JP2006034758A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cause no water leakage when supplying water in a rinsing process even if an escape hole part for allowing air in an outer tub to escape is blocked with foam in a drum type washing machine. <P>SOLUTION: In a first rinsing process out of a plurality of (e.g., two) rinsing processes performed following a washing process, a control part 56 operates a water supply valve 30 intermittently until the water level in the outer tub 10 reaches the predetermined rinsing water level. In this embodiment, the ON time of the water supply valve 30 is set to 3 seconds, and the OFF time is set to 5 seconds. With intermittent water supply thus performed, air pressed by water flowing into the outer tub 10 by the ON operation of the water supply valve 30 can escape to the outside of the outer tub 10 from a portion not blocked with foam in the escape hole part 55 or can escape to the outside of the machine from a detergent injector 35 through a water supply pipe 37 during the OFF time (the stop time of water supply) of the water supply valve 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drum type washing machine having a drum that rotates around a horizontal axis (horizontal axis or inclined axis). In general, drum-type washing machines are often capable of continuously performing from washing to drying, but the drum-type washing machine referred to here may not be capable of drying.

  The drum-type washing machine has a configuration in which a cylindrical bowl-shaped drum is disposed inside an outer tub so as to be rotatable around a horizontal axis. In the outer tub in which laundry is stored and water is stored. Wash the laundry by rotating it. In such a general drum-type washing machine, a space between an inlet of the outer tub and a door body for closing the outer tub is sealed with a seal member such as packing. That is, the outer tub is almost sealed so that water does not leak out from the outer tub even if the drum rotates during dehydration.

  For this reason, when water is supplied into the outer tub that is close to the airtight state as described above, especially when the water supply pressure is high and water is supplied vigorously, the air in the outer tub suddenly escapes. Therefore, there is a risk that water will flow back into the outer tub without being well-entered. In this case, for example, when water is supplied through the detergent container, there is a possibility that water leaks out of the apparatus from the housing portion that houses the detergent container.

Therefore, the door body that covers the inlet of the outer tub is provided with an escape hole for escaping the air in the outer tub, and when the water is vigorously supplied, the air in the outer tub pushed by the inflowing water is removed. There is a drum-type washing machine that escapes from the tank (in the atmosphere). (For example, see Patent Document 1)
JP 2003-311094 A

  The above-mentioned escape hole is provided at a position where even if water and bubbles scatter in the outer tank in a normal operation state, they are difficult to hit, and the structure is such that water and bubbles do not easily enter the escape hole. . However, when relatively intense foaming occurs in the outer tub during the washing process, the foam may enter the escape hole, and the hole may be blocked by the foam. In such a state, when water is supplied in the next rinsing process, the air pushed into the outer tub is not allowed to escape from the escape hole, so the water does not enter the outer tub and flows backward. There is a risk that it will end up.

  The present invention relates to a drum-type washing machine and aims to solve such problems.

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a horizontal axis type drum is rotatably provided inside an outer tub disposed in an outer box, and water is stored in the outer tub. A drum-type washing machine for washing laundry contained in the drum by rotating the drum in a state;
A door body for closing a laundry inlet provided in the outer tub in a water-sealed state, a water supply pipe connected to the outer tub, and water supply means for supplying water from an external water source into the outer tub through the water supply pipe And a water supply control means for controlling the operation of the water supply means, and an escape hole for releasing the air in the outer tank to the outside of the tank (in the atmosphere) when the outer tank is closed by the door body. With
The water supply control means operates the water supply means intermittently when supplying water up to a predetermined rinse water level in the rinsing process.

  In this configuration, the water supply means is operated intermittently when supplying water to a predetermined rinse water level in the rinsing process, so that the escape holes are blocked with bubbles so that the air in the outer tub cannot be sufficiently released. Even if it is in a normal state, stop the water supply before the reverse flow of the water supply occurs, and during this stop, let the air out of the tank (air) from the part that is not blocked by the bubbles in the escape holes and the water supply pipe Water can be supplied into the outer tank while escaping. Therefore, water leakage to the outside of the machine can be prevented.

  Examples of the water supply means include a water supply valve connected to a tap water source and a water supply pump that sucks water from an external water storage tank such as a bath.

  In the structure of Claim 1, as described in Claim 2, it is preferable that the water supply control means operate the water supply means intermittently so that the off time is longer than the on time.

  With such a configuration, water can be supplied while sufficiently releasing the air in the outer tub, and water leakage to the outside of the machine can be more reliably prevented.

  Further, in the configuration of claim 1, as described in claim 3, the water supply control means is configured to intermittently operate the water supply means in at least the first rinsing stroke in a plurality of rinsing strokes. Is preferred.

  Since the intrusion of bubbles into the escape hole occurs in the washing process, the escape hole tends to be blocked during the first rinsing process. Therefore, water leakage to the outside of the machine can be effectively prevented by performing intermittent water supply at least in the first rinsing process.

  In addition, as described in claim 4, the water supply control means may be configured to operate the water supply means intermittently only in the first rinsing process.

  In the case of intermittent water supply, it takes longer to collect water than continuous water supply. On the other hand, when the rinsing operation by the rotation of the drum is performed in the first rinsing process, water may be slightly applied to the escape hole at that time, and the bubbles may be extinguished by the water. Moreover, if time passes for a long time, a bubble will disappear easily. For this reason, in the second and subsequent rinsing steps, the escape hole is less likely to be blocked with foam.

  Therefore, it is possible to suppress the increase in the operation time as much as possible by performing the intermittent water supply only in the first rinsing process that is likely to be blocked with bubbles.

  Furthermore, in the structure of Claim 1, it is provided with the foam detection means for detecting the foaming condition in the said outer tank as described in Claim 5, and the said water supply control means is the said foam detection during a washing process. It is preferable that the water supply means is intermittently operated in the rinsing process when it is detected that the foaming of a predetermined amount or more is detected by the means.

  When there is a lot of foaming in the outer tank, the escape hole is likely to be blocked. Therefore, if intermittent water supply is performed in the rinsing process when it is detected that there is a lot of foaming in the washing process, water leakage can be effectively prevented, and an increase in operating time can be suppressed.

  In addition, the escape hole part can be formed in this circulation air path, when the circulation tank for drying is connected to the outer tank itself, the door body, or the outer tank. On the other hand, when the escape hole is formed in the door body as described in claim 6, the foam easily enters the escape hole when foamed. If the configuration is applied, a greater effect can be obtained.

In the invention according to claim 7 made to solve the above-mentioned problem, a horizontal axis type drum is rotatably provided inside an outer tub disposed in an outer box, and water is stored in the outer tub. A drum-type washing machine for washing laundry contained in the drum by rotating the drum in a state;
A door body for closing a laundry inlet provided in the outer tub in a water-sealed state, a water supply pipe connected to the outer tub, and water supply means for supplying water from an external water source into the outer tub through the water supply pipe And water supply control means for controlling the operation of the water supply means, and when the outer tub is in a closed state by the door body, an escape hole for escaping the air in the outer tub to the outside of the tank,
The water supply control means controls the operation of the water supply means so as to reduce the water supply capacity when supplying water to a predetermined rinse water level in the rinsing process, compared to supplying water to a predetermined wash water level in the washing process. It is a feature.

  In this configuration, the water supply means is controlled so that the water supply capacity (the amount of water supplied per unit time) is lowered during the water supply in the rinsing process than in the water supply during the washing process. For example, when the water supply means is a water supply valve, it is intermittently opened (driven). Alternatively, the valve is continuously opened, but the valve opening amount is reduced as compared with the washing process (assuming that the valve opening amount can be adjusted). In addition, for example, when the water supply means is a water supply pump, it is driven intermittently. Or it drives continuously, but the rotation speed of a pump motor is reduced compared with a washing process, and discharge capacity is reduced (assuming that the rotation speed of a pump motor can be adjusted).

  In this way, even if the escape hole is closed, the air in the outer tub escapes from the part not covered by the foam of the escape hole and the water supply pipe to the outside of the tank (in the atmosphere) Since water can be supplied into the outer tank little by little, it is possible to prevent water leakage from the outside due to the backflow of the water supply.

  According to the drum type washing machine of the present invention, in the washing process, even if the foam enters the escape hole part for escaping air from the outer tub, and the escape hole part is blocked by the foam, the next rinsing process It is possible to prevent water leakage to the outside due to the reverse flow of the water during the water supply.

  Hereinafter, a drum type washing machine according to an embodiment of the present invention will be described with reference to the drawings.

  In FIG. 1, an outer box 1 forming the outer shape of the drum-type washing machine has a body portion 1a in which left and right side surfaces and a rear surface are integrally formed, and the front surface, the lower surface, and the upper surface are open, and is attached to the upper surface of the body portion 1a. The upper surface plate 1b, the front plate 1c that detachably covers the front surface of the body portion 1a, and a pedestal portion 1d on which the body portion 1a is placed. The upper surface of the body portion 1a is formed in a curved shape that is lowered from the rear to the front end, and the upper surface plate 1b is similarly formed in a curved shape that is lowered in the forward direction.

  A large laundry input port 2 that is long in the left-right direction is formed from the front end portion to the rear portion of the upper surface plate 1b. The height from the floor surface to the front edge of the laundry slot 2 is set to about 70 cm in consideration of the average height of Japanese women so that the user can easily put in and take out the laundry.

  The upper lid 3 for opening and closing the laundry input port 2 is slidable along the laundry input port 2. When the user presses the lid opening button 5c provided on the right side in the closed state, The laundry input port 2 is automatically slid rearward to open. When closing the opened upper lid 3, the user puts a finger on the handle 3 a provided at the front end of the upper lid 3 and pulls it forward. When the upper lid 3 is completely closed, the upper lid 3 is latched by a latch mechanism (not shown) to keep the closed state.

  A detergent container 4 covered with a lid that opens sideways is provided on the left rear side of the upper lid. An operation panel 5 is provided on the right side of the upper lid 3 so as to extend in the front-rear direction. The operation panel 5 has various operation keys 5a for setting a driving course, a reservation time, etc., and lights according to these settings, informs the progress of the washing process, or the remaining reservation or driving. Various displays 5b for displaying time and the like are appropriately distributed. A part of the operation key 5a that is used less frequently is covered with a lid that opens rearward. Further, a tap water supply port 6 connected to an external water faucet or the like via a hose is provided behind the detergent container 4, and bath water is supplied to the rear of the operation panel 5 via a bath water hose. A bath water supply port 7 is provided.

  Next, the internal configuration will be schematically described with reference to FIGS. Inside the outer box 1, the outer tub 10 whose peripheral surface is substantially cylindrical and whose both end faces are substantially closed is suspended from the upper left and right sides with the end faces facing the left and right side surfaces of the outer box 1. The two springs 11 and the two dampers 12 that support the lower part of the outer tub 10 in the front-rear direction are held so as to be moderately swingable. Inside the outer tub 10, as an inner tub for accommodating laundry, a horizontal axis having a substantially cylindrical peripheral surface with a large number of water passage holes 13a and substantially closed both end surfaces. A mold drum 13 is provided so as to be rotatable about a horizontal axis C extending in the left-right direction. On the inner peripheral surface of the drum 13, baffles 13 b for scraping the laundry along with the rotation are provided around the horizontal axis C at an angular interval of approximately 120 °.

  The main shaft 14 fixed to the center of the left end surface of the drum 13 is supported by a bearing 17 held by a first bearing case 16 fixed to the left end surface of the outer tub 10. On the other hand, the auxiliary shaft 15 fixed to the center of the right end surface of the drum 13 is supported by a bearing 19 held by a second bearing case 18 fixed to the right end surface of the outer tub 10. The main axis 14 and the auxiliary axis 15 form the horizontal axis C. The rotor 20b of the outer rotor type motor 20 is fixed to the tip of the main shaft 14 projecting sideways from the left end surface of the outer tub 10, while the stator 20a of the motor 20 is fixed to the first bearing case 16 that also serves as a motor base. Is fixed. When a drive current is supplied to the stator 20a from a control circuit (not shown), the rotor 20b rotates thereby, and the drum 13 is rotationally driven via the main shaft 14 at the same rotational speed as the rotor 20b.

  An outer tub opening 100 for taking in and out the laundry is provided at a position that coincides with the laundry input port 3 of the outer box 1 from the upper part of the outer peripheral surface of the outer tub 10 to the diagonally forward direction. It can be opened and closed by an outer tub door 101 (the door body of the present invention) provided so as to be rotatable about an axis extending in the direction. A drum opening 130 for taking in and out the laundry is also provided on the peripheral surface (body portion) of the drum 13, and the drum opening 130 is a drum composed of two door bodies 131a and 131b having a double door structure in the front-rear direction. The door 131 can be opened and closed freely. However, since the drum 13 is rotatable, a drum lock device 21 is provided below the stator 20a so that the drum 13 maintains a stopped state at a position where the drum opening 130 coincides with the outer tank opening 100 in the radial direction. Thus, when the drum 13 is stopped, the pin protruding from the drum lock device 21 and the engagement recess formed in the rotor 20b are engaged with each other, and the stop position of the drum 13 is determined.

  A drainage port 22 is provided at the right bottom of the outer tub 10, and the drainage port 22 is connected to an external drainage groove through a drainage hose (not shown) via a drainage valve 23 that is opened and closed by the operation of a torque motor. In addition, a recessed portion 10 a that is recessed by one step is formed at the bottom of the outer tub 10, and a water heater 24 that extends substantially horizontally is disposed there and stored in the outer tub 10. Water can be heated to an appropriate temperature.

  Electrolysis provided with a plurality of plate-like electrodes 25a for electrolysis in the electrolysis chamber 25b in order to electrolyze the water stored in the outer tub 10 at the bottom of the outer tub 10 on the front side of the recess 10a. The water generating unit 25 is detachably disposed on the outer tub 10. The electrolysis chamber 25b of the electrolyzed water generating unit 25 and the outer tub 10 are connected by two communication pipes 25c and 25d extending substantially horizontally in the vertical direction. The electrode 25a for electrolysis is obtained by coating platinum on the surface of titanium so as to have corrosion resistance. When a predetermined voltage is applied between the electrodes for electrolysis 25a while the electrode for electrolysis 25a is submerged in water, hypochlorous acid is applied. Electrolyzed water containing a chlorine-containing substance such as an acid and active oxygen species is generated, thereby improving the washing performance and exhibiting a sterilizing action.

  As shown in FIG. 1, a tap water supply port 6 to which the other end of a tap water supply hose whose one end is connected to a tap is connected to the rear upper surface of the outer box 1, and one end is, for example, in a bath tub And a bath water supply port 7 to which the other end of the bath water hose immersed in the water is connected. As shown in FIG. 4, the tap water supply port 6 is connected to the water introduction port of the water supply valve 30 (water supply means of the present invention), and the bath water supply port 7 is inhaled by the bath water pump 31 (water supply means of the present invention). Connected to the mouth. A plurality of water outlets of the water supply valve 30 are roughly divided into a detergent water supply channel 32 and a soft finish water supply channel 33, and the detergent container 4a of the detergent container 4 and the softness finishing agent are respectively installed in the detergent feeder 35. It is comprised so that water may be discharged to the accommodating part 4b. Further, the detergent water supply path 32 is branched and serves as a priming pipe 34 for supplying priming water to the bath water pump 31. The bath water supply channel 36 connected to the discharge port of the bath water pump 31 is also configured to discharge water to the detergent container 4 a of the detergent container 4. Although not shown, a dehumidifying water channel is also provided from the water supply valve 30 for flowing cooling water for dehumidification during the drying operation.

  All of the water discharged into the detergent container 4 finally flows from the detergent feeder 35 through the water supply pipe 37 and flows into the outer tub 10 from the water inlet on the rear side of the outer tub 10. Thus, tap water is supplied to the outer tub 10 from the water supply pipe 37 via the detergent dispenser 35 according to the valve opening / closing control of the water supply valve 30 and bath water according to the operation of the bath water pump 31. Is done.

  On the rear side of the recessed portion 10 a of the outer tub 10, a cylindrical pipe line 10 c extending from the opening 10 b provided near the center in the left-right direction of the outer tub 10 to the right end surface side is formed integrally with the outer tub 10. The pipe 10c is a part of a drying circulation air passage for circulatingly supplying heated air into the outer tub 10 during the drying operation. Although not shown, other main parts of the drying circulation air passage are disposed on the right end surface of the outer tub 10 and outside and behind the second bearing case 18, and the opening from the outer tub 10 is opened in the drying circulation air passage. A dehumidifier for dehumidifying the moist air taken out via 10b, a drying heater for heating the dehumidified air, and a circulating air flow of outer tank → dehumidifier → heater → outer tank is generated. A blower fan or the like is provided.

  As shown in FIG. 5, the housing of the outer tub door 101 is composed of two members, a lower opening upper member 101a and an upper opening lower member 101b, both of which are plastic molded products. The joint between the upper member 101a and the lower member 101b is above the sealing position by the packing 51 which is a sealing member. That is, it is outside the outer tub 10.

  The outer tank door 101 is formed in a hollow shape inside, and a large number of ribs 52 are provided inside. That is, a large number of ribs 52 are erected from the inner bottom surface of the lower member 101b toward the inner top surface of the upper member. A latch mechanism 53 for keeping the outer tank door 101 in a closed state by being engaged with the edge 10a of the outer tank 10 on the front side of the outer tank door 101 is provided. An operation lever 54 that is operated to release the latched state by the latch mechanism 53 is provided.

  In the lower member 101b of the outer tub door 101, the right end position (according to the front view) on the rear side surface where the rotation shaft portion 101c is formed faces the outer tub 10 with the outer tub door 101 closed, An escape hole 55 is provided for allowing the air in the outer tub 10 to escape to the outside of the outer tub 10 through the inside of the outer tub door 101. As shown in FIG. 6, the escape hole 55 includes a lower hole 55a provided at the lowermost portion of the rear side surface of the lower member 101b and an upper hole 55b provided slightly above.

  FIG. 7 is an electric system block diagram of the drum type washing machine. The control unit 56 (water supply control means of the present invention) is configured mainly with a microcomputer including a CPU, ROM, RAM, timer, etc., and relates to washing as described later based on a control program stored in the ROM. Various controls such as driving operation of each stroke are executed. The control unit 56 includes an operation key 5a, a display unit 5b, a water level sensor 57 that detects the water level of water stored in the outer tub 10, a temperature sensor 58 that detects the temperature of air exhausted from the outer tub 10, A door switch 59 for detecting opening / closing of the upper lid 3 is connected. Further, a load driving unit 60 is connected to the control unit 56, and the motor 20, blower motor 61, heater 62 for drying, water supply valve 30, bath water pump 31, drainage valve 23, etc. are connected via the load driving unit 60. To control the operation.

  In the configuration as described above, when the water supply valve 30 is opened by a command from the control unit 56 and water is supplied into the outer tub 10 in the washing process or the rinsing process, the air in the outer tub 10 is pushed by the supply water pressure. Then, the air flows into the outer tank door 101 from the escape hole 55. And the air which entered the inside of a door is discharged | emitted out of the outer tank 10 from the clearance gap between the upper member 101a and the operation lever 54, and the clearance gap of the joint of the upper member 101a and the lower member 101b. Therefore, even if water is supplied into the outer tub 10 vigorously, the water supply does not flow backward and water can be prevented from leaking out of the machine from the detergent dispenser 35.

  At the time of easy washing and dehydration, the surface of the outer tub door 101 facing the inner tub 10 is exposed to water and bubbles by the rotation of the drum 13. However, the escape hole portion 56 is provided on the rear side surface where it is difficult for water to hit, and this rear side surface is close to the standing wall 10b at the edge of the outer tub 10 with the outer tub door 101 closed. For this reason, it is difficult for water and bubbles to enter the outer tank door 101 from the escape hole 55. Even if water or bubbles enter slightly, the outer tub door 101 has a space for storing water, and a large number of ribs 52 are provided, so that it is difficult to leak outside. Furthermore, since the lower surface of the lower member 101b has an arc shape, and the lower surface is inclined so as to become lower toward the escape hole 55 at the rear end portion, water and foam can be discharged from the lowermost lower hole 55a to the outer tank. 10 can be returned.

  By the way, when there are many detergents thrown in, the foam | bubble in the outer tank 10 may become large compared with the normal time by rotation (washing | cleaning operation | movement) of the drum 13 of a washing process. In this case, bubbles may enter the escape hole 55, and all or a part of the lower hole 55a and the upper hole 55b of the escape hole 55 may be blocked by the foam. If it becomes like this, there exists a possibility that the air in the outer tank 10 cannot fully escape.

  Therefore, in the drum type washing machine, in the first rinsing process among a plurality of (for example, two) rinsing processes performed following the washing process, the control unit 56 sets the water level in the outer tub 10 to a predetermined rinsing water level. Until the water supply valve 30 is reached. In this embodiment, for example, the on time of the water supply valve 30 is 3 seconds and the off time is 5 seconds. That is, the water supply valve 30 is controlled so that the water supply capacity (the amount of water supplied per unit time) is reduced as compared with the washing process in which the water supply valve 30 is continuously turned on to a predetermined wash water level.

  In addition, if the laundry absorbs water and the water level drops while rinsing at a predetermined rinse water level, the makeup water is returned to the rinse water level. Perform intermittent water supply.

  In this drum type washing machine, by performing intermittent water supply in this way, the air pushed by the water flowing into the outer tub 10 by the ON operation of the water supply valve 30 is used when the water supply valve 30 is OFF (when water supply is stopped). In addition, it is possible to escape from the portion of the escape hole 55 that is not blocked by the foam to the outside of the outer tub 10, or to escape from the detergent feeder 35 through the water supply pipe 37 to the outside of the machine. Therefore, when water is supplied in the first rinsing process, even if the escape hole 55 is blocked by bubbles, it is possible to prevent the water from flowing backward from the water supply pipe 37 to the detergent container 4 side. It can prevent leaking out of the machine.

  In particular, in this drum type washing machine, since the water supply valve 30 is controlled so that the off time is longer than the on time, the air in the outer tub 10 can be sufficiently released, and more reliably to the outside of the machine. Water leakage can be prevented.

  In the second and subsequent rinse strokes, intermittent water supply is not performed, and water is supplied by continuously turning on the water supply valve 30 to a predetermined rinse water level. When the rinsing operation by the rotation of the drum 13 is performed in the first rinsing process, water may be slightly applied to the escape hole 55 at that time, and the bubbles may be extinguished by the water. Moreover, if time passes for a long time, a bubble will disappear easily. For this reason, in the second and subsequent rinsing strokes, it is difficult for the escape hole 55 to be blocked with foam. Therefore, it is possible to perform intermittent water supply only in the first rinsing process, which is likely to be blocked with bubbles, and continuously supply water in the second and subsequent rinsing processes, so that the operation time becomes longer. It can be suppressed as much as possible. However, if priority is given to the water leakage prevention effect over the operation time, intermittent water supply may be performed at least in the second rinsing stroke.

  As mentioned above, although one Example of the drum type washing machine of this invention was described, this invention is not limited to said Example.

  For example, the escape hole 55 is provided in the outer tank door 101, but is not limited thereto, and may be provided in the outer tank 10 itself or a dry circulation air passage communicating with the outer tank 10. In this case, it is preferable to provide the outer tank 10 itself or the upper part of the drying circulation air passage.

  In the present embodiment, intermittent water supply is always performed in the first rinsing process, but a bubble detection means for detecting foaming in the outer tub 10, for example, a sensor comprising a pair of electrodes is provided in the outer tub 10. Alternatively, it may be provided at an appropriate height position in the drying circulation air passage, and intermittent water supply may be performed in the first rinsing process if foaming of a predetermined amount or more is detected by this sensor in the washing process. In this way, water leakage can be effectively prevented, and an increase in operating time can be suppressed.

  Furthermore, in the first rinsing process, when the bath water pump 31 (water supply pump) is driven to supply bath water, the bath water pump 31 may be operated intermittently. Also at this time, it is preferable to control the bath water pump 31 so that the off time is longer than the on time.

  Further, when the water supply valve 30 is configured to be able to adjust the opening amount of the valve, the opening amount of the valve may be made smaller than the washing step in the first rinsing process so that the water supply flow rate is reduced. . Even in the case where the bath water pump 31 is configured to be able to adjust the rotation speed of the pump motor, in the first rinsing process, the number of discharges may be reduced by lowering the rotation speed than in the washing process.

  Furthermore, the drum type washing machine of the present embodiment is of a so-called top loading type having an opening on the peripheral surface of the drum and a laundry input port on the upper surface of the outer box, but has an opening on the front surface of the drum. It may be a so-called front loading type having a laundry inlet on the front surface of the outer box. Further, the drum type washing machine of the present embodiment is configured to close the outer tub opening and the laundry input opening with the outer tub door and the upper lid, respectively, but is not limited thereto, and the outer tub opening and the laundry input. The drum type washing machine may be configured such that the mouth is connected via a seal member (packing) and the outer tub opening and the laundry input port are closed only by the upper lid. In this case, the upper lid (the front door in the front loading type) is the door body of the present invention.

  Other changes and modifications can be made as appropriate within the scope of the present invention.

1 is an external perspective view of a drum type washing machine according to an embodiment of the present invention. The front longitudinal cross-sectional view of the principal part inside the drum type washing machine of a present Example. The right side longitudinal cross-sectional view of the principal part inside the drum type washing machine of a present Example. The block diagram drawn focusing on the water supply part of the drum type washing machine of a present Example. The longitudinal cross-sectional view of the principal part which shows the structure of the outer tub door periphery in the drum type washing machine of a present Example. The longitudinal cross-sectional view of the principal part of the lower member which comprises the outer tub door in the drum type washing machine of a present Example. The electric system block diagram of the principal part of the drum type washing machine of a present Example.

Explanation of symbols

1 Outer box 10 Outer tank 100 Outer tank opening (input port)
101 Outer tank door (door body)
13 drum 30 water supply valve (water supply means)
31 Bath water pump (water supply means)
37 Water supply pipe 56 Control unit (water supply control means)
55 Relief hole

Claims (7)

A horizontal axis drum is rotatably provided inside an outer tub disposed in the outer box, and the laundry stored in the drum is washed by rotating the drum while water is stored in the outer tub. A drum-type washing machine,
A door for closing the laundry inlet provided in the outer tub in a water-sealed state, a water supply pipe connected to the outer tub, and water supply means for supplying water from an external water source into the outer tub through the water supply pipe And water supply control means for controlling the operation of the water supply means, and when the outer tub is in a closed state by the door body, a release hole for escaping the air in the outer tub to the outside of the tank,
The drum-type washing machine, wherein the water supply control means intermittently operates the water supply means when supplying water to a predetermined rinse water level in a rinsing process.   The drum type washing machine according to claim 1, wherein the water supply control means operates the water supply means intermittently so that an off time is longer than an on time.   The drum type washing machine according to claim 1 or 2, wherein the water supply control means intermittently operates the water supply means in at least a first rinsing process among a plurality of rinsing processes.   The drum-type washing machine according to claim 3, wherein the water supply control means operates the water supply means intermittently only in the first rinsing process.   It is provided with a foam detection means for detecting the degree of foaming in the outer tub, and the water supply control means is a rinsing process when it is detected by the foam detection means that foaming of a predetermined amount or more has occurred during the washing process. The drum type washing machine according to any one of claims 1 to 4, wherein the water supply means is operated intermittently.   The drum-type washing machine according to any one of claims 1 to 5, wherein the escape hole is formed in the door body. A horizontal axis type drum is rotatably provided inside the outer tub disposed in the outer box, and the laundry stored in the drum is washed by rotating the drum with water stored in the outer tub. A drum-type washing machine,
A door for closing the laundry inlet provided in the outer tub in a water-sealed state, a water supply pipe connected to the outer tub, and water supply means for supplying water from an external water source into the outer tub through the water supply pipe And water supply control means for controlling the operation of the water supply means, and when the outer tub is in a closed state by the door body, a release hole for escaping the air in the outer tub to the outside of the tank,
The water supply control means controls the operation of the water supply means so as to reduce the water supply capacity when supplying water to a predetermined rinse water level in the rinsing process, compared to supplying water to a predetermined wash water level in the washing process. Drum-type washing machine featuring.