KR20070078315A - Dish washer - Google Patents

Abstract

A dish washer is provided to improve a washing force of a dish stored at a lower rack by connecting upper injection arms to both ends of a branch pipe and rotating the injection arms separately. A dish washer includes a body, storing racks, a sump, an upper guiding pipe(50), a branch pipe(60), an upper injection arm(70), and a lower injection arm. The body forms an exterior appearance of the dish washer, and includes a tub for washing a dish inside. The storing racks store the polluted dish, and are installed in the tub of the body. The sump collects and supplies a washing water to the inside of the tub, and is installed at a predetermined space formed at a bottom of the body. The upper injection arm is installed at a bottom of the upper rack between the upper rack and the lower rack inside the tub so as to wash efficiently and includes a neck part(72) which is rotatably inserted to the branch pipe and a body(71) which is extended to opposite direction of the branch pipe and has larger circumference size than that of the branch pipe.

Description

Dishwasher {dish washer}

1 is a side cross-sectional view showing a conventional dishwasher

Figure 2 is a side cross-sectional view showing a dishwasher of the present invention

3 is an exploded perspective view of part “A” of FIG. 2;

4 is an enlarged view illustrating an exploded view of part “B” of FIG. 3;

5a and 5b is a schematic view showing the operating state of the upper injection arm

6A and 6B are cross-sectional views illustrating a line I-I of FIG. 5A, showing a neck portion before and after the neck portion is rotated.

Description of the main symbols in the drawings

10: body 11: tub

20: upper rack 30: lower rack

40: sump 50: guide

60: branch pipe 61: home

70: upper injection arm 71: body

71a: injection nozzle 72: neck portion

73: projection 73a: receiving groove

73b: coil spring 73c: adjusting member

80: lower injection arm 90: lower guide tube

The present invention relates to a dishwasher, and more particularly to a spray arm for spraying the washing water for dishwashing.

In general, the dishwasher is a device that removes food and dirt remaining in the used dishes by chemical decomposition and control of mechanical pressure.It is equipped with various functions such as rinsing, sterilization and drying as well as dish washing. There is a growing trend.

An example of a conventional dish washer will be described with reference to FIG. 1.

The dishwasher includes a tub 1 through which dishes are washed, and an upper rack 2 and a lower rack 3 capable of storing dishes while being installed to be pulled out of the tub 1 in the tub 1. And a sump assembly 4 installed in the bottom space of the tub 1 for collecting, storing and supplying the washing water, and spraying the washing water onto the dishes stored in the upper rack 2 and the lower rack 3, respectively. It consists of an upper injection arm 5 and a lower injection arm 6.

At this time, the sump assembly (4) is provided with an upper guide pipe (7) which is a conduit for supplying the washing water to the upper injection arm (5), the lower guide tube (8) for supplying the washing water to the lower injection arm (6) ) Is installed.

Hereinafter, the state in which the conventional dish washer according to the above configuration is operated.

When the dishwasher is operated after storing the dirty dishes in the upper and lower racks 5 and 6 provided in the tub 1, the washing water from the sump assembly 4 is applied to the upper guide tube 7 and the lower guide tube 8. It is supplied along the upper injection arm 5 and the lower injection arm (6).

Thereafter, the upper injection arm 5 and the lower injection arm 6 supplied with the washing water spray the washing water upward toward the contaminated tableware.

Thereafter, the washing water sprayed on the dishware flows down to the bottom surface of the tub 1 and is recollected by the sump assembly 4, and the recollected washing water is supplied to the spraying arms 5 and 6 again with foreign substances filtered.

Through the above-described circulation process, the dishware is washed by the dishwasher.

However, the above conventional dishwasher has the following problems.

Tableware stored in the upper rack (5) and the lower rack (6) of the dishwasher is different in degree of contamination, respectively, according to the degree of contamination and the amount of washing water sprayed from the spray arms (5,6) The need to differentiate the injection direction was required.

That is, in the structure of the spray arms 5 and 6 installed in the conventional dishwasher, the upper rack 2 is always fixed because the direction of the nozzle for ejecting the washing water is fixed in the upward structure from the spray arms 5 and 6. And the phenomenon that the washing water concentrated only on the bottom side of the lower rack (3) occurred.

Due to this, as the washing water is not evenly distributed to the contaminated tableware and is biased to only one side, a problem may occur in the case of the tableware with a high degree of contamination, which may be less washed.

The present invention has been made to solve the above problems, an object of the present invention is to be able to selectively control the amount of washing water and the spraying direction of the washing water sprayed to each of the dishes according to the degree of contamination of the tableware. .

In order to achieve the above object, the present invention, the upper guide pipe which is a conduit for guiding the wash water collected in the sump to the tub by the washing pump; A branch pipe connected to an end of the upper guide pipe and formed of a hollow cylindrical shape; And, the upper portion consisting of a neck portion rotatably configured while being inserted into the branch pipe, the body extending from the neck portion in the opposite direction of the branch pipe and having a circumference larger than the size of the circumference of the branch pipe is installed nozzle Sandstone: Provides a dishwasher consisting of.

At this time, at least one or more protrusions are formed in one of the branch pipes and the neck portion, and grooves corresponding to the protrusions are formed in the other portion, and the protrusions are grooves when the neck portion is rotated while being inserted into the branch pipe. It is preferable to be configured to be fitted in the.

In addition, the protrusion has an inclined shape receiving groove having a smaller width than the width of the bottom surface and an elastic member provided inside the receiving groove, and only a portion of the protrusion is elastically supported outside of the receiving groove. It is preferably made of a sphere-shaped control member installed to be exposed to.

In addition, the upper injection arm is preferably installed at each end of the branch pipe.

Hereinafter, a dishwasher according to the present invention will be described with reference to FIGS. 2 to 6b as follows.

The dishwasher is largely the main body 10, the storage racks 20 and 30, the sump 40, the upper guide pipe 50, the branch pipe 60, the upper injection arm 70 and the lower injection arm It consists of 80.

The main body 10 forms an external appearance of the dishwasher and is provided with a tub 11 inside which the dishes are washed.

In addition, the front surface of the main body 10 is provided with a door (D) so that the opening and closing of the tub 11 can be made selectively.

In addition, the storage rack serves to store the contaminated tableware and is installed in the tub 11 of the main body 10.

At this time, the storage rack is installed in this stage at the top and bottom of the tub 11, the upper storage rack 20 is installed in the upper portion in the tub 11, and the lower storage rack (installed in the lower portion in the tub 11 ( 30).

In addition, the sump 40 collects washing water and supplies the wash water into the tub 11 and is installed in a predetermined space formed at the bottom of the main body 10.

At this time, the sump 40 is provided with a washing pump (not shown) for pumping the collected washing water to supply to the injection arm.

In addition, a lower guide tube 90 is installed above the sump 40 to be connected to the lower injection arm 80.

In addition, the upper guide tube 50 is a conduit for guiding the wash water collected in the sump 40 to the upper injection arm 70 by the washing pump, one end of which is connected to the washing pump and the other end of the tub 11. It is connected to the branch pipe 60 installed on the upper side.

In addition, the branch pipe 60 serves to branch the washing water supplied along the upper guide pipe 50 to the upper injection arm 70.

In addition, the branch pipe 60 is connected to the end of the upper guide pipe 50 in a direction perpendicular to the upper guide pipe 50, it is made of a hollow cylindrical.

At this time, the branch pipe 60 is configured to penetrate so that the upper injection arm can be fitted to both ends.

Although not shown, when only one upper injection arm 70 is fitted to one end of the branch pipe 60, the other end is closed.

In the present invention, the upper injection arm 70 is coupled to both ends of the branch pipe 60, respectively.

At this time, a plurality of grooves 61 are formed along the inner circumferential surface of the inner circumferential surface close to the end of the branch pipe 60.

In addition, the position of the branch pipe 60 is preferably disposed at the bottom of the upper storage rack (20).

This is to arrange the upper injection arm 70 connected to the branch pipe 60 at the bottom of the upper rack 20.

That is, by placing the upper injection arm 70 at the bottom of the upper rack 20, the upper injection arm 70 is disposed between the upper rack 20 and the lower rack 30 in the tub (11). As a result, an efficient washing may be performed in washing dishes placed in the upper rack 20 or dishes placed in the lower rack 30.

And, the upper injection arm 70 serves to inject the washing water supplied from the sump 40 at high pressure toward the dirty dishes.

The upper injection arm 70 is configured to be inserted into both ends of the branch pipe (60), respectively.

The upper injection arm 70 is composed of a body 71 and the neck portion 72.

One surface of the body 71 is provided with a plurality of injection nozzles (71a). The spray nozzle 71a serves to spray the washing water supplied into the body 71 at a high pressure.

A lower nozzle (not shown) is installed at the opposite end of the neck portion 72 of the other surface of the body 71, and the upper injection arm 70 rotates naturally due to the washing water sprayed at high pressure through the lower nozzle. .

In addition, one end of the neck portion 72 is formed integrally with the body 71, the other end is configured to be inserted into the end end of the branch pipe (60).

Since the branch pipe 60 has a cylindrical shape, the neck portion 72 may also have a cylindrical shape in order to be smoothly inserted into the branch pipe 60.

In this case, when the neck portion 72 is inserted into the branch pipe 60, the neck portion 72 corresponds to the groove 61 installed on the inner circumferential surface of the branch pipe 60 so as to be rotated in stages. The protrusion 73 is provided.

The protrusion 73 is supported by a plurality of accommodation grooves 73a formed along the outer circumferential surface of the neck portion 72, an elastic member 73b provided in the accommodation groove 73a, and the elastic member 73b. A part thereof consists of a sphere-shaped adjusting member 73c which is exposed to the outside of the receiving groove.

At this time, the width of the inlet portion of the receiving groove (73a) is preferably formed smaller than the diameter of the adjustment member (73c).

This is to prevent the adjustment member 73c inserted into the accommodation groove 73a from being easily removed to the outside of the accommodation groove 73a.

In addition, the adjustment member 73c is preferably made of a synthetic resin material having an elastic force to be able to fit inside through the inlet of the receiving groove (73a).

In addition, the elastic member 73b is preferably a coil spring that allows the adjustment member 73c to be pushed while having an elastic force when a predetermined amount of force is applied to the adjustment member 73c.

In addition, the lower injection arm 80 serves to eject the washing water at a high pressure toward the dishes stored in the lower rack and is installed at the bottom of the lower rack 30.

At this time, the lower injection arm 80 is directly connected to the lower guide tube 90 installed in the sump 40, it is preferable that it is configured in one piece.

A plurality of spray nozzles 71a are installed on the upper surface of the lower spray arm 80 to eject the washing water at high pressure, and the lower nozzles may be rotated at both ends of the lower surface so that the lower spray arm 80 may be rotated by the hydraulic pressure of the washing water. These are each installed.

In this case, the structure of the lower injection arm 80 may also be configured to be rotatable like the upper injection arm 70.

On the other hand, the adjustment member 73c of the protrusions 73 and the grooves 61 of the branch pipes 60 are more preferable the number thereof.

This is to allow the rotation of the upper injection arm 70 to be more diversified by the rotation of the upper injection arm 70 little by little by the frequent interference of the plurality of control members 73c and the groove 61.

Hereinafter, the coupling and the action of the upper injection arm by the above configuration will be described.

First, the coil springs 73b are respectively inserted into the plurality of receiving grooves 73a formed on the outer circumferential surface of the neck portion 72 of the upper injection arm 70.

Next, the adjustment member 73c is inserted into the receiving groove 73a, respectively. The adjustment member 73c is naturally supported by each coil spring 73b inserted into the accommodation groove 73a.

At this time, since the size of the diameter of the control member (73c) is formed larger than the size of the inlet portion of the receiving groove (73a), the adjusting member (73c) is press-fit into the interior of the receiving groove (73a).

As a result, a part of the adjusting member 73c is supported by the coil spring 73b provided in the receiving groove 73a, and a part of the opposite adjusting member 73c not supported by the coil spring 73b is accommodated in the receiving groove. It is exposed to the outside of the receiving groove (73a) while being caught in the inlet portion (73a).

At this time, the adjustment member (73c) is moved with an elastic force in the inner space of the receiving groove (73a) by the coil spring (73b).

Next, the neck portion 72 provided with the projection portion 73 is inserted into both ends of the branch pipe 60, respectively.

At this time, each adjustment member 73c is pushed into the interior of the receiving groove 73a while interfering with the inlet of the branch pipe (60).

Thereafter, as the neck portion 72 is continuously inserted into the branch pipe 60, each of the adjustment members 73c reaches the groove 61 in the branch pipe 60, and the coils supporting the adjustment member 73c are provided. Each adjustment member 73c protrudes out of the receiving groove 73a by the elastic force of the spring 73b and is seated in each groove 61.

As a result, the coupling between the upper injection arm 70 and the branch pipe 60 is completed.

Hereinafter, the operation of the upper injection arm installed in the dishwasher will be described with reference to FIGS. 5A and 5B.

Contaminated dishes are stored in the upper rack 20 and the lower rack 30 provided in the dishwasher.

At this time, the lower rack 30 is housed in a high degree of contamination.

Next, the injection nozzle 70 of any one of the upper injection arms 70 coupled to both ends of the branch pipe 60 is rotated so that the injection nozzles 71a face the lower rack 30.

6A and 6B, the process is applied to the upper injection arm 70 in order to rotate the upper injection arm 70. The process is carried out in the groove 61 in the branch pipe 60. The adjusting member 73c is detached from the groove 61 and is seated again in the other groove 61 in close proximity.

By repeating this process, any one of the upper injection arms 70 is rotated until the injection nozzles 71a of the upper injection arms 70 face the lower rack 30.

As a result, the washing water of the lower injection arm 80 is sprayed from the bottom of the lower rack 30, and the washing water of the upper injection arm 70 is sprayed from the upper part of the lower rack 30. The injection amount is increased.

Therefore, it is possible to efficiently wash the dishes with a high degree of contamination contained in the lower rack 30.

At this time, the washing of the dishes stored in the upper rack 20 is stored in the upper and lower racks (20, 30) due to the spray nozzle (71a) is the other upper injection arm (70) that does not face the lower rack (30) Washing of the cutlery proceeds simultaneously.

In addition, as can be seen through Figure 5b, when the amount of contaminated tableware can be stored in one of the lower rack 30, all of the upper injection arm 70 by rotating the injection nozzle 71a is all lower rack 30 It can also be used facing).

Thereby, washing | cleaning of tableware becomes effective at washing tableware.

According to the dishwasher according to the present invention, by connecting the upper injection arms to both ends of the branch pipe and configured to rotate around the branch pipe, respectively, the washing power of the dishes stored in the lower rack can be further improved. do.

That is, not only the washing water of the lower injection arm sprayed toward the lower rack, but also the washing power sprayed through the upper injection arm rotated to spray the lower nozzle toward the lower rack is to maximize the washing power of the dishes contained in the lower rack.

Accordingly, only dishware having a high degree of contamination may be stored in the lower rack separately and washed to efficiently wash the dishes.

In addition, by forming a plurality of grooves on the inner circumferential surface of the branch pipe and forming a plurality of protrusions on the outer circumferential surface of the upper injection arm neck portion so as to correspond thereto, it is possible to variously set the rotation direction of the upper injection arm.

Claims (4)

An upper guide pipe which is a conduit for guiding the washing water collected in the sump to the tub by the washing pump; A branch pipe connected to an end of the upper guide pipe and formed of a hollow cylindrical shape; And, An upper injection arm comprising a neck portion rotatably inserted while being inserted into the branch pipe, and a body in which a nozzle is installed while extending in the opposite direction of the branch pipe from the neck and having a circumference greater than the size of the circumference of the branch pipe. Dishwasher is configured to include. The method of claim 1, At least two protrusions are formed at one of the branch pipes or the neck part, and grooves corresponding to the protrusions are formed at the other part, and the protrusions fit into the grooves when the neck part is rotated while being inserted into the branch pipes. Dishwasher, characterized in that configured to be combined. The method of claim 2, The protrusion part Inclined groove with smaller entrance width than floor width An elastic member provided inside the receiving groove; And a spherical shape adjusting member installed to be elastically supported by the elastic member and partially exposed to the outside of the receiving groove. The method of claim 1, The upper spray arm is provided in each of the both ends of the branch pipe dishwasher, characterized in that installed.

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