JP2009254634A - Drying machine and washing/drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drying machine and a washing/drying machine which are capable of preventing an inaccurate detection of a temperature detection part by preventing adhesion and accumulation of foreign matters to and on the temperature detection part. <P>SOLUTION: Air for drying laundry in a rotary drum flows in the interior of an air duct 28. The air duct 28 is provided with the temperature detection part 1 for detecting the temperature of the air. The temperature detection part 1 is attached with a foreign matter accumulation prevention part 2. A part of the foreign matter accumulation prevention part 2 is located on an upstream side of the temperature detection part 1, and its height is formed lower than that of the temperature detection part 1. Therefore, most of the air flowing toward the temperature detection part 1 changes its direction just before the temperature detection part 1 by the foreign matter accumulation prevention part 2, and part of the air abuts on the temperature detection part 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a dryer and a washing dryer.

  2. Description of the Related Art Conventionally, a home-use washing and drying machine includes a water tank, a rotary tank that is rotatably disposed in the water tank, and a blower unit that is disposed outside the water tank. In this washing / drying machine, during the drying operation, the air blown out from the air blowing unit is heated by the heating unit to become a high temperature and enters the rotating tub. Thereby, the said hot air hits the laundry in a rotating tub, and as a result, the laundry dries.

  A temperature detection unit is provided in a flow path for guiding high-temperature air from the heating unit to the rotating tank. The output of this temperature detection part is sent to a control part, and a control part controls the output of a heating part based on the output of a temperature detection part. As a result, air of an appropriate temperature hits the laundry.

  By the way, the air flowing from the heating unit toward the rotating tub is mixed with foreign matters such as lint generated from clothing. For this reason, the said foreign material will adhere and accumulate on a temperature detection part. In this case, due to the heat insulating effect of the foreign matter, there is a problem that the temperature detection unit cannot accurately adjust the temperature of the air in the flow path, an error occurs, and the drying operation cannot be performed.

  This problem is solved, for example, in Japanese Patent Application Laid-Open No. 7-31782 (Patent Document 1). More specifically, in the washer / dryer disclosed in Patent Document 1, a shielding plate is provided on the upstream side of the temperature detection unit so that air traveling into the rotating tub does not hit the temperature detection unit. Accordingly, the foreign matter in the air is prevented from hitting the temperature detection unit, and the adhesion and accumulation of the foreign matter to the temperature detection unit is prevented.

However, in the washing and drying machine disclosed in Patent Document 1, since air flowing into the rotating tub does not hit the temperature detection unit, it is difficult to accurately detect the temperature of the air with the temperature detection unit.
Japanese Patent Laid-Open No. 7-31782 (FIG. 2)

  Therefore, an object of the present invention is to provide a dryer and a washing dryer that can prevent the adhesion and accumulation of foreign matter on the temperature detection unit and prevent the detection of the temperature detection unit from becoming inaccurate. There is.

In order to solve the above problems, the dryer of the present invention is:
An outer box,
A storage tank that is disposed in the outer box and stores an object to be dried;
A heating unit for heating the air supplied into the storage tank in order to dry the object to be dried;
A blowing section for flowing the air into the storage tank;
A temperature detection unit that is provided in a flow path through which the air flows and detects the temperature of the air;
Based on the detection result of the temperature detection unit, a control unit that executes a drying operation for drying the object to be dried,
At least a part is provided on the upstream side of the temperature detection unit, and includes a foreign matter accumulation prevention unit that prevents foreign matter from accumulating on the temperature detection unit,
In the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit is lower in height than the temperature detection unit or narrower than the temperature detection unit. Yes.

  According to the dryer having the above-described configuration, since at least a part of the foreign matter accumulation prevention unit is provided on the upstream side of the temperature detection unit, most of the air traveling into the storage tank has a direction in which the foreign matter accumulation prevention unit flows. change.

  Therefore, most of the air traveling toward the inside of the storage tank is less likely to come into contact with the temperature detection unit, so that foreign matter in the air can be prevented from accumulating on the temperature detection unit.

  Further, in the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit is lower in height than the temperature detection unit or narrower than the temperature detection unit, A part of the air that goes to hits the temperature detector.

  Therefore, the temperature of the air which goes into the storage tank can be accurately detected by the temperature detector. That is, it is possible to prevent inaccurate detection by the temperature detection unit.

In the dryer of one embodiment,
The foreign matter accumulation prevention unit is in contact with the temperature detection unit.

  According to the dryer of the embodiment, since the foreign matter accumulation prevention unit is in contact with the temperature detection unit, the temperature of the air going into the storage tank is transmitted to the temperature detection unit via the foreign matter accumulation prevention unit.

  Therefore, the temperature of the air which goes into the storage tank can be detected more accurately by the temperature detection unit.

In the dryer of one embodiment,
The foreign matter accumulation preventing portion is made of a metal having rust prevention properties.

  According to the dryer of the said embodiment, since the said foreign material accumulation prevention part is comprised with the rust prevention metal, it can transmit the heat | fever of the air which goes into a storage tank efficiently to a temperature detection part.

  Moreover, since the said metal has rust prevention property, it can prevent that a foreign material deposition prevention part rusts.

In the dryer of one embodiment,
The foreign matter accumulation prevention unit is detachable from the temperature detection unit.

  According to the dryer of the above embodiment, the foreign matter accumulation prevention unit can be attached to and detached from the temperature detection unit. Therefore, the foreign matter accumulation prevention unit can be easily maintained by removing it from the temperature detection unit.

In the dryer of one embodiment,
In the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit becomes narrower as it goes from the temperature detection unit to the upstream side.

  According to the dryer of the above embodiment, the width of the upstream portion of the foreign matter accumulation prevention unit from the temperature detection unit becomes narrower from the temperature detection unit to the upstream side. It is possible to prevent the air flow from being disturbed by the foreign matter accumulation prevention unit.

In the dryer of one embodiment,
The end of the upstream side of the foreign matter accumulation prevention unit is rounded.

  According to the dryer of the above-described embodiment, the end on the upstream side of the foreign matter accumulation prevention unit is rounded so that the foreign matter in the air flowing in the flow path is the upstream end of the foreign matter deposition prevention unit. Therefore, it is possible to suppress the accumulation of foreign matters on the foreign matter accumulation preventing portion.

The washing and drying machine of the present invention is
An outer box,
A water tank disposed in the outer box;
A rotating tub disposed in the water tub so as to be freely rotatable;
A heating unit for heating the air supplied into the rotating tub to dry the laundry,
A blowing section for flowing the air into the rotating tank;
A temperature detection unit that is provided in a flow path through which the air flows and detects the temperature of the air;
Based on the detection result of the temperature detection unit, a control unit that performs a drying operation for drying the laundry,
At least a part is provided on the upstream side of the temperature detection unit, and includes a foreign matter accumulation prevention unit that prevents foreign matter from accumulating on the temperature detection unit,
In the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit is lower in height than the temperature detection unit or narrower than the temperature detection unit. Yes.

  According to the washing and drying machine having the above-described configuration, since at least a part of the foreign matter accumulation prevention unit is provided on the upstream side of the temperature detection unit, a large part of the air flowing into the rotating tank flows in the foreign matter accumulation prevention unit. Changes.

  Therefore, most of the air traveling toward the inside of the rotating tub becomes difficult to contact the temperature detection unit, so that foreign matter in the air can be prevented from accumulating on the temperature detection unit.

  Further, in the foreign matter accumulation prevention part, the part upstream of the temperature detection part is lower in height than the temperature detection part or narrower in width than the temperature detection part. A part of the air that goes to hits the temperature detector.

  Therefore, the temperature of the air which goes to the inside of the rotating tub can be accurately detected by the temperature detector. That is, it is possible to prevent inaccurate detection by the temperature detection unit.

In the washing and drying machine of one embodiment,
The foreign matter accumulation prevention unit is in contact with the temperature detection unit.

  According to the washing and drying machine of the above embodiment, since the foreign matter accumulation prevention unit is in contact with the temperature detection unit, the temperature of the air going into the rotating tub is transmitted to the temperature detection unit via the foreign matter accumulation prevention unit.

  Therefore, the temperature of the air heading into the rotating tub can be detected more accurately by the temperature detection unit.

In the washing and drying machine of one embodiment,
The foreign matter accumulation preventing portion is made of a metal having rust prevention properties.

  According to the washing and drying machine of the above embodiment, since the foreign matter accumulation preventing unit is made of metal, it is possible to efficiently transmit the heat of the air toward the inside of the rotating tub to the temperature detecting unit.

  Moreover, since the said metal has rust prevention property, it can prevent that a foreign material deposition prevention part rusts with the water | moisture content in the air which goes into a rotation tank.

In the washing and drying machine of one embodiment,
The foreign matter accumulation prevention unit is detachable from the temperature detection unit.

  According to the washer / dryer of the above embodiment, the foreign matter accumulation prevention unit can be attached to and detached from the temperature detection unit, so that maintenance such as cleaning can be easily performed by detaching from the temperature detection unit.

In the washing and drying machine of one embodiment,
In the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit becomes narrower as it goes from the temperature detection unit to the upstream side.

  According to the washer / dryer of the above embodiment, the width of the upstream portion of the foreign matter accumulation prevention unit from the temperature detection unit becomes narrower from the temperature detection unit to the upstream side. It is possible to prevent the air flow that is directed from being disturbed by the foreign matter accumulation prevention unit.

In the washing and drying machine of one embodiment,
The end of the upstream side of the foreign matter accumulation prevention unit is rounded.

  According to the washing / drying machine of the above-described embodiment, the upstream end of the foreign matter accumulation prevention unit is rounded so that foreign matter in the air flowing in the flow path is upstream of the foreign matter accumulation prevention unit. Since it is difficult to be caught at the end portion, it is possible to suppress the accumulation of foreign matters on the foreign matter accumulation preventing portion.

In the washing and drying machine of one embodiment,
The foreign matter accumulation prevention unit is disposed so as to be immersed in the washing water supplied into the water tank.

  According to the washing and drying machine of the above embodiment, even if foreign matter accumulates on the foreign matter accumulation prevention unit, the foreign matter accumulation prevention unit is disposed so as to be immersed in the washing water supplied into the water tank. Foreign matter on the foreign matter accumulation prevention unit can be washed away with washing water.

In the washing and drying machine of one embodiment,
The air blowing unit is disposed so as to be immersed in the washing water supplied into the water tank, and generates a water flow in the washing water.

  According to the washing and drying machine of the above embodiment, even if foreign matter accumulates on the foreign matter accumulation prevention unit, the foreign matter on the foreign matter accumulation prevention unit is washed away by generating a water flow in the washing water by the blower unit. Can be washed away with.

One embodiment of the washing and drying machine,
A water flow generation unit is provided for generating a water flow in the wash water supplied into the water tank.

  According to the washing and drying machine of the above embodiment, even if foreign matter accumulates on the foreign matter accumulation prevention unit, the foreign matter on the foreign matter accumulation prevention unit is washed by generating a water flow in the washing water by the water flow generation unit. Can be washed away with water.

In the washing and drying machine of one embodiment,
The said control part performs control for the flow direction of the said water flow to switch from a normal direction to a reverse direction.

  According to the washing / drying machine of the above embodiment, the flow direction of the water flow is switched from the normal direction to the reverse direction by the control of the control unit, so that two different forces are applied to the foreign matter of the foreign matter accumulation prevention unit, As a result, the effect of removing foreign matter from the foreign matter accumulation prevention unit can be enhanced.

  According to the dryer of the present invention, since at least a part of the foreign matter accumulation prevention unit is provided on the upstream side of the temperature detection unit, the flow direction of most of the air toward the storage tank is changed by the foreign matter accumulation prevention unit. .

  Therefore, most of the air traveling toward the inside of the storage tank is less likely to come into contact with the temperature detection unit, so that foreign matter in the air can be prevented from accumulating on the temperature detection unit.

  Further, in the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit is lower in height than the temperature detection unit or narrower than the temperature detection unit, A part of the air that goes to hits the temperature detector.

  Therefore, the temperature of the air which goes into the storage tank can be accurately detected by the temperature detector. That is, it is possible to prevent inaccurate detection by the temperature detection unit.

  According to the washer / dryer of the present invention, since at least a part of the foreign matter accumulation prevention unit is provided on the upstream side of the temperature detection unit, most of the air flowing into the rotary tub flows in the direction in which the foreign matter accumulation prevention unit flows. Changes.

  Therefore, most of the air traveling toward the inside of the rotating tub becomes difficult to contact the temperature detection unit, so that foreign matter in the air can be prevented from accumulating on the temperature detection unit.

  Further, in the foreign matter accumulation prevention part, the part upstream of the temperature detection part is lower in height than the temperature detection part or narrower in width than the temperature detection part. A part of the air that goes to hits the temperature detector.

  Therefore, the temperature of the air which goes to the inside of the rotating tub can be accurately detected by the temperature detector. That is, it is possible to prevent inaccurate detection by the temperature detection unit.

  Hereinafter, a dryer and a washing dryer according to the present invention will be described in detail with reference to embodiments shown in the drawings.

(First embodiment)
FIG. 1 is a schematic view of a drum type washing / drying machine according to a first embodiment of the present invention as viewed obliquely from above.

  The drum type washing and drying machine includes an outer box 3. An outer box opening 33 is provided substantially at the center of the front surface of the outer box 3. Further, a door 4 is rotatably attached to the front surface of the outer box 3 by a hinge mechanism, and the door 4 opens and closes the outer box opening 33. An operation unit 5 having operation keys and a display unit is provided at the upper front of the outer box 3. When the user operates the operation keys of the operation unit 5, the washing process, the rinsing process, the dehydrating process, and the drying process are sequentially performed, or each process is performed independently.

  A door switch (not shown) that detects opening / closing of the door 4 is attached to the door 4. Based on the output signal of the door switch, an error is displayed on the display unit of the operation unit 5 or an alarm is issued.

  FIG. 2 is a schematic sectional view taken along line II-II in FIG.

  The drum-type washing and drying machine includes a bottomed cylindrical water tank 7 disposed in the outer box 3, a bottomed cylindrical rotary drum 9 rotatably disposed in the water tank 7, and the rotary drum 9. A heater 27 for heating the air supplied to the inside, a blower 34 for flowing the air heated by the heater 27 into the rotary drum 9, and a blower duct 28 for guiding the air heated by the heater 27 into the rotary drum 9. The substantially cylindrical temperature detection unit 1 provided in the air duct 28, a drive mechanism 15 that rotationally drives the rotary drum 9, and two vibration damping dampers 8 that elastically support the rear part of the water tank 7 are provided. Yes. The rotating drum 9 is an example of a rotating tank, the heater 27 is an example of a heating unit, the blower 34 is an example of a blowing unit, and the blower duct 28 is an example of a flow path.

  A control circuit 21 is installed in front of the top surface of the outer box 3. The control circuit 21 is provided with a CPU (not shown) composed of a control unit and a calculation unit, and stores washing and dehydration charts and rules in advance. Further, the control circuit 21 executes a drying operation for drying the laundry based on a detection result of the temperature detection unit 1 described later. The control circuit 21 is an example of a control unit.

  In addition, a connection port 35 connected to a faucet or the like of the water supply is provided at the rear portion of the top surface of the outer box 3. A drain valve 17 for discharging the washing water in the water tub 7 to the outside of the machine is provided in the bottom of the outer box 3.

  The drain valve 17 is connected to the lower part of the water tank 7 through a drain duct 18. In the middle of the drainage duct 18, a lint filter 19 that can be taken out from the lower front portion of the outer box 3 is provided, and an air trap (not shown) is provided above the lint filter 19. The air trap is connected to a water level sensor (not shown) connected via a pressure guiding pipe (not shown). Based on the pressure change in the air trap detected by the water level sensor, the water level of the washing water in the water tank 7 can be detected.

  The drain valve 17 is connected to one end of a drain hose 23. The other end of the drain hose 23 protrudes outside the outer box 3.

  In the water tank 7, the central axis L1 is inclined with respect to the horizontal plane so that the rear part is lower than the front part. Further, a water tank opening 32 is provided on the front surface of the water tank 7. A packing 10 made of an elastic material such as rubber or soft resin is fixed to the opening edge of the water tank opening 32. As a result, when the door 4 is closed, the door 4 comes into close contact with the packing 10, so that the liquid in the water tank 7 can be prevented from leaking out of the water tank 7. Further, the water tank 7 is disposed sideways so that the water tank opening 32 faces the outer box opening 33.

  The central axis L1 passes through the center of gravity position P1 (see FIG. 3) in a cross section of the rotary drum 9 taken along the plane perpendicular to the rotational axis L2. The center axis L1 is substantially parallel to the rotation axis L2 of the rotary drum 9. More specifically, the central axis L1 of the water tank 7 is inclined so as to form an angle of 5 ° to 30 ° with respect to the horizontal direction. The rotating shaft L2 of the rotating drum 9 passes through the center of gravity position P2 (see FIG. 3) in a cross section of the rotating drum 9 taken along a plane perpendicular to the rotating shaft of the rotating drum 9.

  In addition, washing water accumulates in the water tank 7. When washing water is stored in the water tank 7, the washing water supply valve 12 is opened. Then, for example, tap water from the connection port 35 includes the detergent or softening agent in the detergent case 13 and becomes washing water, and flows into the rotating drum 9 from the water supply port 14.

  The rotating drum 9 is arranged such that the rotating shaft L2 is eccentric to the top surface side of the outer case 3 with respect to the central axis L1 of the water tank 7. A drum opening 22 that faces the outer box opening 33 and the water tank opening 32 is provided on the front surface of the rotary drum 9. The drum opening 22 has a larger diameter than the water tank opening 32. A plurality of small holes 20 are provided in the entire peripheral wall of the rotary drum 9. The small holes 20 are for circulating washing water, dry air, and the like between the space between the water tank 7 and the rotating drum 9 and the space inside the rotating drum 9.

  Further, a baffle 16 is provided on the inner wall surface of the rotary drum 9 so as to protrude inward in the radial direction. The baffles 16 are arranged at three locations in the circumferential direction at intervals of 120 °, for example. The baffle 16 works to repeat the lifting and dropping of the laundry as the rotating drum 9 rotates.

  A liquid balancer 11 is attached to the front portion of the rotating drum 9. The liquid balancer 11 encloses the drum opening 22 of the rotary drum 9 from the outside, and encloses the liquid balancer 11 in the liquid balancer 11 with an imbalance that is likely to occur due to bias of laundry and washing water when the rotary drum 9 rotates. Counteract by moving liquid.

  The blower 34 includes a fan case 30, a blower fan 25 (see FIG. 3) housed in the fan case 30, and a motor 24 that rotationally drives the blower fan 25.

  The air duct 39 is disposed between the inner wall at the lower part of the water tank 7 and the outer wall at the lower part of the rotating drum 9. The blower air flows into the blower duct 39 from the blower 34, and the air flows through the blower duct 39 and blows out from the blower outlet 29 into the rotary drum 9. The air outlet 29 is configured by the front end of the air duct 39.

  The anti-vibration damper 8 can absorb vibrations generated during the washing process, the rinsing process, and the dehydrating process.

  FIG. 3 is a schematic view of the water tank 7 as seen from the rear.

  The center C1 of the water tank opening 32 is on the top surface side of the outer case 3 with respect to the center C2 of the drum opening 22. That is, the water tank opening 32 is eccentric to the top surface side of the outer case 3 with respect to the drum opening 22.

  Moreover, the lower part of the water tank 7 has a convex shape protruding downward. The blower 34 is disposed so as to overlap the convex lower portion. Further, the dehumidifier 26 and the heater 27 are arranged adjacent to each other in the convex lower part.

  The dehumidifier 26 is located upstream of the blower 34. On the other hand, the heater 27 is located downstream of the blower 34. That is, the blower 34 is located downstream of the dehumidifier 26 and upstream of the heater 27.

  The blower fan 25 of the blower 34 is covered with a fan case 30 and disposed in an area that is immersed in washing water. The space in the fan case 30 communicates with the space in the air duct 28 and communicates with the space in the water tank 7 through the suction port 31. Thus, when the blower 34 is driven, the air dehumidified by the dehumidifier 26 is sucked into the fan case 30 from the suction port 31, blown in the direction of the arrow in the figure, heated by the heater 27, and then blown out. 29 is blown out into the rotary drum 9.

  FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG.

  A foreign matter accumulation prevention unit 2 is attached to the temperature detection unit 1. The foreign matter accumulation prevention unit 2 is detachable from the temperature detection unit 1. In addition, the foreign matter accumulation prevention unit 2 becomes narrower as it goes upstream from the temperature detection unit 1. And the temperature detection part 1 and the foreign material deposition prevention part 2 are arrange | positioned in the area | region immersed in washing water.

  FIG. 5 is a schematic plan view of the foreign matter accumulation prevention unit 2 in a state removed from the temperature detection unit 1. FIG. 6 is a schematic plan view of the foreign matter accumulation prevention unit 2 attached to the temperature detection unit 1.

  As shown in FIG. 5, the foreign matter accumulation prevention unit 2 is formed by bending a single stainless steel plate. The foreign matter accumulation prevention unit 2 has two protruding portions 2a, two C-shaped ring-shaped portions 2b, and two claw portions 2c.

  The protrusion 2 a is located on the upstream side of the temperature detection unit 1. Further, the tip end portion (upstream end portion) of the protruding portion 2a is rounded.

  The C-shaped ring-shaped portion 2b is in a state as shown in FIG. 6 by applying an external force. That is, the distance between the C-shaped ring shapes 2b can be increased by the external force. Further, when the external force is removed, the C-shaped ring shape 2b returns to the state shown in FIG.

  Further, when the foreign matter accumulation prevention unit 2 is attached to the temperature detection unit 1, the two C-shaped ring shapes 2 b sandwich the temperature detection unit 1 as shown in FIG. 6. At this time, each nail | claw part 2c engages in the form which bites into the temperature detection part 1. FIG. Thereby, even if the foreign matter accumulation prevention unit 2 receives vibrations such as dehydration, it is difficult to come off from the temperature detection unit 1.

  FIG. 7 is a schematic cross-sectional view seen from the line VII-VII in FIG.

  The temperature detector 1 protrudes from the inner wall surface of the air duct 28 toward the inside. This protruding height is higher than the height of the foreign matter accumulation preventing unit 2. That is, the height of the temperature detection unit 1 with respect to the inner wall surface of the air duct 28 is higher than the height of the protrusion 2 a of the foreign matter accumulation prevention unit 2 with respect to the inner wall surface of the air duct 28.

  Hereinafter, the washing operation of the drum type washing and drying machine will be described with reference to FIG.

  When the laundry is put into the rotary drum 9 from the drum opening 22 and the door 4 is closed, the door packing 10 is brought into close contact with the periphery of the door 4 (the state shown in FIG. 2), and the water tank 7 is sealed. When the detergent is put into the detergent case 13 and the user operates the operation unit 5, the washing operation is started by a command from the control circuit 21.

  In the washing operation, first, the water supply operation of the washing process is started, the door 4 is locked, and the water supply valve 12 is opened. When the water supply valve 12 is opened, tap water enters a detergent case 13 from a connection hose (not shown) and flows into the water tank 7 and the rotating drum 9 through the water supply port 14 together with the detergent. And if the water level in the water tank 7 reaches a predetermined water level, a water level sensor (not shown) will detect and the water supply valve 12 will be closed. Next, the drive mechanism 15 drives the rotary drum 9 to rotate. At this time, the drive mechanism 15 rotationally drives the rotary drum 9 for a predetermined time according to a chart or rule stored in advance in the CPU in the control circuit 21. The chart stored in advance in the CPU sets the rotation speed, reversal time, reversal period, etc. according to the type of washing process, rinsing process, dehydration process, and drying process, or the type and amount of laundry. ing. These charts are programmed to be arbitrarily selected by the user or automatically selected.

  When the washing process is completed, the process proceeds to a rinsing process that consists of repeating a plurality of rinsing dehydration operations and stirring rinsing operations alternately. In this rinsing step, first, the drain valve 17 is opened, and the washing water in the water tank 7 is discharged to the outside of the outer box 3 through the drain duct 18 and the drain hose 23. When this is finished, the rotary drum 9 rotates according to the dehydration chart, whereby the rinse dehydration operation is performed. As a result, the washing water contained in the laundry is discharged to the inner wall of the water tank 7 through the small holes 20 provided in the entire peripheral wall of the rotating drum 9 by centrifugal force due to dehydration rotation. The washing water travels along the inner wall of the water tank 7, and the washing water flowing down to the lower part of the water tank 7 is discharged to the outside through the drainage duct 18 and the drainage hose 23. The dehydration chart is set so that the rotation of the rotary drum 9 stops midway or the rotation speed of the rotary drum 9 changes midway, and is a chart suitable for dehydration of washing water containing a lot of detergent. ing. When the rinsing and dehydrating operation is completed, a water supply operation is performed. That is, the drain valve 17 is closed and the water supply valve 12 is opened. And when the water level in the water tank 7 reaches a predetermined water level, the water supply valve 12 is closed. Thereafter, the drive mechanism 15 starts to rotate the rotating drum 9 according to the rinsing chart, and the agitation rinsing operation is executed.

  When such a rinsing dehydrating operation and a stirring rinsing operation are repeated a plurality of times and the rinsing process is completed, the process proceeds to the dehydrating process. In this dehydration step, first, the water supply valve 12 is closed. Then, the drain valve 17 is opened, and a drain operation for discharging the wash water in the water tank 7 to the outside is performed. Subsequently, a final dewatering operation is performed by rotating the rotary drum 9 on the dewatering chart. In the final dewatering operation, the washing water is discharged to the inner wall of the water tank 7 through the small holes 20 provided in the entire peripheral wall of the rotating drum 9 by centrifugal force due to the dewatering rotation. The washing water discharged in this way flows down the inner wall of the water tank 7 to the lower part of the water tank 7 and is discharged to the outside of the outer box 3 through the drainage duct 18 and the drainage hose 23.

  In the dehydration process, the rotational speed of the rotating drum 9 varies over a wide range from low speed to high speed. Therefore, the unbalance detection of the laundry in the rotating drum 9 uses the operation state at the low speed rotation of the dewatering process. And do it. Further, while rotating the rotating drum 9 at a low speed that allows the laundry to stick to the inner surface of the peripheral wall, unbalance detection is performed to detect the eccentric amount that is the magnitude of the eccentric load of the rotating drum 9, and the unbalance amount is If it is below the determination value, the rotary drum 9 is shifted to high speed rotation as it is. If it is determined that the rotating drum 9 is unbalanced, the rotation of the rotating drum 9 is stopped, and the process returns to the beginning of the dehydration process to detect imbalance. Also, when abnormal vibration is detected during the dehydration process, the rotation of the rotating drum 9 is stopped and the process returns to the top of the dehydration process again to detect unbalance, as in the case of unbalance detection.

  When the dehydration process is completed, the process proceeds to the drying process. In this drying step, the drive mechanism 15 drives the rotary drum 9 to rotate according to the drying chart. Then, when entering the drying step, the motor 24 rotationally drives the blower fan 25. At the same time, water is supplied to the dehumidifier 26 from a water supply device (not shown). By these operations, the air in the rotating drum 9 comes out of the rotating drum 9 from the small hole 20 and then passes through the dehumidifier 26, the suction port 31, the blower fan 25, the heater 27, and the blower duct 28 in order. It is returned into the rotary drum 9 from the outlet 29. As described above, by circulating the air, the air heated by the heater 27 and having a high temperature is supplied into the rotary drum 9, so that the laundry in the rotary drum 9 is gradually added by the high-temperature air. Dried. Furthermore, the moisture evaporated from the laundry during the drying process is contained in the air that exits from the inside of the rotary drum 9. The moisture in the air passes through the dehumidifier 26 and the dehumidifier 26 when passing through the dehumidifier 26. It cools with the supplied water and condenses. As a result, the air is dehumidified to become air with low humidity. The low-humidity air passes through the suction port 31, the blower fan 25, the heater 27, and the blower duct 28 in this order, and is returned from the blower outlet 29 into the rotary drum 9. By repeating such air circulation, the drying process is executed. During this drying process, the temperature of the air blown out from the outlet 29 into the rotary drum 9 can be detected by the temperature detector 1. Based on the output of the temperature detector 1, the control circuit 21 adjusts the output of the heater 27. Further, the humidity in the rotating drum 9 can be detected by a humidity sensor (not shown), and the temperature in the rotating drum 9 can be detected by a temperature sensor (not shown). When the outputs of the humidity sensor and the temperature sensor reach predetermined values, the drying process ends. In this drying process, the moisture condensed by the dehumidifier 26 is discharged to the outside through the drain duct 18, the drain valve 17 and the drain hose 23.

  As described above, based on the input from the operation unit 5, the washing process, the rinsing process, the dehydration process, and the drying process are performed continuously or independently according to the conditions set by the control circuit 21.

  During the drying process, air containing foreign matter such as yarn waste flows through the air duct 28, but the protrusion 2a of the foreign matter accumulation prevention unit 2 is located on the upstream side of the temperature detection unit 1. The flow direction of most of the air that is contained is changed by the protrusion 2 a of the foreign matter accumulation prevention unit 2.

  Therefore, most of the air containing the foreign matter does not collide with the temperature detection unit 1 from the front, and the foreign matter in the air can be prevented from accumulating on the temperature detection unit 1.

  In addition, since the height of the protruding portion 2 a of the foreign matter accumulation preventing unit 2 is lower than that of the temperature detecting unit 1, a part of the air traveling into the rotary drum 9 comes into contact with the temperature detecting unit 1.

  Therefore, the temperature of the air going into the rotary drum 9 can be accurately detected by the temperature detector 1. That is, it is possible to prevent the detection of the temperature detection unit 1 from being inaccurate.

  In addition, since the foreign matter accumulation prevention unit 2 is in contact with the temperature detection unit 1, the temperature of the air going into the rotary drum 9 is transmitted to the temperature detection unit 1 via the foreign matter accumulation prevention unit 2.

  Therefore, the temperature of the air going into the rotary drum 9 can be detected more accurately by the temperature detector 1.

  Further, since the foreign matter accumulation preventing unit 2 is made of a stainless steel plate, the heat of the air flowing into the rotary drum 9 can be efficiently transmitted to the temperature detecting unit 1.

  The foreign matter accumulation prevention unit 2 is disposed in a region soaked in the washing water. Since the foreign matter accumulation prevention unit 2 is formed of a rust-proof stainless steel plate, the foreign matter accumulation prevention unit 2 is prevented from being rusted. Can be prevented.

  Further, since the foreign matter accumulation preventing unit 2 can be attached to and detached from the temperature detection unit 1, the maintenance or replacement of the foreign matter accumulation prevention unit 2 can be easily performed by removing from the temperature detection unit 1.

  Further, in the foreign matter accumulation prevention unit 2 attached to the temperature detection unit 1, the upstream portion of the foreign matter accumulation prevention unit 2 from the temperature detection unit 1 has a width as it goes from the temperature detection unit 1 to the upstream side. Therefore, it is possible to prevent the air flow in the air duct 28 from being disturbed by the foreign matter accumulation prevention unit 2.

  Further, since the upstream end of the protruding portion 2a is rounded, foreign matter in the air flowing in the air duct 28 is not easily caught by the upstream end of the foreign matter accumulation preventing unit 2, so that foreign matter is accumulated. Accumulation of foreign matter on the prevention unit 2 can be suppressed.

  In addition, even if foreign matter adheres to the temperature detection unit 1 and the foreign matter accumulation prevention unit 2, the temperature detection unit 1 and the foreign matter accumulation prevention unit 2 are arranged so as to be immersed in the washing water in the water tank 7. Therefore, the foreign matter adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 2 can be washed away with washing water during the washing step and the rinsing step.

  Therefore, it is possible to prevent fine cotton dust from adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 2, and always maintain the temperature detection unit 1 and the foreign matter accumulation prevention unit 2 in a state free of cotton dust. be able to.

  In addition, if a foreign matter adheres to the temperature detection unit 1 and the foreign matter accumulation prevention unit 2, the blower 34 is turned on. Then, the blower fan 25 rotates, and the washing water in the fan case 30 is pushed out from the blower outlet 29 into the rotary drum 9 through the blower duct 28. As a result, foreign matter can be washed away from the temperature detection unit 1 and foreign matter accumulation prevention unit 2 with washing water.

  Further, when the foreign matter is washed away from the temperature detection unit 1 and the foreign matter accumulation prevention unit 2 with the washing water, the control circuit 21 controls the blower 34 so that the blower fan 25 repeats forward rotation and reverse rotation alternately. As a result, the foreign matter on the foreign matter accumulation prevention unit 2 is alternately subjected to the force to push out toward the outlet 29 and the force to return to the heater 27 side. The effect of removing can be enhanced.

  Therefore, even if there is a foreign object firmly attached to the temperature detection unit 1 and the foreign matter accumulation prevention unit 2, the foreign object can be washed away with washing water.

  The ON / OFF control program for the blower 34 is stored in advance in a CPU (not shown) in the control circuit 21, and the blower 34 is controlled based on this ON / OFF control program.

  In the first embodiment, the foreign matter accumulation preventing portion 2 is formed by bending a stainless steel plate, but the foreign matter accumulation preventing portion 2 may be formed by bending another metal plate. This metal plate preferably has rust prevention properties.

  In the said 1st Embodiment, although the air blower 34 which raises the water flow for washing away the foreign material with washing water from the temperature detection part 1 and the foreign material accumulation prevention part 2 was installed in the drum type washing dryer, A water flow generating unit that generates a water flow for washing foreign matter from the temperature detection unit 1 and the foreign matter accumulation prevention unit 2 with washing water may be installed in the drum type laundry dryer.

In the above embodiment, the temperature detection unit 1 and the foreign matter accumulation prevention unit 2 are provided on the downstream side of the heater 27.
The temperature detection unit 1 and the foreign matter accumulation prevention unit 2 may be provided on the downstream side of the heater 27, and the same components as the temperature detection unit 1 and the foreign matter accumulation prevention unit 2 may be provided on the upstream side of the heater 27.

(Second Embodiment)
FIG. 8 is a schematic plan view of the temperature detection unit 1 and the foreign matter accumulation prevention unit 42 of the drum type washer / dryer according to the second embodiment of the present invention. FIG. 9 is a schematic sectional view taken along line IX-IX in FIG. 8 and 9, the same components as those of the first embodiment shown in FIGS. 6 and 7 are denoted by the same reference numerals as those of the components in FIGS. .

  The drum type washing / drying machine is different from the first embodiment only in that the drum type washing / drying machine includes a blower duct 228 having one foreign matter accumulation prevention unit 42.

  As shown in FIGS. 8 and 9, the foreign matter accumulation prevention unit 42 is provided integrally with the air duct 228 so as to be located on the upstream side of the temperature detection unit 1. And the temperature detection part 1 and the foreign material deposition prevention part 42 are arrange | positioned in the area | region immersed in the wash water in the water tank 7. FIG. Further, the foreign matter accumulation preventing part 42 has a substantially cylindrical shape and protrudes from the inner wall surface of the air duct 228 toward the inner side. The central axis of the foreign matter accumulation prevention unit 2 is substantially parallel to the central axis of the temperature detection unit 1. Further, the outer diameter of the foreign matter accumulation prevention unit 42 is smaller than the outer diameter of the temperature detection unit 1. That is, the width of the foreign matter accumulation preventing unit 42 is smaller than the width of the temperature detecting unit 1.

  The air duct 228 guides the air heated by the heater 27 (see FIG. 2) into the rotating drum 9 during the drying process. A part of the air duct 228 serves as a foreign matter accumulation prevention unit 42.

  According to the drum-type washing / drying machine having the above-described configuration, air containing foreign matters such as yarn waste flows in the air duct 228 during the drying process, but the foreign matter accumulation prevention unit 42 is positioned upstream of the temperature detection unit 1. Therefore, the flow direction of the majority of the air including the foreign matter is changed by the foreign matter accumulation preventing unit 42.

  Therefore, most of the air containing the foreign matter does not collide with the temperature detection unit 1 from the front, and the foreign matter in the air can be prevented from accumulating on the temperature detection unit 1.

  In addition, since the outer diameter of the foreign matter accumulation prevention unit 42 is smaller than the outer diameter of the temperature detection unit 1, a part of the air traveling into the rotary drum 9 contacts the temperature detection unit 1.

  Therefore, the temperature of the air going into the rotary drum 9 can be accurately detected by the temperature detector 1. That is, it is possible to prevent the detection of the temperature detection unit 1 from being inaccurate.

  In addition, since the foreign matter accumulation preventing part 42 is formed of a part of the air duct 228, the work of attaching the foreign matter accumulation preventing part 42 to the air duct 228 is not required. It is possible to prevent the occurrence of a problem such that the position of the foreign matter accumulation prevention unit 42 is shifted or detached.

  In addition, since the foreign matter accumulation preventing portion 42 has a substantially cylindrical shape, foreign matters in the air flowing in the air duct 228 are not easily caught by the foreign matter accumulation preventing portion 42. Can be suppressed.

  Further, even if foreign matter adheres to the temperature detection unit 1 and the foreign matter accumulation prevention unit 42, the temperature detection unit 1 and the foreign matter accumulation prevention unit 42 are arranged so as to be immersed in the washing water in the water tank 7. Therefore, the foreign matter adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 42 can be washed away with washing water during the washing process and the rinsing process.

  Therefore, it is possible to prevent fine cotton dust from adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 42, and always maintain the temperature detection unit 1 and the foreign matter accumulation prevention unit 42 in a state free of cotton dust. be able to.

  In the second embodiment, the substantially columnar foreign matter accumulation prevention unit 42 is used. However, a substantially prismatic foreign matter accumulation prevention unit 42 may be used.

(Third embodiment)
FIG. 10 is a schematic plan view of the temperature detection unit 1 and the foreign matter accumulation prevention unit 52 of the drum type washer / dryer according to the third embodiment of the present invention. FIG. 11 is a schematic cross-sectional view taken along line XI-XI in FIG. 10 and 11, the same components as those in the first embodiment shown in FIGS. 6 and 7 are denoted by the same reference numerals as those in FIGS. 6 and 7, and description thereof is omitted. .

  The drum type washing / drying machine is different from the first embodiment only in that the drum type washing / drying machine includes an air duct 328 having three foreign matter accumulation prevention parts 52 having the same shape.

  As shown in FIGS. 10 and 11, the foreign matter accumulation prevention unit 52 is provided integrally with the air duct 328 and is located on the upstream side of the temperature detection unit 1. The temperature detection unit 1 and the three foreign matter accumulation prevention units 52 are arranged in a region of the water tank 7 that is immersed in the wash water. Each foreign matter accumulation preventing unit 52 has a substantially cylindrical shape and protrudes from the inner wall surface of the air duct 328 toward the inner side. The central axis of each foreign matter accumulation prevention unit 2 is substantially parallel to the central axis of the temperature detection unit 1. Further, the outer diameter of each foreign matter accumulation prevention unit 52 is smaller than the outer diameter of the temperature detection unit 1. That is, the width of each foreign matter accumulation prevention unit 52 is smaller than the width of the temperature detection unit 1.

  Further, when the three foreign matter accumulation prevention units 52 are viewed from the upstream side, it appears that one foreign matter accumulation prevention unit 52 is positioned between the other two foreign matter accumulation prevention units 52. The other two foreign matter accumulation preventing parts 52 are symmetrical with respect to a plane including the central axis of the one foreign matter accumulation preventing part 52 and the central axis of the other two foreign matter accumulation preventing parts 52. Is provided. The distance between the surface and the central axis of each of the other two foreign matter accumulation prevention units 52 is substantially equal to the diameter of the single foreign matter accumulation prevention unit 52.

  The air duct 328 guides the air heated by the heater 27 (see FIG. 2) into the rotating drum 9 during the drying process. A foreign matter accumulation prevention unit 52 is formed from a part of the air duct 328.

  According to the drum-type washing / drying machine having the above-described configuration, air containing foreign matters such as yarn waste flows in the blower duct 328 during the drying process, but the foreign matter accumulation prevention unit 52 is positioned upstream of the temperature detection unit 1. Therefore, the flow direction of most of the air containing foreign matter is changed by the foreign matter accumulation preventing unit 52.

  Therefore, most of the air containing the foreign matter does not collide with the temperature detection unit 1 from the front, and the foreign matter in the air can be prevented from accumulating on the temperature detection unit 1.

  In addition, since the number of the foreign matter accumulation prevention units 52 is three, it is possible to reliably prevent most of the air containing the foreign matter from colliding with the temperature detection unit 1 in a frontal collision.

  In addition, since the outer diameter of each of the foreign matter accumulation prevention units 52 is smaller than the outer diameter of the temperature detection unit 1, a part of the air going into the rotary drum 9 passes between the foreign matter accumulation prevention units 52 and the temperature. Contact the detector 1.

  Therefore, the temperature of the air going into the rotary drum 9 can be accurately detected by the temperature detector 1. That is, it is possible to prevent the detection of the temperature detection unit 1 from being inaccurate.

  In addition, since the foreign matter accumulation preventing unit 52 is formed of a part of the air duct 328, the work for attaching the foreign matter accumulation preventing unit 52 to the air duct 328 is not necessary. It is possible to prevent the occurrence of a problem such that the position of the foreign matter accumulation prevention unit 52 is shifted or detached.

  In addition, since the foreign matter accumulation prevention unit 52 has a substantially cylindrical shape, foreign matters in the air flowing in the air duct 328 are not easily caught by the foreign matter accumulation prevention unit 52, so that foreign matters accumulate on the foreign matter accumulation prevention unit 52. Can be suppressed.

  In addition, even if foreign matter adheres to the temperature detection unit 1 and the foreign matter accumulation prevention unit 52, the temperature detection unit 1 and the foreign matter accumulation prevention unit 52 are arranged so as to be immersed in the washing water in the water tank 7. Therefore, the foreign matter adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 52 can be washed away with washing water during the washing process and the rinsing process.

  Therefore, it is possible to prevent fine cotton dust from adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 52, and always maintain the temperature detection unit 1 and the foreign matter accumulation prevention unit 52 in a state free of cotton dust. be able to.

  In the third embodiment, three substantially cylindrical foreign matter accumulation preventing portions 52 are used, but three substantially prismatic foreign matter accumulation preventing portions may be used.

  In the third embodiment, the number of the substantially columnar foreign matter accumulation prevention units 52 is three, but may be two or four or more.

  In the third embodiment, the positional relationship between the foreign matter accumulation prevention units 52 is the positional relationship of FIG. 10. However, if most of the air containing the foreign matter does not collide with the temperature detection unit 1 from the front. The positional relationship may be other than that shown in FIG.

(Fourth embodiment)
FIG. 12 is a schematic plan view of the temperature detection unit 1 and the foreign matter accumulation prevention unit 62 of the drum type washer / dryer according to the fourth embodiment of the present invention. FIG. 13 is a schematic sectional view taken along line XIII-XIII in FIG. 12 and 13, the same components as those of the first embodiment shown in FIGS. 6 and 7 are denoted by the same reference numerals as those of the components in FIGS. .

  The drum-type washing / drying machine is different from the first embodiment only in that the drum-type washing / drying machine includes an air duct 428 having one foreign matter accumulation prevention unit 62.

  As shown in FIGS. 12 and 13, the foreign matter accumulation prevention unit 62 is provided integrally with the air duct 428 so as to be located on the upstream side of the temperature detection unit 1. And the temperature detection part 1 and the foreign material deposition prevention part 62 are arrange | positioned in the area | region immersed in the wash water in the water tank 7. FIG. The downstream end of the foreign matter accumulation preventing unit 62 is formed along the outer peripheral surface of the temperature detecting unit 1 and is in close contact with the outer peripheral surface without any gap. On the other hand, the upstream end surface of the foreign matter accumulation preventing unit 62 has an arc shape in plan view. Such a foreign matter accumulation prevention unit 52 protrudes from the inner wall surface of the air duct 428 toward the inner side. The protruding direction of the foreign matter accumulation prevention unit 62 is substantially parallel to the central axis of the temperature detection unit 1. In addition, the vertical width of the foreign matter accumulation prevention unit 62 in FIG. 12 is smaller than the outer diameter of the temperature detection unit 1.

  The air duct 428 guides the air heated by the heater 27 (see FIG. 2) into the rotating drum 9 during the drying process. A foreign matter accumulation preventing unit 62 is formed from a part of the air duct 428.

  According to the drum type washing / drying machine having the above-described configuration, air containing foreign matters such as yarn waste flows in the blower duct 428 during the drying process, but the foreign matter accumulation prevention unit 62 is positioned upstream of the temperature detection unit 1. Therefore, the flow direction of the majority of the air including the foreign matter is changed by the foreign matter accumulation preventing unit 62.

  Therefore, most of the air containing the foreign matter does not collide with the temperature detection unit 1 from the front, and the foreign matter in the air can be prevented from accumulating on the temperature detection unit 1.

  Further, since the width in the vertical direction in FIG. 12 of the foreign matter accumulation prevention unit 62 is smaller than the outer diameter of the temperature detection unit 1, a part of the air that goes into the rotary drum 9 contacts the temperature detection unit 1. .

  Therefore, the temperature of the air going into the rotary drum 9 can be accurately detected by the temperature detector 1. That is, it is possible to prevent the detection of the temperature detection unit 1 from being inaccurate.

  Further, since the foreign matter accumulation prevention unit 62 is formed of a part of the air duct 428, the work for attaching the foreign matter accumulation prevention unit 62 to the air duct 428 is not necessary, and the temperature detection unit 1 can be used even if used for many years. It is possible to prevent the occurrence of a problem such that the position of the foreign matter accumulation preventing unit 62 with respect to the position is shifted or detached.

  In addition, since the upstream end surface of the foreign matter accumulation preventing portion 62 has an arc shape in plan view, foreign matter in the air entering the rotary drum 9 is caught by the upstream end portion of the foreign matter accumulation preventing portion 2. Since it is difficult, it can suppress that a foreign material accumulates on the foreign material deposition prevention part 62. FIG.

  In addition, even if foreign matter adheres to the temperature detection unit 1 and the foreign matter accumulation prevention unit 62, the temperature detection unit 1 and the foreign matter accumulation prevention unit 62 are disposed so as to be immersed in the washing water in the water tank 7. Therefore, the foreign matter adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 62 can be washed away with washing water during the washing process and the rinsing process.

  Therefore, it is possible to prevent fine cotton dust from adhering to the temperature detection unit 1 and the foreign matter accumulation prevention unit 62, and always maintain the temperature detection unit 1 and the foreign matter accumulation prevention unit 62 in a state free of cotton dust. be able to.

  Further, since the downstream end of the foreign matter accumulation prevention unit 62 is in close contact with the outer peripheral surface of the temperature detection unit 1 without any gap, foreign matter can enter between the foreign matter accumulation prevention unit 62 and the temperature detection unit 1. Can be prevented.

  In the fourth embodiment, the end surface on the upstream side of the foreign matter accumulation prevention unit 62 has an arc shape in plan view, but may have a shape other than the arc shape in plan view, for example, a V hour shape.

(Fifth embodiment)
FIG. 14 is a schematic plan view of the temperature detection unit 71 and the foreign matter accumulation prevention unit 72 of the drum type washer / dryer according to the fifth embodiment of the present invention. FIG. 15 is a schematic cross-sectional view taken along line XV-XV in FIG. 14 and 15, the same components as those in the first embodiment shown in FIGS. 6 and 7 are denoted by the same reference numerals as those in FIGS. 6 and 7, and the description thereof is omitted. .

  The drum-type washing / drying machine is different from the first embodiment only in that the drum-type washing / drying machine includes a temperature detection unit 71 in which a foreign matter accumulation prevention unit 72 is integrally provided.

  As shown in FIGS. 14 and 15, the foreign matter accumulation prevention unit 72 is located on the upstream side of the substantially cylindrical temperature detection unit 1. In addition, the foreign matter accumulation prevention unit 72 has a substantially triangular shape in plan view, and the width becomes narrower toward the upstream side. And the temperature detection part 71 and the foreign material deposition prevention part 72 are arrange | positioned in the area | region immersed in the wash water in the water tank 7. FIG. Further, the width in the vertical direction in FIG. 14 at the downstream end of the foreign matter accumulation prevention unit 72 is smaller than the outer diameter of the temperature detection unit 71.

  According to the drum type washing / drying machine having the above-described configuration, air containing foreign matters such as yarn waste flows in the air duct 28 during the drying process, but the foreign matter accumulation preventing unit 72 is positioned upstream of the temperature detecting unit 71. Therefore, the flow direction of most of the air containing foreign matter is changed by the foreign matter accumulation preventing unit 72.

  Therefore, most of the air containing the foreign matter does not collide with the temperature detection unit 71 in the front, and foreign matter in the air can be prevented from accumulating on the temperature detection unit 71.

  Further, since the width in the vertical direction in FIG. 14 at the downstream end of the foreign matter accumulation prevention unit 72 is smaller than the outer diameter of the temperature detection unit 71, a part of the air in the air duct 28 is heated. Contact the detection unit 71.

  Therefore, the temperature of the air going into the rotary drum 9 can be accurately detected by the temperature detector 71. That is, it is possible to prevent the temperature detection unit 71 from detecting inaccurately.

  Moreover, since the width of the foreign matter accumulation prevention unit 72 becomes narrower toward the upstream side, the flow of air in the air duct 28 can be prevented from being disturbed by the foreign matter accumulation prevention unit 2.

  In addition, since the foreign matter accumulation prevention unit 72 is integrated with the temperature detection unit 71, there is a problem that the foreign matter accumulation prevention unit 72 is displaced or detached from the temperature detection unit 71 even when used for many years. Can be prevented.

  In addition, since the foreign matter accumulation prevention unit 72 is integrated with the temperature detection unit 71, the attachment operation of the foreign matter accumulation prevention unit 72 is completed when the temperature detection unit 71 is attached to the air duct 28. Therefore, the work of attaching the foreign matter accumulation prevention unit 72 can be omitted.

  Further, even if foreign matter adheres to the temperature detection unit 71 and the foreign matter accumulation prevention unit 72, the temperature detection unit 71 and the foreign matter accumulation prevention unit 72 are disposed so as to be immersed in the washing water in the water tank 7. Therefore, the foreign matter adhering to the temperature detection unit 71 and the foreign matter accumulation prevention unit 72 can be washed away with washing water during the washing step and the rinsing step.

  Therefore, it is possible to prevent fine cotton dust from adhering to the temperature detection unit 71 and the foreign matter accumulation prevention unit 72, and the temperature detection unit 71 and the foreign matter accumulation prevention unit 72 are always maintained in a state free of cotton dust. be able to.

(Sixth embodiment)
FIG. 16 is a schematic plan view of the temperature detection unit 81 and the foreign matter accumulation prevention unit 82 of the drum type washer / dryer according to the sixth embodiment of the present invention. FIG. 17 is a schematic sectional view taken along line XVII-XVII in FIG. 16 and 17, the same components as those of the first embodiment shown in FIGS. 6 and 7 are denoted by the same reference numerals as those of the components in FIGS. .

  The drum type washing and drying machine is only provided with the temperature detection unit 81 integrally provided with the foreign matter accumulation prevention unit 82 and the air duct 528 to which the temperature detection unit 81 is attached. Different from form.

  As shown in FIGS. 16 and 17, the foreign matter accumulation prevention unit 82 is located on the upstream side of the substantially cylindrical temperature detection unit 1. Further, the upstream end face of the foreign matter accumulation preventing portion 82 has an arc shape in plan view. And the temperature detection part 81 and the foreign material deposition prevention part 82 are arrange | positioned in the area | region immersed in the wash water in the water tank 7. FIG. Further, the vertical width of the foreign matter accumulation preventing unit 82 in FIG. 16 is smaller than the outer diameter of the temperature detecting unit 81.

  According to the drum type washing / drying machine having the above-described configuration, air containing foreign matters such as yarn waste flows in the blower duct 528 during the drying process, but the foreign matter accumulation prevention unit 82 is positioned upstream of the temperature detection unit 81. Therefore, the flow direction of the majority of the air including the foreign matter is changed by the foreign matter accumulation preventing unit 82.

  Therefore, most of the air containing the foreign matter does not collide with the temperature detection unit 81 in the front, and foreign matter in the air can be prevented from accumulating on the temperature detection unit 81.

  Further, since the width in the vertical direction in FIG. 16 of the foreign matter accumulation preventing unit 82 is smaller than the outer diameter of the temperature detecting unit 81, a part of the air in the air duct 528 contacts the temperature detecting unit 81. .

  Therefore, the temperature of the air going into the rotary drum 9 can be accurately detected by the temperature detector 81. That is, it is possible to prevent the detection of the temperature detection unit 81 from becoming inaccurate.

  Further, since the upstream end face of the foreign matter accumulation preventing portion 82 has an arc shape in plan view, foreign matter in the air entering the rotary drum 9 is caught on the upstream end portion of the foreign matter accumulation preventing portion 2. Since it is difficult, it can suppress that a foreign material accumulates on the foreign material deposition prevention part 82. FIG.

  In addition, since the foreign matter accumulation prevention unit 82 is integrated with the temperature detection unit 81, there is a problem that the foreign matter accumulation prevention unit 82 is displaced or detached from the temperature detection unit 81 even when used for many years. Can be prevented.

  In addition, since the foreign matter accumulation prevention unit 82 is integrated with the temperature detection unit 81, the attachment operation of the foreign matter accumulation prevention unit 82 is completed when the temperature detection unit 81 is attached to the air duct 528. Therefore, the work for attaching the foreign matter accumulation prevention unit 82 can be omitted.

  In addition, even if foreign matter adheres to the temperature detection unit 81 and the foreign matter accumulation prevention unit 82, the temperature detection unit 81 and the foreign matter accumulation prevention unit 82 are disposed so as to be immersed in the washing water in the water tank 7. Therefore, the foreign matter adhering to the temperature detection unit 81 and the foreign matter accumulation prevention unit 82 can be washed away with washing water during the washing process and the rinsing process.

  Accordingly, it is possible to prevent fine cotton dust from adhering to the temperature detection unit 81 and the foreign matter accumulation prevention unit 82, and the temperature detection unit 81 and the foreign matter accumulation prevention unit 82 are always maintained in a state free of cotton dust. be able to.

  As described in the first embodiment, the present invention can be applied to a “drum type laundry dryer” in which a drum for storing laundry is inclined and washing and rinsing are performed by rotating the drum. It is also applicable to a “vertical laundry dryer” that includes a rotating tub for storing the water and a stirrer rotatably provided at the bottom of the rotating tub and performs washing and rinsing by rotation of the stirrer.

  In addition, the present invention can be applied to, for example, the dryer of FIG. 18 that does not have a washing function. The dryer includes an outer box 101, a rotating drum 102, a heater 103, a blower 104, and a thermistor 105. Moreover, although not shown in figure, the said dryer is provided with the control part which performs the drying operation which dries laundry based on the detection result of the thermistor 105. FIG. The laundry is an example of an object to be dried, the rotating drum 102 is an example of a storage tub, the heater 103 is an example of a heating unit, the blower 104 is an example of a blowing unit, and the thermistor 105 is an example of a temperature detection unit.

  The outer box 101 has a plurality of vent holes 106 at the rear. Air in the outer box 101 comes out of the machine from the plurality of vent holes 106, and air outside the machine enters the outer box 101 from the plurality of vent holes 106.

  The rotating drum 102 is supported inside the outer box 101 so as to be able to rotate in both forward and reverse directions around a horizontal axis (drum shaft) 107. The rotating drum 102 receives the rotational driving force of the drum driving motor 109 via the drum belt 108. That is, the drum driving motor 109 rotates the rotating drum 102 via the drum belt 108.

  The heater 103 is disposed in one end of the air duct 110. The other end of the air duct 110 is located and opened at the rear part in the outer box 101, and the air in the rear part in the outer box 101 flows into the heater 103.

  The blower 104 includes a blower fan 111 and a fan driving motor 113 that drives the blower fan 111 to rotate independently of the rotary drum 102 via a fan belt 112.

  The thermistor 105 is disposed on the upstream side of the heater 103 and detects the temperature of the air in the air duct 110.

  With the rotation of the blower fan 111, the dryer configured as described above enters the rotary drum 102 from the blower outlet 114 through the blower duct 110, as indicated by the black arrow A in FIG. It circulates along the route of returning to the blower fan 111 through the exhaust port 116. At this time, air heated by the heater 103 blows out from the air outlet 114, and this air heats the laundry in the rotating drum 102 and evaporates the moisture in the laundry.

  On the rear surface of the blower fan 111, as shown by a white arrow B, cold air is taken in from the outside to cool the hot air passing in the direction of the black arrow C and perform dehumidification. Condensed water generated by dehumidification by cooling with warm air is discharged out of the machine from a drain port 117 provided at the lower part of the air duct 110.

  Even in such a dryer, there is a problem that foreign matter adheres to the thermistor 105. Therefore, if the foreign matter accumulation prevention unit as described in the first to sixth embodiments is provided on the upstream side of the thermistor 105, the above problem can be solved.

  Further, the present invention can be applied to any dryer other than a dryer that dries laundry, as long as it is a dryer that dries an object to be dried with heated air.

FIG. 1 is a schematic perspective view of a drum type washing / drying machine according to a first embodiment of the present invention. FIG. 2 is a schematic sectional view taken along the line II-II in FIG. FIG. 3 is a schematic rear view of the water tank of the drum type washing and drying machine of the first embodiment. 4 is a schematic cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a schematic plan view of the foreign matter accumulation prevention unit in the removed state according to the first embodiment. FIG. 6 is a schematic plan view of the foreign matter accumulation prevention unit in the attached state according to the first embodiment. 7 is a schematic sectional view taken along line VII-VII in FIG. FIG. 8 is a schematic plan view of the temperature detection unit and the foreign matter accumulation prevention unit of the drum type washing and drying machine according to the second embodiment of the present invention. 9 is a schematic sectional view taken along line IX-IX in FIG. FIG. 10 is a schematic plan view of the temperature detection unit and the foreign matter accumulation prevention unit of the drum type washing / drying machine according to the third embodiment of the present invention. 11 is a schematic cross-sectional view taken along line XI-XI in FIG. FIG. 12 is a schematic plan view of a temperature detection unit and a foreign matter accumulation prevention unit of a drum type washer / dryer according to a fourth embodiment of the present invention. 13 is a schematic sectional view taken along line XIII-XIII in FIG. FIG. 14 is a schematic plan view of a temperature detection unit and a foreign matter accumulation prevention unit of a drum type washing / drying machine according to a fifth embodiment of the present invention. 15 is a schematic sectional view taken along line XV-XV in FIG. FIG. 16 is a schematic plan view of a temperature detection unit and a foreign matter accumulation prevention unit of a drum type washer / dryer according to a sixth embodiment of the present invention. 17 is a schematic cross-sectional view taken along line XVII-XVII in FIG. FIG. 18 is a schematic cross-sectional view of a dryer according to an embodiment of the present invention.

Explanation of symbols

1, 71, 81 Temperature detection unit 2, 42, 52, 62, 72, 82 Foreign matter accumulation prevention unit 3, 101 Outer box 4 Door 5 Operation unit 7 Water tank 8 Anti-vibration damper 9, 102 Rotating drum 10 Door packing 11 Balancer 12 Water supply valve for washing 13 Detergent case 14 Water supply port 15 Drive mechanism 16 Baffle 17 Drain valve 18 Drain duct 19 Lint filter 20 Small hole 21 Control circuit 22 Drum opening 23 Drain hose 24 Motor 25 Blower fan 26 Dehumidifier 27, 103 Heater 28,110,228,328,428,528 Air duct 29 Air outlet 34,104 Air blower 105 Thermistor

Claims (16)

An outer box,
A storage tank that is disposed in the outer box and stores an object to be dried;
A heating unit for heating the air supplied into the storage tank in order to dry the object to be dried;
A blowing section for flowing the air into the storage tank;
A temperature detection unit that is provided in a flow path through which the air flows and detects the temperature of the air;
Based on the detection result of the temperature detection unit, a control unit that executes a drying operation for drying the object to be dried,
At least a part is provided on the upstream side of the temperature detection unit, and includes a foreign matter accumulation prevention unit that prevents foreign matter from accumulating on the temperature detection unit,
In the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit is lower in height than the temperature detection unit or narrower than the temperature detection unit. Drying machine. The dryer according to claim 1,
The dryer, wherein the foreign matter accumulation prevention unit is in contact with the temperature detection unit. The dryer according to claim 2,
The said foreign material accumulation prevention part consists of the metal which has rust prevention property, The dryer characterized by the above-mentioned. In the dryer according to any one of claims 1 to 3,
The dryer according to claim 1, wherein the foreign matter accumulation prevention unit is detachable from the temperature detection unit. In the dryer according to any one of claims 1 to 4,
The dryer characterized in that the width of the upstream portion of the foreign matter accumulation prevention unit from the temperature detection unit becomes narrower from the temperature detection unit to the upstream side. In the dryer as described in any one of Claim 1 to 5,
A dryer characterized by a rounded end on the upstream side of the foreign matter accumulation prevention unit. An outer box,
A water tank disposed in the outer box;
A rotating tub disposed in the water tub so as to be freely rotatable;
A heating unit for heating the air supplied into the rotating tub to dry the laundry,
A blowing section for flowing the air into the rotating tank;
A temperature detection unit that is provided in a flow path through which the air flows and detects the temperature of the air;
Based on the detection result of the temperature detection unit, a control unit that performs a drying operation for drying the laundry,
At least a part is provided on the upstream side of the temperature detection unit, and includes a foreign matter accumulation prevention unit that prevents foreign matter from accumulating on the temperature detection unit,
In the foreign matter accumulation prevention unit, the portion upstream of the temperature detection unit is lower in height than the temperature detection unit or narrower than the temperature detection unit. Washing and drying machine. In the washing and drying machine according to claim 7,
The washing / drying machine, wherein the foreign matter accumulation prevention unit is in contact with the temperature detection unit. The washing / drying machine according to claim 8,
The foreign matter accumulation preventing part is made of a metal having rust prevention properties. In the washing and drying machine according to any one of claims 7 to 9,
The washing / drying machine, wherein the foreign matter accumulation prevention unit is detachable from the temperature detection unit. In the washing and drying machine according to any one of claims 7 to 10,
The washing / drying machine characterized in that the width of the upstream portion of the foreign matter accumulation prevention unit from the temperature detection unit becomes narrower from the temperature detection unit to the upstream side. In the washing and drying machine according to any one of claims 7 to 11,
A washer / dryer characterized in that a round is attached to an upstream end of the foreign matter accumulation prevention unit. In the washing and drying machine according to any one of claims 7 to 12,
The washing / drying machine, wherein the foreign matter accumulation prevention unit is disposed so as to be immersed in washing water supplied into the water tank. The washing / drying machine according to claim 13,
The air blower is disposed so as to be immersed in the wash water supplied into the water tank, and generates a water flow in the wash water. The washing / drying machine according to claim 13,
A washing / drying machine comprising: a water flow generating unit that generates a water flow in the washing water supplied into the water tank. The washing / drying machine according to claim 14 or 15,
The said control part performs the control for the flow direction of the said water flow to switch from a normal direction to a reverse direction, The washing-drying machine characterized by the above-mentioned.

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