JP4917353B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a washing and drying machine that can be used from washing to drying.

  Many washing and drying machines that can be dried are water-cooled as a dehumidifying means for drying.

  In this device, the air in the tub that has been washed and dehydrated and accommodates the laundry is circulated through the dehumidifying means, and at the same time, the air passed through the dehumidifying means is heated by the heater to be warmed and dehumidified. The dehumidifier supplies water for dehumidification to remove moisture from the laundry in the inner tub and dehumidifies the warm air from the inner tub with a water cooling method. It has the advantage of good dehumidification.

  This type of washing / drying machine is described in, for example, JP-A-2002-35492 (Patent Document 1).

JP 2002-35492 A

  Since the conventional washing and drying machine including the above-mentioned Patent Document 1 has separately provided a tap water supply solenoid valve for supplying priming water to a bath water pump and a tap water supply solenoid valve for supplying wash water, There were many complicated configurations.

  In view of the above problems, an object of the present invention is to provide a washing and drying machine having a small number of parts and a simple configuration.

  The present invention includes an inner tub for washing, dehydrating and drying laundry, an outer tub in which the inner tub is placed and storing washing water, a blowing means for blowing drying air for drying the laundry, In a washing and drying machine having a heating means for heating drying air, a dehumidifying means for dehumidifying and removing moisture contained in the drying air, and a bath water pump for sucking up bath water, the pump included in the bath water pump A casing in which the planner and the pump runner are placed, a discharge port communicating with the casing, a washing water supply passage through which washing water to be supplied to the outer tub is circulated, and washing water is supplied to the washing water supply passage, and the bath A first water supply electromagnetic valve for supplying priming water to the water pump, a cooling water supply passage through which the cooling water of the dehumidifying means supplied from the bath water pump flows, the first water supply electromagnetic valve and the bath Water Or refusing communication between the flop, and having a switching valve or to cancel.

  According to the present invention, it is possible to provide a washing / drying machine having a small number of parts and a simple configuration.

  Embodiments of the present invention will be described with reference to the drawings.

  First, the outline of the washing / drying machine will be described with reference to FIG.

  The outer frame 1 of the washing / drying machine has an outer tub 2 in which washing water is placed. The outer tub 2 is supported by the outer frame 1 in a vibration-proof manner. A laundry dewatering tub (inner tub) 3 for storing laundry to be washed or dried is rotatably supported in the outer tub 2.

  The stirring blade 4 for stirring and washing the laundry is rotatably installed in the inner tub 3. During the washing operation and the drying operation, the agitating blade 4 is rotated forward / reversely. During the dehydration operation, the stirring blade 4 rotates at a high speed together with the inner tub 3, and the water contained in the laundry in the inner tub 3 is dehydrated.

  The washing and drying drive motor 10 drives the stirring blade 4 and the inner tub 3 to rotate. The washing / drying drive motor 10 uses a DC brushless motor.

  The outer lid 5 is provided on the top cover 6 provided at the upper part of the outer frame 1 so as to be freely opened and closed. The outer lid 5 is opened to allow laundry to be taken in and out of the inner tub 3.

  The top cover 6 has a water supply box 7 on the front side. The water supply box 7 supplies tap water, bath water, detergent, softener and the like to the outer tub 2. The outlet of the water supply box 7 is directed between the outer tub 2 and the inner tub 3.

  A water supply switching unit (not shown) is provided at the rear portion of the top cover 6. A water supply hose connection port 8 that communicates with the water supply switching unit and is connected to a water supply hose is provided so as to protrude from the top of the top cover 6. A bath water pump (not shown) for sucking bath water is also installed in the rear portion of the top cover 6.

  The drying mechanism 9 performs circulation ventilation and dehumidification of drying air for drying the laundry in the inner tub 3.

  Most of the drying mechanism 9 is occupied by a drying air circulation path.

  The drying air circulation path includes a bottom circulation path 20 connected to communicate with the bottom of the outer tub 2, a dehumidification circulation path 21 that rises from the bottom circulation path 20, a descending circulation path 22 that descends from the dehumidification circulation path 21, and a descending circulation path. Ascending circulation path 23 that rises again from 22, return circulation path 24 that lies sideways from ascending circulation path 23, and return connection circulation path 25 that is connected so as to communicate from return circulation path 24 to the upper part of outer tank 2.

  The bottom circulation path 20 has a bellows hose 26. The return connection circuit 25 also has a bellows hose 27. The dehumidifying circuit 21 has a water-cooled dehumidifying member 28 (dehumidifying means). The water-cooled dehumidifying member 28 exists so as to extend vertically in the dehumidifying circuit 21.

  The drying air rising in the dehumidification circuit 21 is cooled by bath water or tap water supplied to the water-cooled dehumidifying member 28, and moisture contained in the drying air is taken away.

  The circulation fan 29 (air blowing means) is provided in the lower part to which the descending circulation path 22 and the ascending circulation path 23 are connected. By the ventilation of the circulation fan 29, the drying air circulates in the inner tub 3 through the drying air circulation path, and the laundry in the inner tub 3 is dried.

  The heater 40 (heating means) is provided in the return circuit 24. Since the drying air from which moisture has been removed by the water-cooled dehumidifying member 28 is reheated by the heater 40 and flows through the inner tub 3, the moisture in the laundry is removed. By repeating this moisture removal with circulation of drying air, the laundry is dried well.

  The bottom of the bottom circulation path 20 communicates with the washing water drainage path 42 and the washing water circulation water path 43 through the lower communication pipe 41. A drainage valve 44 is provided in the washing water drainage channel 42. The drain valve 44 is closed during the washing operation and the drying operation. At the time of draining to drain the washing water or during the drying operation, the drain valve 44 is opened to drain the outside of the washing dryer.

  The washing water circulation water vertical water channel 46 extends to the upper side of the inner tub 3 and is connected to the washing water circulation water channel 43 via a circulation pump 45.

  Washing water and rinsing water collected in the outer tub 2 are sucked up by the circulation pump 45 and poured into the inner tub 3 from the upper discharge port of the washing water circulation water longitudinal water channel 46. Since washing and rinsing are performed under the continuous water injection by the circulation pump 45, washing is performed with a small amount of water.

  The water level sensor 47 detects the water level of washing water and rinsing water accumulated in the outer tub 2.

  An air trap 48 communicating with the side portion of the bottom circulation path 20 is provided, and the air trap 48 and the water level sensor 47 are connected so as to communicate with each other through an air tube 49. The water level sensor 47 senses the water level fluctuation in the outer tub 2 and the water level is detected.

  Next, washing water and cooling water, which are the main parts of the present invention, will be described including related points.

  First, the water supply switching unit 60 and the bath water pump 500 will be described with reference to FIGS.

  In FIG. 2 to FIG. 3, the water supply switching unit 60 and the bath water pump 500 are depicted as one unit, but they are separate units.

  The water supply switching unit 60 and the bath water pump 500 are individually attached to the top cover 6 of the washing and drying machine described above.

  However, a single unit is also possible. In this case, the water supply switching unit 60 and the bath water pump 500 are combined into one before being incorporated into the top cover 6.

  Now, the water supply switching unit 60 has a water supply electromagnetic valve (water supply valve) 61, a water supply switching device 62, and a water supply switching unit support base 63, as shown in FIGS.

  As shown in FIGS. 4 to 7, the water supply electromagnetic valve (water supply valve) 61 includes a first tap water supply electromagnetic valve 61a, a second tap water supply electromagnetic valve 61b, a detergent dissolving water supply electromagnetic valve 61c, and a softener. A water supply electromagnetic valve 61d is provided.

  These four water supply solenoid valves are united and have the water hose connection port 8 described above. The water hose connection port 8 is branched into four water supply solenoid valves. Each of the water supply solenoid valves is provided with a discharge port 611a (for first tap water), 611b (for second tap water), 611c (for detergent dissolution), and 611d (for softener).

  Each water supply electromagnetic valve is provided with connectors 612a, 612b, 612c, 612d to which electricity is supplied.

  As shown in FIGS. 5 to 9, the supply water switching device 62 includes a cover 64 that avoids water and dust.

  The supply water switching device 62 includes a frame 65, a drive motor 67, a cam mechanism 68, an operation rod 69, an operation rod support base 80, and a valve body 81 provided at the tip of the operation rod 69. The valve body 81 is paired with a later-described valve seat to constitute a switching valve.

  The operation rod support base 80 includes a pressing biasing spring 82 that presses the valve body 81 forward, and a rubber bellows 83 that prevents water from entering the support base 80.

  The frame 65 has support bosses 84 and 85.

  The drive of the drive motor 67 causes the cam mechanism 68 to reciprocate the operation rod 69 back and forth. The switching valve is switched (opened and closed) by the reciprocating operation of the operation rod 69.

  As shown in FIGS. 6 to 12, the water supply switching unit support base 63 includes a support base piece 86 corresponding to the water supply electromagnetic valve 61 and a support base piece 87 corresponding to the water supply switching device. The water supply switching unit support base 63 is made by tying both support base pieces. The joint surfaces of both support base pieces are sealed.

  As shown in FIG. 12, the support base piece 86 is provided with three fitting holes into which the discharge port of the water supply electromagnetic valve 61 is fitted. There are three fitting holes 613a for the first tap water, fitting holes 613b for the second tap water, and fitting holes 613d for the softener.

  The water supply electromagnetic valve 61 is attached to the support base piece 86 of the water supply switching unit support base 63. The first tap water fitting hole 613a, the second tap water fitting hole 613b, and the softener fitting hole 613d are connected to the outlets 611a (first tap water), 611b (second tap water), 611c ( For detergent dissolution, 611d (for softener) are fitted and connected.

  The support base piece 86 has a bath water inflow connection port 88, a bath cooling water outflow connection port 89, a wash water outflow connection port 100, and a cooling water outflow connection port 101.

  As shown in FIG. 11, the support base piece 87 is provided with a recessed valve seat 102 to which the valve body 81 of the supply water switching device 62 is attached and detached. The valve seat 102 is paired with the valve body 81 described above to constitute a switching valve.

  The support base piece 87 has receiving bosses 103 and 104. The support bosses 84 and 85 of the frame 65 described above are abutted against the receiving bosses 103 and 104, and are fastened to the support base piece 87 with screws from the frame 65 side. Thereby, the supply water switching device 62 is attached and fixed to the water supply switching unit support base 63.

  The operation rod support base 80 of the supply water switching device 62 has three screw-through bosses 105 on the periphery. The water supply switching unit support base 63 has three screw holes 106 on the outer periphery of the valve seat 102. The operation rod support base 80 is fastened to the support base piece 87 by screwing the screw 107 inserted into the screw-through boss 105 into the screw hole 106.

  Since the outer peripheral side of the bellows 83 described above is sandwiched between the operation rod support base 80 and the support base piece 87, the outer periphery of the valve seat 102 is well sealed.

  A valve body 81 is attached to and detached from the valve seat 102. This desorption is performed by reciprocating back and forth the operating rod 69 provided in the supply water switching device 62. By the reciprocating operation of the operation rod 69, the switching valve constituted by the valve seat 102 and the valve body 81 as a pair is switched.

  Since the supply water switching device 62 and the water supply electromagnetic valve 61 are combined as one water supply switching unit in this way, the work for incorporation into the top cover 6 of the washing / drying machine can be easily performed. The top cover 6 is particularly easy to incorporate by uniting because various parts are placed and the space is narrow.

  The water supply switching unit is easy to unitize as compared with a unit in which the water supply switching device 62 and the water supply electromagnetic valve 61 that are unitized by being attached to the water supply switching unit support base 63 are unitized.

  In addition, since the water supply switching device 62 and the water supply electromagnetic valve 61 are arranged on both surfaces so as to sandwich the water supply switching unit support base 63, there is no contact between components compared to the components arranged next to each other on the same surface. Is easy.

  As shown in FIG. 11, the valve seat 102 has a central communication hole 108 in the center and an outer peripheral communication hole 109 on the outer peripheral side. The center communication hole 108 and the outer periphery communication hole 109 will be further described later.

  The support base piece 87 has a washing water outflow connection port 120, a bath cooling water inflow connection port 121, and a softener tap water outflow connection port 122.

  As shown in FIG. 13, the water supply switching unit support base 63 has a plurality of water channel chambers partitioned by a partition wall. The first water channel chamber 123, the second water channel chamber 124, the bath water channel chamber 130, and the sofner channel chamber 125 are partitioned in the water supply switching unit support base 63.

  The softener channel chamber 125 is provided with a fitting hole 613d for softener and a tap water outflow connection port 122 for softener. The softener fitting hole 613d and the softener tap water outflow connection port 122 communicate with each other via the softener channel chamber 125.

  The drainage communication small hole 126 is provided in the partition wall of the sofner water channel chamber 125 and the second water channel chamber 124. Since the water supply switching unit support base 63 is placed so that the sofner water channel chamber 125 is positioned on the second water channel chamber 124, the water in the sofner water channel chamber 125 does not remain through the drainage communication small hole 126 and the second water channel chamber 124. To leak.

  In the second water channel chamber 124, a fitting hole 613b for second tap water, an outflow connection port 101 for cooling water, and an inflow connection port 121 for bath cooling water are arranged. The fitting hole 613 b for the second tap water, the cooling water outflow connection port 101, and the bath cooling water inflow connection port 121 communicate with each other via the second water channel chamber 124.

  In the bath water channel chamber 130, a bath water inflow connection port 88, a bath cooling water outflow connection port 89, and a central communication hole 108 of the valve seat 102 are arranged. The bath water inflow connection port 88 and the bath cooling water outflow connection port 89 communicate with each other through the bath water channel chamber 130. Further, the inside of the valve seat 102 and the bath water channel chamber 130 communicate with each other through the central communication hole 108.

  In the first water channel chamber 123, a first tap water fitting hole 613a, a washing water outflow connection port 100, a washing water outflow connection port 120, and an outer peripheral communication hole 109 of the valve seat 102 are arranged. The first tap water fitting hole 613 a, the washing water outflow connection port 100, and the washing water outflow connection port 120 communicate with each other through the first water channel chamber 123. Further, the inside of the valve seat 102 and the first water channel chamber 123 communicate with each other through the outer peripheral communication hole 109.

  As described above, the valve body 81 of the supply water switching device 62 is attached to and detached from the valve seat 102. When the valve body 81 is seated on the valve seat 102, the communication between the central communication hole 108 and the outer peripheral communication hole 109 is disconnected from the inside of the valve seat 102 (becomes non-communication).

  Conversely, when the valve body 81 is separated from the valve seat 102, the first water channel chamber 123 and the bath water channel chamber 130 communicate with each other through the center communication hole 108, the outer periphery communication hole 109, and the inside of the valve seat 102. The switching valve formed by the valve body 81 and the valve seat 102 is switched by communication between the central communication hole 108 and the outer peripheral communication hole 109 and non-communication.

  By switching the switching valve by the switching operation of the supply water switching device 62 (attachment / detachment of the valve body 81 to the valve seat 102), the communication between the first water channel chamber 123 and the bath water channel chamber 130 is cut off or communicated. .

  2 to 3 and 10, the bath water pump 500 includes a motor case 502 in which a drive motor 501 is installed, a pump casing 504 in which a pump runner 503 is installed, a pump runner 503, and a drive motor 501. It has a shaft coupling 505 provided therebetween.

  Furthermore, the bath water pump 500 is provided on the way from the outside to the mechanical seal 506 that surrounds the shaft coupling 505, the water suction hose connection port 507 to which the bath water suction hose is connected, and the water suction hose connection port 507 to the suction port of the pump runner 503. A check valve 508 and a steam / water separation chamber 509.

  In addition, a discharge port 510 having a large diameter for discharging the sucked bath water from the pump casing 504 and a discharge port 511 having a smaller diameter than the large discharge port 510 for discharging the air in the pump casing 504 are provided. The small discharge port 511 discharges the sucked bath water when the air in the pump casing 504 is removed.

  The pump casing 504, the steam / water separation chamber 509, the large discharge port 510, and the small discharge port 511 are in communication. The large discharge port 510 and the small discharge port 511 are provided in the upper part of the steam-water separation chamber 509 or at a position higher than that.

  The connection of various communication pipes will be described with reference to FIGS.

  One end of a bath water discharge pipe 520 is connected to the large discharge port 510 of the bath water pump 500. The other end of the bath water discharge pipe 520 is connected to the bath water inflow connection port 88 of the water supply switching unit support base 63.

  One end of the first bath cooling water feed pipe 521 included in the cooling water supply path is connected to the bath cooling water outflow connection port 89 of the water supply switching unit support base 63. The other end of the first bath cooling water feed pipe 521 is connected to the first inflow end side of the T-shaped joint pipe 522.

  One end of the second bath cooling water feed pipe 523 is connected to the small discharge port 511 of the bath water pump 500. The other end of the second bath cooling water feed pipe 523 is connected to the second inflow end side of the T-shaped joint pipe 522.

  One end of the third bath cooling water feed pipe 524 is connected to the outflow end side of the T-shaped joint pipe 522. The other end of the third bath cooling water feed pipe 524 is connected to the bath cooling water inflow connection port 121 of the water supply switching unit support base 63.

  One end of the washing water injection pipe 525 included in the washing water supply path is connected to the washing water outflow connection port 120, and the washing water and the rinsing water are injected into the outer tub 2 from the other end side.

  One end of the cleaning water injection pipe 526 included in the cleaning water supply passage is connected to the cleaning water outflow connection port 100, and water is injected into the water-cooled dehumidifying member 28 from the other end side. The lint etc. adhering to the water-cooled dehumidifying member 28 are washed by the washing water injection.

  One end of the cooling water injection pipe 527 is connected to the cooling water outflow connection port 101, and the dehumidifying cooling water is poured into the water cooling / dehumidifying member 28 from the other end side.

  One end of the softener injection pipe 528 is connected to the softener tap water outflow connection port 122, and the other end is poured into a softener supply section such as the water supply box 7.

  One end of the detergent dissolution water injection pipe 529 is connected to a discharge port 611c (for detergent dissolution) of a water supply electromagnetic valve, and water is injected from the other end side to a detergent dissolution portion such as the water supply box 7.

  It is safe to connect the various pipes described above before connecting the water supply switching unit to the top cover 6 of the washing / drying machine. It is better that the number of connecting operations in the top cover 6 in which various parts are placed and the space is small is as small as possible.

  As described above, the water supply switching unit support base 63 of the water supply switching unit is a support base for the water supply electromagnetic valve (water supply valve) 61 and the water supply switching device 62. In addition, the water supply switching unit support base 63 itself is provided with various water channel chambers, and is connected to the plurality of water supply electromagnetic valves (water supply valves) 61, the bath water pump 500, various water injection locations, and various pipes.

  If various water channel chambers are not provided in the water supply switching unit support base 63 and the water supply electromagnetic valve (water supply valve) 61, the bath water pump 500, and various water injection points are connected and connected only by piping, the piping becomes extremely complicated. Piping connection work in the top cover 6 where the space is narrow is extremely difficult work.

  By providing various water channel chambers in the water supply switching unit support base 63 itself, the above problems can be solved at once.

  Further, by providing the water supply switching unit support base 63 with the valve seat 102 of the supply water switching device 62, the number of components can be reduced. In addition to this, there is a good point that piping required when the valve seat is not provided on the water supply switching unit support base 63 becomes unnecessary.

  The relationship and relationship between the first water channel chamber 123 and the bath water channel chamber 130 will be further described with reference to FIG.

  14 shows a first water channel chamber 123, a bath water channel chamber 130, a water supply electromagnetic valve (water supply valve) 61, a switching valve of a supply water switching device 62, a bath water pump 500, and a T-shaped joint. It is the figure which showed the relationship with the pipe | tube 522 schematically.

  The bath water pump 500 is supplied with priming water prior to operation.

  The first tap water supply electromagnetic valve 61 a is opened, and tap water is supplied to the first water channel chamber 123. Since the switching valve has already been opened, tap water flows into the bath water channel chamber 130 from the first water channel chamber 123 and accumulates in the pump casing 504 via the bath water discharge pipe 520.

  As the amount of accumulated tap water increases, the air in the pump casing 504 is discharged into the atmosphere via the discharge port 511, the second bath cooling water feed pipe 523, the T-shaped joint pipe 522, and the third bath cooling water feed pipe 524, and the pump The casing 504 is filled with tap water.

  As the tap water is filled in the air in the bath water channel chamber 130, the air finally passes into the atmosphere via the second bath cooling water feed pipe 523, the T-shaped joint pipe 522, and the third bath cooling water feed pipe 524. The priming water supply ends.

  The supply of the priming water is mainly performed from the discharge port 510 having a larger diameter than the small discharge port 511, so that the priming water is supplied quickly.

  When the bath water pump 500 is operated, the first tap water supply electromagnetic valve 61a is closed. In the washing operation, since the bath water sucked up by the bath water pump 500 is stored in the outer tub 2, the switching valve is opened.

  The sucked bath water is poured into the outer tub 2 via the bath water discharge pipe 520, the bath water channel chamber 130, the switching valve, the first channel chamber 123, and the washing water outflow connection port 120. Part of the sucked-up bath water is poured into the water-cooled dehumidifying member 28 via the small discharge port 511, the second bath cooling water feed pipe 523, the T-shaped joint pipe 522, and the third bath cooling water feed pipe 524. Finally, it accumulates in the outer tub 2.

  In the washing operation, the bath water sucked up by the bath water pump 500 is poured into the water-cooled dehumidifying member 28, so that the switching valve is closed.

  The outflow hole provided on the outflow end side of the T-shaped joint pipe 522 is a hole having a small diameter and a diameter of 2 mm. The channel diameter in the T-shaped joint pipe 522 and the inner diameter of the third bath cooling water feed pipe 524 are both about 7 mm.

  Further, the inflow hole provided in the inflow connection port 121 for bath cooling water of the water supply switching unit support base 63 is also a small hole with a small diameter of 2 mm.

  The bath water cooling water supply path from the bath water pump 500 through the T-shaped joint pipe 522 and the third bath cooling water feed pipe 524 to the cooling water injection pipe 527 has a small diameter and a plurality of small holes. ing.

  A plurality of small holes with small apertures can smooth the amount of dehumidifying cooling water that is smoothed and poured into the water-cooled dehumidifying member 28 even if the discharge pressure of the bath water pump 500 fluctuates. For this reason, the dehumidification at the time of drying is stabilized.

  The control circuit will be described with reference to FIG.

  This figure is a block diagram showing the entire control circuit.

  As shown in FIG. 19, a microcomputer 400 that controls processes from washing, rinsing, dehydration, and drying includes a timer 401, a central processing unit (CPU) 402, a memory 403, an input port 404, an output port 405, and the like. The central repair device 402 includes a calculation unit 402a, a control unit 402b, and the like.

  The washing machine is operated by being driven based on conditions set by exchanging data by the central repair device 402, the timer 401, and the memory 403 in the microcomputer 400.

  The central repair device 402 is basically a control command fetching, decoding, and execution command. Specifically, the central repairing device 402 is controlled by arithmetic operations and reading of memory-designated address contents, and input / output of a designated address to the input / output device. Controls fully automatic courses and annual setting programs.

  The memory 403 has two types, a RAM 403a having a function of reading and writing program data, and a ROM 403b having only a read-only function. The RAM 403a mainly stores and sets data necessary for washing operation conditions. It is used as a work area when creating a programmed program.

  The ROM 403b is used when a predetermined program or fixed data is entered and the same processing is performed at any time. The input port 404 and the output port 405 are circuits that mediate when data is exchanged among the central repair device 402, the input circuit unit 406, and the output drive circuit unit 407.

  The output drive circuit unit 407 is connected to various sensors, a power switch 408, and the like incorporated in the washing machine, and various types of information are captured. Electric power necessary for operating the washing machine is supplied from the power switch 409.

  By pressing the power switch 409, the water supply electromagnetic valve 6 is opened, and water necessary for washing and rinsing is supplied into the washing machine.

  The amount of water required for washing and rinsing is appropriate if the information is received from the water level sensor 47 incorporated in the washing machine and processed by the central repair device 402 to determine whether the amount of water is appropriate. If the washing operation proceeds.

  Further, detection by the water level sensor 47 is also performed during the drying operation. The water level detection during the drying operation will be described later.

  The rotation speed of the washing / drying drive motor 10 of the DC brushless motor rotated by washing, dehydration, rinsing, drying, etc. is detected by an IC Hall element 420 provided in the vicinity of the washing / drying drive motor 10. Information detected by the IC Hall element 420 is processed by the central processing unit 72, and proper rotation control of the washing and drying drive motor 10 is performed.

  In addition, a lid opening / closing sensor 421 that detects the opening / closing state of the lid, a fully automatic course selection key 422 that sets a fully automatic course, a cloth amount sensor 423 that detects the amount of laundry, and the like are provided on the input circuit unit 406 side. ing. In addition, a temperature sensor 424 for detecting the temperature of the drying air is provided.

  The output drive circuit unit 407 includes a bath water pump 500, a circulation fan 29, a washing and drying drive motor 10, a supply water switching device 62, a drain valve 44, a first tap water supply electromagnetic valve 61a, and a second tap water supply water. An electromagnetic valve 61b, a detergent water supply electromagnetic valve 61c, a softener water supply electromagnetic valve 61d, a heater 40, a circulation pump 45, and the like are provided.

  The washing and drying machine automatically performs operations such as washing, rinsing, dehydration and drying while exchanging information with the microcomputer 70 via the input circuit unit 406 and the output drive circuit unit 407.

  The water supply operation in the washing operation and the water supply operation in the dry operation will be described with reference to FIGS.

  These figures are also schematically shown for easy understanding of the operation.

  First, water supply for washing operation will be described with reference to FIGS. 15 and 16.

  FIGS. 15 and 16 show related operations of the water supply switching unit and the bath water pump in the water supply during the washing operation.

  With reference to FIG. 15, the supply of tap water for washing operation will be described.

  When the switching valve of the supply water switching device 62 is opened and the first water supply electromagnetic valve 61 a for tap water is opened, the tap water flows through the first water channel chamber 123 and the washing water injection pipe 525 and is poured into the outer tub 2. Since the drain valve 44 is closed, the tap water accumulates in the outer tub 2.

  A part of the tap water passes through the open switching valve, passes through the bath water pump 500, and flows into the second water channel chamber 124 via the third bath cooling water feed pipe 524 and the like.

  At this time, as described above, the diameter provided at the outflow end side of the T-shaped joint pipe 522 and the inflow connection port 121 for bath cooling water is narrowed down and the inside of the small hole (diameter 2 mm) is washed with tap water. For this reason, clogging due to dirt or the like of bath water adhering to a small hole with a small diameter is eliminated.

  Further, the water is diverted in the first water channel chamber 123, and tap water is poured into the water-cooled dehumidifying member 28 from the cleaning water pouring pipe 526. The lint and the like adhering to the water-cooled dehumidifying member 28 is washed with the tap water.

  With reference to FIG. 16, the supply of bath water in the washing operation will be described.

  Prior to the operation of the bath water pump 500, priming is performed. Since the operation of priming was described above, it is omitted here. The switching valve of the supply water switching device 62 is opened.

  The bath water that has been sucked up and flows into the bath water channel chamber 130 passes through the opened switching valve, moves to the first channel chamber 123, flows through the washing water injection pipe 525, and is poured into the outer tub 2.

  Part of the bath water flows to the cooling water injection pipe 527 via the T-shaped joint pipe 522, the third bath cooling water feed pipe 524, and the second water channel chamber 124. When bath water is being sucked up, the above-mentioned diameter is reduced and the bath water circulates in the small holes, so that it is difficult for scales to stick and clogging of the holes is eliminated.

  Further, the water is diverted in the first water channel chamber 123 and bath water is poured into the water-cooled dehumidifying member 28 from the cleaning water injection pipe 526. The lint etc. adhering to the water-cooled dehumidifying member 28 are washed with the bath water.

  The water supply of the bath water pump 500 in such a washing operation is about 13 L per minute, which is the same as that of tap water. The rotational speed of the bath water pump 500 is about 7000 RPM.

  The water supply in the drying operation will be described with reference to FIGS.

  17 and 18 show operations related to the water supply switching unit and the bath water pump in the water supply during the drying operation.

  With reference to FIG. 17, the supply of tap water during the drying operation will be described.

  The second water supply electromagnetic valve 61b for tap water is opened and the tap water flows into the second water channel chamber 124. Cooling water for tap water flowing through the cooling water outlet connection port 101 and the cooling water injection pipe 527 having an outlet hole with a diameter of 3.5 mm provided in the second water channel chamber 124 is poured into the water cooling and dehumidifying member 28. .

  The amount of cooling water poured into the water-cooled dehumidifying member 28 is about 0.3 to 0.5 L per minute. The water contained in the drying air flowing in the dehumidification circuit 21 is taken away by water injection into the water-cooled dehumidifying member 28 of the cooling water.

  The switching valve of the feed water switching device 62 is opened together when the second tap water supply electromagnetic valve 61b is opened. A part of the tap water flowing into the second water channel chamber 124 flows to the bath water pump 500 via the third bath cooling water feed pipe 524, the T-shaped joint pipe 522 and the like.

  The tap water flowing out of the bath water pump 500 passes through the open switching valve, moves to the first water channel chamber 123, flows through the washing water injection pipe 525 and the washing water injection pipe 526, and is poured into the outer tub 2. .

  With tap water flowing from the second water channel chamber 124 toward the bath water pump 500, the inside of the small holes (diameter 2 mm) provided in the bath cooling water inflow connection port 121 and the outflow end side of the T-shaped joint pipe 522 are washed. .

  For this reason, the dirt etc. of the bath water adhering to a small hole is removed, and a hole clogging is eliminated beforehand. Moreover, the insides of the third bath cooling water feed pipe 524, the T-shaped joint pipe 522, and the like are also washed well.

  The water supply of the bath water at the time of drying operation will be described with reference to FIG.

  The bath water pump 500 is operated with the switching valve of the supply water switching device 62 closed.

  The bath water sucked up by the bath water pump 500 has the switching valve closed, so that the second water channel chamber passes through the bath water channel chamber 130, the T-shaped joint pipe 522, the third bath cooling water feed pipe 524, and the like. 124.

  The cooling water of the bath water flowing from the second water channel chamber 124 through the cooling water injection pipe 527 is poured into the water cooling / dehumidifying member 28. Since the amount of cooling water for bath water is about 0.3 to 0.5 L per minute, the rotational speed of the bath water pump 500 can be suppressed to about 5000 RPM.

  Since the bath water flow is suppressed by the small holes (diameter 2 mm) provided in the inflow connection port 121 for bath cooling water and the T-shaped joint pipe 522, the bath water pump 500 originally capable of sucking up 13L is used. Regardless, it can be limited to a small amount of water of about 0.3 to 0.5 L per minute.

  In this way, the bath water pump 500 is used to use the bath water as the cooling water during the drying operation, thus saving the tap water.

  Further, the supply water switching device 62 is provided with a switching valve so that the first tap water supply electromagnetic valve 61a for supplying washing water communicates with the bath water pump 500 side, or the communication is cut off. As a result, the configuration became simple.

  That is, the bath water pump 500 can be primed by opening the switching valve of the supply water switching device 62 to communicate with the first tap water supply electromagnetic valve 61a for supplying washing water and the bath water pump 500. If the supply water switching device 62 is not provided, a tap water supply solenoid valve for priming water is required.

  In the present embodiment, by providing the supply water switching device 62, a tap water supply solenoid valve for priming water becomes unnecessary, and the configuration becomes simple.

  Further, the supply water switching device 62 supplies the washing water supplied by the first tap water supply electromagnetic valve 61a, the washing water supplied by the bath water pump 500, and the cooling water supplied by the bath water pump 500 during the drying operation. Since it also bears, the configuration becomes simple.

  The drying operation will be described with reference to FIG.

  FIG. 20 shows the operation of the bath water pump, the drain valve, the circulation fan, and the second water supply solenoid valve for the second tap water that are activated during the drying operation over time.

  When the drying process starts, the drain valve 44 is closed, and the circulation fan 29 starts operation. After a few seconds, the bath water pump 500 starts operation. In a few seconds before the bath water pump 500 starts operation, the first tap water supply electromagnetic valve 61a is opened and priming water is supplied.

  The bath water pump 500 is continuously operated at a low speed of 5000 RPM. After 30 minutes from the start of the drying process, the drain valve 44 is closed for a predetermined time. During this time, the water level sensor 47 checks the presence or absence of cooling water.

  That is, when the drain valve 44 is closed, the bath water cooling water sucked up by the bath water pump 500 is formed in the bottom circulation path 20 which is the bottom of the outer tub 2 as shown in FIG. It is detected by the sensor 47.

  When the bath water runs out, water does not accumulate in the bottom circuit 20. By detecting the water level sensor 47, it is possible to know the presence or absence of bath water used for cooling water. This check for the presence or absence of cooling water is performed until the laundry is dried.

  When the running out of bath water is detected, the first tap water supply electromagnetic valve 61 is opened to switch to the tap water cooling water, and the drying is continued. There is no inconvenience that the drying operation is stopped halfway with no drying.

  The detection of the water level sensor 47 is performed after 120 seconds have elapsed after the drain valve 44 is closed. The elapsed time of 120 seconds is a reference time for achieving a water level that can be detected by the water level sensor 47.

  If the water level sensor 47 cannot detect the predetermined water level even after a maximum of 5 minutes has elapsed since the detection of the water level, it is switched to cooling water for tap water. When the water level sensor 47 detects the predetermined water level, the drain valve 44 is immediately opened, and the drying operation using the bath water as cooling water is continued.

  The circulation fan 29 is operated with the air volume lowered during the time that the water level sensor 47 is detecting. After 120 seconds have passed since the drain valve 44 was closed, the circulation fan 29 reduces the rotational speed to 4750 RPM to 2500 RPM and shifts to the operation mode in which the air volume is suppressed.

  This operation mode is for suppressing wind noise generated from the bottom circulation path 20. As shown in FIG. 1, cooling water accumulates in the bottom circulation path 20 when the drain valve 44 is closed. The drying air flows through a narrow passage narrowed between the ceiling of the bottom circulation path 20 and the accumulated water surface.

  Wind is generated by the dry air flowing on the water surface. Generation of wind noise can be suppressed by reducing the air volume of the drying air.

  When the bath water pump 500 starts operation and continues to dry even after 150 minutes, the drying operation is performed by switching the cooling water to tap water.

  By this switching, wear of the bath water pump due to excessive continuous operation can be suppressed.

  Moreover, when the temperature of bath water is too high, condensation of drying air is not good. Drying does not end after 150 minutes.

  When a temperature sensor for detecting the water temperature is provided in the cooling water supply path of the bath water, and the temperature detected by the temperature sensor during the drying operation is higher than a predetermined temperature, the water supply electromagnetic valve 61b for the second tap water is opened and the tap water is supplied. Water is used as cooling water.

  It is also possible to use cooling water obtained by adding tap water to hot bath water. When the tap water is added, the tap water is wasted if the second tap water supply electromagnetic valve 61b is continuously opened. It is desirable in terms of water saving to open the second tap water water supply electromagnetic valve 61b intermittently.

It is a figure concerning the Example of this invention, and is a figure which shows the outline | summary of a washing dryer. FIG. 5 is a plan view seen from above where a water supply switching unit, a bath water pump, and various pipes are assembled according to an embodiment of the present invention. It is a perspective view which looked at the place where the water supply switching unit, the bath water pump, and the various pipes were assembled from the supply water switching device side according to the embodiment of the present invention. It is a perspective view which looked at the place where the water supply switching unit, the bath water pump, and the various pipes were assembled from the water supply electromagnetic valve side according to the embodiment of the present invention. It is a perspective view which looked at the water supply switching unit with which the cover of the water supply switching device was removed from the side of the water supply switching device, according to the embodiment of the present invention. FIG. 5 is an exploded perspective view of a water supply switching unit as seen from the supply water switching device side according to the embodiment of the present invention. FIG. 5 is an exploded perspective view of a water supply switching unit as seen from the water supply solenoid valve side according to the embodiment of the present invention. It is a top view seen from the top concerning the Example of this invention, and a water supply switching unit. FIG. 9 is a cross-sectional view taken along the line AA of FIG. 8 according to the embodiment of the present invention. It is a longitudinal cross-sectional view of the bath water pump concerning the Example of this invention. FIG. 5 is a perspective view of a water supply switching unit support base as viewed from one side of the support base corresponding to the supply water switching device according to the embodiment of the present invention. FIG. 5 is a perspective view of the water supply switching unit support base as viewed from one side of the support base corresponding to the water supply solenoid valve according to the embodiment of the present invention. It is a perspective view related to the Example of this invention, and represented the inside of the water supply switching unit support base, both surfaces of the back and front together. According to an embodiment of the present invention, a first water channel chamber, a bath water channel chamber, a tap water supply electromagnetic valve (water supply valve), a supply water switching device switching valve, a bath water pump, and a T-shape It is the figure which showed the relationship with a coupling pipe schematically. FIG. 5 is a diagram illustrating an operation related to a water supply switching unit and a bath water pump in water supply during a washing operation when using tap water according to an embodiment of the present invention. FIG. 5 is a diagram illustrating an operation related to a water supply switching unit and a bath water pump in water supply during a washing operation when the bath water pump is used according to the embodiment of the present invention. It is a figure which showed the related operation | movement with the water supply switching unit and bath water pump in the water supply at the time of drying operation about the use of a tap water in connection with the Example of this invention. FIG. 5 is a diagram illustrating an operation related to the water supply switching unit and the bath water pump in the water supply during the drying operation when the bath water pump is used according to the embodiment of the present invention. FIG. 3 is a block diagram showing the entire control circuit according to an embodiment of the present invention. It is a figure which showed the operation | movement of the bath water pump, the drain valve, the circulation fan, and the 2nd water supply solenoid valve for 2nd tap water which operate | move at the time of drying operation in connection with the Example of this invention in progress of time.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Inner tank, 2 ... Outer tank, 29 ... Circulation fan (air blowing means), 40 ... Heater (heating means), 28 ... Water-cooling dehumidification member (dehumidification means), 500 ... Bath water pump, 503 ... Pump runner, 504 ... Casing, 510 (511) ... discharge port, 525 ... washing water injection pipe (washing water supply passage), 61a ... first water supply electromagnetic valve for water supply, 524 ... third bath cooling water feed pipe (cooling water supply passage), 62 ... Supply water switching device (switching valve).

Claims (9)

An inner tub for washing, dehydrating and drying the laundry; an outer tub in which the inner tub is placed and storing washing water; a blowing means for blowing drying air for drying the laundry; and the drying air. Heating means for heating, dehumidifying means for dehumidifying and removing moisture contained in the drying air, and a bath water pump for sucking up bath water,
In the washing and drying machine, the bath water pump has a pump runner, a casing in which the pump runner is placed, and a discharge port communicating with the casing.
A bath water channel chamber that communicates with the bath water pump through the discharge port, and the bath water pumped up by the bath water pump flows into the inner tank;
The tap water communicated with the water supply via the first tap water supply solenoid valve is supplied to the bath water pump as priming water supplied from the first tap water supply solenoid valve, or flows into the inner tub as wash water. A first water channel;
A second water channel chamber communicating with the water supply via a second water supply electromagnetic valve for tap water, and flowing out the tap water supplied from the second water supply electromagnetic valve for tap water to the dehumidifying means;
A cooling water supply passage that communicates the second water channel chamber and the bath water pump and supplies bath water sucked up by the bath water pump as cooling water for the dehumidifying means;
Or communicates with the bath water waterway chamber and the first water passage chamber, have a switching valve for opening and closing or refusing communication,
When the switching valve is opened, the bath water channel chamber communicates with the first water channel chamber, and when the switching valve is closed, the communication between the bath water channel chamber and the first water channel chamber is closed,
Prior to sucking up the bath water, the switch valve is opened to supply tap water from the first water supply solenoid valve for tap water as the priming water to the bath water pump.
In the washing operation in which the switching valve is opened, the bath water sucked up by the bath water pump by communication between the bath water channel chamber and the first water channel chamber passes from the bath water channel chamber through the first water channel chamber to the inner tank. Supplied to
In the drying operation in which the switching valve is closed, the bath water sucked up by the bath water pump from which the supply from the bath water channel chamber to the first water channel chamber is stopped passes through the second water channel chamber from the cooling water supply channel. Then, the washing and drying machine is supplied to the dehumidifying means. In the washing and drying machine according to claim 1,
A cleaning water supply passage for supplying cleaning water to the dehumidifying means;
The washing / drying machine characterized in that the washing water supply passage communicates with the first water channel chamber. In the washing and drying machine according to claim 1,
A washing and drying machine, wherein at least two small holes for reducing the amount of water are provided in the cooling water supply passage. In the washing and drying machine according to claim 1,
The washing and drying machine, wherein the discharge port includes a discharge port having a large diameter and a discharge port having a small diameter. In the washing and drying machine according to claim 1,
A washing / drying machine, characterized in that the first tap water supply electromagnetic valve, the second tap water supply electromagnetic valve, and the supply water switching device including the switching valve are combined into a single water supply switching unit. In the washing and drying machine according to claim 5,
The water supply switching unit has a water supply switching unit support base to which the first water supply electromagnetic valve for tap water, the second water supply electromagnetic valve for tap water, and the water supply switching device are attached and supported. . The washing and drying machine according to claim 6,
The washing / drying machine, wherein the first and second tap water electromagnetic solenoid valves and the supply water switching device are arranged on both sides of the water supply switching unit support base. . The washing and drying machine according to claim 7,
The water supply switching unit support base has a plurality of water channel chambers for guiding bath water sucked up by the bath water pump and tap water supplied from the first tap water supply electromagnetic valve and the second tap water supply electromagnetic valve. A washing dryer characterized by that. The washing and drying machine according to claim 6,
A washing and drying machine, wherein a valve seat from which a valve body of the water supply switching device is attached and detached is provided on the water supply switching unit support base.

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