CN113167002A

CN113167002A - Washing machine

Info

Publication number: CN113167002A
Application number: CN201980081752.6A
Authority: CN
Inventors: 森大树; 松下丈也
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Aqua Co Ltd
Priority date: 2018-12-27
Filing date: 2019-12-23
Publication date: 2021-07-23
Anticipated expiration: 2039-12-23
Also published as: JP2020103567A; WO2020135309A1; CN113167002B

Abstract

The washing machine of the invention shortens the door locking time of the locked door after degerming rinsing, and comprises: a water supply path for supplying water to the drum arranged in the washing machine main body; an ozone water supply path for supplying ozone water to the drum; the ozone electrode enables the ozone supply channel to generate ozone; a hot water supply path for supplying hot water to the drum; and a control unit for controlling a door locking device for switching a door arranged on the washing machine main body in an opening and closing way to a locking state or an unlocking state, and after a degerming rinsing process is carried out, the hot water supply rinsing process is carried out under the state that hot water is supplied from the hot water supply path to the drum, wherein the degerming rinsing process is a process that rinsing is carried out under the state that ozone water is supplied from the ozone supply path to the drum.

Description

Washing machine

Technical Field

The present invention relates to a washing machine that performs, for example, a washing process, a rinsing process, and a dehydrating process.

Background

Among the existing washing machines, there are a washing machine having no drying function, which automatically performs a washing process to a rinsing process and a dehydrating process, and a washing machine having a drying function, which automatically performs a washing process to a rinsing process, a dehydrating process and a drying process.

In a conventional washing machine, a process of supplying ozone into a drum and rinsing laundry with ozone water (so-called sterilizing rinsing) is conceivable. Therefore, in this type of washing machine, ozone is generated by the ozone generating device and supplied into the drum, but the inside of the drum is filled with ozone because all of the ozone supplied into the drum is not dissolved in water.

In a normal operation, after the sterilizing rinsing is performed, the washing is finished after the dehydration process, and therefore, if the washing is properly finished, the ozone concentration in the drum is lowered, and there is no problem even if the door of the washing machine is opened.

However, if the laundry is highly biased during the dehydration, the dehydration may not be started. In the washing machine, when the spin-drying process is interrupted, the spin-drying process is restarted after the operation of disentangling the laundry is performed, but then, when the spin-drying process is repeatedly interrupted a predetermined number of times, the spin-drying process cannot be started, and thus the spin-drying process is stopped.

In this case, the display unit of the washing machine may display an error to prompt the user to perform an operation of releasing the laundry. At this time, the washing is not properly finished, and therefore the ozone concentration in the drum is not sufficiently low. Therefore, in the case where the sterilizing rinsing is performed in the washing machine, the door of the washing machine is locked so as not to be opened after that until the concentration of ozone in the drum is sufficiently low.

Therefore, in case that the dehydration process is suspended, the door of the washing machine cannot be opened until the concentration of ozone in the drum is sufficiently low although the drum is stopped. Therefore, the user cannot unlock the laundry, and thus the operation of the washing machine is stopped for a long time.

Further, it is known that the solubility of ozone in water differs depending on the temperature of water. For example, FIG. 16 shows the solubilities of oxygen and ozone with respect to pure water (cited from tables 1 to 6 of the literature: practical use of ozone in the environmental field (medical & environmental ozone research institute, supplement No. 3, 2007)). The solubility of ozone was 1.124g/L at a water temperature of 0 ℃ and 0.613g/L at a water temperature of 25 ℃. Therefore, it is found that ozone is less soluble in water when the water temperature is 25 ℃ than when the water temperature is 0 ℃.

In a washing machine, ozone water of a predetermined concentration is required in a drum for sterilization rinsing, and the ozone electrode is energized to generate a predetermined amount of ozone. When the feed water temperature is low, ozone is easily dissolved in water, and therefore the concentration of ozone water supplied into the drum becomes high. On the other hand, when the feed water temperature is high, ozone is not easily dissolved in water, and therefore the concentration of ozone water supplied into the drum is low.

In order to cope with various supply water temperatures, in a washing machine, even when the supply water temperature is high and ozone is not easily dissolved in water, it is necessary to set the energization time of the ozone electrode to be long in accordance with the high supply water temperature so as to obtain ozone water of a predetermined concentration necessary for the sterilization rinsing.

Therefore, in the conventional washing machine, the energization time of the ozone electrode is set to be constant regardless of the temperature of the supplied water, and therefore, when the temperature of the supplied water is low, the energization time of the ozone electrode is set to exceed a necessary time. Therefore, when the temperature of the feed water is low, the ozone concentration in the drum may exceed a necessary concentration.

Therefore, even when the ozone concentration in the drum is high after the sterilizing rinsing in the washing machine, it is necessary to set the door-locking time long so as not to unlock the door until the ozone concentration in the drum is sufficiently low. The door locking time of the prior washing machine is set to be fixed no matter how the water supply temperature is, so the door locking time is set to be longer, thereby the operation efficiency of the washing machine is reduced.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-33512

Disclosure of Invention

Problems to be solved by the invention

Accordingly, an object of the present invention is to provide a washing machine capable of improving operation efficiency by shortening a door locking time during which a door is locked after a sterilizing rinsing is performed.

Means for solving the problems

The present inventors have therefore studied how to shorten the time until the ozone concentration in the drum is sufficiently reduced after the aseptic rinsing is performed, and as a result, have found that the time required to sufficiently reduce the ozone concentration in the drum can be shortened by supplying hot water into the drum after the aseptic rinsing is performed to promote the decomposition of ozone.

The invention is an invention as follows: after the sterilization rinsing is performed, the rinsing operation is performed in a state in which hot water is supplied into the drum, thereby shortening the time required for sufficiently reducing the ozone concentration in the drum.

Further, the present invention is an invention comprising: in the dehydration process after the degerming rinsing, when the dehydration process is stopped due to the strong bias of the washings, the hot water is supplied to the drum, thereby shortening the time required for fully reducing the ozone concentration in the drum.

That is, the washing machine of the present invention includes: a water supply path for supplying water to the drum arranged in the washing machine main body; an ozone water supply path for supplying ozone water to the drum; an ozone electrode for generating ozone in the ozone water supply path; a hot water supply path for supplying hot water to the drum; and a control unit which controls a door locking device which can be opened and closed and is arranged on the washing machine main body to be switched into a locking state or an unlocking state, and after a degerming rinsing process is carried out, the degerming rinsing process is carried out under the state that hot water is supplied from the hot water supply path to the drum, wherein the degerming rinsing process is a process that rinsing is carried out under the state that ozone water is supplied from the ozone supply path to the drum.

Preferably, the washing machine of the present invention includes: a door locking time determination unit determining a door locking time for maintaining the door in a locked state after the degerming rinsing process is performed; and a shortening speed determining unit that determines a shortening speed of the door locking time according to a water temperature in the drum during the hot water supply rinsing, the shortening speed determining unit determining the shortening speed such that the shortening speed is faster as the water temperature in the drum during the hot water supply rinsing is higher.

Preferably, the washing machine of the present invention includes: a shortening speed correction unit correcting the shortening speed such that the shortening speed is faster as the water level in the drum is higher during the hot water supply rinsing.

Preferably, the washing machine of the present invention includes: a shortening speed correction unit correcting the shortening speed such that the shortening speed is faster as the rinsing time in the hot water supply rinsing process is longer.

The washing machine of the present invention is characterized by comprising: a water supply path for supplying water to the drum arranged in the washing machine main body; an ozone water supply path for supplying ozone water to the drum; an ozone electrode for generating ozone in the ozone water supply path; a hot water supply path for supplying hot water to the drum; and an eccentricity detecting unit for detecting a deviation of the laundry in the drum and performing a sterilization rinsing process and a dehydration process after the sterilization rinsing process, wherein the sterilization rinsing process is a process in which the laundry is rinsed in a state in which ozone water is supplied from the ozone water supply path into the drum, and hot water is supplied from the hot water supply path to the drum when the dehydration process is stopped due to the deviation of the laundry detected by the eccentricity detecting unit being equal to or more than a predetermined deviation during the dehydration process.

The washing machine of the present invention is characterized by comprising: a water supply path for supplying water to the drum arranged in the washing machine main body; an ozone water supply path for supplying ozone water to the drum: an ozone electrode for generating ozone in the ozone water supply path; a hot water supply path for supplying hot water to the drum; a water temperature detection sensor for detecting a water temperature in the drum; a control unit that controls a door lock device that switches a door provided to the washing machine main body so as to be openable and closable to a locked state or an unlocked state; a door locking time determination unit that determines a door locking time for maintaining the door in a locked state according to a water temperature in the drum during a sterilization rinsing process in which rinsing is performed in a state in which ozone water is supplied from the ozone water supply line into the drum; a first shortening speed determining unit that determines a first shortening speed of the door locking time according to a water temperature in the drum during the sterilizing rinsing; and a second shortening speed determining unit that determines a second shortening speed of the door locking time based on a water temperature in the drum during a hot water supply rinsing process, wherein the hot water supply rinsing process is performed in a state in which hot water is supplied from the hot water supply path to the drum after the degerming rinsing process is performed, the door locking time is shortened based on the first shortening speed until the hot water supply rinsing process is performed after the degerming rinsing process, and the door locking time is shortened based on the second shortening speed after the hot water supply rinsing process is performed.

Effects of the invention

In the washing machine of the present invention, after the sterilizing rinsing process is performed, the hot water supply rinsing process is performed in a state in which hot water is supplied to the drum, thereby promoting the decomposition of ozone in the drum and shortening the time required for the sufficient reduction of the ozone concentration in the drum.

In the washing machine of the present invention, the speed of shortening the door locking time corresponding to the water temperature in the drum is determined according to the water temperature in the drum during the hot water supply rinsing process. Therefore, the door can be unlocked by appropriately shortening the door locking time.

The invention provides a washing machine, which can properly correct the shortening speed of the door locking time according to the water level in a drum during the hot water supply rinsing process.

The invention provides a washing machine, which can properly correct the shortening speed of door locking time according to the rinsing time in the hot water supply rinsing process.

In the washing machine of the present invention, when the dewatering process is stopped due to a large bias of the laundry, for example, the hot water is supplied to the drum to promote the decomposition of ozone in the drum, thereby shortening the time required for the ozone concentration in the drum to be sufficiently reduced.

In the washing machine of the present invention, after the degerming rinsing process is performed until the hot water supply rinsing process is performed, the door locking time is shortened according to a first shortening speed determined based on the water temperature in the drum during the degerming rinsing process, and after the hot water supply rinsing process is performed, the door locking time is shortened according to a second shortening speed determined based on the water temperature in the drum during the hot water supply rinsing process. Therefore, in the case of performing the hot water supply rinsing process after the sterilizing rinsing process, the speed of shortening the door locking time can be reset according to the temperature of the water in the drum during the hot water supply rinsing process. Therefore, the door can be unlocked by appropriately shortening the door locking time.

Drawings

Fig. 1 is a side sectional view showing the structure of a washing machine 1 according to a first embodiment of the present invention.

Fig. 2 is a diagram showing a schematic configuration of the washing machine 1 in fig. 1.

Fig. 3 is a diagram showing the structure of the ozone generating apparatus of fig. 1.

Fig. 4 is a control block diagram of the washing machine 1 of fig. 1.

Fig. 5 is a graph showing a speed of shortening the door locking time according to the rinsing water temperature during the hot water supply rinsing process.

Fig. 6 is a diagram showing a method for shortening the door locking time.

Fig. 7 is a diagram showing an operation of the washing mode of the washing machine 1 of fig. 1.

Fig. 8 is a flowchart illustrating a method of determining a shortening speed of a door locking time in the washing machine 1 of fig. 1.

Fig. 9 is a control block diagram of a washing machine according to a second embodiment of the present invention.

Fig. 10 is a graph showing the door locking time corresponding to the water supply temperature during the sterilizing rinsing.

Fig. 11 is a diagram showing a reduction speed correction value of the door locking time corresponding to the rinsing water level during the hot water supply rinsing.

Fig. 12 is a diagram showing a shortened speed correction value of the door locking time corresponding to the rinsing time in the hot water supply rinsing process.

Fig. 13 is a flowchart illustrating a method of determining a door-locking time and a speed shortening in the washing machine of fig. 9.

Fig. 14 is a flowchart illustrating a method of determining a shortening speed of a door-locking time in the washing machine of fig. 9.

Fig. 15 is a control block diagram of a washing machine according to a third embodiment of the present invention.

Fig. 16 is a graph showing the solubility of ozone in water.

Description of the reference numerals

1: a washing machine; 10: a washing machine main body; 12: a door; 22: a drum; 51: a water supply path; 52: an ozone water supply path; 52 a: an ozone water supply valve; 63: an ozone electrode; 80: a control unit (control means); 80a, 180 a: a door lock time determination section (door lock time determination unit); 80b, 180 b: a shortening speed determination unit (a shortening speed determination unit, a first shortening speed determination unit, a second shortening speed determination unit); 85: a water temperature detection sensor; 180 c: a shortening speed correction unit (shortening speed correction means); 280 d: an eccentricity detection unit (eccentricity detection means).

Detailed Description

Hereinafter, a washing machine according to an embodiment of the present invention will be described with reference to the drawings.

(first embodiment)

As shown in fig. 1, the washing machine 1 is a drum-type washing machine and includes a washing machine main body 10 which is a cabinet constituting an external appearance. The front surface 10a of the washing machine main body 10 is inclined from the center to the upper part, and a laundry inlet 11 is formed in the inclined surface. The inlet 11 is covered with a door 12 that can be opened and closed.

In the washing machine body 10, an outer tub 20 is elastically supported by a plurality of dampers 21. A drum 22 is rotatably disposed in the outer cylinder 20. The outer cylinder 20 and the drum 22 are inclined with respect to the horizontal direction so that the rear surface side becomes lower. Thereby, the drum 22 rotates about a rotation axis extending in a direction inclined with respect to the horizontal direction.

The opening 20a on the front surface of the outer cylinder 20 and the opening 22a on the front surface of the drum 22 face the inlet 11, and are closed by the door 12 together with the inlet 11. A plurality of dewatering holes 22b are formed in the peripheral wall of the drum 22. Further, three lifting ribs 23 are provided at the circumferential wall of the drum 22 at substantially equal intervals in the circumferential direction.

A rotary wing 24 is rotatably disposed at the rear of the drum 22. The rotary wing 24 has a substantially disk shape. A plurality of protrusions 24a extending radially outward from the center are formed on the surface of the rotor blade 24. The rotary wing 24 rotates coaxially with the drum 22.

A motor 30 for generating torque for driving the drum 22 and the rotary wing 24 is disposed behind the outer cylinder 20.

As shown in fig. 2, the washing machine 1 includes: a water supply path 51 for supplying normal water to the drum 22 in the outer tub 20, an ozone water supply path 52 branched from the water supply path 51, a hot water supply path 53 for supplying hot water into the outer tub 20, a water discharge path 54 for discharging water in the outer tub 20, and a softener supply path 55 and a detergent supply path 56 for supplying softener and detergent into the outer tub 20. A hot water supplier 53A is connected to the hot water supply path 53, and hot water at a set temperature is supplied to the hot water supplier 53A.

The water supply path 51, the hot water supply path 53, the softener supply path 55, and the detergent supply path 56 are connected to a water collection introduction part 57 provided above the outer tub 20, the ozone water supply path 52 is connected above the outer tub 20, and the drain path 54 is connected below the outer tub 20. An overflow path 58 for discharging water exceeding the upper limit of the water level is provided near the upper end of the outer tub 20.

The washing machine 1 can perform a washing process, a rinsing process, a sterilizing rinsing process, a hot water supplying rinsing process, a dehydrating process, etc. Therefore, in the washing machine 1, the normal water supply, the ozone water supply, the hot water supply, and the drain valve 54a are performed by appropriately opening and closing the water supply valve 51a, the ozone water supply valve 52a, the hot water supply valve 53a, and the drain valve 54a, which are valves of the respective supply and drain systems.

Water supply strainers

51b and 53b are disposed upstream of the water supply valve 51a and the hot water supply valve 53a, respectively.

An exhaust path 60 is connected to the vicinity of the upper end of the outer tub 20, and the air and ozone in the drum 22 are discharged to the outside of the machine through the exhaust path 60. Activated carbon 60a is disposed in the exhaust path 60, and the gas passing through the exhaust path 60 is exhausted to the outside of the machine after passing through the activated carbon 60a, whereby a part of the ozone passing through the exhaust path 60 is consumed by the activated carbon 60 a.

The washing machine 1 can perform a process of supplying ozone water to the drum 22 and rinsing laundry with the ozone water (so-called sterilizing rinsing). Therefore, an ozone generator 61 for generating ozone is disposed in the ozone water supply passage 52 for supplying ozone water to the inside of the drum 22.

As shown in fig. 3, the ozone generating device 61 includes an ozone electrode 63, and the ozone electrode 63 is disposed in an ozone generating region 62 provided substantially horizontally in a part of the ozone water supply path 52. In the present embodiment, three

ozone electrodes

63a, 63b, and 63c are disposed as the ozone electrode 63. In the ozone generator 61, three

ozone electrodes

63a, 63b, and 63c are connected in series and passed through, and ozone is generated by electrolysis of water.

In the ozone generating region 62 of the ozone water supply path 61, a first connecting portion 62a extending upward is formed on the upstream side, and a second connecting portion 62b extending downward is formed on the downstream side. Therefore, by energizing the ozone electrode 63, the water in contact with the surface of the ozone electrode 63 is decomposed to generate ozone gas, and the ozone gas is dissolved in the water to become ozone water.

Fig. 4 is a control block diagram of the washing machine 1 of the present embodiment. As shown in fig. 4, the control unit 80 of the washing machine 1 is constituted by, for example, a microcomputer or the like, and includes a CPU, a ROM storing a program for controlling the operation of the washing machine 1, and a RAM temporarily storing data and the like used when the program is executed. The operation of the washing machine 1 is controlled by the control unit 80.

The control unit 80 includes a door-locking time determination unit 80a, a shortening speed determination unit 80b, and a hot water supply temperature storage unit 80 c. The control unit 80 is connected to an operation unit 81, the motor 30, a water supply valve 51a, a drain valve 54a, an ozone water supply valve 52a, an ozone generating device 61, and a door lock device 82.

The door-locking time determination portion 80a determines a door-locking time for maintaining the door 12 in the locked state after the sterilizing rinsing process. Therefore, the door-locking time determination unit 80a determines the door-locking time in consideration of the ozone elimination time after the sterilizing rinsing process until the ozone concentration in the drum 22 is sufficiently reduced to the predetermined concentration or less.

Thus, the door-locking device 82 is controlled based on the door-locking time determined by the door-locking time determining unit 80a so that the door 12 is not opened until the ozone concentration in the drum 22 is reduced to a predetermined concentration or less.

In the sterilizing rinsing process, water is supplied until the ozone water reaches the ozone rinsing set water level in the drum 22, and then water is supplied until the normal water reaches the predetermined water level in the drum 22. In a state where the normal water reaches a predetermined water level in the drum 22 for the sterilization rinsing, the ozone water having a predetermined concentration or higher is required in the drum 22.

Therefore, the concentration of the ozone water to be supplied until the ozone water reaches the ozone rinsing set water level in the drum 22 needs to be as follows: after the normal water reaches a predetermined water level in the drum 22, the concentration of the ozone water in the drum 22 reaches a predetermined concentration or more.

As described above, when the feed water temperature is low, ozone is easily dissolved into water, and therefore the concentration of ozone water supplied into the drum 22 becomes high. On the other hand, when the feed water temperature is high, ozone is not easily dissolved in water, and therefore the concentration of ozone water supplied into the drum 22 is low.

Therefore, even when the ozone concentration in the drum is high after the sterilizing rinsing, the door-locking time determination unit 80b determines the fixed door-locking time T0 regardless of the feed water temperature in consideration of the fact that the feed water temperature is low in order to sufficiently reduce the ozone concentration in the drum. Therefore, the door-locking time T0 determined by the door-locking time determination portion 80a exceeds the necessary time when the supply water temperature is high.

After the hot water supply rinsing process, the shortening speed determination unit 80b determines a shortening speed, which is a speed for shortening the door locking time, based on the temperature of the water in the drum 22 during the hot water supply rinsing process. The hot water supply set temperature of the hot water supplier 53A stored in the hot water supply temperature storage unit 80c is used as the water temperature in the drum 22 during the hot water supply rinsing. The shortening speed determining unit 80b determines the shortening speed from the degerming rinsing process to the hot water supply rinsing process to be a fixed shortening speed Δ T regardless of the temperature of the supplied water in the degerming rinsing process₀。

In washing machine 1, after the sterilizing rinsing process, the hot water supply rinsing process is performed in a state in which hot water is supplied to drum 22. When the temperature of the water in the drum 22 is high, the decomposition of ozone is promoted, and the decrease of the ozone concentration in the drum 22 is accelerated.

Therefore, when the hot water supply rinsing process is performed, the ozone concentration in the drum 22 becomes equal to or lower than the predetermined concentration until the door locking time determined by the door locking time determining part 80a elapses.

Therefore, the shortening speed determination unit 80b determines the shortening speed based on the temperature of the water in the drum 22 during the hot water supply rinsing, so that the door locking time corresponding to the hot water supply rinsing is rapidly reached to 0. The shortening rate is a rate at which ozone is decomposed per one time. The hot water supply set temperature stored in the hot water supply temperature storage unit 80c is used as the water temperature in the drum 22 during the hot water supply rinsing.

Specifically, as shown in fig. 5, shortening speed determination unit 80b determines rinsing water temperature T during hot water supply rinsing_SBelow T_S1In the case of DEG C, the shortening rate is determined as Delta T₁At the rinsing water temperature T_SIs T_S1At a temperature of not less than T_S2In the case of DEG C, the shortening rate is determined as Delta T₂At the rinsing water temperature T_SIs T_S2When the temperature is not lower than the predetermined temperature, the shortening rate is determined to be Δ T DEG C₃. In FIG. 5, T_S1＜T _S2，0＜ΔT ₁＜ΔT ₂＜ΔT ₃. Therefore, the faster the shortening speed, the shorter the time required for the predetermined door locking time to become 0.

For example, when the door locking time determined by the door locking time determining unit 80a is T and the shortening speed determined by the shortening speed determining unit 80b is Δ T, the shortening speed Δ T is shortened every time the door locking time T elapses by a certain time T as shown in fig. 6. Therefore, when the door-locking time T-nxΔ T (where n is an integer) reaches 0, the concentration of ozone in the drum 22 becomes a predetermined concentration or less.

The hot water supply temperature storage unit 80c stores the hot water supply set temperature of the hot water supply unit 53A to which the hot water supply path 53 is connected.

The operation unit 81 includes a sterilization rinse button 81a for performing sterilization rinsing. The operation unit 81 outputs an input signal corresponding to a button operated by the user to the control unit 80.

The control unit 80 controls the rotation speed of the drum 22 by controlling the motor 30.

The controller 80 controls the water supply valve 51a and the water discharge valve 54a to supply water into the outer tub 20 and discharge water from the outer tub 20.

The controller 80 controls the ozone water supply valve 52a and the ozone generator 61 to supply ozone water from the ozone water supply passage 52 into the drum 22 during the aseptic rinsing.

The control unit 80 controls the door lock device 82 that switches the door 12 to the locked state or the unlocked state, thereby locking and unlocking the door 12.

Next, an operation of the washing machine 1 will be described with reference to fig. 7. The washing machine 1 has, for example, a washing process, a rinsing process, a sterilizing rinsing process, a hot water supplying rinsing process, and a dehydrating process, and can perform an operation of a washing mode without a drying process. In the present embodiment, the following will be explained: before the cleaning process is completed, the user presses the sterilizing rinse button 81a of the operation unit 81 to insert a predetermined amount of money, thereby performing the sterilizing rinse process using ozone water.

< step S1: cleaning process

In step S1, the user opens door 12, puts laundry into drum 22, and closes door 12. When the washing process is started, the control part 80 opens the water supply valve 51a for supplying the general washing water to supply the general water to the drum 22. At this time, the controller 80 closes the drain valve 54a, and the supplied water is accumulated in the outer tub 20 and the drum 22. When a predetermined amount of water is supplied, controller 80 closes water supply valve 51a, and drives (turns on) motor 30 to rotate drum 22.

When the washing operation for a predetermined time period is completed, the control unit 80 opens the drain valve 54a, and the washing water in the drum 22 is discharged to the outside of the machine body through the drain passage 54. After the drainage, the controller 80 rotates the drum 22 at a high speed by the motor 30 to perform intermediate dewatering for removing the washing water contained in the laundry. The washing water removed from the laundry by the intermediate dewatering is discharged into drum 22 and discharged to the outside of the machine body through water discharge passage 54.

< step S2: rinsing Process

When the washing process in step S1 ends, a rinsing process is performed in step S2. When the rinsing process is started, controller 80 closes drain valve 54a, opens water supply valve 51a for supplying normal washing water, and supplies a predetermined amount of rinsing water to drum 22. When a predetermined amount of water is supplied, controller 80 closes water supply valve 51a, and rotates drum 22 by motor 30 to rinse the laundry in drum 22 for a predetermined time.

When rinsing is completed, controller 80 opens drain valve 54a to discharge the rinse water in drum 22 to the outside of the machine body via drain path 54. After the drainage, the rinsing water contained in the laundry is removed by the intermediate dehydration in the same dehydration operation as described above. The drained rinse water is also discharged to the outside of the machine body via the drain line 54 as described above.

< step S3: sterilization rinse Process

When the rinsing process in step S2 is ended, a sterilizing rinsing process is performed in step S3. When the sterilizing rinsing process is started, the controller 80 closes the drain valve 54a, opens the ozone water supply valve 52a, and supplies ozone water to the drum 22 via the ozone water supply path 52. Then, controller 80 closes ozone water supply valve 52a, stops supplying ozone water, opens water supply valve 51a for supplying normal water, and supplies normal water as rinse water to drum 22.

When the rinse water is supplied, controller 80 rotates drum 22 by motor 30 to perform aseptic rinsing of the laundry in drum 22 for a predetermined time using ozone water. When the sterilization rinsing is completed, the controller 80 opens the drain valve 54a to discharge the rinse water in the drum 22 to the outside of the machine body via the drain path 54.

< step S4: hot Water supply rinsing Process

When the sterilizing rinsing process in step S3 is ended, a hot water supply rinsing process is performed in step S4. When the hot water supply rinsing process is started, the controller 80 closes the drain valve 54a, opens the hot water supply valve 53a, and supplies hot water to the drum 22 through the hot water supply path 53. When water is present in the drum 22 at the time of starting the supply of hot water, the controller 80 opens the drain valve 54a to drain the water in the drum 22, and then opens the hot water supply valve 53a to supply hot water to the drum 22 through the hot water supply path 53. Therefore, the water having a low water temperature in the drum 22 can be prevented from being mixed with the supplied hot water.

When the supply of hot water is completed, controller 80 rotates drum 22 by motor 30 to rinse the laundry in drum 22 by supplying hot water for a predetermined time. When the hot water supply rinsing is completed, the controller 80 opens the drain valve 54a to discharge the rinse water in the drum 22 to the outside of the machine body via the drain passage 54.

< step S5: dehydration Process

When the hot water supply rinsing process in step S4 is ended, the dehydrating process is performed in step S5. When the spin-drying process is started, the control unit 80 increases the rotation speed of the drum 22 to the target rotation speed, and when the target rotation speed is reached, the spin-drying operation is performed until a predetermined spin-drying time elapses. When the spin-drying process is completed, controller 80 stops the rotation of drum 22 and ends the operation in the washing mode. The water removed during the dehydration is also discharged to the outside of the body through the drainage path 54 as described above.

A flow of determining the speed of shortening the door-locking time in the present embodiment will be described with reference to fig. 8.

< step S101 >

When the hot water supply rinsing process in step S101 is started, the control unit 80 opens the hot water supply valve 53a and supplies hot water to the drum 22 through the hot water supply path 53.

< step S102 >)

In step S102, control unit 80 continues to supply hot water to drum 22 until the rinse water level in drum 22 reaches the hot water supply rinse set water level.

< step S103 >

When the rinsing water level in drum 22 reaches the hot water supply rinsing set water level, control unit 80 stops the hot water supply in step S103.

< step S104 >)

In step S104, the control unit 80 determines whether or not the hot water supply set temperature stored in the hot water supply temperature storage unit 80a is lower than T_n1℃。

< step S105 >

In step S104, the control unit 80 determines that the hot water supply set temperature is lower than T_n1In the case of DEG C, the control section 80 determines the shortening speed in step S105At 1, the process ends.

< step S106 >)

In step S104, the control unit 80 determines that the hot water supply set temperature is T_n1When the temperature is higher than the predetermined temperature, the process proceeds to step S106, and the control unit 80 determines whether or not the set hot water supply temperature is lower than T_n2℃。

< step S107 >

In step S106, the control unit 80 determines that the hot water supply set temperature is lower than T_n2In the case of ° c, in step S107, the control portion 80 determines the shortening rate as Δ T₂The process is ended.

< step S108 >

In step S106, the control unit 80 determines that the hot water supply set temperature is T_n2When the temperature is higher than the predetermined temperature, the process proceeds to step S108, and the control unit 80 determines the shortening rate to be Δ T₃The process is ended.

The washing machine 1 of the present embodiment includes: a water supply path 51 for supplying normal water to the drum 22 disposed in the washing machine main body 10; an ozone water supply path 52 for supplying ozone water to the drum 22; an ozone electrode 63 for generating ozone in the ozone supply path 52; a hot water supply path 53 for supplying hot water to the drum 22; and a control unit 80 as a control means for controlling a door lock device 82 for switching the door 12 openably and closably provided in the washing machine main body 10 between a locked state and an unlocked state, and performing a hot water supply rinsing process in which the ozone water is supplied from the ozone water supply path 52 into the drum 22 in a state in which the hot water is supplied from the hot water supply path 53 into the drum 22 after performing a sterilization rinsing process.

Accordingly, in washing machine 1 of the present embodiment, after the sterilization rinsing process is performed, the hot water supply rinsing process is performed in a state in which hot water is supplied to drum 22, whereby the decomposition of ozone in drum 22 is promoted, and the time required for sufficiently reducing the ozone concentration in drum 22 can be shortened. Therefore, the door locking time in which the door 12 is locked can be shortened. In addition, the life span of the activated carbon 60a and the water-stop seal can be extended.

The washing machine 1 of the present embodiment includes: a door-locking time determining part 80a as a door-locking time determining unit that determines a door-locking time for maintaining the door 12 in a locked state after the degerming rinsing process is performed; and a shortening speed determining part 80b as shortening speed determining means for determining a shortening speed of the door-locking time based on the water temperature in the drum 22 during the hot water supply rinsing, the shortening speed determining part 80b determining the shortening speed so that the shortening speed is faster as the water temperature in the drum 22 during the hot water supply rinsing is higher.

Thus, in washing machine 1 of the present embodiment, the speed of shortening the door locking time corresponding to the water temperature in drum 22 is determined based on the water temperature in drum 22 during the hot water supply rinsing. Therefore, the door 12 can be unlocked by appropriately shortening the door locking time.

(second embodiment)

A washing machine according to a second embodiment of the present invention will be described with reference to fig. 9 to 15.

The washing machine of the present embodiment is mainly different from the washing machine 1 of the first embodiment in that a fixed door locking time is determined in the first embodiment, a door locking time corresponding to a water supply temperature is determined in the present embodiment, and a shortening rate corresponding to a water temperature during hot water supply rinsing is determined in the first embodiment. The washing machine of the present embodiment further includes a water temperature detection sensor 85 for detecting the temperature of water in drum 22. The same structure as that of the washing machine 1 of the first embodiment among the structures of the washing machine of the present embodiment is omitted from description.

As shown in fig. 9, the control section 180 has a door-lock time determination section 180a and a shortening speed determination section 180 b. The shortening speed determination unit 180b includes a correction unit 180 c. The controller 180 is connected to the operation unit 81, the motor 30, the water supply valve 51a, the drain valve 54a, the ozone water supply valve 52a, the ozone generator 61, the door lock device 82, and a water temperature detection sensor 85 for detecting the temperature of water in the drum 22.

The door-locking time determination section 180a determines the door-locking time for maintaining the door 12 in the locked state after the sterilization rinsing process, based on the water supply temperature during the sterilization rinsing process. As the water supply temperature, the water temperature in the drum 22 detected by the water temperature detection sensor 85 when the supply of the ozone water is completed and the energization of the ozone electrode 63 is stopped is used.

Specifically, as shown in fig. 10, at the feed water temperature T_pBelow T_p1In the case of C, the door lock time determination unit 180a determines the door lock time as T₁At the temperature T of the water supply_pIs T_p1At a temperature of not less than T_p2Under the condition of T DEG C, the door locking time is determined as T DEG C₂At the temperature T of the water supply_pIs T_p2Determining the door locking time as T DEG C under the condition of more than₃. In FIG. 10, T_p1＜T _p2，T ₁＞T ₂＞T ₃。

That is, in the case where the supply water temperature is low, ozone is easily dissolved into water, and therefore the concentration of ozone water supplied into the drum 22 is high, and therefore the door-locking time determination unit 180a determines the door-locking time to be a long time. On the other hand, when the supply water temperature is high, ozone is not easily dissolved in water, and therefore the concentration of ozone water supplied into the drum 22 is low, and therefore the door-locking time determination unit 180a determines the door-locking time to be short.

(1) The shortening speed determination part 180b determines a first shortening speed, which is a speed for shortening the door locking time after the sterilizing rinsing process, based on the water supply temperature during the sterilizing rinsing process. As the water supply temperature, the water temperature in the drum 22 detected by the water temperature detection sensor 85 when the supply of the ozone water is completed and the energization of the ozone electrode 63 is stopped is used.

Specifically, as shown in fig. 10, at the feed water temperature T_pBelow T_p1In the case of DEG C, the shortening rate determination unit 80b determines the shortening rate as Delta T₁', at the temperature T of the water supply_pIs T_p1At a temperature of not less than T_p2In the case of DEG C, the shortening rate is determined as Delta T₂', at the temperature T of the water supply_pIs T_p2When the temperature is not lower than the predetermined temperature, the shortening rate is determined to be Δ T DEG C₃'. In FIG. 10, T_p1＜T _p2，0＜ΔT ₁’＜ΔT ₂’＜ΔT ₃'. Therefore, the faster the shortening speed, the shorter the time required for the door-locking time to become 0.

(2) The shortening speed determination unit 180b determines a second shortening speed, which is a speed for shortening the door locking time, based on the shortening speed corresponding to the temperature of water in the drum 22 during the hot water supply rinsing. As the water temperature in drum 22 during hot water supply rinsing, the water temperature in drum 22 detected by water temperature detection sensor 85 during hot water supply rinsing is used.

Specifically, as in the first embodiment, as shown in fig. 5, the rinsing water temperature T during the hot water supply rinsing process_SBelow T_S1In the case of DEG C, the shortening rate determination unit 180b determines the shortening rate as Delta T₁At the rinsing water temperature T_SIs T_S1At a temperature of not less than T_S2In the case of DEG C, the shortening rate is determined as Delta T₂At the rinsing water temperature T_SIs T_S2When the temperature is not lower than the predetermined temperature, the shortening rate is determined to be Δ T DEG C₃. In FIG. 5, T_S1＜T _S2，ΔT ₁＜ΔT ₂＜ΔT ₃. Therefore, the faster the shortening speed, the shorter the time required for the predetermined door locking time to become 0.

Therefore, the shortening speed determination part 180b determines the shortening speed of the shortening of the door locking time as the first shortening speed after the sterilizing rinsing process is performed until the hot water supply rinsing process is performed. Thus, the door locking time is shortened according to the first shortening speed after the degerming rinsing process is performed until the hot water supply rinsing process is performed.

After the hot water supply rinsing process is performed, the shortening speed determination part 180b determines a shortening speed for shortening the door locking time as a second shortening speed. Thereby, after the hot water supply rinsing process is performed, the door locking time is shortened according to the second shortening speed.

Therefore, in the washing machine 1, the first shortening speed, which is determined after the hot water supply rinsing process is performed, after the sterilizing rinsing process is performed until the hot water supply rinsing process is performed, is reset to the second shortening speed.

The correcting part 180c corrects the rinsing water level and the rinsing time in the drum 22 during the hot water supply rinsing process. The rinsing water level in the drum 22 during the hot water supply rinsing is preset in the washing machine.

Specifically, as shown in FIG. 11, at the rinsing water level H_tIs lower than H₁In the case of (3), the correction section 180c determines the shortening speed correction value as Δ T_h1At a rinsing water level H_tIs H₁Above and below H₂In the case of (2), the shortening speed correction value is determined as Δ T_h2At a rinsing water level H_tIs H₂In the above case, the shortening speed correction value is determined as Δ T_h3. In FIG. 11, H_t＜H ₂，0＜ΔT _h1＜ΔT _h2＜ΔT _h3。

Therefore, the correcting section 180c performs correction so that the shortening speed determined by the shortening speed determining section 180b increases in accordance with the shortening speed correction value. Thus, the shortening speed is corrected so that the shortening speed is faster as the rinsing water level is higher. This is because, in the hot water supply rinsing process, the higher the rinsing water level is, the more the water in drum 22 is agitated, and the more ozone in drum 22 is likely to collide with the agitated water and be consumed.

Further, as shown in FIG. 12, at the rinsing time T_tBelow T_t1In the case of (3), the correction section 180c determines the shortening speed correction value as Δ T_t1At the rinsing water temperature T_tIs T_t1Above and below T_t2In the case ofDetermining the shortening speed correction value as Δ T_t2At the rinsing water temperature T_tIs T_t2In the above case, the shortening speed correction value is determined as Δ T_t3. In FIG. 12, T_t1＜T _t2，0＜ΔT _t1＜ΔT _t2＜ΔT _t3。

Therefore, the correcting section 180c performs correction so that the shortening speed determined by the shortening speed determining section 180b increases in accordance with the shortening speed correction value. Thus, the shortening rate is corrected so that the shortening rate becomes faster as the rinsing time becomes longer. This is because, in the hot water supply rinsing process, the longer the rinsing time, the more easily the ozone in the drum 22 collides with the agitated water and is consumed.

In the present embodiment, a flow of determining the door locking time and the shortening speed will be described with reference to fig. 13.

< step S201 >

In step S201, when the sterilizing rinsing process is started, the controller 80 opens the ozone water supply valve 52a and starts energization of the ozone electrode 63, and starts supply of ozone water to the drum 22 via the ozone water supply path 52.

< step S202 >

In step S202, controller 80 continues to supply ozone water to drum 22 until the water level in drum 22 reaches the ozone rinse set water level.

< step S203 >

When the water level in drum 22 reaches the ozone rinsing set water level, controller 80 closes ozone water supply valve 52a and stops energization of ozone electrode 63 to stop supply of ozone water in step S203.

< step S204 >

In step S204, the controller 80 detects the water temperature in the drum 22 as the supply water temperature by the water temperature detection sensor 85. Therefore, the control unit 80 detects the supply water temperature T substantially equal to the temperature of the water supplied to the ozone electrode 63 disposed in the ozone water supply path 52_p。

< step S205 >

In step S205, control unit 80 determines whether or not the feed water temperature is lower than T_p1℃。

< step S206 >

In step S205, the control portion 80 determines that the feed water temperature is lower than T_p1In the case of c, the control part 80 determines the door locking time as T in step S206₁And the shortening speed is determined as Δ T₁', the process is ended.

< step S207 >

In step S205, control unit 80 determines that the feed water temperature is T_p1If the temperature is higher than T deg.C, the process proceeds to step S207, and the control unit 80 determines whether the feed water temperature is lower than T deg.C_p2℃。

< step S208 >

In step S207, the control portion 80 determines that the feed water temperature is lower than T_p2In the case of c, the control unit 80 determines the door lock time as T in step S208₂And the shortening speed is determined as Δ T₂', the process is ended.

< step S209 >

In step S207, control unit 80 determines that the feed water temperature is T_p2If the temperature is higher than the predetermined temperature, the process proceeds to step S209, and the control unit 80 determines the door locking time as T ° c₃And the shortening speed is determined as Δ T₃', the process is ended.

In the present embodiment, a flow of determining a speed of shortening the door locking time will be described with reference to fig. 14.

< step S301 >

When the hot water supply rinsing process in step S301 is started, the control unit 80 opens the hot water supply valve 53a to supply hot water to the drum 22 through the hot water supply path 53.

< step S302 >)

In step S302, control unit 80 continues to supply hot water to drum 22 until the rinse water level in drum 22 reaches the set water level.

< step S303 >

When the rinsing water level in drum 22 reaches the set water level, controller 80 closes hot water supply valve 53a and stops the supply of hot water in step S303.

< step S304 >

In step S304, controller 80 detects the water temperature in drum 22 as the rinsing water temperature during the hot water supply rinsing process by water temperature detection sensor 85. Therefore, control unit 80 detects rinsing water temperature T after hot water is supplied into drum 22_s。

< step S305 >

In step S305, the control unit 80 determines the rinsing water temperature T detected in step S303_sWhether or not lower than T_s1℃。

< step S306 >

In step S305, the control unit 80 determines the rinsing water temperature T_sBelow T_s1In the case of ° c, in step S306, the control unit 80 determines the shortening speed as Δ T1, and proceeds to step S310.

< step S307 >

In step S305, the control unit 80 determines the rinsing water temperature T_sIs T_s1When the temperature is not lower than the predetermined temperature, the process proceeds to step S307, and the control unit 80 determines the rinsing water temperature T_sWhether or not lower than T_s2℃。

< step S308 >

In step S307, the control unit 80 determines that the rinsing water temperature Ts is lower than T_s2In the case of ° c, in step S308, the control portion 80 determines the shortening speed as Δ T₂The process proceeds to step S310.

< step S309 >

In step S307, control unit 80 determines rinsing water temperature T_sIs T_s2When the temperature is higher than or equal to the predetermined temperature, the process proceeds to step S309, and the control unit 80 determines the shortening rate as Δ T₃The process proceeds to step S310.

< step S310 >

In step S310, the control unit 80 determines the rinsing water level H during the hot water supply rinsing process_tWhether or not it is lower than H₁。

< step S311 >

In step S310, control unit 80 determines rinsing water level H_tIs lower than H₁In the case of (1), in step S311, the control section 80 determines the shortening speed correction value as Δ T_h1The process proceeds to step S315.

< step S312 >

In step S310, control unit 80 determines rinsing water level H_tIs H₁In the above case, the process proceeds to step S312, and control unit 80 determines rinsing water level H_tBelow H2.

< step S313 >

In step S312, control unit 80 determines rinsing water level H_tIs lower than H₂In the case of (1), in step S313, the control portion 80 determines the shortening speed correction value as Δ T_h2The process proceeds to step S315.

< step S314 >)

In step S312, control unit 80 determines rinsing water level H_tIs H₂In the above case, the process proceeds to step S314, and the control unit 80 determines the shortening speed correction value as Δ T_h3The process proceeds to step S315.

< step S315 >

In step S315, the control unit 80 determines the rinsing time T during the hot water supply rinsing process_tWhether to compare T_t1Short.

< step S316 >

In step S315, control unit 80 determines rinsing time T_tRatio T_t1In the short case, in step S316, the control portion 80 determines the shortening speed correction value as Δ T_t1The process proceeds to step S320.

< step S317 >

When the control unit 80 determines in step S315 that the rinsing time Tt is not less than Tt1, the flow proceeds to step S317, and the control unit 80 determines the rinsing time T_tWhether to compare T_t2Short.

< step S318 >

In step S317Control unit 80 determines rinsing time T_tRatio T_t2If short, the control unit 80 determines the shortening speed correction value as Δ Tt2 in step S318, and proceeds to step S320.

< step S319 >

In step S317, the control unit 80 determines the rinsing time T_tIs T_t2In the above case, the process proceeds to step S319, and the control unit 80 determines the shortening speed correction value as Δ T_t3The process proceeds to step S320.

< step S320 >

In step S320, the control unit 80 corrects the shortening speed determined in any one of steps S306, S308, and S309 based on the shortening speed correction value determined in any one of steps S311, S313, and S314 and the shortening speed correction value determined in any one of steps S316, S318, and S319, and determines the shortening speed.

For example, the shortening speed is determined as Δ T in step S306₁The shortening speed correction value is determined as Δ T in step S311_h1The shortening speed correction value is determined as Δ T in step S316_t1In the case of (1), the control unit 80 passes the Δ T₁+ΔT _h1+ΔT _t1The shortening speed is determined.

The washing machine of the embodiment comprises: a water supply path 51 for supplying normal water to the drum 22 disposed in the washing machine main body 10; an ozone water supply path 52 for supplying ozone water to the drum 22; an ozone electrode 61 for generating ozone in the ozone supply path 52; a hot water supply path 53 for supplying hot water to the drum 22; a water temperature detection sensor 85 for detecting the temperature of water in the drum 22; a control unit 80 as a control means for controlling a door lock device 82 for switching a door 12 openably and closably provided in the washing machine main body 10 to a locked state or an unlocked state; a door locking time determination unit 80a as door locking time determination means for determining a door locking time for maintaining the door 12 in a locked state, based on the water temperature in the drum 22 during the sterilization rinsing process in which the rinsing is performed in a state where the ozone water is supplied from the ozone water supply path 52 into the drum 22; a shortening speed determining part 80b as a first shortening speed determining means for determining a first shortening speed of the door locking time based on the water temperature in the drum 22 during the sterilizing rinsing; and a shortening speed determining part 80b as second shortening speed determining means for determining a second shortening speed of the door locking time based on the temperature of the water in the drum 22 in a hot water supply rinsing process performed in a state in which hot water is supplied from the hot water supply path 53 to the drum 22 after the degerming rinsing process is performed, shortening the door locking time based on the first shortening speed until the hot water supply rinsing process is performed after the degerming rinsing process is performed, and shortening the door locking time based on the second shortening speed after the hot water supply rinsing process is performed.

In the washing machine of the present embodiment, after the degerming rinsing process is performed until the hot water supply rinsing process is performed, the door locking time is shortened at a first shortening rate determined based on the water temperature in the drum 22 during the degerming rinsing process, and after the hot water supply rinsing process is performed, the door locking time is shortened at a second shortening rate determined based on the water temperature in the drum 22 during the hot water supply rinsing process. Therefore, in the case where the hot water supply rinsing process is performed after the sterilizing rinsing process is performed, the speed of shortening the door locking time can be reset according to the temperature of the water in the drum 22 during the hot water supply rinsing process. Therefore, the door can be unlocked by appropriately shortening the door locking time.

The washing machine of the embodiment comprises: the correcting unit 80c as the shortening speed correcting means corrects the shortening speed so that the shortening speed is faster as the water level in the drum 22 during the hot water supply rinsing is higher.

Thus, in the washing machine of the present embodiment, the speed of shortening the door locking time can be appropriately corrected according to the water level in drum 22 during the hot water supply rinsing process.

The washing machine of the embodiment comprises: the correcting unit 80c as the shortening speed correcting means corrects the shortening speed so that the shortening speed is faster as the rinsing time in the hot water supply rinsing process is longer.

Thus, in the washing machine of the present embodiment, the speed of shortening the door locking time can be appropriately corrected in accordance with the rinsing time during the hot water supply rinsing.

(third embodiment)

A washing machine according to a third embodiment of the present invention will be described with reference to fig. 15.

The washing machine of the present embodiment is mainly different from the washing machine 1 of the first embodiment in that, in the present embodiment, when the spin-drying process is stopped after the sterilizing rinsing process is performed, hot water is supplied from the hot water supply path 53 to the drum 22. The same structure as that of the washing machine 1 of the first embodiment among the structures of the washing machine of the present embodiment is omitted from description.

As shown in fig. 15, the control unit 280 includes a door-locking time determination unit 80a, a shortening speed determination unit 80b, a hot water supply temperature storage unit 80c, and an eccentricity detection unit 280 d. The control unit 280 is connected to the operation unit 81, the motor 30, the water supply valve 51a, the drain valve 54a, the ozone water supply valve 52a, the ozone generating device 61, the door locking device 82, and the vibration switch 31.

In the present embodiment, the outer tube 20 is equipped with a vibration switch 31 that is turned on/off by vibration generated by rotation of the drum 22.

The eccentricity detector 280d detects the deviation (eccentricity) of the laundry in the drum 22 when the drum 22 rotates during the spin-drying process based on the detection signal from the vibration switch 31. Specifically, when the interval between the on times of the on and off signals of the vibration switch 31 is longer than the predetermined time, the eccentricity detection unit 280d detects that the laundry inside the drum 22 is biased to the predetermined bias or more by regarding the vibration of the drum 22 as abnormal vibration. That is, when the laundry is not uniformly stuck to the circumferential wall of drum 22 and the bias is not less than the predetermined amount, eccentricity detecting unit 280d detects that the bias of the laundry in drum 22 is not less than the predetermined bias. In the washing machine of the present embodiment, when the laundry inside drum 22 has a bias equal to or more than a predetermined bias, the spin-drying process is interrupted and the disentangling operation is performed, but when the interruption of the spin-drying process is repeated twice or more a predetermined number of times, the spin-drying process is stopped.

The washing machine of the present embodiment can achieve the same effects as the washing machine 1 of the first embodiment.

The washing machine of the embodiment comprises: a water supply path 51 for supplying normal water to the drum 22 disposed in the washing machine main body 10; an ozone water supply path 52 for supplying ozone water to the drum 22; an ozone electrode 63 for generating ozone in the ozone supply path 52; a hot water supply path 53 for supplying hot water to the drum 22; and an eccentricity detector 280d as eccentricity detector for detecting the deviation of the laundry in the drum 22, wherein the washing machine performs a sterilization rinsing process after performing a dehydration process, and when the dehydration process is stopped due to the deviation of the laundry detected by the eccentricity detector 280d during the dehydration process being equal to or more than a predetermined deviation, hot water is supplied from the hot water supply passage 53 to the drum 22, wherein the sterilization rinsing process is performed in a state where ozone water is supplied from the ozone water supply passage 52 to the drum 22.

Thus, in the washing machine of the present embodiment, when the dewatering process is stopped due to a large bias of the laundry, the supply of hot water to drum 22 promotes the decomposition of ozone in drum 22, thereby shortening the time required for the ozone concentration in drum 22 to be sufficiently reduced.

Although the embodiments of the present invention have been described above, the specific configurations of the respective portions are not limited to the above-described embodiments.

In the first to third embodiments, the drum 22 rotates about the rotation shaft extending in the oblique direction with respect to the horizontal direction, but the drum 22 may rotate about the rotation shaft extending in the horizontal direction. Further, the present invention can be applied to a washing machine having a drum that rotates about a rotation shaft extending in a vertical direction.

In the second embodiment, the water temperature detected by the water temperature detection sensor 85 for detecting the water temperature in the drum 22 is set as the supply water temperature, which is the temperature of the water supplied to the ozone electrode 63 during the aseptic rinsing process, but the following may be used: for example, the concentrated introduction unit 57 is provided with a feed water temperature sensor for detecting the temperature of water supplied into the drum 22, and the water temperature detected by this feed water temperature sensor is used as the feed water temperature, which is the temperature of water supplied to the ozone electrode 63 when the aseptic rinsing process is performed. The ozone water supply path 52 may be provided with a water supply temperature sensor for detecting the temperature of the water supplied to the ozone electrode 63.

In the above embodiment, the shortening speed of fig. 5, the door locking time of fig. 10, the shortening speed correction value of fig. 11, and the shortening speed correction value of fig. 12 are switched in three stages, but the number of switching stages is not limited to this.

In the above embodiment, the washing machine 1 having no drying function has been described, but the present invention can be applied to a washing machine having a drying function.

Claims

A washing machine is characterized by comprising:

a water supply path for supplying water to the drum arranged in the washing machine main body;

an ozone water supply path for supplying ozone water to the drum;

an ozone electrode for generating ozone in the ozone water supply path;

a hot water supply path for supplying hot water to the drum; and

a control unit for controlling a door locking device which can switch a door arranged on the washing machine main body to a locking state or an unlocking state,

and performing a hot water supply rinsing process in a state in which hot water is supplied from the hot water supply line to the drum after performing a sterilization rinsing process in which rinsing is performed in a state in which ozone water is supplied from the ozone supply line into the drum.
The washing machine according to claim 1, characterized by comprising:

a door locking time determination unit determining a door locking time for maintaining the door in a locked state after the degerming rinsing process is performed; and

a shortening speed determination unit determining a shortening speed of the door locking time according to a temperature of water in the drum during the hot water supply rinsing,

the shortening speed determining unit determines the shortening speed in such a manner that the shortening speed is faster as the temperature of the water in the drum during the hot water supply rinsing is higher.
The washing machine according to claim 2, characterized by comprising:

a shortening speed correction unit correcting the shortening speed such that the shortening speed is faster as the water level in the drum is higher during the hot water supply rinsing.
The washing machine according to claim 2, characterized by comprising:

a shortening speed correction unit correcting the shortening speed such that the shortening speed is faster as the rinsing time in the hot water supply rinsing process is longer.
A washing machine is characterized by comprising:

a water supply path for supplying water to the drum arranged in the washing machine main body;

an ozone water supply path for supplying ozone water to the drum;

an ozone electrode for generating ozone in the ozone water supply path;

a hot water supply path for supplying hot water to the drum; and

an eccentricity detecting unit for detecting the bias of the washings in the drum,

performing a sterilizing rinsing process, which is a process of performing rinsing in a state where ozone water is supplied from the ozone water supply line into the drum, and then performing a dehydrating process,

when the laundry detected by the eccentricity detecting means during the spin-drying process is biased to a predetermined bias or more and the spin-drying process is stopped, hot water is supplied from the hot water supply path to the drum.
A washing machine is characterized by comprising:

a water supply path for supplying water to the drum arranged in the washing machine main body;

an ozone water supply path for supplying ozone water to the drum;

an ozone electrode for generating ozone in the ozone water supply path;

a hot water supply path for supplying hot water to the drum;

a water temperature detection sensor for detecting a water temperature in the drum;

a control unit that controls a door lock device that switches a door provided to the washing machine main body so as to be openable and closable to a locked state or an unlocked state;

a door locking time determination unit that determines a door locking time for maintaining the door in a locked state according to a water temperature in the drum during a sterilization rinsing process in which rinsing is performed in a state in which ozone water is supplied from the ozone water supply line into the drum;

a first shortening speed determining unit that determines a first shortening speed of the door locking time according to a water temperature in the drum during the sterilizing rinsing; and

a second shortening speed determining unit that determines a second shortening speed of the door locking time according to a temperature of water in the drum during a hot water supply rinsing process performed in a state in which hot water is supplied from the hot water supply path to the drum after the degerming rinsing process is performed,

the door locking time is shortened according to the first shortening speed after the degerming rinsing process is performed until the hot water supply rinsing process is performed, and the door locking time is shortened according to the second shortening speed after the hot water supply rinsing process is performed.