Stator-side member and vacuum pump

A vacuum pump, comprising:

• a housing in which an inlet port and an outlet port are formed;
• a stator portion used in a second gas transfer mechanism of the vacuum pump, the stator portion arranged inside the housing and comprising a plurality of stator blades;
• a rotating shaft that is contained in the housing and supported in a rotatable manner;
• a rotating body that is fixed to the rotating shaft and which comprises a plurality of rotor blades;
• and
• a stator-side member that is used in a first gas transfer mechanism, is downstream of the plurality of stator blades of the second gas transfer mechanism and is manufactured from a first material having a coefficient of thermal conductivity lower than that of a second material, wherein a part made of the second material coming into contact with the stator-side member, wherein
• the housing comprises a casing and a base,
• the plurality of stator blades is fixed by a spacer,
• the second material is a material of the base,
• the first material is configured to accumulate heat in the stator-side member, and
• during operation of the vacuum pump, a first temperature of the first material is greater than a second temperature of the second material.

A vacuum pump, comprising:

• a housing in which an inlet port and an outlet port are formed;
• a stator portion used in a second gas transfer mechanism of the vacuum pump, the stator portion arranged inside the housing and comprising a plurality of stator blades;
• a rotating shaft that is contained in the housing and supported in a rotatable manner;
• a rotating body that is fixed to the rotating shaft and which comprises a plurality of rotor blades;
• and
• a stator-side member that is used in a first gas transfer mechanism, is downstream of the plurality of stator blades of the second gas transfer mechanism and is manufactured from a first material being configured to accumulate heat in the stator-side member and having a coefficient of thermal conductivity lower than that of a second material, wherein a part made of the second material comes into contact with the stator-side member, wherein
• the housing comprises a casing and a base,
• the plurality of stator blades is fixed by a spacer,
• the second material is a material of the base,
• the coefficient of thermal conductivity of the first material is also lower than that of a third material, which opposes the stator-side member, of the rotating body, and
• during operation of the vacuum pump, a first temperature of the first material is greater than a second temperature of the second material.

A vacuum pump, comprising:

• a housing in which an inlet port and an outlet port are formed;
• a stator portion used in a second gas transfer mechanism of the vacuum pump, the stator portion arranged inside the housing and comprising a plurality of stator blades;
• a rotating shaft that is contained in the housing and supported in a rotatable manner;
• a rotating body that is fixed to the rotating shaft and which comprises a plurality of rotor blades;
• and
• a stator-side member that is used in a first gas transfer mechanism, is downstream of the plurality of stator blades of the second gas transfer mechanism and is manufactured from a first material being configured to accumulate heat in the stator-side member and having a coefficient of thermal conductivity lower than that of a second material, wherein a part made of the second material comes into contact with the stator-side member, wherein
• the housing comprises a casing and a base,
• the plurality of stator blades is fixed by a spacer,
• the second material is a material of the base,
• the first material is stainless steel, and
• during operation of the vacuum pump, a first temperature of the first material is greater than a second temperature of the second material.