JP4635081B2 - Laundry dryer and dryer - Google Patents

Description

  The present invention relates to a laundry dryer for washing and drying clothes and a dryer for drying washed clothes (laundry).

  In order to dry laundry such as clothes containing moisture by washing with a dryer or a laundry dryer that can be used continuously from washing to drying, the air from the fan is heated by a heat source to raise the temperature and humidity. This air flow is blown into the washing tub or drying tub to raise the temperature of the laundry, and this air flow is blown onto the laundry to evaporate the moisture from the laundry. It was done by discharging outside the machine.

As a method of removing moisture evaporated from clothing, there has been known an exhaust system in which fresh air is constantly supplied and air containing moisture removed from the laundry is exhausted to the outside of the laundry dryer. There is known a “washing dryer” of a dehumidification system that removes moisture by cooling and condensing moisture evaporated from an object (for example, see Patent Document 1).
In addition, in order to shorten the drying time and reduce the amount of water used and power consumption, water-cooled dehumidification is performed in the first half of the drying process, the surrounding dry air is supplied in the second half, and the warm air after blowing on the laundry There is known a “washing machine” that exhausts air into an installation room as it is (see, for example, Patent Document 2).

JP 2008-104715 A JP 2008-110135 A

However, if water-cooled dehumidification is performed from the beginning of the drying process, heat is taken away from the circulating air, so the temperature rise of the clothing is slow, and the temperature of the clothing during constant rate drying is low, and the evaporation rate from the clothing is low. Become. For this reason, the drying efficiency of clothing is reduced, the drying time is lengthened, and it is difficult to reduce the amount of water used and power consumption.
In addition, the conventional method of exhausting warm air after being blown onto the laundry as it is, exhausts the humid air around the “washing machine” as it is, which has the problem of deteriorating the indoor environment. It was.
Then, an object of this invention is to provide the washing-drying machine and dryer which can suppress the deterioration of an indoor environment, and can perform the driving | running operation which reduced the amount of used water and power consumption in view of the above-mentioned problem.

In order to achieve the above object, the present invention provides an outer tub whose inside is a drying chamber during a drying process, a rotating drum or an inner tub that is rotatably arranged in the outer tub, and stores laundry, and a rotating drum or an inner tub. A motor that drives the tank, a housing that supports the rotating drum or the inner tank, a blowing path for blowing warm air to the rotating drum or the inner tank, a heating device, a drying device having a blowing means and a dehumidifying unit, and an outer A washing and drying machine provided with a drain hose for discharging water discharged from the tank, and in the drying process, air is circulated in the order of the blowing means, the heating means, the outer tank, the dehumidifying part, and the blowing means in order. During the operation, the heating means is stopped and the water-cooled dehumidification in the dehumidifying section is stopped, and all or a part of the air exhausted from the rotating drum or the inner tank is exhausted via the drainage hose. Circulation from the middle plate, rotating drum or inner tank Until the exhaust air is started that, and performing wet water cooling removal of the air.

  According to the present invention, by performing water-cooled dehumidification from the middle of the drying process, the temperature of the clothes rises quickly, and the temperature of the clothes at the time of constant rate drying increases and the amount of evaporation from the clothes increases. The required drying time is shortened, and the amount of water used and power consumption are reduced. In addition, during the drying operation, all or part of the air discharged from the rotating drum or the inner tub is exhausted from the drain hose to the drain outlet, so that the drying operation can be performed without exhausting humid air indoors. Environmental degradation is deterred.

  ADVANTAGE OF THE INVENTION According to this invention, the washing-drying machine and dryer which can suppress the deterioration of an indoor environment and can perform the drying operation which reduced the amount of water used and power consumption can be provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<First Embodiment>
FIG. 1 is an external perspective view showing a washing / drying machine 1 according to a first embodiment of the present invention.
The washing / drying machine 1 can wash and dry clothes, and can continuously perform washing to drying, and performs water-cooling dehumidification in the drying process. The temperature of the circulating air rises in a short time by 62 (see FIG. 2), and the drying operation is performed while performing water-cooling dehumidification with high-temperature circulating air in the middle panel, thereby shortening the time required for the drying process and using it. The amount of water and power consumption are reduced.

In the washing and drying machine 1, an outer frame 2 of a support member configured by combining a rust-proof steel plate and a resin molded product is attached to the upper portion of a base B of a rust-proof steel plate as a base support member by screwing or the like. .
The outer frame 2 is provided with a front cover 22 that forms a front case and a door 3 that can be opened and closed for putting in and out the laundry 30, and a rear cover 23 that forms a rear case on the back. Is provided. The outer frame 2, the front cover 22, the back cover 23, and the base B constitute a casing of the washing / drying machine 1.
Disposed above the door 3 is a door opening button 3b that is pressed to open the door 3 (in the direction of arrow α3 in FIG. 1) when the laundry 30 (see FIG. 2) is taken in and out of the washing / drying machine 1. Has been.

An operation panel 106 for allowing the user to operate the washing / drying machine 1 is provided on the upper portion of the front cover 22.
The operation panel 106 includes a power switch 139 for turning on / off the washing / drying machine 1 and a plurality of operation button switches for selecting each mode such as washing, washing / drying (continuous operation of washing / drying), and drying. 113, a start switch 112 and the like that are pressed when each mode is started. Further, the operation panel 106 is provided with a display 114 made of, for example, a 7-segment light emitting diode or a liquid crystal display device for informing the user of the operation state of the washing / drying machine 1.

FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 showing a normal drying process of the washing / drying machine 1 according to the first embodiment of the present invention.
As shown in FIG. 2, an outer tub 20 is disposed in the housing 3 such as the front cover 22 and the back cover 23 of the washing / drying machine 1 and the door 3, and this outer tub 20 is used during a washing and rinsing process. It plays a role of storing the washing water and receiving moisture removed from the laundry 30 during the drying process.
The outer tub 20 is opened at a portion facing the front door 3, and the inside having a cylindrical peripheral side plate 20 s and a flat back plate 20 o is formed in a short cylindrical shape having a large diameter of a cavity. Has been.

The outer tub 20 is supported at the lower part by a plurality of suspensions 21 attached to the base B via an elastic material such as synthetic rubber, and supported by the outer frame 2 so as not to fall down by a tension coil spring (not shown). . The suspension 21 includes a compression coil spring made of an elastic material for suppressing transmission of vibration of the outer tub 20, and a damper that attenuates the vibration of the outer tub 20 during dehydration by the viscous resistance of the hydraulic oil. Has been.
Inside the outer tub 20, there is disposed a short cylindrical hollow drum 29 into which the laundry 30 is put by opening the door 3. The rotary drum 29 is a metal flange 34 for the rotating drum. Is connected directly to a drum driving motor 36 via a main shaft 35 connected to the outer tank 20 and is rotatably supported by the outer tub 20 via the main shaft 35.

For example, the rotating drum 29 is formed in a hollow short columnar shape having a cylindrical peripheral surface plate and a flat back plate 20o that are open on the front side using a thin steel plate having a thin plate thickness and an outer peripheral portion. ing. Moisture removed from the laundry 30 at the time of centrifugal dehydration in the dehydration process and an air flow at the time of the drying process flow through the cylindrical peripheral plate and the flat back plate 20o on the outer peripheral portion of the rotary drum 29. A large number of small holes (not shown) are formed.
A plurality of lifters 33 are provided inside the rotating drum 29. During the washing process and the rinsing process, the lifters 33 rake up the laundry 30 after the laundry 30 is swung up to a high place as the rotary drum 29 is rotated about the main shaft 35 by the drum driving motor 36. “Dock washing” is repeatedly performed to drop to a low place, and dirt and detergent are effectively eluted from the laundry 30.

In addition, on the outer peripheral portion of the opening on the front side of the rotary drum 29, vibration due to unbalance of the laundry 30 during dehydration moves in a complementary manner to a position opposite to the unbalance of the laundry 30. Thus, a substantially circular fluid balancer 31 that reduces vibrations is provided.
A rubber packing 38 made of an elastic body is attached to the opening on the front side (the left side in FIG. 2) of the outer tub 20, and this packing 38 maintains the watertightness between the inside of the outer tub 20 and the door 3. Playing a role. This prevents water leakage during the washing process, the rinsing process, and the dehydrating process.
A drain port 37 opened at the bottom of the outer tub 20 is connected to the drain hose 9 via the drain valve 8.

  As shown in FIG. 2, the drying device 6 that dries the laundry 30 containing moisture in the rotary drum 29 is fixed (not shown) to the outer frame 2 at a distance from the outer tub 20 and contains moisture. A fan 61 which is a blowing means for sending an air flow to the laundry 30, a heater 62 which is a heating means for heating the air flow from the fan 61, and the heated air flow to the laundry 30 in the rotary drum 29. And a dehumidifying duct 5 that circulates toward the fan 61 after ventilation. As the air blowing means, in addition to the heater 62, other means for heating the air flow such as a heat pump may be used.

  When water-cooled dehumidification is performed during the drying process, cooling water (not shown) flows from the top to the bottom in contact with or in close proximity to the outer surface 5e of the dehumidifying duct 5, and this cooling water cools the dehumidifying duct 5 with water. Thus, the temperature in the dehumidifying duct 5 is lowered, and moisture (water vapor) contained in the air flowing through the dehumidifying duct 5 is condensed in the direction of the arrow α4 in FIG. The condensed water (liquid) is discharged out of the machine through the drainage hose 9.

The dehumidifying duct 5 of the drying device 6 and the ventilation port 32 formed in the flat back plate 20o of the outer tub 20 are connected substantially horizontally by, for example, a rubber bellows 4 having a flexible structure.
An intake valve 13 for sucking outside air into the dehumidification duct 5 is provided upstream of the fan 61 in the dehumidification duct 5, and an intake port 13 a that is opened and closed by the intake valve 13 is opened in the dehumidification duct 5. ing.

  FIG. 3 is a cross-sectional view taken along line AA of FIG. 1 showing the residual heat drying in the latter half of the drying process in which the outside air suction and the drainage hose 9 exhaust of the washing and drying machine 1 of the first embodiment according to the present invention are performed.

The intake valve 13 can be freely opened and closed in the dehumidification duct 5 by a motor (not shown), and the intake valve 13 is closed to the outside air shown in FIG. From the open state with respect to the outside air shown in FIG. 3 in the direction of the arrow α2 from the open state with respect to the outside air shown in FIG. It rotates and shifts to a closed state with respect to the outside air shown in FIG. 2 during a normal drying process.
The outlet of the heater 62 provided downstream of the fan 61 of the drying device 6 and the blowing nozzle 11 connected to the opening of the outer tank 20 that blows a high-temperature air flow for drying heated by the heater 62 are the outer tank 20. Is connected via a bellows 7 having a flexible structure at a position above and outside the front surface of the front, and vibration of the outer tub 20 is absorbed by the expansion and contraction of the bellows 7.

Various sensors for measuring various conditions of the washing / drying machine 1 will be described.
2 flows in the dehumidification duct 5 to control the current to the heater 62 through the intake port 13a (the right side of the fan 61 in FIG. 2) and the discharge port (the left side of the fan 61 in FIG. 2). A temperature sensor 152 (see FIG. 7 showing the control device 138 of the washing / drying machine 1) for detecting the temperature of the airflow is provided.
Further, a temperature sensor 152 (such as a thermistor) for detecting the dryness of the laundry 30 is provided near the drain valve 8 shown in FIG. 2 and below the dehumidifying duct 5 (near the rubber bellows 4 shown in FIG. 2). 7).

In addition, a water level sensor 134 (see FIG. 7) that detects the water level in the outer tub 20 during the washing and rinsing process and detects the pressure in the outer tub 20 during the drying process communicates with the outer tub 20. Attached. In this water level sensor 134, since the electric capacity changes due to the pressure applied to the diaphragm changing the gap of the diaphragm in accordance with the water level, the oscillation frequency of the oscillation circuit changes in accordance with the change in the electric capacity. It is possible to know the pressure (water level) in the outer tub 20 by detecting.
In addition, when the rotating drum 29 is rotated at a high speed during the dehydrating process, the rotating drum 29 is stopped in order to stop the dewatering operation when excessive vibration occurs in the outer tub 20 that supports the rotating drum 29 via the main shaft 35. The washing / drying machine 1 is provided with a vibration sensor 153 (see FIG. 7) that detects vibration of the outer tub 20 and the like.

FIG. 4 is a diagram illustrating operating states of the heater 62, the cooling water valve 19, and the intake valve 13 in the drying process according to the first embodiment of the present invention.
In the description of the present embodiment, “first half” may be read as “early” and “second half” may be read as “final”. As shown in FIG. 9, the length of the “first half” is a time until the temperature of the laundry 30 is sufficiently increased, and the length of the “middle board” is a time until the laundry 30 reaches a predetermined moisture content, The length of the “second half” is preferably a length that allows the laundry 30 to be sufficiently dried by the remaining heat and the temperature in the outer tub 20 to be sufficiently lowered.

  In the first example shown in FIG. 4A, in the first half of the drying process, the heater 62 is turned on, the cooling water valve 19 is closed (that is, water-cooled dehumidification is not performed), and the intake valve 13 is closed (that is, water cooling and dehumidification is not performed). The air is circulated in the machine without taking in outside air), and the temperature of the laundry 30 is sufficiently raised. In the middle, the water is sufficiently removed from the laundry 30 while the cooling water valve 19 is opened to perform water cooling and dehumidification. In the latter half, the heater 62 is turned off, the cooling water valve 19 is closed to stop water cooling and dehumidification, the intake valve 13 is opened, the air saturated with water vapor is replaced with the outside air, and the laundry 30 is sufficiently dried and the temperature inside the machine is increased. Reduce.

In the second example shown in FIG. 4B, the first half and the second half of the drying process are the same as the first example described above, but water-cooling dehumidification is not performed until the middle of the middle of the drying process, and at the end of the drying process. Perform water cooling and dehumidification. In the second example, the temperature of the laundry 30 can be further increased as compared with the first example.
In the 3rd example shown in Drawing 4 (c), water cooling dehumidification is not performed at all in the above-mentioned 2nd example. In the third example, the temperature of the laundry 30 can be further increased as compared with the second example.
The fourth example shown in FIG. 4D is the same as the first example described above except that the heater 62 is turned off, the cooling water valve 19 is closed, and the intake valve 13 is opened in the middle of the drying process. The state of the heater 62, the cooling water valve 19, and the intake valve 13 in the middle of the drying process is the same as that of the remaining heat drying in the latter half. Therefore, during this time, air saturated with water vapor is replaced with outside air, so that moisture is more effectively removed depending on the laundry 30, and power for operating the heater 62 can be saved.

  FIG. 5 is a longitudinal sectional view showing a connection structure between the drain hose 9 and the drain trap 10 according to the first embodiment of the present invention. FIG. 5 (a) is a diagram illustrating an ordinary general drain hose 9 according to the embodiment. FIG. 5B is a longitudinal sectional view showing a connection structure of the drain trap 10, and FIG. 5B is a connection structure of the drain hose 9 and the drain trap 10 when the inner diameter of the drain hole 39 of the embodiment is smaller than the outer diameter of the drain hose 9. FIG. 5C is a longitudinal sectional view showing a connection structure between a general drain trap 10 attached to the waterproof pan P and the drain hose 9.

  The connection part of the drainage hose 9 connected to the drainage port 37 at the lower part of the outer tub 20 shown in FIG. 2 and the drainage hole 39 of the installation surface G of the washing / drying machine 1 is generally shown in FIG. As described above, the space between the drainage hose 9 and the drainage hole 39 is hermetically sealed with a sealing material 39a or the like, and the exhaust gas discharged from the outer tub 20 and passing through the drainage hose 9 flows through the drain trap 10 as indicated by arrow β1. And is configured so as not to leak into the room in which the washing / drying machine 1 is installed.

  When the inner diameter of the drainage hole 39 is smaller than the outer diameter of the drainage hose 9, the drainage hose 9 is fitted on one side and the other side is fitted on the drainage hole 39 as shown in FIG. The drainage hose 9 connected to the outer tub 20 and the drainage hole 39 of the installation surface G of the washing / drying machine 1 are connected via the adapter 39b, and the exhaust gas passing through the drainage hose 9 passes through the drainage trap 10 by the arrow β1. It is configured so that it does not leak into the room where the washing and drying machine 1 is installed. The adapter 39 b hermetically seals between the drain hose 9 and the drain hole 39.

5A and 5B illustrate the case where the sealing member 39a and the adapter 39b, which are sealing members, are configured separately from the drain hose 9, respectively, the sealing member 39a that is a sealing member is illustrated. The adapter 39b may be configured integrally with the drain hose 9, respectively.
Further, as shown in FIG. 5C, in the case of a general drain trap 10 attached to the waterproof pan P, since the hole 10a through which water from the waterproof pan P flows is opened, the lid 39c is waterproofed. Attached to the pan P and the adapter 39b, the drainage hose 9 and the drainage trap 10 are kept sealed, and the exhaust gas passing through the drainage hose 9 flows through the drainage trap 10 as indicated by arrow β2 and is discharged. It is configured so that it does not leak into the room where it is installed.

FIG. 5C illustrates the case where the drain hose 9 and the adapter 39b and the lid 39c forming the seal member are configured separately, but the drain hose 9 and the adapter 39b of the seal member are configured integrally. May be.
When the waterproof pan P is used, the washing / drying machine 1 is installed on the waterproof pan P, so that the waterproof pan P becomes the installation surface G.

  FIG. 6 is a cross-sectional view taken along line AA of FIG. 1 showing the recovery of the water seal 10w of the drain trap 10 of the washing / drying machine 1 according to the first embodiment of the present invention.

  After the drying, as shown in FIG. 6, the rotational speed of the fan 61 is lowered to a pressure level that does not break the water seal 10w while keeping the pressure on the drain hose 9 side higher than the pressure on the drain hole 39 side. Then, the cooling water valve 19 is opened to flow a predetermined amount of cooling water, and the water seal 10w of the drain trap 10 is recovered. This completes the drying process.

As described above, after the drying process is completed, water is supplied to the drainage hole 39 through the drainage hose 9 while maintaining the pressure on the drainage hose 9 side at a predetermined level or more, thereby suppressing the backflow of odor from the drainage hole 39. The water seal 10w of the drain trap 10 can be recovered.
The drain trap 10 may be recovered either at the end of the drying operation (for exhaust of the drain hose 9) or after the end of the drying operation as long as the pressure on the drain hose 9 side is kept high.

FIG. 7 is a block diagram showing in detail the control device 138 that controls the washing / drying machine 1.
The control device 138 is connected to a commercial power source via a power switch 139, and a transformer (transformer) for transforming the voltage of the commercial power source to a necessary voltage such as the microcomputer 150, a fan 61, a heater 62, and various actuators. And the like are supplied to the drive circuit 154.
A microcomputer 150 provided in the control device 138 stores a control program compiled in an execution code, for example, in C language for controlling the operation of the washing / drying machine 1 in a ROM (Read Only Memory). The washing / drying machine 1 is controlled by executing the control program.

  The microcomputer 150 is connected to an operation button input circuit 151 of an interface circuit to which operation switches such as the operation button switch 113 and the start switch 112 are connected, and various sensors such as a water level sensor 134, a temperature sensor 152, and a vibration sensor 153. In addition, various information signals such as pressing operation of the buttons (113, 112) of the user using the washing / drying machine 1 and detection signals of various sensors (134, 152, 153) in the washing process and the drying process are input. .

The microcomputer 150 is connected to respective drive circuits 154 such as a water supply valve 116, a drain valve 8, a drum driving motor 36, a fan 61, a heater 62, an intake valve 13, a cooling water valve 19, and the like. An output signal from 150 is input to each drive circuit 154, and according to the output signal, each drive circuit 154 causes various actuators such as the drain valve 8, the drum drive motor 36, the fan 61, the heater 62, and the intake valve 13 to be output. Control such as opening and closing and rotation is performed.
The microcomputer 150 is connected to a display 114, a light emitting diode 156, a buzzer 157, and the like that are made up of a 7-segment light emitting diode for informing the user of the operating state of the washing machine. The display 114 and the light emitting diode 156 are displayed, and the buzzer sound is sounded by the buzzer 157.

FIG. 8 is a flowchart showing a basic control procedure for washing and drying.
The microcomputer 150 is activated when the power switch 139 is pressed and the power is turned on, and executes a basic control processing program relating to washing and drying as shown in FIG.

  When the power switch 139 (see FIG. 7) is turned on, first, the microcomputer 150 performs state confirmation and initial setting of the washing / drying machine 1 (step S101).

  Next, the display 114 of the operation panel 106 is turned on, and a washing / drying course is set according to an instruction input from the operation button switch 113 (step S102). When no instruction is input, the standard washing / drying course or the previously performed washing / drying course is automatically set. For example, when an instruction is input to the operation button switch 113a, a high temperature finishing course for the drying process is set.

  It is determined whether there is a start switch signal from the start switch 112 of the operation panel 106 (step S103). If there is no start switch signal (No in step S103), step S103 is repeated. If there is a start switch signal (Yes in step S103), the process proceeds to the next step (step S104).

  Next, washing is executed (step S104). Laundry is performed in the order of washing, intermediate dehydration, rinsing, and final dehydration. Since this is the same as a normal drum-type washing and drying machine, a detailed description thereof is omitted.

  Next, it is confirmed whether a washing / drying course is set (step S105). When the washing / drying course is not set (No in step S105), that is, when only the washing course is set, all the processes are ended.

  Next, the initial temperatures of the drain port 37 and the fan intake port at the bottom of the outer tub 20 are measured (step S106).

  And hot air dehydration is performed (step S107). In the hot air dehydration, the fan 61 is operated at a low speed, the heater 62 is energized, the hot air is blown into the rotary drum 29, and the temperature of the laundry 30 is increased. At the same time, the rotating drum 29 is rotated at a high speed to effectively dehydrate moisture from the warmed laundry 30 (the viscosity of the water decreases as the temperature rises so that the water can be efficiently dehydrated). In the present embodiment, the rotational speed of the fan 61 is set to about 11000 revolutions per minute, for example. This is to prevent the allowable current value (15 A) from being exceeded.

  Further, the fan 61 is rotated at a low speed, the heater 62 is energized, and the rotating drum 29 is rotated forward and backward (step S108), and hot warm air is blown onto the clothes while changing the position of the laundry 30 in the rotating drum 29. Execute dry operation. Then, the temperature of the entire clothes (laundry 30) rises and moisture evaporates from the laundry 30.

  Next, an intermediate temperature Tm1 between the drain port 37 and the fan intake port at the lower part of the outer tub 20 is measured (step S109).

  Next, it is determined whether the elapsed time from the start of drying has passed the specified time (step S110). If the specified time has not elapsed (No in step S110), the process proceeds to the next step S110. When the specified time has elapsed (Yes in step S110), the process proceeds to step S113 without executing steps S111 and S112.

  An intermediate temperature Tm2 between the drain port 37 and the fan intake port at the lower part of the outer tub 20 is measured (step S111).

  Next, it is determined whether intermediate temperature Tm2−intermediate temperature Tm1 <specified temperature Tk1 is satisfied (step S112). That is, it is confirmed whether or not the difference between the intermediate temperature Tm1 and the intermediate temperature Tm2 is smaller than the specified temperature Tk1. If the intermediate temperature Tm2−the intermediate temperature Tm1 <the specified temperature Tk1 does not hold, the processing from step S109 is repeated. If satisfied, the process proceeds to step S113.

  The cooling water valve 19 is opened (step S113). That is, when the specified time has elapsed from the start of drying, or when the difference between the intermediate temperature Tm1 and the intermediate temperature Tm2 is smaller than the specified temperature Tk1 (for example, less than 2 degrees in 5 minutes), constant rate drying in the drying process The cooling water valve 19 is opened to flow cooling water, and water-cooled dehumidification is performed.

  Next, an intermediate temperature Tm3 between the drainage port 37 and the fan intake port at the lower part of the outer tub 20 is measured (step S114).

  Next, it is determined whether the elapsed time from the start of drying has passed the specified time (step S115). When the specified time has elapsed (Yes in step S115), step S116 is not executed and the process proceeds to step S117. If the specified time has not elapsed (No in step S115), the process proceeds to the next step S116.

  It is determined whether intermediate temperature Tm3−initial temperature Tp> specified temperature Tk2 holds (step S116). That is, it is confirmed whether or not the difference between the intermediate temperature Tm3 and the initial temperature Tp exceeds the specified temperature Tk2. If intermediate temperature Tm3−initial temperature Tp> specified temperature Tk2 does not hold (No in step S116), the processes in and after step S114 are repeated. If yes, the process proceeds to the next step S117.

  The heater 62 is turned off, the intake valve 13 is opened, the cooling water valve 19 is closed, and the fan 61 is rotated at a high speed (step S117). That is, when the specified time has elapsed from the start of drying, or when the difference between the intermediate temperature Tm3 and the initial temperature Tp is greater than the specified temperature Tk2, the dryness of the laundry 30 (= the mass of the dry cloth / the mass of the compress) Is 0.90 to 0.95, the heater 62 is turned off, the intake valve 13 is opened, the cooling water valve 19 is closed, the fan 61 is rotated at a high speed, and the water in the laundry 30 is drained from the drainage hose 9. To the drain hole 39.

  Then, the end temperatures of the drain port 37 and the fan intake port at the lower part of the outer tub 20 are measured (step S118).

  It is determined whether the elapsed time from the start of exhausting has passed the specified time (step S119). When the specified time has elapsed (Yes in step S119), the process proceeds to step S121 without executing the next step S120. If the specified time has not elapsed (No in step S119), the process proceeds to the next step S120.

  It is determined whether intermediate temperature Tm3−end temperature Te> specified temperature Tk3 is satisfied (step S120). That is, it is confirmed whether or not the difference between the intermediate temperature Tm3 and the end temperature Te exceeds the specified temperature Tk3. If intermediate temperature Tm3−end temperature Te> specified temperature Tk3 does not hold (No in step S120), the processes in and after step S118 are repeated. If satisfied (Yes in step S120), the process proceeds to the next step S121.

  The fan 61 is slowed down and the cooling water valve 19 is opened (step S121). That is, when the specified time has elapsed from the start of exhaust, or when the difference between the intermediate temperature Tm3 and the end temperature Te is greater than the specified temperature Tk3, the dryness of the laundry 30 (= mass of dry cloth / mass of compress) Is determined to be 1.0 or more, and the drying is finished. The cooling water is reduced by reducing the rotation speed of the fan 61 to a pressure level that does not break the water seal 10w while keeping the pressure on the drain hose 9 higher than the pressure on the drain hole 39 side. The valve 19 is opened to flow cooling water, and the water seal 10w of the drain trap 10 is recovered.

  It is determined whether or not the elapsed time since opening the cooling water valve 19 has passed the specified time (step S122). If the specified time has elapsed (Yes in step S122), the process proceeds to step S123 without executing the next step S123. If the specified time has not elapsed (No in step S122), the process proceeds to the next step S123.

  It is determined whether or not the detected value of the water level sensor 134> the specified pressure is satisfied (step S123). That is, it is confirmed whether or not the detected pressure of the water level sensor 134 exceeds the specified pressure. If the detected value of the water level sensor 134> the specified pressure does not hold (No in step S123), the processes in and after step S122 are repeated. If satisfied (Yes in step S123), the process proceeds to the next step S124.

  The fan 61 is stopped, the drum driving motor 36 is stopped, the intake valve 13 is closed, the cooling water valve 19 is closed (step S124), and the process is terminated. That is, when the specified time has elapsed since the cooling water valve 19 was opened, or when the pressure of the water level sensor 134 is greater than the specified pressure, it is determined that the water seal 10w of the drain trap 10 has recovered, and the fan 61 , The drum driving motor 36 is stopped, the intake valve 13 is closed, the cooling water valve 19 is closed, and the drying process is completed.

FIG. 9 is a graph showing a temperature change of the laundry 30 in the drying process.
At the start of the drying process, the heater 62 is ON.
In the first half (early stage) of the drying process, the air heated by the heater 62 is blown to preheat the laundry 30 and the temperature of the laundry 30 rises rapidly.
In the middle of the washing process, the temperature of the laundry 30 rises slowly as the laundry 30 is dehumidified (that is, remains almost constant), and the laundry 30 is dried at a constant rate. The water evaporated inside is condensed by water-cooled dehumidification and discharged outside the machine.
In the latter half (end stage) of the washing process, the heater 62 is turned off, and the dried outside air is blown onto the laundry 30 to reduce the rate of drying, so that the laundry 30 is sufficiently dried and its temperature is lowered.

  The washing / drying machine 1 configured as described above performs the water-cooled dehumidification from the middle stage of the drying process (see FIGS. 4A and 9), so that the temperature of the circulating air is compared with the case of performing the water-cooled dehumidification from the start of drying. As the temperature rises and the temperature of the laundry 30 rises, the heat capacity used at the time of residual heat drying increases and the amount of evaporation from the clothing increases, so that the drying efficiency increases and the drying time, the amount of water used and the power consumption are reduced. be able to.

  In addition, when the cooling water valve 19 is opened only in the latter half of the middle stage of the drying process as shown in FIG. 4B, or when cooling water is not used in the drying process as shown in FIG. 4C, the temperature of the circulating air This further increases the temperature of the garment during constant rate drying and the amount of evaporation from the garment further increases. Therefore, the drying efficiency is further increased, and the drying time, the amount of water used and the power consumption can be reduced. However, when considering shrinkage due to an increase in clothing temperature, it is necessary to adjust the heating amount of the heater 62, the start time and time of water-cooled dehumidification, and the flow rate of the cooling water.

  In addition, you may comprise the washing-drying machine 1 so that air cooling dehumidification can also be performed instead of performing water cooling dehumidification at the time of a drying process. That is, the washing / drying machine 1 includes a water-cooled dehumidification stop setting unit (not shown), and performs either water-cooled dehumidification or air-cooled dehumidification based on the setting of the water-cooled dehumidification stop setting unit. According to this configuration, at the time of air-cooling dehumidification, the dehumidification duct 5 and the outer tub 20 are air-cooled, and the inner wall surface serves as a dehumidifying portion.

Here, when the clothes are 6 kg, the heater input is about 600 W, the air volume is about 1.5 m ³ / min, the amount of cooling water used at constant rate drying is 0.3 to 0.5 L / min and the case where it is not used is compared. By not using cooling water, the temperature of the circulating air rises by about 20 degrees, and about 7 to 10% of the total power consumption of the drying process can be reduced.

  In addition, the heat accumulated in the laundry 30, the rotating drum 29, the outer tub 20, the upper surface of the outer tub 20, the air inside the housing stored in the space of the outer frame 2, and the dry external air are stored by the middle of the drying process. Due to the residual heat drying used, the power consumption of the heater 62 in the latter half of the drying process can be reduced.

Here, under the conditions of 6 kg of clothing, heater input of about 600 W, air volume of about 1.5 m ³ / min, and cooling water volume of 0.3 to 0.5 L / min, the heater 62 is turned off in the latter half of the drying and external air is blown. When preheat drying is performed, about 10 to 20% of the total power consumption of the drying process can be reduced as compared with the case where preheat drying is not performed.

  Further, when the air inside the housing sucked into the fan 61 is warmed by exhaust heat from the outer tub 20, the drum driving motor 36, the fan 61, etc., the drying process is performed in comparison with the case where the external air is directly sucked. About 5% of the total power consumption can be reduced.

  Moreover, even if external air is inhaled, since the water | moisture content of the laundry 30 is discharged | emitted from the drainage hose 9 to the drainage hole 39, power consumption can be reduced without deteriorating the indoor environment. Furthermore, since the water seal 10w of the drain trap 10 is recovered while the internal pressure on the drain hose 9 side is maintained at the end of drying, the odor from the drain hole 39 is prevented from leaking into the room and deteriorating the indoor environment.

  4 (a), 4 (b), and 4 (c) in the first embodiment according to the present invention, the intake valve 13 is opened at the beginning of the latter half of the drying process to drain the moisture from the laundry 30 to the drain hose 9. As shown in FIG. 4D, moisture from the laundry 30 is drained from the drain hose 9 so that the temperature of the laundry 30 is not lowered by opening the intake valve once or several times in the middle of the drying process. In the case of discharging, the saturated water vapor is discharged into the outer tub 20 and the water discharged in the latter half of the drying process is reduced, so that the power consumption in the drying process can be further reduced.

<Second Embodiment>
FIG. 10 is a cross-sectional view showing the washing / drying machine 1B in the latter half of the drying process according to the second embodiment of the present invention. The description which overlaps about the structure which is common in 1st Embodiment is abbreviate | omitted.

  The difference from the washing and drying machine 1 of the first embodiment is that an overflow pipe 17 for discharging abnormal water is provided on the door 3 side of the outer tub 20, and the drainage hose 9 is thickened to drain moisture from the laundry 30. It is also discharged from the overflow pipe 17 at the same time as the opening 37. As a result, the ventilation resistance on the discharge side decreases and the exhaust air volume increases, thereby shortening the exhaust time and further reducing the power consumption of the drying process.

<Third Embodiment>
FIG. 11 is a cross-sectional view showing a washing / drying machine 1C in the latter half of the drying process according to the third embodiment of the present invention. The description which overlaps about the structure which is common in 1st Embodiment and 2nd Embodiment is abbreviate | omitted.

  The difference from the washing / drying machine 1B of the second embodiment is that the suction port of the intake valve 13 provided on the upstream side of the fan 61 is directed to the outer frame 2 side. As a result, the air heated by the exhaust heat from the outer tub 20, the drum driving motor 36, the fan 61, etc. and accumulated in the uppermost part of the outer frame 2 can be sucked in efficiently. Further reduction can be achieved.

It is an external appearance perspective view which shows the washing-drying machine of 1st Embodiment by this invention. It is an AA line principal part sectional view of Drawing 1 showing the usual drying process of the washing dryer of a 1st embodiment by the present invention. It is an AA principal part sectional view of Drawing 1 showing the residual heat drying of the latter half of the drying process which performs outside air intake of the washing dryer of a 1st embodiment by the present invention, and drainage hose exhaust. It is a figure which shows the driving | running state of the heater in the drying process of 1st Embodiment by this invention, a cooling water valve, and an intake valve. It is a longitudinal cross-sectional view which shows the connection structure of the drainage hose and drainage trap which concern on 1st Embodiment by this invention. FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 showing recovery of water sealing of the drain trap of the washing and drying machine of the first embodiment according to the present invention. It is a block diagram which shows in detail the control apparatus which controls a washing-drying machine. It is a flowchart which shows the basic control procedure of washing and drying. It is a graph which shows the temperature change of the laundry in a drying process. It is sectional drawing which shows the washing-drying machine of the second half of the drying process of 2nd Embodiment by this invention. It is sectional drawing which shows the washing-drying machine of 3rd Embodiment by this invention after the drying process.

Explanation of symbols

1 Washing dryer (first embodiment)
1B Washer / Dryer (Second Embodiment)
1C Washer / Dryer (Third Embodiment)
DESCRIPTION OF SYMBOLS 2 Outer frame 3 Door 3b Door open button 4,7 Bellows 5 Dehumidification duct 6 Drying device 8 Drain valve 9 Drain hose 10 Drain trap 11 Blowing nozzle 13 Intake valve 13a Inlet 16 Feed water valve 17 Overflow pipe 19 Cooling water valve 20 Outer tank 20o Back plate 20s Circumferential side plate 21 Suspension 22 Front cover 23 Back cover 29 Rotating drum 30 Laundry 31 Fluid balancer 32 Ventilation port 33 Lifter 34 Metal drum flange for rotating drum 35 Main shaft 36 Drum drive motor 37 Drain port 38 Packing 39 Drain Hole 39a Sealing material 39b Adapter 39c Lid 61 Fan 62 Heater 106 Operation panel 112 Start switch 113, 113a Operation button switch 114 Indicator 134 Water level sensor 138 Controller 139 Power switch 150 Lee Black computer 151 operation buttons input circuit 152 temperature sensor 153 vibration sensor 154 driving circuit 156 light emitting diodes 157 buzzer B base G installation surface P waterproof pan

Claims (10)

An outer tub whose inside becomes a drying chamber during the drying step, a rotary drum or an inner tub that is rotatably arranged in the outer tub, and that houses laundry; a motor that drives the rotary drum or the inner tub; A casing supporting the rotating drum or the inner tub, a drying device having a blowing path for supplying warm air to the rotating drum or the inner tub, a heating means, a blowing means and a dehumidifying unit, and discharging from the outer tub A washer-dryer comprising a drainage hose for draining the generated water,
During the drying process, air circulates in the order of the air blowing means, the heating means, the outer tub, the dehumidifying part, and the air blowing means, and during the drying operation, the heating means is stopped and water-cooled dehumidification in the dehumidifying part. And exhausting all or part of the air discharged from the rotating drum or the inner tank via the drainage hose,
A washing and drying machine that performs water-cooling dehumidification of the air from the middle of the drying process until the exhaust of the air circulated from the rotating drum or the inner tank is started. An outer tub whose inside becomes a drying chamber during the drying step, a rotary drum or an inner tub that is rotatably arranged in the outer tub, and that houses laundry; a motor that drives the rotary drum or the inner tub; A casing supporting the rotating drum or the inner tub, a drying device having a blowing path for supplying warm air to the rotating drum or the inner tub, a heating means, a blowing means and a dehumidifying unit, and discharging from the outer tub A washer-dryer comprising a drainage hose for draining the generated water,
During the drying process, air circulates in the order of the air blowing means, the heating means, the outer tub, the dehumidifying part, and the air blowing means, and during the drying process, the heating means is stopped and water cooling in the dehumidifying part is performed. Dehumidification is stopped and all or part of the air discharged from the rotating drum or the inner tank is exhausted through the drain hose while keeping the pressure in the drain hose at a predetermined level or more.
A washing and drying machine that performs water-cooling dehumidification of the air from the middle of the drying process until the exhaust of the air circulated from the rotating drum or the inner tank is started. An outer tub whose inside becomes a drying chamber during the drying step, a rotary drum or an inner tub that is rotatably arranged in the outer tub, and that houses laundry; a motor that drives the rotary drum or the inner tub; A casing supporting the rotating drum or the inner tub, a drying device having a blowing path for supplying warm air to the rotating drum or the inner tub, a heating means, a blowing means and a dehumidifying unit, and discharging from the outer tub A washer-dryer comprising a drainage hose for draining the generated water,
During the drying process, air circulates in the order of the air blowing means, the heating means, the outer tub, the dehumidifying part, and the air blowing means, and during the drying process, the heating means is stopped and water cooling in the dehumidifying part is performed. Dehumidification is stopped , outside air in the space with the housing is sucked into the air passage from the upper surface of the outer tank, and all or part of the air that has come out of the rotating drum or the inner tank passes through the drain hose. Exhaust,
A washing and drying machine that performs water-cooling dehumidification of the air from the middle of the drying process until the exhaust of the air circulated from the rotating drum or the inner tank is started. An outer tub whose inside becomes a drying chamber during the drying step, a rotary drum or an inner tub that is rotatably arranged in the outer tub, and that houses laundry; a motor that drives the rotary drum or the inner tub; A housing that supports the rotating drum or the inner tub, a drying device that blows warm air to the rotating drum or the inner tub, a heating device, a blowing device, and a dehumidifying unit, and the laundry. A washing and drying machine comprising a drainage hose for discharging water,
During the drying process, air circulates in the order of the air blowing means, the heating means, the outer tub, the dehumidifying part, and the air blowing means , and during the drying process, the heating means is stopped and water cooling in the dehumidifying part is performed. Stops dehumidification and exhausts all or part of the air from the rotating drum or the inner tank to the drain outlet from the drain hose,
A washing and drying machine that performs water-cooling dehumidification of the air from the middle of the drying process until the exhaust of the air circulated from the rotating drum or the inner tank is started. An outer tub whose inside becomes a drying chamber during the drying step, a rotary drum or an inner tub that is rotatably arranged in the outer tub, and that houses laundry; a motor that drives the rotary drum or the inner tub; A housing that supports the rotating drum or the inner tub, a drying device that blows warm air to the rotating drum or the inner tub, a heating device, a blowing device, and a dehumidifying unit, and the laundry. A washing and drying machine comprising a drainage hose for discharging water,
During the drying step, air circulates in the order of the blowing unit, the heating unit, the outer tub, the dehumidifying unit, and the blowing unit, and stops the heating unit during a part of the drying step. Water cooling and dehumidification in the dehumidifying part is stopped , outside air in the space with the housing is sucked into the air passage from the upper surface of the outer tub, and all or a part of the air discharged from the rotating drum or the inner tub is drained. Exhaust from the hose to the drain,
A washing and drying machine that performs water-cooling dehumidification of the air from the middle of the drying process until the discharge of the air circulated from the rotating drum or the inner tank is started. An outer tank serving as a drying chamber, a rotating drum or an inner tank that is rotatably disposed in the outer tank, and stores clothes, a motor that drives the rotating drum or the inner tank, the rotating drum or the A casing that supports an inner tub, a drying passage for sending warm air to the rotating drum or the inner tub, a heating device, a blowing device and a dehumidifying unit, and water discharged from the outer tub A dryer equipped with a drainage hose for discharging,
During the drying process, air circulates in the order of the blowing unit, the heating unit, the outer tub, the dehumidifying unit, and the blowing unit, and during the drying step, the heating unit is stopped and the water-cooled dehumidification in the dehumidifying unit is performed. And exhausting all or part of the air exhausted from the rotating drum or the inner tank via the drainage hose,
The dryer performs water-cooling dehumidification of the air from the middle stage of the drying process until the exhaust of the air circulating from the rotating drum or the inner tank is started.   The water-cooled dehumidification is performed from the first half or middle stage of constant rate drying in the drying process until the exhaust of the air circulated from the rotary drum or the inner tank is started. Item 6. The washing dryer according to any one of Items 5 to 6.   The water-cooled dehumidification is performed from the first half or middle stage of constant rate drying in the drying process until the exhaust of the air circulated from the rotary drum or the inner tank is started. Dryer.   The washing / drying machine according to any one of claims 1 to 5, further comprising water cooling / dehumidification stop setting means for stopping the water cooling / dehumidification.   The dryer according to claim 6, further comprising water cooling / dehumidification stop setting means for stopping the water cooling / dehumidification.

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