JP2012170693A - Drum washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum washing machine exhibiting stable washing performances.SOLUTION: A drum washing machine comprises: a filter case 83 housing a lint filter 65 for collecting lint and the like; a circulation pump 67 provided to communicate with the filter case 83; a circular passage 85 formed in a circular shape on a front inner side of a water tub 42 and communicated with the circulation pump 67; a plurality of jetting ports 70 provided on an inner peripheral side of the circular passage 85 arranged along a circumferential direction; and a water circulating system 56 for circulating washing water held in the water tub 42 by jetting the water through the jetting ports 70 into a rotary drum 43 by the circulating pump 67. Since the jetting ports 70 are formed so that those disposed in upper positions may have larger opening areas, the amounts of circulated water jetted through the respective jetting ports are substantially the same, and hence, stable washing performances may be realized.

Description

  The present invention relates to a drum type washing machine for washing laundry contained in a rotating drum.

  Conventionally, this type of drum type washing machine has improved the washing performance by discharging washing water onto the laundry. (For example, refer to Patent Document 1).

  FIG. 4 shows a longitudinal sectional view of a conventional drum-type washing machine described in Patent Document 1. As shown in FIG. In FIG. 4, a drum (washing tub) 21 is disposed in a water receiving tub (water tub) 23 so as to be rotatable in the horizontal direction. Further, an opening is provided on the front surface of the water receiving tank 23 containing the drum 21 so as to face the front opening of the drum 21, and a lid 31 is provided at the opening of the water receiving tank 23 so as to be freely opened and closed. A circulation pump 37 for sucking water from an opening provided at the bottom of the water receiving tank 23, a circulation hose 38 connected to the discharge port side of the circulation pump 37, and one end side of the circulation hose 38 are connected to each other in the drum 21. A circulation means is constituted by the discharge port 39 facing the surface. Further, a heater 36 as a heating means is disposed on the inner bottom side of the water receiving tank 23 so as to heat the water accumulated in the water receiving tank 23.

  The discharge port 39 is disposed at a position facing the front opening of the drum 21 and above the drum 21, and discharges water toward the center of the drum 21. While rotating and lifting the clothes inside and stirring and washing by tapping to drop the weight of the clothes, heated washing water is sprayed onto the clothes by the circulation pump 37 to enhance the washing effect.

JP-A-9-215893

  However, in the conventional configuration, the washing water is discharged from the upper portion, and when the clothing falls under its own weight in the drum, the washing water is applied, but when the clothing is rotating upward with the drum. Since washing water is difficult to hang, there is a problem that it is difficult to obtain a stable cleaning effect.

  The present invention solves the above-mentioned conventional problems, and by spraying water in the water tank uniformly on the clothes in the rotating drum, it is possible to obtain a stable cleaning effect in the washing process, An object of the present invention is to provide a drum type washing machine that reliably collects yarn waste and does not reduce the circulating water ejection amount.

The present invention solves the above-described conventional problems, and includes a rotating drum formed in a bottomed cylindrical shape, a water tank that rotatably includes the rotating drum, a motor that rotationally drives the rotating drum, and the water tank A filter case with a lint filter connected to a drain pipe connected to the bottom and collecting lint etc., a circulation pump arranged in communication with the filter case, and an arc shape inside the front of the water tank An annular passage formed in communication with the circulation pump, a plurality of outlets provided on the inner peripheral side of the annular passage, and washing water in the water tank is rotated from the outlet by the circulation pump. A water circulation system that is jetted into the drum and circulated; and a control unit that controls the motor, the circulation pump, and the like to control each step of washing, rinsing, dehydration, and the like. Open area It is obtained by the listening configuration.

  As a result, the amount of ejection from each ejection port can be made substantially the same, and the cleaning performance can be stabilized.

  The drum type washing machine of the present invention can achieve stable cleaning performance because the amount of jetted water from each jetting port of the circulating water is almost the same.

The longitudinal cross-sectional view of the drum type washing machine in embodiment of this invention The exploded perspective view of the main part of the drum type washing machine The principal part top view seen from the back side of the drum type washing machine Vertical section of a conventional drum-type washing machine

  A first invention includes a rotating drum formed in a bottomed cylindrical shape, a water tank that rotatably includes the rotating drum, a motor that rotationally drives the rotating drum, and a drain pipe connected to the bottom of the water tank. A filter case provided with a lint filter connected to collect lint and the like, a circulation pump arranged in communication with the filter case, an arc shape formed in an inner part of the front of the water tank, and the circulation pump; Circulating annular flow passages, a plurality of spouts provided on the inner peripheral side of the annular flow passage, and washing water in the water tank are circulated by spouting the spout from the spout into the rotary drum. By controlling the water circulation system and the motor, the circulation pump, etc., and controlling each process such as washing, rinsing, dehydration, etc., the jet nozzle has a larger opening area as it goes upward, Circulating water Since the ejection amount from each spout is substantially the same, it is possible to realize a stable cleaning performance.

  According to a second invention, in the first invention, the opening area of the spout is formed larger than the opening area of the lattice formed in the lint filter that passes when the washing water circulates through the water circulation system. It is difficult for yarn wastes or the like that have passed through the circulation side lattice to clog the ejection port, and the effect of maintaining the ejection amount from each ejection port of the circulating water substantially the same can be enhanced.

  Hereinafter, embodiments of the invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 shows a longitudinal sectional view of a drum type washing machine in an embodiment of the present invention.

  A water tub 42 is disposed inside the washing machine housing 41 so as to be swingable. A rotating drum 43 is rotatably disposed within the water tub 42. A rotation shaft (rotation center shaft) 44 is provided in the horizontal direction at the rotation center of the rotating drum 43, and a motor 45 attached to the rotation shaft 44 in the vicinity of the back side of the water tank 42 is connected via a belt 46. The rotary drum 43 is rotated by 45 in the forward and reverse directions. Several protrusion plates 47 for stirring the laundry are provided on the inner wall surface of the rotating drum 43. In addition, a large number of water passage holes 48 are provided on the entire outer periphery of the rotating drum 43.

The water tank 42, the rotating drum 43, the motor 45, and the like constitute a vibration-type water tank unit 49. The water tank unit 49 includes a plurality of spring bodies 50 from above the washing machine housing 41.
Therefore, the vibration isolating dampers 51 support the anti-vibration from the lower part of the washing machine housing 41.

  Further, the housing opening 40 provided in the washing machine housing 41 on the front side of the water tub 42 is covered with a lid 52 so that the housing 52 can be opened and closed. The lid 52 is connected to the front of the water tub 42 and the housing opening 40 with vibration isolation. It is sealed and opened through a seal packing 82 that serves as a water seal. By opening the lid 52, the laundry can be taken in and out of the rotary drum 43 through the clothing entrance 53. ing.

  In addition, this drum type washing machine has a function of automatically controlling the motor 45, the water supply system 54, the drainage system 55, and the water circulation system 56 according to the mode setting and control program to perform at least a washing process, a rinsing process, and a dehydrating process. is doing.

  The water supply system 54 includes a first water supply hose 59 or a second water supply hose by opening and closing the first electromagnetic valve 57 (first water supply means) or the second electromagnetic valve 58 (second water supply means). Water can be supplied from the water supply path 62 into the water tank 42 in a timely manner through the detergent storage 61 that passes through 60 and stores a detergent and a soft finish and stores a drawer (not shown) that can be pulled out from outside.

  The drainage system 55 is installed in the filter case 83 via the drainage pipe 64 connected to the bottom of the water tank 42 when necessary, such as at the end of the washing process or at the end of the rinsing process, by driving the drainage pump 63. After passing through a lint filter 65 that collects lint that is removable from the outside of the lower front of the washing machine housing 41 by means of a knob 84, it passes from the inside of the machine to the outside of the machine through the drainage pump 63. The drainage hose 66 can be drained.

  The water circulation system 56 circulates the water in the water tank 42 as necessary during the pre-washing process, the washing process, the rinsing process, and the like, thereby preventing the premature dissolution and bias of the detergent and activating the detergent. To improve the function of easy washing.

  The water circulation system 56 drives the circulation pump 67 to pass the washing water in the water tub 42 through the filter case 83 via the drain pipe 64, and the inflow side path 68 to the circulation pump 67 and the circulation pump 67. Then, it is fed into an annular flow path 85 formed in an arc shape inside the front portion of the water tank 42 through a discharge side path 69 from the circulation pump 67, and is circulated by a solid arrow from a jet outlet 70 facing the clothing entrance 53 of the rotary drum 43. The water is ejected radially into the rotary drum 43. Here, an injection guide plate 86 is provided on the inner surface of the front portion of the water tank 42, and serves as a guide for guiding the ejected circulating water to a predetermined direction and shape. A plurality of jet outlets 70 are provided at equal angles in the circumferential direction, and the circulating water is jetted radially from all directions of the circumference (see FIG. 3). The details around the filter case 83 will be described later with reference to FIG.

  The recess 71 formed at the bottom of the water tank 42 is provided with a hot water heater (heating means) 72 such as a sheathed heater for heating the washing water in the horizontal direction. By discharging the washing water into the rotating drum 43 as described above, the washing water is sprinkled on the laundry and the washing water is circulated again. Since the heated washing water is sprinkled on the laundry, the molecular activity of the washing water is increased and the activation of the detergent is increased, so that the washing power can be increased and washing unevenness can be reduced. In the vicinity of the hot water heater 72, a temperature detection means 73 such as a thermistor for detecting the water temperature is provided.

In addition, an air trap 74 is configured on the side wall of the outer periphery of the bottom of the outer tub 42 in communication with the drain pipe 64. The air trap 74 is provided inside the upper portion of the washing machine housing 41 by an air pipe 75, and is provided with a pressure sensor or the like. It is connected to the constructed water level detection means 76, and can detect the water level in a plurality of stages by the water pressure of the washing water supplied into the outer tub 42.

  In addition, the rear upper part of the detergent container 61 provided in the upper part of the washing machine housing 41 and the upper part of the water tank 42 are connected by a connecting hose 77, and the air in the water tank 42 is pressurized by the stroke operation operation. It plays the role of pulling out.

  In addition, vibration detection means 78 of an acceleration sensor that detects vibration of the water tank unit 49 is disposed on the rear surface of the upper surface of the water tank 42, and is not an acceleration in one direction, but front and rear (X axis direction), left and right (Y axis direction). ), Vibrations in the three axial directions (up and down (Z-axis direction)) are detected to control the operation. This is because the actual vibration of the water tank unit 49 is not necessarily limited to one direction, and is therefore detected with high accuracy using a multi-axis acceleration sensor.

  The mode such as the driving course and various functions are selected by the user by inputting to the input setting means 80 from the operation display means 79 provided at the upper front of the washing machine housing 41, and inside the upper portion of the washing machine housing 41. A control device 81 having an arranged control means (not shown) informs the user by displaying on the display means (not shown) on the operation panel 79 based on the input information.

  FIG. 2 is an exploded perspective view of the main part around the filter case of the drum type washing machine in the embodiment of the present invention.

  In FIG. 2, a drain pump 63 and a circulation pump 67 are arranged on the side of the filter case 83, and the lint filter 65 that is installed in the filter case 83 and can be removed from the outside opens upward in the installed part. A substantially U-shaped lattice-like rib portion 87 is formed. The grid-like rib portion 87 has drainage-side grid ribs 88 formed in a grid shape on the drainage pump 63 side, and circulation-side grid ribs 89 having a grid unit opening area smaller than that of the drainage-side grid ribs 88 on the circulation pump 67 side. It is formed in a shape.

  During drainage, when the drainage pump 63 is driven, the washing water that has entered the filter case 83 from the water tank 42 via the drainage pipe 64 passes through the drainage-side lattice ribs 88 formed in the lint filter 65 and drains. The water passes through the pump 63 and is drained from the drain hose 66 to the outside of the machine. Large yarn waste in the wash water is collected by the drain side lattice ribs 88, and smaller yarn waste is discharged outside the machine. .

  During circulation of the washing water, when the circulation pump 67 is driven, the washing water entering the filter case 83 from the water tank 42 via the drain pipe 64 passes through the circulation side lattice rib 89 formed in the lint filter 65 and flows into the inflow side. From the path 68, it passes through the circulation pump 67, and is ejected into the rotary drum 43 via the discharge side path 69. The lint and the like in the washing water are collected by the circulation side lattice rib 89 part.

  As described above, the lint collected in the lint filter 65 can be removed and cleaned by the user by rotating the filter knob 84 from the outside.

  FIG. 3 is a plan view of the main part of the circulating water jetting part of the drum type washing machine according to the embodiment of the present invention as seen from the back side.

  In FIG. 3, the circulating water discharged from the circulation pump 67 is sent from the bottom side of the water tank 42 to the annular flow path 85 formed inside the front of the water tank 42 via the discharge side path 69. The fed circulating water is jetted into the rotary drum 43 from a plurality of jets 70 formed in the annular flow path 85.

  In FIG. 3, five jet outlets 70a, 70b, 70c, 70d, and 70e are illustrated as the jet outlet 70, but 70a and 70b are substantially the same height in the vertical direction, and are 70c and 70d at higher positions. Are provided at substantially the same height in the vertical direction, and have 70e at the top, and the shape is a substantially triangular hole or a substantially rectangular hole.

  And each opening area of the spout 70 is formed larger than the unit opening area of the lattice of the circulation side lattice rib 89 formed in the above-mentioned lint filter 65 which passes when washing water circulates through the water circulation system 56. Thus, the lint and the like that have passed through the circulation side lattice rib 89 are less likely to be clogged in the ejection port 70. Further, the jet outlets 70a and 70b having substantially the same height in the vertical direction have the same opening area, and the jet outlets 70c and 70d also have the same opening area. And the opening area of the spout 70e provided in the uppermost part is the largest, the spouts 70c and 70d are the next largest, and the spouts 70a and 70b are the smallest. That is, it is formed so that the opening area becomes larger as the jet port provided on the upper side. This is a response to the fact that the flow rate of the circulating water decreases and the jet flow rate decreases as it goes upward. By changing the opening area, each jet port provided at a substantially equal angle in the circumferential direction is used. The amount of jetting can be made substantially the same to stabilize the cleaning performance.

  In this embodiment, five jet outlets 70 are provided at equiangular positions in the circumferential direction. However, depending on the inner diameter size and shape of the water tank 42, any number may be arranged at substantially equal angles.

  As described above, in the present embodiment, the amount of jetted water from each jet of circulating water is configured such that the opening area of the circulating water jet provided inside the front of the water tank increases toward the top. Are substantially the same, and stable cleaning performance can be realized.

  In addition, by forming the opening area of the spout larger than the unit opening area of the circulation side lattice rib of the lattice-like rib portion provided in the lint filter, the lint etc. that have passed through the lint filter portion are less likely to clog the spout. Therefore, it is possible to secure a stable amount of ejection and enhance the effect of maintaining the ejection amount from each ejection port of the circulating water substantially the same.

  As described above, the drum-type washing machine according to the present invention can exhibit stable washing performance by the configuration of the water circulation system, and thus can be applied to other washing machines having a function of circulating washing water. .

41 Washing Machine Housing 42 Water Tank 43 Rotating Drum 45 Motor 56 Water Circulation System 63 Drainage Pump 65 Lint Filter 67 Circulation Pump 70 Spout 83 Filter Case 85 Annular Channel 87 Grid-like Rib 88 Drain-side Grid Rib 89 Circulation-side Grid Rib

Claims (2)

A rotating drum formed in a bottomed cylindrical shape, a water tank that rotatably includes the rotating drum, a motor that rotationally drives the rotating drum, a drain pipe connected to the bottom of the water tank, and lint etc. A filter case in which a lint filter to be collected is provided; a circulation pump disposed in communication with the filter case; and an annular channel formed in an arc shape inward of the front of the water tank and in communication with the circulation pump; A plurality of spouts provided on the inner peripheral side of the annular flow path, a water circulation system that circulates the wash water in the water tub by spouting the spout from the spout into the rotary drum, and the motor And a drum-type washing machine having a control means for controlling each step of washing, rinsing, dehydration and the like by controlling a circulation pump and the like, and the jet opening has a larger opening area as it goes upward. The drum-type washing machine according to claim 1, wherein an opening area of the spout is formed larger than an opening area of a lattice formed in a lint filter that passes when washing water circulates in the water circulation system.