Thermoacoustic temperature control system

A thermoacoustic temperature control system comprising:

• a piping with a working gas encapsulated therein;
• a prime mover incorporated in the piping;
• and
• a load incorporated in the piping,
• the prime mover including a prime mover-side heat accumulator and prime mover-side heat exchangers connected to opposite end portions, in an extension direction of the piping, of the prime mover-side heat accumulator,
• the load including a load-side heat accumulator and load-side heat exchangers connected to opposite end portions, in the extension direction of the piping, of the load-side heat accumulator,
• in the prime mover, acoustic energy being generated inside the prime mover-side heat accumulator based on thermal energy provided from an outside to one of the prime mover-side heat exchangers, and in the load, the working gas having a predetermined temperature produced based on the acoustic energy transmitted to the load-side heat accumulator through the piping is supplied to the load-side heat accumulator, to adjust a temperature of an object connected to the load, wherein:
• the piping includes a looped piping portion having a looped shape and a branch piping portion branching from a branching point that is a part of the looped piping portion;
• the prime mover is incorporated in the branch piping portion and the load is incorporated in the looped piping portion;
• a blocking film that prohibits the working gas from passing therethrough and is capable of vibrating along with vibration of the working gas is inserted at a position in a vicinity of the branching point, in a part of the looped piping portion between (i) one of the load-side heat exchangers that is on a low temperature side, the one of the load-side heat exchangers being connected to an end portion on a low temperature side of the opposite end portions, in the extension direction of the piping, of the load-side heat accumulator, and the (ii) branching point;
• each of respective end portions of three parts of the piping, the three parts converging from three directions toward the branching point are connected to a corresponding connection end portion of three connection end portions of a three-way piping joint;
• and
• a blocking film sub-assembly including the blocking film and a pair of ring-like holding members that hold the blocking film so as to sandwich the blocking film from opposite sides is directly inserted between an end portion of a part of the piping, the part extending from the one of the load-side heat exchangers that is on the low temperature side toward the branching point and the corresponding connection end portion of the connection end portions of the three-way piping joint.