Automatic delivery system for a washing machine and washing machine

Patent metadata

Field	Value
Publication number	US-11434597-B2
Application number	US-201816606095-A
Country	US
Kind code	B2
Filing date	Apr 17, 2018
Priority date	Apr 17, 2017
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

An automatic delivery system for a washing machine, and a washing machine, are provided. The automatic delivery system comprises: a water box provided with a main water inlet pipeline and a detergent delivery pipeline; a distribution box arranged inside the water box and provided with at least one installation cavity for accommodating a washing additive box; the washing additive box being installed in the installation cavity, and being provided with an unidirectional ventilation structure and a liquid outlet, and a negative pressure extraction mechanism, the negative pressure extraction mechanism comprising a Venturi tube arranged in the main water inlet pipeline, the washing additive being drawn out of the washing additive box and delivered into the washing barrel by a negative pressure generated by water flow through an outlet of the Venturi tube.

First claim

The invention claimed is:

1. An automatic delivery system for a washing machine, comprising:
a water box provided with a water outlet configured to be communicated with a washing barrel of a washing machine;
a main water inlet pipeline;
a detergent delivery pipeline;
a distribution box arranged inside the water box, the distribution box being internally provided with at least one installation cavity for accommodating a washing additive box;
the washing additive box being installed in the installation cavity; wherein
the washing additive box being a closed box body with a cavity for accommodating washing additive, and being provided with an unidirectional ventilation structure and a liquid outlet, the liquid outlet being open when the washing additive box is communicated with the detergent delivery pipeline, and the liquid outlet being closed when the washing additive box is disconnected with the detergent delivery pipeline; and
a negative pressure extraction mechanism, including a Venturi tube arranged in the main water inlet pipeline, the washing additive being drawn out of the washing additive box and delivered into the washing barrel by a negative pressure generated by water flow through an outlet of the Venturi tube,
wherein, the washing additive box is provided with a liquid outlet device, the liquid outlet device includes an on-off valve arranged on the liquid outlet of the washing additive box and a suction device arranged in the washing additive box, wherein
the suction device is a hollow tubular structure, a flow channel is formed inside the suction device, one end of the flow channel faces a bottom wall of the washing additive box, and another end of the flow channel is connected with the inlet of the on-off valve.

2. The automatic delivery system for the washing machine according to claim 1 , wherein the distribution box is provided with a first installation part having at least one installation cavity and a second installation part for enabling a washing powder delivery box to be arranged therein, the washing additive box is installed in the first installation part;
the washing powder delivery box is provided with a washing powder delivery cavity, and the washing powder delivery cavity is respectively communicated with an outlet of the main water inlet pipeline and a water outlet of the water box to pour washing powder into the washing barrel.

3. The automatic delivery system for the washing machine according to claim 1 , wherein the distribution box is provided with a first installation part having at least one installation cavity and a second installation part for enabling a disposable delivery box to be arranged therein, the washing additive box is installed in the first installation part,
the disposable delivery box is provided with a disposable delivery cavity, the disposable delivery cavity is internally provided with a siphon structure, the disposable delivery cavity is communicated with an outlet of the main water inlet pipeline located at an upstream of the disposable delivery cavity, and an outlet of the siphon structure is communicated with a water outlet of the water box.

4. The automatic delivery system for the washing machine according to claim 1 , wherein the distribution box is provided with a first installation part having at least one installation cavity, a second installation part for enabling a disposable delivery box to be arranged therein and a third installation part for enabling a washing powder delivery box to be arranged therein, and the washing additive box is installed in the first installation part,
the disposable delivery box is provided with a disposable delivery cavity having a siphon structure internally; the disposable delivery cavity is communicated with an outlet of the main water inlet pipeline located upstream of the disposable delivery cavity, and an outlet of the siphon structure is communicated with a water outlet of the water box; and
the washing powder delivery box is provided with a washing powder delivery cavity, the washing powder delivery cavity is respectively communicated with an outlet of the main water inlet pipeline and a water outlet of the water box to pour washing powder into the washing barrel.

5. The automatic delivery system for the washing machine according to claim 1 , comprising a switching mechanism, wherein
at least two washing additive boxes are arranged, the switching mechanism is provided with inlets corresponding to the number of washing additive boxes and at least one outlet, each inlet of the switching mechanism is correspondingly communicated with one washing additive box, and at least one outlet is communicated with the negative pressure extraction mechanism.

6. The automatic delivery system for the washing machine according to claim 1 , wherein an air pressure difference between an inner and an outer of the washing additive box makes the unidirectional ventilation structure be open for unidirectional air permeability, or makes the unidirectional ventilation structure be closed to seal the washing additive box.

7. The automatic delivery system for the washing machine according to claim 1 , wherein the washing additive box is provided with a liquid inlet, a liquid inlet cover is arranged at the liquid inlet in a detachable and sealed manner, and the unidirectional ventilation structure is arranged on the liquid inlet cover in a sealed manner.

8. The automatic delivery system for the washing machine according to claim 1 , wherein the on-off valve comprises a drainage channel and a piston and a reset spring arranged in the drainage channel, and the piston blocks the drainage channel under the effect of the reset spring.

9. The automatic delivery system for the washing machine according to claim 1 , wherein the installation cavity is provided with a limit structure, the limit structure comprises an elastic piece arranged at one side of the installation cavity, and the elastic piece is configured to be arranged between the washing additive box and a side wall of the installation cavity in an elastically deformed manner when the washing additive box is placed in the installation cavity.

10. The automatic delivery system for the washing machine according to claim 9 , wherein multiple washing additive boxes are arranged in the installation cavity in a parallel manner, the limit structure further comprises at least one separating rib arranged at a bottom wall of the installation cavity for separating one washing additive box from each other.

11. The automatic delivery system for the washing machine according to claim 2 , wherein the installation cavity and the washing powder delivery box are set to be adjacent to each other in a parallel manner, the washing powder delivery cavity is internally provided with a diversion plate, the diversion plate extends from one side wall of the washing powder delivery cavity to an opposite side wall in an inclined manner, a bottom wall of the washing powder delivery cavity is provided with a washing powder outlet, and the washing powder outlet is communicated with the water outlet of the water box.

12. The automatic delivery system for the washing machine according to claim 3 , wherein the installation cavity and multiple disposable delivery boxes are adjacent to each other in a parallel manner, an open end of the disposable delivery cavity is provided with a delivery funnel, and an outlet of the delivery funnel is relative to an opening of the disposable delivery cavity.

13. The automatic delivery system for the washing machine according to claim 1 , wherein the distribution box comprises an upper box and a lower box, the upper box and the lower b

Assignees

• Chongqing Haier Drum Washing Machine Co Ltd
• Haier Smart Home Co Ltd

Inventors

• Lv Peishi
• Li Liping
• Huang Tao

Classifications

• D06F39/088

  Liquid supply arrangements · CPC title

• D06F39/02 Primary

  Devices for adding soap or other washing agents · CPC title