KR19990042122A - Drain pump filter of washing machine - Google Patents

Abstract

The present invention relates to a drain pump filter of a washing machine, the purpose of which is to seal the foreign body of the washing water is inserted into the pump body, the sealing portion integrally to the filter surrounding the inlet outer peripheral surface of the motor tube for generating a suction force It is to provide a drain pump filter of the washing machine to facilitate the manufacturing process and assembly process.

The present invention is a pump body provided with an inlet pipe to be connected to the drain of the water tank, provided on the other side of the pump body, the motor tube coupled to the drain motor, the drain pipe provided in the motor tube so that the wash water passed through the drain pipe, the motor tube is opposed to The filter tube, which is provided to be fastened to the filter tube and the opening and the opening provided to be fastened to the filter tube to cover the outer peripheral surface of the inlet of the motor tube, in the center is provided with a sealing hole on the middle park plate integrally spaced apart from the predetermined gap and the filter hole and the outer peripheral surface As an advantage there is an easy manufacturing process and assembly process.

Description

Drain pump filter of washing machine

The present invention relates to a drain pump filter of a washing machine, and more particularly, to a drain pump filter of a washing machine, in which the sealing structure of the filter is injection molded integrally with the filter, thereby reducing the manufacturing process and improving the assemblability.

In general, a washing machine is programmed to control the washing, rinsing, draining, and dehydration in advance to the microcomputer in the control unit, and the program can be selectively controlled by the user so that the laundry is automatically washed.

The washing machine having such a function is provided with a control unit on the upper part of the case forming an external appearance, and a water tank in which the washing water is filled is installed inside the case. The washing tank is rotatably configured in the inside of the water tank, and a pulsator is formed at the center of the washing tank to form the washing water flow. In addition, the bottom of the water tank and the washing tank is provided with a drive unit having a motor that is rotated forward and backward to selectively transmit the driving force of the motor to the pulsator and the washing tank. The driving unit rotates the pulsator forward and backward in the washing stroke to perform the washing stroke, and after the washing stroke is completed, the washing tank rotates at a high speed to perform the dehydrating stroke.

On the other hand, the bottom of the case, the lower side of the water tank is connected to the water tank is provided with a drainage pump for forcibly draining the wash water after washing and dehydration. The drain pump is provided with a pump motor on one side of the pump body provided between the drain hose connected to the water tank side and the drain hose for draining to the outside.

1 is a cross-sectional view showing such a pump body and a filter coupled to the pump body. As shown in the drawing, the pump body 1 is a plastic injection molded product provided with a tubular shape having different diameters in up and down directions, left and right directions, and front and rear directions.

The rear side is provided with an inlet pipe (1a) is connected to the drain hose (not shown) extending from the water tank to the wash water of the tank, the filter 2 is coupled to the rear and the filter pipe (1b) is coupled to the outer surface of the case ) Is provided. And the left side is provided with a motor pipe (1d) is coupled to the pump motor (not shown) and the front is provided with a drain pipe (1e) for discharging the wash water introduced through the inlet pipe (1a) to the outside. In addition, the up and down direction is a pressure discharge pipe 1f for discharging the pressure at the excessive pressure generated by the rotation of the pump motor, and the inside of the side located at the upper side when the position of the drain pipe 1e and the inlet pipe 1a is changed. It is punctured to release pressure.

On the other hand, the filter 2 which is fastened to the nut part 1c provided inside the filter pipe 1b is installed to be removed from the outside of the washing machine to remove the foreign substances filtered therein and is coupled to the inside of the filter pipe 1b. It is provided with an opening and closing opening 3 and a latching opening 4 coupled to the opening and closing opening 3 and extending to the inlet of the motor tube 1d. And the packing member 5 is provided at the front end of the trap 4.

The opening and closing opening 3 is a plastic injection molded product in the form of a circular tube, and a bolt portion 3a that engages with the nut portion 1c of the filter tube 1b is provided on the outer circumferential surface thereof. On the left side, the handle 3b is provided so that the user can rotate the other part except the center and the outer circumferential surface inside.

The trap opening 4 is a soft plastic injection molded product that is integrally formed. The rotating surface 4a on the left side protrudes inward and is rotatably coupled to the opening and closing opening 3. The flow path surface 4b on the right side also protrudes inward and has a flow path hole 4c through which the washing water flowing from the inlet pipe 1a passes. And a pair of connection surface 4d is provided up and down between the rotation surface 4a and the flow path surface 4b. The connecting member blocks a part of the pressure discharge pipe 1f positioned up and down, and a guide protrusion 4e is provided on the outside of the connecting surface 4d so as to be positioned so that the pump body 1 has a wide inlet to the insertion side. It is provided with a projection guide groove (1a) for narrowing toward the inner side to fix the position of the guide projection (4e).

The packing member 5 is made of a material that can be compressed and sealed by being coupled to the flow path surface 4b of the catching hole 4, and seals the outer circumferential surface of the flow path surface 4b through the inlet pipe 1a. The washing water introduced into (1) is allowed to flow into the drain pipe 1e only through the flow path hole 4c of the flow path surface 4b. As a result, the suction pressure generated by the rotation of the pump motor is acted through the narrow passage hole 4c to generate a strong suction force.

However, such a conventional drainage pump filter of the washing machine is manufactured by separating the filter spout and the packing member, and assembling it, so that the packing may be separated and not discharged to the outside during the user cleaning the filter. In some cases, the packing is separated and the seal cannot be moved to the set position. And there is a risk of losing the packing during this process. In other words, because it is manufactured separately, the manufacturing process is complicated, the assembly process is required, the insertion and removal of the filter is inconvenient, and the packing is lost.

The present invention is to solve such a problem, an object of the present invention is integrated into the filter surrounding the inlet outer peripheral surface of the motor tube for generating a suction force to filter foreign matter of the wash water is inserted into the pump body to drain Furnace sealing unit to provide a drain pump filter of the washing machine is easy to manufacture and assembly process.

1 is a cross-sectional view showing a conventional drain pump filter.

2 is a view showing the inside of a washing machine equipped with a drain pump according to the present invention.

3 is an exploded perspective view showing the drain pump filter of FIG. 2.

4 is a cross-sectional view of the coupling state of the drain pump filter of FIG.

Explanation of symbols on the main parts of the drawings

10: case 20: water tank 21: drain

22: drain hose 100: drain pump 110: pump body

112: inlet pipe 113: drain pipe 114: pressure discharge pipe

116: motor tube 117: filter tube 120: drainage motor

130: filter 140: opening and closing 150: catch hole

151: rotating surface 153: euro side 154: euro ball

200: sealing part

The present invention for achieving the above object, the water tank formed with a drain port on one side, a pump body provided with an inlet pipe to be connected to the drain port, a motor tube provided on the other side of the pump body coupled to the drain motor, through the drain pipe A washing machine having a drain pipe provided in the motor pipe, a filter pipe provided opposite the motor pipe, and a filter detachably provided at the filter pipe so that one wash water can be discharged, the filter is fastened to the filter pipe. It extends from the opening and closing opening and the opening is provided so as to surround the outer peripheral surface of the inlet of the motor tube and the center is provided with a sealing hole on the center hole and the sealing hole on the center park plate to be spaced a predetermined distance apart.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Figure 2 is a side cross-sectional view schematically showing the internal configuration of the washing machine employing the drainage pump according to the present invention. As shown in the figure, the inside of the case 10 forming the body appearance is provided with a tubular tub 20 having an upper side opened so that the washing water can be filled. The water tank 20 is rotatably set up, and a plurality of dehydration holes are drilled on the wall, and a washing tank 30 having a shape similar to the water tank 20 is installed. And the bottom of the washing tank 30 is provided with a pulsator (31) for forward and reverse rotation to form the washing water flow.

The lower portion of the water tank 20 is provided with a driving unit 40 for driving the washing tank 30 and the pulsator 31, which transfers the motor 41 and the rotational force thereof to generate power through the belt 42 It consists of a clutch 43 to rotate the pulsator 31 and the washing tank 30 simultaneously or selectively. And the upper part of the case 10 is provided with an upper cover 11 covering the upper part of the case 10, the inside of the upper cover 11, the lid hinged to open and close the inside of the case 10 ( 12) is provided.

On the other hand, one side lower surface of the water tank 20 is provided with a drain port 21 for discharging the wash water in the water tank 20 to the outside, the drain hole 21, the drain hose 100 is installed in the middle of the drain hose 22 ) Is placed. The drain pump 100 includes various pipes coupled to the pump main body 110 fixed to the bottom of the case 10, a drain motor 120, and a filter 130.

The pump main body 110 is provided with an inlet pipe 112 coupled to the drain hose 22 connected to the water tank 20 on the left side, and a drain pipe 113 coupled to the outer drain hose 22 on the right side. , The upper side is provided with a pressure discharge pipe 114 for discharging the pressure to the outside when the internal pressure is excessive, and the pressure discharge hose 114 is connected to the pressure discharge hose 115, the height above the highest water level in the fresh water tank 20 Extends. The drain pipe side drain hose 22 also extends to the same height and is drawn out and fixed to the outside of the case 10.

The drainage motor 120 is provided on the rear surface of the pump body 110. The drain motor 120 drives the impeller not shown to suck the wash water introduced through the water tank 20, the drain port 21, and the drain hose 22 and the water inlet pipe 112 to drain the drain pipe 113 and drainage. It is to generate a suction force to discharge to the outside through the observation drain hose (22).

The filter 130 is detachably provided on the front surface of the pump body 110 that communicates with the outside of the washing machine case 10, and the user can remove the foreign substances inside the drain pump 100 as an inlet pipe 112. ) To filter foreign matter in the wash water is moved to the drain pipe (113).

Figure 3 is an exploded perspective view showing the pump body and the filter separately, Figure 4 is a longitudinal cross-sectional view showing a state in which the pump body and the filter is coupled. Referring to this, the filter of the present invention will be described in detail as follows. As shown in the figure, the pump body 110 is formed with pipes in the up and down direction and the left and right direction of the hollow tube having the front and rear open.

The rear of the pump main body 110 is a motor tube 116 coupled with the drainage motor 120, the impeller (not shown) of the drainage motor 120 is inserted therein to generate a suction force by rotating, the motor tube ( The right side of the 116 is provided with a drain pipe 113 connected to the external drain hose 22 to the side of the rotating impeller (not shown), the right side of the pump body 110, the drain port side of the water tank 20 An inlet pipe 112 is connected to the drain hose 22. And the pressure discharge pipe 114 is provided in the upper direction and the lower direction of the pump body 110, not shown. The pressure discharge pipe 114 has a position of the water inlet pipe 112 and the drain pipe 113 is changed according to the position of the drain port 21, so that the upper and lower sides of the pump body 110 is changed, the inside of the pressure discharge pipe 114 located on the upper side It is provided on both sides so that it can be used by drilling.

And the front of the pump body 110 is provided with a filter tube 117 into which the filter 130 is inserted. The filter tube 117 is provided with a nut portion 118 therein, and the filter 130 provided with the bolt portion 141 opposite thereto is detached.

The filter 130 is provided with a plastic injection molding material of the same material as the pump body 110, and is inserted into the pump body 110 as a soft plastic injection molding with the opening and closing port 130 inserted into the filter tube 117 to remove foreign substances. It is provided with a strainer 150.

The opening and closing port 130 is inserted into the filter tube 117, which is a hollow park tube, and has an outer side facing the inside of the filter tube 117 to seal the filter tube 117, and a bolt portion 141 is formed on the outer circumferential surface thereof. And the outer surface is integrally formed with a handle 143 to allow the user to rotate the attachment and detachment of the filter 130. And the inner side has a rotating hole 142 having a locking jaw is projected to the inside of the pump body 110 so that the engaging hole 150 is coupled to it.

The filter spout 150 is rotatably installed in the opening and closing port 130, and has a rotation surface 151 and a flow path surface 153 and a rotation surface 151 and a flow path provided to block the filter pipe 117 and the motor pipe 116. It is provided with a connecting surface 155 provided in a pair of upper and lower sides so as to connect the surface 153, the guide projection 156 is provided on the outer side of the connecting surface 155, the pump body 110 opposed thereto The inside of the inlet side is provided wide and is provided to be narrowed toward the moving direction is provided with a guide guide groove 111 for fixing the guide projection 156 is inserted and guided to the pressure discharge pipe side.

Rotating surface 151 is formed in the shape of a disc that blocks the inner side of the filter tube 117 and the rotary groove 152 recessed in the pump body 110 inside the shape corresponding to the rotary hole 142 in the center of the rotary hole 142 is installed to surround the rotary hole 142 in the interior of the rotating groove 152 is rotatable.

The flow path surface 153 is provided adjacent to the motor pipe 116 facing the filter pipe 117, the central park plate shape is provided with a flow path 154 through which the washing water flowing through the water inlet pipe 112 passes through the center. Is prepared. The flow path 154 has a diameter smaller than the diameter of the motor tube 116 and protrudes to the inside of the pump body 110 so that the wash water introduced into the pump body 110 through the inlet pipe 112 is moved. Since the foreign matter is collected to the periphery of the flow path hole 154 and washing water is sucked only through the flow path hole 154 having a smaller diameter than that of the motor pipe 116, the suction pressure generated by the rotation of the pump motor 41 is narrow. It can be acted through the ball 154 to generate a strong suction force.

The connection surface 155 is provided between the rotation surface 151 and the flow path surface 153, and the guide protrusion 156 of the catch hole 150 inserted along the protrusion guide groove 111 is the protrusion guide groove 111. Under the guidance of a part of the upper and lower pressure discharge pipe 114 is to be closed. At this time, since the catching hole 150 and the opening and closing port 130 are provided to be rotatable with each other, the guide protrusion 156 according to the forward and backward movement of the opening and closing door 130 is independent of the rotation of the opening and closing door 130. Receive guidance. Located up and down of the pressure discharge pipe 114, it is drawn out.

On the other hand, the outer side of the flow path surface 153 is provided with a sealing portion 200 which is provided integrally with the flow path surface 153. The sealing part 200 has a circular plate shape extending in the circumferential direction in a state in which the flow path hole 154 protruding into the pump body 110 extends outward, and the outer circumferential surface of the sealing part 200 is a flow path surface 153. It is spaced apart from the outer circumferential surface of the motor tube 116 is in close contact with the inlet of the pump body 110 to prevent the washing water flowing into the outer circumferential side of the flow path surface 153 rather than the flow hole 154.

The process and operation of coupling the filter 130 to the pump body 110 as described above are as follows. The filter 130 is inserted into the filter tube 117 with the sealing part 200 facing forward. At the same time, the guide projection 156 is inserted into the entry side of the projection guide groove 111. The guide protrusion 156 is positioned upward and downward of the pressure discharge pipe 114 along the protrusion guide groove 111, and the user rotates the opening and closing hole 130 to the bolt part 141 and the nut part. By fastening the 118, the sealing part 200 provided at the front end of the filter 130 is sealed in close contact with the outer circumferential surface of the inlet of the motor tube 116.

The combined pump motor 41 washes water into the pump body 110 through the water inlet 21 of the water tank 20 and the inlet pipe 112 of the drainage pump 100 during the washing and dehydrating stroke of the washing machine. Inflow. The introduced wash water is sucked into the drainage pipe due to the driving of the drainage motor 120. At this time, the washing water flows into the discharge pipe through the flow hole 154 of the filter 130, and the foreign matter is collected around the flow hole 154.

And when removing the foreign matter filtered in the drain pump 100 at the stop of the washing machine by rotating the handle 143 of the opening and closing port 130 is to take out the filter from the filter tube 117. At this time, the foreign matter gathered inside the trap opening 150 comes together, and the user removes it and uses the filter 130 of the filter tube 117 again.

Since the drain pump filter of the washing machine configured as described above is provided with a sealing part integrally at the tip of the filter opening provided therein, the manufacturing process and the assembly process are easy, and the sealing structure can be prevented from being separated or lost while the user cleans the filter. This has the advantage of easy removal.

Claims (1)

A water tank formed with a drain hole on one side thereof, a pump body provided with an inlet pipe to be connected to the drain hole, a motor tube provided on the other side of the pump body to which a drain motor is coupled, and provided in the motor tube so that the wash water passing through the drain pipe can be discharged. In the washing machine provided with a drain pipe, a filter tube provided to face the motor tube, and a filter detachably provided at the filter tube, The filter extends from the opening and closing opening to be fastened to the filter tube and the opening and closing to surround the outer peripheral surface of the inlet of the motor tube, and a centrally-separated opening is provided with a flow path and a sealing portion on the hollow park plate is provided so that the filtering hole and the outer peripheral surface are spaced at a predetermined interval. Drainage pump filter of the washing machine, characterized in that.