JP6450940B2 - Clothes dryer - Google Patents

Description

  The present invention relates to a clothes drying apparatus that feeds air from the outside of a machine into a rotating drum that contains clothes, and exhausts the air that has taken moisture from the clothes to the outside to dry the clothes.

  In order to dry clothes in a clothes dryer or a washing / drying machine, the rotating drum containing the clothes is rotated to stir the clothes, and air is blown into the rotating drum to apply air to the clothes. As a result, the air takes moisture from the clothes and the clothes are dried (see, for example, Patent Document 1).

  FIG. 8 shows a conventional clothes drying apparatus described in Patent Document 1. In FIG. As shown in FIG. 8, the conventional clothes drying apparatus stores clothes in a rotating drum 101, closes the door 102, and when the motor 103 is energized, the pulley 105 is driven via the speed reduction mechanism 104 and is driven by the belt 106. The rotating drum 101 is rotated, and the clothing in the rotating drum 101 is tumbled. At the same time, the fan 107, which is a blower unit directly connected to the shaft of the motor 103, rotates, and the air flow generated by the fan 107 passes through the heater 108, which is a heating unit, and becomes heated air. The clothes are heated and dried, passed through the filter 110 provided on the rear surface of the rotating drum 101, the vent holes 111, and the vent holes 113 of the support plate 112, and discharged from the exhaust port 114 to the outside. Is to do.

Japanese Unexamined Patent Publication No. 63-005799

  However, in the configuration according to the prior art, in the air path entering the rotary drum, the fan and the heater are arranged in this order from the upstream side, and the heater is transmitted by heat transmitted from the fan or air compression heat from the fan. Since the temperature of the air flowing into the air rises before heating, there is a problem that the heater cannot be efficiently heated.

  In addition, in order to shorten the drying time of clothes and reduce wrinkles of clothes after drying, it is desirable to send a large amount of drying air into the rotary drum. There was a problem that the pressure loss of the air passage caused a decrease in the air volume downstream of the heating means.

  Also, if you try to increase the fan's capacity to increase the air flow, the rotation speed of the rotating drum will also increase, and you will not be able to stir enough clothing. Since the speed is high and the directivity is strong, there is a problem in that the wind strongly hits the heat generating part and the support body in the vicinity of the downstream of the fan, and a large wind noise is generated, which makes the user uncomfortable.

  An object of the present invention is to solve the conventional problems described above, and an object of the present invention is to provide a clothing and clothing drying apparatus that can be efficiently heated by a heating unit and suppresses a decrease in air volume and wind noise at the heating unit.

In order to solve the above-described conventional problems, a clothes drying apparatus of the present invention includes a main body, a rotating drum that is rotatably provided in the main body, an intake port that takes in air outside the main body as drying air, An intake path for supplying the drying air from the intake port to the rotary drum, an intake rectification unit for rectifying the drying air taken from the intake port, a heating unit for heating the drying air, and the drying unit A blower that blows air into the rotating drum, an exhaust opening that opens to the outside of the main body, an exhaust path that supplies the drying air heat-exchanged with clothing in the rotating drum to the exhaust opening, A control unit that controls the blower unit, the heating unit, and the like, and is arranged in the intake path from the upstream side of the drying air in the order of the intake port, the intake rectification unit, the heating unit, and the blower unit. was set, the heating portion is disposed The intake passage is provided with heater rectifying plates that are divided into a first air passage that passes through the heating portion and another air passage that does not pass through the heating portion and directly communicates with the air blowing portion, above and below the heating portion. The end of the plate on the suction port side is formed so as to expand in the vertical direction as it goes toward the suction port .

As a result, the air blowing unit is located downstream of the heating unit, so that the air passing through the heating unit is not affected by the transfer heat or compression heat of the air blowing unit, and is dried from the intake port by the air blowing unit located downstream of the heating unit. Since the working air is sucked in, the vicinity of the heating unit has a uniform flow of air, and the heating unit can efficiently heat the drying air. In addition , the intake air rectification unit can rectify the drying air entering the heating unit, and the heater rectification plate increases the pressure loss and decreases the flow rate by passing the drying air through the heating unit. The first air passage is divided into a first air passage and the other air passages, and the end of the heater rectifying plate on the inlet side expands in the vertical direction as it goes toward the inlet. Since the drying air easily flows into 43 and passes through the heating portion evenly, the heating efficiency can be maintained and the flow rate can be balanced, and a large air volume can be maintained. Furthermore, since there is no heating part that causes air pressure loss or wind noise on the downstream side of the air blowing part, a large amount of wind can be sent from the air blowing part, and wind noise can be reduced.

In the clothes drying apparatus of the present invention, since the air blowing unit is located downstream of the heating unit, the air passing through the heating unit is not affected by the transmission heat or compression heat of the air blowing unit, and the intake rectification unit enters the heating unit. While the drying air can be rectified and the heater rectifying plate causes the drying air to pass through the heating section, the pressure loss increases and the flow rate decreases. By dividing the air flow path into the first and second air passages 43, the end of the heater baffle plate on the suction port side expands in the vertical direction toward the suction port side. Since it passes uniformly through the heating section, it is possible to maintain the heating efficiency and balance the flow rate, and to maintain a large air volume. Further, since the drying air is sucked from the intake port by the air blower located at the downstream position of the heating unit, a uniform airflow is generated in the vicinity of the heating unit, and the drying air can be efficiently heated by the heating unit. In addition, since there is no heating part that causes air path pressure loss or wind noise on the downstream side of the air blowing part, a large amount of wind can be sent from the air blowing part, and wind noise can be reduced.

The perspective view which shows the external appearance of the drum type washing-drying machine in Embodiment 1 of this invention Top view of the upper interior of the drum type washing and drying machine AA sectional view in FIG. 2 of the drum type washing and drying machine. Cross-sectional view of the main part of the drying path of the drum-type washing and drying machine Sectional drawing of BB in FIG. 4 of the drum type washing and drying machine Sectional drawing of CC in FIG. 4 of the drum type washing-drying machine. (A) Perspective view of the first lint filter unit of the drum type washing and drying machine (b) Perspective view of the second lint filter unit of the drum type washing and drying machine (c) The filter housing chamber of the drum type washing and drying machine Cross-sectional perspective view The graph which shows the exhaust temperature after performing the drying process of the drum type washing dryer Longitudinal sectional view of a conventional clothes drying device

According to a first aspect of the present invention, there is provided a main body, a rotating drum provided rotatably in the main body, an intake port for taking in air outside the main body as drying air, and the drying air from the intake port to the rotating drum. And an intake path for rectifying the drying air taken from the intake port.
An air rectification unit, a heating unit that heats the drying air, a blower unit that blows the drying air into the rotating drum, an exhaust port that opens to the outside of the main body, and clothing and heat in the rotating drum An exhaust path for supplying the exchanged drying air to the exhaust port, and a control unit for controlling the air blowing unit, the heating unit, and the like, and the intake path from the upstream side of the drying air, An air intake port, the heating unit, and the air blowing unit are arranged in this order, and an air intake path in which the heating unit is arranged includes a first air path that passes through the heating unit, and the air blowing unit that does not pass through the heating unit. Heater rectifying plates that divide into other air passages leading to the upper and lower sides of the heating unit are provided, and the end of the heater rectifying plate on the suction port side is formed so as to expand in the vertical direction as it goes toward the suction port side. with the cloth dryer, the air blowing portion in the downstream of the heating unit Therefore, the air passing through the heating unit is not affected by the heat transmitted from the air blowing unit or the compression heat, and the air is sucked from the intake port by the air blowing unit located downstream of the heating unit. It becomes possible to heat the drying air efficiently in the heating section. In addition, the intake air rectification unit can rectify the drying air entering the heating unit, and the heater rectification plate increases the pressure loss and decreases the flow rate by passing the drying air through the heating unit. The first air passage is divided into a first air passage and the other air passages, and the end of the heater rectifying plate on the inlet side expands in the vertical direction as it goes toward the inlet. Since the drying air easily flows into 43 and passes through the heating portion evenly, the heating efficiency can be maintained and the flow rate can be balanced, and a large air volume can be maintained. Furthermore, since there is no heating part that causes air pressure loss or wind noise on the downstream side of the air blowing part, a large amount of wind can be sent from the air blowing part, and wind noise can be reduced.

In the second invention, in particular, the lead wire connected to the heating unit of the first invention flows from the intake port by passing through the intake path and being a clothing drying device connected to the control unit. Since the lead wire is always cooled by the drying air outside the main body, it is possible to suppress the temperature rise of the connecting portion of the heating unit, and the quality of the heating unit can be ensured even if the capability of the heating unit is increased.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings, taking a drum-type washing and drying machine as an example. Note that the present disclosure is not limited by the embodiment.

(Embodiment 1)
The first embodiment shows a drum-type washing and drying machine in which the clothes drying apparatus according to the present invention is applied to a drum-type washing machine. FIG. 1 is a perspective view showing an external appearance of a drum-type washing / drying machine according to Embodiment 1 of the present invention, FIG. 2 is a plan view of the upper part of the drum-type washing / drying machine, and FIG. It is AA sectional drawing in FIG. 2 of a machine, and has shown focusing on the structure of the drying function.

  1 to 3, the drum-type washing and drying machine 1 according to the first embodiment is configured in an oblique drum type in which the opening of the rotary drum 2 faces upward on the front side of the washing machine housing 6. A door body 9 for putting laundry into and out of the rotary drum is provided on the front surface of the washing machine casing 6 so as to be freely opened and closed, and an operation unit 17 for selecting and inputting a driving operation is disposed above the door body 9. On the upper left side of the washing machine casing 6 is provided a detergent insertion portion 18 for introducing detergent, and on the right side, the first lint filter unit 21 is arranged so that it can be pulled out and maintained. The first lint filter unit 21 is disposed on the top surface portion 7 of the washing machine housing 6 for easy maintenance by the user.

  In the washing machine housing 6, a water tub 3 containing a rotating drum 2 is supported by a suspension structure such as a damper 5. The rotating drum 2 is rotationally driven by a motor 14 disposed at the rear part of the water tank 3. When the door body 9 is opened, the laundry is put into the rotary drum 2 from the laundry entrance / exit 11, the detergent is put into the detergent charging unit 18, and the operation course selection input and the operation start are input from the operation unit 17, the water tank 3 The detergent mixture water in which the detergent thrown into the detergent throwing part 18 is mixed is supplied. When water corresponding to the input amount of laundry is supplied, the rotary drum 2 is driven to rotate, and the stirring blade 4 provided on the inner peripheral surface of the rotary drum 2 lifts the laundry and drops it from above. A washing step is performed. When this washing process is completed, the drain valve 12 is opened, and dirty washing water is discharged from the drain pipe 13 to the outside. After the washing process, rinsing and dehydration processes are performed, but the description thereof is omitted because it is a known operation.

  The drum-type washing / drying machine 1 can be shifted to a drying process of drying the laundry after the dehydration process is completed by the selection input of the operation course from the operation unit 17. In addition, it is possible to operate as a clothes dryer by performing only a drying process for drying wet clothes and the like put in the rotary drum 2. This drying function will be described below.

As shown in FIGS. 2, 3, and 4 to 7, a component 8 having a drying function is disposed on the upper portion of the washing machine casing 6. 4 is a cross-sectional view of the main part of the drying path of the drum type laundry dryer in the first embodiment of the present invention, FIG. 5 is a sectional view taken along line BB in FIG. 4 of the drum type laundry dryer, and FIG. 4 is a cross-sectional view taken along the line C-C in FIG. 4 of the drum type washing and drying machine, FIG. 7A is a perspective view of a first lint filter unit of the drum type washing and drying machine, and FIG. A perspective view of the second lint filter unit of the drum type washing and drying machine, FIG. 7C is a sectional perspective view of the filter storage chamber of the drum type washing and drying machine.

  An air inlet 23 is provided in the washing machine casing 6 for taking in air flowing into the washing machine casing 6 from the outside of the washing machine casing 6 as drying air, and the clothes are dried in the rotary drum 2. An exhaust port 24, which is an opening for exhausting the drying air that is discharged, is provided outside the washing machine casing 6. The intake port 23 and the exhaust port 24 are connected to form a drying path 19 for drying air. The drying path 19 includes an intake path 25, a water tank 3, a rotating drum 2, and an exhaust path 26.

  The intake path 25 is a path for supplying intake air from the intake port 23 into the rotary drum 2. In the present embodiment, the intake passage 25 is constituted by the intake port 23, the filter housing chamber 35, the intake port 33, the intake pipe 27, the first connection hose 29, and the blower inlet 15 provided in the water tank 3.

  The exhaust path 26 is a path for exhausting the drying air after drying the clothes in the rotary drum 2 from the rotary drum 2 to the exhaust port 24. In the present embodiment, the exhaust path 26 is configured by an air outlet 16 provided in the water tank 3, a second connection hose 30, a filter housing chamber 35, a discharge port 34, and an exhaust pipe 28 communicating with the exhaust port 24. The exhaust port 24 is provided with a lattice-like cover body 24a that prevents foreign substances from entering.

  In the configuration in which the first lint filter unit 21 and the second lint filter unit 22 are mounted in the filter storage chamber 35 as in the present embodiment, the intake path 25 in the filter storage chamber 35 is the first lint filter unit. 21, the first suction part 21 a, the second suction part 22 a of the second lint filter unit 22, and the suction port 33. Similarly, the exhaust path 26 in the filter housing chamber 35 is a path of the first discharge part 21 b of the first lint filter unit 21, the second discharge part 22 b of the second lint filter unit 22, and the discharge port 34.

  In the first lint filter unit 21, the filter sheet 37 is not provided in the first suction part 21a, but the filter sheet 37 is provided only in the first discharge part 21b. The second lint filter unit 22 is provided with a filter sheet 37 for both the second suction part 22a and the second discharge part 22b.

  The intake pipe 27 is provided with a heater 39 as a heating unit and a blower fan 20 as a blower.

  The heater 39 is a PTC heater having features such as relatively low cost and self-temperature control. The blower fan 20 uses a centrifugal fan. When a fan is used, it is necessary to increase the rotation speed and the fan diameter in order to obtain a large flow rate. If the fan speed is increased, the installation environment is deteriorated due to noise and vibration. Therefore, the fan diameter is set to about 250 mm so as to balance the speed.

  Then, when the blower fan 20 is rotationally driven, the drying air sucked from the intake port 23 is heated by the heater 39 provided in the intake pipe 27 and blown into the water tank 3 from the blower inlet 15. . As a result, the heated drying air flows into the rotary drum 2 and hits the laundry or clothing (hereinafter collectively referred to as clothing), and takes the moisture of the clothing to become the drying air absorbed. The dried drying air is discharged from the exhaust port 24 to the outside of the apparatus. Thereby, drying of the clothes accommodated in the rotating drum 2 proceeds.

The motor 14, the heater 39, the blower fan 20, and the like are controlled by a control unit (not shown) such as a microcontroller disposed in the washing machine casing 6. The control unit controls the drum type washing and drying machine 1 in accordance with the operation instruction input from the operation unit 17.

  The configuration of the intake path 25 and the exhaust path 26 in the above configuration will be described below with reference to FIGS. 4 to 6 and FIGS. 7 (a) to 7 (c).

  In the intake passage 25, an intake rectification unit 40 for rectifying drying air is provided at an intake port 33 that is an inlet from the filter housing chamber 35 to the intake pipe line 27. Further, in the exhaust path 26, an exhaust rectification unit 41 for rectifying the drying air is provided in an exhaust port 34 that is an outlet from the filter housing chamber 35 to the exhaust pipe 28.

  In the intake passage 25, a heater 39 is provided downstream of the intake rectification unit 40 by about 20 mm. And in order to raise the heating efficiency by the heater 39, the width | variety of the horizontal direction of the air path of the heater 39 is enlarged as shown in FIG. Further, a large number of heat dissipating plates 39a are arranged on the surface of the heater 39 to increase the heat dissipating area and improve the heating efficiency. In general, when the heat dissipation area of the heater 39 is increased, the pressure loss increases and the flow rate decreases.

  However, as shown in FIG. 5, the heater rectifying plate 42 causes the first air passage 43 that passes through the heater 39 and the heater 39 provided above and below the first air passage 43 to directly communicate with the blower fan 20. The air path A44a (above the first air path 43) and the other air path B44b (below the first air path 43) are divided so as to maintain the heating efficiency and the flow rate balance. The end portion 42a on the suction port 33 side of the heater rectifying plate 42 is formed so as to expand in the vertical direction as it goes toward the suction port 33 side. As a result, the drying air easily flows into the first air passage 43 and passes through the heater 39 evenly. Note that the heater rectifying plate 42 is made of non-combustible resin, and can prevent burning due to heat generated by the heater 39.

  Note that the lead wire 48 connected to the heater 39 passes through another air passage A 44 a provided on the first air passage 43 from a connection portion (not shown) with the heater 39, and the intake pipe 27. Is led out of the intake pipe 27 through a through-hole (not shown) provided in the top surface of the, and is connected to the control unit. As a result, the lead wire 48 is always cooled by the cooling air outside the machine that is sucked from the air inlet 23, so that the temperature of the connecting portion with the heater 39 is also reduced by heat conduction. It is possible to improve the quality of the connection part.

  As described above, in the intake passage 25, the air intake 23, the heater 39, and the blower fan 20 are arranged in this order from the upstream side, so that the drying air that is not affected by the heat transmitted from the blower fan 20 or the compression heat is uniform. It is possible to efficiently heat the drying air through the heater 39. Further, since there is no heater 39 that causes pressure loss downstream of the blower fan 20, it is possible to realize a large air volume and reduce wind noise.

  The intake path 25 and the exhaust path 26 are configured to be adjacent to each other at the first adjacent surface 38a in the filter housing chamber 35, and between the suction port 33 and the discharge port 34 to the heater 39, the second adjacent surface 38b. It is composed adjacent to each other. The first adjacent surface 38a and the second adjacent surface 38b form an adjacent section in which heat exchange between the intake air in the intake passage 25 and the exhaust in the exhaust passage 26 is performed.

  In the present embodiment, the first adjacent surface 38a is formed in the first lint filter unit 21 that is detachably attached to the filter housing chamber 35. In the configuration of the filter housing chamber in which the first lint filter unit 21 is not removable, the adjacent surface 38 may be provided directly in the filter housing chamber 35.

The adjacent distance between the intake path 25 and the exhaust path 26 by the first adjacent surface 38a and the second adjacent surface 38b is a distance close to the extent that the air in the intake path 25 and the exhaust path 26 can exchange heat with each other. In the present embodiment, the adjacent distance, that is, the thickness of the adjacent surface 38 is set to about 1 to 2 mm, but may be a distance that allows the intake and exhaust air to exchange heat with each other. The adjacent surface 38 in the adjacent section is not limited to a single substantially planar shape, and may be formed by a plurality of surfaces or curved surfaces.

  Moreover, the 1st lint filter unit 21 and the 2nd lint filter unit 22 are comprised so that maintenance, such as cleaning of a filter, can be easily performed by pulling out from the top | upper surface part 7 of the washing machine housing | casing 6. FIG. A rotating panel 46 is provided below the decorative plate 45 configured to be flush with the outer surface of the top surface of the washing machine casing 6 of the first lint filter unit 21 so as to be flush with the decorative plate 45. It has been. When the upper portion of the rotating panel 46 is lightly pressed with a finger, the spring-biased rotating panel 46 is rotated by a rotating shaft (not shown) located inside and below the decorative plate 45. When the decorative plate 45 is pulled with a fingertip, the first lint filter unit 21 can be pulled out. The second lint filter unit 22 is provided with a convex portion 22c on the upper portion, and by pulling the convex portion 22c forward, the upper fitting is removed, and the second lint filter unit 22 can be pulled out by lifting upward.

  The first lint filter unit 21 is provided with a packing member 47 at the lower part of the decorative plate 45 so that the drying air does not leak from the outer periphery of the decorative plate 45.

  The intake passage 25 is opened toward the inside of the machine via an intake port 23 located above the washing machine casing 6. The drying air that has flowed into the machine mainly through a gap including the lower part of the washing machine housing 6 is sucked into the intake path 25 from the intake port 23. By arranging the air inlet 23 above the washing machine casing 6, it is possible to intake warmer air above the inside of the machine, and to prevent large foreign matters or the like outside the machine from entering.

  The intake passage 25 sucks drying air from the inside of the apparatus through the intake port 23 together with the operation of the blower fan 20, and the intake passage 25, that is, the first suction portion 21 a and the second lint filter of the first lint filter unit 21. The air is blown into the rotary drum 2 through the second suction part 22 a, the intake air rectification part 40, the heater 39, the intake pipe 27, the blower fan 20, the first connection hose 29, and the blower inlet 15 of the unit 22. The drying air blown into the rotary drum 2 removes moisture from the clothes and dries the clothes, and then the exhaust path 26, that is, the air outlet 16, the second connection hose 30, and the first lint filter unit 21. The air is exhausted from the exhaust port 24 to the outside through the first discharge part 21b, the second discharge part 22b of the second lint filter unit 22, and the exhaust rectification part 41.

  The first suction part 21a and the first discharge part 21b of the first lint filter unit 21 are both configured to have a grid-like opening, and the filter sheet 37 is attached to the opening only in the first discharge part 21b. ing. The second suction part 22a and the second discharge part 22b of the second lint filter unit 22 are both configured to have a grid-like opening, and a filter sheet 37 is attached to the opening. Regarding the intake passage 25, since the foreign matter contained in the drying air sucked from the inside of the machine is relatively small, the foreign matter is removed by the filter sheet 37 of only the second discharge part 22b of the second lint filter unit 22 in consideration of the cost and the like. Can be collected. On the other hand, since the air for drying after passing through the clothes passes through the exhaust path 26, a large amount of foreign matter such as lint is contained, so the filter sheet is included in both the first discharge part 21b and the second discharge part 22b. At 37, foreign matter is collected.

  The first lint filter unit 21 includes a first suction portion 21a and a first discharge portion 21b on the downstream side of intake and exhaust, respectively, and connects the first adjacent surface 38a with the first adjacent surface 38a interposed therebetween.

In the present embodiment, the half-shell container of the first lint filter unit 21 is made of a polypropylene material in consideration of processability, strength, ease of handling, etc., but may be made of other materials. . By configuring the half-shell-shaped side surface and the bottom portion with lattice-shaped openings, a wide opening surface for collecting lint can be secured while securing strength.

  In the present embodiment, the bottom of the first discharge portion 21b of the first lint filter unit 21 is configured with an inclination and a step with respect to the surface of the decorative plate 45 above the first lint filter unit 21. Thereby, since the 1st lint filter unit 21 can be efficiently installed in the limited space in the washing machine casing 6, a filter with a wider opening can be configured.

  In the present embodiment, the filter sheet 37 is formed in the first discharge part 21b of the first lint filter unit 21 and the grid-like openings of the second suction part 22a and the second discharge part 22b of the second lint filter unit 22. It is made to adhere to the inner surface, that is, the upstream side in the blowing direction by insert molding. As a result, the surface of the filter sheet 37 on the side where the lint is collected is free from protrusions such as a lattice, so that lint removal during maintenance by the user can be facilitated.

  The filter storage chamber 35 opens a filter inlet / outlet 36 for taking in and out the first lint filter unit 21 and the second lint filter unit 22 on the upper surface side of the washing machine casing 6, and the intake path 25 and the exhaust path 26. Are adjacent to each other. The first adjacent surface 38a and the second adjacent surface 38b of the first lint filter unit 21 form a heat exchanger between the intake passage 25 and the exhaust passage 26, and the air sucked from the intake port 23 and the air outlet 16 It is possible to exchange heat with the air discharged from the heater, warm the drying air up to the heater 39, and lower the temperature of the discharged drying air.

  In the present embodiment, the first adjacent surface 38a as a heat exchanger is made of a polypropylene material, so that it can be manufactured integrally with the first lint filter unit 21, thereby facilitating manufacturing and reducing costs. Realize. Needless to say, the first adjacent surface 38a and the second adjacent surface 38b may be made of a steel material having a high heat exchange efficiency.

  Further, by arranging the first adjacent surface 38a to be inclined with respect to the blowing direction in the first lint filter unit 21, the flow of the intake air and the exhaust gas is changed, and the contact area between the intake air and the exhaust gas and the adjacent surface is increased, Heat exchange can be performed more efficiently.

  When the first lint filter unit 21 is inserted into the filter housing chamber 35, the filter inlet / outlet port 36 is sealed by a packing member 47 provided in the first lint filter unit 21. The first lint filter unit 21 is securely fixed to the filter entrance 36 by the convex shape formed on the side surface of the packing member 47.

  In the present embodiment, the heater 39 is provided about 20 mm downstream of the suction port 33, but since the suction rectification unit 40 is disposed in the suction port 33, the first lint is provided from the filter housing chamber 35. Even when the filter unit 21 and the second lint filter unit 22 are taken out, the heater 39 is not exposed, and the user can be prevented from touching the heater 39 by mistake.

  In the above configuration, the drying process will be described below with reference to FIG. FIG. 8 is a graph showing the exhaust temperature after performing the drying process of the drum type laundry dryer in the present embodiment.

When the room temperature is 20 ° C. and the room humidity is 60%, the heater 39 is a PTC heater as described above, and its output is changed. Under these conditions, the output is set to three conditions of 200 W, 400 W, and 600 W. Further, by controlling the operation of the blower fan 20, the air ^volume, between 0.5m ³ /min~4.0m 3 / min, it is controlled to be 0.5 m ³ / min interval. FIG. 8 shows the measured exhaust temperature discharged from the exhaust port 24 to the outside of the machine under the above conditions.

  In an indoor environment, it is well known from experience that the user feels uncomfortable when the room temperature in the drying process becomes higher than the room temperature +20 deg before the drying process. That is, the exhaust temperature is preferably the room temperature +20 deg or less, more preferably the room temperature +10 deg.

  In order to suppress to the said conditions, it is desirable that the output of the heater 39 is low, but if it is too low, there is a problem that the clothes are not easily dried, and the drying process takes a long time. On the other hand, if the output of the heater 39 is too high, there is a problem that the exhaust temperature becomes too high, as in 600 W in FIG. Furthermore, if the temperature of the drying air applied to the clothes becomes too high, there arises a problem that the clothes are shrunk or damaged. Therefore, the output of the heater 39 is optimally about 400 W, and is preferably at most 500 W, that is, 500 W or less.

Thus, when the output of the heater 39 is 500 W or less, preferably 400 W, in order to keep the exhaust temperature to the room temperature +20 deg or less, more preferably to the room temperature +10 deg, the blower fan 20 is shown in FIG. The air volume is desirably 2 m ³ / min or more. As a result, the increase in the room temperature can be suppressed to 20 deg or less, and the clothes can be dried while spreading the wrinkles of the clothes with this large air volume. Further, even if the air volume is increased too much, the effect is saturated as shown in FIG. 8, so 3 m ³ / min is desirable. In the above, the exhaust temperature is set to the room temperature +20 deg or less, more preferably the room temperature +10 deg. However, the temperature of the drying air applied to the clothing after passing through the heater 39 is set to the room temperature +20 deg or less, more preferably Even if the temperature is +10 deg, the same effect can be obtained.

As described above, in the drying process, when the blower fan 20 is rotationally driven, the drying air sucked from the air inlet 23 is passed through the first air passage 43 passing through the heater 39 provided in the intake pipe 27, It passes through the other air passage A44a and the other air passage B44b that directly communicate with the blower fan 20 without passing through the heater 39. At this time, only the drying air passing through the first air passage 43 is heated by the heater 39, and then the heated drying air and the unheated drying air passing through the other air passage A44a and the other air passage B44b. Are mixed and blown into the water tank 3 from the blower inlet 15. At this time, the output of the heater 39 is 500 W or less, preferably 400 W, and the air volume is 2 m ³ / min or more, preferably 3 m ³ / min.

  At this time, the pressure loss increases and the flow rate decreases when the drying air passes through the heater 39, but the heater 39 is divided into the first air passage 43, the other air passage A44a, and the other air passage B44b. Thus, the balance between the heating efficiency and the flow rate can be maintained, and the large air volume can be maintained.

  After that, the mixed drying air flows into the rotating drum 2 that is rotationally driven by the motor 14, hits the rotating clothing, and becomes the drying air that absorbs moisture by taking away moisture from the clothing. The dried drying air is discharged from the exhaust port 24 to the outside of the apparatus. Thereby, drying of the clothes accommodated in the rotating drum 2 proceeds. The exhaust temperature at this time is room temperature +20 deg or less, more preferably room temperature +10 deg.

At this time, since the output of the PTC heater is 500 W or less, the temperature rise is small, shrinkage and damage of the garment can be suppressed, and since the air volume is 2 m ³ / min or more, the wrinkle of the garment is extended. Can be dried. Moreover, since the exhaust temperature is also room temperature + 20 degrees or less, the temperature rise in the room is small, and the installation environment can be kept comfortable by preventing the condensation in the room.

  As described above, the clothes drying apparatus according to the present invention can efficiently heat the drying air, and can realize a large air volume and low noise, so that the clothes dryer specialized for clothes drying can be realized. It can be similarly applied to a vertical type washing machine and the like.

DESCRIPTION OF SYMBOLS 1 Drum-type washing dryer 2 Rotating drum 3 Water tank 4 Stirring blade 5 Damper 6 Washing machine housing 7 Top surface part 8 Drying component 9 Door body 11 Laundry outlet 12 Drain valve 13 Drain pipe 14 Motor 15 Air inlet 16 Air outlet 17 Operation part 18 Detergent input part 19 Drying path 20 Air blower fan (air blower)
21 1st lint filter unit 21a 1st suction | inhalation part 21b 1st discharge part 22 2nd lint filter unit 22a 2nd suction | inhalation part 22b 2nd discharge | emission part 22c Convex part 23 Intake port 24 Exhaust port 24a Grid-shaped cover body 25 Intake path 26 Exhaust path 27 Intake line 28 Exhaust line 29 First connection hose 30 Second connection hose 33 Suction port 34 Discharge port 35 Filter storage chamber 36 Filter inlet / outlet 37 Filter sheet 38a First adjacent surface 38b Second adjacent surface 39 Heater ( Heating part)
39a Heat radiating plate 40 Intake rectification unit 41 Exhaust rectification unit 42 Heater rectification plate 43 First air passage 44a Other air passage A
44b Other airways B
45 Decorative plate 46 Rotating panel 47 Packing member 48 Lead wire

Claims (2)

A main body, a rotating drum rotatably provided in the main body, an intake port for taking in air outside the main body as drying air, and an intake path for supplying the drying air from the intake port to the rotating drum An intake air rectification unit that rectifies the drying air taken from the intake port, a heating unit that heats the drying air, a blower unit that blows the drying air into the rotating drum, and an outside of the main body An exhaust port that opens to the exhaust port, an exhaust path that supplies the drying air heat-exchanged with clothing in the rotary drum to the exhaust port, and a control unit that controls the blower unit, the heating unit, and the like, In the intake path, from the upstream side of the drying air, the intake port, the intake rectification unit, the heating unit, and the air blowing unit are arranged in this order, and the intake path in which the heating unit is arranged is the heating unit. A first air passage passing through the section and the heating section Heater rectifying plates that divide into other air passages that do not pass directly to the air blowing unit are provided above and below the heating unit, and the end of the heater rectifying plate on the inlet side moves upward and downward as it goes toward the inlet side. A clothes drying device formed to spread in the direction . The lead wire connected to the heating section, through the other air passage which is provided on the heating portion, cloth dryer of claim 1 which is connected to the control unit.

Images