CN1308525C - Washing machine with clothes-drying function - Google Patents

Abstract

A washing machine with a function of drying clothes, in which hot air sent from a drying device (3) is supplied into the drum (10) through the air hole (821) through the central part of the right end wall (10R) side of the drum. A plurality of water holes (10D) are provided on the peripheral wall (10C) of the drum (10). A plurality of ventilation holes (101) are provided on the central part of the left end wall (10L) of the drum (10). The air in the outer tank (7) is introduced into the drying device (3) through the exhaust port (71) formed at the lower part behind the peripheral wall (7C) of the outer tank (7). When the amount of clothes is small, the hot air flowing from the drum (10) through the water hole (10D) to the exhaust port (71) can dry the clothes near the inner peripheral surface of the drum (10) well; The clothes in the central part of the drum (10) can be dried well by the hot air flowing from the drum (10) through the air hole (101) to the exhaust port (71).

Description

Washing machine with clothes drying function

technical field

The invention relates to a washing machine with a clothes drying function.

Background technique

A drum-type washing and drying machine (washing and drying machine) is known in which laundry is accommodated in a substantially cylindrical drum rotatable about an axis extending substantially in a horizontal direction (for example, refer to Patent Documents 1 to 3). ). In the drum type washing and drying machine, for example, there is an outer tank installed around the outside of the drum, and the laundry in the drum is protruded from the inner surface of the drum by rotating the drum while a predetermined amount of water is stored in the outer tank. The baffle is lifted and falls freely to the water surface at a certain height (beating and washing), and this action can be repeated for washing. At the end of washing, the drum rotates at a high speed, and the water soaked in the laundry is thrown out by centrifugal force, thereby realizing the dehydration of the laundry.

In the drum-type washing and drying machine, for example, there is a drying device that supplies hot air into the drum. The drying device supplies hot air into the drum and rotates the drum. By letting the laundry in the drum fall freely from a certain height, Laundry can be dried.

In the structure disclosed in Patent Document 1, in order to improve the drying efficiency, the drying device supplies hot air into the drum during the dehydration process, and the temperature inside the drum (in the outer tank) has been raised in advance at the beginning of the drying process. This can further improve the drying efficiency.

In addition, Patent Document 1 discloses a configuration in which hot air is supplied from one end face side of the drum. However, the hot air supplied into the drum flows into the drum from the water hole (dehydration hole) formed on the peripheral surface of the drum, the opening formed on the other end face of the drum, and the gap between the opening and closing doors (drying air output port), etc. In addition, therefore, especially when the amount of laundry is large, the laundry located in the center of the drum cannot be dried well. In addition, the air outlet (drying air output port) for introducing the air in the outer tank into the drying device is arranged opposite to the other end surface of the drum, so the hot air flowing from the water hole to the outside of the drum cannot be well. Therefore, it is sometimes impossible to generally (spread over all parts) dry the laundry.

In addition, in the structure disclosed in Patent Document 1, since the drying device is driven while the current used for driving the drum is large, the used current may exceed a predetermined value. In this case, the life of each component constituting the drum type washing and drying machine will be shortened.

Patent Documents 2 and 3 disclose structures capable of reducing wrinkles generated on laundry during drying. Patent Document 2 discloses a configuration in which the drum is rotated at high speed (high-speed dehydration rotation) for drying when the amount of laundry is large (load), but this configuration cannot reduce wrinkles well when the amount of laundry is large. In addition, Patent Document 3 discloses a configuration in which the rotation speed of the drum rotating in one direction is slowly decreased during drying, but such a configuration cannot be applied to rotating the drum repeatedly switching in one direction and the other direction (forward rotation). and reverse) to complete the drying process. Therefore, it is desired to obtain a structure capable of reducing wrinkles generated in laundry (clothes) favorably.

Patent Document 1

Patent No. 3346941

Patent Document 2

Patent No. 3311653

Patent Document 3

Patent No. 2880838

Contents of the invention

The present invention is proposed in view of the problems in the background technology. The first purpose of the present invention is to provide a washing machine with a clothes drying function that can dry clothes better.

The second object of the present invention is to provide a washing machine with a clothes drying function which can further improve the drying efficiency.

A third object of the present invention is to provide a washing machine with a clothes drying function which can more generally dry clothes.

A fourth object of the present invention is to provide a washing machine with a clothes drying function which can prolong the life of each component.

A fifth object of the present invention is to provide a washing machine with a clothes drying function capable of reducing wrinkles on clothes well.

The first invention that achieves the above object is a washing machine 1 with a clothes drying function, which has a drum 10 rotatable around rotating shafts 11L, 11R set within a predetermined angle range relative to the horizontal direction, and a drum surrounding the drum. The outer tub 7 is used to dry the clothes by supplying hot air into the drum from one end face side 10R of the drum when the clothes are accommodated in the drum, and is characterized in that it includes: On the surface wall 10C, the water hole 10D that can pass the water thrown out of the clothes when the clothes in the drum are dehydrated by applying centrifugal force by rotating the drum; The ventilation hole 101 for the hot air sent in from one end face side of the drum; the hot air coming out of the drum is discharged to the The exhaust port 71 outside the outer tank also includes: a rotating shaft installed at the central part of the other end face of the drum; a central part arranged at the other end face of the drum for installing the rotating shaft The raised portion for installing the rotating shaft; a plurality of ribs provided on the raised portion for installing the rotating shaft and extending radially around the rotating shaft, and the vent hole is formed on the other side of the drum on the portion of the end surface corresponding to the region formed between the plurality of ribs.

In addition, alphanumeric symbols represent corresponding constituent elements in the embodiments described below. The following items are the same.

According to this structure, the exhaust port is arranged at the position facing the drum peripheral surface, therefore, the hot air supplied into the drum can be well introduced into the exhaust port through the water hole, and at the same time, the air vent hole formed on the other end surface of the drum It can also pass hot air. That is, when the amount of clothes is small, the hot air flowing from the drum through the water hole to the exhaust port can dry the clothes near the inner peripheral surface of the drum well. The hot air flowing through the water hole to the exhaust port can dry the clothes in the center of the drum well. Therefore, it is possible to satisfactorily dry clothes covering various parts.

Alternatively, the rotating shaft 11L may be attached to the central portion of the other end surface 10L of the drum, and the ventilation holes may be formed near the rotating shaft on the other end face of the drum. In this case, since the ventilation hole is provided near the rotation axis of the other end surface of the drum, the hot air supplied into the drum can be introduced from one end surface side to the other end surface side along the axis line of the drum. Therefore, even when there is a large amount of laundry, hot air can be supplied to the laundry located in the center of the drum, so that the laundry can be dried at various locations.

It is also possible to include the rotating shaft installation protrusion 81 arranged in the center of the other end surface 10L of the drum 10 for mounting the rotation shaft 11L, and the rotation shaft installation protrusion 81 provided on the rotation shaft installation. and a plurality of ribs 813 extending radially around the axis of rotation, the above-mentioned holes 101 are formed on the other end surface of the drum corresponding to the formation area between the plurality of ribs (through the plurality of ribs On the part of the circular area of the front end). In this way, by attaching the boss for installing the rotating shaft, a ventilation hole is formed in a region with high strength, so that the reduction in the strength of the drum can be prevented.

The region formed between the plurality of ribs 813 is preferably arranged in a circular region extending from the center of the other end surface 10L of the drum 10 to about half the radius.

The second invention is based on the first invention, and is characterized by further comprising: a rotating shaft attached to the central portion of one end surface of the drum; and a rotating shaft arranged on the one end surface of the drum for attaching the rotating shaft 11R The installation boss 82; the supply port 821 provided on the above-mentioned rotating shaft installation boss and used to supply hot air into the drum; the surface that partitions the supply port and is on the upstream side (right side) of the hot air flow direction On the upper side, the supply port forming member 829 is formed with an inclined surface 829A inclined in a direction perpendicular to the hot air flow direction.

According to this configuration, the hot air supplied into the drum flows along the inclined surface through the supply port, so that the hot air can be supplied into the drum more smoothly. Thereby, the laundry contained in the drum can be dried better.

On the supply port constituting member 829, a protruding portion having an apex on the upstream side in the hot air flow direction and having a substantially triangular cross-section is formed, and the surface of the protruding portion on the upstream side in the flow direction constitutes the slope. Surface 829A.

The third invention is a washing machine 1 with a clothes drying function, which has a drum 10 rotatable around rotating shafts 11L, 11R set within a predetermined angle range relative to the horizontal direction, and clothes are stored in the drum. In the state, the clothes can be dried by supplying hot air into the drum, which is characterized in that it includes: a drying device 3 for supplying hot air into the drum; it can be performed by supplying hot air into the drum from the drying device A drying stroke actuator (40, T19-T26) used for the drying stroke of drying clothes; before the drying stroke starts, the drying device supplies hot air into the drum and rotates the drum to The heating and dehydration stroke actuator (40, T3~T18) of the heating and dehydration stroke that applies centrifugal force to the clothes in the drum for dehydration. ~ T16), switch the driving mode of the drying device, so that the current consumed by the drying device is smaller.

According to this configuration, since the current consumed by the drying device can be suppressed during a period in which the current for driving the drum is large, the amount of current used can be prevented from exceeding a predetermined value. Therefore, the life of each component constituting the washing machine can be extended.

It is also possible to switch the heaters 341 and 342 included in the drying device 3 to a weak state during the period (T8-T10, T13-T16).

The fourth invention is a washing machine 1 with a clothes drying function capable of supplying hot air into an accommodating chamber 10 for accommodating clothes to dry clothes, and is characterized in that it includes a drying machine for supplying hot air into the accommodating chamber. Device 3; the cooling water supply mechanism 14, 311 that can supply cooling water (dehumidification water), and the cooling water is used to cool the hot air supplied to the accommodation chamber by the drying device and remove the moisture contained in the hot air; The drying stroke actuator (40, T19-T26) of the drying stroke for drying the clothes by supplying cooling water from the cooling water supply mechanism and supplying hot air to the storage chamber from the above-mentioned drying device; Before the stroke, the above-mentioned drying device supplies hot air to the storage chamber, and exerts centrifugal force on the clothes in the storage chamber to dehydrate the heating and dehydration stroke actuator (40, T3-T18). The cooling water supply mechanism is at Cooling water supply is stopped during the heating and dehydration process.

During the heating and dehydration process, since the temperature in the storage chamber is relatively low, when the cooling water is supplied by the cooling water supply mechanism, the rise of the temperature in the storage chamber will be hindered. According to the configuration of the present invention, since the cooling water supply is stopped during the heating and dehydration process, the temperature rise in the storage chamber can be improved. Therefore, the temperature in the accommodating chamber can be better raised at the beginning of the subsequent drying process, so that the drying efficiency can be improved and the clothes can be dried better.

The fifth invention is a washing machine 1 with a function of drying clothes, which has a drum 10 rotatable around rotating shafts 11L, 11R set within a predetermined angle range relative to the horizontal direction, and clothes are accommodated in the drum. In the state, the drum is rotated repeatedly in one direction and the other direction (forward rotation and reverse rotation), and at the same time, the drying process of drying the clothes by supplying hot air into the drum can be performed. During a predetermined period (T24-T25) before the end of the stroke, the driving mode of the drum is switched so as to reduce the force acting on the laundry in the drum by switching the rotation direction of the drum.

According to this configuration, the force acting on the clothes in the drum is reduced by switching the rotation direction of the drum for a predetermined period before the drying process ends. Therefore, it is possible to suppress torsional force generated on the clothing, and to favorably reduce wrinkles generated on the clothing.

During the predetermined period ( T24 to T25 ), the rotation speed of the drum 10 toward at least one side can be switched to a lower rotation speed, and the rotation time of at least one side can be switched to a longer time (rotation frequency decreases).

The predetermined period (T24 to T25) can be determined according to the amount of laundry (loaded amount). In this case, the drum driving method may be switched during the predetermined period when the load is greater than a predetermined value, but may not be switched during the predetermined period when the load is less than the predetermined value.

The sixth invention is a washing machine 1 with a clothes drying function, which has a drum 10 rotatable around rotating shafts 11L, 11R set within a predetermined angle range relative to the horizontal direction, and clothes are stored in the drum. state, the clothes can be dried by supplying hot air into the drum, which is characterized in that it includes: a drying device 3 for supplying hot air into the drum; The drying stroke actuator (40, T19-T26) of the drying stroke for drying the clothes; after the drying stroke ends, when the drying device stops supplying hot air, the drum can be directed toward one direction and the other Rotate repeatedly in one direction (forward rotation and reverse rotation) to execute the cooling stroke actuator (40, T26-T28) used to cool the clothing cooling stroke. During the specified period (T27-T28) before the end of the cooling stroke, the drum The rotation time of at least one side is switched to a shorter time.

According to this constitution, it is possible to eliminate the phenomenon that the clothes in the drum get tangled and can spread them out well. Therefore, it is possible to suppress the torsional force generated on the clothing, and to favorably reduce wrinkles generated on the clothing.

The seventh invention is a washing machine 1 with a clothes drying function capable of supplying hot air into a storage room 10 for storing clothes to dry clothes, and is characterized in that it includes a drying machine for supplying hot air into the storage room. Device 3; the cooling water supply mechanism 14, 311 that can supply cooling water (dehumidification water), and the cooling water is used to cool the hot air supplied to the accommodation chamber by the drying device and remove the moisture contained in the hot air; The drying stroke actuator (40, T19-T26) of the drying stroke in which the cooling water is supplied by the cooling water supply mechanism and the hot air is supplied from the drying device to the storage chamber to dry the clothes; the cooling water temperature detection mechanism (S2, 40), the cooling water temperature detecting mechanism detects the cooling water temperature of the cooling water temperature detection mechanism before (T1-T2) or within a predetermined period from the start of supplying hot air (T19) to the storage chamber 10 by the drying device 3. The temperature of the cooling water supplied by the cooling water supply mechanism 14, 311 mentioned above is detected, and the drying stroke actuator performs timing according to the temperature of the cooling water detected by the cooling water temperature detection mechanism to end the drying stroke.

According to this structure, the temperature of the cooling water is detected within a predetermined period before the drying device starts supplying hot air into the storage room, or when the supply of hot air starts, so that the hot air sent by the drying device heats up the temperature of the cooling water. The temperature of the cooling water can be detected before. Therefore, the timing time for ending the drying process can be more properly determined, and the clothes can be dried better.

It includes a heating and dehydration course actuator (40, T3-T18) that performs heating and dehydration by causing the drying device to supply hot air into the storage chamber and apply centrifugal force to the clothes in the storage chamber before the drying course. The water temperature detection mechanism (S2, 40) can detect the temperature of the cooling water before the heating and dehydration process starts (T1-T2).

In addition, when the operation starts from the drying process, the cooling water temperature detection mechanism (S2, 40) can also detect the temperature of the cooling water within a predetermined time from the drying process (T19).

Description of drawings

Fig. 1 is a longitudinal sectional view of a drum-type washing and drying machine according to an embodiment of the present invention.

Fig. 2 is a vertical cross-sectional view of the outer tank, showing a cross-section taken along a vertical plane in the left-right direction viewed from the front side.

Fig. 3 is a longitudinal sectional view of the outer tank showing a section taken along a vertical plane in the front-rear direction when viewed from the right side.

Fig. 4 is a view showing the configuration of the right protrusion.

Fig. 5 is a partial sectional view along line B-B of Fig. 4(a).

FIG. 6 is a diagram showing a cross-sectional shape of a connection portion of a modified example.

Fig. 7 is a left side view of the drum.

Fig. 8 is a block diagram showing the electrical configuration of the drum-type washer-dryer.

Fig. 9 is a timing chart illustrating the content of operation during the final dehydration course.

Fig. 10 is a timing chart illustrating the content of operation during the drying course.

Fig. 11 is a graph showing the correspondence relationship between the upper limit temperature and the dehumidification water temperature and room temperature.

In the figure: 1-drum type washing and drying machine, 3-drying unit, 10-drum, 10L-left end wall, 10R-right end wall, 10C-surrounding wall, 10D-water hole, 101-ventilation hole, 11L, 11R-rotation shaft, 14-dehumidification water valve, 311-dehumidification water supply port, 40-control part, 7-outer tank, 71-exhaust port, 82-protrusion part, 821-ventilation hole, 829-connection part, 829A-slope, S2-dehumidification water temperature sensor.

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a vertical cross-sectional view of a drum-type washing and drying machine 1 according to an embodiment of the present invention, showing a cross-section cut along a vertical plane in the front-rear direction viewed from the right.

Referring to FIG. 1 , the drum-type washing and drying machine 1 , for example, has a roughly rectangular parallelepiped-shaped housing 2 . On the front side of the upper surface 2A of the casing 2, for example, an inclined surface 2B that becomes lower toward the front side is formed, and an opening 4 that can be opened and closed by an outer cover (not shown) is formed from the upper surface 2A of the casing 2 to the inclined surface 2B.

Inside the housing 2 is arranged a substantially cylindrical outer tank 7 whose both ends are closed by end walls (left end wall 7L and right end wall 7R), and its axis is arranged to extend left and right (approximately horizontally). The lower portion of the peripheral wall 7C of the outer tank 7 is supported by, for example, a plurality of dampers (not shown).

Fig. 2 is a longitudinal sectional view of the outer tank 7, showing a section when viewed from the front side along a vertical plane in the left-right direction. In addition, FIG. 3 is a longitudinal sectional view of the outer tank 7, and shows a cross section taken along a vertical plane in the front-rear direction seen from the right side.

Referring to FIGS. 1 to 3 , a drum 10 (drum 10 is omitted in FIG. 3 ) for accommodating laundry is arranged inside the outer tank 7 . The drum 10 has, for example, a substantially cylindrical shape in which both ends are closed by end walls (a left end wall 10L and a right end wall 10R), and its axis is arranged to extend left and right (approximately horizontally). In this embodiment, the diameter of the drum 10 is, for example, 520 mm.

Rotation shafts 11L, 11R extending along the axis of the drum 10 are respectively attached to the left and right end face walls 10L, 10R of the drum 10 . The respective rotating shafts 11L, 11R are attached so as to be rotatable with respect to the left and right end face walls 7L, 7R of the outer tank 7 . The rotary shaft 11L on the left side is connected to the drum driving motor 12 by, for example, DD (Direct Drive), so that the drum 10 connected to the rotary shaft 11L rotates around the axis at the same rotational speed.

Opening 22 for taking in and out of laundry is formed in peripheral wall 10C of drum 10 . Furthermore, an opening 23 is formed at a position facing the opening 4 of the housing 2 on the peripheral wall 7C of the outer tank 7 . The opening 22 of the drum 10 can be opened and closed by, for example, an outwardly rotatable drum cover 25 , and the opening 23 of the outer tank 7 can be opened and closed by, for example, an outwardly rotatable middle cover (not shown). The outer cover, the middle cover and the drum cover are all opened, so that the drum 10 can be taken out and the laundry can be put in.

On the casing 2, for example, a water supply port (not shown) is formed, through which tap water (hereinafter referred to as water) can be introduced into the machine from an external water supply pipe (tap water tap). The water supply port links to each other with the water supply valve 13 (referring to Fig. 8), and this water supply valve 13 is opened, just can import tap water in the machine by the water supply port. The tap water introduced into the machine is supplied into the outer tank 7 through the water supply pipe 17 connected to the rear end portion of the peripheral wall 7C of the outer tank 7 .

For example, a drain port 19 is formed on the lower right side of the peripheral wall 7C of the outer tank 7, and water can be stored in the outer tank 7 with the drain valve 18 (see FIG. 8) connected to the drain port 19 closed. In addition, when the drain valve 18 is opened, the water stored in the outer tank 7 can be discharged out of the machine through the drain port 19 .

A plurality of water passage holes 10D are formed in the peripheral wall 10C of the drum 10, and the water supplied to the outer tank 7 flows into the drum 10 through the water passage holes 10D. In addition, on the inner surface of the peripheral wall 10C of the drum 10, a baffle 10B for lifting the laundry in the drum 10 when the drum 10 rotates protrudes so as to extend in the left-right direction. During washing, with the rotation of the drum 10, the laundry in the drum 10 is lifted by the baffle 10B, and then falls freely from a certain height, and this action (turning over) is repeated, so that the laundry is stored in the outer tank 7 Pat on the surface of the water, so as to complete the so-called pat washing.

During dehydration, the drum 10 rotates at a high speed (for example, 300 to 1000 rpm), and the water immersed in the laundry in the drum 10 is thrown out by centrifugal force. The moisture thrown off by the laundry is scattered to one side of the outer tank 7 through the water hole 10D, and then discharged to the outside of the machine from the drain port 19.

The drum type washing and drying machine 1 has a function of drying dehydrated laundry, and a drying unit 3 for realizing the drying function is installed on the right end wall 7R of the outer tank 7 from the outside. The drying unit 3 includes: an air passage component 31 for guiding upward the air in the outer tank 7 sucked from the suction port 30 communicated with the inside of the outer tank 7; The air from the air path member 31 is sent into the fan 32 in the outer tank 7; the air from the fan 32 is used to guide the air from the fan 32 from the central part of the right end wall 7R of the outer tank 7 into the drying wind cover 33 in the outer tank 7; The first and second drying heaters 341, 342 (only one drying heater can be seen in Fig. device). The fan 32 is driven to rotate, for example, by a blower motor 35 (see FIG. 8 ).

An exhaust port 71 is formed at the rear lower portion of the peripheral wall 7C of the outer tank 7 , for example, at approximately the central portion in the left-right direction. The exhaust port 71 and the suction port 30 are connected, for example, by an inlet tube 72 extending in the left-right direction, and the air in the outer tank 7 enters the drying unit 3 (in the air path member 31 ) from the exhaust port 71 through the inlet tube 72 . On the end surface of the introduction pipe 72 on the exhaust port 71 side, an exhaust gas temperature sensor S1 (see FIG. 3 ) made of a thermistor protruding into the introduction pipe 72 is disposed. The exhaust temperature sensor S1 can detect the temperature (exhaust temperature) of the air in the outer tank 7 discharged from the exhaust port 71 . In addition, in this embodiment, the exhaust port 71 is formed in the rear side lower part of the peripheral surface wall 7C of the outer tank 7, so when drying, when the drum 10 rotates counterclockwise (reversed) when viewed from the right side, The air in the outer tub 7 flowing along with the rotation of the drum 10 enters the exhaust port 71 more easily than when it rotates in the reverse direction (forward rotation).

Bosses 81 and 82 for fixing the left and right rotation shafts 11L and 11R are respectively attached to the central parts of the left and right end walls 10L and 10R of the drum 10 from the outside. The raised part 82 on the right side constitutes the central part of the right end wall 10R of the drum 10, and is formed with a plurality of ventilation holes 821 (refer to FIG. The air sent out passes in the outer tank 7 . The central portion of the left end wall 10L of the drum 10 is formed with a plurality of ventilation holes 101 (referring to FIG. 7 ), and the air sent into the outer tank 7 by the drying air cover 33 of the drying unit 3 is shown by the arrow in FIG. 2 . , enters the drum 10 from the vent hole 821 of the right raised portion 82, and flows out of the drum 10 through the vent hole 101 formed in the left end wall 10L of the drum 10 and the vent hole 10D formed in the peripheral wall surface 10C. Then, the air flowing out of the drum 10 is reintroduced into the drying unit 3 from the exhaust port 71 of the outer tank 7 through the introduction pipe 72 . The air hole 101 is formed in the same shape as that of the water hole 10D, for example.

In this embodiment, the exhaust port 71 is arranged opposite to the peripheral wall 10C of the drum 10, so the air sent into the drum 10 by the drying unit 3 can be well introduced into the exhaust port 71 through the water hole 10D, and at the same time, Hot air can also pass through the ventilation holes 101 formed in the left end wall 10L of the drum 10 . That is, when the amount of laundry is small, the hot air flowing from the drum 10 through the water hole 10D to the air outlet 71 can dry the laundry near the inner peripheral surface of the drum 10 well. When the amount of laundry is large, the hot air flowing from the drum 10 through the water hole 10D to the exhaust port 71 can dry the laundry located in the center of the drum 10 well. Therefore, it is possible to generally dry the laundry well.

In particular, the central portion of the left end wall 10L of the drum 10 is provided with a ventilation hole 101, so that the air sent into the drum 10 from the drying unit 3 can be introduced from the right end wall 10R side to the left end wall along the axis of the drum 10. 10L side. Therefore, even when there is a large amount of laundry, hot air can be supplied to the laundry located in the center of drum 10, so that the laundry can be generally dried.

A cover 83 is attached to the boss portion 82 on the right side from the inside of the drum 10 . The cover 83 is formed with, for example, a plurality of through holes 831 through which air from the drying unit 3 is introduced into the drum 10 . The cover 83 can prevent the laundry in the drum 10 from flying to the outside of the drum 10 through the air hole 821 .

When drying, by sending hot air from the drying unit 3 into the drum 10 and rotating the drum 10, the baffle plate 10B lifts the laundry in the drum 10 and then falls freely at a certain height. This action is repeated. . Thereby, since hot air can be blown over the laundry, the laundry can be dried favorably.

In this embodiment, in order to improve the drying efficiency during drying, dehumidification water (cooling water) is introduced into the drying unit 3 . More specifically, part of the water introduced into the machine can be supplied into the air passage member 31 from the dehumidification water supply port 311 formed on the upper part of the air passage member 31, and the dehumidification water supplied to the air passage member 31 falls (flows down) into the wind passage. Road components 31 (see Figure 1). The dehumidified water can be supplied from the dehumidified water supply port 311 by opening the dehumidified water valve 14 (see FIG. 8 ), for example.

After removing the moisture from the laundry in the drum 10, the hot air introduced into the drying unit 3 is cooled by the dehumidification water in the process of being sent to the upper part through the air passage part 31, so that the moisture (moisture) is condensed, and the hot air is again It is sent into the drum 10 from the air cover 33 for drying. Thus, the moisture is removed by means of the hot air circulating inside the machine, and the hot air for drying can be sent into the drum 10, thereby improving the drying efficiency.

The dehumidified water falling into the air passage member 31 flows into the introduction pipe 72 through the suction port 30 . The right end of the introduction pipe 72 is in an expanded shape, so that the lower part of the right end of the introduction pipe 72 forms a storage portion 73 (see FIG. 2 ) for storing the dehumidified water flowing into the introduction pipe 72 from the air passage member 31 . On the lower part of the right end wall 7R of the outer tank 7, a dehumidification water temperature sensor S2 facing the storage part 73 is arranged, and the temperature of the dehumidification water can be detected by the dehumidification water temperature sensor S2. The dehumidification water temperature sensor S2 can be comprised by the thermistor made of SUS (stainless steel), for example.

FIG. 4 is a view showing the configuration of the right raised portion 82 . FIG. 4( a ) is a view showing the protrusion 82 seen from the left side (drum 10 side), and FIG. 4( b ) is a sectional view along line A-A of FIG. 4( a ).

Referring to FIG. 4 , the raised portion 82 includes, for example: a substantially circular shaft fixing portion 822 disposed in the center of the right end wall 10R of the drum 10 and formed with a fitting recess 822A for fitting the rotating shaft 11R; The drum fixing part 823 fixed to the right end face wall 10R of the drum 10 is an annular member arranged at a certain interval from the outer peripheral edge of the shaft fixing part 822; The six connecting portions 824 connect the outer peripheral edge of the shaft fixing portion 822 and the inner peripheral edge of the drum fixing portion 823 at a predetermined angle (for example, 60 degrees). The shaft fixing part 822 , the drum fixing part 823 , and the six connecting parts 824 define six spaces, and the spaces respectively constitute vent holes 821 for passing the air sent out from the drying unit 3 into the drum 10 .

In the inner peripheral portion of the drum fixing portion 823, six screw holes 825 for fixing the drum and three screw holes 826 for installing the cover are formed, and the screw holes 825 are used to fix the drum fixing portion 823 to the right end of the drum 10. Screws are screwed in to the surface wall 10R, and the screw holes 826 are used to screw in the screws when the cover 83 is attached to the drum fixing portion 823 . The six screw holes 825 for fixing the roller are respectively arranged on the extension lines of the six connection parts 824 .

For example, three annular labyrinth ribs 827 are formed at regular intervals in the radial direction along the circumference of the drum fixing portion 823 on the outer peripheral portion on the right side (the surface on the side of the outer tank 7 ). In the state that the roller 10 fixing the protrusion 82 is installed in the outer tank 7, two rings protruding from the inner surface of the right end wall 7R of the outer tank 7 are respectively installed in the space between the labyrinth ribs 827. Shaped labyrinth edge 828 (referring to Fig. 2). Utilize the labyrinth edge 827,828 that overlaps with each other to configure like this, can prevent the air that is sent into the outer tank 7 by drying unit 3 from passing through the inner surface of the right end wall 7R of the outer tank 7 and the outer surface of the right end wall 10R of the cylinder 10. Run out of the gap between them.

FIG. 5 is a partial cross-sectional view along the line B-B in FIG. 4( a ), showing the cross-sectional shape of the connecting portion 824 .

Referring to FIG. 5 , the connecting portion 824 includes: a main plate portion 824A extending parallel to the right end wall 10R of the drum 10 in the installed state, and a tab portion protruding from both side edges of the main plate portion 824A to the left (inside the drum 10 ). 824B. With this structure, the air sent from the drying unit 3 into the outer tank 7, as shown by the arrow in FIG. After the right side of the drum, its advancing route changes to a substantially vertical direction, and then flows into the drum 10 through the air hole 821 .

FIG. 6 is a cross-sectional view showing a connection portion 829 of a modified example.

This modified example connection portion 829 has two inclined portions 829A extending in an inclined direction toward the right end wall 10R of the drum 10 in an installed state. 10) has a protruding portion with a substantially triangular cross-section at the apex. On the other side edge of each inclined portion 829A, a protruding piece portion 829B protruding to the left side (inside the drum 10 ) is formed.

According to this structure, the hot air sent into the outer tank 7 by the drying unit 3, as shown by the arrow in FIG. Compared with the connection part 824 of the shape, the hot air sent by the drying unit 3 can be transported into the drum 10 more smoothly. Therefore, the laundry contained in the drum 10 can be dried better.

The right side of the inclined portion 829B of the connecting portion 829 in this modification is a plane, but not limited thereto. For example, the right side of the inclined portion 829B may be a curved surface.

FIG. 7 is a left side view of the drum 10 .

Referring to FIG. 7 , the protrusion 81 mounted on the central portion of the left end wall 10L of the drum 10 includes: a substantially circular shaft fixing portion 812 forming a fitting recess 812A for fitting the rotating shaft 11L; The outer peripheral edge of 812 is arranged at predetermined equiangular angles (for example, 60 degrees) in the circumferential direction, and six roller fixing portions 813 extend radially around the rotating shaft 11L. Each roller fixing portion 813 extends, for example, to about half the radius of the left end wall 10L. Further, at the front end of each drum fixing portion 813 , a drum fixing screw hole 815 for screwing in a screw when fixing the drum fixing portion 813 to the left end wall 10L of the drum 10 is formed.

A plurality of ventilation holes 101 for passing air sent into the drum 10 by the drying unit 3 are formed in a circular area passing through the front ends of the six drum fixing parts 813 on the left end wall 10L of the drum 10 . That is, a plurality of ventilation holes 101 are formed in a region between the respective drum fixing portions 813 on the left end wall 10L of the drum 10 . In this way, by installing the protrusion 81, the vent hole 101 can be formed in a region of high strength, thereby preventing the strength of the drum 10 from being lowered.

FIG. 8 is a block diagram showing the electrical configuration of the drum type washer dryer 1 .

The operation of the drum-type washing and drying machine 1 is controlled by, for example, a control unit 40 composed of a microcomputer. The control unit 40 includes, for example, a CPU, a RAM, a ROM, and the like.

The control unit 40 receives signals from the water level sensor S3, the room temperature sensor S4, and the like in addition to the signals from the exhaust gas temperature sensor S1 and the dehumidified water temperature sensor S2 described above. The water level sensor S3 sends a signal when the stored water reaches the specified water level in the outer tank 7 . In addition, the room temperature sensor S4 is a thermistor mounted on a control board constituting, for example, the control unit 40, detects the external temperature of the outer tank 7, and sends out a signal based on the detected result.

The control unit 40 is connected to the water supply valve 13, the drain valve 18, the dehumidification water valve 14, the drum driving motor 12, the blower motor 35, the first drying heater 341, and the second drying heater 342 as control objects, for example. wait. The control unit 40 opens and closes the water supply valve 13 and the drain valve 18 according to the signal from the water level sensor S3, thereby making the water level in the outer tank 7 a desired level. In addition, the control unit 40 can make the temperature of the air sent into the drum 10 lower (weaker state) by energizing any one of the first and second drying heaters 341, 342, and at the same time, by making the first and second Both of the second drying heaters 341 and 342 are energized, so that the temperature of the air sent into the drum 10 can be made higher (in a stronger state).

Fig. 9 is a timing chart illustrating the content of operation during the final dehydration course.

In this embodiment, during the final dehydration process which is the final stage of the dehydration process, the drying unit 3 may send hot air into the drum 10 for dehydration (heating dehydration). In the final dehydration process, first, the dehumidification water valve 14 is opened for a predetermined time (for example, 60 seconds), and the dehumidification water is stored in the water storage part 73 (T1-T2). Meanwhile, the first drying heater 341, the second drying heater 342, and the blower motor 35 are in an OFF state, and the water supply valve 13 is in a closed state, and the drum driving motor 12 (drum 10) only rotates for a predetermined time. The low-speed reverse rotation makes the laundry in the drum 10 lifted by the baffle 10B fall freely from a certain height (beating and dehydrating). The temperature of the dehumidified water stored in the water storage unit 73 is detected by the dehumidified water temperature sensor S2 , and the result (temperature data of the dehumidified water) is stored in the control unit 40 .

When the dehumidifying water valve 14 is closed (T2), the blower motor 35 starts to drive, and the rotation speed of the blower motor 35 reaches about 4500 rpm in, for example, 5 seconds (T3). At this time, the first drying heater 341 is turned on (ON), whereby the drive of the drying unit 3 is made weak, and the heating and dehydration starts.

During the heating and dehydration process, the temperature inside the drum 10 (inside the outer tank 7 ) is relatively low. Therefore, supplying dehumidified water into the drying unit 3 will prevent the temperature inside the drum 10 from rising. In this embodiment, the dehumidification water valve 14 is kept closed during the heating and dehydration process, so that the temperature rise in the drum 10 can be kept in a good state. At the beginning of the subsequent drying process, since the temperature inside the drum 10 can be better raised, the drying efficiency can be improved and the time required for the drying process can be shortened. In addition, since hot air is supplied into the drum 10 to perform dehydration during the heating dehydration process, dehydration efficiency can be improved.

At the start of heating and dehydration (T3), for example, the drum driving motor 12 is reversed only for a predetermined short time, and the laundry in the drum 10 is opened (open dehydration), and then the drum driving motor 12 is rotated forward. And maintain the rotation speed at about 150rpm (the first dehydration start). After a predetermined period of time (T4), the forward rotation speed of the drum driving motor 12 is further increased to about 400 rpm (T5), and the drum driving motor 12 gradually decreases in speed and stops (the first high-speed dehydration). When the rotation speed of the drum driving motor 12 starts to drop (T5), the second drying heater 342 is turned on (ON), whereby any one of the first and second drying heaters 341, 342 is turned on (ON). ) state, the drive of the drying unit 3 can be made into a strong state.

When the first high-speed dehydration is completed, the drum driving motor 12 repeats forward rotation and reverse rotation at a predetermined speed to perform a process for peeling off the laundry attached to the inner surface of the drum 10 at the first high speed (first laundry peeling) (T6~T7). Thereafter, the drum driving motor 12 is reversed again for a short predetermined time and is turned on for dehydration. After that, the drum driving motor 12 rotates forward and maintains a speed of about 150 rpm (the second dehydration start).

After the specified time (T8), the rotating speed of the drum driving motor 12 in the forward rotation direction is further improved, reaching about 700rpm (T9). The rotation speed of the machine gradually decreases, and then stops (the second high-speed dehydration). The first drying heater 341 is turned off (OFF) during the period from the start of the second high-speed dehydration (T8) to the start of the decrease in the rotation speed of the drum driving motor 12 (T10). That is, during this period (T8-T10), only by making the second drying heater 342 in the ON state, the drive of the drying unit 3 can be turned into a weak state, and after this period, the second drying heater 342 is turned on again. 1 When the drying heater 341 is in the ON state, the drying unit 3 is driven strongly.

When the second high-speed dehydration is completed, the drum driving motor 12 is repeatedly rotated forward and backward at a predetermined speed to perform a process for peeling off the laundry attached to the inner surface of the drum 10 during the second high-speed dehydration (the second laundry peeling process). ) (T11~T12). Thereafter, the drum driving motor 12 is reversed again for a short predetermined time and turned on for dehydration, and then the drum driving motor 12 rotates forward and maintains a rotation speed of about 150 rpm (the third dehydration start).

After a predetermined time elapses (T13), the rotation speed of the drum driving motor 12 further increases in the normal rotation direction. When the rotation speed of the drum driving motor 12 reaches about 1100rpm (T14), after the drum driving motor 12 maintains the rotation speed at this rotation speed for a predetermined time (T15), the rotation speed of the drum driving motor 12 is increased, and the rotation speed of the rotation speed of the drum driving motor 12 is increased within a predetermined time at a rotation speed of about 1200rpm. Rotation (T16), after that, the rotation speed of the drum driving motor 12 gradually decreases, and then stops (the third high-speed dehydration). The first drying heater 341 is turned off (OFF) during the period from the start of the third high-speed dehydration (T13) to the start of decreasing the rotation speed of the drum driving motor 12 (T16). That is, during this period (T13-T16), only by making the second drying heater 342 in the ON state, the drive of the drying unit 3 can become a weak state, and after this period passes, the second 1 When the drying heater 341 is in the ON state, the drying unit 3 is driven strongly.

In this embodiment, the water supply valve 13 is only opened for a predetermined time (for example, 10 seconds) during the third high-speed dehydration period, especially during the period (T14-T15) of the drum driving motor 12 rotating forward at about 1100 rpm. According to this configuration, the water supplied to the outer tank 7 contacts the peripheral surface of the drum 10 rotating at high speed and is scattered throughout the outer tank 7, and the scattered water can remove the detergent adhering to the outer tank 7 and the drum 10. Ingredients (bubbles).

When the third high-speed dehydration is completed, the drum driving motor 12 is repeatedly rotated forward and backward at a predetermined speed to perform a process for peeling off the laundry attached to the inner surface of the drum 10 during the third high-speed dehydration (the third laundry peeling process). ) (T17-T18), and then, the second drying heater 342 is turned off (OFF), and finally the dehydration process (dehydration process) ends.

In this embodiment, just as during the high-speed dehydration acceleration period and when the rotation speed of the drum 10 is maintained at a high speed, during the period (T8-T10, T13-T16) when the driving current of the drum driving motor 12 is large, the drying unit is activated. 3 is driven weakly, and the current consumed by the drying unit 3 (first and second drying heaters 341, 342) can be suppressed. Thus, it is possible to prevent the amount of electric current used from exceeding a predetermined value during the operation of the drum-type washer-dryer 1 , thereby prolonging the life of each component constituting the drum-type washer-dryer 1 .

In this embodiment, by turning on (ON) one of the first and second drying heaters 341 and 342, the drive of the drying unit 3 can be in a weak state, and by turning on (ON) the first and second Both the drying heaters 341, 342 can make the driving of the drying unit 3 into a strong state. Therefore, if the time that the first drying heater 341 is turned on (ON) is the same as the time that the second drying heater 342 is turned on (ON), the first and second drying heaters 341 , 342 when on/off (ON/OFF) is combined, the service life of each drying heater 341, 342 can be made equal. Thus, the life of the drying unit 3 is further extended.

The period (T5-T8, T10-T13) during which the drying unit 3 is driven in a strong state is preferably about 200 seconds or more. During this period, the rotation speed of the drum driving motor 12 is maintained at about 150 rpm, and such processing is performed, that is, the processing of suppressing the eccentric load caused by the deflection of the laundry in the drum 10 can be performed when the eccentric load is The timing (T8, T13) below the specified value enters into high-speed dehydration. In this case, even if the eccentric load is below a predetermined value, when a predetermined time (for example, about 20 seconds) has not elapsed since the driving of the drying unit 3 is in a strong state, it will not enter high-speed dehydration. Only then can it enter high-speed dehydration.

Fig. 10 is a timing chart illustrating the content of operation during the drying course.

When the dehydration process (final dehydration process) ends, the drying process is performed. The drying process includes: the pre-drying period (T19-T23) in which the exhaust temperature and dehumidification water temperature gradually rise from the drying process; the constant-speed drying period (T23-T25 ); the deceleration drying period (T25~T26) when the exhaust gas temperature gradually rises and the dehumidification water temperature gradually drops.

When the drying process (pre-drying period) starts (T19), the first drying heater 341 that is in the ON state (ON) state at the end of the final dehydration process is maintained in the ON state (ON) state, and is turned on. The drain valve 18 in the state is also maintained in the open state, and at the same time, the dehumidification water valve 14 is opened to supply dehumidification water into the drying unit 3 . At this time, the rotation speed of the blower motor 35 at about 4500 rpm is reduced to a predetermined rotation speed.

In addition, when the pre-drying process starts, the drum driving motor 12 rotates forward at a predetermined rotation speed only for a predetermined time (T19-T20). By measuring the moment of inertia of drum 10 during this period, the amount of laundry (loaded amount) can be detected. Thereafter, the drum driving motor 12 rotates forward at about 50 rpm for 60 seconds, then stops for 3 seconds, then reverses at about 50 rpm for 60 seconds, and then stops for 3 seconds. The above operations are repeated.

The drum drive motor 12 has passed a predetermined time after the above-mentioned repeated forward rotation/reverse rotation operation (T20). Both the dry heaters 341 and 342 are in the ON state, and the driving of the drying unit 3 can be switched from a weak state to a strong state. Then, the rotation speed of the blower motor 35 is gradually increased (T22), and then maintained at a rotation speed of about 4500 rpm.

During the pre-drying period, the exhaust gas temperature and the dehumidification water temperature gradually increase at approximately the same rate. After a certain period of time, the exhaust gas temperature and the dehumidification water temperature become substantially constant, and the constant-speed drying period (T23) enters. During constant speed drying, the 1st and the 2nd drying heater 341,342 are connected (ON) state (the driving of drying unit 3 is strong state), the rotating speed of blower motor 35 is maintained at about 4500rpm, simultaneously , by opening the dehumidification water valve 14 to supply dehumidification water into the drying unit 3, the laundry can be dried effectively. In addition, during the drying process, the room temperature detected by the room temperature sensor S4 gradually rises at a certain low rate (a rate lower than the exhaust gas temperature and the dehumidification water temperature during the pre-drying period).

After a predetermined time (for example, 90 minutes) from the start of the drying process (T19), the drum drive motor 12 rotates forward at a speed of about 50 rpm for 60 seconds, stops for 3 seconds, and then reverses at a speed of about 40 rpm for 180 seconds. Stop for another 3 seconds, and switch to the above action repeatedly (T24). The driving mode of the drum driving motor 12 is maintained until the drying process ends (T26). The timing of switching the driving mode of the drum driving motor 12 is determined based on, for example, the load of laundry, room temperature, and dehumidification water temperature.

In this way, during the predetermined period (T24-T26) before the end of the drying process, the rotation speed of the drum 10 (drum drive motor 12) in the reverse direction is switched to a lower rotation speed, and at the same time, the switching time of the rotation of the drum 10 in the reverse direction Therefore, the force acting on the laundry in the drum 10 can be reduced by switching the rotation direction of the drum 10 . Thereby, torsion force generated on the laundry can be suppressed, and wrinkles generated on the laundry can be favorably reduced.

When the rotation speed of the drum 10 is reduced too much, the centrifugal force acting on the laundry in the drum 10 will become smaller. Covered with washing. At this time, the hot air sent from the drying unit 3 leaks from the gap between the labyrinth ribs 827 and 828, and the laundry may not be dried well.

In addition, as mentioned above, in this embodiment, when the drum 10 is rotated in the reverse direction, the air in the outer tank 7 is more likely to enter the air outlet 71 than when the drum 10 is rotated forward. The flow of the hot air from the temperature sensor S1 will become poor, and the exhaust gas temperature will become higher. In this case, the difference in exhaust temperature between the forward rotation and the reverse rotation of drum 10 becomes large, and the laundry may not be dried satisfactorily.

Therefore, in this embodiment, during the predetermined period (T24-T26) before the end of the drying process, the drum 10 (the motor for driving the drum) is lowered only in the direction (reversing direction) in which the air in the outer tub 7 easily enters the exhaust port 71. 12) the speed of rotation, and extend the rotation time. The laundry can thus be dried well.

However, when the load of the laundry is reduced, wrinkles are less likely to occur on the laundry, and therefore, the above-mentioned control need not be performed when the load does not reach a predetermined value.

When the laundry is wet, the amount of heat applied to the laundry to evaporate moisture from the laundry (the amount of heat exchange between the hot air supplied to the drum 10 and the laundry) is approximately constant, so the exhaust temperature is also approximately constant. When the laundry is dry, the amount of heat applied to the laundry to evaporate water from the laundry is small, so the deceleration drying period ( T25 ) in which the exhaust gas temperature gradually becomes higher begins. During deceleration drying, as mentioned above, the amount of heat exchange between the hot air supplied to the drum 10 and the laundry becomes smaller, and the dehumidification water is supplied into the drying unit 3 at a certain flow rate, so that the temperature of the dehumidification water gradually decreases. .

In this embodiment, the exhaust gas temperature (upper limit temperature) at the end of the drying process is determined according to the dehumidification water temperature and room temperature detected at the beginning of the final dehydration process. When the exhaust gas temperature reaches the upper limit temperature (T26) The trip is over. With such a configuration, the drying process is completed not only by the dehumidification water temperature but also by the upper limit temperature determined by taking the room temperature into consideration, so that the laundry can be dried better. In addition, since the dehumidification water temperature is detected during the period (T1-T2) when the first and second drying heaters 341 and 342 are OFF (OFF), the hot air sent by the drying unit 3 can The dehumidification water temperature is detected before the dehumidification water is heated. Thereby, a more appropriate upper limit temperature can be determined, so as to dry the laundry better.

Fig. 11 is a graph showing the correspondence relationship between the upper limit temperature and the dehumidification water temperature and room temperature.

Referring to Fig. 11, for example, if the dehumidification water temperature WT before the drying operation (at the start of the final dehydration process) is different from 10°C (WT<10, 10≤WT<20, 20≤WT<30, 30≤WT) , The upper limit temperature is also a different value, such as room temperature KT is different from 10 ℃ (KT<10, 10≤KT<20, 20≤KT<30, 30≤WT<40, 40≤KT), the upper limit temperature is also different value. More specifically, the higher the dehumidification water temperature WT is, the higher the upper limit temperature is set, and the higher the room temperature KT is, the higher the upper limit temperature is set.

However, the upper limit temperature can be determined not only according to the dehumidification water temperature at the start of the final dehydration process, but also by detecting the dehumidification water temperature at the start of the final dehydration process and the start of the drying process, and based on the average of these dehumidification water temperatures. value to determine.

Referring to Fig. 10 again, in the drying process (during the deceleration drying period), when the exhaust gas temperature reaches the upper limit temperature (T26), the first and second drying heaters 341, 342 are disconnected, the drying process ends, and the pair enters A cooling process (T26-T28) in which the laundry is cooled.

During the cooling process period, before the exhaust gas temperature becomes approximately the same as the exhaust gas temperature during the constant-speed drying period (the temperature detected at the end of the cooling process) (T27), the drum driving motor 12 rotates 180 degrees forward at a speed of about 40 rpm. seconds, then stop for 3 seconds, then reverse at a speed of about 40rpm for 180 seconds, then stop for 3 seconds, and repeat the above actions. During the cooling process, the rotation speed of the blower motor 35 may be further increased to shorten the cooling time of the laundry.

In addition, during the cooling stroke, the drain valve 18 is temporarily opened after being closed for a certain period of time, and then closed again. This action can be used to perform such a process of discharging the lint separated from the laundry and stored in the lower part of the outer tank 7 (discharging lint processing). ). In the processing of this lint discharge, the dehumidified water stored in the lower part of the outer tank 7 is discharged out of the machine together with the lint by closing the drain valve 18 for a certain period of time.

When the exhaust gas temperature drops to the detection temperature (T27) at the end of the cooling process, for example, the remaining time of the cooling process is set to 2 minutes. seconds, then reverse at a speed of about 40rpm for 30 seconds, then stop for 3 seconds, and switch repeatedly as above.

Thus, in the cooling process, the time for the forward rotation and reverse rotation of the drum driving motor 12 (drum 10) is changed from a long state (180 seconds; T26-T27) to a short state (30 seconds; T27-T28). Such a configuration can eliminate the entanglement of the laundry in the drum 10 and spread it well. Therefore, the wrinkles generated on the laundry can be preferably reduced.

In the above-mentioned embodiment, only the case where the drying course is performed after the washing (dehydration course) is described, but the drum type washing and drying machine 1 may only perform the drying course. In the case where only the drying process is performed, the first drying heater 341, the dehumidification water valve 14 and the drain valve 18 are opened at the same time as the operation start (T19) to start the rotational drive of the blower motor 35.

When only the drying process is performed, the temperature of the dehumidification water supplied within a predetermined time period (for example, 5 minutes) from the start of the drying process (T19) can be detected, and the upper limit temperature can be determined according to the temperature of the dehumidification water. In this case, during the period (T19-T20) when the second drying heater 342 is in the off state (OFF), that is, when the driving of the drying unit 3 is in a weak state, the configuration of detecting the temperature of the dehumidification water can be The temperature of the dehumidification water is detected before the hot air sent by the drying unit 3 heats the dehumidification water. Thereby, a more appropriate upper limit temperature can be determined so as to dry the laundry better.

In addition, in the above-mentioned embodiment, the configuration in which the drying process ends and the cooling process starts when the exhaust gas temperature reaches the upper limit temperature has been described. However, for example, after the exhaust gas temperature reaches the upper limit temperature, the drum 10 may be rotated for a predetermined time to send hot air into the drum 10 (extending the drying process).

In addition, in the above-mentioned embodiment, only the structure in which the drying process is completed based on the upper limit temperature determined by the dehumidification water temperature and the room temperature has been described, but it may also be the case where the temperature difference between the exhaust gas temperature and the dehumidification water temperature reaches a predetermined value. The above time ends the drying process.

As far as conventional drum-type washing and drying machines are concerned, the standard is: the drying capacity (for example, 4.5kg) is about 60% or less of the washing capacity (for example, 8kg), or the drum volume (for example, 66.6 liters) is equal to the drying capacity. The volume ratio (drum capacity/drying capacity) of (for example, 4.5kg) is about 14 or more, and according to the drum type washing and drying machine 1 having the above structure, the drying capacity (for example, 6kg) is equal to the washing capacity (for example, 8kg). 7.5% or so, the volume ratio is about 11. That is, more laundry can be efficiently dried.

The present invention is not limited by the contents of the above embodiments, and various modifications can be made within the scope described in the technical claims.

For example, the axis of the drum 10 is not limited to extending in the left-right direction, and may be configured to extend in the front-rear direction, for example. In this case, the axis of the drum is not limited to extending substantially in the horizontal direction, but may be inclined within a predetermined angle range (for example, 30 degrees) with respect to the horizontal direction.

The invention related to the dehumidification water supply is not limited to the drum-type washer-dryer, for example, it is also applicable to the pulse-type washer-dryer with the function of drying clothes.

Claims (7)

1. A washing machine with a function of drying clothes, the washing machine having a drum rotatable centering on a rotating shaft set within a predetermined angle relative to the horizontal direction, and an outer tank surrounding the drum, in which clothes are accommodated In the state inside the drum, clothes can be dried by supplying hot air from one end face of the drum to the inside of the drum, and it is characterized in that it includes: a water hole formed on the peripheral surface of the drum and capable of passing water thrown from the clothes when the drum is rotated to apply a centrifugal force to the clothes in the drum for dehydration; A ventilation hole is formed on the other end surface of the above-mentioned drum, and can allow the hot air sent from one end surface side of the drum to pass through; The exhaust port is formed on the position of the outer tank facing the peripheral surface of the drum, and is used to discharge the hot air coming out of the drum through the water hole and the air hole to the outside of the outer tank, In addition, it also includes: a rotating shaft installed at the central part of the other end surface of the drum; a rotating shaft installation protrusion arranged at the central part of the other end surface of the drum for installing the rotating shaft; a plurality of ribs provided on the rotating shaft mounting boss and extending radially around the rotating shaft, The vent hole is formed on a portion of the other end surface of the drum corresponding to a formation area between the plurality of ribs. 2. The washing machine according to claim 1, further comprising: a rotating shaft installed at the central portion of one end face of the drum; a protrusion for installing the rotating shaft is arranged on one end surface of the drum for installing the rotating shaft; The supply port is provided on the protrusion for installing the rotating shaft, and is used for supplying hot air into the drum; The supply port constituting member defines the supply port and forms an inclined surface inclined with respect to a direction perpendicular to the hot air flow direction on the surface upstream in the hot air flow direction. 3. The washing machine according to claim 1, further comprising: a drying device for supplying hot air into the drum, a drying stroke actuator that can execute a drying stroke for drying clothes by supplying hot air into the drum from the drying device, and The heating and dehydration stroke actuator can execute the heating and dehydration stroke before the drying stroke starts. In the heating and dehydration stroke, the drying device supplies hot air to the drum, and the drum rotates to apply centrifugal force to the clothes in the drum to perform dehydration; During the heating and dehydration process, when the current for driving the drum is relatively large, the driving mode of the drying device is switched so that the current consumed by the drying device is relatively small. 4. The washing machine according to claim 1, wherein: It is a washing machine with a clothes drying function that can supply hot air to a storage room that holds clothes to dry clothes. This washing machine also includes: a drying device for supplying hot air to the containing room; The cooling water supply mechanism can supply cooling water, and the cooling water is used to cool the hot air supplied to the accommodation chamber by the drying device and remove moisture contained in the hot air, a drying course executing mechanism capable of performing a drying course in which the clothes are dried by supplying cooling water from the cooling water supply mechanism and supplying hot air into the storage chamber by the drying device, and The heating and dehydration stroke actuator can execute the heating and dehydration stroke before the drying stroke starts. In the heating and dehydration stroke, the drying device supplies hot air to the storage chamber and dehydrates the clothes in the storage chamber by applying centrifugal force; The cooling water supply mechanism stops supplying cooling water during the heating and dehydration stroke. 5. The washing machine according to claim 1, characterized in that: it has a clothes drying function, and the washing machine has a rotatable drum centered on a rotating shaft set within a specified angle relative to the horizontal direction, and the clothes are stored in In the state inside the drum, it is possible to perform a drying course in which the drum is rotated repeatedly switching in one direction and the other direction, and the clothes are dried by supplying hot air into the drum, During a predetermined period before the end of the drying process, the driving mode of the drum is switched so as to reduce the force acting on the laundry in the drum by switching the rotation direction of the drum. 6. The washing machine according to claim 1, further comprising: a drying device for supplying hot air into the drum, a drying stroke actuator that can execute a drying stroke for drying clothes by supplying hot air into the drum from the drying device, and The cooling stroke actuator can execute the cooling stroke after the drying stroke is finished, and the cooling stroke is used to rotate the drum repeatedly switching in one direction and another direction when the drying device stops supplying hot air. cooling clothes; During a predetermined period before the end of the cooling process, the rotation time of the drum toward at least one side is switched to a shorter time. 7. The washing machine according to claim 1, wherein: It is a washing machine with a clothes drying function that can supply hot air to a storage room for clothes to dry clothes. This washing machine also includes: a drying device for supplying hot air to the containing room, The cooling water supply mechanism can supply cooling water, and the cooling water is used to cool the hot air supplied to the accommodation chamber by the drying device and remove moisture contained in the hot air, a drying course executing mechanism capable of performing a drying course in which the clothes are dried by supplying cooling water from the cooling water supply mechanism and supplying hot air into the accommodating chamber by the drying device, and The cooling water temperature detection mechanism detects the temperature of the cooling water supplied by the cooling water supply mechanism before the drying device starts supplying the hot air into the storage chamber, or within a specified period from the start of supplying the hot air; The drying stroke actuator performs timing according to the cooling water temperature detected by the cooling water temperature detection mechanism, and ends the drying stroke.

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