WO2023002700A1 - Machine à laver - Google Patents

Machine à laver Download PDF

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Publication number
WO2023002700A1
WO2023002700A1 PCT/JP2022/012959 JP2022012959W WO2023002700A1 WO 2023002700 A1 WO2023002700 A1 WO 2023002700A1 JP 2022012959 W JP2022012959 W JP 2022012959W WO 2023002700 A1 WO2023002700 A1 WO 2023002700A1
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WO
WIPO (PCT)
Prior art keywords
fan
heater
section
washing machine
housing
Prior art date
Application number
PCT/JP2022/012959
Other languages
English (en)
Japanese (ja)
Inventor
隆 黒田
丈 曽我
宏介 住吉
謙進 浅野
和寛 塚本
聡凜 佐々木
重幸 佐々木
哲也 山本
Original Assignee
日立グローバルライフソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2021118664A external-priority patent/JP2023014615A/ja
Priority claimed from JP2021122244A external-priority patent/JP2023018259A/ja
Priority claimed from JP2021133855A external-priority patent/JP2023028263A/ja
Application filed by 日立グローバルライフソリューションズ株式会社 filed Critical 日立グローバルライフソリューションズ株式会社
Priority to CN202280026707.2A priority Critical patent/CN117157441A/zh
Publication of WO2023002700A1 publication Critical patent/WO2023002700A1/fr

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis

Definitions

  • the present invention relates to a washing machine, and more particularly to a washing machine with a drying unit.
  • a drying unit provided in the washing machine has a heater section and a fan section, and blows warm air obtained by heating the air blown from the fan section with the heater section into the drum.
  • this drying unit was made of aluminum die-cast (a cast product made of aluminum), which has excellent heat resistance.
  • aluminum die-casting is expensive to manufacture and is heavy, there is a problem that the weight of the washing machine increases, making transportation difficult.
  • aluminum die-casting is thick, there were also problems such as an increase in the volume of the washing machine and a narrow space inside the drying unit.
  • Patent Literature 1 discloses a drying duct assembly 20 in which a lower duct 21 and an upper duct 22 constituting a housing for housing a heater 25 and a fan assembly 24 are made of heat-resistant resin (syndiotactic polystyrene). . According to Patent Document 1, the weight of the drying duct is greatly reduced, the weight of the laundry itself is reduced, and there are effects such as facilitating the transportation work.
  • the heat source of the drying unit is a PTC (Positive Temperature Coefficient) heater, so the heater part is covered with flame-retardant ABS (V0) resin, but in overseas models, maintenance of the drying unit is required.
  • PTC Physical Temperature Coefficient
  • V0 flame-retardant ABS
  • sheathed heaters tend to reach a higher temperature than PTC heaters when heated, there is a possibility that a housing made only of a resin material, such as that disclosed in Patent Document 1, may not have sufficient heat resistance.
  • One aspect of the present invention for solving the above problems is a housing, an outer tub provided in the housing, a drum provided with an inlet inserted into the outer tub and into which the laundry is thrown, and the outer tub.
  • a water supply unit that supplies detergent and water, a drying unit that blows air into the drum, and a control unit that controls the operation of the washing machine, the drying unit having a heater section and a fan section,
  • the washing machine is characterized in that the heater section and the fan section are independent components and are detachably connected.
  • FIG. 1 is a longitudinal sectional view showing an internal structure of a washing/drying machine according to an embodiment of the present invention
  • FIG. 1 is a perspective view showing an internal structure of a washing/drying machine according to an embodiment of the present invention
  • FIG. 1 is a perspective view showing the appearance of a drying unit according to an embodiment of the present invention
  • FIG. 4 is a perspective view showing the internal structure of the drying unit according to the embodiment of the present invention
  • 1 is a perspective view showing an internal structure of an air blower according to an embodiment of the present invention
  • Appearance perspective view showing an example of the drum-type washing machine of the present invention The top view which shows an example of this invention drum-type washing machine.
  • Appearance perspective view of the drying unit mounted in FIG. AA line sectional view of FIG. Enlarged view of part A in FIG. 10A
  • Enlarged view of B part of FIG. 11A A diagram showing an example of the connection method of the heater section and the fan section
  • FIG. 14 is an enlarged view of the fan portion of the drying unit of FIG.
  • FIG. 17A is an enlarged view of the connecting portion with the outer tank of FIG. 17A
  • Top view of outer tank side fixing member Enlarged view of the joint between the outer tank side fixing member and the fan duct cover seen from below (before fixing)
  • the various constituent elements of the present invention do not necessarily have to be independent entities, and one constituent element may consist of a plurality of members, a plurality of constituent elements may consist of one member, a certain constituent element may , overlap of one component with another component, and so on.
  • FIG. 7 is an external perspective view showing an example of the drum-type washing machine of the present invention
  • FIG. 8 is a top view showing an example of the drum-type washing machine of the present invention. The outline of the configuration and operation of washing machine 1100 will be described with reference to FIGS. 7 and 8.
  • FIG. 7 is an external perspective view showing an example of the drum-type washing machine of the present invention
  • FIG. 8 is a top view showing an example of the drum-type washing machine of the present invention.
  • the outline of the configuration and operation of washing machine 1100 will be described with reference to FIGS. 7 and 8.
  • each direction for explanation.
  • the horizontal direction is the left-right direction
  • the height direction is the up-down direction
  • the depth direction is the front-back direction.
  • the housing 11 constituting the outside of the washing machine 1100 includes a housing body 11b whose both side surfaces and the back surface are integrally formed of a steel plate and has a U-shaped shape when viewed from above, and a housing body 11b. It is composed of an underplate (not shown) arranged below, a front cover (not shown) covering the front surface of the housing body 11b, and a top cover 11c arranged above. A door 12 that can be opened and closed is arranged on the front surface of the housing 11 .
  • a water supply hose connection port 17 (FIG. 8) for supplying water from a tap to the washing machine 1100 is provided on the upper back of the housing 11 .
  • the door 12 is supported by a hinge provided on a front cover (not shown) so that it can be opened and closed. By pulling the door opening handle 12a, the door 12 is unlocked and opened forward, and is locked and closed by pressing the door 12 against the front cover.
  • the door 12 is provided with an operation section (not shown) in which operation switches and the like are arranged.
  • the operation unit is of a glass touch panel type and is electrically connected to a control unit 120 ( FIG. 8 ) provided inside the housing 11 .
  • the control unit 120 includes a support base 121 extending in the front-rear direction of the housing 11, a control board (not shown) mounted on the support base 121, and a control board (not shown) mounted with control components, and a control board mounted on the support base 121.
  • a covering case body (not shown) is provided.
  • the door 12 has a window 13 concentrically with the opening of the outer tub (not shown) through which the inside of the circular opening for loading and unloading clothes can be seen.
  • a drain hose 18 (Fig. 8) for draining water is attached to the back of the housing 11.
  • a water supply unit 130 (FIG. 8) having a water supply valve 131 is provided in the upper part of the housing 11 and in front of the water supply hose connection port 17 .
  • the water supply unit 130 includes a detergent containing portion 132a for containing detergent and a finishing agent containing portion 132b for containing finishing agent.
  • the detergent storage portion 132a and the finishing agent storage portion 132b are connected to the water supply valve 131 via hoses.
  • the water supply unit 130 can be pulled out to the front side, and the user puts the detergent and the finishing agent into the detergent storage portion 132a and the finishing agent storage portion 132b while the water supply unit 130 is pulled out.
  • a drainage pump (not shown) is provided in the drainage path of the drainage hose 18 provided at the bottom of the outer tub 110 .
  • the drainage pump When the drainage pump is not operated, the water supplied to the outer tub is accumulated in the outer tub, and when the drainage pump is operated, the washing water in the outer tub is drained out of the washing machine 1100 through the drainage hose 18. .
  • a drying unit 140 for drying clothes is provided on the top of the housing 11 (outer tub).
  • the drying unit 140 includes a heater section 141 in which a heater for heating air is arranged, and a fan section 142 for blowing air to the heater section 141 .
  • the control unit 120, the water supply unit 130, and the drying unit 140 of this embodiment extend in the front-rear direction of the housing 11, and the control unit 120, the water supply unit 130, and the drying unit 140 are arranged side by side in the left-right direction.
  • the water supply unit 130 is arranged between the control unit 120 and the drying unit 140 in the horizontal direction.
  • FIG. 9 is an external perspective view of the drying unit mounted in FIG.
  • the heater section 141 constituting the drying unit 140 has a heater 145 serving as a heat source, and a heater base 143 and a heater cover 144 serving as a housing for housing the heater 145 .
  • the fan section 142 includes a fan (not shown), a fan cover 146 and a fan casing 147 serving as a housing for accommodating the fan.
  • the drying unit 140 of the present embodiment has a configuration in which a heater section 141 and a fan section 142 are independent parts and are detachably connected.
  • the housing that houses the heater 45 and the housing (fan cover 146 and fan casing 147) that houses the fan are configured as separate parts, and the fan and heater are the same.
  • the configuration is significantly different from that of the patent document (Japanese Patent Application Laid-Open No. 2009-504307), which is housed in a resin-made housing (lower duct 121 and upper duct 122).
  • the heater portion 141 that requires heat resistance is made of metal, and the fan portion 142 that does not require heat resistance is made of resin, thereby achieving both heat resistance and weight reduction of the drying unit 140. can do.
  • the material constituting the heater portion 141 is not particularly limited as long as it can withstand the heater 145.
  • the heater base 143 is made of die-cast aluminum, and the heater cover is made of SUS1430. Can be configured.
  • the fan cover 146 and the fan casing 147 that constitute the fan part 142 can be made of a pressed resin material such as PBT GF30, which is polybutylene terephthalate (PBT) to which 130% by weight of glass fiber is added.
  • FIG. 10A is a cross-sectional view taken along line AA of FIG. 9, and FIG. 10B is an enlarged view of portion A of FIG. 10A.
  • the fan section 142 is connected to the outer tub of the washing machine via a bellows hose 150 and fixing members 151 and 152 .
  • the connecting portion of heater cover 144 with heater base 143 has a bead, and first packing 148 is arranged on the bead. Heater cover 144 and heater base 143 are tightly fixed by the bead of heater cover 144 and first packing 148 .
  • FIG. 11A is a perspective view of the fan section taken out in FIG. 9, and FIG. 11B is an enlarged view of the portion B in FIG. 11A.
  • the connecting portion of the fan portion 142 to the heater portion 141 (the end portion of the fan portion 142 on the heater portion 141 side) is elevated and lowered from the fan portion 142 side to the heater portion 141 side. It has a shape that slopes with a difference.
  • the end portion of the fan portion 142 is lowered from the fan portion 142 to the heater portion 141 .
  • a second packing 149 is provided at the connecting portion of the fan portion 142 and the heater portion 141 .
  • FIG. 12 is a diagram showing an example of a method of connecting the heater section and the fan section
  • FIG. 13 is a diagram showing an example of a fixing section for the heater section and the fan section.
  • the heater section 141 and the fan section 142 can be moved vertically and connected.
  • a screw 153 is inserted from the upper portion of the heater section 141 into a screw hole provided in the heater base 143 of the heater section 141 and a screw hole provided in the fan cover 146 of the fan section 142, thereby heating the heater.
  • the portion 141 and the fan portion 142 can be integrally fixed.
  • the drying unit 140 can be screwed from the upper surface of the product when fixing it to the housing 11 of the washing machine or when rearranging for service. can improve sexuality.
  • the configuration of this embodiment is particularly advantageous when the washing machine is installed at a place where there is not enough space on the left and right sides.
  • the drying unit 140 of the present invention minimizes the use of die-cast parts, which are relatively expensive to manufacture, to reduce cost and weight. Since the drying unit 140 is configured separately into the heater section 141 and the fan section 142, when the heater section 141 and the fan section 142 fail, they can be replaced separately, and it is not necessary to replace the entire drying unit 140. Therefore, it is possible to improve workability at the time of repair and reduce repair costs.
  • An object of the present invention is to provide a washing machine having a drying unit that can be installed in a narrow space.
  • FIG. 14 is an external perspective view of the drying unit mounted in FIG.
  • the heater section 141 constituting the drying unit 140 has a heater 243 serving as a heat source, and a heater base 244 and a heater cover 245 serving as a housing for housing the heater 243 .
  • the fan unit 142 also includes a fan (not shown) and a fan cover 246 serving as a housing for housing the fan.
  • FIG. 15A is an enlarged view of the fan portion of the drying unit of FIG. 14, and FIG. 15B is an enlarged view of a member forming a connecting portion between the fan portion and the outer tank.
  • the heater section joint 249 of the fan cover 246 has a shape inclined toward the heater section 141, and the heater base 244 is connected from the upper portion of the heater section joint 249. can do.
  • the fan portion 142 and the outer tub 210 are connected via a hose (bellows hose) 250 .
  • the upper portion of hose 250 (fan cover 246 side) is fixed by bell mouth seal 251 and sealer 252 .
  • the lower portion of hose 250 (on the side of outer tub 210 ) is fixed by outer tub-side fixing member 247 and fan duct cover 211 .
  • the washing machine of the present invention connects the drying unit 140 and the outer tub 210 in the vertical direction (height direction). As a result, it is not necessary to secure a space in the horizontal direction (width direction) of the washing machine for connecting the drying unit 140 and the outer tub 210, and when the installation place of the washing machine has no space in the vertical direction and the horizontal direction.
  • the drying unit 140 can be attached and detached even at
  • FIG. 16 is a cross-sectional view enlarging the connecting portion between the fan portion and the outer tank and a top view enlarging the bell mouth seal.
  • the upper portion of the hose 250 (on the side of the fan cover 246) is secured by a bell mouth seal 251, a sealer 252 arranged outside the bell mouth seal 251, and a screw 254 passing through the bell mouth seal 251. It is fixed to the fan cover 246 .
  • the screw 254, the fan cover 246, and the sealer 252 are fixed at a portion A in FIG. 16, and the bell mouth seal 251 and the sealer 252 are fixed at a portion B in FIG.
  • the bell mouth seal 251 is provided with ribs 253 for enhancing strength.
  • FIG. 17A is a diagram showing a state in which the fan section of the drying unit is attached to the housing of the washing machine
  • FIG. 17B is an enlarged diagram of the connecting section with the outer tub in FIG. 17A.
  • the fan section 142 of the drying unit 140 is arranged at the upper corner of the housing main body 211b of the washing machine 1100.
  • the lower portion of hose 250 is connected to outer tub 210 via fan duct cover 211 that sends air from outer tub fixing member 247 and fan portion 142 to outer tub 210 .
  • the outer tub-side fixing member 247 is fixed to the fan duct cover 211 by turning the projection 248 in the direction of the arrow in FIG. 17B.
  • FIG. 18A is an enlarged view of the outer tank side fixing member (before fixing)
  • FIG. 18B is an enlarged view of the outer tank side fixing member (after fixing)
  • FIG. 19 is a top view of the outer tank side fixing member. be.
  • the outer-tub-side fixing member 247 has an annular shape with projections 248 .
  • FIGS. 18A and 18B when the outer tub side fixing member 247 is rotated in the direction of the arrow in FIG.
  • FIG. 20A is an enlarged view (before fixing) of the connecting portion between the outer tank side fixing member and the fan duct cover as seen from below
  • FIG. 20B is an enlarged view of the connecting portion between the outer tank side fixing member and the fan duct cover as seen from below
  • Fig. 3 is an enlarged view (after fixation);
  • the connection between the drying unit 140 and the outer tub 210 can be performed in the vertical direction (height direction). It does not require a hose, a fixing band, etc., protruding outside the Products for overseas use a housing panel with a U-shaped cross section in which the sides and back of the housing are integrated.
  • the drying unit can only be installed and removed from the front side of the washing machine. The drying unit can be installed and removed even if there is.
  • An object of the present invention is to provide a washing/drying machine that solves the above-mentioned problems, suppresses the flow of dehumidified cooling water and condensed water flowing into the drying air passage into electric parts such as a blower, and improves the reliability of the product. to provide.
  • the present invention comprises an outer tub, a washing/drying tub arranged in the outer tub to accommodate laundry, driving means for driving the washing/drying tub, and the outer tub.
  • a supporting housing an air passage through which air for drying circulates in the washing and dewatering tub, an air heating means provided in the middle of the air passage for heating the air, and an air heating means provided in the middle of the air passage.
  • air blowing means for blowing air wherein the air blowing passage located downstream of the air blowing means has a first inclined portion inclined downward from the air blowing means toward the downstream side. , wherein the first inclined portion is positioned below the suction portion of the air blowing means.
  • the present invention it is possible to provide a washing and drying machine with improved product reliability by suppressing the dehumidifying cooling water and condensed water flowing into the drying air passage from flowing into the electric parts such as the blower.
  • FIG. 1 is a vertical cross-sectional view showing the internal structure of a washing/drying machine according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing the internal structure of the washing/drying machine according to the embodiment of the present invention.
  • a drum-type washer/dryer in which a laundry loading/unloading opening is formed on the front side and a rotating shaft of the washing tub is provided horizontally will be described as an example.
  • the drum-type washer/dryer S includes an outer frame 1 as a housing, an outer tub 2 for storing washing water, a rotating tub 3 for loading clothes, and rotating the rotating tub 3.
  • a driving motor 10 driving means
  • an air blower 22 and the like are provided.
  • the outer tub 2 is built in the outer frame 1 and is supported by the outer frame 1 in a vibration-proof manner.
  • the rotating tub 3 is a washing and dehydrating tub that accommodates laundry such as clothes to be washed and dried, and is provided inside the outer tub 2 . Further, the rotating tub 3 is rotatably supported within the outer tub 2 .
  • a metal flange 4 is provided on the right side of the rotating tub 3 in the drawing.
  • a rotating shaft with a pulley is attached to the metal flange 4 .
  • the driving force of the driving motor 10 is transmitted to the pulleys via the belt, and the driving force of the driving motor 10 rotates the rotary tub 3 .
  • a water supply unit 7 is provided at the top inside the outer frame 1 .
  • the water supply unit 7 has a plurality of water channels inside and supplies tap water or bath water sucked from a bathtub to the outer tub 2 .
  • a detergent and finishing agent charging device (not shown) is provided in the water supply unit 7. Detergents and finishing agents are poured between the outer tub 2 and the rotating tub 3.
  • the drum-type washer/dryer S has a drying mechanism.
  • This drying mechanism circulates and dehumidifies the drying air for drying the laundry in the rotary tub 3 .
  • the drying mechanism includes a drying unit 9 arranged in the upper part of the outer frame 1 and a dehumidification vertical passage 21 connected to the drying unit 9 at one end.
  • the dehumidifying vertical passage 21 is arranged to extend vertically in the outer frame 1 , and the other end thereof is connected to the bottom of the outer tub 2 to communicate with the outer tub 2 .
  • cooling water flows downward from above. Air containing moisture discharged from the outer tub 2 is cooled and dehumidified by cooling water when passing through the dehumidifying vertical passage 21 .
  • the drying unit 9 includes an air blower 22 (blowing means), an electric heater 24 (air heating means), and a heater casing 400 .
  • the suction side of the blower 22 is connected to the upper side of the dehumidifying vertical passage 21 .
  • the exhaust side of the blower 22 is connected to the heater casing 400 and then to the return connection circuit 25 so as to communicate therewith.
  • the return connection circulation path 25 is connected so as to communicate with the upper portion of the outer tub 2 .
  • the dehumidification vertical passage 21, the drying unit 9, and the return connection circulation passage 25 form a drying air circulation passage (blowing passage) through which drying air flows.
  • the blower 22 and the electric heater 24 are arranged in the middle of the drying air circulation path (blowing passage). Details of the heater casing 400 that houses the blower 22 and the electric heater 24 will be described later.
  • the lower bellows hose 26 is connected to the bottom depression 31 of the outer tub 2 .
  • the bottom recessed portion 31 communicates with a washing water drainage channel (not shown).
  • a washing water drainage channel not shown.
  • the centrifugal fan 300 (see FIG. 4) provided in the air blower 22 rotates so that the drying air circulates in the rotating tub 3 to dry the laundry in the rotating tub 3. Also, the drying air in which the moisture is condensed in the dehumidification area is reheated by the electric heater 24 (see FIG. 4) and flows through the rotary tub 3, so that the moisture of the laundry is further evaporated. The laundry is dried by repeating this moisture removal by circulation of the drying air.
  • FIG. 3 is a perspective view showing the appearance of the drying unit according to the embodiment of the present invention.
  • FIG. 4 is a perspective view showing the internal structure of the drying unit according to the embodiment of the invention.
  • the blower 22 includes a centrifugal fan 300, a fan motor 100 that rotationally drives the centrifugal fan 300, and a fan casing that surrounds the centrifugal fan 300. 52 and a fan cover 51 that covers the opening of the fan casing 52 .
  • the fan casing 52 and the fan cover 51 constitute a fan housing that accommodates the centrifugal fan 300 .
  • a heater casing 400 is connected to the blower 22 , and an electric heater 24 is arranged inside the heater casing 400 .
  • the drying unit 9 When the drying unit 9 is mounted on the drum-type washing and drying machine S (see FIG. 1), for example, it is installed in the outer frame 1 (see FIG. 1) so that the fan cover 51 of the blower 22 faces substantially downward. .
  • a suction portion 57 and a discharge portion 58 are formed in the fan cover 51 .
  • the suction portion 57 is connected to the dehumidification vertical passage 21 (see FIG. 1).
  • the outlet 58 is connected to the return connection circuit 25 (see FIG. 1) of the drying air circuit.
  • the blower 22 of this embodiment is installed substantially horizontally above the drum-type washer/dryer S. This is because the volume of the installation area within the outer frame 1 of the blower 22 is minimized by installing it horizontally, so the outer frame 1 of the drum-type washer/dryer S can be made smaller. Also, the air blower 22 is connected to the dehumidification vertical passage 21 with the suction portion 57 directed downward. That is, the blower 22 is installed so that the fan cover 51 side faces downward.
  • a scroll flow passage 53 of the blower formed by the fan cover 51 and the fan casing 52 forms part of the air passage, and the flow passage cross-sectional area changes in the rotation direction of the centrifugal fan 300 .
  • the scroll flow path 53 has the narrowest flow path cross-sectional area at the flow path winding start portion 500 , and the flow path cross-sectional area increases toward the rotation direction of the centrifugal fan 300 .
  • the flow passage cross-sectional area of the fan housing increases toward the downstream side.
  • the windward side of the wind flowing through the blowing passage is defined as upstream, and the leeward side is defined as downstream.
  • FIG. 5 is a schematic diagram showing the internal structure of the blower according to the embodiment of the present invention.
  • FIG. 6 is a perspective view showing the internal structure of the blower according to the embodiment of the invention.
  • the blower 22 of this embodiment has a scroll flow path 53 formed by a fan cover 51 and a fan casing 52 , and this scroll flow path 53 is connected to a heater casing 400 .
  • the scroll flow path 53 located downstream of the centrifugal fan 300 is provided with a first inclined portion 61a inclined downward from the centrifugal fan 300 toward the downstream side.
  • the first inclined portion 61 a is positioned below the suction portion 57 of the centrifugal fan 300 .
  • the electric heater 24 is positioned downstream of the blower 22 .
  • the scroll flow path 53 located upstream of the electric heater 24 is provided with a second inclined portion 61b that is inclined downward from the electric heater 24 side toward the upstream side and connected to the first inclined portion 61a.
  • a recessed portion 60 is provided at the connecting portion between the first inclined portion 61a and the second inclined portion 61b.
  • a drain channel 62 is provided at a position lower than the position of the second inclined portion 61b.
  • the drain channel 62 is provided so as to extend from the heater casing 400 toward the recessed portion 60 and is positioned at approximately the same height as the position directly below the blower 22 .
  • the blower 22 drives the drying air used for drying during the drying operation of the drum-type washer/dryer S mainly operated by the blower 22 .
  • the drying air basically internally circulates inside the drum-type washing/drying machine S.
  • the dry air circulating inside the drum-type washing/drying machine S stirs up the cooling water used for dehumidification when passing through the dehumidifying vertical passage 21 .
  • This cooling water hoisting tends to occur mainly when the velocity of the dry air passing through the dehumidifying vertical passage 21 is high.
  • the cooling water that has been lifted up flows into the blower 22, but the cooling water that has flowed in basically stays at the bottom of the blower due to gravity.
  • a first inclined portion 61a inclined downward from the centrifugal fan 300 toward the downstream side is provided.
  • a second inclined portion 61b is provided which is inclined downward from the electric heater 24 side toward the upstream side and connected to the first inclined portion 61a.
  • a connection portion between the first inclined portion 61a and the second inclined portion 61b is provided with a recessed portion 60 as the lowest portion.
  • the structure of this embodiment is particularly effective in the case of washing and drying machines in which the blower is installed horizontally.
  • the water accumulated in the recessed portion 60 is dried by being exposed to high-temperature dry air during the drying operation. Alternatively, the water accumulated in the depression 60 naturally evaporates and dries after the washing/drying machine is stopped. Since the dry air reliably flows through the recessed portion 60, it does not continue to accumulate in the product.
  • a recessed portion 60 is provided at the connecting portion between the first inclined portion 61a and the second inclined portion 61b.
  • the scroll flow path 53 positioned below the centrifugal fan 300 has a dogleg shape until it is connected to the heater casing 400 .
  • the length of the scroll passage 53 until it is connected to the heater casing 400 is longer than in the case of linear connection.
  • the cross-sectional area of the scroll channel 53 positioned below the centrifugal fan 300 changes until it is connected to the heater casing 400 . That is, the flow passage cross-sectional area of the fan housing (fan casing 52 and fan cover 51) increases toward the downstream side.
  • the scroll flow path 53 positioned below the centrifugal fan 300 is formed in a dogleg shape and the flow path length of the scroll flow path 53 is increased. efficiency can be improved. Further, since the flow velocity distribution of the dry air flowing into the heater casing 400 becomes uniform, the temperature rise efficiency of the electric heater 24 is improved, and higher temperature dry air can be obtained at the outlet of the heater casing 400 .
  • the water that has flowed into the blower 22 accumulates in the recess 60, which is the lowest position. It is assumed that the cooling water for the dehumidification mechanism mainly accumulates in the blower 22, but condensation occurs not only inside the blower 22 but also inside the heater casing 400 during the drying operation. It can also accumulate inside.
  • a step may be formed at the connection portion between the scroll flow path 53 and the heater casing 400, and water may accumulate at the stepped portion. There is If water accumulates in the heater casing 400, a short circuit or the like may occur on the surface of the electric heater 24, for example, leading to failure of the washer/dryer.
  • a drain channel 62 connecting the heater casing 400 to the recessed portion 60 is provided. Through this drain channel 62, water accumulated in the heater casing 400 is also discharged to the recess 60 provided at the bottom. As a result, the water inside the heater casing 400 can be removed, and various failure factors caused by the accumulation of water can be eliminated, thereby improving product reliability.
  • the method of providing the drain passage 62 on the outer peripheral side of the scroll passage 53 is the method that does not impair the efficiency of the blower 22 the least, and the temperature of the dry air discharged through the heater casing 400 is the highest. It was found that the value can be maintained.
  • the flow mainly flows along the wall surface on the outer peripheral side due to the effect of centrifugal force. Since the wall surface on the outer peripheral side is less likely to separate the flow due to the effect of the centrifugal force, it is considered that the flow does not separate even if the drain channel 62 is provided.
  • the dehumidified cooling water and condensed water flowing into the drying air passage are suppressed from flowing into the electric parts such as the blower, and the reliability of the product is improved. can be provided.
  • the present invention is not limited to the above-described embodiments, and includes various modifications.
  • the above embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the described configurations.
  • it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

L'invention concerne une machine à laver, qui est peu coûteuse, qui a une résistance à la chaleur qui peut même supporter des éléments de chauffe et qui a un poids d'unité de séchage réduit.　Une unité de séchage (140) de cette machine à laver comprend un appareil de chauffage (141) et un ventilateur (142) et est caractérisée en ce que chaque élément parmi l'appareil de chauffage (141) et le ventilateur (142) est un élément indépendant et l'appareil de chauffage (141) et le ventilateur (142) sont reliés de manière amovible.
PCT/JP2022/012959 2021-07-19 2022-03-22 Machine à laver WO2023002700A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280026707.2A CN117157441A (zh) 2021-07-19 2022-03-22 洗衣机

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2021-118664 2021-07-19
JP2021118664A JP2023014615A (ja) 2021-07-19 2021-07-19 洗濯機
JP2021-122244 2021-07-27
JP2021122244A JP2023018259A (ja) 2021-07-27 2021-07-27 洗濯機
JP2021-133855 2021-08-19
JP2021133855A JP2023028263A (ja) 2021-08-19 2021-08-19 洗濯乾燥機

Publications (1)

Publication Number Publication Date
WO2023002700A1 true WO2023002700A1 (fr) 2023-01-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/012959 WO2023002700A1 (fr) 2021-07-19 2022-03-22 Machine à laver

Country Status (1)

Country Link
WO (1) WO2023002700A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6346098U (fr) * 1986-09-11 1988-03-28
JPH05328668A (ja) * 1992-05-18 1993-12-10 Mitsubishi Electric Corp 回転機
JP2003144790A (ja) * 2001-11-16 2003-05-20 Sharp Corp 乾燥洗濯機
CN1754046A (zh) * 2004-03-09 2006-03-29 美国标准国际公司 复合空气调节风机外壳及其组装方法
JP2007151670A (ja) * 2005-12-01 2007-06-21 Toshiba Corp 洗濯乾燥機
JP2014068655A (ja) * 2012-09-27 2014-04-21 Toshiba Corp 衣類乾燥機
JP2020014779A (ja) * 2018-07-27 2020-01-30 東芝ホームテクノ株式会社 スチーマー
CN111424392A (zh) * 2019-01-10 2020-07-17 青岛海尔洗衣机有限公司 一种壁挂式洗衣机
JP2020172866A (ja) * 2019-04-09 2020-10-22 日立グローバルライフソリューションズ株式会社 送風機および洗濯機

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6346098U (fr) * 1986-09-11 1988-03-28
JPH05328668A (ja) * 1992-05-18 1993-12-10 Mitsubishi Electric Corp 回転機
JP2003144790A (ja) * 2001-11-16 2003-05-20 Sharp Corp 乾燥洗濯機
CN1754046A (zh) * 2004-03-09 2006-03-29 美国标准国际公司 复合空气调节风机外壳及其组装方法
JP2007151670A (ja) * 2005-12-01 2007-06-21 Toshiba Corp 洗濯乾燥機
JP2014068655A (ja) * 2012-09-27 2014-04-21 Toshiba Corp 衣類乾燥機
JP2020014779A (ja) * 2018-07-27 2020-01-30 東芝ホームテクノ株式会社 スチーマー
CN111424392A (zh) * 2019-01-10 2020-07-17 青岛海尔洗衣机有限公司 一种壁挂式洗衣机
JP2020172866A (ja) * 2019-04-09 2020-10-22 日立グローバルライフソリューションズ株式会社 送風機および洗濯機

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