JP2014014584A - Clothes dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clothes dryer capable of saving energy and shortening the time of drying.SOLUTION: The clothes dryer includes: a drum 4 supported by a horizontal or inclined rotation axis for housing laundry; driving means 10 for rotatively drive the drum 4; a circulation air tunnel 17 for recirculating drying air discharged from the drum 4 into the drum 4; a blow port 18 connected to the circulation air tunnel 17 for blowing the drying air from the side of a bottom part of the drum 4; and a ventilation body 26 provided on an inner bottom part of the drum 4 and having a plurality of ventilation holes 27. The ventilation hole 27 is expanded in a taper shape from the side of the inner bottom part of the drum 4 toward the side of an outer bottom. The inner wall of the ventilation hole 27 is configured to have an inclination angle corresponding to a blowing direction of the drying air from the blow port 18, when at least a part faces the blow port 18 accompanied by the rotation of the drum 4.

Description

  The present invention relates to a washing dryer and a clothes dryer for drying textiles such as clothes.

  In a conventional washing and drying machine, a ventilation body is provided on the bottom surface of a drum that accommodates an object to be dried (see, for example, Patent Documents 1 and 2). FIG. 15 is a front view showing the drum bottom of the conventional clothes dryer shown in Patent Document 1, and FIG. 16 is a side sectional view showing the drum bottom of the conventional clothes dryer. A drum 14 for storing the laundry of a conventional drum-type washing and drying machine, an outer tub 101 in which the drum 4 is rotatably included, and a driving means 110 for rotationally driving the drum 104 are provided. The attached drum fixing member 124 is linked to the driving means 110. The drum fixing member 124 includes a bearing portion 124a directly linked to the driving unit 110, an annular portion 124b linked to the drum 104, and a plurality of arm portions 124c formed radially from the bearing portion 124a toward the annular portion 124b. ing. A plurality of ventilation portions 125 formed on the outer bottom portion of the drum 104 by a plurality of arm portions 124c, and a ventilation body that covers the ventilation portions 125 from the inside of the drum 104 and has ventilation holes 127 that open in the same direction as the rotation shaft 111. 126, and the outer tub 101 has a blower port 118 for supplying drying air into the drum 104.

  In order to effectively introduce the drying air into the drum 104, a plurality of substantially circular convex ribs 120 projecting inward from the wall surface of the outer tub 101 and a plurality of ribs formed on the outer bottom surface of the annular portion 124b. A non-contact seal portion is configured in combination with the substantially circular concave ribs 121. In addition, the said convex rib 120 and the concave shape 121 are comprised so that a trough part and a peak part may be stuck in non-contact.

  FIG. 17 is a cross-sectional view of a conventional clothes dryer shown in Patent Document 2, and FIG. 18 is a rear perspective view showing a part of the conventional clothes dryer. On the bottom surface of the drum 204 of the clothes dryer of Patent Document 2, a back filter 226 is provided as a ventilation body that rotates as the drum 204 rotates. The air blowing port 218 is provided in the upper part of the outer tank 201. The circulation air passage 217 is connected downward toward the air outlet 218 so that the air blown into the outer tub 201 faces downward. Further, the air holes 227 are arranged so as to face downward when the air holes 227 are opposed to the air outlets 218 so that the drying air sent from the air outlets 218 is sent downward in the drum 204. By forming the direction of the drying air blown from the blower opening 218 and the ventilation hole 227 in the same direction, the drying effect is enhanced so that the drying air is sufficiently applied to the laundry.

JP 2006-81574 A JP 2010-187862 A

  However, in either configuration, when the drying air passes through the ventilation body, there is a problem that the pressure loss of the drying air in the ventilation hole is large and the drying effect is reduced.

SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a clothes dryer that can reduce the pressure loss when the drying air flows to save energy and shorten the drying time. And

In order to solve the conventional problems, the clothes dryer of the present invention is:
A drum which is supported by a horizontal or inclined rotating shaft and accommodates laundry;
Drive means for rotationally driving the drum;
An air path leading the drying air to the drum;
A blower port connected to the air path and sending out drying air from the bottom side of the drum;
A blowing means provided in the air passage, for blowing drying air to the drum;
A ventilator provided at the inner bottom of the drum and having a plurality of vent holes;
The vent hole expands in a tapered shape from the inside of the drum toward the blower port side,
The inclination angle of the inner wall of the ventilation hole is configured so that at least a part thereof coincides with the blowing direction of the drying air from the blower port when facing the blower port as the drum rotates. It is.

  Since the clothes dryer of the present invention can send more drying air to the drum, the drying time can be shortened and a drying operation with high energy saving can be performed.

Sectional drawing of the clothes dryer in embodiment of this invention Front view of ventilator of the clothes dryer AA sectional view of the clothes dryer in FIG. Rear view of ventilator of the clothes dryer Exploded view of drum, ventilator and drum fixing member of the clothes dryer Front view of drum inside the clothes dryer BB sectional view of the clothes dryer in FIG. Ventilation hole enlarged view of the clothes dryer Front view of partly missing inside the drum of the clothes dryer Enlarged view of convex and concave ribs of the clothes dryer Front view of drum inside with laundry in front of the air outlet of the clothes dryer CC sectional view of FIG. 6 with the laundry in front of the air outlet of the clothes dryer D enlarged view of FIG. 12 with the laundry in front of the air outlet of the clothes dryer Changes in the direction of blowing air through the air in the clothes dryer as the drum rotates Front view showing the drum bottom of a conventional clothes dryer Side sectional view showing the drum bottom of the clothes dryer Cross section of the clothes dryer Rear perspective view showing a part of the clothes dryer

The clothes dryer of the present invention
A drum which is supported by a horizontal or inclined rotating shaft and accommodates laundry;
Drive means for rotationally driving the drum;
An air path leading the drying air to the drum;
A blower port that is connected to the air path and sends out drying air at a predetermined angle from the bottom side of the drum,
A blowing means provided in the air passage, for blowing drying air to the drum;
A ventilator provided at the inner bottom of the drum and having a plurality of vent holes;
The vent hole expands in a tapered shape from the inside of the drum toward the blower port side,
The inclination angle of the inner wall of the ventilation hole is configured so that at least a part thereof coincides with the blowing direction of the drying air from the blower port when facing the blower port as the drum rotates. It is.

  As a result, when the drying air sent out from the blower port enters the ventilation hole, the ventilation hole expands with a reverse taper from the inner bottom side of the drum toward the outer bottom part facing the blower port. , Drying air easily flows into the ventilation hole. In addition, since the drying air sent out from the blowing port can enter and pass through the ventilation hole without changing the flow direction, the pressure loss of the drying air until reaching the drum from the blowing port can be kept low. As a result, more energy for drying can be sent to the drum while the energy used for blowing is the same, and energy-saving clothing drying can be achieved.

The clothes dryer of the present invention
A drum fixing member having a plurality of arms formed radially from the center and attached to the outer bottom of the drum;
A plurality of ventilation portions formed at the bottom of the drum and separated by the arm portions, and the ventilation holes provided in each of the ventilation portions are tapered in the same direction.

  As a result, when the ventilation portion faces the air outlet, the flow direction of the drying air sent out from the air outlet and the opening direction of the air ventilation hole are substantially the same direction, but the opening direction changes with the drum rotation. Therefore, the direction of the blowing air that is sent out toward the laundry inside the drum also slightly changes. Therefore, compared with the case where drying air is always sent in the same direction with respect to the laundry, the drying air hits the laundry more evenly, and thus drying of the laundry is promoted. In addition, since the direction of the flow of the drying air sent out from the air blowing port and the opening direction of the ventilation hole when facing the air blowing port are substantially the same direction, the pressure loss when the drying air passes through the ventilation hole is also It can be kept low.

  Moreover, the said ventilation hole of the clothes dryer of this invention comprises a taper shape in one direction so that the outer bottom part side of the said drum may become long shape.

  This makes it possible to reduce the distance between adjacent ventilation holes necessary for maintaining the strength of the ventilation body, as compared with the case where all the directions of the ventilation holes are tapered, and the number of ventilation holes is increased. Ventilation of working air can be accelerated.

  Further, the ventilation hole of the clothes dryer of the present invention has an angle inclined from the inner bottom side of the drum to the outer bottom side at the upper part of the ventilation hole, and an outer side from the inner bottom side of the drum at the lower part of the ventilation hole. The angle inclined toward the bottom side is different.

  This makes it possible to reduce the distance between adjacent ventilation holes necessary for maintaining the strength of the ventilation body, and to increase the number of ventilation holes, as compared with the case where all directions of the ventilation holes are tapered. Ventilation of working air can be accelerated.

  Further, the ventilation hole of the clothes dryer of the present invention has an angle inclined from the inner bottom side of the drum to the outer bottom side at the upper part of the ventilation hole, and an outer side from the inner bottom side of the drum at the lower part of the ventilation hole. The angle inclined toward the bottom side is different.

  This makes it possible to reduce the distance between adjacent ventilation holes necessary for maintaining the strength of the ventilation body, and to increase the number of ventilation holes, as compared with the case where all directions of the ventilation holes are tapered. Ventilation of working air can be accelerated.

Further, the circulation wind tunnel of the clothes dryer of the present invention is configured to connect to the air blowing port from the upper side to the lower side, and the ventilation hole when facing the air blowing port with the rotation of the drum is configured to have the ventilation hole. The upper inner wall of the hole is inclined upward from the lower inner wall.

  Thereby, since the upper part of the ventilation hole is made upward according to the wind from a ventilation opening, the pressure loss at the time of the air for drying passes a ventilation opening can be suppressed low. In addition, since the lower part of the ventilation holes is shallower than the upper part, the distance between adjacent ventilation holes necessary to maintain the strength of the ventilation body can be reduced, and the number of ventilation holes can be increased. Air ventilation can be promoted.

  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 an embodiment of the present invention, FIG. 2 is a front view of a ventilator of the clothes dryer, and FIG. 3 is a cross-sectional view of FIG. 4 is a rear view of the ventilator of the clothes dryer, FIG. 5 is an exploded view of the drum, ventilator, and drum fixing member of the clothes dryer, and FIG. 6 is a front view of the interior of the drum of the clothes dryer. 7 is a cross-sectional view of the clothes dryer taken along line B-B of FIG. 6, FIG. 8 is an enlarged view of a vent hole of the clothes dryer, and FIG. 9 is a partially broken front view inside the drum of the clothes dryer. 10 is an enlarged view of convex ribs and concave ribs of the clothes dryer, FIG. 11 is a front view of the inside of the drum with the laundry in front of the air outlet of the clothes dryer, and FIG. 12 is the clothes dryer. 6 is a cross-sectional view taken along the line CC in FIG. 6 in a state where the laundry is present in front of the air outlet of the machine, and FIG. 13 is an enlarged view of D in FIG. 12 where the laundry is present in front of the air outlet of the clothes dryer. , 14, ventilation holes blowout direction changing view of the drying air caused by the drum rotation of the clothes dryer, a. Components having the same configuration as the conventional example will be described using the same reference numerals.

  In FIG. 1, an outer tub 1 is elastically supported by a plurality of elastic mechanisms 3 and suspension mechanisms (not shown) inside a housing 2 of a clothes dryer. The drum 4 has a loading 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 rotatably provided on a rotating shaft 11 and stores the laundry 5. The drum 4 has a plurality of discharge holes 8 in the peripheral wall 7, and the laundry 5 in the drum 4 has the laundry 5. Is provided with a stirring baffle 9 for efficiently lifting. The outer tub 1, the drum 4, and the rotating shaft 11 that rotatably supports the drum 4 are arranged to be inclined upward by an angle θ, for example, 20 ° with respect to the horizontal. In the present embodiment, the drum 4 is inclined, but may be horizontally arranged.

  Driving means 10 is provided outside the outer tub 1, and the drum 4 is rotated forward and backward by the rotational driving of the driving means 10. The drum 4 is linked to the driving means 10 by a drum fixing member 24 attached to the outer bottom portion. The drum fixing member 24 includes a bearing portion 24a directly linked to the driving means 10, an annular portion 24b linked to the drum 4, and a plurality of arm portions 24c formed radially from the bearing portion 24a toward the annular portion 24b. Yes. Similarly to the drum fixing member 24, the drum 4 is provided with a plurality of arm portions 4 a at positions facing the arm portion 24 c of the drum fixing member 24. The arm portion 4 a is formed radially in the same direction as the arm portion 24 c of the drum fixing member 24.

  A front surface of the housing 2 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 2 by a packing 14 while ensuring an airtight structure.

  A circulation wind tunnel 17 (air channel) for circulating the drying air discharged from the drum 4 during the drying process into the drum 4 again is provided above the outer tub 1. The air blowing means 15 for supplying the drying air into the drum 4 is provided in a substantially upper part of the housing 2 and in the circulation wind tunnel 17.

  A cooling water supply port 22 for supplying cooling water to dehumidify the drying air and a heat exchanger 23 are provided upstream of the blowing means 15 in the circulation wind tunnel 17. The drying air that has become wet due to contact with the laundry 5 is cooled by the heat exchanger 23 and dehumidified. The cooling water and the dehumidified water are discharged out of the housing 2. A drying filter device 29 that removes lint scattered from the laundry 5 and carried on the drying air is provided upstream of the blower 15 and the heat exchanger 23. The heating means 16 for heating the drying air is provided in the circulation wind tunnel 17 on the downstream side of the air blowing means 15. The heat exchanger 23 is a water-cooled dehumidifying means, but it may be an air-cooled type or a heat pump type. In the case of the heat pump type, the heating means 16 is arranged upstream of the air blowing means 15 and downstream of the heat exchanger 23, and the heat exchanger 23 and the heating means 16 are connected by a refrigerant pipe. Good.

  The downstream side of the circulation wind tunnel 17 communicates with a blower opening 18 provided at the bottom of the inner cylinder of the outer tub 1 so as to avoid the rotating shaft 11, and the drying air is sent out from the bottom side of the drum 4. . Further, the circulation wind tunnel 17 is connected to the air blowing port 18 so as to be directed downward from above. Therefore, the drying air is sent to the drum 4 from the bottom side of the drum 4 downward from the air blowing port 18. The upstream side of the circulation wind tunnel 17 communicates with an exhaust port 19 provided in the outer tub 1, and a dry filter device 29 is provided immediately after the exhaust port 19.

  Between the blower opening 18 and the inside of the drum 4, there are a ventilation body 26 and a plurality of ventilation sections 25 in order from the inside of the drum 4. The ventilation body 26 is sandwiched from the front and back by the arm portion 4a of the drum 4 and the arm portion 24c of the drum fixing member 24, and is fixed. The ventilation part 25 is a space partitioned by the ventilation body 26, the outer tub 1, and the arm part 24 c of the drum fixing member 24. The several ventilation part 25 is connected by providing the air path 28 which accelerates | stimulates each ventilation. The air passage 28 is configured by providing a plurality of openings 26a in the air passage body 26 between the air passage body 26 and the arm portion 24c.

  The ventilation body 26 is provided with a large number of ventilation holes 27 that connect the drum 4 and the ventilation section 25. The ventilation hole 27 is configured to have an inverse taper and expand from the inner bottom side to the outer bottom side of the drum 4. The inner wall of the ventilation hole 27 is provided so that the outer bottom side of the drum 4 is a track elliptical long shape, and the inner bottom side of the drum 4 is a substantially round shape. The ventilation hole 27 is inclined at the upper part of the ventilation hole 27 from the inner bottom side of the drum 4 to the outer bottom part side, and is inclined at the lower part of the ventilation hole 27 from the inner bottom side of the drum 4 to the outer bottom side. Are configured differently. In detail, the ventilation hole 27 when facing the blower opening 18 with the rotation of the drum 4 is such that the upper inner wall of the ventilation hole 27 is inclined above the lower inner wall with respect to the rotation shaft 11. . More specifically, as shown in FIG. 8, the lower inner wall of the ventilation hole 27 is substantially parallel to the rotation shaft 11. The upper inner wall of the ventilation hole 27 is inclined at an angle θ with respect to the rotation axis direction. Further, the opening direction of the ventilation hole 27 is such that when the drum 4 is opposed to the air blowing port 18 as the drum 4 rotates, the angle of a part of the peripheral wall of the ventilation hole 27 is substantially the same direction as the warm air blowing direction. Is provided. Moreover, the ventilation hole 27 facing the same ventilation part 25 is set to the same taper expansion direction. The ventilation hole 27 facing one ventilation part 25 is opened in the same direction with the ventilation part 25 as one unit. Moreover, the opening direction of the ventilation hole 27 is different for each ventilation part 25.

As a result, when the drying air sent out from the blower port 18 enters the ventilation hole 27, the ventilation hole 27 has a reverse taper from the inner bottom side of the drum 4 to the outer bottom part that faces the blower port 18. Since the ventilation hole 27 is larger on the outer bottom side of the drum 4, the drying air easily flows into the ventilation hole 27. In addition, since the drying air sent out from the air blowing port 18 can enter and pass through the ventilation holes 27 without changing the flow direction, the pressure loss of the drying air until reaching the drum 4 from the air blowing port 18 is kept low. be able to. As a result, more air for drying can be sent to the drum 4 while the energy used for blowing is the same, so that energy-saving clothes can be dried.

  Further, since the size of the vent hole 27 on the inner bottom side of the drum 4 in the opening of the vent hole 27 may be small, the number and size of the vent holes 27 restricted for maintaining the strength of the ventilator 26 are further increased. Can be bigger. Compared with the case where the ventilation holes 27 are tapered in all directions, the interval between the adjacent ventilation holes 27 necessary for maintaining the strength of the ventilation body 26 can be reduced, and the number of the ventilation holes 27 is increased. Ventilation of drying air can be promoted.

  Moreover, when the ventilation part 25 is facing the ventilation opening 18, the direction of the flow of the drying air sent out from the ventilation opening 18 and the opening direction of the ventilation hole 27 are substantially the same direction, but with the rotation of the drum 4. Since the opening direction changes slightly relative to the air blowing port 18, the direction of blowing the drying air sent toward the laundry inside the drum 4 also slightly changes. Therefore, compared with the case where drying air is always sent in the same direction with respect to the laundry, the drying air hits the laundry more evenly, and thus drying of the laundry is promoted.

  After passing through the heating means 16, the drying air is passed through the ventilation port 18, the ventilation portion 25 facing the ventilation port 18, and the ventilation hole 27 in this order and arrives inside the drum 4, or faces the ventilation port 18. After passing through the ventilation section 25, the air reaches the inside of the drum 4 through another ventilation section 25 via the air passage 28.

  Since the ventilation section 25 rotates together with the drum 4, there are a plurality of ventilation sections that are opposed to the air outlet 18 at that time. The drying air discharged from the drum 4 is configured to circulate through the exhaust port 19, the circulation wind tunnel 17, the drying filter device 29, the heat exchanger 23, the blower 15, the blower port 18, the ventilation unit 25, and the drum 4. Yes. The above-described flow of drying air (indicated by an arrow in FIG. 1) is configured as a circulating air path 17a.

  From the viewpoint of removing lint from the drying air, it is necessary to provide a drying filter device 29 immediately after exiting the exhaust port 19. Further, the dry filter device 29 is preferably on the side where the user stands in front of the housing 2, that is, on the inlet 12 side of the housing 2 for ease of maintenance such as cleaning. In this case, it is preferable to extract the drying air from the inlet 12 side of the drum 4 in order to keep the circulating air path 17a short and to make a low-pressure airflow path. The air blowing port 18 is desirably provided near the bottom of the outer tub 1 so that the drying air stays in the drum 4 for as long as possible and is brought into contact with the laundry 5 for a long time.

  In order to effectively introduce the drying air flowing through the circulation air path 17a into the drum 4, a plurality of substantially circular convex ribs 20 projecting inward from the wall surface of the outer tub 1 and the outside of the annular portion 24b. A non-contact seal portion is constituted by a combination with a plurality of substantially circular concave ribs 21 formed on the bottom surface. The non-contact sealing portion is provided so as to enclose the air blowing port 18 and surround the rotating shaft 11 of the drum 4. In addition, the convex rib 20 and the concave rib 21 are configured so that the valley portion and the peak portion are fitted in a non-contact manner.

  About the clothes dryer comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

In the drying process, the drum 4 rotates while holding the wet laundry 5 inside. After the drying air is blown by the blowing means 15 and passes through the heating means 16, the air is blown in the order of the blowing port 18, the ventilation portion 25, and the ventilation hole 27, and reaches the inside of the drum 4 or is passed through the ventilation portion 25. Then, the air reaches the inside of the drum 4 through another ventilation portion 25 via the air passage 28. The drying air arriving at the drum 4 comes into contact with the wet laundry 5 and dries the laundry 5, then exits the drum 4 and exits the outer tub 1 from the exhaust port 19 provided in the outer tub 1. Go. Thereafter, the drying air is circulated by passing through the drying filter device 29 and the heat exchanger 23 and again passing through the blower means 15 and the heating means 16.

  Since the drying air sent out from the blower port 18 can enter and pass through the ventilation hole 27 with almost no change in the flow direction as indicated by the arrow Q in FIG. 7, the drying air until it reaches the drum 4 from the blower port 18. The pressure loss can be kept low. As a result, more air for drying can be sent to the drum 4 while the energy used for the blowing means 15 remains the same, and energy-saving clothing drying is possible.

  Moreover, when the ventilation part 25 is facing the ventilation opening 18, the direction of the flow of the drying air sent out from the ventilation opening 18 and the opening direction of the ventilation hole 27 are substantially the same direction, but with the rotation of the drum 4. Since the opening direction is slightly changed with respect to the blowing port 18, the direction of blowing the drying air sent toward the laundry 5 inside the drum 4 is also slightly changed as shown by an arrow R in FIG. . Therefore, compared with the case where drying air is always sent in the same direction with respect to the laundry 5, since the drying air hits the laundry 5 more uniformly, drying of the laundry 5 is accelerated | stimulated. In addition, since the direction of the flow of the drying air sent out from the blower port 18 and the opening direction of the vent hole 27 when facing the blower port 18 are substantially the same direction, the drying air passes through the vent hole 27. The pressure loss can be kept low.

  The reverse taper of the ventilation hole 27 is provided with a reverse taper in one direction so that the outer bottom side of the drum 4 into which the drying air blown from the ventilation hole 18 is introduced into the ventilation hole 27 is elongated. Compared with the case where the direction is tapered, the interval between the adjacent ventilation holes 27 necessary for maintaining the strength of the ventilation body 26 can be reduced, the number of ventilation holes 27 is increased, and the ventilation of the drying air is performed. Can be promoted. Further, when the ventilation hole 27 is opposed to the air blowing port 18, since the reverse taper is provided only in the direction of the drying air blown from the air blowing port 18, the air flow is also compared with the case where the reverse taper is omnidirectional. The ease of introducing the drying air into the holes 27 is comparable.

  On the other hand, since the ventilation body 26 is in contact with the inside of the drum 4, the ventilation body 26 is also in contact with the laundry 5 held inside the drum 4. Therefore, the laundry 5 blocks a part of the ventilation hole 27 provided in the ventilation body 26, and attempts to flow into the drum 4 through the ventilation hole 27 from the ventilation part 25 facing the air blowing port 18 at that time. It may also block the drying air.

  Therefore, in the present embodiment, an air passage 28 that connects the ventilation portions 25 to each other is provided. As a result, the blocked drying air passes through the air passage 28 formed by the opening 26a connecting the adjacent ventilation portions 25 as shown by the arrow V in FIG. It flows into the inside of the drum 4 from the ventilation holes 27 that are not, and promotes the drying of the laundry 5. Thus, since all of the plurality of ventilation portions 25 can be effectively used for ventilation of the drying air, a plurality of substantially circular convex ribs 20 projecting inward from the wall surface of the outer tub 1 and The drying air passing through the seal portion formed by the combination of the plurality of substantially circular concave ribs 21 formed on the outer bottom surface of the annular portion 24b is reduced, and the flow rate of the drying air passing through the drum 4 is increased. Thus, the drying time of the laundry 5 can be shortened. In addition, since the air passage 28 is provided at a position facing the drum 4 of the ventilation body 26 and the arm portions 4a and 24c of the drum fixing member, the strength is provided by reducing the thickness of the conventional member provided in the arm portion 4a or 24c. It is possible to avoid the risk of lowering or colliding with the housing 2 of the outer tub 1 due to the reduction in the gap between the outer tub 1 and the housing 2 (such as during transportation).

As described above, in the present embodiment, there is no unevenness due to a decrease in ventilation resistance in the ventilation holes 27 and a slight change in the direction of the drying air blown to the laundry 5 as the drum 4 rotates. Promotion of drying blown to the laundry 5, connecting the ventilation section 25 divided into a plurality of parts by the ventilation body 26, the outer tub 1 and the arm section 24 c with the air passage 28, and making all the ventilation sections 25 and the ventilation holes 27 effective By utilizing this, it is possible to save energy in the drying operation and shorten the drying time.

  Even in the case where the positions of the air blowing port 18 and the exhaust port 19 in the present embodiment are reversed, the direction of the exhaust air in the ventilation hole 27 and the exhaust port 19 is substantially the same direction, or the air path that communicates the ventilation unit 25. Providing 28 is useful because the same effect as described in the present embodiment can be obtained.

  Furthermore, in this Embodiment, it was set as the washing-drying machine provided with the washing function as a clothes dryer, However, When it is not provided with the washing function, it can implement similarly. In that case, since there is no water tank, a back plate is provided on the back side of the drum 4, for example. Since the back plate is a member fixed to the housing side, it does not rotate regardless of the rotation of the drum 4. The drying air is blown to the drum 4 by, for example, providing a blower outlet downstream of the air passage in the back plate. At this time, the air is blown with a predetermined angle in the blowing direction of the drying air. The ventilation hole 27 of the ventilation body 26 provided in the inner bottom part of the drum 4 is tapered so as to include the blowing direction of the drying air when facing the blowing port, as in the above embodiment. In this way, the ventilation section 25 has the same configuration as the washing and drying machine, and has the same effect.

  As described above, since the clothes dryer according to the present invention can save energy and shorten the drying time, it is useful as a dryer and a washing dryer.

DESCRIPTION OF SYMBOLS 1 Outer tank 2 Housing | casing 3 Elastic mechanism 4 Drum 4a Arm part 5 Laundry 6 Input port 7 Peripheral wall 8 Discharge hole 9 Stirring baffle 10 Driving means 11 Rotating shaft 12 Input port 13 Door 14 Packing 15 Blowing means 16 Heating means 17 Circulation wind tunnel (Wind path)
17a Circulating air path 18 Blower port 19 Exhaust port 20 Convex rib 21 Concave rib 22 Cooling water supply port 23 Heat exchanger 24 Drum fixing member 24a Bearing part 24b Annular part 24c Arm part 25 Ventilation part 26 Ventilation body 26a Opening part 27 Ventilation Hole 28 Air passage 29 Drying filter device

Claims (5)

A drum which is supported by a horizontal or inclined rotating shaft and accommodates laundry;
Drive means for rotationally driving the drum;
An air path leading the drying air to the drum;
A blower port that is connected to the air path and sends out drying air at a predetermined angle from the bottom side of the drum,
A blowing means provided in the air passage, for blowing drying air to the drum;
A ventilator provided at the inner bottom of the drum and having a plurality of vent holes;
The vent hole expands in a tapered shape from the inside of the drum toward the blower port side,
A garment configured such that the inclination angle of the inner wall of the ventilation hole coincides with the blowing direction of the drying air from the air blowing port when at least a part thereof faces the air blowing port as the drum rotates. Dryer. A drum fixing member having a plurality of arms formed radially from the center and attached to the outer bottom of the drum;
2. The clothes dryer according to claim 1, further comprising: a plurality of ventilation portions formed at a bottom portion of the drum and separated by the arm portion, wherein the ventilation holes provided in each of the ventilation portions have a tapered shape in the same direction. . The clothes dryer according to claim 1 or 2, wherein the ventilation hole has a taper shape in one direction so that the outer bottom side of the drum is elongated. The angle at which the ventilation hole is inclined from the inner bottom side to the outer bottom side of the drum at the upper part of the ventilation hole is different from the angle at which the ventilation hole is inclined from the inner bottom side to the outer bottom side of the drum at the lower part of the ventilation hole. The clothes dryer according to claim 1 or 2 constituted as mentioned above. The air passage is configured to connect with the air blowing port from above to below,
5. The ventilation hole when facing the air blowing port as the drum rotates, the upper inner wall of the ventilation hole is inclined upward from the lower inner wall. The clothes dryer described.