VACUUM CLEANER WITH VALVE BODY MOULDED ON IT Russian patent published in 2010 - IPC A47L9/00 A47L9/19 

FIELD: personal use articles.

SUBSTANCE: invention is related to vacuum cleaner with underpressure valve, which, whenever maximum permissible underpressure is exceeded, opens auxiliary air channel. Vacuum cleaner comprises body and unit of motor with fan, which on the suction side is connected to dust-collecting chamber of dust-collecting device, and on the discharge side it is connected to outlet hole. Body of vacuum cleaner valve is installed with the possibility of switching whenever previously specified underpressure is achieved from prestressed closed position into open position in body of valve, which is installed in auxiliary air channel, communication along flow direction with one side with suction side of motor unit with fan and on the other side exposed to action of environment pressure. Valve body is provided on at least one part of vacuum cleaner body and consists of at least two parts with the first part of valve body and the second part of valve body. For assembly of valve body by means of connection of the first body part with the second part of vacuum cleaner body, the first part of valve body is arranged on the first part of vacuum cleaner body, and the second part of valve body is provided on the second part of vacuum cleaner body. In one of valve body parts there is a previously spring-loaded valve body arranged. In order to hold previously spring-loaded valve body in previously specified position in the first part of valve body, in the first part of valve body there is a thrust device provided between valve body and the first part of valve body.

EFFECT: provision for installation of underpressure valve on vacuum cleaner by simple and reliable method and increased reliability of underpressure valve operation.

7 cl, 4 dwg