Haier Group has filed a patent for a dishwasher with a diverter assembly. The assembly includes a moveable diverter disk with a diverter head, a disk boss, and a disk channel. It also features an upper spring guide, a return spring, and a lower spring guide. The dishwasher appliance also includes a wash chamber, pump, and spray assembly. GlobalData’s report on Haier Group gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Haier Group, Contactless charging was a key innovation area identified from patents. Haier Group's grant share as of September 2023 was 51%. Grant share is based on the ratio of number of grants to total number of patents.

Dishwasher with a movable diverter assembly

Source: United States Patent and Trademark Office (USPTO). Credit: Haier Group

A recently filed patent (Publication Number: US20230309780A1) describes a dishwasher appliance with a unique diverter assembly. The dishwasher appliance includes a wash chamber for holding items to be washed, a pump, and a spray assembly. The diverter assembly, which is in fluid communication with the pump, consists of a diverter disk that can move along an axial direction between an upper and lower position.

The diverter disk includes a diverter head with an opening and a radial center, as well as a disk boss attached to the diverter head at the radial center. The disk boss has an upper opening and a lower opening, with the upper opening being smaller than the lower opening. The diverter assembly also includes an upper spring guide located within the disk channel of the disk boss, a return spring attached to the upper spring guide, and a lower spring guide attached to the bottom end of the return spring.

The upper spring guide has a conical opening with an apex, and it attaches to a pin at the apex of the conical opening. The pin is rotationally attached to the upper spring guide, forming a touchpoint between the apex and the pin. The return spring extends into a spring channel defined by the upper spring guide and also wraps around the guide shaft of the lower spring guide.

The diverter assembly can be moved between an extended position and a retracted position. In the retracted position, the guide shaft of the lower spring guide extends within the spring channel, and the return spring is contracted within the spring channel and coiled around the guide shaft. In the extended position, the return spring relaxes, extending the spring body throughout both the spring channel and around the guide shaft.

Overall, this patent describes a unique diverter assembly for a dishwasher appliance that allows for efficient and effective washing of items. The design of the diverter disk and the spring guides enables smooth movement and positioning of the diverter assembly, enhancing the performance of the dishwasher appliance.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.