TWI290033B - Dishwasher - Google Patents

Abstract

The dishwasher in accordance with the present invention comprises a switch valve arranged in a water passage connecting between a washing pump and a plurality of washing nozzles, and is characterized in that the switch valve comprises a waterway section and a lock-out member. The waterway section connects an inlet port for water pressurized by the washing pump and an outlet port. The lock-out member takes reciprocal movement within the waterway section. In addition, the dishwasher comprises impact-buffering means for buffering impact between the lock-out member and the output port. With such an arrangement, the dishwasher in accordance with the present invention realizes a switch valve that can be constructed with a simple structure with reduced switching noise and allows water to be selectively ejected from a plurality of washing nozzles with one single washing pump whereby low noise and saving of water can be realized without increasing costs or enlarging the overall size of the dishwasher.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for cleaning dishes by spraying water from a plurality of cleaning nozzles to wash the water pressurized by the pump 5. Background of the Invention The conventional dishwashers will be described below using Figs. 13 and 14. 10 Water supply path 1 supplies water to the dishwasher body 2, and the water supply valve controls the water supply. The dishwasher body 2 has a washing tank 4 and a water level sensor 6, which has a water storage portion 5 for supplying water, and the water level sensor 6 communicates with the water storage portion 5. The water stored in the water storage unit 5 is heated by the warm water heater 7, and is pressurized by the cleaning pump 8, and then sprayed to the dishes disposed in the cutlery basket 10 by a plurality of cleaning nozzles 9 to wash the dishes. . The drain pump 11 can discharge the water in the washing tank 4. The dishwasher body 2 has a front door 12 which can be taken out and placed in the cutlery basket 10. The leftover filter 13 is used to capture the leftovers attached to the dishes. 20 Next, the operation of the conventional dishwasher described above will be described. The tableware is placed in the dish basket 10 and stored in the washing tank 4 to start the operation, the water supply valve 3 is opened, and the water supply path 1 is supplied to the washing tank 4. The water supply to the water storage unit 5 is started, and after the water level sensor 6 detects that the predetermined water level is reached, the water supply is completed by closing the water supply valve 3. Then, the washing pump 8 is driven. 1290033 The water stored in the water storage portion 5 is heated by the warm water heater 7 and pressurized by the washing pump 8, and then sprayed by the washing pump 9 to the dishes in the cutlery basket 1 to clean the dishes. After the cleaning is completed, the drain pump 1 丨 discharges the water in the washing tank 4. However, in the conventional dishwasher, since a large number of washing nozzles 9 simultaneously spray water, the sound is large, and the washing tank is afraid of a large amount of water. On the other hand, in order to reduce the noise during operation and to save water, JP-A-5-176875 discloses that the basic configuration is the same as that of the above-described conventional example, and that the cleaning factor corresponds to the number of cleaning nozzles, and is selected by H). Sex (four) water jet dishwasher. ^ The above-mentioned first month, the example of technology, although it can reduce noise and save water, but because it has to install a large number of cleaning pumps, so the number of parts and the time of the maintenance of the force in addition to the problem of increased costs, as well as machine full The problem. Main 15 [Mingyin] Summary of the invention The water channel of the mouth is connected to the cleaning wire by the cleaning wire. The characteristic is that the cutting (4) includes: water that can pressurize the cleaning pump; _ mouth, connecting the inlet and To the above-mentioned many cleaning nozzles; the water-passing part 'for movement; and the tableware &_ and county components, shot in the waterway to reciprocate and mitigate the impact U to ease the collision between the blocking member and the out-of-the-way The machine can realize a switching valve with a small switching operation sound by using a simple configuration. In addition, since a cleaning pump can selectively spray water from a plurality of cleaning nozzles, the cost does not increase and the entire apparatus does not become large. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a switching valve of a dishwasher according to an embodiment of the present invention. FIG. 2 is a front view of a dishwasher according to an embodiment of the present invention. Fig. 3 is a side cross-sectional view of a dishwasher according to an embodiment of the present invention. Fig. 4A is a side view of an occluding member used in an embodiment of the present invention. The upper perspective view of the occluding member used in one embodiment of the present invention. Fig. 4C is a bottom perspective view of the occluding member used in an embodiment of the present invention. Fig. 5A is a cross-sectional view taken along line A-A of Fig. 1. The figure is a cross-sectional view taken along line B-B of Fig. 1. Fig. 5C is a cross-sectional view taken along line C-C of Fig. 1. Fig. 5D is a cross-sectional view taken along line D-D of Fig. 1. Fig. 6 is a view Fig. 7 is a perspective view showing a sliding surface of a cam mechanism constituting an embodiment of the present invention. Fig. 8 is a perspective view showing another embodiment of the present invention. Fig. 9 is a front cross-sectional view of a dishwasher according to another embodiment of the present invention. Fig. 10A is a side view of an occluding member according to another embodiment of the present invention. The upper perspective view of the occluding member of the other embodiment. Fig. 10C is a bottom perspective view of the occluding member of another embodiment of the present invention. Fig. 11 is a cross-sectional view of the switching valve of another embodiment of the present invention. Figure 12 is another embodiment of the present invention Fig. 13 is a front cross-sectional view of a conventional dishwasher. Fig. 14 is a side cross-sectional view of a conventional dishwasher. [Embodiment 3 15 Detailed Description of Preferred Embodiments In the drawings, the same components as those in the prior art are denoted by the same reference numerals, and the description thereof will be omitted. As shown in Figs. 2 and 3, the inside of the cleaning tank 4 is viewed from the front. 20, a cleaning nozzle 14 is provided on the left side, a cleaning nozzle 15 is provided on the right side, and a cleaning nozzle 16 is provided on the back side. A switching valve 17 is provided between the cleaning nozzles 14 to 16 and the cleaning pump 8, and the switching valve 17 can be The water pressurized by the washing pump 8 is sequentially switched to pass water to any one or two of the washing nozzles 14 to 16. Next, the switching valve 17 will be described using Figs. 1 to 7 . 1290033 The water-passing portion 18 connects the inlet 19 and the outlets 20a to 20d, and the inlet 19 introduces water pressurized by the beta washing pump 8, and the outlets 2〇a~2〇ci direct the introduced water to the washing nozzle 14 respectively. ~16. Further, the outlets 2〇a to 2〇d are collectively referred to as the outlet 20. A closing member is provided inside the water passing portion 18, and the blocking member 22 reciprocates between the inlet 19 and the outlet 20, and the outlets 2a to 20d are sequentially plugged while intermittently rotating. The occluding member 21 has cam mechanisms 22, 23' and the cam mechanisms 22, 23 are rotatable in conjunction with reciprocating motion to rotate in a direction by a predetermined angle. Next, the occluding member 21 will be described using Figs. 4A to 4C. The closed plug member 21 has a disk 26, and the upper surface of the disk 26 is a flat portion 26a, and a notch 24 is formed in one portion of the disk. The cam mechanism 22 includes sliding surfaces 27a, 27b. Further, the sliding surfaces 27 & 27b provided on the upper surface of the closing member 21 have inclined surfaces, and are formed successively on the same circumference centered on the approximate center of the disk 26 as the central axis 31. . In addition, the cam mechanism 23 includes a sliding surface 28. The lower sliding surface 28 forming the 15 disk 26 has an inclined surface and is successively formed on the same circumference centered on the approximate center of the disk 26. The guide holes 29 are disposed substantially in the center of the disk 26. Fig. 5 is a view showing a state in which the position of each indicator line is cut off for the switching valve of the second figure. Figure 5A is the first! Figure A_A line cross-sectional view, Figure 5B is the B-B line cross-section of Figure 20, Figure 5C is the C-C line cross-section of Figure 1, and Figure 5D is the first picture Line section view. Here, the cross section of the A_A line is viewed from the lower side of the first drawing, and the cross section of the line B_B is a view of the cross section viewed from the upper side of Fig. 1 . Similarly, the c-c line cross-section is a view of the cross-sectional portion viewed from the upper side of the first drawing, and the d-d 1290033 line cross-section is a view of the cross-sectional portion viewed from the lower side of the first drawing. As shown in Fig. 5A, the outlet for discharging water to the cleaning nozzle is constituted by four outlets 20a to 2Gd. The mouth is directed to discharge the water toward the cleaning nozzle 14 on the left side, and the port 2_ is directed to the cleaning nozzle 15 on the right side: the outlet 20d is directed to discharge the water toward the cleaning nozzle 16 on the back side, and the outlet water is directed toward the cleaning nozzle 14, 15 both are exported. μ ’ 10 15 20

The outlets 20a to 20d share a flat opening surface 3A and are opposed to the flat portion 26a. The inner diameter m of the opening (4) is set to be smaller than the outer diameter 2 of the flat portion 26a. The closing member 21 reciprocates in the vertical direction between the inlet 19 and the outlet 2, and the flat portion is in contact with the opening surface H in a watertight manner at the end of the upward facing path so that water does not leak from the gap. Therefore, among the outlets 20a to 2〇d, only the outlet of the notch 24 of the blocking member 21 can be an outlet for discharging water toward the cleaning nozzle, and the remaining of the outlets 20a to 20d Three were blocked.

Fig. 6 is a view showing an example in which the flat portion 26a of the closing member 21 abuts on the opening surface %. In the sixth aspect, the direction of the water flow is indicated by an arrow symbol w, and the direction of rotation of the blocking member 21 is indicated by an arrow symbol R. In the example of Fig. 6, the outlets 20c, 20d are plugged, and only the outlet 20b serves as an outlet to form an opening. At this time & water, as previously described, will be directed toward both wash nozzles 14, 15. ,

Here, in Fig. 1, the movement toward the upper side of the closing member 21 is referred to as a forward path, and the downward movement is referred to as a return path. In the terminal of the forward path, the flat portion 26a of the S member 21 abuts against the opening surface 30, and the s7 and 10,000 sides are at the end of the reversing, and the flat portion 26a is aligned with the opening surface by a predetermined gap. Each movement is performed once, and a reciprocating motion is formed. During this period, the -12 1290033 wheel mechanisms 22 and 23 and the closing member 21 are set so as to be centered on the central axis 31 of the guide hole 29, and within the outlets 20a to 20d, only Rotate the angle formed by the two adjacent exits. Thus, in the example of Fig. 6, the blocking member 21 is rotated by 9 degrees. Next, the occluding member 21 is moved downward by the state of Fig. 6 toward the terminal end of the re-route, and then when the occluding member 21 is again raised toward the terminal of the forward path, the occluding member 21 rotates only the angle formed by the outlet 20b and the outlet 2〇c ( 90 degrees). As a result, the outlets 20a, 20b, 20d are plugged by the closing member 21, and only the outlet 2〇c serves as an outlet to form an opening, and the water is formed to be discharged toward the washing nozzle 15 on the right side. Further, the reciprocating motion of the occluding member 21 mainly utilizes the hydraulic force of the water pressurized by the washing pump 8 and the gravity acting on the occluding member 21 itself. Gravity often acts on the closed base member 21, but since the hydraulic force generated by the washing pump 8 can be made much larger than the gravity acting on the closing member 21, the occluding member 21 can almost ignore the effect of gravity when subjected to hydraulic force. Thereby, the operation and the stop of the washing pump 8 are performed by the interaction, and the occluding member 21 can reciprocate. When the washing pump 8 is repeatedly operated and stopped alternately, the closing member 21 reciprocates between the inlet 19 and the outlet 20, and rotates by a predetermined angle around the central axis of the pilot hole 29. As a result, the outlets 2〇a to 2〇d are simultaneously plugged in order, and one outlet in the outlets 20a to 20d is sequentially opened. For example, when the direction of rotation R of the occluding member 21 is in the direction of the rotation of the sacred needle as shown in Fig. 6, the outlet is opened by the Chuanji order of 1. 20a, 2.20b, 3. 20c, 4. 20d, and then back. To 20a. Accordingly, the water is discharged in the order of the cleaning nozzles 14 2, the cleaning nozzles 14 and 15, the cleaning nozzles 15, and the cleaning nozzles, and returns to the cleaning nozzles. Further, in the first embodiment, the port 2 is connected to both of the cleaning nozzles 14 and 15 by 2%. However, of course, the communication between each port 1290033 and each cleaning nozzle can be arbitrarily set. Next, the cam mechanism 22 will be described. The cam mechanism 22 is composed of a sliding surface 27a*27b of the closing member 21 and a rib 32. That is, the sliding faces 27a, 27b of the blocking member 21 are in sliding contact with the ribs 32 constituting one of the opening faces 3a to 20d to constitute the cam mechanism 22, and the reciprocating motion of the blocking member 21 is performed. Transform into a rotating position. The ribs are radially extended at substantially equal intervals by the approximate center of the opening face 30. In the first embodiment, the blocking member 21 is disposed so that the position of the sliding surface 27a and the rib 10 portion 32 can be overlapped when viewed from above in the lowered position, that is, the end of the re-route, and if the blocking member 21 is received When the hydraulic force of the water pressed by the cleaning fruit (10) rises, the sliding surface 27a abuts against the rib 32. Since the sliding surface 27a is again subjected to the upward hydraulic force after abutting against the rib 32, the rib portion 32 is slid by the inclined surface of the sliding surface 27a, and the closing member 21 is raised while rotating. When the rib 32 slides and slides the movable surface 2%, the rib 32 abuts against the flat portion 26a of the occluding member 21, and the upper jaw of the occluding member 21 and the square slewing movement are simultaneously stopped. At this time, most of the ribs μ are all abutted against the flat portion 26a with a gap, and the outlet plugged by the disc % of the blocking member 21 is watertight. Further, when the sliding surface 27b and the rib 32 are set to be in sliding contact, the rotation direction of the closing member 21 can be reversed. 2, the cam mechanism 23 will be described. The cam mechanism 23 is constituted by the sliding surface 28 of the closing member 21 and the sliding surface 33. Fig. 7 is a perspective view showing the sliding surface 33 which is formed in pair with the sliding surface 28 of the closing member 2i and which constitutes the cam mechanism η. The sliding surface 33 has an inclined surface, and most of the inclined surfaces are formed in succession on the same circumference as the central shaft 3! Further, a shaft 34 that is coupled to the guide hole 29 of the closing member 12 1290033 member 21 is provided at the center of the sliding surface (10). The cam mechanism 23 performs the same operation as the cam mechanism 22, and the sliding surface 28 of the closing member 21 is in sliding contact with the sliding surface % to convert the linear motion into a rotational motion. That is, the position of the sliding surface 28 and the sliding surface 33 is made heavy when the blocking member U is raised, that is, when the direction of the occlusion member U is changed to the lower surface. When the hydraulic force is not received when the cleaning pump 8 is stopped, the blocking member 21 is lowered by gravity, and since the blocking member 21 abuts against the force in the downward direction, the sliding surface 28 is slid on the sliding surface 33, and is occluded. The member 21 is lowered while the surface is rotated. When the face 28 slides over the sliding surface 33, the lowering and the rotating movement of the blocking member 21 are simultaneously stopped. At this time, the flat portion 2 of the occluding member 21 is maintained at a predetermined interval and is stationary as the opening surface 3 。. Further, the next time, when the occluding member 2 is again subjected to the hydraulic force, the notch 24 of the occluding member 21 is moved and the outlets 20a to 20d of the secondary opening are aligned with the other outlet. For example, an exit of 2% and 15 times would coincide with the adjacent exit 20b. ,Do not

When the washing pump 8 pressurizes the water and the blocking member 21 moves over the upper jaw by the hydraulic force, the closing member 21 collides with the opening surface 30. If the collision is too ‘, a large impact sound is generated. For example, when the cleaning pump 8 is started up, if a single gas is supplied to the inlet 19 as a nominal value, the closing member 21 starts to rise and move toward the opening surface. As a result, the occluding member 21 finally collides with the opening surface to generate a collision sound. Could have

Since the rise of the occluding member 21 is performed by the hydraulic force, the hydraulic force is reduced, and the squeezing of the occluding member 21 and the opening surface 3 浐 13 1390033 can be alleviated to reduce the collision sound. The dishwasher of the first embodiment has the pump control device 4 of Fig. 2. The pump control device 40 has a microcomputer and a two-way thyristor (switching device) controlled by the output of the microcomputer, and can control the output of the cleaning pump 8 (discharge energy). For example, at the time of starting, the two-side thyristor is turned ON and OFF with a small scale to energize the motor (not shown) that drives the cleaning pump 8, and then continuously energized. Specifically, 0.2 seconds ON and 0.4 seconds OFF are repeated several times and then continuously energized. By such output control, the collision sound generated by the blocking member 21 colliding with the outlet 21 can be alleviated. When the occluding member 21 comes to the lowered position, that is, at the end of the reversing path, by turning the pump output ON, the occluding member 21 starts to rise. Here, the pump output at the initial stage of the rise is reduced, and then the control is made to increase the output, and the hydraulic force is gradually applied to the closing member 21, and slowly starts to rise toward the opening surface 3〇. Therefore, the occluding member 21 abuts against the opening face 3 of the outlet 20 without colliding, and the collision noise can be reduced. The pump control device 40 controls the small scales 〇N, 〇FF to energize the cleaning pump 8. Therefore, the ON time and the 0FF time of the cleaning pump 8 can be appropriately set in accordance with the shape and weight of the closing member 21, the distance of the reciprocating movement of the closing member 21, the discharge capacity of the washing pump 8, and the like, so that various conditions are satisfied. The lower 20 can also suppress the collision sound as much as possible, and can realize the switching valve with high reliability of the switching operation. Further, the motor of the cleaning pump 8 can control the switching valve having a small switching operation sound with extremely simple control regardless of the type of motor used. The receivers are aware of the actions of the entire configuration. Place the tableware 1290033 in the cutlery blue ίο and store it in the washing tank 4. After starting the operation, open the shovel wide 3' and supply water to the grooving tank 4 through the tree diameter 1. The water supply is cut and the water storage portion 5' in the tank 4 is detected by the water level sensor 6 to reach a predetermined water level, and the water supply valve 3 is closed to terminate the water supply, and the washing pump 8 is driven. - 5, the water stored in the water storage portion 5 is pressurized by the washing pump 8, and the valve 17 is cut by the cleaning nozzles 14 to I6 to the tableware basket, and the sprayed water is returned to the water storage portion 5, After a series of cycles. At this time, the cleaning pump is operated intermittently. For example, after (5) less operation, the repetitive operation of 5 seconds is stopped. The operation of the cleaning pump 10 is intermittently performed. The closing member 21 constituting the switching valve 17 intermittently adjusts the downward force of the force of the hydraulic force and the downward force by the gravity, and performs the ascending and descending, that is, reciprocating. motion. The reciprocating motion is converted into a rotational motion by the cam mechanisms 22, 23 constituting the switching valve 17, and the blocking member 21 is rotated by only a predetermined angle 15 at each reciprocation, and the water sent from the washing pump 8 is sequentially led to the outlet. Add ~ 20d. Thereby, water is sequentially sprayed by the washing nozzles 14 to 16. For example, in order to perform a cleaning operation for a total of 30 minutes, the so-called repeated operation of the operation of 5 seconds is stopped after the cleaning fruit 8 is operated for _ 25 seconds. At this setting, the switching valve 17 performs 60 switching operations. Since the number of the outlets 2 of the switching valve 17 is increased by two, such as 20, the total number of switching ports is set to a multiple of four as described above, so that water can be uniformly sprayed. The whole tableware arranged in the cutlery basket 10. The water used for cleaning is circulated by the washing pump 8 and heated by the warm water heater 7. The cleaned water is discharged from the washing tank 4 by the drain pump 11, and the cleaning process is completed 12 1290033. As described above, the dishwasher of the present embodiment has the switching valve 17 in the middle of the water passage connecting the cleaning pump 8 and the plurality of cleaning nozzles 14 to 16. The switching valve 17 introduces water pressurized by the washing pump 8 from the inlet 19, and the introduced water is led to the plurality of washing nozzles 14 to I6 by a plurality of outlets 5 2a to 2d. The switching valve 17 has an occluding member 21 that reciprocates between the inlet 19 and the outlets 20a to 20d. The blocking member 21 intermittently rotates in the water passage 18 to sequentially plug the outlets 20a to 2〇d. The switching valve 17 is further connected to the blocking member. The reciprocating motion and the cam member 22 10 , 23 that rotates the blocking member 21 in the - direction by a predetermined angle. The dishwasher of the present embodiment further has a control device 4G for controlling the output of the cleaning pump 8, which can slow down the plug member when p2()a~2〇d is plugged 15 20

The impact of the production. In this way, it is possible to easily configure the switching valve 17 in which the actual operation sound is small. In addition, in the state of the cleaning pump (4), it is not necessary to use another driving source. The water can be sequentially sprayed by the cleaning nozzles 14 to 16 in a simple configuration, which increases the cost and the machine itself. It doesn't have to be too big to complete. Further, the cut_17 itself does not require a special drive source, and since the wash pump 8 is only intermittently operated, low cost can be achieved, and high reliability and durability can be obtained. During operation, the sound from the cleaning nozzle 14 to the water _ cleaning tank 4 is the biggest cause of noise. Thus, the amount of water that is simultaneously ejected is less static. In the present embodiment, 'not all of the cleaning nozzles are simultaneously ejected, but each of the recordings is shot, and the amount of water ejected at the same time is small, so that low noise can be achieved. 16 l29〇〇33 In addition, since the amount of circulating water can reduce the amount of water stored in the water, it can save water. In the dishwasher of the present embodiment, since the water is sprayed from each of the washing nozzles in sequence, the water can be saved by reducing the water of the circulating water, as compared with the dishwasher which is sprayed with water by all the washing pumps. Further, according to the present embodiment, the amount of water to be circulated can be reduced, the water supply capacity of the washing pump 8 can be reduced, and the cost of the cleaning pump 8 can be reduced and the cleaning pump 8 can be downsized. The entire machine can be miniaturized.

In addition, the pump control device 4A has a switching device, and the small pump is turned ON and OFF to energize the cleaning pump 8. That is, it can be set to make the pump output small when the pump 8 is started, and then gradually increase. Thereby, it is possible to easily control the switching valve that realizes a small switching operation sound, and it is possible to easily control the switching valve 17 that realizes a small switching operation sound regardless of the mode of driving the cleaning pump 8. Further, in the present embodiment, the pump control device 4 is configured to make the pump output small when the cleaning pump 8 is started, and then gradually increase, but the outlet member 21 can also be plugged at the outlet 2〇a~2〇d. In the previous period, the cleaning pump 8 is caused to perform the following output. At this time, since the hydraulic force applied to the closing member 21 is weak, the rising speed of the blocking member 21 can be reduced. Thereby, the closing member 21 does not collide with the opening surface 3, and the collision sound can be reduced.

Further, the pump control unit 40 may reduce the pump output during the movement of the blocking member 21 from the inlet 19 toward the outlet 20 after the cleaning pump 8 is activated. At this time, when the blocking member 21 is at the lowered position, that is, the end of the return path, the cleaning pump 8 is activated at a time to raise the blocking member. Next, before the closing member 21 abuts against the opening surface 30, the closing of the plug member 21 is controlled such that the pump output is reduced or temporarily stopped to weaken the hydraulic force, and the speed at which the blocking member 21 abuts against the opening surface 30 is reduced. As a result, the impact can be alleviated and the impact sound can be reduced. At this time, since only the speed immediately before the closing member 21 abuts against the opening surface 3〇 is reduced, the time required for the reciprocating movement of the closing member 21 can be shortened, and the switching valve 17 having a smaller switching operation sound can be easily controlled. Further, the pump control device 40 may be controlled such that after the cleaning pump 8 is started, the pump output is immediately reduced after the closing member 21 starts moving toward the opening surface 3 from the inlet 19. That is, when it is located at the end of the re-route, it is mainly used for the occluding member 21 only by gravity. Even if the washing pump 8 is started, the generated hydraulic power is not immediately larger than the gravity. Although the occluding member 21 starts to rise when the hydraulic power starts to be larger than the gravity, even if the pump output is decreased immediately after the start of the rise, or the pump is stopped, the inertial force acts on the occluding member 21, and the ascending speed is lowered while continuing to rise. Therefore, in the low speed state, if the surface is abutted against the opening surface 30 15 , the impact is of course moderated, and the collision sound is also reduced. Further, the speed of the occluding member 21 continues to rise and abut against the outlet 20 in a state where the damper member 21 is lowered, and only the force for smoothly operating the cam mechanism 22 is insufficient. At this time, before the closing member 21 is brought into contact with the opening surface 30, the pump output is raised again to cause the cam mechanism 21 to be actuated, and the switching valve 17 having a small impact sound 20 and high reliability can be realized. Further, in the present embodiment, the pump control device 40 is configured to energize the cleaning pump 8 by turning on and off the two-part thyristor (switching device). The above switching device can also be replaced, and a voltage control device can be provided to control the input voltage of the cleaning pump 8. In this day, if the motor that drives the cleaning pump 8 is in a variable pressure mode, 1290033 can be easily adjusted to a fine adjustment of the pump output, and the upper jaw speed of the blocking member η can be easily controlled and the blocking member 21 can be more quietly abutted. In addition, the control device 40 can also be provided with a phase control skirt to control the input phase of the cleaning pump 8. Simple control, and it is possible to realize a switching valve with a small switching action sound. (Embodiment 2) Next, an embodiment of the present invention will be further described with reference to other embodiments. The same components as those used in the prior art in the embodiments are denoted by the same reference numerals or drawings. As shown in Fig. 9, the dishwasher of the second embodiment has a washing tank 4 having a washing nozzle 14 on the left side in the washing tank 4, a washing spray S15 on the right side, and a washing nozzle 16 on the surface side as seen from the front. . A switching valve P is provided between the cleaning nozzles 15 to 16 and the cleaning pump 8, and the switching valve 17 can sequentially switch the water pressurized by the cleaning pump 8 into water to the cleaning nozzles 丨4 to 丨6. Or 2. The difference from the dishwasher of the first embodiment of Fig. 2 is that the pump control unit 40 is not provided. In the switching valve 17, the movement of the occluding member 21 and the operation of the cam mechanisms 22 and 23 are the same as those of the first embodiment, and therefore, the description thereof will be omitted, and the feature points of the second embodiment will be mainly described. As shown in Fig. 8, the dishwasher of the second embodiment is characterized in that it has a closing member 21 included in the switching valve 17 as an elastic member 25 which acts as a cushioning device. As shown in Figs. 10A to 10C, the occluding member 21 has a notch and a 19 1290033 disk 26, and has an elastic member 25 on the flat surface of the disk 26. The elastic material 25 is fixed to the disk 26 by adhesion or two-material molding. Here, the elastic member 25 has a function of alleviating the impact generated when the blocking member 21 is plugged at the outlets 2a to 2〇d. 5 As explained in the first embodiment, the force of the occluding member 21 rising is given by the hydraulic force. Since the dishwasher of the second embodiment has the pump control device 4, the blocking member 21 rises with the hydraulic force, and collides with the opening surface. At this time, since the occluding member 21 has the elastic member 25 on the upper surface, the collision can be alleviated, and the collision sound can be made small. Further, since the elastic material 25 abuts against the opening surface 30 and closes the outlet port 2, the watertightness is extremely high, so that the watertightness of the switching valve 17 is extremely excellent. As described above, the dishwasher of the second embodiment has the switching valve 17 in the middle of the water path connecting the cleaning pump 8 and the plurality of cleaning nozzles 14 to 16. The switching valve 17 is introduced into the inlet 19 to pressurize the water pressurized by the pump 8, and the introduced water is led out from the plurality of outlets 20a to 20d of the outlet 20 to a plurality of cleaning nozzles 14 to 16. The switching valve 17 has an occluding member 21 that reciprocates between the inlet 19 and the outlet 20. The occluding member 21 is intermittently rotated in the water passing portion 18, and sequentially plugs the outlets 20a to 20d. The switching valve 17 further has cam mechanisms 22 20 and 23 that interlock with the reciprocating motion of the blocking member 21 to rotate the blocking member 21 by a predetermined angle in one direction. Here, the occluding member 21 has a mitigation device for mitigating an impact generated when the outlets 2a to 2d are plugged. The mitigation impact device is formed of an elastic material 25 provided on the abutting surface between the blocking member 21 and the outlet 20, and the switching valve 17 having a small switching operation sound can be realized with a simple configuration. The dishware of the present embodiment is 20 1290033. The washing machine uses a cleaning fruit 8 and does not require another driving source. The switching valve π of the structure can be sequentially sprayed with water by the cleaning nozzles 14 to 16, so It will not cause the cost to rise, and the whole machine will not have to be too big to complete. 5 In addition, the 'cutting (four) 17 does not need a special driving source itself, and the cleaning pump can be operated intermittently to achieve low cost, so that higher reliability and durability can be obtained. Further, in the second example, the elastic member % is fixed to the closing member 21 to constitute an abutting surface. Alternatively, the entire member of the occluding member 21 may be made of an elastic material, or at least the disk portion 26 may be formed of a resilient material. In this way, since the thickness of the elastic material portion is increased, the effect of mitigating the collision becomes very large, and the collision sound, that is, the switching valve having the extremely small switching operation sound can be realized. As a result, the occluding member 21 can be made small in plasticization, and the switching valve 14 or the entire machine can be miniaturized. Further, the pump control device 40 of the first embodiment and the elastic member described in the second embodiment of the present invention may be used at the same time as the means for mitigating the impact. (Embodiment 3) The human body is further described with reference to other embodiments for the embodiment of the present invention. The same components as those used in the embodiments 2, 2 or the prior art are denoted by the same reference numerals or drawings. As shown in Fig. 11, the flat elastic member 25 is fixed to the surface where the closing member 21 abuts against the opening surface 30, and the gap 35 is provided on the inner surface of the elastic member 25 and the blocking member 2i. That is, the elastic member 25 and the void % constitute a cushion for mitigating the impact generated when the occluding member 21 is plugged with the outlet 20 and the impact means. The gap 35 is opposed to the rib 32 provided at a portion of the opening face 30 constituting the outlets 20a to 20d. The other constructions are the same as in the above-described embodiment 2. Next, the operation of the dishwasher of the third embodiment will be described. Further, the basic operation of the switching valve 5 及 and the operation of the entire dishwasher are the same as those of the second embodiment, and thus the description thereof is omitted. The reciprocating motion of the occluding member 21, particularly the movement at the time of ascending, is performed by the hydraulic force, and the collision sound is easily generated when the occluding member 21 abuts against the outlet 20. The occluding member 21 of the third embodiment is fixed to the elastic member 10 at the abutting surface with the outlet 20, and a gap 35 is provided on the inner surface of the elastic member 25. In particular, since the gap 35 is provided in a portion where the rib 32 and the closing member 21 face each other, only the elastic material 25 opposes the portion facing the rib 32. Thereby, the elastic material 25 allows deformation at the time of collision. As described above, the gap 35 serves as a absorbing material, and the effect of mitigating the collision with the multiplying effect of the elastic material 25 becomes very large, and it is possible to realize the collision 15 sound, that is, the switching valve 17 having a very small switching operation sound. This has the effect of miniaturizing the closing member 21 and miniaturizing the switching valve 17 or miniaturizing the entire apparatus. (Embodiment 4) Next, an embodiment of the present invention will be described using another embodiment. The same components as those used in the embodiments i, 2 or the prior art are denoted by the same reference numerals or drawings. The features of the fourth embodiment are based on the mitigation device and the magazine members %, 37. As shown in Fig. 12, the scraping spring members 36, 37 are provided at the outlet side of the closing member 21 at the portion where the closing member 21 and the opening (4) 22 1290033 constituting the outlet 2 are not abutted. The spring member 37 has an inner diameter larger than the outer diameter of the opening surface 3, and the - end is fixed to the outer peripheral portion of the closing member 21, and the other end abuts against the outer peripheral portion of the opening surface 30. On the other hand, the spring member is fixed to the periphery of the guide hole 29 of the closing member 36, and the other end abuts against the upper portion of the housing portion 38 formed at the upper portion of the water-passing portion 5. Here, the housing portion accommodates the portion of the rising shaft 34. Further, when the spring members 36, 37 are located at the position where the blocking member 21 is lowered, that is, the position of the end of the return path, the other end may abut against the outer peripheral portion of the opening face 30 and the upper portion of the receiving portion 38, respectively, and the blocking member 21 It is also possible to abut before approaching the end of the way to the opening portion 31. The other 10 structures are the same as in the above embodiment 2. The operation in the above configuration will be described below. Further, the basic operation of the switching valve 17 and the operation of the entire dishwasher are the same as those of the above-described second embodiment, and the description thereof will be omitted. Among the reciprocating motion of the occluding member 21, in particular, the motion system 15 at the time of ascent is performed by the hydraulic force. When the occluding member 21 abuts against the outlet 20, a large impact sound is easily generated. The switching valve 17 of the fourth embodiment is provided with compressible spring members 36 and 37 at the outlet side of the closing member 21 at a portion where the closing member 21 does not abut against the opening surface 3〇 constituting the outlet 2〇. Thereby, even if the hydraulic occlusion member 21 is added, the spring members 36 and 37 can also be used to relieve the rising speed by 20 degrees. By using two springs, the effect of mitigating the collision becomes very large, and it is possible to realize the collision sound, that is, the switching valve 17 that switches the operation sound to be extremely small. At this time, it should be noted that the spring members 36, 37 can be arranged to produce a uniform force acting on the occluding member 21. If a non-uniform force acts on the occluding member 21, the force of the bias will act on the occluding member. The occluding member 21 23 1290033 is unsealed in the hunting guide hole 29 and the water passage 18_3. The fourth embodiment of the occlusion member 21 reciprocates. The occlusion member 21 will reciprocate in the -f, oblique state. The sliding surface 27a does not match the rib 32 or the sliding surface lunar surface 33, and the cam mechanism m cannot function normally. * That is, if the blocking member 21 reciprocates in a state of being tilted, the cam mechanisms 22, 23 cannot fully function, and the straight motion cannot be converted into a rotational motion, and the outlets 20a to Shi can not be sequentially plugged, and the valve I7 is replaced. The action becomes unstable. Further, if the occluding member η reciprocates in the inclined state 10, the contact of the bore 29 with the shaft 34 becomes uneven - and there may be significant local wear. Lu and thus, by the uniform force acting on the occluding member 21, the inclination of the occluding member 21 in the reciprocating motion is reduced as much as possible, and the cam mechanism and the lion are often both positive and negative. That is, the straight-moving motion of the occluding member 21 is often correctly converted into a rotational motion, and the outlets are sequentially stoppered, so that the operation of switching the reading 17 becomes extremely stable. Further, other effects of the spring members 36, 37 are that the time required for the reciprocation of the occluding member 21 can be shortened. In the reciprocating motion of the occluding member 21, in particular, the movement at the time of descending is carried out by gravity, so that the occluding member 21 is rapidly lowered by the 20-folding greedy members 36, 37, whereby the falling time can be shortened and shortened The time of reciprocation. As described above, the compressible spring members 36, 37 are provided on the outlet side of the closing member 21, and the spring members 36, 37 are provided at portions where the blocking member 21 and the opening faces 3 which constitute the outlets 2aa to 2〇d are not abutted. Since the mitigating impact device mitigates the impact generated when the closing member 21 plugs the outlet 20 at 24 1290033, the switching valve 17 having a very small switching operation sound with excellent reliability and durability can be realized. Further, instead of the compression spring used in the fourth embodiment, a stretchable spring may be used, and one end of the stretchable spring may be fixed to the lower surface of the closing member 21, and the other end may be fixed to the bottom surface of the water passing portion 18 5 or the like. In this configuration, the closer the approaching member is toward the outlet 20, the closer the returning force of the outlet retractable spring is, and the collision can be alleviated. INDUSTRIAL APPLICABILITY The present invention provides a dishwasher having a switch 10 having a pole 10 of a simple configuration, the switch valve having an occlusion member that intermittently operates a reciprocating motion by a washing pump, and the occluding member can be Only a predetermined angle is rotated between one reciprocation. Further, it is possible to reduce the operation sound at the time of switching by means of a device which can alleviate the impact when the switching valve collides, and it is possible to selectively spray water from a plurality of cleaning nozzles by one cleaning pump. As a result, it is possible to provide a dishwasher which does not cause an increase in cost and an increase in size of the machine, and which can realize low noise and water saving. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a switching valve of a dishwasher according to an embodiment of the present invention. 20 is a front cross-sectional view of a dishwasher according to an embodiment of the present invention. Fig. 3 is a side sectional view showing the dishwasher of one embodiment of the present invention. Fig. 4A is a side view 1290033 of the occluding member used in an embodiment of the present invention. Fig. 4B is a top perspective view of the occluding member used in an embodiment of the present invention. Fig. 4C is a bottom perspective view of the occluding member used in an embodiment of the present invention. Fig. 5A is a cross-sectional view taken along line A-A of Fig. 1. Fig. 5B is a cross-sectional view taken along line B-B of Fig. 1. Fig. 5C is a cross-sectional view taken along line C-C of Fig. 1. Fig. 5D is a cross-sectional view taken along line D-D of Fig. 1. Fig. 6 is a plan view showing a state in which the closing member abuts against the opening surface in an embodiment of the present invention. Fig. 7 is a perspective view showing a sliding surface of a cam mechanism which constitutes an embodiment of the present invention. Figure 8 is a cross-sectional view showing a switching valve of another embodiment of the present invention. Figure 9 is a front cross-sectional view showing a dishwasher of another embodiment of the present invention. Fig. 10A is a side elevational view of the occluding member of another embodiment of the present invention. Fig. 10B is a top perspective view of the occluding member of another embodiment of the present invention. 20 Figure 10C is a bottom perspective view of the occluding member of another embodiment of the present invention. Figure 11 is a cross-sectional view showing a switching valve of still another embodiment of the present invention. Figure 12 is a cross-sectional view showing a switching valve of another embodiment of the present invention. 1290033 Fig. 13 is a front cross-sectional view of a conventional dishwasher. Fig. 14 is a side cross-sectional view of a conventional dishwasher. The main component representative symbol table is 1] water supply path 21... occlusion member 2... dishwasher body 22, 23...Cam mechanism 3...Water supply valve 24···Gap 4...washing tank 25···elastic material 5"·water storage unit 26...disc 6···water level sensor 26a...flat unit 7...warm water heater 27a, 27b, 28, 33... sliding surface 8... washing pump 29... pilot hole 9... nozzle 30... opening surface 10... tableware basket 31··· center shaft 11... drain pump 32... rib 12... front door 34 ...shaft 13... leftover filter, device 35...voids 14 to 16...washing nozzles 36,37...spring member 17...switching valve 38...accommodating portion 18...watering portion 40...pump control device 19···inlet D1... Trail 20a~20d···Exit D2...Outer diameter 27

Claims (1)

¥§〇1〇纽修(楚)本本1931103 Application for patent coverage Replacement of this application on March 30, 1996, the scope of application for patents: 1. A dishwasher, which includes a cleaning pump, and the aforementioned cleaning pump and the majority a water passage for cleaning the nozzle, a switching valve provided in the middle of the water passage, and a shock absorbing device. 5 The switching valve includes an inlet for introducing the water pressurized by the washing pump; the outlet has a plurality of The introduced water is led to the plurality of cleaning nozzles; the water passing portion is configured to connect the inlet and the plurality of outlets; and the 10 blocking member has a notch portion and a disc portion, and is reciprocable in the water passage, and The terminal is abutted against the outlet at the end of the forward direction from the inlet direction toward the outlet direction, and the mitigation impact device is configured to ease the collision between the occluding member and the outlet at the terminal of the forward path when the cleaning pump is operated. . 2. The dishwasher according to claim 1, wherein the mitigation device further comprises a pump control device having at least a microcomputer, and the damper member and the outlet are alleviated by controlling the output of the cleaning pump by the chest control The collision. The dishwasher according to claim 2, wherein the pump control farm is controlled such that the washing pump wheel is smaller when the washing pump is started. 4. The dishwasher according to claim 2, wherein the foregoing control device controls the output of the cleaning pump in the aforementioned way to a predetermined 28 1290033. Patent No. 93110363, the patent application scope is replaced by the March 1996. 30 is below the value. 5. The dishwasher according to claim 2, wherein the pump control device is controlled to reduce the output of the cleaning pump in the middle of the preceding path. 5. The dishwasher according to claim 2, Wherein the pump control device is controlled to reduce the output of the washing pump shortly after the closing of the blocking member in the forward path. 7. The dishwasher according to any one of claims 2 to 6, wherein the pump control device has a switching device, and the switching device causes the first pump to be periodically turned OFF/OFF. 8. The dishwasher according to any one of claims 2 to 6, wherein the pump control device has a voltage control device, and the voltage control device controls the input voltage of the cleaning pump. 9. The dishwasher according to any one of claims 2 to 6, wherein the pump control device has a phase control device, and the phase control device controls an input phase of the cleaning pump. 10. The dishwasher according to claim 1, further comprising an elastic member surrounding the disk portion, and the elastic member is used as the mitigation device. The dishwasher according to claim 1, wherein at least the disc system is made of an elastic body, and the occluding member itself is used as the mitigating impact device. 12. The dishwasher according to claim 1, further comprising an elastic member that surrounds the disk portion with a predetermined gap on the disk portion, and the patent application scope is replaced by the application of the patent application No. 29 1290033 No. 93110363 The elastic member and the aforementioned gap are used as the aforementioned cushioning device on March 30, 2013. The dishwasher according to claim 1, further comprising a spring member that fixes one end to the blocking member, and wherein the spring member restricts movement of the blocking member in the forward path to form the mitigation impact device. The dishwasher according to claim 13, wherein the spring member is fixed at one end to the outer periphery of the blocking member, and the other end abuts against the outer circumference of the outlet. 15. The dishwasher according to claim 13, wherein the spring member 10 is fixed at one end to a central portion of the blocking member. 16. The dishwasher of claim 1, wherein the mitigation device comprises a pump control device including at least a microcomputer and controlling an output of the cleaning pump, and an elastic member surrounding the disk portion, and the pump control device The output of the aforementioned cleaning pump is controlled. The dishwasher of claim 1, wherein the switching valve further has a cam mechanism, and the cam mechanism rotates the blocking member to rotate two adjacent ones of the plurality of outlets during the reciprocating motion The angle formed by the exit. 20 30