JPH0455516U - - Google Patents
Info
- Publication number
- JPH0455516U JPH0455516U JP9764090U JP9764090U JPH0455516U JP H0455516 U JPH0455516 U JP H0455516U JP 9764090 U JP9764090 U JP 9764090U JP 9764090 U JP9764090 U JP 9764090U JP H0455516 U JPH0455516 U JP H0455516U
- Authority
- JP
- Japan
- Prior art keywords
- bypass passage
- shape
- flow
- hot wire
- 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.)
- Pending
Links
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
Landscapes
- Measuring Volume Flow (AREA)
Description
第１図は本考案の一実施例の外観図、第２図は
その横断面図、第３図〜第５図は他の実施例のバ
イパス通路部の断面図である。
１……熱線、２……感温抵抗体、７……バイパ
ス通路、４……メイン通路、５……電子回路、６
……流量計ボデイ、７……支持ターミナル、８…
…流入空気、９……偏流、１０……はく離渦。
FIG. 1 is an external view of one embodiment of the present invention, FIG. 2 is a cross-sectional view thereof, and FIGS. 3 to 5 are sectional views of bypass passages of other embodiments. 1... Hot wire, 2... Temperature sensitive resistor, 7... Bypass passage, 4... Main passage, 5... Electronic circuit, 6
...Flowmeter body, 7...Support terminal, 8...
...Incoming air, 9...Difference, 10...Separation vortex.
Claims (1)
内部に流量検出用の熱線と温度補償用の感温抵抗
体を備えて吸入空気の一部を流通するバイパス通
路を有する熱線式空気流量計において、前記バイ
パス通路が、 (1) 曲り管形状となつている (2) 径の異なる円管またはだ円管が偏心して
連続する形状となつている (3) 傾斜面を有する形状となつている (4) 管路中に突起や断差を有する形状となつ
ている ことにより、熱線部の空気の流れがバイパス通
路中心部が最大流速とはならない偏流を生じ、そ
の偏流の最大流速となる方向へ熱線をバイパス通
路の中心からずらして設置したことを特徴とする
熱線式空気流量計。 ２ 請求項第１項記載のバイパス通路の形状に加
え、広がり管形状となつていることにより、バイ
パス通路内の空気の流れがはく離渦を生じ、その
はく離渦発生領域の直下となる位置へ熱線を配置
したことを特徴とする熱線式空気流量計。[Claims for Utility Model Registration] 1. A main passage through which most of the intake air flows;
In a hot-wire air flow meter having a bypass passage through which a part of intake air flows, the bypass passage is equipped with a hot wire for flow rate detection and a temperature-sensitive resistor for temperature compensation inside, and the bypass passage has a shape of: (1) a bent pipe; (2) A continuation of circular or elliptical pipes with different diameters in an eccentric manner (3) A shape with an inclined surface (4) A conduit with protrusions or gaps Due to this shape, the air flow in the hot wire section causes a biased flow where the maximum flow velocity is not at the center of the bypass passage, and the hot wire is installed offset from the center of the bypass passage in the direction where the maximum flow velocity of the biased flow is achieved. A hot wire air flowmeter featuring: 2 In addition to the shape of the bypass passage described in claim 1, the shape of the bypass passage is expanded into a tube shape, so that the flow of air within the bypass passage generates a separation vortex, and the hot rays are directed to a position directly below the area where the separation vortex is generated. A hot wire air flowmeter characterized by the arrangement of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9764090U JPH0455516U (en) | 1990-09-19 | 1990-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9764090U JPH0455516U (en) | 1990-09-19 | 1990-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0455516U true JPH0455516U (en) | 1992-05-13 |
Family
ID=31838195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9764090U Pending JPH0455516U (en) | 1990-09-19 | 1990-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455516U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232744A (en) * | 2007-06-18 | 2007-09-13 | Hitachi Ltd | Air flow measurement module |
| JP2007285715A (en) * | 2006-04-12 | 2007-11-01 | Denso Corp | Air flow measurement device |
-
1990
- 1990-09-19 JP JP9764090U patent/JPH0455516U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007285715A (en) * | 2006-04-12 | 2007-11-01 | Denso Corp | Air flow measurement device |
| JP2007232744A (en) * | 2007-06-18 | 2007-09-13 | Hitachi Ltd | Air flow measurement module |
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