JP2018148967A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing and drying machine capable of performing a drying operation with reduced power consumption while lowering the humidity of air to be discharged into a room in drying.SOLUTION: The washing and drying machine includes: an outer tub whose inside part becomes a drying chamber during drying; a rotary drum or inner tub which is rotatably arranged in the outer tub and which accommodates laundry; a motor which drives the rotary drum or inner tub; a housing which supports the outer tub; and a drying device which is provided in the housing and has a fan and heating means and which blows hot air from a blowing nozzle to the laundry in the rotary drum or inner tub and circulates the hot air by the fan via a ventilation port for flowing air in the outer tub and a dehumidifying mechanism, and an exhaust port which is communicated with the dehumidifying mechanism and exhausts air from the outer tub to outside the housing. In the washing and drying machine, a suction valve is provided to cause the fan to suck the air stored in the housing during a drying operation on an upstream side of the fan of the dehumidifying mechanism. By driving the fan, air in the outer tub is exhausted via the exhaust port.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a washing and drying machine provided with means for drying clothes.

  Drying clothes with a washing and drying machine that can perform washing to drying continuously creates high-temperature and low-humidity air with a blower fan and heat source, and blows it into the washing tub to raise the temperature of the clothes. This is done by evaporating the moisture and discharging the evaporated moisture out of the machine. There are Patent Document 1 and Patent Document 2 as conventional techniques related to this.

  There are two methods for removing the evaporated water: an exhaust system that exhausts the water as it is outside the washing dryer, and a dehumidification system that cools the evaporated water to condense and removes the water (circulates the same air). In addition, air cooling or water-cooling dehumidification is performed in the first half of the drying process to reduce time and reduce the amount of water used and power consumption. In the second half, the surrounding dry air is supplied and the warm air after blowing on the laundry is removed. There is a method to exhaust as it is.

  In Patent Document 1, “a water tank having a drum for storing laundry, a circulation path provided in communication with the water tank, and heating means interposed in the circulation path for circulatingly supplying hot air during drying operation” And air blowing means, outside air introducing means for introducing outside air into the sealed space of the water tank and the circulation path, and a part of the air in the sealed space can be discharged to the outside, and the exhaust interposed in the discharging path An air discharge means comprising a valve, and following the end of the drying operation by hot air, the cooling operation by blowing air from the blower means is performed, and the exhaust valve of the air discharge means is opened to close the inside of the sealed space The air is discharged to the outside ”. In Patent Document 2, an exhaust valve is provided at the upper part of the dehumidification duct, and the dehumidification duct upstream of the exhaust valve is communicated with a main body exhaust port provided at the upper rear part of the outer frame. The valve is used to exhaust the drying air containing moisture into the room through the main body exhaust port ”.

JP 2008-104715 A JP 2014-64746 A

  However, the conventional technology that exhausts hot air after spraying the laundry without dehumidifying can reduce the time and the amount of water used and power consumption. If air is exhausted as it is and the room temperature is low, condensation may occur and the indoor environment may be deteriorated.

  Therefore, the present invention is to provide a washing and drying machine that suppresses the increase in humidity and condensation around the washing and drying machine and reduces the power consumption during the drying operation.

  In order to solve such a problem, a washing and drying machine according to the present invention includes an outer tub whose inside becomes a drying chamber during drying, a rotating drum that is rotatably disposed in the outer tub, and stores laundry. An inner tub, a motor for driving the rotating drum or the inner tub, a casing for supporting the outer tub, and a drying device provided in the casing, having a fan and a heating means, from a blowing nozzle A hot air is blown into the rotating drum or the laundry in the inner tub, and a ventilation device for flowing the air in the outer tub and a drying device that circulates to the fan via a dehumidification mechanism, and communicates with the dehumidification mechanism In addition, in a washer / dryer provided with an exhaust port for exhausting air from the outer tub to the outside of the housing, the air collected in the housing during the drying operation is sucked into the fan upstream of the dehumidifying mechanism. An intake valve is provided By driving the fan, via the outlet, characterized by evacuating the air in the outer tub.

  According to the present invention, in the latter half of the drying operation, the intake valve is opened, the high-temperature air accumulated in the housing is sucked into the fan, and the fan is driven to reduce the humidity of the humid air by the dehumidifying mechanism. However, it is possible to reduce the power consumption of the heater in the latter half of the drying process by drying exhausted into the room, and it is possible to suppress deterioration of the indoor environment due to condensation.

1 is an external perspective view showing a drum type washing and drying machine according to a first embodiment of the present invention. It is a schematic sectional drawing which shows the internal structure of the drum type washing-drying machine which concerns on the 1st Example of this invention. It is a schematic sectional drawing of the washing-drying machine which concerns on the example of 1st Embodiment of this invention, and shows the flow of the air of the middle of a drying process. It is a schematic sectional drawing of the washing-drying machine which concerns on the 1st Example of this invention and shows the flow of the air of the drying process latter half. It is a table | surface which concerns on the 1st Example of this invention, and shows the operation state of the heater of a drying process, a cooling water valve, and an intake valve.

  Hereinafter, a drum type washing and drying machine according to a first embodiment of the present invention will be described with reference to the drawings as appropriate. FIG. 1 is an external perspective view showing a drum type washing / drying machine according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing the internal structure of the drum type washing and drying machine of FIG. 1 with the side plate removed.

  FIG. 3 relates to the first embodiment of the present invention and is a schematic cross-sectional view of a washing / drying machine showing the air flow in the middle of the drying process. FIG. 4 relates to the first embodiment of the present invention, and is a schematic cross-sectional view of a washing and drying machine showing the air flow in the latter half of the drying process. FIG. 5 (a) relates to the first embodiment of the present invention, and is a diagram showing operating states of the heater, cooling water valve, and intake valve in the drying process.

  The casing 1 constituting the outer shell is mounted on a base 1h, and includes a side plate 1a, a front cover 1c, a back cover 1d, a top cover 1e, and a lower front cover 1f. The left and right side plates 1a are connected by a U-shaped upper reinforcing material (not shown), a front reinforcing material 37, and a rear reinforcing material (not shown), and a box-shaped housing 1 including a base 1h. Is forming.

  Near the center of the front cover 1c, a door 9 is provided to close an insertion port for taking in and out the laundry 36, and is supported by a hinge (not shown) provided on the front reinforcing member 37 so as to be opened and closed. When the door opening button 9d is pressed, a lock mechanism (not shown) is released and opened, and when the door 9 is pressed against the front cover 1c, it is locked and closed. The front reinforcing member 37 has a circular opening for taking in and out the laundry 36 concentrically with an opening of the outer tub 2 described later.

  The operation panel 6 provided in the upper center of the housing 1 includes a power switch 39, operation buttons 12 and 13, and a display 14. The operation panel 6 is electrically connected to a control device 38 provided at the lower part of the housing 1. Further, on the left side of the operation panel 6, there is provided a drawer type tray 7 into which a detergent, a softening agent, or the like is charged. A drying filter 8 is provided on the right side of the top cover 1e. The dry filter 8 is provided with a mesh type filter to remove lint and the like. Further, the upper surface cover 1e is provided with a water supply hose connection port 16 from the water tap and a water absorption hose connection port 17 for remaining hot water in the bath. On the rear side of the drawer-type tray 7, water supply related parts such as a water supply electromagnetic valve (not shown), a bath water absorption pump (not shown), a water level sensor (not shown) and the like are provided.

  A cylindrical washing and dewatering tub (rotary drum as an inner tub) 3 that is rotatably supported has a plurality of through holes (not shown) for water flow and ventilation on its outer peripheral wall and bottom wall. The front end face is provided with an opening 3a for taking in and out the laundry 36. A fluid balancer 3c integrated with the washing and dewatering tub 3 is provided outside the opening 3a. The fluid balancer 3c encloses a fluid having a large specific gravity in the inside thereof, and when an eccentricity occurs due to a deviation of the laundry 36 when the washing and dewatering tub 3 rotates, the fluid balancer 3c Eccentricity is canceled by movement, and the balance of rotation is maintained. A plurality of lifters 3 b extending in the depth direction (axial direction) are provided on the inner peripheral wall of the washing and dewatering tub 3. When the washing and dewatering tub 3 rotates during washing and drying, the laundry 36 and the like are lifted along the peripheral wall by the lifter 3b and centrifugal force, and are repeatedly moved by gravity. Further, the rotation center axis of the washing and dewatering tub 3 is inclined so that the horizontal or opening side is higher.

  The cylindrical outer tub 2 encloses a washing / dehydrating tub 3 on the same axis, the front is open, and a motor 4 is attached to the outer center of the rear end face. A rotating shaft 4 a of the motor 4 passes through the outer tub 2 and is coupled to a metal flange 3 d provided on the back surface of the washing and dewatering tub 3. An outer tank cover 2 d that enables water storage in the outer tank 2 is provided at the opening on the front surface. A rubber bellows 10 is attached to the opening of the outer tank cover 2d, and the outer tank 2 is sealed with water by closing the door 9. The outer tub 2 is supported by a damper 5 whose lower side is fixed to the base 1h.

  A concave water receiving portion 2 f is provided on the bottom inner peripheral surface of the outer tub 2. The bottom surface of the water receiving portion 2f is an inclined surface that descends from the front side to the rear side. A drain port 21 is provided on the rear side of the water receiving portion 2f, and a drain hose 26 is connected thereto.

  A drainage valve 25 is provided in the middle of the drainage hose 26. By closing the drainage valve 25 and supplying water, water is stored in the outer tub 2, and when the drainage valve 25 is opened, the water in the outer tub 2 is used. Drain out.

  The drying duct 29 is installed inside the back surface of the housing 1 and is connected to a vent hole 2c provided in the rear part of the outer tub 2 by a rubber bellows hose 29a. A cooling water supply pipe 51 as a dehumidifying mechanism is built in the drying duct 29. A fan unit 40 is provided at the top of the housing 1, and warm air 43 is blown into the washing and dewatering tub 3 by the heater 31 and the fan 28 of the fan unit 40 during the drying operation. Between the fan unit 40 and the drying duct 29, the drying filter 8 that collects lint during the drying operation, the intake valve 44 that guides the air in the housing 1 to the fan unit 40, and the air in the outer tub 2 is indoors An exhaust port 45 for discharging is provided.

  In the washing process of the washing and drying course of the drum type washing and drying machine configured in this way, the laundry is put into the washing and dewatering tub 3 and water is supplied with the drain valve 25 closed, and the washing water is supplied to the outer tub 2. The laundry 36 is rotated by rotating the washing and dewatering tub 3 to wash the laundry 36. In the dewatering step, the drain valve 25 is opened to drain the washing water in the outer tub 2 and the washing and dewatering tub 3 is rotated to perform centrifugal dehydration. Then, after performing the dehydration process for a predetermined time, the process proceeds to the drying process while the drain valve 25 remains open.

  FIG. 3 shows the air flow during the circulation ventilation by the fan 28 in the middle of the drying process. In the middle of the drying process, the washing and dewatering tub 3 is rotated forward and backward while the drain valve 25 is kept open. Then, the control device 38 drives the fan 28 and blows the hot air 43 heated by the heater 31 onto the laundry 36 in the washing and dewatering tub 3. Water is evaporated from the laundry 36 by blowing the warm air 43. The air dampened with moisture from the laundry 36 flows into the drying duct 29 and then flows out from the cooling water supply pipe 51 to the wall surface in the drying duct 29 by opening a cooling water valve (not shown). It is dehumidified by contact with the cooling water 52. The air that has been dehumidified and has become low humidity and low temperature is sucked into the fan 28, reheated by the heater 31, and sprayed again onto the laundry 36 in the washing and dewatering tub 3. By repeatedly evaporating moisture from the laundry 36 and dehumidifying the air, the laundry 36 is dried. The cooling water 52 that has flowed out to the wall surface in the drying duct 29 passes through the drain port 21 and is discharged by the drain hose 26.

  In the latter half of the drying process, the heater 31 is turned off as shown in FIGS. Then, by opening the intake valve 44, the external air 46 sucked from the gap below the base 1 h rises by about 3 ° C. while receiving the exhaust heat of the outer tank 2, the motor 4 and the fan 28 while flowing through the side surface of the outer tank 2. It is heated and sucked into the fan 28 together with the high-temperature housing internal air 47 accumulated in the upper surface of the outer tub 2 and the space of the housing 1 until the middle of drying. Moisture evaporates from the laundry 36 by blowing the sucked internal air 48 on the laundry 36. The air dampened by removing moisture from the laundry 36 is sucked into the drying duct 29 and then dehumidified by coming into contact with the cooling water 52 flowing down the wall surface in the drying duct 29. Since the air path from the drying duct 29 to the drying filter 8 is closed by opening the intake valve 44, the air that has been dehumidified and has become low humidity and low temperature is provided between the intake valve 44 and the drying duct 29. It is discharged into the room through the exhaust port 45. By repeatedly evaporating the moisture from the laundry 36 and discharging the dehumidified air into the room, the laundry 36 is further dried. By performing the series of steps as described above, the process of the washing and drying course of the drum type washing and drying machine by the control device 38 is completed.

  The washing / drying machine configured as described above includes the laundry 36, the washing / dehydrating tub 3, the outer tub 2, the upper surface of the outer tub 2, and the internal air 47 stored in the space of the housing 1 until the middle of the drying process. By the residual heat drying using the stored heat, the power consumption of the heater 31 in the latter half of the drying process can be reduced.

Here, clothing 6kg, heater input 600W, air volume 1.5m ³ / min, cooling water 0.3-0.5
Under the condition of L / min, the preheat drying in which the heater 31 is turned off and the housing internal air 47 is blown in the latter half of the drying process is about 10 to 10% of the total power consumption of the drying process as compared with the case where preheat drying is not performed. 20% can be reduced.

  Furthermore, when the housing internal air 47 sucked into the fan 28 is heated to about 3 ° C. by exhaust heat from the outer tub 2, the motor 4, the fan 28, etc., it is dry compared with the case where the external air 46 is directly sucked. About 5% of the total power consumption of the process can be reduced.

  Further, even if the outside air 46 is sucked, the moisture of the laundry 36 is dehumidified from the exhaust port 45 by the drying duct 29 and then discharged into the room, so that the indoor environment can be prevented from deteriorating due to condensation.

  Further, by providing the exhaust port 45 between the intake valve 44 and the drying duct 29 incorporating the dehumidifying mechanism, the intake of the housing internal air 47 and the indoor space can be performed only by operating the intake valve 44 without providing the exhaust port 45 with a valve. This makes it possible to reduce costs by reducing the number of parts.

  In the first embodiment of the present invention, as shown in FIG. 5A, a cooling water valve is opened in the middle of the drying process to perform water cooling dehumidification. However, as shown in FIG. When the cooling water valve is opened only in the latter half of the process, or when cooling water is not used in the drying process as shown in FIG. 5C, the amount of cooling water used can be reduced or reduced. When cooling water is not used, the inner wall surfaces of the drying duct 29 and the outer tub 2 become a dehumidifying part by air cooling.

  As described above, according to the operation process of the drum type washer / dryer according to the first embodiment, in the latter half of the drying operation, the intake valve 44 is opened and the high-temperature housing internal air 47 accumulated in the housing is supplied to the fan 28. Inhalation and driving of the fan 28 reduce the power consumption of the heater 31 in the latter half of the drying process by the residual heat drying that exhausts the room while lowering the humidity of the humid air by the drying duct 29 that is a dehumidifying mechanism. It is possible to suppress the deterioration of the indoor environment due to condensation. In addition, since only the intake valve 44 can be operated, the housing internal air 47 can be sucked and discharged indoors, so that the cost can be reduced by reducing the number of parts. In addition, the amount of cooling water used can be reduced or reduced by opening the cooling water valve only in the latter half of the drying process or by not using cooling water in the drying process.

DESCRIPTION OF SYMBOLS 1 Case 1a Side plate 1c Front cover 1d Back cover 1e Top cover 1f Lower front cover 1h Base 2 Outer tank 2c Ventilation hole 2d Outer tank cover 2f Water receiving part 3 Washing / dehydration tank (inner tank)
3a Opening 3b Lifter 3c Fluid balancer 3d Flange 4 Motor 4a Rotating shaft 5 Damper 6 Operation panel 7 Tray 8 Drying filter 9 Door 9d Door opening button 10 Bellows
12, 13 Operation buttons 14 Indicator 16 Water supply hose connection port 17 Water absorption hose connection port 21 Drain port 25 Drain valve 26 Drain hose 28 Fan 29 Drying duct 29a Bellows hose 30 Hot air duct 30a Bellows 31 Heater 32 Blowout nozzle 33 Floor 36 Laundry 37 Front reinforcing material 38 Control device 39 Power switch 40 Fan unit 41 Fan case 42 Circulating air 43 Hot air 44 Intake valve 45 Exhaust port 46 External air 47, 48 Housing internal air 51 Cooling water supply pipe 52 Cooling water

Claims (2)

An outer tank whose inside becomes a drying chamber when drying;
A rotating drum or an inner tub that is rotatably arranged in the outer tub and accommodates laundry;
A motor for driving the rotating drum or the inner tank;
A housing for supporting the outer tub,
It has a fan and heating means, blows warm air from the blowing nozzle into the rotating drum or the laundry in the inner tub, and circulates to the fan via a ventilation port for flowing air in the outer tub and a dehumidifying mechanism A drying device,
An exhaust port communicating with the dehumidifying mechanism and exhausting out of the housing from the outer tub,
An intake valve is provided on the upstream side of the fan of the dehumidifying mechanism to suck the air stored in the enclosure during the drying operation into the fan, and the fan is driven to drive the external air through the exhaust port. A washer-dryer characterized by exhausting air in the tank. In the washing and drying machine according to claim 1,
A washing and drying machine, wherein the exhaust port is provided between the intake valve and the dehumidifying mechanism.

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