JP2008246230A - Washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum laundry machine or a drum washing and drying machine which is easy to take the laundry in and out, has good detergency, does not damage the laundry much, is compact, and does not vibrate much and/or has a low noise level. <P>SOLUTION: An outer tub which is prepared in an outer frame chassis, is cylindrical, and collects washing water, a cylindrical washing drum tub which is prepared in the outer tub rotatably and holds the laundry and the washing drum tub are provided. It is characterized in that the diameter D of the washing drum tub and the anteroposterior length L of the washing drum tub are (D/2)/L=0.9-1.1 in a drum laundry machine or a drum washing and drying machine which installs the rotation axis center line of the washing drum tub obliquely so that an input opening which is prepared on the anterior end side of the washing drum tub is obliquely upward. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drum-type washing machine or a washing / drying machine in which a rotation axis of a washing drum tub is placed sideways.

  A drum type washing machine is described in Japanese Patent Application Laid-Open No. 2003-79995 (Patent Document 1). This drum-type washing machine has a configuration in which the rotation axis of the washing drum tub is obliquely installed so that the charging port is obliquely upward, and the outer tub in which the washing drum tub is placed is supported by the suspension in a vibration-proof manner.

JP-A-64-32893

  The drum-type washing machine or the washing and drying machine makes it easy to put the laundry into and out of the laundry drum by inclining the rotation axis of the washing drum tub so that the laundry inlet is directed upward.

  However, when the inclination angle of the inclination is increased, the laundry can be easily put in and taken out, but the washing power of the laundry is reduced.

  Further, if L is larger than d in comparison with the radius d and the depth L of the washing drum, the mechanical force due to tapping is reduced, and the cleaning power is reduced. At the same time, the depth dimension of the outer frame casing of the washing machine increases, and the thickness cannot be reduced.

  On the other hand, when d is larger than L, the mechanical force by tapping is increased and the damage of the laundry is increased. At the same time, the width and height of the outer frame casing increase, and the size reduction cannot be achieved. In addition, vibration and noise increase due to an increase in centrifugal force during dehydration.

In view of the above problems, the present invention provides a drum type washing machine or a drum type washing and drying machine that is easy to put in and out of laundry, has good cleaning power, has little damage to the laundry, is compact, and has little vibration and noise. For the purpose.

  The present invention provides a cylindrical outer tub for storing washing water and rinsing water provided in an outer frame housing, and a cylindrical laundry drum tub rotatably provided in the outer tub for storing laundry. A drum-type washing machine or a drum-type washing machine including the washing drum tub, wherein the rotation axis of the washing drum tub is obliquely installed so that a charging port provided on a front end side of the washing drum tub is obliquely upward In the washing / drying machine, a diameter D of the washing drum tub and a length L in the front-rear direction of the washing drum tub are (D / 2) /L=0.9 to 1.1.

  According to the present invention, it is possible to provide a drum-type washing machine or a drum-type washing / drying machine that is easy to put in and out the laundry, has a good detergency, has little damage to the laundry, is compact, and has little vibration and noise.

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

  Although the examples given below are drum-type washing machines, the present invention can also be applied to drum-type washing and drying machines. If the drying function unit is removed from the drum type washing and drying machine, the drum type washing machine is obtained. In FIG. 1 and FIG. 2, the drying function unit is omitted.

  First, the outline of the drum type washing and drying machine will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the drum-type washing and drying machine has a bottomed cylindrical outer tub 2 placed inside an outer frame housing 1.

  The outer dimensions of the outer frame housing 1 are a height H of 1100 mm, a front width W of 650 mm, and a depth D of 610 mm. This external dimension is a case where the washing capacity is 8 to 10 kg and the dry capacity is 6 to 8 kg. As the washing capacity and drying capacity change, the dimensions of the washing drum tank also change, so the outer dimensions change.

  The outer tub 2 is supported from below by a plurality of suspensions 3 on the rear side from the center. The outer tub 2 is suspended and supported by a pulling spring 4 from the upper part thereof.

  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 position 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 drum tub 11 is rotatably installed in the outer tub 2. The washing drum tub 11 having a bottomed cylindrical shape provided with a front opening 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 drum tub 11 is placed is also arranged to face the front side of the outer frame casing 1 and the rear end to the rear side of the outer frame casing 1.

  The outer tub 2 and the washing drum tub 11 are placed so that their cylindrical axes are concentric, and the charging port 11 a of the washing drum tub 11 and the charging port 11 b 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 drum 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. When the laundry is put in and out of the laundry drum tub 11, the outer lid 12 is opened and closed.

  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 drum tub 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 drum tub 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.

  The cylindrical portion of the washing drum tub 11 is provided with a plurality of (three) lifters 16 on the inner periphery. 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 with respect to the rotational axis of the laundry drum tub 11 (horizontal when it is located on the lower side). 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 drum tub 11.

  The washing drum tub 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 connected to a DC brushless motor rotor side of 19. Thus, the washing drum tub 11 is rotatably supported by the outer tub 2 via the DC brushless motor 19 as a drive 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, a drainage valve 22 is provided. By opening the drain electromagnetic valve 22, the washing water and the rinsing water 23 accumulated 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.

  FIG. 3 shows an operation process of the drum type washing and drying machine.

  In this operation process, the dirt adhering to the laundry 9 is removed, and the detergent is rinsed and the lint is removed by rinsing. Further, an automatic washing operation process in which the washing water contained in the laundry 9 is automatically dewatered and drained from the dewatering hole 14 by the rotation of the washing drum tank 11 by the centrifugal force is shown.

  First, the water supply electromagnetic valve 6 is turned on and water supply 300 is performed. Water is supplied up to about 20 liters. The total water supply is usually around 25 liters.

  The detergent set in the detergent case 8 flows into the outside of the washing drum tank 11 together with the water supply, and the detergent is dissolved by the rotation of the washing drum tank 11. In the washing 301, when washing water necessary for washing is supplied, the inverter motor 19 rotates to rotate the washing drum tub 11.

  The rotational speed of the washing drum tank 11 at this time is 40 to 60 revolutions per minute, and the larger the outer shape of the washing drum tank 11, the lower the number of revolutions. While being scooped up by 16, it is washed by tapping.

  When the washing 301 is completed, the washing water containing dirt flowing out from the laundry 9 is transferred to the drainage 302 in the step of turning on the drainage valve 22 and draining it out of the machine by the drainage hose 23.

  After the drainage 302 is completed, the process proceeds to the dehydration 303 for dehydrating the detergent contained in the laundry 9. In the dehydration 303, the washing drum tub 11 is rotated at a high speed, and the washing water contained in the laundry 9 is dehydrated through the dewatering hole 14 opened in the washing drum tub 11 by centrifugal force.

  When the dehydration 303 is completed, the detergent contained in the laundry 9 is rinsed and the process proceeds to the rinse (1) 304. At this time, the water supply 305 is performed, but the water supply level is set higher than that of the washing 301 and the rinse (1) 304 is performed.

When rinsing (1) 304 is completed, drainage 306 and dehydration 307 are performed, and water is supplied in the same manner as water supply 305 at the time of rinsing (1), and rinsing (2) 308 is performed.
The amount of water supply at this time is equal to that at the time of washing or increased by the time of rinsing (1), so that the amount of water supply is reduced. When rinsing (2) 308 is completed, drainage 309 and final dehydration 310 are performed, and the washing operation process ends.

  If the drying process is set, the drying process 311 is continuously executed after the final dehydration 310 is completed, and the process reaches the end 312.

  FIG. 4 shows a block of control means for controlling the processes from washing, rinsing, dewatering and drying.

  The control means includes the microcomputer 61 as a main part.

  The microcomputer 61 includes a timer 63 as a clock pulse generating means, a central processing unit (CPU) 62, a memory 64, an input port 66, an output port 65, and the like. The central processing unit 62 includes a calculation unit 62a and a control unit 62b.

  The washing machine is driven by driving the central processing unit 62, the timer 63, and the memory 64 in the microcomputer 61 based on conditions set by exchanging data through the data bus.

  The central processing unit 62 is basically a control command fetching, decoding, and execution command. Specifically, the central processing unit 62 is controlled by arithmetic operation or reading of memory-designated address contents, input / output of a designated address to the input / output device Controls fully automatic courses and annual setting programs.

  The memory 64 is provided with two types of RAM 64a having a function of reading and writing program data and a ROM 64b having only a read-only function. The RAM 64a mainly stores and sets data necessary for washing operation conditions. It is used as a work area when creating a programmed program.

  The ROM 64b is used when a predetermined program or fixed data is entered and the same processing is performed at any time. The input port 66 and the output port 65 are circuits that mediate when data is transferred between the central processing unit 62, the input circuit 70, and the output circuit 71.

  On the input / output circuit unit 70 side, information from various sensors, a power switch, and the like built in the washing machine are connected. A power supply necessary for operating the washing machine is supplied from the power switch 72.

  By pressing the power switch 72, the water supply electromagnetic valve 6 already described with reference to FIG. 1 is opened, and water necessary for washing and rinsing is supplied into the washing machine.

  The amount of water required for washing and rinsing is appropriate by receiving information from the water level sensor 73 incorporated in the washing machine, processing the information in the central processing unit 62, and determining whether the amount of water is appropriate. For example, the process proceeds to the next process according to the process diagram shown in FIG.

  The rotation speed of the DC brushless motor 19 such as washing, dehydration, and rinsing is transmitted to the central processing unit 62 by transmitting information from the IC Hall element 74 provided in the vicinity of the DC brushless motor 19 to appropriately control the rotation of the DC brushless motor 19. I do.

  In addition, on the input side, a lid opening / closing sensor 75 for detecting the opening / closing state of the lid, a fully automatic course selection key 76 for setting a fully automatic course, a manual setting key 77, a cloth amount sensor 78 for detecting the amount of the laundry 9, etc. Is provided.

  On the output side, a DC brushless motor 19, a water supply electromagnetic valve 6, a drainage electromagnetic valve 22, a lid lock solenoid 79, an end buzzer 80 for informing the end, and the like are provided.

  The washing machine automatically performs operations from washing to rinsing and dehydration while exchanging information via the data bus from the input / output device side with the microcomputer 61.

  The specific volume will be described with reference to FIGS.

  The specific volume is a ratio between the internal volume V liter of the washing drum tub 11 and the dry rated capacity kg.

  The internal volume V of the washing drum tub 11 is obtained from the diameter DΦ and the depth L. The range of the specific volume of good drying to be dried in the washing drum tub 11 is 9 (L / kg) to 13 (L / kg).

  When it becomes 9 (L / kg) or less, the laundry becomes full in the washing drum tub, and many wrinkles are generated in the dried laundry 9, resulting in poor finish.

  When it is 13 (L / kg) or more, the dry finish is improved, but the internal volume of the washing drum tank 11 is increased. Since the size of the outer frame housing 1 is increased, the installation area is increased, and the number of demands is reduced due to housing circumstances.

  By making the specific volume within the range of 9 (L / kg) to 13 (L / kg), a compact and large capacity can be achieved.

  As shown in FIG. 6, at 9 (L / kg), when the rated capacity is 8 kg, the internal volume of the washing drum tub 11 is about 72 L. At 13 (L / kg), the internal volume is about 104L. It is necessary to design the internal volume of the washing drum tank 11 while keeping the hatched area.

  The dry cloth mass, the compress mass, and the shaft torque will be described with reference to FIGS.

  A of FIG. 7 represents the relationship between the dry cloth mass and the wet mass in the towel-type laundry 9 having a high moisture content. B represents a cotton-based laundry 9.

  In the case of the towel cloth system (A), the mass of the poultice is about 38 kg with respect to the mass of the dry cloth of 8 kg. It becomes 4.75 times in weight ratio and contains about 30 L of water.

  In the case of the cotton fabric system (B), the mass of the compress becomes about 30 kg with respect to the mass of the dry cloth of 8 kg. The weight ratio will be 3.75 times, and will contain about 22 L of water.

  Thus, in washing and rinsing, the washing drum tub rotates while carrying heavy laundry containing moisture, so that a large shaft torque is generated on the main shaft 18 as shown in FIG.

  Incidentally, the case where the water | moisture content of the laundry was removed by dehydration is described. When 50% of a towel cloth with a mass of 8 kg is dehydrated, the mass after dehydration is 16 kg, and the moisture contained in the laundry 9 is 8 L. In the 50% dehydration of the cotton fabric system, the moisture contained in the laundry 9 is 8 L after dehydration.

  Thus, a large shaft torque is applied to the main shaft 18 of the washing drum tub 11. Particularly during dehydration, unbalanced vibration noise is generated due to a large eccentric load, and it is necessary to take measures to suppress it.

  The inclination and washing of the washing drum tub will be described with reference to FIGS.

The drum-type washing / drying machine performs washing by tapping and washing the laundry 9 by the lifter 16 by the rotation of the washing drum tank 11 and dropping it onto the inner bottom of the washing drum tank 11.
The impact of this tapping wash that falls is that the inclination angle θ shown in FIG. 9 is 0 °. When the inclination angle θ is 90 °, the impact of tapping is minimized.

  FIG. 10 is a graph showing the relationship between the inclination angle θ of the washing drum tank 11 and the cleaning power index.

  The cleaning power index is 1 when the inclination angle θ is 0 °. The detergency index decreases as the inclination angle θ increases. Assuming that the standard washing machine designated by JIS is 1, generally, if the detergency index is 0.8 or more, it is accepted as a washing machine that removes dirt on the laundry 9.

  The inclination angle θ when the detergency index is 0.8 is 20 ° to 25 °. The detergency index for obtaining satisfactory detergency is 0.9 or more. The inclination angle θ is about 15 ° or less. The tilt angle and shaft torque will be described with reference to the graph of FIG.

  The washing drum tank 11 used here has a diameter DΦ of 600 mm and a depth L of 300 mm. The laundry is toweled and the axial torque (kg-cm) acting on the main shaft 18 when the laundry drum tub 11 is rotated in a state where the laundry contains about 4.6 times the moisture relative to the dry cloth mass. Is represented by a graph.

  The shaft torque (kg-cm) becomes maximum when the inclination angle θ is 0 ° and the washing load is 5 kg. When the washing load amount is 5 kg or less, the load torque is reduced, so that the shaft torque (kg-cm) is reduced.

When the laundry load amount is 5 kg or more, the load load increases, but as the laundry amount 9 increases, the laundry 9 is almost uniformly dispersed in the laundry drum tub 11. Since this dispersion effect has a great influence, the shaft torque (kg-cm) decreases when the washing load amount is 5 kg or more. For this reason, when the inclination angle θ increases, the shaft torque (kgf-cm) decreases. In addition, the cleaning effect is reduced. At 90 degrees, the shaft torque is minimized. The output of the DC brushless motor 19 that drives the washing drum tub can be reduced by setting an inclination angle with a small axial torque (kg-cm) as much as possible while maintaining the washing performance.

  The relationship between the ease in and out of the laundry 9 and the inclination angle will be described with reference to FIG.

  FIG. 12 is a graph in which the inclination angle θ and the ease of putting in and out the laundry are evaluated by a five-step sensory test.

  When the evaluation value is high, it is easy to put in and out, and when the evaluation value is low, it is difficult to put in and out. From this sensory test, it can be seen that as the inclination angle θ increases, the degree of satisfaction with respect to the loadability of the laundry increases.

  When this evaluation value, the above-described washing index, and shaft torque are comprehensively examined, the performance as a washing machine can be satisfied when the inclination angle θ is in the range of 10 ° to 20 °.

  The thinning of the washing drum tub (reduction in the depth length) and the reduction in the amount of water will be described with reference to FIGS.

  In this washing drum tub, the inclination angle θ was set to 10 ° to 20 °.

  In order to reduce the depth Dmm in the outer dimensions of the outer frame housing 1 shown in FIG. 2 of the drum type washing and drying machine, it is necessary to reduce the depth length Lmm of the washing drum tank 11.

  FIG. 13 shows the washing drum tub 11 and the outer tub 2 before thinning, and FIG.

  In order to reduce the depth Lmm of the washing drum tank 11 to L1 mm and maintain the specific volume of the washing drum tank 11 at 9 to 13 (L / kg), the diameter DΦ can be set to D1Φ.

  The front wash water level H is the same, but the depth L1 is shortened, so that the amount of water 30 for washing and rinsing can be reduced. The thinning of the washing drum tank 11 also has the effect of saving water.

  The compact large capacity will be described with reference to FIG.

  As described above, when the rated capacity of the laundry 9 is 8 kg and the specific volume is 9 to 13 (L / kg), the internal volume V liter of the washing drum tank is about 72 liters to 104 liters.

  When it is within this range, the relationship between the diameter and depth of the washing drum tub 11 is as follows.

  When the diameter D1Φ is 540 mm, the depth L is 315 mm.

  When the diameter D1Φ is 660 mm, the depth L is 205 mm.

  If the depth L is 315 mm, the outer casing 1 cannot be thinned. When the diameter D1Φ is 660 mm, the depth L is 205 mm and the thickness is reduced. However, the width (W) of the main body housing 1 increases as the diameter increases. For this reason, the installation property to a house worsens.

  Therefore, in order to achieve a compact and large capacity, when the specific capacity is about 9 to 13 (kg) and the rated capacity is 8 kg, 80 to 88 (L) is desirable. From this result, it is desirable that the depth L is 280 to 310 mm and the diameter D1Φ is 600 mm.

  The axial moment applied to the main shaft will be described with reference to FIG.

When the washing drum tub is horizontal
Axial moment FM = L · W (kgf-mm)
W: Force applied to the tip of the washing drum tub (kgf)
(Because a balancer is attached, the tip load increases.)
L: Depth length of the washing drum tub When the washing drum tub is tilted (when it has an inclination angle θ)
Axial moment FMθ = LCOSθ · W (kgf-mm)
From the above formula, the axial moment applied to the main shaft 18 of the washing drum tub 11 decreases as the inclination angle θ increases. For this reason, the drum type washing / drying machine has a larger axial moment applied to the main shaft 18 than the vertical washing machine.

  In the case of a drum-type washing / drying machine, it is possible to increase the inclination angle θ of the washing drum tub 11 to reduce the axial moment. However, the inclination angle θ is limited to the range of 10 to 20 ° as described above in order to maintain the basic performance of the drum type washing and drying machine.

  Further, in the relationship between the depth L of the washing drum tank 11 and the diameter DΦ, the axial moment can be reduced by shortening L while keeping DΦ constant, but there is a limit from the specific volume.

  The relationship between the cleaning power, damage, and the diameter DΦ of the washing drum tank / the depth L of the washing drum tank 11 will be described with reference to FIG.

  In this figure, the left vertical axis represents the cleaning power index, the right vertical axis represents the MA value (scratch value), and the horizontal axis represents the ratio of the diameter DΦ of the washing drum tank / the depth L of the washing drum tank 11. The solid line indicates the cleaning power index, and the dotted line indicates the MA value.

  This data is a measurement value when the inclination angle θ of the washing drum tub 11 is set to 10 ° to 20 °.

  The MA (Machine Action) test method is a method for evaluating damage to the laundry 9.

MA which evaluates the degree to which the laundry 9 is damaged by physical action
In the (Action) test method, a 400 mm square plain woven cotton cloth obtained by punching five circles having a diameter of D35 mm is used. Inspect and evaluate the damage to the laundry due to the sum of the number of frays in the five circles using mechanical force such as washing and tapping at the time of rinsing.

  The higher the MA value, the stronger the mechanical force received by the laundry and the better the cleaning power, but the more severely damaged the laundry 9 is.

  The MA value in a standard washing course is about 45 to 55. If it is less than that, the removal of dirt will worsen. If it is more than that, cloth damage will become intense and the function as a washing machine will be impaired.

  If the washing time is lengthened, the total amount of mechanical force received by the laundry 9 increases, and on the other hand, the fabric damage is also increased. Further, when the diameter of the washing drum tank 11 is increased, the effect of tapping is improved and the removal of dirt is improved, but the fabric damage is increased.

  Considering the advantages and disadvantages related to the washing performance, after various examinations and trials, the ratio (d / L) of the “radius dΦ / depth L of the washing drum tank 11” of the washing drum tank 11 is 0.9. It was found that it is appropriate to set the value in the range of -1.1. Here, d is the radius of the washing drum tank 11.

  In addition, by setting the ratio (d / L) within the range of 0.9 to 1.1, it is possible to provide a drum type laundry dryer that is easy to put in and out the laundry 9 and is compact and has less vibration and noise. .

  The compactification and noise / vibration will be described with reference to FIGS.

  FIG. 18 shows the washing drum tub 11 with d = L. In this case, the axial moment is minimal and ideal.

  FIG. 19 shows the washing drum tub 11 with d <L. In this case, the mechanical force is reduced by tapping and the cleaning power is reduced. Moreover, since the depth dimension of the outer frame housing 1 increases, it cannot be made compact.

  FIG. 20 shows the washing drum tub 11 with d> L. In this case, the front side width of the outer frame casing 1 is increased, and compactness cannot be achieved. When the diameter of the washing drum tub 11 is increased, noise and vibration are increased due to an increase in centrifugal force during dehydration.

  From the above, the ratio (d / L) of “radius dΦ / depth L of the washing drum tank 11” (d / L) of the washing drum tank 11 has a minimum axial moment as it approaches 1.

  Further, the range of 0.9 to 1.1 is appropriate from the viewpoint of compactification, noise / vibration, and the cleaning performance and fabric damage performance shown in FIG.

FIG. 2 is a longitudinal sectional view of a drum type washing and drying machine according to an embodiment of the present invention. 1 is a perspective view of a drum type washing and drying machine as viewed from the front side according to an embodiment of the present invention. It is a figure which concerns on the Example of this invention, and is a figure which shows the driving | running process from washing to drying. FIG. 6 is a circuit block diagram according to an embodiment of the present invention. 1 is a perspective view of a washing drum tub according to an embodiment of the present invention. It is a graph concerning the Example of this invention, and represented the relationship between a rated capacity | capacitance and the volume of a washing drum tank from the viewpoint of a specific volume. It is related to the Example of this invention, and is the graph showing the relationship between dry cloth mass and poultry mass. It is a figure for demonstrating the example of this invention, and explains a dry cloth mass, a compress mass, and a shaft torque. It is a figure for demonstrating the inclination and washing | cleaning of a washing drum tank concerning the Example of this invention. FIG. 5 is a graph related to the embodiment of the present invention and showing the relationship between the inclination of the washing drum tub and cleaning. FIG. 5 is a graph related to the embodiment of the present invention and showing the relationship between the washing amount and the shaft torque in a graph. FIG. 5 is a diagram related to an example of the present invention, and is a graph showing a relationship between an inclination angle θ of a washing drum tank and an evaluation value. It is a figure which shows the magnitude | size before thin shape quoted in order to demonstrate the thinning (reduction of depth length) and water volume reduction of a washing drum tank concerning the Example of this invention. It is a figure which shows the magnitude | size after the thin shape quoted in order to demonstrate the thinning (reduction of depth length) and water volume reduction of the washing drum tank concerning the Example of this invention. It is a figure concerning the Example of this invention, and is the figure which represented the compactization large capacity | capacitance with the graph. It is a figure for demonstrating the axial moment concerning a main axis | shaft concerning the Example of this invention. FIG. 4 is a graph showing the relationship between the cleaning power, damage, and the diameter DΦ of the washing drum tank / the depth L of the washing drum tank according to the embodiment of the present invention. It relates to an embodiment of the present invention, and is a diagram given for explaining compactification, noise and vibration, and is an example of d = L. It relates to an embodiment of the present invention, and is a diagram given for explaining compactification, noise and vibration, and is an example of d <L. It relates to an embodiment of the present invention, and is a diagram given for explaining compactification, noise and vibration, and is an example of d> L.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Outer frame housing | casing, 2 ... Outer tub, 11 ... Laundry drum tub, 9 ... Laundry.

Claims (3)

A cylindrical outer tub for storing washing water and rinsing water provided in an outer frame housing, a cylindrical laundry drum tub rotatably provided in the outer tub for storing laundry, and the washing drum In the washing and drying machine having a rotation axis center line of the washing drum tub obliquely so that the charging port provided on the front end side of the washing drum tub is obliquely upward,
A drum-type washing machine or a drum-type laundry drying, wherein the washing drum tub has a drying capacity of 6 to 8 kg and a specific volume of the washing drum tub is 9 (L / kg) to 13 (L / kg) Machine. In the drum type washing machine or drum type washing and drying machine according to claim 1,
A drum type having a suspension for supporting the outer tub in an anti-vibration manner, a pulling spring for supporting the outer tub in an anti-vibration hanging manner, and a drive motor provided at the rear of the outer tub and rotatably supporting the washing drum tub Washing machine or drum type washer / dryer. In the drum type washing machine or drum type washing and drying machine according to claim 1 or 2,
A drum-type washing machine or a drum-type washing / drying machine, wherein the inclination of the rotation axis is set to about 10 to 30 degrees.

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