JP3598278B2 - Washing and drying machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a washing and drying machine.
[0002]
[Prior art]
The outer tub is installed so as to be suspended in the outer frame by the anti-vibration support device, and air is circulated through the washing and dewatering tub after the dewatering process to the washing machine provided with the washing and dewatering tub and the stirring blade in the outer tub. A washing / drying machine to which a means for drying the laundry in the washing / dewatering tub has been added has been proposed.
[0003]
The drying means of this washing and drying machine is provided with a cooling fan for water-cooled and dehumidified in an air passage that guides air sucked from a suction port formed at a lower portion of the outer tub to the circulating fan. The washing and dewatering tub is blown into the upper opening.
[0004]
[Problems to be solved by the invention]
This type of washing / drying machine has a configuration in which a drying unit is added to the washing machine, and there is a problem that the structure is complicated.
[0005]
One object of the present invention is to propose a washing / drying machine capable of rationally installing a circulation fan in a circulation air passage.
[0006]
[Means for Solving the Problems]
The present invention suctions air in the outer tub from a suction port provided in a lower portion of an outer tub containing the washing and dewatering tub, and sucks the sucked air from a blowing port provided to face an upper opening of the washing and dewatering tub. In the washing and drying machine which forms a circulation air path to be blown into the washing and dewatering tub to dry the laundry in the washing and dewatering tub, the circulation air path is formed integrally with the outer tub on the outer peripheral side of the outer tub. The circulating fan, which is provided in the circulating air passage and generates circulating air, has a suction port and a blowing port fitted to the air path duct by being attached to a lower side of the outer tank. It is characterized in that it is configured to match.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention provides an outer tub having a washing and dewatering tub installed therein, and sucking air in the outer tub from a suction port provided at a lower portion of the outer tub, and sucking the sucked air into an upper opening of the washing and dewatering tub. A circulating air passage that blows into the washing and dewatering tub through a blowing port provided in front of the tub, a water-cooling and dehumidifying means for water-cooling and dehumidifying circulating air sucked from the outer tub into the circulating air passage, and heating for heating the water-cooled and dehumidified circulating air. Means, the circulating air path includes an air path duct integrally formed with the outer tub on the outer peripheral side of the outer tub, and is installed in the circulating air path to generate circulating air. The circulation fan having a suction port and a discharge port is formed so as to surround the suction side of the impeller in an open form, and is attached to the outer tank so as to be located below the outer tank. The outlet side casing and the outlet It can be carried out in configuration with the suction side casing forming an air passage from the suction port portion covering the opening of the side casing to the suction side of the impeller.
[0008]
The outlet side casing is formed so that the suction port and the outlet are fitted to the lower end of the air duct in a state where the outlet side casing is attached to the lower side of the outer tub. It is desirable. This fitting is desirably performed by providing a fitting groove and a ridge on the peripheral portion of the blowout side casing and the suction side casing.
[0009]
In addition, it is desirable that the electric motor for driving the impeller be configured to be attached to the blowout side casing.
[0010]
Further, it is desirable that a configuration is adopted in which a partition plate that partitions between the suction side and the blowout side of the impeller is sandwiched between the blowout side casing and the suction side casing.
[0011]
Further, it is preferable that the suction side casing has a configuration provided with a drain outlet.
[0012]
An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing a vertical section of a washing and drying machine according to an embodiment of the present invention.
[0013]
Reference numeral 1 denotes a rectangular cylindrical outer frame that forms the outer shell. Reference numeral 2 denotes a washing and dewatering tub, which has a small hole 2a for water and air ventilation on its peripheral wall, a fluid balancer 3 on its upper edge, and a rotatable stirring blade 4 inside the bottom. I do. The stirring blade 4 has a small hole 4a for water passage and ventilation. Reference numeral 5 denotes an outer tub that contains the washing and dewatering tub 2. A drive device 6 is attached to the outer side of the bottom by a steel plate-attached base 7, and is fixed to four corners at the upper end of the outer frame 1. The outer tub 5 is evenly suspended from all sides by the anti-vibration support device 8 to support the outer tub 5 so as to be suspended from the center of the outer frame 1.
[0014]
The drive device 6 has a built-in drive motor, an electric operation clutch mechanism, and a planetary gear reduction mechanism, and rotates the stirring blades 4 in a state where the washing and dewatering tub 2 is stationary (stirring mode), and stirs with the washing and dewatering tub 2. It has a selective driving function of rotating the blades 4 in opposite directions (selection mode) and rotating the washing / dewatering tub 2 and the stirring blade 4 integrally in the same direction (dehydration / drying mode).
[0015]
The top cover 9 formed with the outer garment inlet 9a is fitted into the opening edge so as to cover the upper opening of the outer frame 1, and is attached to the outer frame 1 together with the front panel 10 and the back panel 11 by mounting screws.
[0016]
A front panel box 12, which is a front storage portion formed between the top cover 9 and the front panel 10, has a power switch 13, an operation panel 14 including an input switch group and a display element group, and an operation panel 14 in the outer tank 5. A water level sensor 15 for generating a water level signal corresponding to the water level and a control unit 16 are built in. These constitute a control device.
[0017]
In a back panel box 17 which is a rear storage portion formed between the top cover 9 and the back panel 11, a washing water supply means and a high-concentration detergent liquid generation / supply means described later are housed side by side.
[0018]
The washing water supply means is constituted by a main water supply solenoid valve 20 having an inlet side connected to the faucet connection port 18 and an outlet side connected to the water inlet 19.
[0019]
The high-concentration detergent liquid generating / supplying means supplies the detergent dissolving water to the detergent dissolving container 21 from the auxiliary water supply solenoid valve 22 and agitates the powder synthetic detergent charged in the detergent dissolving container 21 while stirring the detergent dissolving water. To form a high-concentration detergent solution. The diluted solution is overflowed from the detergent dissolving vessel 21 while being diluted with further water supply, and supplied to the water inlet 19, and a finishing agent charging chamber attached to the detergent dissolving vessel 21 (details will be described later). ), The water is supplied to the inlet 19 by overflowing.
[0020]
The water inlet 19 penetrates the bottom of the top cover 9 and the rear part of the outer tub upper cover 28 of the outer tub 5 and opens toward the upper opening of the washing and dewatering tub 2. The water inlet 19 has a flexible tube 19a (see FIG. 3) interposed between the bottom of the top cover 9 and the outer tank upper cover 28.
[0021]
The hot air circulating drying means is formed so as to extend vertically upward along a rear outer wall surface of the outer tub 5 from a suction port 5 a formed in a lower side wall of the outer tub 5, and from the suction port 5 a. A water-cooling dehumidifying duct 23 that is a dehumidifying air passage for blocking the infiltrated washing water; and a cooling water sprinkling part 24 that is a water-cooling dehumidifying unit that is located at an upper part in the water-cooling dehumidifying duct 23 and supplies cooling water into the duct. A descending air duct 25, which is a descending air duct that extends vertically toward the lower side of the outer tub 5 along the outer wall surface of the outer tub 5 at a position higher than the water level of the outer tub 5 in the washing process. A circulating fan 26 arranged in a space below the outer tub 5 and sucking air from the descending air duct 25 into the suction port to generate circulating air; Upright along the outer wall And a heating means installed on an outer tub upper cover 28 attached to the upper end of the outer tub 5 to heat the circulating air sent from the ascending air duct 27. And a blowing port 30 for blowing heated circulating air into the washing and dewatering tub 2.
[0022]
The water-cooling dehumidifying duct 23, the descending duct 25, and the rising duct 27, which constitute the circulation duct, are arranged on the outer wall surface on the rear side of the outer tank 5 in the circumferential direction of the outer tank 5, and a part of the duct is arranged outside. The back lid 1a, which is formed integrally with the tank 5 and mounted thereon, and covers the outside thereof, is formed into a shape which swells outward and is screwed.
[0023]
Further, a humidity sensor 40 and a first temperature sensor 41 are installed in the descending air duct 25, and a second temperature sensor 42 is installed in an air duct between the blowout port 30 and the downstream side of the heater 29.
[0024]
Although illustration is omitted here, a lint collecting means, which will be described later, is provided at a portion where the water-cooled dehumidifying duct 23 is turned back to the descending air duct 25.
[0025]
An outer garment inlet 9a formed in the top cover 9 is openably and closably covered by an outer lid 31 attached to the top cover 9 by a hinge 31a so as to open in two (mountain fold). The inner garment inlet 28a formed in the upper tank cover 28 is configured to be openably and closably covered by an inner lid 32 attached to the outer tank upper cover 28 by a hinge 32a.
[0026]
A drain port 5 b formed at the bottom of the outer tub 5 is connected to a drain hose 34 via a drain solenoid valve 33. The air trap 5c is connected to the water level sensor 15 via an air tube 35. A base 37 made of a synthetic resin having legs 36 attached to four corners is attached to the lower edge of the outer frame 1.
Reference numeral 38 denotes the laundry put into the washing and dewatering tub 2.
[0027]
In this washer / dryer, the power switch 13 is turned on, the outer lid 31 and the inner lid 32 are opened, the laundry 38 is put into the washing / dewatering tub 2, the outer lid 31 and the inner lid 32 are closed, and the operation panel 14 is closed. When the washing start switch is turned on, the control unit 16 detects the amount of cloth by operating the driving device 6 and rotating the stirring blade 4 with the washing and dewatering tub 2 stationary, and detects the amount of washing water and the corresponding amount of washing water. The amount of the detergent is determined, and the display element group 14b of the operation panel 14 is controlled so as to display the amount.
[0028]
Then, the outer lid 31 is opened, and a corresponding amount of the powdered synthetic detergent and the finishing agent are put into the detergent dissolving container 21, and when the outer lid 31 is closed, the auxiliary water supply electromagnetic valve 22 is opened to dissolve the powdered synthetic detergent. A suitable amount of tap water (detergent dissolving water) is supplied to the detergent dissolving container 21, and the detergent synthetic motor 39 is operated to dissolve the powder synthetic detergent while stirring to produce a high concentration detergent solution.
[0029]
During this time, the main water supply solenoid valve 20 is opened and water is supplied by controlling the driving device 6 to slowly rotate the washing and dewatering tub 2 and the stirring blade 4 to rotate the laundry 38, thereby supplying tap water to the laundry 38. , So that the laundry 38 is moistened. At this time, the amount of water supply is controlled so that the laundry 38 is stopped to such an extent that the laundry 38 can be uniformly wetted.
[0030]
Next, the auxiliary water supply electromagnetic valve 22 is opened to supply additional water to the detergent dissolving container 21, thereby overflowing the high-concentration detergent liquid in the detergent dissolving container 21 and supplying it to the water inlet 19, and the main water supply electromagnetic valve 20. Is opened and supplied to the water inlet 19, so that the high-concentration detergent liquid is diluted to a desired detergent concentration (in the range of 5 to 30 times) and is controlled to fall on the laundry 38. At this time, the washing and dewatering tub 2 and the stirring blade 4 are integrally and slowly rotated so that the high-concentration detergent liquid uniformly falls on the laundry 38 and is uniformly immersed in the laundry 38. The driving device 6 is controlled so that the laundry 38 is rotated or agitated by rotating the agitating blades 4 while the dewatering tub 2 is stationary.
[0031]
As described above, when the high-concentration detergent solution, which is formed by dissolving the powdered synthetic detergent in water and further diluted at a concentration of 5 to 30 times, is immersed in the laundry 38, the chemical detergency of the detergent component is increased. Effectively acts on dirt to increase detergency.
[0032]
After the high-concentration detergent liquid is submerged in the laundry 38, the main water supply solenoid valve 20 and the auxiliary water supply solenoid valve 22 are controlled so as to supply the washing water to a predetermined water level. Then, the driving device 6 is controlled so as to execute the washing step of applying mechanical force to the laundry 38 by rotating the stirring blade 4 forward and backward in the opposite direction.
[0033]
After the washing process is completed, the drain solenoid valve 33 is controlled to open so as to drain the washing water out of the machine, and the washing and dewatering tub 2 and the stirring blades 4 are integrally rotated at a high speed to centrifugally dehydrate the washing water. The driving device 6 is controlled so as to perform the intermediate dehydration. After the completion of the intermediate dehydration, the drainage electromagnetic valve 33 is controlled to close, the main water supply electromagnetic valve 20 is controlled so as to supply water to a predetermined rinsing water level, and the washing and dewatering tub 2 and the stirring blade 4 are further controlled. The driving device 6 is controlled so as to perform a rinsing step of rotating the laundry 38 by applying a mechanical force to the laundry 38 by rotating the laundry forward and backward in opposite directions. This rinsing step is performed a plurality of times as necessary, and the auxiliary water supply electromagnetic valve 22a is opened to supply the finishing agent when water is supplied in the last rinsing.
[0034]
After the rinsing step is completed, the drain solenoid valve 33 is controlled so as to drain the rinsing water out of the machine, and after the draining, the washing and dewatering tub 2 and the stirring blade 4 are integrally rotated at a high speed to discharge the rinsing water. The drive device 6 is controlled so as to perform final dehydration by centrifugal dehydration.
[0035]
The driving device 6 is controlled to rotate the washing / dewatering tub 2 and the stirring blade 4 integrally or in opposite directions so that the laundry 38 thus washed and centrifugally dehydrated is dried in the washing / dewatering tub 2. The operation of the circulating fan 26 is controlled such that the humid air in the outer tub 5 and the washing and dewatering tub 3 is sucked out from the suction port 5a and the circulating air is blown into the washing and dewatering tub 2 from the blowing port 30. A hot air drying step of controlling the water spray solenoid valve 24a of the cooling water sprinkling section 24 so as to water-cool the air in the water cooling dehumidification duct 23 and controlling the heater 29 to heat the air blown into the washing and dewatering tub 2 is executed. . The control of the hot air drying step is performed while monitoring the detection signals of the humidity sensor 40, the first temperature sensor 41, and the second temperature sensor 42, and ends when a desired degree of drying is obtained.
[0036]
2 to 4 show a specific configuration of the washing and drying machine described above. FIG. 2 is a vertical side view of the washing and drying machine, and FIG. FIG. 4 is a rear view of the washing / drying machine shown in FIG. 4, and FIG. A part of the description overlapping with the description of FIG. 1 is omitted.
[0037]
The rotation drive device 6 includes a central output shaft 64 to which the reversible drive motor 61, the electric operation clutch mechanism 62, the sun gear reduction mechanism 63 and the stirring blade 4 are connected, and an outer output shaft 65 to which the washing and dewatering tub 2 is connected. Is provided. The sun gear reduction mechanism 63 includes a carrier that supports the sun gear directly connected to the drive motor 61, the internal gear and the planetary gear directly connected to the outer output shaft 65, and is directly connected to the center output shaft 64. Then, by controlling the electric operation clutch mechanism 62 to the stirring mode, the rotational force of the drive motor 61 in a state where the internal gear of the sun gear reduction mechanism 63 (connected to the outer output shaft 65 and the washing and dewatering tub 2) is stationary. Is reduced via the sun gear, the planetary gears, and the carrier and transmitted to the center output shaft 64 to rotate the stirring blade 4 in the forward and reverse directions, and to control the electric operation clutch mechanism 62 to the washing mode. The inner gear (connected to the outer output shaft 65 and the washing and dewatering tub 2) is rotated freely to transmit the rotational force of the drive motor 61 to the central output shaft 64 by reducing the rotational force via the sun gear, the planetary gears and the carrier. Thus, the stirring blade 4 is rotated forward and reverse, and the reaction force acting on the internal gear is transmitted to the outer output shaft 65 to rotate the washing and dewatering tub 2 in a direction opposite to the stirring blade 4, and the electric operation clutch mechanism 6 is rotated. In the dehydration / drying mode, the sun gear and the internal gear of the sun gear reduction mechanism 63 are directly connected to the drive motor 61, and the rotational force of the drive motor 61 is transmitted via the center output shaft 64 and the outer output shaft 65. The washing and dewatering tub 2 and the stirring blade 4 are transmitted to rotate them integrally.
[0038]
The vertical portion of the water-cooling dehumidifying duct 23 in the circulation air passage is arranged along the outer tank 2 so as to be located at the last part of the cylindrical outer tank 5, that is, the part closest to the back lid 1 a of the outer frame 1. It is formed continuously from the periphery of the suction port 5a on the side wall of the tank 2 and integrally with the side wall. The water-cooled dehumidifying duct 23 is formed in a rectangular air path cross-sectional shape having a reduced depth and a wider width so as to be suitable for being disposed in a narrow space between the outer tub 2 and the rear lid 1a. Since the water cooling / dehumidifying duct 23 having a wide and substantially rectangular air path cross section has a wide wall surface, the number of circulating air cooling wall surfaces increases, and thus is suitable for cooling and dehumidifying circulating air.
[0039]
The vertical portion of the downdraft duct 25 is formed integrally with the side wall of the outer tub 5 so as to be adjacent to the water-cooling dehumidification duct 23 and to be a common side wall with the water-cooling dehumidification duct 23. This position is separated from the back lid 1a by the curvature of the outer tub 5, so that the cross-sectional shape of the air path is formed to have a substantially square shape with an increased depth and a reduced width, thereby suppressing the expansion of the horizontal width of the circulation air path. The configuration is as follows.
[0040]
The vertical portion of the updraft duct 27 is formed integrally with the side wall of the outer tub 5 so as to be a common side wall with the water-cooled dehumidifying duct 23 on the side next to the water-cooled dehumidifying duct 23. This position is separated from the back lid 1a by the curvature of the outer tub 5, so that the cross-sectional shape of the air path is formed to have a substantially square shape with an increased depth and a reduced width, thereby suppressing the expansion of the horizontal width of the circulation air path. The configuration is as follows.
[0041]
The outer surface of each of the ducts 23, 25, 27 integrally formed on the rear side wall of the outer tank 5 along the rear side wall of the outer tank 5 is a bulging portion of the rear lid 1a constituting the rear side wall of the outer frame 1. Is formed in a substantially linear shape so as to face the inside of the inside at a predetermined interval. The outer tub 5 is uniformly suspended from four sides by four anti-vibration supporting devices 8 locked to reinforcing members 1b connected to the four corners at the upper end of the outer frame 1. It is supported so as to be suspended at the center of the frame 1.
[0042]
An upper turn-back member 44 for communicating the vertical portion of the water-cooling dehumidifying duct 23 with the upper end of the descending air duct 25 is extended to the rear of the upper surface of the outer tank upper cover 28 attached to the upper end of the outer tank 5 to catch lint. The lint filter 45 constituting the collecting means is stored so as to be obliquely insertable / removable from above the inner lid 32.
[0043]
A blow-off port 30 communicated with the upper end of the vertical portion of the updraft duct 27 protrudes to the rear of the upper surface of the outer tank upper cover 28, and has a built-in heater 29 for washing heated circulating air. The outer tub upper cover 28 is pierced so as to blow into the washing and dewatering tub 2 in a direction opposite to the rotation direction of the dewatering tub 2, and is opened to face the opening of the washing and dewatering tub 2. The heater 29 employs a PTC heater, and is installed obliquely so that the ventilation path is inclined in the vertical direction to reduce the height of the air inlet 30, thereby suppressing an increase in the height of the body.
[0044]
The outer tub upper cover 28 has a two-layer structure in which a lower resin molded member and an upper metal plate (stainless steel plate) are superimposed. If necessary, the blowing port 30 and a part of the upper folded member 44 may be formed of resin. It is integrally molded with the molding member 28. The metal plate functions as a reinforcing and heat-resistant member.
[0045]
The circulation fan 26 includes a centrifugal impeller 54, an electric motor 55 for rotating the centrifugal impeller 54, and a blowing-side casing 51 surrounding the centrifugal impeller 54, which will be described in detail later. By being attached to the lower side, the drive unit 6 is arranged in a space formed below the outer tub 5 in the outer frame 1 so as to be located on the rear side. The suction side casing 52 has a drain outlet 52b. The circulation fan 26 is connected to lower end portions of the descending air duct 25 and the rising air duct 27.
[0046]
FIG. 5 is a perspective view showing an integral form of the outer tub 5 and the ducts 23, 25, 27.
[0047]
The vertical portions of the outer tub 5 and the ducts 23, 25, 27 are integrally formed of a synthetic resin. The lower ends of the downdraft duct 25 and the updraft duct 27 are molded in an open state, and the circulating fan 26 is attached to the lower side of the outer tub 5. The lower end of the duct 25 and the lower end of the rising duct 27 are fitted.
[0048]
Next, the circulation fan 26 will be described with reference to FIGS. FIG. 6 is a vertical sectional side view of the circulation fan, showing a part of the parts disassembled, FIG. 7 is a vertical sectional side view showing the disassembly of the circulation fan, and FIG. 8 is an inner surface of the blowout side casing, the partition plate, and the suction side casing. FIG.
[0049]
The circulation fan 26 includes a blowing-side casing 51, a suction-side casing 52, a partition plate 53, a centrifugal impeller 54, and an electric motor 55.
[0050]
The outlet casing 51 includes a suction port 51a, a discharge port 51b, an impeller chamber 51c for accommodating the centrifugal impeller 54, and a blow air path connecting the impeller chamber 51c and the outlet 51b. A portion 51d, a motor mounting portion 51e, a mounting leg portion 51f to the outer tub 5, a suction side casing screw coupling portion 51g, and a peripheral fitting groove 51h for fitting the suction side casing 52 in an airtight state are provided. The suction port portion 51a is a tubular portion that extends upward and penetrates the air path, and has an upper end formed in a form to be fitted to a lower end of a descending air path duct 25 formed in the outer tub 5. The outlet 51b is a cylindrical portion that extends upward and penetrates the air passage, and has an upper end formed in a form to be fitted to a lower end of a rising air duct 27 formed in the outer tub 5. The opening communicates with the impeller chamber portion 51c via the blow-out air passage portion 51d and opens downward together with these. The motor mounting portion 51e is formed so as to be located above and outside the impeller chamber portion 51c, and the rotating shaft 55a of the electric motor 55 attached to the motor mounting portion 51e penetrates through the impeller chamber portion 51c to form the impeller chamber. In this configuration, the centrifugal impeller 54 installed in the portion 51c is attached so as to fit. A plurality of mounting legs 51f are provided around the motor mounting portion 51e, and are screwed to the bottom of the outer tub 5 from below so that the motor 55 does not come into contact with the bottom of the outer tub 5. It is.
[0051]
The suction side casing 52 includes a suction air passage 52a, a drain outlet 52b formed in the suction air passage 52a, a blow air passage cover 52c, a screw coupling portion 52d, and a peripheral fitting protrusion 52e. . Then, the suction-side casing 52 is fitted below the outlet-side casing 51 with the partition plate 53 interposed therebetween such that the peripheral fitting projection 52e is fitted into the peripheral fitting groove 51h, and the screw coupling portions 51g and 52d are screwed. By the stop connection, the suction air path 52a forms a suction air path communicating the suction port 51a and the suction side of the centrifugal impeller 54, and the blow air path cover 52c covers the blow air path 51d and A blowing air path is formed to connect the blowing side of the impeller 54 and the blowing port 51b.
[0052]
Incidentally, the partition plate 53 has a suction opening 53a, and is located between the impeller chamber portion 51c and the suction air passage 52a such that the suction opening 53a faces the suction side of the centrifugal impeller 54. And the air path on the blow-out side are separated.
[0053]
Such a circulation fan 26 is assembled by inverting the outer tub 5 and stacking the outer tub 5 with the bottom thereof facing upward. Specifically, the electric motor 55 is screwed and attached to the electric motor attachment portion 52e of the blowout side casing 51. The outlet side casing 51 to which the electric motor 55 is attached is turned upside down, and the attachment leg 51f is screwed in accordance with the attachment seat of the outer tub 5. At this time, a state in which the suction port 51a is fitted to the lower end of the downward air duct 25 facing upward, and the outlet 51b is fitted to the lower end of the upward duct 27 upward. And Thereafter, the centrifugal impeller 54 is mounted on the rotating shaft 55a and installed in the impeller chamber portion 51c. Subsequently, the partition plate 543 is placed thereon. The assembly and installation are completed by screwing the 51g and 52d together.
[0054]
The circulation fan 26 can be modified so as to be attached to the bottom of the outer tub 5 after being assembled in a single state in advance. Specifically, the circulating fan is formed by projecting the mounting leg portion 51f at a position protruding from the outer periphery, and assembling the electric motor 55, the centrifugal impeller 54, the partition plate 53, and the suction side casing 52 based on the blowout side casing 51. 26 is assembled in a single state, and is attached to the bottom of the outer tub 5 by the attachment leg 51f, so that the inlet port 51a and the outlet port 51b are deformed and fitted to the air ducts 25 and 27. You can also.
[0055]
As described above, the circulation fan 26 can be assembled and attached so as to be configured with a small number of parts and connected to the circulation air passage, so that rational installation is possible.
[0056]
【The invention's effect】
According to the present invention, the circulation fan can be rationally installed in the circulation air passage.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of a washing and drying machine according to the present invention.
FIG. 2 is a vertical sectional side view showing a specific configuration of the washing / drying machine according to the present invention.
FIG. 3 is a rear view of the washing and drying machine shown in FIG.
FIG. 4 is a bottom view showing a part of the washing and drying machine shown in FIG. 2 in a cutaway manner.
FIG. 5 is a perspective view of an integrally formed outer tub and each duct of the washing and drying machine shown in FIG. 2;
FIG. 6 is a vertical sectional side view of a circulation fan showing a part of the parts in an exploded state.
FIG. 7 is a vertical sectional side view showing a disassembled circulation fan.
FIG. 8 is an inner view of the outlet side casing, the partition plate, and the suction side casing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Outer frame, 2 ... Washing and dewatering tank, 4 ... Stirring blade, 5 ... Outer tank, 5a ... Suction port, 6 ... Drive device, 23 ... Water-cooled dehumidification duct, 25 ... Downdraft duct, 26 ... Circulation fan, 27: Upward air duct, 51: Outlet casing, 51a: Suction port, 51b: Outlet port, 51c: Impeller chamber section, 51d: Blow air path section, 51e: Motor mounting section, 51f: Mounting leg section 51g: screw connection portion, 51h: peripheral fitting groove, 52: suction side casing, 52a: suction air passage portion, 52b: drain outlet, 52c: blow air passage cover portion, 52d: screw connection portion, 52e: peripheral edge Fitting ridge, 53: partition plate, 54: centrifugal impeller, 55: electric motor.

Claims (6)

An outer tub provided with a washing and dewatering tub inside, and air in the outer tub is sucked out from a suction port provided at a lower portion of the outer tub, and the sucked air is provided facing an upper opening of the washing and dewatering tub. A circulating air passage that blows into the washing and dewatering tub from the blowing port, a water-cooling dehumidifying device that water-cools and dehumidifies the circulating air sucked from the outer tub into the circulating air passage, and a heating device that heats the circulating air that has been water-cooled and dehumidified. Washer-dryer
The circulation air passage includes an air passage duct formed integrally with the outer tub on an outer peripheral side of the outer tub,
A circulating fan installed in the circulating air path to generate circulating air has a suction port and a blow-out port, and is formed so as to surround the suction side of the impeller with an opening, and is formed under the outer tank. And a suction-side casing attached to the outer tub so as to be positioned on the side, and a suction-side casing that covers an opening of the blow-side casing and forms an air passage from the suction port to the suction side of the impeller. A washing / drying machine characterized by that: In claim 1, the blow-off side casing is formed such that the suction port and the blow-out port are fitted to a lower end of the air duct when the blow-side casing is attached to a lower side of an outer tank. A washing / drying machine characterized by that: The washing / drying machine according to claim 1 or 2, wherein the outlet side casing and the suction side casing are provided with a fitting groove and a ridge on peripheral edges thereof. The washing / drying machine according to any one of claims 1 to 3, wherein the motor for driving the impeller is attached to a blow-off side casing. The washing / drying machine according to any one of claims 1 to 3, wherein a partition plate for partitioning between the suction side and the blowing side of the impeller is sandwiched between the blowing side casing and the suction side casing. The washing and drying machine according to any one of claims 1 to 3, wherein the suction side casing has a drain outlet.

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