JP3841089B2 - Dishwasher - Google Patents

Description

  The present invention relates to an injection system that injects cleaning water suitable for performing high pressure and wide range injection with a small amount of water in a dishwasher for cleaning dishes.

  FIG. 8 shows a top view of the washing water jetting means in the conventional dishwasher. In recent years, dishwashers have become mainstream with a reduced depth and a smaller installation area so that they can be installed in a small kitchen. When the dishwasher is viewed from the top as shown in FIG. In many cases, the shape is rectangular, and in order to spray the washing water onto the tableware as evenly as possible, the one having two rotary washing nozzles 4 at the bottom of the tableware washing machine as shown in FIG. The rotary cleaning nozzle 4 is provided with a plurality of jets for jetting cleaning water, and the central portion of the rotary cleaning nozzle is rotatably attached, and rotates while jetting the cleaning water pumped from the pump. It is configured as follows.

  However, in order to inject the cleaning water from the rotary cleaning nozzle 4 to the dishes stored in the tableware storage as evenly as possible, even if a plurality of rotary nozzles are provided, the rotary cleaning nozzle is provided. Increasing the number of spray ports or increasing the opening area of the spray ports in order to spray the wash water from each spray port at a wide angle increases the amount of cleaning water sprayed from the spray ports. If the amount of spray increases, the amount of washing water stored in the dishwasher does not increase when washing dishes, causing the problem of biting air when pumping washing water from the pump. In order to avoid this, it is necessary to store a large amount of washing water, and there has been a problem that a large amount of water is required when washing is performed with a dishwasher.

  In other words, in order to minimize the amount of washing water used when washing dishes in a conventional dishwasher, the jet from the nozzle of the dishwasher is jetted substantially upward without increasing the number of jets. Thus, the injection port is often configured, and the injection trajectory of the cleaning water from the injection port arranged at the outermost part of the rotary cleaning nozzle is in the range shown by the oblique lines in FIG. As can be seen from FIG. 8, in the rotary cleaning nozzle having the jet nozzle having such a configuration, the cleaning water is difficult to reach near the middle of the two cleaning nozzles and the end of the tableware storage. There is a high possibility that the dishes arranged in such a position cannot be washed.

In order to eliminate the range that cannot be cleaned without increasing the amount of cleaning water, it is effective to widen the cleaning range by changing the injection direction of the cleaning water. For example, in order to spray a wide range from the injection port, cleaning is performed inside the injection port. Some have water turbines that rotate by water. (For example, see Patent Documents 1 and 2.)
In such a case, there is a problem that continuous swirl injection cannot be obtained when dirt or the like adheres to and adheres to the rotating shaft of the water turbine, or solid matter such as dirt is caught in the casing of the water turbine and the water turbine. There is a problem that the washing water collides with the casing of the water turbine and jets it at a wide angle, and when it collides with the casing, the jetting power of the water is lost and the jetting power to the dishes drops. There is.

JP 04-49937 (page 2-3, FIG. 1) Japanese Patent Laid-Open No. 2001-299665 (page 3-6, FIG. 4)

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to perform a wide range of washing water injection while maintaining a high injection pressure even with a low amount of water by rotating the injection direction of the washing water. In addition, the swirling of the cleaning water is realized without stopping due to adhesion of dirt.

In order to achieve the above object, according to the invention described in claim 1, dishwashing provided with washing water jetting means arranged to jet washing water to the dishes stored in the tableware storage for storing tableware In the machine, the washing water jetting means is provided in the tableware storage so as to be rotatable through a vertical rotating shaft , and is extended from the rotating shaft to both sides, and the upper member and the lower member. inside the water channel is formed by a member, further a rotary washing nozzle in which a plurality of injection ports are provided on the upper surface of the upper member, there is one of disposed on a top surface of the rotary washing nozzle said injection port Te to inject cleaning water supplied from the water passage to the tableware, the injection unit injecting direction is fixed, a one of the ejection port provided on an upper surface of the rotary washing nozzle And provided at a different position from the injection unit, While turning the injecting direction of the cleaning water supplied from the Kidori waterways, and a vortex injector for injecting wash water to the dishes, eddy flow ejection portion upward from the upper surface of the rotary washing nozzle A vortex jet formed at a protruding position, and a sphere formed at a position protruding upward from the upper surface of the rotary cleaning nozzle and provided in the lower portion around the vortex jet inside the vortex jet section A swirl chamber, at least one sphere member capable of swirling in the sphere swirl chamber, and a lower swirl chamber provided in the water passage space at a lower portion of the sphere swirl chamber and communicating with the sphere swirl chamber, lower swirl chamber, together are configured in the through the water passage by the swirling chamber ribs formed on the annular projection shape that extends integrally toward the lower member from the upper member of the rotary washing nozzle, said swirling chamber ribs The rotating wash Configured to be separated from the space of the water passage by wash water from the gap between the lower member of the nozzle is configured to prevent the inflow, while the plan view of the one side surface of the swirling chamber ribs the wash water inlet formed by causing the opening to break off, the washing water flowing from the cleaning water introduction port, that along the inner surface of the annular swirl chamber ribs, swirling flow in the lower swirl chamber is The swirl flow is configured so as to be generated , and the swirl flow is configured to be supplied into the swirl chamber in which the spherical member provided above is stored .

According to the second aspect of the present invention, the swirl jet unit and the jet unit are provided side by side on an upper surface region on one side of the rotary shaft of the rotary cleaning nozzle , and the jet unit is more than the swirl jet unit. It is provided at an upstream position on the rotating shaft side, and the vortex jet portion is provided at a downstream position farthest from the rotating shaft .

According to a third aspect of the present invention, the rotary shaft of the rotary cleaning nozzle is positioned at the center of the rotary cleaning nozzle, and the injection unit is positioned on the opposite side of the vortex injection unit across the rotary shaft. In addition, a pair is provided in the vicinity of the rotation trajectory of the eddy current injection unit and at a position sandwiching the rotation trajectory of the vortex injection unit.
According to a fourth aspect of the present invention, the vortex jetting unit further includes a columnar sphere rotation support member for supporting the rotation of the sphere member, the center of the sphere swirl chamber and the center of the vortex flow outlet. The spherical rotation support member is provided with a position, and the area of the upper end portion is smaller than the area of the vortex jet.
According to the fifth aspect of the present invention, the guide rib for guiding the cleaning water to the cleaning water inlet is formed in the water passage of the rotary cleaning nozzle.
According to the invention of claim 6, the rotation of the guide rib so as to extend from the lower member of the rotary cleaning nozzle toward the upper member of the rotary cleaning nozzle on the rotary shaft side of the swirl chamber rib. It is formed integrally with the lower member of the cleaning nozzle, and a labyrinth structure is formed by the swirl chamber rib and the guide rib.

  According to the present invention, the injection direction of the cleaning water that is injected from the cleaning water injection port is changed every moment without expanding the width of the cleaning water injection to a wide angle and always injecting to a wide angle. While maintaining the injection force, it is possible to achieve injection over a wide range without increasing the amount of cleaning water injected, that is, the amount of cleaning water. Further, since the spherical member is used for turning, the spherical member and the turning chamber in which the sphere turns are configured to be in contact with each other, so that foreign matter such as dirt is hardly generated. Even if it occurs, the foreign matter is easily discharged by the swirling flow in the swirl chamber, so that a wide range of washing water injection with a high water pressure is maintained and the swirling of the washing water is stopped due to contamination. There is an effect that can be realized.

  Embodiments of a dishwasher according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an internal structure diagram of a dishwasher as an example of an embodiment of the present invention. 1 is a tableware storage for storing tableware. The tableware storage 1 is provided with a hot water heater 2 for heating washing water stored in the tableware storage 1 and a tableware basket 3 for storing tableware. The rotary cleaning nozzle 4 and the fixed cleaning nozzle 5 are provided as cleaning water spraying means for spraying cleaning water onto the tableware stored in the table. And the pump 6 provided with the function which pumps wash water in the lower part of the tableware storage 1, injects wash water from the rotary washing nozzle 4 and the fixed washing nozzle 5, and the function which discharges washing water to the outside of a dishwasher. An electromagnetic valve 7 for supplying cleaning water into the tableware storage 1, a water level detection means 8 for detecting the level of the cleaning water in the tableware storage 1, and a blower fan 10 for sending air into the tableware storage 1, A warm air heater 11 that warms the wind sent by the blower fan 10 is provided, and an exhaust port 13 that discharges the wind sent by the blower fan 10 to the outside of the dishwasher is provided on the front surface of the dishwasher. A control device 12 is provided inside the dishwasher, and an operation panel 9 is provided on the front surface of the dishwasher for selecting a washing course.

  FIG. 2 is a top view of an example of the rotary cleaning nozzle of the present invention, and FIG. 3 is a sectional view of the rotary cleaning nozzle. As shown in FIG. 2, the rotary cleaning nozzle 4 of the present embodiment has an opening 20 a, 20 b, 20 c, substantially upward, in order to inject cleaning water toward the tableware or the like arranged in the tableware storage. One of the jet nozzles 20a provided with five jet nozzles 20d and 20e and disposed outside the rotary cleaning nozzle 20a has a rotating sphere inside thereof, and a vortex that jets cleaning water spirally from the jet nozzle It is an injection port. As shown in FIG. 3, the rotary cleaning nozzle 4 is formed by vibrating and welding two members, an upper nozzle member 21 and a lower nozzle member 22, and a water passage is formed therein, and the central nozzle 23 is closed to rotate. It is arranged at the bottom of the tableware storage 1 as possible. From the four cleaning water injection ports 20b, 20c, 20d, and 20e, the cleaning water jets the cleaning water substantially upward in the direction corresponding to the shape of the opening of the cleaning port.

FIG. 4 shows a detailed cross-sectional view of the vortex jet portion provided corresponding to the vortex jet 20a described above. The nozzle upper member 21 is provided with a vortex jet 20a for jetting cleaning water, and a swirl chamber rib 25 provided in the nozzle upper member 21 and a swirl provided in the nozzle lower member 22 are provided below the vortex jet 20a. A swirl chamber 27 formed by a gap with the chamber projection 26 is formed. The swirl chamber rib 25 is formed as a concentric circle with the center of the injection port as shown by oblique lines in the top perspective view of FIG. 2, and a part of the swirl chamber rib 25 is used to guide the cleaning water pumped from the pump to the swirl chamber. In other words, there is provided a portion having no water, that is, a cleaning water inlet 28. In addition, the nozzle lower member 22 is provided with a guide rib 29 for surely guiding the cleaning water to the cleaning water introduction port 28, and introduces the cleaning water into the swirl chamber 27 only from the cleaning water introduction port 28. The structure is such that a reliable swirl flow is generated inside the swirl chamber 27. The guide rib 29 forms a labyrinth structure together with the swirl chamber rib 25 to prevent inflow of cleaning water from the gap between the swirl chamber rib 25 and the nozzle lower member 22 and generate a reliable swirl flow inside the swirl. It is also for making. The swirl flow generated in the swirl chamber rotates a sphere member 32 arranged in a sphere member swirl chamber 31 formed by the sphere rotation center support member 30 and the wall surface of the nozzle upper member 21 in the upper portion of the swirl chamber. Washing water is jetted from the vortex jet 20a.

  Next, the state of the washing water jet from the vortex jet section having the above-described configuration will be described. FIG. 5 is a diagram schematically showing the form of washing water injection when the spherical member 32 is not provided. The washing water that has flowed in from the swirl chamber 27 flows toward the vortex flow jet port 20a, but the swirl chamber 27 and the spherical member swirl chamber 31 are formed symmetrically with respect to the center of the vortex flow jet port 20a. The spraying direction of the cleaning water sprayed when the cleaning water uniformly flows from the periphery is sprayed in a substantially vertical or dispersed manner. Next, the cross-sectional view of the vortex jetting section shown in FIG. 6 is a diagram schematically showing the flow of jet water when the spherical member 32 is stopped at a location. As shown in the figure, the cleaning water flowing in from the swirl chamber 27 flows into the vortex jet port 20a through the spherical member swirl chamber 31 as in the case where there is no spherical member 32. The spherical member 32 blocks the inflow of the washing water into the vortex jet port 20a, and the washing water jet as shown by the arrow in FIG. That is, the sphere member 32 is swirled inside the sphere swirl chamber 31 by the cleaning water given the swirl force in the swirl chamber 27, so that the jet water from the vortex jet port 20 a is in a direction corresponding to the position of the sphere member 32. In this case, the spherical water member 32 is rotated sufficiently faster than the rotational speed of the rotary cleaning nozzle 4 to change the injection direction from the vortex flow injection port 20a every moment to inject the water as shown in FIG. As shown in FIG. 7, it is possible to inject over a wide range. In addition, in order to realize a wide range of injection by changing the direction in which the washing water is sprayed in this way, the wide area of washing with a small amount of water compared to the case where the area of the injection port is widened and the wide range of injection is always performed. Water injection is possible. Further, when the cleaning water is jetted, since the cleaning water is always swirling in the spherical swirl chamber 31, dirt does not easily adhere to the spherical member 32 or the spherical swirl chamber 31, and even if it adheres, the spherical member 32 Since the inside of the spherical swirl chamber 31 is configured by point contact, swirling water can be jetted without stopping swirling of the washing water.

  Moreover, in the above embodiment, one injection port located outside the rotary cleaning nozzle 4 having a plurality of injection ports is an eddy current injection unit capable of a wide range of injection, and between the rotary nozzles or at the end of the tableware storage The example of reducing the blind spot of the section has been explained, but by providing a plurality of vortex jet sections, the configuration that eliminates the blind spot between the spray ports further reduces the amount of washing water and improves the dish washing performance It is also possible to make it.

  In addition, the embodiment in the case where the swirl jet part is provided in the rotary cleaning nozzle 4 has been described so far. However, in the case where the dish storage basket is provided in two stages as shown in FIG. There is also a dishwasher provided with a jet nozzle, that is, a fixed nozzle 5, which is nozzle-fixed toward an upper basket in a dishwasher that performs washing on arranged dishes. In the dishwasher having such a configuration, by providing the eddy current jetting part to the fixed nozzle 5, not only can the washing water be jetted into the tableware in the upper stage of the tableware basket by a small number of nozzles, but also the swirl jet is not performed. In the case of a fixed nozzle with a normal injection port, the cleaning water is sprayed intermittently when seen locally, but the soil is difficult to remove such as rice grains. There is also an effect that it becomes easy to drop.

It is a block diagram which shows the dishwasher of this invention. It is a top view which shows the rotary washing nozzle of this invention. It is sectional drawing which shows the rotary washing nozzle of this invention. It is sectional drawing which shows the turning injection nozzle of this invention. It is an injection schematic diagram which shows injection when there is no spherical member for reference. It is an injection schematic diagram which shows injection at the time of providing the spherical member of this invention. It is an upper surface schematic diagram which shows the washing water injection range from the turning injection port of this invention. It is an upper surface schematic diagram which shows the washing water injection range from the conventional injection port.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tableware storage 2 ... Warm water heater 3 ... Tableware basket 4 ... Rotary washing nozzle 5 ... Fixed washing nozzle 6 ... Pump 7 ... Solenoid valve 8 ... Water level detection means 9 ... Operation panel 10 ... Blower fan 11 ... Hot air heater 12 ... Control device 13 ... Exhaust port 20a ... Eddy current jet port 20b, 20c, 20d, 20e ... Wash water jet port 21 ... Nozzle upper member 22 ... Nozzle lower member 25 ... Swirl chamber rib 26 ... Swirl chamber convex 27 ... Swirl chamber 28 ... Washing water introduction port 29 ... guide rib 30 ... sphere rotation center support member 31 ... sphere member swirl chamber 32 ... sphere member

Claims (6)

In the dishwashing machine provided with the washing water jetting means arranged to jet the washing water to the dishes stored in the tableware storage for storing the tableware,
The washing water injection means
It is provided in the tableware storage so as to be rotatable through a vertical rotation shaft, and is configured to extend from the rotation shaft to both sides, and a water passage is formed inside the upper member and the lower member. And a rotary cleaning nozzle provided with a plurality of injection ports on the upper surface of the upper member,
One of the injection ports provided on the upper surface of the rotary cleaning nozzle, and injects the cleaning water supplied from the water passage to the dishes, and an injection unit with a fixed injection direction;
The tableware is one of the injection ports provided on the upper surface of the rotary cleaning nozzle and provided at a position different from the injection unit, while rotating the injection direction of the cleaning water supplied from the water passage. An eddy current jetting unit that jets cleaning water to the
The swirl jet part is
A vortex jet formed at a position protruding upward from the upper surface of the rotary cleaning nozzle;
A spherical swirl chamber formed at a position protruding upward from the upper surface of the rotary cleaning nozzle, and provided in the lower periphery of the vortex flow jet port inside the vortex flow jet portion;
At least one sphere member capable of turning in the sphere turning chamber;
A lower swirl chamber provided in the water passage space at a lower portion of the spherical swirl chamber, and communicated with the spherical swirl chamber;
The lower swirl chamber is
The swirl chamber rib is formed in an annular protrusion shape integrally extending from the upper member of the rotary cleaning nozzle toward the lower member, and the swirl chamber rib is formed in the rotary cleaning nozzle. The wash water is prevented from flowing from the gap with the lower member so as to be separated from the space of the water passage. On the other hand, one side surface of the swirl chamber rib is viewed in plan view. By forming an opening so as to be interrupted, a cleaning water inlet is formed,
The cleaning water flowing in from the cleaning water introduction port is configured so that a swirling flow is generated in the lower swirling chamber along the inner surface of the annular swirling chamber rib, and the swirling flow is provided above. A dishwasher configured to be supplied into the spherical swirl chamber in which a spherical member is stored.   The swirl jet unit and the jet unit are provided in the upper surface region on one side across the rotary shaft of the rotary cleaning nozzle, and the jet unit is provided upstream of the swirl jet unit on the rotary shaft side, 2. The dishwasher according to claim 1, wherein the vortex jetting unit is provided at a downstream position farthest from the rotating shaft.   The rotational axis of the rotary cleaning nozzle is positioned at the center of the rotary cleaning nozzle, the injection unit is positioned on the opposite side of the eddy current injection unit across the rotation axis, and the rotational trajectory of the eddy current injection unit is The dishwasher according to claim 1, wherein a pair of the dishwashers are provided at positions near the rotation locus of the vortex jetting unit. The swirl jet unit further includes a columnar sphere rotation support member for supporting the rotation of the sphere member at the center of the sphere swirl chamber and the center position of the vortex flow outlet.
2. The dishwasher according to claim 1, wherein the spherical rotating support member has an upper end area smaller than an area of the vortex outlet.   2. The dishwasher according to claim 1, wherein a guide rib for guiding the cleaning water to the cleaning water inlet is formed in the water passage of the rotary cleaning nozzle. The guide rib is formed integrally with the lower member of the rotary cleaning nozzle so as to extend from the lower member of the rotary cleaning nozzle toward the upper member of the rotary cleaning nozzle on the rotary shaft side of the swirl chamber rib. The dishwasher according to claim 5 , wherein a labyrinth structure is formed by the swirl chamber rib and the guide rib.