JP4205745B2 - Drum type washer / dryer - Google Patents

Description

  The present invention relates to a drum-type washing and drying machine that performs washing, rinsing, dehydration, and drying steps 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.

  Such a drum type washing and drying machine will be described with reference to the drum type washing and drying machine 1 according to the embodiment of the present invention shown in FIG. The rotating drum 2 is provided in the water tank 3 and generally performs washing, rinsing and dewatering processes by controlling the water supply, drainage and rotation of the rotating drum 2 in the water tank 3, and is a blowing means. The drying process of the laundry is carried out by circulating the air in the water tank 3 through the circulation blowing path 5 provided with the dehumidifying means and the heating means by the blower fan 15 (see, for example, Patent Documents 1 and 2). ).

  Here, the dehumidifying means and the heating means are an evaporator and a condenser constituting an air conditioner connected by a compressor and a refrigerant circuit as an example, and the evaporator introduces the air in the water tank to the circulation air flow path by the air blowing means. And heat exchange through the condenser sequentially to make thirsty hot air heated after dehumidification, so that it can be efficiently dried repeatedly by blowing it into the water tank and exposing it to the laundry in the rotating drum Yes.

  Foreign matter such as lint separated from the laundry in the rotating drum is mixed in the circulating air circulating through the circulating air passage in this drying process, and this clogs the evaporator and condenser, or in the bearing part of the air blowing means. Biting or depositing on each part of the air blowing means causes malfunction. For this reason, the filter which collects a foreign material is provided in the middle of the circulation ventilation path | route as disclosed by patent document 1,2. In many cases, as disclosed in Patent Document 1, this filter is provided on the upstream side of the air blowing means, the dehumidifying means, and the heating means in the circulating air introduction pipe for introducing the circulating air from the drum and the water tank. However, Patent Document 2 adopts a condensing method by injecting cooling water into the dehumidifying means so that the foreign matter can be humidified and dropped simultaneously with the dehumidification of the circulating air. The structure arrange | positioned in this order is disclosed.

In any case, the filter is provided so that it can be attached and detached because foreign matter to be collected accumulates and the passage resistance of the circulating air increases. Patent document 1 is disclosing the filter directly attached and detached from the attachment / detachment opening of the front surface of a washing-drying machine main body with the top plate which block | closes this attachment / detachment opening. Further, Patent Document 2 discloses a heating / filter unit in which a heating unit and a filter chamber are integrated with a lid opened through a loading / unloading port provided on the top surface of the washing / drying machine. A removable filter is disclosed.
JP-A-8-243292 JP 2006-187449 A

  By the way, the filter is clogged by attachment and detachment, but sometimes the clogging process is sometimes forgotten or neglected. When the clogging becomes excessive, the ventilation resistance increases, and the circulating air is abnormally pressurized upstream including the water tank. The abnormally pressurized circulating air escapes to a drain hose that communicates with the water tank and overflows the wash water, and may be ejected to a drain trap to which the drain hose is connected. In such a case, the water stored in the drain trap is blown off by the wind pressure, so that the function of the trap is destroyed, and there is a possibility that the odor from the sewer pipe leaks out.

  In addition, the inventor may separately increase the temperature of the circulating air circulating in the rotating drum or the circulating air blowing path, while the upper limit temperature is detected. However, the introduction of such outside air also increases the circulating air pressure and causes escape to the drainage hose.

  An object of the present invention is to provide a drum-type washing and drying machine that can easily eliminate abnormal temperature rise and pressure increase by skillfully utilizing the flow of circulating air passing through a filter chamber.

  In order to achieve the above object, the present invention provides a rotating drum in which a large number of through-holes are formed and which is rotated and accommodates laundry, water supply and drainage in the water tank, and rotation of the rotating drum The washing, rinsing, and dehydration processes are carried out under the control of the laundry, and the drying process of the laundry is carried out by circulating the air in the water tank through the circulation blowing path provided with the dehumidifying means and the heating means by the blowing means. In a drum-type washer / dryer having a filter chamber that is mounted so that a filter that mainly collects foreign matter such as lint can be attached / detached in the middle of the air flow path, the filter has a bowl shape substantially along the inner surface of the filter chamber. None, the half on the circulating air introduction side having an opening for introducing the circulating air from the circulation air introduction port provided on the filter insertion side half of the filter chamber, and the half on the back side of the filter chamber A support frame having a circulating air discharge side half supporting a filter material corresponding to the circulating air discharge port provided on the circulating air introduction side of the support frame and introduced from the circulating air introduction port to the half of the circulating air introduction side A negative pressure region that receives suction from the flow of circulating air that is discharged to the circulating air discharge port through the filter material is provided, and this negative pressure region is connected to the outside air introduction path from the outside, so that the half of the support frame on the circulating air introduction side is provided. A part of the circulating air introduction area of the part is communicated with an external exhaust path to the outside.

  According to such a configuration, the outside air introduction path is normally closed. However, if it is opened in the drying process, for example, when the upper limit temperature of the circulating air or the circulating air is detected, the outside air introduction path enters the filter chamber through the circulating air inlet. The outside air is sucked into the circulating air by the negative pressure suction force generated in the negative pressure region in the filter chamber by the flow of the circulating air introduced and passed to the circulating air discharge port, and the circulating air in the filter chamber is discharged. Since it is made to mix with the circulating air which circulates through a circulation ventilation path | route toward an exit, the temperature of the inside of a rotating drum or circulating air can be lowered | hung with external air. Further, even if the circulating air amount becomes excessive due to the introduction of the external air and the pressure in the circulating air blowing path rises, the excess circulating air is discharged outside through the external exhaust path using the air blowing pressure. Furthermore, when the filter is clogged, there is no escape route for circulating air, the pressure in the circulating air flow path rises, leaks into the drain hose connected to the water tank, and is ejected to the drain trap, where it accumulates. When the water is blown off by the wind pressure, the trap function is destroyed and the smell from the sewer pipe leaks, but the excess of circulating air during such clogging communicates with the negative pressure region. The pressure rises naturally because it flows back to the outside air introduction path and exits outside.

According to a further configuration, the external exhaust communication port of the filter chamber connected to the outside air discharge path is smaller than the circulating air discharge port.
By adjusting the ventilation resistance between the external exhaust communication port and the circulating air discharge port, priority is given to the discharge of the circulating air to the circulating air discharge port, and it is possible to prevent the external exhaust from being accidentally pulled out through the external exhaust communication port.

According to a further configuration, the negative pressure region is arranged side by side with the circulating air introduction region on the circulating air introduction side half of the support frame,
A negative pressure region and a circulating air introduction region are provided by satisfying the necessary widths by utilizing the space on the circulating air introduction side that is unrelated to the half of the circulating air discharge side of the support frame.

The negative pressure region is formed by partitioning from the wider circulating air introduction region by a partition portion in the half of the circulating air introduction side of the support frame, and communicates with the circulating air introduction region to the circulating air discharge side. In the configuration
A circulation air introduction area and a negative pressure area are arranged side by side with a very simple structure that is partitioned by a partition part, and suction is applied to the negative pressure area due to the flow of circulation air from the circulation air introduction area to the circulation air discharge port. Can be covered.

In the further configuration, the outside air introduction path is opened in the peripheral wall portion facing the partition portion of the negative pressure region,
The outside air sucked into the negative pressure region through the outside air introduction path collides with the partition and goes to the circulating air discharge port of the filter chamber directly below, and the half of the circulating air introduction side from the circulating air introduction port of the filter chamber The circulating air introduced into the circulating air introduction area formed by the air is smoothly mixed and mixed with the flow toward the circulating air discharge port of the filter chamber toward the half of the circulating air discharge side, and the flow of the circulating air is disturbed. In other words, the relationship is such that the flow of the circulating air tends to exert a suction force on the negative pressure region, and the outside air sucked therein tends to be directed to the circulating air discharge port of the filter chamber.

The circulating air introduction area and the negative pressure area on the half of the circulating air introduction side of the support frame are opened to the front, and the circulating air introduction opening is surrounded by the front wall with the circulation air introduction opening on the filter attachment / detachment side of the filter chamber. According to a further configuration that is to be closed,
Both the circulating air introduction region and the negative pressure region in the half of the support frame on the circulating air introduction side have a simple shape that functions together with the filter chamber by opening the front part, and is easy to mold.

A filter attachment / detachment opening is formed on the top surface of the washing / drying machine main body, and the filter chamber has a circulation air introduction port on the front wall of the half on the attachment / detachment opening side and an external exhaust communication port on the rear wall facing each other. The circulating air discharge port is formed at a position that is formed laterally below the external exhaust communication port on the rear wall of the rear half, and is attached to the filter chamber when the filter is attached to the filter chamber. According to a further configuration, which has a top plate that closes the outlet, the support frame is integrated on the lower surface of the top plate on the circulating air introduction side.
Excess circulating air is introduced from the circulating air introduction port on the front wall of the upper half of the filter chamber into the circulating air introduction area on the circulating air introduction side of the support frame, and then the excess is circulated in the filter chamber. It is pushed out without difficulty so as to go straight to the external exhaust communication port in the rear wall of the half on the air introduction side, and exhausted to the outside. The remaining normal air volume and circulating air is in the half of the circulating air discharge side of the filter chamber, the circulating air discharge port located laterally away from the circulating air introduction port on the rear wall and the external exhaust communication port It exerts a suction force on the negative pressure area while being smoothly discharged. In addition, the filter only needs to be installed so that the attachment / detachment opening is closed with a top plate through the attachment / detachment opening, and the appearance is almost flushed as shown in the figure by closing the attachment / detachment opening with the top plate. In addition, it is possible to make it harder for people to get caught.

According to the further structure which has the cue recessed part opened upwards in the top plate,
The filter can be attached and detached, and can be pulled out and attached stably by placing a finger on the recess.

  According to the present invention, the flow of the circulating air that passes from the circulating air inlet of the filter chamber to the circulating air outlet is used as long as the outside air introduction path opens when the upper limit temperature is detected in the drying process. Thus, the temperature of the circulating air can be lowered by sucking and mixing outside air into the circulating air, and it is possible to prevent abnormal temperature rise in the rotating drum or circulating air by simple improvement of the air passage in the filter chamber. Moreover, even if the amount of circulating air becomes excessive due to the introduction of external air, the excess amount escapes to the outside using the blowing pressure. In addition, when the filter is clogged, there is no escape route for circulating air, the pressure in the circulating air passage rises, leaks into the drain hose connected to the water tank, and blows out into the drain trap, and the water accumulated there By being blown by the blowing pressure, the function of the trap is destroyed and the smell from the sewer pipe leaks, but the excess of circulating air at the time of such clogging communicates with the negative pressure region Since the pressure flows back to the outside air introduction path and escapes to the outside, the pressure increase can be canceled naturally.

  In the drum type washing / drying machine 1 shown in FIG. 1 according to the embodiment of the present invention, the water tank 3 is suspended in the washing / drying machine main body 44 by a suspension structure (not shown), and the water tank 3 has a bottomed cylindrical shape. The formed rotating drum 2 is disposed such that its axial direction is inclined downward from the front side to the back side. A clothing doorway 11 leading to the opening end of the rotary drum 2 is formed on the front side of the water tank 3, and a door 9 that closes the opening provided on the upward inclined surface formed on the front side of the washing and drying machine main body 44 so as to be openable and closable. The laundry can be taken in and out of the rotary drum 2 through the clothing entrance 11. Since the door 9 is provided on the upward inclined surface, the work for putting in and out the laundry can be carried out without bending the waist, and generally the workability of the drum type washing machine for taking in and out the laundry from the sideways opening is provided. The evil has been improved.

  The rotating drum 2 is formed with a large number of through holes 8 communicating with the water tank 3 on its peripheral surface, and provided with stirring protrusions (not shown) at a plurality of positions on the inner peripheral surface. The rotating drum 2 is rotationally driven in the forward and reverse directions by a motor 7 attached to the back side of the water tank 3. Further, a water injection pipe 12 and a drain pipe 13 are connected to the water tank 3, and water is poured into and drained into the water tank 3 by control of a water injection valve and a drain valve (not shown).

  When the door 9 is opened and laundry and detergent are put into the rotating drum 2 to start the operation of the drum-type washing / drying machine 1, a predetermined amount of water is injected into the water tank 3 from the water injection pipe 12. As a result, the rotary drum 2 is rotationally driven to start the washing process. By the rotation of the rotating drum 2, the laundry accommodated in the rotating drum 2 is lifted in the rotating direction by the stirring protrusion provided on the inner peripheral wall of the rotating drum 2, and the stirring operation of dropping from the lifted appropriate height position Is repeated, so that the laundry has the effect of tapping and washing. After the required washing time, the dirty washing liquid is discharged from the drain pipe 13, and the washing liquid contained in the laundry is dehydrated by a dehydrating operation that rotates the rotating drum 2 at a high speed. Rinsing is performed by pouring water from the passage 12. Also in this rinsing step, the laundry stored in the rotary drum 2 is rinsed by repeating the stirring operation in which the laundry is lifted by the stirring protrusion by the rotation of the rotary drum 2 and dropped.

  The drum-type washing / drying machine 1 has a function of drying laundry stored in the rotary drum 2. The air in the water tank 3 as shown in FIGS. 1 and 2 is exhausted to dehumidify and heat. The circulation air flow path 5 described above for blowing the dried air into the water tank 3 again is formed. As described above, it is general that a dehumidifying means such as an evaporator 31, a heating means such as a condenser 32, and a blower fan 15 as a blowing means are provided in the middle of the circulating air flow path 5 as shown in FIG. 1. When the blower fan 15 is driven to rotate, air flows in the circulation blower path 5 so that the air in the rotary drum 2 containing the laundry flows from the water tank 3 to the blower fan 15 through the through-hole 8. The air is exhausted to the circulating air introduction pipe 16 and dehydrated by dehydrating the evaporator 31 located upstream of the blower fan 15 and heated by heat exchange with the condenser 32 that is heated to about 65 ° C. With that, it is always dry and hot air. This dried high-temperature air is sent from the blower fan 15 to the blower duct 33 to the water tank 3 and blown into the water tank 3. The high-temperature dry air blown into the water tank 3 enters the rotary drum 2 through the through holes 8 and escapes to the water tank 3 while being exposed to laundry such as clothes, and is again introduced into the circulating air introduction pipe line 16. The drying process is carried out by repeating the circulation of the air in the circulating air flow path 5 described above.

  Further, in the drying process using the circulating air passage 5, foreign matters such as lint generated from laundry such as clothes are circulated in the air circulated through the circulating air passage 5, and the evaporator 31 and the condenser 31 are condensed. It is difficult to carry out a drying process such as clogging of the vessel 32, biting into the rotating part of the blower fan 15, and accumulation on the inner surface of the blower fan 15, and frequent troublesome maintenance is required. From the middle of the circulating air flow path 5, specifically, the upstream side of the evaporator 31, the condenser 32, and the blower fan 15, and accordingly, in the middle of the circulating air introduction pipe line 16 as shown in FIGS. It is common to provide a filter chamber 36 that houses a main filter 35 that removes foreign matter in the circulating air. As a result, even if foreign matter is mixed into the air after the laundry is dried and introduced into the circulating air introduction pipe 16 side on the evaporator 31 side, it is collected by the main filter 35 when passing through the filter chamber 36. And is not mixed into the circulating air downstream. Therefore, the functions of the evaporator 31, the condenser 32, and the blower fan 15 are maintained for a long time. On the other hand, however, there is a problem in that the collected foreign matter accumulates on the main filter 35 in the filter chamber 36, and the passage resistance of the circulating air gradually increases, thereby lowering the drying function. Is provided so as to be detachable as described in Patent Documents 1 and 2 described above.

  The evaporator 31 and the condenser 32 are handled as an air conditioner 39 as shown in FIG. 1 housed in one container 38 together with a compressor 37 connected by a refrigerant circuit for circulating a refrigerant therethrough. The air inlet 41 side of the blower fan 15 is coupled to the exhaust port 41 side for exhausting air after dehumidifying and heating the introduced air of 39 with a vibration-proof structure portion between them and integrated. As a result, the compressor 37, the evaporator 31, and the condenser 32 are combined into a container body 38, and the two air conditioners 39 and the blower fan 15 are combined into a single unit suitable for mass production. Thus, each of the four devices, that is, the compressor 37, the evaporator 31, the condenser 32, and the blower fan 15 is related as an air conditioning / blower unit 81 that forms a part of the circulation blower path 5 and achieves a predetermined function.

  In the present embodiment, in order to solve the problems such as those described in Patent Documents 1 and 2, the filter 91 typified by the main filter 35 is provided in the washing / drying machine main body 44 in order to provide the main filter 35. From the attachment / detachment port 51 shown in FIGS. 1 and 3 to 5 opened in the top surface 44a, the filter chamber 36 is attached / detached through an attachment / detachment path 52 inclined forward from the lower part to the upper part. In this way, the circulating air circulating through the circulation air passage 5 in the drying process is passed through the main filter 35 attached to the filter chamber 36 in the middle of the circulation air passage 5 to collect foreign matters such as lint. The main filter 35 satisfies a condition that it is easy to avoid a person or the like from being inadvertently caught and loosened by being attached and detached at the top surface 44a of the relatively tall washing and drying machine main body 44, From the attachment / detachment opening 51 opened on the top surface 44a of the washing / drying machine main body 44, it is easy to produce a forward drooping component in the attachment / detachment force due to attachment / detachment through a vertical attachment / detachment path such as that described in Patent Document 2. Compared with a thing, it can be attached and detached smoothly without difficulty in the direction along the attachment / detachment path 52 inclined forward from the lower part to the upper part where it is difficult to bend. For this purpose, it is preferable that the filter chamber 36 that follows from the attachment / detachment port 51 can be guided by the attachment / detachment path 52 that is inclined over the entire attachment / detachment stroke of the main filter 35 to a predetermined position.

  Further, as shown in FIGS. 2, 3, 5, 7, and 8, the main filter 35 has a top plate 53 that closes the attachment / detachment port 51. It is assumed that a cue recess 56 having a lid 55 that pushes upward from above is provided. Thus, by attaching the main filter 35 through the attachment / detachment opening 51, the attachment / detachment opening 51 is finally closed by the top plate 53 so that the appearance is substantially flush as shown in the figure. Can be more easily caught, and can be pulled out and attached stably by placing a finger on the hand-carrying recess 56 provided on the top plate 53. In particular, since the clasp recess 56 is always closed by the lid 55 on which the closing spring 54 works, the clasp recess 56 is unlikely to cause inadvertent catching by a person or the like. Since the lid 55 is pushed open by the operation of applying a finger, the main filter 35 can be easily and easily attached / detached by applying the finger without any special work. In addition, the cue recess 56 forms a rearward cue edge 56a for placing a finger on the front part of the opening, and this cue edge 56a is located in the center of the top plate 53 in the front-rear direction or slightly closer to the front. In order to hang a finger on the clasp recess 56, a clasp edge 56a facing backward is provided at the front portion of the opening, so that the arm extends from the front onto the top surface 44a of the washer / dryer main body 44 and the clasp recess The main filter 35 can be pulled out easily and reliably by the natural action of putting a finger in the hand 56 and bending it easily and without slipping, and along the outer surface of the top plate 53 and the finger part hooked on the hand edge 56a. Holding the top filter 53 between the palm and holding the main filter 35 stably, handling such as carrying after pulling out and mounting to the filter chamber 36 is easy and stable. That. Further, since the rear portion of the lid 55 is hingedly connected to the rear portion of the opening of the handle recess 56 by a hinge pin 57, the handle edge 56a is opened by pushing the lid 55 open when the finger is put into the handle recess 56, and the finger is left as it is. Therefore, it is possible to easily perform the finger-hanging operation on the cue recess 56 for attaching and detaching and the cue edge 56a with a continuous behavior.

  More specifically, as shown in FIGS. 5, 7, and 8, the main filter 35 is formed by supporting a main filter material 79 on a main support frame 71 that is integrally formed or connected so as to extend downward from the top plate 53. A seal packing 73 made of silicon rubber or the like is attached to the outer periphery of the lower portion of the top plate 53 of the main support frame 71 so as to be positioned inside the circulating air discharge port 72 shown in FIG. When the seal packing 73 is attached to a predetermined position, the seal packing 73 is pressed against a stepped portion 74 on the inner periphery of the attachment / detachment opening 51 to seal the filter chamber 36, and the main filter 35 and the filter chamber 36 are sealed. An elastic engagement portion 75 as shown in FIGS. 8 and 9 that engages elastically when the main filter 35 is mounted at a predetermined position is provided therebetween. As a result, the main support frame 71 extending downward from the top plate 53 is inserted into the filter chamber 36 with the main filter material 79 only by attaching the main filter 35 to the filter chamber 36 so as to block the attachment / detachment port 51 with the top plate 53. The seal packing 73 provided on the outer periphery of the lower portion of the top plate 53 of the main support frame 71 at a predetermined mounting position is pressed against the inner peripheral step 74 inside the attachment / detachment port 51 and the elastic engagement portion 75 is elastic. The filter chamber 36 is maintained in a sealed state by the engagement, and the main filter material 79 can be correctly positioned inside the circulating air outlet 72 of the filter chamber 36. In particular, the mounting portion of the seal packing 73 of the main support frame 71 is a flange portion 71a facing the step portion 74 of the filter chamber 36, and the seal packing 73 extends from the mounting portion 73a to the flange portion 71a and presses against the step portion 74. Therefore, the seal packing 73 is firmly backed up by the flange portion 71a of the main support frame 71 so that the seal lip 73b is placed on the entire circumference of the inner peripheral step portion 74 inside the attachment / detachment port 51. It can be adapted to be in contact with each other and surely pressed, and no air leakage occurs. Further, since the mounting portion 73a is reinforced by the backup of the flange portion 71a, a thin one is sufficient. Here, the attachment / detachment port 51 is formed on the top surface wall 44b that forms the top surface 44a of the washing / drying machine main body 44, whereas the stepped portion 74 that seals the filter chamber 36 with the seal packing 73 is directly below the attachment / detachment port 51. It is formed on the inner periphery of the opening 36d of the filter chamber 36 which is positioned and supported.

  As shown in FIGS. 3 to 5 and 9, the attachment / detachment port 51 that opens to the top wall 44 b has a dam portion 44 c that rises from the top surface 44 a on the entire periphery, and the main filter 35 that is mounted inside the dam portion 44 c. It is assumed that a concave portion 44d for fitting the top plate 53 is provided. As a result, the top plate 53 does not protrude from the concave portion 44d alone to the top surface 44a so that a person or the like is not caught, and even if a little water spills on the top surface 44a, the top plate 53 is dammed by the dam portion 44c. It is possible to prevent entry into the outlet 51 and prevent damage to the electrical equipment in the washing / drying machine main body 44. Further, the top plate 53 has a convex wall 53a projecting downward on the outer periphery, and the concave portion 44d is a fitting that serves as a seal to receive the convex wall 53a between the peripheral wall 44e and the upward convex portion 44f of the inner periphery. It has a structure to receive the top plate 53. Even if water enters the attachment / detachment port 51, the sealing function by the seal fitting structure with the top plate 53 in the recess 44d is provided. It is possible to prevent the inside of the attachment / detachment port 51 from extending, and further safety of the electrical equipment can be achieved. Furthermore, the top plate 53 is made slightly lower than the dam portion 44c. As a result, even when water reaches the weir portion 44c, it is possible to suppress the wetting and shifting to the top plate 53 side that has dropped due to the surface tension of the water, and this also increases the safety of the electrical equipment.

  As shown in FIG. 9, the elastic engagement portion 75 is a combination of an engagement recess or an engagement hole 75a shown in the drawing and a resin spring 75b as shown in the drawing, and the resin spring 75b is detachable. Thereby, the elastic engagement portion 75 can be easily engaged with and disengaged from the engagement hole 75a when the main filter 35 is attached / detached by utilizing the soft elasticity of the resin spring 75b, and does not particularly interfere with the attachment / detachment of the main filter 35. Then, it is possible to notify the user of the completion of the mounting and the start of the removal with a click feeling or a clicking sound that elastically engages at the end of the mounting and at the initial stage of the removal, and the elastic engagement is released. Moreover, the resin spring 75b is fixed at both ends and has an engaging portion 75b1 bent in a mountain shape in the attaching / detaching direction of the main filter 35 that engages with the engaging hole 75a between the both ends, so that the tension force is slightly increased. At the same time, it has high durability. The angle of the resin spring 75b is such that the rising angle in the mounting direction of the main filter 35 is larger than the rising angle in the pulling direction, and it is on the attachment / detachment path 52 to the engagement hole 75a immediately after the mounting of the main filter 35 is completed. Since the step 75a1 and the side with the higher rising angle begin to engage and the mounting resistance is slightly increased, the mounting can be terminated while the user senses that the mounting is nearing completion. In addition, there is a relationship that the main filter 35 is not inadvertently detached by attaching / detaching through the upward attaching / detaching opening 51, so that the main filter 35 can be removed from the engaging hole 75a on the side where the rising angle is small at the initial stage of pulling upward. Applying a smaller resistance than when the filter 35 is completely attached, allowing the user to feel that the filter 35 has been pulled out, and allowing the user to easily pull out by shifting to a pull-out state without resistance due to disengagement due to disengagement. become. In addition, the resin spring 75b is easily broken, but can be replaced independently, so that it can be easily and inexpensively handled. For this purpose, the resin spring 75b is provided on the main support frame 71 side of the main filter 35 as shown in FIGS. 8 and 9, and is exposed to the outside of the main support frame 71 when the main filter 35 is pulled out. Easy to replace. For this replacement, two resin springs 75b are integrally formed on the left and right sides of the back portion of the box body 76 opened forward, and the box body 76 is fitted to the back portion of the main support frame 71 on the opening side. The screw 77 shown in FIG. 9 is screwed to be detachable. Correspondingly, the engagement hole 75 a is provided on the back wall side of the attachment / detachment path 52, and the main filter 35 to be attached / detached slides with the elastic engagement portion 75 positioned on the front wall of the attachment / detachment path 52. At this time, it is possible to prevent the resin spring 75b from being slidably brought into contact with the front wall of the attachment / detachment path 52 within a range where the resin spring 75b is not required.

  The main support frame 71 has a bowl shape as shown in FIGS. 5, 7, and 8 substantially along the inner surface of the filter chamber 36, and the filter chamber shown in FIGS. 5 and 6 below the mounting portion of the seal packing 73. The main filter material corresponding to the upper half 71b that introduces the circulating air from the circulating air inlet 78 provided in the upper half 36b of the 36 and the circulating air outlet 72 provided in the lower half 36c of the filter chamber 36. It has a lower half 71c supporting 79. As a result, the main support frame 71 has a bowl shape and is positioned so as to be substantially along the inner surface of the filter chamber 36, and the upper half corresponding to the circulating air introduction port 78 provided in the upper half 36 b of the filter chamber 36. Circulating air is introduced into the portion 71 b and led to the lower half portion 71 c supporting the main filter material 79 inside the circulating air discharge port 72 in the lower half portion 36 c of the filter chamber 36 and circulated through the main filter material 79. The air can be smoothly discharged to the air discharge port 72 by using the full size of the filter chamber 36. In addition, the main filter material 79 is not hung on the circulating air inlet 78 and, if necessary, not to be bypassed, as well as the range corresponding to the circulating air outlet 72, as shown in FIG. The area of the filter chamber 36 can be used to provide the main filter material 79 in a wide area outside 72 and to pass the circulating air toward the circulating air discharge port 72 as indicated by an arrow in the figure. As a result, clogging is less likely to occur due to an increase in the circulating air passage area of the main filter material 79.

  In this case, both the filter chamber 36 and the main filter 35 attached thereto are inclined as shown in FIG. 1, and the inner surface of the filter chamber 36 is an attachment / detachment opening formed in the top wall 44 b of the washing / drying machine main body 44. An attachment / detachment path 52 leading to 51 is formed.

Moreover, as shown in FIGS. 5 and 7, the filter 91 of the present embodiment works first against the circulating air that enters from the circulating air inlet 78 of the filter chamber 36 and is discharged to the circulating air outlet 72. The above-described main filter 35 has a double filter structure with a backup filter 82 that operates thereafter. The backup filter 82 is mounted before the main filter 35 and is taken out later. The main filter 35 is extracted from the backup filter 82. Also, it is provided so as to be attached later and taken out first, and the back wall 82 of the back-up filter 82 becomes the back side of the filter chamber 36, and for the independent removal from the lower half 36c, it is provided on the front wall 101b from the inside. A cue recess 133 is provided to allow a finger to be hung. The backup filter 82 is attached by being slid into the filter chamber 36 from above and guided to a predetermined position by the attachment / detachment path 52.
For this purpose, a backup filter 82 having a bowl-shaped sub-support frame 101 along the inner surface of the lower half 36c of the filter chamber 36 in the backup filter 82 around the lower half 71c of the main support frame 71 in the main filter 35 is provided. The sub filter material 83 is supported outside the main filter material 79 so as to cover it. Thus, after the backup filter 82 is attached to the lower half 36c of the filter chamber 36, the main filter 35 is attached to the inside of the upper half 36b of the filter chamber 36 and the subsequent backup filter 82 and introduced into the filter chamber 36. Circulating air can satisfy the double filter structure that passes through the main filter material 79 of the main filter 71 and the sub filter material 83 of the backup filter 82 in a double manner and exits to the circulating air discharge port 72. As a result, foreign matters such as fine lint are reliably collected by the main filter material 79 and the sub filter material 83 which are thin and have low air resistance, so that the functions of the devices such as the evaporator 31, the condenser 32 and the blower fan 15 are collected. Therefore, since most foreign matters are collected by the main filter material 79 that passes first, clogging frequently occurs on the side of the main filter material 79, and on the side of the sub filter material 83. The number of clogging is extremely less than that of the main filter material 79.

  Therefore, when the main filter 35 and the backup filter 82 are attached, the main filter 35 leaves the backup filter 82 in the lower half portion 36c of the filter chamber 36 and pulls it out first, so that the backup filter 82 is frequently clogged. The backup filter 82 can be easily attached and reattached, and the backup filter 82 is pulled out after the main filter 35 only when clogging processing is necessary, and the main filter 35 is attached after the clogging processing is performed prior to the main filter 35. It returns to the use state by attaching. Therefore, handling is not particularly troublesome.

  Corresponding to such a double filter structure of the main filter 35 and the backup filter 82, the backup filter 82 includes a circulating air outlet of the backup filter 82 and the filter chamber 36 as shown in FIGS. A seal made of silicon rubber or the like that seals both a partition boundary portion 92 having an independent exhaust space 95 on the side of 72 and a partition boundary portion 93 having an independent exhaust space 96 between the main filter 71 and the backup filter 82. A packing 94 is provided. Thus, the circulating air introduced into the filter chamber 36 and the upper half 71b of the main support frame 71 is not bypassed, and the independent exhaust space 96 between the main filter 71 and the backup filter 82, the backup filter 82, and the filter chamber 36. As shown by the arrows in FIG. 5, the independent exhaust space 95 between the circulating air discharge port 72 and the circulating air discharge port 72 is sequentially passed through to the circulation air discharge port 72 after removing the foreign matter of the double filter structure.

  Here, as shown in FIG. 5, the backup filter 82 has a sub-support frame 101 having a bowl shape that fits into the lower half portion 36c provided with the circulating air discharge port 72 of the filter chamber 36, and is circulated. The sub-filter material 83 is supported inside the air discharge port 72, and the main filter 35 has a bowl shape substantially along the inner surface of the backup filter 82 mounted on the upper half 36b and the lower half 36c of the filter chamber 36. An auxiliary filter that is supported by an upper half 71 b that introduces circulating air from a circulating air inlet 78 provided in the upper half 36 b of the filter chamber 36 and a backup filter 82 that is attached to the lower half 36 c of the filter chamber 36. A main support frame 71 having a lower half portion 71c that supports the main filter material 79 on the inner side of the material 83 and discharges circulating air in a double filter structure with the backup filter 82. To satisfies the antecedent relationship of the discharge circulating air to the front-rear relationship and removable work.

  The seal packing 94 is attached to the outer periphery of the sub-support frame 101 as shown in FIGS. 5, 7, and 9, and the upper half 36b and the lower half of the filter chamber 36 are shown in FIGS. Circulating air exhaust formed on the outer surface between the stepped portion 102 formed on the inner surface between the portion 36c and facing the circulating air introduction port 78 and the upper half 71b and the lower half 71c of the main support frame 71. By sandwiching the main filter 35 and the backup filter 82 by mounting the filter chamber 36 in a predetermined position between the facing portions of the step portion 103 facing the outlet 72 side, both the step portions 102 and 103 are pressed against and sealed. Like to do. Accordingly, the two partition boundary portions 92 and 93 can be sealed by using one seal packing 94 by using the fitting of the main filter 35 and the backup filter 82 to the filter chamber 36. The main filter 35 is held by an elastic engagement portion 75 that elastically engages when the filter chamber 36 is mounted at a predetermined position, and is prevented from inadvertently loosening and causing air leakage. Moreover, as shown in FIGS. 5, 7, and 9, the seal packing 94 is mounted on the flange portion 101a facing the both step portions 102 and 103 of the sub-support frame 101, and from the mounting portion 94a to the flange portion 101a. As shown in FIG. 5 and FIG. 7, seal lips 94b and 94c extending to both step portions 102 and 103 are pressed against these step portions. As a result, the seal packing 94 is firmly backed up by the flange portion 101a of the sub-support frame 101, and the seal lips 94b and 94c are well fitted to the entire circumference of both step portions 102 and 103, so that air leakage does not occur. Can be.

  Further, as shown in FIG. 7, the main filter 35 and the backup filter 82 are provided with magnets 111 and 112, respectively, and the filter chamber 36 is provided with the main filter 35 and the backup filter 82 as shown in FIG. When mounted at a position, it includes a filter detection device 113 having a built-in pair of filter detection switches that individually react with the magnets 111 and 112 and output an electric signal to the outside. As a result, if both the main filter 35 and the backup filter 82 are not mounted under the control of the control board 67 provided inside the operation panel 66, the use can be prohibited. Since the attachment / detachment opening 51 such as the main filter 35 is located on the top surface 44a of the washing / drying machine main body 44, the operation panel 66 is not obstructed by the attachment / detachment opening 51 on the front surface of the washing / drying machine main body 44 as shown in FIG. As shown, it can be provided widely, and even if there are many operation units and display units corresponding to multiple functions, it is easy to operate and easy to see.

  Further, as shown in FIG. 7, the main filter 35 is circulated having an open state opening 121 through which circulating air is introduced from a circulating air introduction port 78 provided in the upper half 36 b on the filter insertion side of the filter chamber 36. Circulating air discharge supporting the main filter material 79 corresponding to the circulating air discharge port 72 provided in the upper half 71b on the air introduction side and the lower half 36c on the back side of the filter chamber 36 as described above. A main support frame 71 having a lower half 71c on the side is provided, and an upper half 71b on the circulating air introduction side of the main support frame 71 is indicated by a solid line arrow 122 through the opening 121 from the circulating air introduction port 78. In this way, a negative pressure region 124 that receives suction as indicated by a broken-line arrow 123 by a flow of circulating air discharged to the circulating air discharge port 72 through the main filter material 79 is provided. As shown in FIG. 6, through an intake port 124 a provided in the main support frame 71, the outside air introduction path 125 that introduces outside air from the outside air introduction port 125 a that is exposed to the outside communicates with the outside air introduction communication port 125 b that opens to the filter chamber 36. A part of the circulating air introduction area 126 having the opening 121 of the upper half 71b on the circulating air introduction side of the main support frame 71 is provided with an auxiliary outlet 129 provided on the rear wall of the main support frame 71. 127, an external exhaust path 128 communicating with the external exhaust port 128a shown in FIGS. 5 and 6 is communicated with an external exhaust communication port 128b opened in the filter chamber 36.

  Although the outside air introduction path 125 is normally closed with a built-in electromagnetic valve 132, the electromagnetic valve 132 is opened by control from the control board 67 or the like when the upper limit temperature of the circulating drum 2 or circulating air is detected. Thus, outside air is sucked into the circulating air by the negative pressure suction force generated in the negative pressure region 124 by the flow of the circulating air, and is mixed with the circulating air that circulates in the circulating air discharge path 72 toward the circulating air discharge port 72. The temperature of the rotary drum 2 and the circulating air can be lowered and kept in an appropriate temperature range, and therefore the electromagnetic valve 132 is often kept open thereafter. Further, when the amount of circulating air becomes excessive due to the introduction of this external air or the like, the pressure in the circulating air blowing path 5 rises. It enters the exhaust path 128 and exits from the external exhaust port 128a. As shown in FIGS. 2 and 6, the outside air introduction port 125a is opened right behind so that no foreign matter or the like falls, whereas the external exhaust port 128a is opened upward as shown in FIG. Moreover, as shown in FIG. 1, the washing and drying machine main body 44 protrudes from the back surface 44 g. As a result, the moist circulating air before dehumidification is exhausted from the external exhaust port 128a to prevent dripping of condensate water, and a small amount of dew condensation water is allowed to dry naturally.

  Here, the filter chamber 36 is formed such that a circulating air introduction port 78 is formed on the front wall of the upper half portion 36b on the side of the attachment / detachment port 51, and an external exhaust communication port 128b is formed on the rear wall so as to face each other. A circulating air discharge port 72 is formed at a position on the rear side wall of the lower half portion 36c that is the back side and is laterally removed below the external exhaust communication port 128b. Thus, excess circulating air is introduced from the circulating air introduction port 78 in the front wall of the upper half portion 36b of the fill chamber 36 into the circulating air introduction region 126 of the upper half portion 71b of the main support frame 71, and then the filter. The chamber 36 is pushed out without difficulty so as to go straight to the external communication port 128b in the rear wall of the upper half portion 36b of the chamber 36 and exhausted to the outside. The remaining circulating air with the normal air volume is smoothly discharged toward the circulating air discharge port 72 on the rear wall in the lower half 36c of the filter chamber 36.

  As shown in FIG. 5, the external exhaust communication port 128b is sufficiently smaller than the circulating air discharge port 72, and the circulation of the circulating air is adjusted by adjusting the ventilation resistance between the external exhaust communication port 128b and the circulating air discharge port 72. Priority is given to the discharge to the air discharge port 72 to prevent the circulating air from being accidentally escaped to the outside. Further, as shown in FIG. 7, the negative pressure region 124 is juxtaposed with the circulating air introduction region 126 in the upper half 71 b on the circulating air introduction side of the main support frame 71, and the backup filter 82 of the main support frame 71. A space unrelated to each other is used to satisfy the required size. Specifically, the negative pressure region 124 is formed by partitioning from a wider circulating air introduction region 126 by a plate-like partition part 131 integrally formed in the upper half 71b on the circulating air introduction side of the main support frame 71. In addition, the circulating air introduction area 126 is connected to the circulating air discharge side. As a result, the circulating air introduction area 126 and the negative pressure area 124 are arranged in parallel with a very simple structure, and the negative air pressure area 124 is sucked by the flow of circulating air from the circulating air introduction area 126 to the circulation air discharge port 72. Can act. In particular, the outside air introduction path 125 is opened through the intake port 124a in the peripheral wall portion facing the partition portion 131 in the negative pressure region 124 as shown in FIG. As a result, the outside air indicated by the broken arrow 123 drawn into the negative pressure region 124 through the outside air introduction port 125a, the outside air introduction path 125, the outside air introduction communication port 125b, and the intake port 124a collides with the partition 131 and is directly below the filter chamber. 36, the circulating air introduced from the circulating air introduction port 78 of the filter chamber 36 into the circulating air introduction region 126 formed by the upper half 71b of the main support frame 71 is directed toward the lower half 71c. Thus, the flow toward the circulating air discharge port 72 of the filter chamber 36 is smoothly merged and mixed, and the flow of the circulating air indicated by the solid arrow 122 is not disturbed, and the flow of the circulating air indicated by the solid arrow 122 is negative. It is easy to exert a suction force on the pressure region 124, and the outside air sucked there as indicated by a broken line arrow 123 is directed toward the circulating air discharge port 72 of the filter chamber 36. To satisfy the easy relationship.

  On the other hand, when the main filter 35, the backup filter 82, and the auxiliary filter 129 are clogged in the drying process, there is no escape route for the circulating air introduced to the main filter 35 in the past, and the pressure in the circulating air passage 5 increases. Then, it leaks into a drain hose (not shown) connected to the aquarium 3, and the water trapped in the drain trap is blown by the wind pressure, so that the function of the trap is destroyed and the odor from the sewer pipe leaks. However, the excess amount of circulating air at the time of such clogging is reversed from the negative pressure region 124 as shown by a one-dot chain line arrow 134 in FIG. 7 contrary to the flow so far (broken line arrow 123 in FIG. 7). The air enters the outside air introduction path 125 where the electromagnetic valve 132 is opened through the outside air introduction communication port 125b through the outside air inlet 124a and exits from the outside air introduction port 125a. In, can do is possible to eliminate the naturally boost.

  Further, the negative pressure region 124 of the upper half 71b on the circulating air introduction side of the main support frame 71 is opened to the front together with the circulating air introduction region 126 having the open opening 121 as shown in FIGS. Then, the upper half 36b on the filter attachment / detachment side of the filter chamber 36 is closed by a portion without the circulating air introduction port 78 on the front wall as shown in FIG. As a result, both the circulating air introduction area 126 and the negative pressure area 124 in the upper half 71b of the main support frame 71 are opened to form a simple shape that functions together with the filter chamber 36, thereby facilitating molding.

  The present invention is practically used in a circulating air blowing system for drying laundry in a drum-type washing and drying machine and collects lint and the like mixed in the circulating air in a drying process with a filter. The improvement avoids abnormal temperature rise and abnormal pressure increase in the circulation fan system.

Sectional drawing which shows the principal part structure of the drum type washing-drying machine which concerns on embodiment of this invention. The internal rear view of a drum-type washing dryer same as the above. The upper perspective view of a drum type washing-drying machine same as the above. The perspective view which removed the filter and looked at the attachment-and-detachment mouth part of the filter of FIG. Sectional drawing which shows the relationship between the top | upper surface of the washing-dryer main body of FIG. 3, an attachment / detachment port, a filter chamber, a main filter, and a backup filter. FIG. 6 is a perspective view of the filter chamber of FIG. 5. The perspective view which isolate | separates and shows a main filter and a backup filter. The perspective view which changed the direction and looked at the main filter of FIG. Sectional drawing which shows the elastic engagement part of a main filter and a filter chamber.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum type washing-drying machine 2 Rotating drum 3 Water tank 5 Circulation ventilation path 7 Motor 8 Through hole 15 Blower fan 31 Evaporator 32 Condenser 35 Main filter 36 Filter chamber 36b Upper half part 36c Lower half part 36d Opening 36e Front wall 37 Compressor 51 Removable port 52 Removable path 53 Top plate 56, 133 Cue recess 71 Main support frame 71a, 101a Flange 71b Upper half 71c Lower half 72 Circulating air outlet 73, 94 Seal packing 73a, 94a Mounting portion 73b, 94b, 94c Seal lips 74, 102, 103 Step 75 Elastic engagement portion 75a Engagement hole 75b Resin spring 76 Box body 77 Screw 78 Circulating air introduction port 79 Main filter material 91 Filter 124 Negative pressure region 125 Outside air introduction passage 126 Circulation Air introduction area 127 External exhaust port 128 External exhaust path

Claims (8)

A rotating drum is formed in the water tub that is formed with a large number of through holes and is rotationally driven to accommodate the laundry. Each process of washing, rinsing, and dewatering is controlled by controlling the water supply, drainage, and rotation of the rotating drum in the water tub. In addition, the drying process of the laundry is performed by circulating the air in the water tank through the circulation air passage provided with the dehumidifying means and the heating means by the air blowing means, and foreign matters such as lint mainly in the circulation air passage. In a drum-type washing and drying machine comprising a filter chamber that is mounted so that a filter that collects can be attached and detached,
The filter has a bowl shape substantially along the inner surface of the filter chamber, and has a half on the circulating air introduction side having an opening for introducing the circulating air from the circulating air introduction port provided on the filter insertion side half of the filter chamber. And a half of the circulating air discharge side that supports the filter material corresponding to the circulating air discharge port provided in the half of the back side of the filter chamber, and on the circulating air introduction side of the support frame A negative pressure region that receives suction from the flow of the circulating air that is introduced from the circulating air introduction port and discharged to the circulation air discharge port through the filter material is provided in the half, and this negative pressure region is communicated with the outside air introduction path from the outside. A drum-type washing and drying machine characterized in that a part of the circulating air introduction area on the circulating air introduction side of the support frame communicates with an external exhaust path to the outside. The drum-type washing and drying machine according to claim 1, wherein the external exhaust communication port of the filter chamber communicated with the external exhaust passage is smaller than the circulating air discharge port. The drum-type washing and drying machine according to claim 1, wherein the negative pressure region is arranged in parallel with the circulating air introduction region in a half of the support frame on the circulating air introduction side. The negative pressure region is formed by partitioning from the wider circulating air introduction region by a partition portion in the half of the circulating air introduction side of the support frame, and communicates with the circulating air introduction region to the circulating air discharge side. The drum-type washing / drying machine according to any one of 1 to 3. The drum type washing and drying machine according to claim 4, wherein the outside air introduction path is opened in a peripheral wall portion facing the partition portion in the negative pressure region. The circulating air introduction area and the negative pressure area on the half of the circulating air introduction side of the support frame are opened to the front, and the circulating air introduction opening is surrounded by the front wall with the circulation air introduction opening on the filter attachment / detachment side of the filter chamber. 6. The drum type washing and drying machine according to claim 5, wherein the drum type washing and drying machine is closed. A filter attachment / detachment opening is formed on the top surface of the washing / drying machine main body, and the filter chamber has a circulation air introduction port on the front wall of the half on the attachment / detachment opening side and an external exhaust communication port on the rear wall facing each other. The circulating air exhaust port is formed at a position that is formed laterally below the external exhaust communication port of the rear wall of the rear half, and is attached to the filter chamber when the filter is attached to the filter chamber. The drum-type washing and drying machine according to any one of claims 1 to 6, further comprising a top plate that closes the outlet, wherein the support frame is integrated with a lower surface of the top plate on the circulating air / air introduction side. The drum-type washing and drying machine according to claim 7, wherein the top plate has a cue recess opening upward.

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