Abstract: Provided is a turbo compressor for compressing a gas such as air and supplying the compressed gas to outside, the turbo compressor including a compression unit including a compression gas inlet for sucking the gas, an impeller for compressing the gas sucked through the compression gas inlet, a compression gas outlet for discharging the gas compressed by the impeller, and a compression gas channel connected from the compression gas inlet to the compression gas outlet, a motor including a rotary shaft having a front end coupled to the impeller, to rotate the impeller, a housing having a motor accommodation space to accommodate the motor, and a cooling gas channel passing through the motor accommodation space and enabling circulation of a cooling gas contained therein, wherein the compression gas channel is spatially separate from the cooling gas channel and thus the gas in the compression gas channel does not permeate into the cooling gas channel.

Abstract: Provided is a turbo compressor for compressing a gas such as air and supplying the compressed gas to outside, the turbo compressor including a compression gas inlet for sucking the gas, a first impeller, a second impeller, a compression gas outlet for discharging to outside, a compression unit including compression gas channels connected from the compression gas inlet to the compression gas outlet, a motor to rotate the first and second impellers, and including a rotary shaft, a housing including a motor accommodation space, and an intercooler including air-cooling channels provided on the compression gas channels located between the first and second impellers, wherein the air-cooling channels penetrate through and are hidden in the housing. According to the present invention, the turbo compressor's size may be reduced by integration of the intercooler and the housing, and damage of the intercooler due to external impact may be prevented.

Abstract: A blowing system includes: a blower; a case including: a blower receiving portion for receiving a heat source of the blower; a gas inlet for suctioning the gas from the outside; a gas passage connected from the gas inlet to a blower inlet; and an inverter receiving portion in which an inverter are installed; and a cooling member for cooling the inverter by using air, and has one end coupled to the inverter and the other end exposed to the gas passage, wherein the blower receiving portion is spatially separated from the gas passage, and the gas flows through the gas passage due to a suctioning force of an impeller, and the cooling member is cooled by the gas. According to the present invention, without separate cooling fans, the inverter may be quickly cooled only with the flow of gas generated by the impeller.

Abstract: Provided is a turbo compressor for compressing a gas such as air and supplying the compressed gas to outside, the turbo compressor including a compression gas inlet for sucking the gas, a first impeller, a second impeller, a compression gas outlet for discharging to outside, a compression unit including compression gas channels connected from the compression gas inlet to the compression gas outlet, a motor to rotate the first and second impellers, and including a rotary shaft, a housing including a motor accommodation space, and an intercooler including air-cooling channels provided on the compression gas channels located between the first and second impellers, wherein the air-cooling channels penetrate through and are hidden in the housing. According to the present invention, the turbo compressor's size may be reduced by integration of the intercooler and the housing, and damage of the intercooler due to external impact may be prevented.

Abstract: A thrust foil air bearing includes a bottom plate comprising a coupling portion protruding toward a rotating portion, an intermediate plate arranged above an upper surface of the bottom plate and comprising a bump foil that is elastically deformable and a first through-hole through which the coupling portion passes, and a top plate arranged above an upper surface of the intermediate plate, facing the rotating portion, and comprising a top foil arranged above the bump foil and contactable with the rotating portion and a second through-hole, through which the coupling portion passes, formed at a position corresponding to the first through-hole. The coupling portion couples the bottom plate, the intermediate plate, and the top plate to one another by passing through the first through-hole and the second through-hole. Thus, the thrust foil air bearing may be rapidly assembled without a complicated process such as welding.

Abstract: A journal foil air beating includes: a top foil located to face an outer circumferential surface of a rotating shaft and surround the rotating shaft; a bump foil being an elastically deformable member and located to surround the top foil; a base foil located to surround the bump foil, and a coupling unit configured to couple the first end portion of the top foil, the first end portion of the bump foil, the first end portion of the base foil, and the second end portion of the base foil, wherein the base foil, the bump foil, and the top foil are modularized into one piece by the coupling unit. According to the present invention, the journal foil air bearing may be easily assembled in advance and modularized into one piece, may be very conveniently mounted or disassembled on a bearing housing in a workplace.