JP2022175778A - Washing and drying machine - Google Patents

Abstract

To prevent drying efficiency of a drying step from dropping significantly due to the decrease in a flow rate of air supplied into an outer tub.SOLUTION: A washing and drying machine includes: an outer tub for housing a substantially cylindrical drum rotatably; an exhaust air duct which is formed on an upper peripheral surface wall of the outer tub, and through which air flowing out of an opening passes; a fan 67 for generating an airflow which passes through the exhaust air duct; a movable member which moves according to a flow rate of the air passing through the exhaust air duct; and control means for controlling a rotational frequency of the fan 67 based on a position of the movable member 80.SELECTED DRAWING: Figure 4

Description

The present invention relates to a washer/dryer.

As a conventional washing and drying machine, an outer tub, a substantially cylindrical drum rotatably arranged in the outer tub, an intake duct arranged in the upper right part of the peripheral wall of the outer tub, and the peripheral wall of the outer tub. Some have exhaust ducts arranged in the upper left corner (see, for example, Patent Document 1). The exhaust duct includes a first exhaust duct that communicates with the inside of the outer tank through an opening formed in the peripheral wall of the outer tank; and a second exhaust duct communicating with. A fan and a filter are arranged inside the second exhaust duct.

When the drying process is performed, the air for drying the laundry is supplied from the intake duct into the outer tub by driving the fan, and the air in the outer tub is discharged from the exhaust duct. The filter captures dirt, dust and lint (lint, fluff, etc.) contained in the air that flows into the exhaust duct.

JP 2007-282732 A

In a conventional washing/drying machine, when the drying process is performed, it is common to drive the fan at a predetermined number of revolutions to keep the flow rate of air supplied to the outer tub substantially constant. However, if the filter catches dust or the like that has flowed into the exhaust duct during the drying process and clogs the filter, the resistance of the filter increases. Then, even though the fan is driven at a predetermined number of revolutions, the flow rate of the air supplied into the outer tub is reduced, and the drying efficiency in the drying process is remarkably lowered.

It should be noted that this is not limited to the case where the filter is clogged with dust and the like, and the flow rate of air supplied to the outer tank is reduced. A problem occurs in which the efficiency drops significantly.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to prevent a drastic decrease in the drying efficiency of the drying process due to a decrease in the flow rate of the air supplied into the outer tub during the drying process.

A washing and drying machine according to the present invention includes an outer tub that rotatably accommodates a substantially cylindrical drum, an exhaust duct through which air flowing out from an opening formed in an upper peripheral wall of the outer tub passes, and the exhaust duct. a fan that generates an airflow passing through the exhaust duct; a moving member that moves according to the flow rate of the air passing through the exhaust duct; and control means that controls the rotation speed of the fan based on the position of the moving member. It is characterized by having

In the washing/drying machine according to the present invention, the exhaust duct has a first exhaust duct that communicates with the inside of the outer tub through the opening, and a second exhaust duct that is arranged above the first exhaust duct. The second exhaust duct communicates with the inside of the first exhaust duct via a communication hole formed in the lower surface thereof, and the moving member can take a closed position for closing the communication hole. It is preferable to provide a lid member and a support member that supports the lid member so that the lid member opens the communication hole to change the distance from the closed position.

In the washing/drying machine according to the present invention, it is preferable that a filter is provided in the exhaust duct and through which air flowing through the exhaust duct passes, and the moving member moves according to a clogging state of the filter. be.

The washing/drying machine according to the present invention preferably includes notification means for notifying that the filter is clogged, and the control means preferably controls the notification means based on the position of the moving member.

In the washing/drying machine according to the present invention, it is preferable that the filter is arranged so that at least a portion of the filter overlaps the communication hole in a plan view.

According to the present invention, even if the flow rate of air supplied into the outer tub decreases for some reason during the drying process, the rotation speed of the fan is controlled based on the position of the moving member that moves according to the flow rate of air. Therefore, it is possible to prevent the drying efficiency of the drying process from significantly deteriorating due to a decrease in the flow rate of air supplied into the outer tub.

According to the present invention, when the fan is stopped, the cover member closes the communication hole formed in the lower surface of the second exhaust duct, so that the air can enter the exhaust duct through the communication hole during the washing process and the rinsing process. It is possible to prevent the water from adhering to the filter.

According to the present invention, since the moving member moves according to the clogging state of the filter in the exhaust duct, even if the flow rate of air supplied to the outer tank is reduced due to the clogging of the filter, the air can still be supplied to the outer tank. Therefore, it is possible to prevent the drying efficiency of the drying process from significantly decreasing due to the decrease in the air flow rate.

According to the present invention, when the filter is clogged, the notifying means can notify the occurrence of the filter clogging.

According to the present invention, the area of the filter can be increased compared to the case where the filter and the communication hole are arranged so as not to overlap each other in plan view. Therefore, it is possible to suppress a decrease in the amount of air passing through the exhaust duct due to clogging of the filter.

It is the schematic sectional drawing which looked at the cross section when the washing-drying machine 1 which concerns on embodiment of this invention is cut|disconnected by the vertical plane along the front-back direction from the left side. It is the perspective view which looked at the washing-drying machine 1 from the diagonal upper front right. It is the perspective view which looked at the washer-dryer 1 from the front diagonally upper left. 4(a) is an enlarged cross-sectional view of the second air intake duct 63 taken along a vertical plane, and FIG. 4(b) is a cross-sectional view taken along line a ₂ -a ₂ of FIG. 4(a). be. 6 is an enlarged cross-sectional view around a communication hole 64 formed in the lower surface of a second air intake duct 63. FIG. 3 is a control block diagram of the washing and drying machine 1; FIG. 6 is a flowchart for explaining a method of controlling the number of rotations of the fan 67 in the drying process;

Hereinafter, the washing/drying machine 1 of the embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic cross-sectional view of a washing/drying machine 1 according to an embodiment of the present invention, taken along a vertical plane extending in the front-rear direction and viewed from the left side. 1 is a cross-sectional view taken along line a ₁ -a ₁ of FIG. FIG. 2 is a perspective view of the washer/dryer 1 as seen obliquely from the front right and above. FIG. 3 is a perspective view of the washer/dryer 1 as viewed obliquely from the upper front left. In FIG. 3, illustration of a part of the structure of the washing/drying machine 1 is omitted.

The washer/dryer 1 of the present embodiment, as shown in FIG. 1, is a commercial washer/dryer used in a laundromat or the like.

As shown in FIG. 1 , the washer/dryer 1 has an outer shell formed by a slightly vertically elongated housing 2 , and an outer tub 3 is provided substantially in the center of the housing 2 . The outer tank 3 stores water supplied from an external water supply facility or the like, and is formed in a substantially horizontal cylindrical shape. The central portion of the outer tub 3 is circularly opened, and the opened portion is formed as an outer tub inlet/outlet 6 for loading and unloading laundry.

A circular opening 10 slightly larger than the outer tank inlet/outlet 6 is formed concentrically with the outer tank inlet/outlet 6 corresponding to the outer tank inlet/outlet 6 at substantially the center of the front surface of the housing 2 . A door 11 is attached to the opening 10 so as to be openable and closable for the user to open when putting in and out the laundry. The door 11 also serves as a laundry entrance 20 of the drum 5, which will be described later.

A water supply port 12 connected to an external water supply facility or the like is provided on the back surface of the housing 2 , and the water supply port 12 and the outer tank 3 are connected by a water supply pipe 13 . When the water supply valve 15 attached to the middle part of the water supply pipe 13 is opened, the water supplied from the water supply port 12 through the water supply pipe 13 flows into the outer tank 3 and is accumulated in the outer tank 3. be done.

A drain port 16 is formed at the bottom of the outer tub 3 , and a drain pipe 17 is connected to the drain port 16 . By opening a drain valve 18 attached in the middle of the drain pipe 17, the water stored in the outer tank 3 is discharged out of the machine through the drain pipe 17. - 特許庁

A drum 5 is arranged in the outer tub 3 to accommodate the laundry. The drum 5 is formed in a cylindrical shape and is provided rotatably around the central axis N. As shown in FIG. The drum 5 has a laundry inlet/outlet 20 formed in the center of its front surface for loading and unloading laundry. A large number of holes 5a are bored in the peripheral wall of the drum 5 almost over the entire circumference, and the inside of the drum 5 communicates with the outer tank 3 through the holes 5a. As a result, for example, water accumulated in the outer tub 3 during the washing process also flows into the drum 5 through the holes 5a.

A rear wall of the drum 5 is provided with a rotating shaft 30 projecting rearward along the central axis N. As shown in FIG. A center portion of the rotating shaft 30 is rotatably held by a bearing 31 of the outer tub 3 , and a drum pulley 32 is attached to the rear end portion of the rotating shaft 30 .

A motor 33 for rotationally driving the drum 5 is arranged at the lower rear portion of the outer tub 3 . The motor 33 is rotatably provided with a drive shaft 34 for transmitting its driving force. The drive shaft 34 extends forward and has a motor pulley 35 attached to its front end. A belt 36 is stretched between the drum pulley 32 and the motor pulley 35 with a predetermined tension. It is transmitted to the shaft 30 and the drum 5 is rotated.

A first intake duct 50 is provided in the upper right portion of the peripheral wall of the outer tub 3, as shown in FIG. An inlet 51 is formed in a substantially rectangular shape slightly forward in the center of the lower surface of the first air intake duct 50 (the outer peripheral surface of the peripheral wall of the outer tank 3). and communicates with the outer tank 3. An air intake duct inlet 52 is formed in a circular shape at the rear portion of the upper surface of the first air intake duct 50 .

A second air intake duct 53 is provided above the first air intake duct 50 . The second intake duct 53 is fixed to the housing 2 with a fixing member (not shown). An intake duct inlet 54 is formed at the front lower end of the second intake duct 53 and communicates with the outside of the machine. An air intake duct outlet 55 is formed in a circular shape at the lower end portion of the other end of the second air intake duct 53 opposite to the side where the air intake duct inlet 54 is formed. The intake duct inlet 52 of the first intake duct 50 and the intake duct outlet 55 of the second intake duct 53 are connected by an intake duct connecting pipe 56 .

A heater 57 is arranged inside the second intake duct 50 . The heater 57 is, for example, a gas heater that burns gas supplied from an external gas supply passage (not shown) and heats the surrounding air with the combustion heat. The air in duct 53 is heated. That is, during the drying process, heated air for drying the laundry is generated by the heating of the heater 57 .

As shown in FIG. 3, an exhaust duct 60 serving as a dry air passage for exhausting the air in the outer tub 3 to the outside of the machine is provided at the upper left portion of the peripheral wall of the outer tub 3 . The exhaust duct 60 has a first exhaust duct 61 , a second exhaust duct 63 , and an exhaust duct connecting pipe 65 that connects the first exhaust duct 61 and the second exhaust duct 63 .

The first exhaust duct 61 is a hollow box-shaped member extending in the front-rear direction and having a front surface, a rear surface, an upper surface, a left side surface, and a lower surface formed by the peripheral wall of the outer tank 3 . A substantially rectangular opening 60a is formed in the rear portion of the lower surface of the first exhaust duct 61 (the outer peripheral surface of the peripheral wall of the outer tank 3). is in communication with In addition, as shown in FIG. 1, an exhaust duct outlet 62 is formed in a circular shape on the upper surface of the first exhaust duct 61 .

The second exhaust duct 63 is provided above the first exhaust duct 61 and is a hollow box-shaped member extending in the front-rear direction and having a substantially rectangular parallelepiped shape. The second exhaust duct 63 is fixed to the housing 2 by a fixing member (not shown), and as shown in FIG. 64 are formed. The exhaust duct outlet 62 of the first exhaust duct 61 and the communication hole 64 of the second exhaust duct 63 are connected by an exhaust duct connecting pipe 65 .

An exhaust duct outlet 66 is formed at the upper end portion of the other end of the second exhaust duct 63 opposite to the side where the communication hole 64 is formed. The exhaust duct outlet 66 protrudes from the upper surface of the housing 2 to the outside, and the outer tank 3 and the outside of the machine are separated from each other by the exhaust duct 60 including the first exhaust duct 61, the exhaust duct connecting pipe 65 and the second exhaust duct 63. communicated through

A fan 67 is arranged inside the second exhaust duct 63 . The fan 67 is driven during the drying process, for example, and causes the air in the drum 5 and the outer tub 3 to pass through the exhaust duct 60 and flow out of the apparatus through the exhaust duct outlet 66 .

Further, as shown in FIG. 1 , a filter 68 is provided between the fan 67 and the communication hole 64 inside the second exhaust duct 63 . The filter 68 is provided so as to incline obliquely upward from the front side to the rear side so as to separate the communication hole 64 side and the fan 67 side inside the second exhaust duct 63 . Captures the dirt, dust and lint (lint, fluff, etc.) it contains.

Inside the second exhaust duct 63, the lower end of the filter 68 is supported by a filter support base 68a, as shown in FIG. 4(a). The filter support base 68a has _a vertical portion 68a1 extending vertically on the fan 67 side of the communication hole 64, and _a horizontal portion _68a2 extending from the upper end of the vertical portion 68a1 in the direction opposite to the fan 67. As shown in FIG. The tip of the horizontal portion 68 a ₂ supports the lower end of the filter 68 above the communication hole 64 . Therefore, the horizontal portion _68a2 is arranged so as to partially cover the communicating hole 64, and the vicinity of the lower end portion of the filter 68 is arranged so as to overlap the communicating hole 64 in plan view.

As shown in FIGS. 4A and 4B, a moving member 80 is arranged around the communication hole 64 inside the second exhaust duct 63 . The moving member 80 has a lid member 81 and a support member 82 that supports the lid member 81 . The support member 82 is attached substantially parallel to the upper surface of the lid member 81 . The lid member 81 is a member that can take a closed position to close the communication hole 64 . The support member 82 is configured to be vertically swingable about a fulcrum 82a arranged near the vertical portion _68a1 of the filter support base 68a. That is, when the support member 82 swings about the fulcrum 82a, the lid member 81 moves vertically.

As shown in FIG. 5 , when the lid member 81 is at the lowest position, the lid member 81 is arranged at the closed position that closes the communication hole 64 . On the other hand, when the lid member 81 is at the maximum open position which is the most upwardly away from the closed position, the top surface of the lid member 81 is arranged at a position where it contacts the tip of the horizontal portion _68a2 of the filter support base 68a. . The lid member 81 is movable between the lowest position and the maximum open position, and the distance from the closed position changes according to the position.

The support member 82 is swingably attached to a fulcrum 82a, and when the fan 67 is not driven, the lid member 81 is arranged at the lowest position by its own weight. For example, during washing, the fan 67 is stopped and does not generate wind, so the cover member 81 is arranged at the closed position. Therefore, in the washing process, even if the drum 5 rotates at high speed and water splashes toward the communication hole 64 of the second exhaust duct 63, the communication hole 64 is closed by the cover member 81. , the water collides with the lid member 81 and does not enter the second exhaust duct 63 . Therefore, water does not reach the filter 68 and the filter 68 does not get wet.

A rubber packing 83 is attached to the outer peripheral portion of the lower surface of the lid member 81 over the entire circumference. Therefore, when the lid member 81 is in the closed position, the sealability between the outer peripheral portion of the lid member 81 and the peripheral portion of the communication hole 64 is enhanced.

During the drying operation, the lid member 81 is drawn toward the filter 68 by the wind generated by the fan 67 to open the communication hole 64 . At this time, since the lid member 81 does not block the air passage, the normal drying air can pass through. In the drying process, the position between the lowest position and the maximum opening position of the lid member 81 depends on the flow rate of the air flowing into the second exhaust duct 63 through the communication hole 64. Determined.

A position switch 85 that switches between an ON state and an OFF state according to the position of the moving member 80 is attached to the fulcrum 82a. The position switch 85 is turned on when the support member 82 swings upward so that the cover member 81 is arranged at the maximum opening position, and the support member 85 is turned on so that the cover member 81 is arranged below the maximum opening position. When 82 swings upward, it is turned off. In this embodiment, the position switch 85 is used to detect whether the lid member 81 is at the maximum open position.

As described above, when the fan 67 is driven in the drying process, the negative pressure pulls the cover member 81 upward. At this time, as the number of rotations of the fan 67 increases, the cover member 81 moves away from the lowest position, and the effective cross-sectional area of the drying air passage is increased from fully closed to maximum open depending on the opening angle of the cover member 81. Change.

In the washing/drying machine 1 of the present embodiment, the fan 67 is driven at a predetermined number of revolutions or more in the drying process, and the opening angle of the lid member 81 that is sucked up by the air pressure of the drying air by the fan 67 and rotated upward to open. is above a certain level, that is, the lid member 81 is arranged at the maximum opening position, the rotation of the fan 67 is controlled to increase or decrease the air volume.

FIG. 6 is a control block diagram of the washing/drying machine 1. As shown in FIG. As shown in FIG. 6, the control unit 100 of the washing/drying machine 1 is composed of, for example, a microcomputer, and includes a CPU, a ROM storing a program for controlling the operation of the washing/drying machine 1, and the program. and a RAM for temporarily storing data and the like used when executing The operation of the washer/dryer 1 is controlled by the controller 100 . The control unit 100 is connected to the position switch 85, the fan 67, and the clogged filter display unit 2a.

In the washing/drying machine 1 of the present embodiment, a predetermined number of rotations is set in advance as the number of rotations of the fan 67 during the drying process. Therefore, when the fan 67 is driven at a predetermined number of revolutions at the start of the drying process, the cover member 81 is pulled by the negative pressure at that number of revolutions, and the cover member 81 is arranged at the maximum opening position. is set to Note that the above setting is performed in a state where the filter 68 is hardly clogged with dust or the like (a state in which filter clogging does not occur).

The control unit 100 detects whether the lid member 81 is at the maximum opening position or below the maximum opening position depending on whether the position switch 85 is on or off. .

The point of detecting whether the lid member 81 is at the maximum opening position will be described. In the washer/dryer 1, when a part of the filter 68 is clogged with dust due to a long drying operation, the resistance of the filter 68 increases and the fan 67 is driven at a predetermined number of revolutions. Nevertheless, the airflow through the exhaust duct 60 is reduced. Then, the negative pressure that pulls the lid member 81 decreases, and the lid member 81 moves below the maximum opening position. Therefore, the control unit 100 determines whether or not the filter 68 is clogged by detecting whether the cover member 81 is at the maximum opening position.

When the lid member 81 is below the maximum opening position (when the filter 68 is clogged), the control unit 100 increases the rotational speed of the fan 67 by a predetermined specified number (for example, 50 rpm). The rotation speed of the fan 67 is controlled so as to In this embodiment, it is determined whether or not the lid member 81 is at the maximum opening position after the fan 67 is controlled to increase in rotation speed by a specified number. Until the determination is made, the rotation speed of the fan 67 is controlled to increase by a specified number.

The filter clogging display section 2a is provided on the front surface of the housing 2 and includes, for example, an LED. The filter clogging display section 2a lights up when the filter 68 is clogged with dust and the like, making it difficult for the air to pass through, to notify the occurrence of the filter clogging. In this embodiment, when the lid member 81 is below the maximum opening position after the drying process is started, the control unit 100 determines that the filter is clogged, and displays the clogged filter display unit 2a. Light.

A method of controlling the rotation speed of the fan 67 in the drying process will be described with reference to FIG. FIG. 7 is a flow chart illustrating a method of controlling the number of revolutions of the fan 67 during the drying process.

<Step S1>
In step S1, the control unit 100 drives the fan 67 at a predetermined rotational speed to start the drying process. After that, the process proceeds to step S2.

<Step S2>
In step S2, the control section 100 determines whether or not the lid member 81 is at the maximum opening position. When the control unit 100 determines that the lid member 81 is at the maximum opening position, the process returns to step S3. When the control unit 100 determines that the lid member 81 is not at the maximum opening position, the process proceeds to step S4.

<Step S3>
In step S3, the control unit 100 determines whether or not a predetermined time set in advance as the duration of the drying process has elapsed. If the control unit 100 determines that the predetermined time has passed, the process ends. If the controller 100 determines that the predetermined time has not elapsed, the process returns to step S2.

<Step S4>
In step S4, the control unit 100 turns on the clogged filter display unit 2a because the lid member 81 is not at the maximum opening position. After that, the process proceeds to step S5.

In the present embodiment, when the control unit 100 first determines that the lid member 81 is not at the maximum opening position after the drying process is started, the control unit 100 turns on the clogged filter display unit 2a, After that, the filter clogging indicator 2a continues to light up until the drying process ends.

<Step S5>
In step S5, the controller 100 increases the rotation speed of the fan 67 by a specified number. After that, the process proceeds to step S6.

<Step S6>
In step S6, the control section 100 determines whether or not the lid member 81 is at the maximum opening position. When the control unit 100 determines that the lid member 81 is at the maximum opening position, the process proceeds to step S3. When the control unit 100 determines that the lid member 81 is not at the maximum opening position, the process returns to step S5.

The washing and drying machine 1 of this embodiment includes an outer tub 3 that rotatably accommodates a substantially cylindrical drum 5, and an exhaust duct 60 through which air flowing out from an opening 60a formed in an upper peripheral wall of the outer tub 3 passes. , a fan 67 that generates an airflow passing through the exhaust duct 60, a moving member 80 that moves according to the flow rate of the air passing through the exhaust duct 60, and the rotation speed of the fan 67 based on the position of the moving member 80 and a control unit 100 which is a control means for controlling the.

With such a configuration, even if the air flow rate supplied into the outer tub 3 decreases for some reason during the drying process, the fan 67 rotates based on the position of the moving member 80 that moves according to the air flow rate. Since the number is controlled, it is possible to prevent the air flow rate supplied into the outer tub 3 from decreasing and the drying efficiency in the drying process from significantly deteriorating.

In the washing and drying machine 1 of this embodiment, the exhaust duct 60 includes a first exhaust duct 61 communicating with the inside of the outer tub 3 through an opening 60a, and a second exhaust duct 63 arranged above the first exhaust duct 61. The second exhaust duct 63 communicates with the inside of the first exhaust duct 61 through a communication hole 64 formed in the lower surface thereof, and the moving member 80 closes the communication hole 64. A lid member 81 that can be positioned, and a support member 82 that supports the lid member 81 so that the lid member 81 opens the communication hole 64 to change the distance from the closed position.

With such a configuration, when the fan 67 is stopped, the lid member 81 closes the communication hole 64 formed in the lower surface of the second exhaust duct 63. Therefore, the communication hole 64 is closed during the washing process and the rinsing process. Water entering the second exhaust duct 63 from 64 can be prevented from adhering to the filter 68 .

The washer/dryer 1 of the present embodiment includes a filter 68 arranged in the exhaust duct 60 through which the air flowing through the exhaust duct 60 passes.

With such a configuration, since the moving member 80 moves according to the clogging state of the filter 68 in the exhaust duct 60, even if the flow rate of air supplied to the outer tank 3 decreases due to clogging of the filter 68, Therefore, it is possible to prevent the drying efficiency of the drying process from significantly deteriorating due to a decrease in the flow rate of the air supplied to the outer tub 3 .

The washing/drying machine 1 of the present embodiment is provided with the filter clogging display section 2a, which is an informing means for informing that the filter is clogged. Control.

With such a configuration, when the filter 68 is clogged, the occurrence of filter clogging can be notified by the filter clogging display section 2a.

In the washer/dryer 1 of the present embodiment, the filter 68 is arranged such that at least a portion thereof overlaps the communication hole 64 in plan view.

With such a configuration, the area of the filter 68 can be increased compared to the case where the filter 68 and the communication hole 64 are arranged so as not to overlap each other in plan view. Therefore, it is possible to suppress a decrease in the amount of air passing through the exhaust duct 60 due to clogging of the filter 68 .

Although the embodiment of the present invention has been described above, the configuration of the present embodiment is not limited to the above, and various modifications are possible.

For example, in the above embodiment, the exhaust duct 60 has the first exhaust duct 61, the second exhaust duct 63, and the exhaust duct connecting pipe 65, but the configuration of the exhaust duct 60 is arbitrary.

In the above embodiment, the moving member 80 has the cover member 81 and the support member 82, but the configuration of the moving member 80 is arbitrary. For example, the moving member 80 may not include the lid member 81 that can take the closed position to close the communication hole 64 . If the moving member 80 includes a lid member 81 that can take a closed position to close the communication hole 64, a gas-type clothes washer/dryer such as a laundromat equipped with a lint filter in the exhaust air passage may be used to place the futon in the washing tub. Even if centrifugal force washing is carried out at a slightly high rotation speed to the extent that it sticks to the lint filter, a large amount of washing water is swirled up, and this swirled water enters the exhaust air passage side and adheres to the lint filter. can prevent As a result, cleaning becomes difficult when the lint filter is wet, and cleaning is not hindered even when the collected dust is dried and solidified.

In the above-described embodiment, the case where the moving member 80 reduces the amount of air passing through the exhaust duct 60 due to clogging of the filter has been described, but the present invention is not limited to this. The present invention can also be applied when the flow rate of the air passing through the exhaust duct 60 decreases due to some factor other than filter clogging.

In the above-described embodiment, the filter clogging display section 2a is provided to notify that the filter clogging has occurred. Although the case of lighting is described, the present invention is not limited to this. For example, when the lid member 81 is separated from the maximum opening position by a predetermined distance, it may be determined that the filter clogging has occurred, and the filter clogging display section 2a may be turned on.

In the above embodiment, the case of having the filter clogging display unit 2a for notifying that the filter has clogged has been described, but the present invention is not limited to this. The washing/drying machine 1 of the present invention does not have to have an informing means for informing that the filter is clogged.

In the above-described embodiment, the filter clogging display section 2a is provided as an informing means for informing that the filter has become clogged, but the informing means may have any configuration. For example, the notification means may use sound to notify that the filter is clogged.

In the above-described embodiment, the case where the filter 68 is arranged so that at least a part of it overlaps with the communication hole 64 in a plan view has been described, but it is not limited to this. For example, the entire filter 68 may be arranged at a position different from the communication hole 64 in plan view.

In the above-described embodiment, the position switch 85 that switches between the ON state and the OFF state according to the position of the moving member 80 is provided. It is determined whether the lid member 81 is at the maximum opening position or whether the lid member 81 is below the maximum opening position, but is not limited to this. For example, instead of the position switch 85, an angle sensor that detects the angle of the support member 82 may be attached to the fulcrum 82a. The angle sensor can detect the opening angle of the lid member 81 (the angle by which the lid member 81 moves with respect to the closed position).

In the above embodiment, when the lid member 81 is not at the maximum opening position in the drying process, the number of revolutions of the fan 67 is controlled to increase by a specified number, and then it is determined that the lid member 81 is at the maximum opening position. Although the number of rotations of the fan 67 is controlled to increase by a specified number until the number of rotations of the fan 67 increases, any control method may be used to increase the number of rotations of the fan 67 .

For example, when an angle sensor for detecting the angle of the support member 82 is provided as described above, the control unit 100 detects the degree of decrease in the opening angle of the lid member 81 (when the opening angle of the lid member 81 is at the maximum opening position). is detected, and the number of rotations of the fan 67 is increased according to the degree of decrease in the opening angle of the lid member 81 so that the lid member 81 is positioned at the maximum opening position. You may control rotation speed. That is, when the degree of decrease in the opening angle of the lid member 81 is small, the control unit 100 determines that the clogged state of the filter 68 has not deteriorated so much. , it is determined that the clogging state of the filter 68 has considerably deteriorated. In this case, a test or the like is performed in advance to determine how much the number of revolutions of the fan 67 should be increased according to the degree of decrease in the opening angle of the lid member 81 so that the lid member 81 is arranged at the maximum opening position. The number of rotations of the fan 67 at that time, the relationship between the degree of decrease in the opening angle of the lid member 81 and the amount of increase in the number of rotations of the fan 67, and the like are obtained and stored in the control unit 100 .

Although the case where the rubber packing 83 is attached to the outer peripheral portion of the lower surface of the lid member 81 has been described in the above embodiment, the present invention is not limited to this. For example, even when the rubber packing 83 is attached to the periphery of the communication hole 64 , the sealability between the periphery of the lid member 81 and the periphery of the communication hole 64 is enhanced. Moreover, the rubber packing 83 that improves the sealing performance between the outer peripheral portion of the lid member 81 and the peripheral portion of the communication hole 64 may be omitted.

In the above embodiment, when the control unit 100 first determines that the lid member 81 is not at the maximum opening position after the drying process is started, the control unit 100 turns on the clogged filter display unit 2a, After that, the case where the filter clogging indicator 2a is kept on until the drying process ends has been described, but the present invention is not limited to this. For example, the control unit 100 may continue lighting the clogged filter display unit 2a even after the drying process is completed.

Other configurations can also be modified in various ways without departing from the gist of the present invention.

1 Washer/dryer 3 Outer tub 5 Drum 60 Exhaust duct 60a Opening 61 First exhaust duct 63 Second exhaust duct 64 Communication hole 67 Fan 68 Filter 80 Moving member 81 Lid member 82 Support member 100 Control means

Claims (5)

an outer tank that rotatably accommodates a substantially cylindrical drum;
an exhaust duct through which air flowing out from an opening formed in an upper peripheral wall of the outer tank passes;
a fan for generating an airflow passing through the exhaust duct;
a moving member that moves according to the flow rate of air passing through the exhaust duct;
and control means for controlling the number of revolutions of the fan based on the position of the moving member. The exhaust duct is
a first exhaust duct communicating with the inside of the outer tank through the opening;
a second exhaust duct disposed above the first exhaust duct,
The second exhaust duct communicates with the inside of the first exhaust duct via a communication hole formed in the lower surface thereof,
The moving member is
a lid member capable of taking a closed position for closing the communication hole;
2. The washing and drying machine according to claim 1, further comprising a supporting member that supports said lid member such that said lid member opens said communication hole and the distance from said closed position changes. A filter disposed in the exhaust duct and through which air flowing through the exhaust duct passes;
3. The washing and drying machine according to claim 1, wherein the moving member moves according to the clogging state of the filter. A notification means for notifying that the filter clogging has occurred,
4. The washing and drying machine according to claim 3, wherein said control means controls said notification means based on the position of said moving member. 5. The washing and drying machine according to claim 3, wherein the filter is arranged so that at least part of it overlaps with the communication hole in a plan view.

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