# US 2021/0340987 A1 · Side channel compressor for compressing a gas > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0340987 A1 - Document ID: US20210340987A1 - Status: Published application - Kind: A1 - Application number: 17/246,560 - Filed: 2021-04-30 - Published: 2021-11-04 - Earliest claimed: 2020-04-30 - Assignees: Mahle International GmbH - Applicants: MAHLE International GmbH - Inventors: Steffen Huebner; Daniel Schatz; Johannes Weinmann - Web page: https://patentgrep.com/patent/US20210340987A1 ## CPC - F04D 23/008: {Regenerative pumps (for liquids or for liquids and elastic fluids F04D5/002)} - F04D 27/00: Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids - F04D 25/068: {Mechanical details of the pump control unit (pump control details F04D27/00)} - F04D 27/001: {Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring} - F04D 27/004: {by varying driving speed} - F04D 29/406: {especially adapted for liquid pumps} - Y02B 30/70: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract A side channel compressor for compressing a gas includes a housing, in which a side channel is arranged, which can be supplied with gas via a feed channel formed within the housing for feeding gas to the side channel and a discharge channel formed within the housing for discharging gas out of the side channel, wherein in the housing an impeller drive is arranged, wherein the side channel compressor includes a drive control for regulating and/or controlling the impeller drive. The impeller drive includes an impeller which on the output side engages in the side channel of the housing in order to drivingly interact with a gas. The side channel is designed for redirecting the gas flowing through the side channel by at least 270°. The drive control includes an integrated pressure sensor for measuring a gas pressure of the gas flowing within the side channel. ## Claims ### Claim 1 A side channel compressor for compressing gas, the side channel compressor comprising: a housing, in which an annular side channel is formed, which is fluidically connected to a feed channel formed within the housing for feeding gas to the side channel and to a discharge channel formed within the housing for discharging gas out of the side channel; an impeller drive arranged in the housing, which on the output side engages with an impeller in the side channel in order to drive gas located therein; a drive control arranged on the housing for regulating and/or controlling the impeller drive, and wherein the drive control comprises an integrated pressure sensor for measuring a gas pressure of the gas flowing within the side channel. ### Claim 2 (depends on 1) The side channel compressor according to claim 1, wherein the drive control forms an assembly unit with the pressure sensor which is attached to the housing. ### Claim 3 (depends on 1) The side channel compressor according to claim 1, wherein the side channel compressor comprises a riser channel which penetrates the housing at least in sections, which fluidically connects the pressure sensor with the side channel. ### Claim 4 (depends on 3) The side channel compressor according to claim 3, wherein the riser channel, forming a channel mouth, opens in the feed channel or in the discharge channel or in the side channel. ### Claim 5 (depends on 3) The side channel compressor according to claim 3, wherein the riser channel defines a pressure sensor mouth, on which the pressure sensor is fluidically communicate arranged in order to fluidically connect the pressure sensor with the discharge channel or the feed channel or the side channel. ### Claim 6 (depends on 5) The side channel compressor according to claim 5, wherein between the pressure sensor mouth of the riser channel and the pressure sensor a pressure riser line which with respect to the pressure sensor and the housing is separate and integral, in order to fluidically connect the pressure sensor with the riser channel. ### Claim 7 (depends on 6) The side channel compressor according to claim 6, wherein the pressure rise line is fixed to the pressure sensor in an integrally bonded manner and touchingly plugged into the pressure sensor mouth. ### Claim 8 (depends on 1) The side channel compressor according to claim 1, wherein the drive control comprises a circuit board holder, a control circuit board held thereon and a housing cover, wherein the circuit board holder is arranged on the housing, wherein the housing cover, subject to interposing a housing sealing means, sealingly lies against the circuit board holder and completely covers the control circuit board all round. ### Claim 9 (depends on 8) The side channel compressor according to claim 8, wherein the pressure sensor is directly soldered to the control circuit board. ### Claim 10 (depends on 1) The side channel compressor according to claim 1, wherein the pressure sensor is arranged, sandwich-like, on the one hand between the control circuit board and the circuit board holder on the other hand, and wherein the pressure sensor touchingly supports itself on the circuit board holder. ### Claim 11 (depends on 8) The side channel compressor according to claim 8, wherein the housing cover is fixed to the housing with fastening screws, wherein the fastening screws each engage through a centering tab protrudingly arranged on the circuit board holder, in order to align the circuit board holder, the control circuit board and the pressure sensor with respect to the housing cover, the housing and the riser channel. ### Claim 12 (depends on 1) The side channel compressor according to claim 1, wherein on the pressure sensor an ambient reference pressure is provided via a diaphragm arranged in the drive control. ### Claim 13 (depends on 1) The side channel compressor according to claim 1, wherein the pressure sensor is arranged suspended in the housing of the side channel compressor, such that liquid precipitating on the pressure sensor can drain by the force of gravity. ### Claim 14 (depends on 1) The side channel compressor according to claim 1, wherein: the side channel is designed for redirecting the gas flowing through the side channel by at least 270°, the feed channel branches into two separate channel arms each extending along a channel arm center axis, the discharge channel is passed through between the two channel arms, and the riser channel, forming a channel mouth, opens out on one or on both channel arms of the feed channel.