JPH0373734B2 - - Google Patents
Info
- Publication number
- JPH0373734B2 JPH0373734B2 JP5733083A JP5733083A JPH0373734B2 JP H0373734 B2 JPH0373734 B2 JP H0373734B2 JP 5733083 A JP5733083 A JP 5733083A JP 5733083 A JP5733083 A JP 5733083A JP H0373734 B2 JPH0373734 B2 JP H0373734B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heat insulating
- chamber
- storage material
- insulating
- 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
Links
- 238000005338 heat storage Methods 0.000 claims description 22
- 239000011232 storage material Substances 0.000 claims description 22
- 238000009413 insulation Methods 0.000 claims description 13
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G12—INSTRUMENT DETAILS
- G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
- G12B17/00—Screening
- G12B17/06—Screening from heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
- F01P2003/2278—Heat pipes
Description
【発明の詳細な説明】
本願は、内燃機関に用いられる電子制御装置等
の精密機器、制御機器を高熱から保護するための
断熱装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present application relates to a heat insulating device for protecting precision equipment such as electronic control units and control equipment used in internal combustion engines from high heat.
内燃機関を備えた自動車には、機関作動状態を
制御するための制御装置が用いられる傾向にあ
る。この制御装置は、電子機器から成るのが通常
であり、その性能を正常に保つためには所定温度
以下の雰囲気下に置かれる必要がある。そのた
め、上記装置は、比較的低い恒温状態が得易い車
室内に配置される場合が多い。しかしながら、こ
のように上記装置を車室内に配置した場合には、
該装置と内燃機関とを連結させるためのリード
線、配線が長くなるとともに複雑化し、故障発生
の可能性を増加させ、さらに費用を増加させると
いう問題がともなう。 Vehicles equipped with internal combustion engines tend to use control devices for controlling engine operating conditions. This control device usually consists of electronic equipment, and in order to maintain its performance normally, it needs to be placed in an atmosphere at a predetermined temperature or lower. Therefore, the above-mentioned device is often placed in a vehicle interior where it is easy to obtain a relatively low constant temperature state. However, when the above device is placed inside the vehicle,
Lead wires and wiring for connecting the device and the internal combustion engine become longer and more complicated, increasing the possibility of failure and increasing costs.
このような問題を解消させるため、蓄熱材の断
熱層を設けた断熱容器を内燃機関のエンジン内の
吸気系すなわち外気導入路に配置し、断熱容器内
に上記制御装置を収納するようにした断熱装置が
提案されている。 In order to solve this problem, a heat insulating container provided with a heat insulating layer of heat storage material is placed in the intake system of the internal combustion engine, that is, an outside air introduction path, and the control device is housed inside the heat insulating container. A device has been proposed.
この断熱装置は、エンジンルーム内に設けられ
ているので、配線が複雑化するという欠点を有さ
ず、また蓄熱材の断熱層が、外部から加えられる
熱を溶解潜熱として吸収するから、断熱容器内の
温度が所定期間にわたり、一定温度以下に保持さ
れ、さらに機関作動時に、外気で断熱容器を冷却
し溶解状態にある蓄熱材を固化させその際の凝固
熱を放出させるから、外部エネルギを用いること
なく永続的に使用できるという特長を有してい
る。 Since this heat insulating device is installed inside the engine room, it does not have the disadvantage of complicated wiring, and since the heat insulating layer of the heat storage material absorbs heat added from the outside as latent heat of melting, External energy is used because the internal temperature is maintained below a certain temperature for a predetermined period of time, and when the engine is running, outside air cools the insulating container, solidifies the melted heat storage material, and releases the heat of solidification. It has the advantage of being able to be used permanently.
しかしながら、この断熱装置は、次のような点
において欠点を有する。すなわち、蓄熱材は吸熱
材としてのみらず断熱材として機能するものであ
るから、比較的熱伝導性の低い特性を有している
場合が多い。その場合には、上記冷却時の放熱性
が悪く、短時間に蓄熱材を再生つまり固化させる
ことが困難となることである。したがつて、蓄熱
材が再生する前に、エンジンルーム内が高温にな
つた場合には、その熱を吸収することができず断
熱装置として機能しなくなるのである。このよう
な状態は、内燃機関の作動、停止が短時間で繰り
返えされるような運転状況下で生じ得る。 However, this heat insulating device has the following drawbacks. That is, since the heat storage material functions not only as a heat absorbing material but also as a heat insulating material, it often has relatively low thermal conductivity. In that case, the heat dissipation during cooling is poor, making it difficult to regenerate or solidify the heat storage material in a short period of time. Therefore, if the temperature inside the engine room becomes high before the heat storage material is regenerated, the heat storage material cannot be absorbed and the heat insulating material no longer functions as a heat insulating device. Such a state may occur under operating conditions in which the internal combustion engine is repeatedly activated and deactivated in a short period of time.
したがつて本願は、蓄熱材の断熱層を設けると
ともに該断熱層にウイツクレスタイプヒートパイ
プを設けた断熱装置とし、放熱効果を高めた構成
により上記欠点を解消させたものである。 Therefore, the present application solves the above-mentioned drawbacks by providing a heat insulating device with a heat insulating layer of heat storage material and a Wickless type heat pipe in the heat insulating layer, thereby improving the heat dissipation effect.
実施例により説明すると、第１図は本発明の断
熱装置１であつて、上下ケース２，３を締付具４
で一体化したものである。上下ケース２，３の内
面には、各々蓄熱材５，５が充填された断熱室
６，６が設けられる。上下ケース２，３間には、
たとえば電子機器で成る制御装置７が収容される
収納室８が形成される。断熱室６の蓄熱材５は、
常温下で固相状態を維持し常温以上〜約100℃範
囲の融点を有するものであつて、ステアリン酸、
パラフイン、ナフタリン等の有機物またはチオ硫
酸ソーダ（Na2S2O3・5H2O）等の無機水和塩で
ある。断熱装置器１の断熱室６には、ヒートパイ
プ９の一端側が挿設され該ヒートパイプの他端は
断熱室６外に突出する。ヒートパイプ９は、水平
ではなく、０〜180℃の間の傾斜角をもつて断熱
装置１内に挿設される。１１は冷却フインであ
る。ここで、ヒートパイプ９は、パイプ内が所定
圧に減圧され内部に水、アセトン、アルコール等
の作動流体を封入した周知のものであるが、内部
にウイツクを有しない構造のものである。このよ
うにウイツクを有しないものを以下ウイツクレス
タイプと称する。 To explain with reference to an embodiment, FIG. 1 shows a heat insulating device 1 of the present invention, in which upper and lower cases 2 and 3 are fastened to a fastener 4.
It is integrated with. Insulating chambers 6, 6 filled with heat storage materials 5, 5 are provided on the inner surfaces of the upper and lower cases 2, 3, respectively. Between the upper and lower cases 2 and 3,
A storage chamber 8 is formed in which a control device 7 made of, for example, an electronic device is housed. The heat storage material 5 in the heat insulation chamber 6 is
Stearic acid, which maintains a solid state at room temperature and has a melting point in the range of from room temperature to about 100°C.
These are organic substances such as paraffin and naphthalene, or inorganic hydrated salts such as sodium thiosulfate (Na 2 S 2 O 3 .5H 2 O). One end of a heat pipe 9 is inserted into the heat insulating chamber 6 of the heat insulating device 1, and the other end of the heat pipe protrudes outside the heat insulating chamber 6. The heat pipe 9 is inserted into the heat insulating device 1 not horizontally but at an angle of inclination between 0 and 180°C. 11 is a cooling fin. Here, the heat pipe 9 is a well-known type in which the inside of the pipe is reduced to a predetermined pressure and a working fluid such as water, acetone, alcohol, etc. is sealed therein, but it has a structure that does not have a heat pipe inside. Such a type without a wick is hereinafter referred to as a wickless type.
第２図は、断熱装置の他の実施例であつて、ウ
イツクを有するヒートパイプ１２とウイツクレス
タイプヒートパイプ９とを連結させたヒートパイ
プ１３を用いた構成のものである。すなわち、ウ
イツクを有するヒートパイプ１２は、断熱装置１
ａの断熱室６ａ内に水平に配設され、他方、ウイ
ツクレスタイプヒートパイプ９は垂直に連結され
ている。他の構成は、第１図と同様である。 FIG. 2 shows another embodiment of the heat insulating device, which uses a heat pipe 13 in which a heat pipe 12 having a wick and a wickless type heat pipe 9 are connected. That is, the heat pipe 12 with the heat insulation device 1
The heat pipes 9 are arranged horizontally in the heat insulating chamber 6a, while the heat pipes 9 are vertically connected. The other configurations are the same as in FIG. 1.
第３図の１ｂは、断熱装置の、さらに他の実施
例であつて、ウイツクレスタイプヒートパイプ９
の一端側を断熱室６ｂに間接的に、挿設させた構
成のものである。すなわち、前記パイプ９の一端
は、収納室８内へ貫通させているが、一端より上
方の部分は、断熱室６ｂの壁面を介して、断熱室
６ｂ内に、熱的に連通している。 1b in FIG. 3 shows yet another embodiment of the heat insulating device, which includes a wickless type heat pipe 9.
This configuration has one end side indirectly inserted into the heat insulating chamber 6b. That is, one end of the pipe 9 penetrates into the storage chamber 8, but a portion above the one end is thermally communicated with the inside of the insulation chamber 6b via the wall surface of the insulation chamber 6b.
以上の断熱容器１，１ａ，１ｂは、内燃機関が
収容されるエンジンルーム内、特に好ましくは冷
却フアン近傍、に配設され使用に供される。 The above-described heat-insulating containers 1, 1a, and 1b are placed and used in an engine room in which an internal combustion engine is housed, particularly preferably near a cooling fan.
第１図の断熱装置１の収納室８内に制御装置７
を収容し、これをエンジンルーム内に配設した装
置において（第４図）、内燃機関が高速作動しそ
の後停止した直後の場合には、機関から放出され
る熱によつて、エンジンルーム内の雰囲気温度が
上昇する。この熱は、断熱装置１を加温させる
が、断熱室６内の蓄熱材５が溶融する際に、溶融
熱として吸収される。その結果、断熱装置１の収
納室８内の温度は、所定の期間にわたり一定値以
下に保持されることになる。 A control device 7 is installed in the storage chamber 8 of the heat insulating device 1 shown in FIG.
In a device that accommodates the internal combustion engine and is installed in the engine room (Fig. 4), when the internal combustion engine operates at high speed and then immediately stops, the heat released from the engine causes the internal combustion engine to Atmospheric temperature rises. This heat warms the heat insulating device 1, but when the heat storage material 5 in the heat insulating chamber 6 melts, it is absorbed as heat of fusion. As a result, the temperature within the storage chamber 8 of the heat insulating device 1 is maintained at a constant value or lower for a predetermined period of time.
この状態において、内燃機関が再始動しエンジ
ンルーム内に比較的低温の外気が導入された場
合、あるいはエンジンルーム内が常温にまで戻つ
た場合には断熱装置１内の蓄熱材５が冷却され固
化する。この際に生ずる凝固熱は、ヒートパイプ
９により断熱装置１外へ持ち去られる。その結
果、蓄熱材５の固化速度は早くなる。同時に、ヒ
ートパイプ９は、蓄熱材５に蓄積された熱を汲み
とり、冷却作用もする。ヒートパイプ９の機能
は、従来のものと同様であるが、ウイツクレスタ
イプであるので、断熱装置１の断熱室６内の温度
より断熱装置１外の温度が高くなつた場合でも、
熱を断熱室６側へ流さない。すなわち、ヒートパ
イプ９内の作動流体は、液状で一方端９ａの底部
に溜つているが、溶融状態にある蓄熱材５の熱に
より加熱されると気化し他方端９ｂに向け上昇す
る。気化した作動流体は、そこで冷却されると、
液化して直ちに一方端９ａ底部に戻されることに
なる。したがつて、他方端９ｂ外周の熱を気化潜
熱のかたちで一方端９ａへ移動させることはない
からである。 In this state, if the internal combustion engine is restarted and relatively low-temperature outside air is introduced into the engine room, or if the engine room returns to room temperature, the heat storage material 5 in the insulation device 1 will be cooled and solidified. do. The heat of solidification generated at this time is carried away to the outside of the heat insulating device 1 by the heat pipe 9. As a result, the solidification speed of the heat storage material 5 becomes faster. At the same time, the heat pipe 9 absorbs the heat accumulated in the heat storage material 5 and has a cooling effect. The function of the heat pipe 9 is the same as that of the conventional one, but since it is a wickless type, even if the temperature outside the insulation device 1 becomes higher than the temperature inside the insulation chamber 6 of the insulation device 1,
Prevent heat from flowing to the insulation chamber 6 side. That is, the working fluid in the heat pipe 9 is in a liquid state and accumulates at the bottom of one end 9a, but when heated by the heat of the heat storage material 5 in a molten state, it vaporizes and rises toward the other end 9b. When the vaporized working fluid is cooled there,
It will be liquefied and immediately returned to the bottom of one end 9a. Therefore, the heat on the outer periphery of the other end 9b is not transferred to the one end 9a in the form of latent heat of vaporization.
第２図の断熱装置１ａを用いた装置の場合に
は、水平に位置させたヒートパイプ１２により断
熱室６ａ内の全体にわたり熱が汲み出される。ま
た、第３図の断熱装置１ｂを用いた装置の場合に
は、断熱室６ｂ内のみならず、収納室８内の熱を
もヒートパイプ９により吸い出される。 In the case of the device using the heat insulating device 1a of FIG. 2, heat is pumped out throughout the heat insulating chamber 6a by the horizontally positioned heat pipe 12. Further, in the case of the device using the heat insulating device 1b shown in FIG. 3, heat not only in the heat insulating chamber 6b but also in the storage chamber 8 is sucked out by the heat pipe 9.
このようにして断熱装置１内の蓄熱材５は、エ
ンジンルーム内の温度に応じ、溶融←→固化を繰
り返し内部に熱を吸収しまた蓄積した熱を放出す
る。 In this way, the heat storage material 5 in the heat insulating device 1 repeatedly melts and solidifies depending on the temperature in the engine room, absorbing heat therein and releasing the accumulated heat.
以上のように本発明の断熱装置は、内部に収納
室を有しその周囲に蓄熱材を充填した断熱層を設
けるとともに一端側が該断熱層内に挿設され他端
が断熱層外へ突出するウイツクレスタイプヒート
パイプを設けて成るから、断熱装置の蓄熱材に蓄
えられた熱を短期間で放出させることができ、断
熱特性を向上させる。また、ウイツクレスタイプ
ヒートパイプを用いているから、断熱装置内の温
度よりエンジンルーム内の温度が高くなつた場合
でもヒートパイプによる断熱装置内への熱の移動
を防止でき、断熱装置内が不用意に加熱される虞
れは生じない。 As described above, the heat insulating device of the present invention has a storage chamber inside and a heat insulating layer filled with a heat storage material around the storage chamber, and one end is inserted into the heat insulating layer and the other end protrudes outside the heat insulating layer. Since the heat pipe is provided with a Utskless type heat pipe, the heat stored in the heat storage material of the heat insulating device can be released in a short period of time, improving the heat insulating properties. In addition, since a Uitsukures type heat pipe is used, even if the temperature in the engine compartment becomes higher than the temperature inside the insulation device, it is possible to prevent the transfer of heat into the insulation device by the heat pipe. There is no risk of inadvertent heating.
第１図は、本発明の断熱装置の断熱容器の断面
図、第２図、第３図は断熱装置の他の実施例を示
す断面図そして第４図は制御装置を収容した断熱
装置の断面図である。
５……蓄熱材、６……断熱室、８……収納室、
９……ウイツクレスタイプヒートパイプ。
FIG. 1 is a cross-sectional view of the heat-insulating container of the heat-insulating device of the present invention, FIGS. 2 and 3 are cross-sectional views showing other embodiments of the heat-insulating device, and FIG. 4 is a cross-sectional view of the heat-insulating device housing the control device. It is a diagram. 5... Heat storage material, 6... Heat insulation room, 8... Storage room,
9...Witzkless type heat pipe.
Claims (1)
状態を維持し常温より高い温度で溶融する蓄熱材
が充填された断熱室を設けるとともに一端側が該
断熱室内に挿設され、他端が該断熱室外へ突出す
るウイツクレスタイプヒートパイプを設けて成る
断熱装置。 ２ 蓄熱材がステアリン酸、パラフイン、ナフタ
リンのうちのいずれかの有機物である上記第１項
記載の断熱装置。 ３ 蓄熱材がチオ硫酸ソーダの無機水和塩である
上記第１項記載の断熱装置。[Scope of Claims] 1. A storage chamber is provided inside, and an insulating chamber is provided around the storage chamber filled with a heat storage material that maintains a solid state at room temperature and melts at a temperature higher than room temperature, and one end side is provided within the insulating chamber. A heat insulating device comprising a wickless type heat pipe inserted into the heat pipe and having the other end protruding outside the heat insulating chamber. 2. The heat insulating device according to item 1 above, wherein the heat storage material is an organic substance selected from stearic acid, paraffin, and naphthalene. 3. The heat insulation device according to item 1 above, wherein the heat storage material is an inorganic hydrated salt of sodium thiosulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5733083A JPS59183033A (en) | 1983-03-31 | 1983-03-31 | Heat insulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5733083A JPS59183033A (en) | 1983-03-31 | 1983-03-31 | Heat insulation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59183033A JPS59183033A (en) | 1984-10-18 |
| JPH0373734B2 true JPH0373734B2 (en) | 1991-11-22 |
Family
ID=13052557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5733083A Granted JPS59183033A (en) | 1983-03-31 | 1983-03-31 | Heat insulation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59183033A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7681604B2 (en) * | 2005-05-09 | 2010-03-23 | Kiyoshi Handa | Gas cooling method using a melting/solidifying media for high pressure storage tanks for compressed natural gas or hydrogen |
-
1983
- 1983-03-31 JP JP5733083A patent/JPS59183033A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59183033A (en) | 1984-10-18 |
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