JP4591285B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine that performs washing, rinsing, and dewatering in a rotating drum having a rotation center axis in a horizontal direction or a substantially inclined direction.

  Conventionally, this type of drum type washing machine is configured as shown in FIG. Hereinafter, the configuration will be described.

  As shown in FIG. 6, the rotating drum 1 is provided with a large number of water passage holes 2 on the entire outer periphery thereof, and is rotatably disposed in the outer tub 3. One end of the rotary shaft 4 is fixed in a substantially horizontal direction at the rotation center of the rotary drum 1, and a driven pulley 5 is fixed on the other end of the rotary shaft 4. The first motor 6 rotates the rotating drum 1 at a first rotation speed N1 (for example, 53 r / min) to perform washing or rinsing, and the second motor 7 moves the rotating drum 1 to the first rotation. Dehydration is performed by rotating at a rotation speed N2 of 2 (for example, 1000 r / min).

  The first motor 6 and the second motor 7 are connected to the driven pulley 5 via belts 8 and 9, respectively. The driven pulley 5 has two types of reduction ratios, and the first motor 6 is connected to the driven pulley 5a having a large reduction ratio via the belt 8 to rotate the rotary drum at a low speed, and the second motor 7 is connected to the driven pulley 5a. It is connected to a driven pulley 5b having a small reduction ratio via a belt 9 to realize high-speed rotation of the rotating drum.

  The outer tub 3 is configured by a substantially circular outer tub main body 3 a centering on the rotation shaft 4 and a substantially circular outer tub front plate 3 b covering the opening of the outer tub main body 3 a, and the rotating drum 1. And the rotary drum 1 and the outer tub 3 are configured so that the shape in the direction orthogonal to the rotary shaft 4 is substantially concentric with the rotary shaft 4 as the center, and a substantially concave shape that houses the heater 14 on the bottom side. The heating body accommodating chamber 15 is provided.

  The outer tub 3 is suspended from the outer box 10 so as to be swingable by a spring body 11, and the vibration at the time of dehydration is reduced by the vibration damper 12 so that the vibration at the time of steady dehydration is not transmitted to the outer box 10. A weight 13 is provided for vibration-proofing and reducing vibration during dehydration. Further, one end of a drainage hose 16 is connected to the bottom of the outer tub 3, and the other end of the hose 16 is connected to a drainage pump 17 to drain the washing water in the outer tub 3. Near the lower portion of the heater 14, a temperature detection device 18 and an overtemperature prevention device 19 are fixed to the bottom of the outer tub body 3a.

  The substantially cylindrical packing member 20 is made of a flexible material such as rubber and connects the opening of the outer tub 3 corresponding to the front opening of the rotating drum 1 and the front opening of the body. The tank side end is fixed to the outer tank front plate 3b. A lid 21 is provided at the opening on the front of the body so as to be freely opened and closed. The water supply valve 22 supplies water into the outer tub 3. The control device 23 controls operations of the first motor 6, the second motor 7, the heater 14, the drain pump 17, the water supply valve 22, and the like, and sequentially controls a series of processes such as washing, rinsing, and dehydration (for example, , See Patent Document 1).

  To explain the operation in the above configuration, the lid 21 is opened, the laundry is put into the rotary drum 1, the power switch (not shown) is turned on, and then the start switch (not shown) provided in the control device 23 is turned on. When the operation is started by operating, the water supply valve 22 operates to supply water, and when a predetermined water level is detected by a water level detection means (not shown), the water supply is stopped and the first motor 6 is driven. In the washing process, since the laundry contains water, the revolving drum 1 is driven to rotate at the first rotation speed N1 by the first motor 6 while replenishing water, and the laundry in the rotating drum 1 is lifted to the surface of the water. Fall down.

  In this type of drum-type washing machine, a function of increasing the temperature of the washing water is generally added in order to enhance the washing effect of the clothes or to kill bacteria attached to the clothes.

  For this purpose, the heater 14 is energized, the temperature is detected by the temperature detector 18, and the washing water in the outer tub 3 is heated while being controlled to a substantially constant temperature. However, safety measures are also required while the temperature rises. If a failure occurs in the control device 23 and the heater 14 is energized even though there is no water in the outer tub 3, the temperature in the outer tub 3 rises abnormally. The energization to the heater 14 is cut off by the prevention device 19 and does not lead to equipment damage or fire due to overheating.

  When the washing process ends, the drain pump 17 operates to drain the washing water in the outer tub 3. In the rinsing process, the same operation as in the washing process is performed.

In the dehydration process, the rotary drum 1 is rotationally driven by the second motor 7 at the second rotational speed N2, and the laundry is centrifugally dehydrated. At this time, when the laundry in the rotating drum 1 is shifted, that is, when an imbalance occurs, the swinging bodies such as the rotating drum 1 and the outer tub 3 vibrate, but when the dehydration is started, the vibration isolating damper 12 vibrates the swinging body. At the time of steady dehydration, the vibration is not transmitted to the outer box 10 by the vibration isolation mechanism of the vibration isolation damper 12.
Japanese Patent Laid-Open No. 10-263285

However, in such a conventional configuration, when the washing water is heated to a high temperature (for example, 80 ° C. or higher), the temperature of the rotating drum is similarly high, and the door body can be opened during or after the washing process. In such a case, there is a risk that the user may get burned by touching the internal rotating drum. Alternatively, in order to prevent the risk of burns, if the door body is controlled not to be opened until the end of the washing, rinsing and dehydration processes, there has been a complaint that the door cannot be opened halfway after starting operation. Furthermore, when a large amount of high-temperature water is drained as it is after the washing process, there are problems such as the need to increase the heat resistance of the drainage path on the main body side and the drainage being performed under conditions that the user does not touch.

  The present invention solves the above-described conventional problems, and performs a cooling operation in which water supply and drainage are repeated until the heated wash water is lowered to a predetermined temperature in the drainage process after the high-temperature washing process is completed. The purpose is to provide a drum-type washing machine that improves the safety of the drainage path, and that the user can safely open the door at any time after high-temperature washing, can alleviate anxiety, and has improved convenience It is said.

In order to solve the above-mentioned conventional problems, in the drum type washing machine of the present invention, a bottomed cylindrical rotating drum having a first opening in the front and a rotating shaft in a horizontal direction or an inclined direction, A bottomed cylindrical water receiving tub having a second opening corresponding to the first opening and enclosing the rotating drum in a freely rotatable manner; A washing machine main body having a third opening corresponding to the first opening and the second opening, and opening and closing the third opening for loading and unloading the laundry into and from the rotating drum provided in the washing machine main body A door, a motor for rotating the rotating drum, a heating means for heating the washing water in the water receiving tub, a temperature detecting means for detecting the temperature of the washing water in the water receiving tub, and the water receiving A first water supply means for supplying water to the tank, and a first opening of the rotating drum; A second water supply means for supplying water to the rotating the drum Ri, a water level detecting means for detecting the level of the washing water in the water tray vessel, provided in the middle of the drainage pathway communicating with the bottom of the water tub the A series of washing is performed by inputting data from the drainage means for controlling the drainage of the wash water in the water receiving tank, the temperature detection means and the water level detection means, and controlling the motor, heating means, water supply means, drainage means, etc. And a control means for controlling the rinsing and dehydrating operations, the control means having a high temperature washing process for controlling the heating means to heat the washing water to a first predetermined temperature or more to perform washing, in drainage stroke after completion of the high temperature washing cycle, it performs the water supply part or all by at least the second feed means, until said heated wash water becomes a second predetermined temperature, the respective water supply means and the water discharge Control It is obtained so as to perform a cooling operation of repeating a water supply and drainage by.

  As a result, in the drainage process after the completion of the high temperature washing process, the drainage temperature can be lowered by performing the cooling operation of repeating the water supply and drainage until the heated washing water is lowered to a predetermined temperature. The safety of the route can be improved, and the user can safely open the door at any time after high-temperature washing, so that anxiety can be eliminated and convenience can be improved.

The washing machine of the present invention supplies water directly to the inner surface of the door body by supplying water directly into the rotating drum after the high temperature washing process, and the temperature of the laundry , the washing water and the door body in the rotating drum is increased. It can be quickly lowered, the user can open the lid more safely, and the time required for the cooling process can be shortened, so the safety of the drainage path can be improved and the convenience can be improved. .

According to a first aspect of the present invention, there is provided a bottomed cylindrical rotating drum having a first opening at the front and a rotating shaft in a horizontal direction or an inclination direction, and a second opening corresponding to the first opening. A bottomed cylindrical water receiving tank that rotatably includes the rotating drum, and a third opening corresponding to the first opening and the second opening that supports the water receiving tank in a swingable manner. A washing machine main body having an opening; a door provided in the washing machine main body for opening and closing a third opening for taking in and out the laundry; and a motor for rotationally driving the rotary drum; Heating means for heating the washing water in the water receiving tank, temperature detecting means for detecting the temperature of the washing water in the water receiving tank, and first water supply means for supplying water in communication with the water receiving tank, A second water supply means for supplying water into the rotary drum from the first opening of the rotary drum; A water level detecting means for detecting the level of the washing water in the water tray tank, a water discharge means for controlling the draining of the washing water in the water tray tank provided in the middle of the drainage pathway communicating with the bottom of the water tub Control means for controlling a series of washing, rinsing and dehydrating operations by inputting data from the temperature detecting means and the water level detecting means and controlling the motor, heating means, water supply means and drainage means, etc. The control means includes a high-temperature washing process for controlling the heating means to heat the washing water to a temperature equal to or higher than the first predetermined temperature for washing, and at least in the second discharging process after the high-temperature washing process is completed . It performs the water supply part or all the water supply means, until said heated wash water becomes a second predetermined temperature, wherein to perform the cooling operation of repeating a water supply and drainage by controlling the respective water supply means and the water discharge means In the drainage process after the completion of the high-temperature washing process, the cooling operation that repeats water supply and drainage is executed until the heated washing water is lowered to a predetermined temperature, thereby lowering the temperature of the drainage. It is possible to improve the safety of the drainage route, and the user can safely open the lid at any time after high-temperature washing, so that anxiety can be eliminated and convenience can be improved.

Furthermore, by supplying water directly into the rotating drum, water is sprayed on the inner peripheral surface of the door body, and the temperature of the laundry, washing water and door body in the rotating drum can be lowered quickly, and the user can The lid can be opened safely and the time required for the cooling process can be shortened.

  According to a second invention, in the first invention, the water level at the time of the high-temperature washing process is set to be a first predetermined water level lower than the water level of the normal washing process in which the heating means is not operated. Since more water can be supplied before draining after the stroke, the cooling effect is enhanced and the initial drainage temperature can be lowered, so that the safety of the drainage path can be improved and the temperature of the washing water can be quickly increased. Since it can be lowered, the time required for the cooling process can be shortened.

  According to a third invention, in the first or second invention, the water receiving tank has an overflow port that overflows into the drainage passage when the water level of the washing water in the water receiving tank becomes equal to or higher than the second predetermined water level. The control means is set such that the maximum water level during the cooling operation is set to a third predetermined water level lower than the second predetermined water level which is the overflow water level, and the temperature from the overflow water level to the drainage path is high. By preventing the water from being drained directly, the safety of the drainage path can be further improved.

  According to a fourth invention, in the third invention, when the cooling operation is performed, the motor is controlled for the first predetermined time at the third predetermined water level to rotate the rotary drum, thereby rotating the laundry in the rotary drum and the laundry. The water is set to be agitated, and when the amount of water supply in the water receiving tank is high, the temperature of the laundry and the washing water in the rotating drum and the temperature variation around the temperature detection device are reduced. Since the temperature can be reduced, the temperature can be lowered uniformly and quickly throughout, and the user can safely open the lid after high-temperature washing.

  According to a fifth invention, in the fourth invention, when the cooling operation is executed, the motor is controlled to rotate for a first predetermined time at a third predetermined water level to rotate the rotary drum, and the temperature is within the first predetermined time. The temperature of the washing water is detected by the detection means, and the temperature can be detected in a state where there is less unevenness in the temperature of the laundry and the washing water in the rotating drum and the temperature around the temperature detection device. It is possible to reduce the false detection, and the user can safely open the lid after high temperature washing.

In a sixth aspect based on the fifth aspect, when the cooling operation is performed, the motor is controlled for the first predetermined time at the third predetermined water level to rotate the rotary drum and detect the temperature of the washing water by the temperature detecting means. If the temperature detected by the temperature detecting means is higher than the second predetermined temperature, that is, the temperature at which safety is ensured, the third predetermined again after draining to the fourth predetermined water level in the vicinity of the first predetermined water level. Water is supplied to a predetermined water level. If the entire drainage is performed during the cooling operation before the temperature falls below the second predetermined temperature, the temperature cannot be detected accurately because there is no hot water around the temperature detection device. Therefore, the user can operate the lid in a safer state by adopting a configuration in which the lid cannot be opened when the temperature is high.

According to a seventh invention, in the invention according to the fifth or sixth invention, when the cooling operation is executed, the motor is controlled for the first predetermined time at the third predetermined water level to rotate the rotary drum, and the temperature detection means performs washing. When the temperature of the water is detected and the temperature detected by the temperature detecting means is equal to or lower than the second predetermined temperature, that is, safety can be ensured, after all the washing water in the water receiving tub is drained, the process proceeds to the next step. The temperature detection device can be operated until the temperature of the laundry in the rotating drum, the washing water and the lid is always lowered to a safe temperature, and the user can open the lid in a safer state. I can .

Following, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum type washing machine according to the first embodiment of the present invention, and FIG. 2 is a control circuit diagram in which the drum type washing machine is partially blocked.

  As shown in FIG. 1, the rotating drum 24 is formed in a bottomed cylindrical shape, and a large number of water passage holes 25 are provided on the entire outer periphery thereof, and are rotatably disposed in the water receiving tank 26. A rotation axis (rotation center axis) 27 is provided at the rotation center of the rotary drum 24 in a substantially inclined direction, and the axial center direction of the rotation drum 24 is inclined downward from the front side toward the back side. A motor 28 attached to the rear surface of the water receiving tank 26 is connected to the rotary shaft 27, and the rotary drum 24 is rotated in the forward and reverse directions. Several protruding plates 29 are provided on the inner wall surface of the rotating drum 24 to facilitate the stirring of the clothes.

  The opening provided in the upward inclined surface on the front side of the water receiving tub 26 is covered with a lid 30 so that it can be opened and closed. By opening the lid 30, the laundry can be taken in and out of the rotary drum 24 through the clothing entrance 31. ing. Since the lid 30 is provided on the upward inclined surface, the laundry can be taken out without bending the waist. Note that the lid 30 has a configuration capable of operating the lid lock 40 so as not to open in order to maintain the safety of the user during the driving operation.

  The water receiving tub 26 is suspended and supported by a spring 33 and a damper 34 from the washing machine body 32 so as to be swingable, and a drainage path 35a having one end connected to a drainage port 35 below the water receiving tub 26 has the other end. The washing water in the water receiving tank 26 is drained by connecting to a drain valve (drainage means) 36. The water supply valve (water supply means) 37 supplies water into the water receiving tank 26 through the detergent charging case 37a and the water supply path 38a. The water supply valve 37 also communicates with a second water supply means 38b capable of supplying water from above the rotating drum 24 via the second water supply path 38c.

  The water level detection means 39 detects the water level in the water receiving tank 26. In addition, a heater (heating means) 41 including a sheathed heater for heating the washing water and a temperature detection means 42 for detecting the temperature of the washing water are provided at the lower inner bottom of the water receiving tub 26, and the laundry in the rotary drum 24 is provided. It has a function of washing with warm water to enhance the washing effect.

An overflow port 49 is provided on the side wall of the water receiving tank 26, and is configured to overflow (overflow) when the amount of water exceeds the water level of the overflow port 49. One end of an overflow path (overflow path) 49 a is connected to the overflow port 49, and the other end of the overflow path (overflow path) 49 a is connected to a drainage path 35 b on the downstream side of the drain valve 36.

  In the present embodiment, the rotation shaft 27 is provided in a substantially inclined direction at the rotation center of the rotary drum 24, and the axial center direction of the rotary drum 24 is inclined downward from the front side toward the back side. However, the rotary shaft 27 may be provided in the substantially horizontal direction at the rotation center of the rotary drum 24, and the axial center direction of the rotary drum 24 may be provided in the substantially horizontal direction.

  The control device 43 has a circuit configuration as shown in FIG. 2, and controls the operation of the motor 28, the drain valve 36, the water supply valve 37, the heater 41, etc., and sequentially controls a series of steps of washing, rinsing and dehydration. Control means 44 comprising a microcomputer is provided. The control unit 44 inputs information from the input setting unit 45 for setting the driving course and the like, displays the information on the display unit 46 based on the information, notifies the user, and starts the operation by the input setting unit 45. Is set, the data from the water level detection means 39 for detecting the water level in the water receiving tank 26 is input, and the operations of the drain valve 36, the water supply valve 37, the heater 41, etc. are performed via the load driving means 47. Control and perform washing operation.

  FIG. 3 is an enlarged front view of input setting means and display means of the drum type washing machine in the first embodiment.

  As shown in FIG. 3, the input setting means 45 includes a washing time setting switch 45a for setting the washing time, a rinsing frequency setting switch 45b for setting the rinsing frequency, a dehydration time setting switch 45c for setting the dehydration time, and start / pause. A switch 45e, a power-on switch 45f, a power-off switch 45g, a water level change input setting switch 45h, and a water temperature change input switch 45i are provided.

  As shown in FIG. 3, the display means 46 is a course setting display section for displaying a course set by a washing time display section 46a, a rinse count display section 46b, a dehydration time display section 46c, and a second course setting switch 45d. 46d, a water level display unit (water level display means) 46e, a water temperature display unit 46f, a remaining time display unit 46g, a lid lock display unit 46h, and the like.

  FIG. 4 is a main part operation flowchart of the drum type washing machine in the first embodiment.

  The operation will be described with reference to FIG. 4. When the user opens the lid 30, puts the laundry into the rotating drum 24 and closes the lid 30 again, the operation starts in Step 100. After turning on the switch 45f, the course is set in step 102 by operating the course setting switch 45d. Further, in step 103, it is determined whether or not the setting of the water level, the water temperature, the washing time, the number of times of rinsing, and the dehydration time are changed. If there are changes, the washing time setting switch 45a, the number of times of rinsing setting switch 45b, the setting of the dehydration time are determined. The switch 45c, the water level change input setting switch 45h, and the water temperature change input switch 45i are operated to change each setting. In step 104, the display of the change contents is confirmed on the display means 46. When there is no change, when the operation is started by operating the start switch 45e provided in the control device 43 in Step 105, the lid lock 40 is closed by the control means 44 in Step 106. In step 107, the water supply valve 37 is operated to supply water. In step 108, it is determined whether or not the water level detecting means 39 supplies water to a predetermined water level.

When it is determined that the water has been supplied to a predetermined water level, the process proceeds to a washing process in Step 109, and the motor 28 is driven to start the stirring rotation of the rotary drum 24. If it is not the predetermined water level, the process returns to step 107. In the washing process, the water level is lowered because the laundry absorbs moisture, so the rotating drum 24 is driven to rotate at a rotational speed N by the motor 28 while supplying the shortage. The laundry in the rotating drum 24 is lifted by the protruding plate 29 and falls onto the water surface or other clothing or the inner bottom of the rotating drum 24.

  In step 110, it is confirmed whether or not the necessary water temperature has been set by the heating means. If the heating means has been set to the required water temperature, the control device 43 passes the control means 44 and the load driving means 47 in step 111. Then, the heater 41 is controlled to heat the washing water. If the heating means is not set to the required water temperature in step 110, the process proceeds to step 114. In step 112, the temperature detection device 42 determines whether or not the temperature T of the washing water is heated to a first predetermined temperature T1 (for example, 90 ° C.) or higher. End control.

  In step 114, it is determined whether or not a predetermined washing time has elapsed. If the predetermined washing time has elapsed, the washing process is terminated in step 115, and the driving of the motor 28 is stopped by the control means 44 to agitate the rotary drum 24. Stop rotation.

  In step 116, the temperature detection device 42 determines whether or not the temperature T of the washing water is higher than a second predetermined temperature T2 (for example, 55 ° C.). It shifts to the cooling operation of 117-120. If the temperature is equal to or lower than T2, the process proceeds to step 121. In the cooling operation, the water supply valve 37 is operated to supply water at step 117, the drain valve 36 is operated to drain water at step 118, and the water supply valve 37 is operated to supply water at step 119. In step 120, it is determined whether the temperature T of the washing water is equal to or lower than a predetermined temperature T2. When it is T2 or less, the process proceeds to step 121, where the control means 44 operates the drain valve 36 to drain all the washing water in the water receiving tank 26. If it is higher than T2, the process returns to step 118, and the drainage of step 118 and the water supply of step 119 are repeated again.

  In step 122, the control means 44 releases the lid lock 40 so that the lid 30 can be opened, and at the same time displays the release on the lid lock display section 46h. Next, at step 123, the process proceeds to the next process.

  In addition, when the user selects to stop the operation and open the lid according to the user's intention during the washing process, when the washing water is detected to be equal to or higher than a second predetermined temperature T2 (for example, 55 ° C.), the cooling operation is performed. Then, after determining that the washing water temperature is equal to or lower than the second predetermined temperature, the lid lock 40 is released after draining.

  As described above, in the drainage process after the completion of the high-temperature washing process, the draining temperature can be lowered by performing the cooling operation of repeating the water supply and drainage until the heated washing water is lowered to a predetermined temperature. In addition, the safety of the drainage route can be improved, and the user can safely open the lid at any time after high-temperature washing, so that anxiety can be eliminated and convenience can be improved.

(Embodiment 2)
FIG. 5 is a cooling operation process diagram of the drum type washing machine according to the second embodiment of the present invention. A longitudinal sectional view and a block control circuit diagram of the second embodiment will be described with reference to FIGS. 1 and 2 which are the same as those of the first embodiment.

  As shown in FIG. 5, the control means 44 sets the water level S1 in the high temperature washing process to be lower than the water level S2 in the normal washing process in which the heating means is not operated. Other configurations are the same as those of the first embodiment.

The operation in the above configuration will be described. When the user selects the water temperature to a high temperature (for example, 90 ° C.) with the water temperature change input switch 45i, the water level is a normal washing process that does not automatically operate heating means such as tap water. A predetermined water level S1 (for example, 60 mm) lower than the water level S2 (for example, 85 mm) is set. For this reason, the amount of washing water that becomes hot is lower at the water level S1 than at the water level S2. In addition, after performing the high-temperature washing process in the same manner as in the first embodiment, when the process proceeds to the next drainage process, water is supplied to a predetermined upper limit water level S3 (for example, 130 mm) set lower than the overflow water level at the beginning. More water is supplied at the water level S1 than at the water level S2. After the water supply, the temperature of the drained water is calculated as shown in Equation 1. Using this equation, the temperature of the drained water in the case of the water level S2 and in the case of the water level 1 is calculated as shown in Equation 2, and the lower predetermined water level S1, that is, the high-temperature washing process is higher than the higher water level S2, that is, heating The temperature during drainage will be lower than in the case of the normal washing process.

  As described above, by supplying more water before draining after the high temperature washing process, the initial drainage temperature can be further lowered, so that the safety of the drainage path can be improved and the temperature of the washing water can be quickly increased. Since it can be lowered, the time required for the cooling process can be shortened.

  Hereinafter, Embodiment 3, Embodiment 4, Embodiment 5, Embodiment 6, Embodiment 7, and Embodiment 8 will be described with reference to FIGS. 1, 2, and 5 similar to Embodiment 2.

(Embodiment 3)
As shown in FIGS. 1, 2, and 5, the water receiving tank 26 has an overflow port 49 that overflows the washing water into the drainage path when the water level of the washing water in the water receiving tank 26 becomes equal to or higher than the predetermined water level S4. And the control means 44 is configured such that the highest water level when the cooling operation is performed becomes a third predetermined water level S3 lower than the predetermined water level S4 that overflows. Other configurations are the same as those in the first and second embodiments.

  The operation in the above configuration will be described. When the cooling operation is performed, first, the water supply valve 37 is operated, and the third predetermined water level S3 (for example, 130 mm) lower than the predetermined water level S4 (for example, 200 mm) set to the height of the overflow port. Supply water until Thereafter, drainage is performed by operating the drain valve 36. Next, water is supplied again to a predetermined water level S3. In this way, water supply and drainage are repeated until the temperature of the washing water in the rotary drum 24 becomes equal to or lower than the second predetermined temperature T2 (for example, 55 ° C.).

  As described above, the maximum water level S3 at the time of water supply is set to be lower than the height water level S4 (for example, 200 mm) of the overflow port 49, thereby preventing high-temperature water from being discharged directly from the overflow port into the drainage path. It is possible to improve the safety of the drainage path.

(Embodiment 4)
As shown in FIGS. 1, 2, and 5, the control unit 44 controls the motor 28 to rotate the rotary drum 24 at the third predetermined water level S <b> 3 for the first predetermined time T <b> 1. Yes. Other configurations are the same as those in the first to third embodiments.

  To explain the operation in the above configuration, when the cooling operation is performed, first, the water supply valve 37 as the water supply means is operated to supply water to the third predetermined water level S3 (for example, 130 mm), and for the first predetermined time (for example, 1 minute). ), The motor 28 is driven by the control means 44, and the rotary drum 24 is rotated in the forward or reverse direction to agitate the laundry and the washing water in the rotary drum 24. Thereafter, the drain valve 36 is operated to drain to the S5 water level (for example, 40 mm). Next, water is supplied again to the predetermined water level S3 and stirred. By the operation as described above, water supply, agitation, and drainage are repeatedly performed until the temperature of the washing water in the rotary drum 24 becomes equal to or lower than a second predetermined temperature T2 (for example, 55 ° C.).

  As described above, by stirring for a predetermined time when the amount of water supply is large, it is possible to reduce the temperature unevenness between the temperature of the laundry and the washing water in the rotating drum and the temperature around the temperature detection device. The temperature can be lowered uniformly and quickly, and the user can safely open the lid after high temperature washing.

(Embodiment 5)
As shown in FIGS. 1, 2, and 5, the control means 44 controls the motor 28 to rotate the rotary drum 24 for the first predetermined time T1 at the third predetermined water level S3, and temperature detection means. The temperature of washing water is detected by 42. Other configurations are the same as those of the first to fourth embodiments.

  The operation in the above configuration will be described. When the cooling operation is executed, first, the water supply valve 15 is operated to supply water to the third predetermined water level S3 (for example, 130 mm), and control is performed for the first predetermined time (for example, 1 minute). The motor 28 is driven by the means 44 to rotate the rotary drum 24 in the forward or reverse direction to agitate the laundry and the washing water in the rotary drum 24, and the temperature within the first predetermined time T1. The temperature of the washing water is detected by the detection means 42. Thereafter, the drain valve 36 is operated to drain to the S5 water level (for example, 40 mm). Next, water is supplied again to the predetermined water level S3, stirring is performed, and the temperature of the washing water is detected. Thus, water supply, agitation, temperature detection, and drainage are repeatedly performed until the temperature of the washing water in the rotating drum 24 becomes equal to or lower than the second predetermined temperature T2 (for example, 55 ° C.).

  As described above, by detecting the temperature while stirring for a predetermined time when the amount of water supply is large, the temperature of the laundry and the washing water in the rotating drum is less uneven and the temperature around the temperature detection device is less uneven. Thus, the temperature can be detected, false detection is reduced, and the user can safely open the lid after high temperature washing.

(Embodiment 6)
As shown in FIGS. 1, 2, and 5, the control means 44 controls the motor 28 to rotate the rotary drum 24 for the first predetermined time T1 at the third predetermined water level S3, and temperature detection means. When the temperature of the washing water detected by the above is higher than the second predetermined temperature T2, the water is drained to a fourth predetermined water level S5 (for example, a water level of 40 mm) in the vicinity of the first predetermined water level and then supplied to the third predetermined water level again. It is what you do. Other configurations are the same as those of the first to fifth embodiments.

The operation in the above configuration will be described. When the cooling operation is executed, first, the water supply valve 37 is operated to supply water to the third predetermined water level S3 (for example, 130 mm), and control is performed for the first predetermined time (for example, 1 minute). The motor 28 is driven by the means 44 to rotate the rotary drum 24 in the forward or reverse direction to agitate the laundry and the washing water in the rotary drum 24, and the temperature within the first predetermined time T1. The temperature of the washing water is detected by the detection means 42. At that time, if the detected temperature is higher than the second predetermined temperature T2 (for example, 55 ° C.), the fifth predetermined water level S5 (for example, 40 mm) in the vicinity of the first predetermined water level S1 (for example, 60 mm) in the next draining process. Drain until the washing water is not drained completely. Next, water is supplied again to the predetermined water level S3, stirring is performed, and the temperature of the washing water is detected. Thus, water supply, agitation, temperature detection, and drainage are repeatedly performed until the temperature of the washing water in the rotating drum 24 becomes equal to or lower than the second predetermined temperature T2 (for example, 55 ° C.).

  As described above, if the control is performed so that the washing water is not completely drained during the cooling operation until the temperature becomes equal to or lower than the second predetermined temperature, there is no hot water around the temperature detection device as in the case of the total drainage, so that the temperature is increased. It is possible to prevent a malfunction that can not be accurately detected and can be opened even when the temperature of the lid is high, and the user can open the lid in a safer state.

(Embodiment 7)
As shown in FIGS. 1, 2, and 5, the control means 44 controls the motor 28 to rotate the rotary drum 24 for the first predetermined time T1 at the third predetermined water level S3, and temperature detection means. When the temperature of the washing water detected by 42 is equal to or lower than the second predetermined temperature T2, all the washing water in the water receiving tub is drained and then the next process is performed. Other configurations are the same as those of the first to sixth embodiments.

  The operation in the above configuration will be described. When the cooling operation is executed, first, the water supply valve 37 is operated to supply water to the third predetermined water level S3 (for example, 130 mm), and control is performed for the first predetermined time (for example, 1 minute). The motor 28 is driven by the means 44 to rotate the rotary drum 24 in the forward or reverse direction to agitate the laundry and the washing water in the rotary drum 24, and the temperature within the first predetermined time T1. The temperature of the washing water is detected by the detection means 42. At that time, when the detected temperature is equal to or lower than a second predetermined temperature T2 (for example, 55 ° C.), the washing water in the water receiving tub 26 is all drained, and then the process proceeds to the next step.

  As described above, until the temperature falls below the second predetermined temperature, the temperature of the laundry, the washing water, and the lid in the rotating drum is surely lowered to a safe temperature by controlling not to drain all the water during the cooling operation. The temperature detection device can be operated until the user can open the lid in a safer state.

(Embodiment 8)
As shown in FIGS. 1, 2, and 5, the water supply means 38 includes a first water supply means 38 a that supplies water to the water receiving tank 26 and a first opening of the rotary drum 1, and the inside of the rotary drum 24. The second water supply means 38b for supplying water at least partially or entirely after the completion of the high-temperature washing process is performed by the second water supply means 38b. Other configurations are the same as those in the first to seventh embodiments.

  The operation in the above configuration will be described. When water is supplied during the cooling operation, the second water supply means 38b configured above the rotating drum 24 and the water receiving tub 26 is operated immediately after the completion of the high temperature washing process. The entire amount of water is supplied to a third predetermined water level S3 (for example, 130 mm). The supplied water is poured directly around the laundry and the lid in the rotary drum 24 to lower the water temperature and the like.

  As described above, by directly supplying water into the rotating drum 1, the temperature of the laundry, the washing water and the lid in the rotating drum 24 can be lowered quickly, and the user can open the lid more safely. The time required for the cooling process can be shortened.

As described above, the drum type washing machine according to the present invention performs the cooling operation of repeating the water supply and the drainage until the heated washing water is lowered to the predetermined temperature in the drainage process after the high temperature washing process is completed. Because it can lower the temperature of the wash water to drain, improve the safety of the drainage route, and the user can safely open the lid at any time after high temperature washing, so that the sense of anxiety can be dispelled, It can also be used in drum-type washing machines with a drying function.

The longitudinal cross-sectional view of the drum type washing machine in Embodiment 1 of this invention Block control circuit diagram of the drum type washing machine Enlarged front view of input setting means and display means of the drum type washing machine Main part operation flowchart of the drum type washing machine Cooling operation process diagram of the drum type washing machine Vertical section of a conventional drum-type washing machine

24 Rotating drum 26 Water receiving tank 27 Rotating shaft (Rotating center shaft)
28 Motor 30 Lid (door)
32 Washing machine body 36 Drain valve (drainage means)
37 Water supply valve (water supply means)
39 Water level detection means 41 Heater (heating means)
42 Temperature detection means

Claims (7)

A bottomed cylindrical rotating drum having a first opening in the front and a rotating shaft in a horizontal direction or an inclination direction, and a second opening corresponding to the first opening, and the rotating drum A bottomed cylindrical water receiving tub that is rotatably included, and a washing machine that has a third opening corresponding to the first opening and the second opening that supports the water receiving tub in a swingable manner. A main body, a door body that is provided in the washing machine main body and opens and closes a third opening for putting laundry in and out of the rotary drum, a motor that rotationally drives the rotary drum, and a water receiving tub Heating means for heating the washing water, temperature detection means for detecting the temperature of the washing water in the water receiving tank, first water supply means for supplying water in communication with the water receiving tank, and the first of the rotating drum a second water supply means for supplying water to the rotating the drum from the opening of the water tub A water level detecting means for detecting the water level of the washing water, a drain means for controlling the drainage of the washing water in the water receiving tank provided in the middle of a drainage path communicating with the bottom of the water receiving tank, and the temperature detecting means And control means for controlling the motor, heating means, water supply means, drainage means and the like to input a series of washing, rinsing and dehydrating operations. A high temperature washing process for controlling the heating means to heat the washing water to a temperature equal to or higher than the first predetermined temperature and performing washing, and at least part of the drainage process after the high temperature washing process is performed by the second water supply means or performs the water supply of the total amount, de said heated washing water until the second predetermined temperature, and the like to perform a cooling operation of repeating a water supply and drainage by controlling the respective water supply means and the water discharge means Beam type washing machine. 2. The drum type washing machine according to claim 1, wherein the control means is set so that the water level during the high temperature washing process is a first predetermined water level lower than a water level of a normal washing process in which the heating means is not operated. The water receiving tank has an overflow port that overflows into the drainage passage when the water level of the washing water in the water receiving tank becomes equal to or higher than the second predetermined water level, and the control means has a maximum water level when the cooling operation is performed. 3. The drum type washing machine according to claim 1, wherein the drum type washing machine is set to be a third predetermined water level lower than a predetermined water level of 2. The control means controls the motor for a first predetermined time at a third predetermined water level when the cooling operation is performed to rotate the rotary drum so as to agitate the laundry and the wash water in the rotary drum. Item 4. The drum type washing machine according to Item 3. The control means controls the motor for a first predetermined time at a third predetermined water level during the cooling operation to drive the rotary drum to rotate and detect the temperature of the washing water by the temperature detecting means. Drum-type washing machine. When the cooling operation is executed, the control means controls the motor for a first predetermined time at a third predetermined water level to rotationally drive the rotating drum, detects the temperature of the washing water by the temperature detecting means, and detects the temperature by the temperature detecting means. When the temperature is higher than the second predetermined temperature, after draining to the fifth predetermined water level in the vicinity of the first predetermined water level, water is supplied again to the third predetermined water level so as not to drain the total amount of water. The drum type washing machine according to claim 5. When the cooling operation is executed, the control means controls the motor for a first predetermined time at a third predetermined water level to rotationally drive the rotating drum, detects the temperature of the washing water by the temperature detecting means, and detects the temperature by the temperature detecting means. The drum type washing machine according to claim 5 or 6, wherein when the temperature is equal to or lower than the second predetermined temperature, all the washing water in the water receiving tub is drained, and then the process proceeds to the next step.