公开(公告)号：US12215823B2

公开(公告)日：2025-02-04

申请号：US17618131

申请日：2019-06-26

Applicant: Graco Minnesota Inc.

Inventor： Xiaochuang Song ,  Ji Bao Wu ,  Zaixing You ,  Jin Tian

IPC: F16N39/04 ,  F04B1/02 ,  F04B15/00 ,  F04B23/02 ,  F16N13/02 ,  F16N13/00 ,  F16N13/06

Abstract: A lubricant pump (14) and a method thereof are disclosed. The lubricant pump (14) includes a pump base (32) and a reservoir housing (30). The pump base (32) and the reservoir housing (30) define a lubricant reservoir for storing lubricant. One or more pump elements (34) extend at least partially into the lubricant reservoir. Heaters (36) are disposed on the pump base (32) proximate the pump elements (34). The heaters (36) are configured to heat the local area surrounding the pump elements (34), to thereby reduce the viscosity of the lubricant at the pump elements (34). The heaters (36) are electrically connected to a thermal switch (38) to control activation and deactivation of the heaters (36). With the lubricant pump (14) and the method thereof, the thermal switch (38) can control the heater (36) based on air temperature rather than the temperature of the lubricant, so the viscosity of lubricant is well controlled.

公开(公告)号：US20220275907A1

公开(公告)日：2022-09-01

申请号：US17618131

申请日：2019-06-26

Applicant: Graco Minnesota Inc.

Inventor： Xiaochuang Song ,  Ji Bao Wu ,  Zaixing You ,  Jin Tian

IPC: F16N13/02 ,  F16N39/04

Abstract: A lubricant pump (14) and a method thereof are disclosed. The lubricant pump (14) includes a pump base (32) and a reservoir housing (30). The pump base (32) and the reservoir housing (30) define a lubricant reservoir for storing lubricant. One or more pump elements (34) extend at least partially into the lubricant reservoir. Heaters (36) are disposed on the pump base (32) proximate the pump elements (34). The heaters (36) are configured to heat the local area surrounding the pump elements (34), to thereby reduce the viscosity of the lubricant at the pump elements (34). The heaters (36) are electrically connected to a thermal switch (38) to control activation and deactivation of the heaters (36). With the lubricant pump (14) and the method thereof, the thermal switch (38) can control the heater (36) based on air temperature rather than the temperature of the lubricant, so the viscosity of lubricant is well controlled.