KR102123792B1 - Cleanser pump for dishwasher - Google Patents

Abstract

The present invention relates to a detergent feeder for a dishwasher having a rotating body equipped with a push roller which pressurizes a hose by rotating inside the hose so that detergent in the hose is discharged by pressing the hose connected in a U shape. Since the push roller and a support roller are arranged to be spaced apart at a predetermined interval in the circumferential direction of the rotating body, and the support roller spaced apart from the push roller directly presses and unfolds a connected part when the push roller presses the U shaped connected part of the hose during rotation of the rotating body to discharge the detergent, bending of the connected part can be prevented.

Description

Detergent supply machine for dishwasher{CLEANSER PUMP FOR DISHWASHER}

The present invention relates to a detergent supply device for a dishwasher having a rotating body equipped with a push roller that rotates inside the hose to pressurize the hose connected to the U-shaped hose to discharge the detergent in the hose. When the push roller and the support roller are arranged at a predetermined interval in the circumferential direction, and the push roller pushes the'U' shaped connection part of the hose during the rotation of the rotating body to discharge the detergent, the support roller arranged with the push roller is spaced apart. It relates to a dishwasher detergent supply device that can prevent the bent portion of the connecting portion by directly pressing the bent portion of the connecting portion.

In general, the dishwasher is intended to make washing of dishes more hygienic and efficient, and mainly wash water and rinse water contained in the lower tanks of the washing machine are transported through a supply pipe by a pump to rotate in the washing room. Washing water and rinsing water are sequentially sprayed through the nozzles of the spray tube to wash dishes placed in the washing chamber.

The dishwasher supplies detergent (liquid detergent and/or rinse, etc.) contained in a separate container to a detergent tank through a detergent feeder (pump) so that detergent is sprayed during dish washing.

In the detergent supply machine, rollers for rolling are built up at both ends of the rotating body rotated by the motor, and the rollers continuously press the hose located in the rotating path of the rollers, so that the detergent contained in the container is sucked, pumped, and discharged to the tank for supply. .

As a related art, there is Patent No. 10-0654911.

Specifically, in the registered patent, the rotating shaft of the motor mounted on the rear of the case penetrates the case and protrudes to the front, rollers for rolling are mounted on both sides of the rotor fixed to the rotating shaft, and the upper part of the hose installed inside the case Is semi-circular and is located at the radius of rotation of the rolling roller to pump and supply detergent through the rotation of the rotor.

In this registration patent, two rollers sequentially pump through the'U'-shaped connection portion of the hose.

At this time, each roller must be completely compressed with a strong pressure to the contact area while passing through the connecting portion, so that suction and discharge of detergent becomes possible.

However, as in a conventional patent, when a single roller passes through the connection portion under strong pressure or when the pump is stopped, the portion that is not in contact with the roller receives a force inward, resulting in a bending phenomenon of the connection portion, and the connection portion is broken. As it is repeated for a long time, there is a problem that the hose is easily damaged.

Accordingly, the present invention has been devised to solve the problems as described above,

In a dishwasher detergent supply machine for pumping and supplying detergent using a push roller, press the connection portion with a support roller to prevent bending of the hose connection portion by the push roller,

During operation, it is possible to prevent wear and deterioration of parts due to friction between the housing and the rotating body.

Natural drainage of leaks in the housing reduces the risk of failure,

An object of the present invention is to provide a dishwasher detergent supply device capable of repeatedly aligning and maintaining a connection portion of a hose through a support roller in a fixed position.

In order to achieve the above object, the detergent supply for the dishwasher according to the present invention,

A housing having a'U' shaped first outer wall portion and a second outer wall portion connecting both ends of the first outer wall portion, an inlet side first mounting hole and an outlet side second mounting hole formed on both sides of the second outer wall portion;

A motor provided outside the rear case of the housing and having a drive shaft fitted into the mounting portion;

A detergent supply hose having both ends of which are fixed to the first mounting hole and the second mounting hole and having an'U'-shaped connection part supported inside the first outer wall part; And

It is mounted to be rotated in one direction by the drive shaft in the mounting portion, and each of the rim portion, the push roller to completely discharge the detergent in the hose by squeezing the connecting portion during rotation, and arranged to be spaced apart from the push roller by a predetermined distance It characterized in that it comprises; a rotating body having a support roller to prevent the bending of the connecting portion by pressing the connecting portion during rotation.

And in the detergent supply for dishwashers according to the present invention,

The rotating body includes an axial hole through which the drive shaft is fitted, and an axial groove having a larger inner diameter than the axial hole along the circumference of the front end of the axial hole,

The housing includes a shaft protrusion protruding from the inner surface of the front case and inserted into the shaft groove,

The shaft protrusion has a conical opening groove whose inner diameter decreases from the inner end toward the outside, and is characterized in that frictional resistance between the shaft groove and the shaft protrusion is reduced when the rotating body rotates.

In addition, in the dishwasher detergent supply according to the present invention,

The rear case is characterized in that it comprises a drain portion for draining the leak formed on the outermost side of the second outer wall portion.

Furthermore, in the detergent supplier for the dishwasher according to the present invention,

The support roller is characterized in that it comprises a rod portion for pressing the inner outer surface of the hose, a pair of flange portions for projecting outwardly from both end portions of the rod portion to press the front and rear outer surfaces of the hose.

Detergent supplier for dishwashers according to the present invention,

When the push roller passes the connection part of the hose, the support roller presses and spreads the other part of the connection part to prevent the hose from being bent by the push roller so that the hose is not damaged,

It has a conical opening groove whose inner diameter diminishes as it goes outward toward the inner end of the axial projection functioning as the shaft of the rotating body, reducing thermal wear by reducing frictional resistance between the axial groove and the axial projection of the rotating body when the rotating body rotates, and Increase the mobility of the rotating body,

Even if an unintentional internal leak or moisture occurs, the detergent or moisture in the housing is naturally drained out of the housing, thereby preventing the detergent feeder from failing and spreading.

There is an effect of increasing durability by aligning and maintaining the connection portion of the hose in place through the support roller by wrapping the front and rear and inside and outside surfaces of the hose through the support roller having a'H' cross-section shape consisting of a rod portion and both flange portions.

1 is a combined perspective view of a dishwasher detergent supply according to the present invention.
Figure 2 is an exploded perspective view of a dishwasher detergent supply according to the present invention.
3 is a perspective view and a cross-sectional view of a main portion of a detergent supply machine for a dishwasher according to the present invention.
Figure 4 is a cross-sectional view of the detergent supply for a dishwasher according to the present invention.

The present invention can be applied to a variety of changes and can have a variety of forms, the implementation (態樣, aspect) (or embodiments) to describe in detail in the text. However, this is not intended to limit the present invention to a specific disclosure form, and it should be understood that it includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The same reference numbers in each drawing, especially the number of tens and ones, or the same number of tens, ones and alphabets refer to members having the same or similar functions, and unless otherwise specified, The member indicated by the reference numeral can be understood as a member conforming to these standards.

In addition, in each drawing, the components are exaggeratedly large (or thick) or smallly (or thinly) or simplified to express the size or thickness in consideration of convenience, etc., thereby limiting the protection scope of the present invention. It should not be.

The terminology used herein is only used to describe a specific embodiment (sun, 態樣, aspect) (or embodiment), and is not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as ~include~ or ~consist of~ are intended to designate the existence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features. It should be understood that the presence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

~ 1 ~, ~ 2 ~, etc. described in this specification will only refer to different components, and are not limited to the order in which they are manufactured, and the names in the detailed description and claims of the invention It may not match.

In the description of the detergent supply machine for a dishwasher according to the present invention, for convenience, a rough direction standard that is not strict is specified with reference to FIG. 1, and the direction in which gravity acts is determined downward, left, right, and left as it is, and other In the detailed description and claims of the invention related to the drawings, directions are specified according to this standard unless otherwise specified.

Hereinafter will be described with reference to the accompanying drawings, a dishwasher detergent supply machine according to the present invention.

As shown in Figures 1 to 4, the detergent supply for the dishwasher according to the present invention, a motor for rotating the housing 10, the rotating body 40 is largely installed on the wall of the parts of the dishwasher (not shown) ( 20), a detergent supply hose 30, a rotating body 40 for pumping discharge of detergent in the hose 30.

In the housing 10, the front case 11 and the rear case 12 are mutually coupled. In the cases 11 and 12, a'U'-shaped first outer wall portion 13a and the first outer wall portion are provided. Mounting portions 13 formed of second outer wall portions 13b connecting both ends of (13a), inlet-side first mounting holes 14 and outlet-side second mounting holes formed on both sides of the second outer wall portion 13b, respectively (15).

In the center of the rear case 12, a shaft coupling hole 12a for protruding the drive shaft 21 of the motor 20 into the mounting portion 13 is provided.

The motor 20 is provided on the outside of the rear case 12 of the housing 10, and has a drive shaft 21 fitted into the mounting portion 13.

The driving shaft 21 has an angled shape on one side for cooperative rotation with the rotating body 40 through the engaging engagement of the rotating body 40.

The detergent supply hose 30 has a'U'-shaped connection portion 31, both ends of which are fixed to the first mounting hole 14 and the second mounting hole 15 and supported inside the first outer wall portion 13a. Have

That is, the hose 30 itself is bent in the shape of an'U' so that the connecting portion 31 is supported and mounted inside the first outer wall portion 13a of the mounting portion 13, and is attached to the first mounting hole 14 at the entrance side. One end of the fixed hose 30 is connected to the detergent container and functions as an inlet 32, and the other end of the hose 30 fixed to the outlet-side second mounting hole 15 has a detergent tank (or detergent spray tube). It is connected and functions as an outlet (33).

The hose 30 is a soft hose made of silicone or the like, and is used as a flow path through which the detergent in the hose 30 is pushed in one direction while the shape of the hose 30 is depressed and the detergent in the hose 30 is deformed.

In addition, in order to fix both ends of the hose 30, pressurizing projections (not indicated in the drawings) to press and fix the outer surface of the hose 30 on the inner circumferential surfaces of the first and second mounting holes 15 of the housing 10 Is formed protruding.

The rotating body 40 is mounted to be rotated by the drive shaft 21 within the mounting portion 13, and is arranged to be spaced apart at a predetermined distance in the circumferential direction of the rim portion to press and press the connecting portions 31 during rotation. A push roller 43 and a support roller 44 are provided.

Specifically, the push roller (43) discharges detergent in the hose to the outlet (33) by completely squeezing the contact portion when passing through the connecting portion (31) during rotation of the rotating body (40),

The support rollers 44 are arranged to be spaced apart from the push rollers 43 at predetermined intervals to prevent the bending of the connecting portion 31 by pressing the inner outer surface while rotating the rotating body 40.

At this time, the push roller 43 has a length corresponding to the diameter of the hose 30, the radius from the rotating shaft to the outer surface when the push roller 43 passes the connecting portion 31 of the hose 30, the push roller 43 By the hose 30 is completely pressed by a strong force to transport the detergent in the hose 30 in the rotational direction of the rotating body 40 to discharge,

The support roller 44 has an outer diameter smaller than the diameter of the hose 30 (that is, an outer diameter smaller than the push roller 43), when the push roller 43 passes the connecting portion 31 of the hose 30 As a reaction to this, while supporting the outer surface of the connecting portion (31) bent inward with the support roller (44), press the bent portion to unfold it to the original shape, thereby preventing the shape of the connection portion (31) from being completely bent and deformed.

Specifically, the rotating body 40 is a pair of circular shaft plates 41 having a size corresponding to the inner diameter of the first outer wall portion 13a, and a pillar portion 41A connecting the centers of both shaft plates 41. As an'H' type conjugate,

It includes a shaft hole (41a) having a larger inner diameter than the shaft hole (41a) along the periphery of the front end portion of the shaft hole (41A) and the drive shaft 21 is fitted through the pillar portion (41A), .

And in order to prevent deformation through securing the supporting force between the two shaft plates 41, the outer peripheral surface of the pillar portion 41A is arranged radially outward, a plurality of disposed between the push roller 43 and the supporting roller 44 The ribs 42 are connected.

At this time, the rib 42 is formed such that the outer end has a length that can contact the inner outer surface of the connecting portion 31 of the hose 30, thereby assisting the bending prevention function of the support roller 44.

The shaft hole 41a has the same shape as the drive shaft 21, so that the drive shaft 21 is fitted into the shaft hole 41a, so that when the motor 20 is operated, the rotating body 40 rotates together with the drive shaft 21 do.

At this time, the drive shaft 21 has a length corresponding to the length of the front and rear of the shaft hole (41a), when the drive shaft 21 is fitted into the shaft hole (41a), the end of the drive shaft 21 does not protrude outside the shaft groove (41b) Do not.

The rotating body 40 is provided with one or more push rollers 43 and support rollers 44, respectively, in the circumferential direction. At this time, the number of the push rollers 43 and the support rollers 44 is not limited, and the present specification In the drawing, an exemplary embodiment in which two push rollers 43 and a support roller 44 are arranged in a cross shape with each other in a crosswise form is illustrated.

The push roller 43 has a cylindrical drum shape, and the rotating shaft penetrates and is respectively accumulated on both shaft plates 41, so that when the rotating body 40 rotates, the push roller 43 has a hose 30 (more precisely) When contacting the connecting portion 31, the push roller 43 rotates itself in the opposite direction of rotation of the rotating body 40 to press the outer surface of the hose 30.

The support roller 44 is connected to the rod portion 44A, which is formed to press the inner outer surface of the hose 30, and protrudes outwardly from both end portions of the rod portion 44A, to the front and rear outer surfaces of the hose 30. Including a pair of flange portions 44B and 44C formed to wrap, the cross section has an'H' shape.

The support roller 44 has a rod portion 44A and both flange portions 44B and 44C during rotation of the rotating body 40 on the inner and front surfaces of the hose 30, and more precisely the connecting portion 31. As all are in contact with each other, the push roller 43 prevents the connection portion from being bent by pressing and pushing the pasted portion, so that the unbroken connection is always aligned and maintained at the correct position.

In addition, the rotating body 40 is mounted to be spaced a predetermined distance from the inner surface of the front case 11 of the housing 10 so as to be able to advance in the longitudinal direction of the drive shaft 21 by centrifugal force during rotation.

That is, the rotating body 40 of the present invention does not have a separate fixed key or nut coupling with the end portion of the driving shaft 21, so that the centrifugal force acts when the rotating body 40 rotates, thereby leading to the front end of the driving shaft 21. As the pressure is applied to the end portion, the gap portion 11S required for the advancement of the rotating body 40 due to such centrifugal force is formed between the front case 11 and the front end shaft plate 41 of the rotating body 40, and the centrifugal force is applied. Relieves the pressure caused by

On the other hand, the rotating body 40 is more stable rotation is possible when both shaft plates 41 are laid, the housing 10 protrudes from the inner surface of the front case 11, the shaft protrusion 41b is inserted into the shaft protrusion (16) is further included.

The shaft protrusion 16 has the same outer diameter as the inner diameter of the shaft groove 41b to prevent shaking when the rotating body 40 is rotated.

In addition, the shaft protrusion 16 has a conical opening groove 16a whose inner diameter decreases toward the outside from the inner end, between the shaft groove 41b and the shaft protrusion 16 when the rotating body 40 rotates. The frictional resistance is reduced.

That is, when the rotating body 40 rotates while the inner end of the shaft protrusion 16 is in contact with the bottom surface of the shaft groove 41b, frictional resistance between the shaft protrusion 16 and the shaft groove 41b is generated. Therefore, as well as damage to parts due to thermal abrasion, the maneuverability of the rotating body 40 may be reduced due to increased frictional force.

The contact area of the shaft protrusion 16 contacting the shaft groove 41b through the conical opening groove 16a is reduced, thereby preventing the above-described problem.

On the other hand, due to the nature of the detergent supply for the dishwasher, a leak in the housing 10 may occur due to leakage of detergent in the hose 30 or moisture generation in the housing 10, and the rear case 12 is the It includes a drain portion (17) for leak discharge formed on the outermost side of the second outer wall portion (13b).

The drain portion 17 is formed on the inside of the first outer wall portion (13a) through at least one drain hole (17a) formed through the rear case 12, the drain hole (17a) is formed on the same line up and down the rear case ( 12) is composed of a semi-circular drain groove (17b) formed by penetrating the rim portion up and down.

The drain portion 17 is a mounting portion by securing a space between the rear case 12 and the parts of the dishwasher with the semi-circular drain groove 17b when the rear case 12 is closely attached to the outer part of the dishwasher. Leakage generated in (13) (detergent and moisture, etc.) is naturally discharged through the drain hole (17a) to the drain groove (17b).

Hereinafter, the operation of the detergent supplier for the dishwasher having the above-described configuration will be described.

First, when the rotating body 40 is rotated in one direction (clockwise on the drawing) by the motor 20, the push roller 43 disposed at the inlet 32 side of the hose 30 is the first outer wall portion 13a. The hose 30 is completely compressed while being rotated along the line, and the detergent in the hose 30 is transferred to the outlet 33 side and the detergent is sucked into the inlet 32.

When the rotation of the rotating body 40 is repeated in this way, the pair of push rollers 43 are rotated while sequentially pressing the connecting portion 31 of the hose 30, so that the pumping supply of detergent is made.

At this time, in the conventional detergent feeder, only one push roller 43 passes through the connection portion 31. As a reaction to the pressure being pushed by the push roller 43, the portion where the push roller 43 passed passes pressure inward. As it is received, it bends, and the flowability of the detergent decreases due to the decrease in the diameter of the flow path. In particular, there is a problem that the hose 30 easily breaks due to repeated bending of the connecting portion 31 when used for a long time.

Accordingly, the present invention immediately after the push roller 43 passes through the connecting portion 31, the rod portion 44A of the support roller 44 passes while pressing the connecting portion 31, and the other portion of the connecting portion 31 is inside. In addition to the support so as not to be bent, at the same time, the bent portion is pushed to spread, and as well as improving the flowability of the detergent, damage caused by the bend of the hose 30 is prevented.

That is, since the rod portion 44A has an outer diameter smaller than the outer diameter of the push roller 43, rather than directly pressurizing and discharging the detergent in the connecting portion 31, the connecting portion 31 is supported so that the hose is not bent inward. In particular, as the rod portion 44A presses the inner outer surface of the connecting portion 31 outwardly (ie, in the direction of the first outer wall portion 13a) without simply supporting the connecting portion 31, the connecting portion 31 ) By extending the bent portion of the support roller in the direction of the inner groove of the support roller to maintain the original shape, thereby preventing the damage of the hose 30 while improving the flow of detergent in the hose 30.

In particular, the present invention, when the push rollers 43 pass the connecting portion 31, the support roller 44 and the ribs 42 press and support the other parts of the connecting portion 31 is not pressed against the push roller 43 , By always maintaining the'U' shape of the connecting portion 31, it is possible to prevent malfunction of the rotating body 40 or damage to the hose 30 due to resistance due to bending of the connecting portion 31, so that the amount of detergent supplied Can be safely maintained in a quantitative manner.

On the other hand, the present invention, as described above, when the clearance portion (11S) is formed between the rotating body 40 and the front case 11, the rotating body 40 rotates at a certain speed or more, the rotating body 40 is the drive shaft ( 21) while moving toward the end of the end to relieve the pressure due to centrifugal force, the friction area between the shaft protrusion 16 and the shaft groove 41b is reduced due to the conical opening groove 16a, thereby preventing damage to parts due to thermal wear. As well as reducing, there is an effect that can increase the mobility of the rotating body (40).

Furthermore, the present invention changes the front-rear position of the rotating body 40 because both side flange portions 44B and 44C of the support roller 44 surround the front and rear outer surfaces of the connecting portion 31 together with the rod portion 44A. Even if this occurs, through the support roller 44, the connecting portion 31 is aligned and maintained in the same position as the rotating body 40 so as to improve the flowability of the detergent and further increase the effect of preventing damage to the hose 30. Can be.

In the above description of the present invention with reference to the accompanying drawings, the detergent supply for the dishwasher was mainly described, but the present invention can be variously modified, changed and replaced by those skilled in the art, and such modifications, changes and replacements are protections of the present invention. It should be construed as being within the scope.

10: housing 11: front case
12: rear case 13: mounting portion
14, 15: mounting hole 16: shaft projection
17: drain portion
20: motor 21: drive shaft
30: hose 31: connection
32: inlet 33: outlet
40: rotating body 41: shaft plate
42: rib 43: push roller
44: support roller

Claims (4)

A mounting portion 13 formed of a'U'-shaped first outer wall portion 13a and a second outer wall portion 13b connecting both ends of the first outer wall portion 13a, respectively, on both sides of the second outer wall portion 13b A housing 10 having a first inlet-side mounting hole 14 and a second outlet-side mounting hole 15 formed;
A motor 20 provided outside the rear case 12 of the housing 10 and having a drive shaft 21 fitted into the mounting portion 13;
Detergent supply hose (30) having'U' shaped connections (31), both ends of which are respectively fixed to the first mounting hole (14) and the second mounting hole (15) and supported inside the first outer wall portion (13a). ; And
Mounted to rotate in one direction by the drive shaft 21 in the mounting portion 13, respectively, the connection portion 31 is completely compressed during rotation to discharge detergent in the hose 30 to the outlet 33 during rotation. The push roller 43, and the push roller 43 are arranged spaced apart from each other by pressing the connecting portion 31 during rotation to prevent the bending of the connecting portion 31 and the supporting roller 44, and the agent 1 A pair of circular shaft plates 41 having a size corresponding to the inner diameter of the outer wall portion 13a, a pillar portion 41A connecting the centers of both shaft plates 41, and from the outer peripheral surface of the pillar portion 41A to the outside It includes a rotating body 40 that is arranged radially but has a plurality of ribs 42 disposed between the push roller 43 and the support roller 44.
The push roller 43 has a length corresponding to the diameter of the hose 30, the radius from the rotating shaft to the outer surface when the push roller 43 passes the connecting portion 31 of the hose 30 to the push roller 43 By the hose 30 is completely pressed by transferring the detergent in the hose 30 in the rotational direction of the rotating body 40 to discharge,
The support roller 44 has an outer diameter smaller than the diameter of the hose 30, and the outer surface of the connecting portion 31 bent inward in response to this when the push roller 43 passes through the connecting portion 31 of the hose 30 By supporting the support roller (44), press the bent portion to spread it to its original shape, preventing the shape of the connection part (31) from being completely deformed,
The rib 42 is formed for a dishwasher, characterized in that the outer end portion is formed to have a length in contact with the inner outer surface of the connection portion 31 of the hose 30, thereby assisting the bending prevention function of the support roller 44. Detergent supply.
According to claim 1,
The rotating body 40 includes a shaft hole 41a into which the drive shaft 21 is fitted, and a shaft groove 41b having an inner diameter larger than the shaft hole 41a along the front end side of the shaft hole 41a,
The housing 10 includes a shaft protrusion 16 protruding from the inner surface of the front case 11 and inserted into the shaft groove 41b,
The shaft protrusion 16 has a conical opening groove 16a whose inner diameter decreases from the inner end toward the outside, and when the rotating body 40 rotates, the bottom surface of the shaft groove 41b and the shaft protrusion 16 A detergent supply machine for a dishwasher, characterized in that the frictional resistance between them is reduced.
According to claim 1,
The rear case 12 is a detergent supply device for a dishwasher, characterized in that it comprises a drain portion (17) for leak discharge formed on the outermost side of the second outer wall portion (13b).
According to claim 1,
The support roller 44 is connected to the rod portion 44A that presses the inner outer surface of the hose 30, and protrudes outward from both end portions of the rod portion 44A to press the front and rear outer surfaces of the hose 30. And a pair of flange parts (44B) (44C).

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