CN205013148U - Heater for stirling - Google Patents
Heater for stirling Download PDFInfo
- Publication number
- CN205013148U CN205013148U CN201520596733.6U CN201520596733U CN205013148U CN 205013148 U CN205013148 U CN 205013148U CN 201520596733 U CN201520596733 U CN 201520596733U CN 205013148 U CN205013148 U CN 205013148U
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- CN
- China
- Prior art keywords
- heater
- cylindrical shell
- barrel
- fin
- inner barrel
- 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.)
- Expired - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a heater for stirling, including heater barrel (1) to and arrange in side -finned (2) in heater barrel (1) the outside and inner fin (4) of inboard, interior barrel (3) that the material that coefficient of heat conductivity is higher that still includes one operating ratio barrel (1) was made, interior barrel (3) nested in heater barrel (1), interior barrel (3) link into an integrated entity with barrel (1) including, and inner fin (4) have been arranged to barrel (3) inboard, its characteristics that have compact structure, simple process, heat exchange efficiency height, low in manufacturing cost, the stirling of miniwatt uses in being applicable to.
Description
Technical field
The utility model is about heater, especially about Stirling engine heater.
Background technique
Stirling engine is the reciprocating engine of a kind of outside heat supply (or burning), and it is using gas as working medium, carries out work by the mode of enclosed extraction cycle.Stirling engine is primarily of compositions such as outside heat supply (burning) system, work cycle system (heat energy-mechanical energy conversion system), transmission system (mechanical energy output system), auxiliary system and supervisory systems.Wherein, heater is one of vitals of Stirling engine, and its effect mainly makes inner side working medium absorb outside heat.
In general, high-power Stirling engine uses heated Tube heater, the Chinese patent being CN200510030072.1 as the patent No. discloses a kind of tubular heater, small Stirling engine considers the factors such as compact structure, uses fin heater more, namely integral type heater.The patent No. is that the Chinese patent of ZL200620048752.6 discloses a kind of rib-type heater, be applied to small-power gas-type Stirling engine, the principal mode of this heater structure is that the external side of cartridge heater and disposed inboard have in-line arrangement fin, the in-line arrangement fin and the heater cylindrical shell that are arranged in heater cylindrical shell medial and lateral are integral type, adopt casting or mach mode manufacture to form.This heater structure has compact structure, high reliability, be applicable to small Stirling engine to use, but also exist following not enough: due to Stirling engine characteristic caused by, heater body working medium side heat-exchange performance comparatively outside flue gas heat exchange performance is a lot of by force, and inner side fin and outside fin use same material integrally to add man-hour, its fin efficiency is on the low side, make heat effectively cannot pass to working medium, have impact on the performance of Stirling engine, reduce engine efficiency.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of Stirling engine heater, and solve the unmatched problem of cartridge heater inside and outside fin heat transfer effect, it has compact structure, technique is simple, heat exchange efficiency is high, the feature of low cost of manufacture.
The purpose of this utility model is solved by following technological scheme:
A kind of Stirling engine heater, comprise heater cylindrical shell, and be arranged in the outer fin of the external side of cartridge heater and the internal fin of inner side, be characterized in, also comprise the inner barrel that a material higher than the thermal conductivity of cylindrical shell is made, described inner barrel is nested in heater cylindrical shell, and inner barrel and cylindrical shell link into an integrated entity, and has internal fin in inner barrel disposed inboard.
Preferably, above-mentioned Stirling engine heater, described heater inner barrel and cylindrical shell adopt the mode of welding or being threaded to link into an integrated entity.
Preferably, above-mentioned Stirling engine heater, described heater cylindrical shell adopts stainless steel material or high-temperature alloy steel materials processing to form, and inner barrel adopts the higher pure copper material of thermal conductivity to process.
Preferably, above-mentioned Stirling engine heater, described outer fin and internal fin are in-line arrangement or sped structure.
In a word, the beneficial effects of the utility model are:
Heater of the present utility model, because the thermal conductivity of inner barrel is far above cylindrical shell, although internal fin area is less than outer fin, but the heat conduction amount of inside and outside fin is suitable, greatly improve the heat transfer efficiency of inner fins, make the more effective absorption outside heat of working medium, be conducive to the performance improving complete machine, improve engine efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structure sectional view of the present utility model;
Wherein:
1, cylindrical shell; 2, outer fin; 3, inner barrel; 4, internal fin.
Embodiment
Fig. 1 is an embodiment of the present utility model.
This heater, comprises cylindrical shell 1, inner barrel 3, is furnished with the outer fin 2 of in-line arrangement outside cylindrical shell 1, and inner barrel 3 is nested in cylindrical shell 1, and general welding or the thread connecting mode of adopting links into an integrated entity.Have internal fin 4 in inner barrel 3 disposed inboard, internal fin 4 is in-line arrangement, and internal fin 4 generally adopts machining mode to process, for preventing machining deformation, add man-hour, normal adopt first inner barrel 3 and cylindrical shell 1 to be adopted to weld or thread connecting mode connects, then carry out mach mode acquisition.For making heat conduction coupling inside and outside cylindrical shell, the material that inner barrel 3 adopts thermal conductivity higher, as cylindrical shell 1 adopts stainless steel or high-temperature alloy Steel material, inner barrel 3 adopts pure copper material.Fine copper material is as internal fin 4, there is very high thermal conductivity, 360W/ (m.K) is about, far above the high-temperature alloy steel (being about 24W/ (m.K) when 500 DEG C) that heater cylindrical shell 1 uses when operating temperature is 500 DEG C.Due to as internal fin 4, do not need the pressure bearing internal working medium, also do not need the high temperature bearing outside flue gas, internal working medium is generally the inert gases such as pure helium simultaneously, can not cause the problems such as oxidation to copper.Therefore the inner fine copper fin that uses can ensure the reliability used.
Above-mentioned cylindrical shell 1 adopts casting or forging, then machining mode processes, and wherein said outer fin 2 also often adopts chip processing mode to process, and can certainly adopt the once-through of cast inblock mode.
Heater of the present utility model is applicable to the multiple working medium such as hydrogen, helium, can be applicable to various forms small Stirling engine, as four cylinder double-action Stirling engines, single cylinder Stirling engine with free piston etc., variety of energy sources is used to comprise gas combustion, solar energy type, heat radiation type etc.
The utility model does not limit to above form, is applicable to other variation yet, as the material of fin, structure, quantity or arrangement, as long as but adopt the knockdown mode of bi-material, or equivalently change or modify, all fall into the scope of this patent protection.
Claims (5)
1. a Stirling engine heater, comprise heater cylindrical shell (1), and be arranged in the outer fin (2) in heater cylindrical shell (1) outside and the internal fin (4) of inner side, it is characterized in that: also comprise an inner barrel (3) utilizing the material higher than the thermal conductivity of cylindrical shell (1) to make, described inner barrel (3) is nested in heater cylindrical shell (1), inner barrel (3) and cylindrical shell (1) link into an integrated entity, and have internal fin (4) in inner barrel (3) disposed inboard.
2. Stirling engine heater according to claim 1, is characterized in that: described heater inner barrel (3) and cylindrical shell (1) adopt the mode of welding or being threaded to link into an integrated entity.
3. Stirling engine heater according to claim 1 and 2, it is characterized in that: described heater cylindrical shell (1) adopts stainless steel material or high-temperature alloy steel materials processing to form, inner barrel (3) adopts the higher pure copper material of thermal conductivity to process.
4. Stirling engine heater according to claim 1 and 2, is characterized in that: described outer fin (2) and internal fin (4) are in-line arrangement or sped structure.
5. Stirling engine heater according to claim 3, is characterized in that: described outer fin (2) and internal fin (4) are in-line arrangement or sped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520596733.6U CN205013148U (en) | 2015-08-10 | 2015-08-10 | Heater for stirling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520596733.6U CN205013148U (en) | 2015-08-10 | 2015-08-10 | Heater for stirling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013148U true CN205013148U (en) | 2016-02-03 |
Family
ID=55211757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520596733.6U Expired - Fee Related CN205013148U (en) | 2015-08-10 | 2015-08-10 | Heater for stirling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778028C1 (en) * | 2022-02-09 | 2022-08-12 | Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" (ФГУП "РФЯЦ-ВНИИЭФ") | Stirling engine heating head |
-
2015
- 2015-08-10 CN CN201520596733.6U patent/CN205013148U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2778028C1 (en) * | 2022-02-09 | 2022-08-12 | Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" (ФГУП "РФЯЦ-ВНИИЭФ") | Stirling engine heating head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20210810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |