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CN-121990269-A - Stirling cold accumulation separation type phase change material transfer device

CN121990269ACN 121990269 ACN121990269 ACN 121990269ACN-121990269-A

Abstract

The application discloses a Stirling cold accumulation separation type phase change material transfer device which comprises a Stirling refrigerator, a constant temperature phase change material transfer box and a connecting and fixing cold guide assembly, wherein the Stirling refrigerator comprises a cold head, the connecting and fixing cold guide assembly comprises a cold head clamp arranged on the cold head, a first cold guide aluminum block, a second cold guide aluminum block, a pair of first magnet rings and a pair of second magnet rings, the first cold guide aluminum block is in contact connection with an inner container of the transfer box, the second cold guide aluminum block is connected with the cold head clamp, the Stirling refrigerator is detachably connected with the constant temperature phase change material transfer box through the first magnet rings encircling the first cold guide aluminum block and the second magnet rings encircling the second cold guide aluminum block, and the transfer box of the transfer device and the Stirling refrigerator adopt a magnetic adsorption connection mode, so that the Stirling refrigerator can be rapidly separated from the transfer box after high-efficiency cold accumulation is realized through the Stirling refrigerator.

Inventors

  • Xiang Hanzhen
  • Gu Wanjia
  • LI JINCHAO
  • MENG WEN

Assignees

  • 苏州华冷科技有限公司

Dates

Publication Date
20260508
Application Date
20260410

Claims (10)

  1. 1. A Stirling cold accumulation separation type phase change material transfer device is characterized by comprising a Stirling refrigerator, a constant temperature phase change material transfer box and a connecting and fixing cold guide assembly, wherein, The Stirling refrigerator comprises a cold head (200), wherein the connecting and fixing cold guide assembly comprises a cold head clamp (300), a first cold guide aluminum block (401), a second cold guide aluminum block (402) and a pair of first magnet rings (501) and second magnet rings (502) which are arranged on the cold head (200); the first cold-conducting aluminum block (401) is in contact connection with the transfer box inner container (101), the second cold-conducting aluminum block (402) is connected with the cold head clamp (300), and the Stirling refrigerator is detachably connected with the constant temperature phase change material transfer box through a first magnet ring (501) encircling the first cold-conducting aluminum block (401) and a second magnet ring (502) encircling the second cold-conducting aluminum block (402), so that cold generated by the Stirling refrigerator is transferred to the transfer box inner container (101) through the first cold-conducting aluminum block (401) and the second cold-conducting aluminum block (402).
  2. 2. The transfer device according to claim 1, wherein the first cold-conducting aluminum block (401) comprises a first cylindrical cold-conducting contact portion, a first cylindrical connecting portion, and a first flange protruding outward from a bottom surface of the first cylindrical connecting portion in a radial direction of the first cylindrical connecting portion, one circular bottom surface of the first cylindrical cold-conducting contact portion is attached to a surface of the transfer box inner container (101), and a curved side surface of the first cylindrical connecting portion surrounds the first magnet ring (501).
  3. 3. The transfer device of claim 2, wherein the second cold-conducting aluminum block (402) comprises a second cylindrical connecting portion and a second flange protruding outwardly from a bottom surface of the second cylindrical connecting portion in a radial direction of the second cylindrical connecting portion, the curved side of the second cylindrical connecting portion surrounding the second magnet ring (502).
  4. 4. The transfer device of claim 1, wherein the stirling cooler further comprises a housing assembly, a cylinder assembly, a piston assembly, and a linear motor disposed within the housing assembly; the cylinder assembly comprises an integrated cylinder (32), the piston assembly comprising a power piston mechanism comprising a power piston (30); The linear motor sequentially comprises an inner magnetic yoke (28), a magnetic ring (29) and an outer magnetic yoke (11) from inside to outside along the radial direction of the linear motor, wherein the outer magnetic yoke (11) is provided with a concave part facing the magnetic ring (29), the concave part is used for winding a coil (10), the lower end of the magnetic ring (29) is provided with a magnetic ring support frame (26), the magnetic ring support frame (26) is connected with a power piston (30), and when the coil (10) is electrified and the magnetic ring (29) interact, the linear reciprocating motion of the magnetic ring (29) drives the magnetic ring support frame (26) to do linear reciprocating motion, so that the power piston (30) is driven to do linear reciprocating motion in an integrated cylinder (32).
  5. 5. The transfer device of claim 4, wherein the power piston mechanism further comprises a power plate spring (24), the power plate spring (24) being connected to the magnet ring support (26) by a first connection.
  6. 6. The transfer device of claim 5, wherein the power piston (30) is an annular member, the power piston (30) comprising a central cavity, the piston assembly further comprising a discharge piston mechanism comprising a first discharge piston (33) and a discharge piston connecting rod (31), the discharge piston connecting rod (31) passing sequentially through the power leaf spring (24), the magnet ring support (26), the central cavity of the power piston (30) and the compression cavity of the terlin refrigerator in an axial direction of the discharge piston connecting rod (31) and being connected to the first discharge piston (33).
  7. 7. The transfer device according to claim 5, wherein the magnetic ring support (26) comprises a first connecting portion (261) and a second connecting portion (262), the first connecting portion (261) is annular, the first connecting portion (261) is substantially perpendicular to the second connecting portion (262), the first connecting portion (261) is connected to the lower end of the magnetic ring (29), and the upper surface of the second connecting portion (262) is connected to the lower surface of the power piston (30).
  8. 8. The transfer device according to claim 7, wherein a motor fixing structure is further arranged in the shell assembly, the motor fixing structure comprises a soft magnetic fixing frame (13), the upper end face of the soft magnetic fixing frame (13) is connected with the outer magnetic yoke (11), and the lower end face of the soft magnetic fixing frame (13) is connected with the power plate spring (24).
  9. 9. The transfer device of claim 7, further comprising a cold finger assembly coaxially disposed at an upper end of the housing assembly, the cold finger assembly comprising a cold finger base (8) and a hot side heat sink (7), the hot side heat sink (7) being disposed above the cold finger base (8), the integrated cylinder (32) being connected to the cold finger base (8).
  10. 10. The transfer device of claim 9, wherein the integrated cylinder (32) comprises a first cylinder subsection, a second cylinder subsection and a third cylinder subsection, the first cylinder subsection being located between the power piston (30) and an inner yoke (28) in the radial direction, the second cylinder subsection being connected with the cold finger base (8).

Description

Stirling cold accumulation separation type phase change material transfer device Technical Field The application relates to the field of low-temperature technology and cold chain transportation equipment, in particular to a Stirling cold accumulation separation type phase change material transfer device. Background In the fields of temperature sensitivity such as biological medicine, sample detection, vaccine transportation and the like, a constant temperature transfer box is a key cold chain transportation device. Conventional thermostats typically rely on phase change material cold storage plates or built-in compressors that are pre-frozen in a freezer for cooling. The former needs to rely on large-scale refrigeration house equipment, is inconvenient to operate and has poor flexibility, and the latter makes the transfer box huge in volume and heavy in weight, and continuously operates the compressor to consume energy in the transportation process, generates vibration and noise, is unfavorable for the transportation of precise articles, and also increases the operation cost and the failure rate. Therefore, research and development of equipment capable of rapidly and conveniently accumulating cold, capable of being separated from a refrigerating unit after cold accumulation is finished so as to realize light-weight, low-cost and long-time constant-temperature transportation has important practical significance. The Stirling refrigerator is a device for realizing refrigeration by utilizing periodic compression and expansion of gas, and has the advantages of high theoretical efficiency, adoption of inert gas as working medium, environmental friendliness and the like. However, the conventional stirling cooler mostly adopts a rotating motor-crank connecting rod structure, and has the problems of large mechanical friction, limited reliability and difficult further improvement of efficiency. In the existing linear driving Stirling refrigerator, the matching degree of the linear motor structure and the Stirling mechanism part is insufficient, so that the electromagnetic efficiency is low, the high-order vibration component of the mover is large, and the noise and vibration of the whole refrigerator are caused. Therefore, development of a Stirling cold accumulation separation type phase change material transfer device is urgently needed in the field, and a transfer box of the transfer device and a Stirling refrigerator adopt a magnetic adsorption connection mode, so that the transfer box can be rapidly separated from the transfer box after high-efficiency cold accumulation is realized through the Stirling refrigerator. Disclosure of Invention The application aims to provide a Stirling cold accumulation separation type phase change material transfer device, wherein a transfer box of the transfer device and a Stirling refrigerator are connected in a magnetic adsorption mode, and can be quickly separated from the transfer box after high-efficiency cold accumulation is realized through the Stirling refrigerator. The application provides a Stirling cold accumulation separation type phase change material transfer device, which comprises a Stirling refrigerator, a constant temperature phase change material transfer box and a connecting and fixing cold guide assembly, wherein, The Stirling refrigerator comprises a cold head, and the connecting and fixing cold guide assembly comprises a cold head clamp, a first cold guide aluminum block, a second cold guide aluminum block, a pair of first magnet rings and a pair of second magnet rings, wherein the cold head clamp, the first cold guide aluminum block, the second cold guide aluminum block and the pair of first magnet rings are arranged on the cold head; The first cold aluminum block is connected with the transfer box liner in a contact manner, the second cold aluminum block is connected with the cold head clamp, and the Stirling refrigerator is detachably connected with the constant temperature phase change material transfer box through a first magnet ring encircling the first cold aluminum block and a second magnet ring encircling the second cold aluminum block, so that cold produced by the Stirling refrigerator is transferred to the transfer box liner through the first cold aluminum block and the second cold aluminum block. In another preferred embodiment, the first cold-conducting aluminum block includes a first cylindrical cold-conducting contact portion, a first cylindrical connecting portion, and a first flange protruding outward from a bottom surface of the first cylindrical connecting portion in a radial direction of the first cylindrical connecting portion, wherein a circular bottom surface of the first cylindrical cold-conducting contact portion is attached to a surface of the inner container of the transfer box, and the curved surface side surface of the first cylindrical connecting portion is surrounded by the first magnet ring. In another preferred embodiment, th