JP2005230170A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly provide a washing effect by effectively supply water to laundry in a drum. <P>SOLUTION: This drum type washing machine is so formed that when supplying water by a water supply device 14, the drum 17 normally/reversely rotates to reciprocate a water supply receiving port 22 formed of the edge part of a lid 21, adjacent to a water supply outlet 16 of the water supply device 14. This constitution can directly supply water into the drum 17, and water is made to quickly infiltrate the laundry in the drum 17 to quickly provide the washing effect. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drum type washing machine having an improved water supply structure.

  In recent years, drum-type washing machines are generally provided with a front-open type and a top-open type depending on how the laundry is put in and out. Among these, the front open type has a door on the front side and the laundry is taken in and out from the front side, and the top open type has a door (lid) on the top surface. The laundry is taken in and out.

  As for the water supply structure, for the front open type, water is transferred from the front upper part of the machine to the back of the door and divided into the inside of the drum and the inside of the water tank containing the drum. For this reason, the entire water supply is not put into the drum, and after most of the water is put into the water tank (between the drum and the water tank), the drum can be dehydrated and ventilated from the communication hole. It can be put in.

On the other hand, in the top open type, the water is transferred from the rear upper part of the machine to the back part of the drum body and into the water tank (between the drum and water tank). However, directly, only a part of the water supply enters the inside of the drum through the drum communication hole, and most of the remaining water collects at the bottom between the drum and the water tank, and then passes through the drum communication hole. It can be put inside.
JP-A-8-266777

  However, as described above, in the case where most of the water supply is put between the drum and the water tank and then put into the drum through the communication hole of the drum, the water for the laundry contained in the drum Since it takes time to soak, it is difficult to quickly obtain the washing effect, and as a result, it has been necessary to increase the stirring time, resulting in a disadvantage that the washing time becomes longer.

  The present invention has been made in view of the above-described circumstances, and therefore the object thereof is to effectively supply water to the laundry in the drum, so that the washing effect can be obtained quickly and the washing time can be shortened. To provide a drum-type washing machine.

  In order to achieve the above object, in the drum type washing machine of the present invention, firstly, a water tank, a drum disposed in the water tank, a driving device for rotationally driving the drum, and the drum are provided. A lid provided to open and close the laundry doorway in the trunk, a water supply opening formed at the edge of the lid, and a water supply device for supplying water into the water tank, When water is supplied, the drum is caused to perform a forward / reverse rotation operation in which the water supply port reciprocates in the vicinity of a water supply outlet of the water supply device (invention of claim 1).

  In the drum type washing machine of the present invention, secondly, a water tub, a drum disposed inside the water tub, a driving device for rotationally driving the drum, and a laundry doorway that the drum has in the trunk portion are provided. A water supply device comprising: a lid provided so as to open and close; a water supply receiving port that is formed at an edge of the lid and is directed in one rotation direction of the drum; and a water supply device that supplies water into the water tank. After the water supply by, the drum is rotated in the direction of the water supply receiving port (invention of claim 4).

  According to the first means (invention of claim 1), when water is supplied by the water supply device, water can be directly supplied into the drum from the water supply outlet of the water supply device through the water supply opening formed at the edge of the lid. Therefore, water can be quickly soaked into the laundry in the drum, whereby the washing effect can be obtained quickly and the washing time can be shortened. In addition, since the water supply inlet is reciprocally rotated in the vicinity of the water supply outlet of the water supply device, the drum does not need to be positioned and fixed.

  According to the second means (invention of claim 4), after the water supply by the water supply device, the water collected in the water tank (between the drum and the water tank) is formed at the edge of the lid. Through the drum. Therefore, in this case as well, water can be quickly soaked into the laundry in the drum, whereby the washing effect can be obtained quickly and the washing time can be shortened.

Hereinafter, an example (one embodiment) of the present invention will be described with reference to the drawings.
First, FIG. 2 shows the entire drum-type washing machine in a normal state, and includes a base plate 1, an outer box 2 mounted and coupled thereto, and a top cover 3 attached to the outer box 2. A shell 4 is formed. In the outer shell 4, the top cover 3 constituting the upper surface portion has a laundry entrance / exit 5 formed of, for example, a sliding front lid 6a and a rear lid 6b. The lid 6 opens and closes. Therefore, the drum type washing machine of this configuration is a top open type.

  Inside the outer shell 4, a water tank 7 is elastically supported from the base plate 1 by a plurality of sets (only two sets shown) of suspensions 8 are arranged. The water tank 7 has a cylindrical shape on the horizontal axis, and a laundry doorway 9 is formed in the upper portion of the body portion 7a. The laundry doorway 9 is a vertically pivotable one having a hinge 10 at the rear. The lid 11 is opened and closed. Further, a motor 12 and a drum lock device 13 which are driving devices for rotating the drum, which will be described later, are disposed on one outer side portion of both end plate portions in the axial direction of the water tank 7.

  In addition, a water supply device 14 is disposed in the rear upper portion of the outer shell 4. Although this water supply apparatus 14 only shows the water supply pipe 15, it has the water supply valve which is between the connection port connected to the tap of water supply, and the water supply pipe 15, and is electrically opened and closed, for example. The water supply outlet 16 at the tip of 15 is communicated with the body 7 a of the water tank 7, particularly in this case, from the rear of the laundry entrance 9 into the water tank 7.

  Further, in this case, a detergent charging case is disposed in the middle of the water supply pipe 15, and therefore, the water supply device 14 has a normal path constituted by the water supply valve-detergent charging case-water supply pipe 15. By passing through the detergent charging case, the detergent set in the detergent charging case is also poured out.

A drum 17 is rotatably disposed inside the water tank 7. The drum 17 has a cylindrical shape with a horizontal axis smaller than that of the water tank 7, and the center portions of the left and right axial end plate portions are connected to the left and right end plate portions of the water tank 7 via bearings (not shown). I support. Further, a laundry entrance / exit 18 is formed in a part (upper part in FIG. 1) of the drum portion 17a of the drum 17, and the laundry entrance / exit 18 is provided at a front lid 21a having a hinge 19 at a front portion and at a rear portion. The lid 21 is composed of a rear lid 21b having a hinge 20 so as to be opened and closed.

  Further, the drum 17 is formed with a water inlet 22 at the edge of the lid 21. Specifically, in this case, the water inlet 22 is formed by a gap between the overlapping portions of the front lid 21a and the rear lid 21b, and is indicated by an arrow X in one rotational direction of the drum 17. Oriented.

In addition, although not shown, the drum portion 17a of the drum 17 is formed with a large number of communication holes for dehydration and ventilation throughout the entire area.
Further, although not shown in the figure, a drying device for drying the laundry by dehumidifying the air in the drum 17, making it warm and returning to the drum 17 is also provided inside the outer shell 4.

  FIG. 3 shows a control device 23 which is a control means for controlling the overall operation of the drum type washing machine, and is composed of, for example, a microcomputer. The control device 23 receives various operation signals from an operation input unit 24 including various operation switches of an operation panel provided on the front side portion of the top cover 3 and detects the rotational position of the drum 17. A position detection signal is input from a position sensor 25 which is a drum position detection means provided as described above, and a water level detection signal is input from a water level sensor 26 provided to detect the water level in the water tank 7 (in the drum 17). It has come to be.

  Based on these inputs and a control program stored in advance, the control device 23 includes a display unit 27 including various display elements of the operation panel, and a drive source (for example, a geared motor) 28 of the drum lock device 13. A drive control signal is supplied to a drive circuit 34 for driving the water supply valve 29 of the water supply device 14, the motor 12, the drain valve 30, the water supply valve 31 for dehumidification of the drying device, the blower 32, and the heater 33. Yes.

Next, the operation of the above configuration will be described.
First, the state before starting the operation remains the state by the control executed when the previous operation is finished. This is because the control device 23 detects the rotational position of the drum 17 by the position sensor 25, and the rotation of the drum 17 by the motor 12 causes the laundry inlet / outlet 9 of the water tank 7 and the outer shell 4 as shown in FIG. The laundry doorway 18 of the drum 17 is stopped at a position where the laundry doorway 18 of the drum 17 is aligned with the laundry doorway 5 and the drum lock device 13 is operated to the lock execution position at that position. The drum 17 is locked at a position where the laundry entrance / exit 18 of the drum 17 is aligned with the laundry entrance / exit 9 of the water tank 7 (the laundry entrance / exit 5 of the outer shell 4).

  In this state, the lids 6, 11 and 21 are opened, and the laundry is put into the drum 17 from the laundry entrance 5 of the outer shell 4 through the laundry entrance 9 of the water tank 7 and the laundry entrance 18 of the drum 17. The lids 21, 11, 6 are closed, and the operation is started.

  When the operation is started, first, the drum 17 is moved by the motor 12 as shown in FIG. 1, and the lid 21, in particular, a matching portion thereof exceeds the water supply outlet 16 of the water supply device 14 and is near the water supply outlet 16. For example, after rotating to a substantially horizontal position (position below the water supply outlet 16) O at the rear, the motor 12 is stopped by electric braking. After that, the drum 17 is rotated from the stop position in one arrow X direction at a predetermined angle and at a predetermined rotation speed, and then from the rotation position in the opposite arrow Y direction at a predetermined angle and a predetermined angle. Rotate at rotation speed.

  In this case, the predetermined angle in the direction of the arrow X is 15 degrees, which is the minimum controllable angle of the motor 12, and the predetermined rotation speed in the same direction is 5 [rpm], which is the minimum controllable speed of the motor 12. Yes. The predetermined angle in the arrow Y direction is 30 degrees from the position rotated in the arrow X direction (15 degrees that is the minimum controllable angle of the drive device from the first stop position), and the predetermined rotational speed in the same direction. Is 5 [rpm] which is the lowest controllable speed of the motor 12.

  By repeating this in the water supply, the drum 17 is rotated forward and backward so that the water supply inlet 22 reciprocates in the vicinity of the water supply outlet 16 of the water supply device 14. The water supply is executed by opening the water supply valve 29 of the water supply device 14, whereby the water W supplied from the tap through the water supply valve 29 drains the detergent set in the detergent charging case. While flowing through the water supply pipe 15, the water supply outlet 16 is supplied into the water tank 7. Thus, the water W supplied into the water supply outlet 16 water tank 7 passes through the water supply receiving port 22 in the drum 17 which repeats the forward and reverse rotation operation in which the water supply receiving port 22 reciprocates in the vicinity of the water supply outlet 16. Supplied.

  Thus, in this configuration, when water is supplied by the water supply device 14 that supplies water to the inside of the water tank 7, the water supply receiving port 22 formed of the drum 17 at the edge of the lid 21 is the water supply outlet 16 of the water supply device 14. By performing the forward / reverse rotation operation that reciprocates in the vicinity, water can be directly supplied into the drum 17, so that the laundry in the drum 17 can be quickly soaked with water. Therefore, the washing effect can be obtained quickly, and there is no need to lengthen the stirring time, so that the washing time can be shortened. In addition, since the water supply receiving port 22 reciprocates in the vicinity of the water supply outlet 16 of the water supply device 14, the drum 17 does not need to be positioned and fixed. A structure locked by the drum lock device 13 is not required.

At this time, the rotational speed of the forward / reverse rotation operation of the drum 17 is set to the lowest controllable speed of the motor 12 as a driving device, so that the direct water supply into the drum 17 by the above-described method can be carried out without difficulty. it can.
Furthermore, the rotation angle of the forward / reverse rotation operation of the drum 17 at this time is set to the minimum controllable angle of the motor 12, so that the direct water supply into the drum 17 by the above-described method can be performed comfortably.

  Next, FIGS. 4 and 5 show the control contents in the washing process and the rinsing process after the water supply. In particular, as shown in FIG. 4, after water supply, the drum 17 is continuously rotated in the direction of the arrow X, which is the direction of the water supply receiving port 22, at a rotational speed of, for example, 50 [rpm]. Thereby, the water W accumulated in the water tank 7 (between the drum 17 and the water tank 7) can be introduced into the drum 17 through the water supply receiving port 22. Also by this, water in the laundry in the drum 17 can be quickly soaked, whereby the washing effect can be obtained quickly and the washing time can be shortened.

  As for the rotation of the drum 17 immediately after the water supply, as shown in FIG. 5, the rotation time T <b> 1 is set longer than the rotation time T <b> 2 of the subsequent drum 17. For example, the rotation time limit T1 is 30 seconds, and the rotation time limit T2 is 15 seconds. As a result, the introduction of water W into the drum 17 from the inside of the water tank 7 through the water supply inlet 22 immediately after the water supply is performed more than after that, so that the laundry in the drum 17 is more quickly soaked with water. Therefore, the washing effect can be obtained more quickly, and the washing time can be further shortened.

  Note that rotating the drum 17 in the direction of the water supply receiving port 22 after this water supply and making the rotation time period T1 immediately after the water supply longer than the subsequent rotation time period T2 of the drum is as described above. The water supply receiving port 22 supplies water while rotating in the forward and reverse directions in the vicinity of the water supply outlet 16 of the water supply device 14, and is not performed after the water supply, but a conventional top-open type drum-type laundry As with the machine, water is supplied between the water tank 7 and the drum 17 from the water supply outlet 16 of the water supply device 14 without rotating the drum 17 (in the state shown in FIG. 2). Also good. Even in this case, by the control after the water supply, the laundry in the drum 17 can be quickly soaked with water, the washing effect can be quickly obtained, and the washing time can be shortened.

Further, the water supply by the above-described method and the subsequent rotation control of the drum 17 may be performed only for one of the washing process and the rinsing process, in particular, only for the washing process.
Further, the water supply receiving port 22 of the drum 17 is configured between the lid and the body portion 17a of the drum 17 if the lid 21 is not a two-sheet configuration including the front lid 21a and the rear lid 21b. You may do it.
In addition, the present invention is not limited to the embodiments described above and shown in the drawings. For example, the presence or absence of a drying function can be appropriately changed and implemented without departing from the scope of the invention.

1 is a longitudinal side view of a water supply state showing an embodiment of the present invention. Longitudinal side view before starting operation Electrical configuration block diagram Longitudinal side view of washing process and rinsing process Time chart showing the drum rotation pattern in the washing and rinsing steps

Explanation of symbols

  In the drawings, 7 is a water tank, 12 is a motor (drive device), 14 is a water supply device, 16 is a water supply outlet, 17 is a drum, 18 is a laundry doorway, 21 is a lid, 22 is a water supply port, and 23 is a control device. Show.

Claims (5)

A tank,
A drum disposed inside the aquarium;
A driving device for rotationally driving the drum;
A lid provided so as to open and close a laundry doorway that the drum has in the body;
A water inlet formed at the edge of the lid;
A water supply device for supplying water into the water tank,
A drum-type washing machine characterized in that when the water is supplied by the water supply device, the drum is rotated forward and reversely so that the water supply port reciprocates in the vicinity of the water supply outlet of the water supply device.   2. The drum type washing machine according to claim 1, wherein the rotational speed of the forward / reverse rotation of the drum is set to the lowest controllable speed of the driving device.   2. The drum type washing machine according to claim 1, wherein the rotation angle of the forward / reverse rotation operation of the drum is a minimum controllable angle of the driving device. A tank,
A drum disposed inside the aquarium;
A driving device for rotationally driving the drum;
A lid provided so as to open and close a laundry doorway that the drum has in the body;
A water inlet that is formed at the edge of the lid and is oriented in one direction of rotation of the drum;
A water supply device for supplying water into the water tank,
A drum type washing machine characterized in that, after water supply by the water supply device, the drum is rotated in the direction of the water supply receiving port. 5. The drum type washing machine according to claim 4, wherein a rotation time period of the drum immediately after water supply is made longer than a rotation time period of the subsequent drum.

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