[Purposes]This paper aims to obtain the technical development of jet dishwasher according to the patents,and to provide research reference for scientific researchers.[Methods]Based on the IPC number A47L15/14(dishwasher with fixed pottery basket and spray device in the cleaning room)and its sub-site group,the patent applications before February 27th,2023 were obtained on INCOPAT patent re-trieval platform as the analysis object,and the patent technology of jet dishwasher was analyzed from the perspectives of application volume,applicants and geographical distribution,and some key patents of several important innovation subjects were selected for analysis.[Findings]According to the statistical results,the patent application of jet dishwasher has increased greatly after 2013.One of the main pur-poses of jet dishwasher patent is to expand the spray cleaning area of spray arm and make the cleaning coverage of dishwasher wider.LG,Midea and other companies are in the lead in patent layout in this field.[Conclusions]Jet dishwasher,as the main washing structure of dishwasher,is expected to develop in the direction of better cleaning effect,elimination of cleaning dead angle and more energy saving in the future.
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