CN202630528U

CN202630528U - Efficient heat regeneration device

Info

Publication number: CN202630528U
Application number: CN 201220141046
Authority: CN
Inventors: 陈曦; 夏宇栋; 刘业凤; 王强
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2012-04-05
Filing date: 2012-04-05
Publication date: 2012-12-26
Anticipated expiration: 2022-04-05

Abstract

The utility model discloses an efficient heat regeneration device. The heat regeneration device comprises a heat regenerator sleeve and axial filler inside the heat regenerator sleeve, wherein the axial filler is an entirety formed by an etching metal sheet in a wrapping mode, the etching metal sheet comprises a plurality of non-etching cross bars, a plurality of vertical bars with half-etching front faces, and a plurality of connecting arms with half-etching back faces, each vertical bar is arranged at one side of each cross bar, and each connecting arm is installed between two vertical bars which are adjacent and not connected. The heat regeneration device can lower loss of flow resistance, and reduces volume of the heat regenerator. The etching style of the heat regeneration device extends heat conduction path and reduces heat conduction area, and therefore axial heat conduction loss is reduced.

Description

Efficient regenerative apparatus

Technical field

The utility model belongs to the low-temperature refrigeration technology field, relates to a kind of regenerator, relates in particular to a kind of efficient regenerative apparatus; Simultaneously, the utility model also relates to the assembly method of above-mentioned regenerator.

Background technology

Cryo Refrigerator many departments of science and technology in modern times obtains important use; For example military Infrared Detectors; Low temperature thermal imaging system in the cryogenic medicine, the miniature cryoprobe of low temperature; The cooling of the photoelectricity remote sensing element in the space technology, the cooling of super conductive filter in the 3G communication, cryogenic vacuum pumps etc. all need regenerating type low-temperature refrigerator.Regenerator is the critical component of Regenerative Gas Refrigeration Machine, and is bigger 10～50 times than the refrigerating capacity of Gas Refrigerator through the heat that regenerator transmitted, so the quality of its performance has decisive influence to the performance of Gas Refrigerator.The wire netting sheet of high order number, big thermal capacity is housed in it.In the refrigeration machine course of work; Refrigerant gas alternation in regenerator flows; With the regenerator matrix be media implementation in refrigeration machine to the hot junction heat of Compressed Gas, the absorption of cold junction cold, between refrigeration machine cold junction (chamber) and hot junction (chamber), set up bigger thermograde.

Regenerator be heat transfer element be again resistance element, the loss on the regenerator (backheat loss, flow resistance loss, axial thermal conductivity loss etc.) is the main loss in the refrigeration machine, the structure of regenerator and performance have key influence to the performance of Cryo Refrigerator.The optimization direction of regenerator is exactly on the basis of improving effectiveness of regenerator, reduces flow resistance, reduces axial thermal conductivity and empty volume.

The present research of regenerator focuses mostly on regenerator matrix interstitital texture and filler material, and radially the advantage of filled type regenerator is that the axial thermal conductivity loss is little, but shortcoming is that radially conductive heat loss is big, and flow resistance is big; Axially the advantage of filled type regenerator is that radially conductive heat loss is little, and flow resistance is little, but its axial thermal conductivity loss is big.

The utility model content

The utility model technical problem to be solved is: a kind of efficient regenerative apparatus is provided, can improves effectiveness of regenerator, reduce flow resistance, reduce the axial thermal conductivity loss.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of efficient regenerative apparatus, said regenerative apparatus comprises: regenerator cover and inner axial filler thereof; The integral body that axial filler is formed by etching metal thin slice winding up; Said etching metal thin slice comprises: the horizontal stripe of some not etchings, the vertical bar that some fronts etch partially, the linking arm that some back sides etch partially; Said vertical bar is arranged on the side of horizontal stripe, linking arm be arranged at two adjacent but between the disjunct vertical bar.

As a kind of preferred version of the utility model, the axial filler that winding up becomes closely contacts with regenerator cover inwall; Axially filler is formed sheet metal thickness 0.04mm～0.10mm by the sheet metal etching.

As a kind of preferred version of the utility model, the vertical bar that etches partially, the thickness of linking arm are about the half the of sheet metal thickness, and spacing b's is 0.3～0.6 than a/b scope between vertical bar width a and the vertical bar; Spacing d's between horizontal stripe width c and the horizontal stripe is 0.3～0.6 than c/d scope; The scope that etches partially the angle between linking arm and the horizontal stripe is 20 °～60 °.

The beneficial effect of the utility model is: the efficient regenerative apparatus that the utility model proposes; Adopt the regenerator of the axial filled type structure of etching metal thin slice; That axially fills wraps tightly the axial filler that forms by the etching metal thin slice and can reduce fluid resistance losses; And reducing the empty volume of regenerator, its etching pattern has prolonged the heat conduction approach and has reduced heat-conducting area, thereby has reduced the axial thermal conductivity loss.The axial filled type regenerator of this etching metal thin slice can be realized high effectiveness of regenerator, low flow resistance, little axial thermal conductivity loss, less empty volume, can greatly improve the efficient of regenerating type low-temperature refrigerator.

Simultaneously, the utility model can adopt multiple metal etch pattern, also can adjust the actual demand that etched size satisfies regenerating type low-temperature refrigerator.Can accurately guarantee the size and the uniformity of runner every bit, in very large range regulate the ratio of solid volume and void volume and the pressure reduction between the runner, can not produce metal fragment and get into working medium fluid infringement regenerator.

Description of drawings

Fig. 1 is the efficient regenerative apparatus structural representation of the utility model;

Fig. 2-1, Fig. 2-2 are respectively the double-edged structural representation of etching metal flake stuffing of axial filling;

Fig. 3 is the etch slide partial enlarged drawing;

Fig. 4 is an etch slide front partial 3 d sketch map;

Fig. 5 is an etch slide back side partial 3 d sketch map;

Fig. 6 is the deflector profile.

Accompanying drawing marks as follows:

The specific embodiment

Specify the preferred embodiment of the utility model below in conjunction with accompanying drawing.

Embodiment one

See also Fig. 1, the utility model has disclosed a kind of efficient regenerative apparatus that is used for regenerating type low-temperature refrigerator, comprises regenerator cover 108 and inner axial filler 107 thereof.Wherein regenerator cover 108 adopts the polyimides synthetic material to make, and axially filler 107 is to form (as shown in Figure 2) by the tight winding up of etching metal thin slice.Etching metal flake stuffing material can be phosphor bronze or stainless steel in the regenerator.The etching spacing is more little, and porosity is more little, can cause the flow resistance of refrigerant gas in regenerator to increase; The etching spacing is big more, and fluid resistance losses is more little.

Fig. 2-1, Fig. 2-2 are the winding up formula regenerator matrix structural representation of axially filling; The manufacturing process of the circular regenerator matrix of winding up formula is: be axis with width with a stainless steel wire be that the etching metal thin slice of m closely twines winding up (shown in Fig. 2-1, Fig. 2-2) and becomes cylindrical; Cylindrical shaft after the winding is m to the height of filler 107; Axially filler 107 external diameters equate with regenerator cover internal diameter; Wherein, axially filler 107 comprises axle center stainless steel wire 201 and axle center stainless steel wire 201 woven wire two parts of winding up on every side.

When the assembling regenerator matrix, the axial filler that winding up becomes closely contacts with regenerator cover inwall; Axially filler is formed by the sheet metal etching, and sheet metal thickness 0.04mm～0.10mm, material are phosphor bronze or stainless steel,, the back side respectively etching positive to sheet metal.

Engraving method comprises: etching metal thin slice front-side etch pattern 202 (Fig. 3 and shown in Figure 4): wherein vertical bar 301 not etchings, and horizontal stripe 302 fronts etch partially, and linking arm 303 back sides etch partially between the horizontal stripe, and remainder 304 total eclipses are carved.Etching metal thin slice reverse side etching pattern 203 (Fig. 3 and shown in Figure 5): vertical bar 301 not etchings, linking arm 303 etches partially between the vertical bar 301, and all the other 304 total eclipses are carved.

Sheet metal after the etching comprises: some not etched vertical bars 301, the horizontal stripe 302 that some fronts etch partially, the linking arm 303 that some back sides etch partially; Said vertical bar 301 is arranged on the side of horizontal stripe 302, linking arm 303 be arranged at two adjacent but between the vertical bar 301 of do not link to each other (promptly not on the same horizontal stripe).Etching partially thickness, to be about sheet metal thickness half the, the vertical bar width be between a and the vertical bar spacing b be 0.3～0.6 than a/b scope; The horizontal stripe width is that the scope of the ratio c/d of the spacing d between c and the horizontal stripe is 0.3～0.6; The scope that etches partially the angle between linking arm and the horizontal stripe is 20 °～60 °.

The concrete assembly method of the regenerator of the utility model is: at first, regenerator connecting rod 112 is overlapped 108 bottoms from regenerator assemble, wherein regenerator cover 108 and the assembling connected mode of connecting rod 112 be for being threaded, the adding fluid sealant at the thread seal place; Then, overlap the 108 tops hot junction deflector 109 of packing into from regenerator, wherein deflector 109 bottoms in hot junction closely contact with small end portion; Then, overlap the 108 tops axial filler 107 of packing into from regenerator, regenerator matrix load accomplish after, overlap the 108 tops cold junction deflector 104 of packing into from regenerator, wherein cold junction deflector 104 bottoms and top radially filler closely contact; At last, overlap the 108 tops regenerator end socket 102 of packing into, wherein, adopt between regenerator cover 108 and the regenerator end socket 102 and be threaded adding low temperature seal glue at the thread seal place from regenerator; With tightening the groove 101 that erecting tools inserts the end socket top, the regenerator end socket to be tightened, its end socket 102 bottoms closely contact with deflector top, hot junction.So far, regenerator assembled.

The course of work of this regenerator in regenerating type low-temperature refrigerator is: refrigerant gas is by the hot junction compression chamber pod apertures 111 on the connecting rod 112 end seats of flowing through; Flow into the hot junction hybrid chamber 114 of 110 of end seat and hot junction deflector pod apertures; The refrigerant gas pod apertures 110 (the deflector profile is as shown in Figure 6) on the hot junction deflector 109 of flowing through then; Flow to the regenerator matrix 107 that the etch slide winding up is axially filled; In high temperature refrigerant gas was flowed through the process of regenerator matrix 107, to regenerator matrix 107 heat releases, refrigerant gas flowed into cold junction hybrid chamber 113 then; Flow through again pod apertures 105 on the cold junction deflector 104; Get into the toroidal cavity of 104 of regenerator end socket 102 and cold junction deflectors, refrigerant gas is flowed through and is overlapped the water conservancy diversion circular hole 103 that evenly was provided with in 108 1 weeks at regenerator then, gets into the expansion chamber swell refrigeration at last; The regenerator matrix 107 of flowing through is returned on former road behind the refrigerant gas swell refrigeration, absorbs the heat that is stored in the regenerator, gets into the hot junction compression chamber, accomplishes a kind of refrigeration cycle.

In sum; The axial filled type regenerator of etching metal thin slice that the utility model proposes; Adopt the regenerator of the axial filled type structure of etching metal thin slice, that axially fills wraps tightly the axial filler that forms by the etching metal thin slice and can reduce fluid resistance losses, and reduces the empty volume of regenerator; Its etching pattern has prolonged the heat conduction approach and has reduced heat-conducting area, thereby has reduced the axial thermal conductivity loss.The axial filled type regenerator of this etching metal thin slice can be realized high effectiveness of regenerator, low flow resistance, little axial thermal conductivity loss, less empty volume, can greatly improve the efficient of regenerating type low-temperature refrigerator.

Here description of the utility model and application is illustrative, is not to want the scope of the utility model is limited in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation of spirit that does not break away from the utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to the embodiment that is disclosed.

Claims

1. an efficient regenerative apparatus is characterized in that, said regenerative apparatus comprises: regenerator cover and inner axial filler thereof; Axially filler is an integral body that is formed by etching metal thin slice winding up;

Said etching metal thin slice comprises: the horizontal stripe of some not etchings, the vertical bar that some fronts etch partially, the linking arm that some back sides etch partially; Said vertical bar is arranged on the side of horizontal stripe, linking arm be arranged at two adjacent but between the disjunct vertical bar.

2. efficient regenerative apparatus according to claim 1 is characterized in that:

The vertical bar that etches partially, the thickness of linking arm are about the half the of sheet metal thickness, and spacing b's is 0.3～0.6 than a/b scope between vertical bar width a and the vertical bar; Spacing d's between horizontal stripe width c and the horizontal stripe is 0.3～0.6 than c/d scope; The scope that etches partially the angle between linking arm and the horizontal stripe is 20 °～60 °.