CN114846195B - Drying machine - Google Patents
Drying machine Download PDFInfo
- Publication number
- CN114846195B CN114846195B CN202080087582.5A CN202080087582A CN114846195B CN 114846195 B CN114846195 B CN 114846195B CN 202080087582 A CN202080087582 A CN 202080087582A CN 114846195 B CN114846195 B CN 114846195B
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- China
- Prior art keywords
- foreign matter
- drum
- air
- duct hole
- drying chamber
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- 238000001035 drying Methods 0.000 title claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 238000009423 ventilation Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010981 drying operation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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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
-
- 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) arranged in the box body (2); a drum (4) which is disposed in the drying chamber (3) and has an inner peripheral surface on which a plurality of ventilation holes (4 a) are formed; an air suction path (32) for feeding heated air into the drying chamber (3); an exhaust path (35) which is communicated with an air duct hole (34) formed at the lower part of the drying chamber (3) and is used for exhausting air in the drying chamber (3); a foreign matter detection unit (50, 150, 250) capable of detecting foreign matter protruding outward from the ventilation hole (4 a) of the drum (4); and a control unit (60) that controls a 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 foreign matter is detected by the foreign matter detection unit (50, 150, 250). The roller (4) can be prevented from rotating in a state that foreign matter protrudes outwards from the vent hole (4 a) of the roller (4), and the end wall part of the air duct hole (34) or the roller (4) is damaged by the foreign matter.
Description
Technical Field
The present invention relates to a dryer provided with a drum having an inner peripheral surface formed with a plurality of ventilation holes.
Background
The dryer of patent document 1 has a drying chamber formed in a casing, and a drum supported by a spindle arm is disposed in 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. A plurality of ventilation holes are formed in the circumferential surface of the drum.
An air outlet is arranged on the upper surface of the rear part of the drying chamber, and an air outlet is arranged on the lower surface of the front part of the drying chamber. Therefore, the heated air is supplied from the air outlet to the drying chamber, passes through the inside of the drum driven to rotate in the drying chamber, and is discharged from the air outlet to the outside.
Foreign matter such as nails and metal parts may be mixed into laundry to be dried, which is put into the drum through the laundry inlet. In this case, if the drum rotates in a state in which foreign matter such as nails or metal parts protrudes outward from the ventilation holes of the drum, the foreign matter collides with the 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 broken. Further, when the foreign matter protruding outward from the vent hole of the drum collides with the wall portion of the end portion of the discharge port, there is a possibility that the inner peripheral portion of the vent 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.
Prior art literature
Patent literature
Patent document 1: japanese patent application 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 capable of preventing a drum from rotating in a state that a foreign matter protrudes outward from a vent hole of the drum, and thus preventing the drying chamber or the drum from being damaged by the foreign matter.
Solution for solving the problem
That is, the dryer of the present invention is characterized by comprising: a drying chamber configured in the box body; a drum disposed in the drying chamber and having an inner circumferential surface formed with a plurality of ventilation holes; the air suction path is used for feeding heating air into the drying chamber; the exhaust passage is communicated with an air passage 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 a foreign matter protruding outward from the air vent 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 in a case where 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 duct 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 an opposite predetermined direction, and the foreign matter detection means is capable of detecting the foreign matter at a downstream side in the predetermined direction from a center portion of the duct hole and at a downstream side in the opposite predetermined direction from the center portion of the duct hole.
In the dryer of the present invention, it is preferable that the foreign matter detection unit includes a wire having: a first portion that is straightened along the rotation axis of the drum at a downstream side in the predetermined direction from the center portion of the duct hole; and a second portion that is straightened along the rotation axis of the drum at a downstream side in the reverse direction from the center portion of the duct hole.
Effects of the invention
In the dryer of the invention, when detecting the foreign matter protruding outwards from the vent hole of the drum, the rotation of the drum is stopped, so the drum can be prevented from rotating in a state that the foreign matter protrudes, and the end wall part of the air duct hole or the drum is prevented from being damaged by the foreign matter.
In the dryer of the present invention, since the foreign matter protruding outward from the air vent hole of the drum in the air duct hole is detected, the foreign matter that collides with the end wall portion of the air duct hole can be detected when the drum continues to rotate in a state in which the foreign matter protrudes.
In the dryer of the present invention, the foreign matter can be detected on the downstream side in the predetermined direction from the center portion of the duct hole when the drum rotates in the predetermined direction, and the foreign matter can be detected on the downstream side in the opposite predetermined direction from the center portion of the duct hole when the drum rotates in the opposite predetermined direction, so that the foreign matter can be detected in the vicinity of the end wall portion of the duct hole even when the drum rotates in any direction in a state in which the foreign matter protrudes. Therefore, the foreign matter can be prevented from colliding with the end wall portion of the duct hole when the foreign matter is not detected by the foreign matter detecting means.
In the dryer of the present invention, since the movement of the wires which are straightened to the both ends of the duct hole can be detected by one movement detecting portion, the manufacturing cost can be reduced as compared with the case where the movement detecting portion is provided to the wires which are straightened to the both ends of the duct hole.
Drawings
Fig. 1 is a front longitudinal sectional view of a dryer 1 according to an embodiment of the present invention.
Fig. 2 is a longitudinal sectional side view of the dryer 1 of fig. 1 at line a-a.
Fig. 3 is a diagram illustrating the structure of the foreign matter detection unit 50.
Fig. 4 (a) shows a state in which the wire 51 is caught by a foreign matter protruding outward from the air vent 4a of the drum 4, and fig. 4 (b) shows a state in which the wire 51 is pulled by a foreign matter protruding outward from the air vent 4a of the drum 4.
Fig. 5 is a control block diagram of the dryer 1 of the present embodiment.
Fig. 6 is a diagram illustrating the structure of the foreign matter detection unit 150.
Fig. 7 is a diagram illustrating the structure of the foreign matter detection unit 250.
Fig. 8 is a diagram illustrating a modification of the foreign matter detection unit 50.
Description of the reference numerals
1: a dryer; 2: a case; 3: a drying chamber; 4: a roller; 4a: a vent hole; 11: a motor; 32: an air suction path; 34: an air duct hole; 35: an exhaust path; 50: a foreign matter detection unit (foreign matter detection means); 51: a wire; 56: a wire switch; 51a: a first portion of wire; 51b: a second portion of the wire; 60: a control unit (control unit); 150: a foreign matter detection unit (foreign matter detection means); 250: foreign matter detection section (foreign matter detection unit).
Detailed Description
Hereinafter, a dryer 1 according to an embodiment of the present invention will be described with reference to the accompanying 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-a line.
The dryer 1 of the present embodiment is a tumble dryer, and has a casing 2 having 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 supported by a spindle 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 peripheral surface of the drum 4.
The spindle 5 is rotatably supported by a bearing 5a attached to the back wall of the drying chamber 3, and a pulley 10 is attached to the front end of the spindle 5 protruding rearward. The rotational driving force of the drum motor 11 as a driving source provided at the rear of the drying chamber 3 is transmitted to the pulley 10 via the motor pulley 12 and the timing belt 16, whereby the drum 4 is rotationally driven about the main shaft 5.
An air outlet 31 is provided in the rear upper surface of the drying chamber 3, and an air intake passage 32 having an air intake 32a opened rearward as an inlet is provided in the upper portion of the drying chamber 3. A heating source 33 for heating the air taken in through the intake port 32a is provided in the intake passage 32. In the case of a commercial clothes dryer, the heating source 33 is usually a high-temperature steam radiator through which 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.
An air duct hole 34 is provided on the front lower surface of the drying chamber 3 at a position distant from the air outlet 31 in the front-rear direction of the drum 4, and an air exhaust path 35 is formed in the lower portion of the drying chamber 3, the air exhaust path being communicated with the air duct hole 34 and having an air outlet 35a opened rearward as an outlet. A lint filter 36 for capturing suspended matter such as lint from the laundry and a fan 37 rotationally driven by a fan motor 37a are provided in the exhaust passage 35. The fan 37 is a device (for example, a sirocco fan) configured to suck air from the front and discharge air sideways (over the entire circumference) when rotationally driven.
Therefore, when the fan 37 is rotationally driven 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 from the air outlet 35a through the air outlet 31, the drying chamber 3, the duct hole 34, and the air discharge path 35. At this time, when the heating 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 duct hole 34 is formed in the lower portion of the drying chamber 3 in the cabinet 2. A foreign matter detection portion 50 capable of detecting foreign matters protruding outward from the air vent 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 matter detection unit 50.
The foreign matter detection unit 50 includes: a 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 portion of the wire 51 is mounted.
The fixing portion 52 is disposed on the right side of the front-side end portion of the duct hole 34. The first rotating roller 53 is disposed on the right side of the rear-side end portion of the air duct hole 34, the second rotating roller 54 is disposed on the left side of the rear-side end portion of the air duct hole 34, and the third rotating roller 55 is disposed on the left side of the front-side end portion of the air duct hole 34. The wire switch 56 is disposed on the left side of the third rotary roller 55.
After one end of the wire 51 is attached to the fixing portion 52, the wire is straightened from the front side to the back side in the vicinity of the wall portion of the right end of the duct hole 34. After that, the wire 51 is straightened toward the second rotating roller 54 on the back surface side of the air passage hole 34 after bypassing the outer peripheral surface of the first rotating roller 53. The wire 51 bypassing the outer peripheral surface of the second rotating roller 54 is straightened from the back surface side to the front surface side in the vicinity of the wall portion of the left side end portion of the air passage hole 34. After that, after the wire 51 passes around the outer peripheral surface of the third rotating roller 55, the other end portion of the wire 51 is connected to the wire switch 56.
The wire 51 has: the first portion 51a straightened along the rotation axis of the drum 4 at the downstream side in the clockwise rotation direction than the center portion of the air passage hole 34 located below the rotation axis of the drum 4; and a second portion 51b straightened along the rotation axis of the drum 4 at a downstream side in the counterclockwise rotation direction from the center portion of the air passage hole 34. That is, the wire 51 has a first portion 51a disposed on the left side of the air passage hole 34 (the center portion in the rotation direction of the drum 4) and a second portion 51b disposed on the right side of the center portion of the air passage hole 34.
The first portion 51a of the wire 51 straightened from the back side to the front side near the wall portion of the left end portion of the air passage hole 34 is arranged to deviate inward from the wall portion of the left end portion of the air passage hole 34. Similarly, the second portion 51b of the wire 51 straightened from the front side to the rear side near the wall portion of the right side end portion of the duct hole 34 is arranged to deviate inward from the wall portion of the right side end portion of the duct hole 34.
The wire switch 56 of the foreign matter detection unit 50 is turned off when a force is not applied to the wire 51, that is, when a foreign matter protruding outward from the air hole 4a of the drum 4 does not catch the wire 51, and is turned on when the foreign matter catches the wire 51 and the other end of the wire 51 is pulled. Therefore, when a force acts on the wire 51 and 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 wire 51 is caught by a foreign matter protruding outward from the air vent 4a of the drum 4, and fig. 4 (b) shows a state in which the wire 51 is pulled by a foreign matter protruding outward from the air vent 4a of the drum 4. In fig. 4 (a) and 4 (b), foreign matter protruding outward from the air vent 4a of the drum 4 is illustrated, and illustration of the drum 4 is omitted.
When the drum 4 rotates clockwise due to foreign matter such as nails or metal parts being mixed with laundry put into the drum 4, the foreign matter protrudes outward from the air hole 4a located at the lower end of the drum 4, and when the foreign matter is placed in the duct hole 34 of the drying chamber 3, the foreign matter approaches the wall portion of the left end of the duct hole 34 when the drum 4 rotates further clockwise.
Thereafter, as shown in fig. 4 (a), the foreign matter protruding outward from the air vent 4a of the drum 4 is caught by the first portion 51a of the wire 51 straightened near the wall portion of the left end portion of the air duct hole 34. In this state, when the drum 4 is further rotated clockwise, as shown in fig. 4 (b), the first portion 51a of the wire 51 is pulled toward the wall portion of the left end portion of the duct 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 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 duct hole 34 of the drying chamber 3, the foreign matter approaches the wall portion of the right end of the duct hole 34 when the drum 4 rotates counterclockwise further.
Thereafter, foreign matter protruding outward from the air vent 4a of the drum 4 is caught by 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 is further rotated counterclockwise, the second portion 51b of the wire 51 is pulled toward the wall portion of the right end portion of the duct 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 4a of the drum 4 is detected.
Therefore, the foreign matter detection unit 50 can detect foreign matter protruding into the duct hole 34 on the left side (clockwise rotation downstream side, downstream side in the predetermined direction) from the central portion of the duct hole 34, and can detect foreign matter protruding into the duct hole 34 on the right side (counterclockwise rotation downstream side, downstream side in the opposite direction) from the central portion of the duct hole 34.
Therefore, in the case where the drum 4 rotates clockwise in a state in which the foreign matter protrudes outward from the air vent 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 duct hole 34 by the first portion 51a of the wire 51, and in the case where the drum 4 rotates counterclockwise in a state in which the foreign matter protrudes outward from the air vent 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 duct hole 34 by the second portion 51b of the wire 51.
Although the detailed description is omitted, the foreign matter detection portion 50 can detect the foreign matter by the second portion 51b of the wire 51 in the case where the drum 4 rotates clockwise in a state where the foreign matter protrudes outward from the air hole 4a of the drum 4, and the foreign matter detection portion 50 can detect the foreign matter by the first portion 51a of the wire 51 in the case where the drum 4 rotates counterclockwise in a state where the foreign matter protrudes outward from the air hole 4a of the drum 4.
Fig. 5 is a control block diagram of the 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 storing a program for controlling the operation of the dryer 1, and a RAM temporarily storing data and the like for executing the program. The operation of the dryer 1 is controlled by the control unit 60. The wire switch 56 and the motor 11 are connected to the control unit 60.
In the case where the dryer 1 performs a drying operation, the control unit 60 controls the motor 11 to alternately repeat the counterclockwise rotation and the clockwise rotation of the drum 4.
When the wire switch 56 is turned on during the drying operation, the control unit 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 peripheral surface formed with a plurality of ventilation holes 4 a; an air suction path 32 for feeding heated air into the drying chamber 3; an exhaust path 35 communicating with an air duct hole 34 formed at 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 a foreign matter protruding outward from the air vent 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.
As a result, in the dryer 1 of the present embodiment, when foreign matter protruding outward from the air hole 4a of the drum 4 is detected, the rotation of the drum 4 is stopped, and therefore, the drum 4 can be prevented from rotating in a state in which the foreign matter protrudes, and the end wall portion of the air duct hole 34 or the drum 4 is prevented from being damaged by the foreign matter.
In the dryer 1 of the present embodiment, the foreign matter detection portion 50 as the foreign matter detection means can detect the foreign matter protruding into the duct hole 34.
As a result, in the dryer 1 of the present embodiment, since foreign matter protruding outward from the air vent 4a of the drum 4 in the air duct hole 34 is detected, when the drum 4 continues to rotate in a state in which the foreign matter protrudes, the foreign matter that collides with the end wall portion of the air duct hole 34 can be detected.
In the dryer 1 of the present embodiment, the control section 60 as the control means controls the motor 11 to alternately repeat the counterclockwise rotation and the clockwise rotation of the drum 4, and the foreign matter detection section 50 as the foreign matter detection means can detect the foreign matter on the right side of the central portion of the air duct hole 34 and on the left side of the central portion of the air duct hole 34.
Thus, in the dryer 1 of the present embodiment, since the foreign matter can be detected on the left side of the center portion of the duct hole 34 when the drum 4 rotates clockwise, and on the right side of the center portion of the duct hole 34 when the drum 4 rotates counterclockwise, the foreign matter can be detected in the vicinity of the end wall portion of the duct hole 34 even when the drum 4 rotates in any direction in a state in which the foreign matter protrudes. Therefore, the foreign matter can be suppressed from colliding with the end wall portion of the duct hole 34 when the foreign matter is not detected by the foreign matter detection portion 50.
In the dryer 1 of the present embodiment, the foreign matter detection portion 50 as the foreign matter detection means includes the wire 51 and the wire switch 56 as the movement detection portion that detects movement of the wire 51, and the wire 51 has: the first portion 51a straightened along the rotation axis of the drum 4 at the downstream side of the clockwise rotation of the central portion of the duct hole 34; and a second portion 51b straightened along the rotation axis of the drum 4 at a side downstream of the counterclockwise rotation of the center portion of the duct hole 34.
In this way, in the dryer 1 of the present embodiment, since the movement of the wires 51 that are straightened toward the both end portions of the duct hole 34 can be detected by one wire switch 56, the manufacturing cost can be reduced as compared with the case where the wire switch 56 is disposed for the wires 51 that are straightened toward the both end portions of the duct hole 34.
The embodiments of the present invention have been described above, but the specific configurations of the respective parts are not limited to the above embodiments.
In the above embodiment, the foreign matter protruding outward from the air hole 4a of the drum 4 is detected by the foreign matter detecting portion 50 having the wire 51 and the wire switch 56, but the configuration of the foreign matter detecting means for detecting the foreign matter protruding outward from the air hole 4a of the drum 4 is arbitrary.
For example, as shown in fig. 6, the foreign matter detection unit of the present invention may be a foreign matter detection unit 150 using a photoelectric sensor, and the foreign matter 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 duct hole 34, and one light receiving portion 152 is disposed on the left side of the rear side end portion of the air duct hole 34. The light emitting portion 151 outputs light to the light receiving portion 152 on the left side (downstream side in the clockwise rotation direction) than the central portion of the duct hole 34. The light output from the light emitting portion 151 passes through a portion in the vicinity of the left end portion of the air duct hole 34, which is offset inward from the wall portion of the left end portion 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 duct hole 34 form a photoelectric sensor.
Similarly, the other light emitting portion 151 is disposed on the right side of the front-side end portion of the air duct hole 34, and the other light receiving portion 152 is disposed on the right side of the rear-side end portion of the air duct hole 34. The light emitting portion 151 outputs light to the light receiving portion 152 on the right side (downstream side in the counterclockwise rotation direction) of the central portion of the duct hole 34. The light output from the light emitting portion 151 passes through a portion in the vicinity of the right end portion of the duct hole 34, which is deviated inward from the wall portion of the right end portion of the duct hole 34. The light emitting portion 151 and the light receiving portion 152 disposed near the right end portion of the duct hole 34 form a photoelectric sensor.
The foreign matter 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 matter 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 foreign matter protruding outward from the air hole 4a of the drum 4 is detected to pass between the light emitting portion 151 and the light receiving portion 152, the foreign matter detecting portion 150 is switched to the on state.
Therefore, the foreign matter detection unit 150 can detect foreign matter protruding into the duct hole 34 on the left side (clockwise rotation downstream side, downstream side in the predetermined direction) from the central portion of the duct hole 34, and can detect foreign matter protruding into the duct hole 34 on the right side (counterclockwise rotation downstream side, downstream side in the opposite direction) from the central portion of the duct hole 34.
As shown in fig. 7 (a), the foreign matter detection unit of the present invention may be a foreign matter detection unit 250 having two limit switches 251.
One limit switch 251 is disposed at the left end portion of the air duct hole 34. The limit switch 251 includes 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 protruding position protruding from the first member 252 toward the central portion of the duct hole 34 as shown in fig. 7 (b) and an internal position not protruding from the first member 252 as shown in fig. 7 (c).
The second member 253 is pressed toward the protruding 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 toward 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 detecting member 256.
The limit switch 251 of the foreign matter detection unit 250 is turned off when the second member 253 is located at the protruding position, whereas it is 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 hole 4a of the drum 4, and when the movement of the second member 253 to the inner position is detected, the foreign matter detection unit 250 is switched to the on state.
The other limit switch 251 is disposed at the right end portion of the duct hole 34, and is capable of detecting foreign matter protruding into the duct hole 34 at a position downstream in the counterclockwise rotation direction from the center portion of the duct hole 34. The limit switch 251 disposed at the right end portion of the air duct hole 34 is the same as the limit switch 251 disposed at the left end portion of the air duct hole 34.
Therefore, the foreign matter detection unit 250 can detect foreign matter protruding into the duct hole 34 on the left side (clockwise rotation downstream side, downstream side in the predetermined direction) from the central portion of the duct hole 34, and can detect foreign matter protruding into the duct hole 34 on the right side (counterclockwise rotation downstream side, downstream side in the opposite direction) from the central portion of the duct hole 34.
In the above embodiment and modification, the foreign matter detection portion 50 can detect foreign matter protruding into the duct hole 34 on the left side of the center portion of the duct hole 34, and can detect foreign matter protruding into the duct hole 34 on the right side of the center portion of the duct hole 34, but is not limited thereto. The same is true of the foreign matter detection portions 150, 250. For example, as shown in fig. 8 (a), the foreign matter detection unit 50 may detect only foreign matter protruding into the duct hole 34 on the left side of the center portion of the duct 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 duct hole 34 on the right side of the central portion of the duct 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 portion of the wire 51 is connected to the wire switch 56.
In the above embodiment and modification examples, the foreign matter detection portions 50, 150, 250 detect foreign matters protruding into the duct hole 34 in the vicinity of the wall portion of the left end portion of the duct hole 34 and the vicinity of the wall portion of the right end portion of the duct hole 34, but the detection position for detecting foreign matters protruding into the duct hole 34 is not limited thereto.
In the above embodiment, the wires 51 which are straightened to the both end portions of the duct hole 34 are integrally formed, and the movement of the wires 51 is detected by one wire switch 56, but different wires corresponding to the first portion 51a and the second portion 51b of the wires 51 may be straightened to the both end portions of the duct hole 34, and the wire switch 56 may be arranged for the different wires.
Claims (4)
1. A dryer, characterized by comprising:
a drying chamber configured in the box body;
a drum disposed in the drying chamber and having an inner circumferential surface formed with a plurality of ventilation holes;
the air suction path is used for feeding heating air into the drying chamber;
the exhaust passage is communicated with an air passage 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 a foreign matter protruding outward from the air vent of the drum; and
a control unit for controlling a motor for driving the drum to rotate,
in the case that the foreign matter is detected by the foreign matter detection unit, the control unit controls the motor to stop the rotation of the drum.
2. The dryer of claim 1, wherein the dryer further comprises a dryer housing,
the foreign matter detection unit can detect the foreign matters protruding into the air duct hole.
3. The dryer as claimed in claim 2, wherein,
the foreign matter detection unit controls the motor to alternately repeat rotation in a prescribed direction and rotation in a reverse prescribed direction of the drum, and
the foreign matter detection unit may detect the foreign matter at a downstream side in the predetermined direction from a central portion of the duct hole and at a downstream side in the reverse predetermined direction from the central portion of the duct hole.
4. The dryer as claimed in claim 3, wherein,
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 at a downstream side in the predetermined direction from the center portion of the duct hole; and a second portion that is straightened along the rotation axis of the drum at a downstream side in the reverse direction from the center portion of the duct hole.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019228189A JP7503259B2 (en) | 2019-12-18 | 2019-12-18 | Dryer |
| JP2019-228189 | 2019-12-18 | ||
| PCT/CN2020/134951 WO2021121100A1 (en) | 2019-12-18 | 2020-12-09 | Drying machine |
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| CN114846195A CN114846195A (en) | 2022-08-02 |
| CN114846195B true CN114846195B (en) | 2023-08-15 |
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| JP (1) | JP7503259B2 (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 | Washing and drying machine and drying control method thereof |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | Washing and drying machine and drying control method thereof |
| 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 | Publication date |
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| JP2021094260A (en) | 2021-06-24 |
| WO2021121100A1 (en) | 2021-06-24 |
| CN114846195A (en) | 2022-08-02 |
| JP7503259B2 (en) | 2024-06-20 |
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