JP2017038771A - Drum type washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum type washing machine capable of improving convenience by suppressing increase in power consumption.SOLUTION: A drum type washing machine 1 includes: a housing 2 having an input port 2a in which laundry W is inputted; a door 3 having a see-through window 31 and for opening/closing the input port 2a; a water tub 4 elastically supported in the housing 2 and for storing water; a drum 5 laterally provided in the water tub 4 by a rotation axis R being disposed in a cross direction, and for accommodating the laundry W inputted from the input port 2a; an illumination part 10 for illuminating the drum 5; a human detection sensor 60 for detecting a human body indoors; and an illuminance sensor 50 for detecting the illuminance indoors. The drum type washing machine lights the illumination part 10 when detecting a human body by the human detection sensor 60. According to the detection result of the illuminance sensor 50, control regarding lighting start of the illumination part 10 is switched.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a drum type washing machine that rotates a drum to wash clothes and the like.

  A conventional drum type washing machine is disclosed in Patent Document 1. This drum type washing machine has a water tank, a drum, and a circulation duct in a housing installed indoors. The housing has a loading slot into which the laundry is loaded, and the loading slot is opened and closed by a door having a transparent window. The water tank is supported in the housing and collects water inside. The drum is disposed horizontally in the water tank with the rotating shaft in the front-rear direction, and accommodates laundry such as clothes thrown in from the charging port. The circulation duct is arranged outside the water tank, and connects the air suction port and the air outlet provided in the water tank. In the circulation duct, a dehumidifier, a blower, and a heater are sequentially arranged from the suction port toward the blowout port (from the upstream side to the downstream side of the airflow). Further, a drainage passage is led out from the lower end of the water tank toward the outside of the housing, and the drainage passage has a drainage valve. By opening the drain valve, the water in the tank is drained to the outside of the housing.

  An illumination unit is provided on the front surface of the housing 2 so as to surround the door. The illumination unit emits light toward the outside of the housing. A human sensor and an illuminance sensor are provided in the upper part of the front surface of the housing. The human sensor detects the human body in the room, and the illuminance sensor detects the illuminance in the room. In addition, an operation unit is provided at the upper front of the housing.

  In the drum-type washing machine having the above-described configuration, the washing operation is performed by operating the operation unit. In the washing operation, a washing process, a rinsing process, and a dehydrating process are sequentially performed. Moreover, a drying process is performed by operation of an operation part. At this time, the illumination unit emits light by switching the emission color for each process. Thereby, the user can easily grasp the process being executed.

  At this time, when a human body is present in the room, the illumination unit is turned on with a predetermined luminance. When no human body is present in the room, the illumination unit is turned on with a lower luminance than the predetermined luminance. In addition, when the illuminance in the room is higher than the predetermined illuminance, the illumination unit is turned on with a predetermined luminance. When the indoor illuminance is lower than the predetermined illuminance, the illumination unit is turned on with a lower luminance than the predetermined luminance. .

JP 2014-97267 A (Pages 7 to 10, FIGS. 1 to 3 and 6)

  However, according to the conventional drum-type washing machine, if the brightness of the illumination unit is increased slowly when a human body is detected in a bright room and when a human body is detected in a dark room, a user who has entered the dark room It took time to grasp the process being executed, and there was a problem that the convenience was poor. On the other hand, there is a problem in that power consumption increases when the luminance of the illumination unit is increased quickly when a human body is detected in a bright room and when a human body is detected in a dark room.

  An object of this invention is to provide the drum type washing machine which can suppress the increase in power consumption and can improve the convenience.

  In order to achieve the above object, the present invention provides a housing having a loading slot into which laundry is thrown in, a door having a see-through window for opening and closing the loading slot, and a water elastically supported in the casing. A water tub for storing laundry, a drum that is horizontally installed in the water tub with a rotating shaft in the front-rear direction, and that houses laundry put in from the charging port, an illumination unit that illuminates the interior of the drum, and an indoor In a drum-type washing machine that includes a human sensor that detects a human body and an illuminance sensor that detects an illuminance in a room, and when the human sensor is detected by the human sensor, the detection result of the illuminance sensor The control relating to the lighting start of the illumination unit is switched according to the above.

  According to this configuration, the washing operation is executed by storing water in the water tank, storing laundry such as clothes in the drum, and rotating the drum. When a human body is detected during the washing operation, the illumination unit is turned on. At this time, control relating to the start of lighting of the illumination unit is switched according to the illuminance in the room.

  According to the present invention, in the drum type washing machine having the above-described configuration, from the detection of the human body by the human sensor to the lighting of the illumination unit, when the indoor illuminance is lower than the predetermined first illuminance during the washing operation, It is preferable to shorten the time.

  In the drum-type washing machine having the above-described configuration, it is preferable that the detection distance of the human sensor is longer than that when the indoor illuminance is lower than the predetermined first illuminance during the washing operation.

  Further, in the drum type washing machine having the above-described configuration, the drum type washing machine is notified by blinking of the illumination unit at the end of the washing operation, and the illumination unit has a higher illuminance than when the indoor illuminance is lower than a predetermined second illuminance. It is preferable to lengthen the blinking cycle.

  In the drum-type washing machine having the above-described configuration, it is preferable that the luminance of the illumination unit be lower than when the indoor illuminance is lower than the predetermined third illuminance.

  In the drum-type washing machine having the above-described configuration, the present invention provides a water supply section for supplying water to the water tank, a drainage passage having a drainage valve for draining water in the tank, and downstream of the drainage valve in the drainage passage. And an overflow pipe connecting an outlet opening at a predetermined upper limit water level of the water tank, and an ion sending part for sending ions to the water tank, and after draining the water in the water tank by opening the drain valve It is preferable to have a sterilization mode in which the ion delivery unit is driven for a predetermined time, and to supply and drain the water tank after the sterilization mode ends.

  In the drum type washing machine having the above-described configuration, it is preferable that the illumination unit is turned on when a human body is detected during execution of the sterilization mode.

  In the drum-type washing machine having the above-described configuration, it is preferable that the light emission color of the illumination unit in the sterilization mode is different from that during the washing operation.

  In the drum type washing machine configured as described above, it is preferable that the sterilization mode is continuously performed after the washing operation is completed.

  According to the present invention, when the human body is detected by the human sensor that detects the human body in the room, the illumination unit that illuminates the inside of the drum is turned on. Thereby, when the user exists in the room, the illumination unit is turned on, and when the user is absent, the illumination unit is not turned on. Moreover, the control regarding the lighting start of an illumination part is switched according to the detection result of the illumination intensity sensor which detects indoor illumination intensity. Thereby, when the indoor human body is detected, for example, when the room is dark, the illumination unit is turned on earlier than when the room is bright. Therefore, it is possible to improve convenience by suppressing an increase in power consumption of the drum type washing machine.

The perspective view which shows the drum type washing machine of 1st Embodiment of this invention. Sectional drawing of right side of drum type washing machine of 1st Embodiment of this invention The block diagram which shows the structure of the drum type washing machine of 1st Embodiment of this invention. The flowchart which shows the lighting operation | movement of the illumination part of the drum type washing machine of 1st Embodiment of this invention. The flowchart which shows the lighting time determination process at the time of lighting operation of the illumination part of the drum type washing machine of 1st Embodiment of this invention. The flowchart which shows the blink period determination process at the time of lighting operation of the illumination part of the drum type washing machine of 1st Embodiment of this invention. The flowchart which shows the disinfection mode of the drum type washing machine of 1st Embodiment of this invention. The flowchart which shows the drain trap recovery operation | movement of the drum type washing machine of 1st Embodiment of this invention. The flowchart which shows the lighting time determination process at the time of lighting operation of the illumination part of the drum type washing machine of 2nd Embodiment of this invention. The flowchart which shows the lighting time determination process at the time of lighting operation of the illumination part of the drum type washing machine of 3rd Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the drum type washing machine of the first embodiment. The drum type washing machine 1 has a housing 2 installed indoors. The front surface of the housing 2 is provided with a loading port 2a (see FIG. 2) for loading laundry, and the loading port 2a is opened and closed by a door 3 having a see-through window 31 in which a glass plate or the like is fitted. A water supply port 13 is opened at the rear of the upper surface of the housing 2. The water supply port 13 is connected to city water (such as tap water) through a hose (not shown).

  An operation unit 21, an illuminance sensor 50, and a human sensor 60 are provided at the front end of the upper surface of the housing 2. The operation unit 21 includes operation buttons (not shown) and a display panel (not shown). A washing operation and a sterilization mode described later can be executed by operating the operation unit 21.

  The illuminance sensor 50 detects the illuminance in the room. The human sensor 60 includes, for example, an infrared sensor, and detects a human body in the room. Since the illuminance sensor 50 and the human sensor 60 are arranged above the door 3, the illuminance sensor 50 and the human sensor 60 can be prevented from being damaged when the laundry W is put in and out through the insertion port 2 a. Further, since the human sensor 60 is disposed on the upper portion of the housing 2, it is possible to easily detect a human body away from the housing 2.

  FIG. 2 is a right side sectional view of the drum type washing machine 1. A bottomed cylindrical water tank 4 having an opening 4a on the front surface is provided horizontally in the housing 2. The water tank 4 is elastically supported in the housing 2 by a damper 9 and can store water therein. A packing (not shown) formed of an elastic body such as rubber is provided on the periphery of the opening 4a.

  Inside the water tank 4, a bottomed cylindrical drum 5 having an opening 5a on the front surface is provided horizontally. The drum 5 is formed of, for example, a stainless steel plate, and an annular fluid balancer 7 is provided around the front end. The fluid balancer 7 is fixed to the drum 5 and is rotated together with the drum 5 by a motor 6 described later.

  A plurality of small holes 5 b are opened on the peripheral surface of the drum 5. Thereby, water and air can circulate between the water tank 4 and the drum 5. A plurality of baffles (not shown) extending in the direction of the rotation axis R are arranged on the inner peripheral surface of the drum 5. For example, three baffles are provided so as to protrude toward the inside of the drum 5 so as to be equally spaced in the circumferential direction of the drum 5.

  A motor 6 is disposed behind the water tank 4. A shaft portion (not shown) of the motor 6 passes through the water tank 4 and is connected to the drum 5. The drum 5 rotates around the rotation axis R by driving the motor 6. The rotation axis R is arranged in the front-rear direction and is inclined so as to become lower as it goes rearward. Thereby, the user standing in front of the housing 2 can easily visually recognize the rear part in the drum 5. The drum 5 may be arranged so that the rotation axis R is horizontal.

  The door 3 can be opened and the laundry W can be accommodated in the drum 5 through the inlet 2a and the openings 4a and 5a. The user can easily visually recognize the laundry W in the drum 5 through the see-through window 31. Further, when the door 3 is closed, the packing closely adheres to the peripheral edge of the door 3. Thereby, it is possible to prevent leakage of water from the water tank 4 through the opening 4a during the washing operation of the drum type washing machine 1.

  An air inlet (not shown) and an outlet (not shown) are opened at the rear end and the front of the water tank 4, respectively. The inlet and the outlet are connected by a circulation duct 25 arranged outside the water tank 4. In the circulation duct 25, a cooler 26, a heater 27, a blower 28, and an ion generator 29 are sequentially arranged from the suction port toward the blowout port (from the upstream side to the downstream side of the airflow). The air in the water tank 4 is circulated through the circulation duct 25 as indicated by an arrow A by driving the blower 28.

The ion generator 29 has an electrode (not shown) facing the circulation duct 25. A voltage having an AC waveform or an impulse waveform is applied to the electrodes. When the applied voltage of the electrode is a positive voltage, positive ions mainly composed of H ⁺ (H ₂ O) m are generated, and when the voltage is negative, negative ions mainly composed of O ₂ ⁻ (H ₂ O) n are generated. Here, m and n are integers. H ⁺ (H ₂ O) m and O ₂ ⁻ (H ₂ O) n aggregate on the surface of airborne bacteria and odor components and surround them. The blower 28 and the ion generating part 29 constitute an ion sending part for sending ions to the water tank 4.

Then, as shown in the formulas (1) to (3), the active species [.OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) are aggregated and formed on the surface of the microorganism or the like by collision. Destroy airborne bacteria. Here, m ′ and n ′ are integers. Therefore, the ion sending part generates positive ions and negative ions and sends them into the circulation duct 25, so that the water tank 4 and the drum 5 can be sterilized and odor removed.

H ⁺ (H ₂ O) m + O ₂ ⁻ (H ₂ O) n → OH + 1 / 2O ₂ + (m + n) H ₂ O (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 OH + O ₂ + (m + m ′ + n + n ′) H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m ′ + n + n ′) H ₂ O (3)

  In the drying process described later, the cooler 26 cools and dehumidifies the air that has entered the circulation duct 25 from the suction port, and the heater 27 heats the air dehumidified by the cooler 26.

  An illumination unit 10 and a human sensor 61 (see FIG. 3) are provided at the upper end of the opening 4 a of the water tank 4 so as to protrude into the drum 5. The illumination unit 10 is composed of, for example, an LED and illuminates the inside of the drum 5. The human sensor 61 is composed of an infrared sensor, for example, and detects a user's arm or the like that has entered the drum 5. Thereby, the drum type washing machine 1 can determine whether or not the laundry W is left in the drum 5 after the washing operation or after the drying process. The lighting unit 10 and the human sensor 61 are waterproofed.

  A water supply passage 15 that connects the water supply port 13 and the inlet 4 b of the water tank 4 is provided in the upper part of the housing 2. A water supply valve 12 and a detergent chamber 16 are provided in the water supply passage 15. By opening the water supply valve 12, water can be supplied into the water tank 4. The detergent chamber 16 is opened and closed by a lid (not shown) provided on the upper surface of the housing 2 and stores laundry detergent, bleach and softener. The water supply port 13, the water supply passage 15, and the water supply valve 12 constitute a water supply unit that supplies water to the water tank 4.

  A drainage passage 41 is led out from the lower end of the rear portion of the water tank 4 toward the outside of the housing 2. A drain valve 42 is provided in the drain passage 41. By opening the drain valve 42, the water in the water tank 4 is drained to the outside of the housing 2 through the drain passage 41. The drainage passage 41 and the drainage valve 42 constitute a drainage section that drains the water in the water tank 4.

  A drainage passage 41 led out of the housing 2 is connected to one end of a drainage trap 43 provided under the floor F in the room. Sealed water SW is collected in the drain trap 43. Thereby, the bad smell from a sewer pipe and the entrance of a pest can be prevented.

  An outlet (not shown) is provided at a predetermined upper limit water level of the water tank 4, and an overflow pipe 45 is led out from the outlet. The overflow pipe 45 is connected to a drain passage 41 between the drain valve 42 and the drain trap 43. When the water level of the water tank 4 rises and water reaches the outlet, the water is discharged to the outside of the housing 2 through the overflow pipe 45 and the drainage passage 41. Thereby, the water level in the water tank 4 can be maintained below an upper limit water level.

  FIG. 3 is a block diagram showing the configuration of the drum type washing machine 1. The drum type washing machine 1 has a control unit 100 including a CPU that controls each unit. Human sensors 60 and 61, illuminance sensor 50, operation unit 21, illumination unit 10, drain valve 42, water supply valve 12, motor 6, and storage unit 40 are connected to the control unit 100. The storage unit 40 stores a control program for the drum type washing machine 1 and also stores calculation results by the control unit 100 and detection results of the human sensors 60 and 61, the illuminance sensor 50, and the like.

  In the drum-type washing machine 1 configured as described above, the washing operation is performed by the operation of the operation unit 21 by the user. In the washing operation, a washing process, a rinsing process, and a dehydrating process are sequentially performed. It is also possible to execute only the process selected by operating the operation unit 21.

  Further, the drying process and the sterilization mode can be selected and executed by operating the operation unit 21. As will be described later, the drain trap recovery operation is continuously performed after the end of the sterilization mode.

  In the washing step, the laundry W is washed by rotating the drum 5 loaded with the laundry W and the detergent after the water supply unit supplies the water tank 4 with water. In the rinsing process, after washing water in the water tank 4 and the drum 5 (water at the time of the washing process) is drained and supplied again, the drum 5 containing the laundry W is rotated to rinse the laundry W. During the washing step and the rinsing step, the laundry W is stirred by the baffle.

  In the dehydration process, after the water in the water tank 4 and the drum 5 (water during the rinsing process) is drained, the drum 5 containing the laundry W is washed and rinsed with the drain valve 42 opened. Rotate faster. Thereby, the laundry W can be dehydrated. The washing operation ends when the dehydration process ends. When the user opens the door 3 and puts his arm into the drum 5, the human sensor 61 detects it. Thereby, the drum type washing machine 1 can determine that the laundry W has been collected.

  FIG. 4 is a flowchart showing the lighting operation of the illumination unit 10 during the washing operation. When the washing operation of the drum type washing machine 1 is instructed by the operation of the operation unit 21, the human sensors 60 and 61 and the illuminance sensor 50 are driven, and the washing operation and the lighting operation of the illumination unit 10 are performed in parallel. .

  In step # 11, it is determined whether or not the illumination unit 10 is lit. When the illumination unit 10 is not lit, the process proceeds to step # 12, and when it is lit, the process proceeds to step # 14. In step # 14, it is determined whether a human body exists in the room (whether a human body is detected in the room). If there is a human body in the room, the process proceeds to step # 16. If no human body exists, the process proceeds to step # 15, and the illumination unit 10 is turned off.

  In step # 12, it is determined whether or not a human body exists in the room. If there is a human body, the process proceeds to step # 13, and if not, the process proceeds to step # 16.

  In step # 16, it is determined whether or not the washing operation is stopped. When the washing operation is stopped, the process proceeds to step # 17. When the washing operation is not stopped, the process returns to step # 11 and steps # 11 to # 16 are repeated.

  FIG. 5 is a flowchart showing the lighting timing determination process in step # 13 of FIG. In step # 31, it is determined whether or not the room illuminance L is equal to or higher than a predetermined determination illuminance LH1 (500 lux in the present embodiment). When the illuminance L is not equal to or greater than the determination illuminance LH1, the process proceeds to step # 32. When the illuminance L is equal to or greater than the determination illuminance LH1, the process returns to step # 16 in FIG.

  In step # 32, it is determined whether or not the illuminance L is equal to or higher than a predetermined determination illuminance LM1 (first illuminance, 100 lux in the present embodiment). If the illuminance L is greater than or equal to the determined illuminance LM1, the process proceeds to step # 33, and if not, the process proceeds to step # 34.

  In step # 33, it waits until the time T from the human body detection by the human sensor 60 reaches the predetermined lighting start time TL (in this embodiment, 10 seconds). In Step # 34, the process waits until the time T reaches a predetermined lighting start time TS (2 seconds in the present embodiment). The lighting start time TS is set to a time shorter than the lighting start time TL, and may be set to 0 seconds.

  When the time T reaches the lighting start times TL and TS in steps # 33 and # 34, the process proceeds to step # 39. In step # 39, the illumination unit 10 is turned on. Thereby, since the inside of the drum 5 is illuminated, the user can easily recognize the state of the laundry W in the drum 5 during the washing operation through the see-through window 31. Moreover, since the emitted light of the illumination unit 10 reaches the outside of the housing 2 through the see-through window 31, the user can easily recognize the execution of the washing operation.

  Moreover, since the illumination part 10 lights up when a human body exists in the room and does not light up when there is no human body, an increase in power consumption of the drum type washing machine 1 can be suppressed. Further, the time from the detection of the human body by the human sensor 60 to the lighting of the illumination unit 10 is shortened compared to the case where the illuminance L in the room is lower than the determination illuminance LM1 during the washing operation. Thereby, the lighting timing of the illumination unit 10 is switched according to the detection result of the illuminance sensor 50 (control regarding lighting start is switched), and the user can quickly check the state in the drum 5 when the room is dark. Can do. In addition, when the room is bright, the illumination unit 10 is turned on later than when it is dark. Therefore, the user checks the outline of the state in the drum 5 with the illumination unit 10 turned off, and then the drum is turned on with the illumination unit 10 turned on. 5 can be fully confirmed. Therefore, an increase in power consumption of the drum type washing machine 1 can be suppressed and convenience can be improved.

  In step # 17, the process waits until a human body in the room is detected. When a human body in the room is detected, the process proceeds to step # 18.

  FIG. 6 is a flowchart showing the blinking cycle determination process in step # 18 of FIG. In step # 51, it is determined whether or not the room illuminance L is equal to or higher than a predetermined determination illuminance LH2 (500 lux in the present embodiment). If the illuminance L is greater than or equal to the determined illuminance LH2, the process proceeds to step # 53. If not greater than the determined illuminance LH2, the process proceeds to step # 52.

  In step # 52, it is determined whether or not the illuminance L is equal to or higher than a predetermined determination illuminance LM2 (second illuminance, 100 lux in the present embodiment). If the illuminance L is greater than or equal to the determined illuminance LM2, the process proceeds to step # 54, and if not, the process proceeds to step # 55. The determination illuminances LH2 and LM2 may be the same as or different from the determination illuminances LH1 and LM1, respectively.

  In step # 53 to step # 55, the illumination unit 10 blinks at a predetermined blinking cycle. The blinking cycle of step # 53, the blinking cycle of step # 54, and the blinking cycle of step # 55 are set longer in order, and in this embodiment, they are set to 0.5 seconds, 1 second, and 2 seconds, respectively.

  Thereby, since it alert | reports by blinking of the illumination part 10 at the time of completion | finish of a washing operation, the user can recognize easily the completion | finish of a washing operation. Further, the blinking cycle of the illumination unit 10 is made longer than when the indoor illuminance L is lower than the determination illuminance LM2 than when it is high. Thereby, it is possible to easily recognize the end of the washing operation while reducing glare for a user in a dark room. On the other hand, when the room is bright, the blinking cycle of the illumination unit 10 is short, so that the user can easily recognize the blinking of the illumination unit 10 even in a bright room.

  After step # 53 to step # 55, the process returns to step # 19 in FIG. In step # 19, it is determined whether or not a predetermined time (10 seconds in the present embodiment) has elapsed. When the predetermined time has not elapsed, the process proceeds to step # 20, and when the predetermined time has elapsed, the lighting operation of the illumination unit 10 ends.

  In step # 20, it is determined whether or not a human body exists in the room. If there is a human body in the room, the process returns to step # 19 and step # 19 and step # 20 are repeated. When the human body does not exist in the room, the lighting operation of the illumination unit 10 ends.

  In the drying process after the end of the washing operation, the cooler 26, the heater 27, and the blower 28 are driven, and the drum 5 containing the laundry W is rotated. At this time, the humid air in the drum 5 is sucked into the circulation duct 25 through the suction port of the water tank 4 and dehumidified by the cooler 26. The dehumidified air is heated by the heater 27 and then sent into the drum 5 through the outlet of the water tank 4. Thereby, the laundry W in the drum 5 can be dried.

  FIG. 7 is a flowchart showing the operation of the sterilization mode for sterilizing the water tank 4 and the drum 5. The sterilization mode is continuously performed after the end of the washing operation. In step # 61, the blower 28 is driven. In step # 62, the ion generator 29 is driven. At this time, the cooler 26 and the heater 27 are not driven. The air containing the ions generated by the ion generator 29 is sent through the circulation duct 25 and then into the water tank 4 and the drum 5. In addition, a part of the air containing ions that circulates in the circulation duct 25 flows into the drainage passage 41 from the water tank 4 through the overflow pipe 45. Thereby, the water tank 4, the drum 5, the circulation duct 25, the overflow pipe 45, and the drainage passage 41 are sterilized.

  In step # 63, the process waits until a predetermined time (in this embodiment, 20 minutes) elapses. When the predetermined time has elapsed, the process proceeds to step # 64, and the ion generating unit 29 is stopped. In step # 65, the blower 28 is stopped and the sterilization mode is ended.

  In the sterilization mode, the air sent from the blower 28 flows into the drain trap 43 through the overflow pipe 45 and the drain passage 41. For this reason, the sealing water SW accumulated in the drain trap 43 may be washed away, and the water seal of the drain trap 43 may be broken. Therefore, in this embodiment, the drain trap recovery operation is continuously executed after the sterilization mode is completed.

  FIG. 8 is a flowchart showing a drain trap recovery operation for recovering the water seal of the drain trap 43. In step # 71, the drain valve 42 is opened. In step # 72, the water supply valve 12 is opened. In step # 73, the process waits until a predetermined time (3 minutes in the present embodiment) elapses. When the predetermined time has elapsed, the process proceeds to step # 74 and the water supply valve 12 is closed. In step # 75, the process waits until a predetermined time (in this embodiment, 3 minutes) elapses. When the predetermined time elapses, the process proceeds to step # 76 and the drain valve 42 is closed. Thereby, the sealing water SW can be stored in the drain trap 43, and the water seal of the drain trap 43 can be recovered.

  According to this embodiment, when the human sensor 60 detects a human body, the illumination unit 10 that illuminates the inside of the drum 5 is turned on. Thereby, the user can easily confirm the state of the laundry W in the drum 5. Moreover, since the illumination part 10 is not turned on when the user is not present in the room, an increase in power consumption of the drum type washing machine 1 can be suppressed.

  In addition, the time from the detection of the human body by the human sensor 60 to the lighting of the illumination unit 10 is shortened compared to the case where the illuminance L in the room is lower than the determination illuminance LM1 (first illuminance) during the washing operation. Thereby, the lighting timing of the illumination unit 10 is switched according to the detection result of the illuminance sensor 50 (control regarding lighting start is switched), and the user can quickly check the state in the drum 5 when the room is dark. Can do. In addition, when the room is bright, the illumination unit 10 is turned on later than when it is dark. Therefore, the user checks the outline of the state in the drum 5 with the illumination unit 10 turned off, and then the drum is turned on with the illumination unit 10 turned on. 5 can be fully confirmed. Therefore, an increase in power consumption of the drum type washing machine 1 can be suppressed and convenience can be improved.

  Moreover, it alert | reports by blinking of the illumination part 10 at the time of completion | finish of a washing operation, and the blinking period of the illumination part 10 is made longer than the case where it is high when the indoor illumination intensity L is lower than the determination illumination intensity LM2 (2nd illumination intensity). Thereby, it is possible to easily recognize the end of the washing operation while reducing glare for a user in a dark room.

  It should be noted that the lighting unit 10 may have a shorter blinking cycle than when the illuminance L is lower than the determination illuminance LM2, but the illumination unit 10 may have a shorter blinking period than when the illuminance L is lower than the determination illuminance LM2. Longer blinking cycle is more desirable because it can reduce glare.

  The drum-type washing machine described in Patent Document 1 has a circulation duct that is arranged outside the aquarium and circulates the air in the aquarium, a blower that is arranged in the circulation duct, a drain valve, and has water in the aquarium. And a drainage passage for draining. In general, the drum type washing machine includes an overflow pipe connecting a downstream of a drain valve of the drain passage and an outlet opening at a predetermined upper limit water level of the water tank. When the blower is driven in a drying process or the like, the air sent from the blower may flow into the drain trap via the overflow pipe and the drain passage, and the drain trap may be broken. For this reason, there was a problem that the usability of the drum type washing machine was lowered.

  In this embodiment, after the drain valve 42 is opened and the water in the water tank 4 is drained, the water supply and drainage of the water tank 4 are performed after the end of the sterilization mode in which the blower 28 and the ion generator 29 are driven for a predetermined time. Thereby, the water tank 4 and the drum 5 can be sterilized by ions, and the water seal of the drain trap 43 can be easily recovered. Therefore, the usability of the drum type washing machine 1 can be improved.

  In addition, since the sterilization mode is continuously performed after the washing operation is finished, it is possible to easily prevent the outside of the drum 5 and the mold of the water tank 4 from breeding.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 9 shows a flowchart of the lighting timing determination process of the drum type washing machine of the second embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In this embodiment, the lighting timing determination process is different from that of the first embodiment. Other parts are the same as those in the first embodiment.

  The human sensor 60 is configured to change the detection distance according to the detection result of the illuminance sensor 50. In the present embodiment, step # 12 of FIG. 4 is omitted. In step # 35 of FIG. 9, it is determined whether or not the distance D between the human body and the human sensor 60 is equal to or less than a predetermined detection distance DS (1 m in the present embodiment). When the distance D is equal to or less than the detection distance DS, the process proceeds to step # 39 and the illumination unit 10 is turned on. When the distance D is not equal to or less than the detection distance DS, the process proceeds to step # 36.

  In step # 36, it is determined whether or not a predetermined time (30 seconds in this embodiment) has elapsed. If the predetermined time has not elapsed, the process returns to step # 35, and if the predetermined time has elapsed, the process returns to step # 16 in FIG.

  In step # 37, it is determined whether or not the distance D is equal to or less than a predetermined detection distance DL (2 m in the present embodiment). The detection distance DL is set longer than the detection distance DS. If the distance D is equal to or less than the detection distance DL, the process proceeds to step # 39, and the illumination unit 10 is turned on. If the distance D is not equal to or less than the detection distance DL, the process proceeds to step # 38.

  In step # 38, it is determined whether or not a predetermined time (30 seconds in the present embodiment) has elapsed. If the predetermined time has not elapsed, the process returns to step # 37, and if the predetermined time has elapsed, the process returns to step # 16 in FIG.

  In the second embodiment, the same effect as in the first embodiment can be obtained. In addition, the detection distance of the human sensor 60 is made longer when the illuminance L in the room is lower than the determination illuminance LM1 during the washing operation than when the illuminance L is high. Thereby, the lighting timing of the illumination unit 10 is switched according to the detection result of the illuminance sensor 50 (control related to the start of lighting is switched), and the illumination unit even when the user is far away from the housing 2 when the room is dark 10 is lit. Therefore, the convenience of the drum type washing machine 1 can be improved. When the room is bright, the illumination unit 10 is not turned on unless the user approaches the casing 2. Therefore, an increase in power consumption of the drum type washing machine 1 can be suppressed.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 10 shows a flowchart of the lighting timing determination process of the drum type washing machine of the third embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that the luminance of the illumination unit 10 is switched according to the illuminance L in the room. Other parts are the same as those in the first embodiment.

  When the time T reaches the lighting start time TL in step # 33, the process proceeds to step # 40, and the illumination unit 10 is lit with the first luminance. When the time T reaches the lighting start time TS in step # 34, the process proceeds to step # 41, and the illumination unit 10 is turned on with the second luminance. Note that the second luminance is set lower than the first luminance.

  In the third embodiment, the same effect as in the first embodiment can be obtained. Moreover, the brightness | luminance of the illumination part 10 is made lower than the case where it is high when the indoor illumination intensity L is lower than the determination illumination intensity LM1 (3rd illumination intensity). Thereby, since the brightness | luminance of the illumination part 10 becomes low when the room is dark, a user's dark adaptation is not prevented. Therefore, the user who confirmed the state in the drum 5 in a dark room can easily walk, and the safety of the drum type washing machine 1 can be improved. The determination illuminances LH1 and LM1 of the present embodiment may be the same as or different from the determination illuminances LH1 and LM1 of the first embodiment, respectively.

  In the second embodiment, the luminance of the illumination unit 10 may be lower than when the indoor illuminance L is higher than the determination illuminance LM1 when it is higher.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described. In 4th Embodiment, the time which performs lighting operation of the illumination part 10 differs from 1st Embodiment. Other parts are the same as those in the first embodiment.

  In 4th Embodiment, the lighting operation of the illumination part 10 of FIG. 4 is performed at the time of execution of sterilization mode. Thereby, the user can easily recognize the execution of the sterilization mode. The luminescent color of the illuminating unit 10 during the sterilization mode may be the same as the luminescent color of the illuminating unit 10 during the washing operation, but the luminescent color (for example, blue) of the illuminating unit 10 during the sterilization mode is the illuminating unit during the washing operation. When the light emission color is different from 10 (for example, green), the user can more easily recognize the execution of the sterilization mode, which is more desirable.

  In this embodiment, the same effect as that of the first embodiment can be obtained. In addition, the lighting unit 10 is turned on when a human body is detected during the execution of the sterilization mode. Thereby, the user can easily recognize the execution of the sterilization mode. In addition, when the luminescent color of the illumination unit 10 in the sterilization mode is different from that during the washing operation, the user can more easily recognize the execution of the sterilization mode.

  In the second embodiment and the third embodiment, the illumination unit 10 may be turned on when a human body is detected during the execution of the sterilization mode.

  Moreover, in 1st Embodiment-4th Embodiment, you may perform drainage trap recovery | restoration operation | movement continuously after completion | finish of a drying process. In addition, the drain trap recovery operation may be continuously performed after the end of the air blowing operation in which the driving of the cooler 26, the heater 27, and the ion generation unit 29 is stopped to drive the blower 28. That is, the drain trap recovery operation may be executed continuously after the process of driving the blower 28 is completed.

  INDUSTRIAL APPLICABILITY The present invention can be used in a drum type washing machine that rotates a drum to wash clothes and the like.

DESCRIPTION OF SYMBOLS 1 Drum type washing machine 2 Case 2a Input port 3 Door 4 Water tank 4a Opening part 5 Drum 5a Opening part 5b Small hole 6 Motor 7 Fluid balancer 9 Damper 10 Illumination part 12 Water supply valve 26 Cooler 27 Heater 28 Air blower 29 Ion generation Numeral 31 Fluoroscopic window 41 Drain passage 42 Drain valve 43 Drain trap 50 Illuminance sensor 60 Human sensor R Rotating shaft

Claims (9)

A housing having an insertion port into which laundry is introduced, a door having a see-through window that opens and closes the insertion port, a water tank that is elastically supported in the housing and stores water, and a rotating shaft in the front-rear direction A drum that is placed in the water tank and accommodates the laundry put in from the charging port, an illumination unit that illuminates the inside of the drum, a human sensor that detects a human body in the room, In a drum-type washing machine that includes an illuminance sensor that detects illuminance, and lights the illumination unit when a human body is detected by the human sensor,
A drum-type washing machine, wherein the control relating to the lighting start of the illumination unit is switched according to the detection result of the illuminance sensor.   The time from when the human body is detected by the human sensor until the lighting unit is turned on is shorter than when the indoor illuminance is lower than the predetermined first illuminance during the washing operation. The drum type washing machine as described.   2. The drum type washing machine according to claim 1, wherein the detection distance of the human sensor is made longer than that when the indoor illuminance is lower than the predetermined first illuminance during the washing operation.   The flashing cycle of the illumination unit is notified at the end of the washing operation, and the flashing cycle of the illumination unit is set longer than when the indoor illumination level is lower than the predetermined second illumination level. The drum type washing machine according to claim 3.   The drum type washing machine according to any one of claims 1 to 4, wherein the brightness of the illumination unit is lowered when the illuminance in the room is lower than the predetermined third illuminance than when the illuminance is high.   A water supply portion for supplying water to the water tank, a drainage passage having a drainage valve for draining water in the water tank, an outlet opening downstream of the drainage valve in the drainage passage and a predetermined upper limit water level of the water tank, And an ionic disinfection mode for driving the ion delivery unit for a predetermined time after opening the drain valve and draining the water in the aquarium. The drum-type washing machine according to any one of claims 1 to 5, wherein water supply and drainage of the water tank are performed after the end of the sterilization mode.   The drum-type washing machine according to claim 6, wherein when the human body is detected during execution of the sterilization mode, the illumination unit is turned on.   The drum-type washing machine according to claim 7, wherein a light emission color of the illumination unit in the sterilization mode is different from that during the washing operation.   The drum type washing machine according to any one of claims 6 to 8, wherein the sterilization mode is continuously performed after the end of the washing operation.

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