KR100232276B1 - Dishwasher - Google Patents

Abstract

The present invention relates to a dish washer that automatically washes and rinses dishes, and an object thereof is to provide a dish washer capable of washing dishes without washing stains even when the arm is rotated in one direction.

To this end, the dishwasher of the present invention has a long arm rotatably installed in the cleaning chamber, and sprays water from a plurality of nozzles disposed in the arm, and washes the dishes placed in the cleaning chamber by the sprayed water. To

A predetermined nozzle among a plurality of nozzles is provided with a first injection hole and a second injection hole for injecting water in two different directions, and the water injected from the first injection hole is sprayed toward the vertically upward from the arm, and the second The water injected from the injection port is characterized in that the injection in the cross direction with respect to the longitudinal direction of the arm toward the inclined upward.

Description

dish washer

The present invention relates to a dishwasher which automatically washes and rinses dishes.

Background Art Conventionally, dishwashers have been known in which water splashed into the bottom of the washing chamber is pumped and fed to a nozzle, and water is sprayed from the nozzle to wash dishes placed in the washing chamber.

Some of such dishwashers have nozzles arranged on a rotatable arm to spray water while inverting the arm (see Japanese Patent Laid-Open No. 2-305538, for example). The inversion of the arms is such that the dishes placed are evenly washed by the jetting water from the nozzles. That is, when the arm is rotated only in one direction, the sprayed water from the nozzle is almost blown out on one surface of the tableware, and washing stains are generated on the tableware. In particular, washing stains often occur in bowl-shaped dishes such as tea cups.

However, in the configuration of inverting the arm, a complicated mechanism for inverting the arm is required, and in some cases, it is necessary to stop the feeding of the washing water once in order to invert the arm, thereby causing a problem such as a long cleaning time. .

Accordingly, an object of the present invention is to solve the above technical problem, and to provide a dish washer capable of washing dishes without washing stains even when the arm is rotated in one direction.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view seen from the right side showing an internal configuration of a dish washing machine according to an embodiment of the present invention.

2 is a plan view when the inside of the washing chamber provided in the dish washing machine is viewed from above.

FIG. 3 is a cross-sectional view when the arm shown in FIG. 2 is cut at the cutting line III-III. FIG.

Fig. 4 is a diagram showing the cleaning chamber as seen from above the dish basket, showing the positional relationship between the rotational trajectory of the nozzle for injecting water in two directions and the dish.

Fig. 5 is a diagram showing a state in which a fountain flows into a mug to explain the function of a nozzle for spraying water in two directions.

<Explanation of symbols for the main parts of the drawings>

13: washing room

14: Tableware

14a: teacup

16: arm

37: water supply shaft

41 to 47: nozzle

48, 49: injection hole

The dishwasher according to claim 1 for achieving the above object has a long arm rotatably provided in the cleaning chamber, and sprays water from a plurality of nozzles arranged in the arm, and the dishwasher is placed in the cleaning chamber by the sprayed water. In the dishwasher for cleaning the first nozzle, a plurality of nozzles are formed in the first nozzle and the second injection port for spraying water in two different directions, the water injected from the first injection port is approximately vertically upward from the arm Is injected toward, and the water injected from the second injection port is characterized in that the injection in the cross direction with respect to the longitudinal direction of the arm toward the inclined upward.

According to the invention of claim 2, the water jetted from the first jetting port is blown out mainly to the outer surface of the bowl-shaped tableware placed in the cleaning chamber, and the water jetted from the second jetting port is directed to the bowl-shaped tableware. A dishwasher according to claim 1, which is mainly flushed with its inner surface.

According to the structure of Claim 1, spraying water is sprayed in two different directions from the nozzle in which the 1st injection port and the 2nd injection port were formed. That is, water is sprayed toward the vertical direction substantially in the 1st injection port, and water is injected in the cross direction with respect to the longitudinal direction of an arm at the inclination upper direction at the 2nd injection port. Specifically, as described in claim 2, the water sprayed from the first jetting port is blown out to the outer surface of the mug or the like, and the water sprayed from the second jetting port is blown out to the inner surface of the mug or the like.

Thus, since water is sprayed on both the outer surface and the inner surface of the bowl-like utensils such as a mug, even if the arm is rotated only in one direction, both surfaces of the bowl-shaped utensils such as a mug can be washed, so It does not happen. In addition, if the arm is rotated only in one direction, a complicated mechanism for inverting the arm is unnecessary, so that the cost of the device can be reduced. And since the water supply to a nozzle does not need to be interrupted when inverting an arm, the time required for washing | cleaning can be shortened.

The invention according to claim 3 is the dish washing machine according to claim 1, wherein the first injection port and the second injection port are long injection holes along the length direction of the arm, and are arranged in parallel with each other.

According to the structure of Claim 3, for example, the fan-shaped fountain flows unfolded in the longitudinal direction of the arm, respectively, in the first injection port and the second injection port. Therefore, it is possible to clean a wide range by the water injected from the first injection port and the second injection port. In addition, since the jetted water jetted from the first injection port and the second injection port is unlikely to interfere with each other, the injection power is weakened and the cleaning power is not lowered. Therefore, good washing power can be ensured.

The invention according to claim 4 has a long arm rotatably provided in the cleaning chamber, and sprays water from a plurality of nozzles arranged in the arm, and the dish washing machine for washing dishes placed in the cleaning chamber by the sprayed water. The nozzles arranged on the arm in each of the one and the other of the arm with respect to the rotational center of the arm are different from each other in the shape of the dishwasher.

According to the structure of Claim 4, the nozzle of the same shape does not exist in each of one side and the other side of an arm with respect to the rotation center of an arm. Therefore, since many kinds of fountains can be generated, it is possible to clean all the dishes by setting the positional relationship between the dishes and the nozzles so that the fountains suitable for the shape of the dishes are flushed out.

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is described in detail with reference to an accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side sectional view seen from the right side showing an internal configuration of a dish washing machine according to an embodiment of the present invention.

The dishwasher includes a box-shaped housing 11 having an opening on the front surface, an openable and open door 12 that can block the front opening of the housing 11, and a cleaning chamber 13 partitioned within the housing 11. Equipped. In the cleaning chamber 13, the dish basket 15 for accommodating and holding the tableware 14 as a to-be-cleaned object through the front opening of the housing 11 can be inserted and removed. Also shown in FIG. 1 is a mug 14a as a tableware 14. And the arm 16 which injects water with respect to the tableware 14 in the dish basket 15 is arrange | positioned below the dish basket 15 and the bottom of the washing chamber 13 is arrange | positioned. Moreover, the heater 17 (refer FIG. 2) is provided in the bottom part of the washing | cleaning chamber 13.

A water supply port 18 is formed on the rear surface of the cleaning chamber 13. A water supply pipe 19 is connected to the water supply port 18, and the water sent from the water supply or the like not shown through the water supply pipe 19 is supplied into the cleaning chamber 13 via the water supply port 19. The water supplied into the washing chamber 13 collects at the bottom of the washing chamber 13 and is heated by the heater 17 to become hot water. In the middle of the water supply pipe 19, a water supply valve 20 for controlling the supply of water to the cleaning chamber 13 is provided. As the water supply valve 20, for example, a solenoid valve is used.

The pump apparatus 23 is provided below the washing | cleaning chamber 13. The pump device 23 includes a housing 23a which partitions the first pump chamber 21 and the second pump chamber 22 therein, a cleaning impeller 27 installed rotatably in the first pump chamber 21, and It has the impeller 30 for drainage provided in the 2 pump chambers 22 so that rotation was possible, and the pump motor 24 for driving the washing impeller 27 and the drain impeller 30.

On the other hand, at the bottom of the washing chamber 13, a collecting part 25 for collecting water in the washing chamber 13 is formed. The water collecting section 25 communicates with the first pump chamber 21 via the connecting pipe 26. At the time of washing and rinsing, the pump motor 24 is driven to rotate in a predetermined direction, and the water collected in the water collecting part 25 is transferred to the arm 16 by rotating the cleaning impeller 27 installed in the first pump chamber 21. Is sent.

Water sent to the arm 16 is ejected from the nozzles 41 to 47 formed on the upper surface of the arm 16 and is flushed to the tableware 14 accommodated in the dish basket 15. In addition, by the reaction force of the water fountain at this time, the arm 16 is rotated in one direction (the arrow A direction in FIG. 2), and the water fountain is evenly sprayed on the tableware 14 in the dish basket 15. As shown in FIG. As a result, the contaminants attached to the tableware 14 are removed and the tableware 14 is washed.

In addition, the water collecting part 25 is also connected to the second pump chamber 22 via the connecting pipe 29. When the washing or rinsing is completed, the motor 24 is driven to rotate in the opposite direction to the predetermined direction, and the water impeller 30 installed in the second pump chamber 22 is rotated so that the water collected in the water collecting part 25 is drained. It is discharged out of the washer through 31. In addition, residual debris removed from the tableware 14 is captured by the filter 28 provided on the upper part of the collecting part 25 when the water in the washing chamber 13 is collected in the collecting part 25.

This dish washer has a function of drying the dishes 14, and a blowing fan 32 for feeding air into the cleaning chamber 13 is provided at the rear portion of the housing 11. The blower fan 32 is driven and the air sucked in from the air intake port 33 formed on the rear surface of the housing 11 is fed into the cleaning chamber 13 from the air vent 34 formed on the rear surface of the cleaning chamber 13. The air supplied is heated by the heater 17 to become warm air to dry the dishes 14.

2 is a plan view when the inside of the cleaning chamber 13 is viewed from above. 3 is a cross-sectional view when the arm 16 is cut at the cutting line III-III shown in FIG.

The arm 16 will be described in detail below.

1 and 2, the arm 16 is an elongate member extending in the horizontal direction, and in the longitudinal direction of the arm therein, for example, by an upper member 35 and a lower member 36 made of resin. An extended runway 38 is formed. Moreover, the arm 16 is rotatably supported by the cylindrical water supply shaft 37 provided in the substantially center of the bottom part of the washing | cleaning chamber 13 in the substantially center of the longitudinal direction. The water supply shaft 37 is connected to the discharge port of the first pump chamber 21, and the water discharged from the first pump chamber 21 is introduced into the flow channel 38 through the water supply shaft 37.

On the upper surface of the arm 16, a plurality of nozzles 41 to 47 are arranged in order from one end of the arm 16 (seven in this embodiment). Water flowing into the flow channel 38 in the arm 16 is ejected from these nozzles 41 to 47.

The water fountains ejected from the nozzles 41 to 47 will be described in detail.

In the nozzle 41, a direct flow of water (water flow straight out without being unfolded) with a small diameter of the jetted water is generated toward the vertically upward direction. The nozzles 43 and 46 generate a shower fountain which is fan-shaped toward the top. In the nozzle 44, a direct flow of water having a diameter larger than that of the water in the nozzle 41 is injected upward.

In addition, in the nozzle 47, direct water flow is generated toward the inclined upper direction and in the direction crossing the longitudinal direction of the arm 16. By the reaction force of the water flow injected from this nozzle 47, the arm 16 is rotated in one direction A (refer FIG. 2) about the water supply shaft 37. As shown in FIG. That is, the nozzle 47 is provided with the washing | cleaning function of the tableware 14 (refer FIG. 1), and the function which propels and rotates the arm 16 together. Therefore, it is not necessary to separately provide a propulsion nozzle for rotating the arm 16.

One of the features of this embodiment is the shape of the nozzles 42 and 45. The nozzles 42 and 45 are comprised similarly, The structure is demonstrated below using the nozzle 42 as an example.

Referring to Fig. 3, the nozzle 42 is formed with two injection holes 48, 49 that are long in the longitudinal direction of the arm 16. These two injection holes 48, 49 are arranged side by side parallel to each other. These two injection ports 48 and 49 allow the nozzle 42 to generate a shower-shaped water fountain in two different directions intersecting the longitudinal direction of the arm 16. Specifically, one jet port 48 (corresponding to the first jet port of the present invention) generates a shower fountain (shown by a black arrow) vertically upward, and the other jet port 49 (the first invention of the present invention). At the two injection ports, a shower fountain (shown by a white arrow in the middle) is generated toward the inclined upper direction in the opposite direction to the rotation direction A of the arm 16. Therefore, the arm 16 is also propelled in the direction of the arrow A by the reaction force of the fountain at this injection port 49.

In addition, since the fountains ejected from the injection ports 48 and 49 are ejected in directions away from each other, the fountains do not interfere with each other and weaken the force or momentum from each other. Therefore, the tableware 14 can be washed well by the water sprayed from the injection holes 48 and 49.

Referring again to Figs. 1 and 2, in this embodiment, nozzles of the same shape are not arranged in each of one and the other of the arm 16 with respect to the rotation center 37 of the arm 16. In other words, the shapes of the nozzles 41 to 44 are different from each other, and the shapes of the nozzles 45 to 47 are also different from each other so that various kinds of fountains are injected. This is because the tableware 14 as the object to be cleaned has various shapes such as a plate and a mug 14a, and the cleaning power is secured, and a fountain suitable for each shape exists.

For example, the shower fountain flowed from the nozzles 43 and 46 is suitable for washing flat and rounded dishes 14, such as large plates, because the sprayed water is widely spread. In addition, the fountain flow in two directions blown out from the nozzles 42 and 45 is suitable for washing the bowl-shaped tableware 14 such as the mug 14a as described in detail later. Therefore, in this embodiment, the nozzles 41 and 44 and the dish basket 15 are positioned so that the dish accommodated in the dish basket 15 is located above the rotation trajectory of the nozzles 43 and 46 when the arm 16 is rotated. The positional relationship of the dishes inside is set. Moreover, the positional relationship of the nozzles 42 and 45 and the mug 14a is set so that the mug 14a accommodated in the dish basket 15 may be located on the rotation trace of the nozzles 42 and 45 (refer FIG. 4). . That is, the dishes 14 in the dish basket 15 placed in each of the nozzles 41 to 47 and the cleaning chamber 13 are arranged so that the most suitable fountain is flushed to the dishes 14 according to the shape of the dishes 14. It is. Thereby, all the tableware 14 is wash | cleaned cleanly.

Moreover, in this embodiment, each nozzle 41-47 is arrange | positioned so that the distance from the rotation center of the arm 16 may differ, and the circle of the rotational trace which each nozzle 41-47 draws will not become the same circle. Do not. Therefore, the water flow from the arm 16 is evenly blown out to the tableware 14 accommodated in the dish basket 15, so that washing stains do not occur on the tableware 14.

However, the plurality of nozzles 41 to 47 do not necessarily have to be arranged so that the distances from the rotational center of the arm 16 are all different, and if the washing water is flushed to the tableware 14 without stain, the arm 16 The nozzles may be provided at positions apart from each other at the same distance from each other in the opposite direction from the rotation center of the rotation. At this time, the shape of the nozzles provided at the same distance from each other may be different, and the cleaning power may be increased by causing different kinds of fountains to be blown out on the same tableware 14.

4 and 5 are diagrams for explaining the functions of the nozzles 42 and 45. In particular, FIG. 4 is a diagram illustrating the inside of the cleaning chamber 13 as viewed from above the dish basket 15, and illustrates the positional relationship between the rotational trajectories of the nozzles 42 and 45 and the dishware 14 placed on the dish basket 15. FIG. It is shown. 5 shows a state in which the fountain flows into the mug 14a. Hereinafter, the functions of the nozzles 42 and 45 will be described in detail.

The dishwasher according to this embodiment is a configuration in which the arm 16 is rotated in one direction A, not a configuration in which the arm 16 is inverted and rotated in both directions. Thereby, since a complicated mechanism for inverting the arm 16 is not necessary, the effect of reducing the cost of an apparatus can be obtained. However, as described in the related art, in the configuration in which the arm 16 is rotated in one direction, most of the jetted water from the nozzles 41 to 47 is blown out on one surface of the tableware 14, in particular, the mug 14a. There is a problem such that washing stain occurs in the bowl-shaped tableware 14 such as

Therefore, in the present dishwasher, as described above, the water jet 14a is sprayed in two directions between the fountains vertically upwards from the nozzles 42 and 45 and the fountains upwardly inclined to intersect the fountains. ) Can be cleaned without stains.

Specifically, the positional relationship between the mug 14a held in the dish basket 15 and the trajectory (shown by the dashed-dotted line) of the jet streams from the nozzles 42 and 45 is as shown in FIG. The mug 14a is located on the trajectory of the jet stream.

Referring to Fig. 5, when the nozzles 42 and 45 pass below the mug 14a, the water flow (indicated by the black arrow) sprayed vertically upward from the jetting port 48 is the outer surface of the mug 14a. Is blown out, and the outer surface of the mug 14a is washed. On the other hand, the water flow (in the middle of which is shown by the white arrow) sprayed upward from the injection port 49 is blown out to the inner surface of the mug 14a, and the inner surface of the mug 14a is washed. In this way, since both of the outer surface and the inner surface of the mug 14a are washed, no washing stain occurs.

In order to obtain the same effect as this, for example, a nozzle for generating a water fountain vertically upward at a position separated by the same distance from the rotational center of the arm 16 in the opposite direction to each other, and a nozzle for generating a water fountain upwardly inclined. May be considered. However, as the number of nozzles formed on the arm 16 increases, the gap between the adjacent nozzles becomes narrower. Thus, there is a possibility that the water flows from the adjacent nozzles interfere with each other to cancel the forces of the respective water flows, thereby degrading the cleaning power. Therefore, in the present embodiment, the fountains in two directions are generated from one nozzle, making them difficult to interfere with each other.

Although description of one Embodiment of this invention is as above, this invention is not limited to the above-mentioned embodiment, It is possible to make various changes in the range as described in a claim.

According to the invention of Claims 1 to 2, since water is spouted on both the outer surface and the inner surface of the bowl-like utensils such as a mug, both surfaces such as a mug can be washed even if the arm is rotated in only one direction. There is no washing stain. In addition, if the arm is rotated only in one direction, a complicated mechanism for inverting the arm becomes unnecessary, and the cost of the apparatus can be reduced.

Since the injection water jetted from the first injection port and the second injection port does not interfere with each other, high cleaning power can be secured without weakening the injection power to lower the cleaning power.

According to the invention as set forth in claim 3, for example, a fan-shaped fountain flows out along the longitudinal direction of the arm, respectively, in the first injection port and the second injection port. Therefore, it is possible to clean a wide range by the water injected from the first injection port and the second injection port. In addition, since the jetted water jetted from the first injection port and the second injection port is unlikely to interfere with each other, the injection power is weakened and the cleaning power is not lowered. Therefore, good washing power can be ensured.

According to invention of Claim 4, the nozzle of the same shape does not exist in each of one arm and the other with respect to the rotation center of an arm. Therefore, many kinds of fountains can be generated, so that all the dishes can be cleaned cleanly by setting the positional relationship between the dishes and the nozzles so that the fountains which can be washed well according to the shape of the dishes are flushed out.

Claims (4)

In the dishwasher which has a long arm rotatably installed in the washing | cleaning chamber, sprays water from the some nozzle arrange | positioned at the arm, and washes the dishes put in the washing chamber by the sprayed water, A predetermined nozzle among a plurality of nozzles is provided with a first injection hole and a second injection hole for injecting water in two different directions, and the water injected from the first injection hole is sprayed toward the vertically upward from the arm, and the second The water jetted from the injection port is sprayed in a cross direction with respect to the longitudinal direction of the arm toward the inclined upward direction. According to claim 1, wherein the water jetted from the first jet port is mainly sprayed to the outer surface of the bowl-shaped dishes placed in the cleaning chamber, the water sprayed from the second jet port is mainly directed to the bowl-shaped tableware Dishwasher characterized in that it is flushed to its inner surface. The dish washing machine according to claim 1, wherein the first injection hole and the second injection hole are long injection holes along the longitudinal direction of the arm, and are arranged in parallel with each other. In the dishwasher which has a long arm rotatably installed in the washing | cleaning chamber, sprays water from the some nozzle arrange | positioned at the arm, and washes the dishes put in the washing chamber by the sprayed water, And a nozzle disposed on the arm in each of the one and the other of the arm with respect to the rotational center of the arm.

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