JPH10127560A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher capable of evenly cleaning dishes even if the arm is constituted to rotate in one direction. SOLUTION: Nozzles 41-47 are mounted on the upper face of an arm 16 rotatably set in a cleaning room 13. Water supplied to the arm 16 is injected through the nozzles 41-47 and dishes set in the cleaning room are cleaned by the injected water. At that time, the arm 16 is rotated in the arrow mark A direction by the reaction force of the injected water flow and evenly blown at the dishes. Two jet ports 48 and 49 are formed on nozzles 42 and 45 so as to produce two directions fan shaped shower injecting flows. Water jet upward blown out in the perpendicular direction form one jet port 48 is blow at the outer surfaces of dishes set in a dish cage. Water jet upward blown out in an oblique direction from the other jet port 49 is blown at the inner surfaces of dishes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dishwasher for automatically washing and rinsing dishes.

[0002]

2. Description of the Related Art There has been known a dishwasher which draws up water stored in a bottom portion of a washing room, feeds the water to a nozzle, and jets water from the nozzle to wash dishes set in the washing room. I have. In such a dishwasher, there is a dishwasher in which a nozzle is arranged on a rotatable arm so that water is jetted while the arm is inverted (for example, see Japanese Patent Application Laid-Open No. Hei 2-305538). The arm is inverted so that the set dishes are washed evenly by the jet water from the nozzle.
That is, if the arm is rotated only in one direction, a large amount of water sprayed from the nozzle is sprayed on one surface of the tableware, resulting in uneven washing of the tableware.
Particularly, in bowl-shaped tableware such as a bowl, uneven washing often occurs.

[0003]

However, in the configuration of reversing the arm, a complicated mechanism for reversing the arm is required, and in some cases, the supply of the cleaning water is temporarily performed in order to reverse the arm. Since it is necessary to stop the cleaning, there is a problem that the cleaning time becomes long.

Accordingly, an object of the present invention is to solve the above-mentioned technical problems and to provide a dishwasher which can wash dishes evenly even when the arm is rotated in one direction. is there.

[0005]

According to a first aspect of the present invention, there is provided a dishwasher having a longitudinal arm rotatably disposed in a washing chamber, and a plurality of arms disposed on the arm. In a dishwasher that sprays water from nozzles and cleans dishes set in a cleaning chamber with the sprayed water, a predetermined nozzle among a plurality of nozzles has two different nozzles.
A first injection port and a second injection port for injecting water in a direction are formed.

According to a second aspect of the invention, the water injected from the first injection port is injected substantially vertically upward from the arm, and the water injected from the second injection port is directed obliquely upward. 2. The dishwasher according to claim 1, wherein the jet is sprayed in a direction crossing the longitudinal direction of the arm. According to the third aspect of the present invention, the water jetted from the first jet port is mainly sprayed on the outer surface of the bowl-shaped tableware set in the cleaning chamber, and is jetted from the second jet port. The dishwasher according to claim 1 or 2, wherein the water is mainly sprayed on the inner surface of the bowl-shaped tableware.

According to the first aspect of the present invention, the nozzle having the first injection port and the second injection port is different from the nozzle in which the second injection port is formed.
The jet water is jetted in the direction. Specifically, as described in claim 2, water is jetted substantially vertically upward from the first jet port, and obliquely upward from the second jet port and in the longitudinal direction of the arm. Is sprayed in the cross direction. More specifically, as described in claim 3, water injected from the first injection port is sprayed on an outer surface of a bowl or the like, and water injected from the second injection port is a bowl or the like. Sprayed on the inner surface of the

As described above, since water is sprayed on both the outer surface and the inner surface of the bowl and the like, both surfaces of the bowl and the like can be cleaned even if the arm rotates only in one direction. No unevenness in washing occurs. Also,
If the arm is configured to rotate only in one direction, a complicated mechanism for inverting the arm is not required, and the cost of the device can be reduced. In addition, there is no need to interrupt the supply of water to the nozzle when the arm is inverted, so that the time required for cleaning can be reduced.

According to a fourth aspect of the present invention, the first and second injection ports are injection ports that are long along the longitudinal direction of the arm. 2. The dishwasher according to 1. According to the configuration of the fourth aspect, for example, a fan-shaped fountain flow that spreads along the longitudinal direction of the arm is jetted from the first jet port and the second jet port. Therefore, a wide area can be washed with the water jetted from the first jet port and the second jet port. Further, the jet water jetted from the first jet port and the second jet port are less likely to interfere with each other, and the jetting power is not weakened with each other, so that the cleaning power is not reduced. Therefore, a good detergency can be secured.

According to a fifth aspect of the present invention, there is provided a cleaning chamber having a longitudinal arm rotatably disposed therein, wherein water is jetted from a plurality of nozzles disposed in the arm, and the jetted water is used to enter the cleaning chamber. A dishwasher for washing a set dish, wherein nozzles disposed on the arm are different in shape from each other on one side and the other side of the arm with respect to the rotation center of the arm.

According to the fifth aspect of the present invention, no nozzle having the same shape exists on one side and the other side of the arm with respect to the rotation center of the arm. Therefore, since many types of fountain flows can be generated, the positional relationship between the tableware and the nozzles should be set so that the fountain flows that can be washed well according to the shape of the tableware are sprayed on the tableware. By this, all the dishes can be cleaned cleanly.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described in detail with reference to the accompanying drawings. FIG. 1 is a right side sectional view showing an internal configuration of a dishwasher according to an embodiment of the present invention. The dishwasher includes a box-shaped housing 11 having an opening on a front surface, and a housing 11.
Openable door 12 that can close the front opening of the door
And a cleaning chamber 13 partitioned in a housing 11. A dish basket 15 for accommodating and holding tableware 14 as an article to be washed can be put in and out of the washing room 13 through a front opening of the housing 11. FIG. 1 shows a bowl 14 a as the tableware 14. An arm 16 that sprays water onto the tableware 14 in the tableware basket 15 is disposed below the tableware basket 15 and substantially at the center of the bottom of the washing chamber 13. Further, a heater 17 (see FIG. 2) is provided at the bottom of the 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 water sent from the unshown water supply or the like through the water supply pipe 19 is supplied into the cleaning chamber 13 through the water supply port 19. The water supplied into the cleaning chamber 13 is stored at the bottom of the cleaning chamber 13 and is heated by the heater 17 to become hot water. A water supply valve 20 for controlling the supply of water to the cleaning chamber 13 is provided in the middle of the water supply pipe 19. Water supply valve 2
As 0, for example, an electromagnetic valve is used.

Below the cleaning chamber 13, a pump device 23 is provided. The pump device 23 includes the first pump chamber 21
And housing 2 that partitions second pump chamber 22 inside
3a, a cleaning impeller 27 rotatably provided in the first pump chamber 21, a drain impeller 30 rotatably provided in the second pump chamber 22, and a cleaning impeller 27.
And a pump motor 24 for driving the drain impeller 30.

On the other hand, the bottom of the cleaning chamber 13 is
A water collecting portion 25 for collecting water in the inside is formed. The water collecting section 25 is connected to the first pump chamber 21 via a connection pipe 26. At the time of washing and rinsing, the pump motor 24 is driven to rotate in a predetermined direction, and the washing impeller 27 provided in the first pump chamber 21 is rotated. Sent to

The water sent to the arm 16 is blown out from nozzles 41 to 47 formed on the upper surface of the arm 16 and sprayed on the tableware 14 stored in the tableware basket 15. Further, the arm 16 is rotated in one direction (the direction of arrow A in FIG. 2) by the reaction force of the fountain flow at this time, and the fountain flow is evenly blown to the tableware 14 in the tableware basket 15.
Thus, the dirt attached to the tableware 14 is removed, and the tableware 14 is washed.

The water collecting section 25 is also connected to the second pump chamber 22 via a connecting pipe 29. When the washing or rinsing is completed, the motor 24 is driven to rotate in a direction opposite to the predetermined direction, and the drainage impeller 30 provided in the second pump chamber 22 is rotated, so that the water is collected in the water collecting section 25. The drained water is discharged outside the machine through a drain pipe 31.
In addition, the garbage and the like dropped from the tableware 14 are washed in the washing room 13.
When the water in the water collecting part 25 is collected, the water is captured by a filter 28 provided on the upper part of the water collecting part 25.

The dishwasher has a function of drying the dishes 14, and is provided with a blower fan 32 for blowing air into the washing chamber 13 at the rear of the housing 11. The blower fan 32 is driven to drive the housing 11
The air sucked from the suction port 33 formed on the rear surface of the cleaning chamber 13 is sent into the cleaning chamber 13 from the ventilation port 34 formed on the rear surface of the cleaning chamber 13. The sent air is heated by the heater 17 to become hot air, and the tableware 14 is dried.

FIG. 2 is a plan view when the inside of the cleaning chamber 13 is viewed from above. FIG. 3 shows the arm 16 as shown in FIG.
FIG. 3 is a cross-sectional view taken along a cutting line III-III shown in FIG.
Hereinafter, the arm 16 will be described in detail. Referring to FIGS. 1 and 2, arm 16 is an elongated member that extends in the horizontal direction, and includes therein an upper member 35 and a lower member 36 made of, for example, resin.
A water passage 38 extending in the longitudinal direction of the arm is formed. The arm 16 is rotatably supported at substantially the center in the longitudinal direction by a cylindrical water supply shaft 37 provided substantially at the bottom of the cleaning chamber 13. The water supply shaft 37 is connected to a discharge port of the first pump chamber 21, and water sent from the first pump chamber 21 is introduced into the flowing water passage 38 through the water supply shaft 37.

On the upper surface of the arm 16, a plurality (seven in this embodiment) of nozzles 41 to 47 are arranged in order from one end of the arm 16. The water flowing into the flowing water channel 38 in the arm 16 is jetted from these nozzles 41 to 47. The fountain flow spouted from each of the nozzles 41 to 47 will be specifically described. From the nozzle 41, a direct jet flow having a small jet water diameter is generated almost vertically upward. Also, a shower fountain flow that fan-wise spreads upward from the nozzles 43 and 46. Further, the nozzle 44
From above, a direct fountain flow having a larger diameter than the fountain flow from the nozzle 41 is jetted upward.

Furthermore, a direct fountain flow is generated from the nozzle 47 obliquely upward and in a direction crossing the longitudinal direction of the arm 16. The arm 16 is rotated in one direction A (see FIG. 2) about the water supply shaft 37 by the reaction force of the water flow injected from the nozzle 47. That is, the nozzle 47 has a cleaning function of the tableware 14 (see FIG. 1) and the arm 16.
It also has a function to rotate the propulsion. Therefore, there is no need to separately provide a propulsion nozzle for rotating the arm 16.

One of the features of this embodiment is that the nozzle 42
And 45. Nozzles 42 and 45 are similarly configured, and in the following, taking nozzle 42 as an example,
The configuration will be described. Referring to FIG.
2 includes two injection ports 48 long in the longitudinal direction of the arm 16.
And 49 are formed, and the nozzle 42 generates fan-shaped shower fountain flows in two different directions intersecting with the longitudinal direction of the arm 16. In particular,
A vertically upward shower fountain flow (indicated by a black arrow) is generated from one injection port 48, and from the other injection port 49,
Upward in a direction opposite to the rotation direction A of the arm 16,
A shower fountain flow (indicated by a white arrow) is generated. Therefore, the arm 16 is also propelled in the direction of arrow A by the reaction force of the fountain flow from the injection port 49.

The fountain flows ejected from the jets 48 and 49 are jetted away from the jets 48 and 49, so that the jets do not interfere with each other and weaken the momentum. Therefore, the tableware 14 can be favorably washed with the water injected from the injection ports 48 and 49. Referring again to FIGS. 1 and 2, in this embodiment, nozzles having the same shape are not disposed on one side and the other side of the arm 16 with respect to the rotation center 37 of the arm 16. That is, the nozzles 41 to 44 have different shapes, and the nozzles 45 to 47 also have different shapes, so that various types of fountain flows are jetted. This is because the tableware 14 as the object to be washed has various shapes such as a dish and a bowl 14a, and a fountain flow suitable for each shape exists in order to secure the washing power.

For example, the shower fountain jets jetted from the nozzles 43 and 46 are suitable for washing flat dishes 14 such as large dishes because the jet water spreads over a wide range. Further, the fountain flows in two directions blown out from the nozzles 42 and 45, as described later in detail,
It is suitable for cleaning bowl-shaped tableware 14 such as a bowl 14a.
Therefore, in this embodiment, the nozzles 41 and 44 and the inside of 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 with the plate is set. Also, on the rotation locus of the nozzles 42 and 45,
The positional relationship between the nozzles 42 and 45 and the bowl 14a is set such that the bowl 14a accommodated in the tableware basket 15 is positioned (see FIG. 4). That is, each nozzle 41
47 and the tableware 14 in the tableware basket 15 set in the washing room 13 are arranged such that a fountain flow most suitable for the shape of the tableware 14 is sprayed on the tableware 14. As a result, all the dishes 14 are cleanly cleaned.

In this embodiment, each of the nozzles 41 to 41
47 are arranged so that the distances from the rotation center of the arm 16 are all different, and the circles of the rotation trajectories drawn by the nozzles 41 to 47 do not become the same circle. Therefore, the fountain flow from the arm 16 is applied to the tableware 14 stored in the tableware basket 15.
It is sprayed evenly and does not cause uneven washing of the tableware 14.

However, the plurality of nozzles 41 to 47 do not necessarily need to be arranged so that the distances from the rotation center of the arm 16 are all different, and the washing water is evenly blown onto the tableware 14. Then, arm 16
At the same distance away from the center of rotation
Each may be provided with a nozzle. At this time, the nozzles provided at the same distance from each other may have different shapes, and different types of fountain flows may be sprayed on the same tableware 14 to increase the cleaning power.

FIGS. 4 and 5 show nozzles 42 and 45, respectively.
FIG. 3 is a diagram for explaining the function of FIG. In particular, FIG. 4 is an illustrative view of the inside of the washing room 13 as viewed from above the tableware basket 15, and shows a positional relationship between the rotation trajectories of the nozzles 42 and 45 and the tableware 14 set in the tableware basket 15. FIG.
Shows a state in which the fountain flow is sprayed on the teacup 14a. Hereinafter, the functions of the nozzles 42 and 45 will be described in detail.

The dishwasher according to this embodiment has a structure in which the arm 16 is rotated in one direction A, not a structure in which the arm 16 is turned over and turned in both directions. As a result, there is an effect that a complicated mechanism for inverting the arm 16 is not required and the cost of the device can be reduced. However, as described in the section of the prior art, in the configuration in which the arm 16 is rotated in one direction, a large amount of water sprayed from the nozzles 41 to 47 is sprayed on one surface of the tableware 14, and particularly, a bowl such as a tea bowl 14a. There is a problem that the dish-like table 14 has uneven washing.

Therefore, in the dishwasher, as described above, the nozzles 42 and 45 inject a fountain flow in two directions: a vertically upward fountain flow and an obliquely upward fountain flow intersecting the fountain flow. Thereby, the bowl 14a can be washed evenly. Specifically, the positional relationship between the bowl 14a held in the tableware basket 15 and the trajectory (shown by a two-dot chain line) of the jet water flow from the nozzles 42 and 45 is as shown in FIG. The bowl 14a is located on the trajectory of the water flow.

Referring to FIG. 5, when the nozzles 42 and 45 pass below the bowl 14a, a water flow (indicated by a black arrow) which is jetted vertically upward from the injection port 48 flows out of the bowl 14a. The outer surface of the bowl 14a is washed by being sprayed on the surface. On the other hand, a water stream (indicated by a white arrow) jetted obliquely upward from the jet port 49 is sprayed on the inner surface of the bowl 14a, and the inner surface of the bowl 14a is washed. As described above, since both the outer surface and the inner surface of the bowl 14a are washed, unevenness in washing does not occur.

To obtain the same effect, for example, a nozzle generating a vertically upward fountain flow at a position away from the center of rotation of the arm 16 by the same distance in the opposite direction, and a fountain flow obliquely upward It is conceivable to form a nozzle that generates the following. However, when the number of nozzles formed on the arm 16 increases, the interval between adjacent nozzles becomes narrower, so that fountain flows from adjacent nozzles interfere with each other,
There is a possibility that the momentums of the fountain flows cancel each other, and the cleaning power is reduced. Therefore, in this embodiment, by generating a fountain flow in two directions from one nozzle, the fountain flows are less likely to interfere with each other.

Although the description of one embodiment of the present invention is as described above, the present invention is not limited to the above-described embodiment, and various modifications may be made within the scope described in the claims. Is possible.

[0033]

According to the first to third aspects of the present invention, since water is sprayed on both the outer surface and the inner surface of a bowl or the like, even if the arm rotates only in one direction. , Can wash both surfaces such as bowls,
No unevenness in washing occurs. Further, if the arm is configured to be rotated only in one direction, a complicated mechanism for inverting the arm is not required, and the cost of the device can be reduced.

Further, since the jet water jetted from the first jet port and the second jet port do not interfere with each other, the jetting force is not weakened by each other, so that the jetting power is not reduced, and high jetting power is secured. it can. According to the fourth aspect of the present invention, a fan-shaped fountain flow, for example, fan-shaped, which spreads along the longitudinal direction of the arm, is jetted from the first jet port and the second jet port. Therefore, a wide area can be washed with the water jetted from the first jet port and the second jet port. Further, the jet water jetted from the first jet port and the second jet port are less likely to interfere with each other, and the jetting power is not weakened with each other, so that the cleaning power is not reduced. Therefore, a good detergency can be secured.

According to the fifth aspect of the present invention, no nozzle having the same shape exists on one side and the other side of the arm with respect to the rotation center of the arm. Therefore, since many types of fountain flows can be generated, the positional relationship between the tableware and the nozzles should be set so that the fountain flows that can be washed well according to the shape of the tableware are sprayed on the tableware. By this, all the dishes can be cleaned cleanly.

[Brief description of the drawings]

FIG. 1 is a right side sectional view showing an internal configuration of a dishwasher according to an embodiment of the present invention.

FIG. 2 is a plan view of a washing room provided in the dishwasher as viewed from above.

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

FIG. 4 is an illustrative view of the washing chamber as viewed from above a tableware basket, showing a positional relationship between a rotation locus of a nozzle for jetting water in two directions and tableware.

FIG. 5 is an illustrative view showing a state in which a fountain flow is sprayed on a teacup in order to explain a function of a nozzle which injects water in two directions.

[Explanation of symbols]

 13 Washing Room 14 Tableware 14a Teacup 16 Arm 37 Water Supply Shaft 41-47 Nozzle 48,49 Injection Port

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kenji Yamane 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Tomohiko Matsuno 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Kenichi Jinda 2-5-5 Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] 1. A washing machine comprising a longitudinal arm rotatably disposed in a washing chamber, wherein water is jetted from a plurality of nozzles arranged in the arm, and the jet water is used to wash dishes set in the washing chamber. In a dishwasher, a first nozzle and a second nozzle for injecting water in two different directions are formed in predetermined nozzles of the plurality of nozzles. 2. The water jetted from the first jet port is jetted substantially vertically upward from the arm, and the water jetted from the second jet port is directed obliquely upward in the longitudinal direction of the arm. The dishwasher according to claim 1, wherein the dishwasher is sprayed in a crossing direction. 3. The water jetted from the first jet port is sprayed mainly on the outer surface of a bowl-shaped tableware set in the washing chamber, and the water jetted from the second jet port is The dishwasher according to claim 1 or 2, wherein the bowl-shaped dish is mainly sprayed on an inner surface thereof. 4. The dishwasher according to claim 1, wherein the first and second injection ports are long injection ports along a longitudinal direction of the arm. 5. A washing machine having a longitudinal arm rotatably disposed in a washing chamber, wherein water is jetted from a plurality of nozzles arranged on the arm, and the jet water is used to wash dishes set in the washing chamber. A nozzle according to claim 1, wherein the nozzles disposed on the arm have different shapes on one side and the other side of the arm with respect to the center of rotation of the arm.