JP5446901B2 - Drum type washer / dryer - Google Patents

Description

  The present invention relates to a drum type washing and drying machine that performs washing, rinsing, dewatering, and drying processes in a rotating drum that is rotatably supported in a water tank in a horizontal direction or in a direction inclined from the horizontal direction.

  Conventionally, a drum-type washing and drying machine of this type has been proposed that automatically removes lint captured by using a circulation air passage that circulates and supplies drying air by washing with water (for example, a patent) Reference 1).

  FIG. 3 is a longitudinal sectional view of the entire configuration of a conventional drum-type washing and drying machine described in Patent Document 1. As shown in FIG. As shown in FIG. 3, a rotating drum 4 that is formed with a large number of through holes 4a and is rotationally driven to accommodate laundry is rotatably provided in the water tank 3, and water supply, drainage, and rotating drums into the water tank 3 are provided. 4. Washing, rinsing and dehydrating processes are performed by controlling the rotation of No. 4.

  The drying process includes a circulation air passage 13 connected to an exhaust duct 15 provided on the back surface of the water tank 3, a heat exchange duct 16 provided with an evaporator 20 and a condenser 19, a blower fan 21 as a blowing means, and a front surface of the water tank 3. The laundry is dried by circulating the air in the water tub 3 by the air supply duct 14 connected to the air.

  The connection part between the heat exchange duct 16 and the circulation air passage 13 and the connection part between the blower fan 21 and the air supply duct 14 are the connection between the fixed air passage side and the oscillating water tank 3 side. The connecting members 17b and 17a made of a flexible material and having a bellows cross section are connected while absorbing vibration.

  In order to remove lint such as lint that has adhered to clothes or peeled off, a lint filter 22 is installed on the upstream side of the heat exchange duct 16 to intercept the lint.

  Furthermore, a water injection nozzle 23 capable of water injection along the vertical surface on the upstream side of the lint filter 22 is provided, and a water washing means for washing out the lint captured by the water supply from the water supply valve unit 25 is provided, and the heat exchange duct 16 is provided. The drainage port 27 is provided at the lowest part of the pipe, and the lint can be removed from the main water distribution pipe 12 through the water drainage port 27 and the duct water distribution pipe and the drain valve 29.

  This is because if the lint is clogged in a large amount, the circulating air volume decreases and the drying efficiency decreases, so the lint must be removed from the circulating air.

  On the other hand, at the bottom of the rear of the bottom of the water tub 3, a drain port 8 is formed and a tank drain pipe 10 provided with a drain valve 9 is connected in the middle. Captures and removes lint from wastewater during the process.

JP 2006-187449 A

  However, in the above-described conventional configuration, before the lint is captured by the filter 22 provided in the heat exchange duct 16, the lint rises on the wall surface or the step of the circulation air passage 13, or the lint that is a foreign matter due to moisture or static electricity on the wall surface It often adheres to the wall surface of the circulation air passage 13, and especially the connecting member 17b made of rubber or the like has a high friction coefficient so that it adheres easily. There was a problem that the air volume of the circulating air flow to the water tank 3 was reduced, the drying efficiency was lowered due to the reduction of the air volume, the drying time was prolonged, or the drying unevenness was increased.

  This invention solves the said conventional subject, and is providing the drum type washing-drying machine which removes lint by wash | cleaning a circulation ventilation path | route, and a drying efficiency does not fall.

  In order to solve the above-described conventional problems, a drum-type washing and drying machine according to the present invention includes a rotating drum that is provided in a water tub and is driven to rotate by containing laundry, water supply to the water tub, drainage, and the rotation. Control means for controlling each process of washing, rinsing, dehydration and drying by controlling the rotation of the drum, a circulation water supply path for circulating water by a circulation pump at the time of washing and rinsing, and air in the water tank at the time of drying A circulating air passage having a blowing means, a filter for collecting foreign matter in the middle of the circulating air passage, and an intake port for sucking air supplied to the water tank through the circulation air passage, from the water tank. The path branches into a rotary drum side discharge port for discharging circulating water into the rotary drum and a circulation air flow path side discharge port in the vicinity of the intake port, and the rotary drum side discharge port and the circulation feed It is provided with a switching valve for discharging the circulation water from one path side discharge port.

  As a result, lint, which is a foreign matter such as lint attached to the wall surface of the circulation air passage, can be washed away with water supplied by the circulation pump.

  The drum type washing / drying machine of the present invention can prevent the drying efficiency from deteriorating by preventing the accumulation of lint adhering to the wall surface to the circulating air blowing path.

Side sectional view of the drum type washing and drying machine according to the first embodiment of the present invention. Side sectional view of the drum type washing and drying machine according to the second embodiment of the present invention. Overall configuration longitudinal cross-sectional view of a conventional drum-type washing and drying machine

  According to a first aspect of the present invention, there is provided a rotating drum that is provided in a water tub and is rotated and accommodated with laundry, and washing, rinsing, dehydration, and drying are controlled by controlling water supply, drainage, and rotation of the rotating drum. A control means for controlling each stroke, a circulation water supply path for circulating water with a circulation pump at the time of washing and rinsing, a circulation ventilation path having a ventilation means for circulating the air in the water tank at the time of drying, and the circulation ventilation path A rotating drum that includes a filter that collects foreign substances in the middle and an intake port that sucks air supplied to the water tank through the circulating air passage from the water tank, and the circulating water supply path discharges the circulating water into the rotating drum. Branching into a side discharge port and a circulation blowing path side discharge port in the vicinity of the intake port, and circulating water is discharged from either the rotating drum side discharge port or the circulation blowing path side discharge port Since the lint, which is a foreign matter such as lint attached to the wall near the discharge port of the circulation air passage, can be washed away by the water supplied by the circulation pump, the amount of circulation air is secured. Thus, the drying efficiency can be prevented from decreasing. Moreover, the structure which removes lint can be implement | achieved without incurring unnecessary cost with a complicated structure.

  In a second aspect of the invention, in particular, in the first aspect of the invention, the discharge port on the circulating air passage side is a position between the filter and the bent connecting portion constituting the connecting portion between the water tank and the circulating air passage, By being connected to the circulation ventilation path at the top of the bent connection portion, cleaning of the bent connection portion particularly where the lint easily accumulates was effectively performed, so that the circulation ventilation path was prevented from being blocked by the lint, It became possible to prevent the drying efficiency from being lowered by the accumulation of lint and resistance to circulating air flow, and the amount of circulating air decreased.

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

(Embodiment 1)
FIG. 1 is a side sectional view of a drum type washing / drying machine according to a first embodiment of the present invention. The drum-type washing / drying machine of the first embodiment has a washing process such as washing, rinsing and dehydration, and a function of performing a drying process.

  In FIG. 1, a water tank 51 is swingably disposed inside a washing machine casing 50, and a rotating drum 52 is rotatably supported in the water tank 51. The rotating drum 52 is a back surface of the water tank 51. The motor 53 is rotatably driven from the outside.

  A control device (control means) 61 performs operation control such as washing, dehydration, and drying in response to an input from an operation panel 60 provided on the upper front surface of the washing machine body 50.

  During washing and rinsing operation, washing water is poured into the water tank 51 in a timely manner as indicated by a solid arrow A through a detergent case (not shown) and a water supply hose 55 by opening an electromagnetic valve (not shown) of the water supply device 54. .

  When draining, a drain pipe 56 is installed at the bottom of the water tank 51, and when passing through the drain filter 57 from the drain pipe 56, foreign matter is removed and the washing water is discharged from the drain system 58 by opening the drain valve 59. To do. Foreign matters such as lint captured by the drainage filter 57 are removed by the user's appropriate cleaning.

  In addition, the water in the water tank 51 is circulated in the circulation water supply path 66 in order to improve the function of washing and rinsing, such as increasing the dissolution of the detergent during washing and rinsing operations, and improving the permeation of clothes of rinsing water. It has a function.

  That is, during washing and rinsing operation, the washing water in the water tank 51 is circulated from the filter 57 to the inflow pipe 68 through the drain pipe 56 (which constitutes a part of the water circulation system) by driving the circulation pump 67. Water is injected inward from the front opening side of the rotary drum 52 from the switching valve 70 and the rotary drum side discharge pipe 71 through the pump 67 and from the rotary drum side discharge port 72 as indicated by an arrow C. A circulating water stream is formed by repeating the return.

  On the other hand, during the drying operation, the air in the water tank 51 and the rotary drum 52 is sucked by the blower 62 from the air inlet 65 above the water tank 51 (arrow B ") and blown to the drying system 63 as indicated by the broken line (arrow B). ), And circulating air that repeatedly returns the air dried and heated by the dehumidifying part (not shown) and the heating part (not shown) inside the drying system 63 to the inside of the water tank 51 (arrow B ′) through the air supply port 64 is repeated. The clothes in the rotary drum 52 are dried.

  In the middle of the circulation air flow path 74 from the air inlet 65 to the blower 62, the filter 73 is arranged so as to be removable from the outside, and after capturing foreign matter and lint generated from clothing, the air is sent to the drying system 63, Prevents drying efficiency from decreasing. Foreign matter such as lint accumulated on the filter 73 is removed by the user at an appropriate time and removed by cleaning or the like.

  In addition, the connection portion between the water tank 51 that swings due to the rotation of the rotating drum 52 and the circulation air passage 74 that is a fixed-side member configured in the washing machine body 50 has a bellows shape that is formed of a flexible rubber material or the like. The connecting pipe is connected at the bent connecting portion 75.

  Note that the switching valve 70 configured in the circulating water supply path 66 is switched so that the washing water flows to the rotary drum side discharge pipe 71 side during the washing and rinsing process, as described above, but during the drying process, the switching valve 70 is switched. 70 is switched to the circulation ventilation path side discharge piping 76.

  As shown by an arrow D, the circulating water flow is discharged from the circulation fan path side discharge port 77 above the circulation fan path discharge pipe 76 toward the intake port 65 of the circulation fan path 74 and the inner diameter portion of the bent connection part 75. It is configured.

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

  During the drying process, the air inside the water tank 51 is sucked from the intake port 65 to the circulation air flow path 74 by the blower 62, and the circulation water flow in the circulation water supply path 66 driven by the circulation pump 67 is changed over to the switching valve. At 70, switching to the circulation air passage side discharge pipe 76 is performed. As a result, lint such as lint that adheres to and accumulates on the intake port 65 and the bent connection portion 75 is washed away by water injection from the discharge port 77 on the circulation air passage side and is prevented from accumulating.

  At this time, water is supplied from the water supply device 54 during the drying process, but the amount of water supply is smaller than that during washing and too much, and the water level detection means (not shown) is located at the bottom of the water tank 51 and in the rotating drum 52. Water supply will be performed so that the water level will not reach.

  Note that lint such as lint washed away from the inside of the circulation air passage route side discharge port 77 and the bent connection portion 75 is removed from foreign matter when passing through the drainage filter 57 from the drainage pipe 56 at the bottom of the water tank 51. Can be prevented from re-adhering.

  As described above, in the present embodiment, foreign matter such as lint that adheres to the intake port 65 and the bent connection portion 75, or adheres due to static electricity or moisture on the wall surface accumulates to block the pipe, and the circulating air flow rate is increased. This reduces the drying efficiency and prevents the problem that the drying time becomes longer.

(Embodiment 2)
FIG. 2 is a side sectional view of a drum type washing / drying machine according to a second embodiment of the present invention.

  In FIG. 2, the circulation ventilation path side discharge pipe 76 constitutes an extending portion 80 upward, and is connected to the circulation ventilation path 74 and the connection port 81 above the bent connection portion 75.

  Therefore, the circulating water flowing through the circulation air passage path side discharge pipe 76 during the drying process flows downward from the bent connection portion 75 as indicated by an arrow E from the upper side of the bent connection portion 75. Other configurations are the same as those of the first embodiment.

  According to the present embodiment configured as described above, the bellows-like bent connection portion 75 made of a rubber material or the like has a high coefficient of friction, and lint or the like adheres easily. The attached lint is washed away.

  In addition, by using a circulation pump that is frequently used to improve the functions of conventional drum-type washing machines when washing and rinsing, it prevents lint accumulation in the circulation air passage during the drying process, so that water is supplied. Further, it is possible to prevent a decrease in drying efficiency without incurring a cost increase such as newly increasing a circulation pump.

  As described above, the drum-type washing and drying machine according to the present invention can prevent a decrease in drying efficiency by preventing lint from adhering to the wall surface to the circulation air flow path. It is useful in.

51 Water tank 52 Rotating drum 61 Control device (control means)
62 Blower means (blower)
65 Inlet port 66 Circulating water supply route 67 Circulating pump 70 Switching valve 72 Discharge port on the rotating drum 73 Filter 74 Circulating air passage 75 Bending connection portion 77 Circulating air passage side discharge port

Claims (1)

A rotary drum that is provided in the water tank and is driven to rotate by containing laundry, and a control for controlling each process of washing, rinsing, dehydration, and drying by controlling water supply, drainage, and rotation of the rotary drum to the water tank. Means, a circulating water supply path for circulating water with a circulation pump at the time of washing and rinsing, a circulation blowing path having a blowing means for circulating the air in the water tank at the time of drying, and collecting foreign matter in the middle of the circulation blowing path And a suction port for sucking air supplied to the water tank through the circulation air passage from the water tank, and the circulation water supply path includes a rotary drum side discharge port for discharging the circulating water into the rotary drum, and A switching valve for branching to a circulation blower path side discharge port near the intake port and discharging the circulating water from either the rotary drum side discharge port or the circulation blower path side discharge port A provided a drum type washing and drying machine,
The circulation air passage side discharge port is a position between the filter and the bent connection portion constituting the connection portion between the water tank and the circulation air passage, and the circulation air passage above the bent connection portion. Drum-type washing and drying machine connected to .

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