JP2010207311A - Drum-type washing machine - Google Patents

Abstract

[PROBLEMS] Before a washing agent introduced at the start of washing is mixed with water in a water tank, it directly falls into the drain outlet as a lump of detergent and is discharged without fulfilling its function as a detergent while entering the drain cock. It had a problem that
A circulation path 47 is provided which extends from an opening 45 provided on the back surface of a water tank 19 and communicates with a drain cock 37 provided downstream of a drain outlet, and after supplying water for a predetermined time, it rotates. Water supply is continued while rotating the drum in a certain direction at a predetermined rotation speed higher than the stirring rotation speed of washing, and then the detergent is put into the cylinder tank, thereby preventing the accumulation of detergent in the drain cock.
[Selection] Figure 2

Description

  The present invention relates to a drum-type washing machine for washing clothes in a rotating drum.

  Conventionally, this type of drum type washing machine is configured as shown in FIG. The configuration will be described below.

  As shown in FIG. 7, the drum 1 is provided with a large number of water passage holes 2 on the entire outer periphery thereof, and is rotatably disposed in the water tank 3. One end of the rotating shaft 4 is fixed to the rotation center of the drum 1, and a drum pulley 5 is fixed to the other end of the rotating shaft 4. The motor 6 is connected to the drum pulley 5 by a belt 7 and rotationally drives the drum 1. A lid 8 is provided at the opening of the drum 1 so as to be freely opened and closed. The water tank 3 is suspended from the washing machine main body 9 by a spring body 10, and is supported by an anti-vibration damper 11 so that vibration during dehydration is not transmitted to the washing machine main body 9, and a weight 12 that reduces vibration during dehydration. Is provided. A drain port 117 is provided in the lower part of the water tank 3. The water supply valve 13 supplies the washing water into the water tank 3, and the drainage pump 14 discharges the washing water in the water tank 3. The heater 15 heats the washing water in the water tank 3. The control device 16 controls operations of the motor 6, the water supply valve 13, the drainage pump 14, the heater 15, and the like, and sequentially controls a series of steps such as washing, rinsing, and dehydration (see, for example, Patent Document 1).

  The operation of the drum type washing machine configured as described above will be described below.

When the lid 8 is opened and the laundry is put into the drum 1 and the operation is started, in the washing process, the water supply valve 13 is driven to supply the washing water into the water tank 3. When the water level of the washing water reaches a predetermined water level, the driving of the water supply valve 13 is stopped and the water supply is terminated. Thereafter, the drum 1 is driven to rotate at a low speed by the motor 6, and the laundry in the drum 1 is lifted and dropped onto the water surface. Thus, the washing process proceeds. After performing the washing process for a predetermined time, the washing water in the water tank 3 is stored in the drainage pump 14 via the drainage port 117, drained by driving the drainage pump 14, performing intermediate dehydration, and the subsequent rinsing process Do. In the rinsing process, the same operation as in the washing process is performed. In the dewatering process, the drum 1 is rotationally driven at a high speed, and the laundry is dewatered by centrifugation.
Japanese Patent Laid-Open No. 10-201988

  Originally, in the washing process, immediately after the start of washing, the detergent tank (not shown) is put into the water tank 3 by using water supplied from the water supply valve 13 or manually or by other means. When the washing water comes into contact with the soiled portion of the laundry, the detergent adheres to the soil and enhances the cleaning effect.

  However, in the conventional structure as described above, before the detergent introduced at the start of washing is completely mixed with water in the water tank 3, it directly falls into the drain port 17 as a lump of detergent and enters the drain cock. It has a problem that it is discharged without fulfilling its function as a detergent.

The present invention solves the above-described conventional problems. In the washing water supply process, after supplying water to the drain cock first, the number of revolutions of the drum 1 is increased, and then the detergent is received in the cylinder layer. This makes it difficult for the detergent to accumulate in the drain cock from the drain port 117, and even if the detergent enters from the drain port 117 and accumulates in the drain cock, the detergent can easily flow back into the water tank 3 again. An object of the present invention is to provide a drum type washing machine capable of enhancing the solubility of the detergent, improving the function as a detergent, and enhancing the cleaning effect.

  A rotating drum that is rotatably arranged in the aquarium and whose rotation center axis is horizontal or inclined from the horizontal, a drain opening provided at the bottom of the aquarium, a motor that rotationally drives the rotating drum, and a water tank A water supply means for supplying the wash water, a drain means for draining the wash water in the aquarium, and a circulation extending from an opening provided on the back surface of the aquarium and communicating with a drain cock provided downstream of the drain outlet And a control means for controlling the motor, the water supply means, the drainage means, etc. to execute each process such as washing, rinsing, dehydration, etc., and after supplying water for a predetermined time, the rotating drum is stirred and rotated for washing. The water supply is continued while rotating in a certain direction at a predetermined rotation number higher than the number, and then the detergent is received in the cylinder tank.

  As a result, during the washing water supply process, the water supply is first accumulated on the side of the drain cock, and after the rotation of the rotating drum is increased and the flow of water licks the surface of the drain cock at the entrance surface, the detergent is removed. Therefore, even if it accumulates on the drain cock, cleaning water enters the drain cock through the circulation path from the opening on the back of the rotating drum. Detergent is rolled up by the washing water that has entered. The detergent flows back into the water tank again by being rolled up by the washing water from the drain cock, the washing water in the water tank and the drum is dissolved by the rotation of the rotating drum, and the detergent function is exhibited by contacting the laundry, A drum-type washing machine capable of enhancing the cleaning effect is provided.

  In the drum-type washing machine of the present invention, during the washing water supply process, the water is first stored in the drain cock, and the detergent introduced into the water tank after the rotation of the rotating drum has been raised enters the water outlet. In addition to making it difficult for detergent to enter the drain cock side and the circulation path side, even if it accumulates in the drain cock, the detergent flows back into the water tank again, and the rotation of the rotating drum increases the solubility of the washing water in the water tank and drum. Thus, the function as a detergent can be exhibited and the cleaning effect can be enhanced.

  A first aspect of the present invention is a rotary drum that is rotatably arranged in a water tank and whose rotation center axis is horizontal or inclined from the horizontal, a drain port provided at the bottom of the water tank, and a motor that rotationally drives the rotary drum And a water supply means for supplying washing water into the aquarium, a drain means for draining the washing water in the aquarium, and an opening provided on the back surface of the aquarium and provided downstream of the drain outlet A circulation path communicating with the drain cock, and a control means for controlling the motor, the water supply means, the drainage means, etc. to execute each step of washing, rinsing, dewatering, etc. By continuing the water supply while rotating the drum in a fixed direction at a predetermined rotation speed higher than the stirring rotation speed of washing, and then putting the detergent into the water tank, the water supply to the drain cock side is first performed during the washing water supply process. Reservoir, rotating drum The detergent is put into the drain cock and the circulation path side by making the detergent after the rotation of the pump is raised, and even if it accumulates on the drain cock, the detergent is allowed to flow back into the water tank again and the rotating drum rotates. Thus, it is possible to enhance the solubility of the washing water in the water tank and the drum, to exhibit the function as a detergent, and to enhance the washing effect.

In the second aspect of the invention, in particular, in the washing water supply process of the first aspect of the invention, the water supply is performed for a predetermined time while the rotary drum is driven to rotate in a predetermined direction at a predetermined rotation number, and then the rotation number of the rotary drum is increased. The water supply is continued, and then the detergent is put into the rotating drum to prevent the laundry in the rotating drum from getting wet when the water is supplied for the first time. The start-up can be improved, and after increasing the number of rotations with a high probability, the detergent is put into the water tank, so that the solubility of the washing water in the drum can be improved more reliably and the function as a detergent can be demonstrated. The cleaning effect can be enhanced.

  In the third invention, in particular, in the washing water supply process of the first or second invention, after the predetermined time has elapsed after the detergent is added, the rotational speed of the rotary drum is further increased to drive the drain cock side. In addition to making it difficult for the detergent to enter the circulation path, the detergent is allowed to flow back into the water tank again even if it accumulates in the drain cock. In addition, the rotation of the rotating drum increases the solubility of the washing water in the water tank and the rotating drum, and the detergent liquid in the water tank is rotated and stirred at a high speed to generate high-concentration foam, thereby washing the laundry in the rotating drum. The detergent foam of high concentration can easily penetrate into the laundry, exhibit the function as a detergent, and enhance the cleaning effect.

  In the fourth aspect of the invention, in particular, in the washing water supply process of any one of the first to third aspects of the invention, water is supplied while rotating the rotating drum in a direction opposite to the direction in which the water flows from the water supply path to the drain outlet. Therefore, the water in the detergent tank is prevented from flowing directly into the drain outlet, making it difficult for the detergent to enter the drain cock and the circulation path, and even if it accumulates in the drain cock. It can be rolled up, and the solubility of the washing water in the drum can be increased, the function as a detergent can be exhibited, and the washing effect can be enhanced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a side sectional view of a drum type washing machine according to an embodiment of the present invention, FIG. 2 is a rear view of the water tank, FIG. 3 is a front view of the drain cock, and FIG. 4 is a first view of the present invention. It is a principal part operation | movement flowchart of the drum type washing machine of embodiment.

  In FIG. 1, the rotating drum 17 is formed in a bottomed cylindrical shape, and a large number of water passage holes 18 are provided on the entire surface of the outer peripheral portion, and are rotatably disposed in a water tank 19. A rotation axis (rotation center axis) 20 is provided in the inclination direction at the rotation center of the rotary drum 17, and the axial center direction of the rotation drum 17 is inclined downward from the front side toward the back side. A motor 21 attached to the rear surface of the water tank 19 is connected to the rotating shaft 20, and the rotating drum 17 is driven to rotate in the forward and reverse directions by the motor 21. Several protruding plates 22 are provided on the inner wall surface of the rotating drum 17.

  An opening 24 provided on the upward inclined surface of the main body 23 on the front side of the aquarium 19 is covered with a lid 25 so as to be freely opened and closed. By opening the lid 25, the opening 24, the aquarium clothing entrance 26 and the rotary drum clothing entrance 27, the laundry is put into the rotary drum 17 so that the laundry can be taken out from the rotary drum 17. Since the lid body 25 is provided on the upwardly inclined surface, the user can reduce the degree of bending his / her waist when putting in and out the laundry.

  The water tank 19 is suspended from the main body 23 by a spring body 28 and a damper 29 so as to be swingable. A concave drainage groove 30 that is long in the direction of the rotary shaft 20 is provided on the inner bottom of the water tank 19. A heater 50 is disposed in the drainage groove 30. A drain outlet 31 is provided near the rear side of the bottom of the drain groove 30, a drain cock 37 is connected to the drain outlet 31, a drain path 32 is connected to the outlet side of the drain cock 37, and the drain path 32 The other end is connected to a drain valve (drainage means) 33 so that the washing water in the water tank 19 is drained. The first water supply valve (water supply means) 34 a supplies the wash water directly into the washing tub through the water supply path 36. The second water supply valve (water supply means) 34 b supplies washing water into the water tank 19 through the detergent case 35 and the water supply path 38. Further, the water level detection means 48 is provided for detecting the water level in the water tank 19.

The control device 39 has a control means 40 composed of a microcomputer, and controls the operations of the motor 21, drain valve (DV) 33, water supply valves (FV) 34a, 34b, etc. via the power switching means, washing, A series of steps of rinsing, dehydration and drying are sequentially controlled.

  The control means 40 inputs information from the input setting means for setting the driving course and the like, and displays it on the display means based on the information to notify the user. The storage means stores data necessary for control by the control means 40.

  In FIG. 2, a back surface opening 45 is provided on the back surface of the water tank 19, and the back surface opening 45 of this water tank and the opening 46 provided in the drain cock 37 shown in FIGS. 3 and 4 are connected to the circulation path 47. It is configured so that water or air can circulate.

  The operation of the above configuration will be described with reference to the flowchart of FIG.

  When the user opens the door body 25 and puts the laundry into the rotary drum 17 and closes the door body 25 again, the operation starts in step 100. After the power switch 45f is turned on in step 101, the course is started in step 102. The process is set, and the changed contents are displayed on the operation panel in step 103. When the operation is started by pressing the start button in step 104, the door 25 of the washing machine is locked in step 105.

  In the washing water supply process, when the first water supply means 34a is turned on in step 106, the wash water is supplied, and in step 107, the first water supply path 36 is supplied and supplied into the washing tub. When a predetermined water supply level S1 (for example, 0 mm; reset water level) is detected in Step 108, the process proceeds to Step 109 and the first water supply means 34a is stopped. If the water supply level S1 has not been reached, the process returns to step 107 and water supply is continued. In step 110, the motor 21 is driven to rotate the rotary drum 17. In step 111, it is confirmed whether the rotational speed of the rotary drum 17 has reached a predetermined rotational speed R2 (for example, 85 r / min). If not, the process returns to step 110 to continue the rotation and increase the rotation speed. In step 112, the second water supply means 34b is turned on to supply washing water. In step 113, the washing water passes through the water supply path, and in the middle step 114, passes through the detergent case 35. In step 115, the washing water is supplied into the receiving tank together with the detergent. In this way, the detergent flows into the water tank. When a predetermined water level S2 (for example, 60 mm) is detected in step 116, the process proceeds to step 117, and the second water supply means 34b is stopped. If the predetermined water level S2 has not been reached, the flow returns to step 112 to continue water supply. In step 118, it is confirmed whether or not the predetermined rotation time T1 has been reached. If it has, the rotation of the rotary drum 17 is stopped in step 119, and the process proceeds to the next step. If the predetermined rotation time T1 has not been reached, the process returns to step 117 to continue the rotation.

  By this operation, the contained washing water is agitated, and the detergent gradually dissolves in the washing water, and at the same time, the washing water collides with the side wall (not shown) of the drainage groove 30. The collision generates washing foam having a high concentration of detergent components, and the washing foam gradually fills between the rotating drum 17 and the water tank 19. After that, when it becomes full, the washing foam wraps around in front of the rotary drum 17 and the water tub 19, enters the rotary drum 17 through the rotary drum clothing entrance 27, and soaks into the laundry therein. At this time, most of the detergent that has reached the drain groove 30 is dissolved by stirring, but when the amount of detergent is large, the undissolved detergent falls into the drain cock 37 from the drain port 31 without being dissolved in the washing water, and is accumulated. There are things to do.

However, as described above, water supply is continued while rotating the rotating drum 17 in a predetermined direction at a predetermined rotation speed R2 higher than the stirring rotation speed of washing, and then the detergent is put into the water tank 19 to thereby supply the washing water. At this time, water is first stored in the drain cock 37 side and the rotation of the rotary drum 17 is increased, and then the detergent is added, thereby making it difficult for the detergent to enter the drain cock 37 side and the circulation path 47 side. Even if it accumulates in 37, the detergent is again added to the water tank 19.
The washing water in the water tank 19 and the rotating drum 17 is enhanced by the rotation of the rotating drum 17 and the function as a detergent can be exhibited to enhance the cleaning effect.

(Embodiment 2)
FIG. 5 is a main part operation flowchart of the drum type washing machine according to the second embodiment of the present invention. The longitudinal cross-sectional view of this Embodiment 2 and the rear view of a water tank are the same structures as Embodiment 1, and are demonstrated using FIG.1, FIG.2 and FIG.3.

  The control means 40 performs water supply for a predetermined time while rotating the rotary drum 17 in a predetermined direction at a predetermined rotation speed, and then continues the water supply by increasing the rotation speed of the rotary drum 17. It is configured to be put in. Other configurations are the same as those of the first embodiment.

  In the above configuration, the operation will be described with reference to FIG. Note that the same parts as those in Embodiment 1 are omitted.

  In the washing water supply process, the motor is driven in Step 106 to rotate the rotating drum 17. In step 107, it is confirmed whether or not the rotational speed of the rotary drum has reached a predetermined rotational speed R1 (for example, 45 r / min). If not, the process returns to step 106 to continue the rotation and increase the rotational speed. When the first water supply means 34a is turned on in step 108, the washing water is supplied, and in step 109, the washing water is supplied through the first water supply path 36. When a predetermined water supply level S1 (for example, 0 mm; reset water level) is detected in step 110, the process proceeds to step 111 and the first water supply means 34a is stopped. If the water supply level S1 has not been reached, the process returns to step 107 and water supply is continued. In step 112, the rotational speed of the rotary drum 17 is increased. In step 113, it is confirmed whether the rotational speed of the rotary drum 17 has reached a predetermined rotational speed R2 (for example, 85 r / min). If not, the process returns to step 113 to continue the rotation and further increase the rotation speed. In step 114, the second water supply means 34b is turned on to supply washing water. In step 115, the washing water passes through the water supply path 37a, passes through the detergent case 35 in the middle step 116, and is supplied into the receiving tank together with the detergent in step 117. In this way, the detergent flows into the water tank. When a predetermined water level S2 (for example, 60 mm) is detected in step 118, the process proceeds to step 119 to stop the second water supply means 34b. If the predetermined water level S2 has not been reached, the process returns to step 114 to continue water supply. In step 120, it is confirmed whether or not the predetermined rotation time T1 has been reached.

  As described above, the water supply is performed for a predetermined time while the rotary drum 17 is rotationally driven at a predetermined rotation speed R1 in a certain direction, and then the rotation speed of the rotary drum 17 is increased to continue the water supply. By putting it inside, the laundry in the rotating drum 17 can be prevented from getting wet when the water is supplied for the first time, and then the rotation can be well balanced when the number of rotations is increased. The detergent can be put into the water tank 19 after increasing the number of revolutions, and the solubility of the washing water in the rotating drum 17 can be more reliably improved, the function as a detergent can be exhibited, and the washing effect can be enhanced. it can.

(Embodiment 3)
FIG. 6 is an operation flowchart of the main part of the drum type washing machine according to the third embodiment of the present invention. The longitudinal cross-sectional view of this Embodiment 3 and the rear view of a water tank are the same structures as Embodiment 1 and Embodiment 2, and are demonstrated using FIG.1, FIG.2 and FIG.3.

In the washing water supply process of the first or second invention, the control means 40 is configured to be driven by further increasing the number of rotations of the rotating drum after a predetermined time has elapsed since the detergent was added. Other configurations are the same as those in the first and second embodiments.

  In the above configuration, the operation will be described with reference to FIG. Note that the same portions as those in the first and second embodiments are omitted.

  In the washing water supply process, after the detergent is put into the water tank, the rotational speed of the rotating drum 17 is increased in step 120. In step 121, it is confirmed whether or not the rotational speed of the rotating drum 17 has reached a predetermined rotational speed R3 (for example, 120 r / min). If the predetermined rotational speed R3 (for example, 120 r / min) has not been reached, the process returns to step 120 to further increase the rotational speed.

  In step 122, it is confirmed whether or not the rotation time of the rotating drum has reached a predetermined rotating time T1, and if so, the rotating drum 17 is stopped in step 123 and the process proceeds to the next step. If not, the process returns to step 121 to continue the rotation.

  As described above, after a predetermined time has elapsed since the detergent was added, the rotational drum 17 is further driven to increase the rotational speed, thereby making it more difficult for the detergent to enter the drain cock 37 side and the circulation path 47 side. Even if it accumulates in the water, the detergent flows back into the water tank 19 again. Further, the rotation of the rotating drum 17 enhances the solubility of the washing water in the water tank 19 and the rotating drum 19 and generates high-concentration bubbles by rotating and stirring the detergent solution in the water tank 19 at a high speed. 19 can be applied to the laundry, and high-concentration detergent bubbles can easily penetrate into the laundry, exhibit a function as a detergent, and enhance the cleaning effect.

(Embodiment 4)
The longitudinal cross-sectional view of this Embodiment 4 and the rear view of a water tank are the same structures as any one of Embodiment 1 to Embodiment 3, and are demonstrated using FIG.1, FIG.2 and FIG.3.

  In any one of the first to third inventions, the control means 40 supplies water while rotating the rotary drum 17 in a direction opposite to the direction in which water flows from the water supply path 36 and the water supply path 38 to the drain port 31. Like to do. Other configurations are the same as those in the first to third embodiments.

  The operation in the above configuration will be described. The same parts as those in the first to third embodiments are omitted.

  In the washing water supply process, when the water supply means 34a or 34b is turned on while rotating the rotary drum 17 and the wash water is supplied through the water supply passage 36 or 38, the water supply flows from the water supply passages 36 and 38 to the drain port 31. By supplying water while rotating the rotating drum 17 in the reverse rotation direction, the water in the detergent tank 19 prevents the detergent water from flowing directly into the drain port 31, and the drain cock 37 side and the circulation path side. In addition to making it difficult for detergent to enter the drainage cock 37, the detergent can be wound up even if it accumulates in the drain cock 37, increasing the solubility of the washing water in the drum, exerting the function as a detergent, and enhancing the washing effect it can.

  As described above, the drum type washing machine according to the present invention increases the solubility of the detergent by making it difficult for the detergent to enter the drain cock and the circulation path during washing water supply. A type washing machine can be provided.

Side sectional view of the drum-type washing machine according to Embodiment 1 of the present invention. Rear view of the water tank of the drum type washing machine Front view of drain cock of the drum type washing machine Main part operation flowchart according to Embodiment 1 Main part operation flowchart according to Embodiment 2 Main part operation flowchart according to Embodiment 3 Vertical section of a conventional drum-type washing machine

17 Rotating drum 19 Water tank 20 Rotating shaft (Rotating center shaft)
21 Motor 31 Drain port 32 Drain path 33 Drain valve 34a First water supply valve (water supply means)
34b Second water supply valve (water supply means)
35 Detergent case 36, 38 Water supply route

Claims (4)

A rotating drum that is rotatably arranged in the aquarium and whose rotation center axis is horizontal or inclined from the horizontal, a drain opening provided at the bottom of the aquarium, a motor that rotationally drives the rotating drum, and a water tank A water supply means for supplying wash water, a drain means for draining the wash water in the aquarium, and a circulation extending from an opening provided on the back surface of the aquarium and communicating with a drain cock provided downstream of the drain outlet And a control means for controlling the motor, the water supply means, the drainage means, etc. to execute each process such as washing, rinsing, dehydration, etc., and after supplying water for a predetermined time, the rotating drum is stirred and rotated for washing. A drum-type washing machine in which water supply is continued while rotating in a certain direction at a predetermined rotation number higher than the number, and then the detergent is put into the water tank. The control means performs water supply for a predetermined time while rotationally driving the rotary drum in a predetermined direction at a predetermined rotation speed, then continues to supply water by increasing the rotation speed of the rotary drum, and then throws the detergent into the water tank. Drum type washing machine. The drum-type washing machine according to claim 1 or 2, wherein the control means is driven by further increasing the number of rotations of the rotating drum after a predetermined time has elapsed after the detergent is charged. 4. The drum type washing machine according to claim 1, wherein the control unit supplies water while rotating the rotating drum in a rotation direction opposite to a direction in which the water supply flows from the water supply path to the drain outlet.