JP6031674B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher that accommodates and cleans an object to be cleaned such as tableware.

  A conventional dishwasher is configured as shown in FIG. Hereinafter, the configuration will be described. In FIG. 7, a washing tub 2 is formed inside the main body 1, a tableware basket 3 in which the tableware 4 is arranged in the cleaning tub 2, and a plurality of injection ports 5 a at the bottom of the cleaning tub 2 below the tableware basket 3. A cleaning nozzle 5 is provided. A heater 7 that heats cleaning water and drying air in the cleaning tank 2 and a residue filter 9 that filters out residues in the cleaning water are provided at the bottom of the cleaning tank 2, and a residue filter is provided outside the bottom of the cleaning tank 2. A cleaning pump 8 that pumps the cleaning water that has passed through 9 to the cleaning nozzle 5 is provided.

  In the above configuration, the cleaning water supplied to the cleaning tank 2 is warmed by the heater 7, sucked through the residue filter 9 by the cleaning pump 8, and pumped to the cleaning nozzle 5. The washing water sprayed vigorously from the ejection port 5a of the washing nozzle 5 hits the tableware 4 arranged in the tableware basket 3 to clean the tableware 4 and return to the washing pump 8 to repeat the circulation operation. The dishwasher thus performs washing and rinsing of the dishes 4 in this way. The cleaning nozzle 5 is rotatably disposed on the nozzle bearing 6 and is configured to always rotate due to a reaction force generated when the cleaning water pumped by the cleaning pump 8 is ejected obliquely upward from the ejection port 5a. (For example, refer to Patent Document 1).

JP 2003-47585 A

  However, in the conventional configuration, the time of the cleaning water sprayed from the cleaning nozzle 5 that hits the tableware 4 arranged in the tableware basket 3 is different due to the difference in the rotational speed of the cleaning nozzle 5 or the like. If the number of revolutions is fast, the time that the washing water hits the tableware 4 is short, but the number of times the washing water hits increases. Moreover, when rotation speed is slow, the time for which wash water hits the tableware 4 is long, and the frequency | count that wash water hits decreases. In addition, the orientation angle of the injection port 5 a for discharging the washing water of the washing nozzle 5 can be changed according to the number of arrangement points of the tableware 4 to be arranged in the tableware basket 3, the arrangement location, and the shape of the tableware 4. The rotation speed of the cleaning nozzle 5 is changed by adjusting the injection port 5a of the cleaning nozzle 5 so that the cleaning water hits the prepared tableware 4. In addition, the rotational speed of the motor 8a that drives the cleaning pump 8 changes due to the difference in the power supply frequency (50/60 Hz), and the discharge pressure of the cleaning water ejected from the ejection port 5a of the cleaning nozzle 5 differs, and the rotational speed changes. . Due to the above reasons, there is a problem that the cleaning performance is not stable.

  The present invention solves the above-described conventional problems, and even if there is a difference in the number of rotations of the cleaning nozzle 5 or variation, the tableware 4 placed in the tableware basket 3 can be reliably cleaned, and powerful cleaning is performed. The purpose is to provide a dishwasher capable of exerting power and stable washing performance.

The cleaning tank is provided inside the main body, the dishware basket in the cleaning tank for accommodating the object to be cleaned, a cleaning nozzle for cleaning the washing water is provided below the dishes basket by spraying on the cleaning object, wherein A nozzle bearing fixed to the cleaning tank and provided with the cleaning nozzle, and a cleaning pump for pumping cleaning water to the cleaning nozzle are provided, and the cleaning nozzle is moved upward by the pressure of the cleaning water generated by the operation of the cleaning pump. In addition, the nozzle bearing is provided with a guide portion so as to move downward by the stop of the cleaning pump, and rotate around the nozzle bearing as the cleaning nozzle moves up and down, when the cleaning nozzle is moved to the top stops the rotation, the cleaning nozzle, jetting washing water to the object to be cleaned with the rotation stopped state relative to the cleaning object contained in the dishes basket A dishwasher configured to so that.

  As a result, even if there are differences or variations in the number of rotations of the cleaning nozzle, it is possible to continue to apply cleaning water to the object to be cleaned such as tableware, improving the cleaning performance with a strong cleaning power and stable cleaning. A dishwasher having performance can be realized.

  The dishwasher of the present invention is a dishwasher that accommodates and cleans objects to be cleaned, such as tableware. An object to be washed can be washed, and the washing performance can be improved with a strong washing power and a dishwasher having a stable washing performance can be realized.

The longitudinal cross-sectional view of the dishwasher in Embodiment 1 of this invention (A) Side view of the washing nozzle of the dishwasher (b) Plan view of the washing nozzle of the dishwasher Enlarged view of the main part of the washing nozzle of the dishwasher The principal part expanded sectional view when the washing nozzle of the dishwasher is in a lowered state The principal part expanded sectional view when the washing nozzle of the dishwasher is in the rising state The conceptual diagram which expand | deploys on a plane and shows the relationship between the latching | locking part of the washing nozzle of the same dishwasher, and the guide part of a nozzle bearing Vertical section of a conventional dishwasher

1st invention provides the washing tank in the inside of a main body, the tableware basket which accommodates to-be-cleaned object in the said washing tank, the lower side of the said tableware basket is sprayed on the to-be-washed object, and it wash | cleans A cleaning nozzle that is fixed to the cleaning tank and on which the cleaning nozzle is installed, and a cleaning pump that pumps cleaning water to the cleaning nozzle, wherein the cleaning nozzle is water that is driven by the operation of the cleaning pump. The nozzle bearing is provided with a guide portion so as to move around the nozzle bearing as the washing nozzle moves up and down as the washing nozzle moves up and down. the guide portion, wherein when the cleaning nozzle is moved to the top stops the rotation, the washing nozzle, the object to be cleaned with the rotation stopped state relative to the cleaning object contained in the dishes basket A dishwasher, characterized in that configured the washing water to inject.

  With this configuration, it is possible to reliably clean objects to be cleaned such as tableware placed in a tableware basket in response to differences in the state of the objects to be cleaned such as tableware and the number of rotations of the cleaning nozzle, improving the cleaning performance. In addition, a dishwasher with stable washing performance can be realized. In addition, washing water can be sprayed onto the object to be cleaned continuously for a certain amount of time in a state where the rotation of the cleaning nozzle is stopped, and it can be cleaned with a strong cleaning power, realizing a dishwasher with a wider range of cleaning performance. can do.

  According to a second invention, in the first invention, the guide portion includes an upper guide portion for controlling rotation of the cleaning nozzle when the cleaning nozzle moves upward, and the guide portion when the cleaning nozzle moves downward. A dishwasher having a lower guide for controlling the rotation of the washing nozzle, which can be finely and individually controlled in both the ascending and descending directions, and the objects to be washed such as dishes arranged in the dish basket, It can be washed more finely.

  A third invention is the dishwasher according to the second invention, wherein the upper guide portion and the lower guide portion are arranged by shifting the phases of the operation start points for controlling the rotation of the washing nozzle. When the nozzle rises, it is surely abutted and guided to the ascending rotation guide part, and when the cleaning nozzle is descended, it is surely abutted and guided to the descending rotation guide part to ensure that the washing nozzle is rotated. And a dishwasher with stable washing performance can be realized.

  A fourth invention is the dishwasher according to the second or third invention, wherein the upper guide part includes a rising rotation restricting part for restricting the upward movement and rotation of the washing nozzle, and the washing nozzle is Washing water can be applied to an object to be cleaned such as tableware for a predetermined time in a rotation stopped state, and stable cleaning performance can be ensured. Further, when the cleaning nozzle is raised upward, it is not detached from the nozzle bearing, and the pressure loss of the cleaning water jet can be suppressed.

  A fifth invention is the dishwasher according to any one of the first to fourth inventions, wherein the guide portion is provided at an outermost peripheral portion of the nozzle bearing and at a substantially same height as the bearing portion of the nozzle bearing. The cleaning nozzle is less affected by the force of twisting from the guide portion, especially during the upward rotation, and can smoothly perform the upward rotation.

  According to a sixth invention, in any one of the first to fifth inventions, the cleaning nozzle is linearly moved substantially upward by the pressure of the cleaning water generated by the operation of the cleaning pump at the start of the operation of the cleaning pump. The dishwasher can shorten the time until the cleaning nozzle is started to rotate by the guide unit, and can efficiently repeat the rotation and stop of the cleaning nozzle.

  In a seventh aspect based on any one of the second to sixth aspects, the cleaning nozzle includes a locking portion that is locked and guided by the upper guide portion and the lower guide portion, The section is a dishwasher that is pressed against the upper guide part by the pressure of the washing water by the operation of the washing pump, and when the washing nozzle is raised, the locking part is reliably pressed against the upper guide part, guided, and washed. The nozzle can be rotated stably and reliably.

  In an eighth aspect based on any one of the second to seventh aspects, the cleaning nozzle includes a locking portion that is locked and guided by the upper guide portion and the lower guide portion, Is a dishwasher that is in non-contact with the upper guide at the start of operation of the washing pump, and the washing nozzle at the start of operation of the washing pump with relatively weak pressure of washing water that pushes up the washing nozzle Can be raised smoothly.

  In a ninth aspect based on the second to eighth aspects, the cleaning nozzle includes a locking portion that is locked and guided by the upper guide portion and the lower guide portion, and the locking portion includes: A dishwasher that is equally distributed on the circumference and in which the number of the locking portions and the number of the upper guide portions and the lower guide portions are the same number. An asymmetric twisting force does not act on the nozzle, and the operation of the ascending and descending rotations of the cleaning nozzle can be made smooth. Further, it is possible to prevent the ascending rotation and the descending rotation of the cleaning nozzle from being stopped halfway by twisting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
The structure of the dishwasher in Embodiment 1 of this invention is demonstrated. 1 is a longitudinal sectional view of a dishwasher according to Embodiment 1 of the present invention. In FIG. 1, the dishwasher has a washing tub 2 formed inside a main body 1, and a tableware basket 3 (object to be cleaned) can be placed inside the washing tub 2, and a tableware basket 3 can be taken in and out from the opening 10 on the front surface. It is arranged. A cleaning nozzle 5 having a plurality of injection ports 5 a is provided below the table basket 3 at the bottom in the cleaning tank 2. A heater 7 for heating the cleaning water and drying air in the cleaning tank 2 and a residue filter 9 for filtering the residue in the cleaning water are provided at the bottom of the cleaning tank 2. A cleaning pump 8 that pumps cleaning water that has passed through the residue filter 9 to the cleaning nozzle 5 is disposed outside the bottom of the cleaning tank 2. The cleaning pump 8 is driven by a motor 8a.

  Next, the structure of the washing nozzle 5 of the dishwasher in Embodiment 1 of this invention is demonstrated. FIG. 2A is a side view showing the cleaning nozzle 5 supported by the nozzle bearing 6, and FIG. 2B is a plan view of the cleaning nozzle 5. FIG. 3 is an enlarged view of a main part showing a configuration in which the cleaning nozzle 5 is supported by the nozzle bearing 6. 4 and 5 are enlarged cross-sectional views of the main part showing the relationship between the cleaning nozzle 5 and the nozzle bearing 6.

  In FIG. 2 (a), the cleaning nozzle 5 is formed in a substantially cylindrical shape with its central lower portion having an axial direction in the substantially vertical direction, and a nozzle bearing fixed to the inner bottom portion of the cleaning tank 2 at its central lower portion. 6 is arranged to be rotatable and vertically movable. A detailed configuration in which the cleaning nozzle 5 is supported by the nozzle bearing 6 so as to be rotatable and vertically movable will be described in detail later. As shown in FIG. 2B, the cleaning nozzle 5 is formed in a shape having a pair of wing parts 52 on the left and right of the center part 51 when viewed from above. The pair of wing parts 52 are formed so as to be curved in a direction that is point contrast with respect to the central part 51.

  2A and 2B, a plurality of injection ports 5a are provided on the upper surfaces of the pair of left and right wing portions 52 of the cleaning nozzle 5, respectively. The cleaning nozzle 5 is indicated by an arrow A in FIG. 2 (b) centering on the nozzle bearing 6 due to a reaction force generated when the cleaning water pumped by the cleaning pump 8 is sprayed obliquely upward from the injection port 5a. Rotate in the direction.

  As shown in FIGS. 4 and 5, the cleaning nozzle 5 has a vertical flow path 53 and a pair of left and right horizontal flow paths 54 therein. The lower end of the vertical flow path 53 communicates with the cleaning pump 8 while being supported by the nozzle bearing 6 even when the cleaning nozzle 5 is in any state of rotation, vertical movement, and stop. The upper end portion of the vertical channel 53 is integrally formed continuously with the pair of left and right horizontal channels 54. The pair of left and right horizontal channels 54 communicate with the ejection port 5a. The cleaning nozzle 5 moves upward when the cleaning water pumped from the cleaning pump 8 through the vertical flow path 53 is strongly sprayed on the inner surface of the central portion 51, and moves downward by its own weight when the pumping of the cleaning water is stopped. Move to.

  Further, the cleaning nozzle 5 is provided with a sliding portion 56 on the outer periphery outside the vertical flow path 53 that enables the vertical movement and rotation around the nozzle bearing 6. The sliding portion 56 includes an upper sliding portion 56 a and a lower sliding portion 56 b, and is fitted to a bearing portion 63 provided vertically at the center portion of the nozzle bearing 6. With this configuration, the cleaning nozzle 5 is supported by the nozzle bearing 6 so as to be rotatable and vertically movable.

  As shown in FIGS. 3 to 5, in the lower part of the center of the cleaning nozzle 5, on the further outer side of the vertical flow path 53 and the sliding part 56, a locking part 55 having an inward claw 5 b is concentrically arranged. A plurality of them are equally arranged (for example, four at intervals of 90 °). The plurality of locking portions 55 are formed of a resin material, and an upper portion of the claw 5b serves as a support portion 5c that can be elastically deformed. The center of the circle where the plurality of locking portions 55 are arranged is substantially coincident with the center of the central portion 51. The locking portion 55 is positioned at a height between the upper sliding portion 56a and the lower sliding portion 56b.

  When the cleaning nozzle 5 is pushed into the nozzle bearing 6 from above, the sliding portion 56 is fitted to the bearing portion 63 of the nozzle bearing 6, the support portion 5 c is elastically deformed, and the claw 5 b is moved to a nozzle bearing 6 described later. The guide part 62 is engaged with the nozzle bearing 6 so as to be rotatable and vertically movable.

  Next, the structure of the nozzle bearing 6 of the dishwasher in Embodiment 1 of this invention is demonstrated. The nozzle bearing 6 moves the cleaning nozzle 5 up and down and intermittently according to the operation or stop of the cleaning pump 8, that is, the pumping of the cleaning water to the cleaning nozzle 5 or the stop of the pumping. By the cooperation of the nozzle bearing 6 and the washing nozzle 5, the washing water is jetted from the jetting port 5a toward the tableware 4 by combining jetting while rotating and jetting after stopping the rotation.

  3 to 5, the nozzle bearing 6 is formed in a substantially hollow cylindrical shape. The nozzle bearing 6 supports the cleaning nozzle 5 so as to be rotatable and vertically movable by a bearing portion 63 provided in the center in a vertically long manner. In addition, the nozzle bearing 6 has an outer peripheral portion 61 that is substantially the outermost periphery formed in a circular shape, and a guide portion 62 is provided on the outer peripheral portion 61. The guide part 62 is provided at substantially the same height as the bearing part 63 of the nozzle bearing 6.

  The guide unit 62 rotates the cleaning nozzle 5 around the nozzle bearing 6 as the cleaning nozzle 5 moves up and down. The guide unit 62 includes an upper guide unit 62a that controls the rotation of the cleaning nozzle 5 when the cleaning nozzle 5 moves upward, and a lower guide unit 62b that controls the rotation of the cleaning nozzle 5 when the cleaning nozzle 5 moves downward. Have The cleaning nozzle 5 engaged with the guide portion 62 by the claw 5b of the locking portion 55 is restricted from moving upward by the upper guide portion 62a and restricted from moving downward by the lower guide portion 62b. As shown in FIG. 4, the claw 5b of the locking portion 55 of the cleaning nozzle 5 contacts the upper guide portion 62a before the cleaning nozzle 5 moves upward, that is, at the start of operation of the cleaning pump 8. Not configured to be.

  FIG. 6 is a conceptual diagram showing the relationship between the upper guide portion 62a and the lower guide portion 62b of the guide portion 62 and the claw 5b of the cleaning nozzle 5 on a plane. In FIG. 6, the upper guide portion 62a includes a rising rotation guide portion 62a1 having a rising inclination of a predetermined angle B (for example, 15 °) and a rising rotation restricting portion 62a2 formed in a substantially vertical direction as a set, at predetermined angular intervals. And a plurality of sets (for example, four sets at 90 ° intervals). The lower guide portion 62b includes a set of a downward rotation guide portion 62b1 having a downward inclination (for example, 15 °) at a predetermined angle C and a downward restriction portion 62b2 formed in a substantially horizontal direction as a set (for example, a plurality of sets (for example, , 4 sets at 90 ° intervals). Each set of the upper guide part 62a and each set of the lower guide part 62b are arranged with a phase shifted by a predetermined angle D (for example, 15 °).

  As shown in FIG. 6, the claw 5b of the locking portion 55 has the upper surface inclined at substantially the same angle as the rising rotation guide portion 62a1, and the lower surface at substantially the same angle as the inclination angle of the descending rotation guide portion 62b1. In this case, the cleaning nozzle 5 can move up and down and rotate smoothly, and can withstand long-term use in terms of wear resistance.

  About the dishwasher comprised as mentioned above, the operation | movement and an effect | action are demonstrated. In FIG. 1, the cleaning water in the cleaning tank 2 is heated by a heater 7, sucked through a residue filter 9 by a cleaning pump 8, and pumped to the cleaning nozzle 5. At this time, the cleaning pump 8 repeatedly drives and stops the cleaning water to the cleaning nozzle 5 at predetermined time intervals by intermittently driving the motor 8a.

As shown in FIGS. 5 and 6, when the cleaning pump 8 is operated, the cleaning nozzle 5 is driven by the force of the cleaning water sprayed from the nozzle bearing 6 to the inner surface of the central portion 51 via the vertical flow path 53. Ascending upward, the claw 5b of the locking part 55 is pressed against the upper guide part 62a of the nozzle bearing 6 and rotates along the ascending rotation guide part 62a1, and the washing nozzle 5 sprays washing water onto the tableware 4 while rotating. . At this time, at the start of operation of the cleaning pump 8, the cleaning nozzle 5 moves in a substantially upward direction by the pressure of the cleaning water generated by the operation of the cleaning pump 8 acting uniformly on the inner surface of the central portion 51.

  Eventually, the claw 5b goes up along the ascending rotation guide portion 62a1, contacts the ascending rotation restricting portion 62a2, and enters the trough portion 62a3 between the ascending rotation guiding portion 62a1 and the ascending rotation restricting portion 62a2 to stop. The washing nozzle 5 sprays washing water onto the tableware 4 in a rotation stopped state. As a result, the dishwasher improves the washing performance with a strong washing power and ensures a stable washing performance by applying washing water to the tableware 4 placed and accommodated in the tableware basket 3 continuously for a predetermined time. Can do.

  Next, when the cleaning pump 8 is stopped, the pumping of the cleaning water to the cleaning nozzle 5 is stopped. The cleaning nozzle 5 loses the ascending force due to the cleaning water sprayed on the inner surface of the central portion 51, and the claw 5 b is detached downward from the upper guide portion 62 a by the weight of the cleaning nozzle 5 as shown in FIGS. 4 and 6. . The lowered cleaning nozzle 5 stops with the claw 5b abutting on the descending rotation guide part 62b1, descending along the descending rotation guide part 62b1, and stopped in the middle of the descending rotation guide part 62b1 or on the descending restricting part 62b2.

  By repeating the operation and stop of the cleaning pump 8 described above, the cleaning nozzle 5 repeats rotation injection of cleaning water, injection in a rotation stop state, and injection stop. As a result, the dishwasher of the present invention can inject cleaning water continuously onto the tableware 4 for a predetermined time even when the rotation of the cleaning nozzle 5 is stopped, in addition to the conventional rotational injection from the cleaning nozzle 5. The cleaning performance can be improved with a strong cleaning power. In particular, if a very dirty object is accommodated at the stop position of the cleaning nozzle 5, a strong cleaning power can be used more effectively.

  At this time, each set of the upper guide part 62a and each set of the lower guide part 62b are arranged by shifting the phase by a predetermined angle D (for example, 15 °), and are the operation start points for controlling the rotation of the cleaning nozzle 5. By shifting the phases from each other, when the cleaning nozzle 5 is raised, the claw 5b is surely brought into contact with and guided by the ascending rotation guide portion 62a1, and the washing nozzle 5 is reliably rotated. Further, when the cleaning nozzle 5 is lowered, the claw 5b is surely brought into contact with and guided by the descending rotation guide portion 62b1, and the cleaning nozzle 5 is reliably rotated.

  At this time, the locking portion 55 of the cleaning nozzle 5 is pressed against the upper guide portion 62a by using the upward force of the cleaning water generated by the operation of the cleaning pump 8, so that the locking nozzle 55 is locked when the cleaning nozzle 5 is raised. The claw 5b of the portion 55 is reliably pressed and guided to the ascending rotation guide portion 62a1, and the cleaning nozzle 5 can be rotated stably and reliably.

  As described above, by repeating the operation and stop of the cleaning pump 8, the cleaning nozzle 5 is supported by the bearing portion 63 of the nozzle bearing 6 and is guided by the guide portion 62 to perform upward and downward rotation. At this time, the guide portion 62 is provided at the outermost peripheral portion of the nozzle bearing 6 and at substantially the same height position as the bearing portion 63 of the nozzle bearing 6, so that the cleaning nozzle 5 is guided especially during the upward rotation. It is less affected by the force of twisting from the part 62 and can be smoothly rotated upward.

  Further, since the cleaning nozzle 5 is caused to move substantially upward due to the pressure of the cleaning water generated by the operation of the cleaning pump 8 at the start of the operation of the cleaning pump 8, the cleaning nozzle 5 is started to rotate by the guide unit 62. Can be shortened to the shortest.

  Further, since the locking portion 55 of the cleaning nozzle 5 is not in contact with the upper guide portion 62a at the start of operation of the cleaning pump 8, the pressure of the cleaning water that pushes up the cleaning nozzle 5 is relatively weak. Even at the start of operation, the cleaning nozzle 5 can be raised smoothly, and can move to a rotating state after a momentum of rising.

  Further, the upper guide part 62a is provided with the rising rotation restricting part 62a2 for restricting the upward movement and rotation of the cleaning nozzle 5, so that when the cleaning nozzle 5 is moved upward, the claw 5b enters the valley part 62a3. Since the cleaning nozzle 5 is reliably held, the cleaning nozzle 5 can continuously apply the cleaning water to the tableware 4 for a predetermined time in a rotation stopped state, and a strong cleaning power and stable cleaning performance can be ensured. Further, the cleaning nozzle 5 is not detached from the nozzle bearing 6, and the pressure loss of the cleaning water jet can be suppressed.

  Further, by disposing the locking portions 55 on the circumference at equal intervals (for example, four at intervals of 90 °), an asymmetrical squeezing force acts on the cleaning nozzle 5 when the cleaning nozzle 5 is rotated up and down. Therefore, the ascending rotation and the descending rotation can be performed smoothly. Further, it is possible to prevent the upward and downward rotations of the cleaning nozzle 5 from being stopped by twisting.

  The number of the locking portions 55 and the guiding portions 62 is the same number in the first embodiment, and four each, but for example, the number of the locking portions 55 and the number of the guiding portions 62 may be eight. Also, there are two locking portions 55, four guiding portions 62, six and eight, etc., and three locking portions 55, three guiding portions 62, six and nine, etc. The number of the guide portions 62 may be an integer multiple of the number of the locking portions 55. At this time, the ascending inclination of the ascending rotation guide part 62a1 and the angle of the descending inclination of the descending rotation guide part 62b1 can be arbitrarily set. Further, the ascending rotation restricting part 62a2 of the guide part 62 is not necessarily arranged around the periphery. It is not necessary to arrange them at equal intervals on the upper side, and in short, they may be configured so that the combination with the locking portion 55 does not shift.

  Further, the direction in which the cleaning nozzle 5 is rotated by the guide portion 62 of the nozzle bearing 6 matches the direction in which the cleaning nozzle 5 is rotated in response to the reaction force of the cleaning water sprayed from the spray port 5a. The power of the washing water pumped from the washing pump 8 can be used effectively, which is convenient.

  Further, the cleaning pump 8 may repeatedly pump and stop the cleaning water to the cleaning nozzle 5 at intentionally different time intervals by intermittently driving the motor 8a according to a programmed time chart. If comprised in this way, various washing | cleaning, such as increasing / decreasing injection of the washing water in the state in which the washing nozzle 5 has stopped rotating, can be made possible.

  Further, the ejection port 5 a of the cleaning nozzle 5 may be configured to be rotatable on the upper surface of the cleaning nozzle 5. If comprised in this way, since the direction of the washing water sprayed from the injection nozzle 5a can be optimized according to the number of arrangement points of the tableware 4 arranged in the tableware basket 3, the arrangement location, and the shape of the tableware 4, The cleaning performance can be further improved.

  As described above, the dishwasher according to the present invention is a dishwasher that accommodates and cleans an object to be cleaned such as tableware. Can be continuously applied to the object to be cleaned for a predetermined time, and a strong cleaning power and stable cleaning performance can be obtained. Therefore, it is useful as a table-type and built-in type dishwasher for home use.

1 Body 2 Washing tank 3 Tableware basket 4 Tableware (objects to be cleaned)
DESCRIPTION OF SYMBOLS 5 Washing nozzle 5a Injecting port 5b Claw 5c Support part 6 Nozzle bearing 7 Heater 8 Washing pump 8a Motor 9 Residual filter 10 Opening part 51 Central part 52 Wing part 53 Vertical flow path 54 Horizontal flow path 55 Locking part 56 Sliding part 56a Upper sliding part 56b Lower sliding part 61 Outer peripheral part 62 Guide part 62a Upper guide part 62a1 Ascending rotation guide part 62a2 Ascending rotation restricting part 62a3 Valley part 62b Lower guiding part 62b1 Lowering rotating guide part 62b2 Lowering restricting part 63 Bearing part

Claims (9)

The cleaning tank is provided inside the main body, the dishware basket in the cleaning tank for accommodating the object to be cleaned, a cleaning nozzle for cleaning the washing water is provided below the dishes basket by spraying on the cleaning object, wherein A nozzle bearing fixed to the cleaning tank and provided with the cleaning nozzle, and a cleaning pump for pumping cleaning water to the cleaning nozzle are provided, and the cleaning nozzle is moved upward by the pressure of the cleaning water generated by the operation of the cleaning pump. In addition, the nozzle bearing is provided with a guide portion so as to move downward by the stop of the cleaning pump, and rotate around the nozzle bearing as the cleaning nozzle moves up and down, when the cleaning nozzle is moved to the top stops the rotation, the cleaning nozzle, jetting washing water to the object to be cleaned with the rotation stopped state relative to the cleaning object contained in the dishes basket Dishwasher, characterized by being configured to so that. The guide unit includes an upper guide unit that controls rotation of the cleaning nozzle when the cleaning nozzle moves upward, and a lower guide unit that controls rotation of the cleaning nozzle when the cleaning nozzle moves downward. The dishwasher according to claim 1. The dishwasher according to claim 2, wherein the upper guide part and the lower guide part are arranged with the phases of the operation start points for controlling the rotation of the washing nozzle being shifted from each other. The dishwasher according to claim 2 or 3, wherein the upper guide portion includes a rising rotation restricting portion that restricts upward movement and rotation of the washing nozzle. The dishwasher according to any one of claims 1 to 4, wherein the guide portion is provided at an outermost peripheral portion of the nozzle bearing and at a substantially same height as a bearing portion of the nozzle bearing. The dishwasher according to any one of claims 1 to 5, wherein the washing nozzle moves linearly in a substantially upward direction by the pressure of washing water generated by the operation of the washing pump at the start of operation of the washing pump. The cleaning nozzle includes a locking portion that is locked and guided by the upper guide portion and the lower guide portion, and the locking portion is connected to the upper guide portion by the pressure of cleaning water generated by the operation of the cleaning pump. The dishwasher according to any one of claims 2 to 6, which is pressed. The cleaning nozzle includes a locking portion that is locked and guided by the upper guide portion and the lower guide portion, and the locking portion is not separated from the upper guide portion at the start of operation of the cleaning pump. The dishwasher according to any one of claims 2 to 7, wherein the dishwasher is in contact. The cleaning nozzle includes a locking portion that is locked and guided by the upper guide portion and the lower guide portion, and a plurality of the locking portions are equally arranged on a circumference, and the locking portion The dishwasher according to any one of claims 2 to 8, wherein the number of the upper guide portions and the number of the lower guide portions are the same.