Double-water-level switch

Abstract

The utility model discloses a double-water-level switch which is located on one side of a water tank and comprises a switch shell, two floaters and two water level switches, the switch shell comprises two barrel-shaped limiting shells, each limiting shell is internally provided with one floater, the water level switches are installed on the side wall of the water tank, and each water level switch corresponds to the corresponding floater. The two barrel-shaped limiting shells are each internally provided with a floater, when any floater floats to the set water level, the floater is aligned with the water level switch, the water level switch transmits a signal to the electric control unit after sensing the floater, and the electric control unit controls the water inlet valve to be closed. The two floaters and the two water level switches are arranged in the double-water-level switch, the water inlet valve can be closed as long as one water level switch signal is detected, the water level in the water tank can be effectively controlled even if one water level switch fails, and the water inlet reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of water level switches, specifically relating to dual water level switches. Background Technology

[0002] Integrated cooktops often include a dishwasher or steam oven, which contains a water tank that needs to be filled automatically. Typically, a water level switch is installed in the tank; the inlet valve opens when water is being added, and closes to stop the water supply when the water level reaches the set value.

[0003] When using a water level switch, if the water level switch fails or the float cannot rise effectively, water in the tank may overflow. Utility Model Content

[0004] The purpose of this invention is to provide a dual water level switch that can close the inlet valve as long as one of the water level switches is detected. Even if one of the water level switches fails, the water level in the tank can still be effectively controlled, thus improving the reliability of water intake.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The dual water level switch, located on one side of the water tank, includes a switch housing, two floats, and two water level switches. The switch housing includes two barrel-shaped limiting shells, each containing a float. The water level switches are installed on the side wall of the water tank, with each water level switch corresponding to each float.

[0007] Each of the two barrel-shaped limiting shells contains a float. When either float rises to the set water level, it aligns with the water level switch. After the water level switch senses the float, it transmits a signal to the electronic control unit, which then controls the inlet valve to close.

[0008] Furthermore, the water level switch is a reed switch, and the float is a magnetic structure.

[0009] The magnetic float attracts the reed switch, causing the reed switch to close and transmit an action signal.

[0010] Furthermore, the limiting shell includes an arc-shaped portion and a limiting portion with an opening, the opening being positioned opposite to the water level switch, and the arc-shaped portion and the limiting portion surrounding the float.

[0011] The float moves up and down with the water level within the channel formed by the curved section and the limiting section. The opening is aligned with the water level switch to prevent the limiting section from weakening the float's magnetism, which could lead to insufficient sensitivity of the water level switch.

[0012] Furthermore, the inner wall of the arc-shaped part is provided with a guide protrusion.

[0013] The guide protrusions act as guides and limits the float. When the float moves horizontally, it contacts the guide protrusions, which restricts the float's displacement in the horizontal direction, allowing the float to rise and fall as vertically as possible.

[0014] Furthermore, the curved section is equipped with a water inlet, a water inlet hole, and a water inlet groove.

[0015] The water inlet is located at the bottom of the arc-shaped section, the water inlet hole is located in the middle of the arc-shaped section, and the water inlet trough is located at the top of the arc-shaped section. The arrangement of the water inlet, water inlet hole, and water inlet trough allows water at different levels to smoothly enter the limiting shell, preventing the water level inside the limiting shell from being inconsistent with the water level in the water tank.

[0016] Furthermore, a top block is provided at the top of the arc-shaped section. When the float rises to the top of the arc-shaped section, the top block abuts against the float.

[0017] The top block is designed to prevent the float from overflowing from the top of the limiting shell.

[0018] Furthermore, the limiting shells are connected by a connecting part.

[0019] The connecting part connects the two limiting shells.

[0020] Furthermore, a protrusion is provided at the bottom of the connecting part.

[0021] The protrusions enhance the stability of the limiting shell.

[0022] By adopting the above solution, this utility model has the following beneficial effects:

[0023] The dual-level switch has two floats and two level switches. As long as the signal of one of the level switches is detected, the water inlet valve can be closed. Even if one level switch fails, the water level in the tank can still be effectively controlled, thus improving the reliability of water intake.

[0024] The float moves up and down with the water level within the channel formed by the curved section and the limiting section. The opening is aligned with the water level switch to prevent the limiting section from weakening the float's magnetism, which could lead to insufficient sensitivity of the water level switch.

[0025] The design of the water inlet, water inlet hole, and water inlet groove on the arc-shaped part allows water at different levels to smoothly enter the limiting shell, preventing the water level inside the limiting shell from being inconsistent with the water level in the water tank. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a top view of the water tank.

[0028] Figure 2 This is a schematic diagram of the switch housing and float.

[0029] Figure 3 This is a schematic diagram of the switch housing.

[0030] Figure 4 This is a schematic diagram of the structure on the other side of the switch housing. Detailed Implementation

[0031] like Figure 1 The dual water level switch shown is located on one side of the water tank 1 and includes a switch housing 2, two floats 3, and two water level switches 4. Figure 2 As shown, the switch housing 2 includes two barrel-shaped limiting shells 5, each containing a float 3. A water level switch 4 is installed on the side wall of the water tank 1, with each water level switch 4 corresponding to each float 3. The water level switch 4 is a reed switch, and a magnet 6 is mounted on the float 3.

[0032] The limiting shell 5 includes an arc-shaped portion 51 and a limiting portion 52 with an opening. The opening is positioned opposite to the water level switch 4. The arc-shaped portion 51 and the limiting portion 52 surround the float 3. The inner wall of the arc-shaped portion 51 is provided with a guide protrusion 53.

[0033] like Figure 3 As shown, the arc-shaped part 51 is provided with a water inlet 54, a water inlet hole 55, and a water inlet groove 56. A top block 57 is provided at the top of the arc-shaped part 51. When the float 3 floats to the top of the arc-shaped part 51, the top block 57 abuts against the float 3.

[0034] like Figure 4 As shown, the limiting shells 5 are connected by a connecting part 7, and the bottom of the connecting part 7 is provided with a protrusion 71.

[0035] The water level switch 4 is connected to the electrical control unit, which controls the opening and closing of the inlet valve.

[0036] When water is introduced, the electronic control unit receives a working signal and opens the inlet valve, allowing water to enter the water tank 1 through the water pipe. As the water level in the tank increases, the float 3 rises with the water level. When the float 3 reaches a specific position, it aligns with the water level switch 4. The water level switch 4 senses the magnetism of the magnet 6 on the float 3, causing the reed switch to close. The action signal of the water level switch 4 is transmitted to the electronic control unit, which then controls the inlet valve to close, stopping the water from entering the water tank 1.

[0037] Because two water level switches 4 and two floats 3 are used, the electronic control unit can close the water inlet valve as long as it detects the signal of one of the water level switches 4. Even if one of the water level switches 4 fails, the water level in the water box can be effectively controlled, which greatly improves the reliability of water intake.

[0038] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A dual water level switch, located on one side of the water tank, characterized in that: The device includes a switch housing, two floats, and two water level switches. The switch housing includes two barrel-shaped limiting shells, each of which houses the float. The water level switches are mounted on the side wall of the water tank, with each water level switch corresponding to each float.

2. The dual water level switch according to claim 1, characterized in that: The water level switch is a reed switch, and the float is a magnetic structure.

3. The dual water level switch according to claim 1, characterized in that: The limiting shell includes an arc-shaped portion and a limiting portion with an opening, the opening being disposed opposite to the water level switch, and the arc-shaped portion and the limiting portion surrounding the float.

4. The dual water level switch according to claim 3, characterized in that: The inner wall of the arc-shaped part is provided with a guide protrusion.

5. The dual water level switch according to claim 3, characterized in that: The arc-shaped part is provided with a water inlet, a water inlet hole, and a water inlet groove.

6. The dual water level switch according to claim 3, characterized in that: The top of the arc-shaped part is provided with a top block, and when the float floats to the top of the arc-shaped part, the top block abuts against the float.

7. The dual water level switch according to claim 2, characterized in that: The limiting shells are connected by a connecting part.

8. The dual water level switch according to claim 7, characterized in that: The bottom of the connecting part is provided with a protrusion.

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