CN104296412A - Pulse cooling tube applying liquid working medium - Google Patents
Pulse cooling tube applying liquid working medium Download PDFInfo
- Publication number
- CN104296412A CN104296412A CN201410595181.7A CN201410595181A CN104296412A CN 104296412 A CN104296412 A CN 104296412A CN 201410595181 A CN201410595181 A CN 201410595181A CN 104296412 A CN104296412 A CN 104296412A
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- China
- Prior art keywords
- heat
- vascular
- refrigeration
- pulse tube
- liquid working
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
- F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1414—Pulse-tube cycles characterised by pulse tube details
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a pulse cooling tube applying a liquid working medium. The pulse cooling tube comprises a pulse tube. The top end of the pulse tube serves as the heat release end, and the bottom end of the pulse tube serves as the refrigeration end. The heat release end of the pulse tube is connected with a pressure wave generator through an air inlet pipe. The heat release end of the pulse tube is provided with a heat exchanger for discharging heat of the pulse tube into the atmosphere. The refrigeration end of the pulse tube is provided with a cavity for containing liquid refrigerants. The refrigeration end of the pulse tube is located in a refrigeration area. The pressure wave generator produces a pressure field with standing waves of one-quarter wavelength in the pulse tube, the heat release end is located in the wave loop, and the refrigeration end is located in the wave node. According to the adopted structure, it becomes reality that the pulse cooling tube is manufactured through the liquid refrigerants. The specific heat and phase change latent heat of the liquid working medium are larger compared with those of a gas working medium, and therefore the refrigeration performance is greatly improved compared with an existing pulse tube refrigerator. A porous medium material is arranged between the heat release end and the refrigeration end to serve as a heat regenerator, and therefore the refrigeration efficiency is improved.
Description
Technical field
The present invention relates to refrigeration technology field, especially a kind of vascular refrigerator.
Background technology
Conventional heat pipe utilizes the heat transfer theory of both sides phase transformation to realize heat transfer, takes heat to condensation end from fire end, is a kind of effective all temperature techniques.It generally selects liquid refrigerant, realizes heat exchange by the evaporation endothermic of liquid and the phase transition process of condensation heat release.Because the specific heat of liquid working substance and latent heat of phase change are comparatively large, therefore heat pipe has high heat transfer efficiency.Vascular refrigerator is then utilize high-low pressure gas to obtain refrigeration to the inflation/deflation process of vascular cavity.It generally selects gas as working medium, is regulated the phase place of vascular cold junction mass flow and pressure wave by the reciprocating motion of endovascular gas piston.According to phase potential theory, when vascular cold junction pressure and the same phase time of speed, refrigerating capacity is maximum; When both orthogonal (phase differences 90 degree), refrigerating capacity equals zero.Vascular refrigerator mainly through the heat exchange of gas and tube wall by heat from cold junction pump to hot junction, produce cold thus, but tube wall pump hot merit can be limited, limits the raising of its refrigeration performance.
Summary of the invention
The object of the present invention is to provide a kind of novel take liquid refrigerant as the cold pipe of pulsation of working medium.
For achieving the above object, the cold pipe of pulsation of use liquid working substance of the present invention comprises vascular, and vascular top is release end of heat, and vascular bottom is refrigeration end; The release end of heat of vascular is connected with pressure wave generator by air inlet pipe, and vascular release end of heat is provided with the heat exchanger for vascular heat being discharged to atmospheric environment; Pulse tube refrigeration end is provided with the cavity for holding liquid refrigerant, and pulse tube refrigeration end is positioned at refrigerated area; Pressure wave generator produces quarter-wave standing pressure field in vascular, and release end of heat is positioned at antinode, and refrigeration end is positioned at node.
Between refrigeration end and release end of heat, porous media material is filled with in described vascular.
Described heat exchanger is water-cooled finned heat exchanger or air cooling fin formula heat exchanger.
Described pressure wave generator adopts any one in following three kinds of forms: reciprocating piston apparatus; Pressure-sensitive diaphragm; Loudspeaker.
Described porous media material is foam copper, foamed aluminium or porous ceramics.
The material of described vascular is any one in copper material, aluminium or stainless steel.
Advantage of the present invention mainly contains:
1. structure of the present invention makes to adopt the cold pipe of liquid refrigerant making pulsation to become a reality.Due to the specific heat of liquid working substance and latent heat of phase change, to compare gas working medium all comparatively large, and therefore the present invention substantially increases refrigeration performance than vascular refrigerator in the past.
Porous media material is set between release end of heat and refrigeration end as regenerator, improves refrigerating efficiency.
2. the present invention compares conventional vascular refrigeration machine, simple and compact for structure, has wide range of applications.Low-temp. portion (i.e. refrigeration end) movement-less part, reliable.
3. adopt liquid refrigerant as working medium, latent heat of phase change is comparatively large, substantially increases refrigerating efficiency.
4. the material of vascular can use copper material, aluminium or the stainless steel etc. that heat transfer efficiency is higher, draws materials extensively, is easy to processing.
5. the cold pipe release end of heat of this pulsation mainly realizes condensation heat release according to pressure change, and heat exchanger heat exchange efficiency requires lower, and therefore the heat exchanger pattern that can select of release end of heat is extensive.The porous media material of filling in vascular can be porous ceramics, and foam copper, foamed aluminium etc. are less demanding to porosity equally accurate, cheapness and easily processing.
6. the liquid working substance that refrigeration end fills can be conventional refrigerant (as R410a or R22), and especially boiling point is stressed the cold-producing medium that impact is comparatively large and latent heat of phase change is larger, nontoxic and convenience of drawing materials.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Number in the figure 1 is pressure wave generator; Label is air inlet pipe; Label 3 is release end of heat; Label 4 is vascular; Label 5 is refrigeration end; Label 6 is refrigerated area, and label 7 is heat exchanger, and label 8 is porous media material.
Detailed description of the invention
As shown in Figure 1, the cold pipe of pulsation of use liquid working substance of the present invention comprises vascular 4, and vascular 4 top is release end of heat 3, and vascular 4 bottom is refrigeration end 5; The release end of heat 3 of vascular 4 is connected with pressure wave generator 1 by air inlet pipe 2, is provided with the heat exchanger 7 for being sent by the heat in vascular 4 in the cavity of the release end of heat 3 of vascular 4; The refrigeration end 5 of vascular 4 is provided with the cavity for holding liquid refrigerant, and the refrigeration end 5 of vascular 4 is positioned at refrigerated area 6; Pressure wave generator 1 produces quarter-wave standing pressure field (namely the length of vascular 4 is 1/4th of wavelength) in vascular 4, and release end of heat 3 is positioned at antinode, and refrigeration end 5 is positioned at node.
Described refrigerated area 6 is the occasion that refrigerator or other deepfreeze refrigerating chambers etc. need low temperature.In use refrigeration end 5 is positioned over refrigerated area 6 place.
Between refrigeration end 5 and release end of heat 3, porous media material 8 is filled with in described vascular 4.
Described heat exchanger 7 is water-cooled finned heat exchanger or air cooling fin formula heat exchanger.
Described pressure wave generator 1 is prior art, adopts any one in following three kinds of forms: reciprocating piston apparatus; Pressure-sensitive diaphragm; Loudspeaker.Pressure wave generator 1 for producing quarter-wave standing pressure field in vascular 4.The various forms of concrete structure of pressure wave generator 1 is prior art, no longer describes in detail.
Described porous media material 8 is foam copper, foamed aluminium or porous ceramics, also can adopt other porous materials.
The material of described vascular 4 is any one in copper material, aluminium or stainless steel.
Wherein, the cold-producing medium that refrigeration end 5 fills can select the conventional refrigerant such as R410a or R22, and especially boiling point is stressed affects comparatively large and that latent heat of phase change is larger cold-producing medium, and the target temperature according to refrigeration is suitably chosen.
In the present invention, be filled with liquid refrigerant in refrigeration end 5 as working medium, during work, refrigeration end 5 needed the occasion of refrigeration as refrigerated area 6() the interior refrigeration that can realize this region.
Mentality of designing of the present invention is:
The cold pipe of pulsation of the use liquid working substance in the present invention combines the advantage of heat pipe and vascular refrigerator, adopts liquid refrigerant as working medium, utilizes the liquid characteristic that boiling point is different at various pressures to carry out freezing by change of state at different pressure phase places.In vascular 4, formed the stationary field of 1/4th by pressure wave generator 1, make the refrigeration end 5 in vascular 4 be in node, release end of heat 3 is positioned at antinode.Boiling point is lower at low pressures for the liquid working substance of filling in refrigeration end 5, and evaporation moves up to release end of heat 3, and because of pressure increase, the elevation of boiling point, cools heat release at release end of heat 3, and cooling liquid flows back to refrigeration end 5 and continues evaporation endothermic.Liquid working substance constantly carries out heat absorption heat release at vascular 4 two ends and realizes refrigeration effect, is wherein filled with porous media between refrigeration end 5 and release end of heat 3, plays the effect of regenerator, improves refrigerating efficiency.This pulsation cold junction low-temperature end (i.e. refrigeration end 5) movement-less part, and adopt liquid working substance to improve refrigerating efficiency, can apply to refrigerator, household freezer etc. need in the equipment of refrigeration.
Operationally, pressure wave generator 1 forms quarter-wave stationary field in vascular 4 in the present invention.When pressure wave generator 1 adopts piston apparatus, be rely on the reciprocating motion of piston to form stationary field.In vascular 4, form quarter-wave stationary field, release end of heat 3 can be made to be convenient to antinode, and refrigeration end 5 is positioned at node.Liquid refrigerant has been filled with in advance as working medium at refrigeration end 5 place.Refrigeration end 5 is in node place, and pressure is lower, and thus the boiling point of this place's working medium is lower.Release end of heat 3 is in antinode place, and pressure is higher, and thus the boiling point of this place's working medium is higher.Like this, liquid working substance can at refrigeration end 5 evaporation endothermic, and steam rises.The steam of working medium, when by porous media material 8, contacts with porous media material 8, realizes abundant heat exchange.The steam of final working medium at release end of heat 3 because pressure is comparatively large, boiling point temperature that is higher, steam itself carries out condensation heat release lower than boiling temperature.Steam condensing liberated heat by release end of heat 3 place heat exchanger 7 take away, steam condensing is automatically flow back into refrigeration end 5 under gravity after liquid working substance.In the process of the continuous evaporation endothermic of liquid working substance and condensation heat release just, the heat in refrigerated area 6 has been pumped into hot junction, achieves the effect of refrigeration.
Above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can modify to the present invention or equivalent replacement, and not departing from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. use the cold pipe of pulsation of liquid working substance, comprise vascular, it is characterized in that: vascular top is release end of heat, vascular bottom is refrigeration end; The release end of heat of vascular is connected with pressure wave generator by air inlet pipe, and vascular release end of heat is provided with the heat exchanger for vascular heat being discharged to atmospheric environment; Pulse tube refrigeration end is provided with the cavity for holding liquid refrigerant, and pulse tube refrigeration end is positioned at refrigerated area; Pressure wave generator produces quarter-wave standing pressure field in vascular, and release end of heat is positioned at antinode, and refrigeration end is positioned at node.
2. the cold pipe of pulsation of use liquid working substance according to claim 1, is characterized in that: between refrigeration end and release end of heat, be filled with porous media material in described vascular.
3. the cold pipe of pulsation of use liquid working substance according to claim 1, is characterized in that: described heat exchanger is water-cooled finned heat exchanger or air cooling fin formula heat exchanger.
4. the cold pipe of pulsation of use liquid working substance according to any one of claim 1 to 3, is characterized in that: described pressure wave generator adopts any one in following three kinds of forms: reciprocating piston apparatus; Pressure-sensitive diaphragm; Loudspeaker.
5. the cold pipe of pulsation of use liquid working substance according to claim 2, is characterized in that: described porous media material is foam copper, foamed aluminium or porous ceramics.
6. the cold pipe of pulsation of use liquid working substance according to any one of claim 1 to 3, is characterized in that: the material of described vascular is any one in copper material, aluminium or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595181.7A CN104296412B (en) | 2014-10-30 | 2014-10-30 | Pulse cooling tube applying liquid working medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595181.7A CN104296412B (en) | 2014-10-30 | 2014-10-30 | Pulse cooling tube applying liquid working medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104296412A true CN104296412A (en) | 2015-01-21 |
| CN104296412B CN104296412B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410595181.7A Active CN104296412B (en) | 2014-10-30 | 2014-10-30 | Pulse cooling tube applying liquid working medium |
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| Country | Link |
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| CN (1) | CN104296412B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019969A (en) * | 2017-12-15 | 2018-05-11 | 陕西仙童科技有限公司 | A kind of cold end device for refrigeration machine |
| WO2020252689A1 (en) * | 2019-06-19 | 2020-12-24 | 中国科学院理化技术研究所 | Combined cycle room temperature refrigeration/heat pump double-effect system |
Citations (12)
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| CN2062805U (en) * | 1989-09-27 | 1990-09-26 | 中国科学院低温技术实验中心 | Coaxial pulse tube refrigerating machine with small hole and air vesicle |
| CN1067499A (en) * | 1992-01-04 | 1992-12-30 | 中国科学院低温技术实验中心 | Refrigerator with multi-channel shunt pulse pipes |
| CN1107226A (en) * | 1994-11-10 | 1995-08-23 | 中国科学院低温技术实验中心 | Low temperature valve switching over type pulse pipe refrigerating liquidation flow and device |
| JPH07260268A (en) * | 1994-03-18 | 1995-10-13 | Aisin Seiki Co Ltd | Pulse tube refrigerator |
| JPH09243189A (en) * | 1996-03-01 | 1997-09-16 | Ebara Corp | Pulse-tube refrigerator |
| WO1998000677A1 (en) * | 1996-07-01 | 1998-01-08 | The Regents Of The University Of California | Orifice pulse tube with variable phase shift |
| CN1467460A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Cold quantity conveying device of heat pipe type pulse tube refrigerator |
| CN1657842A (en) * | 2005-02-28 | 2005-08-24 | 西安交通大学 | Multi-acoustic refrigerating machine |
| CN1684252A (en) * | 2004-04-12 | 2005-10-19 | 中南大学 | Circulation flowing pulsating heat pipe for cooling electronic device |
| CN1710354A (en) * | 2005-06-30 | 2005-12-21 | 上海交通大学 | L-shape vessel refrigerator |
| CN2811865Y (en) * | 2005-05-17 | 2006-08-30 | 中国科学院理化技术研究所 | Air-reservoir-free high-frequency pulse tube refrigerator |
| CN204141882U (en) * | 2014-10-30 | 2015-02-04 | 郑州大学 | Use the cold pipe of pulsation of liquid working substance |
-
2014
- 2014-10-30 CN CN201410595181.7A patent/CN104296412B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062805U (en) * | 1989-09-27 | 1990-09-26 | 中国科学院低温技术实验中心 | Coaxial pulse tube refrigerating machine with small hole and air vesicle |
| CN1067499A (en) * | 1992-01-04 | 1992-12-30 | 中国科学院低温技术实验中心 | Refrigerator with multi-channel shunt pulse pipes |
| US5295355A (en) * | 1992-01-04 | 1994-03-22 | Cryogenic Laboratory Of Chinese Academy Of Sciences | Multi-bypass pulse tube refrigerator |
| JPH07260268A (en) * | 1994-03-18 | 1995-10-13 | Aisin Seiki Co Ltd | Pulse tube refrigerator |
| CN1107226A (en) * | 1994-11-10 | 1995-08-23 | 中国科学院低温技术实验中心 | Low temperature valve switching over type pulse pipe refrigerating liquidation flow and device |
| JPH09243189A (en) * | 1996-03-01 | 1997-09-16 | Ebara Corp | Pulse-tube refrigerator |
| WO1998000677A1 (en) * | 1996-07-01 | 1998-01-08 | The Regents Of The University Of California | Orifice pulse tube with variable phase shift |
| CN1467460A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Cold quantity conveying device of heat pipe type pulse tube refrigerator |
| CN1684252A (en) * | 2004-04-12 | 2005-10-19 | 中南大学 | Circulation flowing pulsating heat pipe for cooling electronic device |
| CN1657842A (en) * | 2005-02-28 | 2005-08-24 | 西安交通大学 | Multi-acoustic refrigerating machine |
| CN2811865Y (en) * | 2005-05-17 | 2006-08-30 | 中国科学院理化技术研究所 | Air-reservoir-free high-frequency pulse tube refrigerator |
| CN1710354A (en) * | 2005-06-30 | 2005-12-21 | 上海交通大学 | L-shape vessel refrigerator |
| CN204141882U (en) * | 2014-10-30 | 2015-02-04 | 郑州大学 | Use the cold pipe of pulsation of liquid working substance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019969A (en) * | 2017-12-15 | 2018-05-11 | 陕西仙童科技有限公司 | A kind of cold end device for refrigeration machine |
| CN108019969B (en) * | 2017-12-15 | 2024-04-09 | 陕西仙童科技有限公司 | Cold end device for refrigerator |
| WO2020252689A1 (en) * | 2019-06-19 | 2020-12-24 | 中国科学院理化技术研究所 | Combined cycle room temperature refrigeration/heat pump double-effect system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104296412B (en) | 2017-02-15 |
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