JP6282389B2 - Clothes dryer - Google Patents

Description

  Embodiments described herein relate generally to a clothes dryer.

  2. Description of the Related Art Conventionally, in a clothes dryer, a drum for storing clothes is arranged inside the outer tub, and the drum is rotated by a drum driving device such as a motor from the outside of the outer tub, and at the same time, a hot air supply device from the outside of the outer tub By supplying warm air to the inside of the outer tub and to the inside of the drum, the clothes are dried.

  In this case, the air supply port for supplying the hot air to the inside of the drum is generally provided at the rear part of the outer tub, and the hot air supplied to the inside of the drum is discharged to the outside of the outer tub. The exhaust port for this is provided in the front part of the outer tank on the opposite side. Therefore, in this case, the hot air is supplied to the inside of the drum from the rear part of the outer tub and continues to be discharged from the front part of the outer tub to the outside of the outer tub so as to dry the clothes. Yes.

  For this reason, drying of the clothing located in the rear part in the drum proceeds first, and it is likely that the drying of the clothing located in the front part in the drum is delayed. Therefore, when the drying rate is 100% up to the clothing located in the front part of the drum, the clothing located in the rear part of the drum has a drying rate exceeding 100%, resulting in uneven drying. Moreover, the clothes located in the rear part in the drum are damaged by shrinkage due to overdrying when the drying rate exceeds 100%.

  In addition, if the drum is installed horizontally, the clothing will be distributed throughout the front and back of the drum, but the clothing located at the rear of the drum will be lifted by the rotation of the drum before falling. While it repeats straightly, the clothing located at the front of the drum is twisted between the rotating drum and the stationary door, and tends to wrinkle.

  On the other hand, if the drum is provided with a slanted front so that clothes can be taken in and out, clothing that is heavy with moisture, such as underwear and socks with high moisture content in cotton, will continue to rotate while the drum continues to rotate. Light clothes such as shirts and long-sleeved shirts tend to gather at the front, which is the upper part of the drum. The clothes such as shirts and long-sleeved shirts are easy to touch to the human eye when worn, and are easy to gather at the front of the drum during drying, despite being disliked from wrinkling. It is twisted between the stationary doors and tends to wrinkle.

  Therefore, if the clothes located at the rear part and the front part in the drum are dried well, the clothes are dried evenly, without causing damage such as shrinkage, and without wrinkles. It is an important point to dry and improve the finish.

  In Patent Document 1 below, a first air supply port for supplying warm air from the outside of the outer tub to the inside of the drum is formed in the rear part of the outer tub, and second for supplying the same hot air. The air supply port is formed in the front part of the outer tub, and the supply of hot air from the first air supply port and the supply of hot air from the second air supply port are switched according to the progress of the drying process. What was done is described.

JP 2011-83457 A

However, the thing of the said patent document 1 switches supply of the warm air from the 1st air supply port, and supply of the warm air from the 2nd air supply port according to progress of a drying process. Yes, the supply of warm air into the drum is limited to one of the first air supply port and the second air supply port.
For this reason, it has the fault that a drying speed is slow and it takes time to complete | finish drying.

  Therefore, it takes less time to finish drying, and the clothes can be dried uniformly, without causing damage such as shrinkage, and can be dried without wrinkles. Provided is a clothes dryer capable of improving the quality.

In the clothes dryer according to the present embodiment, a drum that is provided in an upwardly inclined shape and accommodates clothes, an outer tub that accommodates the drum, a drum driving device that rotates the drum, and an exterior of the outer tub. A hot air supply device for supplying hot air to the inside of the drum, and a first air supply port for supplying the hot air is formed in the rear part of the outer tub and the hot air is supplied. A second air supply port connected to the first air supply port, and a second air flow channel connected to the second air supply port. And an air volume adjusting damper that adjusts a ratio of the air volume passing through both air paths is provided at a branch portion of both the first and second air paths, and the hot air supply device is provided from the outside of the outer tub. An auxiliary blower fan is provided to supply hot air into the drum, and hot air is supplied from the first air supply port. The supply of hot air from said second air inlets from the warm while allowing simultaneously performed in parallel the supply of air, the first air supply port to the inside of the outer tub from the air supply port and The ratio of the hot air to be supplied and the hot air to be supplied to the inside of the outer tub from the second air supply port is changed by adjusting the opening of the air volume adjustment damper according to the progress of the drying process. Thus, the air flow supplied from the first air supply port is made larger than the air flow supplied from the second air supply port to start the drying process, and as the drying process proceeds, the second The air volume supplied from the air supply port is increased .
Further, in the clothes dryer of the present embodiment, a drum that is provided in an upwardly inclined shape and accommodates clothes, an outer tub that accommodates the drum, a drum driving device that rotates the drum, and the outer tub A warm air supply device for supplying warm air to the inside of the drum from the outside of the drum, and a first air supply port for supplying the warm air is formed in a rear portion of the outer tub, and the warm air A second air supply port is formed in the front portion of the outer tub, and an auxiliary air blower fan is provided for the hot air supply device to supply hot air from the outside of the outer tub to the inside of the drum. In addition, the supply of hot air from the first air supply port and the supply of hot air from the second air supply port are simultaneously performed in parallel with the supply of hot air from each air supply port. The warm air supplied from the first air supply port to the inside of the outer tub and the second air to the inside of the outer tub The ratio of the hot air supplied from the air inlet, so as to vary in accordance with the progress of the drying cycle, more than the amount of air supplying amount wind supplied from the first air supply port from said second air supply port Then, the drying process is started, and the amount of air supplied from the second air supply port is increased as the drying process progresses .

Schematic of the in-flight structure showing the first embodiment Schematic diagram of in-flight structure with different operating states Action diagram Perspective view from the front of the internal structure from the base Perspective view from the back of the internal structure from the base Schematic diagram showing the structure of the heat pump together with the structure of the ventilation path Enlarged perspective view of the air volume adjustment damper FIG. 1 equivalent diagram showing the second embodiment 2 equivalent diagram Action explanatory diagram showing the third embodiment FIG. 2 equivalent diagram showing the fourth embodiment

Hereinafter, a first embodiment applied to a drum type washing and drying machine will be described with reference to FIGS.
First, FIGS. 4 and 5 show the in-machine structure 2 from the base 1 of the drum type washing and drying machine. An outer box (not shown) is coupled to the base 1 so as to cover the in-machine structure 2. ing. As shown in FIGS. 1 and 2, the in-machine structure 2 mainly includes a water tank 3. The water tank 3 has a horizontal cylindrical shape whose axial direction is front and rear, and is elastically supported by a pair of left and right suspensions 4 shown in FIGS. Accordingly, the water tank 3 has a high front portion and a low rear portion.

  A motor 5 shown in FIG. 5 is attached to the back of the water tank 3. In this case, the motor 5 is, for example, a direct current brushless motor and has an outer rotor type. A rotating shaft (not shown) is inserted into the water tank 3.

  A drum 6 shown in FIGS. 4, 1, and 2 is accommodated in the water tank 3. This drum 6 also has a horizontal cylindrical shape whose front and rear are axial, and by attaching it to the tip of the rotating shaft of the motor 5 at the center of the rear, the drum 6 has an upwardly inclined shape coaxial with the water tank 3. I support it. As a result, the drum 6 is rotated directly by the motor 5, so the drum 6 is a rotating tub, the water tub 3 is an outer tub containing the drum 6, and the motor 5 It functions as a drum driving device that rotates.

A plurality of small holes 7 shown in FIG. 4 are formed over the entire area on the peripheral side portion (body portion) of the drum 6 and a plurality of baffles 8 for picking up clothes are provided (only one is shown).
In addition, although not shown, the water tank 3 includes a water supply device including a water supply valve for supplying water from the inside of the water tank 3 to the inside of the drum 6 and a drain valve for discharging the water in the water tank 3 from the drum 6 to the outside. The first drainage device is provided.

  On the other hand, a heat pump unit 9 shown in FIGS. 5, 1, and 2 is disposed with a blower fan 10 in the rear lower portion of the outer box that is behind the water tank 3. The heat pump unit 9 includes a compressor 13 with an accumulator 12 shown in FIG. 6, a condenser 14, a throttle valve 15 that is a throttle, and an evaporator 16 disposed in a unit case 11. The compressor 13, the condenser 14, the throttle valve 15, and the evaporator 16 are connected in order as shown in FIG. 6 to constitute a heat pump (refrigeration cycle) 17. The heat pump 17 is filled with a refrigerant, and in the unit case 11, although not shown in detail, an air passage passing through the condenser 14 and the evaporator 16, a compressor 13 and a throttle valve 15 are arranged. The space is separated by a partition wall.

  An inlet 18 connected to the air path passing through the condenser 14 and the evaporator 16 is formed in the upper portion of the left end portion of the unit case 11 in FIGS. 5, 1, and 2. Is connected to the exhaust duct 19 for the water tank 3. The exhaust duct 19 is composed of an upper exhaust duct 19a that is a first exhaust duct and a rear exhaust duct 19b that is a second exhaust duct, and the rear exhaust duct 19b of the exhaust duct 19 is arranged on the back of the water tank 3 in the vertical direction. The lower end portion of the unit case 11 is connected to the air inlet 18.

  The upper exhaust duct 19a is disposed in the upper part of the outer peripheral portion of the water tank 3 so as to be oriented in the front-rear axial direction, and the upper end portion of the rear exhaust duct 19b is connected to the rear end portion thereof. A filter storage portion 20 that opens upward is provided in the middle portion of the upper exhaust duct 19a. The filter storage portion 20 stores the filter 21 shown in FIGS. Is supposed to capture. The front end portion of the upper exhaust duct 19a is connected to an exhaust port 23 formed at the front portion of the upper portion of the water tank 3 through a bellows-shaped duct joint 22 shown in FIGS.

  The blower fan 10 is provided with a blower blade 10b shown in FIGS. 1, 2 and 6 inside a casing 10a, and a motor 10c for rotationally driving the blower blade 10b is disposed outside the casing 10a as shown in FIG. The casing 10a is arranged on the right side of the unit case 11 in FIG. 5 and the inlet (not shown) of the casing 10a is connected to the condenser 14 and the evaporator 16 of the unit case 11. It is connected with the exit part (not shown) of the air passage which passes. The casing 10a has an outlet 10d at the top, and the outlet 10d is connected to the lower end of the air supply duct 25 via a bellows-shaped duct joint 24.

  The air supply duct 25 is composed of a first air passage 25a and a second air passage 25b, and the first air passage 25a is disposed on the back of the water tank 3, and a lower base end portion is provided. Is connected to the outlet 10d of the casing 10a through a duct joint 24. On the other hand, a first air supply port 26 is formed in the rear part of the water tank 3, particularly in the upper part of the rear end plate part, and the first air supply port 26 is located above the first air passage 25 a. The tip of the is communicated.

  Here, the duct joint 24 has a straight shape extending upward from the outlet 10d directed upward in the casing 10a of the blower fan 10, and therefore blows air in the radial direction of the drum 6. On the other hand, the first air passage 25 a of the air supply duct 25 is bent along the outer peripheral portion of the back portion of the water tank 3, and blows air in the generally circumferential direction of the drum 6.

  The second air passage 25b is branched from a bent portion at the top of the first air passage 25a via a box-shaped air flow adjustment trap 27, that is, the first air passage 25a and the second air passage 25b. The second air passage 25b extends from the air flow adjustment trap 27 to the upper part of the outer peripheral portion of the drum 6 and extends in the front-rear axial direction. The part is bent into a crank shape and bent. Therefore, the second air passage 25 b receives the warm air sent from the blower fan 10 in the radial direction of the drum 6 and passes it in the axial direction of the drum 6.

  Thus, it has the 1st air path 25a and the 2nd air path 25b on the basis of the ventilation fan 10 arrange | positioned in the back of the water tank 3, The 1st air path 25a of them is the ventilation fan 10's The second air passage 25b extends in the axial direction while being bent in the circumferential direction with respect to the blowing direction (upward).

  In the second air passage 25b, the foremost part is a second air supply port 28 that penetrates the upper part of the front edge of the water tank 3 and faces the inside of the water tank 3, and thus the front part of the water tank 3 A second air supply port 28 is formed in the second air supply port 28, and the second air passage 25 b is connected to the second air supply port 28. On the other hand, the first air passage 25a is connected to the first air supply port 26 as described above, and between the first air supply port 26 and the second air supply port 28, The exhaust port 23 is located.

  The above-described duct joint 22, exhaust duct 19 (upper exhaust duct 19a, rear exhaust duct 19b), air passage through the condenser 14 and evaporator 16 of the unit case 11, the blower fan 10 (casing 10a), the duct joint 24, A ventilation path 29 that connects the exhaust port 23 of the water tank 3 to the first and 26th air supply ports 26 and 28 by the air supply duct 25 (the first air passage 25a and the second air passage 25b). Is configured.

FIG. 6 schematically shows the ventilation path 29 together with the heat pump 17, and in addition, an exhaust temperature sensor 30 provided in the exhaust duct 19 and an air supply temperature sensor provided in the air supply duct 25. 31 is also shown.
1 and 2 schematically show the above-described in-machine structure 2.

  In the air flow path 29, the air volume adjusting trap 27 provided at the branch portion of the first air path 25a and the second air path 25b of the air supply duct 25 as described above is provided in FIGS. The air volume adjustment damper 32 shown in FIG. More specifically, the air volume adjusting damper 32 is provided inside the air volume adjusting trap 27 so as to rotate up and down with the one side portion 32a as a fulcrum. A geared motor 33 disposed outside the air volume adjusting trap 27 is provided. As a drive source, it is rotated. As a result of the rotation, the air volume adjusting damper 32 adjusts the opening degree of the opening 27a (see FIGS. 1 and 2) connected to the second air path 25b from the first air path 25a of the air supply duct 25 in the air volume adjusting trap 27. By changing the air volume from the first air path 25a to the second air path 25b through the opening 27a, the air volume passing through the first air path 25a and the air volume passing through the second air path 25b are changed. The ratio is adjusted.

Next, the operation of the washing / drying machine having the above configuration will be described.
In the washing and drying machine having the above-described configuration, when a standard operation course is started, a washing process, a dehydrating process, and a drying process are sequentially performed.
The washing process includes a washing operation and a rinsing operation. In the washing operation, an operation of supplying water from the water tank 3 into the drum 6 by a water supply device (not shown) is performed, and then the motor 5 is operated. The drum 6 is alternately rotated in both forward and reverse directions at a low speed. Thereby, the clothes accommodated in the drum 6 are raised and lowered (tumbled), stirred, and washed. Thereafter, a drain valve (not shown) is opened, and the water in the drum 6 and the water tank 3 is discharged outside the apparatus.

In the rinsing operation, the same operation as the above-described washing operation is performed, whereby the clothes after washing are raised and lowered, agitated, and rinsed.
When the washing process ends, the dehydration process is performed next. In this dehydration process, the drum 6 is rotated at a high speed in one direction, thereby centrifugally dewatering the clothes after washing. Discharged.

  When the dehydration process is completed, a drying process is then performed. In this drying process, the blower fan 10 is operated while the drum 6 is rotated in both forward and reverse directions at a low speed. Thereby, the air in the drum 6 is passed through the duct joint 22 and the exhaust duct 19 in order from the exhaust port 23 of the water tank 3 by the operation of the blower fan 10 while the dehydrated clothes are raised and lowered and stirred. To be issued. The air discharged out of the water tank 3 then passes through the air passage passing through the condenser 14 and the evaporator 16 of the unit case 11, the blower fan 10, the duct joint 24, and the air supply duct 25 in this order, that is, the air passage 29. Then, the air is blown into the water tank 3 from the first air supply port 26 and the second air supply port 28 of the water tank 3 and returned to the drum 6.

  At this time, the operation of the compressor 13 of the heat pump 17 is started. As a result, the refrigerant sealed in the heat pump 17 is compressed to become a high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant flows into the condenser 14, and the air path passing through the condenser 14 and the evaporator 16 in the unit case 11. Exchange heat with air. As a result, the air in contact with the condenser 14 in the unit case 11 is heated, and conversely, the temperature of the refrigerant is lowered and liquefied. The liquefied refrigerant then passes through the throttle valve 15 and is depressurized, and then flows into the evaporator 16 and vaporizes. Thereby, the evaporator 16 cools the air which contacts the evaporator 16 in the unit case 11. The refrigerant that has lost its heat by cooling the air in contact with the evaporator 16 then returns to the compressor 13.

  As a result, the air that has flowed from the water tank 3 into the air passage passing through the condenser 14 and the evaporator 16 in the unit case 11 in the ventilation passage 29 by the operation of the blower fan 10 is cooled by the evaporator 16 and dehumidified. And then heated by the condenser 14 to warm air. Then, the warm air is blown into the water tank 3 from the first air supply port 26 and the second air supply port 28 of the water tank 3 through the rear stage (air supply duct 25) of the air passage 29, and is sent into the drum 6. Can be put. Therefore, the ventilation path 29, the blower fan 10, and the condenser 14 of the heat pump 17 function as the hot air supply device 34.

The warm air sent into the drum 6 comes into contact with the clothes in the drum 6 to remove its moisture, and then passes from the exhaust port 23 of the water tank 3 to the front stage of the air passage 29 (exhaust duct 19) to the unit case 11 It flows into the air path which passes through the condenser 14 and the evaporator 16 inside.
In this way, air circulates between the air path passing through the condenser 14 and the evaporator 16 in the unit case 11 and the water tank 3 having the drum 6, whereby the clothes in the drum 6 are dried.

  In this drying process, the ratio of the warm air supplied from the first air supply port 26 to the inside of the water tank 3 and the warm air supplied from the second air supply port 28 to the inside of the water tank 3 is determined. , I try to change as the process progresses. Specifically, the amount of air supplied from the first air supply port 26 is made larger than the amount of air supplied from the second air supply port 28 to start the drying process. As the stroke progresses, the amount of air supplied from the second air supply port 28 is increased to be larger than the amount of air supplied from the first air supply port 26.

  More specifically, as shown in FIG. 3, in this drying process, the drying rate of the clothes is determined from the detected temperature difference between the supply air temperature sensor 31 and the exhaust temperature sensor 30 in the ventilation path 29, and the drying process is performed. The air volume supplied from the first air supply port 26 is set to 80% of the total air volume from the start to the middle stage where the determined drying rate of the clothes reaches nearly 90%, and supplied from the second air supply port 28. The amount of air to be supplied is the remaining 20% of the total air amount, and the amount of air supplied from the first air supply port 26 is made larger than the amount of air supplied from the second air supply port 28.

  Then, after the determined drying rate of the garment reaches 90 [%], the air volume supplied from the first air supply port 26 is equal to the total air volume at the final stage until the drying rate of the garment reaches 100 [%]. 20%, the amount of air supplied from the second air inlet 28 is set to the remaining 80% of the total air amount, the amount of air supplied from the second air inlet 28 is increased, and the first air inlet 26 The air volume to be supplied from is increased.

This change in the air volume is caused by rotating the air volume adjusting damper 32 provided at the branching portion of the first air path 25 a and the second air path 25 b in the ventilation path 29 by the geared motor 33. This is performed by changing the opening degree of the opening 27a connected from the first air passage 25a to the second air passage 25b. The amount of air supplied from the first air inlet 26 is changed from the second air inlet 28. When the air volume to be supplied is increased, as shown in FIG. 1, the opening degree of the opening 27 a is reduced, so that the first air volume reaches the second air inlet 28 through the second air passage 25 b. When increasing the amount of air that reaches the first air supply port 26 through the air passage 25a and increasing the amount of air supplied from the second air supply port 28, as shown in FIG. By increasing the opening, through the second air passage 25b Leading to 2 of the air supply port 28 to increase the air volume. The increase in the amount of air that reaches the second air supply port 28 through the second air passage 25b may be one time, may be stepwise, and may be continuous.
After this, the drying process is finished and the standard driving course is finished.

  As described above, in the washing and drying machine having the above-described configuration, the first air supply port 26 for supplying the hot air to the inside of the drum 6 is formed at the rear part of the water tank 3, and the hot air is also supplied to the inside of the drum 6. A second air supply port 28 is formed in the front part of the water tank 3, and the warm air supplied from the first air supply port 26 to the inside of the water tank 3 and the second air supply port 28 in the water tank 3. The ratio of the warm air supplied from the air is changed according to the progress of the drying process.

  Thus, warm air can be supplied into the water tank 3 not only from the rear but also from the front, so that not only the clothing positioned at the rear of the drum 6 but also the clothes positioned at the front of the drum 6 It can be dried at the same time and the clothes can be dried evenly. Moreover, since it is also possible to avoid excessively drying only the clothes located at the rear part in the drum 6, the clothes can be dried without causing damage such as shrinkage. Furthermore, since warm air can be supplied to the rear part and the front part in the drum 6 according to the progress of the drying process, it can be dried without generating wrinkles, and the finish can be improved.

  In addition, the supply of warm air from the rear part of the water tank 3 and the supply from the front part of the water tank 3 to the inside of the drum 6 change the ratio according to the progress of the drying process. It is not switched according to the progress of the drying process as described, but the supply from the first air supply port 26 and the supply from the second air supply port 28 are performed in parallel. The drying speed can be increased, i.e., it does not take time to complete the drying.

  In particular, in the above configuration, the drum 6 is provided in an upwardly inclined shape, and in this case, as described above, clothes that become heavy due to moisture such as cotton-based underwear or socks are drum 6. While it continues to rotate, it tends to gather at the rear, which is the lower part of the drum 6, while light clothing such as a shirt and a long-sleeved shirt tends to gather at the front, which is the upper part of the drum 6. On the other hand, in the thing of the said structure, the air volume supplied to the inside of the water tank 3 from the 1st air supply port 26, ie, the rear part of the water tank 3, is supplied from the 2nd air supply port 28, ie, the front of the water tank 3. The amount of air supplied from the section to the inside of the water tank 3 is increased, and the drying process is started. This makes it possible to efficiently dry clothes that are likely to gather at the rear, which is the lower part of the drum 6, and become heavy due to moisture, such as underwear and socks with high moisture content, from the beginning of the drying process.

  In addition, in the drum 6 provided in an upwardly inclined shape, light clothing such as a shirt or a long-sleeved shirt, which is easy to touch when worn and hates the generation of wrinkles, is already in the drum. The amount of air supplied from the second air supply port 28 as the drying process progresses, while being easily gathered at the front part of the door and twisted between the rotating drum and the stationary door and easily wrinkled. Try to increase.

  In order to perform drying with good finish without wrinkles, it is important to execute drying control according to the drying rate of the clothes. When clothes are dried, even if the clothes are wrinkled, the operating section where the clothes are dried and the wrinkles can be removed while stirring is not important. What is important is that when the drying rate of the garment progresses, especially when the garment is wrinkled between about 90% and 100%, the wrinkle is likely to be fixed and dry with a poor finish. How to dry this section.

  Therefore, as described above, with respect to the drum 6 provided in the upwardly inclined shape, from the time when the drying rate of the garment is close to 90% as the drying process proceeds, the second air supply port 28 The amount of air to be supplied is increased, so that light clothing such as shirts and long-sleeved shirts that are easy to gather at the front part of the drum 6 and are easy to touch and hate wrinkles when worn are better than before. It becomes possible to dry at a high speed, and it is possible to prevent the wrinkle from being fixed and to improve the finishing condition by keeping the drying progressing with wrinkles in a short time.

  Moreover, in the thing of the said structure, the exhaust port 23 for discharging | emitting the warm air supplied in the inside of the drum 6 to the exterior of the water tank 3 is made into the 1st air supply port 26 and the 2nd air supply port 28 of the water tank 3. It forms in the part between. Thereby, both the warm air supplied from the first air supply port 26 and the warm air supplied from the second air supply port 28 into the water tank 3 can be efficiently passed through the drum 6 and applied to the clothes. , Uneven drying of clothes can be further reduced.

  Further, the above configuration includes the first air passage 25a connected to the first air supply port 26 and the second air passage 25b connected to the second air supply port 28. An air volume adjusting damper 32 that adjusts the ratio of the air volume passing through both air paths is provided at a branch portion of the two air paths 25a and 25b. Thereby, the air volume adjustment of the warm air supplied from the first air supply port 26 and the warm air supplied from the second air supply port 28 into the water tank 3 can be easily and appropriately performed.

  In addition, in the above configuration, the hot air supply device 34 is provided with the blower fan 10 behind the water tank 3 to supply the hot air from the outside of the water tank 3 to the inside of the drum 6, and the first air Of the passage 25 a and the second air passage 25 b, the second air passage 25 b is disposed on the outer peripheral portion of the drum 6 so as to extend in the front-rear axial direction, and the temperature that the blower fan 10 sends in the radial direction of the drum 6. I try to pass the wind. As a result, it is possible to improve the place where the circulation of the hot air tends to increase because the piping is extended from the rear to the front of the water tank 3, and the hot air is supplied from the front of the water tank 3 to the inside with less resistance. The clothes located in the front part in the drum 6 can be efficiently dried.

In contrast, FIGS. 8 to 11 show the second to fourth embodiments. The same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Only the part is described.
[Second Embodiment]
In the second embodiment shown in FIGS. 8 and 9, the method of adjusting the air volume by the operation of the air volume adjusting damper 32 is different from that of the first embodiment.

  The first embodiment is suitable for a case where a large cross-sectional area of the second air passage 25b of the air supply duct 25 can be secured. In this case, as is apparent from the change from FIG. 1 to FIG. Since the amount of air passing through the second air passage 25b can be increased in the direction in which the flow resistance of the second air passage 25b is reduced by the damper 32, the power consumption of the blower fan 10 can be reduced, and the energy can be saved.

  On the other hand, the second embodiment is suitable for a case where a large cross-sectional area of the second air passage 25b of the air supply duct 25 cannot be secured. In this case, the change from FIG. 8 to FIG. 9 is apparent. Furthermore, the air volume passing through the second air path 25b is increased by reducing the air volume reaching the first air inlet 26 through the first air path 25a by the air volume adjusting damper 32. Thereby, even when it is not possible to ensure a large cross-sectional area of the second air passage 25b, it is possible to reliably increase the amount of air passing through the second air passage 25b.

[Third Embodiment]
In the third embodiment shown in FIG. 10, the amount of air blown by the blower fan 10 is controlled in the drying process. Specifically, after the clothes drying rate reaches 90 [%], the air blowing amount by the blower fan 10 is increased until the clothes drying rate reaches 100 [%]. The amount to be increased is, for example, 20 [%].

  Thus, as is apparent from the difference (broken line) between the “drying rate” and “evaporation rate” shown in FIG. Light clothing such as shirts and long-sleeved shirts that are prone to be wrinkled can be dried at a faster speed, shortening the drying process with wrinkles in a shorter time, Wrinkles are prevented from being fixed, and the finish can be further improved.

Moreover, in the thing of the said structure, warm air is produced | generated with the heat pump 17, and the ratio of the air volume with respect to the heat exchange amount with the heat pump 17 increases by increasing the ventilation volume by the ventilation fan 10, FIG. As can be seen from the difference (broken line) in the “water tank blowing air temperature”, it is possible to supply low-temperature hot air, so that the effect of stretching the wrinkles of the clothing can be obtained and the finish is further improved. be able to.
Furthermore, in this case, by temporarily stopping the increase in the amount of air blown by the blower fan 10 until the drying rate of the clothing reaches 100 [%] after the drying rate of the clothing reaches 90 [%], It is possible to suppress an increase in noise and a decrease in energy saving.

[Fourth Embodiment]
In the fourth embodiment shown in FIG. 11, the auxiliary air fan 41 is provided for the hot air supply device 34 to supply hot air from the outside of the water tank 3 to the inside of the drum. More specifically, the auxiliary blower fan 41 is provided in the middle of the second air passage 25b. The auxiliary blower fan 41 includes a casing 41a, a blower blade 41b located inside the casing 41a, and a blower blade. It consists of a motor (not shown) that rotationally drives 41b.

  By doing in this way, like the said 3rd Embodiment, especially after the drying rate of clothing reaches 90 [%], the ventilation volume until the drying rate of the clothing reaches 100 [%], It can be increased by the auxiliary blower fan 41, and the same effect as the third embodiment can be obtained. Therefore, this auxiliary blower fan 41 may be provided in the middle of the first air passage 25a.

The warm air may be generated not by a heat pump but by an electric heater. In addition, there may be no washing and dehydrating functions.
In addition, although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 3 is a water tank (outer tank), 5 is a motor (drum driving device), 6 is a drum, 10 is a blower fan, 23 is an exhaust port, 25a is a first air path, 25b is a second air path, Reference numeral 26 denotes a first air supply port, 28 denotes a second air supply port, 32 denotes an air volume adjusting damper, 34 denotes a warm air supply device, and 41 denotes an auxiliary air blowing fan.

Claims (5)

A drum that is provided in an upwardly inclined shape and accommodates clothing;
An outer tank containing this drum,
A drum driving device for rotating the drum;
A hot air supply device for supplying hot air to the inside of the drum from the outside of the outer tub,
A first air supply port for supplying the hot air is formed in the rear portion of the outer tub, and a second air supply port for supplying the hot air is formed in the front portion of the outer tub,
A first air passage that is continuous with the first air supply port; and a second air passage that is continuous with the second air supply port, and a branch portion between the first and second air passages. An air volume adjustment damper that adjusts the ratio of the air volume that passes through both air paths is installed.
The hot air supply device includes an auxiliary air fan to supply hot air from the outside of the outer tub to the inside of the drum,
While supplying hot air from the first air supply port and supplying hot air from the second air supply port simultaneously with supplying hot air from each air supply port , The ratio of the warm air supplied from the first air supply port to the inside of the outer tub and the hot air supplied from the second air supply port to the inside of the outer tub is determined according to the progress of the drying process. It is changed by adjusting the opening of the air volume adjustment damper ,
The amount of air supplied from the first air supply port is made larger than the amount of air supplied from the second air supply port, and the drying process is started.
As the drying process proceeds, the amount of air supplied from the second air supply port is increased .   An exhaust port for discharging warm air supplied to the inside of the drum to the outside of the outer tub is formed at a portion between the first air supply port and the second air supply port of the outer tub. The clothes dryer according to claim 1. Comprising a blower fan for the hot air supply device to supply the internal hot air of the drum from the outside of the outer tub, according to claim 1 or characterized in that the air volume due to the blowing fan to control the drying step 2. The clothes dryer according to 2 . In order for the hot air supply device to supply hot air from the outside of the outer tub to the inside of the drum, a blower fan is provided at the rear of the outer tub, and a first air passage connected to the first air supply port, and a second air passage And a second air passage that extends in the front-rear axial direction on the outer periphery of the drum, and the blower fan is arranged in the radial direction of the drum. The clothes dryer according to any one of claims 1 to 3, wherein the clothes dryer is configured to receive warm air sent to the clothes. A drum that is provided in an upwardly inclined shape and accommodates clothing;
An outer tank containing this drum,
A drum driving device for rotating the drum;
A hot air supply device for supplying hot air to the inside of the drum from the outside of the outer tub,
A first air supply port for supplying the hot air is formed in the rear portion of the outer tub, and a second air supply port for supplying the hot air is formed in the front portion of the outer tub,
The hot air supply device includes an auxiliary air fan to supply hot air from the outside of the outer tub to the inside of the drum,
While supplying hot air from the first air supply port and supplying hot air from the second air supply port simultaneously with supplying hot air from each air supply port , The ratio of the warm air supplied from the first air supply port to the inside of the outer tank and the warm air supplied from the second air supply port to the inside of the outer tank is changed according to the progress of the drying process. the way,
The amount of air supplied from the first air supply port is made larger than the amount of air supplied from the second air supply port, and the drying process is started.
As the drying process proceeds, the amount of air supplied from the second air supply port is increased .

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