JPH0395360A - Heating and cooling apparatus - Google Patents
Heating and cooling apparatusInfo
- Publication number
- JPH0395360A JPH0395360A JP1233222A JP23322289A JPH0395360A JP H0395360 A JPH0395360 A JP H0395360A JP 1233222 A JP1233222 A JP 1233222A JP 23322289 A JP23322289 A JP 23322289A JP H0395360 A JPH0395360 A JP H0395360A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- refrigerant
- compressor
- heat exchanger
- timer
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 42
- 238000001816 cooling Methods 0.000 title claims description 10
- 239000003507 refrigerant Substances 0.000 claims abstract description 63
- 238000011084 recovery Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 22
- 238000002485 combustion reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
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１？Ｉｉ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。[Detailed Description of the Invention] Industrial Application Field The present invention has a pressure of 1 during cooling. The present invention relates to a control device for a heating/cooling machine that uses a refrigerant transport means other than a compressor and a refrigerant heater during heating.
従来の技術
従来この種の暖冷房機は、例えば特開昭５７１０１２６
３号公報に示されているように、第４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 device is disclosed in, for example, Japanese Patent Application Laid-Open No. 5710126.
As shown in Publication No. 3, it has a configuration as shown in FIG.
すなわち、圧１１機加熱ヒータ２を具備した圧縮機ｌ，
四方弁３，室外熱交換器４，室外熱交換器用ファン５．
第１電磁弁６．キャピラリチューブ７，室内熱交換器８
，室内熱交換器用ファン９第２電磁弁１０．逆止弁１１
．アキュムレータ１２，第３電磁弁１３，冷媒ボンブ１
４，冷媒加熱器１５．バーナ１６の構或において、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の運転による冷媒サイクルを構或し、
暖房運転は冷媒加熱器１５をバーナ１６で加熱すること
により藤発器とし、室内熱交換器８を凝縮器として、冷
媒ボンブを冷媒搬送手段として暖房サイクルを構成し、
圧縮機ｌへの冷媒滞溜を防ぐと共にボンブダウン運転を
短縮するために圧縮機加熱ヒータ２で圧縮機１を加熱し
一定の温度を保持している。That is, a compressor l equipped with a compressor heater 2,
Four-way valve 3, outdoor heat exchanger 4, outdoor heat exchanger fan 5.
First solenoid valve6. Capillary tube 7, indoor heat exchanger 8
, indoor heat exchanger fan 9 second solenoid valve 10. Check valve 11
．． Accumulator 12, third solenoid valve 13, refrigerant bomb 1
4. Refrigerant heater 15. In the structure of the burner 16, a refrigerant cycle is constructed by operating the compressor 1, with the outdoor heat exchanger 4 as a condenser and the indoor heat exchanger 8 as an evaporator.
In the heating operation, the refrigerant heater 15 is heated with the burner 16 to form a heating cycle, the indoor heat exchanger 8 is used as the condenser, and the refrigerant bomb is used as the refrigerant conveyance means, forming a heating cycle.
In order to prevent refrigerant from accumulating in the compressor 1 and to shorten bomb-down operation, the compressor 1 is heated by a compressor heater 2 to maintain a constant temperature.
以上の構或で、暖房運転開始時には第１電磁弁６を閉威
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、さらに、室内熱交換器用ファ
ン９が停止した状態で圧縮機ｌによるボンブダウン運転
を行なった後冷媒ポンブ１４．冷媒加熱器１５．および
窯内熱交換器用ファン９の運転開始と共に、圧縮機ｌで
停止させる構戒となっている．
発明が解決しようとする課題
しかし、上記のような構戒では、暖房運転開始時には、
圧縮機加熱ヒータによって圧縮機が十分に昇温している
ことを前提としているが、例えば、ユニットを設置直後
または、長期間電源をＯＦＦされて圧縮機が冷たく、さ
らに、室外熱交換器への冷媒の漏れ込みも多い状態にお
いては、設定された所定のポンプダウン時間内に暖房回
路側へ十分に冷媒回収ができずに、暖房運転中に冷媒加
熱器の温度が異常に上昇する等の現象が生して、正常な
暖房運転ができないといった課題を有していた。With the above structure, when heating operation starts, 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 indoor heat exchanger fan is closed. After the compressor l performs bomb-down operation with the refrigerant pump 14 stopped. Refrigerant heater 15. When the in-kiln heat exchanger fan 9 starts operating, the compressor 1 is stopped. Problems to be Solved by the Invention However, with the above-mentioned structure, when heating operation starts,
It is assumed that the compressor has been sufficiently heated by the compressor heater. In situations where there is a lot of refrigerant leakage, the refrigerant cannot be sufficiently recovered to the heating circuit within the set pump-down time, and the temperature of the refrigerant heater may rise abnormally during heating operation. However, there was a problem in that the heating operation could not be performed normally due to the generation of heat.
本発明はかかる従来の！ｉ題を解決するもので、暖房運
転開始時に暖房回路側へ十分に冷媒回収を行ない、安定
した暖房運転を可能とすることを目的としている。The present invention eliminates such conventional problems! The purpose of this system is to sufficiently recover refrigerant to the heating circuit at the start of heating operation to enable stable heating operation.
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の制御装置
は、暖房時は圧縮機以外の冷媒搬送手段冷媒加熱器，室
内熱交換器とにより冷媒回路を構成し、前記圧ｍ機の臘
度を検知する温度検知手段と、圧縮機を駆動することで
室外熱交換器の冷媒を前記室内熱交換器に回収する回収
手段と、この回収手段の駆動を制御する制御装置を有し
、前記制御装置は前記温度検知手段の検知温度を所定の
温度と比較する比較部と、第１のタイマと、第１のタイ
マより長い設定時間を持つ第２のタイマと、前記比較部
の比較結果で所定の温度よりも低い時には第２のタイマ
、高い時には第１のタイマに切替える切替部と、前記第
１及び第２のタイマが設定時間になるまで前記回収手段
を駆動する回収制御部を有する構戒としたものである．
作用
本発明は上記した構或によって、暖房運転開始時の冷媒
回収運転時間を圧縮機の温度が高い時には短かく、低い
時には長くすることで、暖房運転に必要な．冷媒回収を
確実に、行なうことで安定した暖房運転が可能となる。Means for Solving the Problems In order to solve the above problems, the heating/cooling device control device of the present invention configures a refrigerant circuit with a refrigerant conveying means other than a compressor, a refrigerant heater, and an indoor heat exchanger during heating. , a temperature detection means for detecting the degree of temperature of the compressor, a recovery means for recovering refrigerant from the outdoor heat exchanger to the indoor heat exchanger by driving a compressor, and controlling the driving of the recovery means. The control device includes a comparison unit that compares the temperature detected by the temperature detection means with a predetermined temperature, a first timer, and a second timer having a set time longer than the first timer. a switching unit that switches to a second timer when the comparison result of the comparison unit is lower than a predetermined temperature and to a first timer when the temperature is higher; and a switching unit that drives the recovery means until the first and second timers reach a set time. The system is equipped with a collection control section that controls the Effect of the present invention With the above-described structure, the refrigerant recovery operation time at the start of the heating operation is shortened when the compressor temperature is high and lengthened when the compressor temperature is low, thereby reducing the time required for the heating operation. Reliable refrigerant recovery enables stable heating operation.
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。EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第１図は、本発明のシステムブロック図を示す。FIG. 1 shows a system block diagram of the present invention.
第１図において、１は圧縮機、２は圧縮機１の下部に設
けられた圧縮機加熱用ヒータ、３は圧縮機１の吐出管中
に設けられた第１逆止弁、４は四方弁、５は室外熱交換
器、６は室外熱交換器用送風機、７は室内熱交換器、８
は室外熱交換器用送風機、９はアキュムレー夕、１０は
冷媒加熱器、１１は冷媒加熱器１０を加熱するための燃
焼バーナ、ｌ２は気液セバレータ、１３は受液器、１４
は第ｌのｔ磁弁で気液セバレータ１２の上部と受液器１
３の上部を結ぶ配管工５中に位置せしめる。１６は第２
の逆止弁で受液器１３の下部と気液セバレータ１２の下
部とを結ぶ配管１７中に位置せしめる。１日は第３の逆
止弁で室内熱交換器７と受液器１３の上部を結ぶ配管１
９中に位置せしめる．２０は第４の逆止弁で気液セバレ
ータ１２の上部と、第１の逆止弁３と四方弁４のを結ぶ
配管２１とを結ぶ配管２２中に位置せしめる。２３は第
１のキャビラリチューブ、２４は第２の電磁弁、この第
１のキャビラリチューブ２３と第２の電磁弁２４は室外
熱交換器５と冷媒加熱器１０の下部を結ぶ配管２４中に
直列に位置せしめる。２６は第３の電磁弁、２７は第２
のキャビラリチューブ、この第３の電磁弁２６と第２の
キャビラリチューブ２７は気液セパレータ１２の下部と
冷媒加熱器の下部を結ぶ配管２８と配管１９を結ぶ配管
２９中に直列に位置せしめる。In Fig. 1, 1 is a compressor, 2 is a compressor heater provided at the bottom of the compressor 1, 3 is a first check valve provided in the discharge pipe of the compressor 1, and 4 is a four-way valve. , 5 is an outdoor heat exchanger, 6 is an outdoor heat exchanger blower, 7 is an indoor heat exchanger, 8
1 is a blower for an outdoor heat exchanger, 9 is an accumulator, 10 is a refrigerant heater, 11 is a combustion burner for heating the refrigerant heater 10, 12 is a gas-liquid separator, 13 is a liquid receiver, 14
is the l-th magnetic valve, which connects the upper part of the gas-liquid separator 12 and the liquid receiver 1.
Position it in the plumber 5 connecting the upper part of 3. 16 is the second
The check valve is located in the pipe 17 connecting the lower part of the liquid receiver 13 and the lower part of the gas-liquid separator 12. On the 1st, the pipe 1 connects the indoor heat exchanger 7 and the upper part of the liquid receiver 13 with the third check valve.
Place it in the middle of 9. A fourth check valve 20 is located in a pipe 22 that connects the upper part of the gas-liquid separator 12 and a pipe 21 that connects the first check valve 3 and the four-way valve 4. 23 is a first cabillary tube, 24 is a second solenoid valve, and the first cabillary tube 23 and the second solenoid valve 24 are connected to a pipe 24 connecting the outdoor heat exchanger 5 and the lower part of the refrigerant heater 10. be placed in series with. 26 is the third solenoid valve, 27 is the second
The third solenoid valve 26 and the second cavillary tube 27 are placed in series in a pipe 29 that connects a pipe 28 and a pipe 19 between the lower part of the gas-liquid separator 12 and the lower part of the refrigerant heater. .
冷媒加熱器１０の上部と気液セパレータ１２の上部とは
配管３０で結ばれる。第１電磁弁１４と第２？Ｊａ弁２
４は配管３１で結ばれる。The upper part of the refrigerant heater 10 and the upper part of the gas-liquid separator 12 are connected by a pipe 30. The first solenoid valve 14 and the second? Ja dialect 2
4 are connected by a pipe 31.
上記冷媒回路構戒において、冷媒運転は四方弁４を圧縮
機１の吐出ガスが室外熱交換器５へ流れるごとく切替え
、第２電磁弁２４と第３＠磁弁２６を開とすることで第
１キャビラリチューブ２３と第２キャビラリチューブ２
７を絞り装置とし、室内熱交換器７を蒸発器として作用
させる冷媒回路を構戒する。暖房運転は四方弁４を冷房
運転時とは逆の方向に切替え、燃焼バーナ１１で冷媒加
熱器１０を加熱することで冷媒加熱器１０の中の冷媒が
加熱され、気液セバレータ１２で高温となった気相状態
の冷媒が配管２２，逆止弁２０．四方弁４を経て室内熱
交換器７へ押し出され、室内熱交換器７で放熱して室内
の暖房を行ない液化した冷媒液は配管１９．逆止弁１８
を経て受液器１３中に移動する。受液器１３に溜った冷
媒液は、第１の電磁弁１４を開にすることで、気液セバ
レータ１２の圧力を導くことで受液器１３と気液セバレ
ータｌ２の落差で第２の逆止弁１６を経て気液セバレー
タｌ２へ戻される．以上のごとく、受液器１３の第１の
電磁弁ｌ４の開閉動作と、第３逆止弁１８の逆止作用と
で熱搬送媒体である冷媒を圧縮機１の運転なしで行なう
ことができる。即ち、受液器１３と第１の電磁弁１４と
第３の逆止弁１Ｂが冷媒搬送手段３２となる。In the above refrigerant circuit configuration, the refrigerant operation is performed by switching the four-way valve 4 so that the discharge gas of the compressor 1 flows to the outdoor heat exchanger 5, and opening the second solenoid valve 24 and the third @ solenoid valve 26. 1 cabillary tube 23 and 2nd cabillary tube 2
7 is a throttle device, and a refrigerant circuit is constructed in which the indoor heat exchanger 7 acts as an evaporator. In heating operation, the four-way valve 4 is switched in the opposite direction to that in cooling operation, and the combustion burner 11 heats the refrigerant heater 10, so that the refrigerant in the refrigerant heater 10 is heated, and the gas-liquid separator 12 heats the refrigerant to a high temperature. The refrigerant in a gaseous state flows through the piping 22 and the check valve 20. The refrigerant liquid is pushed out to the indoor heat exchanger 7 through the four-way valve 4, radiates heat in the indoor heat exchanger 7, heats the room, and is liquefied. Check valve 18
The liquid then moves into the liquid receiver 13 through the process. By opening the first electromagnetic valve 14, the refrigerant liquid accumulated in the liquid receiver 13 is transferred to the second reverse by the head difference between the liquid receiver 13 and the gas-liquid separator l2. It passes through the stop valve 16 and returns to the gas-liquid separator l2. As described above, the opening/closing operation of the first electromagnetic valve l4 of the liquid receiver 13 and the check action of the third check valve 18 make it possible to release the refrigerant, which is a heat transfer medium, without operating the compressor 1. . That is, the liquid receiver 13, the first electromagnetic valve 14, and the third check valve 1B serve as the refrigerant conveying means 32.
上記暖房運転を行なう前に、暖房回路としていない室外
熱交換器５．アキュムレータ９，圧縮機１中の冷媒を暖
房回路側へ回収する回収運転を行なう。四方弁４を暖房
運転時と同じ方向にし、室外熱交換器５がアキュムレー
タ９と連結する状態で、圧１１［１を運転して室外熱交
換器５とアキエムレータ９と圧縮機ｌの冷媒を室内熱交
換器７へ回収する．この時室内熱交換器用送風機８は運
転して室内熱交換器７の冷媒を十分液化し、配管１９か
ら受液器ｌ３へと液冷媒を戻しやすくする。即ち圧縮機
ｌ，第１の逆止弁３，四方弁４で冷媒回収手段３３とな
る．３４は圧縮機１の温度を検知する温度検知手段、３
５は前記回収手段３３の駆動と燃焼バーナ１１の駆動を
制御する制御装置、３６は回収手段３３を駆動する回収
制御部、３７は燃焼バーナ１１を駆動する燃焼制御部、
３８は第１のタイマ、３９は第１のタイマより長い設定
時間を持つ第２のタイマ、４０は第１のタイマ３８と第
２のタイマ３９を切り替える切替部、４１は瓜度検知手
段３４の検知温度を所定の温度と比較する比較部で、検
知温度が所定温度よりも高い時には設定時間の短い第１
のタイマを作動させるごとく切替部４０を切替え、検知
温度が所定温度より低い時には設定時間の長い第２のタ
イマを作動させるごとく切替部４０を切替え、どちらか
のタイマをスタートさせ、そのタイマが設定時間を経過
するまで回収制御部３６を作動させて回収手段３３を駆
動させる。タイマが設定時間を経過すると回収手段３３
を停止し、燃焼制１■部３７を作動し、燃焼バーナｌ１
を駆動させる。圧縮機１の温度によって冷媒の回収時間
は第２図に示すごとく、温度が高い時には短く、温度が
低い時には長《なるため、上記比較部４１の所定温度は
、圧縮機加熱用ヒータ２の制御設定温度より若干低めに
設定しておき、その設定温度Ｔ３の時に必要な冷媒回収
所要時間ｔ，を第１のタイマ３日の設定時間とし、暖房
運転期間中の最低外気温度に近い温度ＴＬに相当する時
間ｔ２を第２のタイマ３９の設定時間とすることで、圧
縮機１の温度に関係なく十分に冷媒回収が可能となり安
定した暖房運転が得られるという効果がある．また、圧
縮機１の温度が十分に高い時には短い時間で回収運転を
終了できるという効果もある．以上の処理の流れをマイ
クロコンピュータで実現した場合のフローチャートを第
３図に示す．第３図において機能を有する部品の番号を
横に記す．
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．
（１）暖房運転の開始時が冷媒回収運転時間を圧縮機の
温度を検知して、所定の温度よりも高い時には第１のタ
イマにより時間を短かくし、温度が低い時には第２のタ
イマにより時間を長くすることによって、暖房回路に必
要な冷媒回収を確実に行ない安定した暖房運転が得られ
る。Before performing the above-mentioned heating operation, the outdoor heat exchanger that is not used as a heating circuit5. A recovery operation is performed to recover the refrigerant in the accumulator 9 and compressor 1 to the heating circuit side. With the four-way valve 4 in the same direction as during heating operation, and with the outdoor heat exchanger 5 connected to the accumulator 9, operate the pressure 11 [1] to transfer the refrigerant from the outdoor heat exchanger 5, the achievator 9, and the compressor 1 to the room. It is recovered to heat exchanger 7. At this time, the indoor heat exchanger blower 8 is operated to sufficiently liquefy the refrigerant in the indoor heat exchanger 7, making it easier to return the liquid refrigerant from the pipe 19 to the receiver l3. That is, the compressor 1, the first check valve 3, and the four-way valve 4 form a refrigerant recovery means 33. 34 is a temperature detection means for detecting the temperature of the compressor 1;
5 is a control device that controls the drive of the recovery means 33 and the combustion burner 11; 36 is a recovery control section that drives the recovery means 33; 37 is a combustion control section that drives the combustion burner 11;
38 is a first timer; 39 is a second timer having a longer set time than the first timer; 40 is a switching section for switching between the first timer 38 and the second timer 39; In the comparison section that compares the detected temperature with a predetermined temperature, when the detected temperature is higher than the predetermined temperature, the first
When the detected temperature is lower than a predetermined temperature, the switching unit 40 is switched to operate a second timer with a longer set time, and one of the timers is started, and that timer is set. The collection control section 36 is operated to drive the collection means 33 until the time elapses. When the timer elapses the set time, the collection means 33
, the combustion control 1■ section 37 is activated, and the combustion burner l1
drive. As shown in FIG. 2, depending on the temperature of the compressor 1, the refrigerant recovery time is short when the temperature is high and long when the temperature is low. The temperature is set slightly lower than the set temperature, and the required refrigerant recovery time t when the set temperature T3 is set is the set time of 3 days on the first timer, and the temperature TL is set close to the lowest outside temperature during the heating operation period. By setting the corresponding time t2 as the set time of the second timer 39, there is an effect that sufficient refrigerant recovery is possible regardless of the temperature of the compressor 1, and stable heating operation can be obtained. Another advantage is that when the temperature of the compressor 1 is sufficiently high, the recovery operation can be completed in a short time. Figure 3 shows a flowchart when the above processing flow is implemented on a microcomputer. In Figure 3, numbers of functional parts are written next to them. Effects of the Invention As described above, the heating/cooling device of the present invention provides the following effects. (1) The refrigerant recovery operation time at the start of heating operation is determined by detecting the temperature of the compressor, and when the temperature is higher than a predetermined temperature, the first timer is used to shorten the time, and when the temperature is low, the second timer is used to shorten the time. By increasing the length, the refrigerant required for the heating circuit can be reliably recovered and stable heating operation can be achieved.
（２）特に回収運転時間が短かくても良い圧縮機の温度
の高い時には回収運転時間を短かくすることで、暖房の
立上りを早く、また回収運転時の圧縮機の消費電力を軽
減する効果がある。(2) In particular, when the compressor temperature is high, the recovery operation time can be shortened. By shortening the recovery operation time, heating can be started quickly and the power consumption of the compressor during recovery operation can be reduced. There is.
第１図は本発明の一実施例における暖冷房機の制御装Ｉ
のシステムブロック図、第２図は圧縮機温度と冷媒回収
所要時間の特性図、第３図はマイクロコンピュータの処
理の流れを示すフローチャート、第４図は従来例を説明
する構成図である．ｌ・・・・・・圧縮機、５・・・・
・・室外熱交換器、７・・・・・・室内熱交換器、ｌＯ
・・・・・・冷媒加熱器、２３・・・・・・第ｌキャビ
ラリチューブ、２７・・・・・・第２キャビラリチュー
ブ、３２・・・・・・冷媒搬送手段、３３・・・・・・
回収手段、３４・・・・・・温度検知手段、３５・・・
・・・制御装置、３６・・・・・・回収制御部、３８・
・・・・・第１のタイマ、３９・・・・・・第２のタイ
マ、４０・・・・・・切替部、４１・・・・・・比較部
。FIG. 1 shows a control system I for a heating/cooling machine in one embodiment of the present invention.
2 is a characteristic diagram of the compressor temperature and the time required for refrigerant recovery, FIG. 3 is a flowchart showing the process flow of the microcomputer, and FIG. 4 is a configuration diagram explaining a conventional example. l... Compressor, 5...
...Outdoor heat exchanger, 7...Indoor heat exchanger, lO
...refrigerant heater, 23...first cabillary tube, 27...second cabillary tube, 32...refrigerant conveying means, 33...・・・・・・
Collection means, 34...Temperature detection means, 35...
...Control device, 36...Recovery control section, 38.
...First timer, 39...Second timer, 40...Switching section, 41...Comparison section.
Claims (1)
置により冷媒回路を構成し、暖房時は圧縮機以外の冷媒
搬送手段、冷媒加熱器、室内熱交換器とにより冷媒回路
を構成し、前記圧縮機の温度を検知する温度検知手段と
、圧縮機を駆動することで室外熱交換器の冷媒を前記室
内熱交換器に回収する回収手段と、この回収手段の駆動
を制御する制御装置を有し、前記制御装置は前記温度検
知手段の検知温度を所定の温度と比較する比較部と、第
１のタイマと、第１のタイマより長い設定時間を持つ第
２のタイマと、前記比較部の比較結果で所定温度よりも
低い時には第２のタイマ、高い時には第１のタイマに切
替える切替部と、前記第１および第２タイマが所定時間
になるまで前記回収手段を駆動する回収制御部を有する
暖冷房機。During cooling, the refrigerant circuit is composed of a compressor, indoor heat exchanger, outdoor heat exchanger, and expansion device; during heating, the refrigerant circuit is composed of a refrigerant transport means other than the compressor, a refrigerant heater, and an indoor heat exchanger. and a temperature detection means for detecting the temperature of the compressor, a recovery means for recovering refrigerant from the outdoor heat exchanger to the indoor heat exchanger by driving the compressor, and a control for controlling the driving of the recovery means. The control device includes a comparison unit that compares the temperature detected by the temperature detection means with a predetermined temperature, a first timer, a second timer having a set time longer than the first timer, and the control device. a switching unit that switches to a second timer when the comparison result of the comparison unit is lower than a predetermined temperature and a first timer when the temperature is higher; and a recovery control that drives the recovery means until the first and second timers reach a predetermined time. Heating/cooling machine with parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1233222A JP2669069B2 (en) | 1989-09-08 | 1989-09-08 | Heating and cooling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1233222A JP2669069B2 (en) | 1989-09-08 | 1989-09-08 | Heating and cooling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0395360A true JPH0395360A (en) | 1991-04-19 |
| JP2669069B2 JP2669069B2 (en) | 1997-10-27 |
Family
ID=16951673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1233222A Expired - Fee Related JP2669069B2 (en) | 1989-09-08 | 1989-09-08 | Heating and cooling machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2669069B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010195582A (en) * | 2009-01-29 | 2010-09-09 | Hitachi Metals Ltd | Center-folded booklet feeding device |
| CN106996596A (en) * | 2017-04-18 | 2017-08-01 | 珠海格力电器股份有限公司 | A kind of air-conditioning system and its exhaust heat recovering method |
-
1989
- 1989-09-08 JP JP1233222A patent/JP2669069B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010195582A (en) * | 2009-01-29 | 2010-09-09 | Hitachi Metals Ltd | Center-folded booklet feeding device |
| CN106996596A (en) * | 2017-04-18 | 2017-08-01 | 珠海格力电器股份有限公司 | A kind of air-conditioning system and its exhaust heat recovering method |
| CN106996596B (en) * | 2017-04-18 | 2023-09-19 | 珠海格力电器股份有限公司 | Air conditioning system and waste heat recovery method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2669069B2 (en) | 1997-10-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |