JP2016146984A - Washing machine - Google Patents

Abstract

An object of the present invention is to provide a washing machine that efficiently supplies warm water to clothes and enhances the cleaning effect.
A hot water heater 72 is provided in a discharge side path 69 between a circulation pump 67 and a spout 70 provided in the front side of the water tank 42, and the hot water heater 72 is energized and washed during a washing process. By heating the water and driving the circulation pump 67 to inject the heated washing water into the storage tub 43, the heat of the hot water heater 72 can be supplied only to the circulating washing water. Since the heated washing water is sprayed onto the laundry, a high cleaning effect can be exhibited with less energy.
[Selection] Figure 1

Description

  The present invention relates to a washing machine for washing, rinsing, and dehydrating clothes stored in a storage tank.

  Conventionally, in this type of washing machine, during the washing process, in addition to stirring the laundry by rotating the storage tank, the washing liquid accumulated at the bottom of the water tank is warmed by a heater, and the warmed washing liquid is stored in the storage tank by a circulation pump. A configuration has been proposed in which the washing effect is increased toward the laundry to enhance the washing effect (see, for example, Patent Document 1).

  FIG. 3 is a longitudinal sectional view of a conventional washing machine described in Patent Document 1. As shown in FIG.

  In FIG. 3, the storage tank 1 is formed with an opening on the front surface, an opening is also provided on the front surface of the water tank 3 that encloses the storage tank 1, and a lid 11 is formed at the opening of the water tank 3 so as to be freely opened and closed. ing. And the circulation pump 17 which sucks water from the opening part provided in the bottom part of the water tank 3, the circulation hose 18 connected with the discharge outlet side of the circulation pump 17, and the one end side of the circulation hose 18 are connected, and the inside of the storage tank 1 is connected. Circulation means is constituted by the discharge port 19 that faces.

  Further, a heater 16 as a heating means is disposed on the inner bottom side of the water tank 3 so as to heat the water accumulated in the water tank 3.

  The discharge port 19 is disposed at a position facing the front opening of the storage tank 1 and above the storage tank 1, and discharges the washing liquid toward the center of the storage tank 1. In the process, while the inner garment 1 is rotated by the rotation of the storage tub 1 and the agitation washing is performed by tapping washing by dropping its own weight, the washing pump warmed by the heater is sprayed on the laundry by the operation of the circulation pump 17 to achieve the washing effect. It has a configuration to enhance.

JP-A-9-215893

  However, in the said conventional structure, since it is the structure which warms a washing liquid to predetermined temperature with the warm water heater arrange | positioned at the bottom part of the water tank which encloses a storage tank, it will warm up to a laundry with a lot of washing liquid in a water tank. Therefore, the hot water heater requires a large heat capacity, and there is a problem of consuming a large amount of power.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a washing machine that exhibits a high cleaning effect with less energy.

In order to solve the conventional problems, a washing machine of the present invention includes a storage tub for storing laundry, a water tub that rotatably includes the storage tub, a motor that rotationally drives the storage tub, and the water tub. A water supply means for supplying water into the water, a water circulation system for circulating the wash water in the water tank by injecting the water into the housing tank from a spout provided in the water tank by a circulation pump, a hot water heater for heating the wash water, And a control means for controlling a motor, a water supply means, a circulation pump, a hot water heater, and the like, and the hot water heater is arranged in a discharge side path between the circulation pump and the jet outlet.

  Thus, since the heat of the hot water heater can be supplied only to the circulating wash water, a high cleaning effect can be exhibited with less energy.

  INDUSTRIAL APPLICABILITY The washing machine of the present invention can efficiently warm water and spray it onto the laundry, and can exhibit a high cleaning effect with less energy.

The longitudinal cross-sectional view of the washing machine in embodiment of this invention. Block diagram of the washing machine Vertical section of a conventional washing machine

  The first invention includes a storage tub for storing laundry, a water tub for rotatably containing the storage tub, a motor for rotationally driving the storage tub, water supply means for supplying water into the water tub, and the inside of the water tub A water circulation system that circulates and circulates the washing water from the outlet provided in the water tank by a circulation pump, the hot water heater that heats the washing water, the motor, the water supply means, the circulation pump, the hot water heater, etc. And the hot water heater is arranged in a discharge side path between the circulation pump and the jet outlet.

  Thus, since the heat of the hot water heater can be supplied only to the circulating wash water, a high cleaning effect can be exhibited with less energy.

  In the second invention, in particular, the control means of the first invention is configured to provide a hot water heater cleaning process in which the rotational speed of the circulation pump is decreased by a predetermined time and driven intermittently before the end of the cleaning process. As a result, water is intermittently supplied to the hot water heater, and foreign matter adhering to the surface of the hot water heater can be peeled off. The peeled foreign matter falls by its own weight, and is discharged in the next rinsing process. Therefore, the performance of the hot water heater can be prevented from being lowered and the reliability can be improved.

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

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a washing machine according to an embodiment of the present invention.

  In FIG. 1, a water tank 42 is swingably disposed inside a washing machine casing 41, and a storage tank 43 is rotatably disposed in the water tank 42. A rotation axis (rotation center axis) 44 is provided in the horizontal direction at the rotation center of the storage tank 43, and a motor 45 attached to the rotation axis 44 near the back side of the water tank 42 is connected via a belt 46. As a result, the storage tank 43 is rotationally driven in the forward and reverse directions. Several protrusion plates 47 for stirring the laundry are provided on the inner wall surface of the storage tank 43. In addition, a large number of water passage holes 48 are provided on the entire outer surface of the storage tank 43.

  The water tank 42, the storage tank 43, the motor 45, and the like constitute a vibration-type water tank unit 49. The water tank unit 49 is formed from the upper part of the washing machine casing 41 by a plurality of spring bodies 50 and the lower part of the washing machine casing 41. Is supported by a plurality of anti-vibration dampers 51.

  An opening is formed on the front surface of the washing machine casing 41 corresponding to the water tub 42, and the opening is closed with a lid 52 so as to be freely opened and closed. The lid 52 is hermetically sealed through a seal packing 92 that functions as a vibration proof and water seal that connects the front and opening of the water tank 42 when closed, and is formed in the storage tank 43 by opening the lid 52. The laundry can be taken in and out of the storage tub 43 through the clothing entrance 53.

  The washing machine has a function of automatically controlling at least the washing process, the rinsing process, and the dehydrating process by automatically controlling the motor 45, the water supply system 54, the drainage system 55, and the water circulation system 56 in accordance with the mode setting and control program.

  A detergent container 61 is disposed in the upper part of the washing machine casing 41, and a drawer part (not shown) for accommodating the detergent and the soft finish is housed in the container part 61 so as to be freely drawn out forward. 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). The water can be supplied into the water tank 42 from the water supply path 62 in a timely manner through the detergent container 61 through 60.

  A recess 71 is formed at the bottom of the water tank 42, and a drain port 95 is formed in the recess 71. A drain pipe 64 is connected to the drain port 95, and the drain pipe 64 is connected to a filter case 88. The filter case 88 is provided with a drainage filter 65 that collects lint and the like in the drainage. The drainage filter 65 is attached and detached by operating a filter knob 89 from the lower front of the washing machine casing 41. The The drainage system 55 is disposed from the inside of the machine to the outside of the machine after passing the washing water in the water tank 42 through the drainage filter 65 at the end of the washing process, the end of the rinsing process, etc. by driving the drainage pump 63. Drain from the drain hose 66.

  A circulation pump 67 is connected to the filter case 88 via an inflow side path 68. The circulation pump 67 is connected to a spout 70 formed on the front side of the water tank 42 through a discharge side path 69. A plurality of jet outlets 70 are provided in the circumferential direction, and the circulating water is discharged from all directions of the circumference.

  The water circulation system 56 drives the circulation pump 67 to discharge the wash water in the water tank 42 into the storage tank 43 from the jet outlet 70 as the circulating water indicated by the solid line arrow. The water circulation system 56 circulates the water in the water tank 42 to prevent early dissolution and bias of the detergent, and to improve the function of easy washing.

  A hot water heater (heating means) 72 for heating the circulating water circulating in the discharge side passage 69 is disposed in the middle of the discharge side passage 69 connecting the circulation pump 67 and the jet outlet 70. When the washing water passes through the discharge side passage 69, it is heated by the hot water heater 72. The heated circulating water is discharged from the spout 70 into the storage tank 43, 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.

  An air trap 74 is formed on the side wall of the bottom outer periphery of the water tank 42 in communication with the drain pipe 64. A water level detection means 76 constituted by a pressure sensor or the like is connected to the air and the lap 74 via an air pipe 75. The water level detection means is provided inside the upper part of the washing machine casing 41 and detects the water level in a plurality of stages based on the water pressure of the washing water supplied into the water tank 42.

The upper part of the rear surface of the detergent container 61 provided in the upper part of the washing machine casing 41 is connected to the upper part of the water tank 42 by a connection hose 77, and the water tank 42 that is pressurized by a driving action through the connection hose 77. The air inside is exhausted.

  At the rear of the upper surface of the water tank 42, vibration detection means 78 including an acceleration sensor that detects vibration of the water tank unit 49 is disposed. The vibration detection means 78 detects not only the acceleration in one direction of the water tank unit 49 but also vibrations in the three axial directions of front and rear (X axis direction), left and right (Y axis direction), and vertical (Z axis direction). To control. The reason why the vibration in the three-axis direction is detected is that the actual vibration of the aquarium unit 49 is not necessarily limited to one direction, and therefore it is detected with high accuracy using a multi-axis acceleration sensor.

  Selection of the mode such as the driving course and various functions is performed by the user inputting to the input setting means 80 from the operation display means 79 provided at the upper front of the washing machine casing 41. The control device 81 disposed inside the upper part of the washing machine casing 41 displays the information on the display means 96 (see FIG. 2) on the operation display means 79 based on the input information to the input setting means 80 and the user. To inform.

  FIG. 2 is a block circuit diagram of the washing machine in the embodiment of the present invention.

  In FIG. 2, the control means 82 of the control device 81 is constituted by a microcomputer or the like. The control device 81 operates with power supplied from the commercial power supply 83 when the power switch 84 is turned on. The control device 81 inputs the outputs of the water level detection means 76, the cloth amount detection means 85, and the vibration detection means 78, and sets the display means 96 based on the contents set by the user input in the input setting means 80. Display the contents. In addition, the control device includes a motor 45, a hot water heater 72, a first electromagnetic valve 57, a second electromagnetic valve 58, a drainage pump 63, a circulation pump via a load driving means 86 constituted by a bidirectional thyristor, a relay and the like. The operation such as 67 is controlled, and each process of washing, rinsing and dehydration is controlled. Note that the display means 96 also notifies if there is any abnormality in the operation. The input setting means 80 and the display means 96 constitute an operation display means 79.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the user opens the lid 52 and puts clothes into the storage tank 43. When the user selects and starts an arbitrary course, the cloth amount detection means 85 detects the amount of cloth put in, and the control means 82 detects the water level according to the cloth amount and the amount of detergent with respect to the water amount at that water level. Is displayed on the display means 96.

  When the user puts the displayed amount of detergent into the drawer part of the detergent container 61 and starts the washing process, the first electromagnetic valve 57 operates to start water supply. When tap water is supplied into the water tank 42 together with the detergent in the detergent container 61, and water is supplied to the predetermined water level in the water tank 42, washing and stirring are performed, and the washing process proceeds.

  In the washing process, the motor 45 is driven, the storage tank 43 rotates at a low speed, and the agitation is performed by picking up the laundry and dropping it by its own weight. At the same time, the hot water heater 72 is energized and the circulation pump 67 is driven for a predetermined time. When the circulation pump 67 is driven, the washing water in the water tub 42 is heated when passing through the discharge side passage 69, and the heated washing water is circulated as laundry in the storage tub 43 from the spout 70 at the front of the water tub 42. The detergent is accelerated by being sprayed toward. The circulation pump 67 is driven again for a predetermined time after being stopped for a predetermined time. Washing is performed by repetition of driving and stopping of the circulation pump 67 and low-speed rotation of the storage tank 43. When a predetermined time elapses, the washing process ends.

It should be noted that foreign matter such as lint is contained in the washing water, and even if it is collected by the drainage filter 65, it is difficult to collect it completely, and it is unavoidable that it adheres to the surface of the hot water heater 72. In order to prevent foreign matter from adhering to the surface of the hot water heater 72, the hot water heater cleaning process is performed for a predetermined time before the end of the cleaning process. In the warm water heater cleaning process, the rotational speed of the circulation pump 67 is decreased and driven intermittently so that water does not reach the jet outlet 70. As a result, water is intermittently supplied to the hot water heater 72, and the foreign matter adhering to the surface of the hot water heater 72 can be peeled off. The peeled foreign matter can be dropped by the dead weight of the foreign matter and discharged outside the apparatus by drainage during the rinsing step performed after the washing step.

  In the rinsing process, the drainage pump 63 is driven to drain out of the machine. When a certain amount of drainage proceeds, the motor 45 is driven while the drainage pump 63 is driven to perform intermediate dehydration. After the intermediate dehydration is completed, rinse stirring is started.

  In the rinsing and agitation, when the first electromagnetic valve 57 is operated and water is supplied to a predetermined water level, the circulation pump 67 is driven and the water is circulated in the same manner as the washing process as the storage tank 43 is rotated at a low speed. Progresses. In the rinsing process, the rinsing water is circulated, but the hot water heater 72 is not energized.

  In the dehydration process, after the rinsing process is completed, the drain pump 63 is driven to drain the water in the water tank 42, and then the motor 45 is driven to rotate the storage tank 43 at a high speed. By applying centrifugal force to the laundry by rotation of the storage tub 43, moisture is separated from the laundry, and the storage tub 43 is rotated at a high speed for a predetermined time to complete the washing.

  As described above, in the present embodiment, the hot water heater 72 is provided in the discharge side passage 69 between the circulation pump 67 and the jet outlet 70 provided in the front side of the water tank 42, and at the time of the washing process, The hot water heater 72 is energized to heat the washing water, and the circulation pump 67 is driven to inject the heated washing water into the storage tub 43, so that only the circulating washing water is heated. Can be efficiently supplied, and heated washing water is sprayed onto the laundry, so that a high cleaning effect can be exhibited with less energy.

  As described above, the washing machine according to the present invention can provide a high cleaning effect with less energy by providing a hot water heater in the discharge side path of the circulation pump and performing the control thereof. It can be applied to other uses such as washing machines having

Reference Signs List 42 Water tank 43 Storage tank 45 Motor 56 Water circulation system 57 First water supply means 58 Second water supply means 65 Drain filter 67 Circulation pump 69 Discharge side path 70 Spout port 72 Hot water heater (heating means)
76 Water level detection means 82 Control means

Claims (2)

A storage tub for storing laundry, a water tub for rotatably containing the storage tub, a motor for rotationally driving the storage tub, water supply means for supplying water into the water tub, and a circulation pump for washing water in the water tub A water circulation system that circulates by being injected into the storage tank from a jet port provided in the water tank, a hot water heater that heats washing water, and a control means that controls the motor, water supply means, circulation pump, hot water heater, and the like The hot water heater is disposed in a discharge side path between the circulation pump and the jet outlet. 2. The washing machine according to claim 1, wherein the control means includes a hot water heater cleaning process in which the rotational speed of the circulation pump is reduced by a predetermined time and driven intermittently before the end of the cleaning process.

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