JP4986801B2 - Dishwasher - Google Patents

Description

  The present invention relates to a dishwasher, and more particularly to a drawer-type dishwasher that is installed in a sink or the like and moves a washing tank back and forth to take in and out dishes and the like.

  In a conventional dishwasher, the opening of the washing tub is opened and closed with a lid, and the lid is closed by a lock device. The lock interlock switch that opens and closes in conjunction with the lock device and directly opens and closes the washing pump and heater, A lid detection switch for detecting opening and closing, and the control means starts the operation of the device when both the lock interlock switch and the lid detection switch are closed, and the lock interlock switch and the lid detection switch are operated during the operation of the device. There is one in which the operation of the device is stopped when either one is in an open state (for example, see Patent Document 1).

  In addition, the dishwasher installed in the sink contains a box-shaped washer main body that is open on the front and fixed to the sink, and a dish basket that has an upper surface open and contains tableware. The cleaning tank is provided with a latch device that can be pulled out from the front opening, and the cleaning tank is provided with a latch device. When the cleaning tank is stored in the main body of the cleaning machine, the cleaning tank is held by the latch device. There is a thing which cannot be pulled out (for example, prior art 1).

JP-A-9-117399 (summary, FIG. 1)

  The dishwasher disclosed in Patent Literature 1 includes a main body portion having an upper surface opened, a cleaning tank having an upper surface opened and housed in the main body portion, and a lid for opening and closing the upper surface opening portion of the cleaning tank. Therefore, it should be applied to a dishwasher consisting of a washing machine main body with its front face open and fixed to a sink, etc., and a washing tank with its upper face opened and drawn out from the front opening of the washing machine main body. I can't.

When the dishwasher / dryer of the prior art 1 is used to put in and out dishes from the washing tub, the washing tub is provided with a heater, a washing nozzle, a washing pump, a water supply valve, a drainage pump, and the like. Therefore, there is a problem that a manual pulling out of the washing tank is heavy and a large force is required.
Further, when the cleaning tank is accommodated in the cleaning tank body, it is held by a latch, but since the latch is biased by a spring, a larger force is required to release the latch when the cleaning tank is pulled out. .

  Also, when pulling out the washing tank after pausing the operation, the washing pump is stopped by pressing the pause switch of the operation unit, but there is a delay until the water spray from the washing nozzle stops even if the washing pump is stopped. If the washing tank is pulled out quickly, hot washing water may be applied to the hands and body.

  The present invention has been made in order to solve the above-described problems, and is configured to automatically push out (or pull out) the cleaning tank from the front opening of the main body of the cleaning machine. It is intended to provide an easy-to-use dishwasher that does not require washing water or warm air to the hand or body even if the washing tank is pulled out during operation. .

The dishwasher according to the present invention has a box-shaped washing machine main body with an opening on the front surface and a door with an operation unit provided on the front surface. a cleaning tank that is out capable accommodated in direction, is provided between the cleaning tank or the washing tub and the washing machine body, by turning oN the open switch provided on the operation unit, extruding the cleaning tank from the cleaning machine body Or a slide device that pulls out, and the slide device is engaged with the main body portion attached to the cleaning tank, the slide shaft having the rack and slidably supported in the front-rear direction, and the rack of the slide shaft. And a pinion driven by a motor .

  According to the present invention, a heavy washing tank is automatically pulled out, and even if the washing tank is pulled out during operation, washing water and warm air are not applied to the hands and body, so that it is easy to use and highly reliable. A dishwasher can be obtained.

[Embodiment 1]
1 is a longitudinal sectional view of a dishwasher according to Embodiment 1 of the present invention, FIG. 2 is a front view of the washing tub of FIG. 1, FIG. 3 is an explanatory view of a slide device of the washing tub of FIG. FIG. 5 is a block diagram showing an electric circuit configuration of FIG. 1.

  As shown in FIG. 1, a box-shaped washing machine body 1 having an open front surface is accommodated in a box-shaped washing machine main body 1 having a front surface opened and installed on a sink or the like. The rails 3 provided on both sides of the lower part are configured to be able to be drawn forward from the front opening along a guide rail (not shown) provided in the cleaning machine main body 1.

  Reference numeral 4 denotes a door (front plate) provided on the front surface of the cleaning tank 2, and as shown in FIG. 2, an operation panel 5 is provided on the upper portion, and the operation panel 5 includes a start / pause switch 7, An operation unit 6 including an open switch 8 for sending an operation signal to a slide device 30 to be described later, a display unit 9 having a lamp for displaying a power source and a cleaning tank drawer, and the like are provided. Reference numeral 10 denotes an exhaust port for discharging hot air generated during the drying process. Referring again to FIG. 1, reference numeral 11 denotes a latch that is provided in the cleaning tank 2 and holds the cleaning tank 2 accommodated in the cleaning machine body 1, and 12 is a spring that biases the latch 11.

  In the cleaning tank 2, a heater 13 for heating the cleaning water and a cleaning nozzle 14 for ejecting the cleaning water are provided. A cleaning pump 15 for pumping the cleaning water to the cleaning nozzle 14 is provided below the cleaning tank 2. A drainage pump 16 is provided for discharging dirty cleaning water. Further, a water supply valve 17 for supplying cleaning water to the cleaning tank 2 and a blower 18 for sending outside air into the cleaning tank 2 during the drying process are provided between the rear part of the cleaning tank 2 and the main body 1 of the cleaning machine. A second heater 20 for heating the outside air is provided in the air passage 19 that communicates the blower 18 and the cleaning tank 2. Reference numeral 21 denotes a tableware basket in which dishes 22 and the like are placed and housed in the washing tub 2, 23 denotes an inner lid that closes the upper opening of the washing tub 2, and 24 denotes an interlock device that locks the latch 11.

  Reference numeral 30 denotes a slide device of the cleaning tank 2 attached to the lower part of the cleaning tank 2. As shown in FIG. 3, a slide shaft 33 provided with a rack 34 is provided in a groove 32 provided in the main body 31 and a holding part 35. And is slidably inserted in the axial direction (front-rear direction). Reference numeral 36 denotes a motor provided in the main body 31, and a pinion 37 that meshes with the rack 34 is provided on the output shaft thereof. Reference numeral 38 (FIG. 4) denotes a limiter detector that is provided at the innermost portion of the groove 32 and detects the position of the slide shaft 33.

  As shown in FIG. 4A, the slide device 30 configured as described above is configured so that the slide shaft 33 is formed in the groove 32 of the main body 31 when the cleaning tank 2 is accommodated at a predetermined position in the main body 1 of the cleaning machine. It is inserted to the innermost part, and the tip part is in contact with the rear wall of the cleaning machine body 1 (hereinafter, this state of the slide shaft 33 is referred to as retreat). At this time, the limiter detector 38 detects that the slide shaft 33 is in a predetermined retracted position.

  In this state, as shown in the flowchart of FIG. 6, when the open switch 9 of the operation unit 6 is turned on (step S-1), the motor 36 is energized to rotate the pinion 37 in the direction of arrow a (step S-). 2). As a result, the slide shaft 33 attempts to move to the right in the drawing (hereinafter referred to as advance), but the tip of the slide shaft 33 is in contact with the rear wall of the cleaning machine body 1, so that the pinion 37 rotates. Accordingly, the main body 31 moves toward the front opening of the cleaning machine main body 1, and the cleaning tank 2 to which the main body 31 is attached is pushed forward from the front opening of the cleaning machine main body 1 along the guide rail (step S-). 3). If the motor 36 is rotated in the opposite direction, the slide shaft 33 moves backward to a predetermined position, and the limiter detector 38 detects this.

  Reference numeral 40 denotes a control unit disposed between the cleaning tank 2 and the door 4 and includes a microcomputer 41 as shown in FIG. 5. The microcomputer 41 includes an operation unit 6, a water amount detection means 42, a cleaning unit. Signals from the water temperature detecting means 43, the door opening detector 44, the limiter detector 38, etc. are inputted, and control signals are sent to the heater 13, the washing pump 15, the drainage pump 16, the water supply valve 17, the blower 18, the slide device 30, and the like. Is output. In addition, a display signal is output to the display unit 9 of the operation unit 6.

Next, the operation of the dishwasher according to the present embodiment configured as described above will be described.
In cleaning the dirty tableware 22, first, the power switch is turned on. At this time, the power lamp 9 is turned on. Next, the open switch 8 of the operation unit 6 is turned on. At this time, the drawer lamp 9 of the cleaning tank 2 is turned on. Thereby, a control signal is sent from the control unit 40 to the slide device 30, the motor 36 is driven to rotate the pinion 37 in the direction of arrow a, the slide shaft 33 is advanced, and the cleaning tank 2 to which the slide device 30 is attached. Is pushed forward from the front opening of the cleaning machine body 1. Next, the motor 36 rotates in the reverse direction, and the slide shaft 33 is retracted until it is detected by the limiter detector 38 to prepare for the next time. In addition, even if the open switch 8 is turned on when the power is turned off, the drawer lamp 9 of the cleaning tank 2 is not lit, so that power consumption can be suppressed.

  At this time, if the slide shaft 33 is lengthened, the cleaning tank 2 can be pushed out to a desired position. However, if the slide shaft 33 is short, the cleaning tank 2 stops halfway, so that it is manually pulled out to the desired position. Also in this case, since the initial stage of drawing that requires a large force is pushed out by the slide device 30, a large force is not required for the subsequent manual withdrawal of the cleaning tank 2.

  Next, the tableware basket 21 in which the dirty tableware 22 and the like is placed is stored in the cleaning tank 2 from the upper surface opening, and the cleaning tank 2 is pushed into the main body 1 of the cleaning machine. As a result, the cleaning tank 2 is held in its position by the latch 11 and locked by the interlock device 24, and the distal end portion of the slide shaft 33 of the slide device 30 comes into contact with the rear wall of the cleaner main body 1. In this state, the start switch 7 of the operation unit 6 is turned on.

  As a result, the water supply valve 17 is opened to supply cleaning water into the cleaning tank 2, and when the water amount detecting means 42 detects that a predetermined amount of cleaning water has been supplied, the water supply valve 17 is closed. At this time, a detergent is put into the washing water as necessary. Next, the heater 13 is energized to heat the washing water to a desired temperature, and when the temperature detecting means 43 detects that the washing water has reached the desired temperature, the energization to the heater 13 is stopped. Then, the cleaning pump 15 is driven to pump the warmed cleaning water to the cleaning nozzle 14, and the cleaning water is ejected from the nozzle holes to clean the dishes 20. At this time, the cleaning nozzle 14 is rotated by a reaction force caused by the injection of the cleaning water, and uniformly sprays the cleaning water onto the dishes 22 and the like. The cleaning water sprayed into the cleaning tank 2 falls and gathers in the lower part of the cleaning tank 2, and is sprayed from the cleaning nozzle 14 again, and this circulation is repeated (cleaning process). Since the upper surface opening of the cleaning tank 2 is sealed by the inner lid 23, the cleaning water does not splash outside.

When a predetermined time has elapsed, the energization of the heater 13 and the cleaning pump 15 is stopped, and then the drain pump 16 is driven to discharge the sewage in the cleaning tank 2 to the outside.
When the drainage is completed, the energization to the drainage pump 16 is stopped, the water supply valve 17 is opened, and the cleaning water is supplied into the cleaning tank 2. Thereafter, rinsing of the tableware 22 and the like is performed by the same operation as the above-described cleaning process, and drained when the rinsing is completed for a predetermined time. Such rinsing and draining are repeated several times (rinsing step).

When the predetermined number of rinsing steps are completed, the blower 18 and the second heater 20 are energized to introduce outside air into the cleaning tank 2. The outside air is heated by the second heater 20 to become warm air, and is sent into the cleaning tank 2 to dry the entire area of the tableware 22 and the cleaning tank 2, and the hot air that has dried them is discharged from the exhaust port 10 to the outside. It is discharged (drying process).
When the predetermined time elapses, the energization to the blower 18 and the second heater 20 is stopped, and the drying process ends. Thereby, washing | cleaning, rinsing, and drying of the tableware 22 are completed. These series of operations are automatically performed according to a program set in the microcomputer 41 of the control unit 40.

  When taking out tableware 22 etc., the open switch 8 of the operation part 6 is turned ON, the washing tank 2 is pushed forward from the front opening part of the washing machine main body 1 by the slide device 30, and the tableware basket 21 or tableware 22 etc. are taken out. The washing tank 2 is returned to the washing machine main body 1 again. The operation of the slide device 30 at this time is as described above.

  According to the present embodiment, when the tableware 22 or the like is washed or when the tableware or the like 22 after the washing is taken out, the heavy washing tub 2 storing the table 22 is moved by the slide device 30 to the front opening of the washing machine body 1. Therefore, it is possible to obtain an easy-to-use dishwasher without requiring a large force for pulling out the washing tank 2.

[Embodiment 2]
FIGS. 7-14 is a flowchart which shows the other example of operation | movement of the dishwasher which concerns on Embodiment 2 of this invention, and this Embodiment makes the washing tank of the dishwasher which concerns on Embodiment 1 safer. The structure of the dishwasher is the same as that of the first embodiment.

When the dishwasher / dryer according to the flowchart of FIG. 7 turns on the open switch 8 for some reason during the washing operation of the tableware 22 or the like (step S-11), the controller 40 opens the open switch 8. Is turned on, the slide device 30 is controlled to advance the slide shaft 33 for a predetermined time (step S-12), and the cleaning tank 2 is pushed out (step S-13). Then, when the door opening detector 44 provided in the cleaning machine main body 1 detects this during the extrusion operation (step S-14) and sends a detection signal to the control unit 40, the control unit 40 causes the heater 13, Loads during operation of the cleaning pump 15, the drainage pump 16, the water supply valve 17, the blower 18 and the like (hereinafter, these are collectively referred to simply as loads) are stopped (step S-15). The cleaning tank 2 is continuously pushed out.
According to this example, the load during operation can be surely stopped and the washing tank 2 can be pushed out safely even during the washing, rinsing and drying processes of the tableware 22 and the like, so that washing water and warm air can be applied to the hand and body. Will not take.

  When the open switch 8 is turned on (step S-21), the dishwasher according to the flowchart of FIG. 8 stops the operating load (step S-22) and then slides before the slide device 30 operates. The apparatus 30 is operated (step S-23) to push out the washing tub 2 (step S-24), and a safer dishwasher can be obtained.

  When the dishwasher according to the flowchart of FIG. 9 pushes out the washing tub 2, before the open switch 8 is turned on (step S-31), the pause switch 7 is first turned on (step S-32). After the internal load is stopped, the open switch 8 is turned on (step S-33), the slide device 30 is operated, and the cleaning tank 2 is pushed out. That is, the open switch 8 cannot be operated before the temporary stop switch 7 is turned on, and a dishwasher with higher safety can be obtained.

  In the dishwasher according to the flowchart of FIG. 10, when the open switch 8 is turned on (step S-41), first, the interlock device 24 that locks the latch 11 is released (step S-42), and then the slide device. 30 is operated (step S-43), and the washing tank 2 is pushed out (step S-44). The washing tank 2 can be stably accommodated and held in the washing machine body 1.

  The dishwasher according to the flowchart of FIG. 11 turns on the open switch 8 (step S-51), and moves the slide shaft 33 of the slide device 30 forward for a predetermined time (for example, 1 second) (step S-52). After the tank 2 is pushed out and then the slide shaft 33 is moved backward (step S-53) for a certain time (for example, 1 second), the washing tank 2 is pulled out manually. Thereby, when accommodating the washing tank 2 in the washing machine main body 1, the washing tank 2 can be pushed to a predetermined position without being obstructed by the slide shaft 33.

  The dishwasher according to the flowchart of FIG. 12 is provided with a rest time (for example, 100 msec) between the forward movement operation and the backward movement operation of the slide shaft 33 of the slide device 30 in the dishwasher dryer of FIG. S-53a). By comprising in this way, the influence of the back electromotive force of the slide apparatus 30 can be reduced, and reliability can be improved.

  When the backward movement of the slide shaft 33 is detected by the limiter detector 38 provided in the slide device 30 in the dishwasher / dryer of FIG. 12 described above (step S-54), the dishwasher according to the flowchart of FIG. The retracting operation of the shaft 33 is stopped (step S-55), whereby the operation of the slide device 30 can be further stabilized.

  The dishwasher according to the flowchart of FIG. 14 is the case where the limiter detector 38 does not detect the backward movement of the slide shaft 33 when the slide shaft 33 of the slide device 30 is retracted in the dishwasher of FIG. -54) is configured to stop the backward movement of the slide shaft 33 after a predetermined time (for example, 1 second) has elapsed (step S-56), and thus the slide device 30 can be protected. .

[Embodiment 3]
FIG. 15 is a flowchart for explaining the operation of the dishwasher according to the third embodiment of the present invention.
When the open switch 8 is turned ON to draw out the cleaning tank 2 (step S-61), the slide shaft 33 of the slide device 30 moves forward (step S-62), and when a predetermined time (for example, 1 second) elapses (step S). -63) The limiter detector 38 is turned off (step S-64). If the limiter detector 38 is not turned OFF, the forward movement of the slide shaft 33 is repeated a plurality of times (N times) (step S-67). For example, even if the forward movement is repeated three times (step S-68), if the limiter detector 38 is not turned OFF, it is determined that the sliding device 30 and thus the door is open abnormally (step S-69). Stop.

  When the limiter detector 38 is turned off (step S-64), the slide shaft 33 stops moving forward (step S-65), and after a certain period of time (for example, 100 msec) (step S-66), the slide shaft 33 is stopped. When 33 is moved backward (step S-70), the limiter detector 38 is turned on (step S-71). If the limiter detector 38 does not turn on after a predetermined time (for example, 1 second) has elapsed (step S-73), the backward movement of the slide shaft 33 is repeated a plurality of times (step S-74). For example, if the limiter detector 38 is not turned on even if the backward movement is repeated three times (step S-75), it is determined that the slide device 30 is abnormal (step S-76), and the operation is stopped.

When the limiter detector 38 is turned on (step S-71), the backward movement of the slide shaft 33, and thus the operation of the slide device 30 is stopped (step S-72).
According to the present embodiment, the limiter detector 38 is not turned on within a predetermined time when the slide device 30 is operated, and accordingly, when the slide shaft 33 moves forward, and when the slide shaft 33 moves backward. In such a case, since the operation is determined to be abnormal and the operation is stopped, it is possible to notify the user of the abnormality of the drawer device (slide device 30 or the like) of the cleaning tank 2 and to protect them.

  In each of the above-described embodiments, if the tip of the slide shaft 33 of the slide device 30 is connected to the rear wall of the cleaning machine body 1, the motor 36 is rotated in the opposite direction to retract the slide shaft 33, thereby pulling it out. The washing tank 2 can be drawn into the washing machine body 1 and accommodated.

  Further, if the main body 31 of the slide device 30 is attached to the front opening (or rear side) of the cleaning machine main body 1 and the front end of the slide shaft 33 is connected to the cleaning tank 2, the slide shaft 33 moves backward (or The cleaning tank 2 can be pulled out (or pushed out) from the front opening of the cleaning machine main body 1 and moved forward (or backward) to push the cleaning tank 2 into the cleaning machine main body 1 (or Pull in).

  In the above description, the case where the slide device 30 is configured by the rack 34 and the pinion 37 is shown, but the present invention is not limited to this. For example, an actuator used for a cam mechanism or a linear mechanism, or a solenoid may be used.

It is a longitudinal cross-sectional view of the dishwasher which concerns on Embodiment 1 of this invention. It is a front view of the washing tank of FIG. It is explanatory drawing of the slide apparatus of FIG. It is action | operation explanatory drawing of the slide apparatus of FIG. It is a block diagram which shows the electric circuit structure of FIG. It is a flowchart explaining the extrusion effect | action of the washing tub of FIG. It is a flowchart explaining the effect | action of the dishwasher which concerns on Embodiment 2 of this invention. 10 is a flowchart of another example of the second embodiment. 10 is a flowchart of another example of the second embodiment. 10 is a flowchart of another example of the second embodiment. 10 is a flowchart of another example of the second embodiment. 10 is a flowchart of another example of the second embodiment. 10 is a flowchart of another example of the second embodiment. 10 is a flowchart of another example of the second embodiment. It is a flowchart explaining the effect | action of the dishwasher which concerns on Embodiment 3. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Washing machine main body, 2 Washing tank, 4 Door (front plate), 5 Operation panel, 6 Operation part, 7 Start / pause switch, 8 Open switch, 10 Exhaust port, 11 Latch, 13 Heater, 14 Washing nozzle, 15 Washing pump, 16 drainage pump, 17 water supply valve, 18 blower, 20 second heater, 21 tableware basket, 22 tableware, etc., 24 interlock device, 30 slide device, 31 main body, 33 slide shaft, 34 rack, 36 motor 37 pinions, 40 control units, 41 microcomputers.

Claims (12)

A box-shaped cleaning machine with an open front,
A cleaning tank having a door provided with an operation part on the front surface and having an upper surface opened and accommodated in the cleaning machine main body so that it can be taken in and out in the front-rear direction ,
Provided between the the cleaning tank or the washing tank the washing machine body, by turning ON the open switch provided on the operation unit, and a pre-Symbol elicit cleaning tank extruded from the washer body or sliding device Prepared,
The slide device is driven by a main body portion attached to the cleaning tank, a slide shaft having a rack and supported by the main body portion so as to be slidable in the front-rear direction, and a rack and a meshing motor of the slide shaft. A dishwasher characterized by comprising a pinion . Wherein when the cleaning tank accommodating the cleaning machine body is claim 1, wherein a distal end portion of the slide shaft is configured to abut the rear wall of the washing machine main body protruding from the main body portion Dishwasher. A box-shaped cleaning machine with an open front,
A cleaning tank having a door provided with an operation part on the front surface and having an upper surface opened and accommodated in the cleaning machine main body so that it can be taken in and out in the front-rear direction,
Provided with the slide tank or a slide device that is provided between the cleaning tank and the main body of the cleaning machine, and pushes out or pulls out the cleaning tank from the main body of the cleaning machine by turning on an open switch provided in the operation unit. ,
A main body part in which the slide device is mounted in the vicinity of the front opening of the main body of the washing machine, and a slide shaft having a rack and supported by the main body part so as to be slidable in the front-rear direction and having a tip connected to the washing tank If, tableware washing dryer you characterized by being configured by a pinion driven by the rack and meshing motor of the slide shaft. The door detector provided in the main body of the washing apparatus or washing tank, when said door detector detects the extrusion or drawer of the washing tank, according to claim 1 to 3, characterized in that stopping the load during operation The dishwasher as described in any one of Claims . The dishwasher according to any one of claims 1 to 3 , wherein when the open switch is turned on, the operating load is stopped before the slide device operates. When extrusion or draw the cleaning tank during operation, according to claim 1 to 3 in which first and ON pause switch provided on the operation section to stop the load during operation, and then characterized by ON the open switch The dishwasher as described in any one of . Wherein an interlock device for locking the cleaning tank to the washer main body is provided, when the ON open switch is released the interlock device, then any of claims 1-3, characterized in that the slide device is operated A dishwasher according to claim 1 . When said push the cleaning tank by the slide apparatus, Dishwasher according to claim 1 or 2 Symbol mounting, characterized in that retracting the slide shaft after said slide shaft is advanced a predetermined time. 9. The dishwasher according to claim 8 , wherein the slide device moves the slide shaft backward after a certain period of time after the slide shaft has moved forward for a certain period of time. The dishwasher / dryer according to claim 8 or 9 , wherein a limiter detector is provided in the slide device, and the slide shaft is stopped when the limiter detector detects the backward movement of the slide shaft. The dishwasher / dryer according to claim 10, wherein when a limiter detector provided in the slide device does not detect the backward movement of the slide shaft, the operation is stopped after a predetermined time has elapsed from the start of the backward movement. When the limiter detector provided in the slide device does not detect the forward movement of the slide shaft a plurality of times, or when the limiter detector detects that a certain time has elapsed after the front and rear slide shafts have moved backward, The dishwasher according to claim 10 , wherein if it is not detected even after repeated times, it is determined as abnormal and the operation is stopped.

Images