CN2300054Y - Double-screw hollow ice collumn cold accumulator - Google Patents

Abstract

The utility model relates to a double-screw hollow ice column cold accumulator. A shell body forms a hollow columnar barrel shape. The outer surface of the cylindrical barrel-shaped shell wall is provided with a screw-thread groove. The inner surface of the cylindrical barrel-shaped shell wall is provided with a convex part corresponding to the groove. The utility model is characterized in that a columnar hollow column core is arranged on the center of the shell body and the center of the inner cavity of the shell body; the outer surface of the column core is provided with a screw-thread groove, and the inner surface of the column core is provided with a convex part corresponding to the groove; the outside of the upper end surface of the shell wall is 2-3 mm higher than the inside of the upper end surface of the shell wall; the shell bottom is a flat surface; the material of the shell body is high-density polyethylene with high heat conduction coefficient and good mechanical performance. Compared with the existing ice ball cold accumulator or the ice column cold accumulator, the utility model has the advantages of fast ice formation and ice melting, strong pressure resistance ability, good heat conduction effect, and long service life.

Description

The hollow icicle regenerator of double helix

The utility model relates to a kind of regenerator, particularly relates to the hollow icicle regenerator of a kind of double helix.

As the regenerator of cold-storage device in the central air conditioning equipment, modal have an ice ball type cold storing device, and its housing is a hollow ball, and cool storage medium is housed in it.Some ice ball type cold storing devices are deposited in the cold-storage bucket to constitute the cold-storage device in the central air conditioning equipment, the solid ice hockey that this ice ball type cold storing device provides, heat-transfer effect is relatively poor, in order to strengthen the heat-transfer effect of the centre of sphere, many inventors have done many effort, for example by the centre of sphere metal circular tube are installed; Distortion and stress rupture that the expansive force that the plastics spherical shell is produced when preventing media expansion causes have been made many pits on the ice hockey surface, (see the Chinese patent notification number: 2209308) so that absorb the stress of ice when expanding.However, concerning the ice ball type cold storing device, the expansive force of ice hockey when freezing still can cause the ice hockey distortion, cause extruding or damaged easily, and heat-transfer effect is poor.

No. 77624 patent disclosure of Taiwan utility model the threaded groove of a kind of outer surface, inner surface is the icicle formula regenerator of projection corresponding to groove, this icicle formula regenerator is the hollow cylinder barrel shape housing that plastics are made, housing outer surface is threaded groove, and inner surface is a projection corresponding to groove.The housing inner chamber is the container of cool storage medium, and during use, the housing inner chamber injects cool storage medium, the parallel cold-storage device that in the cold-storage bucket, constitutes in the central air conditioning equipment of piling up, the formed icicle of this regenerator is solid icicle, and radially the heat conduction distance is big for it, causes its heat-transfer effect still undesirable.

The utility model purpose is to overcome the heat-transfer effect difference of above-mentioned ice hockey, the existence of icicle formula regenerator and cause defectives such as extruding or breakage easily, provides the good double helix of a kind of heat-transfer effect hollow icicle regenerator.This regenerator freezes, ice-melt speed is fast, and anti-pressure ability is strong, and heat-transfer effect is good, long service life.

The embodiment that realizes the utility model purpose is as follows:

The hollow icicle regenerator of the double helix that the utility model provides is the improvement of carrying out on above-mentioned icicle formula regenerator basis, i.e. center at the bottom of the shell of icicle formula regenerator barrel shape housing, housing inner chamber central authorities increase an open tubular column core, the post core outer surface is provided with thread groove, inner surface is a projection corresponding to groove, and the outside, shell wall upper surface is higher than inboard 2-3mm.

Using the formed icicle of this regenerator is the hollow icicle that inside and outside surface all is threaded groove, the open circles column type post core of housing lumen centers, its effect has two, the first is strengthened the bearing capacity of housing, be equivalent to add a support, improved the resistance to compression bearing capacity of icicle at the icicle center; It two is the radially heat conduction distances that shorten icicle, freezes, ice-melt speed is fast, improves the heat-transfer character of whole regenerator.The characteristics of the formed double helix icicle of the utility model are: maximum profile was constant when (1) froze, and can not push or breakage, and this is that shell is stressed very little because when freezing volumetric expansion, the bottom of soft groove is moved outward easily and strengthened volume; The maximum profile in back of freezing is constant, so mutual extrusion not is suitable for tight arrangement; (2) the surfaces externally and internally thread groove not only increases heat transfer area, also increases the bittern stroke, can improve the import and export temperature difference; (3) bittern can not produce laminar flow along inner and outer shell thread groove rotational flow, does not therefore have warm effect layer, and arbitrary surface is fluoran stream surface, no dead angle, and flow velocity is even, so real heat exchange area maximum; (4) inner and outer shell is apart from weak point, and thermal resistance is little, and the ice-melt speed of freezing is fast.

Further describe the utility model below in conjunction with drawings and Examples:

Accompanying drawing 1 is a prior art icicle formula regenerator structural representation.

Accompanying drawing 2 is the utility model structural representation.

Accompanying drawing 3 is cold-storage device in the central air conditioning equipment (embodiment) structure vertical view.

Wherein: 2 inner chambers, 3 post cores 4 at the bottom of shell wall 1 shell

Fig. 1 is a prior art icicle formula regenerator shell structure schematic diagram.By 2 forming hollow cylinder barrel shape regenerator at the bottom of shell wall 1 and the shell, shell wall 1 outer surface is threaded groove, and its inner surface is a projection corresponding to groove, injects cool storage mediums in this regenerator inner chamber 3.The icicle that forms when freezing is solid icicle, and heat-transfer effect is undesirable.

Fig. 2 is the utility model structural representation.Feature is 2 centers at the bottom of shell, and inner chamber 3 central authorities are provided with a column type open tubular column core 4, and post core 4 outer surfaces are provided with thread groove, and inner surface is a projection corresponding to groove, at the bottom of the shell 2 be the plane shell at the bottom of, be higher than inboard 2-3mm outside shell wall 1 upper surface.

Cold-storage device structural representation (vertical view) in the central air conditioning equipment that accompanying drawing 3 provides for the utility model embodiment.The housing of cool storage medium is by the thermal conductivity factor height, and the high-density polyethylene plastics of good mechanical property is made.Shell wall and post core outer surface all have spiral groove, and shell wall outer surface thread groove is 4 levoforms, and pitch is 2 times icicle height.Stem stem thread surface groove is 2 levoforms, and pitch also is 2 times icicle height.Cool storage medium in the housing is not full of, and purpose is the expansion space of reserving when freezing.The wide 10mm of shell wall outer surface thread groove, bosom 2mm, the wide 3mm of stem stem outer surface thread groove, bosom 1.5mm.The hollow icicle of formed double helix is compared with solid icicle, and the utility model is equivalent to increase a support on solid icicle center line, and housing above-below direction bearing capacity is greatly strengthened.Volumetric expansion about 8% when the hollow icicle of the formed double helix of medium freezes simultaneously, bottom portion of groove moves outward easily and strengthens volume, thereby the housing pressurized is very little, and the maximum profile in back of freezing is still constant, so mutual extrusion not, be suitable for tight arrangement, compare with circular cylinder, thread groove not only increases surface area, promptly increases heat transfer area, and increase the bittern stroke, thereby improved the import and export temperature difference.Clearly, increased hollow stem stem at the housing center, bittern is flow through by inside and outside housing, has shortened the heat conduction distance of cool storage medium, thereby, to freeze, ice-melt speed is fast, the cold-storage performance is good.

The discharging of the utility model in the cold-storage bucket is also very convenient, for preventing the bittern bias current, between three icicles, can put the little icicle of a φ about 12; Can place the medium-sized icicle of some φ about 30 in the space between icicle and housing.As shown in Figure 3, this tight arrangement mode can make the bittern evenly no by-pass flow of distribution, short circuit automatically, does not have " invalid icicle " the rate height that freezes, cold-storage efficient height.The upper surface housing periphery of regenerator exceeds remainder 2-3mm, and the lower end is the plane, annotates media port and drives a certain position in the upper surface.

Claims (4)

1. hollow icicle regenerator of double helix, its housing is the hollow cylinder barrel shape, barrel shape shell wall outer surface has thread groove, inner surface is a projection corresponding to groove, it is characterized in that: center at the bottom of shell, housing inner chamber central authorities are provided with a column type open tubular column core, and the post core outer surface is provided with thread groove, and inner surface is a projection corresponding to groove.

2. by the hollow icicle regenerator of the described double helix of claim 1, it is characterized in that the outside, shell wall upper surface is higher than inboard 2-3mm.

3. by the hollow icicle regenerator of the described double helix of claim 1, it is characterized in that at the bottom of the shell be flat.

4. by the hollow icicle regenerator of the described double helix of claim 1, it is characterized in that its material is the thermal conductivity factor height, the high density polyethylene (HDPE) of good mechanical property.

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