WO2012120827A1

WO2012120827A1 - Clothes dryer

Info

Publication number: WO2012120827A1
Application number: PCT/JP2012/001336
Authority: WO
Inventors: 英史松井; 松田　眞一
Original assignee: パナソニック株式会社
Priority date: 2011-03-04
Filing date: 2012-02-28
Publication date: 2012-09-13

Abstract

This clothes dryer is equipped with: a motor (3) for driving the rotation of a rotating drum (1); a heat pump device (6) wherein a compressor (7), a radiator (8), a throttle (9) and a heat absorber (10) are connected by a conduit line so as to circulate a refrigerant; an air-blowing fan (12) for blowing drying air into the rotating drum (1); and an air flow path (13) that circulates drying air exhausted from the rotating drum (1) to the heat absorber (10), then through the radiator (8) to the rotating drum (1). The motor (3) and the compressor (7) are disposed in the bottom of the main body below the rotating drum (1). The motor (3) and the compressor (7) are disposed on either side of a vertical plane that comprises the rotation axis (5) of the rotating drum (1).

Description

Clothes dryer

The present invention relates to a clothes dryer for drying clothes and the like.

Conventionally, as shown in FIG. 10, this type of clothes dryer generally uses a heat pump device as a heat source for drying clothes and circulates drying air. Hereinafter, the configuration will be described. A rotating drum 53 that rotates about a horizontal axis 52 as a central axis is disposed in the outer case 51. A clothing insertion port 54 formed on the front surface of the rotating drum 53 opens to the front surface of the outer case 51 and is opened and closed by a door 55. A circulation air passage 57 including a drying chamber 56 set inside the rotary drum 53 is formed in the outer case 51.

The circulation air passage 57 has a drying chamber 56, a blower chamber 58, a heat exchange chamber 59, and the like on the way. The air in the drying chamber 56 flows from the exhaust port 60 provided on the back wall of the rotary drum 53 to the blower chamber 58, passes through the heat exchange chamber 59, and enters the drying chamber 56 from the blowout port 61 provided in front of the drying chamber 56. And circulate.

A fan 62 is provided in the air blowing chamber 58. Further, in the heat exchange chamber 59, a heat absorber 63 is disposed on the upstream side, and a radiator 64 is disposed on the downstream side of the heat absorber 63. The heat absorber 63 and the heat radiator 64 constitute a heat pump device including a compressor 65 and an expansion mechanism 66 such as a capillary tube. The high-humidity air that has flowed out of the drying chamber 56 is cooled and dehumidified by the heat absorber 63 to become low-temperature and low-humidity, and is heated by the radiator 64 to become high-temperature and low-humidity dry air. The dehumidified water dehumidified by the heat absorber 63 is drained out of the outer case 51 through a drain port 67 provided at the bottom.

The high-temperature and low-humidity dry air is supplied from the outlet 61 to the drying chamber 56 and used for drying clothes. A filter 68 is attached to the inner wall of the rotary drum 53 that forms a part of the circulation air passage 57 so as to cover the exhaust port 60, and the lint that comes out of the clothes 30 is collected. Arrow C indicates the flow of wind. The motor 69 rotationally drives the rotary drum 53 and the fan 62. The rotational driving force of the motor 69 is transmitted to the rotating drum 53 via the belt 70 and also transmitted to the fan 62 via the belt 71. The motor 69 is attached to the exterior case 51 above the rotating drum 53 (see, for example, Patent Document 1).

Also, a washing / drying machine in which a motor for driving the rotating drum is provided in the lower part of the water tank and the compressor of the heat pump device is fixed to the upper part of the casing is also considered (for example, see Patent Document 2).

However, in the conventional configuration, when the rotating drum 53 swings due to rotation during the drying operation, the swing is transmitted to the motor 69 that drives the rotating drum 53, and the motor 69 having a large mass is an exterior case above the rotating drum 53. Therefore, there is a problem that vibration and noise of the outer case 51 are increased. Further, in the configuration in which the motor for driving the rotating drum is provided in the lower part of the water tank, the rotating drum and the motor are largely swung integrally, and a compressor having a large mass is attached to the casing above the rotating drum. There was a problem that the vibration and noise of the casing increased.

JP 7-178289 A JP 2004-135715 A

The clothes dryer according to the present invention includes a rotating drum provided rotatably in a main body, a motor that rotationally drives the rotating drum, a pipe line so that a refrigerant circulates through a compressor, a radiator, a throttle portion, and a heat absorber. The heat pump device connected in the above, a blower fan for blowing drying air into the rotating drum, and a blowing path for circulating the drying air discharged from the rotating drum from the heat absorber to the rotating drum through the radiator. The motor and the compressor are installed at the bottom of the main body below the rotating drum. The motor and the compressor are distributed on both sides of the vertical plane including the rotating shaft of the rotating drum.

This makes it possible to install the motor and the compressor in a balanced manner in the main body below the rotating drum, and to reduce the deviation between the center of gravity of the entire main body and the vertical plane including the rotating shaft of the rotating drum. For this reason, vibration and noise during the drying operation can be reduced. In addition, the low power consumption of the motor is reduced due to low vibration, and the arrangement position of the motor and the compressor is separated, so that the thermal adverse effect of the motor and the compressor is reduced to suppress the temperature rise of the compressor. Can do. As a result, the compressor can be driven with a larger output, and the performance of the heat pump device can be improved.

FIG. 1 is a system diagram of a clothes dryer according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of the clothes dryer according to the first embodiment of the present invention. FIG. 3 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer in the first embodiment of the present invention. FIG. 4 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer according to the second embodiment of the present invention. FIG. 5 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer in Embodiment 3 of the present invention. FIG. 6 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer according to the fourth embodiment of the present invention. FIG. 7 is a system diagram of the clothes dryer in the fifth embodiment of the present invention. FIG. 8 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer according to the fifth embodiment of the present invention. FIG. 9 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer in the sixth embodiment of the present invention. FIG. 10 is a cross-sectional view of a conventional clothes dryer.

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)
FIG. 1 is a system diagram of a clothes dryer according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of the clothes dryer according to the first embodiment of the present invention. FIG. 3 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer in the first embodiment of the present invention.

1 to 3, the rotary drum 1 for receiving and drying the clothing 30 is rotatably provided in the main body 2 of the clothing dryer. The rotating drum 1 is driven to rotate about a rotating shaft 5 provided in the front-rear horizontal direction of the main body 2 via a drum belt 4 by a motor 3.

The heat pump device 6 is connected to the compressor 7, the radiator 8, the throttle unit 9, and the heat absorber 10 through a pipe line 11 so that the refrigerant circulates. The compressor 7 compresses the refrigerant. The radiator 8 radiates the heat of the high-temperature and high-pressure refrigerant compressed by the compressor 7. The throttle unit 9 is configured by a capillary tube or the like for reducing the pressure of the high-pressure refrigerant. In the heat absorber 10, the refrigerant whose pressure has been reduced to a low pressure takes heat from the surroundings. Note that the arrow A indicates the flow of the refrigerant.

The blower fan 12 is attached to the shaft of the motor 3. The drying air blown by the blower fan 12 is guided to the heat absorber 10 and the radiator 8 of the heat pump device 6 from the rotary drum 1 as a drying chamber containing the clothes 30 through the blower passage 13. The heat absorber 10 cools and dehumidifies the drying air that has become humid due to contact with the clothes 30 in the rotary drum 1. The radiator 8 heats the drying air that has been cooled and dehumidified by the heat absorber 10 to a low temperature and low humidity, and supplies the air to the rotating drum 1.

At least one filter 14 is attached to the outflow side from the rotary drum 1 and collects lint and dust generated from the clothes 30 in the drying air. Condensed water of the drying air generated by heat exchange in the heat absorber 10 is pumped to a drain tank (not shown) provided above the main body 2 by a drain pump 15 provided in the vicinity of the heat absorber 10. The clothes 30 are put in and out from the door 16 that can be opened and closed provided on the front surface 2 a of the main body 2.

The motor 3 is disposed in the vicinity of the lower first side surface 2b in the main body 2, and is provided near the back surface 2d of the main body 2. Further, the compressor 7 is disposed in the vicinity of the second side surface 2c facing the first lower side surface 2b in the main body 2, and is positioned in the vicinity of the corners of the second side surface 2c and the back surface 2d. It is arranged like this.

The motor 3 and the compressor 7 are installed at the bottom of the main body 2 below the rotary drum 1. In addition, the motor 3 and the compressor 7 are distributed at a predetermined distance on both sides of a vertical plane including the rotating shaft 5 of the rotating drum 1. Further, the gravity center position 3 a of the motor 3 and the gravity center position 7 a of the compressor 7 are configured to be located on the opposite sides with respect to a vertical plane including the rotation shaft 5 of the rotary drum 1.

The heat radiator 8, the narrowed portion 9 and the heat absorber 10 are disposed in the vicinity of the compressor 7, and the heat pump device 6 is configured compactly. The center of gravity 6a of the entire heat pump device 6 including the radiator 8 and the heat absorber 10 is opposite to the center of gravity 3a of the motor 3 that rotationally drives the rotating drum 1 with respect to the vertical plane including the rotating shaft 5 of the rotating drum 1. It is comprised so that it may be located in. It is preferable that the center of gravity position 6 a of the entire heat pump device 6 and the center of gravity position 3 a of the motor 3 are substantially symmetrical with respect to a vertical plane including the rotating shaft 5 of the rotating drum 1. Thereby, the heat pump device 6 and the motor 3 can be arranged in a more balanced manner.

The drying detector 17 is provided on the front surface of the rotary drum 1. The dryness detection unit 17 detects the dryness of the garment 30 from the resistance value of the electrode in contact with the garment 30 stirred in the rotary drum 1. The hot air temperature detector 18 is installed between the radiator 8 and the rotating drum 1 in the air passage 13. The hot air temperature detector 18 detects the temperature of the drying air flowing from the radiator 8 before supplying heat to the clothing 30 to the rotary drum 1.

The control unit 19 controls the motor 3, the compressor 7, the blower fan 12, and the like based on information such as the drying detection unit 17 and the hot air temperature detection unit 18, and performs a drying operation. The thrown clothes 30 are dried. Note that arrow B indicates the flow of drying air.

The operation and action of the clothes dryer configured as described above will be described below. First, an object to be dried, such as clothing 30, is opened in the door 16 and placed in the rotating drum 1, and when the drying operation is started, the motor 3 rotates, the rotating drum 1 and the blower fan 12 rotate, and the flow of drying air ( Arrow B) occurs. The drying air takes moisture from the clothes 30 in the rotary drum 1 and becomes humid, passes through the filter 14, passes through the blower path 13, and is guided to the heat absorber 10 of the heat pump device 6.

The drying air deprived of heat by the low-temperature refrigerant in the heat absorber 10 is dehumidified and then carried to the radiator 8. The dehumidified drying air is heated in the radiator 8 by heat radiation from the refrigerant, which is heated by adding heat from the compressor 7 to the heat absorbed by the heat absorber 10. The heated drying air is circulated again into the rotating drum 1. The clothes 30 are dried by repeating the above operation.

The water dehumidified by cooling the drying air by the heat absorber 10 is pumped and stored in a drain tank (not shown) provided above the main body 2 by the drain pump 15. As the garment 30 is dried, lint is generated from the garment 30 by the stirring of the garment 30 by the rotating drum 1. The filter 14 captures and collects frays of the clothes 30 and dust that is mixed in when the clothes 30 are put in.

As described above, in the present embodiment, the motor 3 and the compressor 7 are installed at the bottom of the main body 2 below the rotating drum 1, and the motor is arranged with respect to a vertical plane including the rotating shaft 5 of the rotating drum 1. 3 and the compressor 7 were distributed on both sides. Thus, the motor 3 and the compressor 7 can be installed in a well-balanced manner below the rotating drum 1 of the main body 2, and the deviation between the center of gravity of the entire main body 2 and the vertical plane including the rotating shaft 5 of the rotating drum 1 is reduced. can do. Therefore, vibration and noise during the drying operation can be reduced. In addition, the power consumption of the motor 3 is reduced due to the low vibration, and the arrangement positions of the motor 3 and the compressor 7 are separated from each other, thereby reducing the adverse thermal influence between the motor 3 and the compressor 7 which are both heat sources. Thus, the temperature rise of the compressor 7 can be suppressed. As a result, the compressor can be driven with a higher output, and the performance of the heat pump device 6 can be improved.

Further, the gravity center position 6 a of the heat pump device 6 including the heat absorber 10 and the radiator 8 is opposite to the gravity center position 3 a of the motor 3 that rotationally drives the rotary drum 1 with respect to a vertical plane including the rotation shaft 5 of the rotation drum 1. It was configured to be located on the side. Thereby, piping of the compressor 7, the heat absorber 10, and the heat radiator 8 can be shortened, the heat pump apparatus 6 can be reduced in size, and it can arrange | position compactly in the small space in the main body 2. FIG. Furthermore, the vibration during rotation of the rotary drum 1 can be reduced to reduce the power consumption of the motor 3.

Further, the motor 3 is disposed in the vicinity of the first side surface 2b of the main body 2, and the compressor 7 is disposed in the vicinity of the second side surface 2c facing the first side surface 2b. Thereby, it can arrange | position with sufficient balance in the bottom part in the main body 2, and can reduce the vibration and noise at the time of drying operation. Furthermore, heat dissipation from the first side surface 2b and the second side surface 2c of the main body 2 is promoted, and temperature rises of the motor 3 and the compressor 7 can be suppressed.

Further, the compressor 7 is provided in the corner portion adjacent to the lower second side surface 2c and the rear surface 2d in the main body 2. Thereby, heat generated by the compressor 7 can be efficiently radiated from a plurality of surfaces of the main body 2. Further, the compressor 7 can be disposed in a small space in the main body 2 in a compact manner.

The distance and direction from the vertical plane including the rotation shaft 5 of the rotating drum 1 to the center of gravity position 3a of the motor 3 and the center of gravity position 7a of the compressor 7 are optimally set according to each mass, configuration, and the like. . Similarly, the distance and direction from the center of gravity position 3a of the motor 3 to the center of gravity position 6a of the heat pump device 6 are also optimally set according to the respective masses and configurations.

In the present embodiment, the rotating shaft 5 is in the horizontal direction, but the front surface 2a side of the main body 2 may be tilted forward by 5 to 45 degrees. As a result, the clothes 30 can be easily put into and taken out of the rotary drum 1.

In the present embodiment, the blower fan 12 is directly connected to the shaft of the motor 3. However, the blower fan 12 may be driven through a belt in the same manner as the rotary drum 1 is driven. Thereby, the freedom degree of arrangement | positioning of the ventilation fan 12 increases, and it can be set as the structure which guides the air for drying to the rotating drum 1 by arrange | positioning the ventilation fan 12 close to the back side of the radiator 8. FIG. As a result, the pressure loss of the air blowing path 13 can be reduced.

In the present embodiment, the dehumidified water is stored in the drain tank using the drain pump 15, but a drain outlet may be provided near the heat absorber 10 and discharged to the outside of the main body 2.

In the present embodiment, the hot air temperature detector 18 is provided to detect the temperature of the drying air and control the motor 3, the compressor 7, and the like. However, in the vicinity of the radiator 8 of the heat pump device 6. It is good also as a structure which provides a refrigerant | coolant temperature detection part in the pipe line 11, and estimates warm air temperature with the refrigerant | coolant temperature detected by this refrigerant | coolant temperature detection part.

(Embodiment 2)
FIG. 4 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer in the second embodiment of the present invention. A feature of the present embodiment is that a first cooling fan 20 for cooling the motor 3 is provided on the front surface 2a of the main body 2 on the same side as the motor 3 with respect to a vertical plane including the rotating shaft 5 of the rotating drum 1. That is. An air inlet 21 for introducing outside air into the main body 2 by the first cooling fan 20 is provided on the front surface 2 a of the main body 2. Further, an exhaust port 22 for discharging outside air introduced into the main body 2 to the outside of the main body 2 is provided in the vicinity of the compressor 7. Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the description of the first embodiment is used for the detailed description.

With the above configuration, when the mass of the motor 3 is reduced due to downsizing of the motor 3 and the mass of the compressor 7 is unbalanced, or the distance from the vertical plane of the motor 3 and the compressor 7 is unbalanced. For example, the balance of the center of gravity can be maintained by the first cooling fan 20. Thereby, vibration and noise during the drying operation can be reduced. In addition, the motor 3 can be cooled at a driving temperature due to the downsizing of the motor 3, and the motor 3 can be driven at an appropriate temperature.

Also, the motor 3 and the first cooling fan 20 are disposed on the opposite side of the compressor 7 with a predetermined distance from the vertical plane including the rotating shaft 5 of the rotating drum 1. For this reason, the cooling effect of the motor 3 by the cooling air from the first cooling fan 20 can be enhanced. In addition, by providing the exhaust port 22 in the vicinity of the compressor 7, the cooling air cools the motor 3, and then is discharged from the exhaust port 22 through the outer surface of the rotary drum 1 and the vicinity of the compressor 7. For this reason, the heat of the rotating drum 1 and the compressor 7 can be taken and cooled.

Depriving heat from the rotating drum 1 means that a part of the heat generated by the work when the compressor 7 compresses the refrigerant is discharged out of the refrigeration cycle. Thereby, the refrigerant | coolant temperature difference of the compressor 7 side and the heat absorber 10 side is maintained, and the heat pump apparatus 6 can maintain a highly efficient refrigerating cycle for a long time.

(Embodiment 3)
FIG. 5 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer according to the third embodiment of the present invention. The feature of the present embodiment is that the motor 3 and the compressor 7 are installed at the bottom of the main body 2 below the rotating drum 1, and the motor 3 and the compressor 7 with respect to the vertical line including the center of gravity 1 a of the rotating drum 1. Is disposed at a substantially symmetrical position. Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the description of the first embodiment is used for the detailed description.

The motor 3 is disposed in the vicinity of the lower first side surface 2b in the main body 2, and is provided near the back surface 2d of the main body 2. The compressor 7 is disposed in the vicinity of the second side surface 2 c facing the lower first side surface 2 b in the main body 2, and is provided near the front surface 2 a of the main body 2.

The motor 3 and the compressor 7 are installed at the bottom of the main body 2 below the rotary drum 1, and the motor 3 and the compressor 7 have a predetermined distance on both sides of the vertical line including the center of gravity 1 a of the rotary drum 1. Dispersed and arranged at substantially symmetrical positions. Further, the center of gravity position 3 a of the motor 3 and the center of gravity position 7 a of the compressor 7 are configured to be opposite to each other with respect to a vertical line including the center of gravity 1 a of the rotary drum 1.

The heat radiator 8, the throttle portion 9 and the heat absorber 10 are disposed in the vicinity of the compressor 7, and the heat pump device 6 is configured in a compact manner. The center of gravity 6a of the entire heat pump device 6 including the radiator 8 and the heat absorber 10 is opposite to the center of gravity 3a of the motor 3 that rotationally drives the rotating drum 1 with respect to the vertical line including the center of gravity 1a of the rotating drum 1. Configured to be located. If the center of gravity 6a of the entire heat pump device 6 and the center of gravity 3a of the motor 3 are substantially symmetrical with respect to the vertical line including the center of gravity 1a of the rotating drum 1, the heat pump 6 and the motor 3 are arranged in a more balanced manner. can do.

As described above, in the present embodiment, the motor 3 and the compressor 7 are installed at the bottom of the main body 2 below the rotating drum 1, and the motor 3 with respect to the vertical line including the center of gravity 1 a of the rotating drum 1. And the compressor 7 are disposed at positions that are substantially symmetrical. Accordingly, the motor 3 and the compressor 7 can be installed in a well-balanced manner below the rotating drum 1 of the main body 2, and the left and right directions and the front and rear directions of the center of gravity of the main body 2 and the vertical line including the center of gravity 1 a of the rotating drum 1. Directional deviation can be reduced. For this reason, vibration and noise during the drying operation can be reduced. In addition, the power consumption of the motor 3 is reduced due to the low vibration, and the arrangement positions of the motor 3 and the compressor 7 are separated from each other, thereby reducing the adverse thermal influence between the motor 3 and the compressor 7 which are both heat sources. Thus, the temperature rise of the compressor 7 can be suppressed. Thereby, the compressor 7 can be driven in a state where the output is larger, and the performance of the heat pump device 6 can be improved.

Further, the gravity center position 6 a of the heat pump device 6 including the heat absorber 10 and the radiator 8 is substantially symmetrical with the gravity center position 3 a of the motor 3 that rotationally drives the rotary drum 1 with respect to a vertical line that includes the gravity center 1 a of the rotation drum 1. It was arranged at the position. Thereby, piping of the compressor 7, the heat absorber 10, and the heat radiator 8 can be shortened, the heat pump apparatus 6 can be reduced in size, and it can arrange | position compactly in the small space in the main body 2. FIG. Further, the vibration during rotation of the rotary drum 1 can be reduced to reduce the power consumption of the motor 3.

Further, the motor 3 is disposed in the vicinity of the first side surface 2b of the main body 2, and the compressor 7 is disposed in the vicinity of the second side surface 2c facing the first side surface 2b. As a result, the motor 3 and the compressor 7 can be arranged in a balanced manner at the bottom of the main body 2 to reduce vibration and noise during the drying operation. Furthermore, heat dissipation from the first side surface 2b and the second side surface 2c of the main body 2 is promoted, and temperature rises of the motor 3 and the compressor 7 can be suppressed.

The distance and direction from the vertical line including the center of gravity 1a of the rotating drum 1 to the center of gravity position 3a of the motor 3 and the center of gravity position 7a of the compressor 7 are optimally set according to each mass, configuration, and the like. Similarly, the distance and direction from the center of gravity position 3a of the motor 3 to the center of gravity position 6a of the heat pump device 6 are also optimally set according to the respective masses and configurations.

In the present embodiment, the rotary shaft 5 is set in the horizontal direction. However, by tilting the front surface 2a side of the main body 2 upward by about 5 to 45 degrees, the clothes 30 can be easily put into and taken out of the rotary drum 1. Can be.

In the present embodiment, the blower fan 12 is directly connected to the shaft of the motor 3, but may be driven via a belt in the same manner as the drive of the rotary drum 1. Thereby, the freedom degree of arrangement | positioning of the ventilation fan 12 increases, and it becomes possible to set it as the structure which guides the air for drying to the rotating drum 1 by arrange | positioning close to the back side of the heat radiator 8. FIG. As a result, the pressure loss of the air blowing path 13 can be reduced.

(Embodiment 4)
FIG. 6 is a horizontal sectional view showing the lower part of the drum of the clothes dryer according to the fourth embodiment of the present invention. A feature of the present embodiment is that a first cooling fan 20 for cooling the motor 3 is provided on the front surface 2a of the main body 2 on the same side as the motor 3 with respect to a vertical line including the center of gravity 1a of the rotary drum 1. is there. An intake port 21 for introducing outside air into the main body 2 by the first cooling fan 20 is provided in the front surface 2 a of the main body 2, and an exhaust port 22 for discharging the outside air introduced into the main body 2 to the outside of the main body 2 is provided in the compressor 7. It is provided in the vicinity. Other configurations are the same as those of the third embodiment, the same reference numerals are given to the same configurations, and the description of the third embodiment is used for detailed description.

With the above configuration, when the motor 3 becomes smaller due to the miniaturization of the motor 3 and the mass of the compressor 7 is unbalanced, or the unbalance is caused by the distance from the vertical line including the center of gravity 1a of the compressor 7 and the rotary drum 1. The balance of the center of gravity can be maintained by the first cooling fan 20 when a balance occurs. Thereby, vibration and noise during the drying operation can be reduced. Furthermore, it becomes possible to cool against the temperature rise at the time of driving due to downsizing of the motor 3, and the motor 3 can be driven at an appropriate temperature.

Further, the motor 3 and the first cooling fan 20 are disposed on the opposite sides that are substantially symmetrical with respect to the vertical line including the center of gravity 1a of the rotary drum 1 with a predetermined distance from the compressor 7. For this reason, the cooling effect of the motor 3 by the cooling air from the first cooling fan 20 can be enhanced. In addition, since the exhaust port 22 is provided in the vicinity of the compressor 7, the cooling air is discharged from the exhaust port 22 through the outer surface of the rotary drum 1 and the vicinity of the compressor 7. For this reason, the cooling air can cool the rotary drum 1 and the compressor 7 by taking heat.

(Embodiment 5)
FIG. 7 is a system diagram of the clothes dryer in the fifth embodiment of the present invention. FIG. 8 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer according to the fifth embodiment of the present invention. The feature of this embodiment is that a heater 23 that heats the drying air flowing through the blower passage 13 between the radiator 8 and the rotary drum 1 and an air-cooled heat that cools the drying air discharged from the rotary drum 1. An exchanger 24 is provided, and the heat exchanger 24 is disposed below the rotary drum 1 and between the motor 3 and the front surface 2 a of the main body 2.

In addition, the other features of the present embodiment are that a second cooling fan 25 that cools the air-cooled heat exchanger 24, an intake port 26 that takes in outside air by the second cooling fan 25, and the intake port 26 and heat A duct 27 communicating with the exchanger 24 is provided, an outlet of the duct 27 is opened in the main body 2, and an exhaust port 22 to the outside of the machine is provided in the vicinity of the compressor 7 or the motor 3. Other configurations are the same as those of the first embodiment, the same reference numerals are given to the same configurations, and the description of the first embodiment is used for the detailed description.

A heater 23 is disposed on the inflow side of the drying air to the rotary drum 1 in the air blowing path 13. Thereby, the temperature rise of the drying air at the start of the drying operation can be accelerated, and the garment 30 can be dried in a shorter time. In this case, the motor 3 and the compressor 7 are distributed on both sides of the vertical plane including the rotating shaft 5 of the rotating drum 1, and the motor 3 is provided near the back surface 2 d of the main body 2. The heat exchanger 24 can be provided in a space formed between the motor 3 and the front surface 2 a of the main body 2. As a result, the heater 23 can be disposed in the air blowing path 13 without greatly changing the refrigeration cycle of the heat pump device 6, and the drying time can be shortened.

Thus, the temperature of the drying air can be increased in a short time by the heater 23 immediately after the start of the operation of the heat pump device 6 with a small amount of heat released from the radiator 8. Further, by using the radiator 8 and the heater 23 at the same time, higher-temperature drying air can be supplied into the rotating drum 1. For this reason, it becomes possible to dry the clothes in a shorter time.

In addition to cooling the heat of the drying air in the heat exchanger 24 by the outside air introduced from the air inlet 26 by the second cooling fan 25, the compressor 7 and the motor 3 in the main body 2 are also cooled together. Can do.

In order to make the refrigeration cycle of the heat pump device 6 the same as the refrigeration cycle when the heater 23 is not inserted, the air-cooled heat exchanger 24 should have a cooling capacity comparable to the input of the heater 23. Good.

In the present embodiment, the air-cooled heat exchanger 24 is provided in the heat exchanger that cools the input of the heater 23, but the same effect can be obtained even with other types of heat exchangers.

(Embodiment 6)
FIG. 9 is a horizontal sectional view showing the lower part of the rotating drum of the clothes dryer according to the sixth embodiment of the present invention. In addition, the system diagram of the clothes dryer in the sixth embodiment of the present invention is the same as FIG. 7 in the fifth embodiment.

The feature of this embodiment is that a heater 23 that heats the drying air flowing through the blower passage 13 between the radiator 8 and the rotary drum 1 and an air-cooled heat that cools the drying air discharged from the rotary drum 1. An exchanger 24 is provided, and the heat exchanger 24 is disposed below the rotary drum 1 and between the motor 3 and the front surface 2 a of the main body 2.

In addition, the other features of the present embodiment are that a second cooling fan 25 that cools the air-cooled heat exchanger 24, an intake port 26 that takes in outside air by the second cooling fan 25, and the intake port 26 and heat A duct 27 communicating with the exchanger 24 is provided, an outlet 27 a of the duct 27 is opened in the main body 2, and an exhaust port 22 to the outside of the machine is provided in the vicinity of the compressor 7.

Further, the compressor 7 is provided to face the outlet 27 a of the duct 27. The wind that has passed through the heat exchanger 24 provided in the duct 27 strikes the compressor 7 and cools the compressor. Other configurations are the same as those of the third embodiment, the same reference numerals are given to the same configurations, and the description of the third embodiment is used for detailed description.

A heater 23 is disposed on the inflow side of the drying air to the rotary drum 1 in the air blowing path 13. Thereby, the temperature rise of the drying air at the start of the drying operation can be accelerated, and the garment 30 can be dried in a shorter time. In this case, the motor 3 is disposed on the opposite side of the vertical line including the center of gravity 1a of the rotary drum 1 and is substantially symmetrical with a predetermined distance from the compressor 7, and the motor 3 is located closer to the back surface 2d of the main body 2. By providing, the heat exchanger 24 can be provided in a space formed between the motor 3 and the front surface 2 a of the main body 2. As a result, the heater 23 can be disposed in the air blowing path 13 without greatly changing the refrigeration cycle of the heat pump device 6, and the drying time can be shortened.

Further, the outside air introduced from the air inlet 26 by the second cooling fan 25 passes through the heat exchanger 24 through the duct 27, and the compressor 7 is effectively cooled by the cooling air that has cooled the circulating drying air. can do. As a result, the temperature rise of the compressor 7 can be suppressed.

As described above, the clothes dryer according to the present invention is useful as a clothes dryer because it can reduce vibration and noise during the drying operation and improve the performance of the heat pump device.

DESCRIPTION OF SYMBOLS 1 Rotating drum 1a Center of

gravity

3a, 6a, 7a Center of gravity position 2 Main body 2a Front surface 2b First side surface 2c Second side surface 2d Back surface 3 Motor 5 Rotating shaft 6 Heat pump device 7 Compressor 8 Radiator 9 Throttle section 10 Heat absorber 11 Tube Path 12 Blower fan 20 First cooling fan 25 Second cooling fan 13

Blower path

21, 26 Intake port 22 Exhaust port 23 Heater 24 Heat exchanger 27 Duct

Claims

A rotary drum provided rotatably inside the main body, a motor that rotationally drives the rotary drum, a heat pump device that is connected by a conduit so that a refrigerant circulates through a compressor, a radiator, a throttle unit, and a heat absorber; A blower fan for blowing drying air into the rotating drum; and a blowing path for circulating the drying air discharged from the rotating drum from the heat absorber to the rotating drum via the radiator, The compressor is installed at the bottom of the main body below the rotary drum, and the clothes are arranged such that the motor and the compressor are distributed on both sides of a vertical plane including the rotary shaft of the rotary drum. Dryer.
The position of the center of gravity of the heat pump device including the heat absorber and the heat radiator is located on the opposite side of the position of the center of gravity of the motor that rotationally drives the rotating drum with respect to a vertical plane including the rotating shaft of the rotating drum. The clothes dryer according to claim 1 configured as described above.
The clothes dryer according to claim 1, wherein a first cooling fan for cooling the motor is provided on the same side as the motor with respect to a vertical plane including a rotating shaft of the rotating drum.
The clothes dryer according to claim 1, wherein the motor is disposed in the vicinity of the first side surface of the main body, and the compressor is disposed in the vicinity of the second side surface facing the first side surface.
The clothes dryer according to claim 4, wherein the compressor is provided at a corner portion close to the second side surface of the main body and the back surface of the main body.
A heater that heats the drying air flowing through the air blowing path between the radiator and the rotating drum, and a heat exchanger that cools the drying air discharged from the rotating drum are provided, and the heat exchanger includes: The clothes dryer according to claim 1, wherein the clothes dryer is disposed below the rotating drum and between the motor and the front surface of the main body.
The heat exchanger includes an air-cooled heat exchanger, a second cooling fan that cools the air-cooled heat exchanger, an intake port that takes in outside air by the second cooling fan, the intake port, The clothes dryer according to claim 6, wherein a duct communicating with an air-cooled heat exchanger is provided, an outlet of the duct is opened in the main body, and an exhaust port to the outside of the machine is provided in the vicinity of the compressor or the motor. .
The clothes dryer according to claim 1, wherein the motor and the compressor are disposed substantially symmetrically with respect to a vertical line including a center of gravity of the rotating drum.
The position of the center of gravity of the heat pump device including the heat absorber and the heat sink is set to a position that is substantially symmetric with the position of the center of gravity of the motor that rotationally drives the rotating drum with respect to a vertical line that includes the center of gravity of the rotating drum. The clothes dryer according to claim 8, which is disposed.
The clothes dryer according to claim 8, wherein a first cooling fan for cooling the motor is provided on the same side as the motor with respect to a vertical line including the center of gravity of the rotating drum.
The clothes dryer according to claim 8, wherein the motor is disposed in the vicinity of the first side surface of the main body, and the compressor is disposed in the vicinity of the second side surface facing the first side surface.
A heater that heats the drying air flowing through the blower path between the radiator and the rotating drum, and a heat exchanger that cools the drying air discharged from the rotating drum are provided, and the heat exchanger includes: The clothes dryer according to claim 8, which is disposed below the rotating drum and between the motor and the front surface of the main body.
The heat exchanger includes an air-cooled heat exchanger, a second cooling fan that cools the air-cooled heat exchanger, an intake port that takes in outside air by the second cooling fan, the intake port, The clothes dryer according to claim 12, wherein a duct communicating with an air-cooled heat exchanger is provided, an outlet of the duct is opened in the main body, and an exhaust port to the outside of the machine is provided in the vicinity of the compressor or the motor. .
The clothes dryer according to claim 13, wherein the compressor is provided at an outlet of the duct, and the compressor is cooled by wind passing through the heat exchanger.