JP3306307B2 - Fully automatic washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine. In particular, the present invention relates to a fully automatic washing machine having a bath water suction pump that can use remaining hot water from a bath for washing.

[0002]

2. Description of the Related Art In such a fully automatic washing machine, a self-priming pump is used as a bath water suction pump. In self-priming pumps, priming must be provided at the start of operation, so tap water was always supplied to the pump as priming at the start of operation (for example,
JP-A-8-131688). However,
If priming is performed every time the pump is started to operate, tap water is used each time, so that the water saving effect of tap water also decreases.

[0003]

[0004]

An object of the present invention is to solve the technical problems described above, the wash water, can be effectively used washing resources such as a detergent, it is to provide an automatic washing machine provided with a bath water intake pump .

[0006]

To achieve the above object, a fully automatic washing machine according to the first aspect of the present invention comprises a self-priming pump for pumping bath water and supplying the same to a washing tub. As a priming water, a priming water supply channel for supplying tap water to the self-priming pump, a priming water supply channel opening / closing means for opening and closing the priming water supply channel, and a water supply for washing,
A water supply control means for opening the priming water supply channel opening / closing means to supply priming water and operating the self-priming pump, and for supplying water for rinsing, operating the self-priming pump without opening the priming water supply water channel opening / closing means. It is characterized by the following.

Here, when the self-priming pump is operated with water (priming water) stored therein, the self-priming pump operates in a self-priming operation in which water is sucked into a suction pipe communicating between the self-priming pump and the water. It is a pump that can. According to this configuration, the following operation is achieved. That is, at the time of washing, priming water is supplied, and the self-priming pump can supply bath water for washing. Even if the self-priming pump is stopped, the bath water is accumulated inside the self-priming pump. Therefore, the self-priming pump can supply the bath water without priming when rinsing. Therefore, the supply of priming water can be omitted when rinsing, so that tap water supplied as priming water can be saved as compared with the case where priming water is supplied.

According to a second aspect of the present invention, in the fully automatic washing machine according to the first aspect, when water is supplied for rinsing, it is detected that water is supplied to the washing tub. Detecting means is further provided, wherein the water supply control means opens the priming water supply channel opening / closing means to supply priming water and to operate the self-priming pump when there is no detection output of the detecting means during water supply for rinsing. Features.

According to this configuration, in addition to the function of the first aspect, the following function is provided. That is, it is assumed that there is no priming water in the self-priming pump and that the self-priming pump cannot discharge bath water during rinsing, such as when the fully automatic washing machine is operated after rinsing without washing. In such a case, priming water can be supplied, the self-priming pump can be operated without any trouble, and bath water can be supplied.

[0010] The fully automatic washing machine of the invention according to claim 3 is a contractor.
In fully automatic washing machine according to Motomeko 1, for rinsing
Detects when water is being supplied to the washing tub when supplying water.
Detecting means, a tap water supply channel for supplying tap water to the washing tub, and a tap water supply channel opening / closing means for opening and closing the tap water supply channel .
When there is no detection output of the detecting means at the time of water supply, water is supplied by opening the tap water supply water channel opening / closing means.

According to this configuration, the following operation is achieved in addition to the operation of the first aspect of the invention. That is, it is assumed that the self-priming pump cannot discharge the bath water when the bath water runs out. In such a case, tap water can be supplied to supply water for washing without any trouble. The priming water supply channel opening / closing means and the tap water supply water channel opening / closing means may be shared. In addition, the priming water supply channel and the tap water supply water channel may be shared.

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described.
This will be described in detail with reference to the accompanying drawings. FIG. 1 is a front sectional view of a schematic configuration of a fully automatic washing machine according to an embodiment of the present invention. This fully automatic washing machine includes a box-shaped housing 1, a washing tub 2 inside the housing 1, and a hanging rod 3.
And an inner tank 5 rotatably provided in the outer tank 4 and having a large number of small holes 5a on its surface. Washing water is stored in the washing tub 2, and the laundry is stored in the inner tub 5. The inner tank 5 and the stirring blade 6 provided at the bottom in the inner tank 5 are driven by a driving device 8 including a motor 7 and the like. During washing and rinsing, only the stirring blade 6 rotates in one or both directions, and during dehydration, both the stirring blade 6 and the inner tank 5 rotate in one direction at high speed.

A washing tub 2 is provided at a lower portion in the housing 1.
A drain pipe 21 led out of the machine to drain water from
A drainage mechanism having a valve 22 and the like is provided. A water supply mechanism 30 for supplying washing water into the washing tub 2 is provided at an upper portion in the housing 1. Water supply mechanism 30
Can supply tap water supplied from a water supply facility (not shown) such as an external tap water, and bath water in a bathtub for washing.

FIG. 2 is a schematic diagram of the water supply mechanism 30. The water supply mechanism 30 includes each of the pipes 41 to 47, each of valves 31 and 32 including, for example, solenoid valves as opening and closing means for opening and closing the following water passages, and a pump P capable of sucking and sending out water. . The first part for guiding tap water supplied from a tap or the like into the washing tub 2 by these units.
A tap water supply channel and a second tap water supply channel, and a bath water supply channel for guiding bath water from the bathtub or the like into the washing tub 2.
A priming water supply channel for supplying tap water as priming water to the pump P is formed.

The first tap water supply channel has a first water supply valve connected to one end of a pipe 41 having one end connected to a tap water and the other end introduced into the upper part of the housing 1 and branched. A tube 42 is connected to the washing tub 2 through the tube 42 and the tube 43 is connected to the tube 42 and guided to the upper portion of the washing tub 2. A first water inlet 3 is provided at an end of the pipe 43 on the side of the washing tub 2.
6 is provided, in which a water inlet opening into the washing tub 2 is formed, and a detergent container 38 is mounted inside. The first tap water supply channel is opened and closed by a first water supply valve 31 to supply tap water into the washing tub 2 and to supply a detergent in a detergent container 38 as described later.

The second tap water supply channel includes the pipe 41 described above,
The other end of the pipe 41 is connected to the other end through the second water supply valve 32 and is connected to a pipe 45 introduced into the upper part of the washing tub 2. A second water inlet 37 is provided at the end of the pipe 45 on the washing tub 2 side, and a water inlet facing the inside of the washing tub 2 is formed therein, and a softener container 39 is freely inserted and removed from the front inside. Attached to. Softener container 39
Can accommodate a finishing agent therein, and the inside communicates with the inside of the washing tub 2 through a bent water channel 39a extending vertically so as to obtain a siphon effect. The second tap water supply channel is
Opened and closed by the second water supply valve 32, the tap water can be supplied into the washing tub 2, and the finishing agent in the softener container 39 can be gradually discharged from the bent water channel 39 a.

The bath water supply channel has a pipe 46 having one end led out of the machine and led to a bathtub or the like and the other end connected to the suction port 51d of the pump P, a water channel in the pump P, It is constituted by a pipe 47 introduced from the discharge port 51i to the upper part of the washing tub 2. A filter (not shown) is attached to one end of the pipe 46 so that foreign substances in the bath water to be sucked can be captured. The pump P can suck in the bath water through the pipe 46 and send it out of the discharge port 51i.

The priming water supply channel includes the pipe 41 and the pipe 4 described above.
2 and a pipe 44 connecting the pipe 42 and the priming port 51h of the pump P. The priming supply channel is
The first tap water supply channel is also used as a part of the first tap water supply channel.
And the pump P can be supplied with tap water as priming water. FIG. 3 is a cross-sectional side view of a schematic structure of a portion near the first water inlet 36.

The first water inlet 36 comprises a water passage 36a having a plurality of small holes 36d on the lower wall thereof, and a concave portion 36b located below the water passage 36a. In the recess 36b,
A detergent container 38 capable of accommodating a detergent therein is mounted so as to be freely taken in and out from the front. At the lower part of the rear wall of the detergent container 38, a rear wall opening 38a is formed. When the detergent container 38 is mounted on the recess 36b, the detergent container 38 and the recess 36b
A gap 36c exists between the lower wall and the lower wall. This gap 36c
Communicates with the inside of the detergent container 38 through the rear wall opening 38a. The detergent container 38 has a handle 38b for drawing out at the front.

At the time of washing, the detergent is charged into the detergent container 38 in advance, and the detergent container 38 is attached to the concave portion 36b.
When the first water supply valve 31 is opened, the tap water that has passed through the pipes 42 and 43 reaches the first water inlet 36. Then, the tap water drops from the water passage 36a through the small hole 36d into the detergent container 38, and together with the detergent in the detergent container 38, the rear wall opening 3
8a flows through the gap 36c and is supplied into the washing tub 2.

The first water inlet 36 and the above second water inlet 37 are provided by the applicant of the present application (Japanese Patent Application Laid-Open No.
22890), but is an example of the configuration and is not limited to the above-described configuration.
FIG. 4 is a sectional view of the pump P. FIG. 5 is a schematic diagram of a water channel inside the pump P, and is shown according to an operation state.

The pump P includes a casing 51 having the above-described suction port 51d, discharge port 51i, and priming port 51h.
Impeller 5 which is a rotating member which pushes water in 1
2 is provided. The impeller 52 can be rotated by a motor 53 via a shaft 56 sealed by a seal member 55.

Inside the casing 51, a suction chamber 51a connected to a suction port 51d, a suction chamber 51a and a central opening 5a.
A rotating chamber 51b that communicates through 1e and rotatably houses the impeller 52, and a discharge chamber 51c that is provided around the rotating chamber 51b and communicates with the rotating chamber 51b through an upper opening 51g and a return water port 51f. I have. Discharge chamber 51c
Is formed with a discharge port 51i and a priming port 51h. The suction port 51d is provided with a pipe 4 from inside the suction chamber 51a.
A check valve 54 is provided for preventing the outflow of the washing water to 6.

When the pump P is operated in a state where priming water is stored at the start of the operation, water can be sucked into the empty pipe 46 (this operation is called a self-priming operation).
It is a self-priming pump. The self-priming pump can continuously suck in and discharge water after the self-priming operation. In addition, the pump P may be a self-priming pump, and is not limited to the above-described configuration.

The operation of the pump P will be described with reference to FIG. As shown in FIG. 5A, when a predetermined amount of priming water is supplied from the priming water supply channel into the discharge chamber 51c, for example, the supplied tap water is supplied to such an extent that the return water port 51f is closed, the tap water enters the rotating chamber 51b. Also flows in. As shown in FIG. 5B, when the impeller 52 rotates, the air (open arrow) and the washing water (arrow) in the rotation chamber 51b are discharged to the discharge chamber 51c. The discharged washing water passes through the discharge chamber 51c and returns to the rotating chamber 51b from the water port 51f.
The air in c is discharged from the discharge port 51i. At the same time, the inside of the suction chamber 51a becomes negative pressure, the air in the pipe 46 is sucked, and the bath water is absorbed. Eventually, FIG. 5 (c)
As shown in (2), the bath water reaches the suction chamber 51a, fills the casing 51, and is continuously discharged to the pipe 47. Further, even if the rotation of the impeller 52 stops, the suction chamber 5
The water in 1a does not flow out to the pipe 46 by the check valve 54,
It is stored at the bottom inside the casing 51. The accumulated water can be used as priming water when the pump P is operated thereafter.

A description will be given with reference to FIG. The fully automatic washing machine includes a control unit 11 for controlling each unit and a water level detecting unit for detecting a water level in the washing tub 2.
It is provided within. The water level detecting means includes a water level sensor 91 provided at an upper portion in the housing 1 and a water level sensor 91.
And a pressure hose 92 connected to an air trap 4a provided at one corner of the bottom of the outer tank 4. When the level of the washing water in the washing tub 2 rises, the air trap 4
The pressure in a rises. By detecting this pressure with a water level sensor 91 via a pressure hose 92, the control unit 11
Can detect the water level in the washing tub 2.

The control unit 11 includes a microcomputer (CPU) as a control center.
The control is executed based on programs and data stored in advance in the M, RAM, and the like. At this time, the control unit 11 performs control by measuring the time based on the count amount of the counter set on the software. The control unit 11 includes a pump P,
The first water supply valve 31, a display element 13 such as an LED for displaying operation, and the like are connected via a drive circuit (not shown). The CPU gives a command signal to each of these devices to operate each device in a desired state. For example, CP
U gives an open / close signal to the first water supply valve 31 and the first water supply valve 3
1 is opened / closed. Further, the CPU drives the motor 53 to rotate the impeller 52 to operate the pump P. In addition, the CPU can emit a predetermined LED to perform an abnormality notification or the like.

The control unit 11 is connected to the above-mentioned water level switch 91, an operation panel 12 for operating the fully automatic washing machine, and the like. The CPU controls the operation of each device according to an output signal from the operation panel 12 or the like. The operation panel 12 includes a bath water key for using bath water, a reservation key for performing a reserved operation for starting operation when a predetermined start time has elapsed after the operation start operation, and a A start key is provided. When the bath water key is set, the bath water can be sucked from the bathtub by the pump P and used as washing water. When the reservation key is set, the operation of the fully automatic washing machine is started after a lapse of a predetermined time. With the combination of the bath water key and the reservation key, a total of four types of operation can be performed. That is, only the bath water key is set and the bath is started immediately while the bath water is being absorbed (bath water course). The bath water key and the reservation key are simultaneously set, and the bath water is absorbed during the reserved operation. Course (bath water reservation course), without setting any bath water key or reservation key, supply tap water, set the course to start operation immediately, set only the reservation key and make reservation operation with tap water There are ~ courses.

Next, the control contents of the control section 11 will be described with reference to the flowcharts shown in FIGS. The operation at that time will be described with reference to the timing charts of FIGS. In addition,
In each figure, the open state of the first water supply valve 31 (referred to as “water supply valve”) is indicated as “ON”, the closed state is indicated as “OFF”, the operating state of the pump P is indicated as “ON”, and the stopped state is indicated as “OFF”. Was.

Bath Water Course Referring to FIG. 6 and FIG. When the start key is pressed,
The first water supply valve 31 is opened (step S1), and tap water starts to be supplied (timing D1). This tap water is supplied to the pump P as priming water, and is supplied from the first water inlet 36 into the washing tub 2. Tap water is continuously supplied for a predetermined time Ta, for example, for 20 seconds (step S2). Here, the predetermined time Ta is set as a time during which a predetermined amount of priming water can be supplied to the pump P. Time Ta
(Timing D2), the pump P is operated (step S3). In case of bath water course (step S4
No), at the same time, the first water supply valve 31 is closed (step S6), and the supply of the priming water ends.

When the pump P is operated, bath water is sucked up from the bathtub through the pipe 46 and supplied into the washing tub 2. At the start of the operation of the fully automatic washing machine, the bath water starts to be discharged into the washing tub 2 after a lapse of the self-priming time from the start of the operation of the pump P, for example, about one minute (timing D).
4). At the same time, bath water is stored in the washing tub 2,
Until the water level reaches the set water level, the supply of bath water is continued by the pump P (step S7). That is, the water level detection means detects that the bath water level has reached a set water level, for example, a water level corresponding to a predetermined amount of washing water in the washing tub 2. When the water level reaches the set water level, the operation of the pump P is stopped (step S8).
(Timing D3). Thereafter, a washing operation is performed under predetermined conditions (step S9).

After the washing operation is completed, the valve 22 is opened and drained (step S10), and the motor 7 is driven under a predetermined condition to perform a dehydration operation (intermediate dehydration) (step S1).
1). Hereinafter, the rinsing step (step S1) described in detail below
2), dehydration (step S13) is performed. Next, the rinsing step will be described with reference to the flowchart in FIG.

As described above, the priming water is supplied in steps S1 to S6 (step S21 in FIG. 7), and in steps S3 to S3.
8, the pump P is operated (Step S22 in FIG. 7),
A washing operation is being performed. Therefore, the bath water is sufficiently accumulated in the pump P, and in this state, the pump P sucks up the bath water without supplying the priming water,
It can be supplied into the washing tub 2.

First, the pump P is operated (step S30). At this time, the supply of priming water as in step S21 is not performed. With the start of operation of the pump P,
Normally, bath water is sucked up and starts to be discharged in a very short time (timing E1). At the same time, the water level in the washing tub 2 starts to rise. Next, in step S31, it is determined whether or not the water level in the washing tub 2 has reached the reset water level (the lower limit water level detected by the water level detecting means). That is, the water level detecting means detects that the water level reaches the reset water level for a predetermined time from the start of the pump operation. Here, the predetermined time is set as a time during which the water level in the washing tub 2 can sufficiently reach the reset water level due to the water absorption capacity of the pump P. Therefore, if the arrival of the water level cannot be detected, it can be determined that the bath water has not been discharged. On the other hand, if the arrival of the water level can be detected, it can be determined that the bath water has been discharged. That is, it is possible to detect that water is being supplied into the washing tub 2 in step S31.

If bath water is being discharged by the operation of the pump P, the arrival of the water level is detected (Y in step S31).
ES), the operation of the pump P is continued, and the water level continues to rise. In step S40, it is determined that the water level in washing tub 2 has reached the set water level. That is,
During a predetermined time from the start of the pump operation, the water level detecting means detects that the water level reaches the set water level. Here, the predetermined time is set as a time during which the water level in the washing tub 2 can sufficiently reach the set water level by the water absorption capacity of the pump. Therefore, if the arrival of the water level cannot be detected, it can be determined that the supply of bath water has been interrupted.

When the bath water is accumulated to the set water level by the operation of the pump P (YES in step S40), the operation of the pump P is stopped (step S41) (timing E2). Thereafter, the rinsing operation is performed under predetermined conditions (step S42), and after the rinsing operation is completed, the water is drained (step S43), and the rinsing process ends. In this way, the supply of priming water can be omitted when rinsing, so that tap water supplied as priming water can be saved as compared with the case where priming water is supplied.

In the above description, it is assumed that bath water is sufficiently stored in the bathtub and that the bath water sucked at the time of washing is stored in the pump P. In an actual washing operation, the situation may be different. For example, this is the case where the check valve 54 does not function sufficiently and the priming water is not stored in the pump P. Also, when the fully automatic washing machine starts operating from the rinsing step without performing the washing step, step S21 is not performed and no priming water is stored in the pump P. This will be described with reference to FIGS.

In such a case, the pump P cannot perform the self-priming operation even by the operation of the pump P in step S30.
As a result, the bath water is not absorbed, and the water level does not reach the reset water level (NO in step S31). Therefore, the pump P is stopped, the first water supply valve 31 is opened, and the pump P
The priming water is supplied inside (step S32) (timing E3). The priming water supply is performed for a predetermined time Tc, for example, 20
This is performed for a second (step S33). Here, the predetermined time Tc
Is set as a time for priming similarly to the predetermined time Ta.

Thereafter, the first water supply valve 31 is closed, and the pump P is operated again (step S34) (timing E4). Since the pump P is supplied with priming water in steps S32 to S34, it starts sucking the bath water, and after the self-priming time, the bath water starts to be discharged into the washing tub 2 and the water level rises. In step S35, similarly to step S31, it is determined whether or not the water level has reached the reset water level within a predetermined time from the start of operation of the pump P in step S34.

If bath water is being discharged by the operation of the pump P, the arrival is detected within a predetermined time (step S3).
(YES in 5), the operation of the pump P is continued, and the water level continues to rise. Then, when the bath water is accumulated to the set water level (YES in step S40), the operation of pump P is stopped (step S41) (timing E
5) Then, rinsing operation and drainage (steps S42, S4)
3) is performed.

As described above, even when there is no priming in the pump P and the pump P cannot perform the self-priming operation at the time of rinsing, the pump P can be operated without any trouble by supplying the priming water, and the bath water can be supplied. it can. By the way, even if the pump P is operated after the supply of the priming water in step S34, a case where the bath water is not discharged is also assumed. For example, there is no bath water in the bathtub, and the bath water is not supplied into the washing tub 2 even if the pump P is operated. In such a case, since the water level does not reach the reset water level with reference to FIG. 7 and FIG.
O) First, the pump P is stopped, a predetermined LED is made to emit light, and the abnormality is notified (step S36). Then
Perform the following tap water supply treatment. That is, the first water supply valve 31 is opened (step S37) (timing E6), and water is supplied to the set water level (step S38).
1 is closed (step S39) (timing E7). Thereafter, the rinsing operation and drainage are performed as described above (step S4).
2, 43) are performed.

Further, the loss of the bath water is not limited to before the rinsing step. For example, the pump P may disappear during the operation of the pump P (YES in step S31 or YES in step S35). At this time, the water level rises only halfway to the set water level. In such a case, the arrival of the water level is not detected in step S40 (NO in step S40), and as described above, the operation of the pump P is stopped, the abnormality is notified (step S36), and the tap water is supplied (step S37). To 39) are performed, and then the rinsing operation and drainage (steps S42 and S43) are performed.

As described above, even when the pump P cannot discharge bath water, tap water can be supplied to supply water for washing without any trouble. The bath water reservation course will be described with reference to FIGS. When a predetermined time has elapsed after the setting of the reservation operation by the reservation key, the following processing is performed. During the reservation operation, it is assumed that the detergent is stored in the detergent container 38 and is automatically supplied.

First, the first water supply valve 31 is opened (step S1) (timing D1), and tap water starts to be supplied to the pump P as priming water, and is also supplied from the first water inlet 36 into the washing tub 2. Begin to be. The tap water flowing through the first water inlet 36 is supplied into the washing tub 2 while the detergent contained in the detergent container 38 flows out. After a lapse of a predetermined time Ta, for example, 20 seconds from the timing D1 (Step S
2) (Timing D2), the pump P is operated (Step S3). In the case of the bath water reservation course (YES in step S4), after a lapse of a predetermined time Tb, for example, one minute (step S5) (timing D10), the first water supply valve 31 is closed (step S6). Here, the predetermined time Tb is:
When the flow rate of the tap water is small, the time is set as a time during which the detergent in the detergent container 38 can be reliably discharged during the time (Ta + Tb).

After the operation of the pump P, the supply of bath water is started in the same manner as in the bath water course described above. Then, bath water is supplied into the washing tub 2 until the set water level is reached (steps S7 to S8), and thereafter, washing operation, drainage, intermediate dehydration, a rinsing step, and dehydration (steps S9-1)
3) is performed sequentially. As described above, in the bath water reservation course, the tap water flowing for a predetermined time (Ta + Tb) is longer than that in the bath water course flowing for a predetermined time Ta.
The detergent in 8 can be reliably drained.

In addition, priming is generally performed for a predetermined time Ta in a normal bath water course in which the detergent container 38 is not used, and for a predetermined time (Ta + Tb) in a bath water reservation course in which the detergent container 38 is assumed to be used. Since it is performed, appropriate priming can be supplied according to the operation mode, that is, the usage state of the detergent container 38, and tap water can be saved.

During the time Tb, the priming water is supplied even after the operation of the pump P is started, so that the priming water flowing out by the operation of the pump P can be supplemented. It also has the effect of shortening the washing time. By the way, in the above-described embodiment, the priming at the start of the operation of the pump P is performed so as to end at the same time as the start of the operation of the pump P (excluding the water supply at the time of washing the bath water reservation course).
The priming may be continued until after the operation of the pump P is started as described later.

This will be described with reference to the flowchart of FIG. 11 and the timing chart of FIG. 13A and 13B show the case of the above-described embodiment.
(C) and (d) show the case of FIG. 11, and (e) and (f) show the case of FIG. 12 described later. First,
The first water supply valve 31 is opened (step S70) (timing D1), and tap water starts to be supplied to the pump P as priming water. A predetermined time Ta from the timing D1, for example,
After 20 seconds have elapsed (step S71) (timing D
2), the operation of the pump P is started (Step S7)
2). After a lapse of a predetermined time Td, for example, 10 seconds (step S73) (timing D5), the first water supply valve 31 is closed (step S74). Here, the predetermined time Td is:
As described above, the time is set as a time that can compensate for the priming water flowing out from the discharge port 51i of the pump P with the rotation of the impeller 52.

Thereafter, bath water is supplied to the set water level (step S75), and the pump P is stopped (step S76) (timing D6). As described above, when a part of the priming water flows out of the discharge port 51i due to the operation of the pump P, the priming water is supplemented by being supplied after the operation of the pump P is started. Can be prevented. Therefore, the self-priming time is shorter than when the supply of the priming water is terminated before the operation of the pump P is started, so that the operation time of the pump P and further the washing time can be shortened. Further, by shortening the operation time of the pump P, it is possible to extend the life of the pump P. For example, the operating time (timing D2 to D6) of the pump P in FIG. 13D is the operating time (timing D2 to timing D2) of the pump P in FIG.
D3).

Since the pump P is started to operate after the start of the supply of the priming water, the priming water can be supplied more reliably and the self-priming time can be shortened as compared with the case where the supply of the priming water and the operation of the pump are started simultaneously. . Therefore, it is possible to further reduce the operation time and the washing time of the pump P, and further extend the life of the pump P. Further, instead of the above-described control contents of FIG. 11, control shown in the following flowchart of FIG. 12 may be performed.

First, the first water supply valve 31 is opened (step S80) (timing D1), and tap water starts to be supplied to the pump P as priming water. After a lapse of a predetermined time Ta, for example, 20 seconds, from the timing D1 (step S81)
(Timing D2), the first water supply valve 31 is closed, and the operation of the pump P is started (Step S82). After a lapse of a predetermined time Te, for example, 5 seconds (Step S83) (timing D7), the first water supply valve 31 is opened (Step S).
84). Here, the predetermined time Te is set as a time when the rotation of the pump P is sufficiently increased. Next, after a lapse of a predetermined time Tf, for example, 9 seconds (step S85) (timing D8), the first water supply valve 31 is closed (step S86). Here, the predetermined time Tf is set as a time capable of compensating for priming water flowing out from the discharge port 51i of the pump P with the operation of the pump P.

Thereafter, bath water is supplied to the set water level (step S87), and the pump P is stopped (step S88) (timing D9). Thus, in the case of the control content shown in FIG. 12, in addition to the effect of FIG.
Since priming water can be supplied after the rotation of the impeller 52 of the pump P is increased, priming water can be supplemented without waste, and tap water can be saved.

The above-mentioned predetermined times Td and Tf are not particularly limited. For example, during operation of the pump P, priming may be continued. In this case, priming water flowing out during the operation of the pump P can be supplemented. 11 and 12 can be applied to both washing and rinsing. That is, the control contents in FIGS. 11 and 12 can be performed instead of steps S1 to S8 in FIG. 6 (in the case of a bath water course). Step S3 in FIG.
Instead of the operations of the pumps P to 36 and the first water supply valve 31,
The operations of FIGS. 11 and 12 may be performed.

In the above embodiment, the first tap water supply channel and a part of the priming water supply channel are shared, but the present invention is not limited to this. For example, both water channels may be formed separately, and only the first water supply valve 31 that opens and closes both water channels may be shared. Further, the whole of the first tap water supply channel and the priming water supply channel may be shared. Others
Various design changes can be made without changing the gist of the present invention.

[0060]

According to the first aspect of the present invention, the supply of priming water during rinsing can be omitted, and tap water supplied as priming water can be saved. According to the invention according to claim 2, in addition to the effect of the invention according to claim 1, when the self-priming pump cannot perform the self-priming operation during rinsing, the self-priming pump can be operated without trouble by supplying priming water. , Can supply bath water.

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, tap water is supplied when bath water is exhausted, and water for washing is provided without any trouble. Can be.

[0062]

[Brief description of the drawings]

FIG. 1 is a sectional front view of a schematic configuration of a fully automatic washing machine according to an embodiment of the present invention.

FIG. 2 is a waterway diagram of a schematic configuration of a water supply mechanism of the fully automatic washing machine in FIG. 1;

FIG. 3 is a sectional side view of a schematic structure of a portion near a first water inlet of the fully automatic washing machine of FIG. 1;

FIG. 4 is a sectional view of a pump of the fully automatic washing machine of FIG. 1;

5 is a schematic view of a water channel of the pump of FIG.
(C) shows the flow of water (→) and air (white →) for each operating condition.

FIG. 6 is a flowchart of control contents of the fully automatic washing machine of FIG. 1;

FIG. 7 is a flowchart showing the rinsing step of FIG. 6 in detail.

FIG. 8 is a first timing chart of the operation based on the control contents of FIGS. 6 and 7.

FIG. 9 is a second timing chart of the operation based on the control contents of FIGS. 6 and 7.

10 is a third example of the operation based on the control contents of FIGS. 6 and 7. FIG.
6 is a timing chart of FIG.

FIG. 11 is a flowchart of control of priming of the fully automatic washing machine of FIG. 1;

FIG. 12 is another flowchart of control of priming of the fully automatic washing machine of FIG. 1;

FIG. 13 is a timing chart of an operation according to the control contents of FIGS. 11 and 12.

[Explanation of symbols]

2 Washing tub P pump (self-priming pump) 31 First water supply valve (priming water supply channel opening / closing means, tap water supply water channel opening / closing means, water channel opening / closing means) 38 Detergent container 41 pipe (priming water supply water path, tap water supply water path) 42 pipe (Priming water supply channel, tap water supply water channel) 43 pipes (tap water supply water channel) 44 pipes (priming water supply water channel)

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masahiko Nakano 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-8-24481 (JP, A) Hei 8-266785 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 33/02 D06F 39/08

Claims (3)

(57) [Claims] 1. A self-priming pump for pumping bath water and supplying the same to a washing tub, a priming water supply channel for supplying tap water to the self-priming pump as a priming water for the self-priming pump, and a priming water supply channel. When supplying water for washing, the priming water supply channel opening / closing means is opened to supply priming water and the self-priming pump is operated, and for supplying water for rinsing, the priming water supply channel opening / closing means is used. A fully automatic washing machine comprising water supply control means for operating a self-priming pump without opening. 2. The fully automatic washing machine according to claim 1, further comprising a detecting means for detecting that water is being supplied to the washing tub when supplying water for rinsing, wherein the water supply controlling means comprises: A fully automatic washing machine characterized by opening a priming water supply channel opening / closing means to supply priming water and to operate a self-priming pump when there is no detection output of the detecting means when supplying water for rinsing. 3. The washing machine according to claim 1 , wherein water is supplied to the washing tub when supplying water for rinsing.
Sensing means for sensing Rukoto, further comprising a tap water supply canals for supplying tap water to the washing tub, and a tap water supply waterway closing means for opening and closing the tap water supply waterway, water supply control means, rinse Fully automatic washing machine for supplying water by opening a tap water supply channel opening / closing means when there is no detection output of the detection means at the time of water supply.