JP2014223130A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine in which bath water can be reliably supplied without causing the clogging of a bath water pump.SOLUTION: A washing machine includes: a washing tub 30 for storing laundry; a water supply valve 6b for receiving tap water from a faucet and supplying it to the washing tub; a pump 9 for sucking up bath water and supplying it to the washing tub; and a water passage 28 for connecting the water supply valve and the discharge port of the pump. In addition, the washing machine includes a control section 13 for opening the water supply valve, supplying tap water into the pump through the water passage, and thereby cleaning the pump.

Description

  The present invention relates to a washing machine that reliably supplies bath water without clogging a bath water pump.

  Recently, due to an increase in environmental awareness, use of remaining hot water in a bathtub for washing in a washing machine is increasing. When using hot water from a bathtub, a pump is usually used, but many fully automatic washing machines have a built-in pump for bath water supply. When using the bath water supply pump with the tip of the hose connected to the water supply port immersed in the water in the bathtub, select a course that uses bath water from many selection courses. The bath water supply pump performs a water supply operation when supplying water for rinsing and for supplying water for rinsing, so as to supply water from the bathtub into the washing tub.

  However, the remaining hot water in the bathtub has lost residual chlorine that has been added to tap water and other water for disinfection, contains organic matter such as sweat and sebum derived from the human body, and the temperature also propagates bacteria. It is 30-40 degreeC suitable for. For this reason, if the bath water is allowed to pass through the bath water pump, it may cause slime and norovirus in the bath water pump. As a result, the flow of water becomes worse, and eventually the inside of the bath water pump becomes clogged so that bath water cannot be sucked.

  In Patent Document 1, the water passage of tap water and the water passage of bath water are partially shared, so that the water passage of bath water is washed with tap water, and the bath water passes from the water passage of bath water. A washing machine that eliminates peculiar slime and norovirus is disclosed.

JP 2007-202739 A

  However, although the method described in Patent Document 1 shows that the water passage of bath water is washed, it does not show how to wash the inside of the bath water pump effectively. Accordingly, there is a problem that slime and norovirus are generated in the bath water supply pump and eventually the inside of the bath water pump is clogged and the bath water cannot be sucked.

  This invention is made | formed in view of such a situation, and this invention aims at providing the washing machine which can perform bath water supply reliably, without clogging a bath water pump. .

  In order to solve the above problems, a washing machine according to the present invention includes a washing tub for storing laundry, a water supply valve for receiving tap water from a tap and supplying water to the washing tub, and suctioning bath water into the washing machine. A pump that supplies the tank, a water passage that connects the water supply valve and the discharge port of the pump, and a controller that opens the water supply valve and passes the tap water into the pump through the water passage. A washing machine comprising:

ADVANTAGE OF THE INVENTION According to this invention, the washing machine which can perform bath water supply reliably without clogging a bath water pump can be provided.
Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments of the invention.

The perspective view which shows an example of the washing machine which concerns on one Embodiment of this invention. The rear view which shows an example of the washing machine which concerns on one Embodiment of this invention. The top view which shows an example of the display operation part of the washing machine which concerns on one Embodiment of this invention. The block diagram which shows an example of the control apparatus of the washing machine which concerns on one Embodiment of this invention. The schematic diagram which shows the flow path of the water of the washing machine which concerns on one Embodiment of this invention. The external appearance perspective view of the bath water pump of the washing machine which concerns on one Embodiment of this invention. The flowchart which shows the process including the bath water pump washing | cleaning process of the washing machine. The flowchart which shows the washing process including the bath water pump washing process of the washing machine. The flowchart which shows the rinse process including the bath water pump washing | cleaning process of the washing machine.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

(Configuration of washing machine according to one embodiment of the present invention)
FIG. 1 is a perspective view showing an example of a washing machine according to an embodiment of the present invention, and FIG. 2 is a rear view.
As shown in FIGS. 1 and 2, the washing machine S according to an embodiment of the present invention includes at least a water supply port to which a display operation unit 1 provided on the front surface of the machine body and a water supply pipe from a water tap are connected. 2, and a bath water supply port 3 to which a hot water hose hung around the bathtub B is installed and a bath water pump 9 are provided.

  FIG. 3 is a plan view illustrating an example of a display operation unit of the washing machine according to the embodiment of the present invention. The display operation unit 1 includes a start / pause switch 51, a washing course switch 52 for setting a washing course, a washing course, and a drying course, a washing course switch 53, a drying course switch 54, an on switch 55, and an off switch. 56, a remaining time display unit 57, a washing time display unit 58, a rinsing time display unit 59, a dehydration time display unit 60, and a drying time display, each of which displays a washing time, the number of times of rinsing, a dehydration time, and a drying time. A portion 61 is provided.

Further, the display operation unit 1 includes a washing switch 62 for setting the washing time, the number of times of rinsing, the dehydration time, and the drying time, a rinse switch 63, a dehydration switch 64, a drying switch 65, and a course display unit 66 for displaying the course with LEDs. Have.
Here, in one embodiment of the washing machine S, the driving course is a maximum of 12 courses, the washing time is 0 to 99 minutes, the number of rinses is 0 to 9 times, the dehydration time is 0 to 9 minutes, and the drying time is 0 to 99 minutes. Can be selected.

FIG. 4 is a block diagram illustrating an example of a control device for a washing machine according to an embodiment of the present invention. The control device of the washing machine S includes a power source 4 and a relay 5 connected to a household outlet, and a microcomputer 13 connected to the power source 4 and controlling the operation of the entire washing machine S.
The control device of the washing machine S includes a main water supply valve 6, a water intake side pump valve 7, a discharge side pump valve 7b, each of which is connected to the relay 5 and connected to the microcomputer 13 via the drive circuit 19. It has a tap water valve 6 b, a drain valve 8, a bath water pump 9, a circulation pump 10, a lid lock 11, and a motor 12.

  Further, the control device of the washing machine S includes a non-volatile storage device 14, a lid lock detection sensor 15, a water level sensor 16, a vibration sensor 17, a rotation sensor 18, and a motor current sensor, each connected to the microcomputer 13. 23, an operation switch 20 on the operation panel, an LED display circuit 21, and a buzzer circuit 22.

Here, the power supply 4 is a power supply circuit that converts AC 100V from a household power supply into a DC voltage and supplies power to each unit.
The relay 5 supplies a power supply voltage to each electromagnetic valve, device, or the like connected to the relay 5 in accordance with a drive signal from the microcomputer 13.
The microcomputer 13 includes a CPU (Central Processing Unit), a storage device such as a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and a control process such as an entire operation according to a computer program stored in the ROM or the like. I do.

The drive circuit 19 is a circuit that supplies a drive current to each electromagnetic valve, device, or the like based on the power supplied from the power supply 4.
The main water supply valve 6 is an electromagnetic valve that controls the supply of tap water or bath water to the outer tub 32.
The water absorption side pump valve 7 and the discharge side pump valve 7 b are electromagnetic valves that control the flow of remaining hot water or the like into the bath water pump 9.

The tap water valve 6 b is an electromagnetic valve that controls the outflow of tap water from the tap and the inflow of remaining hot water from the bath water pump 9.
The drain valve 8 is an electromagnetic valve that controls drainage of washing water and the like in the rotary drum 31 and the outer tub 32.
The bath water pump 9 pumps the remaining hot water from the bathtub B through the hot water hose H and supplies it to the rotating drum 31 or the outer tub 32 of the washing machine S.

The circulation pump 10 circulates the washing water in the rotary drum 31 and the outer tub 32 using the left and right circulation shower nozzles 33 and 34 of the outer tub 32.
The lid lock 11 is a mechanism that electrically locks the lid of the rotating drum 31 that is a washing tub so as not to open during washing.
The motor 12 is a rotor that rotates the rotating drum 31 or the like that is a rotating body in the washing process, the rinsing process, and the drying process.

The nonvolatile storage device 14 is an element that stores a computer program or the like that controls the overall operation of the washing machine S in a storage area.
The lid lock detection sensor 15 is an element that outputs to the microcomputer 13 whether or not the lid of the washing machine S is currently locked by the mechanism of the lid lock 11.

The water level sensor 16 is an element that detects the water level of the washing water or the like in the rotary drum 31 and the outer tub 32 and outputs it to the microcomputer 13.
When the rotary drum 31 is rotated at a high speed during the dehydration process, the vibration sensor 17 stops the dehydration operation when excessive vibration occurs in the outer tank that supports the rotary drum 31. It is an element that detects vibrations such as 32 and outputs it to the microcomputer 13.

The rotation sensor 18 is an element that detects the number of rotations of the motor 12 that is a rotor and outputs it to the microcomputer 13.
The motor current sensor 23 is an element that detects the current value and overcurrent of the motor 12 and outputs the detected current value to the microcomputer 13.

The operation switch 20 on the operation panel is a switch for operating a washing machine such as a start / pause switch 51 and a washing course switch 52 provided in the display operation unit 1.
The LED display circuit 21 is a circuit that drives LED displays such as the washing time display unit 58 and the rinse time display unit 59 of the display operation unit 1 or the LEDs of the operation display unit 66.
The buzzer circuit 22 is a circuit that generates a warning sound to notify the user of the start or end of the washing process or the occurrence of an error.

(Water flow path of washing machine)
FIG. 5 is a schematic view showing a water flow path of the washing machine according to the embodiment of the present invention.
In the washing machine S, as shown in FIG. 5, the water supply port 2 for connecting the water supply hose from the water tap is connected to the main water supply valve 6 and the water supply valves 24 and 25 through the water conduit 26. The tap water valve 6b is provided in the middle.

Similarly, a bath water supply port 3 for connecting a hot water removal hose for the remaining hot water of the bath is connected to a main water supply valve 6 and water supply valves 24 and 25 through a water conduit 26, and in the middle A water absorption side pump valve 7, a bath water pump 9, and a discharge side pump valve 7b are provided.
Here, the water supply port 2 is a part to which a water supply pipe from a water tap is connected. The bath water supply port 3 is a portion to which the hot water hose H is connected, and the hot water hose H is routed to the bathtub B and immersed in the water in the bathtub B.

  6 is an external perspective view of the bath water pump 9. The bath water pump 9 absorbs bath water from the water inlet 9a and discharges the bath water absorbed from the outlet 9b as shown in FIG. It ’s like that. The bath water pump which is one of the embodiments of the present invention injects tap water from the discharge port 9b to clean the inside.

  The water conduit 26 connects the water supply port 2, the tap water valve 6 b, the water supply valve 24, the water supply valve 25, and the water supply valve 38, and at the same time, the bath water supply port 3 and the water intake side pump valve 7. The bath water pump 9, the discharge side pump valve 7b, the main water supply valve 6, the water supply valve 24, the water supply valve 25, and the water supply valve 38 are connected.

  The first main water supply valve 6 is an electromagnetic valve that is opened in a washing process and a rinsing process, which are detailed processes in the washing process, and is connected to the outer tub 32 via the connection hose 27, the detergent container 29, and the connection hose 30. Connected. Thereby, by opening the main water supply valve 6, the tap water supplied from the water supply port 2 or the bath water supplied from the bath water supply port 3 together with the detergent put into the detergent container 29 is provided on the inner wall surface of the outer tub 32. Flows along.

  The second water supply valve 24 is an electromagnetic valve that is opened in a shower rinsing process, which is a detailed process in the washing process, and is connected to a shower pipe disposed on the back side of a front cover (not shown) via a connection hose 28. Thus, water can be sprayed into the rotating drum 31.

  The third water supply valve 25 is an electromagnetic valve that is temporarily opened at the end of the drying process, and is connected to the drain pipe 40. Thereby, the tap water supplied from the water supply port 2 is supplied to the drain trap 42 by opening the feed valve 25, and the function of the drain trap 42 is recovered.

  The circulation pump 10 includes a circulation pump motor inside, and the drain port on the bottom surface of the outer tub 32 is connected to the suction port of the circulation pump 10 via the connection hose 36. In addition, one of the two discharge ports of the circulation pump 10 is connected to the left and right circulation shower nozzles 33 and 34 of the outer tub 32 via the water conduit 35. The other of the two outlets of the circulation pump 10 is connected to the inlet of the outer tub 32 via the water conduit 35b.

  The suction port of the circulation pump 10 is connected to the drain port of the outer tub 32 via the connection hose 36. A natural drainage port of the circulation pump 10 is connected to the drainage valve 8 via a connection hose 37. The other end of the drain valve 8 is connected to a drain hose 40 and a drain trap 42 through a drain pipe.

  Further, the water supply valve 38 is connected to a circulation duct (return air passage) 39 via a pipeline, and the circulation duct (return air passage) 39 is connected to a drain hose 40 and a drain trap via a pipeline 41. 47.

  By opening the drain valve 8, the water in the outer tub 32 is drained outside the machine from the drain port of the outer tub 32 through the suction port of the circulation pump 10, the natural drain port, and the drain valve 8. In a state where the drain valve 8 is closed, the circulation pump 10 sucks water (circulated water) through the connection hose 36 and discharges the circulating water through the water conduit 35b. Thereby, in the initial stage of the first water supply in the washing process, the detergent and the water can be mixed, and the water in the rotating drum 31 can be circulated so as to dissolve the detergent well in the water supply.

  Thereafter, in a state where the drain valve 8 is closed, the circulation pump 10 sucks water (circulated water) from the suction port, and discharges the circulating water through the water conduit 35b. The circulation pump 10 can spray the detergent through the water in the rotating drum 31 through the water conduit 35 and the circulation shower nozzles 33 and 34 through water that is well mixed with the detergent.

(Washing treatment of bath water pump in washing machine according to one embodiment of the present invention)
Next, in the washing machine S having the above-described configuration, processing steps including a bath water pump cleaning process, which is a feature of one embodiment of the present invention, will be described with reference to the drawings. FIG. 7 is a flowchart showing a processing process including a bath water pump cleaning process of the washing machine, FIG. 8 is a flowchart showing a cleaning process including a bath water pump cleaning process, and FIG. 9 is a rinse including a bath water pump cleaning process. It is a flowchart which shows a process.

  As described above, in the interior of the bath water pump 9 as well as the hot water take-off hose H of the bath water, if it continues to be used, the slime and norovirus will occur and eventually the bath water pump 9 will be clogged. Can't breathe bath water. In this embodiment, even if the user does not perform any special operation, the tap water is passed through the bath water pump 9 to clean the inside by the automatic operation of the microcomputer 13 as the control unit. Such a problem is solved.

  As shown in FIG. 7, the microcomputer 13 which is a control unit of the washing machine S confirms the set state or initial setting after the power is turned on (step S11), and according to the confirmed setting, the washing machine Are displayed on the course display unit 66 of the display operation unit 1. Next, the microcomputer 13 sets the user's washing course in accordance with the operation of the washing course switch 52 of the display operation unit 1 (step S12). When the microcomputer 13 detects the pressing of the start switch, the microcomputer 13 executes the set washing course according to the set washing course, the washing time, the number of times of rinsing, the dehydration time, the drying time, and whether or not bath water is used (step S13). . The microcomputer 13 appropriately performs a washing process including a bath water pump washing process (step S14).

That is, as shown in the flowchart of FIG. 8, the microcomputer 13 determines the initial water level using the water level sensor 16 in the washing process (step S31), and water must be in the rotating drum 31 and the outer tub 32. For example, the weight of the laundry is sensed to determine the amount of detergent and the amount of water (step S32). If there is a sufficient water level in the rotating drum 31 and the outer tub 32 in step S31, the microcomputer 13 performs washing agitation in step S37 without sensing the weight of the laundry to determine the amount of detergent and the like. Go to the pattern.
The microcomputer 13 determines the amount of water and the amount of detergent necessary for washing based on the sensed result, and performs washing water supply in the tank by the amount of the water (step S33).

  When the microcomputer 13 determines that water supply with bath water is set before operation (step S34), the water intake side pump valve 7 and the discharge side pump valve 7b are opened, the tap water valve 6b is closed, and the main water supply valve is opened. 6 is opened, the bath water pump 9 is activated, and water is supplied to the rotating drum 31 and the outer tub 32 using the bath water (step S35).

  If the microcomputer 13 determines in step S34 that the bath water supply is not set, the microcomputer 13 closes the water intake side pump valve 7 and the discharge side pump valve 7b, opens the tap water valve 6b, and opens the main water supply valve 6. The tap water is supplied to the rotary drum 31 and the outer tub 32 without starting the bath water pump 9 (step S36).

  When the microcomputer 13 determines based on the signal from the water level sensor 16 that the necessary amount of water has accumulated in the rotary drum 31 and the outer tub 32, the microcomputer 13 closes the tap water valve 6b and the main water supply valve 6 that are opened at the time of water supply, The motor 12 is controlled by controlling the drive circuit 19, and the washing stirring pattern is executed (step S37).

  When the microcomputer 13 determines that the stirring of the washing has been completed, the microcomputer 13 determines whether or not the current bath water supply is a final water supply setting (for example, bath water is used in the washing process without a rinsing process) (step S38). . When the microcomputer 13 determines that the current bath water supply is the final water supply setting, the microcomputer 13 closes the water intake side pump valve 7, opens the discharge side pump valve 7 b, and taps the tap water valve 6 b into the bath water pump 9. Open for 10-15 seconds (for example, for 10 to 15 seconds), while running tap water through the bath water pump 9, the bath water pump 9 is driven at low speed by rotating the pulse so that the tap water does not flow back to the tap. (Step S39). Thereby, the slime etc. which originate in the bath water in the bath water pump 9 are washed.

At this time, the microcomputer 13 may open the water absorption side pump valve 7. By opening the water intake side pump valve 7, the tap water is distributed to the bath water supply port 3 and the hot water hose H where the water flow is poor, and the occurrence of slime and norovirus is suppressed, and the bath water pump Prevent clogging inside.
When the microcomputer 13 cleans the bath water pump 9 for a certain time, the microcomputer 13 proceeds to the rinsing process.
If the microcomputer 13 determines in step S38 that the current bath water supply is not the final water supply setting, the microcomputer 13 ends the washing process without washing the bath water pump 9 (step S40), and FIG. The process proceeds to the rinsing process of step S15.

In step S38 and step S39, the specification may be such that the bath water pump 9 is cleaned for each bath water supply instead of the specification for cleaning the bath water pump 9 only for the final bath water supply.
By cleaning the bath water pump 9 for each bath water supply, the cleaning effect of the bath water pump 9 can be further improved.
Next, the microcomputer 13 appropriately performs a rinsing process including a bath water pump cleaning process (step S15).

  That is, as shown in the flowchart of FIG. 9, the microcomputer 13 opens the drain valve 8 in the rinsing process, thereby draining the water accumulated in the rotating drum 31 and the outer tub 32 in the washing process. When the microcomputer 13 determines that there is no water in the rotating drum 31 and the outer tub 32 based on the signal from the water level sensor 16, the microcomputer 13 controls the motor 12 by controlling the drive circuit 19, and the rotating drum 31 is controlled. Dehydration is performed by rotating (step S51).

  After dehydration, the microcomputer 13 again supplies water to the rotating drum 31 and the outer tub 32 (step S52). At this time, as in the washing step, it is determined whether or not water supply with bath water is set before operation. Judgment is made (step S53). When the microcomputer 13 determines that water supply with bath water is set before operation, the microcomputer 13 opens the water intake side pump valve 7 and the discharge side pump valve 7b, closes the tap water valve 6b, opens the main water supply valve 6, The bath water pump 9 is activated to supply water to the rotary drum 31 and the outer tub 32 using the bath water (step S54).

  If the microcomputer 13 determines in step S53 that water supply with bath water is not set, the water intake side pump valve 7 and the discharge side pump valve 7b are closed, the tap water valve 6b is opened, and the main water supply valve 6 is opened. The tap water is supplied to the rotating drum 31 and the outer tub 32 without starting the bath water pump 9 (step S55).

  When the microcomputer 13 determines based on a signal from the water level sensor 16 that the necessary amount of water has accumulated in the rotating drum 31 and the outer tub 32, the tap water valve 6b opened when the tap water is supplied or when the bath water is supplied. The water absorption side pump valve 7 and the discharge side pump valve 7b (in the case of bath water) opened are closed, the main water supply valve 6 is closed, the motor 12 is controlled by controlling the drive circuit 19, and the rinsing agitation pattern is set. Execute (step S56).

When the microcomputer 13 determines that the rinsing agitation has been completed, the microcomputer 13 determines whether or not the current bath water supply is the final water supply setting (for example, the last water supply set number of times of rinsing water supply). S57).
When the microcomputer 13 determines that the current bath water supply is the final water supply setting, the microcomputer 13 closes the water intake side pump valve 7, opens the discharge side pump valve 7 b, and taps the tap water valve 6 b into the bath water pump 9. Open for 10-15 seconds (for example, for 10 to 15 seconds), while running tap water through the bath water pump 9, the bath water pump 9 is driven at low speed by rotating the pulse so that the tap water does not flow back to the tap. (Step S58). When the microcomputer 13 cleans the bath water pump 9 for a certain period of time, the rinsing process is terminated (step S59).

  Thereby, the slime etc. which originate in the bath water in the bath water pump 9 are washed. At this time, the water absorption side pump valve 7 may be opened as in the case of the washing step. By opening the water intake side pump valve 7, the tap water is distributed to the vicinity of the main water supply valve 6 of the bath water supply port 3, the hot water hose H, and the water conduit 26 where the water flow is bad, Occurrence can be suppressed and clogging in the bath water pump can be suppressed.

If the microcomputer 13 determines in step S57 that the current bath water supply is not the final water supply setting, the microcomputer 13 proceeds to the next step without cleaning the bath water pump 9.
However, as described above, in step S57, the specification may be such that the bath water pump 9 is cleaned for each bath water supply instead of the specification for cleaning the bath water pump 9 only for the final bath water supply.
By cleaning the bath water pump 9 for each bath water supply, the cleaning effect of the bath water pump 9 can be further improved.

The microcomputer 13 executes the dehydration process according to the course set before the operation after the rinsing process is completed (step S16).
Moreover, the microcomputer 13 performs a drying process according to the course set before the driving | operation after completion | finish of a spin-drying | dehydration process (step S17). The microcomputer 13 automatically turns off the power after the operation is completed.

(Effect of cleaning treatment of bath water pump according to one embodiment of the present invention)
The washing machine S according to an embodiment of the present invention does not require any special operation of the user by performing the above-described washing process of the bath water pump, and the bath water pump has a slime or norovirus derived from the bath water. Can be effectively washed with tap water. Thereby, the washing machine which can perform bath water supply reliably without clogging a bath water pump is provided.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Also, a part of the configuration of one embodiment can be replaced with the configuration of the other embodiment, and the configuration of the other embodiment can be added to the configuration of the one embodiment.

For example, in the embodiment described above, cleaning of the bath water pump 9 is only bath water final water supply, but the bath water pump 9 may be cleaned for each bath water supply.
By carrying out like this, the washing | cleaning effect can be improved further than the case where the bath water pump 9 is wash | cleaned only once.

In the embodiment described above, the bath water pump 9 is automatically controlled by the microcomputer 13 when bath water supply is executed without the user's instruction for cleaning. However, the specification may be that the bath water pump 9 can be cleaned by operating an arbitrary switch of the display operation unit 1 when the user wants to clean.
Thereby, the bath water pump 9 can be more effectively cleaned at any timing of the user.

Further, in the embodiment described above, the cleaning timing, frequency, cleaning time, and the like of the bath water pump 9 are given in advance by setting values in the program of the nonvolatile storage device 14.
However, the specification may be such that the set values of the program such as the cleaning timing, frequency, and cleaning time of the bath water pump 9 can be changed by operating any switch of the display operation unit 1.
Thereby, the more effective cleaning of the bath water pump 9 suitable for the state of the user's bath water or the like can be performed.

DESCRIPTION OF SYMBOLS S Washing machine 1 Display operation part 2 Water supply port 3 Bath water supply port 5 Relay 6 Main water supply valve 6b Tap water valve 7 Water absorption side pump valve 7b Discharge side pump valve 8 Drain valve 9 Bath water pump 10 Circulation pump 11 Cover lock 12 Motor 13 Microcomputer (control unit)
14 Nonvolatile memory device 15 Lid lock detection sensor 16 Water level sensor 17 Vibration sensor 18 Rotation sensor 20 Operation switch 21 LED display circuit 22 Buzzer circuit 23 Motor current sensor 31 Rotating drum (washing tub)
32 Outer tub (washing tub)
33 Circulating shower nozzle 34 Circulating shower nozzle 35 Water conduit 35b Water conduit 36 Connection hose 37 Connection hose 38 Water supply valve 39 Circulation duct (return air passage, drying device)
40 Drain hose 41 Pipe line

Claims (7)

A laundry tub for storing laundry;
A water supply valve for receiving tap water from a water tap and supplying water to the washing tub;
A pump that sucks up the bath water and supplies it to the washing tub;
A water passage connecting the water supply valve and the discharge port of the pump;
A control unit that opens the water supply valve and passes tap water into the pump through the water passage;
A washing machine comprising: The washing machine according to claim 1, wherein
The said control part performs the water flow to the said pump of the said tap water at the time of completion | finish of the last bath water supply to the said washing tub, The washing machine characterized by the above-mentioned. The washing machine according to claim 1, wherein
The control unit drives the pump at a speed that does not cause the tap water to flow back to the tap while the tap water is passed through the pump. A washing machine according to claim 3,
The said control part makes the said pump drive the pulse while performing the water flow to the said pump of the said tap water, The washing machine characterized by the above-mentioned. The washing machine according to claim 1, wherein
The water intake port of the pump further has a water absorption side pump valve,
The said control part is controlled to close the said water absorption side pump valve, while passing the said tap water in the said pump, The washing machine characterized by the above-mentioned. The washing machine according to claim 1, wherein
It further has a discharge side pump valve between the discharge port of the pump and the water flow path,
The said control part is controlled to open the said discharge side pump valve, while passing the said tap water in the said pump, The washing machine characterized by the above-mentioned. The washing machine according to claim 1, wherein
It further has a washing tub side water supply valve between the water passage and the washing tub,
The said control part is controlled to close the said washing tank side water supply valve, while passing the said tap water in the said pump, The washing machine characterized by the above-mentioned.

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