A washing machine water level sensing device and a washing machine

Abstract

The utility model discloses a washing machine water level sensing device and washing machine, wherein washing machine water level sensing device includes water level sensor, connecting pipe and drain valve, one end of connecting pipe is plum blossom pipe shape, the other end is round pipe shape, plum blossom pipe shape's end on connecting pipe is connected with water level sensor, round pipe shape's end on connecting pipe is connected with drain valve. In the utility model discloses washing machine water level sensing device, through connecting pipe direct connection water level sensor and drain valve, can better detect water level, realizes washing machine function. In the utility model discloses washing machine water level sensing device, connecting pipe adopts rubber material integrated mould pressing, and drain valve is three interface structures, can directly pass through connecting pipe and connect water level sensor, eliminates the joint weak point of traditional splicing structure, and the sealing property and structural property are all promoted, can effectively prevent liquid along the joint and infiltrate internal structure.

Description

Technical fields:

[0001] This utility model relates to a water level sensing device for a washing machine and a washing machine, which belongs to the field of household appliance technology. Background technology:

[0002] As an essential home appliance in modern households, the structural design of washing machines directly impacts the user experience. Three-zone drum washing machines, with their comprehensive functions, large capacity, and the ability to select different drum sizes based on the volume of laundry, have gained widespread attention and can completely replace ordinary and small drum washing machines on the market. The water level sensing function is a crucial component of the washing machine. The water level sensor monitors changes in the water level inside the washing tub in real time. When the water level reaches a preset standard, a signal is triggered to the main board, controlling the inlet valve to close or the drain pump to start. For example, it automatically stops water intake when the water level is high and starts a water replenishment program when the water level is low. When an abnormal water level is detected (such as excessive water intake or residual water not drained), the system will trigger an alarm and pause operation to prevent equipment damage or safety hazards. Therefore, the water level sensing method requires careful consideration of the design of the water level sensor tube and the drain valve, as well as the flow length.

[0003] Currently, most water level sensor tubes for drum washing machines on the market are made of ordinary EPDM molding, and their shape is a common plum blossom tube. This type of water level sensor tube needs to be connected to an injection-molded air chamber conduit first, then to the drain pipe, and finally to the drain valve. This makes the process from the water level sensor to the drain valve cumbersome, increases manufacturing costs, and, more importantly, introduces uncontrollable factors that can affect the water level detected by the water level sensor.

[0004] Therefore, it is indeed necessary to improve existing technologies to address their shortcomings. Utility model content:

[0005] This invention provides a washing machine water level sensing device and a washing machine to solve the problems existing in the prior art.

[0006] The present invention adopts the following technical solution: a water level sensing device for a washing machine, comprising a water level sensor, a connecting pipe and a drain valve, wherein one end of the connecting pipe is in the shape of a plum blossom tube and the other end is in the shape of a round tube, the plum blossom tube end of the connecting pipe is connected to the water level sensor and the round tube end of the connecting pipe is connected to the drain valve.

[0007] Furthermore, the connecting pipe is integrally molded from rubber.

[0008] Furthermore, the inner diameter of the end of the circular tube of the connecting pipe is 12mm, and the inner diameter of the end of the plum blossom tube of the connecting pipe is 3.8mm.

[0009] Furthermore, the drain valve is provided with three interfaces, namely a first interface, a second interface and a third interface. The first interface is connected to the round end of the connecting pipe, the second interface is connected to a water pipe for draining water out of the washing machine, and the third interface is connected to the corrugated pipe at the bottom of the washing machine tub.

[0010] Furthermore, the outer surface of the circular tube end of the connecting pipe is raised with several spaced ribs, and a trial pipe clamp is engaged between adjacent ribs to fix the connecting pipe and the drain valve together.

[0011] Furthermore, the planes where the drain valve and the water level sensor are located are perpendicular to each other.

[0012] The present invention also adopts the following technical solution: a washing machine, including the washing machine water level sensing device described in any one of the preceding claims.

[0013] This utility model has the following beneficial effects:

[0014] (1) In the washing machine water level sensing device of this utility model, the water level sensor and the drain valve are directly connected by a connecting pipe, which can better detect the water level and realize the washing machine function.

[0015] (2) In the washing machine water level sensing device of this utility model, the connecting pipe is made of rubber material and molded in one piece. The drain valve has a three-port structure and can be directly connected to the water level sensor through the connecting pipe. This eliminates the weakness of the joints in the traditional splicing structure, improves both sealing and structural integrity, and can effectively prevent liquid from seeping into the internal structure along the joints. Attached image description:

[0016] Figure 1 This is a schematic diagram of the washing machine water level sensing device of this utility model. Detailed implementation method:

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] This utility model relates to a washing machine water level sensing device, comprising a water level sensor 1, a connecting pipe 2, and a drain valve 3. The connecting pipe 2 is integrally molded from rubber, with one end shaped like a plum blossom and the other end shaped like a round tube. The inner diameter of the round end of the connecting pipe 2 is 12mm, and the inner diameter of the plum blossom end is 3.8mm. The plum blossom end of the connecting pipe 2 is connected to the water level sensor 1, and the round end of the connecting pipe 2 is connected to the drain valve 3.

[0019] The drain valve 3 has three ports: a first port 31, a second port 32, and a third port 33. The first port 31 is connected to the end of the round tube on the connecting pipe 2. The second port 32 is connected to a water pipe that drains water out of the machine. The third port 33 is connected to the corrugated pipe (not shown) at the bottom of the washing machine tub.

[0020] The outer surface of the circular end of the connecting pipe 2 has several spaced ribs 20 protruding from it. During installation, use a pipe clamp to fix it between adjacent ribs 20. The ribs 20 can better fix the connecting pipe 2 and the drain valve 3, thus maintaining good sealing. When the plum blossom-shaped end of the connecting pipe 2 is installed on the water level sensor 1, the pull-out force can be tested to choose whether to use a pipe clamp or not.

[0021] In this utility model of washing machine water level sensing device, the drain valve 3 and the water level sensor 1 are approximately perpendicular to each other, which can effectively prevent condensate from accumulating and affecting air pressure detection. The connecting pipe is not bent, making installation convenient, thereby extending the service life, reducing maintenance costs, and improving the user's use and maintenance experience.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A water level sensing device for a washing machine, characterized in that: It includes a water level sensor (1), a connecting pipe (2) and a drain valve (3). One end of the connecting pipe (2) is in the shape of a plum blossom tube, and the other end is in the shape of a round tube. The plum blossom tube end of the connecting pipe (2) is connected to the water level sensor (1), and the round tube end of the connecting pipe (2) is connected to the drain valve (3).

2. The washing machine water level sensing device as described in claim 1, characterized in that: The connecting pipe (2) is integrally molded from rubber.

3. The washing machine water level sensing device as described in claim 1, characterized in that: The inner diameter of the end of the connecting pipe (2) in the round tube shape is 12mm, and the inner diameter of the end of the connecting pipe (2) in the plum blossom tube shape is 3.8mm.

4. The washing machine water level sensing device as described in claim 1, characterized in that: The drain valve (3) is provided with three interfaces, namely the first interface (31), the second interface (32) and the third interface (33). The first interface (31) is connected to the end of the round tube on the connecting pipe (2). The second interface (32) is connected to a water pipe for draining water out of the washing machine. The third interface (33) is connected to the corrugated pipe at the bottom of the washing machine tub.

5. The washing machine water level sensing device as described in claim 1, characterized in that: The outer surface of the cylindrical end of the connecting pipe (2) is raised with several spaced ribs (20), and a trial pipe clamp is snapped between adjacent ribs (20) to fix the connecting pipe (2) and the drain valve (3) together.

6. The washing machine water level sensing device as described in claim 1, characterized in that: The planes on which the drain valve (3) and the water level sensor (1) are located are perpendicular.

7. A washing machine, characterized in that: Includes the washing machine water level sensing device as described in any one of claims 1-6.

Images