JPS6226447A - Air-conditioning machine - Google Patents
Air-conditioning machineInfo
- Publication number
- JPS6226447A JPS6226447A JP60163599A JP16359985A JPS6226447A JP S6226447 A JPS6226447 A JP S6226447A JP 60163599 A JP60163599 A JP 60163599A JP 16359985 A JP16359985 A JP 16359985A JP S6226447 A JPS6226447 A JP S6226447A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- outdoor fan
- radiator
- predetermined temperature
- frequency
- 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は周波数変換装置を搭載した空気調和機に間する
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air conditioner equipped with a frequency conversion device.
従来の技術
従来、この種の空気調和機は、室外ファンの風量を利用
して周波数変換装置の放熱器の冷却が行われている。BACKGROUND ART Conventionally, in this type of air conditioner, a radiator of a frequency converter is cooled by using the air volume of an outdoor fan.
発明が解決しようとする問題点
このような従来の構成では、除霜運転中などの室外ファ
ン停止時には放熱器の冷却が行なわれていないため、周
波数変換装置の変換素子に熱が加わって破壊する問題が
ある。Problems to be Solved by the Invention In such a conventional configuration, the radiator is not cooled when the outdoor fan is stopped, such as during defrosting operation, so the conversion element of the frequency conversion device is heated and destroyed. There's a problem.
本発明は除霜運転中などにおける室外ファン停止時に周
波数変換装置の放熱器の冷部不足による変換素子の破壊
を防ぐことが出来る空気調和機を提供することを目的と
する。SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner that can prevent a conversion element from being destroyed due to insufficient cooling of a radiator of a frequency conversion device when an outdoor fan is stopped during defrosting operation or the like.
問題点を解決するための手段
本発明の空気調和機は、冷凍サイクルを構成する圧縮機
、室外コイル、減圧器および室内コイルと室内機に設け
られ室内空気を循環させる室内フアンと、室外機に設け
られた市外ファンと、周波数を変えることにより前記圧
縮機の回転数を変える周波数変換装置と、前記周波数変
換装置を前配室外ファンの風量を利用して冷却する放熱
器と、前記冷凍サイクルの運転を制御するとともに前記
周波数変換装置に周波数信号を与える制御装置とを設け
ると共に、前記放熱器の温疾を検出する温度センサを設
け、かつ前記制御装置を、温度センサの検出温度が第１
所定温度より高い時は、前記室外ファンを強制運転し、
第２所定温度より高い時には前記周波数変換装置に運転
停止の信号を与えるよう構成したことを特徴とする。Means for Solving the Problems The air conditioner of the present invention comprises a compressor, an outdoor coil, a pressure reducer, and an indoor coil that constitute a refrigeration cycle, an indoor fan that is installed in the indoor unit to circulate indoor air, and an indoor fan that is installed in the outdoor unit. an outdoor fan provided, a frequency conversion device that changes the rotation speed of the compressor by changing the frequency, a radiator that cools the frequency conversion device using the air volume of a front outdoor fan, and the refrigeration cycle. a control device that controls the operation of the frequency converter and provides a frequency signal to the frequency converter; a temperature sensor that detects a temperature change in the radiator;
When the temperature is higher than a predetermined temperature, the outdoor fan is forcedly operated;
The present invention is characterized in that it is configured to give a signal to the frequency converter to stop operation when the temperature is higher than a second predetermined temperature.
作用
このように構成したため、周波数変換装置の放熱器に付
設された温度センサの検出温度が第１所定温度より高い
時は、強制的に室外ファンが運転され、従来のように除
霜運転中などに変換素子の温度が上背して破壊されると
いう事態を回避できる。また、室外ファンの故障などで
第１所定温度よりも高い第２所定温度より高くなった時
には、周波数変換装置を運転停止させるため、変換素子
を破壊から確実に保護することが出来る。Function: With this configuration, when the temperature detected by the temperature sensor attached to the radiator of the frequency converter is higher than the first predetermined temperature, the outdoor fan is forcibly operated, and unlike the conventional system, the outdoor fan is operated during defrosting operation, etc. It is possible to avoid a situation where the temperature of the conversion element rises and is destroyed. Further, when the temperature becomes higher than the second predetermined temperature, which is higher than the first predetermined temperature, due to a failure of the outdoor fan, etc., the frequency conversion device is stopped, so that the conversion element can be reliably protected from destruction.
尚、除霜運転中等の室外ファン停止時に検出温度が第所
定訂温度より高くなり、室外ファンを強制的に運転して
も、検出温度が第１所定温度以下になれば、室外ファン
を再び停止させるため、市外ファンの強％ｌ運転時間は
短時間であり、システム上、問題はない。In addition, when the outdoor fan is stopped during defrosting operation, etc., the detected temperature becomes higher than the first predetermined temperature, and even if the outdoor fan is forced to operate, if the detected temperature falls below the first predetermined temperature, the outdoor fan will be stopped again. Therefore, the high-speed operation time of the out-of-town fans is short, and there is no problem in terms of the system.
実施例 以下、本発明の一実施例を図面に基づいて説明する。Example Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明の空気調和機の冷凍システム図を示す。FIG. 1 shows a diagram of the refrigeration system of the air conditioner of the present invention.
１は室内側ユニット、２は室外側ユニット、３は圧Ｉｉ
！機、４は四方弁、５は市外コイル、６は減圧器、７は
室内コイル、８は圧力スイッチ、９は室内ファンで、被
空調空間の空気を循環させて上記室内コイル７で熱交換
させる。１０は市外ファンで、外気と上記室外コイル５
と熱交換させる。1 is the indoor unit, 2 is the outdoor unit, 3 is the pressure Ii
! 4 is a four-way valve, 5 is a local coil, 6 is a pressure reducer, 7 is an indoor coil, 8 is a pressure switch, and 9 is an indoor fan, which circulates the air in the air-conditioned space and exchanges heat with the indoor coil 7. let 10 is an outdoor fan, which connects outside air and the above outdoor coil 5.
exchange heat with.
上記圧力スイッチ８は、暖房過負荷時に圧力が２４にり
／ｄを越えると作動して、市外ファン１０を停止し圧力
を低下させる。圧力が２４ｋ（１／ ｍ以下になれば圧
力スイッチ８は復帰して室外）？ン１０を運転させる。The pressure switch 8 is activated when the pressure exceeds 24/d during heating overload to stop the outdoor fan 10 and lower the pressure. Is the pressure 24k (if the pressure is below 1/m, the pressure switch 8 will return to the outside)? Run engine 10.
第２図は第１図の電気系統図を示す。１１は電源１２は
周波数変換装置で、主として交流／直流変換部１３と直
流／交流変換部１４により構成され、出力周波数を２５
Ｈ２から７５Ｈｚまで連続的にかえることができ、これ
により圧縮機モータ１５を１ 、５００〜４．５００ｒ
、ｐ、ｎの範囲で可変にできる。１６は周波数変換装置
１２に周波数信号を出力する制御装置、１７はリモコン
発振器で、運転／停止、冷房・暖房・送風などの運転モ
ード、室内ファン９の風量１設定温度などを選択し制御
ｌ装置１６に出力する。前記圧力スイッチ８の出力も制
御ｉｌｌ装置１６に入力されている。１８は周波数変換
装置１２の変換素子が取付けられた放熱器の湿度を検出
する温度センサで、検出信号は第一比較器１９と第二比
較器２０に入力される。温度センサ１８の検出湿度は、
第一比較器１って第１所定温度の設定手段２１と比較さ
れて、検出温度が第１所定温度よりも高い時に出力が゛
′トビレベルに反転する。また、温度センサ１８の検出
温度は、第二比較器２０で第２所定温度の設定手段２２
と比較されて、検出温度が第２所定温度より高い時に出
力が゛Ｈ″レベルに反転する。第１、第２比較２３１９
．２０の出力はそれぞれＬｌｌ ｍ装置１６に入力され
ている。FIG. 2 shows the electrical system diagram of FIG. Reference numeral 11 denotes a power supply 12, which is a frequency converter, which is mainly composed of an AC/DC converter 13 and a DC/AC converter 14, and converts the output frequency to 25
The frequency can be changed continuously from H2 to 75Hz, which allows the compressor motor 15 to
, p, and n. 16 is a control device that outputs a frequency signal to the frequency conversion device 12, and 17 is a remote control oscillator that selects operation modes such as start/stop, cooling, heating, and ventilation, air volume 1 set temperature of the indoor fan 9, etc., and controls the device. 16. The output of the pressure switch 8 is also input to the control ill device 16. Reference numeral 18 denotes a temperature sensor that detects the humidity of a radiator to which a conversion element of the frequency conversion device 12 is attached, and a detection signal is input to a first comparator 19 and a second comparator 20. The humidity detected by the temperature sensor 18 is
The first comparator 1 is compared with the first predetermined temperature setting means 21, and when the detected temperature is higher than the first predetermined temperature, the output is inverted to the "tobi" level. Further, the temperature detected by the temperature sensor 18 is determined by a second comparator 20 using a second predetermined temperature setting means 22.
When the detected temperature is higher than the second predetermined temperature, the output is reversed to the "H" level. First and second comparison 2319
．． The outputs of 20 are each input to Lll m device 16.
なお、第２所定温度は第１の所定Ｗ ｒｌより高く設定
されており、具体的には、第１所定温度は、変換素子の
１１１奨動作温度の上限を目安に８０℃位に設定され、
第２所定温度は変換素子の最大定格温度を目安に１００
℃位に設定される。Note that the second predetermined temperature is set higher than the first predetermined W rl, and specifically, the first predetermined temperature is set to about 80° C. with the upper limit of the 111 recommended operating temperature of the conversion element as a guide,
The second predetermined temperature is 100% based on the maximum rated temperature of the conversion element.
It is set at around ℃.
制御装置１Ｇは、周波数信号の他に室内ファン９、室外
ファン１０、四方弁４等の運転および開閉を制御してい
る。The control device 1G controls the operation and opening/closing of the indoor fan 9, the outdoor fan 10, the four-way valve 4, etc. in addition to the frequency signal.
第３図は市外ユニットの斜視図を示す。１２は周波数変
換装置、２３は放熱器、１８は温度センサである。放熱
器２３は室外ファン１０を運転すれば、空気が機械室＜
Ａ）から熱交換室（Ｂ）へ、放熱器２３の下の空気穴（
Ｃ）を通って流れることにより冷却される。すなわち、
放熱器２３は室外ファン１０を運転することにより発生
する空気の流れにより冷却されている。２４は放熱器２
３に取付けられた周波数変換装置の変換素子である。FIG. 3 shows a perspective view of the out-of-town unit. 12 is a frequency converter, 23 is a radiator, and 18 is a temperature sensor. When the radiator 23 operates the outdoor fan 10, the air flows into the machine room.
A) to the heat exchange chamber (B) through the air hole under the radiator 23 (
C) is cooled by flowing through it. That is,
The radiator 23 is cooled by air flow generated by operating the outdoor fan 10. 24 is radiator 2
This is the conversion element of the frequency conversion device attached to 3.
次に、制Ｗ装置ｆｉ＋６の構成を示す第４図のフローチ
ャート図に基づいて動作を説明する。尚、運転モードは
暖房運転である。Next, the operation will be explained based on the flowchart of FIG. 4 showing the configuration of the W control device fi+6. Note that the operation mode is heating operation.
運転開始により、周波数信号を出力し圧縮機を運転させ
、室内ファン９と室外ファン１０をＯＮＬ、四方弁をＯ
Ｎにする（ａ−１）この状態で暖房か除霜運転かを判断
（ａ−２）Ｌ、除霜運転であれば室内ファン９と室外フ
ァン１０を０ＦＦＬ、て四方弁をＯＦＦにする（ａ−３
）。＋！！房運転であれば圧力スイッチ８の状態を判断
（ａ−４）してＯＮであれば室外ファン１０を停止させ
る（ａ−５）。When the operation starts, a frequency signal is output to operate the compressor, the indoor fan 9 and the outdoor fan 10 are turned on, and the four-way valve is turned on.
Set to N (a-1) In this state, determine whether heating or defrosting operation is to be performed (a-2) L, if defrosting operation, set indoor fan 9 and outdoor fan 10 to 0FFL and turn off the four-way valve ( a-3
). +! ! If the outdoor fan 10 is in indoor operation, the state of the pressure switch 8 is determined (a-4), and if it is ON, the outdoor fan 10 is stopped (a-5).
次に放熱器２３に付設した温度センサ１８の検出温度が
第１所定瀾度以上かどうかを判１！Ｆｉ（ａ−６）Ｌ、
以下であれば（ａ−２）に戻り、以上であれば次に第２
所定温度以上かどうかを判断（ａ−７）Ｌ、以下であれ
ば室外ファン１０をＯＮ （ａ−８）して（ａ−６）に
戻る。検出温度が第２所定温度以上であれば、空調機の
運転を全停止（ａ−９）する。Next, it is determined whether the temperature detected by the temperature sensor 18 attached to the radiator 23 is equal to or higher than the first predetermined temperature. Fi(a-6)L,
If it is below, go back to (a-2), if it is above, then go to the second
It is determined whether the temperature is above a predetermined temperature (a-7) L, and if it is below, the outdoor fan 10 is turned on (a-8) and the process returns to (a-6). If the detected temperature is equal to or higher than the second predetermined temperature, the operation of the air conditioner is completely stopped (a-9).
従って、室外ファン１０停止中に放熱器２３の温度が上
昇しても、放熱器２３の温度が第１所定温度以上になれ
ば、室外ファン１０を強制的に運転させるため、放熱器
２３は冷却されて変換素子２４の温度上昇が防止される
。また、室外ファン１０の故障等でそれでもなお放熱器
２３の温度が上昇して第２所定温度以上になれば、全停
止とするため、変換素子２４が破壊するのを未然に防ぐ
ことができる。Therefore, even if the temperature of the radiator 23 rises while the outdoor fan 10 is stopped, if the temperature of the radiator 23 exceeds the first predetermined temperature, the outdoor fan 10 is forced to operate, so the radiator 23 cools down. This prevents the temperature of the conversion element 24 from rising. Further, if the temperature of the radiator 23 still rises to a second predetermined temperature or higher due to a malfunction of the outdoor fan 10 or the like, the converter element 24 is completely stopped, thereby preventing the converting element 24 from being destroyed.
発明の詳細
な説明のように本発明の空気講和機は、周波数変換素子
が取付けられた放熱器の温度が第１所定温度より高い時
は、室外ファンを強１ｌｌｊ的に運転させ、第１所定１
度より高く設定された第２所定温度より高い時は、周波
数変換装置に運転停止の信号を与える様に構成したもの
であるから、室外ファン故障あるいは除霜運転中等で室
外ファン停止時に、周波数変換装置の放熱器の冷部不足
による変換素子の破壊を防ぐことができる。As described in the detailed description of the invention, when the temperature of the radiator to which the frequency conversion element is attached is higher than the first predetermined temperature, the air peace machine of the present invention operates the outdoor fan at a high speed, 1
When the temperature is higher than the second predetermined temperature, which is higher than the second predetermined temperature, the frequency converter is configured to give a signal to stop operation. It is possible to prevent the conversion element from being destroyed due to insufficient cold part of the radiator of the device.
第１図は本発明の空気調和□の一実施例の冷凍サイクル
図、第２図は同空気調和機の電気系統図、第３図は同空
気調和機の室外ユニットの斜視図、第４図は第２図にお
ける制御装置のフローチャート図である。
３・・・圧縮機、５・・・室外コイル、６・・・減圧器
、７・・・室内コイル、９・・・室内ファン、１０・・
・室外ファン、１２・・・周波数変換装置、１６・・・
制ｔＩＩ装置、１８・・・温度センサ、２１・・・第１
所定温度の設定手段、２２・・・第２所定潟度設定手段
、２３・・・放熱器、２４・・・周波数変換素子
代理人 森 本 義 弘
第１図Fig. 1 is a refrigeration cycle diagram of an embodiment of the air conditioner □ of the present invention, Fig. 2 is an electrical system diagram of the air conditioner, Fig. 3 is a perspective view of the outdoor unit of the air conditioner, and Fig. 4 3 is a flowchart diagram of the control device in FIG. 2; FIG. 3... Compressor, 5... Outdoor coil, 6... Pressure reducer, 7... Indoor coil, 9... Indoor fan, 10...
・Outdoor fan, 12...Frequency converter, 16...
control tII device, 18...temperature sensor, 21...first
Predetermined temperature setting means, 22... Second predetermined lagoonality setting means, 23... Heat sink, 24... Frequency conversion element representative Yoshihiro Morimoto Figure 1
Claims (1)
器および室内コイルと、室内機に設けられ室内空気を循
環させる室内ファンと、室外機に設けられた室外ファン
と、周波数を変えることにより前記圧縮機の回転数を変
える周波数変換装置と、前記周波数変換装置を前記室外
ファンの風量を利用して冷却する放熱器と、前記冷凍サ
イクルの運転を制御するとともに前記周波数変換装置に
周波数信号を与える制御装置とを設けると共に、前記放
熱器の温度を検出する温度センサを設け、かつ前記制御
装置を、前記温度センサの検出温度が第１所定温度より
高い時は、前記室外ファンを強制運転し、第２所定温度
より高い時には前記周波数変換装置に運転停止の信号を
与えるように構成した空気調和機。1. By changing the frequency of the compressor, outdoor coil, pressure reducer, and indoor coil that make up the refrigeration cycle, the indoor fan installed in the indoor unit that circulates indoor air, and the outdoor fan installed in the outdoor unit, a frequency converter that changes the rotation speed of a compressor; a radiator that cools the frequency converter using air volume of the outdoor fan; and a radiator that controls the operation of the refrigeration cycle and provides a frequency signal to the frequency converter. a control device, and a temperature sensor for detecting the temperature of the radiator, and the control device forcibly operates the outdoor fan when the temperature detected by the temperature sensor is higher than a first predetermined temperature; An air conditioner configured to give a signal to the frequency converter to stop operation when the temperature is higher than a second predetermined temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60163599A JPS6226447A (en) | 1985-07-24 | 1985-07-24 | Air-conditioning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60163599A JPS6226447A (en) | 1985-07-24 | 1985-07-24 | Air-conditioning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6226447A true JPS6226447A (en) | 1987-02-04 |
Family
ID=15776983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60163599A Pending JPS6226447A (en) | 1985-07-24 | 1985-07-24 | Air-conditioning machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6226447A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5731836A (en) * | 1980-08-05 | 1982-02-20 | Olympus Optical Co | Electric connector of endoscope |
| JPH01277161A (en) * | 1988-04-28 | 1989-11-07 | Toshiba Corp | Airconditioner |
| JPH0270135U (en) * | 1988-11-18 | 1990-05-28 |
-
1985
- 1985-07-24 JP JP60163599A patent/JPS6226447A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5731836A (en) * | 1980-08-05 | 1982-02-20 | Olympus Optical Co | Electric connector of endoscope |
| JPH01277161A (en) * | 1988-04-28 | 1989-11-07 | Toshiba Corp | Airconditioner |
| JPH0270135U (en) * | 1988-11-18 | 1990-05-28 |
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