JP2008259665A - Drum type washing/drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing/drying machine capable of preventing adhesion of lint to the laundry and preventing increase of the quantity of water to be used as well. <P>SOLUTION: By operating a circulation pump 34, water in a drum 3 is pumped out of the drum 3 and water stored between a water tub 2 and the drum 3 is returned into the drum 3 to circulate. At the time, water flows through a drain duct 28, a first circulation hose 7, a second circulation hose 8 and a third circulation hose 58, and is sprayed from a washing nozzle 9 into the drum 3 to return to the drum 3. Part of the water flowing through the second circulation hose 8 is branched at a first joint 35 to flow into a washing hose 60, flowing through second and third washing hoses 61 and 62, to be sprayed from washing nozzles 11A and 11B toward a filter 51. The filter 51 is set in the vicinity of a drain 53 disposed in the lower part of the water tub 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drum type washing and drying machine.

  Conventional drum-type washing / drying machines are disclosed in JP-A-8-243292 (hereinafter referred to as “Patent Document 1”) and JP-A-2004-261324 (hereinafter referred to as “Patent Document 2”). Some have been disclosed.

  The drum-type washing and drying machine of Patent Document 1 is a water tank, a cylindrical drum with a bottom having a through-hole on a peripheral wall, and a dry air circulation passage communicating with a space in the water tank. And.

  Air in the water tank flows into the drying air circulation passage from one end during the drying process. Then, the air heated in the dry air circulation passage is blown out again from the other end of the dry air circulation passage into the water tank.

  In the drum-type washing and drying machine of one embodiment of Patent Document 1, a filter is provided in the water tank, and air passing through the filter flows into the dry air circulation passage and adheres to the filter. The yarn waste is washed away with a water flow at the time of washing (see [FIG. 3] of Patent Document 1).

  However, in the case of the above embodiment, the yarn waste separated from the filter enters the drum through the through hole in the peripheral wall of the drum, so that there is a problem that the yarn waste adheres to the laundry.

  Further, in the drum type washing and drying machine of another example of Patent Document 1 described above, a filter is disposed so that the water supplied to the water tank hits, and yarn waste is removed from the filter. Since the waste enters the drum together with the water, the yarn waste adheres to the laundry (see [FIG. 4] in Patent Document 1).

  Moreover, in the drum type washing and drying machine of the other example of the above-mentioned Patent Document 1, a filter is arranged so that water supplied to the water tank hits, and the water flows into the water tank. Since the yarn waste separated from the filter enters the drum through the through-hole in the peripheral wall of the drum, the yarn waste eventually adheres to the laundry (see [FIG. 5] in Patent Document 1).

  Further, the drum type washing and drying machine of another example of the above-mentioned Patent Document 1 includes a circulation pump that sucks water in the water tank, and a filter is arranged so that the water discharged from the circulation pump is hit. Although the waste is removed, the yarn waste enters the drum together with the water, so that the yarn waste cannot be prevented from adhering to the laundry (see [FIG. 6] in Patent Document 1).

  Further, the drum type washing and drying machine of another example of the above-mentioned Patent Document 1 includes a circulation pump that sucks water in the water tank, and a filter is disposed so that the water discharged from the circulation pump is hit. However, since the yarn waste separated from the filter enters the drum through the through-hole in the peripheral wall of the drum, the problem of the yarn waste adhering to the laundry is not solved (see FIG. 7], [FIG. 8]).

  In addition, any of the drum type washing and drying machines of the above-mentioned Patent Document 1 does not have means for removing lint from the filter during the drying process.

  On the other hand, the drum-type washing / drying machine of Patent Document 2 includes a casing, a water tank disposed in the casing, a drum rotatably disposed in the water tank, and heating supplied to the water tank during the drying process. An exhaust air passage for exhausting air out of the water tank and a filter installed in the exhaust air passage are provided.

  In the drum-type washing and drying machine disclosed in Patent Document 2, for example, when power is turned on, water from a tap is introduced into the housing and sprayed onto the filter to wash away the lint attached to the filter.

However, the drum-type washing and drying machine of Patent Document 2 has a problem that the amount of water used increases because water is introduced into the housing from the tap to remove lint from the filter.
JP-A-8-243292 JP 2004-261324 A

  Accordingly, an object of the present invention is to provide a drum type laundry dryer that can prevent lint from adhering to the laundry and also prevent an increase in the amount of water used.

In order to solve the above problems, the drum-type washing and drying machine of the present invention is
A tank,
A drum rotatably disposed in the aquarium and containing laundry;
A drying system provided at the lower part of the water tank, having a heat exchanger for dehumidification and a blower;
A circulation path for returning the water from the inside of the drum to the outside of the drum and collecting between the water tank and the drum and returning it to the inside of the drum;
A washing nozzle provided at the downstream end of the circulation path for injecting water into the drum;
A filter disposed on a path through which the air sucked by the blower passes,
A first branch path branched from the circulation path and extending toward the filter;
A cleaning nozzle that is provided at the downstream end of the first branch path and injects water toward the filter;
A circulation pump provided in the circulation path for circulating water;
The said filter is installed in the drain outlet vicinity provided in the lower part of the said water tank, It is characterized by the above-mentioned.

  According to the drum type washing and drying machine of the above embodiment, the waste nozzles are separated from the filter by the cleaning nozzle spraying water toward the filter. At this time, since the filter is located in the vicinity of the drain, the yarn waste separated from the filter can be discharged from the drain to the outside of the water tank.

  Accordingly, it is possible to prevent the lint separated from the filter from adhering to the laundry in the drum so as not to go to the drum.

  Further, since the water supplied to the washing nozzle is water in the circulation path, that is, washing water used in the washing process and the rinsing process, it is not necessary to receive water from the water supply only for cleaning the filter. .

  Therefore, it is possible to prevent an increase in the amount of water used in the drum type washing and drying machine.

The drum type washing and drying machine of one embodiment
A second branch path branched from the circulation path and extending toward the dehumidifying heat exchanger;
A cooling nozzle that is provided at an end portion on the downstream side of the branch path and that injects water toward the heat exchanger for dehumidification.

  According to the drum type washing and drying machine of the above embodiment, since the cooling nozzle injects water toward the heat exchanger for dehumidification, for example, lint attached to the heat exchanger for dehumidification is washed away, and heat exchange for dehumidification is performed. The vessel can be cleaned.

In the drum-type washing and drying machine of one embodiment,
The filter is installed so that at least a part thereof is lower than the lowest end of the drum.

  According to the drum type washing / drying machine of the above embodiment, since at least a part of the filter is lower than the lowermost end of the drum, it is possible to enhance the effect of preventing the lint separated from the filter from moving toward the drum.

In the drum-type washing and drying machine of one embodiment,
There are a plurality of the first branch paths.

  According to the drum type washing and drying machine of the above embodiment, since there are a plurality of the first branch paths, a cleaning nozzle is provided at the downstream end of each first branch path, and each cleaning nozzle is directed toward the filter. , It is possible to shorten the time for removing the lint adhering to the filter.

In the drum-type washing and drying machine of one embodiment,
The washing nozzle jets water toward the downstream surface of the filter.

  According to the drum type washing / drying machine of the above-mentioned embodiment, lint adheres to the upstream surface of the filter. In such a state, since the nozzle jets water toward the downstream surface of the filter, the lint is easily separated from the filter, so that lint attached to the filter can be removed in a short time. it can.

The drum type washing and drying machine of one embodiment
The flow control valve provided in the said 1st branch path is provided.

  According to the drum type washing / drying machine of the above embodiment, since the flow rate adjusting valve is provided in the first branch path, the amount of water supplied to the cleaning nozzle is adjusted by the flow rate adjusting valve, so that it adheres to the filter. The effect of removing lint can be increased.

  Further, by increasing the effect of removing the yarn waste, the time required for removing the yarn waste is shortened, and an energy saving effect is obtained.

The drum type washing and drying machine of one embodiment
A switching unit provided at a portion where the first branch path branches from the circulation path;
And a control device that controls the switching valve according to a washing process, a rinsing process, and a drying process.

  According to the drum type washing / drying machine of the above embodiment, the control device controls the switching valve according to the washing process, the rinsing process, and the drying process, so that the washing is performed according to each process of the selected operation course. Water can be supplied to the nozzle alone, or the washing nozzle alone, or both the washing nozzle and the washing nozzle.

  As a result, the water supply suitable for each step of the selected operation course can be realized, so that the operation time and power consumption can be suppressed.

In the drum-type washing and drying machine of one embodiment,
A drainage path for draining the water in the tank,
A drain valve provided in the drainage path and controlled by the control device;
The control device closes the drain valve for a predetermined time immediately before the end of the drying process, stores a predetermined amount of water in the water tank, controls the switching valve, and injects water from the cleaning nozzle to the filter. Only do.

  According to the drum-type washing and drying machine of the above embodiment, the control device closes the drain valve for a predetermined time immediately before the end of the drying process, stores a predetermined amount of water in the water tank, controls the switching valve, and performs cleaning. Since only water is sprayed from the nozzle to the filter, the lint attached to the filter can be removed without wetting the laundry.

  Needless to say, while the washing nozzle is spraying water, the washing nozzle does not spray water.

  According to the drum type washing / drying machine of the present invention, since the filter is located in the vicinity of the drainage port, the yarn waste separated from the filter can be discharged out of the water tank from the drainage port. It can prevent sticking to the laundry in a drum so that it may not go to a drum.

  In addition, since the water supplied to the cleaning nozzle is water in the circulation path, it is not necessary to receive water supply from the water supply only for cleaning the filter, so that an increase in the amount of water used can be prevented.

  Hereinafter, the drum type washing and drying machine of the present invention will be described in detail with reference to the illustrated embodiments.

(First embodiment)
FIG. 1 is a schematic cross-sectional view of the drum type washing and drying machine according to the first embodiment of the present invention.

  The drum-type washing and drying machine includes an outer box 1, a bottomed cylindrical water tank 2 disposed in the outer box 1, and a bottomed cylindrical shape that is rotatably disposed in the water tank 2 and accommodates laundry. Drum 3, a drum motor 4 that is attached to the rear of the water tub 2 and rotationally drives the drum 3, a drying system 5 for drying the laundry, and two dampers 6 that elastically support the rear of the water tub 2, It has.

  An outer box opening 12 is provided on the front surface of the outer box 1. The outer box opening 12 is opened and closed by a door 13 rotatably attached to the outer box 1. Further, most of the front portion of the outer box 1 is composed of a front panel 14, and the lower part of the outer box 1 is composed of a base 15. Further, a detergent case 16 for storing detergent, bleach and softener and an operation part 17 having operation keys and a display part are provided on the upper part of the outer box 1. A control device 18 for controlling the operation of the drum type washing and drying machine is disposed on the back side of the operation unit 17 (inside the outer box 1).

  In the detergent case 16, tap water supplied to the tap water supply port 19 flows in via the tap water supply channel 20, or bath water supplied to the bath water supply port 21 is supplied to the bath water supply water. Or flows in through the path 22. The tap water supply channel 20 is provided with a water supply valve 23. The bath water supply path 22 is provided with a bath water pump 24.

  A water tank opening 25 is provided on the front surface of the water tank 2. A packing 26 made of an elastic material such as rubber or soft resin is fixed to the opening edge of the water tank opening 25. As a result, when the door 13 is closed, the door 13 comes into close contact with the packing 26, so that the liquid in the water tank 2 can be prevented from leaking out of the water tank 2. Further, the water tank 2 is disposed sideways so that the water tank opening 25 faces the outer box opening 12. More specifically, the central axis of the water tank 2 is inclined so as to form an angle of 5 ° to 30 ° with respect to the horizontal direction. Here, the central axis passes through the position of the center of gravity in a cross section obtained by cutting the water tank 2 along a plane perpendicular to the rotation axis of the drum 3. Further, a water supply duct 27 for supplying washing water (tap water containing detergent or mere tap water) to the water tank 2 is connected to the upper part of the water tank 2. On the other hand, a drain port 53 for draining the washing liquid in the water tank 2 to the outside is provided in the lower part of the water tank 2.

  A drainage duct 28 is connected to the drainage port 53. The liquid flowing through the drainage duct 28 flows into the first circulation hose 7 or the drainage hose 30 through the filter case 29. A drainage filter 31 is installed in the filter case 29. The drain duct 28 is an example of a circulation path and a drain path. The first circulation hose 7 is an example of a circulation path. The drain hose 30 is an example of a drain path.

  A drain valve 33 is attached to the end of the drain hose 30 near the filter case 29. The drain valve 33 is opened and closed by a drain motor 32.

  The lower end portion of the first circulation hose 7 is connected to the discharge port of the circulation pump 34 disposed behind the filter case 29. On the other hand, the upper end of the first circulation hose 7 is connected to a flexible first joint 35.

  The drainage filter 31 captures foreign matters such as lint in the liquid that exits the drainage duct 28 and travels toward the first circulation hose 7 or the drainage hose 30. The drainage filter 31 can be cleaned and replaced by the user. More specifically, the user removes the drain filter 31 from the filter case 29 by opening a filter maintenance cover (not shown) provided on the front panel 14, and cleans the drain filter 31 or drains the filter 31. Can be exchanged.

  The first joint 35 has a first connection port on the upstream side, and has second and third connection ports on the downstream side. The upper end of the first circulation hose 7 is connected to the first connection port. The lower end of the second circulation hose 8 is connected to the second connection port. One end of the first cleaning hose 60 is connected to the third connection port. The first cleaning hose 60 is provided with a flow rate adjustment valve 55. Thereby, the amount of water sprayed from the cleaning nozzles 11A and 11B can be adjusted. The first cleaning hose 60 is an example of a first branch path.

  The liquid flowing through the second circulation hose 8 branches into two at the second joint 52, one liquid reaches the washing nozzle 9 via the third circulation hose 58, and the other liquid enters the cooling hose 59. The cooling nozzle 10 is reached. The cooling nozzle 10 can be supplied with tap water from a tap water supply channel 20 through a water channel (not shown). More specifically, the water channel is provided with a valve for controlling the supply of tap water to the cooling nozzle 10. The cooling hose 59 is an example of a second branch path.

  The liquid flowing through the first washing hose 60 branches into two at the third joint 54, one liquid reaches the washing nozzle 11A via the second washing hose 61, and the other liquid is the third washing hose. The cleaning nozzle 11B is reached via 62. The second and third cleaning hoses 61 and 62 are examples of the first branch path.

  The rotation axis of the drum 3 is inclined so as to form an angle of 5 ° to 30 ° with respect to the horizontal direction. The rotation axis of the drum 3 is parallel to the central axis of the water tank 2. A drum opening 36 facing the outer box opening 12 and the water tank opening 25 is provided on the front surface of the drum 3. The drum opening 36 has a larger diameter than the water tank opening 25. A plurality of small holes 37 are provided in the entire peripheral wall of the drum 3. The small holes 37 are for circulating wash water, dry air, and the like between the space between the water tank 2 and the drum 3 and the space in the drum 3. Further, a baffle 38 that protrudes inward in the radial direction is provided on the inner wall surface of the drum 3. The baffles 38 are arranged at three locations in the circumferential direction, for example, at intervals of 120 °, and repeat the lifting and dropping of the laundry as the drum 3 rotates. Further, a liquid balancer 39 is provided to surround the drum opening 36 of the drum 3 from the outside, and an imbalance that is likely to occur due to the bias of the laundry, the washing liquid, and the like when the drum 3 rotates is caused inside the liquid balancer 39. The movement is canceled by the movement of the sealed liquid. In FIG. 1, only six small holes 37 are shown, and the other small holes 37 are not shown.

  The drying system 5 includes a fan unit 40, a dehumidifying heat exchanger 41, a hot air unit 42 (see FIG. 2), a heat exchanger cover 46, and a filter 51.

  The fan unit 40 is attached to the lower part of the rear surface of the water tank 2. The fan unit 40 includes a fan case 43, a blower fan 44 accommodated in the fan case 43, and a fan motor 45 that rotationally drives the blower fan 44. The fan motor 45 is directly connected to the blower fan 44, and rotates the blower fan 44 by a direct drive structure.

  The dehumidifying heat exchanger 41 is disposed in a region between the lower part of the water tank 2 and the lower part of the drum 3. Further, the water sprayed by the cooling nozzle 10 falls on the dehumidifying heat exchanger 41 when the drying system 5 is operating, that is, during the drying process. Thereby, the heat exchanger 41 for dehumidification is cooled by the water, and the moisture in the air toward the fan unit 40 can be condensed. During the drying step, tap water from the tap water supply channel 20 is supplied to the cooling nozzle 10 as cooling water.

  The heat exchanger cover 46 is attached to the inner wall of the water tank 2 and covers the rear part (the part on the fan unit 40 side) of the heat exchanger 41 for dehumidification. The heat exchanger cover 46 guides the air containing moisture evaporated from the laundry along the heat exchanger 41 for dehumidification into the fan case 43 of the fan unit 40. The air from which the yarn waste has been removed by the filter 51 flows into the fan case 43. In other words, the filter 51 captures yarn waste in the air that is guided by the heat exchanger cover 46 and tries to enter the fan case 43.

  FIG. 2 shows a schematic cross-sectional view of the drum type washing / drying machine taken along a plane different from that in FIG. FIG. 3 is a schematic sectional view taken along line III-III in FIG.

  As shown in FIGS. 2 and 3, the hot air unit 42 includes a drying heater 47, a drying heater case 48 that accommodates most of the drying heater 47, and air heated by the drying heater 47. And a blower case 49 for guiding the air into the drum 3.

  The drying heater 47 is installed between the lower part of the water tank 2 and the lower part of the drum 3 so as to be located on the side of the dehumidifying heat exchanger 41 and heats the blown air from the fan unit 40.

  The outlet 50 provided at the upper end of the blower case 49 is located between the lower edge of the water tank opening 25 and the lower edge of the drum opening 36. Thereby, the air guided by the blower case 49 is blown out from the blower outlet 50 into the drum 3.

  In FIG. 3, C <b> 1 is the center of the water tank opening 25, and C <b> 2 is the center of the drum opening 36. In FIG. 3, the drum motor 4 is not shown.

  FIG. 4 shows an enlarged schematic view of the fan unit 40 of FIG. 1 and its peripheral part.

  The filter 51 is disposed so as to face the suction port 63 of the fan case 43 and to be positioned in the vicinity of the drain port 53. Most of the filter 51 is located at a position lower than the point P which is the lowermost end of the drum 3.

  The cleaning nozzles 11 </ b> A and 11 </ b> B inject water toward the downstream surface of the filter 51. That is, the water sprayed from the cleaning nozzles 11A and 11B falls on the surface of the filter 51 opposite to the surface on which the lint is adhered.

  The water injection amount of the cleaning nozzles 11A and 11B is adjusted by the flow rate adjustment valve 55. The flow rate adjusting valve 55 is controlled by the control device 18.

  According to the drum type washing / drying machine having the above-described configuration, the circulation pump 34 is operated with the drain valve 33 being closed during the washing process or the rinsing process. Thereby, the circulation pump 34 sucks the washing water between the water tank 2 and the drum 3 and supplies the washing water to the first circulation hose 7. Then, the washing water exiting the first circulation hose 7 branches into two at the first joint 35 and flows into the second circulation hose 8 and the first washing hose 60.

  The washing water flowing into the second circulation hose 8 is branched into two at the second joint 52, and one washing water is jetted from the washing nozzle 9 into the drum 3, and the other washing water is cooled by the cooling nozzle 10. To the heat exchanger 41 for dehumidification. Thereby, since the washing water which came out of the drum 3 from the said small hole 37 returns in the drum 3, a washing process and a rinse process can be performed with little washing water. Further, foreign matter such as lint that has adhered to the dehumidifying heat exchanger 41 flows to the drain port 53, so that the dehumidifying heat exchanger 41 can be cleaned.

  The washing water flowing into the first washing hose 60 is branched into two at the third joint 54, one washing water is sprayed from the washing nozzle 11A toward the filter 51, and the other washing water is the washing nozzle 11B. From the nozzle toward the filter 51. Thereby, the filter 51 can be cleaned. That is, yarn waste can be removed from the filter 51.

  Further, since the filter 51 is installed in the vicinity of the drainage port 53, when the yarn waste adhering to the filter 51 is removed by the cleaning nozzles 11A and 11B, the yarn waste comes out of the water tank 2 from the drainage port 53.

  As a result, the waste thread flows together with the washing water into the drainage duct 28 and is captured by the drainage filter 31, so that the waste thread can be prevented from adhering to the laundry.

  Most of the filter 51 is located at a position lower than the point P, which is the lowest end of the drum 3, so that the yarn waste separated from the filter 51 is difficult to return into the drum 3, and the yarn waste easily flows to the drain port 53.

  Since the water supplied to the washing nozzles 11A and 11B is circulating water, that is, washing water used in the washing process and the rinsing process, it is not necessary to receive water from the water supply only for cleaning the filter 51.

  Therefore, it is possible to prevent an increase in the amount of water used in the drum type washing and drying machine.

  Since the cleaning nozzles 11A and 11B are attached to the lower part of the water tank 2, the distance from the circulation pump 34 below the water tank 2 to the cleaning nozzles 11A and 11B is reduced.

  Therefore, the hose for connecting the circulation pump 34 and the washing nozzles 11A and 11B (the first washing hose 60, etc.) can be shortened, and the product having a low ability of the circulation pump 34 can be used to reduce the product cost. it can.

  Since the cleaning of the filter 51 is performed by the two cleaning nozzles 11A and 11B, the time for removing the lint attached to the filter 51 can be shortened.

  Since the washing nozzles 11A and 11B inject washing water toward the surface of the filter 51 opposite to the surface on which the yarn waste is attached, the waste yarn attached to the filter 51 can be removed in a short time.

  When the amount of laundry in the drum 3 is relatively large, it is possible to increase the effect of removing the lint adhering to the filter 51 by increasing the time during which the washing nozzles 11A and 11B spray the washing water.

  When the amount of laundry in the drum 3 is relatively large, the yarn waste can be removed in a short time by increasing the amount of water (L / min) of the washing nozzles 11A and 11B.

  When the amount of laundry in the drum 3 is relatively small, the operation time is shortened and the energy is saved by shortening the time during which the washing nozzles 11A and 11B spray the washing water.

  When the amount of laundry in the drum 3 is relatively small, the amount of water returned to the drum 3 can be increased by reducing the amount of water sprayed (L / min) from the washing nozzles 11A and 11B. Increases performance and rinsing performance.

  When the hygroscopicity of the cloth in the laundry in the drum 3 is relatively high, the cleaning nozzles 11A and 11B increase the effect of removing the lint attached to the filter 51 by increasing the time during which the washing water is sprayed. be able to.

  Further, when the hygroscopicity of the cloth in the laundry in the drum 3 is relatively high, the yarn waste adhering to the filter 51 can be removed in a short time by increasing the amount of water (L / min) of the washing nozzles 11A and 11B. Can be removed.

  When the hygroscopicity of the cloth in the laundry in the drum 3 is relatively low, the operation time is shortened and energy is saved by shortening the time during which the washing nozzles 11A and 11B spray the washing water.

  Further, when the hygroscopicity of the cloth in the laundry in the drum 3 is relatively low, the amount of water returned into the drum 3 can be increased by reducing the amount of water sprayed (L / min) from the washing nozzle 11. Increases washing and rinsing performance.

  Since the first washing hose 60 is provided with the flow rate adjusting valve 55, the amount of washing water sprayed by the washing nozzles 11A and 11B can be adjusted, so that the lint attached to the filter 51 is removed. It can increase the effect, shortening the operation time and saving energy.

  When the user operates the operation unit 17 and selects one driving course from a plurality of driving courses, the timing of spraying from the cleaning nozzles 11A and 11B toward the filter 51 is varied according to the selected driving course. By this, it is possible to inject only when the filter 51 is not immersed in water, and power consumption can be suppressed.

  Here, the time when the filter 51 is not immersed in water is when the circulation pump 34 is operated and the washing water is circulating.

(Second Embodiment)
FIG. 5 shows a schematic cross-sectional view of a drum type washing / drying machine according to a second embodiment of the present invention. In FIG. 5, the same components as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals as those of the components in FIG. In the following description, the same components as those in the first embodiment will be described with reference numerals used in the description of the first embodiment.

  The drum type washing and drying machine of the second embodiment is different from the first embodiment only in that it includes a first joint 135 provided with a switching valve 56.

  The switching valve 56 allows the washing water from the first circulation hose 7 to flow into the second circulation hose 8 and the first washing hose 60, or allows the washing water from the first circulation hose 7 to flow only into the second circulation hose 8. Or the washing water from the first circulation hose 7 can be made only to the first washing hose 60. The switching valve 56 is controlled according to the washing process, the rinsing process, and the drying process. The control device 18 performs such control over the switching valve 56.

  Therefore, the switching valve 56 can spray the washing toward the filter 51 from the washing nozzles 11 </ b> A and 11 </ b> B without applying circulating water to the laundry even during drainage or the drying process.

  When the user operates the operation unit 17 and selects one driving course from a plurality of driving courses, the switching valve 56 is controlled in accordance with the selected driving course, so that each process of the selected driving course is performed. Thus, the circulating water can be sprayed only in the drum 3, or only in the filter 51, or in both the drum 3 and the filter 51, and the operation time and power consumption can be suppressed.

  During the water supply in the washing process and the rinsing process, until the filter 51 is immersed in water, the switching valve 56 is controlled and sprayed only from the cleaning nozzles 11A and 11B toward the filter 51. After the filter 51 is immersed in water, By again controlling the switching valve 56 and injecting only the drum 3, the washing performance and the rinsing performance are improved.

  When the water level drops from the filter 51 during draining in the washing process and the rinsing process, the drain valve 33 is closed for a certain period of time, and the switching valve 56 is controlled to inject only from the washing nozzles 11A and 11B toward the filter 51. , Can reduce power consumption.

  Immediately before the end of the drying process, the drain valve 33 is closed for a certain period of time, the cooling water is accumulated below the lower part of the filter 51, the switching valve 56 is controlled, and it is injected only from the washing nozzles 11A, 11B toward the filter 51. The lint attached to the filter 51 can be removed without wetting the laundry.

  In the second embodiment, the filter 51 was cleaned using the water stored in the water tank 2 immediately before the end of the drying process, but an auxiliary tank communicating with the space in the water tank 2 was provided, and the washing process, In the latter half of the rinsing process or the dehydrating process, water drained outside the water tank 2 may be stored in an auxiliary tank, and the filter 51 may be cleaned in the drying process using the water stored in the auxiliary tank.

  Needless to say, when the filter 51 is cleaned in the drying process using the water stored in the auxiliary tank, the switching valve 56 is controlled so that the water is not supplied to the washing nozzle 9.

(Third embodiment)
FIG. 6 shows a schematic cross-sectional view of a drum type washing / drying machine according to a third embodiment of the present invention. In FIG. 6, the same components as those of the first embodiment shown in FIG. 2 are denoted by the same reference numerals as those of the components in FIG. In the following description, the same components as those in the first embodiment will be described with reference numerals used in the description of the first embodiment.

  The drum type washing and drying machine of the third embodiment is different from the first embodiment only in that a temperature detection sensor 57 is provided.

  The temperature detection sensor 57 is provided in the vicinity of the air outlet 50, which is the front portion of the blower case 49, and detects the temperature of the air flowing through the blower case 49.

  By providing a temperature detection sensor 57 in the vicinity of the air outlet 50, which is the front part of the blower case 49, when it is detected that the temperature of the air flowing through the blower case 49 is high, the lint attached to the filter 51 When it is detected that the temperature of the air flowing through the blower case 49 is low, it can be determined that the amount of yarn waste adhering to the filter 51 is small.

  When the temperature detection sensor 57 determines that the temperature is high, since the amount of yarn waste adhering to the filter 51 is large, the cleaning nozzles 11 </ b> A and 11 </ b> B can increase the time for spraying water toward the filter 51. The effect of removing the lint attached to the filter 51 can be increased.

  When the temperature detection sensor 57 determines that the temperature is low, the amount of yarn waste adhering to the filter 51 is small, so that the time for the cleaning nozzles 11A and 11B to spray water toward the filter 51 is shortened. , Shortening the operation time and saving energy.

  When the temperature detection sensor 57 determines that the temperature is high, the amount of yarn waste adhering to the filter 51 is large, so the amount of water (L / min) that the cleaning nozzles 11A and 11B spray toward the filter 51 is large. By doing so, the lint attached to the filter 51 can be removed in a short time.

  When the temperature detection sensor 57 determines that the temperature is low, since the amount of yarn waste adhering to the filter 51 is small, the amount of water (L / min) that the cleaning nozzles 11A and 11B inject water toward the filter 51 By reducing the amount of water, the amount of water returned into the drum 3 can be increased, and the washing performance and the rinsing performance are improved.

  You may provide the filter washing | cleaning course which can be selected arbitrarily in the drum type washing-drying machine of the said 1st-3rd embodiment.

  When the drum-type washing and drying machine of the first to third embodiments is provided with a filter cleaning course that can be arbitrarily selected, when the laundry that is likely to have lint is dried or used for a long time, The lint that cannot be completely removed by cleaning the filter 51 in the normal operation course can be removed.

FIG. 1 is a schematic cross-sectional view of a drum type washing / drying machine according to a first embodiment of the present invention. FIG. 2 is another schematic cross-sectional view of the drum type washing and drying machine of the first embodiment. 3 is a schematic cross-sectional view taken along the line III-III in FIG. FIG. 4 is an enlarged schematic view of the main part of FIG. FIG. 5 is a schematic cross-sectional view of a drum type washing / drying machine according to a second embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of a drum type washing / drying machine according to a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outer box 2 Water tank 3 Drum 4 Drum motor 5 Drying system 6 Damper 7 First circulation hose 8 Second circulation hose 9 Washing nozzle 10 Cooling nozzle 11 Washing nozzle 12 Outer box opening 13 Door 14 Front panel 15 Base 16 Detergent case Reference Signs List 17 Operating Unit 18 Control Device 19 Tap Water Supply Port 20 Tap Water Supply Channel 21 Bath Water Supply Port 22 Bath Water Supply Channel 23 Water Supply Valve 24 Bath Water Pump 25 Water Tank Opening 26 Packing 27 Water Supply Duct 28 Drain Duct 29 Filter case 30 Drain hose 31 Drain filter 32 Drain motor 33 Drain valve 34 Circulation pumps 35 and 135 First joint 36 Drum opening 37 Small hole 38 Baffle 39 Liquid balancer 40 Fan unit 41 Heat exchanger 42 for dehumidification Hot air unit 43 Fan Case 44 Blower 45 Fan motor 46 Heat exchanger cover 47 Drying heater 48 Drying heater case 49 Blower case 50 Air outlet 51 Filter 52 Second joint 53 Drain outlet 54 Third joint 55 Flow control valve 56 Switching valve 57 Temperature detection sensor 58 Third circulation hose 59 Cooling hose 60 First cleaning Hose 61 Second cleaning hose 62 Third cleaning hose 63 Suction port

Claims (8)

A tank,
A drum rotatably disposed in the aquarium and containing laundry;
A drying system provided at the lower part of the water tank, having a heat exchanger for dehumidification and a blower;
A circulation path for returning the water from the inside of the drum to the outside of the drum and collecting between the water tank and the drum and returning it to the inside of the drum;
A washing nozzle provided at the downstream end of the circulation path for injecting water into the drum;
A filter disposed on a path through which the air sucked by the blower passes,
A first branch path branched from the circulation path and extending toward the filter;
A cleaning nozzle that is provided at the downstream end of the first branch path and injects water toward the filter;
A circulation pump provided in the circulation path for circulating water;
The drum type washing and drying machine, wherein the filter is installed in the vicinity of a drain outlet provided in a lower portion of the water tank. In the drum type washing and drying machine according to claim 1,
A second branch path branched from the circulation path and extending toward the dehumidifying heat exchanger;
A drum-type washing and drying machine, comprising: a cooling nozzle that is provided at an end portion on the downstream side of the branch path and that jets water toward the heat exchanger for dehumidification. In the drum type washing and drying machine according to claim 1 or 2,
The drum type washing and drying machine, wherein the filter is installed so that at least a part thereof is lower than a lowermost end of the drum. In the drum type washing and drying machine according to any one of claims 1 to 3,
A drum type washing / drying machine comprising a plurality of the first branch paths. In the drum type washing and drying machine according to any one of claims 1 to 4,
The drum type washing and drying machine, wherein the washing nozzle sprays water toward the downstream surface of the filter. In the drum type washing and drying machine according to any one of claims 1 to 5,
A drum type washing and drying machine comprising a flow rate adjusting valve provided in the first branch path. In the drum type washing and drying machine according to any one of claims 1 to 6,
A switching unit provided at a portion where the first branch path branches from the circulation path;
A drum-type washing and drying machine comprising: a control device that controls the switching valve according to a washing process, a rinsing process, and a drying process. In the drum type washing and drying machine according to claim 7,
A drainage path for draining the water in the tank,
A drain valve provided in the drainage path and controlled by the control device;
The control device closes the drain valve for a predetermined time immediately before the end of the drying process, stores a predetermined amount of water in the water tank, controls the switching valve, and injects water from the cleaning nozzle to the filter. A drum-type washing and drying machine characterized by only performing.

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