JPS60228896A - Multivalent heater - Google Patents

Multivalent heater

Info

Publication number
JPS60228896A
JPS60228896A JP59274242A JP27424284A JPS60228896A JP S60228896 A JPS60228896 A JP S60228896A JP 59274242 A JP59274242 A JP 59274242A JP 27424284 A JP27424284 A JP 27424284A JP S60228896 A JPS60228896 A JP S60228896A
Authority
JP
Japan
Prior art keywords
wall
heater according
fins
vent
hot
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.)
Granted
Application number
JP59274242A
Other languages
Japanese (ja)
Other versions
JPH0689934B2 (en
Inventor
ウルリヒ・グリガート
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of JPS60228896A publication Critical patent/JPS60228896A/en
Publication of JPH0689934B2 publication Critical patent/JPH0689934B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/14Arrangements for modifying heat-transfer, e.g. increasing, decreasing by endowing the walls of conduits with zones of different degrees of conduction of heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)
  • Building Environments (AREA)

Abstract

1. Radiator for space heating with convectors supplied from different energy sources. The upper convector (2) is operated by means of a heating medium of a higher temperature and the lower convector (1) is operated by means of a heating medium of a lower temperature. The convectors are equipped with heatconducting lamellae (3, 4) - arranged one after the other in flow direction - that divide an air duct into a number of continuously ascending open flues (14). The radiator is characterized by the fact that the lamellae (4) of the higher temperature convector are connected with the lamellae (3) of the lower temperature convector by means of heat insulating bridges (11) made of a material of minor heat conductivity, such that the open flues (14) are kept free.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、異なるエネルギー源から異なる温度の流体が
供給される若干の管を有し、肢管にるマルチバレントヒ
ータに関スル。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to multivalent heaters in limbs having several tubes supplied with fluids of different temperatures from different energy sources.

従来の技術 従来公知のマルチバレントヒータの総合性能は不十分で
ある。
BACKGROUND OF THE INVENTION The overall performance of multivalent heaters known in the prior art is unsatisfactory.

本発明は、たとえば太陽エネルギーが常用のヒータの効
率を支持するために利用されるマルチバレントヒータの
総合性能は、高温の系から低温の系への熱のフィードバ
ックが回避されることに大きく依存し、常用のマルチ・
ζレントヒータにおける該フィード・Zツクは加熱され
る空気用通路内での空気の乱流によるかまたは高温の糸
から低温の系への熱伝導によって惹起さレルいう認識か
ら出発する。
The present invention provides that the overall performance of multivalent heaters, for example where solar energy is utilized to support the efficiency of conventional heaters, is highly dependent on the avoidance of heat feedback from the hotter system to the colder system. , commonly used multi-
The starting point is the recognition that the feed Z in the ζ-rent heater is caused by turbulence of the air in the heated air duct or by heat conduction from the hot thread to the cold system.

本発明によれば、上述した熱のフィードバックを克服す
るために、高温の部分と低温の部分との間に熱絶縁ゾー
ンを配置し、高温のフィンと低温のフィンを、加熱され
る空気が乱流なしに高度に完全な層流状態で空気用通路
全体を通過するように配置する。こうして、本発明のマ
ルチ・ζレントヒータは改良された総合性能を特徴とす
る。
According to the invention, in order to overcome the above-mentioned thermal feedback, a thermal insulation zone is arranged between the hot and cold parts, so that the hot and cold fins are separated from each other by the turbulence of the heated air. It is arranged so that it passes through the entire air passageway in highly perfect laminar flow conditions without any flow. Thus, the multi-ζ-lent heater of the present invention is characterized by improved overall performance.

良好に理解するために、若干の実施例を添付図面につき
詳述する。
For a better understanding, some embodiments are described in detail with reference to the accompanying drawings.

実施例 その実施例が図面に示されているマルチ・ぐレントヒー
メは、室を加熱するために使用され、別個のエネルギー
源から異なる温度の流体が供給さ粁る2つ以上の加熱系
、即ちたとえば太陽エネルギー用捕集器のような補助エ
ネルギー源からの熱湯M1 の供給される第1の下部ヒ
ータにおよび常用のメイラからの熱湯M2 の供給され
る第2の上部ヒータタを備えている。双方のエネルギー
源は周知構造のものであってもよく、図面に示さtてい
ない。
EXAMPLE A multi-heat heating system, an example of which is shown in the drawings, is used to heat a chamber and comprises two or more heating systems supplied with fluids of different temperatures from separate energy sources, i.e. e.g. A first lower heater is provided with hot water M1 from an auxiliary energy source such as a solar energy collector and a second upper heater is provided with hot water M2 from a conventional mailer. Both energy sources may be of known construction and are not shown in the drawings.

ヒータyおよびVは、管1および2からな)4 .1群の長方形の薄板状フィン3および4が植設されて
いる。
Heaters y and V are from tubes 1 and 2)4. A group of rectangular thin plate-like fins 3 and 4 are implanted.

を形成し、糸aおよびCは中間部すによって分離さ扛て
いる。この中間部は空所(第5図)であってもよいし、
熱絶縁ブリッJIIKよって通路 橋絡され、こうして中断されてない<λ〜\を形成して
通気孔の底部にある空気入口から上方へ頂部にある出口
までの空気の層流を確保することもできる。熱絶縁材料
としてはプラスチックを使用することができる。
The threads a and C are separated by an intermediate part. This middle part may be a blank space (Fig. 5), or
The passage can also be bridged by a thermal insulation bridge JIIK, thus forming an uninterrupted <λ~\ to ensure a laminar flow of air from the air inlet at the bottom of the vent upwards to the outlet at the top. . Plastic can be used as thermally insulating material.

第1図、第2図および第3図は、熱を伝導し、外側へ加
熱すべき室中へ放射する金属製の通気孔壁5を有する実
施例を示す。
1, 2 and 3 show an embodiment with a metal vent wall 5 which conducts heat and radiates it outwards into the room to be heated.

すべての実施例は、加熱糸aとbとの間に熱絶縁ゾーン
を備えているので、高い温度の加熱系から低い温度の加
熱系へのエネルギーのフィードバックが有効に排除され
ている。
All embodiments include a thermally insulating zone between the heating threads a and b, so that feedback of energy from the higher temperature heating system to the lower temperature heating system is effectively eliminated.

第1図および第2図においては、フィード・ぐツクは底
部から頂部まで通気孔の金属壁5の熱絶縁内張り6によ
って排除されている。
In FIGS. 1 and 2, the feed hole is excluded from bottom to top by a thermally insulating lining 6 of the metal wall 5 of the vent.

第3図においては、この内張り6は中間部すで中断され
ている。
In FIG. 3, this lining 6 is interrupted already in the middle.

第4図においては、内張シの代りに熱絶縁ストリップ7
が設けられている。
In FIG. 4, the thermal insulation strip 7 is replaced by a lining.
is provided.

第9図は、壁の連続する内張りが、たんに中間部す内の
中断個所を残してフィン3および牛の熱絶縁ネックlO
Kよって形成されている実雄側を示す。
FIG. 9 shows that the continuous lining of the wall is connected to the fins 3 and the thermally insulating neck lO of the cow, leaving only an interruption in the middle part.
The actual male side formed by K is shown.

第5図および第10図においては、加熱ゾーンaおよび
Cは空気充満間@8によって分離されている。
In FIGS. 5 and 10, heating zones a and C are separated by an air gap @8.

第3図の実施例においては、下部加熱糸aによって加熱
された空気は、中間部す内の金属壁を擦過する。
In the embodiment of FIG. 3, the air heated by the lower heating thread a rubs against the metal wall in the middle section.

第5図の実施例においては、上部加熱系のフィン牛は金
属壁5に直接に連結され、上部加熱系から下部加熱系へ
の熱エネルギーのフィードバックは、金属壁5の上方部
分と下方部分との間の熱絶縁挿入体9の配置によって排
除されている。
In the embodiment of FIG. 5, the fins of the upper heating system are directly connected to the metal wall 5, and the feedback of thermal energy from the upper heating system to the lower heating system is between the upper and lower parts of the metal wall 5. is eliminated by the arrangement of the thermally insulating insert 9 between them.

上部加熱系Cのゾーン内の熱輻射は、金属フィン4を直
接に上部金属壁5に連結することによって達成すること
ができ、下部加熱系aのフィン3は、第5図に示したよ
うに下部金属壁5に対して熱絶縁されている。
Heat radiation in the zone of the upper heating system C can be achieved by connecting the metal fins 4 directly to the upper metal wall 5, and the fins 3 of the lower heating system a as shown in FIG. It is thermally insulated from the lower metal wall 5.

第8図においては、壁5に対する双方の梁の熱絶縁は、
間隙13の配置によって達成される。
In FIG. 8, the thermal insulation of both beams with respect to the wall 5 is:
This is achieved by the arrangement of the gap 13.

第10図において、壁5の下方部分5 は金属材料から
なり、フィン凸に連結されているが、上方の壁部分5“
および中間部は熱絶縁材料からなる。
In FIG. 10, the lower part 5 of the wall 5 is made of metal material and is connected to the fin convex, while the upper wall part 5''
and the middle part consists of a thermally insulating material.

第5図および第6図の実施例においては下部加熱系から
の熱エネルギーは一般に上部加熱系Cの放熱を増加する
のに利用される。
In the embodiment of FIGS. 5 and 6, thermal energy from the lower heating system is generally utilized to increase the heat dissipation of the upper heating system C.

通気孔内ならびにヒータ上方の空気の流れは、エアシャ
ッタ15の助けをかシて調節することができる。加熱さ
れた空気の出力はたとえばヒータ上方の窓に向けるか、
またはシャック150車軸が反対側へ移動できる場合に
は、窓から転向して室の中央に向けることができる。
The air flow within the vents and above the heater can be regulated with the aid of an air shutter 15. The output of the heated air can be directed to a window above the heater, for example, or
Or, if the shack 150 axle can be moved to the opposite side, it can be turned out of the window and toward the center of the room.

【図面の簡単な説明】[Brief explanation of the drawing]

添付図面は、本発明の実施例を示すもので、第1図は2
段のマルチバレントヒータの第2図のI−I線による垂
直断面図であシ、第2図は第1図の■−■線による断面
図であシ、第3図は他の実施例のマルチバレントヒータ
の2つの加熱系の間の中間部を示す部分的垂直断面図で
あり、第4図はフィンと通気孔壁との間の連結部を示す
部分的水平断面図であシ、第5図は他の構造の中間ゾー
ンを示す略図であシ、第6図は隣接加熱系のフィンの間
の熱絶縁ブリッジの構造を示す略図であり、第7図は第
6図の■−■線による断面図であり、第8図は2つの加
熱系のフィンの間に空隙を有する中断部の1実施例を示
す略図であシ、第9図は隣接する熱絶縁ネックを有する
フィンを示す略図であシ、第10図は熱絶縁材料からな
る上部通気孔壁を有する実施例を示す略図である。 4・・・下部ヒータ、に・・・土部ヒータ、1,2 ・
ヒータの管、1・・下部ヒータの管、2・・−土部ヒー
タの管、3・・・下部ヒータのフィン、4・・上部ヒー
タのフィン、5’+ 5’/・・・通気孔の下部壁およ
び下部壁、6・・熱絶縁内張シ、7・・熱絶縁ストリッ
ジ、8・・・フィン3と牛との間の間隙、9山熱絶縁挿
入体、10・・・熱絶縁ネック、ll・・・熱絶縁ブリ
ッジ、12・・・熱絶縁板、13・・・間隙、■4・・
・通路、15・・・エアシャッタ、a・・・下部加熱ゾ
ーン、b・中間部、C・・・下部加熱ゾーン手続補正書
(方式) 昭和60年5月λり日 特許庁長官殿 1・事件の表示 昭和59年特許願第274242号2
、発明の名称 マルチバレントヒータ 3、補正をする者 事件との関係 特許出願人 エル 氏 名 ウルリヒ・グリが一ト 4、代理人 6、補正の対象 (1)図面
The accompanying drawings show embodiments of the present invention, and FIG.
FIG. 2 is a vertical cross-sectional view taken along line I--I in FIG. 1, and FIG. 3 is a cross-sectional view taken along line ■-■ in FIG. 4 is a partial vertical sectional view showing the intermediate section between the two heating systems of the multivalent heater; FIG. 4 is a partial horizontal sectional view showing the connection between the fins and the vent wall; FIG. FIG. 5 is a schematic diagram showing the intermediate zone of another structure, FIG. 6 is a schematic diagram showing the structure of a thermal insulation bridge between the fins of adjacent heating systems, and FIG. Figure 8 is a schematic diagram showing one embodiment of an interruption with an air gap between two heating system fins; Figure 9 shows a fin with an adjacent thermally insulating neck; FIG. 10 is a schematic diagram illustrating an embodiment having an upper vent wall made of thermally insulating material. 4... Lower heater, N... Dobe heater, 1, 2 ・
Heater tube, 1... lower heater tube, 2... - Dobe heater tube, 3... lower heater fin, 4... upper heater fin, 5'+ 5'/... ventilation hole 6. Thermal insulation lining, 7. Thermal insulation strip, 8. The gap between the fin 3 and the cow, 9 Thermal insulation insert, 10. Thermal insulation Neck, ll... Heat insulation bridge, 12... Heat insulation plate, 13... Gap, ■4...
・Passway, 15...Air shutter, a...Lower heating zone, b.Intermediate section, C...Lower heating zone Procedural amendment (method) May 1985, Director General of the Patent Office 1. Display of case 1982 Patent Application No. 274242 2
, Title of the invention Multivalent Heater 3, Relationship with the person making the amendment Patent applicant Mr. Elle Name Ulrich Guri is the first person 4, Agent 6, Subject of the amendment (1) Drawing

Claims (1)

【特許請求の範囲】 ■、異なるエネルギー源から異なる温度の流体が供給さ
肚かつ底部および頂部の開いた、加熱される空気用の通
路を形成する熱伝導フィンに連結されている若干の管を
有するマルチ、Sレントヒータにおいて、高温部分と低
温部分との間に熱絶縁ゾーン(6,7,9,10,11
)が配置されていることを特徴とするマルチパレントヒ
ーク。 2、 高温のフィン(4)が通気孔の壁(5)から熱的
に絶縁されている、特許請求の範囲第1項記載のヒータ
。 3、低温のフィン(3)も通気孔の金属壁(5)から熱
的に絶縁されている、特許請求の範囲第2項記載のヒー
タ。 4、固形の熱絶縁材料を特徴する特許請求の範囲第1項
から第3項ま↑のいずれか1項記載のヒータ。 5、個々のフィン(3,4)が通気孔の金属壁(5)か
ら熱的に絶縁されている、特許請求の範囲第1項から第
4項までのいずれか1項記載のヒータ。 6、金属壁(5)が、熱絶縁挿入体(9)によって連結
さnている別個の部分からなる、特許請求の範囲第1項
から第5項までのいずれか1項記載のヒータ。 7 個々のフィン(3,4)および少なくとも高温のフ
ィン(4)が、熱絶縁ストリップ(7)によって通気孔
の壁(5)に連結されている、特許請求の範囲第1項か
ら第6項までのいずれか1項記載のヒータ。 8 高温および低温のフィンの群および少なくとも高温
のフィンの群が、そ扛ぞt熱絶縁内張シ(6)によって
包囲されている、特許請求の範囲第1項から第7項まで
のいずれか1項記載のヒータ。 9 通気孔の壁(5)および少なくとも高温のゾーン内
の壁自体が、熱絶縁材料からなる、特許請求の範囲第1
項から第4項までのいずれか1項記載のヒータ。 10、高温ゾーンと低温ゾーンとの間の通気孔の壁(5
,5・・・)の中間部(b)が熱伝導材料からなシかつ
熱的に絶縁されていない、特許請求の範囲第9項記載の
ヒータ。 11、通気孔の外壁(5)が熱伝導材料からなる、特許
請求の範囲第10項記載のヒータ。
[Claims] ■ Several tubes supplied with fluids of different temperatures from different energy sources and connected to heat-conducting fins that are open at the bottom and top and form passages for the air to be heated. In multi-, S-rent heaters, there is a thermal insulation zone (6, 7, 9, 10, 11
) is located. 2. Heater according to claim 1, wherein the hot fins (4) are thermally insulated from the vent wall (5). 3. Heater according to claim 2, wherein the cold fins (3) are also thermally insulated from the metal wall (5) of the vent. 4. The heater according to any one of claims 1 to 3, which is characterized by a solid heat insulating material. 5. Heater according to any one of claims 1 to 4, wherein the individual fins (3, 4) are thermally insulated from the metal wall (5) of the vent. 6. Heater according to any one of claims 1 to 5, wherein the metal wall (5) consists of separate parts connected by a thermally insulating insert (9). 7. Claims 1 to 6, wherein the individual fins (3, 4) and at least the hot fin (4) are connected to the wall (5) of the vent by means of a thermally insulating strip (7). The heater according to any one of the preceding items. 8. Any of claims 1 to 7, wherein the group of hot and cold fins and at least the group of hot fins are surrounded by a thermally insulating lining (6). The heater according to item 1. 9. Claim 1, wherein the wall (5) of the vent hole and the wall itself at least in the hot zone consist of a thermally insulating material.
The heater according to any one of Items 1 to 4. 10. Wall of ventilation hole between hot zone and cold zone (5
, 5...) are made of a thermally conductive material and are not thermally insulated. 11. The heater according to claim 10, wherein the outer wall (5) of the vent is made of a thermally conductive material.
JP59274242A 1983-12-29 1984-12-27 Multivalent radiator Expired - Fee Related JPH0689934B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3347438.9 1983-12-29
DE3347438A DE3347438A1 (en) 1983-12-29 1983-12-29 MULTIVALENT RADIATOR FOR INDOOR AIR HEATING

Publications (2)

Publication Number Publication Date
JPS60228896A true JPS60228896A (en) 1985-11-14
JPH0689934B2 JPH0689934B2 (en) 1994-11-14

Family

ID=6218374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59274242A Expired - Fee Related JPH0689934B2 (en) 1983-12-29 1984-12-27 Multivalent radiator

Country Status (4)

Country Link
EP (1) EP0148495B1 (en)
JP (1) JPH0689934B2 (en)
AT (1) ATE41226T1 (en)
DE (2) DE3347438A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101245971B (en) * 2007-04-10 2010-12-08 马永锡 Enclosed cavity type heat exchanger
JP5006122B2 (en) 2007-06-29 2012-08-22 株式会社Sokudo Substrate processing equipment
JP5128918B2 (en) 2007-11-30 2013-01-23 株式会社Sokudo Substrate processing equipment
JP5001828B2 (en) 2007-12-28 2012-08-15 株式会社Sokudo Substrate processing equipment
JP5179170B2 (en) 2007-12-28 2013-04-10 株式会社Sokudo Substrate processing equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE840252C (en) * 1942-06-06 1952-05-29 Basf Ag Gas-heated cross-flow heat exchanger
FR1217649A (en) * 1958-05-17 1960-05-04 Central heating radiator with hot water or low pressure steam
FR1389311A (en) * 1964-04-13 1965-02-12 Finned tube system, in particular for steam boiler feedwater preheaters
DE2747344A1 (en) * 1977-10-21 1979-04-26 Gerhard Dipl Ing Pruefling Heating radiator with rectangular steel water tubes - has adhesive bonded aluminium ribs providing high heat transfer rate
DE7928453U1 (en) * 1979-10-06 1980-02-28 Skapargiotis, Georg, 7850 Loerrach RADIATOR, IN PARTICULAR FOR A CENTRAL HEATING SYSTEM
DE2945071A1 (en) * 1979-11-08 1981-05-21 Ulrich 2814 Bruchhausen-Vilsen Grigat Heat exchanger which operates upward air flow - directed across horizontal pipes of conventional and solar heating systems

Also Published As

Publication number Publication date
DE3347438C2 (en) 1987-06-04
EP0148495A3 (en) 1986-07-23
JPH0689934B2 (en) 1994-11-14
EP0148495B1 (en) 1989-03-08
ATE41226T1 (en) 1989-03-15
DE3477049D1 (en) 1989-04-13
EP0148495A2 (en) 1985-07-17
DE3347438A1 (en) 1985-07-18

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