JPS5841A - Heat exchanger utilizing pipe heater - Google Patents
Heat exchanger utilizing pipe heaterInfo
- Publication number
- JPS5841A JPS5841A JP9710081A JP9710081A JPS5841A JP S5841 A JPS5841 A JP S5841A JP 9710081 A JP9710081 A JP 9710081A JP 9710081 A JP9710081 A JP 9710081A JP S5841 A JPS5841 A JP S5841A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- fluid
- liquid
- flow path
- flow
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
- F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は中空管のパイプヒータを用いた給湯。[Detailed description of the invention] The present invention is a hot water supply using a hollow pipe heater.
暖房等液体を加熱する装置における熱交換器に関する。The present invention relates to a heat exchanger in a device that heats a liquid, such as a space heater.
かかる熱交換器における中空管のパイプヒータは液体と
熱交換する上で、小さな体積でもって大きな熱交換面積
が得られるという大きなメリットを有する反面、液体の
流れを止めた後、中空管の中にたまった液体がヒータの
熱容量によって激しく温度上昇するのを防止できないと
いう欠点がtっだ。すなわち、中空密閉中に液体がある
ため熱放散がほとんどできずその分だけ液体の温度上昇
が激しくなることによっていた。The hollow tube pipe heater in such a heat exchanger has the great advantage of being able to obtain a large heat exchange area with a small volume when exchanging heat with the liquid. The drawback is that the temperature of the liquid accumulated inside cannot be prevented from rising rapidly due to the heat capacity of the heater. In other words, since the liquid is inside the hollow seal, almost no heat can be dissipated, and the temperature of the liquid increases accordingly.
上記のごとく液体の温度上昇が激しいと一度停止して再
度使用する時に高温の液体を噴出するため、例えば水の
熱交換器として湯沸器などに応用した場合、やけどの心
配が生じていた。As mentioned above, if the temperature of the liquid rises rapidly, the high-temperature liquid will be ejected when the system is stopped and used again, so there is a risk of burns if the system is used as a heat exchanger for water, such as in a water heater.
本発明は、ヒータの外壁側より液体を流入させ、内壁を
通過させて流出させる構成とし、上記ヒータの頭頂部に
エジェクターを設け、このエジェクターの吸引口と上記
ヒータの出口を連通ずる連通管を設け、この連通管の途
中に液体溜り部を設けることにより、ヒータの熱交換に
障害を与えることなく簡単な構成で後沸きを防止するノ
くイブヒータ応用熱交換器を提供するものである。The present invention has a configuration in which the liquid flows in from the outer wall side of the heater and flows out through the inner wall, an ejector is provided at the top of the heater, and a communication pipe is provided that communicates the suction port of the ejector with the outlet of the heater. To provide a heat exchanger using a hollow heater which prevents after-boiling with a simple structure without impeding heat exchange of the heater by providing a liquid reservoir part in the middle of the communication pipe.
本発明を実施するだめの一実施例にっていり下、詳細に
説明する。An embodiment of the present invention will now be described in detail.
第1図はパイプヒータの一例を示す図である。FIG. 1 is a diagram showing an example of a pipe heater.
パイプヒータ1は外壁2と内壁3を有し、内壁3の部分
は中空の貫通管となっている。ヒータ4は、外壁2と内
壁3の中間に埋め込まれている。ノ々イブヒータ1の適
当な部分には構成上必要なフランジ5が一体に取付けら
れている。The pipe heater 1 has an outer wall 2 and an inner wall 3, and the inner wall 3 is a hollow penetrating pipe. The heater 4 is embedded between the outer wall 2 and the inner wall 3. A flange 5 necessary for the construction is integrally attached to a suitable part of the knobbic heater 1.
第2図はパイプヒータ1を使用した熱交換器の断面図を
示す。パイプヒータ1の外側にはフランジ5の0リング
6によりシールされた外筒7がフランジ5に取付けられ
ている。外筒7には液体流入口8がフランジ5の近傍に
設けられ、ノ;イブヒータ1の外壁2との間に第1流路
9を形成している。パイプヒータ1の頭頂部10部には
内壁3を案内壁とするエジェクター11が形成されてい
る。FIG. 2 shows a cross-sectional view of a heat exchanger using the pipe heater 1. On the outside of the pipe heater 1, an outer cylinder 7 sealed by an O-ring 6 of the flange 5 is attached to the flange 5. A liquid inlet 8 is provided in the outer cylinder 7 near the flange 5, and a first flow path 9 is formed between the liquid inlet 8 and the outer wall 2 of the tube heater 1. An ejector 11 is formed in a top portion 10 of the pipe heater 1, with the inner wall 3 serving as a guide wall.
このエジェクター11は、ジェットノズル12とそのセ
ンターに位置した吸引口13により形成される。吸引口
13は連通管14に結合され、連通管14の中間には、
液体量9部15が設けられている。連通管14の他端は
、ノ<イブヒータ1の出口16に連通されている。以上
の構成で以下動作を述べる。This ejector 11 is formed by a jet nozzle 12 and a suction port 13 located at its center. The suction port 13 is connected to a communication pipe 14, and in the middle of the communication pipe 14,
A liquid volume of 9 parts 15 is provided. The other end of the communication pipe 14 is communicated with the outlet 16 of the nob heater 1 . The operation of the above configuration will be described below.
液体流入口8には、液体を供給する管17がフロースイ
ッチ18を介して結合され、出口16には、液体の流れ
を開閉するノ<バルブ19が設けられる。フロースイッ
チ18はヒータ4に液体流れがある時は通電し、流れが
ない時は通電しないように結線構成されている。今バル
ブ19を開放すると管17より液体が供給されフロース
イッチ18を閉成してヒータ4に通電する。液体流れは
、液体流入口8より第1流路9を流れ、ジェットノズル
12より内壁3で形成される第2流路2Qに噴出する。A pipe 17 for supplying liquid is connected to the liquid inlet 8 via a flow switch 18, and the outlet 16 is provided with a valve 19 for opening and closing the flow of the liquid. The flow switch 18 is wired so that it is energized when there is a liquid flow in the heater 4, and is not energized when there is no flow. Now, when the valve 19 is opened, liquid is supplied from the pipe 17, the flow switch 18 is closed, and the heater 4 is energized. The liquid flows through the first channel 9 from the liquid inlet 8 and is ejected from the jet nozzle 12 into the second channel 2Q formed by the inner wall 3.
この時、エジェクター11部の構成により、ジェットノ
ズル12の流れによって吸引口13にジェットノズル1
2の圧力より低い圧力が発生する。第2流路2oに入っ
た流れは、圧力降下を起しつつ出口16よりノ<バルブ
19を介して流出する。ヒータ4により加熱されるため
ノ;イブヒータ1は高温になり内壁3、外壁2を介して
液体に熱を与え温度上昇させてバルブ19より流、出さ
せる。この時、連通管14の流れは、エジェクター11
0作用により、吸引口13の圧力が低下させられるので
、出口16より液体を引っばり、液体量り部15を介し
て出口16から、吸引口13への液体流れを作り出す。At this time, due to the configuration of the ejector 11, the flow of the jet nozzle 12 causes the jet nozzle 1 to enter the suction port 13.
A pressure lower than that of 2 is generated. The flow that has entered the second flow path 2o flows out from the outlet 16 via the valve 19 while causing a pressure drop. Since the liquid is heated by the heater 4, the liquid heater 1 reaches a high temperature and applies heat to the liquid through the inner wall 3 and outer wall 2 to raise the temperature and cause the liquid to flow out from the valve 19. At this time, the flow of the communication pipe 14 is
Since the pressure at the suction port 13 is lowered by the zero action, the liquid is pulled from the outlet 16 and a liquid flow is created from the outlet 16 to the suction port 13 via the liquid measuring section 15.
そのため、第2流路20を通過する液体の流れは、管1
7より流入する液体の量より見かけ上増加し、内壁3と
流体との熱交換を液体量が増加する分だけ増加すること
になる。Therefore, the flow of liquid passing through the second flow path 20 is
This increases the apparent amount of liquid flowing in from 7, and the heat exchange between the inner wall 3 and the fluid increases by the amount of liquid that increases.
次にバルブ19を閉じると、管17よりの液体流入がな
くなり、フロースイッチ18が開放してヒータ4への通
電が停止する。この時、パイプヒータ1の熱容量によっ
て第1流路9および第2流路20の液体は加熱される。Next, when the valve 19 is closed, the liquid no longer flows in from the pipe 17, the flow switch 18 is opened, and the power supply to the heater 4 is stopped. At this time, the liquid in the first flow path 9 and the second flow path 20 is heated by the heat capacity of the pipe heater 1.
第1流路9の液体は、静止状態で加熱されても、熱対流
により外筒7より放熱し、過度の温度上昇は防止される
。第2流路20の方は、加熱された液体が密度が小さく
なって上昇し、吸引口13から連通管14に入り、液体
量り部15を介して連通管14、出口16へと自然対流
を発生する。この自然対流により液体量り部16の液体
が出口16より流入して第2流路2oの液体の過度の温
度上昇を防止するのである。以上の動作によって、液体
の流れを止めた時生ずるパイプヒータ1の熱容量による
過度の液体温度上昇を防止する。今仮に、エジェクター
11を設けないで連通管14だけを設置するとエジェク
ター11の圧力降下がないため、第1流路9の流れが、
第2流路20と連通管14に分配されて流れ、連通管1
4に流れる液体量だけ第2流路20の液体量が減少し、
内壁3と液体との熱交換量が減少し、パイプヒータ1の
異常温度上昇を起こす。これは、パイプヒータ1の熱量
を有効に液体に伝えられないことによる。これに対して
、エジェクター11を設けると、反対に第2流路20の
液体量が増加し、有効な熱交換を行えるものである。故
に連通管14を設けてもパイプヒータ1の熱交換に障害
を与えることがなく、又、液体流れを止めた時にも連通
管14の役割を十分果せるのである。Even if the liquid in the first channel 9 is heated in a stationary state, heat is radiated from the outer cylinder 7 by thermal convection, and an excessive temperature rise is prevented. In the second flow path 20, the heated liquid has a lower density and rises, enters the communication pipe 14 from the suction port 13, and flows through the liquid measuring section 15 to the communication pipe 14 and the outlet 16 through natural convection. Occur. Due to this natural convection, the liquid in the liquid metering section 16 flows in from the outlet 16, thereby preventing the liquid in the second flow path 2o from rising excessively in temperature. The above operation prevents an excessive rise in liquid temperature due to the heat capacity of pipe heater 1, which occurs when the flow of liquid is stopped. Now, if only the communication pipe 14 is installed without the ejector 11, there will be no pressure drop in the ejector 11, so the flow in the first flow path 9 will be
The flow is distributed between the second flow path 20 and the communication pipe 14, and the communication pipe 1
The amount of liquid in the second flow path 20 is reduced by the amount of liquid flowing into the second flow path 20,
The amount of heat exchanged between the inner wall 3 and the liquid decreases, causing an abnormal temperature rise in the pipe heater 1. This is because the amount of heat from the pipe heater 1 cannot be effectively transferred to the liquid. On the other hand, when the ejector 11 is provided, the amount of liquid in the second flow path 20 increases, and effective heat exchange can be performed. Therefore, even if the communication pipe 14 is provided, it will not impede the heat exchange of the pipe heater 1, and the communication pipe 14 can sufficiently fulfill its role even when the liquid flow is stopped.
本発明はパイプヒータの内管部の液体流れを止めた時の
液体温度上昇を最低限に押えられるため、異常温度上昇
が起らず、常に適温の液体を供給す*?)−A:ET台
p、L−s、b、V、ニジ、クタ−ノ役宙11≠;シス
テムとしてう1〈作用し、液体流れがある時のヒータと
液体の熱交換を効率よく行うことが可能な上、エジェク
ター自身、構成が簡単なため蝮雑なシステムにならず、
液体流れを止めた時の自然対流をうまく利用して液体の
温度上昇を最低限に押えるものである。The present invention can minimize the rise in liquid temperature when the flow of liquid in the inner tube of the pipe heater is stopped, so no abnormal temperature rise occurs and liquid at an appropriate temperature is always supplied. )-A: ET table p, L-s, b, V, Niji, Kutano role space 11≠; Works as a system to efficiently exchange heat between the heater and the liquid when there is a liquid flow. In addition, the ejector itself has a simple configuration, so it does not become a complicated system.
This effectively utilizes natural convection when the liquid flow is stopped to minimize the temperature rise of the liquid.
第1図は本発明の熱交換器の一実施例におけるパイプヒ
ータの外観図、第2図は同熱交換器の断面図である。
1・・・・・・バイブヒータ、2・・・・・・外壁、3
・・・・・・内壁、4・・・・・・ヒータ、1o・・・
・・・頭頂部、11・・・・・・エジェクター、13・
・・・・・吸引口、14・・・・・・連通管、15・・
・・・・液体溜り部、16・・・・・・出口。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図FIG. 1 is an external view of a pipe heater in an embodiment of the heat exchanger of the present invention, and FIG. 2 is a sectional view of the same heat exchanger. 1... Vibe heater, 2... Outer wall, 3
...Inner wall, 4...Heater, 1o...
...Top of head, 11...Ejector, 13.
...Suction port, 14...Communication pipe, 15...
...Liquid reservoir, 16...Exit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure
Claims (1)
た熱交換器において、このヒータの外壁側より液体を流
入させ、内壁を通過させて流出させる構成とし、上記ヒ
ータの頭頂部にエジェクターを設け、このエジェクター
の吸引口と上記ヒータの出口を連通となし、連通管の途
中に液体溜り部を設けたことを特徴とするパイプヒータ
応用熱交換器。In a heat exchanger using a heater that exchanges heat with a liquid through cylindrical outer and inner walls, the liquid is made to flow in from the outer wall of the heater and flow out through the inner wall, and the top of the heater is A heat exchanger using a pipe heater, characterized in that an ejector is provided, a suction port of the ejector communicates with an outlet of the heater, and a liquid reservoir is provided in the middle of the communication pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9710081A JPS5841A (en) | 1981-06-22 | 1981-06-22 | Heat exchanger utilizing pipe heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9710081A JPS5841A (en) | 1981-06-22 | 1981-06-22 | Heat exchanger utilizing pipe heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5841A true JPS5841A (en) | 1983-01-05 |
Family
ID=14183192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9710081A Pending JPS5841A (en) | 1981-06-22 | 1981-06-22 | Heat exchanger utilizing pipe heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5841A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4713076A (en) * | 1984-04-19 | 1987-12-15 | Klaus Draenert | Coating composition and anchorage component for surgical implants |
US5035715A (en) * | 1986-11-06 | 1991-07-30 | Collagen Corporation | Gamma irradiation of collagen/mineral mixtures |
US5573771A (en) * | 1988-08-19 | 1996-11-12 | Osteomedical Limited | Medicinal bone mineral products |
US5732764A (en) * | 1994-06-30 | 1998-03-31 | Douglas; Richard W. | Truck mounted utility box heater |
-
1981
- 1981-06-22 JP JP9710081A patent/JPS5841A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4713076A (en) * | 1984-04-19 | 1987-12-15 | Klaus Draenert | Coating composition and anchorage component for surgical implants |
US5035715A (en) * | 1986-11-06 | 1991-07-30 | Collagen Corporation | Gamma irradiation of collagen/mineral mixtures |
US5573771A (en) * | 1988-08-19 | 1996-11-12 | Osteomedical Limited | Medicinal bone mineral products |
US5732764A (en) * | 1994-06-30 | 1998-03-31 | Douglas; Richard W. | Truck mounted utility box heater |
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