A drainage water channel device for a washing machine

Abstract

The present invention provides a drainage system for a washing machine, comprising a water tank, an overflow chamber, a switching valve, a drain pipe, and an overflow pipe. The water tank has a water inlet on its sidewall and a water outlet at its bottom. The switching valve is installed at the water outlet. The water tank and the overflow chamber are connected by a plug-in air pipe. The overflow chamber is provided with an overflow pipe, the top of which communicates with the overflow chamber. The bottom of the overflow pipe is provided with a vent. The drain pipe has a drainage channel and a ventilation channel. One end of the drainage channel communicates with the water outlet and the other end with the drain port. One end of the ventilation channel communicates with the vent and the other end with the drain port. The drain port is located above the water storage pan. During drainage, the overflow pipe allows air to flow in, balancing the air pressure inside and outside the water tank, thereby achieving drainage. When the liquid level exceeds the height of the drain port, the air inlet is sealed by water, stopping drainage. When the liquid level drops below the drain port, the air inlet can flow in, balancing the air pressure, and the drain port can resume drainage.

Description

Technical field

[0001] The present invention relates to the technical field of washing machines, in particular to a drainage water channel device of a washing machine. [Background Technology]

[0002] An overflow port is provided in the outer drum structure of an existing fully automatic washing machine. When the water level in the outer drum exceeds the overflow port, the excess water enters the drain valve through the overflow pipe and is directly discharged. The automatic drainage waterway of some fully automatic washing machines uses time-controlled drainage. When the drainage time reaches the specified time, the drainage is automatically stopped. Automatic drainage cannot be performed according to the height of the liquid level in the water storage tray. Now, a washing machine drainage waterway device is proposed. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a washing machine drainage water channel device that can achieve automatic drainage and automatic water addition and is easy to operate.

[0004] To achieve the above-mentioned objectives, the present invention proposes a drainage water channel device for a washing machine, comprising a water tank, an overflow chamber, a switching valve, a drain pipe and an overflow pipe, wherein a water inlet chamber is provided in the water tank, a water inlet communicating with the water inlet chamber is provided on a side wall of the water tank, a water outlet communicating with the water inlet chamber is provided at the bottom of the water tank, a switching valve is installed at the water outlet, the water tank and the overflow chamber are communicated with each other through a plug-in air pipe, an overflow pipe is provided in the overflow chamber, the top of the overflow pipe is communicated with the overflow chamber, a vent is provided at the bottom of the overflow pipe, one end of the drain pipe is arranged below the water tank and the overflow chamber, and the other end is provided with a drain outlet, a drainage channel and a ventilation channel are provided in the drain pipe, one end of the drainage channel is communicated with the water outlet, and the other end is communicated with the drain outlet, one end of the ventilation channel is communicated with the vent, and the other end is communicated with the drain outlet, and the drain outlet is arranged above the water storage pan.

[0005] Preferably, one end of the drain pipe is provided with a balance box connected to the water outlet and the vent, and the other end is provided with a downwardly extending drain outlet, the opening direction of the drain outlet is downward, and the interior of the drain outlet has two independent compartments connected to the drainage channel and the ventilation channel respectively, and the drainage channel and the ventilation channel are arranged side by side along the length direction of the drain pipe.

[0006] Preferably, a first extension portion extending from the upper portion of the water tank spans above the switching valve, and an end portion of the first extension portion is connected to a plug-in air pipe, which extends into the overflow chamber to connect the water tank and the overflow chamber.

[0007] Preferably, a support seat is extended from the side wall above the overflow chamber, the plug-in air pipe is inserted into the support seat, and the outer ring of the plug-in air pipe is installed with a sealing ring that closely fits the support seat.

[0008] Preferably, a second extension portion extends outward from the lower portion of the water tank, and a water outlet is provided at the end of the second extension portion. The area enclosed between the water tank and the overflow chamber is a valve body installation cavity, and the switching valve is arranged in the valve body installation cavity.

[0009] Preferably, the switching valve is a solenoid valve, a valve seat is provided at the water outlet, and the valve core of the solenoid valve abuts against the valve seat to control the opening and closing of the water outlet.

[0010] Preferably, a sealing ring is installed at the connection between the valve seat and the water tank and the drain pipe, and a sealing ring is installed at the connection between the drain pipe and the overflow chamber.

[0011] Preferably, the water inlet of the water tank is connected to a water inlet pipe equipped with a solenoid valve.

[0012] The beneficial effects of the present invention are as follows: the present invention cooperates with the water tank, overflow chamber, switching valve, drain pipe and overflow pipe. When water is taken in, the switching valve is energized to block the water outlet, and the overflow pipe is exhausted at the same time; when draining, the switching valve is de-energized to control the opening of the water outlet, and the overflow pipe takes in air at the same time to balance the air pressure inside and outside the water tank and achieve drainage. When the liquid level of the water storage tray exceeds the height of the drain outlet, the air inlet of the overflow pipe is sealed by water, and the gas cannot enter the water tank, so drainage stops. When the liquid level drops to below the drain outlet, the air inlet can take in air to balance the air pressure, and the drain outlet can achieve drainage again.

[0013] The features and advantages of the present invention will be described in detail through embodiments with reference to the accompanying drawings.

Brief Description of the Drawings

[0014] Figure 1 It is a three-dimensional schematic diagram of a drainage water channel device for a washing machine according to the present invention;

[0015] Figure 2 This is a top view of a partial structure of a drainage water channel device for a washing machine according to the present invention;

[0016] Figure 3 yes Figure 2 PP cross-section diagram of the water-filled state;

[0017] Figure 4 yes Figure 2 Schematic diagram of the PP section in the drainage state;

[0018] Figure 5 The present invention is a rear view schematic diagram of a drainage water channel device for a washing machine. [Specific implementation method]

[0019] See Figures 1 to 5The present invention provides a drainage waterway device for a washing machine, comprising a water tank 1, an overflow chamber 2, a switching valve 3, a drain pipe 4 and an overflow pipe 5. The water tank 1 is provided with a water inlet chamber 10, and a side wall of the water tank 1 is provided with a water inlet 11 communicating with the water inlet chamber 10. The bottom of the water tank 1 is provided with a water outlet 12 communicating with the water inlet chamber 10, and the switching valve 3 is installed at the water outlet 12. The water tank 1 and the overflow chamber 2 are communicated by a plug-in air pipe 13. The overflow chamber 2 is provided with an overflow pipe 5. The top of the overflow pipe 5 communicates with the overflow chamber 2, and a vent 51 is provided at the bottom of the overflow pipe 5. One end of the drain pipe 4 is located below the water tank 1 and the overflow chamber 2, and the other end is provided with a drain port 42. A drainage channel and a ventilation channel are provided within the drain pipe 4. One end of the drainage channel communicates with the water outlet 12, and the other end communicates with the drain port 42. One end of the ventilation channel communicates with the vent 51, and the other end communicates with the drain port 42. The drain port 42 is located above the water storage pan 40. The overflow pipe 5 is used for overflow drainage and ventilation. When the water level in the water tank is too high and exceeds the upper end of the overflow pipe, the water overflows and is discharged from the overflow pipe 5.

[0020] Furthermore, one end of the drain pipe 4 is provided with a balance box 41 that is connected to the water outlet 12 and the vent 51, and the other end is provided with a drain outlet 42 extending downward. The opening direction of the drain outlet 42 is downward, and the interior of the drain outlet 42 has two independent compartments that are respectively connected to the drainage channel and the ventilation channel. The drainage channel and the ventilation channel are arranged side by side along the length direction of the drain pipe 4.

[0021] Furthermore, a first extension portion 101 extends from the upper portion of the water tank 1, spanning above the switching valve 3. A connecting air pipe 13 is connected to the end of the first extension portion 101. The connecting air pipe 13 extends into the overflow chamber 2, connecting the water tank 1 and the overflow chamber 2. A support seat 21 extends from the side wall above the overflow chamber 2. The connecting air pipe 13 is inserted into the support seat 21. The outer ring of the connecting air pipe 13 is installed with a sealing ring that tightly fits the support seat 21 to ensure an airtight connection.

[0022] Furthermore, a second extension 101 extends outward from the lower portion of the water tank 1. The end of the second extension 101 is provided with a water outlet 12. The area enclosed between the water tank 1 and the overflow chamber 2 forms a valve body mounting cavity 30, within which the switching valve 3 is disposed. The switching valve 3 is a solenoid valve, with a valve seat 121 positioned at the water outlet 12. The valve core 31 of the solenoid valve abuts against the valve seat 121 to control the opening and closing of the water outlet 12. When the solenoid valve is de-energized, the valve core 31 moves away from the valve seat 121, opening the water outlet 12. Conversely, when the solenoid valve is energized, the valve core 31 abuts against the valve seat 121, blocking the water outlet 12. Sealing rings are installed at the connection between the valve seat 121, the water tank 1, and the drain pipe 4. A sealing ring is also installed at the connection between the drain pipe 4 and the overflow chamber 2 to ensure airtightness. The water inlet 11 of the water tank 1 is connected to a water inlet pipe equipped with a solenoid valve.

[0023] Working process of the present invention:

[0024] The working principle of the drainage water channel device of a washing machine of the present invention is as follows:

[0025] Water inlet state: When water is inletting, the solenoid valve of the water inlet pipe opens to let water in. At the same time, the switching valve is energized, the valve core moves against the valve seat, blocking the water outlet, and the lower end of the overflow pipe is exhausted at the same time;

[0026] Drainage state: When draining, the switching valve is powered off, the valve core is separated from the valve seat, the water outlet is open, and at the same time, the lower end of the overflow pipe is filled with air to balance the air pressure inside and outside the water tank to achieve drainage. When the liquid level exceeds the A level Figure 4 As shown), the air inlet of the overflow pipe is sealed by water, the gas cannot enter the water tank, and the water cannot be discharged. When the liquid level drops to level B Figure 4 As shown), the lower end of the overflow pipe can take in air to balance the air pressure, and the drain port can drain water again.

[0027] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A drainage waterway device for a washing machine, characterized by: The invention comprises a water tank (1), an overflow chamber (2), a switching valve (3), a drain pipe (4) and an overflow pipe (5), wherein the water tank (1) is provided with a water inlet chamber (10), a side wall of the water tank (1) is provided with a water inlet (11) communicating with the water inlet chamber (10), a bottom of the water tank (1) is provided with a water outlet (12) communicating with the water inlet chamber (10), a switching valve (3) is installed at the water outlet (12), the water tank (1) and the overflow chamber (2) are communicated through a plug-in air pipe (13), an overflow pipe (5) is provided in the overflow chamber (2), the top of the overflow pipe (5) is communicated with the overflow chamber (2), and the overflow pipe (5) is connected to the overflow chamber (2). 5) is provided with a vent (51) at the bottom, one end of the drain pipe (4) is arranged below the water tank (1) and the overflow chamber (2), and the other end is provided with a drain outlet (42), a drain channel and a ventilation channel are provided in the drain pipe (4), one end of the drain channel is communicated with the water outlet (12), and the other end is communicated with the drain outlet (42), one end of the ventilation channel is communicated with the vent (51), and the other end is communicated with the drain outlet (42), the drain outlet (42) is arranged above the water storage tray (40), and one end of the drain pipe (4) is provided with a balance box (41) that is communicated with the water outlet (12) and the vent (51).

2. A washing machine drainage water channel device according to claim 1, characterized in that: The other end of the drain pipe (4) is provided with a drain outlet (42) extending downward, the opening direction of the drain outlet (42) is downward, and the interior of the drain outlet (42) has two independent compartments respectively communicating with the drain channel and the ventilation channel, and the drain channel and the ventilation channel are arranged side by side along the length direction of the drain pipe (4).

3. The drainage water channel device for a washing machine according to claim 1, characterized in that: A first extension portion (101) extending from the upper portion of the water tank (1) and spanning above the switching valve (3) is provided. The end of the first extension portion (101) is connected to a plug-in air pipe (13). The plug-in air pipe (13) extends into the overflow chamber (2) to connect the water tank (1) and the overflow chamber (2).

4. A washing machine drainage water channel device according to claim 3, characterized in that: A support seat (21) extends from the side wall above the overflow chamber (2), the plug-in air pipe (13) is inserted into the support seat (21), and a sealing ring that closely matches the support seat (21) is installed on the outer ring of the plug-in air pipe (13).

5. The drainage water channel device for a washing machine according to claim 1, characterized in that: A second extension portion (102) extends outward from the lower portion of the water tank (1), and a water outlet (12) is provided at the end of the second extension portion (102). The area enclosed between the water tank (1) and the overflow chamber (2) is a valve body installation cavity (30), and the switching valve (3) is arranged in the valve body installation cavity (30).

6. The drainage water channel device for a washing machine according to claim 1, characterized in that: The switching valve (3) is a solenoid valve, and a valve seat (121) is provided at the water outlet (12). The valve core (31) of the solenoid valve abuts against the valve seat (121) to control the opening and closing of the water outlet (12). When the solenoid valve is powered off, the valve core (31) moves away from the valve seat (121), and the water outlet (12) is opened. Conversely, when the solenoid valve is powered on, the valve core (31) abuts against the valve seat (121), blocking the water outlet (12).

7. A washing machine drainage water channel device according to claim 6, characterized in that: A sealing ring is installed at the connection between the valve seat (121) and the water tank (1) and the drain pipe (4), and a sealing ring is installed at the connection between the drain pipe (4) and the overflow chamber (2).

8. The drainage water channel device for a washing machine according to claim 1, characterized in that: The water inlet (11) of the water tank (1) is connected to a water inlet pipe equipped with a solenoid valve.

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