JP2008110088A - Drum type washer / dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing machine for preventing leakage of malodor from a sewer. <P>SOLUTION: The drum type washing/drying machine has a second drain hose 55 in the machine, which drains water outside a casing 2 from a water tub 3 by opening a drain valve 18, and includes an air exhausting port 46 for partially exhausting circulation air, a lint filter 71 for catching lint contained in the circulation air, and an air introduction port 47 for introducing outside air. Since the drain hose is formed with a trap portion by being deformed into substantially U-shape in the casing, the trap portion 58 of the second drain hose 55 keeps the trapping function of an outside trap mechanism even if the lint is accumulated at the lint filter 71 and air pressure in the water tub 3 is increased, so that the leakage of the malodor from the sewer is prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum-type washing / drying machine that performs a washing, rinsing, dewatering, and drying processes by rotationally driving a rotating drum that contains laundry.

  Conventionally, this type of drum type washing and drying machine has a heat pump unit and dries laundry (for example, refer to Patent Document 1).

  8 to 10 show a drum-type washing and drying machine described in Patent Document 1. FIG.

  As shown in FIGS. 8 to 10, a cylindrical water tank 103 elastically supported by a plurality of suspensions 102 is disposed in the housing 101. A cylindrical inner tub 105 that accommodates clothes 104 is rotatably provided inside the water tub 103 and is rotated by a motor 106. The inner tank 105 has a plurality of dewatering holes 105 a communicating with the water tank 103. The water tank 103 functions as a laundry room during the washing operation and as a drying room during the drying operation. A drainage unit 107 is provided at the lower part of the water tank 103, and is configured to switch between storing and draining the washing water supplied into the water tank 103 by opening and closing the drain valve 108.

  On the front surface of the housing 101, there are provided an opening 101a through which clothes 104 are taken in and out, and a door 109 for opening and closing the opening. In addition, an air passage 110 including a water tank 103 is formed in the housing 101. The air passage 110 includes a water tank 103, an outward duct 111, a heat exchange unit 112, a return duct 113, and the like on the way. The air in the water tank 103 flows from the forward duct 111 to the heat exchanging part 112 by the air blowing means 114 provided in the middle of the air blowing path 110, and is then guided to the front of the water tank 103 by the return duct 113, and is supplied to the air supply port 115. It is configured to circulate again to the water tank 103.

  In the air passage 110, the heat exchanger 112 is provided with a heat absorber 116 on the upstream side and a radiator 117 on the downstream side. The heat absorber 116 and the heat radiator 117 include a compressor 118 that compresses the refrigerant, a throttle means 119 for reducing the pressure of the high-pressure refrigerant, and a pipe line 120 that connects the refrigerant so that the refrigerant circulates. It is composed.

  In the drying process, after moisture is removed from the wet clothes 104 in the inner tub 105, the hot and humid air that has passed through the water tub 103 and the forward duct 111 is cooled and dehumidified by being absorbed by the heat absorber 116. The heat dissipates to the heat radiator 117 and is heated by the heat radiator 117 to be converted into high temperature and low humidity air. The high-temperature, low-humidity air passes through the return duct 113 and is supplied from the air supply port 115 into the inner tub 105, contributing to the drying of the clothes 104 therein. In addition, the arrow A has shown the flow of the air, and the arrow B has shown the flow of the refrigerant | coolant which circulates through a pipe line.

  By the way, the amount of heat by which the air is heated by the radiator 117 is substantially equal to the sum of the amount of power consumed by the compressor 118 and the amount of heat absorbed by the heat absorber 116 from the high-temperature and high-humidity air. For this reason, the heat radiator 117 can obtain an output higher than the electric power input to the compressor 118 and can heat the air.

However, if the air in the air duct 110 is circulated as it is, the amount of heat of the entire air continues to be accumulated by the amount obtained by subtracting the amount of heat radiated naturally from the amount corresponding to the power consumption of the compressor 118. At the same time, the amount of heat of the refrigerant in the heat pump cycle continues to increase, the temperature and pressure of the refrigerant excessively increase, and the compressor 118 may eventually be overloaded. In order to avoid this, an intake port 121 for sucking outside air into the air passage 110 is provided in the forward duct 111, and when the drain valve 108 is opened, outside air is sucked from the intake port 121 and a water tank is drawn from the drain unit 107. The high-temperature and high-humidity air after passing through 103 is exhausted to dissipate heat to the outside of the air blowing path 110.
JP 2004-358029 A

  In such a conventional configuration, the drain hose 122 communicated with the drain valve 108 communicates with the sewer and drains the wash water into the sewer, and normally the sewage odor does not leak out. It is connected to a pipe communicating with sewage through a trap mechanism having a trap function. In this configuration, since the hot and humid air after passing through the water tank 103 is exhausted from the drainage unit 107 during the drying process, the water accumulated in the trap mechanism is blown away and washed away by the pressure of the exhaust. The trap mechanism does not have a trap function, and the sewage odor may leak out.

  In order to achieve the above object, a drum-type washing / drying machine according to the present invention includes a rotating drum that stores laundry and is rotationally driven with a horizontal direction or an inclination direction as a rotation axis, and the rotating drum includes the rotating drum. A water tank that is swingably supported in the housing, a drum drive motor that is fixed to the water tank and that rotationally drives the rotary drum, and a water supply means that controls water supply to the water tank by opening and closing the water tank. A drainage means for controlling the drainage of the washing water in the aquarium, a drainage hose communicating with the drainage means for draining the drainage from the aquarium out of the housing, a compressor for compressing the refrigerant, and a compressed refrigerant A heat pump in which a pipe is connected so that the refrigerant circulates between a radiator that radiates heat and a throttle means for reducing the pressure of the high-pressure refrigerant and a heat absorber that takes the heat from the reduced-pressure and low-pressure refrigerant. A circulating air passage that guides the air discharged from the rotating drum from the heat absorber to the radiator and then flows to the rotating drum, and one of the circulating air provided in the middle of the circulating air passage. An air discharge port for exhausting a part, a lint filter that is provided in the middle of the circulating air flow path and captures lint contained in the circulating air, and is provided in the middle of the circulating air flow path and outside air in the circulating air flow path The drainage hose has a trap portion formed by being deformed into a substantially U shape within the housing.

  As a result, even if lint accumulates on the lint filter and the air pressure in the water tank rises, the trap part of the drain hose leaks a part of the air circulating from the drain hose, and the pressure of the leaked air This prevents the water trapped in the external trap mechanism from being blown away and washed away, and the external trap mechanism does not have a trap function, so that odor from sewage can be prevented from leaking out. In addition, since the trap part is integrally formed with the drainage hose without using a separate complicated trap part, it is possible to form a trap part without fear of water leakage by an inexpensive means.

  In the drum type washing and drying machine of the present invention, even if lint accumulates on the lint filter and the air pressure in the water tank rises, the trap part of the drain hose leaks a part of the air circulating from the drain hose, and the leak The pressure of the discharged air prevents the water trapped in the external trap mechanism from being blown off and washed away, and the external trap mechanism does not have a trap function, so that odors from sewage leak out. The trap part can be integrated with the drainage hose without using complicated trap parts. Can be formed.

  A first aspect of the present invention is a rotary drum that accommodates laundry and is rotationally driven with a horizontal direction or an inclination direction as a rotation axis, and a water tub that rotatably includes the rotary drum and is supported in a swingable manner in a housing And a drum drive motor fixed to the water tank for rotating the rotary drum, water supply means for controlling water supply to the water tank by opening and closing, and controlling drainage of washing water in the water tank by opening and closing A drainage means, a drainage hose communicating with the drainage means and discharging the drainage from the water tank to the outside of the housing, a compressor for compressing the refrigerant, a radiator for dissipating the heat of the compressed refrigerant, and the pressure of the high-pressure refrigerant A heat pump unit connected by a pipe line so that the refrigerant circulates through a throttle means for reducing the pressure and a heat absorber in which the reduced pressure and low pressure refrigerant takes heat from the surroundings; A circulating air passage that guides the discharged air from the heat absorber to the radiator and then leads to the rotating drum; an air outlet that is provided in the middle of the circulating air passage and exhausts a part of the circulating air; and A lint filter that is provided in the middle of the circulating air path and captures lint contained in the circulating air; and an air inlet that is provided in the middle of the circulating air path and introduces outside air into the circulating air path. The drainage hose is a drum-type washing and drying machine in which a trap portion is formed by deforming in a substantially U shape within the housing, and even if lint accumulates on the lint filter and the air pressure in the water tank increases, The trap part of the drain hose leaks a part of the air circulating from the drain hose, and the pressure of the leaked air blows away the water accumulated in the external trap mechanism. Since it prevents the external trap mechanism from having the trap function, it is possible to prevent the odor from the sewage from leaking out, and without using a separate complicated trap part, Since the trap part is integrally formed with the drainage hose, the trap part without fear of water leakage can be formed by inexpensive means.

  According to a second aspect of the invention, in particular, the drum-type washing and drying machine of the first aspect of the invention further includes a foreign matter collecting filter that collects foreign matters, lint, and the like mixed in the waste water, and the foreign matter collecting filter includes a drain means and a trap portion. The foreign matter such as toothpick or nail is caught on the trap part, and the problem that lint accumulates on the trap part and the drainage hose is clogged can be prevented.

  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 shows a configuration of a drum-type washing / drying machine 1 according to the first embodiment with an emphasis on the configuration of a drying function. 2 is a plan view around the foreign matter collecting filter of the drum type washing and drying machine, FIG. 3 is a front view around the foreign matter collecting filter of the drum type washing and drying machine, and FIG. 4 is a foreign matter of the drum type washing and drying machine. FIG. 5 is a cross-sectional view of the trap portion of the drum type washing and drying machine.

  In FIG. 1, a drum drive motor 4 is attached to the back surface of the water tank 3 containing the rotary drum 5, and the rotary shaft 17 of the rotary drum 5 supported by a bearing 16 provided in the water tank 3 is used as the drum drive motor 4. The water tank unit 10 is configured so as to be driven by rotation. The water tank unit 10 is supported by a suspension structure in the housing 2 at an inclination angle in which the rotation axis of the rotary drum 5 is upward on the front side. A water supply valve (water supply means) 18 is attached to the housing 2, and a water supply hose 22 communicating with the water tank 3 is connected to the water supply valve 18 via a detergent case (not shown). By opening and closing the water supply valve 18, the supply of tap water to the water tank 3 is controlled. A drain valve (drainage means) 19 is provided at the bottom of the water tank 3, and a bellows-like first in-machine drain hose 25 is connected to the drain valve 19. By opening and closing the drain valve 19, the drainage of the washing water in the water tank 3 is controlled.

  The water tank 3 and the rotating drum 5 are each opened on the front side, and by opening the door body 8 provided on the front surface of the housing 2, the laundry can be taken in and out from the laundry entrance 6 that opens to the front of the rotating drum 5. Can do. When the door body 8 is closed, the bellows 43 provided in the opening of the water tank 3 is in close contact with the inner surface of the door body 8, so that the water tank 3 becomes a watertight and airtight space, and each process of washing, rinsing, dehydration and drying is performed. When running, water and air will not leak to the outside.

  As shown in FIGS. 2 to 4, the first in-flight drain hose 25 includes a filter box 52 that is provided inside the front lower portion of the housing 2 and that detachably incorporates a foreign matter collecting filter 51 having a mesh filter 50. The filter box inlet 53 is connected to the filter box inlet 53 provided on the rear surface, and the filter box inlet 53 is positioned so that the drainage from the water tank 3 is sprinkled on the mesh filter 50, and the mesh filter 50 is included in the drainage. It captures and collects foreign objects (such as matchsticks, nails, coins, lint, etc.). Further, a filter box outlet 54 through which drainage that has passed through the mesh filter 50 flows out is provided on the lower side surface of the filter box 52. A bellows-shaped second in-machine drain hose 55 for allowing drainage to flow out of the drum-type washing / drying machine 1 is connected to the filter box outlet 54. The other end of the second in-machine drainage hose 55 is connected to a substantially cylindrical drainage joint (not shown) provided at the lower part of the side surface of the housing 2. The drainage hose (not shown) is connected to the other end of the drainage joint (not shown), and the drainage hose outside the machine is connected to the sewage through a trap mechanism (not shown) having a trap function. Is connected to a pipe communicating with

  The second in-machine drain hose 55 connected to the filter box outlet 54 on the lower side surface of the filter box 52 is formed in a substantially U shape and has a cross section along a circular arc shaped holder 56, and the outlet of the holder 56 By being held by a holding part 57 provided along the lower part of the second in-flight drain hose 55 at the lower end of the part, it is lowered from the filter box outlet 54 to one side, downward to the side, and then lifted upward. It is formed as follows. Thus, the trap portion 58 is formed by being deformed into a substantially U shape. The holder 56 is provided with a flange portion 59, and the flange portion is fixed by a screw 60, whereby the holder 56 is fixed to the bottom portion of the housing 2, and the second in-flight drain hose 55 is connected to the housing. 2 is held at the bottom.

  Thereafter, the second in-flight drain hose 55 is held by a restricting portion 61 provided at the lower portion of the housing 2 so as to be bent rearward and downward at a substantially right angle from the trap portion 58. As described above, this restricting portion is provided so that the second in-machine drain hose 55 is directed to the rear drain joint (not shown) after the trap portion 58 is reliably formed in a substantially U shape. It has been.

  FIG. 5 is a cross-sectional view of the U-shaped portion 56. The trap height C of the U-shaped portion 56 is set to 40 to 49 mm when the inner diameter D of the second in-machine drain hose 55 is 35 ± 3 mm.

  The heat pump unit 20 is disposed so as to be accommodated in a space formed in the lower part on the back side of the housing 2 by tilting the water tank unit 10 in the housing 2. The housing 2 has a limited volume so that the drum-type washing / drying machine 1 can be installed in an existing installation place where the area is limited, such as a waterproof pan, and supports the large aquarium unit 10 and it. When the components for the suspension structure, water supply, drainage, etc. are accommodated, the excess space is reduced, but the heat pump unit 20 can be arranged compactly without increasing the size of the housing 2. Yes.

  The heat pump unit 20 houses a compressor 27 (see FIG. 6), a heat absorber 28, and a heat radiator 29 in a unit case 21, and the unit case 21 communicates with the heat absorber 28 and is connected to an intake connection pipe 32. The exhaust connection pipe 33 is connected in communication with the radiator 29. On the bottom surface of the unit case 21 corresponding to the heat absorber 28, a water storage portion 34 that receives the condensed water dripped from the heat absorber 28 is formed, and the water stored in the water storage portion 34 passes through the dust filtration filter 35 and the stored water drain port 36. The water is drained by a drain pump (not shown).

  Each of the heat absorber 28 and the radiator 29 faces each other with a predetermined interval, and a space serving as an air flow path is formed between each other surface and the wall surface of the unit case 21. End portions of the heat sinks are held by a pair of side wall plates 37 so as to form an air flow path from the intake space on the side through the heat absorber 28 and the radiator 29 to the exhaust space on the radiator 29 side. It is accommodated in the unit case 21 as a heat dissipation unit. Note that the heat absorber 28 is inclined so that the upper part approaches the radiator 29, and the radiator 29 having the upper part inclined toward the heat absorber 28 face each other in an inclined state, thereby making the air flow path effective. Therefore, the heat pump unit 20 can be disposed in a limited space formed behind the water tank unit 10.

  The heat pump unit 20 and the water tank unit 10 having the above-described configuration are connected by an air duct shown in FIG. The water tank 3 has an intake port 11 formed on the back surface thereof and an exhaust port 12 formed on a side peripheral surface thereof. Heated air is blown between the intake port 11 and the exhaust connection pipe 33 of the heat pump unit 20. A moisture absorption air blow duct (circulation blow path) 14 connected with a duct (circulation blow path) 13 and provided with a blow fan (blower means) 15 between the exhaust port 12 and the intake connection pipe 32 of the heat pump unit 20. By connecting with, an air circulation path for drying clothes is formed.

  The rotating drum 5 is formed with a large number of through holes 9 on the side peripheral surface thereof so that water and air can freely flow between the rotating drum 5 and the water tank 3, and the bottom surface communicates with the intake port 11. 1 is provided, the heated air fed from the heat pump unit 20 via the heated air blowing duct 13 passes through the intake port 11 into the rotary drum 5 as shown by the arrow in FIG. It can be introduced from the bottom. Further, the heated air deprived of moisture from the clothes housed in the rotating drum 5 becomes hygroscopic air, and passes through the through holes 9 and the laundry entrance 6 into the water tub 3 as shown by arrows in FIG. 12 passes through the filter unit 70, is exhausted toward the hygroscopic air blowing duct 14, and is exhausted toward the intake connection pipe 32 of the heat pump unit 20.

  The drum type washing / drying machine 1 having the above-described configuration is provided with a control instruction (not shown) by inputting selection of an operation course, time setting of each process, and the like from an operation / display unit provided in front of the housing 2. It is possible to freely select whether to perform a series of operations from washing to drying or to perform only the drying process by the control operation of each part by the control means.

  When washing is performed, the door 8 is opened, the laundry is put into the rotary drum 5, an instruction is input from the operation / display unit, and the operation is started. The detergent is supplied, and the drum driving motor 4 rotates the rotating drum 5 to start the washing process. The rotating drum 5 is laundered by repeating the action of tapping washing in which stirring blades 7 provided at a plurality of locations on the inner peripheral surface lift the laundry upward and drop it from above. After this washing process, washing is completed by executing a rinsing process and a dehydrating process. When an operation course for consistently performing from the washing process to the drying process is selected and inputted, the control means shifts to the drying process after the washing is completed when the washing is completed. In addition, when drying wet clothes, only the drying step can be performed.

  In the drying process, if the laundry or wet clothes (hereinafter collectively referred to as clothing) that have been dehydrated are accommodated in the rotating drum 5 and the drying process is performed, the rotating drum 5 rotates at a rotational speed corresponding to the drying process. Simultaneously with the rotation and stirring of the clothes, the heat pump unit 20 and the blower fan 15 are driven to start circulation of the drying air. In this drying process, the water tank 3 plays the same role as a drying chamber in a clothes dryer.

  FIG. 6 is a schematic diagram illustrating a configuration of a drying function of the drum type laundry dryer 1 according to the first embodiment. As shown in FIG. 6, in the heat pump unit 20, the refrigerant is compressed by the operation of the compressor 27, and this pressure causes the refrigerant to flow from the compressor 27 through the refrigerant pipe 41 to the radiator 29, the throttle means 42, and the heat absorber 28. The compressor 27 is circulated. The heat of the compressed refrigerant flows into the radiator 29 and is radiated to the air in contact with the fins provided in the refrigerant pipe 41 provided in the radiator 29, so that the blown air is heated and heated. Air is generated. Since the heated air is supplied from the exhaust space through the exhaust connection pipe 33 and the heated air blower duct 13 into the rotary drum 5 from the intake port 11, the heated air becomes moisture-absorbed air that has taken away moisture from the clothes to be stirred. It is discharged from the exhaust port 12.

  In order to prevent lint such as lint from being generated from the clothing as the clothing is dried, the lint filter 71 is disposed in order to prevent the lint from being deposited on the blower fan 15 and the blower duct and reducing the blower ability. A filter unit 70 in which a plurality of filters including the filter are integrated is provided. The hygroscopic air discharged from the exhaust port 12 enters the filter unit 70, and the lint contained in the hygroscopic air is captured by the lint filter 71 and is sent to the hygroscopic air blowing duct 14. The hygroscopic air blown into the hygroscopic air blowing duct 14 enters the intake space of the heat pump unit 20 through the intake connection pipe 32 and the hygroscopic air intake port 30, and the heat absorber 28 through which the low-pressure refrigerant is decompressed by the throttle means 42 flows. When passing through the sensible heat and latent heat are deprived and dehumidified, the dewed water generated by the dehumidification is dripped into the water storage section 34, and the dehumidified and dried air enters the radiator 29 and is heated again. Air circulation is formed. The water stored in the water reservoir 34 is discharged in the middle of the first in-machine drain hose 25 and drained to the outside by operating a drain pump (not shown) at regular intervals.

  The amount of heat by which the air is heated by the radiator 29 is approximately equal to the sum of the power consumption of the compressor 27 and the amount of heat absorbed from the hygroscopic air by the heat absorber 28, so that the radiator 29 is input to the compressor 27. It is possible to heat the air by obtaining an output higher than the power. However, when the air in the air circulation path is repeatedly circulated, the amount of heat of the entire air continues to be accumulated by subtracting the amount of heat radiated naturally from the amount corresponding to the power consumption of the compressor 27. At the same time, the amount of heat of the refrigerant in the heat pump cycle continues to increase, the temperature and pressure of the refrigerant excessively increase, and there is a possibility that the compressor 27 will be overloaded. In order to avoid this, as shown in FIG. 6, an exhaust filter 72 communicating with the air discharge port 46 for discharging a part of the circulating air from the air circulation path to the filter unit 70 and outside air are introduced into the air circulation path. An intake filter 73 communicating with the air inlet 47 is provided.

  In the heat pump unit 20, the temperature of the refrigerant flowing through the refrigerant pipe 41 is monitored, and when the temperature of the refrigerant becomes equal to or higher than a predetermined temperature, the intake valve 74 provided in the air introduction port 47 is opened and the air is introduced from the air introduction port 47. Introducing outside air into the circuit. Since the blower fan 15 is provided on the downstream side of the air introduction port 47, outside air flows into the air circulation path from the air introduction port 47 due to the negative pressure. Accompanying the introduction of the outside air, moisture absorption air in the air circulation path is exhausted to the outside from the air discharge port 46. Due to the introduction and discharge of the outside air from the air circulation path, the temperature of the circulation air decreases due to the cooling of the outside air flowing into the air circulation path and the discharge of the high-temperature air, so that the temperature of the refrigerant also decreases, and the refrigerant temperature exceeds The compressor 27 is prevented from falling into an overload state due to rising. When the refrigerant temperature falls to a predetermined temperature, the intake valve 74 is closed and the introduction of outside air from the air introduction port 47 is stopped, so there is no exhaust from the air discharge port 46, and the air blown into the air circulation path Heat is accumulated in the air, and air circulation with a high drying effect is performed. It is more preferable to provide an exhaust valve 48 at the air discharge port 46 so that the exhaust amount can be adjusted.

  Since the heat pump unit 20 is operated in the optimum state by the above control, the compressor 27 is intermittently operated in order to avoid an excessive increase in the refrigerant temperature so that the heating capacity is lowered and the drying time does not become long. Moreover, since the air exhaust port 46 exhausts the moisture-absorbed air after leaving the water tank 3 and contributing to drying, there is little energy loss, and external air introduced from the outside is also mixed into the blown air after leaving the water tank 3 Therefore, there is little influence on the drying effect by air discharge and introduction of outside air, and the drying time does not increase.

  The filter unit 70 communicating with the air discharge port 46 is provided with an exhaust filter 72 so that lint contained in the air in the air circulation path is not released to the outside. The filter unit 70 communicating with the air introduction port 47 is provided with an intake filter 73 so that dust contained in the outside air does not enter the air circulation path.

  In the above configuration, when the user forgets to clean the lint filter 71 and the exhaust filter 72 for some reason, lint accumulates on these filters in the drying process, and the deposition further continues. The air circulating in the air circulation path will not flow downstream from the lint filter 71 and will not be exhausted outside from the exhaust filter 72. Even if it will be in such a state, since the ventilation fan 15 is driven, air is sent one after another into the water tank 3, and the pressure in the water tank 3 rises.

  Further, during the drying process, the drain valve 19 is normally closed, but in the course of the drying process, the drain valve 19 is opened at a predetermined interval for a predetermined time in order to drain the water accumulated in the water tank 3. I do. At that time, as described above, in the state where the lint is accumulated on the lint filter 71 and the exhaust filter 72, the air in the water tank 3 having a high pressure is discharged into the first in-flight when the drain valve 19 is opened. Release to outside through hose 25, filter box 52, second in-machine drain hose 55, drain joint (not shown), outside drain hose (not shown) and outside trap mechanism (not shown). However, since the trap part 58 having a strong trap function as described above is provided, the trap function prevents the air in the water tank 3 from reaching the trap mechanism (not shown) outside the apparatus. Can be prevented.

  Further, when the blowing performance of the blower fan 15 is high, even if the trap part 58 is blown off by the pressure and the trap function is temporarily broken, Since the wind pressure is greatly reduced, it is possible to prevent the trap function of the trap mechanism outside the aircraft from being broken. Further, even if the trap part 58 is blown off and the trap function is temporarily broken, the trap part 58 originally stores a sufficient amount of water, so the depth is shallow, but the trap performance is It can be maintained. Therefore, it is possible to prevent the odor from the sewage from leaking out.

  Moreover, since the trap part 58 is provided in the downstream from the foreign material collection filter 51, even if it is a substantially U shape which is a shape which a foreign material (for example, a match stick, a nail, a coin, etc.) catches easily, the trap part 58 is. In addition, it is possible to prevent a problem that foreign matter is caught and poor drainage occurs.

  As shown in FIG. 5, the trap height C of the U-shaped portion 56 is set to 40 to 49 mm when the inner diameter D of the second in-machine drain hose 55 is 35 ± 3 mm. In addition to being able to ensure, the performance of the double trap of the Building Standard Law can also be satisfied.

  In addition, if a separate trap part is used, the shape of the part is complicated, so the production of the part is costly, and there is a concern that water leakage may occur from the connection part between the part and the in-machine drain hose. However, as described above, in the first embodiment, since the trap part 58 is formed by the second in-machine drain hose 55, the trap part 58 has no connection part, and the water can be removed by an inexpensive means. It is possible to realize a trap function without the risk of leakage.

  In the first embodiment, the filter unit 70 has the air introduction port 47 disposed on the downstream side of the lint filter 71. However, as shown in the schematic diagram of the configuration of the drying function of another embodiment in FIG. It is also possible to adopt a configuration in which the air introduction port 47 is disposed on the upstream side of the lint filter 71 and the dividing wall 75 is provided between the air introduction port 47 and the air discharge port 46.

  In this configuration, the user forgets to clean the lint filter 71 and the exhaust filter 72, the lint accumulates too much, does not flow downstream from the lint filter 71, and is no longer exhausted from the exhaust filter 72. Even in a normal use state (when there is no or little lint accumulation), the air circulated by driving the blower fan 15 is discharged from the air introduction port 47 through which external air is introduced. The increase in the pressure of the air in 3 can be reduced. In this configuration, since the wind pressure applied to the trap portion 58 is further reduced, the trap performance of the trap portion 58 can be reliably ensured, so that odor from sewage can be reliably prevented from leaking out. .

  In the first embodiment, the blower fan 15 is provided on the upstream side of the heat pump unit 20, but the same effect can be obtained even if it is provided on the downstream side of the heat pump unit 20.

  Further, in Embodiment 1 described above, the drum type washing / drying machine having a drying function has been described. However, even in the drum type washing machine having no drying function, the machine is driven by the rotational wind pressure of the rotating drum during the dehydration process. The trap function of the other trap mechanism may be affected. By adopting the configuration of the trap unit 58, a reliable trap function can be ensured.

  As described above, in the drum type washing and drying machine according to the present invention, even if lint accumulates on the lint filter and the air pressure in the water tank rises, the trap part of the drain hose is a part of the air circulating from the drain hose. This prevents the water trapped in the external trap mechanism from being blown away and washed away by the pressure of the leaked air, preventing the external trap mechanism from having a trap function. Can be prevented from leaking out, so that it is useful as a drum-type washing / drying machine that performs washing, rinsing, dehydration, and drying processes.

Side sectional view of the drum type washing and drying machine according to the first embodiment of the present invention Top view around the foreign matter collection filter of the drum-type washer / dryer Front view around the foreign matter collection filter of the drum-type washer / dryer Sectional view around the foreign matter collection filter of the drum-type washer / dryer Sectional view of the trap section of the drum-type washer / dryer Schematic showing the structure of the drying function of the drum-type washing and drying machine Schematic diagram showing another configuration of the drying function of the drum type washing and drying machine Partially cutaway rear perspective view of a conventional drum-type washer / dryer Cross-sectional view of the main part of the drum-type washing and drying machine Schematic showing the structure of the drying function of the drum-type washing and drying machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum type washing machine 2 Case 3 Water tank 5 Rotating drum 13 Heated air blow duct (circulation blow route)
14 Moisture absorption air blow duct (circulation blow route)
15 Blower fan (Blower unit)
18 Water supply valve (water supply means)
19 Drain valve (drainage means)
27 Compressor 28 Heat absorber 29 Radiator 42 Throttle means 46 Air outlet 47 Air inlet 55 Second in-machine drain hose (drain hose)
58 Trap part 71 Lint filter

Claims (2)

A rotating drum that accommodates laundry and is driven to rotate about a horizontal direction or an inclination direction as a rotation axis, a water tank that rotatably includes the rotating drum and is supported so as to be swingable in a housing, and fixed to the water tank A drum drive motor that rotationally drives the rotary drum; a water supply means that controls water supply to the water tank by opening and closing; a drainage means that controls drainage of washing water in the water tank by opening and closing; and the drainage A drain hose that communicates with the means and discharges the waste water from the water tank to the outside of the housing, a compressor that compresses the refrigerant, a radiator that radiates the heat of the compressed refrigerant, and a throttle for reducing the pressure of the high-pressure refrigerant And a heat pump unit that is connected by a pipe line so that the refrigerant circulates between the means and a heat absorber in which the reduced pressure and low pressure refrigerant takes heat from the surroundings, and air discharged from the rotating drum by the blowing means A circulation air passage that leads from the heat absorber to the radiator and then leads to the rotating drum, an air discharge port that is provided in the middle of the circulation air passage and exhausts a part of the circulating air, and a portion of the circulation air passage A lint filter that captures lint contained in the circulating air, and an air introduction port that is provided in the middle of the circulating air path and that introduces outside air into the circulating air path. A drum-type washing / drying machine in which a trap portion is formed by being deformed into a substantially U shape in the housing. The drum type washing and drying machine according to claim 1, further comprising a foreign matter collecting filter for collecting foreign matter and lint mixed in the waste water, wherein the foreign matter collecting filter is provided between the drain means and the trap portion.

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