JPS629164A - Overload protective device for air conditioner - Google Patents
Overload protective device for air conditionerInfo
- Publication number
- JPS629164A JPS629164A JP60148748A JP14874885A JPS629164A JP S629164 A JPS629164 A JP S629164A JP 60148748 A JP60148748 A JP 60148748A JP 14874885 A JP14874885 A JP 14874885A JP S629164 A JPS629164 A JP S629164A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- protection device
- cover
- temperature
- air conditioner
- 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
- Compressor (AREA)
- Air Conditioning Control Device (AREA)
- Motor Or Generator Frames (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、圧縮機の外郭に自動復帰式の過負荷保護装置
を設けた空気調和機の過負荷保護装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an overload protection device for an air conditioner, in which an automatic return type overload protection device is provided on the outer shell of a compressor.
従来の技術
従来この種の一体形空気調和機の過負荷保護装置として
は第５図〜第７図に示す如く、基板１０１の上に圧縮機
１０２、凝縮器１０３、凝縮器１０３を放熱させる為の
送風ファン１０４、蒸発器１０５、蒸発器を吸熱させる
為の送風ファン１０６を設置し、前記圧縮機１０２の外
郭に一定の温度及び電流を検知して回路を遮断するバイ
メタル１０７を有した自動復帰式の過負荷保護装置（以
下単に保護装置と呼ぶ）１０８を密着させて設置し、こ
の保護装置１０８を、一体に成形されたカバー１０９と
、圧縮機１０２によって覆っていた。2. Description of the Related Art Conventionally, as shown in FIGS. 5 to 7, an overload protection device for an integrated air conditioner of this type includes a compressor 102, a condenser 103, and a condenser 103 on a substrate 101 for dissipating heat. A blower fan 104, an evaporator 105, and a blower fan 106 for absorbing heat from the evaporator are installed, and the outer shell of the compressor 102 has a bimetal 107 that detects a certain temperature and current and interrupts the circuit. A type overload protection device (hereinafter simply referred to as a protection device) 108 was installed in close contact with each other, and this protection device 108 was covered by a cover 109 and the compressor 102 that were integrally molded.
発明が解決しようとする問題点
しかしながら上記のような構成では以下のような問題点
があった。Problems to be Solved by the Invention However, the above configuration has the following problems.
すなわち空気調和機が、定格電圧よりも相当に低い電圧
で運転された場合、圧縮機１０２が始動できない為、圧
縮機１０２及び保護装置１０８には、定格電流より数倍
大きな始動電流が流れる。That is, when the air conditioner is operated at a voltage considerably lower than the rated voltage, the compressor 102 cannot be started, so a starting current several times larger than the rated current flows through the compressor 102 and the protection device 108.
その結果、保護装置１０８は前記始動電流を検知して空
気調和機の電気回路の切断及び接続をくり返す。As a result, the protection device 108 detects the starting current and repeatedly disconnects and connects the electric circuit of the air conditioner.
又、上記の結果圧縮機１０２には、間欠的に始動電流が
流れる為、巻線の温度が一定の値迄上昇して行く。Further, as a result of the above, since the starting current flows intermittently through the compressor 102, the temperature of the winding increases to a certain value.
又、前記凝縮器１０３を放熱させる為の送風フアン１０
４は低い電圧に於いても運転される。この為、圧縮機１
０２の周辺、その他を通荷する風を凝縮器１０３に送り
込んでいる。Further, a blower fan 10 for dissipating heat from the condenser 103 is provided.
4 can also be operated at low voltages. For this reason, compressor 1
02 and other areas are fed into the condenser 103.
したがって保護装置１０８により電気回路が切断された
場合、前記の風によってカバー１０９が冷却され又、カ
バー１０９によって保護装置１０８が、圧縮機１０２の
温度よりも相当に低い温度となってしまう。Therefore, when the electrical circuit is disconnected by the protection device 108, the cover 109 is cooled by the wind, and the temperature of the protection device 108 becomes considerably lower than the temperature of the compressor 102 due to the cover 109.
保護装置１０８は、一定の温度以上では電気回路を切断
しつづけるが、前記の風によって冷却される為、圧縮機
１０２の巻線及び外郭温度が高く、通常電気回路が切断
されていなければならない時に電気回路を接続してしま
う。The protection device 108 continues to cut off the electrical circuit when the temperature exceeds a certain level, but because it is cooled by the wind, the protection device 108 continues to cut off the electrical circuit when the temperature of the windings and outer shell of the compressor 102 is high and the electrical circuit should normally be cut off. Connect the electrical circuit.
又、上述の動作が数回から数十回繰り返されると圧縮機
１０２の外郭温度及び巻線温度が高くなりすぎて、つい
には前記巻線が焼損してしまう問題があった。Furthermore, if the above-described operation is repeated several to several tens of times, the temperature of the outer shell of the compressor 102 and the temperature of the windings become too high, resulting in the windings eventually being burnt out.
又、圧縮機１０２の外郭及び巻線温度が上昇しないよう
に１通常よりも低温で動作、復帰を行なう保護装置１０
８を使用すると保護装置１０８の動作回数が増加し、短
期間で寿命がつきてしまう問題があった。Also, in order to prevent the temperature of the outer shell and windings of the compressor 102 from rising, a protection device 10 is provided which operates and returns at a lower temperature than normal.
If No. 8 is used, the number of operations of the protection device 108 increases, and there is a problem that the life of the protection device 108 ends in a short period of time.
問題点を解決するだめの手段
本発明は上記問題を解決するために、保護装置のカバー
を２重に一体成形したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a cover for a protective device that is integrally molded in two layers.
作 用
本発明は上記した構成により、空気調和機が定格電圧よ
りも相当に低い電圧下で使用された場合に於いて、保護
装置が動作し、電気回路を切断した状態に於いて、凝縮
器に送り込まれる風が前記カバー周辺を通過しても、カ
バーが２重構造になっている為、２重のカバーの内側は
冷却されにくい。According to the above-described structure, when the air conditioner is used at a voltage considerably lower than the rated voltage, the protection device is activated and the electric circuit is disconnected. Even if the air blown into the cover passes around the cover, since the cover has a double structure, the inside of the double cover is not easily cooled.
又、これによってカバーが保護装置を冷却することも少
なくなり、保護装置の温度が圧縮機の外郭の温度及び巻
線の温度に近づき、保護装置は圧縮機の外郭温度及び巻
線温度が十分に低下してから復帰動作を行ない、電気回
路の接続を行なう。This also reduces the need for the cover to cool the protector, causing the temperature of the protector to approach the temperature of the compressor shell and windings, so that the protector cools down to a level where the temperatures of the compressor shell and windings are sufficiently low. After the voltage drops, perform a recovery operation and connect the electric circuit.
この結果、圧縮機の巻線が焼損することがなく、保護装
置の寿命が短期間でつきることもない。As a result, the windings of the compressor will not burn out, and the life of the protection device will not be shortened.
実施例
以下、本発明の一実施例を第１図〜第４図にもとづいて
説明する。EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4.
同図に於いて、１は空気調和機の本体を構成する基板で
ある。In the figure, reference numeral 1 denotes a board constituting the main body of the air conditioner.
基板１はほぼ中央で仕切板２によって室内側と室外側に
仕切られている。The board 1 is partitioned approximately at the center by a partition plate 2 into an indoor side and an outdoor side.
室外側には圧縮機３と凝縮器４、及び凝縮器４に対向す
る位置に凝縮器４用の送風機としてプロペラファン５が
設けられている。室内側には蒸発器６が設けられ又、蒸
発器６と対向する位置には蒸発器６用の送風機としてシ
ロッコファン７が設けられている。On the outdoor side, a compressor 3 and a condenser 4 are provided, and a propeller fan 5 is provided as a blower for the condenser 4 at a position facing the condenser 4. An evaporator 6 is provided on the indoor side, and a sirocco fan 7 is provided as a blower for the evaporator 6 at a position facing the evaporator 6.
又、前記フロペラファン５とシロ７コフアン７は、仕切
板２の室外側：で固定された開放形ファンモーフ８の両
端に固定されている。Further, the floper fan 5 and the white fan 7 are fixed to both ends of an open fan morph 8 fixed to the outdoor side of the partition plate 2.
圧縮機３の上部外郭には、一定の温度及び電流を検知し
て回路を遮断するバイメタル９を有した自動復帰式の過
負荷保護装置（以下単に保護装置と呼ぶ）１０が設置さ
れている。この保護装置１０の周囲には、樹脂によって
成り外側カバー１１ａと内側カバー１１ｂによって２重
構造に一体成形され、外側カバー１１ａと、内側カバー
１１ｂとを細いリプ１１ｃで接続されたカバー１１が設
置されている。An automatic reset type overload protection device (hereinafter simply referred to as a protection device) 10 having a bimetal 9 that detects a certain temperature and current and interrupts the circuit is installed in the upper outer shell of the compressor 3. A cover 11 is installed around the protective device 10, which is made of resin and integrally molded into a double structure with an outer cover 11a and an inner cover 11b, and the outer cover 11a and the inner cover 11b are connected by a thin lip 11c. ing.
カバー１１は圧縮機３の上部外郭に下端を溶接されて、
上部にネジ部を設けた軸１２とナツト１３とによって圧
縮機３に固定されている。The cover 11 has a lower end welded to the upper outer shell of the compressor 3,
It is fixed to the compressor 3 by a shaft 12 and a nut 13 having a threaded portion at the top.
又、保護装置１０は、カバー１１に設けられた突起１４
と保護装置１０の下端の突起１５の間に設置された線バ
ネ１６によって固定され、圧縮機３の上部外郭に密着し
ている。The protection device 10 also includes a protrusion 14 provided on the cover 11.
The protective device 10 is fixed by a wire spring 16 installed between the protrusion 15 at the lower end of the protector 10, and is in close contact with the upper outer shell of the compressor 3.
次に本発明の一実施例に於ける一体形空気調和機を定格
電圧よりも相当に低い、電圧ｆ運転した場合についての
説明を行なう。Next, a case will be described in which the integrated air conditioner according to an embodiment of the present invention is operated at a voltage f, which is considerably lower than the rated voltage.
空気調和機が低電圧下で運転されると、圧縮機３はトル
クが不足し、始動できない。この為に圧縮機３及び保護
装置１０には定格電流より数倍大きな始動電流が流れる
。When the air conditioner is operated under low voltage, the compressor 3 lacks torque and cannot be started. For this reason, a starting current several times larger than the rated current flows through the compressor 3 and the protection device 10.
保護装置１０け前記始動電流を検知して空気調和機の電
気回路の切断及び接続をくり返す。The protection device 10 detects the starting current and repeatedly disconnects and connects the electric circuit of the air conditioner.
又、上記の結果圧縮機３には、間欠的に始動電流が流れ
る為、巻線の温度が一定の値まで上昇して行く。Further, as a result of the above, since the starting current flows intermittently through the compressor 3, the temperature of the winding increases to a certain value.
又、前記開放形ファンモータ８は低い電圧に於いても運
転が可能である。Further, the open type fan motor 8 can be operated even at low voltage.
又、前記ファンモーフ８に固定されたプロペラファン５
が回転し、圧縮機３周辺及びその他を通過する風を凝縮
器４に送っている。Further, a propeller fan 5 fixed to the fan morph 8
rotates and sends the air passing around the compressor 3 and elsewhere to the condenser 4.
この為前述の風によって前記カバー１１が冷却される。Therefore, the cover 11 is cooled by the aforementioned wind.
しかしカバー１１は外側カバー１１ａと内側カバー１１
ｂとに成っており、風によって外側カバー１１ａが冷却
されても外側カバー１１ａと内側カバーを接続するリプ
１１ｃか細く伝熱しにくい。However, the cover 11 has an outer cover 11a and an inner cover 11.
b, and even if the outer cover 11a is cooled by wind, the lip 11c connecting the outer cover 11a and the inner cover is thin and does not easily transfer heat.
又、外側カバー１１ａと内側カバー１１ｂとの間の空気
層も伝熱を防ぐ為、内側カバー１１ｂは風によって冷却
されにくい。Furthermore, since the air layer between the outer cover 11a and the inner cover 11b also prevents heat transfer, the inner cover 11b is not easily cooled by wind.
又、保護装置１ｏも内側カバー１１ｂによって冷却され
にくく、ＥＥ圧縮機の巻線温度及び外郭に近い温度とな
る。Further, the protection device 1o is also not easily cooled by the inner cover 11b, and the temperature becomes close to the winding temperature of the EE compressor and the outer shell.
したがって保護装置１０は圧縮機３の外郭温度及び、巻
線温度が十分に低下してから復帰動作を行なう。Therefore, the protection device 10 performs the return operation after the outer shell temperature of the compressor 3 and the winding temperature have sufficiently decreased.
この結果圧縮機３の巻線の温度が一定の低い温度に保た
れ、焼損することはない。As a result, the temperature of the windings of the compressor 3 is kept at a constant low temperature, and no burnout occurs.
発明の効果
以上のように保護装置を外郭が２重構造で一体に成形さ
れたカバーと圧縮機によって覆うことにより、空気調和
機が低電圧下で運転されてＥＥ圧縮機始動できず始動電
流が流れても、保護装置の温度が、周辺の風に影響され
ずに圧縮機の外郭及び、巻線の温度と近い温度となる為
、圧縮機の巻線の温度が一定の温度以下の低い温度に保
たれ巻線が焼損することがなく安全性が高く、信頼性の
高い保護制御が実現できる。Effects of the Invention As described above, by covering the protective device with the cover and the compressor, which have a double outer shell and are integrally molded, the air conditioner is operated under low voltage, the EE compressor cannot be started, and the starting current is low. Even if the flow occurs, the temperature of the protective device will be close to the temperature of the outer shell of the compressor and the windings without being affected by the surrounding wind, so the temperature of the compressor windings will be low below a certain temperature. The windings are maintained at a high temperature without burning out, ensuring high safety and highly reliable protection control.
第１図は本発明の一実施例に於ける過負荷保護装置の水
平断面図、第２図は同縦断面図、第３図は同過負荷保護
装置を具備し念空気調和機の水平断面図、第４図は同圧
縮機の正面図、第５図は従来の空気調和機の水平断面図
、第６図は同要部水平断面図、第７図は同縦断面図であ
る。
３・・・・・・圧縮機、１ｏ・・・・・・過負荷保護装
置、１１・・・・・カバー、１１ａ・・団・外側カバー
、１１ｂ・・・・・・内側カバー、１１ｃ・・・・・リ
プ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ｌθ
−−−ｉμＩＪフ（イトイ厚Ｊｌ、ｔＬ、Ｌ第 ｔ
Ｉ！ｌ
ｔｔ−−−ｎ）＼”−／ｌａ −
−一外イ貝゛」ηノ（−、／１ｂ−−一内イ員・１カバ
ー
ｌθ
嬉 ２ 図
ｌθ−一一遁負荷保護装工
第 ３ 図
ｕ−ｍ＝ ηノ（−第４図
第５図
／θ６ ／１７４Fig. 1 is a horizontal sectional view of an overload protection device according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the same, and Fig. 3 is a horizontal sectional view of an air conditioner equipped with the same overload protection device. 4 is a front view of the same compressor, FIG. 5 is a horizontal sectional view of the conventional air conditioner, FIG. 6 is a horizontal sectional view of the same main part, and FIG. 7 is a vertical sectional view of the same. 3... Compressor, 1o... Overload protection device, 11... Cover, 11a... Outer cover, 11b... Inner cover, 11c... ...Rep. Name of agent: Patent attorney Toshio Nakao and one other person lθ
---iμIJfu (Itoi thickness Jl, tL, Lth t
I! l
tt---n)\"-/la-
-One outside shell ゛'ηノ(-,/1b--One inside one member/1 cover lθ 2 Figure lθ-11 Load protection equipment Figure 3
um = η (-Fig. 4 Fig. 5/θ6 /174
Claims (1)
せて設置し、前記過負荷保護装置を、外郭が空胴を介す
る２重構造で一体に成形されたカバーと圧縮機の外郭に
よって覆った空気調和機の過負荷保護装置。An automatic return overload protection device is installed in close contact with the outer shell of the compressor, and the overload protection device is covered by a cover integrally formed with a double structure with a cavity in between and the outer shell of the compressor. Overload protection device for air conditioners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60148748A JPS629164A (en) | 1985-07-05 | 1985-07-05 | Overload protective device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60148748A JPS629164A (en) | 1985-07-05 | 1985-07-05 | Overload protective device for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS629164A true JPS629164A (en) | 1987-01-17 |
Family
ID=15459741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60148748A Pending JPS629164A (en) | 1985-07-05 | 1985-07-05 | Overload protective device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629164A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100415817B1 (en) * | 2000-12-07 | 2004-01-31 | 삼성전자주식회사 | Terminal apparatus protecting cover for electric manufactured goods and compressor assembly with protecting cover |
| JP2007315270A (en) * | 2006-05-25 | 2007-12-06 | Mitsubishi Heavy Ind Ltd | Inverter integrated type electric compressor |
-
1985
- 1985-07-05 JP JP60148748A patent/JPS629164A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100415817B1 (en) * | 2000-12-07 | 2004-01-31 | 삼성전자주식회사 | Terminal apparatus protecting cover for electric manufactured goods and compressor assembly with protecting cover |
| JP2007315270A (en) * | 2006-05-25 | 2007-12-06 | Mitsubishi Heavy Ind Ltd | Inverter integrated type electric compressor |
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