JPH08261160A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH08261160A JPH08261160A JP6735895A JP6735895A JPH08261160A JP H08261160 A JPH08261160 A JP H08261160A JP 6735895 A JP6735895 A JP 6735895A JP 6735895 A JP6735895 A JP 6735895A JP H08261160 A JPH08261160 A JP H08261160A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- heater
- thermal relay
- pressure switch
- current circuit
- 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
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、過電流検出器と圧力ス
イッチと熱動継電器を具備する密閉型電動圧縮機の過負
荷保護装置を有する空気調和機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having an overload protection device for a hermetic electric compressor equipped with an overcurrent detector, a pressure switch and a thermal relay.
【０００２】[0002]
【従来の技術】特開平３−１５１５８４号公報に記載さ
れた従来の密閉型電動圧縮機の過負荷保護装置では、図
３に示すように、過電流保護装置１と熱動継電器２を、
電動圧縮機３に並列に接続することで、電動圧縮機３に
過電流が発生した場合にも、また電動圧縮機３の密閉容
器に過熱状態が発生した場合にも電源電圧を遮断できる
ように構成している。2. Description of the Related Art In a conventional hermetic electric compressor overload protection device disclosed in Japanese Patent Laid-Open No. 3-151584, an overcurrent protection device 1 and a thermal relay 2 are provided as shown in FIG.
By connecting the electric compressor 3 in parallel, the power supply voltage can be cut off even when an overcurrent occurs in the electric compressor 3 or when an overheated state occurs in the closed container of the electric compressor 3. I am configuring.
【０００３】[0003]
【発明が解決しようとする課題】しかしこの種従来の密
閉型電動圧縮機の過負荷保護装置では、吐出口パイプの
圧力に保護装置が無く、吐出口の圧力が異常に上がった
場合の考慮がされていなかった。However, in the conventional overload protection device for the hermetic electric compressor of this kind, there is no protection device for the pressure of the discharge port pipe, and consideration should be given to the case where the pressure of the discharge port rises abnormally. Was not done.
【０００４】本発明の目的は、密閉型電動圧縮機の過負
荷保護装置として温度と過電流保護の他に、圧力に対し
ても、保護しうる空気調和機を提供することにある。An object of the present invention is to provide an air conditioner capable of protecting not only temperature and overcurrent but also pressure as an overload protection device for a hermetic electric compressor.
【０００５】[0005]
【課題を解決するための手段】本発明は、密閉型電動圧
縮機の過電流検出器の常閉型バイメタルスイッチを接続
すると共に、前記密閉型電動圧縮機の密閉容器或いは吐
出パイプに常開型の圧力スイッチと常開型の熱動継電器
を並列に取り付けてなるものにおいて、前記過電流検出
器に、前記常閉型バイメタルスイッチの加熱用ヒータを
設けこのヒータに前記圧力スイッチと前記熱動継電器を
直列接続することで小電流回路を形成し、この小電流回
路を前記常閉型バイメタルスイッチおよび前記密閉型電
動圧縮機等によりなる大電流回路に対して、並列な状態
で電源を接続したものである。According to the present invention, a normally closed bimetal switch of an overcurrent detector of a hermetic electric compressor is connected and a normally open type is provided in a hermetic container or a discharge pipe of the hermetic electric compressor. In which the pressure switch and the normally open type thermal relay are installed in parallel, the overcurrent detector is provided with a heater for heating the normally closed bimetal switch, and the heater is provided with the pressure switch and the thermal relay. A small current circuit is formed by connecting in series, and this small current circuit is connected in parallel to a large current circuit composed of the normally closed bimetal switch and the hermetic electric compressor. Is.
【０００６】[0006]
【作用】本発明によれば、密閉型電動圧縮機に過電流が
発生した場合には過電流検出器の常閉型バイメタルスイ
ッチが発熱して開くことで密閉型電動圧縮機への供給は
停止される。また、密閉容器、或いは、吐出パイプに異
常な圧力状態が発生した場合にも、この過圧力状態に連
動して常開型の圧力スイッチを閉じ圧力スイッチを通し
てヒータに通電され、このヒータの発熱により常閉型バ
イメタルスイッチが発熱して開くことで密閉型電動圧縮
機への給電は停止される。また、圧力スイッチと並列接
続されている常開型の熱動継電器も密閉容器或いは、吐
出パイプに過熱状態が発生した場合にも、この過熱状態
に連動して常開型の熱動継電器を閉じ、熱動継電器を通
してヒータに通電され、ヒータの発熱により常閉型バイ
メタルスイッチが発熱して開くことでも密閉型電動圧縮
機への給電も停止される。この小電流回路を構成するこ
とにより、過圧力も検出でき、さらに安全性が高まるよ
うになる。According to the present invention, when an overcurrent occurs in the hermetic electric compressor, the normally closed bimetal switch of the overcurrent detector generates heat and opens, so that the supply to the hermetic electric compressor is stopped. To be done. Also, when an abnormal pressure state occurs in the closed container or the discharge pipe, the normally open type pressure switch is closed and the heater is energized through the pressure switch in association with this overpressure state, and the heater generates heat. When the normally closed bimetal switch generates heat and opens, power supply to the hermetic electric compressor is stopped. In addition, the normally open type thermal relay connected in parallel with the pressure switch also closes the normally open type thermal relay if the overheated state occurs in the closed container or the discharge pipe. The heater is energized through the thermal relay, and the heat generated by the heater causes the normally closed bimetal switch to generate heat and open, so that power supply to the hermetic electric compressor is also stopped. By constructing this small current circuit, overpressure can be detected and safety can be further enhanced.
【０００７】[0007]
【実施例】本発明の一実施例について説明する。EXAMPLE An example of the present invention will be described.
【０００８】図１及び図２において、５は密閉型電動圧
縮機で、円筒状の密閉容器６の内部に、圧縮容器と電動
機７を収納している。８は電動機７の補助巻線、９は主
巻線で、運転用コンデンサ１０が直列接続されている。
電動機７は一対の大電流回路１１，１２を通して電源１
３から給電されている。In FIGS. 1 and 2, reference numeral 5 is a hermetic electric compressor, and a compression container and an electric motor 7 are housed inside a cylindrical hermetic container 6. Reference numeral 8 is an auxiliary winding of the electric motor 7, 9 is a main winding, and an operating capacitor 10 is connected in series.
The electric motor 7 is connected to the power source 1 through a pair of large current circuits 11 and 12.
Power is supplied from 3.
【０００９】１４は過負荷保護装置で、過電流検出器１
５と圧力スイッチ３０、熱動継電器１６等から構成され
ている。過電流検出器１５はその常閉型バイメタルスイ
ッチ１７を一方の大電流回路１１に介設している。圧力
スイッチ３０は常開放型のスイッチ部３１を有し、スイ
ッチ部３１が過圧力の検出時に閉じるよう構成されてい
る。これと並列に熱動継電器１６が設置され常開放型の
スイッチ部１８を有し、スイッチ部１８が過熱温度の検
出時に閉じるよう構成されている。圧力スイッチ３０は
密閉容器６の吐出口に取り付け密閉容器６の冷媒の過圧
力を検出する。また同時に熱動継電器１６は、密閉容器
６の上端面に取り付けられた金具に取り付ける事により
冷媒の過熱状態を検出する。Reference numeral 14 is an overload protection device, which is an overcurrent detector 1
5, a pressure switch 30, a thermal relay 16 and the like. The overcurrent detector 15 has the normally closed type bimetal switch 17 in one large current circuit 11. The pressure switch 30 has a normally open type switch unit 31, and the switch unit 31 is configured to close when overpressure is detected. The thermal relay 16 is installed in parallel with this and has a normally open type switch unit 18, and the switch unit 18 is configured to close when the overheat temperature is detected. The pressure switch 30 is attached to the discharge port of the closed container 6 and detects the overpressure of the refrigerant in the closed container 6. At the same time, the thermal relay 16 is attached to the metal fitting attached to the upper end surface of the closed container 6 to detect the overheated state of the refrigerant.
【００１０】そして過負荷保護装置１４は過電流検出器
１５に常閉型バイメタルスイッチ１７の加熱用ヒータ２
１を設け、ヒータ２１に圧力スイッチ３０、熱動継電器
１６を直列接続することで小電流回路２２を形成し、小
電流回路２２を常閉型バイメタルスイッチ１７および電
動機７等によりなる大電流回路１１，１２に対して並列
な状態で電源１３に接続してある。The overload protection device 14 includes an overcurrent detector 15 and a heater 2 for heating a normally closed bimetal switch 17.
1, a pressure switch 30 and a thermal relay 16 are connected in series to the heater 21 to form a small current circuit 22. The small current circuit 22 is composed of a normally closed bimetal switch 17 and an electric motor 7 and the like. , 12 in parallel with the power source 13.
【００１１】過負荷保護装置では、過電流が発生すると
過電流検出機１５の常閉型バイメタルスイッチ１７が発
熱し、密閉型電動圧縮機５への給電を遮断するようにな
る。また、密閉容器６に吐出口パイプに過圧力が発生し
た場合にも過圧力状態に連動して常開型の圧力スイッチ
３０が閉じ圧力スイッチ３０を介してヒータ２１に通電
されヒータ２１の発熱により常閉型バイメタルスイッチ
１７が発熱して開き、密閉型電動圧縮機５への給電を遮
断するようになる。またこれとは別に密閉容器６の上面
部が過熱状態に成った場合でも、過熱状態に連動し常開
型の熱動継電器１６が閉じ、熱動継電器１６を通してヒ
ータ２１に通電されヒータ２１の発熱により常閉型バイ
メタルスイッチ１７が発熱して開き、密閉型電動圧縮機
５への給電を遮断するようになる。In the overload protection device, when an overcurrent is generated, the normally closed bimetal switch 17 of the overcurrent detector 15 generates heat, and the power supply to the hermetic electric compressor 5 is cut off. Also, when overpressure is generated in the outlet pipe of the closed container 6, the normally open type pressure switch 30 is closed in conjunction with the overpressure state, the heater 21 is energized via the pressure switch 30, and the heat generated by the heater 21 is generated. The normally-closed bimetal switch 17 generates heat and opens, and the power supply to the hermetic electric compressor 5 is cut off. Also, separately from this, even when the upper surface of the closed container 6 is overheated, the normally open thermal relay 16 is closed in association with the overheated state, and the heater 21 is energized through the thermal relay 16 to generate heat from the heater 21. As a result, the normally closed bimetal switch 17 generates heat and opens, and the power supply to the hermetic electric compressor 5 is cut off.
【００１２】[0012]
【発明の効果】本発明は、小電流回路に熱動継電器と並
列に圧力スイッチを取り付けることにより、吐出口の過
圧力を検知できる。According to the present invention, an overpressure at the discharge port can be detected by installing a pressure switch in parallel with a thermal relay in a small current circuit.
【図１】本発明の一実施例の電気回路図。FIG. 1 is an electric circuit diagram of an embodiment of the present invention.
【図２】圧力スイッチ、熱動継電器取り付け状態の説明
図。FIG. 2 is an explanatory diagram of a state where a pressure switch and a thermal relay are attached.
【図３】従来の電気回路図。FIG. 3 is a conventional electric circuit diagram.
【符号の説明】 ５…密閉型電動圧縮機、 ６…密閉容器、 １１，１２…大電流回路、 １３…電源、 １５…過電流検出器、 １６…熱動継電器、 １７…バイメタルスイッチ、 ２１…ヒータ、 ２２…小電流回路、 ３０…圧力スイッチ、 ３２…吐出パイプ。[Explanation of Codes] 5 ... Hermetically-type electric compressor, 6 ... Hermetic container, 11, 12 ... Large current circuit, 13 ... Power supply, 15 ... Overcurrent detector, 16 ... Thermal relay, 17 ... Bimetal switch, 21 ... Heater, 22 ... Small current circuit, 30 ... Pressure switch, 32 ... Discharge pipe.
Claims (1)
る空気調和機において、過電流検出器の常閉型バイメタ
ルスイッチを接続し、前記密閉型電動圧縮機の密閉容器
或いは吐出パイプに常開型の圧力スイッチを取付け、前
記圧力スイッチと並列に常開型の熱動継電器を取付け、
前記常閉型バイメタルスイッチに加熱ヒータを設け、前
記加熱ヒータに前記圧力スイッチおよび前記熱動継電器
を直列接続した、ことを特徴とする空気調和機。1. An air conditioner having an overload protection device in a hermetic electric compressor, wherein a normally closed bimetal switch of an overcurrent detector is connected to a hermetically sealed electric compressor to a hermetically sealed container or a discharge pipe. Attach an open type pressure switch, and attach a normally open type thermal relay in parallel with the pressure switch.
An air conditioner, wherein a heater is provided in the normally closed bimetal switch, and the pressure switch and the thermal relay are connected in series to the heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6735895A JPH08261160A (en) | 1995-03-27 | 1995-03-27 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6735895A JPH08261160A (en) | 1995-03-27 | 1995-03-27 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08261160A true JPH08261160A (en) | 1996-10-08 |
Family
ID=13342719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6735895A Pending JPH08261160A (en) | 1995-03-27 | 1995-03-27 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08261160A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002195162A (en) * | 2000-12-27 | 2002-07-10 | Yamaha Livingtec Corp | Jet bath safety device |
| JP2004332593A (en) * | 2003-05-06 | 2004-11-25 | Ubukata Industries Co Ltd | Protective device for electric compressor equipment |
| WO2009016779A1 (en) * | 2007-07-31 | 2009-02-05 | Ubukata Industries Co., Ltd. | Sealed electric compressor |
| CN102353228A (en) * | 2011-08-31 | 2012-02-15 | 合肥美的荣事达电冰箱有限公司 | Refrigerating system and refrigeration equipment with same |
| CN104343669A (en) * | 2013-07-25 | 2015-02-11 | 珠海格力电器股份有限公司 | Compressor overload protection system |
| US20180306188A1 (en) * | 2017-04-19 | 2018-10-25 | Abac Aria Compressa S.P.A. | Compressor provided with an electronic pressure switch and method of regulating the pressure within such a compressor |
| JP2019032108A (en) * | 2017-08-08 | 2019-02-28 | パナソニックＩｐマネジメント株式会社 | Refrigeration cycle device |
| EP3683910A4 (en) * | 2017-09-15 | 2020-10-28 | Gree Electric Appliances (Wuhan) Co., Ltd. | Overload protection apparatus and method, and storage medium, compressor and electric appliance |
-
1995
- 1995-03-27 JP JP6735895A patent/JPH08261160A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002195162A (en) * | 2000-12-27 | 2002-07-10 | Yamaha Livingtec Corp | Jet bath safety device |
| JP2004332593A (en) * | 2003-05-06 | 2004-11-25 | Ubukata Industries Co Ltd | Protective device for electric compressor equipment |
| WO2009016779A1 (en) * | 2007-07-31 | 2009-02-05 | Ubukata Industries Co., Ltd. | Sealed electric compressor |
| EP2175135A1 (en) * | 2007-07-31 | 2010-04-14 | Ubukata Industries Co., Ltd | Sealed electric compressor |
| US8154237B2 (en) | 2007-07-31 | 2012-04-10 | Ubukata Industries, Co., Ltd | Sealed electric compressor |
| EP2175135A4 (en) * | 2007-07-31 | 2013-02-27 | Ubukata Ind Co Ltd | Sealed electric compressor |
| CN102353228A (en) * | 2011-08-31 | 2012-02-15 | 合肥美的荣事达电冰箱有限公司 | Refrigerating system and refrigeration equipment with same |
| CN104343669A (en) * | 2013-07-25 | 2015-02-11 | 珠海格力电器股份有限公司 | Compressor overload protection system |
| US20180306188A1 (en) * | 2017-04-19 | 2018-10-25 | Abac Aria Compressa S.P.A. | Compressor provided with an electronic pressure switch and method of regulating the pressure within such a compressor |
| JP2019032108A (en) * | 2017-08-08 | 2019-02-28 | パナソニックＩｐマネジメント株式会社 | Refrigeration cycle device |
| EP3683910A4 (en) * | 2017-09-15 | 2020-10-28 | Gree Electric Appliances (Wuhan) Co., Ltd. | Overload protection apparatus and method, and storage medium, compressor and electric appliance |
| US11063420B2 (en) | 2017-09-15 | 2021-07-13 | Gree Electric Appliance (Wuhan) Co., Ltd. | Overload protection device and method, storage medium, compressor and electric appliance |
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