Washing and drying machine

Abstract

To improve a sealing property at a connection part of a drying air channel constituted of a blow molded article.SOLUTION: A washing and drying machine of the invention has a feeding duct part 61a to feed a drying air to an outer tank. The feeding duct part 61a is constituted of a blow molded member. The feeding duct part 61a is sealed in a state where a packing 61e is sandwiched between a connection part 61a2 with other drying air flow channel 61b and other drying air flow channel 61b.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a washing / drying machine that performs washing and drying. [Background technology]

[0002] Patent Document 1 describes a drum-type washer / dryer that includes an outer tub, a water tub elastically suspended in the outer tub, a drum rotatably supported in the water tub, and a drying device that dries the laundry in the drum (see paragraph 0016). The drying device is composed of a heater that heats the laundry in the drum to evaporate moisture, a blower that blows hot air from the heater into the drum, and a heat exchanger that cools and dehumidifies the humid hot air discharged together with water vapor outside the drum (see paragraph 0018). The heat exchanger is hollow-molded into a cylindrical, approximately L-shape, and its lower portion extends approximately horizontally to form a hot air intake port that is connected to the water tub through a duct (see paragraph 0021). An opening that is connected to the intake port of the blower is formed in the upper portion of the heat exchanger (see paragraph 0022). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-154450 A Summary of the Invention [Problem to be solved by the invention]

[0004] By using a blow molded product for a cylindrical hollow molded product such as the heat exchanger of Patent Document 1, the productivity of a washer / dryer can be improved. For example, when a blow molded air passage is installed in the drying device of a washer / dryer, it is possible to secure air passage space compared to vibration welding or screw fixing of a two-panel air passage, and it is possible to form complex shapes and reduce air passage loss. On the other hand, it is difficult to provide a screw fastening part in the butting direction for the air passage of a blow molded product, and therefore it is an issue to ensure high sealing performance at the connection part.

[0005] An object of the present invention is to improve the sealing performance at the connection part of a drying air duct made of a blow molded product. [Means for solving the problem]

[0006] In order to achieve the above object, a washing and drying machine of the present invention comprises: An outer tank for storing water; an inner tank that is rotated inside the outer tank; a drying device having a feed duct for feeding drying air to the outer tub, a return duct for returning the drying air from the outer tub, and a blower for feeding the drying air to the feed duct; In a washing / drying machine having a washing operation and a drying operation, The feed duct includes, at least in part, a feed duct portion formed of a blow molded member; The feed duct portion is sealed at a connection portion with another dry air flow path portion with a packing sandwiched between the feed duct portion and the other dry air flow path portion. Effect of the Invention

[0007] According to the present invention, it is possible to improve the sealing performance at the connection portion of the drying air duct formed of a blow molded product, and it is possible to improve the productivity of a washer / dryer. Problems, configurations and effects other than those described above will become apparent from the following description of the embodiments. [Brief description of the drawings]

[0008] [Figure 1] 1 is a side view of a washer / dryer according to an embodiment of the present invention with side and rear panels removed; [Diagram 2] 2 is a diagram of the washer / dryer of FIG. 1 seen obliquely from behind, with the rear panel and side panels removed. FIG. [Diagram 3] 2 is a cross-sectional view showing the inside of an outer tub of the washer / dryer of FIG. 1. [Figure 4] FIG. 2 is a rear (back side) view of the washer / dryer of FIG. 1 with the top panel, side panels, and back panel removed. [Diagram 5] 2 is a partial enlarged view of the upper part of the washer / dryer of FIG. 1, as viewed from the right side. [Figure 6] FIG. 2 is a view of the feed duct from the rear side of the washer / dryer. [Figure 7] 1 is a view of the feed duct as seen from the left side of the washer / dryer. [Figure 8] 1 is a plan view of the upstream feed duct portion as viewed from the rear, left and right sides of the washer-dryer; FIG. [Figure 9] 4 is an external view of a connection portion between an upstream feed duct portion and a downstream feed duct portion. FIG. [Figure 10] FIG. 10 is a cross-sectional view of the connection portion shown in FIG. [Figure 11] 4 is a cross-sectional view showing a state in which the upstream feed duct portion and the downstream feed duct portion are connected to each other. FIG. [Figure 12] FIG. 12 is an enlarged cross-sectional view of a portion XII in FIG. [Figure 13] 4 is a diagram showing a connection portion between an upstream feed duct portion and a blower. FIG. [Figure 14] 13 is a perspective view showing a configuration in which a harness accommodating section is provided in an upstream feed duct section. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of the present invention will now be described with reference to the drawings. The outline of the configuration of the washer-dryer 100 will be described with reference to Figures 1 to 3. Figure 1 is a side view of the washer-dryer 100 according to an embodiment of the present invention with a side panel 1a and a rear panel 1b removed. Figure 2 is a diagonal rear view of the washer-dryer 100 of Figure 1 with the rear panel and side panels removed. Figure 3 is a cross-sectional view showing the inside of the outer tub 2 of the washer-dryer 100 of Figure 1.

[0010] In this specification, the side seen to the right when viewed from the front of the washer-dryer 100 will be referred to as the right side, and the side seen to the left as the left side. The left-right direction of the washer-dryer 100 will sometimes be referred to as the width direction, the front-rear direction as the depth direction, and the up-down direction as the height direction.

[0011] As shown in Fig. 1, the washer-dryer 100 is a drum-type washer-dryer having a washing function and a drying function. The washer-dryer 100 performs a washing operation and a drying operation. The washer-dryer 100 has a skeleton formed by combining reinforcing materials such as side panels and a front panel 1f (see Fig. 3) (not shown) made mainly of steel plate and resin molded parts on the top of a base 1e, and a housing 1 is formed by further attaching a front design panel 1a, a back panel 1b, and a top panel 1d on top of the skeleton. An opening is formed in the front design panel 1a for putting in and taking out laundry such as clothes, and this opening is openably covered by a door (not shown).

[0012] An outer tub 2 is disposed inside the housing 1. The outer tub 2 is capable of storing liquid therein, and is supported by a plurality of suspensions 21.

[0013] As shown in FIG. 3, the inner tub 3 is disposed inside the outer tub 2. The inner tub 3 has a cylindrical side portion 3b with a large number of holes 2a, and the rear side of the side portion 3b is closed by a bottom surface 3c. The inner tub 3 has an opening 3d on the front side, and a fluid balancer 31 is provided on the outer periphery (periphery) of the opening 3d to reduce vibration caused by imbalance of the laundry during spin-drying. The inner tub 3 is configured to be rotatable via a drive shaft 51 by a motor 5 provided on the bottom portion (rear portion) of the outer tub 2. For this reason, the inner tub 3 is also called a rotating drum.

[0014] As shown in FIG. 2, a heat pump unit 10 for realizing a drying function is disposed on the rear side of the washer / dryer 100. The heat pump unit 10 includes an evaporator (heat radiator), a compressor, a condenser (cooler), an expansion valve, and a gas-liquid separator, which are not shown. The evaporator and the condenser form a heat exchanger, and the evaporator is disposed downstream of the condenser. Air circulating between the heat pump unit 10 and the outer tub 2 and the inner tub 3 is blown by the blower 11, cooled and dehumidified by the condenser, and then heated by the evaporator. The air dehumidified and heated by the heat pump unit 10 dries laundry such as clothes in the inner tub 3, becomes hot and humid, and returns to the heat pump unit 10. In order for the air for drying laundry to circulate between the heat pump unit 10 and the inner tub 3, an air circulation flow path (air circulation duct) 6 is configured between the heat pump unit 10 and the outer tub 2.

[0015] The air circulation duct 6 will be described with reference to FIGS. FIG. 4 is a diagram of the washer / dryer 100 of FIG. 1 as seen from the rear (back side), with the top panel 1d, the side panels, and the back panel 1b removed.

[0016] The washer / dryer 100 is provided with a drying device that dries washed clothes. The drying device of this embodiment includes a heat pump unit 10, a blower 11, and an air circulation duct 6. In this specification, the configuration of the air circulation duct 6 is defined based on the heat pump unit 10. In this embodiment, the blower 11 (see FIG. 2) is configured integrally with the heat pump unit 10, so the configuration of the air circulation duct 6 is defined based on the blower 11 and the heat pump unit 10.

[0017] The air circulation duct 6 includes an air circulation duct section 61 disposed upstream of the inner tank 3, an air circulation duct section 62 disposed downstream of the inner tank 3, and an exhaust device 200 that exhausts a part of the circulating air. The air circulation duct section 61 is disposed between the heat pump unit 10 and the outer tank 2, and constitutes a feed duct (first air duct) that feeds air from the heat pump unit 10 to the outer tank 2. More specifically, the air circulation duct section 61 is disposed between the outer tank 2 and the blower 11 located downstream as viewed from the heat pump unit 10, and is connected to the heat pump unit 10 via the blower 11. On the other hand, the air circulation duct section 62 is disposed between the outer tank 2 and the heat pump unit 10, and constitutes a return duct (second air duct) that returns air from the outer tank 2 side to the heat pump unit 10 side.

[0018] The feed duct 61 is composed of at least two members including an upstream feed duct portion 61a and a downstream feed duct portion 61b. The members constituting the upstream feed duct portion 61a of the feed duct 61 are mainly disposed on the back side of the washer-dryer 100 with respect to the outer tub 2. The members constituting the downstream feed duct portion 61b of the feed duct 61 are mainly disposed on the upper side of the washer-dryer 100 with respect to the outer tub 2.

[0019] That is, in this embodiment, the feed duct 61 includes an upstream feed duct portion 61a and a downstream feed duct portion 61b. The upstream feed duct portion 61a is disposed on the rear side of the washer-dryer 100 with respect to the outer tub 2, and is disposed upstream of the downstream feed duct portion 61b in the flow direction of the circulating air. The downstream feed duct portion 61b is disposed on the upper side of the washer-dryer 100 with respect to the outer tub 2, and is disposed downstream of the upstream feed duct portion 61a in the flow direction of the circulating air.

[0020] FIG. 5 is a partial enlarged view of the upper part of the washer / dryer 100 in FIG. 4, seen from the right side. The upstream feed duct portion 61a is configured to extend in the front-rear direction of the washer-dryer 100, and the downstream feed duct portion 61b is configured to extend in the up-down direction of the washer-dryer 100.

[0021] One end (upstream end) 611 of the feed duct 61 is connected to the heat pump unit 10. The other end (downstream end) is connected to a nozzle (air inlet) 2a1 provided on the front side 2a of the outer tank 2. Specifically, the one end 611 of the feed duct 61 is connected to the discharge port 11a of the blower 11. The other end 612 of the feed duct 61 is connected to the nozzle (air inlet) 2a1 via a connecting member 63a such as a bellows.

[0022] 4 and 5, one end 611 of the feed duct 61 is one end 61a1 of the upstream feed duct portion 61a, and the other end 61a2 of the upstream feed duct portion 61a is connected to one end 61b1 of the downstream feed duct portion 61b. The other end 61b2 of the downstream feed duct portion 61b is the other end 612 of the feed duct 61.

[0023] 5, the return duct 62 is disposed on the rear side of the washer-dryer 100 with respect to the outer tub 2. A bent portion 62c is provided between the upstream duct portion 62a and the downstream duct portion 62b of the return duct 62. The upstream duct portion 62a is disposed above the rotary drive shaft 51 of the inner tub 3 and extends in the left-right direction of the washer-dryer 100. The downstream duct portion 62b is disposed on the opposite side to the side where the upstream duct portion 61a of the feed duct 61 is disposed with respect to the rotary drive shaft 51 of the inner tub 3 in the left-right direction of the washer-dryer 100, and extends in the up-down direction of the washer-dryer 100.

[0024] One end (upstream end) 621 of the return duct 62 is connected to the side of the air outlet 2c2 provided on the bottom surface (rear surface) 2c of the outer tank 2, and the other end (downstream end) 622 is connected to the side of the air inlet (air inlet) 10a of the heat pump unit 10. Specifically, the one end 621 of the return duct 62 is connected to the outlet 2c2 via a connecting member such as a bellows (not shown), and the other end 622 of the return duct 62 is connected to the air inlet 10a via a connecting member 63b such as a bellows.

[0025] The configurations of the feed duct 61 and the return duct 62 are not limited to the above-mentioned configurations. The feed duct 61 and the return duct 62 may be divided into more members. Furthermore, the connecting members such as bellows used at the connecting portions of the ducts and the duct parts are provided appropriately as necessary, and the connecting portions of the ducts and the duct parts are not limited to the above-mentioned configurations.

[0026] In addition, in the description "duct A is connected to duct B," unless it is specified that they are directly connected, this includes cases where duct A and duct B are indirectly connected via a connecting member such as a bellows or other duct members.

[0027] Fig. 6 is a view of the feed duct 61 as seen from the rear side of the washer-dryer 100. Fig. 7 is a view of the feed duct 61 as seen from the left side of the washer-dryer 100.

[0028] One end 61a1 of the upstream feed duct portion 61a is directly connected to the discharge port 11a of the blower 11, and the other end 61a2 of the upstream feed duct portion 61a is directly connected to one end 61b1 of the downstream feed duct portion 61b.

[0029] In this embodiment, a portion configured of the same material as the other end 61a2 of the upstream feed duct portion 61a is regarded as the upstream feed duct portion 61a. For example, a connection member (connection part) to which one end 61a1 of the upstream feed duct portion 61a is connected may be provided at the discharge port 11a of the blower 11. Such a connection member (connection part) is regarded as a part of the discharge port 11a of the blower 11.

[0030] The upstream feed duct section 61a will be described with reference to Fig. 8. Fig. 8 is a plan view of the upstream feed duct section 61a as viewed from the rear, left side, and right side of the washer-dryer 100. In Fig. 8, the central view is called the rear view, the view arranged on the right side of the rear view (the side marked "left" in the view) is called the left side view, and the view arranged on the left side of the rear view (the side marked "right" in the view) is called the right side view.

[0031] The upstream feed duct portion 61a is made of a cylindrical member integrally molded by blow molding from one end 61a1 to the other end 61a2. That is, the upstream feed duct portion 61a is made of a cylindrical blow molded member (blow molded part).

[0032] Both ends 61a1, 61a2 of the upstream feed duct portion 61a have a circular cross section perpendicular to the extension direction (up-down direction) of the upstream feed duct portion 61a. The both ends 61a1, 61a2 of the upstream feed duct portion 61a are connected to the discharge port 11a of the blower 11 and one end 61b1 of the downstream feed duct portion 61b.

[0033] That is, in the washer / dryer 100 of this embodiment, the connection parts 61a1, 61a2 of the feed duct part (upstream feed duct part) 61a have a circular cross section perpendicular to the connection direction with the other dry air flow path parts 11a, 61b1. Here, the other dry air flow path parts to which the connection parts 61a1, 61a2 of the feed duct part 61a are connected are the discharge port 11a of the blower 11 and one end part 61b1 of the downstream feed duct part 61b.

[0034] By making the cross-sectional shape of both ends 61a1, 61a2 of the upstream feed duct portion 61a circular, it is possible to improve the sealing performance when connecting to the discharge port 11a of the blower 11 and one end 61b1 of the downstream feed duct portion 61b.

[0035] The diameter Φ1 of one end 61a1 of the upstream feed duct portion 61a is larger than the diameter Φ2 of the other end 61a2. In this way, the cross-sectional area of ​​the upstream feed duct portion 61a decreases from the upstream side to the downstream side, and the flow velocity of the dry air can be increased.

[0036] On the other hand, the upstream feed duct portion 61a has a main body portion (center portion) 61a3 between both ends 61a1, 61a2 that has a rectangular cross-sectional shape. By making the cross-sectional shape of the main body portion 61a3 rectangular, it is possible to improve the fit within the outer frame (rear panel) 1b of the washer / dryer 100.

[0037] 2, the outer tub 2 is disposed in front of the upstream feed duct portion 61a. For this reason, the main body portion 61a3 of the upstream feed duct portion 61a is formed in a shape that moves rearward to avoid the outer tub 2. In this case, the main body portion 61a3 is formed in a shape that fits along the bottom surface portion 2c and the outer frame 1b of the outer tub 2, thereby making it possible to reduce the size of the washer / dryer 100 in the front-rear direction while increasing the flow path cross-sectional area of ​​the dry air.

[0038] The main body 61a3 of the upstream feed duct portion 61a has an arc-shaped portion 61a4 that is convex from the left side to the right side in order to avoid interference with the motor 5 arranged outside the bottom surface portion 2c of the outer tank 2 (see FIG. 4). The arc-shaped portion 61a4 is formed in the range of A1 in the rear view of FIG. 8. The thickness d of the main body 61a3 gradually decreases toward the upper end of the arc-shaped portion 61a4. In order to compensate for the decrease in the flow path cross-sectional area in the main body 61a3 of the upstream feed duct portion 61a due to the gradual decrease in the thickness d, the main body 61a3 is formed in a shape in which the width w increases from one end 61a1 of the upstream feed duct portion 61a toward the arc-shaped portion 61a4. That is, the main body 61a3 widens from one end 61a1 of the upstream feed duct portion 61a toward the arc-shaped portion 61a4.

[0039] That is, in the washer-dryer 100 of this embodiment, the upstream feed duct section 61a has a circular cross-sectional shape perpendicular to the extension direction at both ends 61a1, 61a2, and has a rectangular cross-sectional portion 61a3 between both ends 61a1, 61a2. Both ends 61a1, 61a2 of the upstream feed duct section 61a are connected to the outlet 11a of the blower 11 and one end 61b1 of the downstream feed duct section 61b. By making the cross-sectional shapes of both ends 61a1, 61a2 of the upstream feed duct section 61a circular, it is possible to ensure the sealing performance at the connection parts 61a1, 61a2 and to ensure the flow path cross-sectional area in the main body section 61a3 while avoiding interference with the outer tub 2. As a result, the upstream feed duct section 61a of this embodiment can suppress a decrease in efficiency in the drying process (drying operation) and contribute to the miniaturization of the washer-dryer 100.

[0040] In the upstream feed duct portion 61a, the corners 61a5 of the portion 61a3 having a rectangular cross section are curved, thereby suppressing deformation, which is a disadvantage of blow molded products. That is, in the washer / dryer 100 of this embodiment, the feed duct portion 61a has curved corners of the portion 61a3 having a rectangular cross section.

[0041] Furthermore, upstream feed duct section 61a has recess 61a6 recessed toward the inside of the duct in portion 61a3 having a rectangular cross-sectional shape, thereby suppressing deformation, which is a disadvantage of blow molded products. That is, in the washer / dryer 100 of this embodiment, feed duct section 61a has recess 61a6 recessed toward the inside of the duct in portion 61a3 having a rectangular cross-sectional shape.

[0042] The upstream feed duct portion 61a of this embodiment can be formed into the above-mentioned complex shape by being molded by blow molding.

[0043] The connection between the upstream feed duct portion 61a and the downstream feed duct portion 61b will be described with reference to FIGS. Fig. 9 is an external view of the connection between the upstream feed duct portion 61a and the downstream feed duct portion 61b. Note that Fig. 9 shows a state immediately before the upstream feed duct portion 61a and the downstream feed duct portion 61b are connected.

[0044] The upstream feed duct portion 61a is connected to the downstream feed duct portion 61b by inserting one end 61b1 of the downstream feed duct portion 61b inside the end 61a2 of the upstream feed duct portion 61a. In this case, the upstream feed duct portion 61a and the downstream feed duct portion 61b are assembled so that the end 61a2 of the upstream feed duct portion 61a covers the outer peripheral surface of one end 61b1 of the downstream feed duct portion 61b. The arrow A1 indicates the insertion direction of the downstream feed duct portion 61b into the upstream feed duct portion 61a. In this case, it is preferable to fix either the upstream feed duct portion 61a or the downstream feed duct portion 61b, and assemble the other to the other.

[0045] The connection portion 61b1 of the downstream feed duct portion 61b, to which the upstream feed duct portion 61a is connected, has a convex portion 61c that protrudes in the radial direction. The connection portion 61a2 of the upstream feed duct portion 61a, to which the downstream feed duct portion 61b is connected, has a concave portion 61d that receives the convex portion 61c of the downstream feed duct portion 61b. The upstream feed duct portion 61a is restricted from rotating in the circumferential direction relative to the connection portion 61b1 of the downstream feed duct portion 61b by fitting the convex portion 61c and the concave portion 61d (see FIG. 11). The convex portion 61c may be provided on the connection portion 61a2 of the upstream feed duct portion 61a, and the concave portion 61d may be provided on the connection portion 61b1 of the downstream feed duct portion 61b.

[0046] The convex portion 61c and the concave portion 61d restrict the circumferential rotation of the feed duct portion 61a relative to the downstream feed duct portion 61b. Therefore, the convex portion 61c and the concave portion 61d can be used as a positioning structure when assembling the upstream feed duct portion 61a and the downstream feed duct portion 61b.

[0047] That is, in the washer / dryer 100 of this embodiment, Either the feed duct portion 61a or the other drying air flow path portion 61b has a convex portion 61c protruding in the radial direction at a connection portion 61a2, 61b1 with the other duct portion 61a, 61b. The other 61b, 61a has a concave portion 61d for receiving the convex portion 61c at a connection portion 61b1, 61a2 with the other 61a, 61b. The convex portion 61c and the concave portion 61d are fitted together, so that the feed duct portion 61a is restricted from rotating in the circumferential direction relative to the other drying air passage portion 61b.

[0048] FIG. 10 is a cross-sectional view of the connection between the upstream feed duct portion 61a and the downstream feed duct portion 61b shown in FIG.

[0049] An end (connection) 61a2 of the upstream feed duct section 61a and one end (connection) 61b1 of the downstream feed duct section 61b each have a circular cross section perpendicular to the insertion direction A1. The upstream feed duct section 61a and the downstream feed duct section 61b are arranged so that the insertion direction A1 of both of them is the up-down direction. In this case, the upstream feed duct section 61a is arranged so that its central axis 61aX is along the up-down direction (insertion direction A1) at the connection section 61a2. On the other hand, the downstream feed duct section 61b is arranged so that its central axis 61bX is along the up-down direction (insertion direction A1) at the connection section 61b1.

[0050] A packing 61e is provided at the connection parts 61a2, 61b1 between the upstream feed duct part 61a and the downstream feed duct part 61b. When a duct part molded with a blow molded member is used, dry air is likely to leak at the connection part. In particular, when dry air is pressurized to 3000 to 7000 Pa and blown, the leakage of dry air becomes significant. Therefore, it is difficult to use a blow molded duct part on the feed duct side, and it is limited to use as a return duct.

[0051] In this embodiment, the packing 61e is provided at the connection parts 61a2, 61b1 between the upstream feed duct part 61a and the downstream feed duct part 61b, so that the upstream feed duct part 61a that is blow molded can be used. In addition, the packing 61e is low-cost and easy to install in the washer-dryer 100, and is highly useful.

[0052] In the washer / dryer 100 of this embodiment, the blower 11 pressurizes the drying air to 3000 Pa or more. In particular, in this embodiment, leakage is suppressed in the feed duct 61 of the high-pressure dry air pressurized to about 7000 Pa, making it possible to use a blow-molded upstream feed duct portion 61a. In this case, it is preferable to use the upstream feed duct portion 61a molded from a material in which talc is added as a reinforcing material to polypropylene resin. This makes it possible to suppress plastic deformation of the upstream feed duct portion 61a.

[0053] In order to hold the packing 61e, the connecting portion 61b1 is provided with a holding portion 61f. The holding portion 61f is formed in an annular shape so as to be recessed from the outer circumferential surface of the connecting portion 61b1 of the downstream feed duct portion 61b toward the inside of the duct. That is, the holding portion 61f is formed as an annular groove on the outer circumferential surface of the connecting portion 61b1 of the downstream feed duct portion 61b.

[0054] As the upstream feed duct portion 61a and the downstream feed duct portion 61b are connected, the gasket 61e is covered by the connection portion 61a2 of the upstream feed duct portion 61a and is sandwiched between the connection portion 61a2 of the upstream feed duct portion 61a and the connection portion 61b1 of the downstream feed duct portion 61b.

[0055] That is, the washer / dryer 100 of this embodiment has the following features: An outer tank 2 for storing water; An inner tank 3 that is rotated inside the outer tank 2, drying devices 11, 61, and 62 each having a feed duct 61 for feeding drying air to the outer tub 2, a return duct 62 for returning drying air from the outer tub 2, and a blower 11 for feeding drying air to the feed duct 61; In the washer / dryer 100 having the washing and drying operations, The feed duct 61 includes, at least in part, a feed duct portion 61a formed of a blow molded member, The feed duct portion 61a is sealed at a connection portion 61a2 with the other dry air channel portion 61b with a packing 61e sandwiched between the feed duct portion 61a and the other dry air channel portion 61b.

[0056] According to this embodiment, the sealing performance at the connection portion 61a2 of the drying air passage formed of a blow molded product can be improved, and the productivity of the washer / dryer 100 can be improved.

[0057] A hook portion 61g is provided at the upstream end of the upstream end portion 61b1 of the downstream feed duct portion 61b. Also, an annular groove portion 61h into which the hook portion 61g engages is provided at the downstream end portion 61a2 of the upstream feed duct portion 61a. By engaging the hook portion 61g with the annular groove portion 61h, it is possible to increase the joining force between the upstream feed duct portion 61a and the downstream feed duct portion 61b. Also, by forming the upstream feed duct portion 61a from a blow molded member, it is possible to easily form the annular groove portion 61h in the upstream feed duct portion 61a.

[0058] Fig. 11 is a cross-sectional view showing a state in which the upstream feed duct portion 61a and the downstream feed duct portion 61b are connected. In Fig. 11, the packing 61e is shown in a state before being deformed by being sandwiched between the connection portion 61a2 of the upstream feed duct portion 61a and the connection portion 61b1 of the downstream feed duct portion 61b in order to clarify the relationship with the upstream feed duct portion 61a.

[0059] When the upstream feed duct portion 61a and the downstream feed duct portion 61b are connected, the convex portion 61c provided at the connection portion 61b1 of the downstream feed duct portion 61b engages with the concave portion 61d provided at the connection portion 61a2 of the upstream feed duct portion 61a, thereby positioning the upstream feed duct portion 61a and the downstream feed duct portion 61b in the circumferential direction. The hook portion 61g of the downstream feed duct portion 61b engages with the annular groove portion 61h of the upstream feed duct portion 61a, thereby enhancing the joining force between the upstream feed duct portion 61a and the downstream feed duct portion 61b.

[0060] FIG. 12 is an enlarged cross-sectional view of a portion XII in FIG. The holding portion 61f has side walls 61f1, 61f2 arranged to sandwich the packing 61e in the vertical direction (insertion direction A1) on the cross section of FIG. 12, and a bottom surface portion 61f3 arranged to connect between the side walls 61f1 and 61f2, forming a groove shape.

[0061] The side wall portion 61f1 is a side wall portion located above the side wall portion 61f2 (on the upper end side of the upstream feed duct portion 61a). The height L1 of the side wall portion 61f1 from the bottom surface portion 61f3 is greater than the height L2 of the side wall portion 61f2 from the bottom surface portion 61f3. In other words, the diameter (outer diameter) D1 of the outer peripheral edge portion of the side wall portion 61f1 is greater than the diameter (outer diameter) D2 of the outer peripheral edge portion of the side wall portion 61f2.

[0062] That is, in the laundry observation 100 of this embodiment, The connecting portion 61b1 of the other drying air passage portion 61b that receives the connecting portion 61a2 of the feed duct portion 61a has a holding portion 61f that holds the packing 61e. The retaining portion 61f has an outer diameter D1 on the rear side in the connection direction relative to the packing 61e when viewed from the feed duct portion 61a side, which is larger than an outer diameter D2 on the front side (D1>D2).

[0063] When the upstream feed duct portion 61a and the downstream feed duct portion 61b are connected, the packing 61e receives a force from the upstream feed duct portion 61a toward the rear side in the connection direction as viewed from the upstream feed duct portion 61a. By making D1>D2, it is possible to suppress the shifting of the packing 61e when the upstream feed duct portion 61a and the downstream feed duct portion 61b are connected.

[0064] The upstream feed duct portion 61a has a bent portion 61a8 at the connection portion 61a2, which bites into the packing 61e. The bent portion 61a8 extends from the outside to the inside of the holding portion 61f, and forms a V-shape extending toward the outside of the holding portion 61f after biting into the packing 61e. The bent portion 61a8 constitutes a protrusion that protrudes toward the inside of the upstream feed duct portion 61a.

[0065] That is, in the laundry observation 100 of this embodiment, The connection portion 61a2 of the feed duct portion 61a has a protruding portion 61a8 that protrudes toward the inside of the feed duct portion 61a, The protruding portion 61a8 is shaped to bite into the packing 61e around the entire periphery of the connecting portion 61a2.

[0066] In this embodiment, the protrusion 61a8 bites into the packing 61e, thereby improving the airtightness (sealing performance) at the connection portions 61a2, 61b1 between the upstream feed duct portion 61a and the downstream feed duct portion 61b.

[0067] As described above, the cross section perpendicular to the connection direction at the connection parts 61a1, 61a2 of the upstream feed duct part 61a is circular, so that the contact between the packing 61e and the protruding part 61a8 of the upstream feed duct part 61a and the contact between the packing 61e and the holding part 61f of the downstream feed duct part 61b can be improved. This improves the airtightness (sealing performance) at the connection parts 61a2, 61b1 between the upstream feed duct part 61a and the downstream feed duct part 61b.

[0068] In addition, in Figure 12, the figure shows that there is a gap between gasket 61e and bottom portion 61f3 of holding portion 61f, but gasket 61e is deformed when pressed by protrusion 61a8 and comes into contact with bottom portion 61f3 of holding portion 61f.

[0069] Fig. 13 is a diagram showing connections 61a1, 11a between the upstream feed duct portion 61a and the blower 11. Note that Fig. 13 shows a state immediately before the upstream feed duct portion 61a and the blower 11 are connected.

[0070] One end 61a1 of the upstream feed duct portion 61a is connected to the discharge port 11a of the blower 11. One end 61a1 of the upstream feed duct portion 61a serves as a connection portion connected to the discharge port 11a of the blower 11. The discharge port 11a of the blower 11 serves as a connection portion connected to the one end 61a1 of the upstream feed duct portion 61a.

[0071] The connection parts 61a1, 11a between the upstream feed duct part 61a and the blower 11 are configured similarly to the connection parts 61a2, 61b1 between the upstream feed duct part 61a and the downstream feed duct part 61b. In the above description, the connection part (end part) 61a2 of the upstream feed duct part 61a can be regarded as the connection part (end part) 61a1 of the upstream feed duct part 61a, the downstream feed duct part (another drying air flow path part) 61b can be regarded as the blower 11, and the connection part 61b1 of the downstream feed duct part 61b can be regarded as the discharge port 11a of the blower 11. Therefore, the description will be omitted here.

[0072] FIG. 14 is a perspective view showing a configuration in which a harness receiving section 7 is provided in the upstream feed duct section 61a. The upstream feed duct portion 61a is integrally provided with a harness housing portion 7. That is, in the washing observation device 100 of this embodiment, the feed duct portion 61a has the harness housing portion 7 for housing electrical wiring. The harness housing portion 7 is provided for housing electrical wiring and the like that connects an electrical device (e.g., a drying device) arranged at the lower portion of the washer / dryer 100 and a control device arranged at the upper portion.

[0073] For this purpose, the upstream feed duct portion 61a is provided with an attachment portion (fastening portion) 61a7 for attaching the harness accommodating portion 7 (see FIG. 8). The attachment portion 61a7 is molded integrally with the upstream feed duct portion 61a when the upstream feed duct portion 61a is blow molded.

[0074] A plurality of mounting portions 61a7 are provided along the vertical direction, and the harness housing 7 is fixed to the upstream feed duct portion 61a using bolts and nuts (not shown). The harness housing 7 is used to house electrical wiring and the like. For example, by storing the electrical wiring of the drying device in the harness housing 7, the electrical wiring inside the washer / dryer 100 is organized. When other parts are being assembled, the electrical wiring of the drying device does not get in the way, improving work efficiency.

[0075] By attaching a sound absorbing / insulating material to the upstream feed duct portion 61a, the heat insulation effect and the noise reduction effect can be improved.

[0076] The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the configurations. In addition, it is possible to add, delete, or replace part of the configuration of the embodiments with other configurations. [Explanation of symbols]

[0077] 2...outer tank, 3...inner tank, 7...harness housing section, 11...blower, 11a...other drying air flow path section (outlet of blower 11), 11, 61, 62...drying device, 61...feed duct, 61a...feed duct section (upstream feed duct section), 61a1...one end (connection section) of feed duct section 61a, 61a2...other end (connection section) of feed duct section 61a, 61a3...cross-sectional shape Rectangular portion (main body portion), 61a6...concave portion, 61a8...protruding portion (bent portion, V-shaped portion), 61b...other drying air flow path portion (downstream feed duct portion), 61b1...end portion (connection portion) of other drying air flow path portion, 61c...convex portion, 61d...concave portion, 61e...packing, 61f...retaining portion for packing 61e, 62...return duct, 100...washer / dryer.

Claims

1. An outer tank for storing water; an inner tank that is rotated inside the outer tank; a drying device having a feed duct for feeding drying air to the outer tub, a return duct for returning the drying air from the outer tub, and a blower for feeding the drying air to the feed duct; In a washing / drying machine having a washing operation and a drying operation, The feed duct includes, at least in part, a feed duct portion formed of a blow molded member; The washer-dryer according to claim 1, wherein a connection portion of the feed duct portion to another dry air channel portion is sealed with a packing interposed between the feed duct portion and the other dry air channel portion.

2. The washing and drying machine according to claim 1, The washer / dryer, wherein the connection portion of the feed duct portion has a circular cross section perpendicular to a direction in which the connection portion is connected to the other drying air flow path portion.

3. The washing and drying machine according to claim 2, The connection portion of the feed duct portion has a protrusion portion that protrudes toward an inside of the feed duct portion, The said protrusion part is shaped so as to bite into the said packing around the entire circumference of the said connection part.

4. The washing and drying machine according to claim 1, a connecting portion of the other drying air flow path portion that receives the connecting portion of the feed duct portion has a holding portion that holds the packing, The holding portion has an outer diameter on a rear side in a connection direction relative to the packing when viewed from the feed duct portion side, the outer diameter being larger than an outer diameter on a front side.

5. The washing and drying machine according to claim 1, one of the feed duct portion and the other drying air flow path portion has a convex portion protruding in a radial direction at a connection portion with the other, the other has a concave portion for receiving the convex portion at a connection portion with the one; The washer-dryer, wherein the feed duct portion is restricted from rotating in a circumferential direction relative to the other drying air flow path portion by fitting the convex portion and the concave portion.

6. The washing and drying machine according to claim 1, The above-mentioned feed duct portion has a circular cross-sectional shape perpendicular to the extension direction at both ends, and has a portion between the above-mentioned ends having a rectangular cross-sectional shape.

7. The washing and drying machine according to claim 6, The washer / dryer is characterized in that the feed duct portion has curved portions at corners of a portion having a rectangular cross-sectional shape.

8. The washing and drying machine according to claim 6, The washer / dryer is characterized in that the feed duct portion has a recess recessed toward the inside of the duct in a portion having a rectangular cross-sectional shape.

9. The washing and drying machine according to claim 1, The washer / dryer is characterized in that the blower increases the pressure of the drying air to 3000 Pa or more.

10. The washing and drying machine according to claim 1, The washer / dryer is characterized in that the feed duct portion is molded from a material in which talc is added as a reinforcing material to polypropylene resin.

11. The washing and drying machine according to claim 1, The washer / dryer is characterized in that the feed duct portion has a harness housing portion for housing electric wiring.

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