CN114846195A - Drying machine - Google Patents
Drying machine Download PDFInfo
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- CN114846195A CN114846195A CN202080087582.5A CN202080087582A CN114846195A CN 114846195 A CN114846195 A CN 114846195A CN 202080087582 A CN202080087582 A CN 202080087582A CN 114846195 A CN114846195 A CN 114846195A
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- Prior art keywords
- foreign matter
- drum
- air
- drying chamber
- wire
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
A dryer is provided with: a drying chamber (3) disposed in the box body (2); a drum (4) which is disposed in the drying chamber (3) and has an inner peripheral surface in which a plurality of air holes (4a) are formed; the air suction path (32) is used for feeding heated air into the drying chamber (3); an air exhaust passage (35) which is communicated with an air duct hole (34) formed at the lower part of the drying chamber (3) and used for exhausting air in the drying chamber (3); foreign matter detection means (50, 150, 250) capable of detecting foreign matter protruding outward from the air vent (4a) of the drum (4); and a control unit (60) that controls the motor (11) that rotationally drives the drum (4), wherein the control unit (60) controls the motor (11) to stop the rotation of the drum (4) when the foreign matter is detected by the foreign matter detection unit (50, 150, 250). The drum (4) can be prevented from being rotated in a state where foreign matter protrudes outward from the ventilation hole (4a) of the drum (4), and the end wall portion of the air passage hole (34) or the drum (4) can be prevented from being damaged by the foreign matter.
Description
The present invention relates to a dryer including a drum having an inner circumferential surface formed with a plurality of air holes.
The dryer of patent document 1 has a drying chamber formed inside a casing, and a drum supported by a main shaft arm is disposed inside the drying chamber. The drum is provided with a large opening at a front end surface thereof as a laundry inlet through which laundry to be dried is introduced into the drum. The drum has a plurality of ventilation holes formed in its circumferential surface.
An air outlet is disposed on the upper surface of the rear part of the drying chamber, and an air outlet is disposed on the lower surface of the front part of the drying chamber. Therefore, heated air is supplied from the air outlet to the drying chamber, and the heated air passes through the inside of the drum that is rotationally driven in the drying chamber, and is then discharged from the air outlet to the outside of the machine.
There is a possibility that foreign matter such as nails and metal parts may be mixed into laundry to be dried, which is introduced into the drum through the laundry inlet. In this case, if the drum is rotated in a state where foreign matter such as nails or metal parts protrudes outward from the ventilation hole of the drum, the foreign matter collides with a wall portion of the discharge port end portion formed on the lower surface of the drying chamber, and the wall portion of the discharge port end portion is damaged. Further, when a foreign object protruding outward from the ventilation hole of the drum collides with the wall portion of the end portion of the discharge port, the inner circumferential portion of the ventilation hole of the drum may be deformed so as to protrude inward of the drum due to the collision. In this case, the laundry in the drum may be damaged by the portion protruding inward of the foreign matter.
Documents of the prior art
Patent literature
Patent document 1: japanese patent laid-open No. 2008-200276
Disclosure of Invention
Problems to be solved by the invention
Accordingly, an object of the present invention is to provide a dryer which can prevent a drying chamber or a drum from being damaged by foreign substances when the drum is rotated in a state in which the foreign substances are protruded to the outside from ventilation holes of the drum.
Means for solving the problems
That is, the dryer of the present invention includes: a drying chamber arranged in the box body; a drum disposed in the drying chamber and having an inner circumferential surface on which a plurality of vent holes are formed; the air suction path is used for feeding heated air into the drying chamber; the air exhaust path is communicated with an air duct hole formed at the lower part of the drying chamber and is used for exhausting air in the drying chamber; a foreign matter detection unit capable of detecting foreign matters protruding outward from the ventilation holes of the drum; and a control unit that controls a motor that rotationally drives the drum, the control unit controlling the motor to stop rotation of the drum when the foreign matter is detected by the foreign matter detection unit.
In the dryer of the present invention, it is preferable that the foreign matter detection unit is capable of detecting the foreign matter protruding into the air passage hole.
In the dryer of the present invention, it is preferable that the foreign matter detection means controls the motor so that the drum alternately repeats rotation in a predetermined direction and rotation in a reverse predetermined direction, and the foreign matter detection means is capable of detecting the foreign matter on a downstream side in the predetermined direction from a center portion of the air passage hole and on the reverse predetermined direction from the center portion of the air passage hole.
In the dryer of the present invention, it is preferable that the foreign matter detection unit includes a wire and a movement detection portion that detects movement of the wire, the wire including: a first portion that is straightened along the rotation axis of the drum on a downstream side in the predetermined direction from a central portion of the duct hole; and a second portion that is straightened along the rotation axis of the drum on the downstream side of the center portion of the duct hole in the anti-predetermined direction.
Effects of the invention
In the dryer of the present invention, since the rotation of the drum is stopped when the foreign matter protruding from the ventilation hole of the drum is detected, the drum can be prevented from rotating in a state where the foreign matter protrudes and the end wall portion of the air passage hole or the drum can be prevented from being damaged by the foreign matter.
In the dryer of the present invention, since the foreign matter protruding from the ventilation hole of the drum to the outside in the air passage hole is detected, the foreign matter colliding with the end wall portion of the air passage hole can be detected when the drum continues to rotate in a state where the foreign matter protrudes.
In the dryer of the present invention, since the foreign matter can be detected on the downstream side of the center portion of the air passage hole in the predetermined direction when the drum is rotated in the predetermined direction and the foreign matter can be detected on the downstream side of the center portion of the air passage hole in the predetermined direction when the drum is rotated in the reverse direction, the foreign matter near the end wall portion of the air passage hole can be detected even when the drum is rotated in any direction in a state where the foreign matter protrudes. Therefore, the foreign matter can be suppressed from colliding with the end wall portion of the air passage hole when the foreign matter is not detected by the foreign matter detection unit.
In the dryer of the present invention, since the movement of the wires straightened respectively at the two end portions of the air passage hole can be detected by one movement detection unit, the manufacturing cost can be reduced as compared with the case where the movement detection unit is disposed for both the wires straightened respectively at the two end portions of the air passage hole.
Fig. 1 is a front longitudinal sectional view of a dryer 1 according to an embodiment of the present invention.
Fig. 2 is a side elevation longitudinal sectional view of dryer 1 of fig. 1 at a line a-a.
Fig. 3 is a diagram illustrating the structure of the foreign object detection unit 50.
Fig. 4 (a) shows a state in which the foreign matter protruding outward from the ventilation hole 4a of the drum 4 is caught by the wire 51, and fig. 4 (b) shows a state in which the foreign matter protruding outward from the ventilation hole 4a of the drum 4 pulls the wire 51.
Fig. 5 is a control block diagram of dryer 1 of the present embodiment.
Fig. 6 is a diagram illustrating the structure of the foreign object detection unit 150.
Fig. 7 is a diagram illustrating the structure of the foreign object detection unit 250.
Fig. 8 is a diagram illustrating a modification of the foreign object detection unit 50.
Description of the reference numerals
1: a dryer; 2: a box body; 3: a drying chamber; 4: a drum; 4 a: a vent hole; 11: a motor; 32: a gas suction path; 34: an air duct hole; 35: an air exhaust path; 50: a foreign matter detection unit (foreign matter detection means); 51: a metal wire; 56: a wire switch; 51 a: a first portion of wire; 51 b: a second portion of wire; 60: a control unit (control means); 150: a foreign matter detection unit (foreign matter detection means); 250: a foreign matter detection unit (foreign matter detection means).
Hereinafter, a dryer 1 according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a front longitudinal sectional view of a dryer 1 according to an embodiment of the present invention, and fig. 2 is a side longitudinal sectional view of the dryer 1 of fig. 1 at a line a-a.
The dryer 1 of the present embodiment is a tumble dryer having a cabinet 2 of a substantially rectangular parallelepiped box shape. A substantially cylindrical drying chamber 3 having a substantially cylindrical inner peripheral surface is disposed inside the casing 2, and a drum 4 having a substantially cylindrical inner peripheral surface for accommodating laundry is axially supported by a main shaft 5 extending in the front-rear direction inside the drying chamber 3.
The drum 4 is provided with a laundry inlet 6 at a front end surface thereof, and laundry to be dried is introduced into the drum 4 through the laundry inlet 6 in a state where the door 2a of the cabinet 2 is opened. Further, a plurality of ventilation holes 4a are formed in the circumferential surface of the drum 4.
The main shaft 5 is rotatably supported by a bearing 5a attached to the back surface wall of the drying chamber 3, and a pulley 10 is attached to the front end of the main shaft 5 projecting rearward. The rotary driving force of a drum motor 11 as a driving source provided behind the drying chamber 3 is transmitted to the pulley 10 via a motor pulley 12 and a timing belt 16, whereby the drum 4 is rotationally driven around the main shaft 5.
An air outlet 31 is provided in the upper rear surface of the drying chamber 3, and an air intake passage 32 having an air inlet 32a opened rearward is disposed in the upper portion of the drying chamber 3. A heating source 33 for heating the air taken in from the air inlet 32a is provided in the air intake path 32. In the case of a dryer for commercial use, the heating source 33 is generally a steam radiator through which high-temperature steam flows, but the heating method is not limited thereto, and an electric heater, a gas heater using city gas or LP gas, or the like may be used.
Therefore, when the fan 37 is driven to rotate by the fan motor 37a, the outside air is sucked into the air intake path 32 from the air intake port 32a, and an air flow is formed which is discharged to the outside of the machine from the air discharge port 35a through the air discharge port 31, the drying chamber 3, the air passage hole 34, and the air discharge path 35. At this time, when the heat source 33 is operated, the air supplied from the air outlet 31 into the drying chamber 3 becomes high-temperature heated air.
As described above, the substantially rectangular air passage hole 34 is formed in the lower portion of the drying chamber 3 in the casing 2. A foreign matter detection unit 50 capable of detecting foreign matter protruding outward from the ventilation hole 4a of the drum 4 is disposed on the outer peripheral surface of the drying chamber 3. Fig. 3 is a diagram illustrating the structure of the foreign object detection unit 50.
The foreign object detection unit 50 includes: a metal wire 51; a fixing portion 52 to which one end portion of the wire 51 is attached; a first rotating roller 53, a second rotating roller 54, and a third rotating roller 55 around the outer peripheral surface of which the wire 51 is wound; and a wire switch 56 to which the other end of the wire 51 is attached.
The fixing portion 52 is disposed on the right side of the front side end portion of the air duct hole 34. The first rotating roller 53 is disposed on the right side of the rear side end of the air duct hole 34, the second rotating roller 54 is disposed on the left side of the rear side end of the air duct hole 34, and the third rotating roller 55 is disposed on the left side of the front side end of the air duct hole 34. The wire switch 56 is disposed on the left side of the third rotating roller 55.
The wire 51 is attached at one end thereof to the fixing portion 52, and then is straightened from the front side to the back side in the vicinity of the wall portion of the right end portion of the air passage hole 34. After that, the wire 51 is straightened toward the second rotating roller 54 on the back side of the air passage hole 34 after passing around the outer peripheral surface of the first rotating roller 53. The wire 51 wound around the outer peripheral surface of the second rotating roller 54 is straightened from the back side to the front side in the vicinity of the wall portion of the left end portion of the air duct hole 34. After that, the wire 51 is wound around the outer peripheral surface of the third rotating roller 55, and then the other end portion of the wire 51 is connected to the wire switch 56.
The wire 51 has: a first portion 51a that is straightened along the rotation axis of the drum 4 on the clockwise rotation direction downstream side of the center portion of the air passage hole 34 located below the rotation axis of the drum 4; and a second portion 51b that is straightened along the rotation axis of the drum 4 on the counterclockwise rotation direction downstream side of the central portion of the air passage hole 34. That is, the wire 51 has a first portion 51a disposed on the left side of the central portion (the central portion in the rotational direction of the drum 4) of the air passage hole 34 and a second portion 51b disposed on the right side of the central portion of the air passage hole 34.
The first portion 51a of the wire 51 that is straightened from the rear side to the front side near the wall of the left end of the duct hole 34 is arranged to be offset inward from the wall of the left end of the duct hole 34. Similarly, the second portion 51b of the wire 51 that is straightened from the front side to the back side in the vicinity of the wall portion of the right end portion of the duct hole 34 is arranged so as to be offset inward from the wall portion of the right end portion of the duct hole 34.
The wire switch 56 of the foreign object detection unit 50 is turned off when a force is not applied to the wire 51, that is, when a foreign object protruding outward from the air vent 4a of the drum 4 is not caught by the wire 51, and is turned on when the foreign object is caught by the wire 51 and the other end portion of the wire 51 is pulled. Therefore, when a force acts on the wire 51 and the movement of the wire 51 is detected, the wire switch 56 is switched to the on state.
Fig. 4 (a) shows a state in which the foreign matter protruding outward from the ventilation hole 4a of the drum 4 is caught by the wire 51, and fig. 4 (b) shows a state in which the foreign matter protruding outward from the ventilation hole 4a of the drum 4 pulls the wire 51. In fig. 4 (a) and 4 (b), foreign matters protruding outward from the ventilation holes 4a of the drum 4 are illustrated, and the drum 4 is not illustrated.
When foreign matter such as nails or metal parts is mixed in laundry to be dried which is introduced into the drum 4 and the drum 4 rotates clockwise, the foreign matter protrudes outward from the air vent 4a located at the lower end portion of the drum 4, and when the foreign matter is disposed in the air passage hole 34 of the drying chamber 3, the foreign matter approaches the wall portion at the left end portion of the air passage hole 34 when the drum 4 further rotates clockwise.
Then, as shown in fig. 4 (a), the foreign matter protruding outward from the ventilation hole 4a of the drum 4 catches on the first portion 51a of the wire 51 that is straightened near the wall portion of the left end portion of the air duct hole 34. In this state, when the drum 4 further rotates clockwise, the first portion 51a of the wire 51 is pulled by the foreign matter toward the wall portion of the left end portion of the air passage hole 34 as shown in fig. 4 (b). Then, the wire switch 56 is turned on, and a state in which foreign matter protrudes outward from the ventilation hole 4a of the drum 4 is detected.
Similarly, when the drum 4 rotates counterclockwise, the foreign matter protrudes outward from the air vent 4a located at the lower end of the drum 4, and when the foreign matter is disposed in the air duct hole 34 of the drying chamber 3, the foreign matter approaches the wall portion of the right end portion of the air duct hole 34 when the drum 4 further rotates counterclockwise.
Then, the foreign matter protruding outward from the ventilation hole 4a of the drum 4 catches on the second portion 51b of the wire 51 straightened near the wall portion of the right end portion of the air passage hole 34. In this state, when the drum 4 further rotates counterclockwise, the second portion 51b of the wire 51 is pulled toward the wall portion of the right end portion of the air passage hole 34 by the foreign matter. Then, the wire switch 56 is turned on, and a state in which foreign matter protrudes outward from the air vent hole 4a of the drum 4 is detected.
Therefore, the foreign matter detection unit 50 can detect the foreign matter protruding into the duct hole 34 on the left side (the clockwise rotation downstream side, the predetermined direction downstream side) of the center portion of the duct hole 34, and can detect the foreign matter protruding into the duct hole 34 on the right side (the counterclockwise rotation downstream side, the reverse predetermined direction downstream side) of the center portion of the duct hole 34.
Therefore, when the drum 4 is rotated clockwise in a state where the foreign matter protrudes outward from the ventilation hole 4a of the drum 4, the foreign matter detection portion 50 can detect the foreign matter before the foreign matter collides with the wall portion of the left end portion of the air passage hole 34 by the first portion 51a of the wire 51, and when the drum 4 is rotated counterclockwise in a state where the foreign matter protrudes outward from the ventilation hole 4a of the drum 4, the foreign matter detection portion 50 can detect the foreign matter before the foreign matter collides with the wall portion of the right end portion of the air passage hole 34 by the second portion 51b of the wire 51.
Although detailed description is omitted, the foreign matter detection unit 50 can detect foreign matter using the second portion 51b of the wire 51 when the drum 4 is rotated clockwise in a state where foreign matter protrudes outward from the ventilation hole 4a of the drum 4, and can detect foreign matter using the first portion 51a of the wire 51 when the drum 4 is rotated counterclockwise in a state where foreign matter protrudes outward from the ventilation hole 4a of the drum 4.
Fig. 5 is a control block diagram of dryer 1 of the present embodiment. As shown in fig. 5, the control unit 60 of the dryer 1 is constituted by, for example, a microcomputer or the like, and includes a CPU, a ROM in which a program for controlling the operation of the dryer 1 is stored, and a RAM in which data and the like for executing the program are temporarily stored. The operation of dryer 1 is controlled by control unit 60. The wire switch 56 and the motor 11 are connected to the control unit 60.
When dryer 1 performs the drying operation, controller 60 controls motor 11 to alternately repeat counterclockwise rotation and clockwise rotation of drum 4.
When the wire switch 56 is switched to the on state during the drying operation, the controller 60 controls the motor 11 to stop the rotation of the drum 4.
The dryer 1 of the present embodiment includes: a drying chamber 3 disposed in the case 2; a drum 4 disposed in the drying chamber 3 and having an inner circumferential surface in which a plurality of air holes 4a are formed; a suction path 32 for feeding heated air into the drying chamber 3; an air exhaust passage 35 communicating with an air duct hole 34 formed in a lower portion of the drying chamber 3, for exhausting air in the drying chamber 3; a foreign matter detection unit 50 as a foreign matter detection means capable of detecting foreign matters protruding outward from the air vent hole 4a of the drum 4; and a control unit 60 as a control means for controlling the motor 11 for rotationally driving the drum 4, wherein the control unit 60 controls the motor 11 to stop the rotation of the drum 4 when the foreign matter is detected by the foreign matter detection unit 50.
Accordingly, in the dryer 1 of the present embodiment, since the rotation of the drum 4 is stopped when the foreign matter protruding outward from the ventilation hole 4a of the drum 4 is detected, the end wall portion of the air passage hole 34 and the drum 4 can be prevented from being damaged by the foreign matter which rotates the drum 4 in a state where the foreign matter protrudes.
In the dryer 1 of the present embodiment, the foreign matter detection unit 50 as the foreign matter detection means can detect the foreign matter protruding into the air passage hole 34.
Thus, in the dryer 1 of the present embodiment, since the foreign matter protruding from the ventilation hole 4a of the drum 4 to the outside in the air passage hole 34 is detected, the foreign matter colliding with the end wall portion of the air passage hole 34 can be detected when the drum 4 continues to rotate in a state where the foreign matter protrudes.
In the dryer 1 of the present embodiment, the control portion 60 as the control means controls the motor 11 so that the drum 4 alternately repeats the counterclockwise rotation and the clockwise rotation, and the foreign matter detection portion 50 as the foreign matter detection means can detect the foreign matter on the right side of the central portion of the air passage hole 34 and on the left side of the central portion of the air passage hole 34.
Thus, in dryer 1 of the present embodiment, since foreign matter can be detected on the left side of the center portion of air passage hole 34 when drum 4 rotates clockwise and on the right side of the center portion of air passage hole 34 when drum 4 rotates counterclockwise, foreign matter near the end wall portion of air passage hole 34 can be detected even when drum 4 rotates in either direction with the foreign matter protruding. Therefore, when the foreign matter is not detected by the foreign matter detection unit 50, the foreign matter can be prevented from colliding with the end wall portion of the air passage hole 34.
In the dryer 1 of the present embodiment, the foreign matter detection unit 50 as the foreign matter detection means includes the wire 51 and the wire switch 56 as the movement detection unit that detects the movement of the wire 51, and the wire 51 includes: a first portion 51a which is straightened along the rotation axis of the drum 4 at the downstream side of the clockwise rotation from the central portion of the air passage hole 34; and a second portion 51b straightened along the rotation axis of the drum 4 at the counterclockwise rotation downstream side of the central portion of the air passage hole 34.
Thus, in the dryer 1 of the present embodiment, since the movement of the wires 51 straightened at the respective ends of the air passage hole 34 can be detected by one wire switch 56, the manufacturing cost can be reduced as compared with the case where the wire switches 56 are disposed for both the wires 51 straightened at the respective ends of the air passage hole 34.
While the embodiments of the present invention have been described above, the specific configurations of the respective portions are not limited to the above-described embodiments.
In the above embodiment, the foreign matter protruding outward from the ventilation hole 4a of the drum 4 is detected by the foreign matter detection unit 50 having the wire 51 and the wire switch 56, but the configuration of the foreign matter detection means for detecting the foreign matter protruding outward from the ventilation hole 4a of the drum 4 is arbitrary.
For example, as shown in fig. 6, the foreign object detection unit according to the present invention may be a foreign object detection unit 150 using a photosensor, and the foreign object detection unit 150 may include two light emitting units 151 and two light receiving units 152.
One light emitting portion 151 is disposed on the left side of the front side end portion of the air passage hole 34, and one light receiving portion 152 is disposed on the left side of the rear side end portion of the air passage hole 34. The light emitting unit 151 outputs light to the light receiving unit 152 on the left side (downstream side in the clockwise direction) of the center portion of the air passage hole 34. The light output from the light emitting unit 151 passes through a portion near the left end of the air duct hole 34 that is offset inward from the wall portion of the left end of the air duct hole 34. The light emitting portion 151 and the light receiving portion 152 disposed near the left end portion of the air passage hole 34 form a photosensor.
Similarly, the other light emitting unit 151 is disposed on the right side of the front side end of the air duct hole 34, and the other light receiving unit 152 is disposed on the right side of the back side end of the air duct hole 34. The light emitting unit 151 outputs light to the light receiving unit 152 on the right side (downstream side in the counterclockwise direction) of the center portion of the air passage hole 34. The light output from the light emitting unit 151 passes through a portion near the right end of the air duct hole 34, which is offset inward from the wall portion of the right end of the air duct hole 34. The light emitting portion 151 and the light receiving portion 152 disposed near the right end portion of the air passage hole 34 form a photosensor.
The foreign substance detection unit 150 is turned off when the light output from the light emitting unit 151 is received by the light receiving unit 152, whereas the foreign substance detection unit 150 is turned on when the light output from the light emitting unit 151 is blocked and not received by the light receiving unit 152. Therefore, when it is detected that the foreign matter protruding outward from the ventilation hole 4a of the drum 4 passes between the light emitting unit 151 and the light receiving unit 152, the foreign matter detection unit 150 is switched to the on state.
Therefore, the foreign matter detection unit 150 can detect the foreign matter protruding into the air passage hole 34 on the left side (the clockwise rotation downstream side, the predetermined direction downstream side) of the center portion of the air passage hole 34, and can detect the foreign matter protruding into the air passage hole 34 on the right side (the counterclockwise rotation downstream side, the reverse predetermined direction downstream side) of the center portion of the air passage hole 34.
As shown in fig. 7 (a), the foreign object detection unit of the present invention may be a foreign object detection unit 250 having two limit switches 251.
One limit switch 251 is disposed at the left end portion of the air passage hole 34. The limit switch 251 has a first member 252 attached to the outer peripheral surface of the drying chamber 3, and a second member 253 movably disposed on the first member 252.
The second member 253 can take a projecting position projecting from the first member 252 toward the central portion of the air passage hole 34 as shown in fig. 7 (b) and an inner position not projecting from the first member 252 as shown in fig. 7 (c).
The second member 253 is pressed toward the projecting position by the spring member 254. When a force acts on the second member 253 toward the first member 252, the second member 253 moves from the protruding position to the inner position against the elastic force of the spring member 254. At this time, the moving member 255 attached to the second member 253 moves together with the second member 253, and the tip of the moving member 255 abuts against the detection member 256.
The limit switch 251 of the foreign object detection unit 250 is turned off when the second member 253 is at the protruding position, and turned on when the second member 253 is moved to the inner position. Therefore, the second member 253 is pressed against the first member 252 by the foreign matter protruding outward from the air vent 4a of the drum 4, and the foreign matter detection unit 250 is switched to the on state when the second member 253 is detected to have moved to the inner position.
The other limit switch 251 is disposed at the right end of the air passage hole 34, and can detect a foreign object protruding into the air passage hole 34 on the counterclockwise rotation downstream side of the center of the air passage hole 34. The limit switch 251 disposed at the right end of the air duct hole 34 is the same as the limit switch 251 disposed at the left end of the air duct hole 34.
Therefore, the foreign matter detection unit 250 can detect the foreign matter protruding into the duct hole 34 on the left side (the clockwise rotation downstream side, the predetermined direction downstream side) of the center portion of the duct hole 34, and can detect the foreign matter protruding into the duct hole 34 on the right side (the counterclockwise rotation downstream side, the reverse predetermined direction downstream side) of the center portion of the duct hole 34.
In the above-described embodiment and modification, the foreign matter detection portion 50 can detect a foreign matter protruding into the air passage hole 34 on the left side of the central portion of the air passage hole 34 and can detect a foreign matter protruding into the air passage hole 34 on the right side of the central portion of the air passage hole 34, but is not limited thereto. The same applies to the foreign object detection units 150 and 250. For example, as shown in fig. 8 (a), the foreign matter detection unit 50 may detect only foreign matters protruding into the air passage hole 34 on the left side of the center portion of the air passage hole 34. In fig. 8 (a), a fixed portion 54a is used instead of the second rotating roller 54. As shown in fig. 8 (b), the foreign matter detection unit 50 may detect only foreign matter protruding into the air passage hole 34 on the right side of the center portion of the air passage hole 34. In fig. 8 (b), after the wire 51 is wound around the outer peripheral surface of the first rotating roller 53, the other end of the wire 51 is connected to the wire switch 56.
In the above-described embodiment and modification, the foreign matter detection portions 50, 150, and 250 detect foreign matters protruding into the air passage hole 34 in the vicinity of the wall portion at the left end portion of the air passage hole 34 and in the vicinity of the wall portion at the right end portion of the air passage hole 34, but the detection position for detecting foreign matters protruding into the air passage hole 34 is not limited to this.
In the above embodiment, the wires 51 that are respectively straightened toward both end portions of the air passage hole 34 are formed integrally, and the movement of the wire 51 is detected by one wire switch 56, but different wires corresponding to the first portion 51a and the second portion 51b of the wire 51 may be respectively straightened toward both end portions of the air passage hole 34, and the wire switches 56 may be respectively disposed for the different wires.
Claims (4)
- A dryer is characterized by comprising:a drying chamber arranged in the box body;a drum disposed in the drying chamber and having an inner circumferential surface on which a plurality of vent holes are formed;the air suction path is used for feeding heated air into the drying chamber;the air exhaust path is communicated with an air duct hole formed at the lower part of the drying chamber and is used for exhausting air in the drying chamber;a foreign matter detection unit capable of detecting foreign matters protruding outward from the ventilation holes of the drum; anda control unit for controlling a motor for driving the drum to rotate,the control unit controls the motor to stop rotation of the drum in a case where the foreign matter is detected by the foreign matter detection unit.
- The dryer of claim 1,the foreign matter detection unit can detect the foreign matter protruding into the air duct hole.
- The dryer of claim 2,the foreign matter detection unit controls the motor to alternately repeat rotation in a predetermined direction and rotation in a reverse predetermined direction, and controls the drum to rotate in the predetermined direction and the reverse predetermined directionThe foreign matter detection means may detect the foreign matter on the downstream side in the predetermined direction from the center portion of the air passage hole and on the downstream side in the anti-predetermined direction from the center portion of the air passage hole.
- The dryer of claim 3,the foreign matter detection unit includes a wire and a movement detection portion that detects movement of the wire,the wire has: a first portion that is straightened along the rotation axis of the drum on a downstream side in the predetermined direction from a central portion of the duct hole; and a second portion that is straightened along the rotation axis of the drum on the downstream side of the center portion of the duct hole in the anti-predetermined direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-228189 | 2019-12-18 | ||
| JP2019228189A JP2021094260A (en) | 2019-12-18 | 2019-12-18 | Dryer |
| PCT/CN2020/134951 WO2021121100A1 (en) | 2019-12-18 | 2020-12-09 | Drying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114846195A true CN114846195A (en) | 2022-08-02 |
| CN114846195B CN114846195B (en) | 2023-08-15 |
Family
ID=76429775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080087582.5A Active CN114846195B (en) | 2019-12-18 | 2020-12-09 | Drying machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2021094260A (en) |
| CN (1) | CN114846195B (en) |
| WO (1) | WO2021121100A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008200276A (en) * | 2007-02-20 | 2008-09-04 | Sanyo Electric Co Ltd | Clothes dryer |
| CN105040379A (en) * | 2015-09-15 | 2015-11-11 | 珠海格力电器股份有限公司 | Laundry drying machine and drying control method of same |
| CN105200709A (en) * | 2014-05-30 | 2015-12-30 | 青岛海尔洗衣机有限公司 | Method for controlling dewatering process of washing machine and washing machine |
| CN106894200A (en) * | 2017-02-28 | 2017-06-27 | 无锡小天鹅股份有限公司 | Clothes treatment device and the metal detecting device for clothes treatment device |
| JP2018153613A (en) * | 2017-03-16 | 2018-10-04 | パナソニックＩｐマネジメント株式会社 | Washing and drying apparatus and information processing method |
| CN108625092A (en) * | 2017-03-16 | 2018-10-09 | 松下知识产权经营株式会社 | Wash drying device and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106758064A (en) * | 2016-11-29 | 2017-05-31 | 王勇 | A kind of clothing intelligence dryer and method |
| CN109267290B (en) * | 2018-10-30 | 2023-06-23 | 青岛海尔洗衣机有限公司 | Washing machine control method and washing machine |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008200276A (en) * | 2007-02-20 | 2008-09-04 | Sanyo Electric Co Ltd | Clothes dryer |
| CN105200709A (en) * | 2014-05-30 | 2015-12-30 | 青岛海尔洗衣机有限公司 | Method for controlling dewatering process of washing machine and washing machine |
| CN105040379A (en) * | 2015-09-15 | 2015-11-11 | 珠海格力电器股份有限公司 | Laundry drying machine and drying control method of same |
| CN106894200A (en) * | 2017-02-28 | 2017-06-27 | 无锡小天鹅股份有限公司 | Clothes treatment device and the metal detecting device for clothes treatment device |
| JP2018153613A (en) * | 2017-03-16 | 2018-10-04 | パナソニックＩｐマネジメント株式会社 | Washing and drying apparatus and information processing method |
| CN108625092A (en) * | 2017-03-16 | 2018-10-09 | 松下知识产权经营株式会社 | Wash drying device and control method |
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| WO2021121100A1 (en) | 2021-06-24 |
| CN114846195B (en) | 2023-08-15 |
| JP2021094260A (en) | 2021-06-24 |
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