# US 11,027,216 B2 · Rotary evaporator having a filter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,027,216 B2 - Document ID: US11027216B2 - Status: Granted - Kind: B2 - Application number: 16/478,085 - Filed: 2017-11-27 - Published: 2019-12-26 - Granted: 2021-06-08 - Earliest claimed: 2017-01-16 - Assignees: Hans Heidolph GmbH - Applicants: Hans Heidolph GmbH - Inventors: Robert Löschei - Web page: https://patentgrep.com/patent/US11027216B2 ## CPC - B01D 3/10: Vacuum distillation (B01D3/12 takes precedence) - B01D 1/30: Accessories for evaporators {; Constructional details thereof} - B01D 3/085: {using a rotary evaporator} - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract The invention relates to a rotary evaporator having a rotary drive, having an evaporator flask rotatable about an axis of rotation by the rotary drive, having a vapor tube, and having a glass structure adjoining the vapor tube in the direction of vapor flow, wherein a filter connected upstream of the glass structure, in particular upstream of the vapor tube, is provided for filtering solids from a vapor flow. ## Claims ### Claim 1 A rotary evaporator, the rotary evaporator comprising: a rotary drive; an evaporator flask rotatable about an axis of rotation by the rotary drive; a vapor tube; a glass structure adjoining a vapor tube in the direction of the vapor flow; a filter connected upstream of the glass structure for filtering solids from the vapor flow; a connection section attached to the rotary drive, wherein the connection section includes a receiver for the evaporator flask; and a sealing device, wherein the sealing device is inserted into the receiver of the connection section, wherein the filter is drive-effectively connected to the connection section, and wherein the filter is fastened to the sealing device such that the vapor tube is sealed with respect to the connection section by the sealing device. ### Claim 2 (depends on 1) The rotary evaporator of claim 1, wherein the filter is connected upstream of the vapor tube. ### Claim 3 (depends on 1) The rotary evaporator of claim 1, wherein the rotary evaporator is configured such that the filter rotates along with the evaporator flask. ### Claim 4 (depends on 1) The rotary evaporator of claim 1, wherein the sealing device is a sealing disk having a leadthrough for the vapor tube. ### Claim 5 (depends on 1) The rotary evaporator of claim 1, wherein the receiver has a receiver base and wherein the sealing device is arranged between the receiver base and a neck of the evaporator flask. ### Claim 6 (depends on 5) The rotary evaporator of claim 5, wherein the sealing device is arranged between the receiver base and a flange-like connection point of the neck of the evaporator flask. ### Claim 7 (depends on 1) The rotary evaporator of claim 1, wherein the filter is connected to the sealing device by a screw connection. ### Claim 8 (depends on 1) The rotary evaporator of claim 1, wherein the sealing device has a collar section that is directed in the direction of the axis of rotation and to which the filter is fastened. ### Claim 9 (depends on 1) The rotary evaporator of claim 1, further comprising: a further sealing device by which the vapor tube is sealable with respect to the connection section to which the filter is not fastenable without further aids and that is usable with the rotary evaporator instead of the sealing device to which the filter is fastened. ### Claim 10 (depends on 1) The rotary evaporator of claim 1, wherein the filter projects into the evaporator flask. ### Claim 11 (depends on 1) The rotary evaporator of claim 1, wherein the filter is arranged at least partly within the evaporator flask. ### Claim 12 (depends on 1) The rotary evaporator of claim 1, wherein the filter is part of a filter unit that can be non-destructively dismantled into a plurality of parts. ### Claim 13 (depends on 1) The rotary evaporator of claim 1, wherein the filter is configured as an elongate hollow body. ### Claim 14 (depends on 1) The rotary evaporator of claim 1, wherein the filter is provided at a front-face end with a connection section for fastening the filter and/or is closed at a front-face end by a closure element. ### Claim 15 (depends on 1) The rotary evaporator of claim 1, wherein the filter is produced from a porous material. ### Claim 16 (depends on 1) The rotary evaporator of claim 1, wherein a plurality of filters are provided that differ from one another and that are selectively usable with the rotary evaporator. ### Claim 17 (depends on 1) The rotary evaporator of claim 1, further comprising: a plurality of filters connected one after the other that are each part of a common filter unit.