JP3087306B2 - Heating and cooling machine - Google Patents
Heating and cooling machineInfo
- Publication number
- JP3087306B2 JP3087306B2 JP02319046A JP31904690A JP3087306B2 JP 3087306 B2 JP3087306 B2 JP 3087306B2 JP 02319046 A JP02319046 A JP 02319046A JP 31904690 A JP31904690 A JP 31904690A JP 3087306 B2 JP3087306 B2 JP 3087306B2
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- temperature
- heater
- heating
- heat exchanger
- 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.)
- Expired - Lifetime
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Air Conditioning Control Device (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は冷房時は圧縮機を利用し、暖房時は圧縮機以
外の冷媒搬送手段と冷媒加熱器を利用する暖冷房機の制
御装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a warming / cooling machine that uses a compressor during cooling and uses a refrigerant conveying means and a refrigerant heater other than the compressor during heating. is there.
従来の技術 従来この種の暖冷房機は、例えば特開昭57−101263号
公報に示されているように、第３図のような構成になっ
ている。2. Description of the Related Art Conventionally, this type of heating / cooling machine has a configuration as shown in FIG. 3 as disclosed in, for example, Japanese Patent Application Laid-Open No. 57-101263.
すなわち、圧縮機加熱ヒータ２を具備した圧縮機１、
四方弁３、室外熱交換器用ファン５を有する室外熱交換
器４、第１電磁弁６、キャピラリチューブ７、室内熱交
換器用ファン９を有する室内熱交換器８、第２電磁弁1
0、逆止弁11、アキュムレータ12を順に配管した循環回
路を構成する。また、第３電磁弁13、冷媒ポンプ14、バ
ーナ16で加熱される冷媒加熱器15の直列配管回路をキャ
ピラリチューブ７の下流と第２電磁弁10の上流との間に
接続している。そして、冷房は室外熱交換器４を凝縮器
とし、室内熱交換器８を蒸発器として圧縮機１の運転に
よる冷房サイクルを構成し、暖房運転は冷媒加熱器15を
バーナ16で加熱することにより蒸発器とし、室内熱交換
器８を凝縮器として、冷媒ポンプを冷媒搬送手段として
暖房サイクルを構成し、圧縮機１への冷媒滞溜を防ぐと
共に暖房運転時に行なわれる冷媒回収運転を短縮するた
めに、圧縮機の温度を所定値に保つごとく圧縮機加熱ヒ
ータ２を運転するための圧縮機温度検知部を有してい
る。また図に示されていないが圧縮機１の温度異常上昇
時の安全保護として温度スイッチを別途使用するのが通
常である。That is, the compressor 1 having the compressor heater 2,
Four-way valve 3, outdoor heat exchanger 4 having outdoor heat exchanger fan 5, first electromagnetic valve 6, capillary tube 7, indoor heat exchanger 8 having indoor heat exchanger fan 9, second electromagnetic valve 1
0, a check circuit 11, and an accumulator 12 are sequentially arranged in a circulation circuit. Further, a series piping circuit of the refrigerant heater 15 heated by the third solenoid valve 13, the refrigerant pump 14, and the burner 16 is connected between the downstream of the capillary tube 7 and the upstream of the second solenoid valve 10. The cooling is performed by operating the compressor 1 using the outdoor heat exchanger 4 as a condenser and the indoor heat exchanger 8 as an evaporator. The heating operation is performed by heating the refrigerant heater 15 with the burner 16. A heating cycle is constituted by an evaporator, an indoor heat exchanger 8 as a condenser, and a refrigerant pump as a refrigerant conveying means, in order to prevent the refrigerant from remaining in the compressor 1 and to shorten the refrigerant recovery operation performed during the heating operation. In addition, a compressor temperature detecting unit for operating the compressor heater 2 so as to keep the temperature of the compressor at a predetermined value is provided. Although not shown in the figure, a temperature switch is usually used separately for safety protection when the temperature of the compressor 1 rises abnormally.
以上の構成で暖房運転開始時には第１電磁弁６を閉成
し、四方弁３を圧縮機１の吐出冷媒ガスが室内熱交換器
８へ流れるように切換え、圧縮機１を運転する。このよ
うにすることにより室外熱交換器4,アキュムレータ12等
からの冷媒回収運転を所定時間行なった後、冷媒加熱器
15,冷媒ポンプ14を運転開始すると共に、圧縮機１を停
止させる構成となっている。With the above configuration, at the start of the heating operation, the first solenoid valve 6 is closed, the four-way valve 3 is switched so that the refrigerant gas discharged from the compressor 1 flows to the indoor heat exchanger 8, and the compressor 1 is operated. In this way, after performing the refrigerant recovery operation from the outdoor heat exchanger 4, the accumulator 12, etc. for a predetermined time, the refrigerant heater
15, the operation of the refrigerant pump 14 is started and the compressor 1 is stopped.
発明が解決しようとする課題 しかし、上記のような構成では、圧縮機の温度異常上
昇時の安全保護として温度スイッチ１ケだけであり、こ
の温度スイッチの取付け不良等で温度スイッチが正常に
作動しなかった場合、圧縮機の保護が完全にできないと
いった問題がある。また、温度スイッチが作動すると自
動復帰式のものでも、圧縮機の熱容量が大きく、また復
帰までの温度差を大きく設計されているために復帰に長
時間を要するといった課題と圧縮機加熱ヒータ制御用の
温度検知部を単独で設ける必要があるといった課題とを
有していた。SUMMARY OF THE INVENTION However, in the above configuration, only one temperature switch is provided as safety protection when the temperature of the compressor rises abnormally, and the temperature switch normally operates due to improper mounting of the temperature switch. Otherwise, there is a problem that the compressor cannot be completely protected. In addition, even if the temperature switch is activated, even if it is of the automatic reset type, the heat capacity of the compressor is large and the temperature difference until the return is designed to be large, so it takes a long time to return the compressor. There is a problem that it is necessary to provide the temperature detecting section alone.
本発明はかかる従来の課題を解決するもので、圧縮機
の温度異常上昇時の安全保護手段を２重に設けることで
安全保護の信頼性の向上と温度検知手段共用化による個
数低減を目的としている。The present invention solves such a conventional problem, and aims to improve the reliability of safety protection and reduce the number by sharing temperature detection means by providing double safety protection means when the temperature of the compressor abnormally rises. I have.
課題を解決するための手段 上記課題を解決するために、本発明の暖冷房機は、圧
縮機、室内熱交換器、室外熱交換器、絞り装置等により
冷媒回路を構成し、前記圧縮機の温度を所定の温度に保
持するための圧縮機加熱ヒータと、前記圧縮機の温度検
知により開成する接点を有し、その接点で直接圧縮機の
電源回路を開成する温度スイッチと、前記圧縮機の温度
を検知する圧縮機温度検知手段と、前記圧縮機温度検知
手段の信号を受ける低い温度設定比較部および高い温度
設定比較部と、低い温度設定比較部の比較結果で制御さ
れる圧縮機加熱ヒータ駆動部と、高い温度比較部の比較
結果で制御される圧縮機駆動部を有し、前記高い温度設
定比較部の設定温度を温度スイッチの設定温度以下とし
たものである。Means for Solving the Problems In order to solve the above problems, the heating and cooling machine of the present invention comprises a refrigerant circuit including a compressor, an indoor heat exchanger, an outdoor heat exchanger, a throttling device, and the like. A compressor heater for maintaining the temperature at a predetermined temperature, a contact having a contact opened by detecting the temperature of the compressor, a temperature switch for directly opening a power supply circuit of the compressor at the contact, and a temperature switch for the compressor. Compressor temperature detecting means for detecting a temperature; a low temperature setting comparing section and a high temperature setting comparing section receiving a signal from the compressor temperature detecting means; and a compressor heater controlled by a comparison result of the low temperature setting comparing section. A compressor drive unit controlled by a comparison result of the high temperature comparison unit, wherein a set temperature of the high temperature setting comparison unit is equal to or lower than a set temperature of a temperature switch.
作用 本発明は上記した構成によって、圧縮機温度検知手段
による圧縮機駆動部の開閉による圧縮機の異常温度上昇
保護と、直接圧縮機の電源回路を開成する接点を有する
温度スイッチによる圧縮機の異常温度上昇保護と２重の
安全保護手段を用いるため、例えばどちらかの手段が作
動不能になった時でも圧縮機の異常温度上昇に対する安
全保護の信頼性が大巾に向上する。また、圧縮機温度検
知手段を圧縮機加熱ヒータの制御用として使用すること
で材料費の低減の効果がある。Operation The present invention has the above-described configuration, and protects an abnormal temperature rise of a compressor due to opening and closing of a compressor drive unit by a compressor temperature detecting means, and an abnormality of a compressor due to a temperature switch having a contact for directly opening a power circuit of the compressor. Since the temperature rise protection and the double safety protection means are used, the reliability of the safety protection against the abnormal temperature rise of the compressor is greatly improved, for example, even when one of the means becomes inoperable. Also, the use of the compressor temperature detecting means for controlling the compressor heater has the effect of reducing material costs.
実施例 以下、本発明の一実施例について添付図面にもとづい
て説明する。Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
第１図は本発明のシステムブロック図を、第２図は電
気回路ブロック図を示す。図中、第３図の従来例と同じ
構成部品には同じ符号を付して詳細な説明を省略し、異
なる部分を中心に説明する。17は圧縮機１の温度を検知
する圧縮機温度検知手段、18は圧縮機加熱ヒータ駆動
部、19は圧縮機駆動部、20は圧縮機温度検知手段17の信
号を受ける低い設定温度比較部で、21は高い設定温度比
較部である。22は温度スイッチで、圧縮機１の温度の検
知により開成する接点を有し、その接点で直接、圧縮機
１の電源回路を開成する構造のもので、例えばバイメタ
ル式のサーモスタット，液膨脹式，ガス膨脹式等のサー
モスタット等である。前記低い設定温度比較部20の設定
温度は圧縮機１の冷媒滞溜を最小限にする目的として、
暖冷房機の設置される雰囲気温度よりも高く設定され
る。また、暖房運転開始時に圧縮機１を駆動して、室外
熱交換器４内の冷媒を室内熱交換器８側へ冷媒回収運転
する際に冷媒回収運転所要時間の短縮と油持ち出し低減
のために必要な圧縮機温度は40℃以上であるために、上
記低い設定温度は暖冷房機の設置される雰囲気温度の最
高温度より若干高めの40〜45℃に設定される。前記高い
設定温度比較部21の設定温度と、温度スイッチ22の設定
温度は圧縮機の温度異常上昇時の安全保護が目的である
ため、圧縮機１の運転許容上限温度に近い温度で設定さ
れるが、前記高い設定温度比較部21の設定温度を温度ス
イッチ22の設定温度より低く設定しておく。FIG. 1 is a system block diagram of the present invention, and FIG. 2 is an electric circuit block diagram. In the figure, the same components as those in the conventional example of FIG. 3 are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described. 17 is a compressor temperature detecting means for detecting the temperature of the compressor 1, 18 is a compressor heater driving section, 19 is a compressor driving section, and 20 is a low set temperature comparing section which receives a signal from the compressor temperature detecting section 17. , 21 are high set temperature comparison sections. Reference numeral 22 denotes a temperature switch which has a contact which opens when the temperature of the compressor 1 is detected, and has a structure in which a power circuit of the compressor 1 is opened directly by the contact. For example, a bimetal type thermostat, a liquid expansion type, It is a thermostat of gas expansion type or the like. The set temperature of the low set temperature comparison unit 20 is set to minimize the refrigerant accumulation in the compressor 1,
The temperature is set higher than the ambient temperature where the heater / cooler is installed. Further, when the compressor 1 is driven at the start of the heating operation to perform the refrigerant recovery operation of the refrigerant in the outdoor heat exchanger 4 to the indoor heat exchanger 8 side, in order to shorten the time required for the refrigerant recovery operation and reduce oil take-out. Since the required compressor temperature is 40 ° C. or higher, the low set temperature is set to 40 to 45 ° C., which is slightly higher than the maximum ambient temperature in which the heating / cooling machine is installed. The set temperature of the high set temperature comparison unit 21 and the set temperature of the temperature switch 22 are set at temperatures close to the allowable operating temperature of the compressor 1 because the purpose is to protect the compressor when the temperature of the compressor abnormally rises. However, the set temperature of the high set temperature comparing section 21 is set lower than the set temperature of the temperature switch 22.
上記構成において、圧縮機１の温度を検知する圧縮機
温度検知手段17の信号を受けて低い設定温度比較部20の
比較結果で、設定値より圧縮機温度が低い場合は圧縮機
加熱ヒータ駆動部18により圧縮機加熱ヒータ２を駆動
し、設定値より高い場合は圧縮機加熱ヒータ２の駆動を
停止することにより圧縮機１の温度を所定の温度以上に
保つ。一方、圧縮機１の温度が異常に上昇してきて、前
記高い設定温度比較部21の設定温度以上になると、圧縮
機駆動部19により圧縮機駆動が停止され、それ以上の温
度上昇を防止する。例えば、圧縮機温度検知手段17又
は、圧縮機駆動部19の不良等で圧縮機１が連続運転され
て、さらに温度上昇が発生する場合は温度スイッチ22の
接点が開成することで、圧縮機１の運転が停止され、温
度異常上昇の防止を行なうものである。In the above configuration, the result of the comparison of the set temperature comparing section 20 which receives the signal of the compressor temperature detecting means 17 for detecting the temperature of the compressor 1 indicates that if the compressor temperature is lower than the set value, the compressor heater driving section The compressor heater 2 is driven by 18, and if it is higher than the set value, the drive of the compressor heater 2 is stopped to maintain the temperature of the compressor 1 at a predetermined temperature or higher. On the other hand, when the temperature of the compressor 1 rises abnormally and becomes equal to or higher than the high set temperature of the set temperature comparison unit 21, the compressor drive is stopped by the compressor drive unit 19, and further temperature rise is prevented. For example, if the compressor 1 is continuously operated due to a failure of the compressor temperature detecting means 17 or the compressor drive unit 19 and the temperature further rises, the contact of the temperature switch 22 is opened to open the compressor 1. Is stopped, and abnormal temperature rise is prevented.
発明の効果 以上のように本発明の暖冷房機によれば次の効果が得
られる。Effects of the Invention As described above, according to the heating / cooling device of the present invention, the following effects can be obtained.
（１）圧縮機の温度を検知する圧縮機温度検知手段、低
い温度設定比較部、高い温度設定比較部を有し、低い温
度設定比較部の比較結果で圧縮機加熱ヒータ駆動部を制
御し、高い温度比較部の比較結果で圧縮機駆動部を制御
する制御構成とすることで、圧縮機加熱ヒータの運転制
御と圧縮機の温度異常上昇時の安全保護制御とを１個の
温度検知手段を共用化する事ができ、温度検知手段の個
数を１個減ずることができるため、それによる材料費低
減、組立作業性の向上が可能となる。(1) a compressor temperature detecting means for detecting a temperature of the compressor, a low temperature setting comparing section, and a high temperature setting comparing section, wherein the compressor heating heater driving section is controlled by a comparison result of the low temperature setting comparing section; By adopting a control configuration that controls the compressor drive unit based on the comparison result of the high temperature comparison unit, the operation control of the compressor heater and the safety protection control when the temperature of the compressor rises abnormally can be performed by one temperature detection unit. Since the temperature detecting means can be shared and the number of the temperature detecting means can be reduced by one, the material cost can be reduced and the assembling workability can be improved.
（２）圧縮機の温度検知により開成する接点を有し、そ
の接点で直接圧縮機の電源回路を開成する温度スイッチ
と、圧縮機の温度を検知してその信号で圧縮機駆動部の
開成を行う圧縮機温度検知手段を有し、圧縮機温度検知
手段の設定温度を温度スイッチの設定温度以下に設定す
ることで、再復帰運転を比較的短時間に行え、また圧縮
機の温度異常上昇に対して２重の安全対策となり、安全
保護の信頼性が大幅に向上する。(2) It has a contact that opens when the temperature of the compressor is detected, and a temperature switch that opens the power supply circuit of the compressor directly at the contact, and opens the compressor drive unit based on the signal of the temperature of the compressor that is detected. By setting the temperature of the compressor temperature detector below the set temperature of the temperature switch, re-recovery operation can be performed in a relatively short time, and abnormal temperature rise of the compressor On the other hand, double safety measures are taken, and the reliability of safety protection is greatly improved.
第１図は本発明の一実施例における暖冷房機のシステム
構成図、第２図は同電気回路図、第３図は従来例を説明
するシステム構成図である。 １……圧縮機、２……圧縮機加熱ヒータ、４……室外熱
交換器、７……キャピラリチューブ、８……室内熱交換
器、17……圧縮機温度検知手段、18……圧縮機加熱ヒー
タ駆動部、19……圧縮機駆動部、20……低い設定温度比
較部、21……高い設定温度比較部、22……温度スイッ
チ。FIG. 1 is a system configuration diagram of a heating / cooling device in one embodiment of the present invention, FIG. 2 is an electric circuit diagram, and FIG. 3 is a system configuration diagram for explaining a conventional example. DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Compressor heater, 4 ... Outdoor heat exchanger, 7 ... Capillary tube, 8 ... Indoor heat exchanger, 17 ... Compressor temperature detecting means, 18 ... Compressor Heater drive unit, 19: Compressor drive unit, 20: Low set temperature comparison unit, 21: High set temperature comparison unit, 22: Temperature switch.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭49−138403（ＪＰ，Ｕ) 実公 昭53−53921（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 1/00 351 F25B 1/00 341 F25B 1/00 399 F04B 49/10 331 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 49-138403 (JP, U) Japanese Utility Model Showa 53-53921 (JP, Y2) (58) Fields investigated (Int. Cl. 7 , DB name) F25B 1/00 351 F25B 1/00 341 F25B 1/00 399 F04B 49/10 331
Claims (1)
り装置等により冷媒回路を構成し、前記圧縮機の温度を
所定の温度に保持するための圧縮機加熱ヒータと、前記
圧縮機の温度検知により開成する接点を有し、その接点
で直接圧縮機の電源回路を開成する温度スイッチと、前
記圧縮機の温度を検知する圧縮機温度検知手段と、前記
圧縮機温度検知手段の信号を受ける低い温度設定比較部
および高い温度設定比較部と、低い温度設定比較部の比
較結果で制御される圧縮機加熱ヒータ駆動部と、高い温
度比較部の比較結果で制御される圧縮機駆動部を有し、
前記高い温度設定比較部の設定温度を温度スイッチの設
定温度以下とした暖冷房機。1. A compressor heater comprising a compressor, an indoor heat exchanger, an outdoor heat exchanger, a throttling device, and the like, and a compressor heater for maintaining a temperature of the compressor at a predetermined temperature. A temperature switch for opening a power supply circuit of the compressor directly at the contact point, a compressor temperature detecting means for detecting a temperature of the compressor, and a compressor temperature detecting means for detecting a temperature of the compressor. A low temperature setting comparison unit and a high temperature setting comparison unit that receive a signal, a compressor heating heater driving unit controlled by a comparison result of the low temperature setting comparison unit, and a compressor driving controlled by a comparison result of the high temperature comparison unit Part
A heating / cooling machine in which a set temperature of the high temperature setting comparison section is set to be equal to or lower than a set temperature of a temperature switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02319046A JP3087306B2 (en) | 1990-11-21 | 1990-11-21 | Heating and cooling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02319046A JP3087306B2 (en) | 1990-11-21 | 1990-11-21 | Heating and cooling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04187939A JPH04187939A (en) | 1992-07-06 |
| JP3087306B2 true JP3087306B2 (en) | 2000-09-11 |
Family
ID=18105904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02319046A Expired - Lifetime JP3087306B2 (en) | 1990-11-21 | 1990-11-21 | Heating and cooling machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3087306B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101807164B1 (en) * | 2016-08-03 | 2017-12-11 | 강우람 | Rubber power helicopter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7150185B2 (en) * | 2019-08-28 | 2022-10-07 | 三菱電機株式会社 | air conditioner |
-
1990
- 1990-11-21 JP JP02319046A patent/JP3087306B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101807164B1 (en) * | 2016-08-03 | 2017-12-11 | 강우람 | Rubber power helicopter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04187939A (en) | 1992-07-06 |
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