JP4998517B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine including a water supply hose and an electromagnetic water supply valve.

  Conventionally, in this type of washing machine, the pressure inside the connected water supply hose is constantly or transiently high, which adversely affects other configurations, or the water supply hose is bent or frozen. As a configuration for eliminating problems during water supply, such as causing damage, a configuration has been proposed in which the pressure in the water supply hose is reduced by instantaneous opening and closing control of an electromagnetic water supply valve (see, for example, Patent Document 1).

  Moreover, after monitoring the pressure in a water supply hose and confirming that there is no abnormality, there are some which perform water supply control (for example, refer patent document 2).

  6 is a longitudinal sectional view of a conventional washing machine described in Patent Document 1, FIG. 7 is a block diagram of a control system of the washing machine, and FIG. 8 is a time chart of control processing of the washing machine. Show.

  As shown in FIG. 6, an upper cover 9, a front panel 10, and a back panel 11 are arranged above the washing machine body 1, and a power switch is placed inside the front panel box 12 formed between the upper cover 9 and the front panel 10. 13 and a control device 16 including an input switch group is incorporated.

  Inside the back panel box 17 configured between the upper cover 9 and the back panel 11, the water inlet side is connected to the water supply port 18 of the electromagnetic water supply valve, and the soft water outlet side from which ions are removed from the tap water is connected to the water supply port 19. A connected ion removing device 21 is incorporated. The water connection port 18 of the washing machine is connected to a water tap 31 through a water supply hose 30.

  In the block diagram of FIG. 7, the control device 16 includes a microcomputer 16a and a load driving device 16b, and the microcomputer 16a controls water supply, air bleeding, washing, dehydration, and the like.

  The microcomputer 16a of the control device 16 sequentially controls the air bleeding, washing process, rinsing process and dewatering process as shown in the time chart of FIG. 8, and at the beginning of the washing preparation process or the washing process, the electromagnetic water supply valve is instantly operated. By performing the opening operation, the “air bleeding” is performed by weakening the discharge force of the compressed air in the water supply hose 30 and exhausting the air, so that the inside of the water supply hose 30 becomes a high pressure and enters the ion removing device 21. The discharge of high-pressure compressed air is reduced, and adverse effects on the ion removing device 21 and the like are prevented.

  FIG. 9 shows a partial longitudinal cross-sectional view of the conventional washing machine shown in Patent Document 2, with a water supply side water supply valve 72 on the water tap 71 side which is one end of a water supply hose 73 of the washing machine, and a main body on the other end. A side water supply valve 76 is provided, and a water pressure sensor 74 is provided on the water supply hose 73.

  After the water supply side water supply valve 72 is opened, only when a predetermined water pressure is obtained by the water pressure sensor 74, the control circuit 75 determines that the main body side water supply valve 76 is opened and the water pressure sensor 74 obtains the predetermined water pressure. When there is not, the control circuit 75 determines that “there is an abnormality” and closes the water supply side water supply valve 72 to display an abnormality on the display unit 77.

JP 2002-011284 A JP-A-4-352998

  However, in the configuration of Patent Document 1, the compressed air compressed by the water pressure generated in the water supply hose 30 when the water tap 31 is opened prior to water supply escapes in advance to prevent adverse effects on the ion removal device 21 and the like. However, since the water pressure is applied to the water supply hose 30 when the water tap 31 is opened, the water pressure is always applied when the water tap is opened even when the washing machine is stopped. When water supply pressure is abnormally high, excessive pressure is applied due to bending and freezing, and the water supply hose is damaged.

  Moreover, in the structure of the said patent document 2, since a water supply valve is each provided in the water tap side and the washing machine side, and a pressure is detected with the water pressure sensor 74 provided in the water supply hose 73, when the water supply hose 73 is damaged It is effective for detection. However, the water supply side water supply valve 72 is opened first, and water having the same pressure as the water supply pressure may remain in the water supply hose 73 in some cases.

  Therefore, in a case where the water supply pressure is high, excessive pressure is applied by bending or freezing, and there is a problem that the water supply hose 73 is damaged. In addition, since the water supply valve 72 on the water tap side is opened first, there is a problem that if there is air inside, the compression of the air is promoted and the pressure inside the hose is increased by the water pressure.

  As described above, the conventional configuration has a problem that a high pressure state occurs in the water supply hose and the water supply hose is damaged.

  The present invention solves the above-mentioned conventional problems, and is configured to connect two electromagnetic water supply valves arranged on the faucet side of the water supply and the washing machine main body side with a water supply hose. An object of the present invention is to provide a washing machine that reduces the pressure in the water supply hose by opening and closing the two electromagnetic water supply valves and prevents the water supply hose from being damaged.

  In order to solve the above-mentioned conventional problems, the washing machine of the present invention includes a faucet side electromagnetic water supply valve arranged to be connected to a water faucet, a main body side electromagnetic water supply valve arranged on the washing machine main body side, A water supply hose connecting the faucet side electromagnetic water supply valve and the main body side electromagnetic water supply valve; and a washing tub connected to the main body side electromagnetic water supply valve; The main body side electromagnetic water supply valve is configured to be closed after the first predetermined time has elapsed.

  As a result, when the electromagnetic water supply valve is closed, the inside of the water supply hose can be in a state of pressure lower than the water supply pressure, the water supply hose can be prevented from being damaged, and a transient connection to the member connected to the main body side electromagnetic water supply valve can be achieved. The adverse effects caused by the pressure rise phenomenon can also be prevented.

  In the washing machine of the present invention, even when the water supply pressure is high, the pressure of water remaining in the water supply hose can be lower than the water supply pressure, and damage to the water supply hose and the piping structure can be prevented.

The schematic diagram regarding the water supply part of the washing machine in Embodiment 1 of this invention Operation flow diagram of water supply stop of the washing machine Operation flow diagram of water supply start of washing machine in embodiment 2 of the present invention Configuration diagram of washing machine in Embodiment 3 of the present invention Operation flow diagram of water supply start of the washing machine Longitudinal sectional view of a conventional washing machine shown in Patent Document 1 Block diagram of the washing machine control system Time chart of control processing of the washing machine Partial longitudinal sectional view of a conventional washing machine shown in Patent Document 2

  1st invention is the faucet side electromagnetic water supply valve arrange | positioned so that it may connect to the faucet of a water supply, the main body side electromagnetic water supply valve arrange | positioned at the washing machine main body side, the said faucet side electromagnetic water supply valve, and the said main body side electromagnetic wave A water supply hose connecting between the water supply valves, and a washing tub connected to the main body side electromagnetic water supply valve, and a water supply stop method is performed by first closing the faucet side electromagnetic water supply valve and closing the first predetermined time. After the elapse of time, the main body side electromagnetic water supply valve is closed so that the upstream side faucet side electromagnetic water supply valve is closed and then the downstream main body side electromagnetic water supply valve is closed. The pressure rise can be prevented, and the adverse effect caused by the transient pressure rise phenomenon on the member connected to the main body side electromagnetic water supply valve can also be prevented.

  2nd invention is the faucet side electromagnetic water supply valve arrange | positioned so that it may connect to the faucet of a water supply, the main body side electromagnetic water supply valve arrange | positioned at the washing machine main body side, the said faucet side electromagnetic water supply valve, and the said main body side electromagnetic wave A water supply hose connecting between the water supply valves and a washing tub connected to the main body side electromagnetic water supply valve, and a water supply start method is performed by opening the main body side electromagnetic water supply valve in advance, and a second predetermined time Since the faucet side electromagnetic water supply valve is opened after the elapse of time, the upstream side electromagnetic water supply valve is opened and then the upstream side electromagnetic water supply valve is opened. In addition, it is possible to prevent the adverse effect caused by the transient pressure rise phenomenon on the member connected to the main body side electromagnetic water supply valve.

  According to a third aspect of the invention, the main body side electromagnetic water supply valve of the first or second invention is a multiple electromagnetic water supply valve capable of selecting two or more flow paths, and at least one of the main body side electromagnetic water supply valves. Is configured to directly supply water to the washing tub, and at least one other chain is configured to supply water to the detergent container, and the washing tub side of the main body side electromagnetic water supply valve is opened in advance, The faucet side electromagnetic water supply valve is opened after a lapse of time, the detergent side of the main body side electromagnetic water supply valve is opened after a fourth predetermined time, and the main body side electromagnetic water supply valve is opened after a fifth predetermined time has elapsed. By configuring the electromagnetic water supply valve on the detergent side to close, it is possible to eliminate the effect of air remaining in the water supply hose, so that high-pressure compressed air is discharged into the detergent case and the powder detergent is sprinkled abnormally. It can prevent problems such as damage to the structure. .

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic diagram relating to a water supply unit of the washing machine according to the first embodiment of the present invention, and FIG. 2 shows an operation flow chart of the water supply stop of the washing machine.

  In FIG. 1, a faucet side electromagnetic water supply valve 101 is connected to a water tap 104, and a main body side electromagnetic water supply valve 102 is arranged on the washing machine main body 100 side. The faucet side electromagnetic water supply valve 101 and the main body side electromagnetic water supply valve 102 are connected by a water supply hose 103. Further, an in-machine hose 107 is connected to the main body side electromagnetic water supply valve 102 so as to supply water to the washing tub 106.

  In the operation flow diagram of FIG. 2, control when water supply is stopped will be described.

  When a water supply stop signal is transmitted from the control device in step S1, if the faucet side electromagnetic water supply valve 101 is open in step S2 and the main body electromagnetic water supply valve 102 is open in step S3, the control device is in step S4. The faucet side electromagnetic water supply valve 101 is first controlled to close. Thereafter, after a predetermined time specified by the stabilization time 1 in step S5, the water supply stop control is completed by closing the main body side electromagnetic water supply valve 102 in step S6 (step S7).

  If the faucet side electromagnetic water supply valve 101 is open (Yes) and the main body side electromagnetic water supply valve 102 is closed in step S3 (No), after the main body side electromagnetic water supply valve 102 is once opened in step S8, The process proceeds to the closing of the faucet side electromagnetic water supply valve 101 in step S4.

  Further, if the faucet side electromagnetic water supply valve 101 is closed (No) in step S2 and the main body side electromagnetic water supply valve 102 is closed (No) in step S9, the main body side electromagnetic water supply valve 102 is once turned on in step S10. After opening, after a fixed time specified by the stabilization time 1 in step S5, the water supply stop control is completed by closing the main body side electromagnetic water supply valve 102 in step S6 (step S7).

  Further, if the main body side electromagnetic water supply valve 102 is open (Yes) in step S9, the process proceeds immediately to the passage of a fixed time defined by the stabilization time 1 in step S5, and the main body side electromagnetic water supply valve 102 is closed in step S6. Thus, the water supply stop control is completed (step S7).

  Here, the stabilization time 1 is a delay time in which the water remaining in the water supply hose 103 flows to the washing machine side through the main body side electromagnetic water supply valve 102 after the faucet side electromagnetic water supply valve 101 is closed for a certain amount or more. Is a first predetermined time defined by a control device or the like (not shown).

  As shown in FIG. 1, the water supply hose has a U-shape, and since there are various angles depending on the installation state, water may remain in the water supply hose no matter how long the stabilization time 1 is increased. However, even if some water remains, the pressure is lower than the water pressure, so the risk of hose breakage during bending or freezing is reduced.

  Note that the stabilization time 1 may be set so that a waiting time of a certain time is provided in the program and the two electromagnetic water supply valves are sequentially closed. In the program, the two electromagnetic water supply valves are simultaneously closed. A hardware configuration in which the faucet-side electromagnetic water supply valve 101 is closed early and the main body-side electromagnetic water supply valve 102 is closed with a delay by using different closing speeds may be used.

  The above program method cannot cope with unsteady conditions such as when power is suddenly cut off due to a power outage or disconnection from the outlet. However, if the characteristics of the hardware configuration of the latter electromagnetic water supply valve are applied, Can also be supported.

  By controlling the water supply stop with the above operation flow, the faucet side electromagnetic water supply valve 101 is closed after the main body side electromagnetic water supply valve 102 is always opened first. Does not remain in the water supply hose, and the pressure in the water supply hose can be lowered.

  Further, when the water supply stop signal is transmitted, the downstream side main body side electromagnetic water supply valve 101 is closed after the upstream side faucet side electromagnetic water supply valve 101 is closed, except for the state where the faucet side electromagnetic water supply valve 101 is already closed. Since 102 is closed, it is possible to prevent adverse effects caused by a transient pressure rise phenomenon on the members connected to the main body side electromagnetic water supply valve 102.

(Embodiment 2)
FIG. 3 shows an operation flow for starting water supply in the washing machine according to the second embodiment of the present invention. In addition, the schematic diagram regarding the water supply part of a washing machine is the same as FIG. 1 of Embodiment 2, and description is abbreviate | omitted.

  The case where water supply is started in the operation | movement flowchart of FIG. 3 is demonstrated.

  When a water supply start signal is transmitted from the control device in step S11, if both the main body side electromagnetic water supply valve 102 is closed in step S12 and the faucet side electromagnetic water supply valve 101 is closed in step S13, the control device is in step S14. First, the main body side electromagnetic water supply valve 102 is controlled to be opened. Then, after a fixed time specified by the stabilization time 2 in step S15, the faucet side electromagnetic water supply valve 101 is opened in step S16.

  Further, when the main body side electromagnetic water supply valve 102 is closed in step S12 and the faucet side electromagnetic water supply valve 101 is opened in step S13, the faucet side electromagnetic water supply valve 101 is once closed in step 18 and then to step 14. The main body side electromagnetic water supply valve 102 is opened, and then the water supply start operation is completed by opening the faucet side electromagnetic water supply valve 101 in step S16 after the elapse of a fixed time defined by the stabilization time 2 in step S15 (step S16). S17).

  Further, when the main body side electromagnetic water supply valve 102 is opened (No) in step S12, the faucet side electromagnetic water supply valve 101 in step S16 is opened after a lapse of a fixed time defined by the stabilization time 2 in step S15.

  The stabilization time 2 means that when the main body side electromagnetic water supply valve 102 is opened from the state in which the main body side electromagnetic water supply valve 102 and the faucet side electromagnetic water supply valve 101 are both closed, the water and air in the water supply hose 103 are removed. The state is a time for mixing and stabilizing with the subsequent stage of the main body side electromagnetic water supply valve 102, and is a second predetermined time defined by a control device or the like (not shown).

  By controlling the start of water supply with the operation flow as described above, the faucet-side electromagnetic water supply valve 101 is opened after the main body-side electromagnetic water supply valve 102 is always opened first, so that water that has been directly subjected to water pressure can be removed. The pressure in the water supply hose 103 can be lowered.

  Further, since the upstream side electromagnetic water supply valve 101 is opened after the downstream side main body side electromagnetic water supply valve 102 is opened, a transient pressure rise phenomenon to the member connected to the main body side electromagnetic water supply valve 102 is brought about. Adverse effects can also be prevented.

  The water supply stop method shown in the first embodiment and the water supply start method shown in the second embodiment may be adopted for controlling the washing machine as independent configurations, but by adopting both at the same time. The safety of the water supply hose can be more effective.

(Embodiment 3)
FIG. 4 is a schematic diagram relating to the water supply section of the washing machine according to Embodiment 4 of the present invention, and FIG. 5 shows an operation flow chart of the start of water supply to the detergent container of the washing machine.

  4, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 4, the main body side electromagnetic water supply valve 102 has a two-pipe structure, the inflow side connected to the water supply hose 103 has one connection port, and the outflow side directly to the washing tub 106 via the washing tub water supply hose 110. The water supply side is a washing tank side electromagnetic water supply valve 102a, and the detergent supply side electromagnetic water supply valve 102b is configured to supply water while dissolving the detergent in the washing tank 106 via the detergent container 105. .

  In the configuration shown in FIG. 4, detergents such as powder detergent, liquid detergent, and softener are put in the detergent container 105, and the detergent inlet-side electromagnetic water supply valve 102 b is operated in this detergent container 105, and the hose 108 is connected to the detergent container 105. After supplying water and diluting and dissolving, the detergent is supplied into the washing tub 106 through the detergent liquid supply pipe 109. A configuration for preventing the occurrence of problems such as abnormal discharge of powder detergent, for example, by discharging high-pressure compressed air to the detergent container 105 will be described below with reference to FIG.

  In the operation flow diagram of FIG. 5, when a water supply start signal is transmitted from the control device in step S31, the faucet side electromagnetic water supply valve 101 in step S32, the detergent inlet side electromagnetic water supply valve 102b in step 33, and In step S34, the washing tub side electromagnetic water supply valve 102a is closed, and then the washing tub side electromagnetic water supply valve 102a is opened in step S35, thereby reducing the pressure in the water supply hose 103 for washing in the washing tub 106. Make it ready for water supply.

  Note that if the faucet side electromagnetic water supply valve 101 is not closed in step 42, the faucet side electromagnetic water supply valve 101 is closed, and if the detergent inlet side electromagnetic water supply valve 102b is not closed in step 43, it is also closed.

  Thereafter, after a predetermined time stipulated in the stabilization time 3 has elapsed in step S36, the faucet side electromagnetic water supply valve 101 is opened in step S37 to supply water to the washing tub 106, and in step 38, the stabilization time 4 is set. After the elapse of time, the detergent inlet side electromagnetic water supply valve 102b is opened in step S39, water is supplied to the detergent container 105, the detergent is supplied to the washing tub 106 while dissolving the internal detergent, and the stabilization time is further determined in step S40. After 5 has elapsed, the detergent inlet side electromagnetic water supply valve 102b is closed in step S41 to complete the water supply to the detergent container.

  Here, the stabilization time 3 is a stabilization time for the pressure in the water supply hose 103 to be saturated when the washing tub side electromagnetic valve 102a is opened, and is defined by a control device (not shown). A third predetermined time.

  In addition, the stabilization time 4 is stable until the faucet side electromagnetic water supply valve 101 is opened and then the air inside the water supply hose 103 is discharged to the washing tub side electromagnetic water supply valve 102a side and the water supply hose 103 is filled with water. Time is a fourth predetermined time defined by a control device or the like (not shown), and the stable time 5 switches the flow direction from the washing tank side electromagnetic water supply valve 102a to the detergent inlet side electromagnetic water supply valve 102b side. And a stable time necessary for completing the dissolution of the detergent or the like in the detergent container 105, which is a fifth predetermined time defined by a control device or the like (not shown).

  As described above, by supplying water to the detergent container according to the operation flow shown in FIG. 5, the influence of air remaining in the water supply hose can be eliminated, so that high-pressure compressed air is discharged into the detergent container. It is possible to prevent problems such as abnormally scattering the powder detergent or damaging the structure.

  As described above, since the electric washing machine according to the present invention can set the pressure of water remaining in the water supply hose to a pressure lower than the tap water pressure, the washing machine that controls the water supply with the electromagnetic water supply valve, etc. It is useful for applications.

DESCRIPTION OF SYMBOLS 100 Washing machine main body 101 Faucet side electromagnetic water supply valve 102 Main body side electromagnetic water supply valve 102a Washing tank side electromagnetic water supply valve 102b Detergent incoming side electromagnetic water supply valve 103 Water supply hose 104 Water tap 105 Detergent container 106 Washing tank

Claims (3)

A faucet side electromagnetic water supply valve arranged to be connected to a water faucet, a main body side electromagnetic water supply valve arranged on the washing machine main body side, and a connection between the faucet side electromagnetic water supply valve and the main body side electromagnetic water supply valve. A water supply hose and a washing tub connected to the main body side electromagnetic water supply valve are connected to the main body side electromagnetic water supply valve, and the water supply stop method closes the faucet side electromagnetic water supply valve in advance, and after the first predetermined time has passed, the main body side A washing machine configured to close the electromagnetic water supply valve. A faucet side electromagnetic water supply valve arranged to be connected to a water faucet, a main body side electromagnetic water supply valve arranged on the washing machine main body side, and a connection between the faucet side electromagnetic water supply valve and the main body side electromagnetic water supply valve. A water supply hose and a washing tub connected to the main body-side electromagnetic water supply valve, and the water supply start method is to open the main body-side electromagnetic water supply valve in advance, and after the elapse of a second predetermined time, A washing machine configured to open an electromagnetic water supply valve. The main body side electromagnetic water supply valve is a multiple electromagnetic water supply valve capable of selecting two or more flow paths, and at least one of the main body side electromagnetic water supply valves is configured to supply water directly to the washing tub. One series supplies water to the detergent container, the washing tank side of the main body side electromagnetic water supply valve is opened in advance, the faucet side electromagnetic water supply valve is opened after the elapse of a third predetermined time, 3. The structure according to claim 1 or 2, wherein the detergent inlet side of the main body side electromagnetic water supply valve is opened after a predetermined time, and the detergent inlet side electromagnetic water supply valve of the main body side electromagnetic water supply valve is closed after a fifth predetermined time has elapsed. The washing machine as described in.

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