Expansion valve device

An expansion valve device provided outside an air conditioning case in which an evaporator is disposed in an air conditioner for a vehicle, to be connected to a pipe through which a refrigerant flows from or to the evaporator, the expansion valve device comprising:

• an expansion valve body that depressurizes the refrigerant;
• and
• a casing in which the expansion valve body is housed, wherein
• the casing includes a tube portion having an opening through which the expansion valve body is able to pass, the tube portion being integrally formed to surround over an entire perimeter of the expansion valve body,
• the tube portion has
• an elastic holding portion formed of an elastic material and holding the expansion valve body by a reaction force due to elastic deformation by surrounding the entire perimeter of the expansion valve body,
• a support portion formed of a material having a higher rigidity than the elastic holding portion and supporting the elastic holding portion, at least a part of the support portion being exposed to outside of the casing,
• the support portion has a plurality of side frames respectively extending in an extending direction of the tube portion on both sides of the expansion valve body, and
• the plurality of side frames are provided between the elastic holding portion and the expansion valve body.

An expansion valve device provided outside an air conditioning case in which an evaporator is disposed in an air conditioner for a vehicle, to be connected to a pipe through which a refrigerant flows from or to the evaporator, the expansion valve device comprising:

• an expansion valve body that depressurizes the refrigerant;
• and
• a casing in which the expansion valve body is housed, wherein
• the casing includes a tube portion having an opening through which the expansion valve body is able to pass, the tube portion being integrally formed to surround over an entire perimeter of the expansion valve body,
• the tube portion has
• an elastic holding portion formed of an elastic material and holding the expansion valve body by a reaction force due to elastic deformation by surrounding the entire perimeter of the expansion valve body,
• a support portion formed of a material having a higher rigidity than the elastic holding portion and supporting the elastic holding portion, at least a part of the support portion being exposed to outside of the casing,
• the support portion has a lower frame extending in an extending direction of the tube portion to cover a lower surface of the expansion valve body, and
• the lower frame is provided inside the elastic holding portion.

An expansion valve device provided outside an air conditioning case in which an evaporator is disposed in an air conditioner for a vehicle, to be connected to a pipe through which a refrigerant flows from or to the evaporator, the expansion valve device comprising:

• an expansion valve body that depressurizes the refrigerant;
• and
• a casing in which the expansion valve body is housed, wherein
• the casing includes a tube portion having an opening through which the expansion valve body is able to pass, the tube portion being integrally formed to surround over an entire perimeter of the expansion valve body,
• the tube portion has
• an elastic holding portion formed of an elastic material and holding the expansion valve body by a reaction force due to elastic deformation by surrounding the entire perimeter of the expansion valve body,
• a support portion formed of a material having a higher rigidity than the elastic holding portion and supporting the elastic holding portion, at least a part of the support portion being exposed to outside of the casing,
• the casing has
• an opposing wall portion opposed to an end surface of the expansion valve body having an outflow opening through which the refrigerant flows into the evaporator,
• a wall opening formed in the opposing wall portion to expose the outflow opening of the end surface to outside of the casing, and
• an end seal portion provided on the opposing wall portion and in contact with the end surface to seal a gap between the opposing wall portion and the end surface.

An expansion valve device provided outside an air conditioning case in which an evaporator is disposed in an air conditioner for a vehicle, to be connected to a pipe through which a refrigerant flows from or to the evaporator, the expansion valve device comprising:

• an expansion valve body that depressurizes the refrigerant;
• and
• a casing in which the expansion valve body is housed, wherein
• the casing includes:
• a tube portion having an opening through which the expansion valve body is able to pass, the tube portion being integrally formed to surround over an entire perimeter of the expansion valve body, and
• a seal portion that blocks air from flowing between inside and outside of the casing at a portion connected to the evaporator,
• the tube portion has
• an elastic holding portion formed of an elastic material and holding the expansion valve body by a reaction force due to elastic deformation, and
• a support portion formed of a material having a higher rigidity than the elastic holding portion to surround the entire periphery of the expansion valve body and supporting the elastic holding portion, at least a part of the support portion being exposed to outside of the casing,
• the casing has
• an opposing wall portion opposed to an end surface of the expansion valve body having an outflow opening through which the refrigerant flows into the evaporator, and
• a wall opening formed in the opposing wall portion to expose a region of the end surface including the outflow opening to outside of the casing, and
• the seal portion includes an end seal portion provided on the opposing wall portion and in contact with the end surface to seal a gap between the opposing wall portion and the end surface.