JP4812692B2 - Drum type washer / dryer - Google Patents

Description

  The present invention relates to a drum-type laundry dryer capable of washing, dewatering and drying laundry stored in a drum.

  In recent years, in a drum type washing and drying machine, a heat pump type using a heat pump instead of an electric heater has been developed as a drying means. In the case of this type of drum washer / dryer, a circulation air passage communicating with the inside of the water tank is provided outside the water tank containing the drum, and an evaporator and a condenser constituting the heat pump are arranged in the circulation air passage. In addition, a blower that circulates the air in the water tank through the circulation air passage is provided, and hot air heated by the condenser is supplied to the laundry (clothing) accommodated in the drum, and moisture from the laundry is also provided. The air deprived of the air is cooled and dehumidified in the evaporator, and the air is heated again by the condenser and supplied into the drum, whereby the laundry in the drum is dried. In this case, since heat pump units such as a compressor, an evaporator, and a condenser constituting the heat pump are heavy, the heat pump unit and the circulation air passage are generally installed below the water tank.

In the case of a drum-type washing / drying machine using a heat pump, it is an effective means for promoting energy saving as compared with an apparatus using an electric heater as a drying means. However, in the case of the heat pump type, the temperature of the air blown to the laundry as dry air is 60 to 80 ° C., and the temperature is lower than that of the electric heater type. This means that the drying performance is lowered or the drying time is shortened, and the drying efficiency is lowered. In order to obtain a drying performance comparable to that of the electric heater type, for example, when a compressor having a cooling capacity of about 1500 W is used, a circulating air flow rate of about 3 m ³ / min is required. It corresponds to 2 to 3 times the amount of circulating air of the heater type.

  In order to secure such a large blowing capacity, means such as an increase in the size of the blower and the rotation speed of the blower fan can be considered, but the increase in the size of the blower leads to an increase in the size of the product of the washing / drying machine itself. In addition, an increase in the rotation speed of the blower fan causes an increase in noise. On the other hand, since the flow resistance of the circulating air flow is proportional to the square of the circulating air flow velocity, the circulating air flow rate can be increased by increasing the circulating air flow passage area and reducing the average flow velocity.

In view of this, it has been considered that the circulating air flow passage area is expanded by branching a part of the circulating air passage connected to the water tank into two branch passages. Specifically, on the front side of the water tank, vents (exhaust ports) are formed in two places on the left and right sides of the opening for putting in and out the laundry in the center, and two branch paths are provided. These branches are joined at the lower part and connected to the circulation air passage. The upper portions of the two branch paths are respectively communicated with the inside of the water tank through corresponding vents. Thus, the air exhausted from the water tank is branched into two branch paths from the vents, respectively, and then merged at the junction (see, for example, Patent Document 1).
JP 2006-230471 A (FIG. 5)

  In the drum-type washing and drying machine having the above-described configuration, at the initial stage of dewatering (particularly, the initial stage of intermediate dehydration performed immediately after the washing process), an amount of water that cannot be covered by the drainage capacity of the drainage path is from After being squeezed out, bubbles and water may accumulate in the lower part of the water tank and then drained little by little. In such an initial stage of dehydration, bubbles and water accumulated in the lower part of the water tank will be swept up by the rotation of the drum, so that bubbles and water droplets are branched from the vent hole, and thus the circulation air passage. There is a risk of intrusion. When bubbles or water droplets enter the branch passage, they flow downward in the circulation air passage and leak into the outer box from the gaps between the members constituting the circulation air passage (for example, the lint filter installation part). The product life may be shortened by adhering to a heat pump component (evaporator or condenser) or an air blower disposed in the circulation air passage. For this reason, it is necessary to form each of the two vents at a height where it is difficult for bubbles and water droplets to enter. Incidentally, in the case of Patent Document 1, the two left and right vents (exhaust ports) are set at the same height position. In this case, the higher the position of each vent, the more difficult it is for bubbles and water droplets to enter from the vent, but the length of each branch becomes longer, and the flow resistance increases accordingly. There is a problem.

  The present invention has been made in view of the above circumstances, and its object is to divide a part of the circulation air passage into two branch passages and to provide two vents at the top of these two branch passages. Providing a drum-type washing and drying machine that can prevent bubbles and the like from entering from the two vents to the branch path side, and can reduce the flow resistance of the branch path as much as possible. It is in.

  In order to achieve the above-described object, the drum-type washing and drying machine of the present invention has a water tank and a hole through which water and air can be passed, and is rotatably arranged in the water tank to store laundry. And a drum that is rotationally driven by the driving means, a circulation air passage provided in the lower part outside the water tank so as to communicate with the inside of the water tank, and circulating air for drying through the circulation air passage and the water tank. A part of the circulating air passage connected to the water tank is branched into a first branch passage and a second branch passage extending upward from the lower joining portion, respectively. The upper portions of the first and second branch passages communicate with the inside of the water tank through first and second vent holes formed at positions where bubbles generated in the water tank are difficult to enter, respectively. Of the first and second vent holes, The lower end position of the second ventilation port where the rotation direction at the time of dewatering is downward is set to be lower than the lower end position of the first ventilation port at which the rotation direction when the drum is dewatered is upward. It is characterized by that.

  According to the present invention, a part of the circulation air passage is branched into the first and second branch passages, and the upper portions of the first and second branch passages are connected to the first and second vent holes. The first and second vent holes are respectively formed at heights where bubbles generated in the water tank are difficult to enter, so that the first and second air holes are formed in the water tank. It is possible to prevent bubbles from entering from the vent.

  Here, among the first and second vents, the inventors of the second vent in which the rotation direction when the drum is dewatered is downward, and the second vent is the first in which the rotation direction when the drum is dewatered is upward. It has been found that bubbles and water droplets are less likely to enter than the first vent and can be formed at a position lower than the first vent.

  Therefore, in the present invention, the lower end position of the second ventilation port where the rotation direction when the drum is dewatered is downward is lower than the lower end position of the first ventilation port where the rotation direction when the drum is dewatered is upward. By setting so as to be, the length to the junction of the second branch that communicates with the second vent can be made shorter than the length to the junction of the first branch. Therefore, the flow path resistance of the second branch path can be made smaller than that of the first branch path, and accordingly, the flow path resistance can be reduced and the circulating air flow rate can be increased.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, FIG. 3 shows an overall configuration of a drum type washing and drying machine. 3, the outer box 1 forming the outer shell of the washing / drying machine has a laundry doorway 2 on the front side (left side in FIG. 3), and a base plate having support legs 3 and the like on the bottom. 4 is provided. On the front side of the outer box 1, a door 5 that opens and closes the laundry entrance 2 is rotatably provided. In the outer box 1, a water tank 7 capable of storing water elastically supported by a plurality of suspensions 6 (only one is shown in FIG. 3) is disposed, and a drum 8 rotates in the water tank 7. It is provided as possible.

  The water tank 7 has a cylindrical shape with a closed rear surface, and is arranged in a horizontal axis shape in which the direction of the axis is the front-rear direction (the left-right direction in FIG. 3), and in an upwardly inclined state. As shown in FIG. 2, an annular tank cover 9 is attached to the front part of the water tank 7, and a circular opening 10 is formed at the center of the tank cover 9. The tank cover 9 constitutes a part of the water tank 7. A flexible bellows 11 is provided between the peripheral edge of the opening 10 and the laundry doorway 2 in a watertight manner so as to prevent scattering of water from the water tank 7 to the outside. Yes.

  Similarly to the water tank 7, the drum 8 has a cylindrical shape with a closed rear surface. The drum 8 has a horizontal axis whose longitudinal direction is the front-rear direction, and is disposed in an upwardly inclined state. A large number of holes 12 through which water and air can flow are formed in the peripheral wall (body portion) of the drum 8, and a plurality of baffles 13 are provided on the inner surface of the peripheral wall. A rotary balancer 14 having a liquid-filled annular shape is provided at the front portion of the drum 8 and has a circular opening 15. The opening 15 faces the laundry entrance 2 of the outer box 1 through the opening 10 of the water tank 7. Laundry (not shown) put in from the laundry entrance 2 is accommodated in the drum 8. A plurality of hot air inlets 16 are formed on the rear surface of the drum 8.

  A motor 17 is provided on the back side of the water tank 7, and a rotating shaft 17 a of the motor 17 is connected to the rear surface portion of the drum 8. The drum 8 is directly driven to rotate by the motor 17, and the motor 17 constitutes drive means for driving the drum 8 to rotate. In this case, the motor 17 is constituted by an outer rotor type DC brushless motor. A drain port 18 is formed at the bottom of the bottom of the water tank 7, a drain valve 19 is connected to the drain port 18, and a drain hose 20 is connected to the drain valve 19. The water in the water tank 7 is discharged out of the machine through the drain hose 20 from the drain port 18 by opening the drain valve 19.

  A blower duct 21 is disposed on the base plate 4 below the water tank 7. A fan casing 23 of a blower 22 constituting a blower is connected to the rear portion of the blower duct 21. The discharge port 23a of the fan casing 23 is connected to the air supply duct 25 via a connection hose 24 having a bellows shape. The air supply duct 25 is disposed on the back side of the water tank 7 so as to bypass the left side of the motor 17. The upper portion of the air supply duct 25 communicates with the inside of the water tank 7 through a rear vent 26 formed in the rear surface portion of the water tank 7. The blower 22 is configured to rotationally drive a blower blade 27 composed of a centrifugal fan disposed in the fan casing 23 by a fan motor 28 provided outside the fan casing 23.

  The blower duct 21 has a front inlet 30 at the front, and is connected to the exhaust duct 32 via a connection hose 31 having a bellows shape. As shown in FIGS. 1 and 2, the exhaust duct 32 is provided at the front portion of the tank cover 9. The exhaust duct 32 is branched into a first branch passage 34 extending from the lower junction portion 33 toward the upper left and a second branch passage 35 extending from the junction portion 33 toward the upper right. A junction 33 is connected to the connection hose 31.

  A first vent 36 composed of a plurality of through holes is formed on the surface on the opening 10 side in the upper part of the first branch path 34, and the upper part of the first branch path 34 has its first It communicates with the inside of the water tank 7 through the vent 36. In addition, a second ventilation port 37 composed of a plurality of through holes is also formed on the surface of the upper portion of the second branch path 35 on the opening 10 side. It communicates with the inside of the water tank 7 through two vents 37.

  In this case, the first and second vent holes 36 and 37 are arranged at a height where bubbles generated in the water tank 7 are difficult to enter. Further, the lower end position 37a of the second ventilation port 37 in which the rotation direction during the dehydration of the drum 8 (the direction of arrow A in FIG. 1) faces downward is the rotation direction during the dehydration of the drum 8 (the direction of arrow A in FIG. 1). Is set so as to be lower than the lower end position 36a of the first ventilation port 36 facing upward. In FIG. 1, the vertical difference between the lower end position 37 a of the second vent 37 and the lower end position 36 a of the first vent 36 is indicated by S.

  Here, a water tank is formed by the exhaust duct 32 having the first and second branch paths 34, 35, the connection hose 31, the blower duct 21, the fan casing 23, the connection hose 24, and the air supply duct 25. 7 constitutes a circulation air passage 38 communicating with the inside. The circulation air passage 38 is provided in the lower part outside the water tank 7 in the outer box 1.

  In the front part of the tank cover 9, a space part 40 is formed between the tip part of the first branch path 34 and the tip part of the second branch path 35, and the opening part 10 is formed in the space part 40. As a lighting means for illuminating the inside, a light emitting element unit 41 having a light emitting element made of, for example, an LED is provided. A filter installation part 42 is provided in the vicinity of the front entrance 30 of the air duct 21, and a lint filter 43 is detachably installed on the filter installation part 42. The lint filter 43 can be taken in and out through a filter entrance 44 provided at the lower portion of the outer box 1.

  Of the circulation air passage 38, an evaporator 46 is disposed in the front portion and a condenser 47 is disposed in the rear portion in the air duct 21. Although neither the evaporator 46 nor the condenser 47 is shown in detail in detail, the evaporator 46 and the condenser 47 are configured by arranging a large number of heat transfer fins at a fine pitch on the refrigerant circulation pipe, and are excellent in heat exchange. The wind flowing through the air duct 21 passes between the heat transfer fins. The evaporator 46 and the condenser 47 constitute a heat pump 48 together with a compressor and a throttle valve (not shown). In this heat pump 48, a compressor, a condenser 47, a throttle valve, and an evaporator 46 are cycle-connected in this order by a connecting pipe (refrigeration cycle), and the refrigerant is circulated by operating the compressor. It has become.

  Here, when the compressor of the heat pump 48 is operated, the refrigerant sealed in the heat pump 48 is compressed to become a high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant flows into the condenser 47 and the air in the air duct 21. Exchange heat with. As a result, the air in the air duct 21 is heated in the condenser 47, and conversely, the temperature of the refrigerant is lowered and liquefied. The liquefied refrigerant passes through the throttle valve and is depressurized, and then flows into the evaporator 46 and vaporizes. Thereby, the evaporator 46 cools the air in the blower duct 21. The refrigerant that has passed through the evaporator 46 is returned to the compressor. In the drying process described later, the condenser 47 of the heat pump 48 functions as a heating unit, and the evaporator 46 functions as a dehumidifying unit.

  In the upper part of the outer box 1, a power supply system control unit 50 and a display system control unit 51 necessary for controlling the washing / drying machine, a water supply valve 52 for supplying water into the water tank 7, and a water supply case 53. And a water supply hose 54 are provided.

  In the above-described drum type washing and drying machine, when the laundry is stored in the drum 8, when the standard operation course is selected and set and the operation is started, the control unit 50 makes the water supply valve 52 and the drainage valve as well known. 19. By controlling the motor 17, the fan motor 28, the compressor, etc., washing, intermediate dehydration, rinsing, final dehydration, and drying are automatically performed.

  In the washing process, first, a water supply operation for supplying water into the water tank 7 through the water supply case 53 and the water supply hose 54 is performed by opening the water supply valve 52 with the drain valve 19 closed. At this time, the detergent previously stored in the water supply case 53 is supplied into the water tank 7 together with the water to be supplied. The water containing the detergent supplied into the water tank 7 is stored in the water tank 7. Thereafter, the laundry in the drum 8 is washed by rotating the drum 8 forward and backward at a low speed by the motor 17. During this washing process, bubbles due to detergent are generated in the water tank 7.

  At this time, the tank cover 9 at the front of the water tank 7 is formed with a first vent 36 that is located around the opening 10 and communicates with the first branch path 34, and the second branch. The second vent 37 that communicates with the passage 35 is formed, but the first and second vents 36 and 37 are formed at relatively high positions, and bubbles generated in the washing process are formed in the second vent 36 and 37. It is possible to prevent the first and second vent holes 36 and 37 from entering the first and second branch paths 34 and 35.

  When the washing process is completed, the drain valve 19 is opened to perform a draining operation for discharging the water (washing water) in the water tank 7 from the drain port 18 to the outside of the machine. Then, an intermediate dehydration process is performed in which the laundry in the drum 8 is centrifugally dehydrated by rotating in one direction (the direction of arrow A in FIG. 1). Water released from the laundry by the intermediate dehydration is also discharged from the drain port 18 to the outside of the machine.

  In this intermediate dehydration process, when a quantity of water that cannot be covered by the drainage capacity of the drainage path is squeezed out from the laundry, the bubbles and water once accumulate in the lower part of the aquarium 7 and then drained little by little. Become. In such an initial stage of dehydration, bubbles and water accumulated in the lower part of the water tank 7 are swept up by the rotation of the drum 8, so that bubbles and water droplets are generated in the first and second vent holes. 36 and 37 may enter the first and second branch passages 34 and 35, and eventually the circulation air passage 38, but the first and second vents 36 and 37 are relatively free as described above. Since it is formed at a high position, bubbles and water droplets can be prevented from entering the first and second branch paths 34 and 35 from the first and second vent holes 36 and 37.

  In this case, among the first and second vent holes 36 and 37, in particular, the left first vent hole 36 in which the rotation direction of the drum 8 (arrow A direction) faces upward is the rotation direction of the drum 8 (arrow arrow). (A direction) is formed at a position higher than the second ventilation port 37 on the right side facing downward, so that bubbles and water droplets accompanying the rotation of the drum 8 are further prevented from entering from the first ventilation port 36. it can. Further, the right side where the rotation direction of the drum 8 is downward is less likely to raise bubbles in the water tank 7, and the uppermost surface of the bubbles is lower than the left side. For this reason, the right second vent 37 is formed at a position lower than the first vent 36 because bubbles and water droplets accompanying the rotation of the drum 8 are less likely to enter than the first vent 36. be able to.

  When the intermediate dehydration process is completed, a rinsing process is performed. The rinsing process is performed in the same manner as the washing process except that no detergent is used. First, the water supply operation of supplying water into the water tank 7 through the water supply case 53 and the water supply hose 54 is performed by opening the water supply valve 52 with the drain valve 19 closed. After that, the laundry in the drum 8 is rinsed by rotating the drum 8 forward and backward at a low speed by the motor 17.

  When the rinsing process is completed, the drain valve 19 is opened to perform a draining operation for draining the water in the water tank 7 from the drain port 18 to the outside of the machine. By rotating in the direction of arrow A in FIG. 1, a final dehydration process is performed in which the laundry in the drum 8 is centrifugally dehydrated. The water released from the laundry by this final dehydration process is also discharged out of the machine from the drain port 18. When the rinsing process is performed a plurality of times, the above-described intermediate dehydration process is also performed between the rinsing processes.

  When the final dehydration process is completed, a drying process is performed. This drying process is performed by operating the fan motor 28 of the blower 22 and the compressor of the heat pump 48 while rotating the drum 8 in both forward and reverse directions at a low speed by the motor 17.

  Of these, as the drum 8 is rotated in both forward and reverse directions at low speed, the laundry in the drum 8 is repeatedly lifted by the baffle 13 and dropped. When the fan motor 28 of the blower 22 is actuated, the air in the blower duct 21 is sucked into the fan casing 23 as shown by the arrow B in FIG. The sucked air is supplied from the discharge port 23a through the connection hose 24 and the air supply duct 25 into the water tank 7 through the rear vent port 26. At this time, the air in the air duct 21 is heated and warmed in the process of passing through the condenser 47, so that warm air is supplied into the water tank 7. The hot air supplied into the water tank 7 is supplied into the drum 8 mainly from the hot air inlet 16 at the rear part of the drum 8 and the hole 12 of the drum 8. The warm air supplied into the drum 8 flows from the rear part to the front part in the drum 8, and in this process, it contacts the laundry and takes away moisture.

  The air deprived of moisture from the laundry passes through the first and second vent holes 36 and 37 at the front of the water tub 7 and, as indicated by arrows B1 and B2 in FIG. And flow into the second branch 35. Then, the air that has flowed through the first branch path 34 and the air that has flowed through the second branch path 35 merge at the lower junction 33, and thereafter, as shown by arrow B in FIG. 31, passes through the front inlet 30, and is returned into the air duct 21. The air returned into the air duct 21 is cooled and dehumidified in the evaporator 46. The dehumidified air is heated again in the condenser 47 to be warmed and supplied through the air supply duct 25 into the water tank 7 again. By repeating this, the laundry is dried. In this process, lint generated from the laundry is captured by a lint filter 43 provided near the front entrance 30 of the air duct 21.

According to the above-described embodiment, the following operational effects can be obtained.
In the circulation air passage 38, a part of the exhaust duct 32 connected to the water tank 7 is branched into the first and second branch passages 34, 35, so that the circulation air passage area can be expanded, and the circulation air The flow rate can be increased.

  Further, in the configuration in which the upper portions of the branched first and second branch paths 34 and 35 are communicated with the inside of the water tank 7 through the first and second vent holes 36 and 37, the first and second The air vents 36 and 37 are formed at positions where the bubbles generated in the water tank 7 are difficult to enter, thereby preventing the bubbles from entering from the first and second air vents 36 and 37 as much as possible. can do.

  Of the first and second vent holes 36 and 37, the second vent hole 37 in which the rotation direction (arrow A direction) when the drum 8 is dewatered faces downward is the rotation direction when the drum 8 is dewatered. Since bubbles and water droplets are less likely to enter as compared to the first vent 36 that faces upward, the first vent 36 can be formed at a position lower than the first vent 36. Accordingly, the second branch communicating with the second vent 37 is set by setting the lower end position 37a of the second vent 37 to be lower than the lower end position 36a of the first vent 36. The length of the path 35 to the junction 33 can be made shorter than the length of the first branch path 34 to the junction 33. Therefore, the flow path resistance of the second branch path 35 can be made smaller than that of the first branch path 34, compared to the case where the lengths of the first branch path and the second branch path are set to the same length. The channel resistance can be reduced, and the circulating air flow rate can be increased.

  In the tank cover 9, the interior of the opening 10 is illuminated by providing the light emitting element unit 41 that illuminates the inside of the opening 10 in the space 40 between the first branch 34 and the second branch 35. can do. Moreover, the space part 40 can be used effectively.

(Second Embodiment)
FIG. 4 shows a second embodiment of the present invention. This second embodiment is different from the first embodiment described above in the following points.
That is, in the first branch path 34 on the left side of the exhaust duct 32, the first branch path 34 is disposed at a position corresponding to the first vent 36 and the first vent path 36 side. A first rib 61 is provided on the side opposite to the air vent 36 (on the side opposite to the first air vent 36). The first rib 61 is partitioned upward, and the first rib 61 is provided above the first branch path 34. A first bulging portion 62 that bulges the first branch path 34 outward is provided so as to escape. The length from the base end portion to the tip end portion of the first rib 61 is set to be substantially the same as the length from the lower end position 36 a to the upper end position 36 b of the first vent hole 36.

  In the above-described configuration, in the washing process, intermediate dehydration process, or final dehydration process, bubbles or water droplets generated in the water tank 7 should intrude into the first branch 34 from the first vent 36. Even if it does, those bubbles and water splash will be prevented from penetrating further by the first rib 61. Bubbles and water droplets that are prevented from further intrusion by the first rib 61 are returned from the first vent 36 to the water tank 7 side, as indicated by an arrow C1 in FIG. Thereby, it can prevent more reliably that a bubble and water splash penetrate | invade from the 1st ventilation hole 36 to the back of the 1st branch path 34. FIG.

  Further, a part of the air discharged from the first vent 36 into the first branch passage 34 flows around the first rib 61 as shown by an arrow B3 in FIG. Since the first bulging portion 62 is provided in the upper part of the first branch path 34, it is possible to suppress the flow path resistance from being increased by the first rib 61 as much as possible.

(Third embodiment)
FIG. 5 shows a third embodiment of the present invention. This third embodiment is different from the above-described second embodiment in the following points.
That is, in the second branch path 35 on the right side of the exhaust duct 32, the second branch path 35 is disposed at a position corresponding to the second vent 37, the second vent path 37 side, and the second vent path 37. A second rib 63 for partitioning upward is provided on the side opposite to the vent 37 (on the side opposite to the second vent 37), and from the second rib 63 on the second branch path 35. A second bulging portion 64 that bulges the second branch path 35 outward is provided so as to escape. The length from the proximal end portion to the distal end portion of the second rib 63 is shorter than the length from the lower end position 37 a to the upper end position 37 b of the second ventilation port 37, and the proximal end portion of the first rib 61. Is set shorter than the length from the tip to the tip.

  In the above-described configuration, in the washing process, the intermediate dehydration process, or the final dehydration process, bubbles or water droplets generated in the water tank 7 should intrude into the second branch 35 from the second vent 37. Even so, these bubbles and water droplets are prevented from entering further by the second rib 63. Bubbles and water droplets that are prevented from further intrusion by the first rib 61 are returned from the second vent 37 to the water tank 7 side, as indicated by an arrow C2 in FIG. Thereby, it can prevent more reliably that a bubble and water splash penetrate | invade from the 2nd ventilation hole 37 to the back of the 2nd branch path 35. FIG.

  Further, a part of the air discharged from the second vent 37 into the second branch path 35 flows around the second rib 63 as shown by an arrow B4 in FIG. Since the second bulging portion 64 is provided in the upper part of the second branch path 35, it is possible to suppress the increase in flow path resistance due to the second rib 63 as much as possible.

  Further, as described above, of the first and second vent holes 36 and 37, the second vent hole 37 whose rotation direction when the drum 8 is dewatered is downward is the rotation direction when the drum 8 is dewatered. Since bubbles and water droplets are less likely to enter compared to the first vent 36 that faces upward, the length of the second rib 63 can be set shorter than the length of the first rib 61. Thereby, the flow path resistance by the second rib 63 can be minimized.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
The drying means is not limited to the heat pump 48, and an electric heater may be used.
A configuration in which a part of the circulation air passage 38 is branched into the first and second branch passages 34 and 35 may be applied to the air supply duct 25 side.

1 is a longitudinal front view of an exhaust duct portion showing a first embodiment of the present invention. Perspective view of the exhaust duct Longitudinal side view of drum-type washer / dryer FIG. 1 equivalent diagram showing a second embodiment of the present invention FIG. 1 equivalent view showing a third embodiment of the present invention

Explanation of symbols

  In the drawings, 1 is an outer box, 7 is a water tank, 8 is a drum, 9 is a tank cover, 12 is a hole, 17 is a motor (drive means), 22 is a blower (blower means), 32 is an exhaust duct, and 33 is a junction. , 34 is a first branch path, 35 is a second branch path, 36 is a first vent hole, 36a is a lower end position, 37 is a second vent opening, 37a is a lower end position, 38 is a circulation air path, 48 Is a heat pump, 46 is an evaporator, 47 is a condenser, 61 is a first rib, 62 is a first bulge, 63 is a second rib, and 64 is a second bulge.

Claims (3)

A tank,
A drum which has a hole through which water and air can pass and is rotatably arranged in the water tub, which accommodates laundry and is driven to rotate by driving means;
A circulation air passage provided in the lower part outside the water tank so as to communicate with the inside of the water tank;
An air blowing means for circulating air for drying through the circulation air passage and the water tank;
A portion of the circulating air passage connected to the water tank branches into a first branch passage and a second branch passage extending upward from the lower junction, respectively. The upper part of the branch passage is configured to communicate with the inside of the water tank through first and second ventilation holes formed at positions where bubbles generated in the water tank are difficult to enter, respectively. Of the second vent holes, the lower end position of the second vent hole where the rotation direction when the drum is dewatered is downward, and the first vent hole where the rotation direction when the drum is dewatered is upward. A drum-type washing and drying machine, which is set to be lower than a lower end position.   The first branch path is partitioned upward into the first vent side and the anti-first vent side at a position corresponding to the first vent in the first branch path. The drum-type washer / dryer according to claim 1, further comprising a first rib.   In the second branch path, the second branch path is partitioned upward into the second vent side and the anti-second vent side at a position corresponding to the second vent. The drum-type washing and drying machine according to claim 2, wherein a second rib is provided, and the length of the second rib is set shorter than the length of the first rib.

Images