CN101406380A - Machine for cleaning dishware - Google Patents

Abstract

The invention provides a dish washer, which comprises: a body of the dish washer; a wash tank; a dish basket; a wash pump; A water device; and a plurality of cleaning nozzles having a plurality of spray paths and spraying cleaning water to the object to be cleaned, the water dividing device includes: a valve box communicating with the cleaning pump and having an inflow portion for the cleaning water to flow in; The water diversion passages of multiple outflow paths connected and connected to the multiple spray paths; and the valve core arranged in the valve box and selectively diverting the inflowing cleaning water to the multiple outflow paths, the water diversion passages are integrally formed into multiple At least one of the two outflow paths can be removed from the cleaning tank to install and disassemble the valve core in the cleaning tank.

Description

dish washer

technical field

The present invention relates to a dishwasher for washing tableware and the like.

Background technique

The so-called built-in dishwasher is provided as a separate housing as shown in JP2005-73992, or as shown in JP1994-169821, which is integrated into kitchen furniture such as a sink.

This built-in type dishwasher has the feature of being easier to increase the capacity compared to the load type dishwasher, and is suitable for washing a large number of dishes at one time. As shown in the above document, washing water pressurized by a washing pump is sprayed over a wide area with rotation from a large rotating washing nozzle having a rotation center approximately in the center of the bottom of the washing tank to wash dishes. In addition, the spraying conditions of the washing water need to be set to be optimal in consideration of the relationship with the arrangement direction of the tableware and the like.

In addition, in order to save energy and fast processing, it is desirable for the dishwasher to save water and shorten the washing time. However, in order to ensure the degree of freedom of entry and exit of tableware, the tableware basket may not allow the tableware placement position to meet the above-mentioned optimal conditions for spraying the washing water. In addition, the washing conditions of tableware may vary from time to time, making it difficult to perform optimal washing at all times.

Corresponding to this, it can be considered to increase the cleaning ability by increasing the number of cleaning nozzles and the cleaning spray path. On the other hand, in order to simultaneously operate a plurality of washing nozzles and a plurality of discharge paths, it is necessary to divide the washing water from the washer pump into the respective discharge paths of the washing nozzles. In this case, if the water is divided into each spray path and the washing water is supplied to all the washing nozzles at the same time, the total amount of water for circulating the washing water will increase, and the running cost will increase. In addition, the injection pressure of the washing water is lowered, or the injections of the plurality of washing nozzles interfere with each other, thereby reducing the washing efficiency.

Here, although it is possible to divide water into a plurality of cleaning nozzles and discharge paths in a time-division manner, a valve structure for water division is required. In addition, increasing the number of cleaning nozzles and spray paths will complicate the water separation structure accordingly, and if it becomes complicated, foreign matter such as scale will easily adhere. For this reason, it is desirable that the valve and the discharge path for water separation be washable, and that the valve be replaceable in case of failure due to the increase in the number of switching of the valve.

Contents of the invention

The dishwasher of the present invention includes: a dishwasher body having an opening at the front; a washing tank provided so as to be freely drawn out relative to the above-mentioned dishwasher body and having an opening above; accommodated in the washing tank and placed A tableware basket for washing items; a washing pump for pressurizing washing water for washing the washing items; a water distribution device for selectively supplying washing water pressurized by the washing pump to a plurality of spray paths; and a plurality of Cleaning nozzles, these cleaning nozzles have multiple spraying paths, and spray cleaning water on the object to be cleaned, and the water diversion device includes: a valve box, which communicates with the cleaning pump and has an inflow part for the cleaning water to flow in; passage, which has a plurality of outflow paths connected to the valve box and communicated with a plurality of spray paths; At least one of the above-mentioned outflow paths is formed integrally with the water diversion channel, and the valve core can be installed and disassembled in the cleaning tank by removing the water diversion channel from the cleaning tank.

In the dishwasher with this structure, when the washing pump is driven after water is supplied to the washing tank of the dishwasher body, the washing pump sucks in the washing water in the washing tank and pressurizes it, thereby sending the washing water to the water distribution device. The water diversion device divides the washing water to the plurality of spray paths of the plurality of washing nozzles via the plurality of outflow paths simultaneously or time-divisionally. Therefore, it is possible to utilize the cleaning effect of a plurality of cleaning nozzles and a plurality of discharge paths they have. Washing water is sprayed into the washing tank in a plurality of patterns from a plurality of nozzle positions, so that the objects to be washed placed in the dish basket can be washed.

In addition, at least one of the plurality of outflow channels is integrally formed in the water separation channel, and can be detached or installed in the washing tank together with the integrally formed outflow channel. Therefore, even if the water diversion passage has a plurality of outflow paths, it can be cleaned and reused independently of the valve box with both ends of the outflow paths opened. In addition, by disassembling the water diversion channel, the valve box can be opened in the cleaning tank, and the valve core therein can also be disassembled from or accommodated in the cleaning tank.

Description of drawings

FIG. 1 is a cross-sectional view illustrating a schematic configuration of a dishwasher according to an embodiment of the present invention.

Fig. 2 is a perspective view of the water separating device and the rotating cleaning nozzle of the dishwasher.

Fig. 3 is a cross-sectional view showing a water diversion function part of a valve box of the water diverter device using the dishwasher.

Fig. 4 is a sectional view of main parts showing the installation structure of the water diverting device of the dishwasher.

Fig. 5 is a horizontal cross-sectional view of an outflow path and an outflow port of the water separating device of the dishwasher.

Fig. 6 is a plan view of a main part of the rotary washing nozzle of the dishwasher in section.

Fig. 7 is a bird's-eye view of the inside of the washing tank of the dishwasher.

Fig. 8A is an explanatory diagram showing an exploded view of the valve body operating mechanism of the dishwasher.

Fig. 8B is an explanatory diagram showing an exploded view of the valve body operating mechanism of the dishwasher.

Fig. 8C is an explanatory diagram showing an exploded view of the valve body operating mechanism of the dishwasher.

Fig. 8D is an explanatory diagram showing an exploded view of the valve body operating mechanism of the dishwasher.

Fig. 9 is a perspective view showing a placed state of a dish basket and dishes used in the dishwasher.

Fig. 10 is a perspective cross-sectional view showing another structure of a water diversion device and a washing tank used in the dishwasher.

Detailed ways

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Also, the present invention is not limited to this embodiment.

(implementation mode)

FIG. 1 is a cross-sectional view illustrating a schematic configuration of a dishwasher according to an embodiment of the present invention. The dishwasher 100 is composed of a dishwasher body 2 , a washing tank 4 , dish baskets 6 and 7 , a washing/draining pump 8 , a rotating washing nozzle 12 , a non-rotating washing nozzle 13 , and a water diversion device 14 .

In addition, instead of the washing/draining pump 8, separate pumps for washing and draining, that is, a washing pump and a draining pump may be used. Thereby, the installation of piping and pumps for cleaning, and the arrangement of piping and pumps for drainage can realize respective optimal designs.

Here, the dishwasher body 2 has an opening 1 at the front. The cleaning tank 4 is arranged in the dishwasher body 2 and can be freely drawn out relative to the dishwasher body 2 , and has an opening 3 above the cleaning tank 4 . The dish baskets 6 and 7 are used to place the objects to be washed, such as dishes, stored in the washing tank 4 . The washing/draining pump 8, which is a washing pump that pressurizes washing water for washing objects, pressurizes the washing water for washing with the forward rotation of the motor, and drains water with the reverse rotation of the motor.

In addition, although the cleaning/drainage pump 8 of the embodiment of the present invention performs cleaning and drainage according to the above-mentioned method, an electronic valve or the like may be provided in the middle of the path for delivering cleaning water from the cleaning/drainage pump 8 to switch between cleaning and drainage. .

A plurality of washing nozzles having a plurality of spraying paths and spraying washing water to objects to be cleaned are composed of rotating washing nozzles 12 and non-rotating washing nozzles 13 . The rotary washing nozzle 12 is located substantially at the center of the bottom surface 4 a of the washing tank 4 , and has at least one spray path through which washing water pressurized by the washing/drain pump 8 is sprayed. By arranging the rotating cleaning nozzle 12 substantially at the center of the bottom surface 4a, the cleaning effect is improved by rotation, and the spraying area of cleaning water is easily spread over the entire cleaning tank 4 .

In addition, the non-rotating cleaning nozzle 13 is provided on at least one of the rear wall 4c of the peripheral wall 4b of the cleaning tank 4, one of the side walls 4d and 4e on both sides, and the front wall 4f. In addition, the non-rotating washing nozzle 13 has at least one spray path through which washing water is sprayed.

The water separating device 14 selectively supplies washing water to one or more spray paths of the rotating washing nozzle 12 and the non-rotating washing nozzle 13 .

After supplying water to the cleaning tank 4 of the dishwasher body 2, when the motor of the cleaning/drainage pump 8 is rotated forward, the cleaning/draining pump 8 sucks the cleaning water in the cleaning tank 4 to pressurize it, and sends it out to the water dividing device 14. . The water distributing device 14 selectively supplies water to one or more spray paths of the rotating cleaning nozzle 12 and one or more spray paths of the non-rotating cleaning nozzle 13 at the same time or time-divisionally. Therefore, the rotating washing nozzle 12 and the non-rotating washing nozzle 13 can be operated in a complementary manner. As a result, the washing water can be sprayed into the washing tank 4 in various forms from the bottom surface 4a and the plurality of nozzle positions on the surrounding wall 4b of the washing tank 4, so that the washing water placed on the dish baskets 6, 7, etc. can be cleaned. The object to be cleaned is cleaned.

In this way, various settings can be made for the spray area, spray density, and spray angle of the cleansing water, and the cleansing efficiency can be improved by spraying without dead space. In addition, if the mutually interfering spray patterns are time-divided, the cleaning effect will not be reduced, and the waste of spraying can be reduced. Therefore, it is preferable to use the rotating washing nozzle 12 for washing with the highest priority, and it is preferable to use the non-rotating washing nozzle 13 as an auxiliary for washing failure caused by the tableware placement position. In this way, the total amount of water required for the circulation can be controlled according to the ratio of dividing the water to the plurality of spray paths in time division, thereby reducing the operating cost and further reducing the pressure loss.

In addition, when the motor of the washing/drainage pump 8 is reversed after washing the dishes, the water of the rotating washing nozzle 12 and the non-rotating washing nozzle 13 will be transferred from the water diversion device 14 along with the washing water in the washing tank 4. The remaining water is drained.

In addition, when one of the surrounding walls 4b along which the cleaning/drainage pump 8 is located is the rear wall 4c or the side walls 4d, 4e, etc., the cleaning/drainage pump 8 is connected to the pipe introduction surface such as the outer wall of the house and the partition wall. opposite. By doing so, it is possible to shorten the piping length from the piping introduction position to the washing/draining pump 8 .

In addition, by setting the side where the washing/drainage pump 8 deviates relative to the peripheral direction among the rear wall 4c, side walls 4d, 4e, and front wall 4f, to the side close to the pipe introduction position, the above-mentioned distance can be further shortened. Piping length. In the embodiment of the present invention, the washing/drainage pump 8 is provided outside the washing tank at the lower part of the rear wall 4c, and the water pipe and the pump for supplying water to the washing tank are connected by piping at the rear of the dishwasher, thereby Piping length can be shortened.

In addition, when the washing/draining pump 8 is arranged near the front of the side walls 4d, 4e or along the front wall 4f, since the washing/draining pump 8 is close to the opening 1 of the dishwasher body 2, the washing/draining pump 8 setup and maintenance work becomes easy.

Here, the dishwasher body 2 is configured such that the height from the bottom surface 4a of the washing tank 4 to the rotary washing nozzle 12 is the water storage portion 4g, and further has the following structure. That is, the water supply valve 23 for supplying water to the water storage part 4g, the heater 25 arranged in the water storage part 4g, the drainage recess 4h for discharging water from the water storage part 4g, and the valve for sending warm air into the washing tank 4 A fan heater 27 for dish drying and a water level sensor 24 connected to the drain recess 4h. They are driven in good time by the control device 31, thereby sequentially controlling the procedures of washing, rinsing and drying.

In addition, in the dishwasher which concerns on embodiment of this invention, a drying course is not essential.

In addition, the water diversion device 14 includes a spool that operates to selectively supply the washing water in response to pressurization and depressurization of the washing water when the washing/drainage pump 8 is driven or stopped. Therefore, it is not necessary to directly control the water diversion device 14 by the control device 31, nor to control the washing water. However, the method of controlling and actuating the washing water is not limited to this, and, for example, switching drive may be performed by a dedicated actuator such as a motor.

Next, the water diversion device 14 will be described using FIGS. 2 to 5 . Fig. 2 is a perspective view of a water diversion device and a rotary washing nozzle of the dishwasher according to the embodiment of the present invention.

The water distribution device 14 is composed of a valve box 133 , a water distribution channel 48 and a valve core 32 . Here, the valve box 133 communicates with the washing/draining pump 8 and has an inflow portion 39 . The water distribution passage 48 has a plurality of outflow paths, and these outflow paths are connected to the valve box 133 and communicate with a plurality of discharge paths, respectively. Specifically, the water separation passage 48 communicates with the spray path 35 of the non-rotating cleaning nozzle 13, and has a plurality of outflow paths 36, 37, 38, at least one of which is integrally formed. . The spool 32 is provided in the valve box 133, and is switched so as to selectively divert the inflowing washing water to a plurality of outflow paths 36, 37, and 38. In addition, the lower part of the valve box 133 becomes a part of the bottom surface of the cleaning tank 4, and a part of the valve box 133 can be formed at the same time as the cleaning tank 4 is resin molded, thereby reducing the number of parts and reducing the cost.

Furthermore, by detaching the water diversion passage 48 from the cleaning tank 4 , the valve body 32 can be freely attached to and detached from the cleaning tank 4 . As a result, cleaning by passing water through the outflow paths 36 , 37 , and 38 , maintenance of the valve body 32 itself, and cleaning of the valve body 32 and the valve box 133 become easy. In addition, the complex passage structure and valve structure can be kept clean for a long time, and the normal function of the valve element 32 that performs complex switching operations can be easily ensured.

3 is a cross-sectional view showing a water diversion function part of a valve box of the water diversion device of the dishwasher according to the embodiment of the present invention. The water separation channel 48 integrally forms the plurality of outflow channels 36 , 37 , and 38 by ultrasonically fusing and fixing the upper and lower half shells.

In addition, the water diversion passage 48 is detachably fitted into a recess 49 provided on the bottom surface 4a of the cleaning tank 4 from above, and is attached so as not to have a step difference from the bottom surface 4a. And, the valve box 133 with the opening 133a above is fixed on the bottom 49a of the recess 49, and the connection port 48a connected to the installed water distribution channel 48 and the valve box 133 is detachable along the upper and lower sides via the sealing gasket 51. directions are connected.

Accordingly, when the water separation passage 48 is incorporated in the cleaning tank 4 , since the water separation passage 48 protrudes significantly into the cleaning tank 4 , no empty space is formed. In particular, if the upper surface 14a of the valve box 133 is substantially the same height as the bottom surface 4a of the adjacent cleaning tank 4, it will not be caught during cleaning, and it is possible to prevent interference with work or damage due to external force.

In addition, the gasket 51 is attached to the outer peripheral side of the connection port 48a to seal between the connection port 48a and the inner periphery of the opening 133a, but the gasket 51 may be attached to the inner peripheral side of the opening 133a in advance.

4 is a main part cross-sectional view showing the installation structure of the water diversion device of the dishwasher according to the embodiment of the present invention, and FIG. 5 is a horizontal cross-sectional view showing the outflow path and the outflow port of the water diverter device of the dishwasher.

The valve box 133 is connected to the outflow port 42 via outflow paths 36 , 37 , and 38 . Here, the outflow paths 36, 37 correspond to the connection port 12a concentric with the rotation center 11 of the rotary cleaning nozzle 12, and the outflow paths 36, 37 are connected through the respective outflow ports 36a, 37a.

In addition, the rotation support portion 41 supports the rotation cleaning nozzle 12 in a rotatable manner. Furthermore, the connection port 48a is located in the vicinity of the side wall 4d adjacent to the rear wall 4c along which the washing/drainage pump 8 is located. According to this configuration, the length of the piping from the water supply pipe to the rotary cleaning nozzle 12 and the non-rotating cleaning nozzle 13 via the cleaning/drainage pump 8 and the connection port 48 a can be shortened.

Next, the configuration of the water dividing device 14 including the configuration of the rotary cleaning nozzle 12 will be described in more detail using FIG. 2 , FIG. 4 , and FIG. 6 . Fig. 6 is a plan view of a main part of the rotary washing nozzle of the dishwasher according to the embodiment of the present invention cut away.

As shown in FIG. 4 , the water distributing device 14 freely rotatably supports the connection port 12 a of the rotary cleaning nozzle 12 through the rotating support portion 41 located at one end of the water distributing passage 48 . In addition, in the water diversion device 14 , the outflow port 37 a from the outflow path 37 to the discharge path 34 and the outflow port 36 a from the outflow path 36 to the discharge path 33 are opened to the rotary support portion 41 . Here, the outflow ports 36 a , 37 a are openings in an inner and outer double-layer passage structure concentric around the rotation center 11 . Through this opening, the two outflow paths 36 and 37 communicate with the two discharge paths 33 and 34 arranged point-symmetrically around the rotation center 11 at the rotation center 11 between both ends of the rotary cleaning nozzle 12 .

The introduction ports 12b, 12c of the discharge paths 33, 34 are opened to the connection port 12a as the introduction ports 12b, 12c in the inner and outer double passage structure concentric around the rotation center 11. The outlet ports 36a, 37a are connected to the inlet ports 12b, 12c by connecting the connection port 12a to the rotation support portion 41 . 2 and 6, the inlets 12b, 12c communicate with the discharge paths 33, 34 arranged point-symmetrically around the rotation center 11 in the intersecting area of the discharge paths 33, 34. That is, the two outflow paths 36 , 37 and the two discharge paths 33 , 34 are connected through an inner and outer double-layer path concentric with the rotation center 11 of the rotary cleaning nozzle 12 .

Through this structure, the flow of cleaning water from the outflow path 36 to the spray path 33 and the flow from the outflow path 37 to the spray path 34 during water separation will not generate pulsation or turbulence around the rotation center 11, but are in a relatively stable state. A state of steady, roughly equal laminar flow. This is because using the inner and outer double-layer channel structure concentric with the rotation center 11, the cleaning water can be evenly sprayed around the rotation center 11, thereby eliminating the relationship between the rotation of the rotary cleaning nozzle 12 and its rotation position.

As a result, the washing water is introduced into the spray paths 33 and 34 substantially equally. In addition, the washing water is introduced through the spray paths 33 and 34 without disturbing the rotation balance of the rotary washing nozzle 12 . Therefore, the rotary cleaning nozzle 12 does not vibrate, pulsate or rotate indefinitely when it rotates forward and reversely, but rotates stably, and the cleaning effect will not be reduced due to the rotation, nor will it be affected by the rotation position. And the situation of indefinite rotation occurs.

In addition, the channel cross-sectional areas for separating water from the outflow channels 36 , 37 of the inner and outer double-layer channels to the discharge channels 33 , 34 may be made equal to each other. In this way, the flow rate and flow velocity of the washing water supplied to the spray path for rotating the rotary washing nozzle 12 forward and the spray path for rotating the rotary washing nozzle 12 in the reverse direction can be equalized. In addition, the forward rotation and reverse rotation of the rotary washing nozzle 12 can be made at substantially the same speed, so that the spray pressures of the washing water can be made substantially equal.

In addition, the structure of the non-rotating cleaning nozzle 13 is any one of the following three types. The first type is a structure having only a rising portion 13b that rises independently as shown in FIG. The second is a structure having an ascending portion passing through a not-shown horizontal portion from the connection end 13a. The third is a structure having a horizontal portion 13c passing through a rising portion 13b from the connection end 13a as shown in FIG. 1 .

Next, the piping structure of the dishwasher according to the embodiment of the present invention will be described in more detail mainly using FIG. 2 and FIG. 7 . Fig. 7 is a bird's-eye view of the inside of the washing tank of the dishwasher according to the embodiment of the present invention. The washing/draining pump 8 , the water diverting device 14 , the rotating support 41 and the outflow port 42 can be arranged in an area A having a diagonal line connecting the rotation center 11 and one corner 43 of the bottom surface 4 a of the washing tank 4 . Here, the area A is approximately 1/4 of the area of the bottom surface 4a.

The valve box 133 is located between the rotary support 41 and the washing/draining pump 8 , and can be connected to the washing/draining pump 8 from a position closer to the rotating support 41 in the area A. In addition, the rotation support portion 41 is connected to the connection port 12 a of the rotation cleaning nozzle 12 and the connection end 13 a of the non-rotation cleaning nozzle 13 in the area A. As shown in FIG. As a result, washing water can be supplied from the washing/draining pump 8 to the rotating washing nozzle 12 and the non-rotating washing nozzle 13 with a short pipe and path length.

Therefore, the dishwasher 100 of the present invention can simplify the piping structure, and at the same time realize miniaturization, weight reduction and cost reduction due to its small volume. In addition, it is possible to improve the responsiveness of switching between the driving of the washing/draining pump 8 and the switching of water separation when the driving is stopped, which is advantageous in suppressing pressure loss, improving washing efficiency, and shortening washing time.

In addition, the rotation support portion 41, the valve box 133, and the outflow port 42 are arranged substantially on a straight line, and the outflow port 42 is located on the washing/drainage pump 8 side near the side wall 4d. A horizontal portion 13c passing through the rising portion 13b from the connecting end 13a of the non-rotating washing nozzle 13 is provided on the rear wall 4c, and has a spray port 44 through which washing water is sprayed.

In addition, as shown in FIG. 2 , the outflow paths 36 and 37 from the valve box 133 toward the rotation support portion 41 and the outflow path 38 toward the outflow port 42 extend in opposite directions from each other.

According to the above configuration, there are outflow paths 36 and 37 toward the rotating cleaning nozzle 12 and an outflow path 38 extending in the opposite direction like the non-rotating cleaning nozzle 13. Although there are a plurality of outflow paths, they can be switched by providing the water diversion device 14. Washing water flowing to the outflow paths 36, 37, 38.

In addition, the amount of the outflow port 42 close to the side of the washing/drainage pump 8 makes the arrangement area of the washing/drainage pump 8 , the water diversion device 14 , the rotating support 41 and the outflow port 42 smaller than the area A accordingly. Therefore, the connection distance between the valve box 133 and the washing/draining pump 8 is further shortened, in the case where the horizontal portion 13c of the non-rotating washing nozzle 13 is arranged at least on one wall along the washing/draining pump 8 of the surrounding walls 4b , the connection distance is also shortened. In addition, it is possible to deal with the arrangement when the horizontal portion 13c extends to two, three, or four walls of the peripheral wall 4b, and when branching from the rising portion 13b to both sides in the circumferential direction.

In addition, as shown in FIGS. 1 and 4 , the rotary support portion 41 is vertically connected to the connection port 12 a of the rotary cleaning nozzle 12 at a position above the bottom surface 4 a of the cleaning tank 4 . Accordingly, the rotary cleaning nozzle 12 is configured such that the connection port 12a thereof is located above the bottom surface 4a of the cleaning tank 4, and can be connected to the rotary support portion 41 from the vertical direction without any other hindrance.

Moreover, the connection end of the rising part 13b and the outflow port 42 are also vertically connected at the position above the bottom surface of the cleaning tank 4. As shown in FIG. Accordingly, the non-rotating cleaning nozzle 13 is also configured so that the connecting end 13a thereof can be connected to the outlet 42 from the vertical direction without other interference at a position above the bottom surface 4a of the cleaning tank 4 .

The rotary cleaning nozzle 12 is configured to switch its rotation direction between forward rotation and reverse rotation through the two outflow paths 36 and 37 selected by the water diversion device 14 according to the driving control of the cleaning/drainage pump 8 . Various specific methods can be considered for this purpose. The cleaning water spray energy from the spray port 44 of the rotary cleaning nozzle 12 can be used to rotate the rotary cleaning nozzle 12 by the reaction force of the spray. In this way, the rotary washing nozzle 12 can be rotated forward or backward, so that the spraying pattern of the washing water is greatly changed, and washing without dead space can be easily performed.

In addition, as shown in FIG. 3 , the valve box 133 has a connection port 133b extending toward the washing/drain pump 8 side. Furthermore, the valve box 133 is connected to the washing/drainage pump 8 located on the substantially opposite side to the rotation support part 41 below the bottom surface 4 a of the washing tank 4 . Correspondingly, as shown in FIG. 7 , a bulging portion 4j bulging upward is provided in an installation range of the washing/draining pump 8 along the rear wall 4c. In addition, by disposing the washing/draining pump 8 in the space 47 below the swelling portion 4j, it is possible to prevent an idle space from being generated around the washing tank 4 . Thereby, the enlargement of the dishwasher body 2 can also be suppressed.

Next, the valve body 32 of the water distribution device 14 will be described. 8A to 8D are explanatory diagrams showing disassembled valve body operating mechanisms of the dishwasher according to the embodiment of the present invention.

The valve body 32 rotates and moves between the inflow part 39 of the valve box 133 shown in FIG. As a result, the spool 32 switches the washing water flowing in from the inflow portion 39 to the outflow path for dividing the water. Specifically, the spool 32 is used to switch the discharge paths 33 , 34 , and 35 for discharging through the outflow paths 36 , 37 , and 38 shown in FIG. 4 .

Thus, as shown in FIG. 3 and FIG. 8A, four water-splitting openings 48b, 48c, 48d, 48e are formed on the connection port 48a of the water-splitting passage 48, and these water-splitting openings 48b, 48c, 48d, 48e surround the valve. The center of rotation 46 of the core 32 is divided into equal sizes by cross-shaped ribs 48f. In addition, as shown in FIGS. 8B and 8D , the valve body 32 has a water passage portion 32 a that cuts off a quarter of the range around the rotation center 46 . Here, the water diversion openings 48b to 48e divide water from the valve box 133 to the three outflow paths 36, 37, and 38 in the water diversion passage 48 respectively and time-divisionally.

In addition, as shown in FIG. 2 , the water diversion openings 48 b and 48 c communicate with the outflow path 36 , the water diversion opening 48 d communicates with the outflow path 37 , and the water diversion opening 48 e communicates with the outflow path 38 .

In addition, as shown in FIG. 3 , the spool 32 is formed into a disc shape, which can freely rotate around the guide shaft 60 provided at the bottom of the valve box 133, and can move up and down relative to the connection port 48a of the water distribution channel 48 in the up and down direction. Separation/contact. Furthermore, when the spool 32 abuts on the connection port 48a, any one of the water diversion openings 48b to 48e is opened by rotating around the guide shaft 60 .

The spool 32 operates in response to the level of the washing water pressure or the presence or absence of the washing water caused by the driving of the washing/drainage pump 8 or the stop of the driving, and is connected to a valve having a plurality of water diversion openings 48b to 48e at predetermined rotational positions. port 48a abuts. In this way, at the water-dividing position where all the water-dividing openings 48b-48e are closed except for a specific one of the water-dividing openings and the water-dividing opening is connected to the specific water-dividing opening through the water-through part, the water-dividing position is separated from the connecting port 48a and each water-dividing opening is separated from the connecting port 48a. The spool 32 moves up and down between the non-water separation positions where the openings 48b to 48e are all opened and the water separation is not performed. As the spool 32 reciprocates between the water diversion position and the non-water diversion position, the spool 32 changes its rotational position for closing the water diversion openings 48b-48e, thereby causing the upper cam pair 61 and the lower cam pair 62 to alternately operate.

Specifically, the lower cam pair 62 is composed of sawtooth cams 62a, 62b meshing with each other, and both of the cams 62a, 62b have guiding conditions to stabilize the spool 32 at every 1/4 rotation position. The upper cam pair 61 is composed of a mountain-shaped cam 61a and a cross-shaped cam 61b formed at the lower end of the rib 48f for partitioning the water diversion openings 48b to 48e.

When the spool 32 is pushed up by the cleaning water pressure from the stable non-water separation position through the lower cam pair 62, the inclined surface of the mountain-shaped cam 61a starts to abut against the halfway position of the cross-shaped cam 61b, so that the spool 32 rotates less than 1/ 4 Turn to reach the water diversion position and stabilize. Then, when the spool 32 drops from the water diversion position by releasing the cleaning pressure, the serrated cams 62a, 62b of the lower cam pair 62 mesh with each other at halfway positions of the respective teeth. The lower cam pair 62 has the function of making the spool 32 rotate from less than 1/4 turn of the above-mentioned cam pair 61 to the remaining part of 1/4 turn and stabilize. In addition, FIG. 8C shows the guide shaft 60 and the serrated cam 62b.

Thus, each time the valve core 32 moves up to the water diversion position, it rotates less than 1/4 turn from the stable rotation position before moving up. And, every time the spool 32 moves up to the water diversion position and then falls again, the mutual meshing position of the lower cam pair 62 will be changed to stabilize at the position of the next 1/4 turn.

As a result, each of the plurality of water diversion openings 48b to 48e is sequentially opened. That is, the following actions are repeated in sequence: from the water-dividing opening 48b through the outflow path 36 of the rotary cleaning nozzle 12 to the spray path 33 of the rotary cleaning nozzle 12; The spray path 33 of the rotating cleaning nozzle 12 divides water; the water is divided from the water dividing opening 48d through the outflow path 37 to the spray path 34; Divide water.

In this way, through the simple repetitive action of rotating and moving the spool 32, selective water division can be sequentially performed simultaneously or in time. Further, the forward and backward movement of the spool 32 is performed by the pressure of the washing water from the washing/drain pump 8 and the release of the pressure. In addition, the rotational movement of the spool 32 is performed by guiding the rotational direction by the upper cam pair 61 and the lower cam pair 62 having phases on the advancing side and the retracting side where the spool 32 advances and retreats.

In the case where the control device 31 performs the control including the driving stop of the washing/draining pump 8 as constant, the washing water from the draining/washing pump 8 passes through the water diversion openings 48b, 48c, and the supply rotation is repeated twice. The discharge path 36 of the nozzle 12 is cleaned. The time when the rotary cleaning nozzle 12 is rotated forward for cleaning is relative to the time when the cleaning water is supplied to the spray path 37 of the rotary cleaning nozzle 12 through the water separation opening 48d and the time for the rotary nozzle 12 to be reversed for cleaning and the cleaning water is supplied from the water separation opening 48d. 48e is supplied to the spray path 35 of the non-rotating cleaning nozzle 13 through the outflow path 38 for twice the cleaning time.

Fig. 9 is a perspective view showing a placed state of a dish basket and dishes used in the dishwasher according to the embodiment of the present invention. In order to make it easy for the washing water sprayed from the rotary washing nozzle 12 to reach the concave portion on the inner side of the tableware where food is placed, it is performed as follows. The cutlery basket 6 is designed to be bounded by a straight line 71 perpendicular to the rear wall 4c and the front wall 4f that passes through the center of rotation 11 and is opposite to each other in the surrounding walls 4b of the cleaning tank 4, and the cutlery is placed on the side of the cutlery 72. In the direction of symmetry opposite to each other on the inside. In addition, spraying conditions and the like are optimally designed so that when the rotary washing nozzle 12 rotates forward, the optimally arranged tableware 72 and the like can be fully washed.

That is, when the rotary cleaning nozzle 12 rotates forward for cleaning, sufficient cleaning can usually be performed, but problems such as shortened cleaning time, increased capacity of the object to be cleaned, and variation in the arrangement of the object to be cleaned need to be dealt with. Therefore, the normal rotation cleaning can be assisted by the reverse rotation cleaning, so that cleaning can be performed in a shorter time without missing a cleaning.

In addition, as shown in FIG. 9 , the cutlery basket 6 may sometimes be designed so that one side of the cutlery 72 arranged symmetrically so as to face each other inside is larger and the other side is smaller. The cutlery baskets 6 shown in Fig. 1 face each other front and back, and when the cutlery on the front side is larger and the cutlery on the rear side is smaller, a space is formed above the area where the smaller cutlery is placed, so it can also be installed in this space. Cutlery basket 7, thereby effectively using the cleaning tank 4.

However, sometimes it is difficult or wasteful to clean the area of the cutlery basket 7 within the reasonable cleaning range of the rotary cleaning nozzle 12 . Therefore, the cleaning of the area of the cutlery basket 7 can be performed mainly by the non-rotating cleaning nozzle 13 and assisted by the horizontal portion 13c.

By providing the injection port 44 in the range corresponding to the cutlery basket 7 of the rising part 13b, the auxiliary function of cleaning can be improved. Therefore, it is preferable that the horizontal part 13c is extended also to the side wall 4e opposite to the side wall 4d provided with the rising part 13b, and it is further conceivable to extend toward the front wall 4f. From the perspective of the auxiliary function of this kind of cleaning, the horizontal part 13c is preferably provided on the entire circumference of the surrounding wall 4b, and may be different from the extended area of the horizontal part 13c, and branched from the rising part 13b to both sides of the circumference. In this case, if the height and extension path of the horizontal portion 13c branched to both sides are different, it is easy to cope with the different cleaning loads at each position in the height direction and the plane direction in the wide cleaning area in the cleaning tank 4. difference.

Here, it is also conceivable to add another one on the basis of the spray path 35 of one non-rotating cleaning nozzle 13, so as to add a total of four additional parts to the spray paths 33, 34, 35 through the four water diversion openings 48b-48e. Jet path for water separation. In this case, under the driving control of the cleaning/drainage pump 8, the water dividing time for the spray path 33 of the rotary cleaning nozzle 12 will be different from that of the spray path 34 of the rotary cleaning nozzle 12 and the non-rotating direction. The spray path 35 of the cleaning nozzle 13 and the water diversion time to the extended spray path are the same.

However, according to the driving control of the cleaning/drainage pump 8, the rotation direction of the rotary cleaning nozzle 12 can be rotated in the normal direction by utilizing the difference in the spray paths 33, 34 of the rotary cleaning nozzle 12 selectively supplied from the water diversion device 14. Switch between and reverse. At this time, the control device 31 can freely control the driving of the washing/draining pump 8 so that the normal rotation time and the reverse rotation time become a predetermined ratio. Therefore, it is only necessary for the control device 31 to be able to control the ratio of the forward rotation time and the reverse rotation time of the rotary washing nozzle 12 according to the respective driving time ratios of the washing/drainage pump 8 during the forward rotation and the reverse rotation. In the case that the cleaning effect does not change during forward rotation and reverse rotation, the forward rotation time and reverse rotation time can also be set to be equal.

Of course, the ratio of the water-dividing time including the spray paths 36, 37, 38 and the added spray paths and the water-dividing openings 48b-48e corresponding to them and the water-dividing parts can be controlled according to the control device 31. The ratio of the driving time of the washing/drainage pump 8 can be freely set and controlled.

When controlling the ratio of the forward rotation time and the reverse rotation time of the rotary cleaning nozzle 12 , a rotation direction detection device may also be arranged on the rotary cleaning nozzle 12 . Therefore, the control device 31 can control based on the output of the rotation direction monitoring device when the rotary cleaning nozzle rotates forward and reverse, so that the forward rotation time and the reverse rotation time become a predetermined ratio.

In addition, a flow detection device for detecting the flow of washing water supplied to the two spray paths 33 and 34 may be provided. The control device 31 can control the forward rotation time and the reverse rotation time to a predetermined ratio based on the output of the flow detection device when the rotary washing nozzle 12 rotates forward and reverse.

Further, the following control can also be realized by providing the spool 32 with a spool position detection device that detects the supply switching position for supplying washing water to the two spray paths 33 , 34 via the two outflow paths 36 , 37 . That is, the control device 31 can also control based on the output of the spool position detection device when the rotary cleaning nozzle 12 rotates forward and reverse, so that the forward rotation time and the reverse rotation time become a predetermined ratio.

In addition, as shown in FIG. 4 , the rotation support portion 41 has a bending height region H for bending. The outflow paths 36 and 37 of the water-dividing passage 48 have: from the valve box 133 to extend laterally along the bottom surface 4a of the cleaning tank 4, that is, the extending path range B; and from the extending path range B toward the rotary cleaning nozzle 12 The direction of the rotation center 11 bends upwards, that is, the curved path range C. In addition, at least the outer corner C1 side of the curved path range C has a curved shape, for example, a smooth curved shape without a sharp change in the radius of curvature. In addition, the extended path is connected to the curved path.

As a result, the washing water in the outflow paths 36 and 37 of the water diversion path 48 passes through the curved path range C from the protruding path range B. Then, the washing water is smoothly guided to the outflow ports 36a, 37a forming an inner and outer double passage structure concentric with the rotation center 11 of the vertically upward facing rotation support portion 41 . Also, the washing water is also vertical, and flows directly above without colliding with, deflecting, or disturbing the introduction ports 12b and 12c forming the inner and outer double-layer passage structures concentric with the rotation center 11 .

As a result, the washing water is evenly introduced into the discharge paths 33, 34 around the rotation center 11 through the introduction communication ports 12d, 12e, thereby further improving the rotation balance and stability of the rotary washing nozzle 12.

For example, in the case where the cross-sectional shape of the water separation passage 48 is substantially circular, the radius of curvature of the inner surface of the curved path range C is formed to be approximately 1/2 or more of the inner diameter of the water separation passage 48, so that the occurrence of turbulence can be suppressed. Flow, can reduce pressure loss, etc., so it is preferable. For example, if the inner diameter of the water diversion channel 48 is set to 20 mm, then the radius of curvature of the curved path range C is preferably greater than 10 mm.

In addition, if the inner surface of the inner corner of the curved path range C has corners, turbulent flow or cavitation is likely to occur on the downstream side, so the radius of curvature should be sufficiently smaller than that on the outer corner side, but it is preferably provided as a curved surface in the axial direction. .

Therefore, in the embodiment of the present invention, the lateral extension path range B has a portion B1 that slopes downward from the connection height position H0 that is the connection position with the valve box 133 toward the rotation support portion 41 side. By means of the downwardly sloping portion B1, it is ensured that the bending height region H is independent of the height region H1 where the valve box 133 is set. Therefore, the volume increase due to the wall of the cleaning tank 4 along which the curved path follows can be further suppressed. In the embodiment of the present invention, the height of the rotary washing nozzle 12 provided at the bottom of the washing tank 4 can be kept low by providing a curved path, and as a result, a large space for placing dishes 72 and the like can be ensured.

However, since washing water remains in a portion lower than the connection height position H0, it is preferable to timely drain the water together with the drainage of the valve box 133 .

In addition, by making the protruding path range B protrude or incline upward at a height above the horizontal direction shown by the two-dot chain line in FIG. Above the height position H0. Therefore, irrespective of the height and shape of the top wall 48h, it is possible to prevent washing water from flowing into the valve box 133 and remaining in the middle, and it is possible to perform drain water treatment at the valve box 133 itself.

Of course, in order to arrange a plurality of cleaning nozzles to improve the cleaning effect, as a preferred form, at least one of them is used as the rotating cleaning nozzle 12 and arranged in the center of the bottom surface 4a. However, it is not limited to this, and at least one cleaning nozzle can be used as a non-rotating cleaning nozzle 13 with a rising portion 13b and a horizontal portion 13c, and selectively make it work with other one or more cleaning nozzles, thereby improving the cleaning effect .

In this case, as shown in FIG. 7 , the rising portion 13 b is formed such that the connection end 13 a at one end rises to a position higher than the washing/draining pump 8 at a position away from the washing/draining pump 8 . Moreover, the horizontal part 13c is connected to one end of the rising part 13b, passes through or is located above the washing/drainage pump 8, and is provided on at least one of the surrounding walls 4b.

As a result, after the water is supplied to the washing tank 4 of the dishwasher body 2, when the motor for driving the washing/draining pump 8 is rotated forward, the washing/draining pump 8 sucks the washing water in the washing tank 4 and pressurizes it, and supplies Water device 14 sends out. The water diversion device 14 diverts water to one or more spray paths 33 , 34 , 35 simultaneously or time-divisionally. Here, at least one of the washing nozzles is the non-rotating washing nozzle 13 , and the others are the rotating washing nozzles 12 .

In addition, a plurality of cleaning nozzles including at least one non-rotating cleaning nozzle 12 and one or more spray paths 33 , 34 , and 35 included in these cleaning nozzles can be selectively used for cleaning. The washing water is sprayed into the washing tank 4 in a plurality of patterns from a plurality of nozzle positions, so that the objects to be washed, such as dishes 72 placed on the dish baskets 6 and 7 , can be washed.

The non-rotating cleaning nozzle 13 makes the cleaning water on the bottom surface 4 a of the cleaning tank 4 pass through the rising portion 13 b and is supplied to the horizontal portion 13 c for spraying by means of water separating by the water separating device 14 . The horizontal portion 13c is provided on at least one of the peripheral walls 4b of the cleaning tank 4, and passes through or is located above the cleaning/drainage pump 8 provided along the wall. Thus, the length of the water supply path from the washer/drain pump 8 via the water diversion device 14 including the ascending portion 13c away from the washer/drain pump 8 is shorter than a detour that does not interfere with the washer/drain pump 8 .

In addition, the horizontal portion 13c is positioned at a desired predetermined height of the cleaning tank 4 by the rising portion 13b, so that it can work in a complementary manner with other cleaning nozzles.

In addition, as shown by the two-dot chain line in FIG. 7, the ascending part 13b and the horizontal part 13c may be comprised by several discharge paths 35 and 35a. The plurality of discharge paths 35 , 35 a of the ascending portion 13 b can be integrally formed at the connection end 13 a, and can be connected to or separated from the plurality of outlets 42 , 42 a provided in the water diversion passage 48 at the same time.

As a result, the non-rotating washing nozzle 13 has a plurality of spray paths 35, 35a, and the spraying area of the washing water can be enlarged to improve the washing effect. Furthermore, the connection between the non-rotating cleaning nozzle 13 and the water diversion device 14 can be simultaneously connected or disconnected with respect to the plurality of outlets 42 , 42 a in the water diversion passage 48 .

Next, other structures of the water separating device and the cleaning tank will be described. 10 is a perspective cross-sectional view showing another structure of a water diversion device and a washing tank used in the dishwasher according to the embodiment of the present invention.

The water diversion channel 48 is embedded in the bottom 49a, and the valve box 133 is integrally formed with the bottom surface 4a of the cleaning tank 4 so as to be connected to the opening 133a. Other structures are unchanged from the water diversion device 14 formed by the water diversion device 48, the valve box 133, and the valve core 32 of the previous example, so the common components and parts are marked with the same symbols and descriptions are omitted.

As a result, since the valve box 133 is formed integrally with the bottom surface 4a of the washing tank 4, the number of parts and assembly man-hours can be reduced, and the cost can be further reduced.

Claims (5)

1, a kind of dish cleaning machine is characterized in that, this dish cleaning machine comprises: the dish cleaning machine body that forwardly has peristome; Be set to freely to pull out and to have up with respect to above-mentioned dish cleaning machine body the rinse bath of opening; Be contained in the said washing groove and mounting is cleaned the tableware basket of thing; To being used to clean the scavenging pump that the above-mentioned rinse water that is cleaned thing is pressurizeed; The division box that the above-mentioned rinse water that will be pressurizeed by above-mentioned scavenging pump is optionally supplied with to a plurality of ejections path; And a plurality of washer jets, these washer jets have a plurality of above-mentioned ejections path, and the above-mentioned thing that is cleaned is sprayed above-mentioned rinse water,

Above-mentioned division box comprises: clack box, and this clack box is communicated with above-mentioned scavenging pump, and has the inflow portion that flows into for above-mentioned rinse water; Divide water passage, this minute water passage have a plurality of outflows road that is connected and is communicated to respectively a plurality of above-mentioned ejections path with above-mentioned clack box; And spool, this spool is arranged in the above-mentioned clack box, and the above-mentioned rinse water that will flow into optionally divides water to a plurality of above-mentioned outflows road, in the above-mentioned minute integrally formed a plurality of above-mentioned outflows of water passage road at least one, and above-mentioned minute water passage removed in the said washing groove just can be for the above-mentioned spool of mounting or dismounting in the said washing groove.

2, dish cleaning machine according to claim 1 is characterized in that,

Above-mentioned spool moves by rotation between a plurality of above-mentioned outflow road of the above-mentioned inflow portion of above-mentioned clack box and above-mentioned minute water passage, switches to be used to make the above-mentioned rinse water that flows into from above-mentioned inflow portion to carry out the above-mentioned outflow road of branch water.

3, according to each described dish cleaning machine in claim 1 or 2, it is characterized in that,

Said washing groove has recess in the bottom surface, and water passage embedded the above-mentioned recess from the top in above-mentioned minute, and in the bottom of above-mentioned recess above-mentioned clack box was set.

4, dish cleaning machine according to claim 1 is characterized in that,

The bottom surface of the upper surface of above-mentioned minute water passage and the said washing groove of adjacency has equal height.

5, dish cleaning machine according to claim 1 is characterized in that,

The bottom surface of above-mentioned clack box and said washing groove is integrally formed.

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