KR20120126598A - Dishwasher - Google Patents

Abstract

PURPOSE: A dish washer is provided to selectively open a plurality of channels in a single spray arm and remove foreign materials remaining on the surface of the channel conversion part. CONSTITUTION: A dish washer comprises a tub, a spray arm, a chamber(55), a washing water supply part, and a channel conversion part(7). The channel conversion part includes a hollow body(71) with an open side for letting washing water into the chamber, a channel opening hole(73) which is formed at the top of the hollow body and selectively opens a part of channels according to the rotation angle of the hollow body, and a first slit(715) formed in the hollow body to let the washing water, moved between the outer periphery of the hollow body and the inner periphery of the chamber, into the hollow body.

Description

Dishwasher {Dishwasher}

The present invention relates to a dishwasher.

A dishwasher is a device that cleans dirt, such as food residues, on detergents and washing water on dishes and cooking utensils.

A common dishwasher includes a tub providing a washing space, a rack provided in the tub to accommodate a washing object, a spray arm spraying the washing water into the rack, a sump storing the washing water, and a washing water stored in the sump. It is common to include a supply channel for feeding sandstone.

The dishwasher having the above-described configuration sprays the washing water onto the washing object accommodated in the rack according to the washing course selected by the user to remove the dirt from the washing object, and the washing object having been removed can be dried by hot air.

The present invention is to solve the problem to provide a dish washing machine with improved washing power.

In addition, the present invention is to solve the problem to provide a dishwasher equipped with a plurality of washing water flow paths (channels) in the injection arm is spraying the washing water.

In addition, an object of the present invention is to provide a dish washer having a flow path switching unit for selectively opening a plurality of channels provided in one injection arm.

In addition, an object of the present invention is to provide a dishwasher capable of removing foreign substances remaining on the surface of the flow path switching unit.

The present invention, in order to solve the above problems, a tub that provides a space for the cleaning object is accommodated, a plurality of channels in which the washing water is divided flows, the injection hole for the washing water flowing along the channel is discharged toward the cleaning object direction A spray arm provided, a chamber provided to communicate with the plurality of channels, a washing water supply unit for supplying washing water to the chamber, and a flow path switching unit rotatably provided in the chamber, wherein the flow path switching unit includes washing water to the chamber. A hollow body having an open surface in an inflow direction, a channel opening hole provided at an upper surface of the hollow body and opening some channels of the plurality of channels according to a rotation angle of the hollow body, and an outer circumferential surface of the hollow body and the First sled provided in the hollow body so that the washing water moved between the inner circumferential surface of the chamber flows into the hollow body There is provided a dishwasher comprising a dish.

The first slit may be provided to be connected to an outer circumferential surface of the channel opening hole.

The dishwasher of the present invention includes an upper engaging portion provided on an inner upper surface of the chamber, a lower engaging portion provided on an inner lower surface of the chamber into which washing water is introduced, and an upper engaging portion so as to be spaced apart from the upper engaging portion by a predetermined interval so as to form the hollow body. The upper protrusion to rotate, the lower engaging portion may further include a engaging projection having a lower projection for rotating the hollow body.

In addition, the dishwasher of the present invention may further include a second slit provided between the outer circumferential surface of the hollow body and the engagement protrusion to allow the flow of the washing water.

In addition, the symmetry line of the first slit and the symmetry line of the second slit may be provided to be spaced apart from each other.

On the other hand, the dishwasher of the present invention is provided along the outer peripheral surface of the upper engaging portion provided on the inner upper surface of the chamber, the lower engaging portion provided on the inner lower surface of the chamber into which the wash water flows, the hollow body, but the washing water to the chamber Is introduced into the upper engaging portion, if the washing water does not flow into the chamber is engaged with the lower engaging portion to rotate the hollow body, provided between the outer peripheral surface of the hollow body and the engaging projection of the washing water It may further include a second slit capable of flow.

In this case, the symmetry line of the first slit and the symmetry line of the second slit are preferably provided to be spaced apart from each other.

The hollow body may further include an inclined surface, and the inner upper surface of the chamber may further include a chamber inclined surface in which the inclined surface is accommodated.

The present invention can achieve the effect of providing a dish washing machine with improved washing power.

In addition, the present invention can achieve the effect of providing a dish washer provided with a plurality of washing water flow paths (channels) in one spray arm to which the washing water is sprayed.

In addition, the present invention can achieve the effect of providing a dish washer having a flow path switching unit for selectively opening a plurality of channels provided in one injection arm.

In addition, the present invention can achieve the effect of providing a dishwasher capable of removing the foreign matter remaining on the surface of the flow path switching unit.

1 is a view showing the basic structure of the dishwasher of the present invention.
2 is a view of the injection arm provided in the dishwasher.
Figure 3 is a view showing a coupling structure of the injection arm, the chamber and the flow path switching unit.
4 is a perspective view of a flow path switching unit.
5 is a view showing an operation of the flow path switching unit.

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

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein.

On the other hand, the configuration or control method of the device to be described below is not intended to limit the scope of the present invention, but to describe the embodiment of the present invention, the same reference numerals are used throughout the specification the same components Indicates.

The dishwasher 100 of the present invention includes a tub 1 providing a washing space, a door 2 selectively opening and closing the washing space, and a rack 3 provided inside the tub to accommodate a washing object.

The rack 3 is provided to be pulled out to the front of the tub when the door 2 is open, so that the user can take out the rack to the front of the tub to accommodate the washing object.

On the other hand, the lower portion of the tub (1) may be further provided with a sump (4) for storing the washing water required for washing the washing object.

The sump (4) receives washing water through the sump water supply unit (41). The sump water supply unit (41) communicates the sump (4) with a water source (not shown) provided outside of the dishwasher (100). It may be provided as a water supply hose.

The sump (4) may also be provided with a sump discharge portion 43 for discharging the washing water stored in the sump to the outside of the sump, the sump discharge portion 43 is a drain hose 431 for communicating the sump and the outside of the dishwasher and drainage It may be provided with a pump 433.

On the other hand, the dishwasher of the present invention may be provided with a spray arm (5) which is provided inside the tub (1) for spraying the washing water to the washing object contained in the rack (3).

The injection arm 5 may be provided only at any one of the lower part and the upper part of the rack 3, and a plurality of spray arms 5 may be provided to spray washing water to the upper and lower parts of the rack 3, respectively.

The injection arm 5 may be provided to receive the washing water directly from the water supply provided on the outside of the dishwasher to spray the washing object, and to store the washing water stored in the sump 4 in a rack as shown in FIG. 1. It may be provided to spray to the washing target.

When the injection arm 5 is provided to spray the washing water stored in the sump, the injection arm 5 is in communication with the sump 4 through the washing water supply 6.

That is, the washing water supply unit 6 may be provided to include a supply passage 61 for communicating the injection arm 5 and the sump and a supply pump 63 for supplying the washing water stored in the sump to the injection arm 5. .

Hereinafter, the structure of the injection arm 5 will be described with reference to FIG. 2.

The injection arm 5 has a chamber 55 in communication with the wash water supply unit 6, a lower body 53 forming a flow path of the washing water supplied from the chamber, and a direction in which a washing target is located at an upper portion of the lower body. The upper body 51 is supplied with the washing water.

The lower body 53 is provided with a lower partition wall 531, and the lower partition wall divides the lower body inner space to form a flow path for washing water.

That is, the lower body 53 includes a plurality of channels 533 which are separated from each other by the lower partition wall 531, and FIG. 2 (b) includes a first channel 5331 and a second channel 5333. One lower body is shown as an example.

In addition, the lower body 53 is preferably provided to further include a chamber communication hole 535 for communicating each channel (5331, 5333) with the chamber 55.

The upper body 51 includes a plurality of injection holes 511 positioned above the lower body to discharge the washing water flowing along each of the channels 5331 and 5333 in the direction in which the washing object is located.

On the other hand, the injection hole 511 may be provided to discharge the washing water in a direction perpendicular to the upper surface of the upper body, the discharge angle of the washing water discharged through the injection hole forms an acute angle with respect to the upper surface of the upper body It may be provided to.

When the injection hole is provided such that the discharge angle of the washing water forms an acute angle with respect to the upper surface of the upper body, repulsive force is generated when the washing water is injected through the injection hole. Therefore, when the injection arm 5 is rotatably provided with respect to the supply passage 61, the injection arm 5 can be rotated without a separate driving device, thereby improving washing efficiency.

Furthermore, the upper body 51 is further provided with an upper partition 513 in contact with the lower partition 531 of the lower body 53 so that each channel provided in the injection arm is formed through the combination of the lower partition and the upper partition. It's okay.

The chamber 55 is provided in a lower direction of the lower body 53 provided with the chamber communication hole 535, and has a hollow bar shape body for communicating the washing water supply part 6 and the chamber communication hole 535. 551).

That is, one end of the body 551 may be connected to the bottom surface of the lower body 53, and the other end of the body 551 may be provided to communicate with the supply passage 61 of the washing water supply part 6.

On the other hand, the injection arm 5 may further include a connection pipe 58 provided between the body 551 and the supply passage 61 so as to rotate when the washing water is injected through the injection hole 511. Can be.

One end of the connecting pipe 58 is provided in the supply passage 61 and the other end of the connecting pipe is provided in the interior of the body 551, but in the center of the connecting pipe 58, the washing water flow passage ( 581) is preferred.

In the chamber 55, the flow path switching unit 7 may be provided to be rotatable to selectively open and close some of the plurality of chamber communication holes 535.

The flow path switching unit 7 may be provided to be rotatable through a separate rotating member, but may be rotatable by the water pressure of the washing water introduced into the chamber 55 through the supply passage 61 and the washing water passage 581. It may be provided.

When the flow path switching unit 7 is rotatably provided by the pressure of the washing water flowing into the chamber, the flow path switching unit 7 is provided in the shape of a hollow body 71 capable of linear reciprocating movement in the chamber 55. But may include an open surface 711 (see Fig. 5 (a)).

The open surface 711 moves the hollow body 71 toward the lower body 53 along the inner wall of the chamber when the washing water flows into the chamber 55, and the inner wall of the chamber when the washing water does not flow into the chamber 55. Along the lower body 53 is preferably provided to move in the direction away.

2 (c) shows a structure in which the washing water is introduced from the lower portion of the chamber 55, in which case the open surface 711 is preferably provided in the lower portion of the hollow body (71).

On the other hand, the channel opening hole 713 provided on one surface (the upper surface of the hollow body) of the hollow body 71 facing the open surface corresponding to the chamber communication hole 535 provided in the lower body 53 Is provided.

The channel opening hole 713 has only a part of the plurality of chamber communication holes 535 provided in the lower body when the hollow body 71 moves in the lower body 53 direction (when washing water flows into the chamber). It is preferably provided to open.

That is, the number of the channel opening hole and the number of the chamber communication hole may be provided differently, Figure 2 (b) is provided with four chamber communication holes 535 in the lower body 53 and 2 in the hollow body 71 The case where two channel opening holes 713 are provided is shown.

On the other hand, the two channel opening hole 713 may be provided to be adjacent to each other, as shown in Figure 2 (b) is preferably provided to be spaced apart from each other by 180 degrees. Therefore, whenever the hollow body 71 rotates by the fitting protrusion 73, the upper fitting portion 59, and the lower fitting portion 57, which will be described later, only a portion of the channels 5313 and 5333 may wash the washing water. I can supply it.

Further, the chamber 55 is provided to further include an upper engaging portion 59 and a lower engaging portion 57, and the upper engaging portion 59 and the lower engaging portion 57 are formed on the outer circumferential surface of the hollow body 71. ) May be further provided with a fitting protrusion 73 provided to be able to engage each.

The engaging projection 73 is the upper projection 731 is engaged to the upper projection 731 when the hollow body 71 moves in the direction of the lower body 53 by the washing water, when the washing water supply to the chamber is stopped It may be provided to include a lower protrusion 733 to be engaged to the lower engaging portion 59.

In this case, the shape of the upper engaging portion 59 and the upper projection 731 is provided in a concave-convex shape (toothed shape) that can be engaged with each other, but the hollow body in the process of engaging the upper engaging portion 59 and the upper projection 731. Preferably, 71 is provided to rotate a predetermined angle.

That is, as shown in FIG. 3B, when the flow path switching unit 7 moves toward the lower body 53, the vertex H of the upper protrusion 531 is the hypotenuse L of the upper engaging portion 59. It is preferably provided to move along the hypotenuse of the upper teeth after contact.

Therefore, the flow path switching unit 7 will be rotated in the process of moving the vertex (H) of the upper protrusion along the hypotenuse (L) of the upper engagement portion 59.

Shapes of the lower engaging portion 57 and the lower protrusion 733 are also provided in a concave-convex shape (toothed shape) that can engage with each other, so that the flow path switching part 7 rotates a predetermined angle in the process of engaging the lower engaging portion and the lower protrusion. It is preferred to be provided.

However, two channel opening holes 713 are provided at positions 180 degrees apart to sequentially open and close the first channel 5311 and the second channel 5333 at 90 degree intervals. In the injection arm structure of the flow path switching unit 7 is rotated 45 degrees when the upper engaging portion 59 and the upper projection 731 is engaged, the lower engaging portion 57 and the lower projection 733 is engaged. It is preferably provided to rotate 45 degrees in the same direction.

Therefore, when the wash water flows into the chamber through the supply passage 61, the hollow body 71 moves in the direction of the lower body 53 along the inner wall of the chamber 55, and the hollow body 71 has the upper protrusion 731. ) Rotates 45 degrees counterclockwise while being engaged with the upper engagement portion 59 provided in the chamber 55, and the channel opening hole 713 provided in the upper surface of the hollow body 71 is the hollow body 71. When it is completely rotated is in communication with some of the plurality of chamber communication holes (535).

Subsequently, when the supply pump 63 stops supplying the washing water to the supply passage 61, the hollow body 71 moves along the chamber inner wall in the direction of the bottom surface of the chamber (away from the lower body), and the hollow body 71. The lower protrusion 733 is rotated 45 degrees counterclockwise while being engaged to the lower engaging portion (57).

The counterclockwise rotation of the above-described hollow body 71 is only a rotation direction arbitrarily set for convenience of description, so that the uneven shape of the engaging protrusion, the upper engaging portion and the lower engaging portion is designed so that the hollow body rotates clockwise. It is okay.

On the other hand, between the inner circumferential surface (inner wall) of the chamber 55 and the outer circumferential surface of the flow path switching unit 7 there is a gap such as the tolerance required in the design, so in the case of the dishwasher including only the above-described configuration, the chamber 55 and the flow path switching Foreign matter is caught in the space between the parts (7) there is a possibility that hinder the linear reciprocating motion and rotational movement of the hollow body (71).

The wash water supplied from the wash water supply unit 6 to the chamber 55 is wash water stored in the sump 4, and the wash water sprayed from the spray arm 5 during dish washing is collected.

Therefore, as dishwashing proceeds, the amount of dirt removed from the object of washing increases in the wash water collected on the sump, and the dirt contained in the wash water is a space between the outer circumferential surface of the hollow body 71 and the inner circumferential surface of the chamber 55. In the process of flowing may remain between the inner peripheral surface of the chamber and the outer peripheral surface of the flow path switching unit.

In addition, the washing water moved to the upper portion of the hollow body 71 through the space between the outer circumferential surface of the hollow body 71 and the inner circumferential surface of the chamber 55 is mostly lowered through the chamber communication hole 535 provided in the lower body 53. The body 53 is introduced into the body 53, but as the hollow body 71 moves toward the lower body 53, the space in the upper portion of the hollow body becomes narrower, so that foreign matters contained in the wash water remain in the chamber.

The present invention further includes a first slit 715 (see FIGS. 2 and 4) provided in the hollow body 71 to solve the above-described problem.

The first slit 715 is preferably provided along the lengthwise or circumferential direction of the hollow body 71 and cut through the hollow body 71.

Therefore, the washing water introduced into the chamber 55 is formed between the outer circumferential surface of the hollow body 71 and the inner circumferential surface of the chamber 55 before the upper protrusion 731 of the fitting protrusion and the upper fitting portion 59 are completely engaged. Since the inside of the hollow body through the one slit 715, even if the upper space of the hollow body 71 is narrowed, it is possible to minimize the foreign matter contained in the wash water on the inner peripheral surface of the chamber 55 or the outer peripheral surface of the hollow body.

Furthermore, even when the upper engagement portion 59 and the upper protrusion 731 are completely engaged, the upper engagement portion 59 and the upper protrusion 731 may have a gap so as to minimize foreign matter remaining in the chamber 55. G, see Fig. 3) is preferably provided to be engaged.

As shown in FIG. 3, when the upper engaging portion 59 and the upper protrusion 731 are engaged, if a gap G is provided between the upper engaging portion and the upper protrusion, the upper engaging portion 59 and the upper protrusion 731 are provided. Even if is completely engaged, the washing water flowing through the space between the outer peripheral surface of the hollow body 71 and the inner peripheral surface of the chamber 55 can flow into the hollow body 71 through the first slit 715.

Therefore, not only the foreign matter contained in the washing water does not remain in the chamber, but also the effect of cleaning the foreign matter remaining in the chamber and the outer peripheral surface of the hollow body can be expected.

On the other hand, the first slit 715 is provided with the outer circumferential surface of the hollow body is cut off may be provided to be connected to the outer circumferential surface of the channel opening hole 713.

4 shows another embodiment of the flow path switching unit 7 provided in the dishwasher of the present invention, the flow path switching unit 7 according to the present embodiment between the outer peripheral surface of the hollow body 71 and the engaging projection 73. It is characterized in that the second slit 77 is further provided.

To this end, the engaging protrusion 73 is preferably fixed to the outer circumferential surface of the hollow body 71 through a fixing rib 75 having a predetermined length.

On the other hand, the symmetry line (A1, reference line of symmetry) of the first slit 715 is preferably provided to be spaced apart from the symmetry line (A2) of the second slit (77). The foreign matter remaining on the outer circumferential surface of the hollow body by allowing the washing water flowing through the second slit 77 to move in the circumferential direction of the hollow body 71 and then flowing into the hollow body 71 through the first slit 715. For cleaning.

When the second slit 77 is provided in the flow path switching unit 7, the gap G may not be provided between the upper engaging portion 59 and the upper protrusion 731. However, if the gap G is provided between the upper engaging portion and the upper protrusion together with the second slit 77, foreign matter may be prevented from remaining between the outer peripheral surface of the engaging protrusion 73 and the inner peripheral surface of the chamber 55. You can expect the effect.

Meanwhile, the flow path switching unit 7 further includes an inclined surface 717, and further includes a chamber inclined surface 555 having an inclined angle corresponding to the inclined angle of the inclined surface 717 at the upper end of the chamber 55. can do.

The inclined surface 717 and the chamber inclined surface 555 are configured to facilitate communication between the channel opening hole 713 and the chamber communication hole 535 when the wash water flows into the chamber 55. ) Is provided along the outer circumferential surface at the top of the hollow body 71 and the chamber inclined surface 555 is preferably provided between the upper engaging portion 59 and the chamber communication hole (535).

On the other hand, the inclined surface 717 may be provided on the outer circumferential surface of the engagement protrusion 73, in this case, the chamber inclined surface 555 is preferably provided on the upper end of the inner circumferential surface of the chamber 55.

Hereinafter, an operation process of the flow path switching 7 will be described with reference to FIG. 5.

When the supply pump 63 does not operate, since the washing water stored in the sump 4 is not supplied into the chamber 55, the lower protrusion 733 of the fitting protrusion provided in the flow path switching unit 7 is a lower fitting portion ( 57) is maintained (Fig. 5 (a)).

When the lower protrusion 733 is engaged with the lower fitting portion 57, the channel opening hole 713 is at a position spaced 45 degrees from the chamber communication hole 535.

On the other hand, when the supply pump 63 is operated and the washing water is supplied into the chamber, the washing water flows into the open surface 711 of the hollow body 71 so that the flow path switching unit 7 is lower along the inner circumferential surface of the chamber 55. The body 53 is moved in the direction.

When the flow path switching unit 7 moves in the upper direction of the chamber 55, the upper protrusion 731 of the engaging protrusion 73 rotates the hollow body 71 by 45 degrees while contacting the teeth of the upper engaging portion 59. The channel opening hole 713 provided spaced at 180 degree intervals on the upper surface of the hollow body opens two chamber opening holes facing each other among the chamber opening holes 535 spaced at 90 degree intervals (first Supplying wash water to either the channel or the second channel).

In this case, the chamber inclined surface 555 provided in the upper portion of the chamber guides the movement of the inclined surface 717 provided in the hollow body 71 so that the channel opening hole 713 and the lower body provided in the flow path switching unit 7 are provided. Communication of the chamber opening hole 535 provided at 53 will be facilitated.

Through the above-described process, the flow path switching unit 7 sequentially supplies the washing water supplied from the supply pump 63 to the first channel 7311 and the second channel 7333, and the washing water introduced into each channel is upper It is sprayed to the cleaning object through the injection hole 511 provided in the body (51).

Meanwhile, some of the washing water introduced into the chamber 55 by the supply pump 63 is a space between the outer circumferential surface of the hollow body 71 and the inner circumferential surface of the chamber 55, between the upper protrusion 731 and the upper engaging portion 59. It moves to the first slit (7115) through the gap (G) of the cleaning process to clean the foreign matter remaining on the inner peripheral surface of the chamber and the outer peripheral surface of the flow path switching unit.

In addition, some of the washing water introduced into the chamber by the supply pump passes through the second slit 77 and moves along the circumferential outer circumferential surface of the hollow body 71 and then moves to the first slit 715. The foreign substances remaining on the outer circumferential surface of the flow path switching unit 7 and the inner circumferential surface of the chamber are cleaned.

The present invention may be practiced in various forms and is not limited to the above-described embodiment. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: dishwasher 1: tub 2: door
3: rack 4: sump 41: sump water supply
43: sump drainage portion 5: jetting arm 51: upper body
53: lower body 5331: first channel 5333: second channel
535: chamber communication hole 55: chamber 57: lower mating portion
59: upper engagement portion 6: washing water supply portion 61: supply passage
63: supply pump 7: flow path switching portion 71: hollow body
711: open side 713: channel opening hole 715: first slit
717: slope 73: engaging projection 731: upper projection
733: lower protrusion 75: fixed rib 77: second slit

Claims (8)

Tub for providing a space to be cleaned object;
A spray arm having a plurality of channels in which washing water is divided and flowing, and spray holes for washing water flowing along the channel to be discharged toward the washing target;
A chamber provided to communicate with the plurality of channels;
A washing water supply unit supplying washing water to the chamber;
And a flow path switching unit provided to be rotatable inside the chamber.
The flow path switching unit
Hollow body having an open surface in the direction in which the wash water flows into the chamber, a channel opening hole provided on the upper surface of the hollow body and opening some channels of the plurality of channels according to the rotation angle of the hollow body, the hollow And a first slit provided in the hollow body such that the washing water flowing between the outer circumferential surface of the body and the inner circumferential surface of the chamber flows into the hollow body. The method of claim 1,
And the first slit is connected to an outer circumferential surface of the channel opening hole. The method of claim 1,
An upper engagement portion provided on an upper surface of the chamber;
A lower mating portion provided on a lower surface of the chamber into which washing water is introduced;
And an engaging protrusion having an upper protrusion engaged with the upper engaging portion to be spaced a predetermined distance to rotate the hollow body, and having a lower protrusion engaged with the lower engaging portion to rotate the hollow body. syringe. The method of claim 3,
And a second slit provided between the outer circumferential surface of the hollow body and the engagement protrusion to allow the flow of washing water. 5. The method of claim 4,
And a line of symmetry of the first slit and a line of symmetry of the second slit are spaced apart from each other. The method of claim 1,
An upper engagement portion provided on an upper surface of the chamber;
A lower mating portion provided on a lower surface of the chamber into which washing water is introduced;
A fitting protrusion provided along an outer circumferential surface of the hollow body and being fitted to the upper fitting portion when the washing water is introduced into the chamber, and being fitted to the lower fitting portion when the washing water is not introduced into the chamber;
And a second slit provided between the outer circumferential surface of the hollow body and the engagement protrusion to allow the flow of washing water. The method according to claim 6,
And a line of symmetry of the first slit and a line of symmetry of the second slit are spaced apart from each other. The method of claim 1,
The hollow body further includes an inclined surface,
The inner upper surface of the chamber dishwasher further comprises a chamber inclined surface is accommodated.

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