US-12624492-B2 - Filtering device and washing machine

US12624492B2US 12624492 B2US12624492 B2US 12624492B2US-12624492-B2

Abstract

A filtering device and a washing machine. The filtering device includes: a filtering cavity, which has a water inlet, a filtered water outlet and a sewage outlet for discharging filtered impurities. A filtering mechanism is inside the filtering cavity, to filter the water entering the filtering cavity. A blocking mechanism separates the inside of the filtering cavity into a first space and a second space. The water inlet is communicated to the first space, and the filtered water outlet is connected to the first space. The cleaning particles are in the first space in the filtering cavity. The cleaning particles can prevent the deposition of filtered impurities during the filtration process and avoid clogging of the filtering device. The blocking mechanism can prevent the cleaning particles from entering the second space, and from flowing out with the water flow from the filtered water outlet or the sewage outlet.

Inventors

Yanfen Lv
Sheng Xu

Assignees

QINGDAO HAIER WASHING MACHINE CO., LTD.
Haier Smart Home Co., Ltd.

Dates

Publication Date: 20260512
Application Date: 20220930
Priority Date: 20211013

Claims (14)

1 . A filtering device, including: a filtering cavity being provided with a water inlet, a filtered water outlet and a sewage outlet for discharging filtered impurities; a filtering mechanism being rotatably installed inside the filtering cavity to filter water entering the filtering cavity; wherein, the filtering device further includes: a blocking mechanism, which includes a blocking plate arranged inside the filtering cavity, and a first space and a second space are respectively formed on both sides of the blocking plate, the water inlet is communicated to the first space, and the filtered water outlet and sewage outlet are communicated to the second space; a water passing structure is provided on the blocking plate or between the blocking plate and the inner wall of the filtering cavity for communicating the first space and the second space; cleaning particles arranged in the first space of the filtering cavity are used to clean an inner wall of the filtering cavity and an outer wall of the filtering mechanism with friction and collision along with water flow; wherein the water inlet and the cleaning particles are provided on a side of the blocking plate, and the filtered water outlet and the sewage outlet are provided on an other side of the blocking plate; wherein an outer circumference of the filtered water outlet extends toward an outside of the filtering cavity to form a sealing support part; and wherein the filtering mechanism includes: a filtering part, being provided on the same side of the blocking plate as the water inlet and filters the water entering the first space; a water outlet joint, one end of which is connected to the filtering part, an other end passes through the blocking plate, and is rotatably inserted into the sealing support part.
2 . The filtering device according to claim 1 , wherein, the water passing structure is a plurality of water holes provided on the blocking plate; a width of the water holes is D 1 , and a width of the cleaning particles is d, and D 1 <d; alternatively, an outer peripheral part of the blocking plate is spaced apart from the inner wall of the filtering cavity, and the water passing structure is a gap between the blocking plate and the inner wall of the filtering cavity; a width of the gap is D 2 , and the width of the cleaning particles is d, and D 2 <d.
3 . The filtering device according to claim 2 , wherein a density of the cleaning particles is less than that of water.
4 . The filtering device according to claim 3 , wherein, the density of the cleaning particles is 0.3 to 0.9 times the density of water, preferably 0.4 to 0.6 times.
5 . The filtering device according to claim 3 , wherein, the water inlet is provided in an upper area of the filtering cavity, and a diameter of the water inlet is smaller than the width d of the cleaning particles.
6 . The filtering device according to claim 1 , wherein the blocking plate is provided with a through hole for the water outlet joint to pass through, and the through hole fits with an outer wall of the water outlet joint with a clearance.
7 . The filtering device according to claim 6 , wherein, directions of the water inlet and the sewage outlet are perpendicular to an axial direction of the filtering mechanism.
8 . The filtering device according to claim 1 , wherein, directions of the water inlet and the sewage outlet are perpendicular to an axial direction of the filtering mechanism.
9 . The filtering device according to claim 8 , wherein, the filtering cavity has a columnar structure, the filtered water outlet is disposed on an end surface of one end of the filtering cavity, the sewage outlet is disposed near one end of the filtered water outlet, and the water inlet is disposed near an other end of the filtering cavity.
10 . The filtering device according to claim 1 , wherein, a bearing is set on the water outlet joint; a seal is provided on a side of the bearing facing the inside of the filtering cavity, and the seal blocks a gap between the water outlet joint and the sealing support part.
11 . A washing machine, wherein the washing machine includes: a water tank; a circulating filter pipeline, a water inlet end and a water outlet end of the circulating filter pipeline are respectively connected with the water tank, and the filtering device according to claim 1 is arranged on the circulating filter pipeline.
12 . The washing machine according to claim 11 , further comprising a recovery device connected to the sewage outlet for collecting the filtered impurities discharged.
13 . The washing machine according to claim 12 , wherein the recovery device includes: a housing, being provided with a recovery chamber inside; a filter component, being arranged in the recovery chamber and divides the recovery chamber into a first chamber and a second chamber; the sewage outlet is communicated to the first chamber, and sewage carrying the filtered impurities enters the first chamber, and enters the second chamber after being filtered by the filter component, and the filtered impurities are collected in the first chamber; the second chamber is provided with a water outlet for discharging filtered clean water; the washing machine further includes a box body, the water tank and the filtering device are both disposed in the box body; the housing is insertable/extractable and is disposed on the box body.
14 . The washing machine according to claim 12 , the sewage outlet and the recovery device are connected through a sewage pipeline, and a sewage control valve for controlling opening and closing of the sewage pipeline is provided on the sewage pipeline.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a Section 371 of International Application No PCT/CN2022/123102, filed Sep. 30, 2022, which was published in the Chinese language on Apr. 20, 2023, under International Publication No. WO 2023/061247 A1, which claims priority under 35 U.S.C. § 119 (b) to Chinese Application No. 202111191360.0, filed Oct. 13, 2021, the disclosures of each of which are incorporated herein by reference. TECHNICAL FIELD The invention belongs to the technical field of washing machines, and specifically relates to a filtering device and a washing machine. BACKGROUND Existing washing machines are generally equipped with a filter for filtering lint. During the washing process, the washing water is circulated through the filter to remove the lint from the washing water to prevent the lint in the washing water from adhering to the surface of the washed clothes and affecting the performance of the clothes cleaning effect. However, the filter is usually installed inside the inner drum or drainage pump. After the washing machine is used for a long time, the inside of the filter will be filled with lint and debris, affecting the filtering effect of the filter. In severe cases, it may even block the drainage pump. At the same time, accumulated lint and other debris can easily breed bacteria and need to be cleaned in time, otherwise it will cause pollution of the washing water, cause secondary pollution to the clothes, and affect the health of users. However, most washing machines require users to remove the filter and clean it manually, which is inconvenient to operate. On the other hand, in some filters, in order to prevent lint from clogging the filter holes on the filter, the pore size of the filter holes is usually set larger. However, this will also cause the fine lint on some clothes to not be filtered, causing this part of the lint to be blocked. The part of the lint stick to the clothes and affect the user experience. At the same time, some fine lint debris is drained away with the water flow and enters the ecological cycle, which will eventually affect human health. Chinese patent application number 201310612183.8 discloses a filter and a washing machine. The filter includes a filter cylinder and a filter screen. The cylinder body is provided with a water inlet, a water outlet and a sewage outlet. The filter screen is installed inside the cylinder body, the inner cavity of the filter cylinder is divided into two parts: an internal cavity and an external cavity. The upper end of the internal cavity is connected to the water inlet, the lower end is connected to the sewage outlet, and the external cavity is connected to the water outlets are connected, and the sewage flows from the water inlet into the inner cavity. After being filtered by the filter screen, it enters the outer cavity and flows out through the water outlet. The filtered impurities are discharged from the sewage outlet. In the above scheme, although the filter structure is set up so that the filtered impurities are less likely to hang on the filter and are easier to discharge, automatic cleaning of the filter cannot be fully realized, and the user still needs to clean it manually when necessary. On the other hand, the above solution can only perform autonomous cleaning before and after circulation filtration, and it is difficult to clean the inside of the filtering device during the circulation filtration process. When there are many impurities such as lint in the water, the filter may be covered during the filtration process, seriously affecting the filtration efficiency. In view of this, the present invention is proposed. SUMMARY The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a filtering device and a washing machine. Cleaning particles are provided in the filtering cavity of the filtering device. During the filtering process, the friction between the cleaning particles and the inside of the filtering device can prevent filtered impurities from being deposited and ensure filtration efficiency. At the same time, a blocking mechanism is set up in the filtering cavity to prevent cleaning particles from entering the filtered water outlet and sewage outlet, preventing cleaning particles from being discharged from the filtering cavity with the water flow. It also prevents cleaning particles from clogging the filtered water outlet or sewage outlet. In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A filtering device including: a filtering cavity being provided with a water inlet, a filtered water outlet and a sewage outlet for discharging filtered impurities;a filtering mechanism being rotatably installed inside the filtering cavity to filter water entering the filtering cavity;wherein, the filtering device further includes:a blocking mechanism, being pro