JPS6089725A - Pressure sensor device - Google Patents
Pressure sensor deviceInfo
- Publication number
- JPS6089725A JPS6089725A JP19853883A JP19853883A JPS6089725A JP S6089725 A JPS6089725 A JP S6089725A JP 19853883 A JP19853883 A JP 19853883A JP 19853883 A JP19853883 A JP 19853883A JP S6089725 A JPS6089725 A JP S6089725A
- Authority
- JP
- Japan
- Prior art keywords
- pressure sensor
- pressure
- retainer
- case
- bellows
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
【発明の詳細な説明】
産業−１＝の利用分野
本発明は、電動膨張弁、或いは、圧縮機等の制御に使用
されるヒートポンプ式空気調和機の冷凍回路等における
圧力センサー装置に関するものである。Detailed Description of the Invention Field of Application of Industry-1 The present invention relates to a pressure sensor device in a refrigeration circuit of a heat pump type air conditioner used to control an electric expansion valve or a compressor, etc. .
従来例の構成とその問題点
従来、空気調和機、或いは、ヒートポンプ式空気調和機
の冷凍回路等において、例えば、圧縮機の運転停止の制
御を行なう場合には、次のようにして行なわれている。Conventional configuration and its problems Conventionally, in the refrigeration circuit of an air conditioner or a heat pump type air conditioner, for example, when controlling the operation stoppage of a compressor, it was performed as follows. There is.
即ち、冷凍回路の冷媒吐出圧力スイッチで検出して、所
定の圧力以上になると、圧縮機を停止し、そして、冷媒
を高圧側より低圧側にバイパスするなどして圧力を降下
させ、そして所定値になると、再び、運転させる。この
圧力スイッチは、ダイヤスラム、或いは、ベローズ等で
、冷媒圧力を受圧して、所定の圧力以上でＯＦＦ、所定
の圧力以下でＯＮとなるもので、これは設定圧力が一点
であり、連続的なものでない為に、細かい制御が出来な
い。又、この圧力スイッチは、機械式である為に、高価
となり、その反面、正確性、信頼性等に欠けるなどの欠
点を有していた。That is, when the refrigerant discharge pressure switch in the refrigeration circuit detects it and the pressure exceeds a predetermined value, the compressor is stopped, the refrigerant is bypassed from the high pressure side to the low pressure side, etc., to lower the pressure, and then the pressure is lowered to a predetermined value. When that happens, let them drive again. This pressure switch receives the refrigerant pressure using a diaphragm or bellows, and turns OFF when the pressure is above a predetermined pressure and turns ON when the pressure is below a predetermined pressure. Since it is not a physical object, detailed control is not possible. Furthermore, since this pressure switch is mechanical, it is expensive and, on the other hand, has drawbacks such as a lack of accuracy and reliability.
発明の目的
本発明は上記従来の欠点を解消するもので、安価で、し
かも圧力変化を正確に伝えると共に、気密性を確保し、
且、圧力センサーの受圧を正確に規制して取付けが容易
となるようにすることを目的とする。OBJECT OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and is inexpensive, accurately transmits pressure changes, ensures airtightness,
Another object of the present invention is to accurately regulate the pressure received by the pressure sensor so that it can be easily installed.
発明の構成
本発明は、一対のケース内に設けられた圧力室と、この
圧力室内に配設したベローズと、このベローズ内に受圧
部を位置させ、かつ、前記一対のケース間に、外周部を
挾持させる圧力センサーと、この圧力センサーを支持し
、かつ同圧力センサーと一方のケース間に外周を介在し
たりテーナーと、前記圧力センサーの外周部と他方のケ
ース間に介在したバッキングとを備え、前記他方のケー
スは、リテーナ−を軸方向へ案内し、かつ回正めする位
置決め用の目止部を設けたもので、前記リテーナ−が、
前記目止部に嵌合し、少なくともいずれか一方のケース
を締付けだ時、圧力センサーに軸方向への面圧のみをか
けるようにしだものである〇
実施例の説明
本発明による一実施例を第１〜第３図にもとづいて説明
する。第１図は本発明圧力センサー装置を使用したヒー
トポンプ式冷暖房回路である。１はインバーター制御に
よって能力（回転）制御する圧縮機、２は冷暖房時冷媒
を切替える四方弁、３は冷房時、凝縮器として、暖房時
は蒸発器として作用する室外熱交換器、４はパルスモー
タ一式の電動膨張弁で、パルスモータ−に受信する信号
線４ａ を介して電子制御を行なうプリント基板５に接
続されている。６は冷房時、蒸発器として作用し、暖房
時、凝縮器として作用する室内熱交換器、７は吐出管、
８は吸入管、９は吐出管７より導出し、キャピラリチュ
ーブ１ｏを介してプリント基板５に接続され、吐出圧力
（高圧）を受ける本発明の圧力センサー本体、１１は吸
込管８より導出し、キャピラリチューブ１２を介してプ
リント基板６に接続され、吸込圧力（低圧）を受ける本
発明の圧力センサー本体、１３は吸込管８に装着し、吸
入管８の冷媒温度を感知するサーミスターで、リード線
１４を介してプリント基板５に接続している。Structure of the Invention The present invention provides a pressure chamber provided within a pair of cases, a bellows disposed within the pressure chamber, a pressure receiving portion located within the bellows, and an outer peripheral portion between the pair of cases. a pressure sensor that supports the pressure sensor and has an outer periphery interposed between the pressure sensor and one case, and a backing that is interposed between the outer periphery of the pressure sensor and the other case. , the other case is provided with a positioning stop for guiding and correcting the retainer in the axial direction, and the retainer is
When fitted into the blind portion and tightened at least one of the cases, only surface pressure in the axial direction is applied to the pressure sensor.〇Description of Embodiment An embodiment according to the present invention is This will be explained based on FIGS. 1 to 3. FIG. 1 shows a heat pump air conditioning circuit using the pressure sensor device of the present invention. 1 is a compressor whose capacity (rotation) is controlled by inverter control, 2 is a four-way valve that switches the refrigerant during cooling and heating, 3 is an outdoor heat exchanger that acts as a condenser during cooling and as an evaporator during heating, and 4 is a pulse motor. A set of electric expansion valves is connected to a printed circuit board 5 for electronic control via a signal line 4a that is received by a pulse motor. 6 is an indoor heat exchanger that acts as an evaporator during cooling and as a condenser during heating; 7 is a discharge pipe;
8 is a suction pipe, 9 is led out from the discharge pipe 7, is connected to the printed circuit board 5 via the capillary tube 1o, and receives the discharge pressure (high pressure); 11 is led out from the suction pipe 8; The pressure sensor body of the present invention is connected to the printed circuit board 6 via the capillary tube 12 and receives suction pressure (low pressure), and 13 is a thermistor attached to the suction pipe 8 to sense the refrigerant temperature in the suction pipe 8. It is connected to the printed circuit board 5 via a line 14.
こうしたヒートポンプ式の冷凍サイクルに、各々の圧力
センサー本体９，１１を装着しているが、これら圧力セ
ンサー本体９，１１を第２図と、第３図にもとづいて説
明する。Each pressure sensor body 9, 11 is attached to such a heat pump type refrigeration cycle, and these pressure sensor bodies 9, 11 will be explained based on FIG. 2 and FIG. 3.
２ｏは一対のケースであって、袋ナツト状に形成された
一方のケース２１と、冷媒管（吐出管７゜吸入管８）の
キャピラリチューブ１０．１２に接続され、前記一方の
ケース２１と螺合する螺合部２２を有した他方のケース
２３とよシなる。２４はケース２３の中央に貫通し、圧
力室２１５に連通した開口路、２６は前記圧力室２５内
に設けられた金属製等からなり、シリコンオイル等を封
入したベローズ、２７は圧力センサー２８の先端に設け
られた受圧部、２９は圧力センサー２８の座部３０の外
周部と、他方のケース間に介在したリング状のバッキン
グ、３１は前記座部の一部に突起して設けられ、他方の
ケース２３に設けられだ切欠状の目止部３２に嵌合する
突起部、３３はベローズ２６内に受圧部２７とこれを取
付けた部分を入れている圧力センサー２８とベローズ２
６を固着し密封している溶接部、３４は圧力センサー２
８の座部３ｏと密着して圧力センサー２８を支持し、か
つ圧力センサー２８のリード線３５が貫通する穴３６を
有し、この圧力センサー２８と、−へのケース２１間に
外周を介在したりテーナー、３７は、このリテーナ−３
４の円周一部に突起して設けられ、他方のグー２２３側
に設けられた同市部３２に嵌合する突起部、３８はプリ
ント基板６と、リード線３５とを接続したハンダ部であ
る。Reference numeral 2o designates a pair of cases, one of which is shaped like a cap nut, and the other is connected to a capillary tube 10.12 of a refrigerant pipe (discharge pipe: 7 degrees, suction pipe: 8), and is screwed into the first case 21. It is different from the other case 23 which has a matching threaded part 22. 24 is an opening that penetrates the center of the case 23 and communicates with the pressure chamber 215; 26 is a bellows made of metal or the like and filled with silicone oil, etc. provided in the pressure chamber 25; 27 is a bellows of the pressure sensor 28; 29 is a ring-shaped backing interposed between the outer periphery of the seat 30 of the pressure sensor 28 and the other case; 31 is provided protruding from a part of the seat; A projection part 33 fits into a notch-like stopper part 32 provided in the case 23 of the bellows 2, and a pressure sensor 28 which contains the pressure receiving part 27 and the part to which this is attached inside the bellows 26.
6 is the welded part that fixes and seals it, 34 is the pressure sensor 2
The pressure sensor 28 is supported in close contact with the seat 3o of the pressure sensor 28, and has a hole 36 through which the lead wire 35 of the pressure sensor 28 passes, and the outer periphery is interposed between the pressure sensor 28 and the case 21. Or retainer 37 is this retainer-3
A protrusion 38 is a solder part that connects the printed circuit board 6 and the lead wire 35.
上記構成において、他方のケース２３内に設けられた圧
力室２５内に、溶接部３３によってベローズ２６と、一
体化した圧力センサーの座部３０の外周に、バッキング
２９を介在させて押入する０この挿入時において、突起
部３１を、回Ｉ一部３２に嵌合し、ケース２３の開口端
面と座部３ｏの間にバッキング２９を挾持させるように
圧力センサー２８を挿入する。次に、リテーナ−３４の
穴３６に、リード線３５を入れながら、そして、突起部
３７を、座部３ｏの突起部３１と同位置で、回止部３２
に嵌合せしめ挿入する０そして、袋ナツト状の一方のケ
ース２１を螺合部２２において締め付けて行く。この締
付は時において、締付ける力は、リテーナ−３４を介し
て圧力センサー２８へ軸方向に働らくが、回正部３２に
嵌合された圧力センサー２８の座部３ｏの突起部３１と
、リテーナ−３４の突起部３７が、回転を止めているか
ら、平衡した面圧が加油ることにな９、圧力センサー２
８の変形を防止し、且、バッキング２９が、平衡に押さ
れて密着し、気密性を確実にし、圧力センサー２８にお
ける冷媒圧力の変化を正確に受圧するのである。In the above configuration, the backing 29 is inserted into the pressure chamber 25 provided in the other case 23 and pushed into the outer periphery of the seat portion 30 of the pressure sensor, which is integrated with the bellows 26 by the welded portion 33. At the time of insertion, the pressure sensor 28 is inserted so that the protrusion 31 is fitted into the rotation I part 32 and the backing 29 is sandwiched between the open end surface of the case 23 and the seat 3o. Next, while inserting the lead wire 35 into the hole 36 of the retainer 34, insert the protrusion 37 into the rotation stopper 32 at the same position as the protrusion 31 of the seat 3o.
Then, one case 21 shaped like a cap nut is tightened at the threaded portion 22. During this tightening, the tightening force is applied in the axial direction to the pressure sensor 28 through the retainer 34, but the protrusion 31 of the seat portion 3o of the pressure sensor 28 fitted in the rotating portion 32, Since the protrusion 37 of the retainer 34 stops rotating, a balanced surface pressure is applied to the pressure sensor 9.
8 is prevented from deforming, and the backing 29 is pressed in a balanced manner to ensure tight contact, ensuring airtightness and accurately sensing changes in refrigerant pressure at the pressure sensor 28.
発明の効果
このように本発明は、一対のケース内に設けられた圧力
室と、この圧力室内に配設したベローズと、とのベロー
ズと一体化し、同ベローズ内に、受圧部を設け、且、前
記一対のケース間に挾持させる外周部を設けた圧力セン
サーと、この圧力センサーを支持し、且、同圧力センサ
ーと一方のケース間に外周を介在すると共に、外周に突
起部を設けたりテーナーと、前記圧力センサーの外周部
と他方のケース間に介在したバッキングとを備え、前記
他方のケースには、リテーナ−の突起部を嵌合して軸方
向へ案内し、且、回止めとなる位置決め用の回正部を設
けたものであるから、前記リテーナ−の突起部が、前記
回正部に嵌合挿入し、前記一方のケースを締付けた時、
軸方向への血圧のみをかけるので他方のケースを締付け
て行っても、圧力センサー、及び、リテーナ−がともに
回転することはなく、圧力センサーの変形を防止するこ
とが出来、構成が簡易であるから安価に製造出来る。又
、バッキングが、平衡に押されることにより密着度が高
く、気密性を確実にできる。Effects of the Invention As described above, the present invention integrates a pressure chamber provided in a pair of cases and a bellows disposed within the pressure chamber, and provides a pressure receiving portion within the bellows. , a pressure sensor having an outer periphery sandwiched between the pair of cases; a pressure sensor supporting the pressure sensor; and an outer periphery interposed between the pressure sensor and one case; and a backing interposed between the outer periphery of the pressure sensor and the other case, the projection of the retainer being fitted into the other case to guide it in the axial direction and to prevent rotation. Since the retainer is provided with a rotating part for positioning, when the protruding part of the retainer is fitted and inserted into the rotating part and the one case is tightened,
Since only the blood pressure is applied in the axial direction, even if the other case is tightened, the pressure sensor and retainer will not rotate together, preventing the pressure sensor from deforming, and the configuration is simple. It can be manufactured cheaply from In addition, the backing is pressed evenly, resulting in high adhesion and airtightness.
第１図は本発明に係る圧力センサー装置を使用したヒー
トポンプ式空気調和機における冷凍ザイクル図、第２図
は本発明による圧力センサー本体の断面図、第３図は同
圧力センサー本体の分解斜視図である。
２ｏ・・・・・一対のケース、２６・・・・・・圧力室
、２６・・・・ベローズ、２７・・・・・・受圧部、２
８・・・・・・圧力センサー、２９・・・・・バッキン
グ、３１・・・・・・突起部、３２・・・・・・回正部
、３４・・・・・・リテーナ−８代理人の氏名 弁理士
中 尾 敏 男 ほか１名第１図
第２図Fig. 1 is a refrigeration cycle diagram of a heat pump air conditioner using the pressure sensor device according to the present invention, Fig. 2 is a sectional view of the pressure sensor main body according to the present invention, and Fig. 3 is an exploded perspective view of the pressure sensor main body. It is. 2o...Pair of cases, 26...Pressure chamber, 26...Bellows, 27...Pressure receiving part, 2
8...Pressure sensor, 29...Backing, 31...Protrusion, 32...Returning part, 34...Retainer-8 substitute Person's name: Patent attorney Toshio Nakao and one other person Figure 1 Figure 2
Claims (1)
スの圧力室内に配設したベローズと、とのベローズと一
体に結合し、同ベローズ内に受圧部を位置させ、かつ、
前記一対ケース間に、外周部を挾持させる圧力センサー
と、この圧力センサーを支持し、かつ、同圧力センサー
と一方のケース間に外周を介在したりテーナーと、前記
圧力センサーの外周部と、他方のケース間に介在したバ
ッキングとを備え、前記他方のケースは、リテーナ−を
軸方向へ案内し、かつ回正する位置決め用の回正部を形
成した圧力センサー装置。A pair of cases having pressure chambers and screwed together, and a bellows disposed in the pressure chamber of the case are integrally combined with the bellows, and a pressure receiving part is located within the bellows, and
a pressure sensor whose outer periphery is held between the pair of cases; a retainer which supports the pressure sensor and whose outer periphery is interposed between the pressure sensor and one case; the outer periphery of the pressure sensor; and a backing interposed between the two cases, the other case forming a rotation part for positioning that guides and rotates the retainer in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19853883A JPS6089725A (en) | 1983-10-24 | 1983-10-24 | Pressure sensor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19853883A JPS6089725A (en) | 1983-10-24 | 1983-10-24 | Pressure sensor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6089725A true JPS6089725A (en) | 1985-05-20 |
Family
ID=16392816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19853883A Pending JPS6089725A (en) | 1983-10-24 | 1983-10-24 | Pressure sensor device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6089725A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825710A (en) * | 1987-10-02 | 1989-05-02 | Allen-Bradley Company, Inc. | Enclosure for electrical sensor |
| US4899586A (en) * | 1987-10-02 | 1990-02-13 | Allen-Bradley Company, Inc. | Enclosure for electrical sensor |
| JPH0485245U (en) * | 1990-11-30 | 1992-07-24 |
-
1983
- 1983-10-24 JP JP19853883A patent/JPS6089725A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825710A (en) * | 1987-10-02 | 1989-05-02 | Allen-Bradley Company, Inc. | Enclosure for electrical sensor |
| US4899586A (en) * | 1987-10-02 | 1990-02-13 | Allen-Bradley Company, Inc. | Enclosure for electrical sensor |
| JPH0485245U (en) * | 1990-11-30 | 1992-07-24 |
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