JP2005261624A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher capable of inhibiting forward blow-out of steam, improving the decline of usability, and controlling the quantity of heat emission when a door is raised to open a washing chamber. <P>SOLUTION: The dishwasher 1 comprises a back panel 7 erected in the rear of a body 2, a washing chamber 3 formed in an upper part of the body 2 in front of the back panel 7, and a box-shaped door 6 supported in a guide member 13 of the back panel 7 to be movable upward/downward for opening/closing the washing chamber 3. The dishwasher 1 also has a closing panel 12 for covering the back surface of the door 6. The closing panel 12 constitutes a ventilation part 12A with a prescribed size between the closing panel and the back panel 7 with the door 6 in the raised state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dishwasher provided with a washing chamber formed in an upper portion of a main body and a door that is supported so as to be movable in the vertical direction with respect to the main body and opens and closes the washing chamber.

  Conventionally, this type of dishwasher has a washing nozzle and a rinsing nozzle that are rotatably disposed above and below a washing chamber formed in the upper part of the main body, and wash and rinse objects to be washed such as a dish accommodated between them. (Refer to patent document 1).

  A back plate is erected on the rear part of the main body of the dishwasher, and a washing chamber is defined on the front side of the back plate and positioned on the upper portion of the main body. The upper surface, front surface, and left and right side surfaces of the cleaning chamber are opened and closed by a box-shaped door. This door is supported by guide members (rails) mounted on both sides of the front of the back plate so that the rear part of each side can be moved up and down, and the door is lowered to close the cleaning chamber. The front and left and right side surfaces of the cleaning chamber are opened in a state where the water is raised.

  On the other hand, in the dishwasher, high temperature washing water and rinsing water are used in the washing process and the rinsing process of the object to be washed in order to increase the washing effect and the rinsing effect. Therefore, when the door is raised after the cleaning of the object to be cleaned and the front surface and the left and right side surfaces of the cleaning chamber are opened, steam accumulated in the cleaning chamber is discharged to the outside all at once. At this time, in the cleaning machine, since the door is configured in a box shape with the upper surface and all the side surfaces closed, steam in the cleaning chamber is mainly discharged from the front surface where the operator stands, There was a problem that the environment deteriorated.

  Therefore, in order to improve the deterioration of the working environment, it is conceivable to configure the door 101 in a box shape with the rear surface and the lower surface opened as in the dishwasher 100 shown in FIG. In such a configuration, when the door 101 is raised after the cleaning operation is finished, the front surface and the left and right side surfaces of the cleaning chamber 102 are opened, and the rear surface of the door 101 is separated from the back plate 104 of the main body 103, thereby the door 101. The rear surface is opened between the guide members 105 and 105.

Therefore, the steam in the cleaning chamber 102 is mainly discharged from the rear surface of the door 101, and the steam discharged from the front surface can be suppressed, thereby improving the work environment.
JP-A-10-248786

  However, in the dishwasher 100, the steam in the cleaning chamber 102 is almost discharged to the outside from the rear surface of the door 101, the front surface and the left and right side surfaces of the cleaning chamber 102 due to the rise of the door 101. Compared with this, the amount of heat radiation in the cleaning chamber 102 increases. This is because the amount of heat remaining in the previous cleaning chamber 102 is reduced particularly when the cleaning operation is continuously performed, and thus the temperature of the cleaning water contributing to the next cleaning operation is lowered. Become. Therefore, even if the cleaning operation is performed continuously, the previous heat quantity cannot be used. Therefore, a large amount of energy is required to raise the temperature in the cleaning chamber 102 and the cleaning water each time the cleaning operation is performed. Was necessary.

  The dishwasher of the present invention is supported by a back plate erected at the rear of the main body, a cleaning chamber formed in the upper part of the main body on the front side of the back plate, and a back plate rail so as to be movable up and down. And a box-shaped door that opens and closes, and includes a closing plate that covers the back of the door, and the closing plate forms a ventilation portion of a predetermined dimension between the door and the back plate. Is.

  In the dishwasher according to a second aspect of the present invention, in the above invention, the ventilation portion has a size sufficient to prevent the steam in the cleaning chamber from moving forward when the door is raised.

  A dishwasher according to a third aspect of the present invention is the dishwasher according to the third aspect of the present invention, wherein the closing plate is a folding type, folded when the door is lowered, and spreads when the door is lifted to cover the back surface of the door.

  In the present invention, a back plate erected at the rear of the main body, a cleaning chamber formed on the upper portion of the main body on the front side of the back plate, and a box-like shape that is supported by the back plate rail so as to be movable up and down and opens and closes the cleaning chamber In the dishwasher equipped with the door, the door is provided with a closing plate that covers the back of the door, and this closing plate constitutes a ventilation part of a predetermined dimension between the door and the back plate. Further, the vent portion is made to have a size sufficient to prevent the steam in the cleaning chamber from moving forward when the door is lifted, thereby preventing the steam from flowing forward. It will be possible to suppress the amount of steam flowing out from.

  As a result, while preventing deterioration of the operator's usability, it is possible to suppress the amount of heat released and contribute to energy saving.

  Further, if the closing plate is foldable as in claim 3 and is folded when the door is lowered and spreads when the door is lifted to cover the back of the door, the blocking plate interferes with piping in the cleaning chamber. There is nothing to do.

  The present invention has been made to solve the conventional technical problem, and when the door is raised and the cleaning chamber is opened, the outflow of steam forward is suppressed and the deterioration of usability is improved. It is possible to provide a dishwasher that can reduce the amount of heat released. Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a structural explanatory view of the dishwasher 1 of the present invention, FIG. 2 is a side view of the dishwasher 1 with the door 6 raised, and FIG. 3 is a longitudinal front view of FIG.

  The dishwasher 1 includes a main body 2 and a box-like door 6 supported above the main body 2 so as to be movable up and down. A back plate 7 is erected on the rear portion of the main body 2, and a cleaning chamber 3 is defined on the front side of the back plate 7 so as to be located on the upper portion of the main body 2. The upper surface, front and rear surfaces, and left and right side surfaces of the cleaning chamber 3 are opened and closed by a box-shaped door 6.

  The door 6 is supported by guide members (rails) 13 and 13 attached vertically on both sides of the front surface of the back plate 7 so that the rear portions of both sides can be moved up and down. The cleaning chamber 3 is closed, and the front and left and right side surfaces of the cleaning chamber 3 are opened with the door 6 raised. That is, the door 6 is supported by the guide member 13 so as to be movable up and down, and is provided to open and close the cleaning chamber 3. The door 6 is provided with a door switch (not shown) for detecting opening and closing of the door 6.

  On the upper part of the guide members 13, 13, a handle 14 is pivotally supported at a pivot point at the rear end thereof. The handle 14 has a substantially U-shape as a whole consisting of a front side and both side sides, and is located outside the front surface and the left and right surfaces of the door 6.

  On the other hand, a connecting member 15 is provided outside both side surfaces in front of the center of the door 6, and a lower end of the connecting member 15 is pivotally supported by the door 6. The upper end of the connecting member 15 is pivotally connected to the middle part of the left and right sides of the handle 14, and the handle 14 is in a state where the front portion of the handle 14 is inclined low with the door 6 closed. 15 is in a substantially upright state, and the handle 14 is in a state in which the front portion thereof is highly inclined with the door 6 opened, and the connecting member 15 is in a substantially upright state.

  On the other hand, the door 6 is composed of a box-like member having openings on the lower side and the rear side as described above, and a closing plate 12 covering the back surface is provided on the back surface of the door 6. The closing plate 12 forms a ventilation portion 12A having a predetermined size with the upper end of the back plate 7 in a state where the door 6 is lifted by the guide member 13, so that the closing plate 12 is higher than the lower end of the door 6 by a predetermined size. It is only formed.

  On the other hand, an upper cleaning arm 8 having a plurality of cleaning nozzles 8A for spraying cleaning water downward is rotatably disposed above the cleaning chamber 3. An upper rinse arm 9 that rotates concentrically with the upper cleaning arm 8 is disposed slightly below the upper cleaning arm 8. The upper rinsing arm 9 has a plurality of rinsing nozzles (not shown) for injecting rinsing water downward. A lower cleaning arm 10 having a plurality of cleaning nozzles 10A for jetting cleaning water upward is rotatably disposed in the lower portion of the cleaning chamber 3. A lower rinsing arm 11 having a plurality of rinsing nozzles (not shown) for jetting rinsing water upward is disposed slightly above the lower cleaning arm 10 so as to be rotatable concentrically with the lower cleaning arm 10.

  Below the cleaning chamber 3, a relatively large cleaning water tank 16 is provided which is separated from the cleaning chamber 3 by a filter (not shown). An overflow pipe 17 is erected in the washing water tank 16 and opens into the washing water tank 16 at a position where the washing water surface of the washing water tank 16 is regulated to a predetermined water level. In addition, a cleaning water tank water level sensor (not shown) for detecting the water level in the cleaning water tank 16 is provided in the cleaning water tank 16. A washing water tank heater (not shown) is accommodated in the washing water tank 16 in order to maintain the washing water at a predetermined temperature. Further, in order to detect the water temperature in the washing water tank 16, a washing water tank temperature sensor (not shown) is inserted from the outer wall below the water level. The cleaning water stored in the cleaning water tank 16 contains a detergent. The cleaning water is sucked and pumped by the cleaning water pump 18, and the upper and lower cleaning nozzles are discharged via the discharge pipe 19 and the cleaning pipe 20. It feeds to the upper and lower cleaning arms 8 and 10 where 8A and 10A are formed.

  On the other hand, a rinsing water tank 22 for storing high-temperature rinse water at + 85 ° C. is disposed at the lower part of the main body 2. The stored water in the rinsing water tank 22 is pumped by a rinsing water pump 23 and is fed via a rinsing pipe 24 to upper and lower rinsing arms 9 and 11 in which upper and lower rinsing nozzles are formed. An overflow pipe (not shown) for regulating the water level is connected to the rinse water tank 22, and a rinse water tank water level (not shown) for detecting the water level in the rinse water tank 22 is connected to the rinse water tank 22. A sensor is provided.

  A rinse water tank heater 28 is accommodated in the rinse water tank 22 in order to heat the stored water to the predetermined temperature. Furthermore, in order to detect the water temperature in the rinse water tank 22, a rinse water tank temperature sensor (not shown) is inserted from the outer wall below the water level. The rinsing water tank 22 is supplied with rinsing water from an external water pipe (not shown) through a water supply piping 31 provided with a water supply electromagnetic valve 30, and is also supplied to the rinsing water tank 22 by the water supply electromagnetic valve 30. Water supply control is performed.

  The washing water tank water level sensor, the washing water tank temperature sensor, the rinsing water tank water level sensor, the rinsing water tank temperature sensor, and the door switch as described above are connected to the input side of the microcomputer as the control means. The washing water pump 18, the rinsing water pump 23, the rinsing water tank heater, the rinsing water tank heater 28, the water supply electromagnetic valve 30, and the output side of the microcomputer are connected to the microcomputer. It is assumed that it is controlled by the microcomputer.

  With the above configuration, the operation of the dishwasher 1 of the present invention will be described. First, when a power switch provided on an operation panel (not shown) of the dishwasher 1 is turned on, the control means opens the water supply electromagnetic valve 30 and supplies rinse water into the rinse water tank 22. This rinse water is stored in the rinse water tank 22. Then, the rinsing water pump 23 is operated by the control means so that the rinsing water in the rinsing water tank 22 is gradually pumped up by the rinsing water pump 23 and is pumped to the upper and lower rinsing nozzles 9 and 11 through the rinsing pipe 24. .

  The pumped rinse water is discharged from the upper and lower rinse nozzles and stored in the lower wash water tank 16. When each of the tanks 16 and 22 reaches a predetermined water level based on the output of the water level sensor, the control means closes the water supply electromagnetic valve 30 and energizes the washing water tank heater and the rinsing water tank heater 28. Heat until the water temperature in 22 reaches a predetermined temperature.

  Thereafter, the rinse water in the rinse water tank 22 is maintained at + 85 ° C. by the action of the rinse water tank temperature sensor, and the wash water in the wash water tank 16 is maintained at + 65 ° C. by the action of the wash water tank temperature sensor. In addition, a detergent is introduced into the cleaning water tank 16 so as to obtain an appropriate concentration.

  Thereafter, when the operator places the cleaning rack 5 on which the object to be cleaned 4 such as a dish is placed in the cleaning chamber 3, the door 6 is lowered and closed, and when the control means detects the closing of the door switch, the control is performed. The means operates the wash water pump 18. As a result, the cleaning water is pumped to the upper and lower cleaning arms 8 and 10, and the dirt adhering to the object to be cleaned 4 is washed away by the cleaning water sprayed from the cleaning nozzles 8A and 10A.

  The washing water sprayed as described above falls into the washing water tank 16 below, is again sucked into the washing water pump 18, and thereafter circulates through the same route. After performing this operation for a preset time set in advance, the control means stops the operation of the cleaning water pump 18 and ends the cleaning process.

  Next, the control means moves to the rinsing step, operates the rinsing water pump 23, and pumps high temperature rinsing water at + 85 ° C. to the upper and lower rinsing arms 9 and 11. Thereby, the detergent and washing water adhering to the surface of the article to be cleaned 4 are rinsed off by the rinsing water sprayed from the rinsing nozzle.

  After performing this work for a preset time set in advance, the control means stops the operation of the rinse water pump 23 and sounds a buzzer (not shown) to notify that the cleaning work has been completed. The rinse water falls into the lower wash water tank 16 and is reused as wash water in the next step.

  The rinsing water in the rinsing water tank 22 decreases when rinsing is performed. Therefore, based on the low water level detection by the rinse water tank water level sensor, the control means opens the water supply electromagnetic valve 30 to supply water. And based on the full water level detection by the rinse water tank water level sensor, a control means closes the water supply solenoid valve 30, and stops water supply.

  Then, after the cleaning operation is completed, the operator raises the door 6, opens the front surface and the left and right side surfaces of the cleaning chamber 3, and takes out the cleaning rack 5 accommodated in the cleaning chamber 3. At this time, with the operator raising the door 6, a ventilation portion 12A having a predetermined dimension is formed between the back plate 7 and the back plate 7 on the back surface of the door 6 by the closing plate 12. The steam filled in the cleaning chamber 3 flows out from the back of the door 6. In particular, in the present embodiment, the ventilation portion 12A is configured to have a size sufficient to prevent the steam in the cleaning chamber 3 from moving forward when the door 6 is lifted, thereby moving forward. The amount of steam flowing out from the back can be suppressed while preventing the steam from flowing out.

  Thereby, since it can suppress that a steam flows out from the front of the dishwasher 1 used as an operator's standing position, it can prevent deterioration of usability, and in addition to this, the amount of steam flowing out Therefore, the amount of heat released can be suppressed. Therefore, it is possible to avoid the disadvantage that the temperature of the cleaning water in the cleaning water tank 16 decreases due to the release of a large amount of heat, which can contribute to energy saving.

  In the above embodiment, the closing plate 12 provided on the back surface of the door 6 may be foldable like the closing plate 33 shown in FIG. That is, when the door 6 is lowered, it is folded forward like a closing plate 33 indicated by a dotted line, and when the door 6 is raised, it is spread like a closing plate 33 indicated by a solid line. It is set as the structure which covers the back surface. Note that the lower end of the closing plate 33 also forms a ventilation portion 12A having a predetermined size between the upper end of the back plate 7 with the door 6 raised by the guide member 13 in the same manner as the closing plate 12 of the above embodiment. Therefore, it is assumed that it is formed only up to a position higher than the lower end of the door 6 by a predetermined dimension.

  As a result, the closing plate 33 is folded when the door 6 is lowered and spreads when the door 6 is lifted to cover the back surface of the door 6 so that the closing plate 33 interferes with piping in the cleaning chamber 3. Nothing will happen.

It is structure explanatory drawing of the dishwasher of this invention. It is a side view of the dishwasher of the state which raised the door. FIG. 3 is a front view of FIG. 2. It is a side view of the dishwasher of the state which raised the door of the other Example. It is a side view of the tableware washing machine of the state where the conventional door was raised.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tableware washing machine 2 Main body 3 Washing room 6 Door 7 Back board 12, 33 Closure board 12A Ventilation part 13 Guide member 14 Handle 15 Connecting member 16 Washing water tank 22 Rinsing water tank

Claims (3)

A back plate erected at the rear of the main body, a cleaning chamber formed on the upper portion of the main body on the front side of the back plate, and a box-like shape that is supported by the rail of the back plate so as to be movable up and down and opens and closes the cleaning chamber In a dishwasher with a door,
A dishwasher comprising a closing plate that covers a rear surface of the door, and the closing plate forms a ventilation portion of a predetermined size with the back plate in a state where the door is raised.   2. The dishwasher according to claim 1, wherein the ventilation portion has a size sufficient to prevent steam in the cleaning chamber from moving forward when the door is raised.   The dishwasher according to claim 1 or 2, wherein the closing plate is foldable, and is folded when the door is lowered and spreads when the door is lifted to cover the back surface of the door.

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