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Pulse tube refrigerator with multiple plate heat exchangers
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A technology of plate heat exchanger and pulse tube refrigerator, which is applied in refrigerators, gas circulation refrigerators, refrigeration and liquefaction, etc., to achieve the effects of easy assembly, favorable heat exchange, and enhanced heat exchange
Active Publication Date: 2019-06-11
TONGJI UNIV
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The gas reciprocates between the regenerator and the regenerator, and the cooling heat exchanger is interposed between the regenerator and the regenerator, which not only plays the role of heat exchange, but also serves as a bridge between the regenerator and the regenerator. The function of the gas homogenizer can make the gas flow into the regenerator and the pulse tube evenly, and improve the cooling capacity. The general cooling capacity heat exchanger is not suitable for this situation.
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Embodiment 1
[0047] In this embodiment, the structure of the cold head of the pulse tube refrigerator is as follows figure 1 As shown, among them, the cooling capacity heat exchanger adopts multiple plate heat exchangers, and the multiple plate heat exchangers are composed of three slit heat exchange plates and a fixing piece.
[0048] Such as figure 1 As shown, multiple plate heat exchangers are installed between the pulse tube 13 and the regenerator 14 .
[0049] Such as Figure 1 to Figure 4 As shown, the multi-plate heat exchanger in this embodiment consists of three first heat exchange plates 2, second heat exchange plates 3, and third heat exchange plates 4 arranged in parallel, and the three heat exchange plates are assembled into a The integral fixing part 1 is composed. In this embodiment, both the first heat exchange plate 2 and the third heat exchange plate 4 are end heat exchange plates for heat exchange, and the second heat exchange plate 3 is an intermediate heat exchange ...
Embodiment 2
[0061] Such as Figure 9 , 10 , 11, the difference from Embodiment 1 is that in this embodiment, the multi-plate heat exchanger adopts four slit heat exchange plates, and the first heat exchange plate 2 and the second heat exchange plate are arranged in parallel by four The heat exchange plate 3, the third heat exchange plate 4, the fourth heat exchange plate 5 and the fixing part 1 which assembles the four heat exchange plates into a whole are composed. In this embodiment, the first heat exchange plate 2 and the fourth heat exchange plate 5 are both end heat exchange plates that play a role in heat exchange, and the second heat exchange plate 3 and the third heat exchange plate 4 are middle heat exchange plates that play a role in gas uniformity. heat exchange plate. The diameter of the middle heat exchange plate is equivalent to that of the corresponding end heat exchange plate, that is, the diameter of the second heat exchange plate 3 is equivalent to the diameter of the ...
Embodiment 3
[0066] Such as Figure 12 As shown, the difference from Embodiment 1 is that in this embodiment, the heat exchange plate is a perforated heat exchange plate 11, and a plurality of holes 12 are provided on the perforated heat exchange plate 11, and the aperture and opening ratio of the holes 12 can be Adjust as needed.
[0067] When a plurality of heat exchange plates are arranged, the holes between two adjacent hole heat exchange plates are staggered, which is beneficial to improve the heat exchange efficiency. The heat exchange plate of this structure can also make the heat exchanger have the advantages of good heat exchange effect and uniform air flow.
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Abstract
The invention relates to a pulse tube refrigerator provided with a multi-plate type heat exchanger. The pulse tube refrigerator provided with the multi-plate type heat exchanger comprises a pulse tube, a cold heat exchanger and a heat regenerator which are sequentially connected, wherein the cold heat exchanger is the multi-plate type heat exchanger and is composed of two end part heat exchanging plates and an intermediate heat exchanging plate; the two end part heat exchanging plates for exchanging heat are correspondingly connected to the pulse tube and the heat regenerator; the intermediate heat exchanging plate for homogenizing air is arranged between the two end part heat exchanging plates; the end part heat exchanging plates and the intermediate heat exchanging plate are assembled as a whole through fixing parts; air channels on two adjacent heat exchanging plates are crosswise positioned. Compared with the prior art, the pulse tube refrigerator provided with the multi-plate type heat exchanger has the advantages that a plurality of slit type or hole type heat exchanging plates which are crosswise are adopted in the heat exchanging device, so that the air flowing resistance can be reduced, and the air can flow uniformly; meanwhile, adjacent slits are vertical or adjacent holes are staggered, so that the heat exchanging between the air and the heat exchanger can be improved; the pulse tube refrigerator provided with the multi-plate type heat exchanger has the characteristics of being small in air flowing resistance, and good in heat exchanging effect; and various modes such as a linear pulse tube refrigerator and a U-shaped pulse tube refrigerator are provided.
Description
technical field [0001] The invention relates to a pulse tube refrigerator, in particular to a pulse tube refrigerator using multiple plate heat exchangers. Background technique [0002] Since the invention of the small-hole pulse tube refrigerator in the 1980s, there have been various forms such as two-way inlet type, double-piston type, four-valve type, and inertial tube type. The performance of the pulse tube refrigerator is continuously improved with the improvement of the phase modulation mechanism at the hot end of the pulse tube. The pulse tube refrigerator has the advantages of good stability and no moving parts at the low temperature end. With the continuous improvement of efficiency, pulse tube refrigerators are gradually replacing G-M and Stirling refrigerators and becoming the mainstream low-temperature refrigerators in the market. [0003] In addition to the improvement of the phase adjustment mechanism, the optimization of the cooling heat exchanger of the cry...
Claims
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Application Information
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