JP2005334360A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher for which the size of a washing tub can be selected and water is not accumulated in the connection part of the washing tub. <P>SOLUTION: The dishwasher comprises the washing tub for washing dishes and a jetting nozzle provided inside the washing tub for jetting washing water toward dishes. The washing tub has an upper frame body, a middle frame body 22 whose upper end part is connected to the upper frame body and lower end part is provided with a U-shaped part 22a bent outward, and a bottom body 23 having a raised part 23a provided with a receiving part 23f for receiving the U-shaped part 22a of the middle frame body 22 and an engaging part 23e for engaging the tip part of the U-shaped part 22a at the peripheral edge part of an upper end. The receiving part 23f of the bottom body 23 is provided with a plurality of water recovery parts 23b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dishwasher for cleaning dishes and the like by jetting cleaning water, and more particularly to a dishwasher with an improved structure of a washing tank.

  A conventional dishwasher comprises a washing tank for storing tableware by a resin bottom component member and a metal washing tank body provided on the bottom component member, and the bottom component member has a peripheral edge thereof. The upper rising portion is integrally formed, and a receiving portion is formed inside the rising portion, and the cleaning tank body is formed with a U-shaped portion bent outward at the lower end thereof. A U-shaped part is inserted into the receiving part from above, and an engaging part that engages with the U-shaped part by its own elasticity is formed on the inner surface of the rising part (for example, , See Patent Document 1).

Japanese Patent No. 3109511 (paragraphs 0012 to 0022, FIGS. 1 and 2)

  The conventional dishwasher is composed of a resin bottom component and a metal cleaning tank body provided on the bottom component, simplifying the overall configuration of the product. There is a problem in that water accumulates in the inner receiving portion of the rising portion of the joint portion between the tank body and the bottom component member, the water rots and a bad odor is generated.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a dishwasher in which the size of the washing tank can be selected so that water does not accumulate in the coupling part of the washing tank. And

  The dishwasher of the present invention includes a washing tank for washing dishes, and an injection nozzle provided in the washing tank for injecting washing water toward the dishes, and the washing tank includes an upper frame body. The upper frame is coupled to the upper frame and the lower frame has a U-shaped part bent outward, and the upper frame receives the U-shaped part of the middle frame at the peripheral edge. A bottom body having a rising part provided with a receiving part and an engaging part for engaging the tip part of the U-shaped part, and a plurality of water recovery parts are provided in the receiving part of the bottom body It is.

  According to the present invention, the cleaning tank includes an upper frame, a middle frame having a U-shaped portion with an upper end coupled to the upper frame and bent outward at a lower end, and a peripheral edge of the upper end. And a bottom body having a rising part provided with a receiving part for receiving the U-shaped part of the middle frame body and an engaging part for engaging a tip part of the U-shaped part. Since the receiving part is provided with a plurality of water recovery parts, the size of the washing tank can be selected, and water can be prevented from collecting in the coupling part of the washing tank.

  FIG. 1 is a sectional view of a drawer type dishwasher according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, FIG. 3 is a perspective view of the washing tank, and FIG. FIG. 5 is an essential part cross-sectional view showing the assembly of the bottom body and the inside of the cleaning tank.

  In FIG. 1, a washing tank 3 provided inside a washing tank frame 2 that is supported by the tableware washing machine body 1 so as to be movable in the front-rear direction and has an opening on the upper side, and a lid for closing the opening of the washing tank 3 4 is provided, and a hot water storage tank 5 having a heater 6 inside and a hot water supply pump 7 below is provided outside the cleaning tank 3. A water supply pipe 19 is connected between the hot water storage tank 5 and the water supply valve 15, a hot water supply pipe A 18 and a hot water supply pipe B 17 are connected to the hot water supply pump 7, and a communication section for supplying hot water from the hot water storage tank 5 to the washing tank 3 (see FIG. Not shown).

  Further, an injection nozzle 8 for injecting cleaning water to the lower part of the cleaning tank 3, a sub-injection nozzle 9, a hot water reservoir 10 for storing the cleaned cleaning water, and an injection / drainage pump 11 for sending the cleaning water to the injection nozzle 8 and draining it. The water discharge pipe 11 and the injection nozzle 8 are connected by a water pipe 12, the water discharge pump 11 and the sub-injection nozzle 9 are connected by a water supply pipe 13, and a water reservoir 10 in which a filter 20 is provided at the opening. The jet / drain pump 11 is connected by a water pipe 14, and the drain pipe 16 is connected to the jet / drain pump 11.

Next, the structure of the washing tank 3 will be described with reference to FIGS. FIG. 3A is a perspective view of the cleaning tank, and FIG. 3A is an exploded perspective view of the cleaning tank.
The cleaning tank 3 includes an upper frame body 21, a bottom body 23, and an intermediate frame body 22 coupled between the upper frame body 21 and the bottom body 23. The upper frame body 21 and the bottom body 23 are made of plastic. The inner frame 22 is integrally molded and uses stainless steel.

The upper frame 21 is provided with a groove 21 a for fixing the upper frame body 21 together with the seal packing 25 on the lower surface side of the lower frame side, and the inner frame 22 has an inner wall surface of the bottom body 23. A U-shaped portion 22a that is formed to be the same as the inner wall surface and is bent outward is provided at the lower portion.
The bottom body 23 has a bottomed cylindrical shape, and is provided with a hot water reservoir 10, a dish basket receiving portion 23 g, and the like at the bottom, and a rising portion 23 a provided with a stepped portion 23 d toward the outside at the upper peripheral edge. The rising portion 23a includes a rib 23c formed inside the stepped portion 23d and a stepped portion 23d. The receiving portion 23f receives the U-shaped portion 22a of the middle frame body 22 and the tip end portion of the U-shaped portion 22a. A convex engaging portion 23e is provided on the inner side of the distal end portion. Further, a plurality of water recovery portions 23b for recovering water in the cleaning tank 3 are provided so that the cleaning water does not collect in the receiving portion 23f. It is the shape of a notch provided to be inclined in the direction.

Next, the assembly of the cleaning tank 3 will be described with reference to FIGS.
First, the middle frame 22 having a size determined according to the size of the cleaning tank 3 is selected, and the U-shaped portion 22a of the middle frame 22 is changed to the inner surface of the rising portion 23a at the upper peripheral edge of the bottom body 23. , The top of the U-shaped portion 22a contacts the receiving portion 23f of the bottom body 23, and the tip of the U-shaped portion 22a is engaged with the engaging portion 23e by the elasticity of the U-shaped portion 22a. As a result, the middle frame body 22 and the bottom body 23 are joined.
Next, the upper part of the middle frame 22 is inserted into the groove 21a on the lower surface side of the upper frame 21, sealed with a seal packing 25, and fixed with screws. In this state, the water recovery part 23b is exposed on the inner surface of the cleaning tank 3 as shown in FIG.

  Next, the operation of the dishwasher will be described with reference to FIG. First, for example, when the power is turned on with an operation panel (not shown), the water supply valve 15 is opened and water is supplied to the hot water storage tank 5 through the water supply pipe 19. When the set water level is reached, the water supply valve 15 is closed and heated by the water heater 6, and when the appropriate temperature is reached, the energization of the heater 6 is stopped, hot water is taken into the hot water supply pump 7 via the hot water supply pipe A17, and the hot water supply pipe B18 and hot water storage. Hot water is supplied to the washing tank 3 through a communication port (not shown) between the tank 5, the hot water storage tank 5 and the washing tank 3.

Next, the hot water stored in the washing tub 3 by the jet / drainage pump 11 is jetted from the jet nozzle 8 to the dishes as washing water from the hot water reservoir 10. The sprayed washing water gathers in the hot water reservoir 10 and is sprayed from the spray nozzle 8 toward the dishes by the spray / drainage pump 11. In this way, the dishes are washed while the washing water circulates.
When cleaning starts, the water supply valve 15 of the hot water storage tank 5 opens in parallel, and when the hot water storage tank 5 is supplied with water and reaches the set water level, the water supply valve 22 is closed and heated by the heater 6 until the temperature becomes suitable for rinsing. .

  Next, when the cleaning is completed, the jet / drainage pump 11 starts the draining operation from the spraying operation, and the cleaning water in the cleaning tank 3 is drained. When the drainage is completed, the jet / drainage pump 11 is stopped and the hot water supply pump 7 is operated to supply hot water from the hot water storage tank 5 to the washing tank 3. And the operation | movement sprayed toward the tableware from the injection nozzle 8 as rinse water from the hot water sump part 10 by the injection drainage combined use pump 11 is repeated, and when the rinse is complete | finished, the injection drainage combined use pump 11 is the operation | movement of drainage from injection operation. In addition, the cleaning water in the cleaning tank 3 is drained.

  Next, although not shown, outside air is sent to the hot water storage tank 5 without water by a blowing means, heated by a heater 6 and heated by the pressure of the blowing means to the washing tank 3 through the communication hole, Dry the food. By this drying, the inside of the washing tank is also dried, and the middle frame body 22 and the bottom body 23 enter from the water recovery part 23b of the bottom body 23 at the joint portion, and the receiving portion 23f of the bottom body 23 and the middle frame body 22 The U-shaped portion 22a and the like are dried.

As described above, the size of the cleaning tank 3 can be selected by changing the size of the inner frame 22, and the water that has entered the coupling portion of the cleaning tank is recovered to the cleaning tank 3 from the recovery port 23b. At the same time, heated air can enter through the recovery port 23b and be dried in the washing and drying process, so that water does not accumulate and bad odor due to water decay can be prevented.
Further, since the water recovery portion 13b is formed in a notch shape inclined on the stepped portion 23d and the rib 23, it is possible to facilitate molding.
In addition, since the tableware basket receiving portion is integrally provided on the bottom body 23, the number of parts can be reduced.
In addition, although the drawer type dishwasher was shown in embodiment, the same effect can be acquired also with a vertical type dishwasher.

These are sectional drawings of the dishwasher of embodiment concerning this invention. It is the elements on larger scale of FIG. These are the perspective views of the washing tank of the dishwasher of embodiment concerning this invention. These are the principal part expansion perspective views of the bottom body of the dishwasher of embodiment concerning this invention. These are the fragmentary sectional views which show the assembly of the bottom body and the inside of the washing tank of the dishwasher of embodiment concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dishwasher main body, 2 washing tank frame, 3 washing tank, 4 lid part, 8 injection nozzle, 21 upper frame, 22 middle frame, 22a U-shaped part, 23 bottom body, 23a rising part, 23a rising Part, 23b water recovery part, 23c rib, 23d step part, 23e engaging part, 23f receiving part.

Claims (2)

A washing tank for washing dishes,
An injection nozzle that is provided inside the cleaning tank and injects cleaning water toward the dishes;
With
The washing tank is
An upper frame,
A middle frame body having a U-shaped portion with an upper end portion coupled to the upper frame body and bent outward at a lower end portion;
A bottom body having a rising portion provided with a receiving portion that receives the U-shaped portion of the middle frame body and an engaging portion that engages a distal end portion of the U-shaped portion at a peripheral edge of an upper end;
With
A dishwasher comprising a plurality of water recovery portions in the receiving portion of the bottom body. The rising portion is formed so as to rise by providing a stepped portion outward from the periphery of the bottom body, and the receiving portion is composed of the stepped portion and a rib formed inside the stepped portion, and the water recovery portion is connected to the stepped portion. 2. A dishwasher according to claim 1, wherein the dish washer is provided with a notch shape inclined on the rib.

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