JP2007289454A - Washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact heat pump device to effectively utilize the narrow inside of an outer frame case body. <P>SOLUTION: The washing and drying machine comprises an outer tub in a cylindrical shape provided inside the outer frame case body, a washing and drying tub in the cylindrical shape freely rotatably provided inside the outer tub for housing laundry, a drying air circulation path for returning drying air which dries clothes in the washing and drying tub and flows out to the washing and drying tub, and the heat pump device provided so as to be interposed in the drying air circulation path for taking away moisture in the drying air and heating it together. In the washing and drying machine, the heat pump device comprises a compressor placed inside a main body case, a heat radiator and a heat absorber, and the heat absorber placed on the lower side and the heat radiator placed on the upper side are arranged vertically in a line. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drum-type washing and drying machine equipped with a heat pump device.

  A washing / drying machine equipped with a heat pump device is described in Japanese Patent Application Laid-Open No. 64-32893 (Patent Document 1). The heat pump device of the washing and drying machine is composed of a compressor that compresses the refrigerant, a radiator that radiates the heat of the compressed refrigerant, an adjustment valve that depressurizes the pressure of the compressed refrigerant, It has a heat sink that takes heat away.

  This washing dryer dries while heating and dehumidifying the air for drying by operating the heat pump device in the drying process.

JP-A-64-32893

  Since this washing dryer dries while drying and dehumidifying the drying air in the drying process, the drying becomes faster.

  In this washer / dryer, since the heat pump device is installed on the lower side of the outer frame housing, a drying air circulation passage through the condensed water drainage passage and the heat pump device is required.

  For this reason, the inside of the outer frame casing becomes narrow, and the workability of assembly is reduced. Maintenance is also reduced.

  In view of the above problems, an object of the present invention is to make the heat pump device compact and to ease the narrowness in the outer frame housing.

  The present invention provides a cylindrical outer tub provided in an outer frame housing, a cylindrical laundry drying tub that is rotatably provided in the outer tub, and stores laundry, The drying air circulation path for returning the drying air flowing out after drying to the washing and drying tank, and the drying air circulation path are provided so as to combine the deprivation of moisture in the drying air and heating. In the washing / drying machine having a heat pump device to perform, the heat pump device has a compressor, a radiator, and a heat absorber that are installed in a main body case, and the heat absorber that is placed on the lower side and the heat absorber that is placed on the upper side. It is characterized by being arranged so that the above-mentioned heat sinks are aligned vertically.

  According to the present invention, since the heat pump device has become compact, the narrowness in the outer frame housing can be reduced.

  Embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the drum-type washing and drying machine has a bottomed cylindrical outer tub 2 placed inside an outer frame housing 1. The outer tub 2 is supported from below by a plurality of suspensions 3 on the rear side from the center. Further, the outer tub 2 is supported by being suspended from its upper portion by a pulling spring 4.

  The suspension 3 supports the entire weight including the outer tub 2, has a strong elastic support structure, and is fixed to the outer frame base 20 of the outer frame housing 1. In particular, a damping mechanism or the like is provided for absorbing strong vertical vibration of the outer tub 2 that occurs during the dehydration operation and preventing abnormal vibration of the outer tub 2 that occurs when dehydration is started.

  The attachment position of the suspension 3 is provided at a substantially center of gravity of the outer tub 2. Since the outer tub 2 is provided so as to incline so that the rear end side is downward, the height of the suspension 3 that positions the suspension 3 on the rear side is lowered. The stroke of the suspension 3 is reduced.

  For this reason, in order to maintain the damping function of the suspension, it is more desirable that the mounting position of the suspension 3 is located substantially on the center side of the outer tub 2 than the rear position.

  Further, the pulling spring 4 supported by hanging from the upper part of the outer tub 2 is provided to support the falling of the outer tub 2 and to prevent vertical / horizontal vibration during dehydration.

  A water supply electromagnetic valve 6 and a detergent charging case 8 are provided inside the upper side of the outer frame housing 1. The detergent charging case 8 is connected to the water supply electromagnetic valve 6 through a water injection hose 7. A water supply hose 5 is connected to the water supply electromagnetic valve 6. The tip of the water supply hose 5 is connected to a tap (not shown).

  When washing is too easy, the water supply electromagnetic valve 6 is opened, and water necessary for washing and washing is supplied from the water injection hose 7 to the detergent charging case 8.

  A detergent necessary for washing is put into the detergent charging case 8. Further, at the time of rinsing, a softening finishing agent for improving the finish of the laundry is put into the case portion for storing the finishing agent provided in the detergent charging case 8 and automatically put into the outer tub 2 when necessary.

  That is, at the time of washing, the detergent is dissolved in the detergent charging case 8 by the water supplied from the water injection hose 7, flows through the flexible hose 10, and is charged into the inside from the upper part of the outer tub 2.

  The washing / drying tank 11 is rotatably installed in the outer tank 2. The washing / drying tank 11 having a bottomed cylindrical shape provided with an inlet on the front side is arranged so that the front end faces the front side of the outer frame housing 1 and the rear end faces the rear side of the outer frame housing 1. .

  The outer tub 2 in which the washing / drying tub 11 is placed is also arranged so as to face the front side of the outer frame housing 1 and the rear end thereof to the rear side of the outer frame housing 1.

  The outer tub 2 and the washing / drying tub 11 are placed so that their cylindrical axes are concentric, and the loading port 11a of the washing / drying tub 11 and the loading port 11b of the outer tub 2 are on the front side of the outer frame housing 1. It arrange | positions so that the insertion port 11c provided in may be faced.

  The outer tub 2 and the washing / drying tub 11 are disposed so as to be inclined so that the front end side where the charging port is provided is up and the rear end side is down. This inclination angle (angle of the axial center line with respect to the horizontal line) θ is 15 degrees. Although an inclination angle of about 15 degrees is desirable for taking out the laundry, the inclination angle θ can be selected within a range of about (5 to 30) degrees.

  The outer frame housing 1 is provided with an outer lid 12 that opens and closes the insertion port 11c. The outer lid 12 is opened and closed when the laundry is taken in and out of the washing / drying tank 11.

  The bellows 21 is attached in a watertight manner to the mouth edge of the inlet 11 c of the outer frame housing 1 and the inner edge of the inlet 11 b of the outer tub 2. The water-tightness between the outer frame casing 1 and the outer tub 2 is maintained by the bellows 21 made of this rubber (elastic body). Since the inner side of the outer lid 12 is in close contact with the bellows 21, no water leaks from the inlet 11c of the outer frame housing 1 to the outside.

  The washing / drying tank 11 has a balancer 13. The inner peripheral side of the balancer 13 is the aforementioned inlet 11a. The balancer 13 reduces vibration during dehydration. The washing / drying tank 11 has a plurality of dewatering holes 14 in the cylindrical portion. At the time of dehydration, water contained in the laundry is dehydrated into the outer tub 2 by centrifugal force through the dehydration hole 14.

  A plurality of (three) lifters 16 are provided on the inner periphery of the cylindrical portion of the washing / drying tank 11. The lifter 16 extends along the direction of the axis (rotation axis). The height of the lifter 16 is generally the same height over the longitudinal direction.

  In order to improve the movement of the laundry located on the back side, the lifter 16 can be substantially horizontal (horizontal when it is located on the lower side) with respect to the rotational axis of the washing / drying tub 11. For example, when there are three lifters 16, the lifters 16 are arranged at equal intervals of 120 degrees.

  The DC brushless motor 19 is attached and fixed to the rear outer surface of the outer tub 2. The DC brushless motor 19 is a drive source that rotationally drives the washing / drying tub 11.

  The washing / drying tank 11 has a flange 17 at the rear end which is the bottom side of the cylindrical portion. A main shaft 18 provided on the flange 17 is coupled to the rotor side of the DC brushless motor 19. Thus, the washing / drying tub 11 is rotatably supported by the outer tub 2 via the DC brushless motor 19 as a driving source.

  The drainage hose 23 of the drainage channel is provided so as to communicate with the rear lower part of the outer tub 2. In this drainage channel, two drainage valves 22 are provided. By opening the drain electromagnetic 22, the washing water and the rinsing water collected in the outer tub 2 are drained outside the machine through the drain hose 23.

  The drainage hose 23 of the drainage channel penetrates the outer frame base 20 and the downstream end is inserted into the drainage hole of the house.

  Next, the outline of the heat pump device and the drying air circulation path will be described with reference to FIG.

  First, the heat pump device 40 shown in FIG. 1 includes the compressor 41, the heat absorber 42, the radiator 43, the pressure reducing adjustment valve 44, the communication pipe 45 through which the refrigerant flows, and the like shown in FIG.

  The heat pump device 40 is disposed below the front end of the outer tub 2 in the outer frame housing 1.

  In the outer frame housing 1, the space below the front end of the outer tub 2 is large. This is because the outer tub 2 and the washing / drying tub 11 are arranged so as to be inclined so that the front end side where the charging port is provided is upward, compared with the case where the outer tub 2 is arranged horizontally. The space below the front end increases. The heat pump device 40 is placed using the space below the front end of the outer tank 2 that has become larger.

  Thereby, it is not necessary to increase the depth of the outer frame casing as in the conventional case, and a compact washing and drying machine can be provided. Since it is a washing machine with a compact size, the installation area is reduced.

  As a drive motor for the compressor, a linear system employing a DC brushless motor using a neodymium magnet (rare earth magnet) may be used.

  Thereby, the whole size of the heat pump device can be made compact. In addition, the linear system was able to provide an efficient compressor with low noise and vibration.

  The dry air inlet 54 of the heat pump device 40 is communicated with a blower fan unit 80 provided on the rear side of the outer tub 1 via a suction circulation pipe 81 (drying air circulation path). The suction circulation pipe 81 is provided with a bellows hose 82 on the inlet pipe 54 side. The bellows hose 82 absorbs vibration from the outer tank 2 side and does not transmit it to the tote pump device 40.

  The blower fan unit 80 has a blower fan 83 inside. By the blower fan 83, the drying air in the outer tub 2 is blown to the heat pump device 40 through the suction circulation pipe 81 (drying air circulation path).

  The dry air outlet 55 of the heat pump device 40 communicates with the front end side of the outer tub 2 via a discharge circulation pipe 84 (drying air circulation path). The discharge circulation pipe 84 is provided with a bellows hose 85 on the dry air outlet 55 side. This bellows hose 85 absorbs the vibration from the outer tub 2 side to the vibration device 40 and does not require a heat pump.

  The drying air that has been subjected to heat exchange by the heat pump device 40 flows through the discharge circulation pipe 84 and returns to the outer tub 2.

  That is, the drying air flowing in the washing / drying tub 11 absorbs the moisture of the laundry 9, flows from the rear end side of the outer tub 2 through the suction circulation pipe 81 (drying air circulation path), and flows into the heat pump device 40. To do.

  Here, the high-temperature drying air containing moisture is cooled in contact with the heat absorber 42 of the heat pump device 40, and the moisture is taken as condensed water, so that it is changed to dry air.

  After that, the drying air that has reached a high temperature and is in contact with the radiator 43 flows into the washing / drying tank 11 through the discharge circulation pipe 84 and the outer tub 2, and absorbs moisture from the laundry 9. The drying of the laundry 9 is performed by repeating the circulation of the drying air.

  The heat absorber 42 includes a heat absorption tube 60 that flows around the refrigerant, and a number of heat absorption fins 61 that transmit heat of the heat absorption tube 60 to the drying air. The large number of heat absorbing fins 61 are arranged so as to be stacked with a gap therebetween.

  The radiator 43 includes a heat radiating pipe 70 that flows so that the refrigerant circulates, and a large number of heat radiating fins 71 that transmit heat of the heat radiating pipe 70 to the drying air. A large number of heat radiation fins 71 are arranged so as to be stacked with gaps therebetween.

  The heat pump device 40 has a condensed water drainage port 95 to which the condensed water drainage hose 29 is connected. The condensed water drainage hose 29 communicates with the drainage hose 23 of the drainage channel. The condensed water generated in the heat absorber 42 flows through the condensed water drainage hose 29 and the drainage hose 23 of the drainage channel and is drained to the outside.

  The heat pump apparatus which is the main part of the present invention will be described in more detail with reference to FIG.

  The heat pump device 40 includes a compressor 41, a radiator 43, and a heat absorber 42 installed in the main body case 90. The heat absorber 42 placed on the lower side and the heat radiator 43 placed on the upper side are arranged so as to be aligned vertically.

  Since the heat absorber 42 and the heat radiator 43 are arranged side by side in the vertical direction, the heat pump device 40 is more compact than that in which the heat absorber 42 and the heat radiator 43 are arranged in a stepped manner. For this reason, the narrowness of the outer frame housing 1 is relaxed, and the workability of the assembly is improved.

  The heat pump device 40 has a water storage unit 91 below the heat absorber 42. This water reservoir 91 is recessed in the center. A condensate drainage port 95 is provided in this recess. Since the heat absorber 42 is on the lower side of the radiator 43, the condensed water generated in the heat absorber 42 flows down to the water storage portion 91 immediately below.

  Unlike what a heat absorber arrange | positions on a heat radiator, it does not arise that condensed water drops and touches a heat radiator. Since the radiator is not cooled by the condensed water, the drying air is well heated, and the drying performance of the clothing is improved accordingly.

  Moreover, in order to prevent dripping of condensed water to the radiator, it is not necessary to interpose a partition plate between the heat absorber and the radiator, and the heat pump device 40 can be made compact. Since the drying air that has passed through the heat absorber flows to the radiator side without detouring, the flow of the drying air is also improved.

  The lint collecting means 92 that collects lint contained in the drying air is provided in the heat pump device 40. The lint collecting means 92 is provided adjacent to the side of the heat absorber 42. The lint collecting means 92 is formed by a bag-like net. The mouth of the net is placed so as to face the outlet 55 for dry air.

  As shown in FIG. 1, the heat pump device 40 is arranged so that the lint collecting means 92 comes to the front side of the outer frame housing 1. The lint collecting means 92 is detachably provided on the heat pump device 40 so that it can be removed.

  The lint collecting means 92 has a handle 93 on the front side as shown in FIG. With this handle 93, the lint collecting means 92 is attached and detached.

  Since the lint collecting means 92 is disposed so as to come to the front side of the outer frame casing 1 and is detachably provided in the heat pump device 40, maintenance such as cleaning is easily performed.

  The drying air that flows to the drying air circulation path (discharge circulation pipe 84 / suction circulation pipe 81) flows from the drying air inlet 54 to the lint collecting means 92. The drying air from which lint has been removed flows from the drying air outlet 55 to the drying air circulation path (discharge circulation pipe 84 / suction circulation pipe 81) via the heat absorber 42 and the radiator 43, and the washing drying tank. It flows to 11. The laundry 9 is dried by the circulation of the drying air.

  Since the lint is removed from the drying air flowing through the heat absorber 42 and the radiator 43, the lint does not adhere to the heat absorber 42 and the radiator 43, and heat exchange is performed well.

  The drying air that is circulated is cooled by the heat absorber 42 and warmed by the radiator 43. The drying air heated by the radiator 43 flows to the drying air outlet 55 provided on the upper side of the main body case 90, so that the flow matches the natural convection, and the drying air is smoothly circulated.

  Next, the operation process of the drum type washing / drying machine will be described with reference to FIG.

  In this operation process, the dirt adhering to the laundry 9 is removed, the detergent is rinsed off by rinsing, and the water contained in the laundry 9 is dehydrated from the dewatering hole 14 by centrifugal force by the rotation of the washing drying tank 11. It is a block diagram which shows the general automatic washing course which performs draining those water | moisture contents automatically.

  First, water supply 500 is performed by operating the water supply electromagnetic valve 6. Water is supplied up to a water supply amount 30 shown in FIG.

  In the washing 501, when water necessary for washing is supplied into the outer tub 2, the DC brushless motor 19 rotates to drive and rotate the washing / drying tub 11.

  At this time, the rotation speed of the washing / drying tub 11 is about 40 to 50 rotations per minute, and the right and left rotations are performed for several minutes between pauses, and the laundry is being lifted up by the lifter 16 in the washing / drying tub 11. Washed by tapping. During this washing operation, the washing water is heated by the heat radiation to the radiator 43 and the washing is promoted.

  When the washing 501 is completed, the washing water containing dirt flowing out from the laundry is transferred to the drainage 502 for discharging the washing water to the outside of the washing / drying machine.

  After the drainage is completed, the process proceeds to dehydration 503 for dehydrating the detergent contained in the laundry. In the dehydration 503, the water contained in the laundry is dehydrated from the plurality of dehydration holes 14 provided on the inner wall of the laundry drying tub 11 by centrifugal force by rotating the laundry drying tub 11 at high speed.

  When the dehydration 503 is completed, the detergent contained in the laundry is rinsed and the process proceeds to the rinse 505.

  Before entering the operation of the rinse 505, necessary fresh water is supplied into the outer tub 2 in the water supply 504 for supplying fresh water in the same manner as the washing 501.

  In general, about 30 L of fresh water necessary for rinsing is supplied as in washing.

  When a specified amount of fresh water is supplied, the process automatically proceeds to the rinse 505, and the washing / drying tub 11 rotates while being reversed at a low speed in the same manner as the washing 501 to remove the detergent contained in the laundry.

  Drainage 506 after the completion of rinsing 506-Dehydration 507-Rinse (2) 508-Drainage 509 is performed in the same manner as described above, and finally, the process proceeds to final dehydration 510 where water contained in the laundry is sufficiently dehydrated.

  The dehydration time of the final dehydration 510 is generally 5 minutes or longer, and the laundry drying tank 11 is rotated at a high speed to remove moisture from the laundry. The dehydration rate at this time reaches 60 to 65%.

  In the case of a drum type washing / drying machine in which a heat pump device is provided in the drum type washing / drying machine and automatically proceeds from washing to drying, the process automatically proceeds to the drying step 511 after the final dehydration 510 is completed. Transition.

  In the drying step 511, after the moisture of the laundry is sufficiently removed in the dehydration step, the laundry drying tank 11 is moved through the washing pump 11 while blowing the warm air drying air heat-exchanged by the radiator 43 by the heat pump device 40. Inverted or rotated in one direction at a speed of about 50 revolutions per minute to remove moisture from the laundry and dry it.

  In the drying step 511, the laundry is dried. In the washing / drying tank 11, the moisture of the laundry is absorbed by the drying air, and the moisture is taken as condensed water from the drying air sucked by the blower fan 83 and sent to the heat absorber 42.

  The dewed condensed water (condensed water) is drained through the condensate drain hose 29 when the drain solenoid valve 22 is opened.

  The dehumidified drying air flows through the discharge circulation pipe 84 (drying air circulation path), and is sent into the outer tub 2 and further into the washing / drying tub 11.

  The drying air heats the washing / drying tub 11 and the outer tub 2 to promote the drying of the laundry. After completion of drying, the process automatically proceeds to end 512 to end the washing / drying course.

  Next, driving of the DC brushless inverter motor 19 will be described with reference to the circuit block diagram of FIG.

  The power source 600 is connected to AC 100 V 50/60 Hz, and first the power switch 601 is turned on.

  The energized power source is converted from an AC power source to a high-voltage DC power source by a rectifier circuit 603 that is a driving power source of the DC brushless motor 19 through a filter circuit 602 that cuts power line noise and aerial radio noise. This is supplied to a DC inverter drive circuit 604 that is a motor drive circuit.

  The DC inverter drive circuit 604 is energized by an IGPT element circuit that supplies power at an electrical angle of 120 degrees or 180 degrees according to a control command of the microcomputer 609 to each phase coil of the DC brushless motor U-phase 605, V-phase 607, and W-phase 608. Operation is controlled.

  The rotation control of the DC brushless motor 19 is based on the rotation of a rotor (not shown) having a plurality of magnets, and a signal from an IC Hall element 606 fixed to the outer periphery of the DC brushless motor 19 is sent to the microcomputer 609. The rotational speed of the washing / drying tub 11 is adjusted by controlling the rotational speed of the intake.

  In addition, fresh water necessary for rinsing to remove dirt and detergent adhering to the laundry during washing is energized and supplied to the water supply electromagnetic valve 6 connected to the drive circuit unit 610 according to a command from the microcomputer 609. During drainage, the drain electromagnetic valve 22 is opened to drain dirty water outside the washing / drying machine.

  Further, during drying, operation control of the compressor 41 of the heat pump device, the pressure reducing adjustment valve 44, and the blower fan 83 is performed. The condensed water generated by the heat pump device is drained out of the washing / drying machine via the water storage unit 91, the condensed water drainage hose 29, the drainage hose 23, and the drainage electromagnetic valve.

The longitudinal cross-sectional view of the washing-drying machine is related with the Example of this invention. It is an internal enlarged view of the washing-drying machine in the drying operation process according to the embodiment of the present invention. 1 is a perspective view of a heat pump apparatus according to an embodiment of the present invention, partially broken away. 1 is a circuit block diagram according to an embodiment of the present invention. FIG. It is a figure which concerns on the Example of this invention, and shows the driving | operation process of a washing dryer.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Outer frame housing | casing, 2 ... Cylindrical outer tank, 11 ... Cylindrical washing drying tank, 84 ... Discharge circulation pipe (drying air circulation path), 81 ... Suction circulation pipe (drying air circulation path), DESCRIPTION OF SYMBOLS 40 ... Heat pump apparatus, 90 ... Main body case, 41 ... Compressor, 43 ... Radiator, 42 ... Heat absorber.

Claims (4)

A cylindrical outer tub provided in the outer frame casing, a cylindrical laundry drying tub that is rotatably provided in the outer tub and stores laundry, and clothes are dried in the laundry drying tub. A drying air circulation path for returning the flowing drying air to the washing / drying tank, and a heat pump device provided so as to be interposed in the drying air circulation path and performing both the removal and heating of moisture in the drying air; In a washing and drying machine having
The heat pump device includes a compressor installed in the main body case, a radiator, and a heat absorber.
The washing / drying machine, wherein the heat absorber placed on the lower side and the heat radiator placed on the upper side are arranged so as to be aligned vertically. The washing and drying machine according to claim 1,
The said heat pump apparatus has a water storage part under the said heat absorber, The washing-drying machine characterized by the above-mentioned. In the washing and drying machine according to claim 2,
The heat pump device has detachable lint collecting means provided adjacent to a side portion of the heat absorber,
A washer-dryer arranged such that the lint collecting means is on the front side of the outer frame casing. In the washing and drying machine according to claim 3,
The heat pump device has an inlet for dry air that flows the drying air flowing in the drying air circulation path into the lint collecting means, and an inlet for the dry air, and the lint collecting means, the heat absorber, A washing / drying machine comprising: a drying air outlet that flows out to the drying air circulation path via the radiator; and a condensed water outlet that allows condensed water to flow out of the water reservoir.

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