JP2024031174A - clothing processing equipment - Google Patents

Abstract

The present disclosure provides a clothing processing device that can prevent clothing in a storage tank from being damaged by contact with hot water and also prevent a user from getting burned when hot water is drained. [Solution] The clothing processing device of the present disclosure includes a tub provided to be able to store washing water, a storage tank included in the tub and containing objects to be processed, and a water supply unit that supplies water to the tub. and a drainage section that drains water from the tub, a heating section that heats the water in the tub to generate hot water, and a control section that controls the water supply section, the drainage section, and the heating section. , the control unit is configured to simultaneously or alternately perform a water supply operation by the water supply unit and a drainage operation by the drainage unit at a water level lower than a lower end of the storage tank when draining the hot water. Execute the drain operation. [Selection diagram] Figure 4

Description

The present disclosure relates to garment processing devices.

Patent Document 1 discloses a drum-type washing machine that performs washing using hot water.

The drum-type washing machine in Patent Document 1 includes a rotating drum formed in a cylindrical shape with a bottom, a water tank rotatably housing the rotating drum, a water supply means for supplying water into the water tank, and a drainage means for discharging water from the water tank. It includes a hot water heater disposed at the bottom of the water tank that heats the washing water, and a control means that controls the water supply means, drainage means, hot water heater, etc. to control each process such as washing, rinsing, and dehydration.

JP2015-83247A

The present disclosure provides a clothing processing device that can prevent clothing in a storage tank from being damaged by contact with hot water and also prevent a user from getting burned when hot water is drained.

The clothing processing device of the present disclosure includes a tub that is capable of storing washing water, a storage tank that is contained in the tub and that accommodates objects to be processed, a water supply unit that supplies water to the tub, and a water supply unit that supplies water from the tub. The control unit includes a drainage unit that drains water, a heating unit that heats water in the tub to generate hot water, and a control unit that controls the water supply unit, the drainage unit, and the heating unit. At a water level lower than the lower end of the storage tank, a cooling drainage operation is performed in which a water supply operation by the water supply section and a drainage operation by the drainage section are performed simultaneously or alternately.

The clothing processing device of the present disclosure provides a clothing processing device that can prevent clothing in a storage tank from being damaged by contact with hot water and also prevent a user from getting burned when hot water is drained.

A schematic vertical cross-sectional view of a washer/dryer in Embodiment 1 Schematic front sectional view of the washer/dryer in Embodiment 1 Flowchart of steam supply operation of washer/dryer in Embodiment 1 Timing chart during cooling and draining operation of the washer/dryer in Embodiment 1 Timing chart during cooling and draining operation of washer/dryer in Embodiment 2

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanations of well-known matters or redundant explanations of substantially the same configurations may be omitted. This is to avoid making the following description unnecessarily redundant and to facilitate understanding by those skilled in the art.

The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter recited in the claims.

[1. Embodiment 1]
Embodiment 1 will be described below using FIGS. 1 to 4.

[1-1. composition]
[1-1-1. Overall configuration of washer/dryer]
(Washing dryer 100)
As shown in FIG. 1, the washer/dryer 100 includes a housing 110, a tank unit 200, a water supply unit 300 (shown in FIG. 2), a drainage unit 400, and a drying unit 500.

(Housing 110)
The housing 110 includes a housing front wall 111, a housing rear wall 112, housing left and right side walls 113 (shown in FIG. 2), a housing top wall 114, and a housing bottom wall 115.

The housing front wall 111 is provided on the front side of the housing 110. The housing rear wall 112 is provided on the back side of the housing 110. The housing left and right side walls 113 (FIG. 2) are provided on the left and right sides of the housing 110 so as to connect the housing front wall 111 and the housing rear wall 112. The housing top wall 114 is provided extending substantially horizontally at the upper part of the housing 110 so as to connect the housing front wall 111, the housing rear wall 112, and the housing left and right side walls 113. . The casing bottom wall 115 is provided extending substantially horizontally at the bottom of the casing 110 so as to connect the casing front wall 111, the casing rear wall 112, and the casing left and right side walls 113.

The front wall 111 of the housing is provided with an input port 119 for inputting the processed material into a drum 220 (described later) of the tank unit 200, and a door body 120 that covers the input port 119 in an openable/closable manner. . The door body 120 rotates between a closed position in which the input port 119 is closed and an open position in which the input port 119 is opened.

An operation display section 130 is provided at the top of the front wall 111 of the housing. The user inputs information such as the driving course for the washer/dryer 100 to operate through the operation display unit 130 .

(tank unit 200)
As shown in FIG. 1, the tank unit 200 is provided within the housing 110. The tank unit 200 includes a tub 210 that can store water, a drum 220 that can store the object to be treated, a rotation drive section 230, and a water level detection unit 250.

The tab 210 and the drum 220 are formed into a substantially cylindrical shape with a bottom centered on the central axis X (FIG. 1). The central axis X is provided so as to be inclined downward from the front side of the washer/dryer 100 toward the back side. Note that the central axis X may be provided so as to extend in the horizontal direction.

The tab 210 is provided within the housing 110 so as to be elastically supported. The tub 210 includes a steam generator 215 that heats washing water to generate steam. The steam generating section 215 is provided at the bottom of the tub 210 and includes a water storage section 216 and a hot water heater 217. The water storage portion 216 is formed one step lower in the tab 210 and is provided so as to be able to store water. The hot water heater 217 generates heat when energized and heats the water stored in the water storage section 216 .

It is desirable that the steam generating section 215 be provided at a position lower than the lower end of the drum 220. As a result, while suppressing the water in the water storage section 216 from flooding the objects to be treated in the drum 220, the steam generated in the steam generation section 215 generates an upward air current, so steam is efficiently supplied into the drum 220. can.

The steam generating section 215 is provided with a water temperature sensor 218 that detects the temperature of water stored in the water storage section 216. In this embodiment, water temperature sensor 218 is provided near the base of hot water heater 217.

The drum 220 is enclosed in the tab 210 and is rotatably provided around the central axis X. A drum opening 221 that communicates with the input port 119 is provided at the front of the drum 220, and a user inputs a workpiece into the drum 220 through the input port 119 and the drum opening 221. Here, the objects to be processed include, for example, clothing, hats, shoes, toys, and the like.

The drum 220 includes a drum bottom wall 222 that faces the drum opening 221 and a drum peripheral wall 223 that forms the peripheral surface of the drum 220. The drum bottom wall 222 is provided with a rotating shaft 224 that is connected to a pulley 232, which will be described later. The rotating shaft 224 extends along the central axis X from the drum bottom wall 222 toward the housing rear wall 112. A rotating shaft 224 passes through the bottom wall of the tab 210 and appears between the tab 210 and the rear housing wall 112. A plurality of water holes 225 are formed in the drum peripheral wall 223 to allow water to flow between the tab 210 and the drum 220. A baffle 226 is provided on the inner wall of the drum peripheral wall 223 to lift up the object to be processed in the drum 220 and cause it to fall downward when the drum 220 rotates.

The rotation drive unit 230 includes a motor 231 (FIG. 2) provided below the tab 210, a pulley 232, and a belt 233. Pulley 232 is connected to rotating shaft 224. Belt 233 transmits the power of motor 231 to pulley 232 . Motor 231 rotates drum 220 through belt 233, pulley 232, and rotating shaft 224.

The water level detection unit 250 is provided outside the tub 210. Water level detection unit 250 includes an air trap 251, an air pipe 252, and a water level sensor 253. The air trap 251 communicates with the inside of the tub 210, and is provided so as to branch off from the vicinity of a connecting portion with the tub 210 of a drainage path 410, which will be described later. The air trap 251 may be provided on the bottom rear side wall of the tub 210. The air pipe 252 has one end connected to the air trap 251 and the other end connected to the water level sensor 253.

The water level sensor 253 is constituted by a MEMS type pressure sensor, and detects the water level in the tub 210 by detecting the pressure in the air trap 251.

(Water supply unit 300)
As shown in FIG. 2, the water supply unit 300 includes a water supply port 301, a water supply pipe 302, a water supply valve 303, and a detergent storage section 310. The water supply port 301 introduces water into the housing 110 from the outside through a water supply hose (not shown). The water supply pipe 302 connects the water supply port 301 and the tank unit 200. In this embodiment, water supply pipe 302 is connected to the side of tab 210. The water supply valve 303 is provided so that the water supply pipe 302 can be opened and closed. When the water supply valve 303 is opened, water that has flowed into the housing 110 from the water supply port 301 flows through the water supply pipe 302 and flows into the tub 210 . The detergent storage section 310 is provided in the middle of the water supply pipe 302 and stores detergent.

(Drain unit 400)
As shown in FIG. 1, the drainage unit 400 includes a drainage path 410 and a circulation path 420.

Drainage path 410 is a path through which water discharged from tub 210 passes. A drainage hose (not shown) provided outside the housing 110 is connected to the downstream end of the drainage path 410.

The drainage path 410 is provided with a drainage filter 415 and a drainage valve 416 from the upstream side. Drainage filter 415 is provided in the middle of drainage path 410, and captures foreign matter such as lint contained in water flowing through drainage path 410.

The drain filter 415 is provided so as to be detachable from the drain path 410 through the front wall 111 of the housing. The user can remove the drain filter 415 from the drain path 410 by rotating the drain filter 415 by a first angle A1 (for example, 240 degrees) from the attached state. Note that a drainage filter attachment/detachment sensor 415a for detecting attachment/detachment of the drainage filter 415 is provided in the housing 110. The drain filter attachment/detachment sensor 415a detects that the user is about to remove the drain filter 415 when the drain filter is rotated by a second angle A2 (for example, 25 degrees) smaller than the first angle A1 from the attached state. Detect.

The drain valve 416 is provided to be able to open and close the drain path 410. When the drain valve 416 is opened, water in the tub 210 is drained out of the housing 110 through the drain path 410.

Furthermore, the drainage unit 400 has an overflow pipe 417. The overflow pipe 417 is provided as a countermeasure against overflow in the tub 210 , and has an upstream end connected to the tub 210 and a downstream end connected to the downstream side of the drain valve 416 of the drain path 410 . ing.

A water-sealed trap 418 is provided downstream of the connection with the overflow pipe 417 in the drainage path 410 to prevent backflow of abnormal odors and the like from outside the casing 110.

The circulation path 420 is a path that branches from between the drain filter 415 and the drain valve 416 of the drain path 410 and returns water into the tub 210 . The circulation path 420 is provided with a circulation pump 425 . When the circulation pump 425 is activated, water in the tub 210 passes through the drainage path 410 and the circulation path 420 and returns into the tub 210. Note that the downstream end of the circulation path 420 may be connected to the upper part of the tab 210.

(Drying unit 500)
The drying unit 500 is provided at the inner upper part of the housing 110. Drying unit 500 includes a drying duct 510, an intake pipe 520, and an air supply pipe 530. The intake pipe 520 is connected to the tub 210 through an intake port 521, and is a path through which air flows from the tub 210 into the drying duct 510. The air supply pipe 530 is connected to the tub 210 through an air supply port 531, and is a path through which air flows out from the drying duct 510 to the tub 210.

The drying duct 510 is provided with a drying filter 511, a heat exchange section 512, and a blowing fan 513. The drying filter 511 removes foreign matter such as lint and lint contained in the air flowing into the drying duct 510. The heat exchange unit 512 is configured by a heat pump, and exchanges heat with the air that has passed through the dry filter 511. A blowing fan 513 is provided in the drying duct 510 as a blowing means. When the blower fan 513 rotates, a negative pressure environment is generated in the intake pipe 520 and a positive pressure environment is generated in the air supply pipe 530. Thereby, a circulating air path is formed in which air flows through the tub 210, the intake pipe 520, the drying duct 510, the air supply pipe 530, and the tub 210 in this order. Note that the intake port 521 is desirably provided above the tab 210 where the steam generated in the steam generation section 215 tends to accumulate. Further, the air supply port 531 is desirably provided at the rear of the drum bottom wall 222 in order to efficiently apply steam to the object to be processed.

The drying unit 500 is provided with a first drying temperature sensor 541 that detects the temperature of air flowing in from the intake port 521, and a second drying temperature sensor 542 that detects the temperature of the air heated by the heat exchanger 512. ing.

(control unit)
A control section (not shown) is provided within the housing 110. The control unit controls the hot water heater 217, the motor 231, the water supply valve 303, the drain valve 416, the heat exchange unit 512, the blower fan 513, etc., and executes the driving course instructed by the user through the operation display unit 130. In addition, during execution of the above-described driving course, the control unit also controls the temperature of the water in the tub 210 detected by the water temperature sensor 218, the pressure in the tub 210 detected by the water level sensor 253, the first drying temperature sensor 541 and the second drying temperature sensor 541. The temperature inside the drying unit 500 detected by the drying temperature sensor 542 and information regarding the attachment/detachment of the drain filter detected by the drain filter attachment/detachment sensor 415a are acquired. Further, the control unit can perform cloth amount sensing that detects the weight of the object to be processed stored in the drum 220 from the value of the current flowing through the motor 231 when the drum 220 is rotated.

In this embodiment, the courses that the washer/dryer 100 can execute include a washing course, a drying course, a washing/drying course that is executed consistently from washing to drying, a refresh course that processes the object with steam, and a drum 220 This includes a tub cleaning course in which the tub 210 is cleaned without introducing any objects to be processed. The control unit executes a steam supply operation in which the steam generation unit 215 generates steam during a part of the above-described course. In the steam supply operation, steam is applied to the object to be treated to remove wrinkles, sterilize and deodorize clothing, and remove or deactivate allergens.

[1-2. motion]
The operation and effect of the washer/dryer 100 configured as above will be described below.

[1-2-1. Steam supply operation]
The steam supply operation of the washer/dryer 100 will be explained using FIG. 3. The steam supply operation includes a water supply process in which water is supplied to the tub 210, a steam process in which steam is generated in the steam generating section 215 and applied to the object to be treated, and a process in which the drying unit 500 is controlled to control the inside of the tub 210 and the object to be treated. A drying step of drying the object is performed in order. The time in each step of the steam supply operation may be determined based on the amount of the material to be treated in the drum 220, the water temperature in the tub 210, and the like.

In the present embodiment, as shown in FIG. 2, the water level corresponding to the lower end of the drum 220 is set as a first water level W1, which is lower than the lower end of the drum 220, and the water level at which water is stored in the water storage section 216 is set as a first water level W1. The second water level W2 and the water level at which the hot water heater 217 may be exposed will be defined as a third water level W3. The second water level W2 is set to be about 1 cm lower than the first water level W1 corresponding to the lower end of the drum 220, for example. The third water level W3 is set, for example, to a water level approximately 1 cm above the top surface of the hot water heater 217.

When the steam supply operation starts, the water supply process starts. In the water supply process, the control unit first performs initial drainage (S101). In the initial draining in S101, if water is present in the tub 210, the control unit opens the drain valve 416 to drain the water in the tub 210. When the drainage is completed, the control unit closes the drain valve 416, opens the water supply valve 303, and performs a water supply operation to supply water from the outside into the tub 210 (S103). In the water supply step of the steam supply operation, the maximum water level of the water supplied into the tub 210 is set to a second water level W2 lower than the bottom surface of the drum 220 so as not to directly wet the object to be treated in the drum 220. ing. When the water level W in the tab 210 reaches the second water level W2 (YES in S105), the control unit closes the water supply valve 303 and ends the water supply process. In this embodiment, when the water level W in the tub 210 reaches the second water level W2, it means that the pressure p in the tub 210 detected by the water level sensor 253 is the water pressure in the tub 210 corresponding to the second water level W2. pw2 or more.

When the water supply process ends, the steam process starts. When the steam process starts, the control unit energizes and drives the hot water heater 217 (S107) to heat the water in the water storage unit 216 and generate hot water. By driving the hot water heater 217 after the water supply process, it is possible to suppress the occurrence of a dry heating state in which the hot water heater 217 is driven while being exposed from the water. Although not shown, in the steam process, the control unit determines whether the water temperature T in the tab 210 detected by the water temperature sensor 218 is an upper limit temperature control temperature Tmax (e.g., 80°C) and a lower limit temperature control temperature Tmin (e.g., 60°C). The driving and stopping of the hot water heater 217 is controlled so as to exist between the two. The control unit stops the hot water heater 217 when the water temperature T in the tub 210 reaches the upper limit temperature control temperature Tmax, and then drives the hot water heater 217 when the water temperature T in the tub 210 reaches the lower limit temperature control temperature Tmin. let The hot water stored in the water storage section 216 is subcooled and boiled near the hot water heater 217 to generate steam. Note that steam may be generated from the hot water in the water storage section 216 by normal boiling.

When a certain period of time (for example, 2 minutes) has elapsed since the hot water heater 217 was driven in S107, the control unit drives the blower fan 513 (S109). By driving the blower fan 513 in the steam process, the steam generated in the steam generator 215 is not only filled in the tub 210 by rising air, but also passed through the drying unit 500 and blown from the rear of the drum 220. The air is blown by a fan 513. Thereby, the steam generated in the steam generating section 215 can be efficiently applied to the object to be processed.

In the present embodiment, the control unit constantly drives the blower fan 513 in the steam process, but may control the fan 513 to be driven intermittently. Further, in the present embodiment, the control unit drives the blower fan 513 after a certain period of time has elapsed after driving the hot water heater, but the hot water heater 217 and the blower fan 513 may be driven at the same time. .

Although not shown, in the steam process, the control unit operates the motor 231 continuously or intermittently to rotate the drum 220. The rotational speed of the drum 220 is set, for example, to about 50 to 60 r/min at which the processed material accommodated in the drum 220 tumbles. When the drum 220 is rotating at about 50 to 60 r/min, the object to be processed in the drum 220 is lifted up into the drum 220 by the baffle 226 and dropped from above. In the present embodiment, the air supply port 531 is provided at the rear of the drum bottom wall 222, so that when the workpiece in the drum 220 falls from above, it passes in front of the air supply port 531. and steam is sprayed on it. Thereby, the object to be treated can efficiently obtain the effect of steam. Further, when the object to be processed is clothing, the clothing is spread by the wind blown when it falls from above, so that wrinkles in the clothing can be efficiently smoothed out.

When the process time ts after the start of the steam process becomes equal to or longer than the steam process set time ts1 (for example, 20 minutes) (if YES in S111), the control unit stops driving the hot water heater 217 and the blower fan 513. (S113), and the steam process ends.

Once the steam process is finished, the drying process begins. In the drying process, the control unit drives the heat exchange unit 512 and the blower fan 513 (S115) to dry the object to be processed in the drum 220 and the inner wall surface of the tub 210. The process time of the drying process is set to, for example, 10 minutes.

At the end of the drying process, the control unit opens the drain valve 416 and performs a drain operation (S117). By performing the drain operation at the end of the drying process, the water in the tub 210, whose water temperature T rose to about 80°C during the steam process, can be cooled and then drained. Can prevent burns.

When the draining operation in S117 is completed, the control unit stops the heat exchange unit 512 and the blower fan 513 (S119), and the drying process ends. When the drying process ends, the steam supply operation ends.

Note that in this embodiment, the drive of the blower fan 513 is stopped at the end of the steam step in S113, and the blower fan 513 is driven at the start of the drying step in S115. The blower fan 513 may be controlled to continue to be driven without being stopped until the process begins.

[1-2-2. Cooling drainage operation]
(Issues during hot water drainage)
In the steam process, water stored in the water storage section 216 is heated to a high temperature (approximately 60° C. to 80° C.) by the hot water heater 217 to generate steam. In the steam process, the objects to be processed in the drum 220 are not brought into direct contact with hot water, so the objects to be processed are processed using hot water at a higher temperature than in a hot water washing course in which the objects are washed using hot water. Therefore, if the high-temperature hot water generated in the steam process is discharged outside the housing 110 and the user comes into contact with the hot water, there is a risk of burns.

(Cooling drainage operation during initial drainage)
In the initial drainage in S101, if high-temperature hot water is stored in the tub 210, the control unit executes a cooling drainage operation. The case where high-temperature hot water is stored in the tub 210 at the time of initial drainage refers to the case where an operation that generated high-temperature hot water in the tub 210 (for example, a steam supply operation) was performed during the previous operation. This may be the case when the power is cut off and drainage is not completed normally.

In the initial drainage in S101, if the water level W in the tub 210 is equal to or higher than the third water level W3 and the water temperature T in the tub 210 is equal to or higher than the first temperature T1 (for example, 50° C.), the control unit executes the cooling drainage operation. do. In this embodiment, the case where the water level W in the tub 210 is equal to or higher than the third water level W3 means that the pressure p in the tub 210 detected by the water level sensor 253 is equal to or higher than the water level W in the tub 210 corresponding to the third water level W3. This is the case when the water pressure is equal to or higher than pw3. Note that the first temperature T1 is not limited to 50°C, and may be set to a temperature higher than the user's body temperature (for example, 40°C or 45°C). Note that if initial drainage is performed immediately after the drying operation was performed last time, there is a risk that the water temperature sensor 218 may detect a high temperature even though there is almost no water in the tub 210. In this embodiment, the conditions for performing the cooling and draining operation are that the water level W in the tub 210 is equal to or higher than the third water level W3 and the water temperature T in the tub 210 is equal to or higher than the first temperature T1. This suppresses false detection by the water temperature sensor 218.

As shown in FIG. 4, in the cooling and draining operation, the control unit opens the water supply valve 303 to supply water from the outside into the tub 210, and opens the drain valve 416 to discharge the water in the tub 210. Execute drainage operation and at the same time. As a result, the temperature of the water discharged from the tub 210 can be lowered, so even if the user comes into contact with the drainage water, it is possible to prevent burns from occurring.
When a predetermined period of time (for example, 9 seconds) has elapsed since the cooling and draining operation was performed, the control unit closes the water supply valve 303 and only performs the draining operation. When the water in the tub 210 runs out, the controller closes the drain valve 416 and ends the cooling drain operation. In this embodiment, the amount of water stored in the tub 210 in the hot water washing course is about 15 to 20 L, whereas the amount of water stored in the tub 210 in the steam process is about 2 L. Therefore, in the steam process, even if the water temperature T in the tub 210 is high, the cooling and draining operation that supplies water to the water supply valve 303 is executed, which is shorter than the hot water washing course. Hot water can be cooled down in hours.

In the present embodiment, the control unit controls the cooling and draining operation to be performed for a predetermined period of time, but it is controlled to perform the cooling and draining operation until the water temperature T in the tub 210 falls below the first temperature T1. You can also do this.

Note that, as shown in FIG. 4, the water level W in the tub 210 during the cooling and draining operation is lower than the water level W1 corresponding to the lower end of the drum 220. Thereby, even if high-temperature hot water remains in the tub 210, it is possible to prevent the workpiece in the drum 220 from being damaged by direct contact with the hot water.

Note that if the water level W in the tub 210 is less than the third water level W3, or if the water temperature T in the tub 210 is less than the first temperature, the control unit does not perform the cooling drainage operation and Only the valve 416 is driven to perform normal drainage operation. Thereby, when there is no need to perform the cooling and draining operation, the water supply operation is not performed, so that the amount of water used can be reduced. Note that when the water level W in the tub 210 is less than the third water level W3, there is almost no water in the tub 210, so control may be performed such that the draining operation is not performed.

(Cooling drainage operation upon detection of drainage filter opening)
The drainage filter 415 is installed by being inserted into the drainage path 410, and when the drainage filter 415 is removed from the drainage path 410, the drainage path 410 and the outside of the casing 110 communicate with each other. Therefore, when the user removes the drain filter 415 while high-temperature hot water is stored in the tub 210, the high-temperature hot water in the tub 210 leaks out of the housing 110 from the location where the drain filter 415 is removed. There is a risk of burns to the user.

Therefore, during the steam supply operation, when the drain filter attachment/detachment sensor 415a detects that the drain filter 415 is removed, the control unit determines that the water level W in the tub 210 is equal to or higher than the third water level W3 and the water temperature T in the tub 210 is higher than the third water level W3. If the temperature is higher than the first temperature (for example, 50° C.), a cooling and draining operation is performed. The control for the cooling and draining operation here is the same as the control for the cooling and draining operation described above, so a description thereof will be omitted. Thereby, the temperature of the hot water stored in the tub 210 can be lowered. On the other hand, when the drain filter attachment/detachment sensor 415a detects that the drain filter 415 has been removed, the water level W in the tub 210 is less than the third water level W3, or the water temperature T in the tub 210 is less than the first temperature. In this case, the control unit does not perform the cooling drainage operation, but drives only the drainage valve 416 to perform a normal drainage operation.

Note that in this embodiment, the drain filter attachment/detachment sensor 415a detects the drain filter at the second angle A2, which is a smaller angle than the first angle A1 that requires rotation in order to remove the drain filter 415 from the housing 110. Removal of the filter 415 is detected. In this embodiment, the control unit opens the water supply valve 303 and the drain valve 416 when the user rotates the drain filter 415 by a second angle A2, which is an angle smaller than the first angle A1. As a result, when the user rotates the drain filter 415 by the first angle A1, the hot water in the tub 210 can be cooled by the water introduced from the water supply valve 303, so the user rotates the drain filter 415 by the second angle A2. It can lower the temperature of water that may leak during removal.

Note that when the drain filter attachment/detachment sensor 415a detects that the drain filter 415 has been removed, the control unit performs a cooling drain operation or a normal drain operation to drain all the water in the tub 210, and then drains the water. When the filter attachment/detachment sensor 415a detects attachment of the drain filter 415, the control unit restarts from the water supply process (S103 in FIG. 3) and executes the steam process until the steam process set time ts1 ends. Note that the time for the steam process in this case is the time obtained by subtracting the time from the start of operation until the removal of the drainage filter 415 is detected from the steam process set time ts1.

In this embodiment, when performing the cooling and draining operation, the control unit opens the water supply valve 303 for a predetermined period of time (for example, 9 seconds) and then closes the water supply valve 303. Thereby, when the drainage filter 415 is removed by the user, the amount of water leaking from the location where the drainage filter 415 is removed can be suppressed. Therefore, even when the drain filter 415 is removed, it is possible to prevent the floor on which the washer/dryer 100 is installed from being flooded with water that leaks from the location where the drain filter 415 is removed.

In addition, the maximum water level in the steam process is set to a second water level W2 that is lower than the bottom surface of the drum 220, and the amount of water used is lower than in the hot water washing course in which the objects to be processed stored in the drum 220 are immersed in water. Less is. Therefore, even when the water supply operation is performed during the cooling and draining operation, the amount of water leaking from the location where the drain filter 415 is removed can be suppressed to a small level. Therefore, even when the drain filter 415 is removed during the steam process, it is possible to prevent the floor on which the washer/dryer 100 is installed from being flooded with water leaking from the location where the drain filter 415 was removed.

[1-3. effect]
As described above, in the present embodiment, the washer/dryer 100 includes a tub 210 that is provided to be able to store washing water, a drum 220 that is enclosed in the tub 210 and accommodates the object to be processed, and A water supply valve 303 that supplies water, a drain valve 416 that drains water from the tub 210, a hot water heater 217 that heats the water in the tub 210 to generate hot water, the water supply valve 303, the drain valve 416, and the hot water heater. 217, a control unit (not shown). When draining the hot water in the tub 210, the control unit simultaneously executes a water supply operation that drives the water supply valve 303 and a drain operation that drives the drain valve 416 at a water level lower than the lower end of the drum 220. Perform cooling drain operation.

As a result, hot water can be discharged while being added to the hot water at a water level lower than the lower end of the drum 220, so hot water can be discharged from the tub 210 while lowering the temperature. Therefore, it is possible to prevent the object to be processed in the drum 220 from being damaged by contact with the hot water, and to prevent the user from getting burned if the user comes into contact with the drained warm water.

As in this embodiment, the washer/dryer 100 is provided with a drain filter 415 that is removably installed in a drain path 410 through which water discharged from the tub 210 passes, and that captures foreign matter. When it is detected that 415 has been removed, a cooling drain operation may be performed.

Thereby, when the drainage filter 415 is removed, the temperature of the hot water leaking from the location where the drainage filter 415 was provided can be lowered.

As in the present embodiment, the drain filter 415 can be removed from the drain path 410 by being rotated by a first angle A1, and the control unit may rotate the drain filter 415 by a second angle A2 which is smaller than the first angle A1. Then, a cooling drain operation may be performed.

Thereby, by adding water to the hot water in the tub 210 before the drain filter 415 is removed, the temperature of the hot water that leaks out when the drain filter 415 is removed can be lowered in advance.

As in this embodiment, if hot water remains in the tub 210 at the start of operation, the control unit may execute the cooling and draining operation.

Thereby, when the high-temperature hot water generated in the tub 210 during the previous operation was not discharged normally, it can be discharged while adding water to the hot water, so that the hot water can be discharged from the tub 210 while lowering the temperature.

As in this embodiment, the washer/dryer 100 includes a water level sensor 253 that detects the water level in the tub 210 and a water temperature sensor 218 that detects the water temperature in the tub 210. When the detected water level W is higher than the height at which the water temperature sensor 218 is located, the cooling and draining operation may be performed.

Thereby, when the water level in the tub 210 is lower than the temperature detection unit, it is possible to suppress the temperature detection unit from erroneously detecting the temperature of the air.

[2. Embodiment 2]
[2-1. motion]
In the second embodiment, the washer/dryer 100 differs from the first embodiment in some controls in the cooling and draining operation. Since the other configurations and controls are the same, their explanations will be omitted.

[2-1-1. Water supply amount control during cooling drainage operation]
In the washer/dryer 100 according to the present embodiment, as shown in FIG. 5, after the cooling and draining operation starts, the water level W in the tub 210 detected by the water level sensor 253 reaches a predetermined water level (for example, the second water level W2). In this case, the water supply valve 303 is closed to stop the water supply from the water supply valve 303 into the tub 210 . Note that the control unit may control the water supply valve 303 and the like to reduce the flow rate of water supply into the tub 210. This can prevent the water level W in the tub 210 from reaching the water level corresponding to the lower end of the drum 220 during the cooling and draining operation and directly wetting the object to be treated inside the drum 220.

[2-2. effect]
As in the present embodiment, the washer/dryer 100 includes a water level sensor 253 that detects the water level W in the tub 210, and when the water level W detected by the water level sensor 253 reaches the second water level W2, the control unit The flow rate of water supplied from the water supply valve 303 to the tub 210 may be reduced, or the water supply from the water supply valve 303 to the tub 210 may be stopped.

This can prevent the water level in the tub 210 from reaching the lowest end of the drum 220 while the tub 210 is filled with hot water. Therefore, it is possible to prevent the object to be processed in the drum 220 from being damaged by contact with the hot water.

(Other embodiments)
As mentioned above, Embodiments 1 and 2 have been described as examples of the technology disclosed in this application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments in which changes, replacements, additions, omissions, etc. are made. Furthermore, it is also possible to create a new embodiment by combining the components described in the first and second embodiments.

Therefore, other embodiments will be illustrated below.

In Embodiments 1 and 2, the washer/dryer 100, which is a drum type washer/dryer, was described as an example of a clothing processing apparatus. The clothes processing device may be any device that generates hot water within the tub. Therefore, the clothes processing device is not limited to the washer/dryer 100 which is a drum type washer/dryer, but may be a drum type washing machine, a vertical type washing machine, a vertical type washer/dryer, or a two-tank type washing machine.

In Embodiments 1 and 2, the water level sensor 253 constituted by a MEMS pressure sensor was described as an example of the water level detection section. The water level detection unit may be anything that can detect the water level within the tub. Therefore, the water level detection section is not limited to the water level sensor 253. The water level detection unit may be configured with an electrode detection device that detects the water level by reading potential changes between electrodes, or a float sensor. Since the electrode detection and float sensor sensitively reflect the drop in water level, it is possible to effectively suppress the occurrence of dry heating in the tub.

In Embodiments 1 and 2, the water supply unit 300 including the water supply pipe 302 and the water supply valve 303 has been described as an example of the water supply unit. The water supply unit is not limited to the water supply unit 300 as long as it has a configuration that supplies water into the tub from a water supply valve. The water supply pipe may be formed along the rear surface of the tub and placed at the upper rear side of the tub. Further, the water supply path may be configured such that water supplied from the water supply path to the tub does not hit the object to be treated in the drum. Alternatively, the water supply valve may be opened intermittently by the control unit to reduce the amount of water supplied to the tub, thereby controlling the supplied washing water to flow down along the inner surface of the tub. In addition, the water supply pipe includes a first water supply flow path configured to allow washing water to hit the objects to be processed stored in the drum, and a first water supply channel configured to prevent washing water from hitting the objects to be processed contained in the drum. The first water supply route and the second water supply route may be selectively used depending on the purpose.

In Embodiments 1 and 2, as an example of the cooling drainage operation, a cooling drainage operation in which a water supply operation for driving the water supply valve 303 and a drainage operation for driving the drain valve 416 are simultaneously performed has been described. The control in the cooling and draining operation does not have to be such that the water supply operation and the draining operation are performed simultaneously. For example, the water supply operation and the drainage operation may be performed alternately. Executing the water supply operation and the drain operation alternately means that the water supply valve and the drain valve are not opened at the same time, but after the water supply operation that drives the water supply valve is completed, the water supply valve is closed and the drain operation is executed that drives the drain valve. The drain valve is closed after the drain operation is completed, and so on. Note that this step may include a state in which the water supply valve and the drain valve are opened at the same time.

In the first and second embodiments, the water temperature sensor 218 provided near the base of the hot water heater 217 has been described as an example of the temperature detection section. The temperature detection unit is not limited to the water temperature sensor 218 as long as it can detect the water temperature in the tub. The temperature detection section may be provided on the inner wall surface of the tub, or may be provided on the outer wall surface of the tub. When the tub is provided with a water storage section that stores water at a lower water level than the drum, the temperature detection section may be provided on the inner wall surface of the water storage section or the outer wall surface of the water storage section.

(Additional note 1)
The clothing processing device according to the first aspect includes: a tub configured to store washing water; a storage tank included in the tab and containing objects to be processed; a water supply unit that supplies water to the tub; It includes a drainage section that drains water, a heating section that heats the water in the tub to generate hot water, and a control section that controls the water supply section, the drainage section, and the heating section, and the control section drains the hot water. Sometimes, at a water level lower than that of the storage tank, a cooling drainage operation is performed in which a water supply operation by the water supply section and a drainage operation by the drainage section are performed simultaneously or alternately.

The clothing processing device according to the second embodiment is the clothing processing device according to the first embodiment, and includes a drainage filter that is detachably installed in the drainage path through which water discharged from the tub passes and captures foreign matter, and a control unit , when it is detected that the drainage filter has been removed, the cooling drainage operation is executed.

As the clothing processing device according to the third aspect, in the clothing processing device according to the second aspect, the drainage filter becomes removable from the drainage path by being rotated at the first angle, and the control unit is configured to control the drainage filter from the first angle. When it is also rotated by a small second angle, it performs a cooling and draining operation.

As the clothing processing device according to the fourth aspect, in the clothing processing device according to any one of the first to third aspects, if hot water remains in the tub at the start of operation, the control unit executes a cooling and draining operation. .

As the clothing processing device according to the fifth aspect, in the clothing processing device according to any one of the first to fourth aspects, a water level detection section that detects the water level in the tub, a temperature detection section that detects the water temperature in the tub, The control unit executes the cooling drainage operation when the water level in the tub is higher than the height at which the temperature detection unit is located.

The clothing processing device according to a sixth aspect is the clothing processing device according to any one of the first to fifth aspects, further comprising a water level detection unit that detects the water level in the tub, and a control unit configured to control the water level detected by the water level detection unit. When the water exceeds a predetermined water level, the flow rate of water supplied from the water supply section to the tub is reduced, or the water supply from the water supply section to the tub is stopped.

The present disclosure is applicable to garment processing devices. Specifically, it is applicable to drum-type washer-dryers, drum-type washing machines, vertical washer-dryers, vertical washing machines, and two-tub washing machines.

100 Washing/drying machine (clothing processing equipment)
110 Housing 111 Front wall of the housing 112 Rear wall of the housing 113 Left and right side walls of the housing 114 Top wall of the housing 115 Bottom wall of the housing 119 Inlet 120 Door body 130 Operation display section 200 Tank unit 210 Tab 215 Steam generating section 216 Water storage section 217 Hot water heater (heating part)
218 Water temperature sensor (temperature detection section)
220 drum (storage tank)
221 Drum opening 222 Drum bottom wall 223 Drum peripheral wall 224 Rotating shaft 225 Water hole 226 Baffle 230 Rotating drive part 231 Motor 232 Pulley 233 Belt 250 Water level detection unit 251 Air trap 252 Air pipe 253 Water level sensor (water level detection part)
300 Water supply unit 301 Water supply port 302 Water supply pipe 303 Water supply valve (water supply part)
310 Detergent storage section 400 Drainage unit 410 Drainage path 415 Drainage filter 415a Drainage filter attachment/detachment sensor 416 Drainage valve (drainage section)
417 Overflow pipe 418 Trap 420 Circulation route 425 Circulation pump 500 Drying unit 510 Drying duct 511 Drying filter 512 Heat exchange section 513 Blow fan 520 Intake pipe 521 Intake port 530 Air supply pipe 531 Air supply port 541 First drying temperature sensor 542 Second drying temperature sensor

Claims (6)

A tab that can store washing water,
a storage tank that is included in the tub and accommodates the object to be processed;
a water supply unit that supplies water to the tub;
a drainage section that drains water from the tub;
a heating unit that heats the water in the tub to generate hot water;
a control unit that controls the water supply unit, the drainage unit, and the heating unit;
Equipped with
The control unit is configured to simultaneously or alternately perform a water supply operation by the water supply unit and a drainage operation by the drainage unit at a water level lower than a lower end of the storage tank when draining the hot water. perform an action,
Garment processing equipment. A drainage filter is provided removably in a drainage path through which water discharged from the tub passes, and captures foreign matter;
The control unit executes the cooling drainage operation when detecting that the drainage filter is removed.
The clothing processing device according to claim 1. The drainage filter becomes removable from the drainage path by being rotated through a first angle;
The control unit executes the cooling drainage operation when the drainage filter is rotated by a second angle smaller than the first angle.
The clothing processing device according to claim 2. The control unit executes the cooling and draining operation if hot water remains in the tub at the start of operation.
The clothing processing device according to claim 1. a water level detection unit that detects the water level in the tab;
a temperature detection unit that detects the water temperature in the tub;
Equipped with
The control unit executes the cooling drainage operation when the water level detected by the water level detection unit is higher than the height at which the temperature detection unit is located.
The clothing processing device according to any one of claims 1 to 4. comprising a water level detection unit that detects the water level in the tub,
The control unit reduces the water supply flow rate from the water supply unit to the tub, or stops the water supply from the water supply unit to the tub, when the water level detected by the water level detection unit reaches a predetermined water level.
The clothing processing device according to claim 1.