WO2020250871A1 - Physical quantity detection device - Google Patents
Physical quantity detection device Download PDFInfo
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- WO2020250871A1 WO2020250871A1 PCT/JP2020/022622 JP2020022622W WO2020250871A1 WO 2020250871 A1 WO2020250871 A1 WO 2020250871A1 JP 2020022622 W JP2020022622 W JP 2020022622W WO 2020250871 A1 WO2020250871 A1 WO 2020250871A1
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- physical quantity
- hole
- detecting device
- quantity detecting
- humidity sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Definitions
- the present invention relates to, for example, a physical quantity detecting device for detecting a physical quantity of intake air of an internal combustion engine, and particularly to a device including a sensor for measuring the humidity of a fluid.
- Patent Document 1 As an example of a physical quantity detection device provided with a sensor for measuring humidity, there is a technique disclosed in Patent Document 1.
- the hole may be blocked.
- the water droplets adhering to the wall surface ride on the flow and separate from the wall surface, so that the water droplets can be prevented from staying on the wall surface.
- Patent Document 1 when a ventilation hole is formed in a portion where the housing is thick, the pressure loss increases due to the thick housing, so that the flow velocity around the ventilation hole decreases and water droplets ventilate. There is a risk of staying around the hole.
- the present invention has been made in consideration of the above points, and an object of the present invention is to provide a highly reliable physical quantity detecting device.
- the physical quantity detecting device of the present invention includes a humidity sensor provided in a space formed by the first member and the second member, and a step shape is formed in the first member to form the space. A hole for communicating with the outside is formed in the lower part of the step.
- the plan view of the physical quantity detection apparatus in 1st Example The side view of the physical quantity detection apparatus in 1st Example. The rear view of the physical quantity detection apparatus in 1st Example. BB sectional view of FIG. 1 of the physical quantity detecting device in the first embodiment. A cross-sectional enlarged view of FIG. 1A of the physical quantity detecting device in the first embodiment. Rear view of the physical quantity detecting device in the first embodiment with the cover removed. Plane enlarged view of the physical quantity detection device in the second embodiment CC sectional view of FIG. 6 of the physical quantity detecting device in the second embodiment.
- Example 1 of the present invention will be described with reference to FIGS. 1 to 6.
- the physical quantity detecting device 1 of this embodiment includes a housing 2, a cover 3, and a humidity sensor 4 arranged in a space formed by using the housing 2 and the cover 3.
- the humidity sensor 4 is a sensor for measuring the humidity of a fluid, and is a dielectric type or thermal type sensor.
- the physical quantity detection device 1 has a flange 5 for attaching to a tube (not shown) through which the medium to be measured flows, and by inserting a part of the physical quantity detection device 1 through an insertion hole formed in the tube, a flange is provided.
- the tip side (lower side of the neck) is arranged in the pipe from 5 to measure the physical quantity of the medium to be measured.
- the housing 2 has a stepped shape having a stepped upper step portion 13 having a thick root side (flange 5 side) and a stepped lower step portion 14 having a thin tip side.
- a hole 11 for communicating with the space in which the humidity sensor 4 is arranged is formed in the lower step portion 14.
- a pressure loss difference is generated between the thick portion and the thin portion. Since the pressure loss in the thin portion is smaller than that in the thick portion, the flow rate in the thin portion is increased, and the flow velocity is increased accordingly.
- the hole 11 in the lower step portion 14 the hole 11 is provided in the portion where the flow velocity is high, so that foreign matter such as water is less likely to remain around the hole 11, so that the water resistance is improved and the reliability is improved.
- the physical quantity detecting device 1 is cantilevered and fixed by the flange 5 and the tip side has a free end, it is desirable to have a shape having a step lower step portion 14 on the tip side in order to ensure earthquake resistance. Further, it is better that the lower step portion 14 is formed by extending from the upstream end portion to the downstream end portion because the pressure loss is reduced.
- the hole 11 is provided in the protruding portion 10 protruding from the lower step portion 14.
- the hole 11 By forming the hole 11 in the protruding portion 10, it is possible to prevent water droplets traveling on the wall surface of the housing 2 from forming a water film and blocking the hole 11.
- the protruding height of the protruding portion 10 By setting the protruding height of the protruding portion 10 to be equal to or less than the step height, which is the distance from the step lower step portion 14 to the step upper step portion 13, the protruding portion 10 without making the maximum thickness of the physical quantity detecting device 1 thicker than before. Can be formed.
- the physical quantity detecting device 1 is used by being inserted through an insertion hole provided in the pipe.
- the protruding portion 10 may be caught when the physical quantity detecting device 1 is attached. There is, and the installation workability deteriorates.
- the cover 3 also has a hole 13 for connecting the space where the humidity sensor 4 is arranged and the outside.
- a hole 13 for connecting the space where the humidity sensor 4 is arranged and the outside.
- the humidity sensor 4 is mounted on a circuit board 6 having a shape extending to the tip side.
- a flow rate sensor, a pressure sensor, or a temperature sensor may be mounted on the circuit board 6.
- each sensor is mounted on the circuit board 6 in the order of the pressure sensor, the flow rate sensor, the humidity sensor, and the temperature sensor from the root side (flange side).
- the humidity sensor 4 can be efficiently arranged on the tip end side of the housing 2, so that the size can be reduced and the pressure loss of the physical quantity detecting device 1 can be reduced.
- the humidity sensor 4 is offset so as not directly visible from the holes 11 and 12.
- a step shape may be formed in the cover 3 and a hole may be formed in the lower step portion.
- the physical quantity detecting device 1 has a first member and a second member, the first member has a stepped shape, and the lower step portion has a hole for ventilation.
- the physical quantity detection device 1 of the present embodiment includes a humidity sensor provided in a space formed by the first member and the second member, a step shape is formed in the first member, and the space is formed in the lower part of the step. A hole for communication is formed. According to this embodiment, a pressure loss difference is generated due to the shape of the step, and a hole is formed in the lower part of the step where the pressure loss is small (the flow velocity is fast), so that foreign matter such as water is unlikely to remain around the hole. Because it can be done, it has the effect of improving reliability.
- the lower step portion on the tip side because it is possible to improve water resistance while ensuring earthquake resistance. Further, it is more preferable to form a protruding portion protruding from the lower step portion and to form a hole in the protruding portion because the water resistance is further improved. Further, it is more preferable that the height of the protruding portion is set to be equal to or less than the step, because the decrease in workability due to the provision of the protruding portion can be suppressed. Further, it is preferable to form a hole in the second member for communicating the space and the outside because the responsiveness is improved.
- the flow direction can be made uniform, which is more preferable.
- the humidity sensor is arranged so as to be offset from the holes of the first member and the holes of the second member so that water can be prevented from directly flying to the humidity sensor.
- Example 2 of the present invention will be described with reference to FIGS. 7 and 8. The description of the same configuration as that of the first embodiment will be omitted.
- FIG. 7 is an enlarged view of the periphery of the protrusion 10
- FIG. 8 is a cross-sectional view taken along the line CC.
- the physical quantity detecting device 1 of this embodiment includes a groove 15 formed around the protrusion 10. Since the water droplets traveling on the wall surface are guided by the groove 15, the possibility of reaching the protrusion 10 is reduced, and the water resistance is further improved.
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- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention prevents water from clogging an introduction hole to a humidity sensor. A stepped shape is formed in which the thickness of the tip-end side of a housing is reduced, and the introduction hole to the humidity sensor is formed on the bottom level side of the stepped shape.
Description
本発明は、例えば内燃機関の吸入空気の物理量を検出する物理量検出装置に関し、特に流体の湿度を計測するセンサを備えるものに関する。
The present invention relates to, for example, a physical quantity detecting device for detecting a physical quantity of intake air of an internal combustion engine, and particularly to a device including a sensor for measuring the humidity of a fluid.
湿度を計測するセンサを備える物理量検出装置の例として、特許文献1に開示されている技術がある。
As an example of a physical quantity detection device provided with a sensor for measuring humidity, there is a technique disclosed in Patent Document 1.
被計測媒体に含まれる水分が物理量検出装置の壁面に付着し、環境センサが配置される空間へ連通する孔に留まると、孔が閉塞されてしまう虞がある。被計測媒体の流れ速い場合には、壁面に付着した水滴は流れに乗って壁面から離れるため、水滴が壁面に留まることを抑制できる。しかしながら、特許文献１に記載のように、ハウジングの厚みが厚い箇所に換気孔を形成すると、ハウジングが厚くなったことで圧力損失が高まることから、換気孔周囲における流速の低下し、水滴が換気孔周辺に留まってしまう虞がある。
If the water contained in the medium to be measured adheres to the wall surface of the physical quantity detection device and stays in the hole communicating with the space where the environment sensor is arranged, the hole may be blocked. When the flow of the medium to be measured is fast, the water droplets adhering to the wall surface ride on the flow and separate from the wall surface, so that the water droplets can be prevented from staying on the wall surface. However, as described in Patent Document 1, when a ventilation hole is formed in a portion where the housing is thick, the pressure loss increases due to the thick housing, so that the flow velocity around the ventilation hole decreases and water droplets ventilate. There is a risk of staying around the hole.
本発明は、上記の点に顧みてなされたものであり、その目的とするところは、信頼性の高い物理量検出装置を提供することである。
The present invention has been made in consideration of the above points, and an object of the present invention is to provide a highly reliable physical quantity detecting device.
上記課題を解決するために、本発明の物理量検出装置は、第１部材と第２部材とで形成される空間に設けられる湿度センサを備え、前記第１部材に段差形状が形成され、前記空間と外部とを連通する為の孔は、段差下段部に形成されている。
In order to solve the above problems, the physical quantity detecting device of the present invention includes a humidity sensor provided in a space formed by the first member and the second member, and a step shape is formed in the first member to form the space. A hole for communicating with the outside is formed in the lower part of the step.
本発明によれば、信頼性の高い物理量検出装置を提供することが可能となる。
According to the present invention, it is possible to provide a highly reliable physical quantity detecting device.
以下、本発明の実施例について図を用いて説明する。
Hereinafter, examples of the present invention will be described with reference to the drawings.
本発明の実施例１について、図１から図６を用いて説明する。
Example 1 of the present invention will be described with reference to FIGS. 1 to 6.
本実施例の物理量検出装置１は、ハウジング２と、カバー３と、ハウジング２とカバー３とを用いて形成される空間内に配置される湿度センサ４と、を備える。湿度センサ４は流体の湿度を計測するためのセンサであり、誘電式や熱式等のセンサである。物理量検出装置１は被計測媒体が流れる管（図示せず）に取り付けるためのフランジ５を有しており、管に形成された挿入孔から物理量検出装置１の一部を挿入することで、フランジ５から先端側（首下側）が管内に配置されて被計測媒体の物理量を計測する。
The physical quantity detecting device 1 of this embodiment includes a housing 2, a cover 3, and a humidity sensor 4 arranged in a space formed by using the housing 2 and the cover 3. The humidity sensor 4 is a sensor for measuring the humidity of a fluid, and is a dielectric type or thermal type sensor. The physical quantity detection device 1 has a flange 5 for attaching to a tube (not shown) through which the medium to be measured flows, and by inserting a part of the physical quantity detection device 1 through an insertion hole formed in the tube, a flange is provided. The tip side (lower side of the neck) is arranged in the pipe from 5 to measure the physical quantity of the medium to be measured.
ハウジング２は、根本側（フランジ５側）の厚みが厚い段差上段部１３と先端側の厚みが薄くなるような段差下段部１４を有する段差形状を有している。段差下段部１４に、湿度センサ４が配置されている空間に連通する為の孔１１が形成されている。ハウジング２に段差形状を形成することで、厚い部分と薄い部分とで圧力損失差を発生させている。薄い部分の方が厚い部分よりも圧力損失が小さいため、薄い部分の流量が大きくなり、それに伴い流速が早くなる。段差下段部１４に孔１１を形成することで、孔１１を流速を早い部分に設けることにより、水等の異物が孔１１周辺に残留しにくくできるため、耐水性が向上し、信頼性が向上するという効果を奏する。また、物理量検出装置１はフランジ５により片持ち固定され、先端側は自由端となることから、耐震性を確保するためには段差下段部１４を先端側に有する形状とすることが望ましい。また、段差下段部１４は、上流端部から下流端部まで延伸して形成されると圧力損失が低減するためより良い。
The housing 2 has a stepped shape having a stepped upper step portion 13 having a thick root side (flange 5 side) and a stepped lower step portion 14 having a thin tip side. A hole 11 for communicating with the space in which the humidity sensor 4 is arranged is formed in the lower step portion 14. By forming a stepped shape in the housing 2, a pressure loss difference is generated between the thick portion and the thin portion. Since the pressure loss in the thin portion is smaller than that in the thick portion, the flow rate in the thin portion is increased, and the flow velocity is increased accordingly. By forming the hole 11 in the lower step portion 14, the hole 11 is provided in the portion where the flow velocity is high, so that foreign matter such as water is less likely to remain around the hole 11, so that the water resistance is improved and the reliability is improved. It has the effect of doing. Further, since the physical quantity detecting device 1 is cantilevered and fixed by the flange 5 and the tip side has a free end, it is desirable to have a shape having a step lower step portion 14 on the tip side in order to ensure earthquake resistance. Further, it is better that the lower step portion 14 is formed by extending from the upstream end portion to the downstream end portion because the pressure loss is reduced.
孔１１は、段差下段部１４から突出している突出部１０に設けていると更に良い。突出部１０に孔１１を形成することで、ハウジング２の壁面を伝った水滴が水膜を形成して孔１１を閉塞することを抑制することが出来る。突出部１０の突出高さを、段差下段部１４から段差上段部１３までの距離である段差高さ以下にすることで、物理量検出装置１の最大厚みを従来よりも厚くすることなく突出部１０を形成することが可能となる。物理量検出装置１は管に設けられる挿入孔から挿入されて利用されるところ、突出部１０を単にハウジング２から突出させたとすると、突出部１０が物理量検出装置１の取り付け時に引っかかってしまう可能性があり、取り付け作業性が悪化してしまう。ハウジング２に段差形状を形成し、段差下段部１４に突出部１０を形成することで、突出部１０による取り付け時の引っかかりを抑制することが可能となるため、耐水性を向上させるために突出部１０を設けた場合であっても、取り付け作業性の悪化を抑制するという効果も奏する。
It is even better if the hole 11 is provided in the protruding portion 10 protruding from the lower step portion 14. By forming the hole 11 in the protruding portion 10, it is possible to prevent water droplets traveling on the wall surface of the housing 2 from forming a water film and blocking the hole 11. By setting the protruding height of the protruding portion 10 to be equal to or less than the step height, which is the distance from the step lower step portion 14 to the step upper step portion 13, the protruding portion 10 without making the maximum thickness of the physical quantity detecting device 1 thicker than before. Can be formed. The physical quantity detecting device 1 is used by being inserted through an insertion hole provided in the pipe. However, if the protruding portion 10 is simply projected from the housing 2, the protruding portion 10 may be caught when the physical quantity detecting device 1 is attached. There is, and the installation workability deteriorates. By forming a stepped shape in the housing 2 and forming a protruding portion 10 in the lower step portion 14, it is possible to suppress catching by the protruding portion 10 at the time of attachment, so that the protruding portion is to improve water resistance. Even when 10 is provided, it also has the effect of suppressing deterioration of mounting workability.
カバー３にも、湿度センサ４が配置される空間と外部とを接続するための孔１３が形成されていると良い。孔１２と孔１３とで入口、出口を形成することで、湿度センサ４へ被計測媒体を取り込みやすくなり、応答性が向上する。孔１２、孔１３を小さく形成することで水滴を取り込みにくくし、フィルタ等の追加部材を設けることなく耐水性を向上させる場合、孔径を小さくしたことにより応答性が悪化する場合があるが、孔１３をさらに形成することで応答性の悪化を抑制することが出来る。孔１２は、管を流れる主流れ方向において孔１１よりも下流側にオフセットして配置している。孔１２から孔１３へと流れる流れ方向を一様化することで、流れ方向が変化することによる流速低下を防止でき、より耐水性が向上する。
It is preferable that the cover 3 also has a hole 13 for connecting the space where the humidity sensor 4 is arranged and the outside. By forming the inlet and the outlet in the hole 12 and the hole 13, it becomes easier to take the medium to be measured into the humidity sensor 4, and the responsiveness is improved. When the holes 12 and 13 are made small to make it difficult to take in water droplets and the water resistance is improved without providing an additional member such as a filter, the responsiveness may be deteriorated by reducing the hole diameter. By further forming 13, the deterioration of responsiveness can be suppressed. The holes 12 are arranged offset to the downstream side of the holes 11 in the main flow direction through the pipe. By making the flow direction from the hole 12 to the hole 13 uniform, it is possible to prevent a decrease in the flow velocity due to the change in the flow direction, and the water resistance is further improved.
湿度センサ４は、先端側まで延伸する形状の回路基板６に実装されている。回路基板６には、流量センサや圧力センサや温度センサが実装されていてもよい。その場合、根本側（フランジ側）から圧力センサ、流量センサ、湿度センサ、温度センサの順で、各センサが回路基板６に実装されているのが望ましい。上記構成によれば、湿度センサ４をハウジング２の先端側に効率的に配置することが可能となるため、小型化が可能となり、物理量検出装置１の圧力損失を低減できる。湿度センサ４は、孔１１、孔１２から直接見えない位置にオフセットして配置されている。孔１１から侵入し、孔１２へ抜ける流れに直接曝されない構造とすることで、水が直接湿度センサ４に飛来することを抑制し、耐水性を向上できる。なお、ハウジング２に段差形状を形成する例を示したが、カバー３に段差形状を形成し、段差下段部に孔を形成してもよい。言い換えると、物理量検出装置１は、第１の部材と第２の部材とを有しており、第１の部材に段差形状を形成し、段差下段部に換気用の孔が形成されている。
The humidity sensor 4 is mounted on a circuit board 6 having a shape extending to the tip side. A flow rate sensor, a pressure sensor, or a temperature sensor may be mounted on the circuit board 6. In that case, it is desirable that each sensor is mounted on the circuit board 6 in the order of the pressure sensor, the flow rate sensor, the humidity sensor, and the temperature sensor from the root side (flange side). According to the above configuration, the humidity sensor 4 can be efficiently arranged on the tip end side of the housing 2, so that the size can be reduced and the pressure loss of the physical quantity detecting device 1 can be reduced. The humidity sensor 4 is offset so as not directly visible from the holes 11 and 12. By adopting a structure that is not directly exposed to the flow that enters through the hole 11 and exits through the hole 12, it is possible to prevent water from directly flying to the humidity sensor 4 and improve the water resistance. Although an example of forming a step shape in the housing 2 is shown, a step shape may be formed in the cover 3 and a hole may be formed in the lower step portion. In other words, the physical quantity detecting device 1 has a first member and a second member, the first member has a stepped shape, and the lower step portion has a hole for ventilation.
本実施例の物理量検出装置１は、第１部材と第２部材とで形成される空間に設けられる湿度センサを備えており、第１部材に段差形状が形成され、段差下段部に前記空間と連通する孔が形成している。本実施例によれば、段差形状により圧力損失差を発生させ、圧力損失の小さい（流速が早い）段差下段部に孔を形成していることから、水等の異物が孔周辺に残留しにくくできるため、信頼性が向上するという効果を奏する。
The physical quantity detection device 1 of the present embodiment includes a humidity sensor provided in a space formed by the first member and the second member, a step shape is formed in the first member, and the space is formed in the lower part of the step. A hole for communication is formed. According to this embodiment, a pressure loss difference is generated due to the shape of the step, and a hole is formed in the lower part of the step where the pressure loss is small (the flow velocity is fast), so that foreign matter such as water is unlikely to remain around the hole. Because it can be done, it has the effect of improving reliability.
また、段差下段部を先端側に形成することで、耐震性を確保しつつ耐水性を向上させることが出来るためより好ましい。さらに、段差下段部から突出させる突出部形成し、突出部に孔を形成すると、さらに耐水性が向上するためより好ましい。さらに、突出部の高さを段差以下とすることで、突出部を設けることによる作業性の低下を抑制できるため、より好ましい。さらに、第２部材にも空間と外部を連通する為の孔を形成することで、応答性が向上するため好ましい。さらに、第１部材の孔に対して第２部材の孔を主流れ方向に対して下流側にオフセットして配置することで、流方向を一様化できるため、より好ましい。湿度センサは、第１部材の孔と第２部材の孔から見えない位置にオフセットして配置されていると、水が直接湿度センサに飛来することを抑制できるため、より好ましい。
Further, it is more preferable to form the lower step portion on the tip side because it is possible to improve water resistance while ensuring earthquake resistance. Further, it is more preferable to form a protruding portion protruding from the lower step portion and to form a hole in the protruding portion because the water resistance is further improved. Further, it is more preferable that the height of the protruding portion is set to be equal to or less than the step, because the decrease in workability due to the provision of the protruding portion can be suppressed. Further, it is preferable to form a hole in the second member for communicating the space and the outside because the responsiveness is improved. Further, by arranging the holes of the second member offset to the downstream side with respect to the main flow direction with respect to the holes of the first member, the flow direction can be made uniform, which is more preferable. It is more preferable that the humidity sensor is arranged so as to be offset from the holes of the first member and the holes of the second member so that water can be prevented from directly flying to the humidity sensor.
本発明の実施例２について図７と図８を用いて説明する。なお、実施例１と同様の構成については説明を省略する。図７は突起部１０周辺を拡大した拡大図であり、図８はＣ－Ｃ断面図である。
Example 2 of the present invention will be described with reference to FIGS. 7 and 8. The description of the same configuration as that of the first embodiment will be omitted. FIG. 7 is an enlarged view of the periphery of the protrusion 10, and FIG. 8 is a cross-sectional view taken along the line CC.
図７、図８に示すように、本実施例の物理量検出装置１は、突起部１０の周辺に形成された溝１５を備えている。壁面を伝ってきた水滴が溝１５にガイドされるため、突起部１０に到達する可能性が低減し、耐水性がより向上する。
As shown in FIGS. 7 and 8, the physical quantity detecting device 1 of this embodiment includes a groove 15 formed around the protrusion 10. Since the water droplets traveling on the wall surface are guided by the groove 15, the possibility of reaching the protrusion 10 is reduced, and the water resistance is further improved.
１…物理量検出装置、２…ハウジング、３…カバー、４…湿度センサ、５…フランジ、６…回路基板１０…突出部、１１…孔、１２…孔、１３…段差上段部、１４…段差下段部、１５…溝、
1 ... Physical quantity detector, 2 ... Housing, 3 ... Cover, 4 ... Humidity sensor, 5 ... Flange, 6 ... Circuit board 10 ... Protruding part, 11 ... Hole, 12 ... Hole, 13 ... Step upper part, 14 ... Step lower stage Part, 15 ... groove,
Claims (8)
- 第１部材と第２部材とで形成される空間に設けられる湿度センサを備える物理量検出装置において、
前記第１部材に段差形状が形成され、
前記空間と外部とを連通する為の孔は、段差下段部に形成されている物理量検出装置。 In a physical quantity detecting device provided with a humidity sensor provided in a space formed by a first member and a second member.
A stepped shape is formed on the first member.
The hole for communicating the space with the outside is a physical quantity detecting device formed in the lower step portion. - 前記段差下段部は、先端側に形成される請求項１に記載の物理量検出装置。 The physical quantity detecting device according to claim 1, wherein the lower step portion is formed on the tip side.
- 前記段差下段部から突出する突出部が形成され、
前記突出部に前記孔が形成される請求項２に記載の物理量検出装置。 A protruding portion protruding from the lower step portion is formed.
The physical quantity detecting device according to claim 2, wherein the hole is formed in the protruding portion. - 前記突出部の高さは、前記段差の高さ以下となるように形成される請求項３に記載の物理量検出装置。 The physical quantity detecting device according to claim 3, wherein the height of the protruding portion is formed so as to be equal to or less than the height of the step.
- 前記第２部材に、前記空間と外部とを連通する為の第２の孔が形成される請求項４に記載の物理量検出装置 The physical quantity detecting device according to claim 4, wherein a second hole for communicating the space and the outside is formed in the second member.
- 前記孔は、前記第２の孔よりも主流方向の上流側にオフセットして形成される請求項５に記載の物理量検出装置。 The physical quantity detecting device according to claim 5, wherein the hole is formed so as to be offset to the upstream side in the mainstream direction from the second hole.
- 前記湿度センサは、前記孔および前記第２の孔から見えない位置にオフセットして配置される請求項６に記載の物理量検出装置。 The physical quantity detecting device according to claim 6, wherein the humidity sensor is arranged offset from the hole and a position invisible from the second hole.
- 前記突起部の周囲に溝が形成されている請求項７に記載の物理量検出装置。 The physical quantity detecting device according to claim 7, wherein a groove is formed around the protrusion.
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| WO2023100213A1 (en) * | 2021-11-30 | 2023-06-08 | 日立Astemo株式会社 | Physical quantity detection device |
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| JP2015004609A (en) * | 2013-06-21 | 2015-01-08 | 日立オートモティブシステムズ株式会社 | Gas sensor device and gas sensor device fitting structure |
| WO2015068569A1 (en) * | 2013-11-07 | 2015-05-14 | 日立オートモティブシステムズ株式会社 | Physical-quantity measurement device |
| JP2015219111A (en) * | 2014-05-19 | 2015-12-07 | 三菱電機株式会社 | Flow rate measurement device |
| JP2017083323A (en) * | 2015-10-29 | 2017-05-18 | 三菱電機株式会社 | Flow rate measurement device |
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| JP2015004609A (en) * | 2013-06-21 | 2015-01-08 | 日立オートモティブシステムズ株式会社 | Gas sensor device and gas sensor device fitting structure |
| WO2015068569A1 (en) * | 2013-11-07 | 2015-05-14 | 日立オートモティブシステムズ株式会社 | Physical-quantity measurement device |
| JP2015219111A (en) * | 2014-05-19 | 2015-12-07 | 三菱電機株式会社 | Flow rate measurement device |
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| WO2023100213A1 (en) * | 2021-11-30 | 2023-06-08 | 日立Astemo株式会社 | Physical quantity detection device |
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