CN101438951A

CN101438951A - Dishwasher with anti-flood safety system

Info

Publication number: CN101438951A
Application number: CNA2008101762933A
Authority: CN
Inventors: E·布里格农
Original assignee: Bitron SpA
Current assignee: Bitron SpA
Priority date: 2007-11-23
Filing date: 2008-11-21
Publication date: 2009-05-27
Also published as: EP2062519A1; KR101582784B1; PL2062519T3; KR20090053744A; EP2062519B1; ITTO20070842A1

Abstract

The dishwasher is provided with an anti-flood safety system which comprises a container (10) for collecting escaped water and a sensor device for detecting a predetermined threshold level reached by the water in said container (10) and for sending a signal when said level is reached. This sensor device includes a radiation emitter (12) and an associated radiation receiver (14).

Description

Be provided with the dish-washing machine of anti-flood safety system

Technical field

The present invention relates to a kind of dish-washing machine that provides anti-flood safety system.

Background technology

According to known technology, such security system comprises container, is used to collect the water of effusion, wherein is equipped with floating member, and when the water in being accumulated in container reached predeterminated level, this floating member can console switch.Then, switch directly or by the timer card comes indirect priming pump again, so that discharge the water that is contained in the washing chamber.

But, this known system can not provide the accuracy that is entirely satisfactory when work, because must be applied so that the power of trigger switch may change in worker's difference scope of relative broad by floating member.And this system is quite huge and expensive.

Summary of the invention

Therefore, the objective of the invention is to overcome the defective of known technology.

According to the present invention, this purpose realizes that by a kind of dish-washing machine that provides anti-flood safety system this anti-flood safety system comprises:

Container is used to collect the water of effusion; And

Sensor device, the water that is used for detecting described container reaches a predetermined threshold levels, and is used for sending signal when reaching described level, and described sensor device comprises radiation transmitter and relevant radiation receiver.

The signal that is produced by sensor device for example can be sound and/or optical warnings signal, or directly or indirectly make by means of PCB (printed circuit board (PCB)) and be used for the signal (this PCB is present in the dish-washing machine usually) of priming pump, so that discharge the water that is contained in the dish-washing machine.

According to the present invention, use the sensor device that transmits and receives based on radiation that gratifying operation accuracy is provided, it is obviously greater than the accuracy that is provided by mechanical system.

Description of drawings

By detailed description below with reference to accompanying drawing (this accompanying drawing provides non-limiting example), will know other advantage of the present invention and feature, in the accompanying drawing:

Fig. 1 is the perspective illustration according to the safety system components of dish-washing machine of the present invention;

Fig. 2 is the sectional perspective view of the security system of the dish-washing machine of variant embodiment according to the present invention;

Fig. 3 is the sectional perspective view that the security system of the dish-washing machine of Fig. 2 intercepts from different perspectives;

Fig. 4 is the perspective illustration of the security system of dish-washing machine according to another embodiment of the present invention; And

Fig. 5 has represented the enlarged drawing of the part shown in Fig. 4.

The specific embodiment

Dish-washing machine provides anti-flood safety system (Fig. 1), and this anti-flood safety system comprises: container 10, and this container 10 is positioned at the bottom of dish-washing machine, is used to collect the water of effusion; And sensor device, this sensor device can detect the predetermined threshold levels that water is reached in container 10, and this sensor device can send signal when reaching described level.

The sensor device of known type comprises radiation transmitter 12 and the radiation receiver 14 that is associated, they are packed in the single supported box 16, this supported box 16 is positioned at above the inner chamber of two (dihedral) structures 18, these two structures 18 have first wing plate 20 and second wing plate 22, and this first wing plate 20 and second wing plate 22 cross at 24 places, summit that point to chamber 10 bottoms.For example, transmitter 12 can be a light emitting diode, and receiver 14 can be a phototransistor.The annex of the water decalcification device 26 that two structures 18 are general types, this water decalcification device 26 are arranged in and are used for the softening water of supplying with this dish-washing machine in the dish-washing machine.

Each arrangements of components of sensor device becomes like this, promptly, the radiation of being sent by transmitter 12 is through the initial reflection of first wing plate 20 and another reflection of second wing plate 22, and finally towards receiver 14 reflections (seeing the path that is illustrated by the broken lines and marks by Reference numeral 28).The scope of these reflections is subjected to whether existing the influence of the water of overflowing in the container 10 between the

wing plate

20 and 22 of two structures 18.Therefore, in case accumulated the quite water of a large amount of (corresponding to a predetermined threshold levels) in this zone, sensor device sends signal, and this signal is used to start the excavationg pump (not shown in figure 1) directly or indirectly.This security system has very high operation accuracy, and very economical also because it does not need for example floating member of moving component, and can be contained in the conventional decalcification device or (when needing) is contained in the well (well) of dish-washing machine at an easy rate.

Fig. 2 and 3 has represented optional embodiment of the present invention, wherein, represents identical or equivalent unit with Reference numeral identical among the preceding figure.

In this example, anti-flood safety system comprises the floating member 30 that is arranged in collection container 10.These parts 30 have the dish type body, and bar 32 from the core of this body along vertically protruding upward.The level sensor apparatus comprises radiation transmitter 12 and the radiation receiver 14 that is associated, and they are electrically connected with PCB 34 on the two opposite sides of bar 32.PCB 34 also is electrically connected with another radiation transmitter 36 and another radiation receiver 38 (they are formed for detecting the part of the device of the salt level in the respective reservoirs 40 of decalcification device 26, and this decalcification device 26 is for being usually placed in the type in the conventional dishwashers).Holder 40 has capping plug 42, and has cofferdam 44, LED matrix 46 to be arranged in this cofferdam 44, and this LED matrix 46 also is electrically connected with PCB 34.

Transmitter

12 and 36 can be a light emitting diode for example, and

receiver

14 and 38 can be a phototransistor.

Since possible effusion and in container 10 water of accumulation make floating member 30 raise together with its relevant link rod 32, when reaching predetermined threshold levels, this bar 32 blocks from transmitter 12 to receiver 14 radiation path.Therefore, sensor device sends signal, and this signal is used for directly or indirectly starting excavationg pump.

The operation principle of device of salt level that is used for detecting holder 40 is similar substantially.In this example, between transmitter 36 and receiver 38, whether exist salt will influence the amount of radiation that is received by receiver 38, like this, will send signal when being lower than predeterminated level when the level of salt drops to.This signal especially can be used to the capping plug 42 opening LED matrix 46 and illuminate holder 40, finishes and causes user's attention when opening in cycles of washing with the door of convenient dish-washing machine.

In the course of work of dish-washing machine, LED matrix 46 can also be used to monitor in the indoor correct work of rotor rotated (not shown) on capping plug 42 of washing cavities.

As mentioned above, the security system of second embodiment of the invention needs floating member 30, but, does not have any outer member to resist rising campaign these parts, that cause the signal transmission.This has been avoided the inexactness of known devices, and in known devices, floating member must overcome the resistance of machinery antagonism parts, and this resistance may change in worker's difference scope of relative broad.And, Already in the dish-washing machine and also be used for the electronic section of the PCB 34 of other function (for example monitoring salt level) as the sensor device of this add-on security system of the present invention in respective reservoirs 40.Therefore it can also simplified structure and reduces cost.

Figure 4 and 5 have been represented another embodiment of the present invention, wherein, are used to represent identical or equivalent parts with Reference numeral identical in the prior figures 1.

In this example, two structures are not the annex of water decalcification device 26, but insert the base section of the individual components 44 in the housing, in conventional equipment, are occupied by floating member usually in this housing.These parts 44 are the form of hollow stem, have from the radially-protruding flange 46 of its upper end edge, and as retainer, so that before device 26 is assembled in the dish-washing machine, prevent to lower slider.Should be known in that when device 26 is assembled in the dish-washing machine with parts 44 summit 24 of two structures 18 contacts with the bottom of container 10, is used to collect the water of effusion.

Comprise that the operation principle of sensor device of generator 12 and receiver 14 and structure and earlier in respect of figures 1 are described as broad as long.

The advantage of embodiment shown in the Figure 4 and 5 is that it can utilize in the assembling process of dish-washing machine and may and be fixed to any space that is not used that forms between the container 10 of bottom at decalcification device 26.

Obviously, as long as keep principle of the present invention, under the situation of the scope that does not break away from claim, the detailed structure of embodiment can be carried out multiple variation by the described situation of example relatively with form.

Claims

1. dish-washing machine that is provided with anti-flood safety system, this dish-washing machine comprises:

Container (10) is used to collect the water of effusion; And

Sensor device is used for detecting the predetermined threshold levels that water reached of described container (10), and is used for sending when reaching described level signal, the radiation receiver (14) that described sensor device comprises radiation transmitter (12) and is associated.

2. dish-washing machine according to claim 1, wherein: described sensor device is static type, does not comprise any moving component.

3. dish-washing machine according to claim 1 and 2, wherein: described radiation generator (12) and radiation receiver (14) are contained in the single supported box (16) above the inner chamber that is arranged in two structures (18), and the bottom of described collection chamber (10) is pointed on the summit (24) of these two structures (18).

4. dish-washing machine according to claim 3, wherein: described two structures (18) are the annexes of water decalcification device (26).

5. dish-washing machine according to claim 1, also comprise floating member (30), this floating member (30) is arranged in described collection chamber (10), this floating member (30) has the bar (32) that stretches out from it, described radiation transmitter (12) and radiation receiver (14) are electrically connected with PCB (34) on the two opposite sides of described bar (32), when feasible water in being accumulated in chamber (10) reached this threshold level, caused described bar raise and makes sensor device send described signal.

6. dish-washing machine according to claim 5, wherein: the rising campaign that resists floating member (30) and relevant rod (32) without any outer member.

7. according to claim 5 or 6 described dish-washing machines, wherein: described PCB (34) also is electrically connected with another radiation transmitter (36) and another radiation receiver (38), this another radiation transmitter (36) and another radiation receiver (38) are formed for detecting the part of the device of the salt level in the respective reservoirs (40) of decalcification device (26), the salt that described salt level sensor device can detect in described holder (40) reaches a predetermined threshold levels, and sends signal when reaching described level.

8. dish-washing machine according to claim 7, wherein: described salt holder (40) has capping plug (42), and cabin (44) arranged, LED matrix (46) is arranged in this cabin (44), this LED matrix (46) is electrically connected with described PCB (34), and when this LED matrix receives owing to reaching the signal that this threshold level produces from described salt level sensor device, this LED matrix (46) illuminates described capping plug (42).

9. dish-washing machine according to claim 8, wherein: described LED matrix (46) also has the monitoring function that rotor rotated is correctly worked on described capping plug (42) in the washing chamber.

10. dish-washing machine according to claim 1 and 2, wherein: the described radiation transmitter (12) and the radiation reflector (14) of the part of the sensor device of formation anti-flood safety system are respectively light emitting diode and phototransistor.

11. dish-washing machine according to claim 7, wherein: the described spurious radiation transmitter (36) and the radiation receiver (38) that form the part of the salt level sensor device in the holder (40) of this decalcification device (26) are respectively light emitting diode and phototransistor.

12. dish-washing machine according to claim 8, wherein: the described spurious radiation transmitter (36) and the radiation receiver (38) that are formed on the part of the salt level sensor device in the holder (40) of decalcification device (26) are respectively light emitting diode and phototransistor.

13. dish-washing machine according to claim 9, wherein: the described spurious radiation transmitter (36) and the radiation receiver (38) that form the part of the salt level sensor device in the holder (40) of this decalcification device (26) are respectively light emitting diode and phototransistor.

14. dish-washing machine according to claim 10, wherein: the described spurious radiation transmitter (36) and the radiation receiver (38) that form the part of the salt level sensor device in the holder (40) of this decalcification device (26) are respectively light emitting diode and phototransistor.

15. dish-washing machine according to claim 3, wherein: described two structures (18) are the base sections of the parts (44) of hollow stem shape.

16. dish-washing machine according to claim 15, wherein: the summit (24) of described two structures (18) contacts with the bottom of container (10).