Flow path forming device

A flow path forming device in which a fluid flows, comprising

• three or more components, wherein
• the three or more components include a first component, a second component and a third component,
• the first component and the second component form a flow path within which the fluid flows,
• the third component is attached to the first component and the second component,
• the first component includes a first joint face joined to the second component,
• the second component includes a second joint face joined to the first joint face,
• the second component is joined to the first component by the second joint face being joined to the first joint face,
• the third component is attached to the first component and the second component across a joint interface where the first joint face and the second joint face are joined to each other,
• the flow path forming device further comprises a mounting adjustment section configured to adjust an attachment position of the third component in at least one of a surface normal direction and a direction crossing the surface normal direction, the surface normal direction being perpendicular to the joint interface,
• the third component is attached to the first component and the second component with screws,
• the mounting adjustment section includes elastic sections made of an elastic material and including elastic section holes where the screws are inserted,
• central axes of the elastic section holes extend in a direction crossing the surface normal direction, and
• the third component is attached to the first component and the second component with the screws inserted into the elastic section holes.

A flow path forming device in which a fluid flows, comprising

• three or more components, wherein
• the three or more components include a first component, a second component and a third component,
• the first component and the second component form a flow path within which the fluid flows,
• the third component is attached to the first component and the second component,
• the first component includes a first joint face joined to the second component,
• the second component includes a second joint face joined to the first joint face,
• the second component is joined to the first component by the second joint face being joined to the first joint face,
• the third component is attached to the first component and the second component across a joint interface where the first joint face and the second joint face are joined to each other,
• the flow path forming device further comprises a mounting adjustment section configured to adjust an attachment position of the third component in at least one of a surface normal direction and a direction crossing the surface normal direction, the surface normal direction being perpendicular to the joint interface,
• the three or more components include
• flow-path sections that allow a fluid to flow between the third component and the flow path formed by the first component and the second component,
• flow-path insertion sections in which the flow-path sections are inserted, and
• sealing members configured to prevent leakage of the fluid from between the flow-path sections and the flow-path insertion sections, and
• the third component is attached to at least one of the first component and the second component through the flow-path sections.