Washing and drying machine

Abstract

The present application provides a washing and drying machine capable of maintaining drying completion effect, reducing power consumption and realizing low noise. The washing and drying machine comprises a rotating drum (3) for accommodating clothes, an outer tub (2) in which the rotating drum is arranged, a cabinet (1) for supporting the outer tub, a door (9) which is arranged on the cabinet and is openable and closable, a sealing ring (10) which connects the cabinet and the outer tub at the front side, a circular ring-shaped part (4b) which is arranged on the outer tub and is provided with the sealing ring, a drum motor for driving the rotating drum, a blowing unit which comprises a blowing fan for sending air to the clothes in the rotating drum and a fan motor for driving the blowing fan, a nozzle which is arranged at the front side of the outer tub and blows warm air from the front of the rotating drum to the rear side, and a blowing side flow path which is arranged in the outer tub and connects the blowing unit and the nozzle. The angle θ1 between the center of the circular ring-shaped part and the setting surface (G) and the angle θ2 between the center of the rotating drum (O2) and the setting surface (G) satisfy the relationship of θ1<θ2.

Description

Technical Field

[0001] This invention relates to a washer and dryer. Background Technology

[0002] Patent document 1 describes a drum-type washer-dryer that improves the finishing effect by unfolding the folds of clothing.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2011-139924 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the washer-dryer described in Patent Document 1, a nozzle (spray outlet) is positioned in front of the rotating drum to improve the drying effect of clothes. Furthermore, the airflow velocity is increased by reducing the cross-sectional area of ​​the nozzle at the outlet of the warm air blower, thereby improving the drying effect. However, in this structure, the spray-side flow path is positioned between the rotating drum and the sealing ring. Due to this relationship, it is difficult to increase the cross-sectional area of ​​the spray-side flow path, resulting in increased flow path pressure loss and difficulty in reducing power consumption during drying.

[0008] The present invention addresses the aforementioned problems and aims to provide a washer-dryer that can maintain the drying effect, reduce power consumption, and achieve low noise.

[0009] Solution for solving the problem

[0010] The present invention is characterized by comprising: a rotating drum for storing clothes; a trough in which the rotating drum is housed; a housing for supporting the trough; a door that is slidably opened and closed in the housing; a sealing ring that connects the housing to the trough on the front side; an annular portion disposed in the trough and fitted with the sealing ring; a drum motor for driving the rotating drum; an air supply unit having an air supply fan for supplying drying air to the clothes in the rotating drum and a fan motor for driving the air supply fan; a nozzle disposed on the front side of the trough for blowing warm air from the front of the rotating drum toward the rear side; and a spray side flow path disposed in the trough for connecting the air supply unit and the nozzle, wherein the angle θ1 formed by the center of the annular portion and the ground and the angle θ2 formed by the rotation axis of the rotating drum and the ground are in the relationship that θ1 < θ2.

[0011] The effects of the invention are as follows.

[0012] According to the present invention, a washer-dryer that can maintain the drying effect, reduce power consumption, and achieve low noise can be provided. Attached Figure Description

[0013] Figure 1 This is a structural diagram showing the interior of the washer-dryer according to the first embodiment.

[0014] Figure 2 This is a perspective view showing the interior of the washer-dryer according to the first embodiment.

[0015] Figure 3 This is a side view showing the annular shape.

[0016] Figure 4 This is a cross-sectional perspective view of the ejection side flow path when viewed from the front side of the outer tank.

[0017] Figure 5 This is a cross-sectional perspective view of the ejection flow path when viewed from the drum side.

[0018] Figure 6 It is a cross-sectional view showing the ejector side flow path and its surroundings after the gate is closed.

[0019] Figure 7 It is a cross-sectional view showing the positional relationship between the roller and the annular part.

[0020] Figure 8A This is a cross-sectional view showing the air velocity distribution in the jet-side flow path of the washer-dryer according to the first embodiment.

[0021] Figure 8B This is a cross-sectional view showing the wind speed distribution in the ejector side flow path as a comparative example.

[0022] Figure 9 This is a cross-sectional view showing the washer and dryer according to the second embodiment.

[0023] Figure 10 This is a graph showing an example of the relationship between blowing force and the evaluation value of drying completion effect.

[0024] Symbol Explanation

[0025] 1—Box body, 2—Outer groove (groove), 3—Rotating roller, 4—Outer groove cover, 4b—Annular part, 6—Motor (roller motor), 9—Door, 26—Air supply unit, 26a—Air supply fan, 26b—Fan motor, 28—Ejection side flow path, 28a—First wall, 28b—Second wall, 28c—Nozzle, 28d—Direction conversion part, 28e—Opening, 50—Control device, 10—Sealing ring, O1—Center of the annular part, O2—Rotation center (rotation axis), θ1—Angle between the center of the annular part and the setting surface, θ2—Angle between the rotation axis of the rotating roller and the setting surface, θ3—Angle between the central axis of the door and the setting surface. Detailed Implementation

[0026] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the following embodiments, and various modifications and applications are also included within the scope of the technical concept of the present invention.

[0027] (First Implementation)

[0028] Figure 1 This is a structural diagram showing the internal structure of the washer-dryer according to the first embodiment. Figure 2 This is a perspective view showing the interior of the washer-dryer according to the first embodiment. Furthermore, Figure 2 The image shows the state in which the sealing ring 10 is separated from the outer casing 4.

[0029] like Figure 1 As shown, in the washer-dryer 100, the upper part of the base 1h is mainly composed of a steel plate, a side panel (not shown), and a reinforcing member (not shown) to form a frame. A front cover 1a, a lower front cover 1b, and an upper cover 1c, all made of resin molding, are then installed on top of this frame, thus forming the housing 1 (cabinet). Furthermore, a door 9 is provided on the front cover 1a for opening and closing when taking out or putting in laundry (clothes).

[0030] Inside the housing 1, roughly in the center, is an outer tank 2 (trough) for water accumulation. The outer tank 2 is formed into a bottomed cylindrical shape, and is supported by multiple shock absorbers 5 (see reference) located at the bottom. Figure 2 Elastic support. The outer tank 2 has an outer tank cover 4 installed on the front opening (door 9 side) formed on the front side. The rear side of the outer tank cover 4 is connected to the front opening of the outer tank 2 (outer tank body), and a circular opening 4a is formed on the front side for taking out and putting in laundry.

[0031] Furthermore, a rotating drum 3 (inner tank) is provided inside the outer tank 2 and is supported for rotation. The rotating drum 3 is formed into a bottomed cylindrical shape to hold laundry (clothes). The rotating drum 3 has an opening 3a on its front side. The rotation center O2 of the rotating drum 3 (see reference...) Figure 7 The front side is tilted higher than the rear side. In addition, the rotation center O2 of the rotating roller 3 can also be configured to be approximately horizontal.

[0032] Door 9 has a door glass 9a fixed to a resin door frame 9b and is mounted on the housing 1 by hinges (not shown). The door frame 9b of door 9 abuts against the periphery of a circular opening 1s formed in the housing 1. Furthermore, the door glass 9a is formed in a convex shape that extends further inward (rearward) than the opening 1s of the housing 1.

[0033] A fluid balancer 3b is provided on the outer periphery of the opening 3a of the rotating drum 3. This fluid balancer 3b is used to reduce vibration caused by the imbalance of the laundry during spin-drying. Furthermore, multiple lifters 3c are provided on the inner side of the rotating drum 3 to lift the laundry. The rotating drum 3 is directly connected to the drum drive motor 6 (drum motor). The rotating drum 3 has multiple small holes 3d in its cylindrical portion, which serves as a side wall, for centrifugal spin-drying and ventilation. The rotating drum 3 is directly connected to the rotating drum drive motor 6 (drive unit) via a main shaft 6a connected to a metal flange for the drum.

[0034] A control device 50 is installed inside the housing 1 and below the outer slot 2. This control device 50 is configured as an electronic circuit including a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), and various interfaces. Furthermore, it reads the program stored in the ROM, expands it in the RAM, and the CPU executes various processes. The control device 50 also controls the rotational speed of the blower fan 26a and the motor 6.

[0035] like Figure 2 As shown, a rubber sealing ring (door seal) 10 made of an elastomer is installed on the outer casing 4. This sealing ring 10 is formed in a generally annular shape, with its inner (rear) opening edge installed at the opening 4a of the outer casing 4, and its front (front) opening edge installed at the opening 1s of the housing 1 (see reference). Figure 1 The sealing ring 10 connects the fixed housing 1 to the elastically supported and vibrating outer groove 2, functioning as a vibration absorber to follow the amplitude of the groove during operation. When the door 9 is closed, the door glass 9a is pressed tightly against the sealing ring 10, maintaining the watertightness between the outer groove 2 and the door 9 (see reference). Figure 1 ).

[0036] Furthermore, an air supply duct 25 connecting the outer tub 2 to the air supply unit 26 is provided on the back of the outer tub 2. The air supply duct 25 is corrugated and guides airflow to the laundry inside the rotating drum 3, with its upstream end connected to the upper part of the back of the outer tub 2. The air supply unit 26 has a fan 26a (see reference) that supplies drying air to the clothes inside the rotating drum 3. Figure 1 ) and the fan motor 26b that drives the air supply fan 26a (see reference) Figure 1 The upstream end of the blower fan 26a is connected to the blower duct 25 via a drying filter (not shown). The blower unit 26 has a heater (not shown) downstream of the blower fan 26a and is connected to a duct 27 that supplies dried air into the rotating drum 3. A conical tube 27a is provided midway through this duct 27. A jetting side flow path 28 is connected downstream of the duct 27. The jetting side flow path 28 is integrally formed on the outer surface of the outer casing 4 by resin molding. The jetting side flow path 28 extends toward the opening 4a of the outer casing 4 and has a nozzle 28c (see reference) at its front end that opens toward the rotating drum 3. Figure 4 Nozzle 28c blows warm air from the front side to the rear side.

[0037] The air generated by the blower fan 26a is heated by a heater (not shown) to become warm air, which is then ejected from the nozzle 28c into the rotating drum 3 through the duct 27 and the ejection side flow path 28. The warm air blown onto the laundry becomes hot and humid air, which is then drawn into the air supply duct 25 and cooled and dehumidified by a water-cooled dehumidification mechanism (not shown) installed in the air supply duct 25 to become low-temperature air. Alternatively, a heat pump can be used instead of a heater and a water-cooled dehumidification mechanism.

[0038] An annular portion 4b for mounting the sealing ring 10 is formed on the outer groove cover 4. This annular portion 4b is integrally formed with the outer groove cover 4 by resin molding. Furthermore, the annular portion 4b is formed on the outer groove cover 4 at a position radially outward from the opening 4a. The sealing ring 10 is mounted on the end of the annular portion 4b on the outer groove 2 side (rotating roller 3 side).

[0039] Figure 3 This is a side view showing the annular shape. Furthermore, Figure 3 The image shows the state where the sealing ring 10 is separated from the annular portion 4b.

[0040] like Figure 3 As shown, the annular portion 4b is formed in a ring shape over the entire circumference on the front of the outer groove cover 4. Furthermore, the annular portion 4b has a convex portion 4b1 extending forward from the outer groove cover 4 and a flange portion 4b2 extending radially outward from the convex portion 4b1, forming an L-shape in cross-section.

[0041] The sealing ring 10 has a mounting portion 10a that fits into the edge of the outer groove cover 4 and is mounted on the annular portion 4b. The annular portion 4b is fitted with the mounting portion 10a by elastically deforming the mounting portion 10a to cover the outside of the annular portion 4b.

[0042] Figure 4 This is a sectional perspective view of the ejection side flow path observed from the front side of the outer tank. Figure 5 This is a cross-sectional perspective view of the ejection flow path when viewed from the drum side.

[0043] like Figure 4 As shown, the surface of the ejection side flow path 28 facing approximately the front of the outer casing 4 forms a first wall portion 28a, which constitutes part of the ejection side flow path 28. In other words, the ejection side flow path 28 and the outer casing 4 share components. Furthermore, the second wall portion 28b of the ejection side flow path 28, which faces the front of the first wall portion 28a, constitutes another part of the ejection side flow path 28. Moreover, the ejection side flow path 28 is formed with a rectangular flow path cross-section, and is configured such that the flow path cross-section gradually decreases towards the nozzle 28c at the front end.

[0044] like Figure 5 As shown, the ejection side flow path 28 is configured such that a direction conversion part 28d for changing the direction of the flow path is formed at the opening 3a of the rotating drum 3, and the opening 28e of the nozzle 28c faces into the rotating drum 3.

[0045] Furthermore, the nozzle 28c is configured such that the flow path cross-sectional area of ​​the opening 28e at its front end becomes the minimum cross-sectional area S in the ejection side flow path 28. Moreover, the minimum cross-sectional area S is... Figure 5 The area is indicated by a horizontally elongated square solid line. Furthermore, the minimum cross-sectional area S is, for example, 401 mm². 2 .

[0046] Figure 6 It is a cross-sectional view showing the ejector side flow path and its surroundings after the gate is closed.

[0047] like Figure 6 As shown, when door 9 is closed, door glass 9a enters the annular opening of sealing ring 10 and is pressed in. Thus, door glass 9a is tightly pressed against sealing ring 10. Furthermore, sealing ring 10 is located between housing 1 and ejection side flow path 28 in an elastically deformable state. Also, although not shown, in areas where ejection side flow path 28 is not provided, sealing ring 10 is located between housing 1 and outer casing 4 in an elastically deformable state.

[0048] Figure 7 This is a cross-sectional view showing the positional relationship between the roller and the annular portion. Furthermore, Figure 7In the diagram, the dashed line indicated by symbol A shows the position of the rotating roller 3 when viewed from the side, and the dashed line indicated by symbol B shows the position of the annular portion 4b when viewed from the side. Furthermore, symbol O2 indicates the center of rotation of the rotating roller 3, and symbol O1 indicates the center (radial center) of the annular portion 4b.

[0049] like Figure 7 As shown, when the angle between the center O1 of the annular portion 4b and the setting surface G (ground) is set to θ1, and the angle between the rotation center O2 of the rotating roller 3 and the setting surface G (ground) is set to θ2, the configuration is such that θ1 < θ2. For example, θ1 is set to 2.5°, and θ2 is set to 4°. Furthermore, θ2 is 45° or less.

[0050] By defining the relationship between θ1 and θ2 in this way, the space between the rotating drum 3 and the sealing ring 10 can be expanded. This increases the cross-sectional area of ​​the ejection side flow path 28 upstream of the nozzle 28c, thereby reducing flow path pressure loss during drying operation and lowering power consumption. Furthermore, because flow path pressure loss is reduced, the rotational speed (rotational speed) of the air supply fan 26a in the air supply unit 26 can be suppressed while maintaining the required mass airflow and air velocity, achieving low noise. Therefore, a washer-dryer 100 that maintains high drying completion efficiency while reducing power consumption and achieving low noise can be provided.

[0051] Furthermore, the nozzle 28c and the ejection side flow path 28 are positioned at the horizontal center O of the outer groove 2 (see reference). Figure 1 The position is located at the top. As a result, the spray side flow path 28 can be expanded from the center O side in the horizontal direction, thereby achieving a higher drying completion effect, lower power consumption, and lower noise.

[0052] Figure 8A This is a cross-sectional view showing the air velocity distribution in the jet-side flow path of the washer-dryer of this embodiment. Figure 8B This is a cross-sectional view showing the wind speed distribution in the ejector side flow path as a comparative example. Furthermore, Figure 8A and Figure 8B In the diagram, wider-spaced diagonal lines indicate lower wind speeds, while narrower-spaced diagonal lines represent higher wind speeds. Furthermore, Figure 8B The ejection side flow path 200 shown is the case where the angle θ1 between the center of the annular part and the setting surface is the same as the angle θ2 between the rotation axis of the rotating drum 3 and the setting surface.

[0053] like Figure 8B As shown in the comparative example, when θ1 and θ2 are the same, the wind speed increases from the middle of the ejection side flow path 200, and further increases over a larger range near the nozzle 101. In contrast, in Figure 8AIn this implementation, the wind speed does not decrease until before nozzle 28c, thereby suppressing the flow path pressure loss to a low level.

[0054] Specifically, the minimum cross-sectional area S of nozzle 28c is set to 401 mm. 2 The volume and air volume of the warm air are 1.7m³. 3 Volume / flow path pressure loss of ejection side flow path 28 at / min.

[0055] Regarding the volume, it is 104.3 cm in the ejection side flow path 200 (comparative example). 3 In contrast, the ejection side flow path 28 (in this embodiment) is 151cm. 3 In other words, the volume of the ejection side flow path 28 can be approximately 1.46 times.

[0056] Regarding the flow path pressure drop, it is 5000 Pa in the ejection side flow path 200 (comparative example), and 4000 Pa in the ejection side flow path 28 (this embodiment). That is, the flow path pressure drop of the ejection side flow path 28 can be reduced by about 20%.

[0057] (Second Implementation)

[0058] Figure 9 This is a cross-sectional view showing the washer and dryer according to the second embodiment.

[0059] like Figure 9 As shown, the angle θ3 formed by the central axis O3 of door 9 and the setting surface G (ground) and the angle θ2 formed by the rotation center O2 of rotating roller 3 and the setting surface G (ground) are in the relationship that θ3 < θ2. For example, θ3 is set to 2.5° and θ2 is set to 4°.

[0060] By defining the relationship between θ3 and θ2 in this way, the space between the rotating drum 3 and the sealing ring 10 can be expanded. This allows for an increase in the cross-sectional area of ​​the ejection side flow path 28 upstream of the nozzle 28c, thereby reducing flow path pressure loss during drying operation and lowering power consumption. Furthermore, because flow path pressure loss is reduced, the rotational speed (rotational speed) of the air supply fan 26a in the air supply unit 26 can be suppressed while maintaining the required mass airflow and velocity, achieving low noise. Therefore, a washer-dryer 100 that maintains high drying completion efficiency while reducing power consumption and achieving low noise can be provided.

[0061] This invention is not limited to the embodiments described above, and can be appropriately modified without departing from the spirit of the invention. For example, in the above embodiments, a washer-dryer with the rotation center O2 of the rotating drum 3 facing forward and upward washer-dryer was described as an example, but it can also be applied to a washer-dryer with the rotation center O2 of the rotating drum 3 horizontal. In this case, the center O1 of the annular portion 4b is tilted forward and downward (vertical direction). With this structure, the space between the rotating drum 3 and the sealing ring 10 can be increased, a higher drying completion effect can be maintained, power consumption can be reduced, and low noise can be achieved.

[0062] Figure 10 This is a graph showing an example of the relationship between blowing force and the evaluation value EV of drying completion effect. Figure 10 In the figure, the horizontal axis represents the blowing force [N], and the vertical axis represents the evaluation value EV.

[0063] To improve the EV (Evaluation Value) of the drying completion effect, it is preferable to directly blow air onto the garments. Furthermore, increasing the blowing force, which is the force that unfolds the wrinkles, has a significant impact on improving the EV. Here, the blowing force is a value calculated as "mass air volume × average air velocity at the nozzle 28c (hereinafter referred to as the nozzle outlet)". Figure 10 The characteristics were determined through experiments using a 3kg load of laundry. Furthermore, a 3kg load is equivalent to two days' worth of laundry for an average adult. The airflow and velocity were calculated at a temperature of 20°C and a relative humidity of 60%.

[0064] In this embodiment, the blowing force and the evaluation value (EV) are approximately directly proportional. By setting the blowing force to 0.8 [N] or higher, the evaluation value (EV) can be set to "4" or higher. That is, even without ironing, a beautiful drying finish without deep wrinkles can be achieved.

Claims

1. A drum-type washer-dryer, characterized in that, have: A rotating drum for storing clothes; The groove contains the aforementioned rotating roller; The housing supports the aforementioned groove; The door, which opens and closes freely, is located within the aforementioned enclosure; A sealing ring connects the aforementioned housing to the aforementioned groove on the front side; An annular portion is provided in the groove and the sealing ring is installed thereon; A drum motor that drives the aforementioned rotating drum; An air supply unit has an air supply fan that supplies air for drying to the clothes inside the rotating drum and a fan motor that drives the air supply fan. A nozzle, positioned at the front of the aforementioned groove, blows warm air from the front of the rotating roller toward the rear; and A side-flow path, disposed within the aforementioned groove, connects the aforementioned air supply unit to the aforementioned nozzle. The angle θ1 between the center of the aforementioned annular portion and the ground and the angle θ2 between the rotation axis of the aforementioned rotating drum and the aforementioned ground are related as θ1 < θ2.

2. The drum-type washer-dryer according to claim 1, characterized in that, The product of the mass air volume and air velocity of the warm air blown from the above nozzles onto the clothing is 0.8N or more.

3. The drum-type washer-dryer according to claim 1, characterized in that, The nozzle and the ejection side flow path are positioned above the horizontal center of the groove.

4. The drum-type washer-dryer according to claim 1, characterized in that, The angle θ3 formed by the central axis of the aforementioned door and the aforementioned ground is θ3 < θ2.

Images