Drain valve assembly of washing machine and washing machine applying drain valve assembly

Abstract

The utility model provides a drain valve assembly of a washing machine and the washing machine applying the drain valve assembly, which comprises an air chamber, and an air chamber channel penetrates through the air chamber; the valve body is internally provided with a main drainage pipeline in a penetrating manner, the main drainage pipeline is communicated with the air chamber channel, and the communication part of the main drainage pipeline and the air chamber channel is provided with an isolation rib for slowing down the fluctuation of water flow so as to keep the air pressure in the air chamber stable when the water flow passes through the air chamber channel. The interference of water flow on the air pressure in the air chamber in the drainage process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machines, in particular to a drainage valve assembly of a washing machine and a washing machine using the drainage valve assembly. Background Art

[0002] In the existing pulsator washing machine, the inner barrel has a water-permeable hole, and the inner barrel is connected to the outer barrel. The inner barrel is a washing barrel, and the outer barrel is a water storage barrel. The water between the inner and outer barrel side walls does not participate in washing. The water that actually participates in washing is only the water in the inner barrel, which wastes a lot of water resources. In addition, too much water between the inner and outer barrels will also reduce the concentration of detergent in the washing liquid. Moreover, the water flows in and out frequently between the inner and outer barrels. After continuous use, the area between the side walls of the inner and outer barrels becomes a space for dirt and grime.

[0003] In order to solve the above defects, a washing machine with water isolation between inner and outer drums has emerged, that is, a washing machine without water between the inner and outer drums. It has the high performance of saving water resources and efficient cleaning, and at the same time avoids the disadvantage of dirt and grime hiding between the side walls of the inner and outer drums. However, since the air chamber structure without water in the outer drum needs to be made on the drain valve body, during the drainage process, due to the effect of water flow, it is easy to cause air pressure fluctuations inside the air chamber, thereby affecting the water level judgment, resulting in dehydration before all water is drained, resulting in the situation that clothes cannot be spun dry.

[0004] It can be seen from this that how to avoid the interference of water flow on the water level in the air chamber during the drainage process, thereby affecting the judgment of the water level in the inner drum, is an urgent problem that needs to be solved for waterless washing machines between inner and outer drums. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to avoid the interference of water flow on the air pressure in the air chamber during the drainage process.

[0006] In order to solve the above technical problems, the utility model provides a drain valve assembly for a washing machine, comprising:

[0007] An air chamber, wherein an air chamber passage runs through the air chamber;

[0008] A valve body, wherein a main drainage pipe runs through the valve body, and the main drainage pipe is connected to the air chamber channel, wherein an isolation rib for slowing down water flow fluctuations is provided at the connection between the main drainage pipe and the air chamber channel to maintain the stable air pressure in the air chamber when the water flows through the air chamber channel.

[0009] Furthermore, the isolation ribs are an integrated structure with the main drainage pipe, and the isolation ribs are provided with multiple circles.

[0010] Furthermore, a through hole is provided at the end of the air chamber channel along the water flow direction for discharging the washing debris mixed with the water flow.

[0011] Furthermore, the through holes are provided in plurality.

[0012] Furthermore, the two horizontal ends of the valve body are respectively provided with a valve body inner barrel drain port and a valve body outer barrel drain port which are connected.

[0013] Furthermore, the drain valve assembly also includes a connecting bolt, one end of which is vertically connected to the drain port of the outer barrel of the valve body, and the other end of which is connected to a torque motor.

[0014] Furthermore, the drain valve assembly also includes a valve shaft, which is arranged perpendicular to the water flow direction of the outer barrel drain port of the valve body, the valve shaft is connected to an opening spring, the opening spring is connected to the connecting bolt, and the torque motor is energized to drive the connecting bolt to drive the opening spring to extend and pull the valve shaft.

[0015] Furthermore, the drain valve assembly also includes a bellows, which is arranged perpendicular to the water flow direction of the outer barrel drain port of the valve body. One end of the bellows is tightly fastened to the valve shaft, and the other end is connected to the valve cover. The bellows moves in conjunction with the valve shaft.

[0016] Furthermore, a reset spring is arranged in the drain outlet of the valve body outer barrel. The reset spring is arranged on the valve shaft and is located between the valve shaft and the bellows. When the torque motor is powered off, the reset spring resets and drives the valve shaft to reset and then compress the bellows.

[0017] A washing machine comprises an inner tub and an outer tub, and also comprises the drain valve assembly, wherein the outer tub drain port of the valve body is communicated with the inner tub, and the outer tub drain port of the valve body is communicated with the outer tub.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides an isolation rib for slowing down the water flow speed at the connection point between the main drainage pipe and the air chamber channel without adding any new components, so as to avoid the interference of the water flow on the air pressure in the air chamber during the drainage process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the water flow direction of the utility model;

[0022] Figure 3 It is a partial cross-sectional view of A in the utility model, showing the drainage principle;

[0023] Figure 4 It is a cross-sectional view of the drain valve assembly in the utility model;

[0024] Figure 5 It is a left side view of the drain valve assembly in the utility model;

[0025] Figure 6 It is a frequency line graph of the existing washing machine water level curve;

[0026] Figure 7 The utility model is a water level curve frequency line graph of a washing machine using the drain valve assembly of the utility model.

[0027] In the figure: 1, air chamber; 10, air chamber channel; 100, through hole; 2, valve body; 20, main drainage pipe; 200, isolation rib; 21, inner barrel drainage port of valve body; 22, outer barrel drainage port of valve body; 23, connecting bolt; 24, valve shaft; 25, opening spring; 26, bellows; 27, valve cover; 28, reset spring; 3, torque motor; DETAILED DESCRIPTION

[0028] In order to make the technical scheme and technical effect of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments.

[0029] The utility model provides a drainage valve assembly for a washing machine. The drainage valve is applied to a washing machine for isolating water between an inner barrel and an outer barrel.

[0030] like Figure 1 As shown, the drain valve assembly includes an air chamber 1, a valve body 2, a connecting bolt 23 and a torque motor 3. The air chamber 1 is connected to the valve body 2, and the valve body 2 is provided with a connected valve body outer barrel drain port 21 and a valve body outer barrel drain port 22 at both horizontal ends. The valve body inner barrel drain port 21 is connected to the inner barrel of the washing machine, and the valve body outer barrel drain port 22 is connected to the outer barrel. One end of the connecting bolt 23 is vertically connected to the valve body outer barrel drain port 22, and the other end is connected to the torque motor 3.

[0031] like Figure 2-3 As shown, a valve shaft 24 , an opening spring 25 , a bellows 26 , a valve cover 27 and a return spring 28 are also arranged in the valve body 2 .

[0032] A valve shaft 24 is arranged perpendicular to the water flow direction of the outer barrel drain port 22 of the valve body, and the valve shaft 24 is connected to an opening spring 25, and the opening spring 25 is connected to a connecting bolt 23. The torque motor 3 is energized to drive the connecting bolt 23 to extend the opening spring 25 and pull the valve shaft 24.

[0033] A bellows 26 is also provided perpendicular to the water flow direction of the outer barrel drain port 22 of the valve body. One end of the bellows 26 is tightly attached to the valve shaft 24 , and the other end is connected to the valve cover 27 . The bellows 26 moves in conjunction with the valve shaft 24 .

[0034] A return spring 28 is also provided in the outer barrel drain port 22 of the valve body. The return spring 28 is provided on the valve shaft 24 and is located between the valve shaft 24 and the bellows 26 . When the torque motor 3 is powered off, the valve shaft 24 is reset to drive the return spring 28 to press the bellows 26 .

[0035] The working principle of the drain valve assembly is: after the torque motor 3 is powered on, it pulls the connecting bolt 23, and the connecting bolt 23 pulls the valve shaft 24 installed inside the valve body 2 through the opening spring 25, thereby driving the bellows 26 to open the drainage sealing channel. The reset spring 28 is responsible for resetting and compressing the bellows 26 after the torque motor 3 is powered off to avoid leakage of the drain valve when the water is not drained.

[0036] The top of the air chamber 1 is connected to the water level detection device through a hose. The bottom of the valve body outer barrel drain port 22 is connected to the outside of the washing machine through a hose.

[0037] like Figure 4-5 As shown, an air chamber channel 10 runs through the air chamber 1, and the water level in the drum of the washing machine is determined by the air pressure change in the air chamber 1. A main drainage pipe 20 runs through the valve body 2, and the main drainage pipe 20 is connected to the air chamber channel 10. In particular, an isolation rib 200 for slowing down the water flow is provided at the connection between the main drainage pipe 20 and the air chamber channel 10, so as to maintain the air pressure in the air chamber 1 stable when the water flows through the air chamber channel 10.

[0038] The isolation ribs 200 are an integrated structure with the main drainage pipe 20 , and the isolation ribs 200 are arranged circumferentially and are provided in multiple circles.

[0039] A main drainage pipe 20 runs through the valve body 2, and the main drainage pipe 20 is connected to the air chamber channel 10. An isolation rib 200 for slowing down the water flow speed is provided at the connection between the main drainage pipe 20 and the air chamber channel 10 to maintain the air pressure in the air chamber 1 stable when the water flows through the air chamber channel 10.

[0040] A plurality of through holes 100 are provided at the end of the air chamber channel 10 along the water flow direction to allow the washing debris mixed with the water flow to be discharged. For example, to prevent the accumulation of fluff, the through holes 100 provided allow the fluff to be discharged smoothly through the through holes 100 along the water flow.

[0041] like Figure 6 The frequency line graph of the water level curve of the existing washing machine shown has a large and steep initial jump, making it difficult to read the water level frequency.

[0042] The reason is: when draining, the water flows through the valve body 2 connected to the air chamber 1. Due to the fast water flow rate, siphoning is generated, which will form a negative pressure on the space inside the air chamber 1, thereby affecting the air pressure stability in the air chamber 1 and causing larger ripples. Since the water level of the washing machine is determined by converting the air pressure change inside the air chamber into an electrical signal transmitted to the computer board, it affects the water level judgment of the entire machine.

[0043] like Figure 7 The frequency line graph of the water level curve of the washing machine using the drain valve assembly of the utility model is shown in FIG. Figure 6 , the initial curve is obviously smoother and has smaller fluctuations, which is conducive to water level detection and judgment.

[0044] In order to solve the distortion problem in water level determination, the utility model isolates the air chamber channel 10 inside the valve body 2 from the main drainage pipe 20 with an isolation rib 200, so that drainage will not affect the air pressure in the air chamber 1, thereby not affecting the water level detection of the entire machine.

[0045] It should be noted that a washing machine containing the drain valve assembly provided by the utility model is also within the protection scope of the utility model.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drain valve assembly for a washing machine, characterized in that: include: An air chamber (1), wherein an air chamber passage (10) runs through the air chamber (1); A valve body (2), wherein a main drainage pipe (20) runs through the valve body (2), and the main drainage pipe (20) is connected to the air chamber channel (10), wherein an isolation rib (200) for slowing down water flow fluctuations is provided at the connection point between the main drainage pipe (20) and the air chamber channel (10), so as to maintain the air pressure in the air chamber (1) stable when the water flows through the air chamber channel (10).

2. The drain valve assembly of a washing machine according to claim 1, characterized in that: The isolation rib (200) is an integrated structure with the main drainage pipe (20), and the isolation rib (200) is provided with multiple circles.

3. The drain valve assembly of a washing machine according to claim 1, characterized in that: A through hole (100) is provided at the end of the air chamber channel (10) along the water flow direction for allowing the washing debris mixed with the water flow to be discharged.

4. The drain valve assembly of a washing machine according to claim 3, characterized in that: A plurality of through holes (100) are provided.

5. The drain valve assembly of a washing machine according to claim 1, characterized in that: The valve body (2) is provided with a valve body inner barrel drain port (21) and a valve body outer barrel drain port (22) which are connected to each other at the horizontal ends thereof.

6. The drain valve assembly of a washing machine according to claim 5, characterized in that: The drain valve assembly further comprises a connecting bolt (23), one end of which is vertically connected to the valve body outer barrel drain port (22), and the other end of which is connected to a torque motor (3).

7. The drain valve assembly of a washing machine according to claim 6, characterized in that: The drain valve assembly also includes a valve shaft (24), which is arranged perpendicular to the water flow direction of the outer barrel drain port (22) of the valve body, and the valve shaft (24) is connected to an opening spring (25), and the opening spring (25) is connected to the connecting bolt (23). When the torque motor (3) is energized, it drives the connecting bolt (23) to drive the opening spring (25) to extend and pull the valve shaft (24).

8. The drain valve assembly of a washing machine according to claim 7, characterized in that: The drain valve assembly also includes a bellows (26), which is arranged perpendicular to the water flow direction of the outer barrel drain port (22) of the valve body, one end of the bellows (26) is tightly fastened to the valve shaft (24), and the other end is connected to the valve cover (27), and the bellows (26) moves in conjunction with the valve shaft (24).

9. The drain valve assembly of a washing machine according to claim 8, characterized in that: A return spring (28) is also arranged in the outer barrel drain port (22) of the valve body. The return spring (28) is arranged on the valve shaft (24) and is located between the valve shaft (24) and the bellows (26). When the torque motor (3) is powered off, the return spring (28) is reset, driving the valve shaft (24) to reset and thereby compressing the bellows (26).

10. A washing machine, comprising an inner tub and an outer tub, characterized in that: It also includes a drain valve assembly as described in any one of claims 1 to 9, wherein the valve body outer barrel drain port (21) is connected to the inner barrel, and the valve body outer barrel drain port (22) is connected to the outer barrel.

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