CN115316902A

CN115316902A - Overflow alarm device, dish washing machine and overflow control method

Info

Publication number: CN115316902A
Application number: CN202210923435.8A
Authority: CN
Inventors: 梁进军; 黎铭峰; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-11-11

Abstract

The invention provides an overflow alarm device, a dish washing machine and an overflow control method. The overflow alarm device comprises an overflow disc, an alarm trigger and an overflow floater. A groove for containing liquid is formed by locally and downwards sinking the overflow disc; the alarm trigger is arranged on the overflow disc; the overflow floater is arranged at the lower side of the alarm trigger in the groove; wherein the overflow float floats with the change of the liquid level of the liquid in the groove to trigger an alarm when the overflow float abuts against the alarm trigger. The overflow alarm device can collect leaked liquid, concentrate the liquid at the lowest position of the groove of the overflow disc, and start the alarm trigger to alarm through the overflow floater which is arranged at the lowest position of the groove in a floating manner.

Description

Overflow alarm device, dish washing machine and overflow control method

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to an overflow alarm device, a dish washing machine and an overflow control method.

Background

With the improvement of living standard and the change of consumption concept, the dish washer as a machine for washing and containing tableware has gradually started to enter into the broad families, becoming one of the mainstream kitchen electricity of the families. In order to save kitchen space, most dish washing machines are embedded in a cabinet for installation, the bottom wall of a dish washing cavity of the dish washing machine is easy to leak water due to the existence of a plurality of welding points, riveting points or inevitable stretching defects and the like, when the bottom wall of the dish washing cavity leaks water, the water can directly overflow into the cabinet, the cabinet is damaged due to the fact that the water is wet in the dish washing cavity, and moisture is generated in the cabinet due to the fact that the water is wet in the cabinet; other electrical appliances installed in the cabinet may also cause the risk of circuit short-circuit fire due to water soaking, affecting the use of users, and bringing claims and the risk of circuit short-circuit fire.

Disclosure of Invention

The invention aims to provide an overflow alarm device which can collect leaked liquid, concentrate the liquid at the lowest part of a groove of an overflow disc and start an alarm trigger to alarm through an overflow floater arranged at the lowest part of the groove in a floating way.

The invention also provides a dishwasher.

The invention also provides an overflow control method.

In order to realize the purpose of the invention, the invention adopts the following technical scheme:

according to one aspect of the present invention, an overflow warning device is provided. The overflow alarm device comprises an overflow disc, an alarm trigger and an overflow floater. A groove for containing liquid is formed by locally and downwards sinking the overflow disc; the alarm trigger is arranged on the overflow disc; the overflow floater is arranged at the lower side of the alarm trigger in the groove; wherein the overflow float floats with a change in the level of liquid in the recess to trigger an alarm when the overflow float abuts the alarm trigger.

According to an embodiment of the present invention, the overflow alarm device further includes a drainage portion, the overflow tray is provided with a drainage hole, and the drainage portion is disposed at the drainage hole to start drainage when the water level is higher than the installation position of the alarm trigger 2.

According to an embodiment of the present invention, the drain part includes a siphon cap and a siphon pipe, the siphon pipe corresponds to the drain hole and is connected to the overflow pan, and the siphon cap is sleeved on the siphon pipe and is in clearance fit with the siphon pipe to form a siphon structure.

According to an embodiment of the present invention, the outer side wall of the siphon tube is provided with a connection rib, and the connection rib is connected with the inner side wall of the siphon cap so as to form a gap between the inner side wall of the siphon cap and the outer side wall of the siphon tube.

According to an embodiment of the present invention, the drain part further includes an overflow pipe connected to an end of the siphon pipe remote from the siphon cap.

According to an embodiment of the present invention, the overflow alarm device further includes a limiting portion for connecting the alarm trigger to the overflow tray, and the limiting portion penetrates through the overflow float, so that the overflow float faces the alarm trigger during the floating process.

According to an embodiment of the present invention, the limiting portion includes a first limiting member and a second limiting member, the overflow float is provided with a limiting hole, the second limiting member is integrally formed on the overflow disc and penetrates through the limiting hole, a lower portion of the first limiting member penetrates through the limiting hole and is fastened with the second limiting member in the limiting hole to limit a floating direction of the overflow float, and the alarm trigger is connected to the first limiting member.

According to an embodiment of the present invention, the first limiting part includes a first limiting pin and a clamping groove, the second limiting part includes a second limiting pin connected to the overflow tray and a clamping hook elastically connected to the overflow tray, and when the first limiting pin and the second limiting pin are engaged in the limiting hole, the clamping hook is clamped and fixed with the clamping groove.

According to an embodiment of the present invention, there are two limiting holes, the two limiting holes are respectively opened at two sides of the overflow float, and correspondingly, there are two first limiting legs and two second limiting legs.

According to an embodiment of the invention, the alarm trigger is a microswitch, and the overflow float is provided with a projection corresponding to a button of the microswitch, and the projection is configured to press the button when the overflow float floats to the highest position.

According to another aspect of the present invention, a dishwasher is provided. The dishwasher comprises the overflow alarm device, the dishwasher shell, a display and a controller. The dishwasher shell is surrounded to form a dish washing cavity and an overflow cavity positioned below the dish washing cavity, and the overflow disc is arranged at the bottom of the overflow cavity; the controller is communicatively coupled to the alarm trigger and the display to receive information from the alarm trigger and to display an alarm code on the display.

According to another aspect of the present invention, there is provided an overflow controlling method for the aforementioned dishwasher. The method comprises the following steps: starting the dish-washing machine, when the overflow float contacts with the alarm trigger, the alarm trigger sends out a signal, wherein the height of the overflow float contacting with the alarm trigger is h ₁ Height of siphon pipe is h ₂ And h is ₂ ＞h ₁ (ii) a The controller displays an alarm code on the display when receiving a signal from the alarm trigger; if the alarm is processed, the operation is ended; if the alarm is not processed, the liquid level of the liquid in the overflow disc reaches h ₂ In the process, the overflow pan (1) is discharged through the siphon tube.

One embodiment of the present invention has the following advantages or benefits:

the overflow alarm device can collect leaked liquid, concentrates the liquid at the lowest part of the groove of the overflow disc, and starts the alarm trigger to alarm through the overflow floater arranged at the lowest part of the groove in a floating way; if the user does not respond to the alarm code, when the liquid level of the liquid reaches a certain height, the water is drained through the drainage part, and the liquid is prevented from overflowing the overflow disc and flowing into the cabinet; siphon and siphon cap constitution siphon structure of water drainage part then can in time discharge the water in the overflow dish when the water leakage is enough big to arrange to ground through the overflow pipe, further indicate user's dish washer the trouble of leaking water appears, even guarantee also can guarantee when the user can not discern the alarm code that water does not discharge into the cupboard.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a perspective view of an overflow warning device shown in accordance with an exemplary embodiment.

FIG. 2 is an exploded view of an overflow warning device shown in accordance with an exemplary embodiment.

FIG. 3 is a schematic diagram of a dishwasher according to an exemplary embodiment.

FIG. 4 is an enlarged view at A of FIG. 3, shown in accordance with an exemplary embodiment.

Wherein the reference numerals are as follows:

1. an overflow pan; 11. a groove; 12. a drain hole; 2. an alarm trigger; 3. an overflow float; 31. a limiting hole; 32. a protrusion; 4. a water discharge section; 41. a siphon cap; 42. a siphon tube; 421. connecting ribs; 43. an overflow pipe; 5. a limiting part; 51. a first limit piece; 511. a first limit foot; 512. a clamping groove; 52. a second limiting member; 521. a second limit pin; 522. a hook; 6. a dishwasher housing; 61. washing the bowl cavity; 62. an overflow chamber; 7. a cabinet.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a detailed description thereof will be omitted.

The terms "a", "an", "the", "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

As shown in fig. 1 to 4, fig. 1 is a perspective view illustrating an overflow alarm device according to the present invention. Fig. 2 shows an exploded view of an overflow alarm device provided by the present invention. Fig. 3 shows a schematic view of a dishwasher provided by the present invention. Fig. 4 shows an enlarged view of a in fig. 3 provided by the present invention.

The overflow alarm device of the embodiment of the invention comprises an overflow disc 1, an alarm trigger 2 and an overflow floater 3. A part of the overflow disc 1 is sunken downwards to form a groove 11 for containing liquid; the alarm trigger 2 is arranged on the overflow disc 1; the overflow floater 3 is arranged at the lower side of the alarm trigger 2 in the groove 11; wherein the overflow float 3 floats with the liquid level change of the liquid in the groove 11 to trigger an alarm when the overflow float 3 abuts against the alarm trigger 2.

As shown in fig. 1 and 2, a groove 11 is formed by locally sinking the overflow tray 1 downwards, the rest part of the overflow tray is gradually inclined towards the groove 11 around the groove 11, and the bottom wall of the groove 11 is inclined to a certain extent, when leaked liquid falls into the overflow tray 1, all the liquid can be preferentially gathered to the lowest part of the groove 11, the overflow tray 1 or the dish-washing machine can be inclined to some extent in time, the water flow to the lowest part of the groove 11 is not hindered, the overflow float 3 is arranged at the lowest part of the groove 11, when the overflow tray 1 begins to leak water, the water can flow to the lowest part of the groove 11 to enable the overflow float 3 to float upwards, the overflow float 3 is always kept floating under the alarm trigger 2, when the leaked water is enough, the alarm trigger 2 can be started when the overflow float 3 reaches the height of the alarm trigger 2, and the dish-washing machine is reminded of a user to have a fault due to the leaked water.

In a preferred embodiment of the present invention, the overflow alarm device further comprises a drain 4, the overflow pan 1 is provided with a drain hole 12, and the drain 4 is disposed at the drain hole 12 to start draining when the water level is higher than the installation position of the alarm trigger 2. The drain part 4 comprises a siphon cap 41 and a siphon tube 42, the siphon tube 42 corresponds to the drain hole 12 and is connected with the overflow pan 1, and the siphon cap 41 is sleeved on the siphon tube 42 and is in clearance fit with the siphon tube 42 to form a siphon structure.

As shown in fig. 1, 2 and 4, the overflow pan 1 is provided with a drain hole 12, preferably, the drain hole 12 is disposed at the lowest position of the groove 11, the drain portion 4 is connected to the drain hole 12, when the user does not notice an alarm signal, water continues to enter the overflow pan 1, and simultaneously, because the siphon tube 42 and the overflow pan 1 are both communicated with the atmosphere, the water level in the overflow pan 1 is the same as the water level in the gap between the siphon tube 42 and the siphon cap 41, when the water level in the overflow pan 1 reaches the top height of the siphon tube 42 of the drain portion 4, the water in the gap between the siphon tube 42 and the siphon cap 41 can flow out along the siphon tube 42, and when the water leakage speed is fast, after the siphon cap 41 is directly filled, the water level in the overflow pan 1 can be directly drained to the brim of the siphon cap 41, so that the siphon structure composed of the siphon tube 42 and the siphon cap 41 is used for draining water, the water in the overflow pan 1 can be quickly drained under the condition that the water leakage speed is fast, and it is ensured that a large water leakage point does not occur in the dishwasher.

In a preferred embodiment of the present invention, the outer sidewall of the siphon tube 42 is provided with a connection rib 421 which connects the inner sidewall of the siphon cap 41 to form a gap between the inner sidewall of the siphon cap 41 and the outer sidewall of the siphon tube 42.

As shown in fig. 1, 2 and 4, the connection rib 421 may be one, or may be multiple, when the connection rib 421 is one, the inner side wall of the siphon cap 41 is in interference fit with the siphon tube 42 and the connection rib 421, or a gap may be formed between the inner side wall of the siphon cap 41 and the outer side wall of the siphon tube 42, preferably, the connection rib 421 is multiple, the connection ribs 421 are disposed at the outer side wall of the siphon tube 42 at equal intervals, and the extending direction of the connection rib 421 is disposed along the axial direction of the siphon tube 42, so that the inner side wall of the siphon cap 41 is abutted against each connection rib 421, thereby obtaining the interference fit fixation between the siphon cap 41 and the siphon tube 42 through the connection rib 421, and the inner side wall of the siphon cap 41 has a gap with the outer side wall of the siphon tube 42 in the circumferential direction, thereby improving the effect of the siphon structure.

In a preferred embodiment of the present invention, the drain part 4 further includes an overflow pipe 43, and the overflow pipe 43 is connected to an end of the siphon tube 42 remote from the siphon cap 41.

As shown in fig. 1, 2 and 4, one end of the overflow pipe 43 is connected to the lower end of the siphon tube 42, and the other end of the overflow pipe 43 may be directly connected to the sewer line or may be left on the indoor floor, so that the user can find the alarm code in time even if the user does not understand the alarm code or does not notice the alarm code.

In a preferred embodiment of the invention, the overflow warning device further comprises a limiting portion 5 for connecting the warning trigger 2 to the overflow pan 1, the limiting portion 5 passing through the overflow float 3 so that the overflow float 3 faces the warning trigger 2 during the floating process.

As shown in fig. 1, 2 and 4, the lower part of the limiting part 5 is used for limiting the overflow float 3, and the upper part of the limiting part 5 is used for installing the alarm trigger 2, so that the overflow float 3 can be ensured to keep a straight-up and straight-down floating direction, and the accuracy of sending signals to the controller by the alarm kitchen is improved.

In a preferred embodiment of the present invention, the limiting portion 5 includes a first limiting member 51 and a second limiting member 52, the overflow float 3 has a limiting hole 31, the second limiting member 52 is integrally formed on the overflow tray 1 and passes through the limiting hole 31, a lower portion of the first limiting member 51 passes through the limiting hole 31 and is fastened with the second limiting member 52 in the limiting hole 31 to limit a floating direction of the overflow float 3, and the alarm trigger 2 is connected to the first limiting member 51.

As shown in fig. 1, 2 and 4, the second position-limiting member 52 is disposed below and integrally formed with the overflow tray 1 to form a whole, the overflow float 3 is provided with a position-limiting hole 31, the second position-limiting member 52 is disposed in the position-limiting hole 31, the lower portion of the first position-limiting member 51 is inserted into the position-limiting hole 31 from above the overflow float 3 and is fixed to the second position-limiting member 52 in a snap-fit manner, and the alarm trigger 2 is fixed to the upper portion of the first position-limiting member 51 at a position above the overflow float 3, so that when the overflow float 3 is floated by water, the overflow float 3 can slide along the first position-limiting member 51 and the second position-limiting member 52.

In a preferred embodiment of the present invention, the first limiting member 51 includes a first limiting leg 511 and a locking groove 512, the second limiting member 52 includes a second limiting leg 521 connected to the overflow pan 1 and a locking hook 522 elastically connected to the overflow pan 1, and when the first limiting leg 511 and the second limiting leg 521 are engaged in the limiting hole 31, the locking hook 522 is locked and fixed with the locking groove 512.

As shown in fig. 1, 2 and 4, the first limiting leg 511 is disposed at the lower portion of the first limiting member 51, the first limiting leg 511 has a semi-annular cross section, the second limiting leg 521 is integrally formed on the overflow disc 1, the cross section of the first limiting leg 511 is semi-annular, the first limiting leg 511 and the second limiting leg 521 can be completely disposed in the limiting hole 31 after being connected in a concave-convex manner, and a certain gap is formed between the peripheries of the first limiting leg 511 and the second limiting leg 521 and the limiting hole 31, so as to ensure that the overflow float 3 has a certain mobility, and the hook 522 is engaged with the engaging groove 512, so that the relative positions of the first limiting member 51 and the second limiting member 52 can be locked.

In a preferred embodiment of the present invention, there are two limiting holes 31, two limiting holes 31 are respectively opened at both sides of the overflow float 3, and correspondingly, there are two first limiting legs 511 and two second limiting legs 521.

As shown in fig. 1, 2 and 4, the two limiting holes 31 are respectively disposed on the left and right sides of the overflow float 3, so that when the overflow float 3 slides along the first limiting leg 511 and the second limiting leg 521, the left and right sides of the overflow float 3 can be ensured to slide synchronously, and the overflow float 3 is prevented from being stuck during the floating process.

In a preferred embodiment of the invention, the alarm trigger 2 is a microswitch, and the overflow float 3 is provided with a protrusion 32 corresponding to the push button of the microswitch, the protrusion 32 being configured to push the push button when the overflow float 3 floats to the highest position.

As shown in fig. 1, 2 and 4, the push button of the micro switch is disposed corresponding to the middle of the overflow float 3, and correspondingly, the protrusion 32 is also disposed at the middle of the overflow float 3, so that when the limiting holes 31 are disposed at the left and right sides of the overflow float 3, the accuracy of the push button of the overflow float 3 can be improved.

The overflow alarm device can collect leaked liquid, concentrates the liquid at the lowest part of the groove 11 of the overflow disc 1, and starts the alarm trigger 2 to alarm through the overflow floater 3 which is arranged at the lowest part of the groove 11 and floats on the liquid; if the user does not respond to the alarm code, when the liquid level of the liquid reaches a certain height, the water is drained through the drainage part 4, and the liquid is prevented from overflowing the overflow disc 1 and flowing into the cupboard 7; siphon 42 and siphon cap 41 of drain part 4 constitute the siphon structure, then can in time discharge the water in the overflow dish 1 when the volume of leaking water is big enough to arrange to ground through overflow pipe 43, further indicate user dish washer the trouble of leaking water, guarantee even the user also can guarantee when unable discernment alarm code that water does not discharge into cupboard 7.

The invention provides a dishwasher. The dishwasher comprises the aforementioned overflow warning device, a dishwasher housing 6, a display and a controller. The shell 6 of the dish washer is enclosed to form a dish washing cavity 61 and an overflow cavity 62 positioned below the dish washing cavity 61, and the overflow plate 1 is arranged at the bottom of the overflow cavity 62; the controller is communicatively coupled to the alarm trigger 2 and the display to receive information from the alarm trigger 2 and to display an alarm code on the display.

As shown in fig. 3, the dishwasher housing 6 is arranged in the cabinet 7, the bottom wall of the bowl washing cavity 61 separates the bowl washing cavity 61 and the overflow cavity 62, the overflow plate 1 is completely opposite to the bottom wall of the bowl washing cavity 61, so that no matter which position of the bottom wall of the bowl washing cavity 61 leaks, the leaked water can fall into the overflow plate 1, after the overflow float 3 touches the alarm trigger 2, the alarm trigger 2 transmits a signal to the controller, so that the controller makes a judgment according to the signal of the alarm trigger 2, and the controller sends an alarm code to the display.

The invention discloses an overflow control method for a dishwasher. The method comprises the following steps: starting the dishwasher, the alarm trigger 2 sends out a signal when the overflow float 3 contacts the alarm trigger 2, wherein the height of the overflow float 3 contacting the alarm trigger 2 is h ₁ The height of the siphon tube 42 is h ₂ And h is a ₂ ＞h ₁ (ii) a The controller displays an alarm code on the display when receiving the signal from the alarm trigger 2; if the alarm is processed, the operation is ended; if the alarm is not processed, the liquid level of the liquid in the overflow disc 1 reaches h ₂ In time, the overflow pan 1 is discharged through the siphon tube 42.

Wherein, the alarm trigger 2 is installed on the first limiting member 51 of the limiting part 5, and the maximum height h of the overflow float 3 which can be lifted is limited by the limiting part 5 ₁ When the leaked water falls into the water tankThe overflow disc 1 is gathered in the groove 11, enough water floats the overflow floater 3, when the height of the water reaches the height of the overflow floater 3 starting the alarm trigger 2, the alarm trigger 2 transmits the signal to the controller, the controller displays the alarm code on the display screen of the dish-washing machine after receiving the signal, if the user does not notice the alarm code or does not understand the meaning of the alarm code, the dish-washing machine continuously leaks water until the liquid level of the water reaches h ₂ So as to enter the siphon tube 42 through the gap between the siphon tube 42 and the siphon cap 41 and thus be discharged to the floor of the kitchen through the overflow pipe 43, thereby drawing the attention of the user while preventing the leaked water from being directly discharged into the cabinet 7 to damage the cabinet 7 or cause a short circuit in the circuit.

The overflow control method of the present invention prevents the water leaked from the dishwasher from directly draining into the cabinet 7 to damage the cabinet 7 or cause a short circuit of the circuit through the above steps.

In embodiments of the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, the appearances of the phrase "one embodiment," "a preferred embodiment," or the like, are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. An overflow warning device, comprising:

an overflow pan (1), a part of the overflow pan (1) is sunken downwards to form a groove (11) for containing liquid;

the alarm trigger (2), the said alarm trigger (2) is mounted to the said overflow pan (1);

the overflow floater (3), the overflow floater (3) is arranged at the lower side of the alarm trigger (2) in the groove (11);

the overflow float (3) floats along with the liquid level change of liquid in the groove (11) so that the overflow float (3) is abutted against the alarm trigger (2) to trigger alarm.

2. The overflow alarm device according to claim 1, further comprising a drain portion (4), wherein a drain hole (12) is formed in the overflow tray (1), and the drain portion (4) is disposed at the drain hole (12) to start draining when the water level is higher than the installation position of the alarm trigger (2).

3. The overflow warning device of claim 2, wherein the drain portion (4) comprises a siphon cap (41) and a siphon tube (42), the siphon tube (42) corresponds to the drain hole (12) and is connected with the overflow pan (1), and the siphon cap (41) is sleeved on the siphon tube (42) and is in clearance fit with the siphon tube (42) to form a siphon structure.

4. The overflow warning device according to claim 3, wherein a connection rib (421) is provided on an outer side wall of the siphon tube (42), and the connection rib (421) is connected to an inner side wall of the siphon cap (41) to form a gap between the inner side wall of the siphon cap (41) and the outer side wall of the siphon tube (42).

5. Overflow alarm device according to claim 3, characterized in that the drain (4) further comprises an overflow pipe (43), the overflow pipe (43) being connected to an end of the siphon tube (42) remote from the siphon cap (41).

6. The overflow warning device of claim 1, further comprising a limiting portion (5) for connecting the warning trigger (2) to the overflow pan (1), the limiting portion (5) passing through the overflow float (3) such that the overflow float (3) faces the warning trigger (2) during the floating process.

7. The overflow alarm device according to claim 6, wherein the limiting portion (5) comprises a first limiting member (51) and a second limiting member (52), the overflow float (3) is provided with a limiting hole (31), the second limiting member (52) is integrally formed on the overflow disc (1) and penetrates through the limiting hole (31), the lower portion of the first limiting member (51) penetrates through the limiting hole (31) and is buckled with the second limiting member (52) in the limiting hole (31) to limit the floating direction of the overflow float (3), and the alarm trigger (2) is connected to the first limiting member (51).

8. The overflow alarm device according to claim 7, wherein the first limiting member (51) comprises a first limiting pin (511) and a clamping groove (512), the second limiting member (52) comprises a second limiting pin (521) respectively connected to the overflow tray (1) and a clamping hook (522) elastically connected to the overflow tray (1), and when the first limiting pin (511) and the second limiting pin (521) are fitted in the limiting hole (31), the clamping hook (522) is clamped and fixed with the clamping groove (512).

9. The overflow alarm device according to claim 8, wherein the number of the limiting holes (31) is two, the two limiting holes (31) are respectively formed on two sides of the overflow float (3), and correspondingly, the number of the first limiting leg (511) and the number of the second limiting leg (521) are respectively two.

10. The overflow warning device according to claim 1, characterized in that the warning trigger (2) is a microswitch, and the overflow float (3) is provided with a protrusion (32) in correspondence of the push-button of the microswitch, the protrusion (32) being configured to push the push-button when the overflow float (3) floats to the maximum.

11. A dishwasher, comprising:

an overflow warning device as claimed in any one of claims 1 to 10;

the dish washing machine comprises a dish washing machine shell (6), wherein the dish washing machine shell (6) is surrounded to form a dish washing cavity (61) and an overflow cavity (62) positioned below the dish washing cavity (61), and the overflow disc (1) is arranged at the bottom of the overflow cavity (62);

a display; and

a controller communicatively coupled to the alarm trigger (2) and the display to receive information from the alarm trigger (2) and to display an alarm code on the display.

12. An overflow control method for a dishwasher according to claim 11, comprising:

starting the dishwasher, when the overflow floater (3) contacts with the alarm trigger (2), the alarm trigger (2) sends out a signal, wherein the height of the overflow floater (3) contacting with the alarm trigger (2) is h ₁ The height of the siphon (42) is h ₂ And h is a ₂ ＞h ₁ ；

The controller displays an alarm code on the display when receiving a signal from the alarm trigger (2);

if the alarm is processed, the operation is ended;

if the alarm is not processed, the liquid level of the liquid in the overflow disc (1) reaches h ₂ In this state, the overflow pan (1) is discharged through the siphon tube (42).