TWI551258B - Dishwashing machine - Google Patents

Description

dishwasher

The present invention relates to a dishwasher having a novel system for dispensing wash water to an item to be cleaned.

Dishwashers are machines designed to clean, wash, and, at some point, dry items such as plates, pans, or other kitchen items. They typically comprise a body defining a cleaning chamber openable on one side, a closed door sealing the open side of the chamber, and one or more shelves disposed within the chamber for stacking To receive and support the item to be cleaned.

Some dishwashers have two cleaning areas that are separated and have different hot water and detergent supplies, that is, one area for fragile dishes and the other area for pans and kitchen utensils. .

Usually the dishwasher provides several working procedures, which are different in the temperature of the water used and the length of the cleaning cycle.

For example, the patent documents US Pat. No. 3,718,149, EP 1752081, and EP 1933689 are representative of these conventional techniques.

In the case of use, the operation of a dishwasher is based on a system for forcibly distributing water to the item to be cleaned, the water being mixed with the cleaning agent during the washing step, and the washing step of the object Used alone.

According to a general mode, the object to be cleaned is placed on the frame of the cleaning chamber of the machine, and the washing water is substantially vertically oriented. The directional spray nozzles are delivered from the bottom up and/or from the top down onto the article. The spray nozzles can also be carried on the rotatable arms, but since they are supplied with a relatively low pressure water flow, their spray water towards the object is relatively weak and is only provided in the first washing step. The detergent is dispensed and emulsified and the residual cleaning agent is removed from the article and carried away in the second cleaning step. Practically, the degreasing and soil removal on the surface of the article is essentially achieved by the action of a cleaning agent; the water is essentially used to dispense the cleaning agent and to constantly remove material removed from the cleaning surface.

Furthermore, in conventional dishwashers, the dispensing of the washing water via the spray nozzles is in principle applied in the same way to the objects placed on the frame, there is no possibility that water can be saved, in particular to distinguish those that may be needed Specially and more intensive cleaning of potentially dirty objects.

An object of the present invention is to provide a dishwasher which can maintain the structure and overall size of a conventional dishwasher, but can directly and deeply process the surface of the object to be cleaned, and further saves water and The advantages of detergents and the time to shorten the cleaning cycle.

Another object of the present invention is to provide a dishwasher in which the washing water is used in the form of a pressurized jet for itself to advantageously produce a strong effect, which can be defined as a "mechanical" effect. The most powerful dirt can be removed from the surface of the object to be cleaned, thereby reducing the amount of detergent required to remove the oil.

Another object of the present invention is to provide a dishwasher that is organized and managed in conjunction with an existing water distribution system to enable targeted and selective cleaning of the dirtiest surface of the item to be cleaned.

It is still another object of the present invention to provide a dishwasher that can be configured to air dry the article after cleaning.

These objects and advantages are achieved by a dishwasher according to the preamble of claim 1 of the scope of the patent application, wherein the item to be cleaned is supported and configured to be sprayed by a water jet output from a nozzle supplied with relatively high pressure water. Performing individual and targeted cleaning, and wherein the nozzle is oriented in a direction substantially perpendicular to the surface of the object to be cleaned and is disposed in the height direction between the objects and/or relative to the object On the pipeline.

In fact, the nozzle capable of generating a pressurized water jet is disposed between and movable between rows of dishes, and is movable relative to a surface or grille carrying a pan and the like. .

Alternatively, the nozzle capable of generating a pressurized water jet can be rotated at the level of each article, at least in the area of the cleaning chamber where the pan to be cleaned is placed.

The structure can also perform more intense cleaning of the object through the pressurized water jet, and the cleaning action can be localized and part of the object through proper planning of the working cycle of the machine and the water supply to the nozzle. More specific calibration than other objects.

As shown, the dishwasher 10 includes a machine body or housing 11 defining a cleaning chamber 12 that is accessible through an opening that is sealingly closed by a door 13. A means for sliding/exiting toward the access opening is provided in the cleaning chamber 12, including a support member 14 designed to receive and support the dishes 15, and at least one pan or other container 17 to be cleaned for placement. Formed thereon is the surface 16 of the grid. The door 13 itself may be provided with a transparent window 13' for viewing the interior of the machine.

The support members 14 of the dishes 15 may be disposed to be capable of carrying the dishes upright, and are arranged in a row and formed in one or more layers in the depth direction of the cleaning chamber 12, and are individually disposed in a parallel spaced relationship. As shown in Figure 2.

Alternatively, the support members 14 of the dishes may also be constructed in a group and also capable of carrying pairs of dishes 15 arranged back to back upright, i.e. as they are shown in the other figures, with their front faces facing the opposite The direction. Preferably, the surface 16 for the pan and/or other container 17 in the cleaning chamber 12 is disposed beneath the support member 14 for dishes.

At the bottom of its body 11, the dishwasher has a compartment 18 designed to provide a tank not shown for containing wash water and means for heating and dispensing water into the wash chamber. Although not shown, the door can be provided with a device for loading detergent cleaners, programming systems, and the like.

According to an embodiment of the present invention, as shown in Figures 2-5, the water is distributed to the object to be cleaned by a water pipe 20 extending at a height which is preferably horizontal and along the row of the dishes 15 and at least one relative to the load. The pipe 20 is formed by another water pipe 21 provided on the surface 16 of the pan or the container 17 The nozzles 21 are all provided with nozzles 22 for conveying pressurized water jets directed toward the respective articles to be cleaned in a substantially vertical direction.

In detail, the distribution lines 20 at the height of the 15 rows of dishes extend in the lateral direction into the cleaning chamber 12, and each of the tubes is positioned in each column as shown in FIG. Between adjacent dishes in the dish, or as shown in Figures 3-5, between adjacent pairs of dishes. These lines 20 are also movable, in the case of the figure, moving in the height direction along the arrow F, so that the water jets sequentially exiting their nozzles 22 will cover the entire surface of the item to be cleaned.

For their movement in the height direction, the line 20 can be conveniently guided and controlled along the side wall of the machine body 11 and connected to the appropriate hose with its inlet to enable the line to be made The movement.

For example, if there are three dishes 15 on each column, they can be provided with three distribution lines 20 with their nozzles 22 facing the front of the dish, and a possible fourth line with nozzles. Facing the back of the dish at the rear, as shown in Figure 2. If there are three pairs of dishes 15 in each column, there can be four distribution lines with their nozzles facing the front of all dishes, as shown in Figures 3-5, and in this case, A (not shown) line and water jet are provided for cleaning the back of the pair of dishes.

As for the surface 16 of the remaining pan and/or container 17, the at least one conduit 21 cooperating therewith can be horizontally guided and displaced parallel to the surface or grid along the arrow G, to correlate Nozzle 23 facing Above.

If desired, a nozzle may also be provided at the top of the cleaning chamber - not shown - to create a water jet that is sprayed from top to bottom and located between the items to be treated.

In another embodiment of the invention, as shown in Fig. 6, the dispensing of the wash water at least at the level of the dish 20 is by a system 121 having one or more nozzles 122 rotatable about an axis. In effect, these nozzles also face the dish in a substantially vertical direction without affecting its configuration.

In either case, the pressure of the wash water jet delivered via the nozzles 22, 23 or the rotary nozzles 122 of the distribution lines 20, 21 can be adjusted according to the dirt to be removed from the article, and thus is Adjust according to the strength of the cleaning. In general, the pressure of water is in the range of 2 to 5 bar. Obviously, the higher the pressure of the water jet, the more effective it is for the "mechanical" action of the water on the surface to be cleaned, but this effect can also be achieved by the cleaning action of the washing water each time. Help with it to further enhance it.

Thus, overall, when the water at the height of the dish is dispensed by the nozzle 22 via line 20, all of these lines will be able to move in a simultaneous or synchronized manner, or a portion of the tube. The roads can be moved relative to other conduits in an independent and/or staggered manner to achieve selective and differential cleaning of the article. Furthermore, it is also possible to rotate at least a portion of the nozzles in each of the water distribution lines 20, 21, thereby further increasing the utility of the water jet. In addition, one or more distribution lines 20, The nozzles 22, 23 in the 21 can also be arranged in groups, and the washing water is supplied in such a manner that the nozzles of each group can be selectively and targeted in the case of being independent of the other groups of nozzles. The way to use it.

Similarly, even when the washing water is dispensed via the rotary nozzle 122, they can all be simultaneously or selectively supplied with water depending on the position and quality of the article to be treated.

In practical applications, the aforementioned machines can be programmed and managed electronically for a wider variety of general operations for the cleaning and washing cycles of the items to be treated when properly supplied with clean water and clean water.

As for the cleaning step, the programming of the machine can be designed to keep the pressurized water jet moving toward, residing, and moving longer over the area considered to be the dirtiest in the item to be cleaned.

In fact, this objective view of the object can be achieved by manually or automatically controlling the localized supply of the water jet by continuously selecting the position, amount, pressure and action of the water jet.

In addition, the cleaning chamber 12 of the machine can also be divided and virtually divided into several areas, which can be displayed and viewed on the window of the door, while the water jet can limit the number of them and only in the cleaning chamber. Start them in one or some areas, and exclude others, and continue to plan and manage. This can be achieved by calibrating areas that are occupied by objects that require more strength and deeper cleaning than others in any area of the chamber. It is advantageous to avoid water and rinsing with detergents anytime, anywhere. Polyester Water, and unnecessary waste of energy.

After cleaning and washing, the front can be a relatively strong and localized cleaning. The object can be supplied to the same machine through an auto-correlated generator and with the help of an electric heater installed in the processing chamber. Dry it with air. The drying air can be delivered and distributed into the processing chamber through a fixed or movable outlet that is independent or connected to the spray line. In this regard, at least a portion of the flushing water can be retained in the tank of the machine, and the drying air can sweep the water for the purpose of causing the moisture carried in the air to condense, and the other In this case, the water is preheated for later reuse in another cleaning cycle.

10‧‧‧Dishwasher

11‧‧‧ body, shell

12‧‧‧cleaning chamber

13‧‧‧

13’‧‧‧ window

14‧‧‧Support

15‧‧‧ dishes

16‧‧‧ surface

17‧‧‧ Container

18‧‧ ‧ compartment

20‧‧‧pipe

21‧‧‧ pipeline

22‧‧‧Nozzles

23‧‧‧Nozzles

121‧‧‧System

122‧‧‧Nozzles

However, other details of the invention can be more clearly understood from the following description, taken in conjunction with the accompanying drawings

Figure 1 shows an outside perspective view of a dishwasher.

Figure 2 shows a schematic cutaway view of the dishwasher in which the dishes are individually placed and supported.

Figure 3 shows a pattern similar to Figure 2, in which the dishes are placed in pairs.

Figure 4 shows a section in the depth direction taken along a vertical plane of the dishwasher of Figure 3.

Figure 5 shows a cross-sectional view taken along arrow A-A in Figure 2.

Fig. 6 is a view schematically showing an arrangement in which the distribution of the washing water is changed with respect to those shown in Figs. 2 to 5.

11‧‧‧ Body or shell

12‧‧‧cleaning chamber

15‧‧‧ dishes

16‧‧‧ surface

17‧‧‧ Container

18‧‧ ‧ compartment

20‧‧‧pipe

21‧‧‧ pipeline

23‧‧‧Nozzles

Claims (12)

A dishwasher comprising: a body (11) defining a cleaning chamber (12) having an access opening, a closing door, and supporting means disposed in the chamber (12) for receiving and Supporting the object to be cleaned, the pipeline (20, 21) for supplying and distributing the cleaning and washing water to the object placed on the supporting device in the chamber, and for programming and setting the washing A system of different duty cycles of a bowl, characterized in that the line (20, 21) for dispensing cleaning and washing water onto the article placed on the support device can be guided at least in the height direction Displaced between and/or relative to the article; wherein the support device of the article to be cleaned comprises a plurality of rows of supports (14) at a first height of the cleaning chamber (12) to a tray for supporting parallel separations, and at least one surface (16) of the form of a grid, located at a second level of the cleaning chamber (12) for supporting the pan or container, and for The pipe (20, 21) for distributing the washing and washing water is provided with nozzles (22, 122, 23) a pressurized water jet for transporting substantially perpendicular to the surface of the article to be cleaned and displaceable relative to the surface; and wherein the conduit (20, 21) for dispensing cleaning and washing water Including a support member (14) that is fitted to the plurality of columns at the first height and can be A first conduit (20) that is displaced in the height direction within the cleaning chamber, and at least one additional conduit (21) that fits over the surface (16) and is at least horizontally displaceable. The dishwasher of claim 1, wherein the first pipe (20) is provided with a plurality of series of nozzles (22, 122), which can generate a substantially horizontal cleaning and washing water jet, and the An additional line (21) is provided with a nozzle that produces a substantially vertical cleaning and flushing water jet. A dishwasher according to claim 1, wherein the support members of the plurality of rows of support members (14) are configured to individually support the dishes in a parallel spaced relationship. The dishwasher of claim 1, wherein the plurality of rows of support members (14) are configured to support pairs of parallel spaced apart dishes disposed in a back-to-back relationship. A dishwasher according to claim 1, wherein each of the lines (20, 21) for dispensing the cleaning and washing water comprises a plurality of spray nozzles (22, 23) that are selectively or simultaneously used. . A dishwasher according to claim 5, wherein at least one or more of the nozzles (22, 23) provided on the conduit (20, 21) are rotatable. A dishwasher according to claim 5, wherein the nozzle (22, 23) is fixed or rotatable about an axis. For example, the dishwasher of the first application of the patent scope, wherein the pipelines can all be moved simultaneously or synchronously, or a part of the pipeline can be Start up independently of each other and/or in an interleaved manner. A dishwasher according to claim 1, wherein a control device is provided for guiding and at least a portion of the water jet selectively resides on a portion of the object to be cleaned. The dishwasher of claim 1, further comprising means for planning a plurality of operating cycles of the machine by selecting the amount and action of the spray water and the pressure of the washing water. A dishwasher according to claim 1, wherein the closed door of the washing chamber defined by the body (11) has a transparent window. A dishwasher according to any one of claims 1 to 11, further comprising a system for drying the article by air after the article is cleaned.