JP2011130785A - Clothes dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the lengthening of a time required for drying by suppressing a decrease in flow rate of drying air due to catching of lint by filter sections. <P>SOLUTION: The clothes dryer includes: a first filter section 34 for catching the lint in the drying air introduced from an introduction section 32; a second filter section 36 provided on a lateral side of the first filter section 34; and a lint removal device 38 for scraping off the lint caught by the first filter section 34 and the second filter section 36, wherein this clothes dryer is configured to move the lint scraped off by the lint removal device 38 towards the second filter section 36. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a clothes dryer for drying clothes in a drying cabinet.

  Conventionally, this type of clothes dryer includes a drum for containing and stirring clothes, a dehumidifying means for cooling the drying air, and a circulation air passage having a heating means for heating the dehumidified dry air, A high-temperature drying unit having a blowing unit for blowing air to the passage, connecting the drum and the circulation air passage, contacting the clothes in the drum and dampening the air dampened by the dehumidifying means and the heating unit provided in the circulation air passage Generally, air is blown to a drum as working air and circulated to advance the drying of clothing.

  The lint separated from the clothes stirred in the drum is mixed in the drying air that passes through the circulation air passage, and the dehumidification means, the heating means, and the air blowing means that blows the drying air are provided in the circulation air passage. A filter is provided in the circulation air path to capture lint from the drying air in order to adhere and accumulate and reduce their function and adhere to clothing in the drum. As the drying operation progresses, the lint separated from the clothing is captured by the filter, and the ventilation resistance of the drying air passing through the circulation air passage increases and the air volume decreases, so the lint captured by the filter is removed. (For example, refer to Patent Document 1).

  As shown in FIG. 19, the configuration described in the patent document includes a filter unit 101 that captures lint generated from clothing, a lint collection unit 102 that collects lint captured by the filter unit 101, and a filter unit 101. The lint captured in step (1) is scraped off by rotating a spiral wire and is discharged to the lint collection unit 102.

  The filter unit 101 includes a substantially semi-cylindrical filter 105 that is substantially orthogonal to the blowing direction of the drying air that circulates through the air passage 104, and the discharge means 103 is for drying that passes through the substantially semi-cylindrical filter 105. The spiral wire rod in contact with the surface that captures lint from the air is rotated and scraped by the motor 106 and discharged to the lint collection unit 102.

  A part of the drying air circulating through the air passage 104 includes a lint collection box 107 that forms a lint collection unit 102 from the filter unit 101, a bypass filter 109 provided in an opening 108 formed at the bottom of the lint collection box 107, lint It passes through the opening 111 provided at the bottom of the frame 110 that detachably accommodates the collection box 107 and the communication passage 112, and flows to the air passage 104 on the downstream side of the filter unit 101.

  In this manner, the lint captured on the inner surface of the filter 105 is pushed out to the lint collection unit 102 with a spiral wire and stored in the lint collection box 107. Further, a part of the drying air circulating through the air passage 104 does not pass through the filter 105 but passes through the bypass filter 109 of the lint collection unit 102 and flows to the air passage 104 on the downstream side of the filter unit 101. . The flow of drying air passing through the lint collection unit 102 compresses the lint accumulated in the lint collection box 102 to reduce the bulk, and increases the amount of lint collected in the lint collection box 107 to reduce the number of times of disposal. I try to do it.

JP 2008-6045 A

  However, in the above-described conventional configuration, when the lint pushed out to the lint collection unit 102 by the spiral wire rod and stored in the lint collection box 102 is compressed by the flow of drying air, the bypass filter 109 is blocked by the compressed lint. Part of the drying air that circulates in the air path 104 does not flow from the filter unit 101 to the lint collection unit 102, and all of the drying air that circulates in the air path 104 passes through the filter 105.

  As a result, even if the lint captured by the filter 105 is scraped by rotating the spiral wire, it is pressed against the filter 105 again by the pressure of the drying air passing through the filter 105. That is, during the drying operation in which the capture of lint in the filter unit 101 proceeds, the captured lint cannot be removed from the filter 105 even if the discharge means 103 is operated. There was a problem that the ventilation resistance of the passing drying air increased, and a decrease in the air volume could not be prevented.

  Further, in a state where the drying air does not pass through the filter 105, that is, before or after the drying operation, the lint captured by the filter 105 is scraped off by rotating the spiral wire rod and pushed out to the lint collecting unit 102. Even when the drying operation is started in a state where the filter unit 101 is cleaned, the ventilation resistance of the drying air increases due to the increase in lint captured by the filter 105 as the drying operation proceeds, and the time required for drying due to the decrease in the air volume. The problem of lengthening cannot be solved.

  The present invention solves the above-mentioned conventional problems, and suppresses a decrease in the air volume of the drying air due to the capture of lint in the filter section that proceeds during the drying operation, and prevents an increase in the time required for drying. With the goal.

  In order to solve the above-described conventional problems, a clothes dryer of the present invention includes a drying filter device that is disposed in a circulation air passage and captures lint contained in drying air generated from laundry, and the drying filter device Are an introduction part for introducing drying air, a first filter part for capturing lint from the drying air introduced from the introduction part, and a second filter part provided on the side of the first filter part. And a lint removing device that scrapes the lint captured by the first and second filter units, and the lint scraped by the lint removing device is moved toward the second filter unit. Is.

  As a result, the lint scraped off by the lint removing device can be moved to the second ventilation section by the drying air introduced into the first ventilation section, and is captured by the first filter section during the drying operation. Therefore, it is possible to prevent a decrease in the air volume of the drying air flowing through the circulation air path by the lint and to prevent the time required for drying from becoming long.

  The clothes dryer of the present invention can suppress a decrease in the air volume of the drying air due to the capture of lint by the drying filter device, and can prevent the time required for drying from becoming long.

Sectional drawing of the clothes dryer in the 1st Embodiment of this invention Lower perspective view of the drying filter device of the clothes dryer The lower perspective view which opened the filter part of the drying filter apparatus of the clothes dryer Front view of the drying filter device of the clothes dryer AA sectional view of the clothes dryer in FIG. Side view of the blade of the drying filter device of the clothes dryer Figure 6 B view of the clothes dryer Rear view of the drying filter device of the clothes dryer CC sectional view of the clothes dryer in FIG. Relationship diagram of blade and stopper of drying filter device of the clothes dryer Time chart showing the operation of the clothes dryer (A) (b) (c) Operation | movement explanatory drawing of the blade of the drying filter apparatus of the clothes dryer Time chart showing the operation of the blade of the drying filter device of the clothes dryer Time chart showing the operation of another example of the clothes dryer Time chart showing the operation of another example of the clothes dryer The time chart which shows operation | movement of the clothes dryer in the 2nd Embodiment of this invention Sectional drawing of the clothes dryer in the 3rd Embodiment of this invention Time chart showing the operation of the clothes dryer Sectional view of the main parts of a conventional clothes dryer

  According to a first aspect of the present invention, there is provided a drum for storing laundry, an air supply port for introducing drying air into the drum, an exhaust port for discharging drying air from the drum, and a drying chamber discharged from the exhaust port. A circulation air passage that circulates air from the air supply opening into the drum, a blower that blows air to the circulation air passage, a heating means that heats drying air, and a laundry that is disposed in the circulation air passage and is generated from the laundry. A drying filter device that captures lint contained in the drying air, wherein the drying filter device includes an introduction unit that introduces drying air, and a first that captures lint from the drying air introduced from the introduction unit. A filter unit, a second filter unit provided on a side of the first filter unit, and a lint removing device that scrapes lint captured by the first and second filter units. Scraped off with removal device By moving the nozzle toward the second filter unit, it is possible to suppress a decrease in the flow rate of the drying air due to the capture of lint in the filter unit that proceeds during the drying operation, and the first filter The lint scraped off from the part can be prevented from being re-captured by the first filter part, and good drying air can be obtained while capturing the lint from the drying air passing through the first filter part. The ventilation of can be secured. As a result, it is possible to prevent clothes from drying for a long time due to a decrease in the flow rate of drying air and an increase in the amount of electric power used thereby, and always enable ecological drying operation in a short time. it can.

  In particular, according to the second invention, the dry filter device of the first invention has a first ventilation part that has the first filter part and allows the drying air introduced from the introduction part to pass therethrough, and the second filter part. A second ventilation portion provided on a side of the first ventilation portion, and an opening through which a part of the drying air introduced into the first ventilation portion flows to the second ventilation portion. The lint scraped off by the lint removing device is moved to the second ventilation section by the drying air introduced into the first ventilation section, so that the lint at the filter section that proceeds during the drying operation In addition, it is possible to suppress a decrease in the flow rate of the drying air due to the trapping of the air and to prevent the lint scraped off from the first filter portion from being recaptured by the first filter portion. Good while capturing lint from drying air passing through the filter It is possible to ensure ventilation of the drying air. As a result, it is possible to prevent clothes from drying for a long time due to a decrease in the flow rate of drying air and an increase in the amount of electric power used thereby, and always enable ecological drying operation in a short time. it can.

According to a third aspect of the present invention, in particular, the dry filter device according to the first or second aspect of the present invention is provided with an opening on the side of the first ventilation portion, and one of the drying air introduced into the first ventilation portion. Since the portion flows from the opening to the second ventilation portion, the inflow of drying air from the first ventilation portion to the second ventilation portion is promoted. Movement of the lint scraped off to the second ventilation portion by the drying air is promoted, and an increase in pressure loss due to re-capturing in the first filter portion can be prevented.

  In the fourth aspect of the invention, in particular, the dry filter device of the third aspect of the invention is provided with an opening adjacent to the side of the first filter part provided in the first ventilation part. Not all the drying air introduced into the first ventilation section passes through the first filter section and exits from the drying filter device, but a part of the drying air passes through the opening and passes through the second filter section. Guided to the ventilation section. At that time, the drying air that could not pass through the first filter part once collides with the first filter part, and then forms a flow along the first filter part. Therefore, by providing an opening for guiding the drying air to the second ventilation part adjacent to the side of the first filter part, the drying air that could not pass through the first filter part is A state of flowing along the first filter portion from the opening portion to the second ventilation portion can be created. As a result, it is possible to generate a flow that guides the lint scraped off to the second ventilation portion along the first filter portion where the lint is captured. Therefore, the lint scraped off by the first filter portion is generated. Can be promptly moved to the second ventilation portion, and re-capture at the first filter portion can be reliably prevented.

  According to a fifth aspect of the invention, in particular, the dry filter device according to any one of the second to fourth aspects includes an opening for flowing drying air from the first ventilation section to the second ventilation section, and the opening section. An opening / closing body is provided that opens and closes, except when the lint scraped off is moved to the second ventilation portion by driving the lint removing device or opening the opening for a predetermined time after driving. Since the drying air does not flow into the second ventilation section by closing the section, the amount of lint captured not captured by the first filter section but captured for the first time by the second filter section is reduced, and the opening / closing body is opened. An increase in pressure loss of the second filter portion when opened is suppressed. Therefore, even if the drying operation is repeated for a longer time or more times, the amount of drying air flowing from the first ventilation section to the second ventilation section due to an increase in the pressure loss of the second filter section is reduced. Can be suppressed. And even if the lint scraped off by the first filter section is repeated for a longer time or more times of the drying operation, the movement to the second ventilation section riding on the flow of the drying air is maintained. The first filter unit can secure good ventilation air while capturing lint from the drying air.

  According to a sixth aspect of the present invention, in particular, the lint removing device according to any one of the first to fifth aspects includes a rotation shaft provided in parallel with the lint capturing surfaces of the first filter unit and the second filter unit, A thin plate-like blade extending from the rotation shaft toward the lint capturing surfaces of the first filter portion and the second filter portion, and a motor for driving the rotation shaft, the blade being movable by the motor Then, since the lint captured by the first filter unit and the second filter unit is scraped off, the captured lint is scraped off from the first filter unit and the second filter unit. Therefore, the necessary force is applied from the motor via the blade, so that it can be scraped off reliably, reducing the ventilation resistance of the drying air passing through the first filter section, and ensuring an increase in pressure loss. Prevention It can be. At the same time, lint captured by the second filter unit and scraped from the first filter unit is also scraped from the second filter unit by the blade, so that the drying air passing through the second filter unit Ventilation resistance can be reduced, and the flow of drying air from the first ventilation section to the second ventilation section can be maintained well. In addition, even when a large amount of lint scraped off by the first filter unit stays in the second ventilation unit, the lint can be agitated by the blade. The lint attracted to the lint capturing surface of the filter portion can be held by the entire second ventilation portion.

According to a seventh aspect of the present invention, in particular, in the lint removing device according to the sixth aspect of the present invention, the position of the blade provided in the first filter section when the operation is stopped is the flow direction of the drying air introduced into the first ventilation section. Is set to be approximately parallel to the blade, preventing the blade from obstructing the flow of drying air and increasing pressure loss, and reducing the aerodynamic resistance that the blade receives from the drying air when the blade is stopped. Therefore, the rotational torque required when the blade starts to move from the operation stop state can be reduced.

  In an eighth aspect of the invention, in particular, the dry filter device according to any one of the first to seventh aspects of the invention is provided so as to be detachable from the body of the clothes dryer, and the lint removing device is linked to a motor provided in the body. Since the motor is separated from the dry filter device to reduce the weight, it can be removed from the body of the clothes dryer when the user maintains the dry filter device, such as when the accumulated lint is discarded. It becomes easy. In addition, by providing a motor for driving the lint removing device in the body of the clothes dryer, which is relatively easy to secure a space, a motor with a higher output can be used, and lint removing capability is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a cross-sectional view of a clothes dryer according to the first embodiment of the present invention, FIG. 2 is a lower perspective view of a drying filter device of the clothes dryer, and FIG. 3 is a drying filter device of the clothes dryer. FIG. 4 is a front view of the drying filter device of the clothes dryer, FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4, and FIG. 6 is the clothes. 7 is a side view of the blade of the dryer, FIG. 7 is a view of the clothes dryer as viewed from an arrow B in FIG. 6, FIG. 8 is a rear view of the introduction portion of the drying filter device of the clothes dryer, and FIG. FIG. 8 is a cross-sectional view of the clothes dryer taken along line CC in FIG. 8, FIG. 10 is a diagram showing the relationship between the blade and the stopper of the clothes dryer, FIG. 11 is a time chart showing the operation of the clothes dryer, and FIG. FIG. 13 is an operation explanatory view of the blade of the dryer, and FIG. 13 is a tie showing the operation of the blade of the drying filter device of the clothes dryer. It is a chart.

  1 to 13, the outer tub 1 is elastically supported by a plurality of suspension mechanisms 3 inside a housing 2 of a clothes dryer. The drum 4 has an insertion port 6 for taking in and out the laundry 5 on the front side, is configured in a bottomed cylindrical shape, and is disposed in the outer tub 1. The drum 4 is a drying cabinet that dries the laundry 5, and is provided so as to be rotatable by the drum rotating shaft 11 so that a predetermined amount of the laundry 5 to be dried can be accommodated. A plurality of discharge holes 8 are provided in the peripheral wall 7 of the drum 4, and a plurality of stirring baffles 9 for efficiently lifting the laundry are provided on the peripheral wall in the drum 4. The outer tub 1, the drum 4, and the drum rotation shaft 11 are disposed to be inclined upward by an angle θ (for example, 20 °) with respect to the horizontal.

  Drive means 10 for rotating the drum 4 forward and backward is provided outside the outer tub 1. A front surface of the housing 1 is provided with a substantially circular slot 12 for taking in and out the laundry 5 and a door 13 for opening and closing it. The opening of the outer tub 1 facing the inlet 12 is connected to the housing 1 by a packing 14 while ensuring an airtight structure.

  A blower 15 for supplying the drying air to the drum 4 is provided in a substantially upper part of the housing 2, and a heating means 16 constituted by a heater or the like for heating the blown drying air is provided on the downstream side of the blower 15. The blower 15 and the heating means 16 are provided in the circulation air passage 17. The downstream side of the circulation air passage 17 communicates with an air supply port 18 provided on the back surface of the outer tub 1, and the upstream side of the circulation air passage 17 is an exhaust port 19 provided on the upper part of the peripheral wall of the outer tub 1. Communicated with.

  The drying air heated by the heating means 16 passes through the air supply port 18 and reaches the inside of the drum 4. The drying air discharged from the drum 4 is configured to circulate to the drum 4 through the exhaust port 19, the circulation air passage 17, the blower 15, and the air supply port 18. The above-described flow of drying air (indicated by an arrow in FIG. 1) is configured as a circulating air path 17a.

  In the circulation air passage 17, a cooling water supply unit 20 that supplies cooling water to dehumidify the drying air, a heat exchanger 21 that cools the drying air by cooling water supplied from the cooling water supply unit 20, A dry filter device 31 is provided. The drying air that has become wet due to contact with the laundry 5 enters the circulation air passage 17 from the exhaust port 19, is cooled by the heat exchanger 21, and is dehumidified. The cooling water and the dehumidified water are discharged out of the housing 2. The drying filter device 31 is provided on the upstream side of the blower 15, and captures lint contained in the drying air generated from the laundry 5, thereby preventing problems caused by lint accumulation in the blower 15.

  The drying filter device 31 is introduced into the introduction portion 32 for introducing the drying air flowing through the circulation air passage 17, the first ventilation portion 33 for passing the drying air introduced from the introduction portion 32, and the first ventilation portion 33. The first filter part 34 that captures lint from the dried drying air, the second ventilation part 35 provided on the side of the first ventilation part 33, and the second ventilation part 35 provided on the second ventilation part 35 Captured by the filter unit 36, the opening 37 through which a part of the drying air introduced into the first ventilation unit 33 flows to the second ventilation unit 35, and the first filter unit 34 and the second filter unit 36 It has a lint removing device 38 for scraping off the lint.

  An opening 37 is provided adjacent to the side of the first filter part 34 provided in the first ventilation part 33, and a part of the drying air introduced into the first ventilation part 33 is part of the opening 37. To the second ventilation part 35. The first filter part 34 and the second filter part 36 are integrally connected so that the capture surfaces of the respective lints are adjacent to each other, and one end thereof is the first ventilation part 33 and the second ventilation part. It is pivotally attached to 35 by a hinge part 34a. The captured lint can be taken out by opening the first filter part 34 and the second filter part 36, and is kept closed when the dry filter device 31 is mounted on the clothes dryer. Is done.

  The lint removing device 38 includes a rotation shaft 39 provided in parallel with the lint capturing surfaces of the first filter portion 34 and the second filter portion 36, and the first filter portion 34 and the second filter portion 36 extending from the rotation shaft 39. Thin plate-like blades 40a and 40b extending toward the lint capturing surface of the first and second blades 40a and 40b, which are rotated about the rotation shaft 39, respectively. The lint captured by the filter unit 36 is scraped off.

  The opening 37 is provided in a substantially semicircular shape along the rotation trajectory of the tips of the blades 40a and 40b, and the lint capturing surfaces of the first filter portion 34 and the second filter portion 36 are similarly blades. It has a substantially semi-cylindrical shape along the rotational trajectory of the tip portions of 40a and 40b. The lint removing device 38 is provided with a substantially semicircular opening / closing body 41 between the blades 40a and 40b, and the opening / closing body 41 also rotates around the rotation shaft 39 in conjunction with the driving of the blades 40a, 40b. The opening 37 is opened and closed.

  The blades 40b provided on the second filter portion 36 are formed in opposite directions from the central shaft portion of the rotating shaft 39 to both sides, and are respectively provided in the direction of the rotating shaft at the edge of the blade 40b facing the lint capturing surface. A notch 40c formed by shifting is provided. The blades 40b provided in the second filter unit 36 are respectively provided by being shifted by a predetermined angle α, β (for example, 130 °, 70 ° for both) with respect to the blade 40a provided in the first filter unit 34. ing.

The position when the operation of the blade 40a provided in the first filter portion 34 is stopped is set at a substantially semicircular substantially intermediate portion of the opened opening 37, which is in the first ventilation portion 33. It is substantially parallel to the flow direction of the drying air introduced. When the blade 40a provided in the first filter part 34 stops operating, the blade 40b provided in the second filter part 36 is in a position out of the opened opening 37. At this time, the opening / closing body 41 closes the opening 37 to prevent the drying air from flowing.

  Above the inner wall of the first ventilation portion 33, there is provided a stopper 42 as blade position detecting means for restricting the rotation by abutting the tip of the blade 40a. When the rotation of the blade 40a is restricted by the stopper 42, the tip end portion of the blade 40a provided on the first filter portion 34 is located at a position off the lint capturing surface.

  The control means 43 controls the driving of the driving means 10, the blower 15, etc., supplies the drying air while stirring the laundry in the drum 4, performs the drying operation, controls the driving of the motor 44, and dries The lint removing device 38 of the filter device 31 is operated.

  About the clothes dryer comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. In the drying operation, the motor that is the driving unit 10 is driven at a predetermined number of revolutions by the control unit 43 to stir the wet laundry in the drum 4 and the drying air is blown to the circulation air passage 17 by the blower 15. Then, the drying air that has passed through the heating means 16 and has been heated to a predetermined temperature reaches the drum 4 from the air supply port 18. The drying air that has reached the inside of the drum 4 comes into contact with the wet laundry that is being stirred, dehydrates the laundry, dries it, and then contains lint generated from the laundry, and includes the lint generated from the laundry and the outer tub 1 Enters the circulation air passage 17 through the exhaust port 19 provided in

  The drying air passes through the circulating air path 17 a, is dehumidified by the cooling water in the heat exchanger 21, and then the lint is removed from the drying air by the drying filter device 31 before reaching the blower 15. The cooled dry drying air is heated by the heating means 16, and the drying of the laundry progresses with the drying air that is circulated by the dry high-temperature drying air being blown into the drum 4. The lint in the working air is also captured by the dry filter device 31.

  The control means 43 operates the lint removing device 38 provided in the dry filter device 31 with the start of the drying operation. The lint removing device 38 includes a rotation shaft 39 provided in parallel with the lint capturing surfaces of the first filter portion 34 and the second filter portion 36, and the first filter portion 34 and the second filter portion from the rotation shaft 39. 36 have thin blades 40a and 40b extending toward the lint capturing surface 36 and a motor 44 for driving the rotary shaft 39. The blades 40a and 40b are rotated around the rotary shaft 39 by the motor 44. The lint captured by the lint capturing surfaces of the first filter portion 34 and the second filter portion 36 is scraped off.

  When the drying operation starts, the lint removing device 38 intermittently performs an operation of driving for a predetermined time T1 as shown in FIG. 11, and operates as shown in FIGS. That is, the blade 40a of the lint removing device 38 rotates in the direction of the arrow A from the stop position in FIG. When the blade 40a comes into contact with the stopper 42, the blade 40a rotates in the opposite direction in the direction indicated by the arrow B from the position (b), and rotates approximately once to the position (c) where the blade 40a comes into contact with the opposite side of the stopper 42. Furthermore, it is rotated in the direction of the arrow A, returns to the original position (a) and stops, and one operation is completed. The blade 40b and the opening / closing body 41 are also interlocked with this.

  This operation is performed every time the lint removing device 38 is driven, and FIG. 13 is a time chart showing one operation. In addition, although one operation is driven approximately twice, the rotational drive amount and the drive speed are respectively set optimally so that the captured lint can be scraped accurately.

Since the first filter unit 34 scrapes lint on the lint capturing surface by driving the blade 40a, the first filter unit 34 can avoid an increase in pressure loss caused by lint capturing. Since the lint scraped off from the first filter unit 34 moves to the second ventilation unit 35 by the drying air, it can be prevented from being captured again by the first filter unit 34.

  Therefore, since it is possible to prevent an increase in pressure loss due to the capture of lint and the re-capture of lint that has been scraped off, the first filter unit 34 captures the lint from the passing drying air and performs good drying. Ventilation of working air can be ensured.

  Then, at the start of the drying operation, the temperature of the drying air does not increase so much that the lint can be easily scraped with a smaller air flow rate than during the rated operation without adversely affecting the drying of the clothes. In addition, by driving the lint removing device 38 at the start of the drying operation, it is possible to perform drying with a large amount of drying air with a small pressure loss due to lint capture from the initial stage of the drying operation, and to increase the drying time. The accompanying increase in power consumption is prevented, and ecological drying operation is possible in a short time.

  FIG. 14 shows another example of the present embodiment. The control means 43 is configured to blow the blowing air at the start of the drying operation by the blower 15 with a smaller blowing amount than at the rated operation. That is, for a predetermined time T2 after the start of the drying operation, the air flow of the drying air is set to a lower air flow rate than that during the rated operation, so that the lint can move the dynamic air pressure of the drying air The force pressed against the lint capturing surface due to the pressure difference can be weakened, the lint removal device 38 can be easily scraped off, and a part of the drying air introduced into the first ventilation portion 33 can open the opening 37. It is possible to ensure a flow through to the second ventilation portion 35.

  Further, the trapped lint is surely scraped by the force required to be scraped off from the first filter part 34 and the second filter part 36 from the motor 44 via the blades 40a and 40b. It is possible to reduce the ventilation resistance of the drying air passing through the first filter section 34, and to reliably prevent an increase in pressure loss.

  In addition, the lint captured by the second filter unit 36 and scraped from the first filter unit 34 is also scraped from the second filter unit 36 by the blade 40b, and thus passes through the second filter unit 36. The ventilation resistance of the drying air can be reduced, and the flow of the drying air from the first ventilation portion 33 to the second ventilation portion 35 can be maintained well.

  Further, even when a large amount of lint scraped off by the first filter part 34 stays in the second ventilation part 35, the lint in the second ventilation part 35 can be stirred by the blade 40b. The lint sucked to the lint capturing surface of the second filter portion 36 by the flow of the drying air can be held by the entire second ventilation portion 35.

  An opening 37 is provided adjacent to the side of the first filter portion 34 provided in the first ventilation portion 33. In the first filter unit 34, pressure loss occurs due to the captured lint. Therefore, all the drying air introduced into the first ventilation unit 33 passes through the first filter unit 34 and is used as a drying filter. Instead of leaving the apparatus 31, a part of the drying air is guided to the second ventilation part 35 through the opening 37.

  At that time, the drying air that could not pass through the first filter portion 34 once collides with the first filter portion 34, and then forms a flow along the first filter portion 34. For this reason, by providing an opening 37 for guiding the drying air to the second ventilation portion 35 adjacent to the side of the first filter portion 34, the first filter portion 34 could not be passed. It is possible to create a state in which the drying air flows along the first filter portion 34 from the opening portion 37 to the second ventilation portion 35.

  As a result, it is possible to generate a flow for guiding the lint scraped off to the second ventilation portion 35 along the first filter portion 34 from which the lint is removed. The taken lint can be quickly moved to the second ventilation portion 35, and re-capture by the first filter portion 34 can be reliably prevented.

  The drying filter device includes an opening / closing body 41 that opens and closes an opening 37 through which drying air flows from the first ventilation portion 33 to the second ventilation portion 35, and is configured integrally with the lint removal device 38. The opening / closing body 41 is integrally formed between the blade 40a and the blade 40b, and the opening portion 37 is interlocked with the operation of the lint removing device 38 when the lint removing device 38 is driven or for a predetermined time after driving. To open. Accordingly, the lint scraping in the first filter unit 34 and the lint scraped off move to the second ventilation unit 35 by the drying air introduced into the first ventilation unit 33. The lint scraped off by the first filter unit 34 is immediately moved to the second ventilation unit 35 to reattach the lint on the first filter unit 34. Can be prevented.

  In addition, since the opening 37 is closed except when the lint scraped off by the first filter unit 34 is moved to the second ventilation unit 35, a new lint is captured by the second filter unit 36. The pressure loss can be kept low. Therefore, when the opening 37 is opened, the drying air introduced into the first ventilation portion 33 can be easily flowed to the second ventilation portion 35 and is scraped off by the lint removal device 38. The lint of the first filter part 34 can be easily moved to the second ventilation part 35 by the drying air.

  Therefore, the amount of inflow of drying air from the first ventilation portion 33 to the second ventilation portion 35 due to an increase in the pressure loss of the second filter portion 36 even if the drying operation is repeated for a longer time or more times. Can be reduced. And even if the lint scraped off by the first filter unit 34 is accumulated for a longer time or more times of the drying operation, the movement to the second ventilation unit 35 riding on the flow of the drying air is maintained. Therefore, the first filter unit 34 can ensure good ventilation of the drying air while capturing lint from the drying air.

  The position when the operation of the blade 40a provided in the first filter unit 34 is stopped is set so as to be substantially parallel to the flow direction of the drying air introduced into the first ventilation unit 33. It is possible to prevent the flow of drying air from being hindered to increase the pressure loss. Further, since the aerodynamic resistance that the blade 40a receives from the drying air when the operation of the blade 40a is stopped can be reduced, the rotational torque required when the blade 40a starts to move from the operation stop state can be reduced.

  Further, the operation stop position of the rotatable blade 40 a that scrapes the lint captured by the first filter unit 34 is set to a position facing the opened opening 37. When the operation of the blade 40 a is stopped, the opening 37 is closed, and the opening / closing body 41 is in a position to close the opening 37. Therefore, the opening / closing body 41 that closes the opening 37 and the blade 40a can be made into a continuous integrated structure, and the lint scraped off from the lint capturing surface of the first filter portion 34 can be moved to the second ventilation portion 35. A suitable structure can be obtained, and one end of the blade 40a can be connected to the opening / closing body 41 to be firmly constructed.

  Further, the position of the blade 40 a provided in the first filter portion 34 when the operation is stopped is set at a substantially intermediate portion facing the opened opening 37. Thereby, even after the blade 40a is rotated in either the clockwise direction (arrow B direction) or the counterclockwise direction (arrow B direction), the second ventilation portion 35 passes through the opening 37 from the first ventilation portion 33. The air for drying toward the front flows in a balanced manner on the front and back surfaces of the blade 40a, and the lint at the tip of the blade 40a can be removed with substantially the same force by the drying air flowing on both the front and back surfaces.

  As shown in FIG. 9, the position when the operation of the blade 40b provided in the second ventilation portion 35 is stopped is set at a position where the opened opening 37 is removed. When the operation of the blade 40b is stopped, it is not necessary to flow the drying air to the second ventilation portion 35, and the opening portion 37 is closed. When the operation of the blade 40b is stopped, the blade 40b is at a position facing the opening portion 37. The opening / closing body 41 is positioned.

  Therefore, when the lint scraped off by the first filter part 34 by opening the opening 37 moves to the second ventilation part 35, the blade 40b of the second filter part 36 is immediately stirred. Therefore, the air can be prevented from being caught on the lint capturing surface of the second filter unit 36 by riding on the flow of the drying air, and the drying air from the first ventilation unit 33 to the second ventilation unit 35 can be prevented. The flow can be maintained well.

  The blades 40 b provided in the second ventilation portion 35 are formed on both sides of the peripheral surface with respect to the axis of the rotation shaft 39. A notch 40c is provided at the edge of the blade 40b facing the lint capturing surface of the second filter portion 36, and the positions of the notches 40c provided on both sides of the rotating shaft 39 are shifted from each other in the direction of the rotating shaft 39. ing. That is, one blade 40b is provided at the position of the notch 40c on the opposite side.

  As a result, even if the lint is caught between the leading edge of the blade 40b in the lint capturing surface direction and the lint capturing surface or the like, a part of the lint is pushed out toward the notch 40c. It is difficult to cause the lock and the operation can be performed smoothly. In addition, even when a slender foreign matter such as hair is carried to the dry filter device 31 together with lint by the drying air, the cutout 40c can prevent the blade 40b from being entangled and capture the lint of the second filter unit 36. The lint captured on the surface can be surely scraped off.

  FIG. 15 shows another example of the present embodiment. The control means 43 drives the lint removing device 38 after a predetermined time T3 from the start of the drying operation, and operates the opening / closing body 41 to open the opening 37. Since lint is generated from the laundry after the laundry starts to dry to some extent, the amount of lint scraped off by the lint removing device 38 in the first filter unit 34 exceeds the predetermined amount after the drying operation is started. After a predetermined time.

  In order to make the lint of the first filter part 34 scraped off by the lint removal device 38 easily moved to the second ventilation part 35 by the drying air introduced into the first ventilation part 33, It is effective to suppress an increase in pressure loss due to lint capture at the filter portion 36 of the second filter. The opening 37 is closed until the amount of lint captured by the first filter portion 34 exceeds a predetermined amount. It is desirable to suppress lint capture at the filter unit 36. Thereby, the lint of the first filter unit 34 scraped off by the lint removing device 38 can be easily moved to the second ventilation unit 35 by the drying air introduced into the first ventilation unit 33. .

  The opening 37 is formed in a substantially semicircular shape having substantially the same shape as the lint capturing surface bulged in an arc shape downstream of the first filter portion 34 and the second filter portion 36. Thereby, the shape of the opening / closing body 41 can be made into a substantially semicircular shape, and the opening area when the opening 37 is opened by the opening / closing body 41 can be increased, so that the opening / closing body 41 is introduced into the first ventilation portion 33. A part of the drying air easily flows to the second ventilation portion 35, and the lint scraped off by the first filter portion 34 can be easily moved to the second ventilation portion 35.

The blades 40a and 40b disposed in the first filter portion 34 and the second filter portion 36 are formed by shifting by a predetermined angle about the rotation shaft 39, so that the blade 40a and 40b are viewed from a horizontal viewpoint on the rotation shaft 39. Then, after the tip of the blade 40b of the second filter part 36 moves with rotation, it is possible to realize a movement such that the tip of the blade 40a of the first filter part 34 follows.

  Accordingly, lint is scraped off by the lint removing device 38 in the second filter unit 36, pressure loss due to lint capture is reduced, and the drying air introduced into the first ventilation unit 33 is second Immediately after making it easy to move to the ventilation unit 35, scraping of lint in the first filter unit 34 and lint scraped off by the lint removing device 38 are moved to the second ventilation unit 35 together with drying air. Can do.

  Further, the first ventilation portion 33 is provided with a stopper 42 configured as blade position detecting means for setting the reference position of the blade 40a to a position where the rotation of the blade 40a is restricted. The stopper 42 is set so that the operation stop position of the blade 40 a is substantially parallel to the flow direction of the drying air introduced into the first filter portion 34. By rotating the rotary shaft 39 by the motor 44, the rotation is restricted by contacting the stopper 42, and the blade 40a is moved to the operation stop position by a predetermined reverse rotation amount. That is, the position of the blade 40a is detected by restricting the rotation of the blade 40a at a predetermined position by the stopper 42.

  As a result, the reference position of the blade 40a can be set to a position where the rotation is restricted by the stopper 42, and a new device or the like is required to determine the reference position of the blade 40a or to grasp the current position of the blade 40a. The reference position of the blade 40a can be set with a simple configuration. Further, even if the blade 40a is once removed from the lint removing device 38, or the blade 40a rotates unexpectedly due to an external force other than the motor 44, the reference position of the blade 40a can be easily set. The rotation sequence can be reliably executed.

  Further, the position of the blade 40a provided in the first filter portion 34 when the rotation of the blade 40a is restricted by the stopper 42 is other than the lint capturing surface of the first filter portion 34 as shown in FIG. It is set. If there is a lint capturing surface in the vicinity of the rotation restricting portion, a portion where the lint is not sufficiently scraped due to the influence of the rotation restriction is generated. Further, since the lint scraping force of the blade 40a tends to be insufficient, lint is likely to be accumulated more than other portions, and this accumulated lint is caught between the blade 40a and the lint capturing surface, 40a may be locked. Therefore, by setting the position where the rotation of the blade 40a is restricted by the stopper 42 other than the lint capturing surface of the first filter portion 34, the accumulated lint is caught between the blade and the lint capturing surface. It is possible to prevent the rotation of the blade from being locked.

  The dry filter device 31 is detachable from the main body of the clothes dryer, and is separated from the motor 44 provided in the housing 2 when the dry filter device 31 is taken out. When the dry filter device 31 is mounted at a predetermined position on the main body, the motor 44 provided in the housing 2 meshes with the gear, and the rotation of the motor 44 is transmitted and driven. It is detachable from the upper surface of the housing 2.

When the lint accumulated in the dry filter device 31 is discarded, the rotating shaft 39 of the lint removing device 38 separated from the motor 44 rotates, and the positions of the blades 40a and 40b and the opening / closing body 41 change. The dry filter device 31 is provided with a stopper 42 that restricts the rotation of the blade 40a. When the motor 44 mounted on the main body and the gear 44 meshes with the gear 44, the motor 44 rotates. Driven by being transmitted to the lint removal device 38, it rotates until it abuts against the stopper 42 regardless of the amount of rotation up to the stopper 42. Thereafter, the blade 40a is moved to the operation stop position by the set predetermined reverse rotation amount, and the predetermined rotation operation can be performed.

  Thus, the motor 44 can be cut off from the dry filter device 31 to reduce the weight, and when the user maintains the dry filter device 31 such as when the accumulated lint is discarded, it can be easily removed from the body of the clothes dryer. A motor 44 for driving the lint removing device 38 can be installed in the body of the clothes dryer, which can be taken out and the space can be secured relatively easily, so that a motor with a higher output can be used. The removal ability is improved.

(Embodiment 2)
FIG. 16 is a time chart showing the operation of the clothes dryer according to the second embodiment of the present invention. The feature of this embodiment is that the lint removing device 38 is driven after the end of the drying operation, and the air blowing amount of the blower 15 is set to be smaller than the rated amount. In addition, the same code | symbol is attached | subjected about the structure which carries out the same effect | action as Embodiment 1, and the thing of Embodiment 1 is used for concrete description.

  According to the above configuration, since the drying operation is completed, lint can be easily scraped with a smaller air flow rate than that during the rated operation without adversely affecting the drying of the clothes. In addition, by driving the lint removing device 38 at the end of the drying operation, when performing the next drying operation, it is possible to perform drying with a large amount of drying air with little pressure loss due to lint capture from the initial stage of the drying operation. In addition, it is possible to prevent an increase in the amount of electric power used as the drying time increases. Further, even if the blower 15 is set to a smaller amount than the rated amount and blows, since the drying operation has been completed, the captured lint can be easily removed without adversely affecting clothes drying. .

(Embodiment 3)
FIG. 17 is a sectional view of a clothes dryer according to the third embodiment of the present invention, and FIG. 18 is a time chart showing the operation of the clothes dryer. The feature of this embodiment is that water is stored in the lower part of the drum 4 so that washing can be performed, and the lint removing device 38 is driven during the dehydrating operation before the drying operation. In addition, the same code | symbol is attached | subjected about the structure which carries out the same effect | action as Embodiment 1, and the thing of Embodiment 1 is used for concrete description.

  The outer tub 1 stores water in the lower part of the drum 4 so that it can be washed, and the drum 4 is disposed inside. The washing water flows from the water supply channel 22 to the water supply port 23 provided in the upper part on the inlet 6 side, and is supplied into the drum 4. During washing, the laundry 5 is lifted to the vicinity of the top of the drum 4 by the stirring baffle 9 provided on the peripheral wall 7 of the drum 4 and is washed by the action of tapping by repeating tumbling that is knocked down to the bottom. Remove dirt. After the washing is finished, water is drained from the drain port 24 provided at the bottom of the outer tub 1 through the drain valve 25, and then the drum 4 is rotated at a high speed to perform a dehydration operation.

  The drying operation performed after the dehydration operation is the same as that in the first embodiment, and the specific description is the same as that in the first embodiment.

  According to the above configuration, it is possible to easily scrape lint with a smaller air flow rate than during the rated operation without adversely affecting the drying of the clothes during the dehydrating operation before the drying operation. Also, by driving the lint removal device before the drying operation is started, it is possible to perform drying with a large amount of drying air with a small pressure loss due to lint capture from the initial stage of the drying operation, and a long drying time. It is possible to prevent an increase in the amount of power used due to the conversion.

In each embodiment of the present invention, the heat exchanger 21 is used as a dehumidifying means for drying air to be blown into the drum 4, and the drying air is cooled and dehumidified using cooling water.
It is not restricted to this, The air cooling type using cooling air may be sufficient, and both of these may be sufficient. Further, a configuration may be used in which the drying air is not dehumidified and the heated warm air is blown into the drum 4 to be dried.

  In addition, the drying air blown into the drum 4 is heated by a heating means such as a heater to dry the air that has been cooled and dehumidified by a heat exchanger so as to be dry hot air, and a refrigerant is circulated through the evaporator and the condenser. The heat pump device can be configured to dehumidify and heat the drying air.

  A general heat pump device includes a compressor that compresses refrigerant, a radiator that dissipates the heat of the refrigerant compressed by the compressor, a throttle means that depressurizes the pressure of the high-pressure refrigerant, and the pressure is reduced to a low pressure. A heat absorber that takes heat from the surroundings is connected by a pipe, and the drying air moistened by the heat absorber is cooled and dehumidified, and the dried drying air that has been cooled and dehumidified is heated by a radiator to enter the drum 4. It is the structure which ventilates.

  Further, a motor 44 for driving the rotary shaft 39 of the lint removing device 38 is provided on the main body side of the clothes dryer, and when the detachable dry filter device 31 is attached to a predetermined position of the main body, Although the configuration is such that the motor 44 provided and the gear are engaged and linked, the motor 44 can be provided integrally with the dry filter device 31. In this case, the motor 44 is directly connected to the rotating shaft 39, and the operation of the lint removing device 38 can be made smooth.

  Note that the present invention can be implemented by combining some of the structures described in the embodiment.

  As described above, the clothes dryer according to the present invention can suppress the decrease in the flow rate of the drying air due to the lint capture in the filter portion that proceeds during the drying operation, and can prevent the time required for drying from becoming long. So it is useful as a clothes dryer.

4 Drum 15 Blower 17 Circulating Air Path 18 Air Supply Port 19 Exhaust Port 31 Drying Filter Device 32 Introduction Portion 33 First Ventilation Portion 34 First Filter Portion 35 Second Ventilation Portion 36 Second Filter Portion 37 Opening Portion 38 Lint removal device 39 Rotating shaft 40a Blade 40b Blade 41 Opening and closing body 43 Control means 44 Motor

Claims (8)

A drum for storing laundry; an air supply port for introducing drying air into the drum; an exhaust port for discharging drying air from the drum; and an air supply port for drying air discharged from the exhaust port A circulation air passage that circulates into the drum from above, a blower that blows air to the circulation air passage, heating means that heats drying air, and drying air that is disposed in the circulation air passage and is generated from the laundry A dry filter device that captures lint, wherein the dry filter device includes an introduction unit that introduces drying air, a first filter unit that captures lint from the drying air introduced from the introduction unit, and A second filter unit provided on a side of the first filter unit; and a lint removing device that scrapes lint captured by the first and second filter units; and scraped by the lint removing device. Lint Clothes dryer adapted to move toward the filter unit. The drying filter device has a first ventilation section that has a first filter section and allows the drying air introduced from the introduction section to pass therethrough, and a second filter section that is provided on the side of the first ventilation section. The second ventilation section and an opening through which a part of the drying air introduced into the first ventilation section flows to the second ventilation section, and the lint scraped off by the lint removing device is the first ventilation section. The clothes dryer according to claim 1, wherein the clothes dryer is moved to the second ventilation portion by drying air introduced into the ventilation portion. The drying filter device is provided with an opening on a side of the first ventilation portion so that a part of the drying air introduced into the first ventilation portion flows from the opening to the second ventilation portion. The clothes dryer according to claim 1 or 2. The clothes drying machine according to claim 3, wherein the drying filter device is provided with an opening adjacent to a side of the first filter part provided in the first ventilation part. The drying filter device includes an opening through which drying air flows from the first ventilation section to the second ventilation section, and an opening / closing body that opens and closes the opening, and is predetermined when the lint removal apparatus is driven or after being driven. The clothes dryer according to any one of claims 2 to 4, wherein the opening is opened for a period of time. The lint removing device includes a rotation shaft provided in parallel with the lint capturing surfaces of the first filter unit and the second filter unit, and a lint capturing surface of the first filter unit and the second filter unit from the rotation shaft. A thin plate-like blade extending toward the surface and a motor for driving the rotating shaft, the blade being moved by the motor and being captured by the first filter portion and the second filter portion. The clothes dryer according to any one of claims 1 to 5, wherein the clothes are scraped off. 7. The lint removal apparatus according to claim 6, wherein a position when the operation of the blade provided in the first filter unit is stopped is set to be substantially parallel to a flow direction of the drying air introduced into the first ventilation unit. Clothes dryer. 8. The dry filter device according to claim 1, wherein the dry filter device is detachably attached to the main body of the clothes dryer, and the lint removing device is driven in association with a motor provided on the main body. Clothes dryer.

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