JP2013094328A - Drum type washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a drum type washing machine that performs maintenance-free collection and discharge of lint.SOLUTION: The drum type washing machine includes: a discharge valve 26 for discharging washing water from a bottom of an outer tub 23 having a washing drum 25 inside; a mesh filter 30 that forms a circulating water flow passage by a circulation passage suction opening 38 and a circulation passage A41, a circulation pump 28, a circulation passage B29 and a circulation passage water spray opening 31 in the upstream of the discharge valve 26 and collects lint in the circulation passage suction opening 38; and an on-off valve 35 upstream of the mesh filter 30. In washing and rinsing processes, the on-off valve 35 is made open to collect lint on the mesh filter 30 by a circulating water flow by an operation of the circulation pump 28. The operation of circulation pump 28 is stopped after a lapse of a predetermined time. By closing the on-off valve 35 and opening the discharge valve 26, washing water in the circulation passage B29 and the circulation passage A41 is discharged. Then lint collected on the mesh filter 30 is peeled off and discharged. Thus maintenance-free is achieved.

Description

  The present invention relates to a drum-type washing machine that collects lint.

  Collection of lint is one of the important washing machine performances that keeps clothes from being washed.

  Regarding the collection of lint used in drum-type washing machines in ordinary households, in order to collect lint more efficiently, a water circulation path with a circulation pump is constructed, and lint is retained by this circulation pump. Lint was collected in a circulation path cycle of washing water that was pumped up with detergent water at the bottom of the washing drum and supplied to a lint collection unit provided in the upper part of the main body (for example, see Patent Document 1).

  FIG. 3 shows a longitudinal sectional view of a conventional drum-type washing machine described in Patent Document 1. As shown in FIG.

  As shown in FIG. 3, a door 2 is provided on the front of the main body 1 of the drum type washing machine so as to be openable and closable, and an outer tub 3 in which a washing drum 5 is rotatably provided is arranged inside the door 2. To do. A drain valve 6 for discharging washing water is formed at the bottom of the outer tub 3, and a drain hose 7 is connected to the tip of the drain valve 6.

  A circulation pump 8 for circulating washing water is connected to the bottom of the outer tub 3 and is connected to a lint collection unit 10 provided on the upper side of the main body 1 via a circulation path 9 of a water circulation channel. . The lint collection unit 10 is configured by a filter or the like, and is stored in a lint collection case 11 having a take-out handle 18. The upper end of the return pipe 12 for returning the washing water to the washing drum 5 is connected to communicate with the lint collection case 11, and the water spout 13 is provided at the lower end of the return pipe 12 for circulation. The circulating water flow through the path 9 and the lint collection case 11 returns to the washing drum 5 and the outer tub 3 through the water spout 13.

  Water for washing water for washing is injected into the washing drum 5 from the water spout 13 without passing through the lint collecting part 10 by operating a water supply electromagnetic valve 15 from a water supply hose (not shown) connected to the water supply port 14. Is done.

  When the water supply electromagnetic valve 15 is actuated to supply water and washing water necessary for washing is supplied, the motor 17 rotates to rotate the washing drum 5. At this time, the circulation pump 8 is operated intermittently or continuously, and the washing water at the bottom of the outer tub 3 is poured into the lint collection unit 10 in the lint collection case 11 and passes through the circulation path 9 of the water circulation channel. Collect lint. The lint collecting unit 10 collects lint by repeating the above-described cycle, and the user operates the take-out handle 18 to draw it out from the main body 1 periodically or whenever the washing machine is used. Remove lint.

JP 2007-282963 A

  However, in the configuration of such a conventional washing machine, the lint collecting ability is effective if the lint of the lint collecting unit is removed and the collecting unit filter is not clogged, but the lint collecting unit is effective. Cleaning depends on the user, so if you forget to clean or if the cleaning is insufficient, the filter of the lint collection part, that is, the washing water will not be circulated in the water circulation path and the lint collection will not be possible. There was the above problem. In addition, the removal of the lint collected on the filter of the lint collection unit must be performed every time it is used.

  The present invention solves the above-mentioned conventional problems, and in a drum-type washing machine, it effectively collects lint and does not have a lint collection unit operated by the user, and automatically performs washing or rinsing. The object is to provide a maintenance-free washing machine that discharges lint out of the body.

  In order to solve the above-described conventional problems, a drum-type washing machine according to the present invention includes an outer tub provided in a washing machine body, a washing drum rotatably provided in the outer tub, and washing from the outer tub. A drainage path provided with a drainage valve for discharging water, a circulation path suction port for sucking wash water from the drainage path on the upstream side of the drainage valve, and a circulation path sprinkling port directed to the inside of the washing drum from the outer tub A circulation pump for generating a circulating water flow for discharging washing water to the washing drum, a circulation path A for piping the circulation path suction port and the circulation pump, and a circulation for piping the circulation pump and the circulation path water spout A path B, a filter configured to collect lint configured at the circulation path suction port, and an on-off valve capable of movably controlling a drainage path between the circulation path suction port and the outer tub, During the rinsing process , Opening the on-off valve, collecting lint on the filter by circulating water flow by the operation of the circulating pump, stopping the circulating pump after a predetermined time, closing the on-off valve and opening the drain valve It is.

  This allows the lint to adhere to the mesh filter in the drainage path, collect it, and to wash out the lint that does not require the user's work out of the main part of the washing water used during washing or rinsing. You can get a free drum-type washing machine.

  The washing machine of the present invention can realize a maintenance-free drum-type washing machine that efficiently collects lint and discharges it outside the main body.

Longitudinal sectional view of the washing machine according to Embodiments 1 and 2 of the present invention Longitudinal sectional view of the washing machine according to Embodiment 3 of the present invention Side sectional view of a conventional washing machine

  1st invention, The outer tub provided in the washing machine main body, The washing drum rotatably provided in the said outer tub, The drainage path provided with the drain valve which discharges washing water from the said outer tub, A circulation path suction port for sucking washing water from the drainage path upstream from the drain valve, a circulation path water spout opening directed to the inside of the washing drum from the outer tub, and a circulating water flow for discharging washing water to the washing drum A circulation pump for producing the circulation path, a circulation path A for piping the circulation path suction port and the circulation pump, a circulation path B for piping the circulation pump and the circulation path water spout, and a lint configured in the circulation path suction port A filter that collects water and an on-off valve that can be movably controlled to open and close a drainage path between the circulation path inlet and the outer tub. In operation By collecting the lint on the filter with a circulating water flow, stopping the circulating pump after a predetermined time, and closing the open / close valve to open the drain valve, the initial state without lint adhesion to the mesh filter Since the circulation pump is operated again, maintenance-free lint removal can be performed, the flow rate of circulating water from the circulation pump does not change, and maintenance of the washing performance in the washing process can be ensured. Rinsing performance can be improved by pouring laundry water with a small amount of lint directly into the laundry through the water circulation path of the pump. Further, since lint remaining in the washing drum after washing is reduced, the washing machine main body can be kept clean.

  In particular, according to the second invention, in the first invention, a current detection circuit for detecting an energization current value of the circulation pump is configured, and when the energization current value changes to a predetermined value or more, the operation of the circulation pump is stopped. By controlling the drainage of the wash water in the circulation path B and the circulation path A by closing the open / close valve and opening the drain valve, the lint discharge capacity can be improved more accurately and efficiently. Can do.

  In the third invention, in particular, in the first invention, a pressure sensor is formed in the circulation path A, and when the pressure change changes to a predetermined value or more, the operation of the circulation pump is stopped and the on-off valve is closed. By opening the drain valve and performing control to drain the washing water in the circulation path B and the circulation path A, the lint discharge capacity can be improved more accurately and efficiently.

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

(Embodiment 1)
1 is a longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention. In FIG. 1, a door 22 that can be opened and closed is provided in front of a main body 21 of a drum type washing machine, and the door 22 is washed in a washing drum 25 by a rubber bellows 24 fixed to the main body 21 and an outer tub 23. The water is sealed. The washing drum 25 is rotatably installed in the outer tub 23 and is driven to rotate by a motor 36.

  At the bottom of the outer tub 23, a circulation pump 28 for circulating the detergent water through the drainage path 44 is configured, and a circulation path A41 on the inflow side of the water circulation channel and a circulation path B29 on the discharge side are connected. Yes. A mesh filter 30 for collecting lint is provided at the circulation path suction port 38 of the circulation path A41. A circulation passage sprinkling port 31 directed from above the outer tub 23 to the inside of the washing drum 25 is connected to the circulation passage B29 and connected so as to return the detergent water to the washing drum 25 as a circulation water flow. A drainage path 44 between the circulation path suction port 38 and the outer tub 23 is configured with an on-off valve 35 that can be controlled to be opened and closed.

  In the drainage hose 27 which arranges the circulation path suction port 38 and the mesh filter 30 which are also the connection part to the circulation path A41 in the drainage path 44 on the downstream side of the on-off valve 35, and further drains the machine to the downstream side. An openable / closable drain valve 26 to be connected is arranged.

  The washing water for washing is poured into the outer tub 23 and the washing drum 25 from the water supply solenoid valve 33 and the outer tank water supply port 39 from the water supply hose 40 connected to the water supply port or the like.

  The operation of the drum type washing machine configured as described above will be described below.

  First, when the water supply electromagnetic valve 33 is operated to supply water and supply of washing water necessary for washing is completed, the motor 36 rotates to rotate the washing drum 25 to start the washing process and the rinsing process.

  In the washing process or the rinsing process, the drain valve 26 is closed, the open / close valve 35 is opened, the circulation pump 28 is operated, and washing is performed from the bottom of the outer tub 23 through the circulation path water spout 31 through the circulation path A41 and the circulation path B29. A circulating water stream returning to the drum 25 is formed.

  The structure of the circulating water stream improves the dissolution of the detergent at the time of washing, improves the cleaning ability by the collision of the circulating water stream with the clothes in the washing drum 25, and the rinsing effect by the effective spraying of the rinsing water on the clothes at the time of rinsing. It works to improve.

  On the other hand, lint contained in the circulating water flow adheres to the surface of the mesh filter 30 and collection is promoted, and the flow of washing water in the water circulation path is repeated, so that lint is efficiently collected, After a predetermined time has elapsed, the operation of the circulation pump 28 is stopped, the open / close valve 35 is closed, and the drain valve 26 is opened.

  Washing water in the circulation path A41 and the circulation path B29 flows backward due to gravity when the circulation pump 28 is stopped, and the lint collected in the mesh filter 30 is peeled off from the drainage valve 26 and the drainage hose 27 that are opened. Drain outside the body. In addition, since the on-off valve 35 is closed in the washing process and the rinsing process, the washing water in the outer tub 23 is not drained, and only the washing water in the circulation path A41 and the circulation path B29 is discharged. There is no problem in driving.

  By repeatedly performing the above action, lint is efficiently collected and discharged.

  Further, in the draining process subsequent to the washing process and the rinsing process, the mesh filter 30 is also cleaned when the on-off valve 35 is opened and the washing water in the outer tub 23 is drained.

  As described above, in the present embodiment, the basic configuration of lint collection in the lint collection unit and cleaning of the lint collection unit has been conventionally used, but the maintenance process is free of washing, rinsing, and draining processes. By returning to the initial state where there is no lint adhesion to the mesh filter, the circulation pump in the initial state where there is no lint adhesion during the next process or next use can be operated.

  In addition, the amount of discharge from the circulation pump does not change, and it is possible to ensure maintenance of the washing performance in the washing process. In the rinsing process, washing water with a small amount of lint is directly poured into the laundry through the water circulation path of the circulation pump. Rinsing performance can be improved. Furthermore, since lint remaining in the washing drum after washing is reduced, the washing machine main body can be kept clean.

(Embodiment 2)
In FIG. 1, a current detection circuit 43 is provided in a control circuit (not shown), and an energization current value of the circulation pump 28 is detected during a washing process and a rinsing process.

  When the lint is collected by the mesh filter 30 over a certain amount, the circulating water flow decreases, the inside of the circulation path A41 becomes negative pressure, the load increases, and the energization current value of the circulation pump 28 increases. When the energization current value exceeds a predetermined value, the operation of the circulation pump 28 is stopped, the open / close valve 35 is closed, the drain valve 26 is opened, the washing water in the circulation path A41 is made to flow backward, and collected by the mesh filter 30. Remove the lint and drain it out of the body.

  If the energization current value is equal to or greater than a predetermined value, the control is performed a plurality of times during the washing process and during the rinsing process, thereby improving the lint discharging capability more accurately and efficiently.

(Embodiment 3)
FIG. 2 is a longitudinal sectional view of the washing machine according to the third embodiment of the present invention. In FIG. 2, a pressure sensor 42 is configured in a circulation path A 41 between the mesh filter 30 and the circulation pump 28.

  When a certain amount or more of lint is collected in the mesh filter 30 during the washing process or the rinsing process, the pressure in the circulation path A41 becomes negative, and the pressure sensor 42 detects a change in the pressure value in the circulation path A41. A signal is transmitted to (not shown), the operation of the circulation pump 28 is stopped, the on-off valve 35 is closed, the drain valve 26 is opened, the washing water in the circulation path A41 is caused to flow backward, and the mesh filter 30 collects the water. Remove the lint and drain it out of the body.

  If the pressure value change is equal to or greater than a predetermined value, the control is performed a plurality of times even during the washing process and during the rinsing process, thereby improving the lint discharging ability more accurately and efficiently.

  As described above, the drum type washing machine according to the present invention enables a maintenance-free configuration in which lint is efficiently attached and collected, and the lint is discharged out of the main body together with water drained during washing or rinsing. There is convenience, and since the circulating water flow functions sufficiently, the washing performance and the rinsing performance can be improved, which is useful.

21 Body 23 Outer tub 25 Washing drum 26 Drain valve 28 Circulation pump 29 Circulation path B
30 mesh filter (filter)
31 Circulation path water spout 35 Open / close valve 38 Circulation path suction port 41 Circulation path A
42 Pressure sensor 43 Current detection circuit 44 Drainage path

Claims (3)

An outer tub provided in the washing machine main body, a washing drum rotatably provided in the outer tub, a drainage passage having a drainage valve for discharging washing water from the outer tub, and an upstream side of the drainage valve A circulation path suction port for sucking washing water from the drainage path, a circulation path water spout opening directed to the inside of the washing drum from the outer tub, and a circulation pump for generating a circulation water flow for discharging washing water to the washing drum, A circulation path A that pipes the circulation path suction port and the circulation pump, a circulation path B that pipes the circulation pump and the circulation path water spout, and a filter that collects lint configured in the circulation path suction port; An open / close valve that can be movably controlled to open and close a drainage path between the circulation path suction port and the outer tub, and the open / close valve is opened during a washing process or a rinsing process, Collecting the lint in Iruta, the circulation pump was stopped after a predetermined time has elapsed, the drum type washing machine performs a control to the drain valve closes the on-off valve to open. Configure a current detection circuit that detects the energization current value of the circulation pump, and when the energization current value changes to a predetermined value or more, stop the operation of the circulation pump, close the on-off valve, and open the drain valve. The drum type washing machine according to claim 1, wherein the washing water in the circulation path B and the circulation path A is drained. In the circulation path A, a pressure sensor is configured. When the pressure change changes to a predetermined value or more, the circulation path B and the circulation path B and the drain valve are opened by stopping the operation of the circulation pump and closing the on-off valve. The drum type washing machine according to claim 1, wherein control is performed to drain the washing water in the circulation path A.

Images