TW201837262A - Laundry machine and control device therefor - Google Patents

Abstract

A laundry machine comprises: an outer tank; an inner tank that is provided within the outer tank so as to be in communication with the interior of the outer tank; and a circulation path that is connected to the outer tank so as to be able to circulate water within the outer tank. Also provided are a circulation pump that forms a flow of water in the circulation path, a drive unit that provides drive in order to agitate water within the inner tank, and a control device that controls the circulation pump and the drive unit. The control device causes the circulation pump and the drive unit to provide drive during a water supply period, said water supply period being from when a supply of water into the inner tank from a water supply source begins until the water level of the inner tank reaches a laundry water level.

Description

Washing machine and its control device

FIELD OF THE INVENTION The present invention relates to a washing machine and a control device therefor.

BACKGROUND OF THE INVENTION A washing machine having a function of circulating water in an outer tub is known. As an example, a washing machine disclosed in Japanese Patent Laid-Open No. 7-275557 includes a water supply path for supplying water to an external tank and an internal tank from a water supply source, a circulation path connecting a lower part and an upper part of the external tank, and a circulation pump provided at Circulation path; and pulsator to stir the water in the inner tank. This washing machine operates as follows in response to a request to start washing. Initially, the water supply channel will be opened to allow water to be supplied into the outer tank. When the water supply path is opened, water containing detergent is supplied to the outer tank and the inner tank. Then, when the water level in the inner tank reaches a predetermined water level, the driving of the circulation pump is started. Driven by the circulation pump, the water in the outer tank will be discharged from the upper part of the outer tank back into the outer tank through the circulation path, thereby forming the flow of water circulating in the outer tank, the inner tank and the circulation path. With the water circulation, the water in the inner tank is stirred, so the detergent foams, and foam is generated in the outer tank and the inner tank.

SUMMARY OF THE INVENTION When foam is generated by driving of a circulation pump, there may be a large deviation in the distribution of foam in the inner tank. Therefore, there is a concern that a plurality of pieces of laundry which have been washed include those whose stains have not been sufficiently removed.

One form of a washing machine related to the present invention includes: an outer tank; an inner tank, which is arranged in the outer tank so as to communicate with the inside of the outer tank; and a circulation path, which is connected to the outer tank so as to circulate water in the outer tank. In addition, a circulation pump is provided to form a flow of water in the circulation path; a driving unit is configured to drive the agitated water in the inner tank; and a control device controls the circulation pump and the driving unit. In addition, the control device drives the circulation pump and the driving unit during a water supply period, which is a period from when water is supplied from the water supply source to the inner tank until the water level of the inner tank reaches the washing water level.

According to the washing machine and its control device related to the present invention, the circulation pump is used to generate foam, and the drive unit is used to stir the water in the interior, thereby reducing the deviation of the distribution of the foam. The removal of dirt on each garment will become less prone to unevenness.

A form for implementing the invention (embodiment) The washing machine 1 shown in FIG. 1 is an upright washing machine for washing clothes. Directional section. The washing machine 1 is used by being installed on a flat installation surface such as a floor (not shown). The washing machine 1 is driven by electric power supplied from an external power source (not shown) such as a commercial power source. In one example, a power line (not shown) of the washing machine 1 is connected to an external power source, so that the power of the external power source is supplied to various electrical components constituting the washing machine 1.

The washing machine 1 includes a main body 10, an outer tank 20, and an inner tank 30. The main body 10 constitutes the external appearance of the washing machine 1. The main body 10 includes a casing 11, a first opening 12, a main body cover 13, an operation portion 14, and a display portion 15. The casing 11 houses an outer groove 20 and an inner groove 30. An example of a material constituting the case 11 is a metal material. An example of the shape of the casing 11 is a substantially rectangular parallelepiped. The first opening 12 is provided on the top surface 11A of the case 11, for example. The first opening 12 has a size capable of loading and unloading clothes. The main body cover 13 is provided in the case 11 so as to be able to open and close the first opening 12.

The top surface 11A of the casing 11 includes an inclined surface 11B. The inclined surface 11B is, for example, provided on the top surface 11A on the back side of the washing machine 1 than the first opening 12 and is inclined so as to become higher from the front side to the back side of the washing machine 1. The operation unit 14 and the display unit 15 are provided on the inclined surface 11B, for example. The function of the operation unit 14 is to input various information regarding the operation of the washing machine 1. In one example, the operation unit 14 includes a function of switching the power on and off of the washing machine 1. The function of the display unit 15 is to display various information regarding the operation of the washing machine 1.

The outer groove 20 is fixed in the casing 11 of the body 10. The outer tank 20 includes a housing 21, a second opening 22, and an outer tank cover 23. The casing 21 houses an inner groove 30. An example of a material constituting the case 21 is a resin material. An example of the resin material is polypropylene. An example of the shape of the casing 21 is a substantially cylindrical shape. The second opening 22 is provided on, for example, the top surface 21A of the case 21 and faces the first opening 12. The second opening 22 has a size capable of loading and unloading clothes. The outer tank cover 23 is provided on the casing 21 so as to be able to open and close the second opening 22.

The inner groove 30 is provided in the outer groove 20 so as to communicate with the inside of the outer groove 20. The inner groove 30 is rotatable relative to the outer groove 20. The inner groove 30 includes a case 31, a third opening 32, and a plurality of communication holes 33. The casing 31 includes a storage space 31B, which can store clothes. An example of a material constituting the case 31 is a metal material. An example of a metal material is stainless steel. An example of the shape of the case 31 is a substantially cylindrical shape. The third opening 32 is provided on, for example, the top surface 31A of the case 31 and faces the second opening 22. The third opening 32 has a size capable of loading and unloading clothes. In a state where the main body cover 13 and the outer tank cover 23 are opened, the laundry is taken through the first opening 12, the second opening 22, and the third opening 32. The plurality of communication holes 33 are provided on the outer peripheral surface 31C of the case 31 so as to communicate with the accommodation space 31B and the outer groove 20, for example.

The washing machine 1 further includes a detergent box 40, a water supply pipe 50, and a water supply hose 60. The detergent box 40 functions to store detergent, softener, and the like. The detergent box 40 is provided, for example, above the outer tank 20 in the housing 11 of the main body 10. The function of the water supply pipe 50 is to supply water supplied from a water supply source (not shown) into the outer tank 20 and the inner tank 30. An example of a water supply is a faucet. The water supply pipe 50 is connected to the detergent box 40 so as to supply water to the detergent box 40, for example. The water supply pipe 50 includes a water supply valve 55 (see FIG. 2). The function of the water supply valve 55 is to adjust the amount of water supplied from the water supply pipe 50. The function of the water supply hose 60 is to supply the water supplied into the detergent box 40 into the outer tank 20 and the inner tank 30. The water supply hose 60 connects, for example, the detergent box 40 and the outer tank 20. The water flowing through the water supply pipe 50 is supplied into the detergent box 40, mixed with detergent, softener, and the like in the detergent box 40, and then supplied to the water supply hose 60, and is supplied from the water supply port 61 of the water supply hose 60 It is supplied into the outer tank 20 and the inner tank 30.

The outer tank 20 further includes an upper opening portion 24, a lower opening portion 25, and a drain opening portion 26. The upper opening portion 24 is provided on the top surface 21A of the case 21, for example. The water supply hose 60 is connected to, for example, the upper opening portion 24 of the outer tank 20. The lower opening portion 25 is provided on the bottom portion 21B of the case 21, for example. The drainage opening portion 26 is provided on the bottom portion 21B of the case 21, for example.

The washing machine 1 further includes a circulation path 70, a drainage path 80, and a circulation pump 90. The function of the circulation pump 90 is to form a flow of water in the circulation path 70. The circulation pump 90 is provided in the circulation path 70, for example. As shown in detail in FIG. 6, the circulation pump 90 includes an impeller 91, a circulation motor 92, and a casing 93. The circulation motor 92 includes an output shaft 92A. The impeller 91 is provided on the output shaft 92A. The impeller 91 is housed in a casing 93. The circulation pump 90 rotates the impeller 91 to form a water flow in the circulation path 70.

The circulation path 70 is connected to the outer tank 20 so that water in the outer tank 20 can be circulated. The circulation path 70 is connected to, for example, the upper opening portion 24 and the lower opening portion 25. The circulation path 70 includes a first circulation path 71 and a second circulation path 72. The first circulation path 71 connects the lower opening 25 and the casing 93 of the circulation pump 90. The second circulation path 72 connects the casing 93 of the circulation pump 90 and the detergent box 40. In one example, the circulation path 70 includes a first circulation path 71, a casing 93 of the circulation pump 90, a second circulation path 72, a part of the detergent box 40, and a water supply hose 60.

The drain path 80 is connected to the outer tank 20 so that water in the outer tank 20 can be drained. The drainage path 80 is connected to, for example, the drainage opening 26. The drainage path 80 includes a first drainage valve 81. The first drain valve 81 is opened when, for example, water in the outer tank 20 and the inner tank 30 is drained. Since the lower opening portion 25 and the upper opening portion 24 connected to the circulation path 70 and the drainage opening portion 26 connected to the drainage path 80 are individually formed, the load for the following design is reduced, and this design is used for The design of the characteristics related to flowing water in the circulation path 70 and the characteristics related to flowing water in the drainage path 80 are determined. Flowing water-related characteristics include, for example, the flow rate of water flowing through the circulation path 70 and the drainage path 80.

The distance between the upper opening portion 24 and the lower opening portion 25 is longer than the distance between the upper opening portion 24 and the drain opening portion 26. By driving the circulation pump 90, the water in the outer tank 20 flows from the lower opening 25 to the circulation path 70 and is supplied to the outer tank 20 from the upper opening 24 again. Therefore, the water in the outer tank 20 and the inner tank 30, and the circulation path 70 circulates. Since the distance between the upper opening portion 24 and the lower opening portion 25 is longer than the distance between the upper opening portion 24 and the drain opening portion 26, the washing machine 1 is formed by circulating water in the water flow in the outer tank 20 and the inner tank 30. The path becomes longer. Therefore, with the circulating water, the water in the inner tank 30 will be easily and uniformly stirred.

When the washing machine 1 is viewed in a plane, the upper opening portion 24 and the lower opening portion 25 sandwich the center of the outer tank 20, the center of the inner tank 30, and the center of a balancer (not shown) provided in the inner tank 30. . The function of the balancer is to balance the weight of the clothes contained in the inner tank 30. The balancer is provided in a ring shape along the edge of the third opening 32 in the inner groove 30, for example. In this configuration, since the distance between the upper opening portion 24 and the lower opening portion 25 becomes longer, the path of the water flow formed in the outer tank 20 and the inner tank 30 by the circulating water becomes longer. Therefore, with the circulating water, the water in the inner tank 30 will be easily and uniformly stirred.

The upper opening portion 24 is provided in a portion of the outer tub 20 near the back surface of the washing machine 1. The lower opening portion 25 is provided in a portion of the outer tub 20 near the front surface of the washing machine 1. In this configuration, since the water supplied into the outer tank 20 from the upper opening portion 24 flows obliquely from the upper part toward the lower part in the inner tank 30, the water in the inner tank 30 is more easily and uniformly stirred. The drain opening portion 26 is provided in a portion of the outer tub 20 near the back surface of the washing machine 1. Therefore, when the outlet (not shown) of the drainage channel 80 is pulled out to the back side of the washing machine 1, the length of the drainage channel 80 in the washing machine 1 can be shortened.

The washing machine 1 further includes a lock portion 74. The blocking portion 74 is provided on the circulation path 70. The function of the blocking portion 74 is to block the flow of air in the circulation path 70 when the circulation pump 90 is stopped. Since the flow of air in the circulation path 70 is blocked by the blocking portion 74, it is possible to prevent the water in the circulation path 70 from being unnecessarily discharged back into the outer tank 20. The blocking portion 74 is provided on the circulation path 70 on the downstream side than the circulation pump 90. In one example, the blocking portion 74 is provided on the second circulation path 72. Since the flow of the water in the circulation pump 90 is blocked by the lock portion 74, the situation where the water in the circulation path 70 is unnecessarily discharged back into the outer tank 20 is further suppressed.

The latch 74 includes a drain trap 74A. The drain bend 74A is formed at a position lower than the upstream and downstream sides of the drain bend 74A in the second circulation path 72 in a state where the washing machine 1 is installed. Therefore, as the operation of the circulation pump 90 is stopped, water is accumulated in the drain bend 74A, and the air flow in the circulation path 70 is blocked. In this way, the function of the lock section 74 can be exhibited even if electric power is not supplied to the lock section 74, and thus the power consumption in the washing machine 1 can be reduced. An example of the shape of the drain bend 74A is a substantially U-shape.

The washing machine 1 further includes a circulation drainage path 75. The circulation drainage path 75 connects the circulation path 70 and the drainage path 80 so that water in the circulation path 70 can be drained. In one example, the circulation drainage path 75 is connected to the casing 93 of the circulation pump 90 and the drainage path 80. The circulation drainage path 75 includes a second drainage valve 76. The second drain valve 76 is closed when, for example, the circulation pump 90 is driven, and is opened when the operation of the circulation pump 90 is stopped, so that the water in the circulation path 70 is drained.

The washing machine 1 further includes a pulsator 110 and a driving unit 120. The function of the pulsator 110 is to stir the water in the inner tank 30. The pulsator 110 is rotatably provided on the bottom portion 31D of the housing 31 with respect to the inner groove 30, for example. In one example, the pulsator 110 is rotatably provided with the center of the inner tub 30 as the rotation center when the washing machine 1 is viewed in a plane. The pulsator 110 includes a plurality of blades 111 and a base 112. The plurality of blades 111 are formed on the base portion 112 so as to stand from the base portion 112. An example of the number of the plurality of blades 111 is four. An example of the shape of the blade 111 is an unequal triangle.

The driving unit 120 is used for agitating and driving the water in the inner tank 30. The driving unit 120 includes a washing motor 121 and a switching unit 122 (see FIG. 2). An output shaft (not shown) of the washing motor 121 is connected to the inner tank 30 and the pulsator 110 through the switching section 122. An example of the switching unit 122 is a clutch. When the washing motor 121 and the inner tank 30 are connected by the switching unit 122, the inner tank 30 is rotated relative to the outer tank 20 by the drive of the washing motor 121. When the washing motor 121 and the pulsator 110 are connected by the switching unit 122, the pulsator 110 is rotated relative to the inner tank 30 by the drive of the washing motor 121, and the water in the inner tank 30 is stirred.

The washing machine 1 further includes a drying path 130 and a dryer 140. The drying path 130 is connected to the outer tank 20 so that warm air can be supplied into the inner tank 30. In one example, the drying path 130 connects the outer tank 20 and the drainage path 80. The function of the dryer 140 is to dry the laundry in the inner tub 30. The dryer 140 is installed in the drying path 130, for example. The dryer 140 is driven when the circulation pump 90 is stopped. Since the dryer 140 is driven in a state in which the air flow in the circulation path 70 is blocked by the blocking portion 74, the laundry can be efficiently dried.

In addition, there is a case where water vapor leaks out, that is, a case where water vapor generated from the laundry leaks out of the outer tank 20 through the circulation path 70 during the drying of the laundry. In one example, it is conceivable that water vapor flowing into the detergent box 40 leaks from a gap formed between the detergent box 40 and a cover (not shown). In this example, there is a concern that water vapor leaking from the outside of the outer tub 20 may adhere to various electrical components constituting the washing machine 1. However, in the washing machine 1, since the water vapor generated from the laundry is blocked by the lock portion 74 during the passage through the circulation path 70, the possibility that the water vapor leaks out of the outer tub 20 is reduced.

The dryer 140 includes a blower 141, a fan motor 142, and a heater 143 as shown in FIG. The function of the blower 141 is to generate air in such a manner that the air in the drying path 130 circulates. The blower 141 is, for example, a vortex fan having four blades. The function of the fan motor 142 is to rotate the blower 141. An output shaft (not shown) of the fan motor 142 is connected to the blower 141. The function of the heater 143 is to heat the air in the drying path 130. In one example, the heater 143 is provided on the downstream side of the blower 141 in the drying path 130. The blower 141 is rotated by the drive of the fan motor 142, and the wind generated by the blower 141 is heated by the heater 143, so that the warm air is supplied into the inner tank 30 through the outer tank 20.

The washing machine 1 further includes a control device 150. The control device 150 is provided in the main body 10 of the washing machine 1, for example (refer FIG. 1). The function of the control device 150 is to control various operations related to the washing machine 1 in accordance with the operation of the operation unit 14. The control device 150 controls the drive unit 120, the circulation pump 90, the dryer 140, the water supply valve 55, the first drain valve 81, the second drain valve 76, and the like according to the operation of the operation unit 14.

The configuration of the detergent box 40 and the water supply pipe 50 will be described with reference to FIG. 3.

The detergent box 40 includes a first storage portion 41, a second storage portion 42, a merging path 43, and a merging opening portion 44. The function of the first storage section 41 is to store detergent. In one example, the detergent is injected into the first storage portion 41 from the outside of the washing machine 1. The function of the second storage portion 42 is to store a softener. In one example, the softener is put into the second storage portion 42 from the outside of the washing machine 1. The function of the combined flow path 43 is to merge water, detergent, and softener. The water is water supplied from the water supply pipe 50. The detergent is a detergent stored in the first storage portion 41. The softener is a storage material. Softener in the second storage portion 42. The confluence path 43 is connected to the first storage portion 41 and the second storage portion 42. The merge opening 44 is provided on the downstream side of the merge path 43 and is connected to the water supply hose 60 (see FIG. 1).

The water supply pipe 50 includes a first pipe 51, a second pipe 52, a third pipe 53, and a common pipe 54. The first pipe 51, the second pipe 52, and the third pipe 53 are diverged from the common pipe 54. The first tube 51 includes a first supply port 51A. The first supply port 51A faces, for example, the first storage portion 41. The water flowing through the first pipe 51 is supplied to the first storage section 41 through the first supply port 51A, and is mixed with the detergent stored in the first storage section 41 and flows to the merge path 43. The second pipe 52 includes a second supply port 52A. The second supply port 52A faces, for example, the second storage portion 42. The water flowing through the second pipe 52 is supplied to the second storage portion 42 through the second supply port 52A, and is mixed with the softener stored in the second storage portion 42 and then flows to the merge channel 43.

The third tube 53 includes a shower head 53A. The shower head 53A is, for example, in the confluence path 43 opposed to a portion on the downstream side than a portion that merges with water, and the water is supplied to the first storage portion 41 and the second storage portion 42 of the water. When the water flowing through the third pipe 53 is supplied to the merging passage 43 through the shower head 53A, water containing a detergent, a softener, and the like becomes easily foamed. The second circulation path 72 is, for example, a portion of the detergent box 40 connected to a portion on the downstream side than a portion that merges with water in the merge path 43 and the water is supplied from the shower head 53A. water. When the water flowing through the second circulation path 72 and the water flowing through the joining path 43 merge, water containing detergents, softeners, and the like tends to foam.

The relationship between the lower opening portion 25 and the drainage opening portion 26 will be described with reference to FIG. 4.

When the washing machine 1 is viewed in a plane, the lower opening 25 and the drainage opening 26 are located at the center of the outer tank 20, the inner tank 30, the pulsator 110, and the balancer (not shown). The location of the center. In this configuration, since the distance between the lower opening portion 25 and the drain opening portion 26 becomes longer, it is difficult for a foreign substance washed away by the water flow from the drain opening portion 26 toward the drain path 80 to flow to the lower opening portion 25. Therefore, foreign matter does not easily enter the circulation path 70.

The area of the lower opening 25 is smaller than the area of the drainage opening 26. Therefore, it is difficult for foreign matter such as coins to flow into the circulation path 70. An example of a coin is a coin. The circulation path 70 includes a filter 73 (see FIG. 5). The filter 73 is provided in the lower opening part 25, for example. The filter 73 is formed so that coins cannot pass. Therefore, foreign objects such as coins cannot easily enter the circulation pump 90 (see FIG. 1) provided in the circulation path 70. The drain 80 does not contain a filter. Therefore, the resistance of the water in the drainage path 80 is reduced, and drainage performance is improved.

As shown in FIG. 5, the filter 73 includes a first hole 73A, a second hole 73B, and a connection hole 73C that form the lower opening portion 25. An example of the shape of the first hole 73A when the inner groove 30 is viewed in a plane is a circle. The shape of the second hole 73B is substantially the same as the shape of the first hole 73A. The first hole 73A and the second hole 73B are formed so that coins cannot pass through, and garbage separated from clothes accompanying washing can pass through. Since the first hole 73A and the second hole 73B are formed in the filter 73, the resistance of the water in the filter 73 becomes small. Further, by passing garbage through the holes 73A and 73B, the possibility that the passage area of the circulation path 70 becomes narrow due to the accumulation of garbage can be reduced.

The connection hole 73C is formed to connect the first hole 73A and the second hole 73B. In this configuration, when a first portion including one end portion such as a thread chip flows to the first hole 73A, and a second portion including the other end portion of the thread chip flows to the second hole 73B, the The third part between the first part and the second part can flow to the connection hole 73C. Therefore, the thread shavings are not easily caught in the filter 73.

The impeller 91 includes a plurality of blades 91A and a base 91B. The plurality of blades 91A extend radially from the base portion 91B. An example of the number of the plurality of blades 91A is four. An example of the shape of the blade 91A is a rectangle. In one example, the base 91B is attached to the output shaft 92A (see FIG. 6) of the circulation motor 92, and the impeller 91 is fixed to the output shaft 92A.

The configuration of the circulation motor 92 will be described with reference to FIG. 6.

The washing machine 1 further includes an adjustment structure 100. The adjustment structure 100 adjusts the position of the impeller 91 with respect to the bottom surface 93A so that the interval between the impeller 91 and the bottom surface 93A of the housing 93 when the rotation of the circulation motor 92 is stopped becomes longer than that of the impeller 91 and the bottom surface 93A when the circulation motor 92 rotates. The interval is narrower. A bottom surface 93A of the casing 93 is located below the impeller 91. When an opening is formed in a portion of the casing 93 that is opposite to the lower side of the impeller 91, the top surface of the circulation motor 92 constitutes the bottom surface of the casing 93.

The adjustment structure 100 includes a circulation motor 92. The circulation motor 92 further includes a rotor 92B and a stator 92C. The rotor 92B and the stator 92C are disposed below the bottom surface 93A of the case 93. The rotor 92B is connected to the output shaft 92A. The circulation motor 92 is driven by the electromagnetic force generated by the stator 92C, and the circulation motor 92 is stopped by the stator 92C eliminating the electromagnetic force.

In the circulation motor 92, as the stator 92C eliminates the electromagnetic force, the rotor 92B moves downward to leave the bottom surface 93A, thereby bringing the impeller 91 closer to the bottom surface 93A. In addition, the circulation motor 92 is configured such that the rotor 92B moves upward to approach the bottom surface 93A as the stator 92C generates an electromagnetic force, and thereby the impeller 91 can be separated from the bottom surface 93A. In one example, when the electromagnetic force of the stator 92C is eliminated, the impeller 91 is brought closer to the bottom surface 93A due to the weight of the impeller 91. The two-dot chain line in FIG. 6 shows a state where the impeller 91 is close to the bottom surface 93A.

When the rotation of the circulation motor 92 stops, the gap between the impeller 91 and the bottom surface 93A becomes narrower. Therefore, when water flows in the circulation path 70 while the circulation motor 92 is not rotating, garbage such as line debris is generated. It becomes difficult to enter between the impeller 91 and the bottom surface 93A. Therefore, rubbish and the like contained in the water are not easily caught on the circulation pump 90. In addition, since the circulation motor 92 has both a driving source for rotating the impeller 91 and a mechanism for adjusting the position of the impeller 91, the configuration of the device can be simplified. In addition, since the mechanism is configured to adjust the position of the impeller 91 based on the relationship between the rotor 92B and the stator 92C, the configuration of the circulation motor 92 can be simplified.

The circulation motor 92 is configured such that the impeller 91 comes into contact with the bottom surface 93A when no electromagnetic force is generated by the stator 92C. Therefore, in a state where the circulation motor 92 is not rotating, when water flows in the circulation path 70, it is difficult for garbage such as wire chips to enter between the impeller 91 and the bottom surface 93A.

An example of the operation of the control device 150 will be described with reference to FIG. 1.

The control device 150 memorizes a plurality of washing cycles related to the washing of the laundry. The washing cycle includes at least the water supply period SP and the washing period WP (see FIG. 8). The water supply period SP is a period during which water is supplied from the water supply source to the inner tank 30. Specifically, the water supply period SP is a period from when water is supplied from the water supply source to the inner tank 30 until the water level of the inner tank 30 reaches the washing water level WL. The washing water level WL is, for example, a water level of the inner tub 30 suitable for washing, and is set in advance according to the amount of laundry accommodated in the inner tub 30. The washing period WP is a period during which the laundry in the inner tub 30 is washed after the water supply period SP. The operations of the plurality of washing strokes, such as the circulation pump 90 and the driving unit 120 during the water supply period SP, are substantially the same, and the operations of the circulation pump 90 during the washing period WP are different. The control device 150 executes a washing course selected in accordance with the operation of the operation unit 14.

The control device 150 controls the circulation pump 90 during the water supply period. The water supply period SP includes a first period SP1, a second period SP2, and a third period SP3 (see FIG. 8). The first period SP1 is a period during which the circulation pump 90 is driven. The second period SP2 is a period in which the circulation pump 90 is stopped after the first period SP1, or after the first period SP1, the circulation pump 90 is driven with a driving force that is weaker than the driving force in the first period SP1. period. The second period SP2 includes a time point when the water level in the inner tank 30 has reached the washing water level WL.

In the first period SP1, with the driving of the circulation pump 90, the flow of water circulating in the outer tank 20, the inner tank 30, and the circulation path 70 is formed, and foam is generated in the outer tank 20 and the inner tank 30. In the second period SP2, when the circulation pump 90 is stopped, since the water does not circulate in the path including the circulation path 70, the force for generating foam in the outer tank 20 and the inner tank 30 is weakened. In the second period SP2, when the circulation pump 90 is driven with a weak driving force, since the flow intensity of the water to be circulated is weakened, foam is not easily generated in the outer tank 20 and the inner tank 30. In this way, in the second period SP2 in which the water level in the outer tank 20 and the inner tank 30 becomes higher than the first period SP1, since the foam is formed in a state that is not easily generated, the fear of the foam overflowing from the outer tank 20 is reduced. . In the wash water level WL having the highest water level in the outer tank 20 and the inner tank 30, the foam overflowed from the outer tank 20 because the circulation pump 90 has stopped or because the circulation pump 90 is driven by a weak driving force. Doubts will be lessened. In one example, the second period SP2 is a period in which the circulation pump 90 is stopped after the first period SP1.

The problem of foam overflowing from the outer tank mainly occurs in a washing machine including a circulation path.

The washing machine of the first example (hereinafter referred to as "the first washing machine") does not include an outer tank cover and a drying path. In the first washing machine, it is conceivable that when a large amount of foam is generated in the inner tank, the foam will accumulate on the water surface in the outer tank and the inner tank, and the foam will pass through the second opening of the outer tank. Overflow situation.

The washing machine of the second example (hereinafter referred to as a "second washing machine") includes an outer tank cover and does not include a drying path. Since the outer tank cover of the second washing machine is not used to seal the laundry in the inner tank and dry it with a dryer, the outer tank has a In many cases, the second opening is not properly closed by the outer groove cover, or a slit is formed in the outer groove cover. Therefore, it is conceivable that when a large amount of foam is generated in the inner tank, the foam will accumulate on the water surface in the outer tank and the inner tank, and the foam will pass through between the outer tank cover and the outer tank cover. Gaps, or spills through slits in the outer slot cover.

The washing machine of the third example (hereinafter "the third washing machine") includes an outer tank cover and a drying path. An example of the third washing machine is a drum-type washing machine. In the third washing machine, it is conceivable that when a large amount of foam is generated in the inner tank, the foam may accumulate on the water surface in the outer tank and the inner tank, and even the foam overflows from the outer tank and enters the drying The situation on the road. At this time, there is a concern that the foam entering the drying path is adhered to the dryer.

The washing machine of the fourth example is the washing machine 1 shown in FIG. 1. There is a possibility that the same problem as the third washing machine may occur in the washing machine 1. When a large amount of foam is generated in the inner tub 30 in the washing machine 1, the foam accumulates on the water surface in the outer tub 20 and the inner tub 30, and even the foam accumulates in the detergent box 40. At this time, it is conceivable that the foam overflowing from the outer tank 20 may overflow from the gap formed between the detergent box 40 and its cover.

The third period SP3 is a period during which the circulation pump 90 is stopped before the first period SP1, or before the first period SP1, the circulation pump 90 is driven with a driving force weaker than the driving force in the first period SP1. period. In a state where the water levels in the outer tank 20 and the inner tank 30 are low, since the amount of water in the outer tank 20 and the inner tank 30 is small, foam is not easily generated efficiently. In the washing machine 1, in a state where the water levels in the outer tank 20 and the inner tank 30 are low, the circulation pump 90 is stopped, or even when the circulation pump 90 is driven, its driving force is weak, so the energy of the washing machine 1 is used. Efficiency will be improved.

The third period SP3 includes a period from when water is supplied from the water supply source to the outer tank 20 to when the circulation pump 90 is filled with water. For example, in the third period SP3, the control device 150 controls the circulation pump 90 to stop the circulation pump 90. Therefore, in a state where the circulation pump 90 contains air, the doubt that the circulation pump 90 starts to operate is reduced.

The control device 150 controls the circulation pump 90 so that the second period SP2 becomes longer than the third period SP3. Since the second period SP2, where it is difficult to generate foam after the first period SP1, or the second period SP2, which generates a small amount of foam even if it is generated, becomes longer, the fear of the foam overflowing from the outer tank 20 is further reduced. The lengths of the first period SP1, the second period SP2, and the third period SP3 are appropriately changed depending on, for example, the amount of laundry accommodated in the inner tank 30.

The control device 150 controls the circulation pump 90 so that the driving and stopping of the circulation pump 90 are repeated in the first period SP1, or the driving force of the circulation pump 90 is strong and the driving force is repeated in the first period SP1 Weak states are repeated. When the water is continuously stirred with a strong force for the generation of foam, there is a concern that the volume of the foam increases sharply. In the washing machine 1, during the first period SP1 in which the circulation pump 90 is driven in order to generate foam, the driving state of the circulation pump 90 is stopped intermittently or the driving force of the circulation pump 90 is weakened. The doubt that foam will overflow from the outer tank 20 will be reduced. In one example, when the amount of laundry contained in the inner tank 30 by the control device 150 is greater than a predetermined amount, the circulation pump 90 is controlled in the first period SP1 so that the driving and stopping of the circulation pump 90 are repeated. Whether or not the amount of laundry contained in the inner tub 30 is larger than a predetermined amount is determined based on a load acting on the washing motor 121 when the pulsator 110 is rotated.

The control device 150 controls the operation of the pulsator 110 by driving the driving unit 120 during the water supply period SP. When the circulation pump 90 in the SP is supplied during the water supply period, foam is generated in the outer tank 20 and the inner tank 30, and when the pulsator 110 rotates, the water in the inner tank 30 is stirred. Therefore, the deviation of the distribution of the foam generated in the outer tank 20 and the inner tank 30 will be small, and the removal of dirt on each garment in the inner tank 30 will not easily cause unevenness.

The control device 150 drives the drive unit 120 while the circulation pump 90 is being driven during the water supply period SP. Since the state in which the water is circulated by the circulation pump 90 and the state in which the water is stirred by the rotation of the pulsator 110 are formed together, the foam is efficiently generated. The control device 150 starts driving of the circulation pump 90 and the driving unit 120 after the start time of the water supply period SP. In one example, the control device 150 maintains the state of stopping the driving unit 120 during the third period SP3, and starts driving of the driving unit 120 during the first period SP1. Since the circulating pump 90 and the driving unit 120 are not driven in a state where the water level in the inner tank 30 is low, there is a concern that the contact with the pulsator 110 that rotates by driving the driving unit 120 and damage to the clothes may be reduce.

The control device 150 stops driving of the circulation pump 90 and the driving unit 120 during the water supply period SP. In one example, the control device 150 stops the driving of the driving unit 120 during the second period SP2. When the driving of the circulation pump 90 and the driving unit 120 is stopped, since water does not circulate, foam is not easily generated in the outer tank 20 and the inner tank 30. Therefore, the doubt that the foam will overflow from the outer tank 20 will be reduced.

The control device 150 controls the driving unit 120 so that the length from the time point when the driving of the driving unit 120 is stopped halfway through the water supply period SP to the end time point of the water supply period SP becomes longer than that in the water supply period SP. The period during which the driving unit 120 is driven is longer. In one example, the control device 150 controls the driving unit 120 so that the second period SP2 becomes longer than the period during which the driving unit 120 is driven in the first period SP1. Therefore, the doubt that the foam overflows from the outer tank 20 will be further reduced.

The control device 150 controls the driving unit 120 so that the output of the driving unit 120 during the water supply period SP becomes smaller than the output of the driving unit 120 when the driving unit 120 is driven after the water supply period SP. In one example, the control device 150 controls the driving unit 120 so that the output of the driving unit 120 during the water supply period SP becomes smaller than the output of the driving unit 120 during the washing period WP. In the water supply period SP where the water level in the inner tub 30 is lower than the washing period WP, the output of the driving unit 120 is small, so that damage to clothing caused by contact with the pulsator 110 is suppressed.

The control device 150 controls the driving part 120 so that the maximum rotational speed of the driving part 120 during the water supply period SP becomes lower than the maximum rotational speed of the driving part 120 when the driving part 120 is driven after the water supply period SP. In one example, the control device 150 controls the driving unit 120 such that the maximum rotation speed of the driving unit 120 in the water supply period SP becomes lower than the maximum rotation speed of the driving unit 120 in the washing period WP. The rotation speed of the driving unit 120 has a correlation with the rotation speed of the pulsator 110. Therefore, even if the pulsator 110 is brought into contact with the clothing along with the driving of the driving unit 120, the rotation speed of the pulsator 110 is low, so that the clothing is less likely to be damaged. The control device 150 controls, for example, the driving unit 120 during the washing period WP so that the driving unit 120 is continuously driven.

An example of the operation of the circulation pump 90 in the washing period WP in various washing cycles will be described with reference to FIG. 7. The numerical values shown in parentheses in FIG. 7 indicate the driving time or the stopping time of the circulation pump 90. The unit of time is seconds.

The control device 150 controls the circulation pump 90 during various washing strokes so that the state in which the circulation pump 90 is driven and the state in which the circulation pump 90 is stopped are included in the washing period WP. When the circulation pump 90 is driven during the washing period WP, the flow of water circulating in the outer tank 20, the inner tank 30, and the circulation path 70 is formed, and foam is generated in the outer tank 20 and the inner tank 30. When the circulation pump 90 is stopped during the washing period WP, since water does not circulate in the path including the circulation path 70, the force for generating foam in the outer tank 20 and the inner tank 30 becomes weak. As such, since the foam is formed in a state in which it is difficult to generate foam in the washing period WP, the fear of foam overflowing from the outer tank 20 is reduced.

The control device 150 controls the circulation pump 90 during the washing period WP in various washing strokes so that the period during which the circulation pump 90 is driven becomes longer than the period during which the circulation pump 90 is stopped. Therefore, in the WP during washing, the amount of foam suitable for washing may be easily generated. The control device 150 stops the circulation pump 90 during the second half period including the end point of the washing period WP in various washing strokes. In the second half of the washing period WP in which the soiling of the laundry has been substantially removed, the amount of foam generated will have little effect on the final state of the laundry. Therefore, by stopping the circulation pump 90 during the second half of the washing period WP, it is possible to suppress the influence on the final state of the washing of the laundry, and to reduce the possibility of the foam overflowing from the outer tub 20.

The washing period WP includes a first washing period WP1 and a second washing period WP2 (see FIG. 8). The first washing period WP1 is a period in which the output of the driving unit 120 is relatively high. The second washing period WP2 is a period in which the output of the driving unit 120 is relatively low. The control device 150 controls the circulation pump 90 so that the state in which the circulation pump 90 is driven is included in the first washing period WP1, and the state in which the circulation pump 90 is stopped is included in the second washing period WP2. By driving the circulation pump 90 in the first washing period WP1 in which the output of the driving unit 120 is high, the amount of foam generation is increased. As a result, the ability to remove soiling from clothes becomes stronger. By stopping the circulation pump 90 in the second washing period WP2 where the output of the driving unit 120 is low, the amount of foam generation is reduced. Therefore, the doubt that the foam will overflow from the outer tank 20 will be reduced.

The control device 150 controls the driving unit 120 so that the maximum rotation speed of the driving unit 120 in the second washing period WP2 becomes lower than the maximum rotation speed of the driving unit 120 in the first washing period WP1. Therefore, the amount of foam generation in WP2 during the second washing period will be further reduced, and the doubt that foam will overflow from the outer tank 20 will be further reduced. The control device 150 controls the driving unit 120 so that the end point of the washing period WP is included in the second washing period WP2. Therefore, by driving the driving unit 120 with a lower output in the second washing period WP2 including the end time point of the washing period WP, it is possible to suppress the influence on the final state of the laundry and reduce the foaming Doubt that the outer tank 20 overflowed. In one example, the control device 150 controls the driving unit 120 during the second washing period WP2 in order to separate a plurality of clothes stored in the inner tub 30.

The control device 150 controls the circulation pump 90 so that the state in which the circulation pump 90 is driven and stopped is included in the first washing period WP1. In one example, the circulation pump 90 was stopped at the end point of the first washing period WP1. As the continuous driving time of the circulation pump 90 becomes longer, the volume of foam on the water surface in the inner tank 30 becomes larger, and the possibility of the foam overflowing from the outer tank 20 becomes higher. When the circulation pump 90 is continuously driven for a long period of time in the first washing period WP1 in which the output of the driving unit 120 is high, the possibility is increased. In the washing machine 1, since the state in which the circulation pump 90 is driven and stopped is included in the first washing period WP1 in which the output of the driving unit 120 is high, the situation in which the circulation pump 90 is continuously driven for a long time is avoided, and foam from the outside The doubt that the groove 20 overflows will be reduced.

The plurality of washing strokes includes a long stroke and a short stroke. The long stroke is a relatively long washing stroke of the WP during washing. The long stroke includes, for example, a first washing stroke, a second washing stroke, and a third washing stroke. The length of the washing period WP in the long stroke is in the order of the first washing stroke, the second washing stroke, and the third washing stroke. The short stroke is a relatively short washing stroke of the WP during washing. The short time course includes, for example, a fourth washing course, a fifth washing course, a sixth washing course, a seventh washing course, and an eighth washing course. The length of the washing period WP of the short-time stroke is in the order of the fourth washing stroke, the fifth washing stroke, the sixth washing stroke, the seventh washing stroke, and the eighth washing stroke. In the eighth washing stroke, the circulation pump 90 is not driven during the washing period WP.

The control device 150 controls the circulation pump 90 so that the period during which the circulation pump 90 is stopped during a long stroke is longer than the period during which the circulation pump 90 is stopped during a short stroke. The period during which the control device 150 stops the circulation pump 90 is a total of the time during which the circulation pump 90 is stopped during the washing period WP. Since the period during which the circulation pump 90 is stopped during a long stroke is long, even if the WP is relatively long during washing, the doubt that the foam will overflow from the outer tank 20 is reduced.

The control device 150 controls the circulation pump 90 during a long stroke so that the circulation pump 90 is driven intermittently. In one example, the control device 150 controls the circulation pump 90 during the first washing stroke and the second washing stroke in the long-term stroke so that the circulation pump 90 is driven intermittently. When the circulation pump 90 is driven intermittently, a series of actions stopped after the circulation pump 90 is driven will be repeated. In a series of operations when the circulation pump 90 is intermittently driven, the time during which the circulation pump 90 is stopped is set according to the time when the circulation pump 90 is driven. In one of the series of actions when the circulation pump 90 is intermittently driven, it is desirable that when the circulation pump 90 is driven for a relatively long time, in order to suppress foaming, the time for stopping the circulation pump 90 is also set to be relatively long. .

In one example, the control device 150 controls the circulation pump 90 during the first washing stroke so that the circulation pump 90 is driven for 400 seconds, then the circulation pump 90 is stopped for 120 seconds, then the circulation pump 90 is driven for 30 seconds, and then the circulation pump 90 is stopped 120 seconds, then the circulation pump 90 is driven for 30 seconds, and then the circulation pump 90 is stopped for 200 seconds. By intermittently driving the circulation pump 90, the period during which the circulation pump 90 is stopped becomes longer. Therefore, even when the washing period WP is relatively long, the possibility of foam overflow from the outer tank 20 is reduced.

The control device 150 controls the circulation pump 90 so that the driving time of the circulation pump 90 in the second half of the period during which the circulation pump 90 is intermittently driven becomes longer than the circulation pump 90 in the first half of the period when the circulation pump 90 is intermittently driven. The driving time is shorter. In addition, the control device 150 controls the circulation pump 90 so that the driving time of the circulation pump 90 during the second half of the period during which the circulation pump 90 is intermittently driven becomes longer than that during the first half of the period during which the circulation pump 90 is intermittently driven. The stopping time of the pump 90 is shorter. Since the foam generated in the outer tank 20 and the inner tank 30 will accumulate on the water surface in the inner tank 30, as the driving time of the circulation pump 90 during the intermittent driving of the circulation pump 90 becomes longer, the The volume of the foam becomes larger. In the washing machine 1, since the driving time of the circulation pump 90 in the second half period is shortened, the amount of foam generation is suppressed, and the doubt that the foam overflows from the outer tank 20 is reduced.

In one example, the control device 150 controls the circulation pump 90 so that the driving time of the last circulation pump 90 in the period in which the circulation pump 90 is intermittently driven becomes longer than the period in the first half of the period in which the circulation pump 90 is intermittently driven. The driving time of the pump 90 and the stopping time of the circulation pump 90 in the first half period are shorter. Since the driving time of the last circulation pump 90 becomes shorter, the amount of foam generation is further suppressed, and the doubt that the foam overflows from the outer tank 20 is further reduced.

The control device 150 controls the circulation pump 90 so that the stop time of the circulation pump 90 during the second half of the period during which the circulation pump 90 is intermittently driven becomes longer than the circulation pump during the second half of the period when the circulation pump 90 is intermittently driven. The 90 drive time is longer. In one example, the control device 150 controls the circulation pump 90 so that the stop time of the last circulation pump 90 during the intermittent driving period of the circulation pump 90 becomes longer than the last circulation pump 90 during the intermittent driving period of the circulation pump 90. The driving time is longer. Since the stop time of the last circulation pump 90 becomes longer, the amount of foam generation is suppressed, and the doubt that the foam overflows from the outer tank 20 is reduced.

The control device 150 controls the circulation pump 90 so that as the length of the long stroke becomes longer, the period during which the circulation pump 90 is stopped in the washing period WP also becomes longer. Therefore, the doubt that the foam overflows from the outer groove 20 during the long stroke is further reduced. The control device 150 controls the circulation pump 90 during a short time stroke so that the state in which the circulation pump 90 is intermittently driven is not included. Therefore, in a short time stroke, when the circulation pump 90 is driven, the doubt that the amount of foam generation becomes small will be reduced.

The control device 150 executes a washing course selected in accordance with, for example, the operation of the operation unit 14. In one example, before executing the washing stroke, the control device 150 controls the driving unit 120 so that the pulsator 110 rotates at a predetermined rotation speed, and determines whether the pulsator 110 is accommodated in the inner tank 30 based on the load acting on the washing motor 121. The amount of laundry. When the control device 150 determines that the amount of laundry contained in the inner tub 30 is less than a predetermined amount, the control device 150 executes a washing cycle in the first use state described below. When the control device 150 determines that the amount of laundry contained in the inner tub 30 is larger than a predetermined amount, the control device 150 executes a washing cycle in the second use state described below.

An example of the first use state of the washing machine 1 will be described with reference to FIG. 8. FIG. 8 shows an example of the operation of the first washing cycle in the first use state.

At time t1, the control device 150 controls the water supply valve 55 to supply water from the water supply source through the water supply pipe 50, the detergent box 40, and the like to the outer tank 20 and the inner tank 30 according to a predetermined water supply amount. An example of the prescribed water supply amount is 15 L / min. The water supplied into the outer tank 20 and the inner tank 30 includes a detergent, a softener, and the like. The water level in the inner tank 30 continues to rise during the period when water is supplied from the water supply source. In addition, the control device 150 controls the switching unit 122 so that the washing motor 121 and the inner tank 30 are connected by the switching unit 122 and controls the washing motor 121 so that the inner tank 30 rotates at a predetermined rotation speed. An example of the predetermined rotation speed is 35 rpm. When the inner tub 30 rotates at a predetermined rotation speed, a plurality of clothes accommodated in the inner tub 30 are separated. The control device 150 does not drive the circulation pump 90 in the third period SP3, and the third period SP3 includes a period from time t1 to time t2.

At time t2, the control device 150 controls the circulation motor 92 to drive the circulation pump 90. The control device 150 continuously drives the circulation pump 90 in the first period SP1, and the first period SP1 includes a period from time t2 to time t3. Therefore, foam is easily generated in the outer groove 20 and the inner groove 30. At time t2, after the control device 150 controls the washing motor 121 to stop the rotation of the inner tub 30, it will control the switching unit 122 so that the washing motor 121 and the pulsator 110 are connected through the switching unit 122, and will control The washing motor 121 rotates the pulsator 110 at the first rotation speed RS1. An example of the first rotation speed RS1 is 110 rpm.

At time t3, the control device 150 controls the circulation motor 92 to stop the circulation pump 90. The control device 150 maintains the state in which the circulation pump 90 is stopped during the second period SP2, and the second period SP2 includes a period from time t3 to time t4. At time t3, the control device 150 controls the washing motor 121 to stop the rotation of the pulsator 110. In the second period SP2 in which the water level in the outer tank 20 and the inner tank 30 becomes higher than the first period SP1, the circulation pump 90 and the driving unit 120 are stopped, so that foam is not easily formed in the outer tank 20 and the inner tank 30. Within the generated state. Therefore, the doubt that the foam will overflow from the outer tank 20 will be reduced.

At time t4, the control device 150 determines that the water level of the inner tank 30 has reached the washing water level WL, and controls the water supply valve 55 to stop the water supply from the water supply source to the outer tank 20 and the inner tank 30. The washing water level WL is the highest water level in the inner tank 30 during the washing cycle. The washing water level WL is set in accordance with the amount of laundry contained in the inner tub 30. The control device 150 controls the washing motor 121 so that the pulsator 110 rotates at the second rotation speed RS2. An example of the second rotation speed RS2 is 120 rpm. The control device 150 detects, for example, the amount of water (hereinafter referred to as "splashing water") splashed from the water surface in the inner tank 30 by rotating the pulsator 110 at the second rotation speed RS2. When the amount of splashing water is larger than a predetermined amount, there is a high possibility that the foam generated in the outer tank 20 and the inner tank 30 overflows from the outer tank 20. In one example, when the control device 150 determines that the amount of splashing water is larger than a predetermined amount, it drains a part of the water in the outer tank 20 and the inner tank 30 or suspends the washing stroke.

At time t5, the control device 150 controls the circulation motor 92 to drive the circulation pump 90. The control device 150 controls the circulation motor 92 during the washing period WP in the first washing cycle so that the circulation pump 90 is intermittently driven. In addition, the control device 150 controls the washing motor 121 so that the pulsator 110 rotates at the third rotation speed RS3. An example of the third rotation speed RS3 is 130 rpm. The control device 150 controls the washing motor 121 to continuously rotate the pulsator 110 at a third rotation speed RS3 during the first washing period WP1, and the first washing period WP1 includes a period from time t5 to time t11. The washing machine 1 starts to wash the clothes stored in the inner tub 30 after time t5.

At time t6, the control device 150 controls the circulation motor 92 to stop the circulation pump 90. At time t7, the control device 150 controls the circulation motor 92 to drive the circulation pump 90. At time t8, the control device 150 controls the circulation motor 92 to stop the circulation pump 90. At time t9, the control device 150 controls the circulation motor 92 to drive the circulation pump 90. At time t10, the control device 150 controls the circulation motor 92 to stop the circulation pump 90. The control device 150 maintains the state where the circulation pump 90 is stopped after time t10 during the washing period WP. Since the state in which the circulation pump 90 is driven and the state in which the circulation pump 90 is stopped are included in the washing period WP, during the washing period WP, a state in which bubbles are not easily generated is formed. Therefore, the doubt that the foam will overflow from the outer tank 20 will be reduced.

At time t11, the control device 150 controls the washing motor 121 so that the pulsator 110 rotates at the fourth rotation speed RS4. An example of the fourth rotation speed RS4 is 80 rpm. When the pulsator 110 rotates at the fourth rotation speed RS4, the clothes contained in the inner tank 30 are separated. At time t12, the control device 150 controls the washing motor 121 to stop the rotation of the pulsator 110. In addition, the control device 150 controls the drain valves 76 and 81 so that the water in the outer tank 20 and the inner tank 30 is drained. After the above steps, the control device 150 ends the first washing cycle in the first use state.

The control device 150 performs, for example, at least one of a rinsing step, a dehydrating step, and a drying step after the completion of various washing cycles. In one example, the control device 150 is executed in the order of a rinsing step, a dehydrating step, and a drying step.

The washing step is a step of washing the clothes contained in the inner tub 30. In one example, during the flushing step, the control device 150 controls the water supply valve 55 so that the outer tank 20 and the inner tank 30 are supplied with water again from the water supply source, and controls the washing motor 121 so that the inner tank 30 is at a predetermined The rotation speed rotates, and then the drain valves 76 and 81 are controlled so that the water in the outer tank 20 and the inner tank 30 is drained. An example of the predetermined rotation speed is 780 rpm. By performing the rinsing step by the control device 150, dirt, foam, and the like attached to the clothes are washed away.

The dehydration step is a step of dehydrating the clothes contained in the inner tank 30. In one example, in the dehydration step, the control device 150 controls the washing motor 121 in a state where the water in the outer tank 20 and the inner tank 30 has been drained, so that the inner tank 30 rotates at a predetermined rotation speed. An example of the predetermined rotation speed is 780 rpm. By the dehydration step performed by the control device 150, the laundry contained in the inner tank 30 is dehydrated.

The drying step is a step of drying the clothes contained in the inner tub 30. In one example, during the drying step, the control device 150 controls the fan motor 142 and the heater 143 to supply warm air in the inner tank 30. By performing the drying step by the control device 150, the laundry contained in the inner tank 30 is dried.

Next, an example of the second use state of the washing machine 1 will be described with reference to FIG. 9. FIG. 9 shows an example of the operation of the first washing cycle in the second use state.

At time t21, the control device 150 executes substantially the same processing as that performed at time t1 (see FIG. 8). The control device 150 does not drive the circulation pump 90 during the third period SP3, and the third period SP3 includes a period from time t21 to time t22.

At time t22, the control device 150 controls the circulation motor 92 to drive the circulation pump 90. The control device 150 controls the circulation motor 92 in the first period SP1 so that the driving and stopping of the circulation pump 90 are repeated. The first period SP1 includes a period from time t22 to time t25. At time t23, the control device 150 controls the circulation motor 92 to stop the circulation pump 90.

At time t24, the control device 150 controls the circulation motor 92 to drive the circulation pump 90. In addition, after the control device 150 controls the washing motor 121 to stop the rotation of the inner tub 30, it will control the switching unit 122 so that the washing motor 121 and the pulsator 110 are connected through the switching unit 122, and will control the washing motor 121 to The pulsator 110 is rotated at a first rotation speed RS1. At time t25, the control device 150 controls the circulation motor 92 to stop the circulation pump 90. The control device 150 maintains the state in which the circulation pump 90 is stopped during the second period SP2, and the second period SP2 is from time t25 to time t26. The control device 150 controls the washing motor 121 to stop the rotation of the pulsator 110.

The control device 150 executes processes substantially the same as those executed at times t4 to t12 (see FIG. 8) at times t26 to t34. After the above steps, the control device 150 ends the first washing cycle in the second use state.

An example of a method of using the washing machine 1 will be described with reference to FIG. 1.

The washing machine 1 is used by a user, for example, as follows. In the first procedure, the body cover 13 and the outer tank cover 23 are opened, and the clothes are put into the storage space 31B of the inner tank 30 through the openings 12, 22, and 32. In the second procedure, detergents, softeners, and the like are stored in the detergent box 40. In the third program, when the operation unit 14 is operated, the power of the washing machine 1 is set to on, and an arbitrary washing cycle is selected.

The washing machine 1 executes a washing cycle selected by the third program. The control device 150 controls the circulation pump 90 during the water supply period SP of the washing stroke so that the state in which the ring pump 90 is driven and the state in which the ring pump 90 is stopped are included. Therefore, a state in which foam is not easily generated in the water supply period SP is formed, and the fear that the foam overflows from the outer tank 20 is reduced. The control device 150 controls the circulation pump 90 during the washing period WP of the washing stroke so that the state in which the circulation pump 90 is driven and the state in which the circulation pump 90 is stopped are included. Therefore, a state in which foam is not easily generated in the WP during washing may be formed, and the fear that the foam may overflow from the outer tank 20 may be reduced. After the laundry contained in the inner tub 30 is washed, the washed laundry is taken out from the storage space 31B of the inner tub 30 in the fourth process. (Modification)

The description of the embodiment is an example of the form that the washing machine and its control device related to the present invention can take, and is not intended to limit the form. In addition to the embodiments, the present invention can adopt, for example, a modified example of the embodiment shown below and a combination of at least two modified examples that do not contradict each other.

・ The control content in the first period SP1 of the water supply period SP can be arbitrarily changed. In the first example, the control device 150 controls the circulation pump 90 during the first period SP1 so that a strong driving force and a weak state of the circulating pump 90 are repeated. In the second example, the controller 150 controls the circulation pump 90 when the amount of laundry contained in the inner tank 30 is greater than a predetermined amount, so that the circulation pump 90 is continuously driven during the first period SP1. In the third example, the controller 150 controls the circulation pump 90 when the amount of laundry contained in the inner tank 30 is less than a predetermined amount, so that in the first period SP1, the driving and stopping of the circulation pump 90 are stopped repeat.

・ Control contents in the second period SP2 of the water supply period SP can be arbitrarily changed. For example, in the second period SP2, the control device 150 controls the circulation pump 90 so that the circulation pump 90 is driven with a driving force that is weaker than the driving force in the first period SP1.

・ Control contents in the third period SP3 of the water supply period SP can be arbitrarily changed. For example, in the third period SP3, the control device 150 controls the circulation pump 90 so that the circulation pump 90 is driven with a driving force that is weaker than the driving force in the first period SP1.

-The relationship between the second period SP2 and the third period SP3 of the water supply period SP can be arbitrarily changed. In the first example, the control device 150 controls the circulation pump 90 so that the second period SP2 and the third period SP3 become substantially the same length. In the second example, the control device 150 controls the circulation pump 90 so that the second period SP2 becomes shorter than the third period SP3.

・ The content of the third period SP3 in the water supply period SP can be arbitrarily changed. In the first example, the third period SP3 includes a period from when water is supplied from the water supply source to the outer tank 20 until the circulation pump 90 is filled with water. In the second example, the third period SP3 includes a period from when water is supplied from the water supply source to the outer tank 20 until the water level of the inner tank 30 reaches a predetermined water level. An example of an ideal range for specifying a water level is 15 to 25 mm. An example of a prescribed water level is 22 mm.

・ The structure of SP during water supply can be changed arbitrarily. In the first example, the first period SP1 is omitted from the water supply period SP. According to this example, the control device 150 does not drive the circulation pump 90 during the water supply period. In the second example, at least one of the second period SP2 and the third period SP3 is omitted from the water supply period SP.

・ The length of the period from the point in time when the driving of the drive unit 120 is stopped during the water supply period SP to the end point of the water supply period SP and the length of the period during which the drive unit 120 is continuously driven in the water supply period SP The relationship can be changed arbitrarily. In the first example, the control device 150 controls the drive unit 120 so that the length of the period from the time point when the driving of the drive unit 120 is stopped during the water supply period SP to the end time point of the water supply period SP becomes The length is substantially the same as the period during which the drive unit 120 is driven during the water supply period SP. In the second example, the control device 150 controls the driving unit 120 so that the length of the period from the time point when the driving of the driving unit 120 is stopped during the water supply period SP to the end time point of the water supply period SP becomes The length is shorter than the period during which the drive unit 120 is driven in the water supply period SP.

The relationship between the maximum rotation speed of the driving unit 120 during the water supply period SP and the maximum rotation speed of the driving unit 120 when the driving unit 120 is driven after the water supply period SP can be arbitrarily changed. In the first example, the control device 150 controls the driving unit 120 such that the maximum rotation speed of the driving unit 120 during the water supply period SP becomes the same as that of the driving unit 120 when the driving unit 120 is driven after the water supply period SP. The maximum rotation speed is substantially the same. In the second example, the control device 150 controls the driving unit 120 so that the maximum rotation speed of the driving unit 120 in the water supply period SP becomes substantially the same as the maximum rotation speed of the driving unit 120 in the washing period WP. . In the third example, the control device 150 controls the driving unit 120 so that the maximum rotation speed of the driving unit 120 during the water supply period SP becomes higher than that of the driving unit 120 when the driving unit 120 is driven after the water supply period SP. The highest rotation speed is higher. In the fourth example, the control device 150 controls the driving unit 120 so that the maximum rotation speed of the driving unit 120 in the water supply period SP becomes higher than the maximum rotation speed of the driving unit 120 in the washing period WP.

The relationship between the output of the driving unit 120 during the water supply period SP and the output of the driving unit 120 when the driving unit 120 is driven after the water supply period SP can be arbitrarily changed. In the first example, the control device 150 controls the driving unit 120 so that the output of the driving unit 120 during the water supply period SP becomes substantially the same as the output of the driving unit 120 when the driving unit 120 is driven after the water supply period SP. On the same. In the second example, the control device 150 controls the driving unit 120 so that the output of the driving unit 120 during the water supply period SP becomes substantially the same as the output of the driving unit 120 during the washing period WP. In the third example, the control device 150 controls the driving unit 120 so that the output of the driving unit 120 during the water supply period SP becomes greater than the output of the driving unit 120 when the driving unit 120 is driven after the water supply period SP Big. In the fourth example, the control device 150 controls the driving unit 120 so that the output of the driving unit 120 during the water supply period SP becomes larger than the output of the driving unit 120 during the washing period WP.

The relationship between the driving state of the circulation pump 90 and the driving state of the driving unit 120 during the water supply period SP can be arbitrarily changed. In one example, the control device 150 drives the driving unit 120 while the circulation pump 90 is stopped during the water supply period SP.

・ The driving state of the driving unit 120 in the water supply period SP can be arbitrarily changed. In the first example, the control device 150 controls the driving unit 120 so that the driving unit 120 is continuously driven during the water supply period SP. In the second example, the control device 150 controls the driving unit 120 so that the driving unit 120 remains stopped during the water supply period SP.

-The period during which the circulation pump 90 is stopped during the washing period WP can be arbitrarily changed. In the first example, the control device 150 stops the circulation pump 90 during the first half of the period including the start time point of the washing period WP. In the second example, the control device 150 stops the circulation pump 90 during the washing period WP.

The relationship between the period during which the circulation pump 90 is driven and the period during which the circulation pump 90 is stopped in the washing period WP can be arbitrarily changed. In the first example, the controller 150 controls the circulation pump 90 during the washing period WP so that the period during which the circulation pump 90 is driven and the period during which the circulation pump 90 is stopped are substantially the same. In the second example, the control device 150 controls the circulation pump 90 during the washing period WP so that the period during which the circulation pump 90 is driven is shorter than the period during which the circulation pump 90 is stopped.

The relationship between the period during which the circulation pump 90 is stopped during a long stroke and the period during which the circulation pump 90 is stopped during a short stroke can be arbitrarily changed. In the first example, the control device 150 controls the circulation pump 90 so that the period during which the circulation pump 90 is stopped during a long stroke is substantially the same as the period during which the circulation pump 90 is stopped during a short stroke. In the second example, the control device 150 controls the circulation pump 90 so that the period during which the circulation pump 90 is stopped during a long stroke is shorter than the period during which the circulation pump 90 is stopped during a short stroke.

The relationship between the period during which the circulation pump 90 is stopped and the length of the long stroke in the washing period WP can be arbitrarily changed. In the first example, the control device 150 controls the circulation pump 90 during a long stroke so that the period during which the circulation pump 90 is stopped during the washing period WP becomes substantially the same. In the second example, the control device 150 controls the circulation pump 90 so that as the length of the long stroke becomes longer, the period during which the circulation pump 90 is stopped in the washing period WP also becomes shorter.

The relationship between the driving time of the circulating pump 90 during the second half of the period during which the circulating pump 90 is intermittently driven and the driving time of the circulating pump 90 during the first half of the period during which the circulating pump 90 is intermittently driven can be arbitrarily changed. In the first example, the control device 150 controls the circulation pump 90 so that the driving time of the circulation pump 90 during the second half of the period during which the circulation pump 90 is intermittently driven becomes the same as the first half of the period during which the circulation pump 90 is intermittently driven. The driving time of the circulation pump 90 during the period is substantially the same. In the second example, the control device 150 controls the circulation pump 90 so that the driving time of the circulation pump 90 in the second half of the period during which the circulation pump 90 is intermittently driven becomes longer than the first half of the period in which the circulation pump 90 is intermittently driven. The circulation pump 90 is driven for a longer period of time. The relationship between the driving time of the circulating pump 90 during the second half period of the intermittent driving period of the circulating pump 90 and the stopping time of the circulating pump 90 during the first half period of the intermittent driving period of the circulating pump 90 is similarly modified. Examples will also hold.

The relationship between the driving time of the last circulating pump 90 during the intermittent driving of the circulating pump 90 and the driving time of the circulating pump 90 during the first half of the intermittent driving of the circulating pump 90 can be arbitrarily changed. In the first example, the control device 150 controls the circulating pump 90 so that the driving time of the last circulating pump 90 during the intermittent driving period of the circulating pump 90 becomes the first half of the period during which the circulating pump 90 is intermittently driven. The driving time of the middle circulation pump 90 is substantially the same. In the second example, the control device 150 controls the circulation pump 90 so that the driving time of the last circulation pump 90 during the period in which the circulation pump 90 is intermittently driven becomes longer than the first half of the period in which the circulation pump 90 is intermittently driven. The driving time of the middle circulation pump 90 is longer. The same modification also applies to the relationship between the driving time of the last circulating pump 90 during the intermittent driving of the circulating pump 90 and the stopping time of the circulating pump 90 during the first half of the intermittent driving of the circulating pump 90. Will be established.

The relationship between the stop time of the last circulating pump 90 during the intermittent driving of the circulating pump 90 and the driving time of the last circulating pump 90 during the intermittent driving of the circulating pump 90 can be arbitrarily changed. In the first example, the control device 150 controls the circulation pump 90 so that the stop time of the last circulation pump 90 during the intermittent driving of the circulation pump 90 becomes the last time during which the circulation pump 90 is intermittently driven. The driving time of the circulation pump 90 is substantially the same. In the second example, the control device 150 controls the circulation pump 90 so that the stop time of the last circulation pump 90 during the intermittent driving period of the circulation pump 90 becomes longer than the last cycle during the intermittent driving period of the circulation pump 90. The driving time of the pump 90 is shorter.

・ Whether the circulation pump 90 is intermittently driven during the washing period WP can be arbitrarily changed. In the first example, the control device 150 controls the circulation pump 90 during all the washing strokes during the long stroke so that the circulation pump 90 is driven intermittently. In the second example, the control device 150 controls the circulation pump 90 in a short time stroke so that the circulation pump 90 is driven intermittently. In the third example, the control device 150 controls the circulation pump 90 so that the circulation pump 90 is not intermittently driven.

-Whether the state of driving the circulation pump 90 and the state of stopping the circulation pump 90 are included in the washing period WP can be arbitrarily changed. In the first example, the control device 150 continuously drives the circulation pump 90 during the washing period WP. In the second example, the controller 150 maintains the state where the circulation pump 90 is stopped during the washing period WP.

The relationship between the maximum rotation speed of the driving unit 120 in the second washing period WP2 and the maximum rotation speed of the driving unit 120 in the first washing period WP1 can be arbitrarily changed. In the first example, the control device 150 controls the driving unit 120 so that the maximum rotation speed of the driving unit 120 in the second washing period WP2 becomes substantially the same as the maximum rotation speed of the driving unit 120 in the first washing period WP1. On the same. In the second example, the control device 150 controls the driving unit 120 so that the maximum rotation speed of the driving unit 120 in the second washing period WP2 becomes higher than the maximum rotation speed of the driving unit 120 in the first washing period WP1. high.

The relationship between the output of the driving unit 120 in the second washing period WP2 and the output of the driving unit 120 in the first washing period WP1 can be arbitrarily changed. In the first example, the control device 150 controls the driving unit 120 so that the output of the driving unit 120 in the second washing period WP2 becomes substantially the same as the output of the driving unit 120 in the first washing period WP1. In the second example, the control device 150 controls the driving unit 120 so that the output of the driving unit 120 in the second washing period WP2 becomes higher than the output of the driving unit 120 in the first washing period WP1.

・ The configuration of the dryer 140 can be arbitrarily changed. In one example, the dryer 140 includes a heat pump instead of the heater 143. The washing machine 1 can adopt a form in which the dryer 140 and the drying path 130 are omitted.

・ The structure of the adjustment structure 100 can be arbitrarily changed. In one example, the adjustment structure 100 includes another mechanism capable of adjusting the position of the impeller 91 instead of the circulation motor 92. An example of another mechanism is a ball screw. The washing machine 1 can adopt a form in which the adjustment structure 100 is omitted.

・ The configuration of the circulation motor 92 can be arbitrarily changed. In one example, the circulation motor 92 is configured so that the impeller 91 does not contact the bottom surface 93A of the housing 93 when the stator 92C does not generate electromagnetic force. Therefore, when the stator 92C of the circulation motor 92 does not generate electromagnetic force, a gap is formed between the impeller 91 and the bottom surface 93A.

・ The configuration of the lock portion 74 can be arbitrarily changed. In the first example, the blocking portion 74 is provided on the upstream side of the circulation path 70 than the circulation pump 90. In the second example, the closing portion 74 includes a solenoid valve instead of the drain bend 74A. The washing machine 1 can adopt a form in which the lock portion 74 is omitted.

・ The configuration of the filter 73 can be arbitrarily changed. In the first example, the filter 73 includes at least one hole in addition to the connection hole 73C, or includes at least one hole instead of the connection hole 73C. It is desirable that at least one hole is formed so that coins cannot pass through, and it is desirable that garbage separated from the laundry can pass through while washing. In the second example, at least one of the first hole 73A, the second hole 73B, and the connection hole 73C is omitted from the filter 73.

・ The configuration of the circulation path 70 can be arbitrarily changed. In one example, the circulation path 70 is connected to the upper opening portion 24 and the lower opening portion 25 without passing through the detergent box 40 and the water supply hose 60. According to this example, the second circulation path 72 connects the casing 93 and the outer tank 20 of the circulation pump 90.

・ The position of the upper opening portion 24 in the outer groove 20 can be arbitrarily changed. In the first example, the upper opening portion 24 is provided in a portion of the outer tub 20 near the front surface of the washing machine 1. In the second example, the upper opening portion 24 is provided in a portion near the center of the washing machine 1 in the outer tub 20. In the third example, the upper opening portion 24 is provided on the outer peripheral surface of the outer groove 20.

・ The position of the lower opening portion 25 in the outer groove 20 can be arbitrarily changed. In the first example, the lower opening portion 25 is provided in a portion of the outer tub 20 near the back surface of the washing machine 1. In the second example, the lower opening portion 25 is provided in a portion near the center of the washing machine 1 in the outer tub 20. In the third example, the lower opening portion 25 is provided on the outer peripheral surface of the outer groove 20.

The position of the drainage opening 26 in the outer tank 20 can be arbitrarily changed. In the first example, the drainage opening portion 26 is provided in a portion of the outer tub 20 near the front surface of the washing machine 1. In the second example, the drainage opening portion 26 is provided in a portion near the center of the washing machine 1 in the outer tub 20. In the third example, the drainage opening portion 26 is provided on the outer peripheral surface of the outer groove 20.

The relationship between the distance between the upper opening portion 24 and the lower opening portion 25 and the distance between the upper opening portion 24 and the drain opening portion 26 can be arbitrarily changed. In the first example, the distance between the upper opening portion 24 and the lower opening portion 25 and the distance between the upper opening portion 24 and the drain opening portion 26 are substantially the same. In the second example, the distance between the upper opening portion 24 and the lower opening portion 25 is shorter than the distance between the upper opening portion 24 and the drain opening portion 26.

The relationship between the area of the lower opening 25 and the area of the drainage opening 26 can be arbitrarily changed. In the first example, the area of the lower opening 25 and the area of the drainage opening 26 are substantially the same. In the second example, the area of the lower opening portion 25 is larger than the area of the drain opening portion 26.

-The washing machine 1 can adopt a form in which at least one of the circulation pump 90 and the pulsator 110 is omitted. When the circulation pump 90 is omitted in the washing machine 1, the circulation path 70 can be omitted. When the pulsator 110 is omitted in the washing machine 1, the inner tank 30 is rotated relative to the outer tank 20 with the driving of the driving unit 120, thereby stirring the water in the inner tank 30.

・ The configuration of the washing machine 1 can be arbitrarily changed. In one example, the washing machine 1 is a drum-type washing machine. The configuration of the drum-type washing machine is substantially the same as that of the washing machine 1.

As described above, the washing machine in the first disclosure includes: an outer tank; an inner tank installed in the outer tank so as to communicate with the inside of the outer tank; and a circulation path connected to the water tank so as to circulate water in the outer tank. Outer tank. In addition, a circulation pump is provided to form a flow of water in the circulation path; a driving unit is configured to drive the agitated water in the inner tank; and a control device controls the circulation pump and the driving unit. In addition, the control device drives the circulation pump and the driving unit during a water supply period, which is a period from when water is supplied from the water supply source to the inner tank until the water level of the inner tank reaches the washing water level.

The foam is generated by the driving of the circulation pump, and the water in the interior is stirred by the driving of the driving unit, thereby reducing the deviation of the distribution of the foam, and the removal of dirt on the clothes in the inner tank will change. It is not easy to cause unevenness.

In the washing machine in the second disclosure, in the first disclosure, the control device may drive the driving unit while the circulation pump is being driven during the water supply period.

Since the state in which the water is circulated by the circulation pump and the state in which the water is agitated by the driving portion are formed together, the foam is efficiently generated.

In the washing machine in the third disclosure, in the first disclosure, the control device may start driving the circulation pump and the driving unit after the start time of the water supply period.

As the water level in the inner tank is low, the circulation pump and the drive unit will not be driven, so the possibility of contact with the stirring member and damage to the clothes will be reduced. Pulsator.

In the washing machine in the fourth disclosure, in the second disclosure, the control device may start the circulation pump and the driving unit after the start time of the water supply period.

Because the foam is efficiently generated and the circulating pump and the driving unit are not driven when the water level in the inner tank is low, the fear of damage to clothing due to contact with the stirring member will be reduced. The stirring member contains A pulsator that operates by driving a driving unit.

In the washing machine in the fifth disclosure, in any of the first to the fourth disclosures, the control device may stop the driving of the circulation pump and the driving unit during the water supply period.

Since the circulation pump and the driving unit have been stopped, it is in a state where foam is hardly generated in the outer tank and the inner tank. As a result, doubts about foam overflowing from the outer tank will be reduced.

In the washing machine of the sixth disclosure, in the fifth disclosure, the control device may also control the drive unit so that the length of the period from the time point when the driving of the drive unit is stopped during the water supply period to the end time point of the water supply period Becomes longer than the period during which the drive unit is driven during the water supply period.

Since the period during which the circulation pump and the driving unit are stopped becomes longer, it is possible to form a state in which foam is not easily generated in the outer tank and the inner tank for a long time. As a result, doubts about foam overflowing from the outer tank will be reduced.

The washing machine in the seventh disclosure is in the first disclosure. The control device may also control the driving section so that the output of the driving section during the water supply period becomes greater than the output of the driving section when the driving section is driven after the water supply period. small.

By reducing the output of the drive unit during the water supply period when the water level in the inner tank is lower than the water supply period, the possibility of contact with the stirring member and damage to the clothes will be reduced. The pulsator is driven and operated by the unit.

The washing machine in the eighth disclosure is in the seventh disclosure, the control device may also control the driving section so that the maximum rotation speed of the driving section during the water supply period becomes higher than that of the driving section when the driving section is driven after the water supply period. The maximum rotation speed is lower.

By lowering the maximum rotation speed of the driving part during the water supply period when the water level in the inner tank is lower than that after the water supply period, the possibility of contact with the stirring member and thereby damaging the clothes will be reduced. A pulsator for driving a driving part to operate.

The washing machine in the ninth disclosure is the seventh or eighth disclosure, and after the water supply period, the laundry in the inner tub may be washed.

By making the output of the drive unit larger than the output during the water supply period in the washing period after the water supply period, a sufficient washing capacity can be expected.

The washing machine and its control device related to the present invention can be used in various washing machines including home use and business use.

1‧‧‧washing machine

10‧‧‧ Ontology

11, 21, 31‧‧‧ shell

11A, 21A, 31A‧‧‧ Top

11B‧‧‧ inclined surface

12‧‧‧ opening 1

13‧‧‧body cover

14‧‧‧Operation Department

15‧‧‧Display

20‧‧‧ Outer trough

21B, 31D‧‧‧ bottom

22‧‧‧ opening 2

23‧‧‧Outer slot cover

24‧‧‧ Upper opening

25‧‧‧ lower opening

26‧‧‧Drain opening

30‧‧‧Inner slot

31B‧‧‧Containment space

31C‧‧‧outer surface

32‧‧‧ opening 3

33‧‧‧Connecting hole

40‧‧‧ Detergent Box

41‧‧‧First Containment Division

42‧‧‧Second Containment Department

43‧‧‧ Confluence Road

44‧‧‧ Confluence opening

50‧‧‧ water supply pipe

51‧‧‧The first tube

51A‧‧‧The first supply port

52‧‧‧ 2nd tube

52A‧‧‧ 2nd supply port

53‧‧‧The third tube

53A‧‧‧head

54‧‧‧Common tube

55‧‧‧ water supply valve

60‧‧‧Water supply hose

61‧‧‧ water inlet

70‧‧‧Circular Road

71‧‧‧The first circulation road

72‧‧‧ 2nd circulation road

73‧‧‧ Filter

73A‧‧‧The first hole

73B‧‧‧2nd hole

73C‧‧‧Connecting hole

74‧‧‧Locking Department

74A‧‧‧Drain bend

75‧‧‧Circular drainage

76‧‧‧Second Drain Valve

80‧‧‧ Drainage

81‧‧‧The first drainage valve

90‧‧‧Circulation pump

91‧‧‧ Impeller

91A‧‧‧ Blade

91B‧‧‧Base

92‧‧‧cycle motor

92A‧‧‧Output shaft

92B‧‧‧Rotor

92C‧‧‧Stator

93‧‧‧shell

93A‧‧‧Underside

100‧‧‧ adjust structure

110‧‧‧pulsator

111‧‧‧ Blade

112‧‧‧Base

120‧‧‧Driver

121‧‧‧washing motor

122‧‧‧Switching Department

130‧‧‧ Dry Road

140‧‧‧ dryer

141‧‧‧ blower

142‧‧‧fan motor

143‧‧‧heater

150‧‧‧control device

SP‧‧‧ During water supply

SP1‧‧‧Period 1

SP2‧‧‧Period 2

SP3‧‧‧The third period

WL‧‧‧washing water level

WP‧‧‧Washing period

WP1‧‧‧The first washing period

WP2‧‧‧The second washing period

RS1‧‧‧1st rotation speed

RS2‧‧‧Second rotation speed

RS3‧‧‧3rd rotation speed

RS4‧‧‧4th rotation speed

t1 ~ t12, t21 ~ t34‧‧‧time

FIG. 1 is a schematic diagram of a washing machine in the embodiment.

Fig. 2 is a block diagram of a washing machine in the embodiment.

Fig. 3 is a perspective view showing the inside of a detergent box of the washing machine in the embodiment.

Fig. 4 is a plan view showing the inside of the outer tub and the inner tub of the washing machine in the embodiment.

Fig. 5 is a perspective view showing a circulation pump of a washing machine and its surroundings in the embodiment.

Fig. 6 is an operation diagram showing a relationship between an impeller and a circulation motor constituting a circulation pump of the washing machine in the embodiment.

FIG. 7 is a diagram showing an example of the operation of the circulation pump in various washing cycles of the washing machine in the embodiment.

FIG. 8 is a timing chart showing an example of the operation of the washing cycle in the first use state of the washing machine in the embodiment.

FIG. 9 is a time chart showing an example of the operation of the washing cycle in the second use state of the washing machine in the embodiment.

Claims (13)

A washing machine includes: an outer tank; an inner tank disposed in the outer tank so as to communicate with the outer tank; a circulation path connected to the outer tank so as to circulate water in the outer tank; a circulation pump A flow of water is formed on the circulation path; a driving part is used to drive the agitated water in the inner tank; and a control device controls the circulation pump and the driving part, and the control device drives the water supply period In the circulation pump and the driving unit, the water supply period is a period from when water is supplied from the water supply source to the inner tank until the water level in the inner tank reaches the washing water level. In the washing machine according to claim 1, wherein the control device drives the driving unit in a state where the circulation pump is driven during the water supply period. In the washing machine according to claim 1, wherein the control device starts driving of the circulation pump and the driving unit after a starting point of the water supply period. In the washing machine according to claim 2, wherein the control device starts driving of the circulation pump and the driving unit after a starting point of the water supply period. In the washing machine according to any one of claims 1 to 4, the control device stops driving of the circulation pump and the driving unit during the water supply period. In the washing machine according to claim 5, wherein the control device controls the driving unit so that a length of a period from a time point when the driving of the driving unit is stopped in the middle of the water supply period to an end time point of the water supply period, It becomes longer than the period during which the drive unit is driven in the water supply period. As in the washing machine of claim 1, wherein the control device controls the driving section so that the output of the driving section during the water supply period becomes greater than the output of the driving section when the driving section is driven after the water supply period smaller. The washing machine according to claim 7, wherein the control device controls the driving section so that the maximum rotation speed of the driving section during the water supply period becomes higher than the driving section when the driving section is driven after the water supply period. The maximum rotation speed is lower. The washing machine according to claim 7 or 8, wherein the water supply period is followed by a washing period in which the laundry in the inner tub is washed. A control device is a control device for a washing machine according to any one of claims 1 to 4 and 7 to 8. A control device is a control device for a washing machine as claimed in claim 5. A control device is a control device for a washing machine as claimed in claim 6. A control device is a control device for a washing machine as claimed in claim 9.