JPH0856885A - Tableware washing machine - Google Patents

Abstract

PURPOSE: To ensure a sufficient water sending amt.while enhancing reliability, in a tableware washing machine wherein a valve mechanism is interposed between a nozzle and a washing pump, by improving the valve mechanism. CONSTITUTION: When a thermo-actuator is set to a current non-supply state, a stopper 55 is not moved and the rising route of a ball valve 54 is opened. When washing is started, the ball valve placed on a placing part 52 is pushed up by washing water to close the inflow port 49 to a tower nozzle 24. By this mechanism, washing water is ejected only from an arm nozzle 21. When the thermo-actuator is set to a current supply state, the stopper 55 falls forwardly and the rising route of the ball valve is closed. In this state, the ball valve pushed up by washing water is stopped by the stopper and the inflow port to the tower nozzle 24 is not closed. By this constitution, washing water is ejected from both of the arm nozzle and the tower nozzle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher in which a plurality of tableware baskets are arranged in a washing chamber and nozzles provided corresponding to the tableware baskets spray water to the tableware in the basket.

[0002]

2. Description of the Related Art Conventionally, in this type of dishwasher, for example, Japanese Unexamined Patent Publication No. 5-154080 (A47L15 /
42).

In this apparatus, tableware baskets are arranged at the upper part and the lower part of the washing chamber, and a fountain (nozzle) is provided below each tableware basket. Further, an electromagnetic valve is provided in the middle of the water supply path connecting the upper fountain body and the pump, and when the upper tableware basket is not used, the electromagnetic valve is closed to cut off the water supply to the upper fountain body. .

As the electromagnetic valve of such a dishwasher,
Usually, the one as shown in FIG. 9 was used.

In this solenoid valve, a water passage 103 is formed in a horizontal direction in a spherical valve body 102 that closes the inside of a pipe 101, and the valve body 102 is rotated in a horizontal direction by a torque motor 104. are doing.

Thus, when the water passage 103 is oriented in the same direction as the pipe 101, the valve is opened and water flows. On the other hand, from this state, the torque motor 104
When the valve body 102 is rotated 90 degrees at, the valve is closed and water stops flowing.

[0007]

However, in the solenoid valve as described above, since the diameter of the water passage formed in the valve body is considerably smaller than the diameter of the pipe, a sufficient amount of water can be supplied. Therefore, in a dishwasher using such a solenoid valve, sufficient water cannot be supplied to the upper fountain body and sufficient water can be poured from the upper fountain body to the dishes. There wasn't.

When water is being sent into the pipe,
Since a considerable amount of water pressure is applied to the valve body and this is applied to the shaft of the torque motor, damage will occur unless the structure that supports the shaft and the motor is made quite strong, resulting in malfunction. I was afraid.

The present invention relates to an improvement of a dishwasher and solves such a problem.

[0010]

DISCLOSURE OF THE INVENTION The present invention is directed to a plurality of tableware baskets arranged in a cleaning chamber, a nozzle component for injecting cleaning water to the tableware in each of the tableware baskets, and the nozzle component for cleaning. In a dishwasher equipped with a pump for sending water, the nozzle component is composed of a main nozzle used in all cleaning courses and an auxiliary nozzle used according to the cleaning course, and the auxiliary nozzle is connected to the nozzle from below. In the connected water pipe, a valve mechanism for opening and closing an inflow port for injecting washing water into the auxiliary nozzle is provided, and the valve mechanism is a mounting portion provided in a part of the water pipe, and When the pump operates, the ball valve that rides on the flow of washing water toward the auxiliary nozzle and rises from the placement portion to block the inflow port, and the pump stops, and the ball valve moves from the inflow port by its own weight. When it was intelligent, which is constituted by a guide member for guiding the ball valve to the mounting section, the blocking member for preventing the rise of the ball valve from the mounting section.

Further, the blocking member blocks the rising of the ball valve by blocking the rising path of the ball valve.
Alternatively, the blocking member blocks the rise of the ball valve by preventing the wash water from flowing into the placing portion.

Further, the guide member is formed along the flow direction of the washing water and has an upper surface formed of a rib inclined toward the mounting portion.

[0013]

[Function] When the tableware to be washed is relatively small, the tableware is stored only in the tableware basket corresponding to the main nozzle, and when the tableware to be washed is large, the tableware basket corresponding to the auxiliary nozzle is also stored. It

When the cleaning course without the auxiliary nozzle is executed, when the pump operates, the cleaning water is sent toward both the main nozzle and the auxiliary nozzle. When the cleaning water toward the auxiliary nozzle passes through the mounting portion in the water supply pipe, it pushes up the ball valve in this mounting portion. The ball valve rides on this flow toward the auxiliary nozzle and closes the inlet port to the auxiliary nozzle. Thus, the cleaning water is not sprayed to the auxiliary nozzle, and the cleaning water is sprayed only from the main nozzle.

When the pump is stopped, the ball valve blocking the inflow port falls by its own weight and is guided by the guide member to return to the mounting portion. Specifically, the guide member has a rib whose upper surface is inclined toward the mounting portion, and the ball valve dropped on the rib reaches the mounting portion through the inclined portion.

On the other hand, when the cleaning course using the auxiliary nozzle is executed, the rise of the ball valve is blocked by the blocking member. Specifically, the blocking member blocks the ascending path of the ball valve to prevent the ball valve from moving even when pushed up by the cleaning water, thereby preventing the ball valve from rising. Alternatively, by preventing the wash water from flowing into the mounting portion, the ball valve is prevented from being pushed by the wash water to prevent the rise. In this way, the inflow port of the auxiliary nozzle is not blocked by the ball valve, and the cleaning water is also sprayed from the auxiliary nozzle.

The guide member is composed of ribs formed along the flow direction of the cleaning water, so that the cleaning water flowing in the water supply pipe is unlikely to be obstructed.

[0018]

Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 is a dishwasher according to an embodiment of the present invention. This dishwasher is a built-in type that is installed by installing the main body in a sink.

Reference numeral 2 is a machine frame of the dishwasher 1, and 3 is a cleaning chamber provided in the machine frame 2, the front surface of which is open. Four
Is a door for opening and closing the cleaning chamber 3, the lower end of which is supported so as to open toward the front. Reference numeral 5 denotes an operation panel attached to the upper portion of the door 4, which includes an operation key group for setting various cleaning courses, a cleaning course, and a display LED group showing the degree of progress of driving.

6 is an upper basket for storing dishes, which is arranged in the upper stage of the washing chamber 3, and 7 is a lower basket for storing dishes, which is also arranged in the lower stage.

Reference numeral 8 denotes slide fittings (only one side is shown in the drawing) provided on the left and right sides of the upper basket 6 for supporting the upper basket 6. The upper basket 6 is attached to the slide fitting 8 so as to be movable back and forth so as to be sandwiched from above and below by a pair of rotatable rollers 9 provided on the rear side. The slide metal fitting 8 is formed in a C-shaped cross section, and accommodates a pair of support rollers 10 provided from the left and right walls above the cleaning chamber 3 inside and is attached to these left and right walls so as to be movable back and forth. Has been. Thus, when the tableware is taken out, the slide metal fitting 8 can be pulled out forward, and the upper basket 6 can be drawn further forward with respect to the slide metal fitting 8.

Reference numeral 11 denotes a support plate fixed to the lower left and right sides of the lower basket 7 (only one side is shown in the drawing), 12
Is a lifting link mechanism attached to this support plate 11,
The links 14 and 15 rotatably connected to each other by the pin 13 at the center of each other rise to raise the lower basket 7. Rollers 16 and 17 are attached to the lower ends of the links 14 and 15, respectively. These rollers 1
Reference numerals 6 and 17 are mounted on a guide rail 18 provided from the lower wall of the cleaning chamber 3 so as to be movable back and forth.

Reference numeral 19 is a cross section C provided on the back surface of the door 4.
It is a character-shaped guide member, and is arranged so as to be positioned substantially on the same straight line as the guide rail 18 when the door 4 is opened. When the lower basket 7 is pulled out, the guide member 19 accommodates and guides the rollers 16 and 17 of the links 14 and 15 therein, and prevents the lower basket 7 from falling during movement.

Thus, when the tableware is taken out, the lower basket 7 can be pulled out to the upper surface of the door 4 and further lifted by the link mechanism 12. At this time, the pulling force of the spring 20 hung on the lower ends of both the links 14 and 15 causes the links 14 and 15 to stand up by only slightly lifting them.

Reference numeral 21 is a hollow nozzle arm disposed below the lower basket 7, and a plurality of injection ports 22 are provided on the upper surface thereof. This nozzle arm 21 is used in all cleaning courses and corresponds to the main nozzle of the present invention. A nozzle shaft 23 is erected on the bottom surface of the cleaning chamber 3 and rotatably supports the nozzle arm 21 in a horizontal direction, and also functions as a water supply pipe for supplying cleaning water to the nozzle arm 21.

Reference numeral 24 denotes a tower nozzle connected to the tip of the nozzle shaft 23, and the tip of the tower nozzle extends to the vicinity of the upper basket 6. An injection port 25 is formed on the peripheral edge of the tip portion. The tower nozzle 24 is used in a cleaning course used when the tableware is stored in both the upper basket 6 and the lower basket 7 according to the cleaning course, and corresponds to the auxiliary nozzle of the present invention. It is a thing.

26 is a drainage tank formed in front of the bottom of the cleaning chamber 3, and 27 is a filter attached to the upper surface of the drainage tank 26 for removing the leftovers that have run down from the dishes.

Reference numeral 28 denotes a washing pump, and a casing 29 having a suction port connected to the drainage tank 26, and this casing 2
It is composed of an impeller 30 arranged in the interior 9 and a motor 31 for driving the impeller 30.

Reference numeral 32 is a connecting pipe for connecting the discharge port of the casing 29 and the nozzle shaft 23. This connecting pipe 3
2 and the nozzle shaft 23 constitute a water pipe of the present invention. Inside the connection pipe 32, a valve mechanism 33 is provided for switching whether or not to send the wash water to this nozzle by opening and closing the inlet for letting the wash water flow into the tower nozzle 24. The valve mechanism 33 will be described in detail later.

Reference numeral 34 is a drainage pump connected to the drainage tank 26, for draining the cleaning water in the cleaning chamber 3 out of the machine through a drainage hose 35.

Reference numeral 36 denotes a water level detecting device, which is the drain tank 2
The pressure pipe 37 is connected to the pressure pipe 37 and the pressure switch 38 is connected to the pressure pipe 37. The water level can be detected by detecting pressures corresponding to various water levels in the cleaning chamber 3 via the pressure pipe 37 with the pressure switch 38.

Reference numeral 39 denotes a loop-shaped sheathed heater provided at the bottom of the cleaning chamber 3, which warms the cleaning water and rinse water stored at the bottom of the cleaning chamber 3, and raises the temperature in the cleaning chamber 3 during drying to clean the same. -It enhances the drying effect.

Reference numeral 40 is a water supply nozzle provided above the rear portion of the cleaning chamber 3, and 41 is an electromagnetic water supply valve provided in a water supply pipe 42 connected to the water supply nozzle 40. Cleaning room 3
Water is supplied to and from the electromagnetic water supply valve 41 by opening and closing.

Similarly, 43 is an intake duct provided from above the cleaning chamber 3 to the rear, and 44 is an intake fan arranged in the intake duct 43, and an intake port (not shown) provided at the upper end of the front surface of the main body. The air taken in from (1) is sent into the cleaning chamber 3 through the inlet 45 provided at the lower part of the rear wall of the cleaning chamber 3. Reference numeral 46 denotes an exhaust duct provided above the front part of the cleaning chamber 3, and the exhaust port 4 provided at the upper end of the front surface of the main body.
7, which is sent into the cleaning chamber 3 by the intake fan 44 and discharges the air circulating in the chamber.

Now, FIG. 2 is an enlarged sectional view of the vicinity of the connecting pipe 32 showing the first embodiment of the valve mechanism 33.

An inlet port 48 to the arm nozzle 21 and an inlet port 49 to the tower nozzle 24 are formed on the nozzle shaft 23. A female screw portion 50 is formed on the nozzle shaft 23, and a male screw portion 51 is formed on the connection pipe 32. The nozzle shaft 23 and the connection pipe 32 are formed on the flange portions 23a, 32a formed respectively. And is joined by a screw type with the bottom wall of the cleaning chamber 3 interposed therebetween.

In the connecting pipe 32, a mounting portion 52 is provided at the bottom of the front side of the pipe by making the inflow port 53 of the connecting pipe 32 smaller than the inner diameter of the pipe. 54 is a Duracon-made ball valve placed on the mounting portion 52,
The diameter of the ball valve 54 is slightly larger than the inflow port 49 of the nozzle shaft 23 to the tower nozzle 24.

Reference numeral 55 is a stopper for preventing the ball valve 54 from rising. This stopper 55 is shown in FIG.
As also shown in FIG. 5, it comprises a trapezoidal lid 56 and shafts 57 formed on both sides of the lower end of the lid 56 and rotatably supported on the inner wall of the connecting pipe 32.

The stopper 55 is arranged slightly behind the ball valve 54 and at a position slightly lower than the position of the head of the ball valve 54, so that the ball valve 54 does not separate from the mounting portion 52, that is, moves to the rear. It does not fall into the casing 29 of the washing pump 28 from the inlet 53 of the connecting pipe.

FIG. 4 shows a drive mechanism for the stopper 55. One of the shafts 57 penetrates the inner wall of the connecting pipe 32 and extends to the outside of the pipe, and an operating lever 58 is attached to the outside of this. Reference numeral 59 denotes a thermoactuator provided behind the operation lever 58 to drive the operation lever 58. The thermoactuator 59 is fixed by a claw 61 to a mounting plate 60 formed integrally with the connecting pipe 32.

Thus, this thermo actuator 59
When the actuator is energized, the plunger 61 of the actuator 59 moves forward to rotate the operating lever 58 in the forward direction. As a result, the shaft 57 rotates in the forward direction, and the lid 56 falls forward to close the upward path of the ball valve 54.

Reference numeral 63 is a guide member arranged on the upper rear side of the connecting pipe 32. As shown in FIG. 5, the guide member 63 is composed of two ribs 64 formed in a lattice shape along the flow direction of the washing water in the connection pipe 32. The two ribs 64 are inclined so that they fall forward, that is, toward the mounting portion 52.

With the above construction, when the amount of dishes to be washed is small and only the lower basket 7 is used and the washing water is sprayed only from the arm nozzle 21, the thermoactuator 59 is de-energized. . This allows the ball valve 5
The ascending path of 4 is open.

When the cleaning is started and the cleaning pump 28 is operated, the cleaning water flows toward the arm nozzle 21 and the tower nozzle 24 through the connecting pipe 32, the nozzle shaft 23. At this time, the ball valve 54 placed on the mounting portion 52 is pushed up by the wash water passing therethrough and rises (solid line arrow in FIG. 2), and as shown by the broken line in FIG. 2, an inlet port 49 to the tower nozzle 24. Close up. After that, this state is maintained by water pressure.
As a result, the cleaning water is sent only to the arm nozzle 21,
It is ejected from the ejection port 22 of the arm nozzle 21.

When the cleaning is completed and the cleaning pump 28 is stopped, the ball valve 54 blocking the inflow port 49 falls by its own weight and is guided by the guide member 63 to return to the mounting portion 52 (FIG. 2).
Dashed arrow).

On the other hand, since the amount of dishes to be washed is large,
When both the upper and lower baskets 6 and 7 are used and the wash water is sprayed from both the arm nozzle 21 and the tower nozzle 24, the thermo actuator 59 is energized. As a result, the stopper 55 falls forward as shown by the broken line in FIG. 2, and the upward path of the ball valve 54 is closed.

When washing is started in this state,
The ball valve 54 placed on the mounting portion 52 is about to be pushed up by the wash water that also passes therethrough. However, the ball valve 54 is stopped by the stopper 55, and the tower nozzle 2
Inlet 49 to 4 is not blocked. As a result, the cleaning water is sent to both the arm nozzle 21 and the tower nozzle 24, and is sprayed from both spray ports 22 and 25.

Since the guide member 63 is formed by the grid-shaped ribs 64 formed along the flow direction of the wash water, the wash water flowing through the water pipe 32 is less likely to be disturbed by the guide member 63. A smooth flow of wash water can be secured.

Next, FIG. 6 is an enlarged sectional view of the vicinity of the connecting pipe 32 showing the second embodiment of the valve mechanism 33.

65 is a partition wall 66 at the rear of the connecting pipe 32.
In the movement path of the ball valve 67 formed by isolating the ball valve 67, a mounting portion 68 on which the ball valve 67 is placed is formed by reducing the diameter of the lower portion. 69 is the above-described storage unit 6
An insertion hole provided in the inner wall of the connecting pipe 32 at a position above 8.
Reference numeral 70 denotes a cylindrical elastic stopper (blocking member) that is inserted into and removed from the moving path 65 through the insertion hole 69. The stopper 70 has a flange portion 70 a formed around the bottom portion thereof fitted in a circular recess 71 formed around the insertion hole 69 in the outer wall of the connecting pipe 32.

Reference numeral 72 denotes a cylindrical case attached to the outer wall of the connecting pipe 32 from the rear of the stopper 70, and a square flange portion 72a formed on the bottom of the cylindrical case 72 has a connecting pipe 32.
It is screwed to a mounting boss 73 formed on the outer wall.
Then, an annular rib 72b erected from the inner edge of the front surface of the cylindrical case 72 is fitted into the recess 71, and the brim portion 70a of the stopper 70 is pressed against the bottom surface of the recess 71 by the tip portion thereof. ing. At this time, the collar portion 70a is fixed, but the stopper 70 is made of an elastic body, so that the main body portion can move back and forth. Further, since the collar portion 70a, which is an elastic body, comes into close contact with the bottom surface of the recess 71, even if the water in the connecting pipe 32 leaks through the insertion hole 69, it does not leak outside.

Reference numeral 74 is a solenoid which is attached to the bottom of the cylindrical case 72 and which is a drive mechanism for moving the stopper 70. The solenoid 76 has a cylindrical body 76 with a built-in solenoid coil. The plunger 77 including the plunger 77 accommodated therein is passed through the inside of the cylindrical case 72, and its tip end is attached to the bottom of the stopper 70. An eaves-shaped seat portion 77a is formed in the plunger 77 in the vicinity of the stopper 70, and a coil spring 78 is interposed between the seat portion 77a and the bottom of the case 72. The coil spring 78 urges the plunger 77 and the stopper 70 attached to the plunger 77 toward the connecting pipe 32.

When the solenoid coil 75 is energized, the plunger 77 is attracted to the inside of the cylinder 76 by the magnetic force acting on the solenoid coil 75. As a result, the stopper 70 moves in the direction opposite to the biasing direction of the coil spring 78, and is drawn into the cylindrical case 72. On the other hand, when the energization is stopped, the stopper 70 is pushed into the moving path 65 by the bias of the coil spring 78. This closes the upward path of the ball valve 67.

Reference numeral 79 is a guide member provided at an upper position on the front side of the connecting pipe 32. As shown in FIG. 7, the guide member is provided between the inner wall of the connecting pipe 32 and the partition wall 66, and is provided in a grid shape along the flow of the washing water in the connecting pipe 32. It consists of ribs 80. The two ribs 80 are inclined rearwardly, that is, toward the mounting portion 68.

Thus, when the washing water is sprayed only from the arm nozzle 21, the solenoid 74 is energized.
As a result, the stopper 70 is retracted into the cylindrical case 72, and the upward path of the ball valve 67 is open.

When cleaning is started and the cleaning pump 28 is operated, the ball valve 67 placed on the mounting portion 68 is pushed up by the flow of the cleaning water passing through the moving path 65 and rises (solid line arrow in FIG. 6). ), The inlet 49 to the tower nozzle 24 is closed as shown by the broken line in FIG. After that, this state is maintained by water pressure. As a result, the cleaning water is sent only to the arm nozzle 21, and the jet nozzle 2 of the arm nozzle 21
It is injected from 2.

When the cleaning is completed and the cleaning pump 28 is stopped, the ball valve 67 blocking the inflow port 49 falls by its own weight and is guided by the guide member 79 to return to the mounting portion 68 (broken line in FIG. 6). Arrow).

On the other hand, when the washing water is sprayed from both the arm nozzle 21 and the tower nozzle 24, the solenoid 74 is used.
Is de-energized. Thereby, the stopper 70
The ball valve 67 is projected into the moving path 65 and the ascending path of the ball valve 67 is closed.

When washing is started in this state,
The ball valve 67 placed on the placing portion 68 is about to be pushed up by the wash water that also passes through the ball valve 67. However, the ball valve 67 is stopped by the stopper 70, and the tower nozzle 2
Inlet 49 to 4 is not blocked. As a result, the cleaning water is sent to both the arm nozzle 21 and the tower nozzle 24, and is sprayed from both spray ports 22 and 24.

Next, FIG. 8 shows a third embodiment of the present invention in which the stopper (blocking member) 70 of the second embodiment is arranged at the inlet 81 of the moving path 65. That is, when the solenoid 74 is in the non-energized state, the stopper 70 closes the moving path 65 inlet 81, and when the solenoid 74 is in the energized state, the inlet 81 is opened.

Thus, when the washing water is sprayed from only the arm nozzle 21, the solenoid 74 is energized.
As a result, the stopper 70 is retracted into the cylindrical case 72, and the inlet 81 of the moving path 65 is opened.

When the cleaning is started, part of the cleaning water passing through the connecting pipe 32 passes through the moving path 65, and at this time, the ball valve 67 placed on the mounting portion 68 is pushed up. As a result, the ball valve 67 closes the inflow port 49 to the tower nozzle 24, and as a result, the cleaning water is sprayed only from the arm nozzle 21.

On the other hand, when the washing water is sprayed from both the arm nozzle 21 and the tower nozzle 24, the solenoid 74
Is de-energized. Thereby, the stopper 70
The entrance 81 of the moving path 65 is closed.

Even if the cleaning is started in this state and the cleaning water passes through the inside of the connecting pipe 32, it does not flow into the moving path 65, so that the ball valve 67 is not pushed up. Therefore, the inflow port 49 is not blocked by the ball valve 67, and the cleaning water is sent to both the arm nozzle 21 and the tower nozzle 24 and sprayed from both the spray ports 22 and 25.

As described above, according to the construction of the dishwasher of the embodiment of the present invention, the diameter of the inflow port 49 to the tower nozzle 24 may be made slightly smaller than the diameter of the ball valve 54 (67),
Since it is possible to secure a sufficient water passage when the valve is open,
A sufficient amount of water can be flowed, and sufficient water can be supplied to the tower nozzle 24.

When the ball valve 54 (67) is prevented from rising, the mounting portion 52 (68) is attached to the stopper 55 (70).
Only a portion of the washing water that flows to is applied, and does not apply a great force. Therefore, the stopper 55 (70) and the drive mechanism for driving the stopper 55 are less likely to be damaged, malfunction of the valve mechanism 33 is less likely to occur, and reliability is improved.

[0068]

According to the structure of the present invention, the diameter of the inlet of the auxiliary nozzle may be made slightly smaller than the diameter of the ball valve, and a sufficient water passage can be secured when the valve is opened. A large amount of water can be flowed, and sufficient water can be supplied to the auxiliary nozzle.

Further, when the ball valve is prevented from rising, the blocking member receives only a part of the washing water flowing to the mounting portion and does not receive a large force. Therefore, the blocking member is less likely to be damaged, and malfunction of the valve mechanism is less likely to occur,
Higher reliability.

Furthermore, since the guide member is constituted by the ribs formed along the flow direction of the wash water, the wash water flowing in the water supply pipe is not easily disturbed by the guide member and a smooth flow of the wash water can be secured. .

[Brief description of drawings]

FIG. 1 is a side sectional view showing an outline of an entire dishwasher of an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the vicinity of the connecting pipe showing the first embodiment of the valve mechanism also provided in the connecting pipe.

FIG. 3 is a plan sectional view of a connecting pipe showing a structure of a stopper which also constitutes the valve mechanism of the first embodiment.

FIG. 4 is a side view of the connecting pipe showing a drive mechanism that also drives the stopper.

FIG. 5 is a plan view of a connecting pipe showing a structure of a guide member which constitutes the valve mechanism of the first embodiment.

FIG. 6 is an enlarged cross-sectional view of the vicinity of a connecting pipe similarly showing a second embodiment of the valve mechanism.

FIG. 7 is a plan view of a connecting pipe showing a structure of a guide member which constitutes the valve mechanism of the second embodiment.

FIG. 8 is an enlarged cross-sectional view of the vicinity of a connecting pipe similarly showing a third embodiment of the valve mechanism.

FIG. 9 is a vertical cross-sectional view of a solenoid valve used in a conventional dishwasher.

[Explanation of symbols]

 3 Cleaning Chamber 6 Upper Basket 7 Lower Basket 21 Arm Nozzle (Main Nozzle) 23 Nozzle Shaft (Water Pipe) 24 Tower Nozzle (Auxiliary Nozzle) 28 Cleaning Pump 32 Connection Pipe (Water Pipe) 33 Valve Mechanism 49 Inlet 52, 68 Mounted Mounting portion 54,67 Ball valve 63,79 Guide member 64,80 Rib 55,70 Stopper (blocking member)

Claims (4)

[Claims] 1. A plurality of tableware baskets arranged in a cleaning chamber, a nozzle component for injecting cleaning water to the tableware in each dish basket, and a pump for sending cleaning water to the nozzle component. In the dishwasher, the nozzle configuration part is composed of a main nozzle used in all cleaning courses and an auxiliary nozzle used according to the cleaning course, and in the water pipe connected to the auxiliary nozzle from below, A valve mechanism for opening and closing an inflow port for injecting washing water into the auxiliary nozzle is provided, and the valve mechanism includes a mounting portion provided in a part of the water supply pipe and the auxiliary nozzle when the pump operates. When the ball valve that rides on the flow of the washing water toward the above-mentioned part and blocks the inflow port and the pump stops and the ball valve falls from the inflow port by its own weight, Dishwasher, characterized a guide member for guiding the Le valve to the mounting section, by being configured by the blocking member for preventing the rise of the ball valve from the mounting section. 2. The dishwasher according to claim 1, wherein the blocking member blocks the rising path of the ball valve to prevent the ball valve from rising. 3. The dishwasher according to claim 1, wherein the blocking member blocks the rise of the ball valve by preventing the flush water from flowing into the placing portion. 4. The dishwasher according to claim 1, wherein the guide member is formed along a flow direction of washing water, and an upper surface of the guide member is a rib inclined toward the placing portion. .