JPH0181529U - - Google Patents
Info
- Publication number
- JPH0181529U JPH0181529U JP1987178462U JP17846287U JPH0181529U JP H0181529 U JPH0181529 U JP H0181529U JP 1987178462 U JP1987178462 U JP 1987178462U JP 17846287 U JP17846287 U JP 17846287U JP H0181529 U JPH0181529 U JP H0181529U
- Authority
- JP
- Japan
- Prior art keywords
- temperature sensor
- level detector
- liquid level
- convection
- thermal liquid
- 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
Links
- 239000007788 liquid Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
図面第１図〜第３図は本考案に係る熱式液位検
出器の実施例を示し、第１図ａは側面図、ｂはａ
のＢ―Ｂ断面図、第２図ａ，ｂ，ｃは熱による対
流の様子の説明図、第３図は放熱係数特性のグラ
フ図であり、第４図は従来の熱式液位検出器の構
成図、第５図は傍熱型温度センサの断面図、第６
図は液体と気体との放熱特性のグラフ図である。
符号２は傍熱型温度センサ、３は補正用温度セ
ンサ、４は保護管、５はヒータ、６はサーミスタ
、１０は対流プレートである。
Figures 1 to 3 show an embodiment of the thermal liquid level detector according to the present invention, where Figure 1a is a side view and Figure 1b is a side view.
Figure 2 a, b, and c are explanatory diagrams of convection due to heat, Figure 3 is a graph of heat radiation coefficient characteristics, and Figure 4 is a conventional thermal liquid level detector. Fig. 5 is a cross-sectional view of the indirectly heated temperature sensor;
The figure is a graph of heat dissipation characteristics between liquid and gas. Reference numeral 2 denotes an indirect heating type temperature sensor, 3 a correction temperature sensor, 4 a protection tube, 5 a heater, 6 a thermistor, and 10 a convection plate.
Claims (1)
度変化を検出する管体状の加熱型温度センサと、
該加熱型温度センサの近傍に配置して周囲温度を
検出する管体状の補正用温度センサとから構成す
る熱式液位検出器において、前記加熱型温度セン
サの管体部に液体の対流を前記加熱型温度センサ
側から補正用温度センサに生じさせる対流プレー
トを設けたことを特徴とする熱式液位検出器。 ２ 前記対流プレートは前記加熱型温度センサの
先端より稍々上方に設けた実用新案登録請求の範
囲第１項に記載の熱式液位検出器。 ３ 前記対流プレートは液体の境界面に対して所
定の角度で前記補正用温度センサ側に向けて斜め
に立ち上るように設けた実用新案登録請求の範囲
第１項に記載の熱式液位検出器。 ４ 前記対流プレートは断熱性を有する板状部材
とした実用新案登録請求の範囲第１項に記載の熱
式液位検出器。[Claims for Utility Model Registration] 1. A tubular heating type temperature sensor that radiates heat and detects temperature changes caused by changes in the amount of heat radiated;
In a thermal liquid level detector comprising a tubular correction temperature sensor disposed near the heating temperature sensor to detect ambient temperature, convection of liquid is caused in the tubular portion of the heating temperature sensor. A thermal liquid level detector characterized in that a convection plate is provided that causes a convection to occur from the heating type temperature sensor side to the correction temperature sensor. 2. The thermal liquid level detector according to claim 1, wherein the convection plate is provided slightly above the tip of the heating type temperature sensor. 3. The thermal liquid level detector according to claim 1, wherein the convection plate is provided so as to rise obliquely toward the correction temperature sensor at a predetermined angle with respect to the boundary surface of the liquid. . 4. The thermal liquid level detector according to claim 1, wherein the convection plate is a plate-like member having heat insulation properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17846287U JPH0419479Y2 (en) | 1987-11-24 | 1987-11-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17846287U JPH0419479Y2 (en) | 1987-11-24 | 1987-11-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0181529U true JPH0181529U (en) | 1989-05-31 |
| JPH0419479Y2 JPH0419479Y2 (en) | 1992-05-01 |
Family
ID=31470077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17846287U Expired JPH0419479Y2 (en) | 1987-11-24 | 1987-11-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419479Y2 (en) |
-
1987
- 1987-11-24 JP JP17846287U patent/JPH0419479Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0419479Y2 (en) | 1992-05-01 |
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