Abstract: A check valve includes a container body and a valve body. The container body includes a cylindrical valve-body housing portion, an inlet portion, an outlet portion, and a valve seat. The inlet portion is formed at one end portion of the valve-body housing portion, and the outlet portion is formed at the other end portion of the valve-body hosing portion. The valve seat is protruded at an inner circumferential surface of the valve-body housing portion. The valve body is provided in the container body and movable in the axial direction thereof.

Abstract: A check valve unit 1 includes: a container body 2 including a valve body housing portion 21, a valve seat 22, and a protruding portion 23, the valve body housing portion 21 having a cylindrical shape, the valve seat 22 being formed at one end portion of the valve body housing portion 21 and protruding from an inner peripheral surface of the valve body housing portion 21, the protruding portion 23 being formed at the other end portion of the valve body housing portion 21 and protruding from the inner peripheral surface of the valve body housing portion 21; and a valve body 3 including a valve portion 31 and a guide portion 32 and disposed in the container body 2, the valve portion 31 coming into contact with the valve seat 22 at a time of preventing backflow of refrigerant, the guide portion 32 including a plurality of blades.

Abstract: A check valve unit 1 includes: a container body 2 including a valve body housing portion 21, a valve seat 22, and a protruding portion 23, the valve body housing portion 21 having a cylindrical shape, the valve seat 22 being formed at one end portion of the valve body housing portion 21 and protruding from an inner peripheral surface of the valve body housing portion 21, the protruding portion 23 being formed at the other end portion of the valve body housing portion 21 and protruding from the inner peripheral surface of the valve body housing portion 21; and a valve body 3 including a valve portion 31 and a guide portion 32 and disposed in the container body 2, the valve portion 31 coming into contact with the valve seat 22 at a time of preventing backflow of refrigerant, the guide portion 32 including a plurality of blades.

Abstract: A check valve includes a container body and a valve body. The container body includes a cylindrical valve-body housing portion, an inlet portion, an outlet portion, and a valve seat. The inlet portion is formed at one end portion of the valve-body housing portion, and the outlet portion is formed at the other end portion of the valve-body hosing portion. The valve seat is protruded at an inner circumferential surface of the valve-body housing portion. The valve body is provided in the container body and movable in the axial direction thereof.

Abstract: A heat exchanger includes plural flat tubes each having a flat cross section, and plural flat-tube U-bends each having a flat cross section and a U-shape in external appearance. Plural flat-tube columns each made up of the plural flat tubes installed in plural tiers in a set direction are arranged in a direction intersecting the set direction and in a staggered manner. Each of the plural flat-tube U-bends is placed in a pair of coupling portions of the plural flat tubes. Each of the pair of coupling portions is placed in one of a pair of the plural flat-tube columns. The plural flat-tube U-bends are twisted such that major axes of flat cross sections in both end portions of each of the plural flat-tube U-bends are oriented in the same directions as major axes of flat cross sections of the plural flat tubes connected to the both end portions.

Abstract: A heat exchanger includes plural flat tubes each having a flat cross section, and plural flat-tube U-bends each having a flat cross section and a U-shape in external appearance. Plural flat-tube columns each made up of the plural flat tubes installed in plural tiers in a set direction are arranged in a direction intersecting the set direction and in a staggered manner. Each of the plural flat-tube U-bends is placed in a pair of coupling portions of the plural flat tubes. Each of the pair of coupling portions is placed in one of a pair of the plural flat-tube columns. The plural flat-tube U-bends are twisted such that major axes of flat cross sections in both end portions of each of the plural flat-tube U-bends are oriented in the same directions as major axes of flat cross sections of the plural flat tubes connected to the both end portions.