifugal force during washing and dewatering strokes. The present invention is to provide a monotab drum washing machine.

  A fourth object of the present invention is to provide a monotab drum washing machine and a washing control method thereof, in which water supply is controlled by electrical connection when washing water flows out from an outlet on the front side of the drum. is there.

  A fifth object of the present invention is to provide a monotab drum washing machine and a washing control method therefor, in which washing water is supplied only to an inclined drum so that washing and dewatering processes can be performed when the water supply is completed.

  A monotab drum washing machine according to an embodiment of the present invention is provided with a cabinet in which a door is installed in front and an inclined tab is integrally formed, and water is installed and inclined in the tab. A drum that performs washing and dewatering processes with washing water, a drum shaft that is axially connected to the rear of the drum and transmits the driving force of the motor to the drum, and is connected to the cabinet outside the tab to support the drum. And upper and lower buffer support means.

  Preferably, a plurality of outlets processed at appropriate intervals are provided around the front side of the drum so that the washing water supplied to the drum flows out by the centrifugal force of the drum during washing and dewatering processes.

  Preferably, a fluid chamber for reducing vibration of the drum is provided around the front surface of the drum.

  Preferably, at the rear of the drum, a bearing for supporting a drum shaft connected to a motor, and a bellows type seal so that water does not enter the position of the bearing from between the tab and the drum shaft. And a member.

  Preferably, the buffer support means includes a plurality of U frames attached in an X shape so as to be movable relative to the tabs behind the tabs so as to support the motor and the drum shaft, and the U frames. And a spring and a damper installed between each end of the cabinet and the cabinet.

  Desirably, the drums and tabs in the cabinet are inclined at about 20 to 30 degrees with respect to the ground.

  A monotab drum washing machine according to another embodiment of the present invention includes a cabinet in which a door is installed in front and an inclined tab is integrally formed therein, and is installed and supplied with water so as to be inclined in the tab. The drum that performs washing and dewatering processes with the wash water and the washing water supplied to the drums are processed at appropriate intervals around the front side of the drum so as to flow out by the centrifugal force of the drum during the washing and dewatering processes. A plurality of outlets, a drum shaft that is axially connected to the rear of the drum and transmits the driving force of the motor to the drum, and an upper side and a lower side that are vertically connected to the cabinet outside the tab and support the drum A buffer support means and an electric power installed in the drain outlet on the lower side of the tub and electrically energized by washing water flowing to the drain outlet through the outlet and through the flow path between the tab and the drum. And the sensor, to determine the wash water level in the drum in electrical conduction by the electrode sensor, and having a control unit for controlling the washing process.

  According to another embodiment of the present invention, the washing control method of the monotab drum washing machine includes the step of supplying water only to the inclined drum, and the washing water supplied to the drum is positioned above the drum with the water level exceeding a certain level. When overflowing through the outlet, the water level is sensed by the electrode sensor electrically energized by the wash water flowing through the flow path between the drum and the tub, and the controller detects whether the electrode sensor is energized or not. And a step of proceeding with the washing process.

The monotab drum washing machine according to the present invention described above has the following effects.
First, the amount of water supply is minimized by forming the tabs integrally in the cabinet so that the tabs and drums are inclined and only the inclined drums are supplied without supplying water to the tabs. This has the effect of shortening the washing time.

  Second, by integrating the tab and the cabinet, the capacity can be maximized if the size is the same, and the tab can be designed to be lightweight. And since a detergent bubble does not generate | occur | produce in the space between a drum and a tab, there exists an effect which can use a general detergent.

Third, the count weight can be omitted and replaced with a liquid chamber.
Fourth, since it is an integrated type, there is an effect that it is not necessary to install a gasket between the tab and the door.
Fifth, it is convenient to put in the laundry with the inclined structure, and the door can be opened and closed even while washing is in progress.

The monotab drum washing machine of the present invention will be described as follows with reference to FIGS.
Referring to FIGS. 4 to 7, a cabinet (101) having a door (108) attached to the front and an inwardly inclined tab (102), and an inclined installation in the tab (102). The drum (103) that performs washing and dewatering while holding washing water, the drum shaft (104) connected to the rear side of the drum, and the periphery of the front and rear sides of the drum shaft (104) A bearing (105) to be supported, a motor (107) connected to the drum shaft (104), and a bent movably attached to the rear side of the cabinet (101) and the tab (102) A spring (111) and a damper (112) attached between the U-shaped frame (110), and an outlet (131) formed with a plurality at predetermined intervals around the front side of the drum (103) for drainage And a fluid chamber (13) filled with a certain amount of fluid for reducing vibration noise around the front side of the drum. 2) and a drainage port (133) formed in the bottom of the tab for discharging the washing water flowing out through the outflow port (131) to the outside.

  The monotab drum washing machine according to the present invention will be described as follows with reference to the accompanying drawings.

  4 to 7, a tab (102) and a drum (103) are installed inside the cabinet (101) so as to be inclined at a predetermined angle (about 20 to 30 degrees). A door (108) for opening and closing the laundry inlet having an inclined structure is installed.

  The tab (102) has a cylindrical shape and is integrally disposed in the cabinet (101) with an inclined structure. The drum (103) has a cylindrical shape, and is installed in the tab at a predetermined interval with the same inclination angle as the tab (102).

  Here, the tab (102) and the drum (103) are spatially separated from each other, and the washing water supplied to the drum (103) does not flow into the tab (102) but is stored only in the drum (103). It becomes like this.

  The door (108) is installed on an inclined surface formed by an inclined inclination angle of the tab (102) and the drum (103) between the front surface and the upper surface of the cabinet (101). Since the door 108 is installed in an inclined structure, it is convenient to load laundry. As another example, the door installation structure may be modified into various structures according to user convenience, structural safety, and efficiency.

  The tab (102) is integrally installed in the cabinet (101), so that a gasket installed between the door (108) and the tab (102) is unnecessary as in the existing case. Further, the washing water is not stored in the tab (102) but is stored only in the drum (102), and the level of the stored washing water is a height generated by the inclined angle of the drum (103).

  Here, the tilt angle of the door (108), the tab (102) and the drum (103) is about 20 to 30 degrees with respect to the ground, and the structure is almost the same. As an example, in order to make it easier for the user to load the laundry, the inclination angle can be changed under conditions where washing is possible.

  As shown in FIG. 6, the washing water stored only in the drum (103) flows along the inner surface (101a) of the tab through the outlet (131) and reaches the bottom of the tab when the water level exceeds a certain level. It is discharged from the drain (133). As shown in FIG. 7, a number of such outlets (131) are arranged at appropriate intervals along the periphery of the front side of the tab (102) to communicate between the drum (103) and the tab (103). It becomes a drainage passage.

  As shown in FIG. 7, a fluid chamber (132) is formed on the front end surface of the drum (103), and the fluid is filled in the fluid chamber (132) to reduce vibration of the tab (102) during dehydration. Let

  On the other hand, as shown in FIGS. 5 and 6, the drum (103) is connected to the rear of the drum (103) between the motor (107) and the drum (103) to transmit the driving force of the motor (107). A shaft (104) is installed, and bearings (105) are installed around the front and rear sides of the drum shaft (104) to support the drum shaft (104). Also, a bellows-shaped seal member 106 for sealing is formed between the front bearing 105 of the drum 103 and the tab 102. That is, the seal member (106) prevents washing water from flowing into the bearing position via the lower portion of the tab.

  A plurality of U-shaped frames (110) coupled in an X shape are attached to the rear side of the tab (102) mounted in the cabinet, and connect the U-shaped frame (110) and the upper part of the cabinet. And a plurality of dampers (112) connecting the U-shaped frame (110) and the lower part of the cabinet to reduce vibration of the tab (102) during dehydration. . That is, since the suspension system is not directly connected to the tab (102), it is possible to reduce the weight and secure a space by omitting the rib on the rear side of the tab.

The operation of the monotab drum washing machine will be briefly described as follows.
4 to 7, the door (108) installed with an inclined surface in front of the cabinet (101) is opened and the laundry is put into the drum (103). ) Is closed, put an appropriate amount of detergent for the weight of the laundry into the detergent box and open the water supply opening, and the drum installed so that the washing water and the detergent are inclined in the cabinet (101) 103).

  At this time, as shown in FIG. 8, the washing water that has flowed into the drum (11) is supplied to the water level inclined with respect to the drum, and if it exceeds that, the water flows out through the front outlet (131). The washed-out washing water flows downward along the space between the drum (103) and the tab (102), that is, along the inner surface (101a) of the tab, and from the drain (133) at the lower end of the tab (102). Discharged. That is, when the washing water supplied to the drum (103) overflows, it is discharged through the drain outlet (133) at the lowest position of the tab (102).

The washing water drained through the drain port (133) flows through the drain hose (134) and is discharged to the outside by the drain pump (135).
At this time, a plurality of electrode sensors (133a) installed in the drain port (133) at the lower end of the tab (102) are energized, and the energized result is electrically connected by the line (141). By transmitting to the unit (140), the control unit (140) controls to stop the water supply and perform the washing process.

  If a predetermined amount of washing water is supplied into the drum (102) through such water supply control, power is simultaneously applied to the heater below the drum (102), so that the washing water is heated to a predetermined temperature. The

  Thereafter, the motor (107) is operated, and the driving force is transmitted to the drum (103) via the drum shaft (104) and the bearing (105) to rotate the drum (103). Here, the motor (107) is installed behind the tab when it is directly connected, and is usually installed below the tab when it is belt driven.

  As the drum (103) is rotated, the laundry inside the drum (103) is lifted up by the lifter (not shown) of the drum (103) and then dropped. At this time, the laundry wets the laundry while warm washing water collected in the drum (103) flows along the inner surface of the drum (103), and the washing water that has flowed into the lifter of the drum (103) has a hole in its upper end. As the laundry is wetted as it falls through, all the laundry is wetted.

  By continuously rotating the drum (103) in this way, washing starts after the inside of the laundry is completely wetted. In such a drum washing machine, the frictional force with the laundry is increased by the lifter on the inner surface of the drum (12), and the detergent is activated by warm washing water, so that the washing effect is improved.

  After washing and rinsing are performed at the same time, after the washing and rinsing are completed, the dehydration process is performed. During the dehydration, the drum (103) that rotates at a high speed causes the washing water inside the drum to move to the front side of the drum by centrifugal force Flowing out through the outlet (131) and flowing downward along the inclined surface (101a) between the tab (102) and the drum (103), and then the drain (133) at the lower end of the tab (102) And it flows through the drainage hose (134) connected here, and is discharged | emitted outside by the drainage pump (135). At this time, the electrode sensor (133a) is in an electrically disconnected state.

  Then, after opening the water supply port at the top of the tab (102) and supplying a certain amount of washing water as in the above-described washing process, the drum (103) is rotated for several minutes to dehydrate and repeated several times to rinse. Complete. That is, after performing the washing process by water supply, the process proceeds as a dehydration process without draining.

  During such a washing and dewatering process, the rear side of the tab in the cabinet (101) is supported by a spring (111) and a damper (112) connected to each end of a plurality of U-shaped frames (110). By reducing the vibration of the tab during dehydration. Here, the base of the U-shaped frame (110) is preferably X-shaped, and each end is preferably bent to each part of the cabinet.

  In this manner, the spring (111) and the damper (112) are installed on the frame (110) outside the tab, and the tab (102) is used to maintain a stable balance of the tab (102) when performing the dewatering process. It must be placed on the vertical line of gravity of the tab (including through the center of gravity of the dub and perpendicular to the central axis of the tab) with various accessories such as the motor (107) attached to it. At the same time, it is possible to reduce the weight of the washing machine and secure a space by omitting the rib on the rear side of the tab (102).

In addition, the fluid chamber (132) installed on the front surface of the drum (103) can effectively reduce the vibration noise of the washing machine as the mass of the laundry is heavier.
After rinsing and dewatering are completed in this way, the door (18) is opened, the laundry inside the drum (12) is taken out, and placed in a drying table to be dried.

  By constructing the tab (102) so as to be inclined integrally with the cabinet (101), the internal structure for determining the washing capacity can be made larger than that of a washing machine of the same size, and the inclined drum (103 ), It is convenient to put in laundry, and the door can be opened and closed during washing. In addition, washing time can be minimized while minimizing the amount of washing water stored. Since no detergent bubbles are present in the space between the tab and the drum, a general detergent can be used.

FIG. 9 is a flowchart showing a washing control method of the monotab drum washing machine according to the embodiment of the present invention.
Referring to FIG. 9, the washing water is supplied only to the inclined drum (S101), and the washing water overflows when the supplied washing water is above a certain level (inclined level). At this time, if washing water overflowing through the outlet on the front side of the drum is discharged from the drain along the inclined surface inside the tub, the electrode sensor installed inside the drain is energized. At this time, the control unit confirms whether or not the electrode sensor is energized (S103) .If the electrode sensor is energized as a result of the confirmation, water supply to the drum is shut off (S105), and the washing process is performed (S107). ). After the washing process, the dehydration process is performed without the draining process (S109).

  Thus, by configuring the tab (102) to incline integrally within the cabinet (101), the size of the internal components and the like can be increased compared to the same washing machine, and the inclined drum The structure that only stores water makes it convenient to put in laundry and opens and closes the door during washing. In addition, the amount of washing water can be minimized while washing time can be minimized. Since no detergent bubbles are present in the space between the tab and the drum, a general detergent can be used.

  In addition, the structure is such that water is supplied only into the drum (103), and an electrode sensor (133a) is provided at the drain outlet at the lower end of the tab, and the water level can be adjusted by sensing the water level by electrical energization.

It is a cross-sectional side view of the conventional drum washing machine. It is a perspective view from the front of the conventional drum washing machine. It is a figure showing the water level detection apparatus of the conventional drum washing machine. 1 is a cross-sectional side view of a monotab drum washing machine according to an embodiment of the present invention. 1 is a perspective view of a monotab drum washing machine according to an embodiment of the present invention. FIG. 1 is a cross-sectional side view of a monotab drum washing machine according to an embodiment of the present invention. FIG. 3 is a view illustrating a liquid chamber and an outlet of a monotab drum washing machine according to an embodiment of the present invention. 1 is a configuration diagram illustrating a water level sensing device of a monotab drum washing machine according to an embodiment of the present invention. It is a flowchart which shows the washing control method of the monotab drum washing machine by the Example of this invention.

Explanation of symbols

101 cabinet
102 tabs
103 drums
104 drum shaft
105 Bearing
106 Seal member
107 motor
108 door
110 U-shaped frame
111 Spring
112 damper
131 outlet
132 Fluid chamber
133 Drain port
133a electrode sensor
134 Drain hose
135 Drainage pump
140 Control unit

Claims (8)

A cabinet in which a door is installed in the front and an inclined tab is integrally formed in the interior;
A drum installed to be inclined inside the tub and performing a washing and dewatering process with the supplied wash water;
A drum shaft connected to the rear of the drum and transmitting the driving force of the motor to the drum;
Upper and lower buffer support means connected to the cabinet outside the tab to support the drum;
A number of outlets (131) processed around the front side of the drum so that the washing water in the drum flows out during a washing or dewatering process;
A monotab drum washing machine comprising: The monotab drum washing machine according to claim 1, further comprising an electrode sensor that is installed at a drain outlet at a lower end of the tab and detects washing water discharged from the drain outlet .   The monotab drum washing machine according to claim 1, further comprising a fluid chamber for reducing vibration of the drum around the front side of the drum.   A bearing for supporting a drum shaft connected to a motor at the rear of the drum, and a bellows-type seal member so that water does not enter the position of the bearing from between the tab and the drum shaft; The monotab drum washing machine according to claim 1, wherein   The buffer support means includes a plurality of U frames attached in an X shape so as to be movable relative to the tabs behind the tabs so as to support the motor and the drum shaft, The monotab drum washing machine according to claim 1, further comprising a spring and a damper disposed between each end and the cabinet.   The monotab drum washing machine of claim 1, wherein the drum and the tab in the cabinet are inclined at about 20 to 30 degrees with respect to the ground. A cabinet in which a door is installed in the front and an inclined tab is integrally formed in the interior;
A drum installed to be inclined inside the tub and performing a washing and dewatering process with the supplied wash water;
A number of outlets processed at appropriate intervals on the front peripheral surface of the drum so that the washing water supplied to the drum flows out by the centrifugal force of the drum during washing and dewatering steps;
A drum shaft connected to the rear of the drum and transmitting the driving force of the motor to the drum;
Upper and lower buffer support means connected to the cabinet vertically outside the tab to support the drum;
An electrode sensor installed at a drain outlet at a lower end of the tub and electrically energized by washing water discharged from the drain outlet through a flow path between the tub and the drum through the outlet;
A monotab drum washing machine comprising: a control unit that determines a washing water level in the drum by electrical energization by the electrode sensor and controls a washing process. Supplying water only into the inclined drum;
An electrode that is electrically energized by the wash water flowing through the flow path between the drum and the tub when the wash water supplied to the drum overflows through an outlet located on the front side of the drum when the wash water reaches a certain level or higher. Detecting the water level with a sensor;
A method for controlling the washing of a monotab drum washing machine, comprising: a step of sensing whether or not the electrode sensor is energized to stop water supply and proceed with a washing process.

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