JP2005124760A - Drum type washing-drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing-drying machine for which an air passage to suppress the temperature rise of a door body is formed so that the door body can be opened even in the middle of a drying process. <P>SOLUTION: When air is discharged from an exhaust port 21, air in a rotating drum 2 is discharged from the inside of a water tub 3 through a through hole 8, is dehumidified in a dehumidification duct 16, and is fed to a heating duct 19 located on the back surface side by an air feeding duct 18, is heated by a heater 20, and is fed into the rotating drum 2 from the back surface side of the water tub 3 through an air feeding port 22 as dry hot air. The hot air which is fed into the rotating drum 2 takes moisture away from laundry, becomes hot air containing a large amount of water vapor, and generates moisture condensation when the steam is condensed by being cooled when hitting the door body 9 located on the front surface side facing the air feeding port 22. By the discharge of the condensation heat of the moisture condensation and the evaporation heat, the temperature rise of the door body 9 is suppressed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drum-type washing and drying machine that performs washing, rinsing, dehydration, drying, and the like in a rotating drum that is rotatably supported in a water tank in a horizontal axis direction or a direction inclined from the horizontal direction. Is.

  A drum-type washing machine for washing laundry by sequentially executing a washing process, a rinsing process, and a dewatering process by putting the laundry in a rotating drum rotatably arranged in the water tank and rotationally driving the rotating drum. By being provided with a drying function, the drum type washing machine can be configured as a drum type washing and drying machine capable of executing a drying process for drying the laundry after the dehydration process. In the drying function, air containing moisture in the rotating drum containing the laundry containing moisture and the water in the water tank that circulates air is exhausted to the outside of the water tank, and the moisture in the exhausted air is dehumidified by the dehumidifying means and then heated. It is constituted so that the warm air heated and dried by means is blown into the water tank again, the air containing moisture is exhausted, and the air circulation in which the dried warm air is blown is continued, so that The laundry is dried.

Since the rotating drum has a large number of through-holes through which water and air can pass through the entire peripheral surface, when the exhaust is exhausted from the water tank containing the rotating drum, moisture in the rotating drum containing the laundry containing moisture is removed. The contained air passes through the through hole and is discharged from the water tank to the outside of the water tank. On the other hand, when hot air that has been dehumidified from air containing exhausted moisture and dried by heating is blown into the rotating drum, even if it is simply blown into the water tank, it will mix with the exhaust containing moisture and the drying capacity will decrease. The warm air is blown into the rotating drum from the front opening of the rotating drum which is opened to take in and out the laundry from the rotating drum (see Patent Document 1).
Japanese Patent Laid-Open No. 7-47195 (pages 2 to 4, FIG. 1)

  However, just before the front opening of the rotating drum, there is a door body that opens and closes when the laundry is put in and out, so that heated air is blown from the front opening into the rotating drum. Then, since the heated air hits the door body, the temperature of the door body rises and becomes too hot to be touched by the hand. In particular, when a drying course is set in which the heating temperature of the air is set high so that drying can be completed in a short time in the drying process, the temperature rise of the door body becomes significant, and it reaches a temperature that causes burns. Heated.

  The laundry dryer not only continues the drying process until the laundry is completely dried, but also opens the door in the middle of the drying process to take out the freshly dried laundry from the rotating drum, and then dries it completely by drying in the sun. By using it, users can freely open the door, such as how to save power consumption required for the drying process, and how to take clothes out during drying because it is more convenient to dry clothes for ironing clothes etc. Since it is comprised, the advantage which can open a door body freely cannot be utilized if the door body is heated even to the temperature which causes a burn by blowing of heated air.

  An object of the present invention is to provide a drum-type washing and drying machine capable of arbitrarily opening the door body by suppressing the temperature rise to the extent that even if the door body is touched in the drying process. There is.

  In order to achieve the above object, in the drum type washing and drying machine according to the present invention, a water tank formed in a substantially bottomed cylindrical shape is disposed in a casing with its opening facing the front side of the casing. A rotating drum that is housed in a cylindrical drum with a bottom having a large number of through-holes in the water tank and that is rotated by a drum drive motor is disposed opposite the water tank opening of the housing. A door body that opens into the rotating drum is provided at a position to be opened and closed, and the air exhausted from the water tank is blown into the water tank through the air circulation path provided with the dehumidifying means, the air blowing means, and the heating means. The air circulation path is provided, and control means for controlling the operation of each part according to each process of washing, rinsing, dehydration and drying is provided, and the air blown into the water tank is provided in the rotating drum. To the front opening of the aquarium Characterized by comprising provided at a position where the road is formed.

  According to the above configuration, when the blower port is provided at a position where the air flow path is formed so that the blown air passes through the rotating drum and toward the front opening of the water tank, the dry hot air from the blower port is washed. Moisture contained in the object is deprived from the object and becomes a hot air containing a large amount of water vapor, which is blown to the door body disposed opposite to the front opening of the water tank. Since the door body is exposed to the outside of the housing and the temperature is low, when hot air containing a large amount of water vapor hits the water vapor contained in the hot air due to the temperature difference. Condensation occurs on the inner surface to cause condensation. Condensation occurs on the inner surface of the door body until the moisture contained in the laundry disappears, and when the water vapor condenses and condenses, it releases condensation heat, and the generated condensation is promoted by evaporation. Therefore, as a result of releasing the heat of vaporization, the temperature of the door body, which normally increases in temperature by the warm air blown, can be lowered. In this configuration, hot air with high dry temperature immediately after blowing does not hit the door body, and warm air that contains water vapor passing through the rotating drum hits the door body. As a result, the door can be touched in the drying process, and the laundry can be taken out by opening the door in the middle of the drying process.

  In the above configuration, when the blower port is formed at a portion facing the front opening on the back of the water tank, a flow path of the blown air such that the air blown as described above passes through the rotating drum toward the front opening of the water tank. Can be formed.

  In addition, the air blowing port is formed below the center of the back of the water tub so that a flow path through which the warm air is passed through the laundry being stirred in the rotating drum is formed, and the dry hot air receives moisture from the laundry. Can be applied to the door body as air containing water vapor, can reduce the temperature of the door body due to condensation, can suppress the temperature rise, and the laundry can be dried more efficiently. The

  The control means is preferably configured to control the heating means based on the temperature detection of the air blown into the water tank, and manages the temperature of the blown air to suppress the temperature rise of the door body. It can be dried with less damage to the laundry.

  According to the present invention, since the warm air blown from the blower opening deprives the laundry of moisture and hits the door body in a state containing a large amount of water vapor, the temperature rise of the door body is suppressed by the condensation generated in the door body. When the door is opened during the drying process, it is possible to prevent the temperature from rising before causing a burn.

  FIG. 1 shows a configuration of a main part of a drum-type washing / drying machine 1 according to the embodiment. A water tank 3 is supported in an obliquely inclined state by a suspension structure (not shown) in a washing machine housing 6, The rotary drum 2 formed in a bottomed cylindrical shape is rotatably supported. The rotary drum 2 is rotationally driven by a drum drive motor 7 attached to the back of the water tank 3 so that the rotational speed can be varied and the rotational direction can be switched. Further, since the rotating drum 2 is inclined so that the direction of the rotation axis is inclined downward from the front side opening as shown in the drawing toward the back side as the bottom surface, the front side of the washing machine casing 6 is arranged. Opening the door body 9 that can be opened and closed on the inclined surface 6a formed on the rotating drum 2 reduces the amount of bending when the laundry is taken in and out of the rotating drum 2, and the drum-type washing machine 1 Since there is no need to secure a space on the front side, the drum-type washing and drying machine 1 can be installed in a narrow space such as a washroom.

  In addition to the above-described components, the washing machine housing 6 includes a water supply unit 12 for supplying water into the aquarium 3, a drainage unit 13 for draining water in the aquarium 3 to the outside, and the like. Further, as shown in FIGS. 2 and 3, the air in the water tank 3 exhausted from the exhaust port 21 is dehumidified so that a drying process of drying the laundry accommodated in the rotary drum 2 can be performed. 16, a drying air circulation path through which air is blown again from the blower opening 22 into the water tank 3 through the yarn waste collecting filter 17, the blower duct 18, and the heating duct 19 is configured.

  As shown in FIG. 2, the dehumidification pipe line 16 is formed adjacent to the side peripheral surface of the water tank 3, and communicates with the inside of the water tank 3 through an exhaust port 21 that opens to the side peripheral surface of the water tank 3. Dehumidifying means 38 having a water injection nozzle 52 and a heat exchanger 51 through which water sprinkled from the water injection nozzle 52 flows is disposed in the dehumidification pipe line 16, and the air in the water tank 3 exhausted from the exhaust port 21. Is dehumidified by being cooled by the dehumidifying means 38. The dehumidifying duct 16 is connected to the air duct 18 on the front side of the washing machine housing 6, and a lint collecting filter 17 that filters dust such as lint contained in the air is provided at the inlet of the air duct 18. It is arranged. The air duct 18 is a duct for guiding air to the heating duct 19 disposed on the back side of the water tank 3, and is disposed adjacent to the side peripheral surface of the water tank 3 together with the dehumidifying duct 16. As shown in FIG. 3, the air duct 18 is connected to a heating duct 19 formed in a substantially arc shape on the back side of the water tank 3, and the air circulation path for drying is provided by the air fan 15 disposed in the connection portion. A one-way air flow is formed.

  A heater 20 is disposed in the heating pipe 19 and heats the air flowing from the blower pipe 18 and feeds it into the water tank 3 as hot air that has been heated and dried from a blower opening 22 that leads to the water tank 3. . The heating pipe 19 is provided with a temperature sensor 55 that constitutes a temperature detector 54 that detects the temperature of the air blown from the blower opening 22, and the detected temperature of the blown air is input to the control device 40 described later. The heating temperature by the heater 20 can be adjusted. The heating pipe 19 detects an abnormal overheating state of the heater 20 and shuts off the power to the heater 20, and the overflow water level where water or bubbles flowing back from the blower port 22 flows into the blower fan 15 side. An overflow water level sensor 29 for detecting the above is disposed.

  The drum-type washing and drying machine 1 configured as described above performs a washing process, a rinsing process, and a dehydrating process by a control operation by a control device 40 configured as shown in FIG. 4, and a drying process is performed as necessary. The

  In FIG. 4, the control unit 41 configured by a microcomputer uses a control program stored in the storage unit 45 in response to a setting input such as selection of a driving course input from the setting unit 43 to the power switching unit 42. Output control commands. The power switching unit 42 is configured using a switching element such as an SCR, and in response to a control command output from the control unit 41, the drum drive motor 7, the water supply valve 50, the drainage pump 49, the blower fan 15, the heater 20, and the water injection valve ON / OFF control of 53 and the like.

  The drum-type washing and drying machine having the above-described configuration is configured to perform a drying process for drying the dehydrated laundry after completion of the washing process, the rinsing process, and the dehydrating process, or to dry wet clothes and the like. It is also possible to arbitrarily carry out only the drying step. When the execution of the drying process is selected and input from the setting unit 43, the control unit 41 turns on the blower fan 15 and the heater 20, and outputs a control command to open the water injection valve 53 to the power switching unit 42. The drying operation for circulating the air in the water tank 3 through the drying air circulation path by rotating the blower fan 15 is performed.

  As shown in FIG. 2 and FIG. 3 by the white arrows, the air in the rotary drum 2 is discharged into the water tank 3 from the through-holes 8 formed in the peripheral surface by the rotation of the blower fan 15 and the exhaust port 21. To the dehumidifying pipe 16. A heat exchanger 51 is disposed in the dehumidifying conduit 16, and dehumidifying means 38 is configured to sprinkle water injected by opening the water injection valve 53 from the water injection nozzle 52 onto the heat exchanger 51. Therefore, the air containing the moisture exhausted into the dehumidifying pipeline 16 is cooled and dehumidified. The air dehumidified in the dehumidifying pipe 16 passes through the lint collecting filter 17, passes through the blower pipe 18, is led to the rear of the water tank 3, flows into the heating pipe 19 provided on the back surface of the water tank 3, and is heated. It is heated by 20 and blown into the water tank 3 from the blower port 22. Since the air blown into the water tank 3 flows into the rotary drum 2 through the air holes 39 and the through holes 8 formed on the bottom surface of the rotary drum 2, moisture is taken away from the laundry by the dehumidified and heated air. Drying of all the laundry is promoted by stirring by the rotation of the drum 2, and the laundry is dried by repeating this air circulation for a predetermined time.

  As shown in FIG. 5, a plurality of vent holes 39 are formed on the circumference (corresponding to the air outlet 22 formed in the water tank 3) on the bottom surface (rear surface) of the rotating drum 2. Most of the hot air blown into 3 is fed into the rotary drum 2 from the vent 39. Since the air blowing port 22 is formed below the center of the rotating drum 2, the warm air is blown up from the lower side of the rotating drum 2 through the air vent 39, and thus the laundry to be stirred in the rotating drum 2. You can efficiently remove moisture from the laundry by touching a wide area. Moreover, the warm air blown from the air blowing port 22 easily flows into the flow path from the front opening of the water tank 3 located at the position facing the air blowing port 22 to the door body 9, and deprives the laundry of a large amount of water vapor. The hot air in a state containing the air reaches the door body 9. When hot air containing a large amount of water vapor hits the door body 9, the water vapor condenses due to the temperature difference between the hot air and the door body 9 facing the outside of the washing machine housing 6 and having a low temperature. Condensation is generated on the inner surface of 9. As a result, the temperature of the door body 9 is lowered by the condensation heat released when the water vapor condenses and the heat of vaporization when the condensation evaporates, and the temperature rise due to the hot air is suppressed.

  In the conventional configuration in which hot air is blown into the rotary drum 2 from the front side as in the conventional example shown in the background art, the door body 9 is exposed to hot air having a high dry temperature immediately after being blown to the rotary drum 2. Therefore, when the temperature of the door body 9 rises to such a degree that it cannot be touched by hand, and a drying course that finishes drying in a short time called a short course is selected, Since the air is blown, the temperature of the door body 9 may rise to 100 ° C., and if it is touched with bare hands, burns may occur. The laundry does not necessarily continue to dry until it is completely dried, and it is preferable to take it out in a dry state according to the user's intentions, and then use it to dry in the sun, or clothes to be ironed should be in a dry state. Therefore, it is configured so that the user can freely interrupt the drying process, such as how to take out during drying. When the door body 9 can be opened during drying as described above, if the door body 9 is heated to a high temperature as described above, an operation for freely opening the door body 9 cannot be performed. .

  When the air blowing structure for blowing air from the bottom side of the rotating drum 2 toward the front side is formed as in the configuration of the present embodiment, the door body 9 takes warm water from the laundry and contains a large amount of water vapor. Therefore, the door body 9 is not directly exposed to hot air having a high temperature immediately after the air is blown, and hot air containing water vapor is applied to the door body 9, so that condensation occurs on the door body 9 and the temperature rise is suppressed. Thus, the door body 9 can be freely opened during the drying process. Incidentally, when the normal course drying process is performed in the drum type washing and drying machine 1 according to the present embodiment, the temperature of the door body 9 can be suppressed to 55 ° C. or lower. Moreover, even when the short course which raised the temperature of the warm air which ventilates is selected, the temperature of the door body 9 can be suppressed to 70 degrees C or less.

  Further, as shown in FIG. 3, a temperature sensor 55 is disposed in the vicinity of the air blowing port 22 of the heating pipe 19 to detect the temperature of the hot air to be blown, and the temperature to be blown from the temperature detecting unit 54 to the control unit 41. When the temperature information of the wind is configured to be input and the temperature of the hot air to be blown becomes equal to or higher than the predetermined temperature, the control unit 41 controls the power supply to the heater 20 to be cut off. A state in which the temperature rises to such an extent that it cannot be touched with a hand can be more effectively suppressed.

  In the embodiment described above, the configuration in which the rotary drum 2 is inclined is shown. However, the same configuration can be made when the rotary drum 2 is arranged in the horizontal direction.

  As described above, according to the present invention, the hot air blown into the rotary drum in the drying process forms an air flow path that effectively takes moisture from the laundry, and at the same time, after the moisture is taken from the laundry. Since the water vapor contained in the warm air condenses on the door body to generate dew condensation, the temperature rise of the door body can be suppressed by releasing condensation heat and heat of vaporization. Therefore, it is possible to provide a drum-type washing and drying machine that can open the door body during the drying process and take out the laundry at the discretion of the user.

Sectional drawing which shows the principal part structure of the drum type washing-drying machine which concerns on embodiment. Sectional drawing which shows the structure of the drying function with which a drum type washing-drying machine same as the above is provided. The top view on the water tank back side which shows the structure in a heating pipe line. The block diagram which shows the structure of the control apparatus with which a drum type washing-drying machine same as the above is provided. The top view which shows the vent formed in the bottom face of a rotating drum.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum-type washing and drying machine 2 Rotating drum 3 Water tank 7 Drum drive motor 8 Through-hole 9 Door body 15 Blower fan (blower means)
16 Dehumidification pipeline 17 Waste thread filter (dust removal means)
18 Blower line 19 Heating line 20 Heater (heating means)
21 Exhaust port 22 Ventilation port 38 Dehumidifying means 39 Ventilation port

Claims (4)

A water tank formed in a substantially bottomed cylindrical shape in the housing is disposed with its opening facing the front side of the housing, and a bottomed cylindrical shape in which a large number of through holes are formed in the peripheral surface of the water tank A rotating drum that is housed in the drum and rotated by a drum drive motor is disposed, and a door body that opens into the rotating drum is provided at a position facing the water tank opening of the housing so as to be freely opened and closed. A drying air circulation path is provided for blowing air exhausted from the water tank through the air circulation path provided with dehumidifying means, air blowing means, and heating means into the water tank, and each step of washing, rinsing, dehydration and drying And a control means for controlling the operation of each part according to
The drum type washing and drying machine, wherein the air blowing port is provided at a position where a flow path of air blown into the water tank is formed through the rotating drum toward the front opening of the water tank. The drum-type washing and drying machine according to claim 1, wherein the blower opening is formed in a portion facing the front opening on the back of the water tank. The drum-type washing and drying machine according to claim 1 or 2, wherein the air blowing port is formed below the center of the rear surface of the water tank. The drum type washing and drying machine according to any one of claims 1 to 3, wherein the control means controls the superheating means based on temperature detection of air blown into the water tank.

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