JP2017000483A - Clothes dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid increase in air passage resistance of an air passage between an inflow port and an evaporator, without increasing the case of a heat pump unit and changing an installation position of a compressor.SOLUTION: In a clothes dryer of the embodiment, a circulation air passage in which air in a drying chamber circulates comprises: an upstream side air passage connected to an outlet of the drying chamber; a downstream side air passage connected to an inlet of the drying chamber; and an intermediate air passage for connecting the upstream side air passage and the downstream side air passage together. The heat pump unit has the intermediate air passage inside, constitutes a refrigeration cycle in which a refrigerant is circulated through a compressor, a condenser, a throttle and an evaporator, comprises the condenser and the evaporator in the intermediate air passage, dehumidifies the air flowing in from the upstream side air passage by the evaporator, heats it by the condenser and flows it out to the downstream side air passage. The heat pump unit comprises, between the compressor and the evaporator, an inflow port for flowing the air into the intermediate air passage from the upstream side air passage.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to a clothes dryer.

  Conventionally, a clothes dryer provided with a heat pump unit has been provided as a heat source for drying clothes and the like. By the way, in this kind of clothes dryer, it is necessary to arrange | position a heat pump unit in the limited space in a housing | casing, and the device about the arrangement structure is calculated | required. For example, in Patent Document 1, an air inflow port is provided above a compressor constituting a heat pump unit, so that an air passage connected to the heat pump unit is shortened, and the heat pump unit is disposed in a limited space in the housing. The technique made to do is disclosed.

Japanese Patent No. 5602802

  However, in the configuration in which the air inlet is provided above the compressor, an air passage for guiding the inflow air to the evaporator, that is, an air passage between the inlet and the evaporator is avoided in the compressor. Must be provided. Therefore, it is necessary to curve or narrow the air path between the inlet and the evaporator, and the air path resistance increases accordingly. Here, for example, if the case of the heat pump unit itself is enlarged or the installation position of the compressor is changed, the air path resistance can be reduced without curving or narrowing the air path between the inlet and the evaporator. Can be suppressed. However, in the housing, for example, a suspension for supporting the drying chamber is arranged. Depending on the positional relationship with such other components, the case of the heat pump unit is enlarged, or the installation position of the compressor is set. It is difficult to change freely.

  Therefore, this embodiment avoids an increase in the airflow resistance of the airflow path between the inlet and the evaporator without enlarging the case of the heat pump unit or changing the installation position of the compressor. Provide a clothes dryer that can.

  The clothes dryer which concerns on this embodiment is provided with a housing | casing, a drying chamber, a circulation air path, a ventilation means, and a heat pump unit. The drying chamber is provided in the housing and has an air outlet and an inlet. The circulation air passage includes an upstream air passage connected to the outlet of the drying chamber, a downstream air passage connected to the inlet of the drying chamber, and an intermediate air connecting the upstream air passage and the downstream air passage. Road. The blower circulates the air in the drying chamber through the circulation air passage. The heat pump unit includes the intermediate air passage in the inside thereof, and constitutes a refrigeration cycle in which the refrigerant is circulated through the compressor, the condenser, the constrictor, and the evaporator, and the condenser and the evaporator are disposed in the intermediate air passage. The air flowing in from the upstream air passage is dehumidified by the evaporator, heated by the condenser, and discharged to the downstream air passage. And the heat pump unit is equipped with the inflow port which flows in air from the said upstream air path to an intermediate | middle air path between the said compressor and the said evaporator.

Vertical side view schematically showing a configuration example of a clothes dryer according to the present embodiment A longitudinal rear view schematically showing a configuration example of a clothes dryer according to the present embodiment The perspective view which looked at the example of composition of the principal part of the clothes dryer concerning this embodiment from the back left side The perspective view which looked at the example of composition of the principal part of the clothes dryer concerning this embodiment from the back right side The figure which shows schematically the structural example of the heat pump unit which concerns on this embodiment. The top view which shows roughly the structural example in the case of the heat pump unit which concerns on this embodiment Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 1st Embodiment. Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 2nd Embodiment. Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 3rd Embodiment. Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 4th Embodiment. Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 5th Embodiment Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 6th Embodiment Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 7th Embodiment Sectional drawing which shows schematically the structural example in the case of the heat pump unit which concerns on 8th Embodiment.

Hereinafter, a plurality of embodiments according to a clothes dryer will be described with reference to the drawings. In each embodiment, substantially the same elements are denoted by the same reference numerals, and description thereof is omitted.
(First embodiment)
The washing / drying machine 1 illustrated in FIGS. 1 to 4 is a drum-type washing machine having a laundry washing function and a drying function, and also functions as a clothes dryer. The casing 2 constituting the main body of the washing / drying machine 1 has a substantially rectangular box shape, and the front surface portion 2a is formed in a slightly downwardly inclined shape. A laundry doorway (not shown) is formed in the front surface portion 2a. Moreover, the door 3 which opens and closes the laundry doorway is provided in the front part 2a so that rotation is possible. A water tank 4 is elastically supported through the suspension S in the housing 2. The water tank 4 has a bottomed cylindrical shape with an open front surface and a closed rear surface, and is disposed in a slightly upwardly inclined state with the axial direction oriented in the front-rear direction. The front opening of the water tub 4 is connected to the laundry entrance through a bellows bellows (not shown). The water tank 4 functions as a drying chamber during a drying process for drying laundry such as clothes.

  In the water tank 4, a drum 6 which is an example of a rotating tank is rotatably disposed. As with the water tank 4, this drum 6 also has a bottomed cylindrical shape with an opening on the front surface and a closed rear surface, with the axial direction oriented in the front-rear direction and arranged in a slightly upwardly inclined state. Has been. A large number of holes 6 a are formed in the peripheral wall portion and the rear wall portion of the drum 6. These holes 6a function as water passage holes through which water passes during the washing process and during the rinsing process, and function as ventilation holes through which dry air passes during the drying process. A motor 7 is provided on the back of the water tank 4, and the drum 6 is rotationally driven by the motor 7 via a rotating shaft 7 a. A plurality of baffles (not shown) are provided inside the peripheral wall portion of the drum 6. Laundry such as clothes is accommodated in the drum 6 through the laundry entrance / exit, the opening of the water tub 4, and the opening of the drum 6.

  The water tank 4 is provided with an air inlet 8a at the upper part of the rear wall and an upward air outlet 8b at the upper part of the front part of the peripheral wall part. The air inlet 8a is an example of an air inlet provided in the drying chamber, and the air outlet 8b is an example of an air outlet provided in the drying chamber. A filter case 10 is connected to the upper part of the air outlet 8b via a connection duct 9 formed in a bellows shape so as to absorb vibration. A lint filter (not shown) is detachably attached in the filter case 10.

  A front end portion of the exhaust duct 11 is connected to the rear portion of the filter case 10. The exhaust duct 11 is an example of an upstream air passage that constitutes an air passage upstream of the air blowing means in the circulation air passage, and extends backward from the filter case 10 and then turns downward. The lower end is connected to the case 13 of the heat pump unit 12 provided below the water tank 4 in the lower rear part in the housing 2. The case 13 constitutes the outer shell of the heat pump unit 12. The case 13 extends behind the suspension S along the lateral direction of the washing / drying machine 1, that is, along the horizontal direction.

  A compressor 22 constituting the heat pump 21 is disposed at one end portion of the case 13, and a blower 14 constituting a blowing means is disposed at the other end portion of the case 13. The blower 14 includes a fan casing 15, a fan 16 disposed in the fan casing 15, and a fan motor 17 that rotationally drives the fan 16. The discharge port of the fan casing 15 is provided upward, and one end of an air supply duct 19 is connected to the discharge port via a connection duct 18 formed in a bellows shape so as to absorb vibration. The other end of the air supply duct 19 extends upward and is connected to the wind inlet 8 a of the water tank 4. The air supply duct 19 is an example of a downstream air passage that constitutes an air passage downstream of the air blowing means in the circulation air passage.

  Here, the washing / drying machine 1 is configured such that the connection duct 9, the filter case 10, the exhaust duct 11, the case 13 of the heat pump unit 12, the fan casing 15 of the blower 14, the connection duct 18, and the air supply duct 19. A circulation air passage 20 that communicates between the outlet 8b and the air inlet 8a is configured. The circulation air passage 20 has one end connected to the air inlet 8a and the other end connected to the air outlet 8b outside the water tank 4 and inside the housing 2. When the blower 14 is driven, the air in the water tank 4 flows out from the air outlet 8b into the circulation air passage 20, and circulates through the circulation air passage 20 so as to be returned from the air inlet 8a to the water tank 4. In the circulation process, the air flowing in the circulation air passage 20 is dehumidified by the evaporator 25, further heated by the condenser 23, and flows into the water tank 4 as hot air.

The circulation air passage 20 is roughly divided into three air passages: an upstream air passage 20A, a downstream air passage 20B, and an intermediate air passage 20C.
The upstream air passage 20 </ b> A is configured to include the connection duct 9 and the filter case 10 with the exhaust duct 11 as a main body, and is connected to the air outlet 8 b of the water tank 4. In this case, the upstream side air passage 20 </ b> A includes an upper surface air passage 20 </ b> Aa that extends in the front-rear direction at the upper portion of the water tank 4, and a rear air passage 20 </ b> Ab that extends in the vertical direction on the back surface of the water tank 4. The downstream side air passage 20 </ b> B includes the fan casing 15 and the connection duct 18 with the air supply duct 19 as a main body, and is connected to the air inlet 8 a of the water tank 4. The intermediate air passage 20C connects an end on the leeward side of the upstream air passage 20A and an end on the upwind side of the downstream air passage 20B between the upstream air passage 20A and the downstream air passage 20B. ing. In this case, the intermediate air passage 20 </ b> C is formed inside the case 13 of the heat pump unit 12.

  As illustrated in FIG. 5, the heat pump 21 provided in the heat pump unit 12 configures a refrigeration cycle by connecting a compressor 22, a condenser 23, a throttle 24, and an evaporator 25 through a refrigerant pipe 26. Among these, the condenser 23 and the evaporator 25 which comprise a heat exchanger are arrange | positioned in the intermediate | middle air path 20C provided in the case 13 among the circulation air paths 20. FIG. In the case 13, the condenser 23 is disposed at a position closer to the blower 14 than the evaporator 25. That is, the evaporator 25 is disposed on the upstream side of the condenser 23. The condenser 23 functions as a heating unit that heats the air passing through the circulation air path 20, and the evaporator 25 functions as a dehumidification unit that cools and dehumidifies the air passing through the circulation air path 20.

  The clothes dryer 1 which concerns on this embodiment employ | adopts the structure for suppressing the increase in the air path resistance of the circulation air path 20, especially the intermediate | middle air path 20C. Next, this configuration will be described. That is, as illustrated in FIG. 2, the case 13 of the heat pump unit 12 has an inlet 30 to which the downstream end of the upstream air passage 20 </ b> A is connected. In this case, the inflow port 30 is provided between the compressor 22 and the evaporator 25 on the upper surface of the case 13 of the heat pump unit 12.

  In this case, the case 13 includes a heat pump cover 13 </ b> A that covers the top of the condenser 23 and the evaporator 25, and a compressor cover 13 </ b> B that covers the top of the compressor 22. The inflow port 30 is provided in the heat pump cover 13A. Moreover, the inflow port 30 is provided in the position lower than the upper end of the compressor cover 13B. The heat pump cover 13 </ b> A provided with the inflow port 30 may be a cover that covers at least the top of the evaporator 25. That is, a heat pump cover that covers the upper side of the evaporator 25 and a heat pump cover that covers the upper side of the condenser may be provided separately, and the inlet 30 may be provided in the heat pump cover that covers the evaporator 25.

  Further, when viewed from the back side of the washing and drying machine 1, the inlet 30 is shifted in the lateral direction of the washing and drying machine 1, that is, in the horizontal direction with respect to the upper end portion of the back side air path 20Ab that constitutes the upstream side air path 20A. Configured in position. In this case, the inflow port 30 is provided so that the whole does not overlap with the upper end of the rear air passage 20Ab. However, you may provide the inflow port 30 so that the part may not overlap with the upper end part of 20 Ab of back surface air paths. In the washing / drying machine 1 according to the present embodiment, the compressor 22 is located behind the suspension S and is located below the rear air passage 20Ab.

  Further, when viewed from the back side of the washing / drying machine 1, the inflow port 30 is located below the motor 7 that rotates the drum 6 provided in the water tank 4. In this case, the entire inlet 30 is located below the motor 7. However, the inflow port 30 may be configured such that a part thereof is located below the motor 7.

  Further, the rear air passage 20Ab constituting the upstream air passage 20A has a vertical portion 20Ac extending in the vertical direction and a horizontal portion 20Ad extending in the horizontal direction. The horizontal portion 20Ad has a cross-sectional area orthogonal to the horizontal direction, that is, an air passage area, which is larger than an opening area of the inflow port 30. In this case, the horizontal portion 20Ad has an air passage area larger than the opening area of the inflow port 30 in any cross section. However, the horizontal portion 20Ad may have a configuration in which at least a part of the air passage area is larger than the opening area of the inflow port 30.

  Further, the air passage area of the horizontal portion 20Ad is larger than the cross-sectional area perpendicular to the vertical direction of the vertical portion 20Ac, that is, the air passage area. In this case, the horizontal portion 20Ad has an air passage area larger than the air passage area of any cross section of the vertical portion Ac in any cross section. However, the horizontal portion 20Ad may have a configuration in which at least a part of the air passage area is larger than the air passage area of any cross section of the vertical portion 20Ac.

  The rear air passage 20Ab has a configuration in which a vertical portion 20Ac and a horizontal portion 20Ad are provided separately. By the way, in the drying process, wet air before being dehumidified by the evaporator 25 flows in the upstream air passage 20A including the rear air passage 20Ab. Therefore, there is a concern that moisture contained in the air may condense and leak out from a connection portion between the vertical portion 20Ac and the horizontal portion 20Ad. Therefore, as illustrated in FIGS. 3 and 4, a groove-shaped water receiving groove 35, which is an example of a water receiving portion, is provided on the outer surface of the horizontal portion 20 </ b> Ad according to the present embodiment. Therefore, even if water leaks from the connecting portion between the vertical portion 20Ac and the horizontal portion 20Ad, the leaked water can be received by the water receiving groove 35, and the lower heat pump unit 12 is wetted. It can be avoided.

  Further, the bottom of the horizontal portion 20Ad is inclined downward toward the inflow port 30. As a result, even if water contained in the air flowing in the upstream side air passage 20A is condensed, the water can be guided to the inflow port 30, and water is collected in the horizontal portion 20Ad and eventually in the upstream side air passage 20A. Can not be. In addition, the drain hole connected to the drain tank which is not shown in figure is provided in the case 13, and the dew condensation water which flowed in in the case 13 from the inflow port 30 can be drained to a drain tank.

  Further, the horizontal portion 20Ad has a bent portion 20Ae connected to the inflow port 30 on the downstream side thereof. The bent portion 20 </ b> Ae is provided at a position lower than the lower end of the motor 7. In the washing / drying machine 1, for example, packaging bolts 38 for fixing the water tank 4 at the time of factory shipment are provided on the back surface of the water tank 4. However, in the washing / drying machine 1 according to the present embodiment, the horizontal portion 20Ad extends to a portion where the packaging bolt is provided in the conventional washing / drying machine. Therefore, it is difficult to attach the packaging bolt sideways as in the conventional washing and drying machine. Therefore, in the washer / dryer 1 according to the present embodiment, the space between the horizontal portion 20Ad and the downstream air passage 20B is effectively utilized, and the packaging bolts 38 are attached in a vertical direction instead of the conventional horizontal direction. .

  The inflow port 30 is provided at a position lower than the upper end of the compressor 22. Here, the upper end of the compressor 22 basically means the upper end of the main body of the compressor 22, that is, the shoulder of the compressor 22. However, for example, when the refrigerant pipe 26 extends upward from the discharge port of the compressor 22, the portion where the refrigerant pipe 26 is bent first may be defined as the upper end of the compressor 22.

  Moreover, as illustrated in FIG. 6, the evaporator 25 in the case 13 is inclined so that the rear end side is farther from the compressor 22 than the front end side. Similarly, the condenser 23 is also inclined so that the rear end side is further away from the compressor 22 than the front end side. A portion of the rear end surface of the case 13 between the compressor 22 and the evaporator 25 is provided with a bulging portion 13a that slightly bulges rearward. The inflow port 30 is provided corresponding to the bulging portion 13a. Thereby, the inflow port 30 has a configuration in which the rear end is located behind the rear end of the evaporator 25.

  In addition, an inclined portion that is inclined downward toward the evaporator 25 is provided at a position below the inflow port 30 in the case 13. Next, a configuration example of the inclined portion will be described. In the configuration example illustrated in FIG. 7, the wall surface facing the compressor 22 in the intermediate air passage 20 </ b> C is configured by the wall surface forming member 40. The wall surface forming member 40 is fixed to the bottom of the case 13 by, for example, screwing. The wall surface forming member 40 is integrally provided with an inclined portion 41 that is inclined downward toward the evaporator 25. Thus, the inclined portion 41 is provided below the inflow port 30 by attaching the wall surface forming member 40 to the case 13. According to this configuration, as indicated by the arrow W, the wind flowing from the inlet 30 can easily flow toward the evaporator 25, and the wind path resistance in the air path between the inlet 30 and the evaporator 25 is increased. Can be further suppressed.

  The intermediate air passage 20 </ b> C has a horizontal air passage portion 20 </ b> Ca that extends horizontally on the upstream side of the evaporator 25 and on the downstream side of the inclined portion 41. According to this configuration, the wind flowing along the inclined portion 41 reaches the evaporator 25 while being rectified in the horizontal air passage portion 20Ca.

  According to the washer / dryer 1, the inlet 30 for allowing air to flow from the upstream air passage 20A to the intermediate air passage 20C is provided between the compressor 22 and the evaporator 25, not above the compressor 22. It was. Therefore, it is possible to report a sufficient air passage area without enlarging the case 13 of the heat pump unit 12 or changing the installation position of the compressor 22, and between the inlet 30 and the evaporator 25. An increase in air path resistance in the air path can be suppressed.

(Second Embodiment)
In the configuration example illustrated in FIG. 8, the washing / drying machine 1 includes a wind direction adjusting member 50 attached to the inflow port 30. The air direction adjusting member 50 forms an air direction adjusting portion 51 that guides air flowing from the inflow port 30 toward the evaporator 25 below the inflow port 30. The wind direction adjusting unit 51 has an inclined part 52 that is inclined downward toward the evaporator 25. In this case, the inclined portion 52 forms a flat inclined surface.
Also with this configuration, the wind flowing from the inlet 30 can easily flow toward the evaporator 25, and an increase in the air path resistance in the air path between the inlet 30 and the evaporator 25 can be further suppressed.

(Third embodiment)
In the configuration example illustrated in FIG. 9, the washing / drying machine 1 includes a wind direction adjusting member 60 attached to the inflow port 30. The air direction adjusting member 60 forms an air direction adjusting unit 61 that guides air flowing from the inflow port 30 toward the evaporator 25 below the inflow port 30. The wind direction adjusting unit 61 has an inclined portion 62 that is inclined downward toward the evaporator 25. In this case, the inclined portion 62 forms a curved inclined surface.
Also with this configuration, the wind flowing from the inlet 30 can easily flow toward the evaporator 25, and an increase in the air path resistance in the air path between the inlet 30 and the evaporator 25 can be further suppressed.

(Fourth embodiment)
In the configuration example illustrated in FIG. 10, the washing / drying machine 1 includes a plurality of air direction plates 63 in the air direction adjusting unit 61 of the air direction adjusting member 60. These wind direction plates 63 adjust the wind direction of the air flowing in from the inflow port 30 so as to go to the evaporator 25. According to this configuration, the wind flowing in from the inflow port 30 becomes easier to flow toward the evaporator 25, and the increase in air path resistance in the air path between the inflow port 30 and the evaporator 25 can be further suppressed. . The wind direction plate 63 may be provided integrally with the wind direction adjusting member 60 or may be provided separately. Further, if the number of the wind direction plates 63 is excessively increased, sound may be generated when the wind passes between these wind direction plates 63. Therefore, the number of wind direction plates 63 is preferably limited to a number that does not generate sound.

(Fifth embodiment)
In the configuration example illustrated in FIG. 11, the washing / drying machine 1 includes a wind direction adjusting member 70 attached to the inflow port 30. The wind direction adjusting member 70 forms a wind direction adjusting portion 71 that guides air flowing from the inflow port 30 toward the evaporator 25 below the inflow port 30. The wind direction adjusting unit 71 includes a cylindrical cylindrical portion 72 that extends downward from the inflow port 30. According to this configuration, the wind flowing in from the inflow port 30 can easily flow toward the evaporator 25, and an increase in air path resistance in the air path between the inflow port 30 and the evaporator 25 can be further suppressed. In particular, at the lower end portion of the cylindrical portion 72, a wind flow that wraps around the lower end portion is also formed, so that the wind can easily face the upper side of the evaporator 25. Therefore, it is possible to send the air uniformly over the entire top and bottom of the evaporator 25.

(Sixth embodiment)
In the configuration example illustrated in FIG. 12, the washing / drying machine 1 includes a wind direction adjusting member 80 attached to the inflow port 30. The air direction adjusting member 80 forms an air direction adjusting portion 81 that guides air flowing from the inflow port 30 toward the evaporator 25 below the inflow port 30. The wind direction adjusting portion 81 includes a cylindrical tubular portion 82 that extends downward from the inflow port 30. The tubular portion 82 includes a plurality of air outlets 83. In this case, the cylindrical portion 82 includes a plurality of stages, in this case, three-stage outlets 83 along the vertical direction of the cylindrical section 82. These outlets 83 are all open in a rectangular shape, and the opening provided on the downstream side, that is, the lower end side of the cylindrical portion 82 is larger. The outlet 83 does not have to be rectangular, and for example, the shape thereof may be changed as appropriate, such as a circular shape, an elliptical shape, a triangular shape, or a polygonal shape.

  According to this configuration, since the air is blown out from the plurality of air outlets 83 arranged along the vertical direction of the cylindrical portion 82, the air can be sent over a wide range from the upper part to the lower part of the evaporator 25. In addition, by making the sizes of the plurality of outlets 83 equal, it is possible to send the air uniformly over the entire top and bottom of the evaporator 25. Further, by appropriately changing the size of each outlet 83, the amount of air sent to the evaporator 25 can be adjusted, for example, the balance between the amount of air sent to the upper portion of the evaporator 25 and the amount of air sent to the lower portion can be adjusted. Can be adjusted.

(Seventh embodiment)
In the configuration example illustrated in FIG. 13, the tubular portion 82 includes a plurality of outlets 83, and the number of these outlets 83 is increased toward the downstream side. According to this configuration, since the air is blown out from the plurality of air outlets 83 arranged along the vertical direction of the cylindrical portion 82, the air can be sent over a wide range from the upper part to the lower part of the evaporator 25. In addition, by equalizing the number of the outlets 83 in each stage, it is possible to send the air uniformly from the upper part to the lower part of the evaporator 25. Further, by appropriately changing the number of outlets 83 in each stage, the amount of air sent to the evaporator 25 is adjusted, for example, the balance between the air amount sent to the upper portion of the evaporator 25 and the air amount sent to the lower portion. Can be adjusted.

(Eighth embodiment)
In the configuration example illustrated in FIG. 14, the inflow port 30 is provided so as to be recessed from the upper surface of the case 13, whereby the inflow port 30 is provided at a position lower than the upper end of the evaporator 25. Yes. According to this configuration, a wind flow that goes around the lower end of the inflow port 30 is also formed, and the wind can easily be directed to the upper side of the evaporator 25. Therefore, it is possible to send the air uniformly over the entire top and bottom of the evaporator 25.

(Other embodiments)
The present embodiment is not limited to the above-described embodiment, and can be expanded or modified as follows, for example.
For example, the rear air passage 20Ab may be formed by integrally forming a vertical portion and a horizontal portion. According to this configuration, it is possible to reliably avoid water leakage at the connection portion between the vertical portion and the horizontal portion. Moreover, you may implement combining the embodiment mentioned above.
The inflow port 30 may be provided at a position where a part thereof overlaps the evaporator 25 when viewed from above.

  The clothes dryer which concerns on this embodiment demonstrated above is provided with a housing | casing, a drying chamber, a circulation air path, a ventilation means, and a heat pump unit. The drying chamber is provided in the housing and has an air outlet and an inlet. The circulation air passage includes an upstream air passage connected to the outlet of the drying chamber, a downstream air passage connected to the inlet of the drying chamber, and an intermediate air connecting the upstream air passage and the downstream air passage. Road. The blower circulates the air in the drying chamber through the circulation air passage. The heat pump unit includes the intermediate air passage in the inside thereof, and constitutes a refrigeration cycle in which the refrigerant is circulated through the compressor, the condenser, the constrictor, and the evaporator, and the condenser and the evaporator are disposed in the intermediate air passage. The air flowing in from the upstream air passage is dehumidified by the evaporator, heated by the condenser, and discharged to the downstream air passage. And the heat pump unit is provided with the inflow port in which the air from the said upstream air path flows in between the said compressor and the said evaporator. According to this configuration, it is possible to report a sufficient air passage area without enlarging the heat pump unit case or changing the installation position of the compressor, and the air flow between the inlet and the evaporator. It is possible to avoid an increase in the wind path resistance of the road.

  This embodiment is presented as an example and is 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. This embodiment and its modifications 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, 1 is a washing dryer (clothing dryer), 2 is a housing, 4 is a water tank (drying chamber), 6 is a drum (rotating tank), 7 is a motor, 8a is an air inlet, and 8b is an air outlet. , 12 is a heat pump unit, 13 is a case, 13A is a heat pump cover, 13B is a compressor cover, 14 is a blower (air blowing means), 20 is a circulation air passage, 20A is an upstream air passage, 20Ab is a rear air passage, and 20Ac is Vertical portion, 20Ad is horizontal portion, 20Ae is bent portion, 20B is downstream air passage, 20C is intermediate air passage, 20Ca is horizontal air passage portion, 22 is a compressor, 23 is a condenser, 24 is a throttle, 25 is An evaporator, 30 is an inlet, 35 is a water receiving groove (water receiving portion), 41, 52, and 62 are inclined portions, 50, 60, 70, and 80 are wind direction adjusting members, and 51, 61, 71, and 81 are air direction adjustments. Part, 63 is a wind direction plate, 72 and 82 are cylindrical parts, 83 is blowing out Mouth, indicating a.

Claims (25)

A housing,
A drying chamber provided in the housing and having an air outlet and an inlet;
An upstream air passage connected to the outlet of the drying chamber; a downstream air passage connected to the inlet of the drying chamber; and an intermediate air passage connecting the upstream air passage and the downstream air passage. A circulation airway,
Air blowing means for circulating air in the drying chamber through the circulation air passage;
A refrigeration cycle having the intermediate air passage therein and circulating a refrigerant through a compressor, a condenser, a throttle, and an evaporator is provided, and the condenser and the evaporator are provided in the intermediate air passage, and the upstream A heat pump unit that dehumidifies air flowing in from the side air passage by the evaporator, heats it by the condenser, and flows out to the downstream air passage,
The said heat pump unit is a clothes dryer provided with the inflow port which flows in air in the said intermediate | middle air path from the said upstream air path between the said compressor and the said evaporator. The upstream air path has a back air path provided on the back surface of the drying chamber,
The clothes dryer according to claim 1, wherein the inflow port is displaced in a horizontal direction with respect to an upper end portion of the rear air passage. A rotating tank provided in the drying chamber;
A motor for rotating the rotating tub,
The clothes dryer according to claim 1 or 2, wherein the inflow port is located below the motor.   The clothes dryer according to any one of claims 1 to 3, wherein the upstream air passage has a horizontal portion extending in a horizontal direction.   The clothes dryer according to claim 4, wherein at least a part of the air passage area of the horizontal portion is larger than an opening area of the inflow port. The upstream air path has a vertical portion extending in the vertical direction and a horizontal portion extending in the horizontal direction,
The clothes dryer according to any one of claims 1 to 3, wherein at least a part of an air passage area of the horizontal portion is larger than an air passage area of the vertical portion.   The clothes dryer according to any one of claims 4 to 6, wherein a water receiving portion that receives water leaking from a connection portion between the vertical portion and the horizontal portion is provided on an outer surface of the horizontal portion.   The clothes dryer according to any one of claims 4 to 7, wherein a bottom portion of the horizontal portion is inclined downward toward the inflow port. A rotating tank provided in the drying chamber;
A motor for rotating the rotating tub,
The upstream air passage has a horizontal portion extending in a horizontal direction,
The horizontal portion has a bent portion connected to the inflow port on the downstream side,
The clothes dryer according to claim 1 or 2, wherein the bent portion is provided at a position lower than a lower end portion of the motor. The evaporator is inclined such that the rear end side is further away from the compressor than the front end side,
The clothes dryer according to any one of claims 1 to 9, wherein a rear end of the inlet is located behind a rear end of the evaporator. A wind direction adjusting member attached to the inlet,
The clothes dryer according to any one of claims 1 to 10, wherein the wind direction adjusting member forms a wind direction adjusting unit that guides air flowing in from the inlet toward the evaporator below the inlet. .   The clothes dryer according to claim 11, wherein the wind direction adjusting unit has an inclined portion that is inclined downward toward the evaporator.   The clothes dryer according to claim 12, wherein the inclined portion is planar.   The clothes dryer according to claim 12, wherein the inclined portion is curved.   The clothes dryer according to any one of claims 11 to 14, wherein the wind direction adjusting unit includes a wind direction plate for adjusting a wind direction.   The clothes dryer according to claim 11, wherein the wind direction adjusting unit includes a cylindrical cylindrical portion extending downward from the inflow port.   The clothes dryer according to claim 16, wherein the tubular portion includes an air outlet. The cylindrical portion includes a plurality of the outlets,
The clothes dryer according to claim 17, wherein the outlet is opened larger as it is provided on the downstream side. The cylindrical portion includes a plurality of the outlets,
The clothes dryer according to claim 17, wherein the number of the outlets increases toward the downstream side.   The clothes dryer according to any one of claims 1 to 10, wherein an inclined portion that is inclined downward toward the evaporator is integrally provided on a wall surface of the intermediate air passage.   The clothes dryer according to any one of claims 1 to 20, wherein the inlet is provided at a position lower than an upper end of the compressor. A compressor cover covering the compressor;
The clothes dryer according to any one of claims 1 to 21, wherein the inflow port is provided at a position lower than an upper end of the compressor cover.   The clothes dryer according to any one of claims 1 to 22, wherein the inflow port is provided at a position lower than an upper end of the evaporator.   The clothes dryer according to any one of claims 1 to 23, wherein the intermediate air passage has a horizontal air passage portion extending horizontally on the upstream side of the evaporator. A heat pump cover covering at least the evaporator;
The clothes dryer according to any one of claims 1 to 24, wherein the inflow port is provided in the heat pump cover.

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