JP4525463B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a washing / drying machine which performs washing and drying used in general households on the same rotating drum.

  As a conventional washing / drying machine of this type, there are one using a heater as a heat source when drying clothes after washing, and one using a heat pump device as a heat source (see, for example, Patent Document 1).

  Hereinafter, the conventional washing dryer described in the above-mentioned Patent Document 1 will be described with reference to FIG.

  FIG. 4 is a side sectional view of the conventional washing and drying machine described in Patent Document 1. As shown in FIG.

  In FIG. 4, the washing / drying machine 1 has a casing 2, and a door 12 for putting clothes 6 in and out is attached to the center of the front surface of the casing 2 so that the clothes 6 can be opened and closed. It is stored freely. A predetermined part of the inner wall of the rotary drum 3 has a beater 5 for lifting and dropping the clothes 6 along with the rotation of the rotary drum 3, and a plurality of punching holes 4 through which washing water 7 and circulating air 9 for drying enter and exit. Opened.

  The shaft 11 of the rotary drum 3 is connected to a drive motor (not shown) and is driven to rotate. Further, the rear surface of the rotating drum 3 in the casing 2 is partitioned by a partition wall 22 having an air inlet 24 and an air outlet 23, and ducts 10 and 13 through which the circulating air 9 passes are formed. A lower portion of the front surface of the partition wall 22 forms a washing tub 14, and a lower portion of the rotating drum 3 faces the portion of the washing tub 14.

  Each of the air ducts 10 and 13 is formed with a so-called heat pump cycle including a compressor 19, a condenser 18 (condenser), a fan 17, an expansion valve 20, an evaporator 15 (evaporator) and the like. A part of the capacitor 18 is extended to the outer back surface of the casing 2 to form a radiator 16. 21 is a drain drain pipe, and 8 is a washing drain pipe.

  The operation and action of each process of the conventional washing and drying machine having the above-described configuration are as follows.

  In the washing and rinsing process, the door 12 is opened, the clothes 6 and an appropriate amount of detergent are put into the rotating drum 3, the door 12 is closed, and the following processes are executed.

  A prescribed amount of water 7 is supplied from a water supply valve (not shown) to the washing tub 14 up to the position of the water level A. The rotating drum 3 rotates continuously or intermittently at a predetermined number of rotations programmed to perform cleaning.

  During this time, the garment 6 is lifted and dropped by the beater 5. After completion of washing, water 7 is drained out of the machine from a washing drain pipe 8 provided at the bottom of the washing tub 14. Subsequently, the rinsing process is executed with the same contents. When the rinsing process is completed, the rinsed water 7 is also drained out of the machine from the laundry drainage pipe 8 as washing drainage.

In the dehydration step, the rotating drum 3 rotates at a programmed number of rotations to dehydrate moisture in the clothing 6. The dewatered water is also drained out of the machine from the laundry drainage pipe 8 as laundry drainage.
During the drying process, the compressor 19, the fan 17 and the rotating drum 3 are operated, and the circulating air 9 circulates from duct 10 ⇒ duct 13 ⇒ inside the rotating drum 3 ⇒ duct 10.

The water vapor evaporated from the clothing 6 is brought into contact with the evaporator 15 through the air outlet 23 and the duct 10 together with the circulating air 9, where it is cooled to be condensed water (condensed water) and collected and dehumidified. The dehumidified circulating air 9 is sent to the condenser 18 by the fan 17, heated there to become hot air, flows into the rotary drum 3 through the duct 13 and the air inlet 24, and evaporates moisture from the clothing 6 again. . The condensed water dehumidified by the evaporator 15 is drained out of the apparatus through a drain drain pipe 21. During this time, the rotating drum 3 rotates continuously or intermittently at a preset number of rotations as in the washing process.
JP-A-6-75628

  However, in the configuration of the conventional washing / drying machine, the drain drain pipe 21 and the wash drain pipe 8 are provided separately, and the wash water (water 7) and the dew condensation water are separately guided outside the machine. In a general washing machine that does not have a drying function, there is only one drainage hose corresponding to the drainage pipe. When a washing / drying machine having a drying function is newly installed at the place where the washing machine is installed, Similarly to the above, it is desirable in terms of installation work, installation members such as a waterproof floor, and piping equipment under the floor that one drainage hose can perform drainage treatment of both washing water (water 7) and condensed water.

  Therefore, if the drain drain pipe 21 and the laundry drain pipe 8 are connected as they are in the machine, the water level of the water 7 stored in the washing tub 14 during washing is high, and the drain from the laundry drain pipe 8 is drained by water pressure during the washing drain. If the water 7 flows into the drainage pipe 21 and the installation position of each means such as the evaporator 15, the fan 17, and the condenser 18 for performing dehumidification and heating is lower than the stored water level A of the water 7. Each means has a problem that it becomes wet with washing water (water 7) in which a detergent, a bleaching agent or the like is dissolved, and causes problems such as poor insulation and corrosion.

  Further, in the configuration of the conventional washing and drying machine, the drain drain pipe 21 is provided so as to drain right below the washing machine. However, when drainage to the bottom cannot be performed due to the location of the washing and drying machine, Although it is necessary to provide the drain drain pipe 21 on the side surface of the washing / drying machine, there is a problem that drainage due to natural fall cannot be performed depending on the positional relationship between the heat pump cycle and the drain drain pipe 21.

  In order to overcome these problems, it is conceivable to form a drainage path using a drainage pump, but there is a problem that water leakage may occur when the motor in the drainage pump is locked.

  An object of the present invention is to solve the above-described conventional problems and to provide a washing and drying machine capable of preventing water leakage when a motor in a drain pump is locked.

In order to solve the above-described conventional problems, a washing and drying machine according to the present invention includes a rotating drum into which clothes are put, a washing tub that rotatably stores the rotating drum, and a first motor that rotates the rotating drum. And air blowing means for circulating drying air when the clothes are dried, dehumidifying means for collecting moisture from the circulating drying air as condensed water, and a drainage tank for collecting the condensed water collected by the dehumidifying means, A drainage pump that pumps up the condensed water in the drainage tank and is driven by a second motor, a condensation drainage channel that drains the condensed water pumped up by the drainage pump, and a locked state of the second motor. The motor lock detecting means for detecting, the operation of the first motor , the air blowing means, the dehumidifying means , the second motor and the like are controlled to wash and soot.
Technique, dehydration, and control means for performing the steps of drying, the control means, said first motor, said blowing means, to dry the clothes by controlling the dehumidifier and said second motor When the motor lock detecting means detects the locked state of the second motor during the drying process, the dehumidifying means continues to operate and energization of the second motor is stopped for a predetermined time. again repeated a predetermined number of times the operation of energizing the second motor after still when said second motor is in a locked state, which was so as to stop the operation of the dehumidifier, the erroneous detection of the motor lock In the locked state that can be prevented and restored by restarting, the operation of the dehumidifying means is not stopped, so that a washing and drying machine with good drying efficiency can be provided .

  The washing / drying machine of the present invention can prevent water leakage when the motor in the drainage pump is locked.

According to a first aspect of the present invention, there is provided a rotary drum into which clothes are put, a washing tub that rotatably stores the rotary drum, a first motor that rotates the rotary drum, and circulation of drying air when the clothes are dried. A blowing means for allowing the moisture to be collected from the circulating drying air as dew condensation water, a drain tank for collecting the dew condensation water collected by the dehumidification means, and pumping up the dew condensation water in the drain tank . A drainage pump driven by the motor of No. 2 , a condensation drainage channel for draining the condensed water pumped up by the drainage pump, a motor lock detecting means for detecting a lock state of the second motor, and the first motor, said blowing means, said dehumidifier, washing by controlling the operation of such the second motor, rinsing, dehydrating, and a control means for executing the steps of drying, wherein, before The motor lock detecting means detects the locked state of the second motor during execution of a drying process in which the first motor, the air blowing means, the dehumidifying means, and the second motor are controlled to dry clothes. In this case, the operation of the dehumidifying means continues, and after the energization of the second motor is stopped for a predetermined time, the operation of energizing the second motor again is repeated a predetermined number of times. Since the operation of the dehumidifying means is stopped when in the locked state, the erroneous detection of the motor lock is prevented, and the operation of the dehumidifying means is not stopped in the locked state that can be restored by restarting. A laundry dryer with good drying efficiency can be provided .

In particular, according to a second aspect of the invention, in the first aspect of the invention , the water level detection means for detecting the water level of the dew condensation water in the drain tank is provided . When the motor level is detected , the dehumidifying unit is stopped when the water level detecting unit detects a predetermined water level. Even if the motor in the drain pump is locked, water leakage is possible. Thus, it is possible to provide a washing / drying machine capable of continuing the operation of the dehumidifying means until the property is generated.

In the third invention, in particular, the dehumidifying means of the first or second invention includes a compressor that compresses the refrigerant, a radiator that dissipates heat of the compressed refrigerant, and a pressure of the high-pressure refrigerant. And a heat pump device in which the refrigerant is depressurized and deprived of heat from the surroundings and is connected by a pipe line so that the refrigerant circulates, and is discharged to the outside. It is possible to provide a washing / drying machine that recovers the amount of heat and can effectively dry clothes using energy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
The washing / drying machine in the 1st Embodiment of this invention is demonstrated using FIGS. 1-3.

  FIG. 1 is a perspective view of the washing / drying machine according to the present embodiment as seen from the back, and FIG. 2 is a side sectional view of the washing / drying machine.

  In FIG. 1, a washing tub 26 is provided in a washing / drying machine main body 25 (hereinafter referred to as “main body 25”) in the present embodiment, and a motor 27 is attached. The washing tub 26 is attached to the inside of the main body 25 while being supported by suspensions 29 on both sides and an upper suspension 30.

  The main body 25 is composed of a compressor 35 that compresses the vaporized refrigerant, a tube heat exchanger with plate fins that radiates the heat of the compressed high-temperature and high-pressure refrigerant, and the pressure of the high-pressure refrigerant. And an expansion valve or a throttle means 37 formed of a capillary tube, and a heat sink 38 which is composed of a tube-type heat exchanger with plate fins and depressurizes and takes heat from the surroundings with a low pressure refrigerant. A heat pump device is formed by connecting the machine 35, the radiator 36, the throttle means 37, and the heat absorber 38 in this order and connecting them with a conduit 39 so that the refrigerant circulates again through the compressor 35.

  The air passage 40 is configured to communicate the heat absorber 38 as a dehumidifying means for cooling the drying air and the radiator 36 as a heating means for heating the drying air. The washing tub 26 and the air passage 40 are connected by flexible hoses 41 and 42. The air passage 40 is provided with air blowing means 43. A duct 44 is provided on the outer wall of the washing tub 26 and communicates the inside of the washing tub 26 and the air passage 40. An arrow B indicates the flow of drying air in the duct 44 and the air passage 40.

  In FIG. 2, the rotating drum 28 is attached directly to the shaft 27 a of the motor 27 and installed in the washing tub 26. At positions corresponding to the front opening portions 26 a and 28 a of the washing tub 26 and the rotary drum 28, doors 32 for putting the clothes 31 into the rotary drum 28 are provided. A gap between the main body 25 and the washing tub 26 is substantially sealed by a bellows 33 and a door packing 34 so that air does not leak into the main body 25 or outside the main body 25. A plurality of holes 45 and openings 46 through which washing water and drying air enter and exit are provided on the side wall and bottom of the rotating drum 28. The opening 56 is provided on the inner wall of the washing tub 26 and communicates the inside of the washing tub 26 with the duct 44. An arrow C indicates the flow of drying air in the washing tub 26 and the rotating drum 28.

  The washing drainage channel 47 drains the washing water and the rinsing water at the time of easy washing. The condensation drainage channel 48 allows the condensed water generated by the heat absorber 38 to flow when the clothes 31 are dried, and the washing drainage channel 47 and the condensation drainage channel 48 are connected to a single drainage pipe 49. The tip 50 of the drain pipe 49 is open to the atmosphere outside the main body 25. There is one drainage valve 60 at the junction of the washing drainage channel 47 and the condensation drainage channel 48, and the drainage treatment means is constituted by the washing drainage channel 47, the condensation drainage channel 48, the drainage pipe 49, and the drainage valve 60. .

  In the present embodiment, when the heat absorber 38 that is a dehumidifying means cannot be disposed upward in the configuration, the condensed water accumulates at a position lower than the installation position of the drain valve 60, and the condensed water cannot be drained directly to the drain valve 60. The drainage treatment means further includes a drainage tank 67 for accumulating condensed water, and a drainage pump 68 for pumping up water in the drainage tank 67, and the water absorption part 69 of the drainage pump 68 is a substantially bottom part of the drainage tank 67. The discharge port 70 of the drainage pump 68 is connected to the condensation drainage channel 48.

The control means 71 drives and controls the operation parts such as the compressor 35 and the drainage pump 68 according to information from each detection means (not shown) and the elapsed time. The motor lock detecting means 72 detects that a motor (not shown) provided in the drain pump 68 and driving the drain pump 68 is in a locked state. 73 is a water level detection means for detecting the level of condensed water in the drainage tank 67.

  Next, the configuration of the drain valve 60 will be described with reference to FIG.

  FIG. 3 is an enlarged cross-sectional view of the drain valve 60. The drain valve 60 includes a washing drain channel 47, a condensation drain channel 48, a valve 61 for switching the channel between the drain pipes 49, and a motor for driving the valve 61 to rotate. 62. When the valve 61 is driven by the motor 62 and the d side of the flow path 61a is closed, the washing drainage channel 47 side is closed, the condensation drainage channel 48 side (e side) is opened, and conversely the motor 61 rotates the valve 61. Then, the washing drainage channel 47 side is opened, the condensation drainage channel 48 side is closed, and the backflow prevention that prevents the washing water and the rinsing water from flowing backward from the washing drainage channel 47 to the condensation drainage channel 48 is performed. Means are formed.

  The operation and action of the washing / drying machine configured as described above will be described below.

  When water is accumulated in the steps from washing, rinsing and dehydration, the state of the valve 61 of the drain valve 60 is the d side in FIG. 3, the washing drain channel 47 side is closed, and the condensation drain channel 48 side is opened. . Water is supplied to the washing tub 26 from a water supply valve (not shown), and is stored up to the position of the water level D in FIG. The rotating drum 28 rotates continuously or intermittently at a programmed number of rotations, and cleaning and rinsing are performed. During this time, the garment 31 is lifted and dropped by the rotation of the rotary drum 28. When draining, the valve 61 of the drain valve 60 is set to the e side in FIG. 3, the washing drainage channel 47 side is opened, and the condensation drainage channel 48 side is closed. The washing water in the washing tub 26 passes through the washing drainage channel 47 and the drainage valve 60 without flowing into the condensation drainage channel 48 and is drained from the drainage pipe 49 to the outside of the main body 25.

  In the present embodiment, since the water may be accumulated in the drainage tank 67 via the duct 44 even during the washing process, the control means 71 performs a predetermined stop time while the drainage pump 68 is stopped. When it has elapsed, the drain pump 68 is operated to discharge condensed water to the outside of the main body 25, and when a predetermined operation time has elapsed during the operation of the drain pump 68, the drain pump 68 is stopped. ing.

  In the drying step, the valve 61 of the drain valve 60 is rotated to the d side in FIG. 3 to close the washing drain channel 47 side and open the condensation drain channel 48 side, and the control unit 71 controls the compressor 35 and the blowing unit 43. And the rotating drum 28 is operated. By the operation of the blowing means 43, the drying air circulates inside the washing tub 26 and the duct 44, the flexible hose 41, the air path 40, and the flexible hose 42. The clothing 31 is agitated by the rotation of the rotating drum 28 continuously or intermittently performed at a preset number of rotations.

  By the operation of the compressor 35, the refrigerant circulates in the pipe 39, and the heat of the high-temperature and high-pressure refrigerant is radiated by the radiator 36 to heat the circulating drying air. The heated drying air is sent into the washing tub 26 as shown by an arrow C in FIG. 2, passes through the opening 46 in the bottom surface of the rotary drum 28, hits the clothing 31, and takes away moisture from the clothing 31. Then, the air passes through a plurality of holes 45 provided in the side wall of the rotary drum 28 as humid air, and then passes through the opening 56 of the washing tub 26 and is sent to the duct 44. The drying air that has passed through the duct 44 passes through the flexible hose 41 and is dehumidified by a heat absorber 38 provided in the air passage 40 as indicated by an arrow B.

  The dehumidified drying air is sent again to the radiator 36 by the blowing means 43 and heated. Condensed water generated in the heat absorber 38 drops into the drain tank 67 and accumulates there. At this time, the control means 71 drives the drain pump 68 at a predetermined time interval, and discharges the condensed water accumulated in the drain tank 67.

  At this time, the motor lock detection means 72 determines whether or not the motor is locked based on the amount of current flowing through the motor in the drainage pump 68. If it is determined that the motor is locked, the control means 71 drives the compressor 35. By stopping, the dehumidification in the heat absorber 38 which is a dehumidifying means is stopped.

  As described above, according to the present embodiment, the motor lock detecting means 72 for detecting that the motor in the drain pump 68 is in the locked state is provided, and when it is detected that the motor is locked, the compressor 35 is detected. Water leakage can be prevented by providing the control means 71 for stopping the driving and stopping the dehumidifying operation.

  In addition, since a heat pump device is used in which the compressor 35, the radiator 36, the throttle means 37, and the heat absorber 38 are connected in order and the refrigerant is circulated to the compressor 35 again by a pipe line 39, the outside is used. The amount of heat released can be recovered, and the clothes can be effectively dried using energy.

  In the present embodiment, the dehumidification is stopped immediately when the motor lock detecting means 72 detects that the motor in the drain pump 68 is locked. However, when the lock is detected, a predetermined period of time is detected. The operation of stopping energization of the motor and energizing the motor again is repeated a predetermined number of times, and dehumidification is stopped due to erroneous detection of the motor lock detecting means 72 by stopping dehumidification when it is detected that the motor is locked. Can be prevented. In this case, the predetermined number of times may be once or a plurality of times.

  When the motor lock detecting means 72 detects that the motor in the drain pump 68 is locked, the dehumidification is stopped immediately. However, after the dehumidification is stopped, the energization to the motor is stopped for a predetermined time. Then, the operation of energizing the motor again is repeated a predetermined number of times, and the dehumidification is resumed when the motor operates normally, so that the dehumidification can be prevented from being stopped due to the erroneous detection of the motor lock detecting means 72. In this case, the predetermined number of times may be once or a plurality of times.

  Further, the dehumidification is stopped when the water level in the drainage tank 67 detected by the water level detection means 73 reaches a water level where there is a risk of water leakage, and the lock of the motor in the drainage pump 68 is detected. Even when the motor in the drainage pump 68 is locked, dehumidification can be continued if the water level in the drainage tank 67 is low and there is no risk of water leakage.

  As described above, the washing and drying machine according to the present invention can immediately stop the operation of the dehumidifying means when the motor in the drainage pump is locked and prevent water leakage. It is useful for washing machines that perform dehumidification.

The perspective view which looked at the washing / drying machine in the 1st Embodiment of this invention from the back Side sectional view of the washer / dryer Enlarged sectional view of the drainage valve of the washer / dryer Side view of a conventional washer-dryer

25 Washer / dryer main unit
26 Washing tub 28 Rotating drum 31 Clothing 38 Heat absorber (dehumidifying means)
47 Washing drain 48 Condensation drain 49 Drain pipe 67 Drain tank 68 Drain pump 71 Control means 73 Water level detection means

Claims (3)

A rotating drum into which clothes are put, a washing tub that rotatably stores the rotating drum, a first motor that rotates the rotating drum, a blower that circulates drying air when the clothes are dried , and Dehumidifying means for collecting moisture from the circulating drying air as condensed water, a drainage tank for collecting the condensed water collected by the dehumidifying means, pumping up the condensed water in the drainage tank and being driven by a second motor A drainage pump, a condensation drainage channel for draining the condensed water pumped up by the drainage pump, a motor lock detection means for detecting a lock state of the second motor, the first motor , the blower means, the dehumidifying unit, the second wash by controlling the operation of the motor or the like, rinsing, dehydrating, and a control means for executing the steps of drying, the control means, said first motor When the motor lock detecting means detects the locked state of the second motor during the execution of the drying process of controlling the air blowing means, the dehumidifying means and the second motor to dry the clothes, the dehumidifying means When the operation of the means continues, the operation of energizing the second motor again after the energization of the second motor for a predetermined time is repeated a predetermined number of times, and the second motor is in the locked state And a washing and drying machine in which the operation of the dehumidifying means is stopped . The water level detection means for detecting the level of condensed water in the drainage tank is provided, and the control means detects the water level detection means when the motor lock detection means detects the locked state of the second motor during execution of the drying process. when There has been detected a predetermined water level, washing and drying machine of claim 1, wherein which is adapted to stop the operation of the dehumidifier. The dehumidifying means includes a compressor that compresses the refrigerant, a radiator that dissipates the heat of the compressed refrigerant, a throttle means for reducing the pressure of the high-pressure refrigerant, and the refrigerant that has been decompressed to a low pressure The washer-dryer according to claim 1 or 2 , wherein the heat absorber that takes heat from the surroundings is configured by a heat pump device connected by a pipe line so that the refrigerant circulates.