JPH0245726Y2 - - Google Patents
Info
- Publication number
- JPH0245726Y2 JPH0245726Y2 JP1984121579U JP12157984U JPH0245726Y2 JP H0245726 Y2 JPH0245726 Y2 JP H0245726Y2 JP 1984121579 U JP1984121579 U JP 1984121579U JP 12157984 U JP12157984 U JP 12157984U JP H0245726 Y2 JPH0245726 Y2 JP H0245726Y2
- Authority
- JP
- Japan
- Prior art keywords
- airflow
- condenser
- temperature
- refrigeration
- outdoor
- 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
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- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は冷凍装置、詳しくは圧縮機、空冷式凝
縮器及び蒸発器とを備えた２系統の冷凍回路をも
ち、これら冷凍回路による冷凍運転を独立的に発
停可能とした冷凍装置に関する。[Detailed description of the invention] (Field of industrial application) The invention has a refrigeration system, more specifically, a two-system refrigeration circuit equipped with a compressor, an air-cooled condenser, and an evaporator, and refrigeration operation using these refrigeration circuits. This invention relates to a refrigeration system that can be started and stopped independently.
（従来の技術）
一般に冷凍装置は、例えば実開昭48−47048号
公報に記載され、第５図に概略的に示した如く、
圧縮機Ａと凝縮器Ｂと膨張弁Ｃと蒸発器Ｄとを備
えた冷凍回路を有し、前記凝縮器Ｂには該凝縮器
Ｂに風を送つて前記圧縮機Ａから送られてくる高
圧ガスを冷却する室外フアンＥを付設している。(Prior Art) In general, a refrigeration system is described in, for example, Japanese Utility Model Application Publication No. 48-47048, and as schematically shown in FIG.
It has a refrigeration circuit equipped with a compressor A, a condenser B, an expansion valve C, and an evaporator D, and the condenser B is supplied with high pressure air sent from the compressor A. An outdoor fan E is attached to cool the gas.
ところで、以上の冷凍装置では、室外の温度の
高低に応じて前記凝縮器Ｂの圧力が高低変化する
ことから、室外温度の高低に応じて前記室外フア
ンＥによつて該凝縮器Ｂに供給する風量を増減す
るのが好ましく、そこで従来では前記凝縮器Ｂに
付設する室外フアンＥに速度制御装置Ｆを備えた
可変速型モータＧを組込んで、室外温度に応じて
前記凝縮器Ｂへの送風量を任意調節する如く成し
ている。 By the way, in the above-mentioned refrigeration system, since the pressure in the condenser B varies depending on the outdoor temperature, the pressure is supplied to the condenser B by the outdoor fan E depending on the outdoor temperature. It is preferable to increase or decrease the air volume, and therefore, conventionally, a variable speed motor G equipped with a speed control device F is incorporated into the outdoor fan E attached to the condenser B, and the air flow to the condenser B is adjusted according to the outdoor temperature. The amount of air blown can be adjusted as desired.
（考案が解決しようとする問題点）
ところが、以上の冷凍装置では前記室外フアン
Ｅの駆動モータとして高価な可変速型モータＧを
用いているので全体としてコスト高となる問題が
あつた。(Problems to be Solved by the Invention) However, in the above refrigeration system, an expensive variable speed motor G is used as the drive motor for the outdoor fan E, so there is a problem in that the overall cost is high.
本考案は以上の問題点に着目してなされたもの
で、２系統の冷凍回路を有する冷凍装置におい
て、各冷凍回路の空冷式凝縮器にそれぞれ付設す
る室外フアンの取付位置を工夫すると共に、各室
外フアンを外気温度に応じて個別に発停制御可能
にすることにより外気温度に応じて冷凍運転中の
一方の凝縮器に供給する風量を段階的に調節でき
ながら、高負荷時には、外気温度に係りなく高風
量での運転が行え、全体としてコストダウンを可
能にすることを目的とする。 The present invention was developed by focusing on the above problems, and in a refrigeration system having two refrigeration circuits, the installation position of the outdoor fan attached to the air-cooled condenser of each refrigeration circuit is devised, and each By making it possible to control the outdoor fans to start and stop individually according to the outside air temperature, the air volume supplied to one condenser during refrigeration operation can be adjusted in stages according to the outside air temperature. The purpose is to enable operation at a high air volume without any interference, and to reduce costs overall.
（問題点を解決するための手段）
本考案は室外フアンの付設位置が凝縮器から遠
ざかるに伴ない、前記室外フアンの駆動により前
記凝縮器を通る風量も少なくなることに注目し、
圧縮機１１，２１、空冷式凝縮器１２，２２及び
蒸発器１３，２３とを備えた２系統の冷凍回路
１，２をもち、これら冷凍回路１，２による冷凍
運転を独立的に発停可能とすると共に、高負荷時
２系統冷凍回路１，２の併用運転を行い、低負荷
時一方の冷凍回路１の運転を行う冷凍装置であつ
て、前記各凝縮器１２，２２に対応してそれぞれ
室外フアン１４，２４を付設すると共に、前記各
凝縮器１２，２２及び室外フアン１４，２４を、
一方の凝縮器１２が、該凝縮器２に付設するフア
ン１４に対し、他方の凝縮器２２に付設するフア
ン２４より離反するごとく配設する一方、一方の
冷凍回路１の運転時、外気温度が第１設定温度よ
り高いとき、前記室外フアン１４，２４をともに
駆動し、外気温度が前記第１設定温度以下に低下
したとき他方の凝縮器２２の室外フアン２４のみ
を停止し、かつ、外気温度が前記第１設定温度よ
り低い第２設定温度以下に低下したとき一方の凝
縮器１２の室外フアン１４を停止し、他方の凝縮
器２２の室外フアン２４を駆動して前記凝縮器１
２を通る風量制御を行うと共に、併用運転時、外
気温度と係わりなく前記室外フアン１４，２４を
ともに駆動するごとく前記室外フアン１４，２４
を発停制御可能にしたのである。(Means for Solving the Problems) The present invention focuses on the fact that as the installation position of the outdoor fan moves away from the condenser, the amount of air passing through the condenser due to the drive of the outdoor fan decreases.
It has two refrigeration circuits 1 and 2 equipped with compressors 11 and 21, air-cooled condensers 12 and 22, and evaporators 13 and 23, and the refrigeration operation of these refrigeration circuits 1 and 2 can be started and stopped independently. The refrigeration system also operates the two refrigeration circuits 1 and 2 in combination during high loads, and operates one refrigeration circuit 1 during low loads, with respective condensers 12 and 22 corresponding to each other. In addition to installing outdoor fans 14, 24, each of the condensers 12, 22 and outdoor fans 14, 24,
One condenser 12 is arranged so as to be farther away from the fan 14 attached to the other condenser 22 than the fan 24 attached to the other condenser 22. When the temperature is higher than the first set temperature, both the outdoor fans 14 and 24 are driven, and when the outside air temperature falls below the first set temperature, only the outdoor fan 24 of the other condenser 22 is stopped, and the outside air temperature When the temperature drops to a second set temperature that is lower than the first set temperature, the outdoor fan 14 of one condenser 12 is stopped, and the outdoor fan 24 of the other condenser 22 is driven to reduce the temperature of the condenser 1.
The outdoor fans 14 and 24 control the air flow rate through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the air flow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through a
This made it possible to control the start and stop.
（作用）
本考案によれば、一方の冷凍回路１の運転時、
外気温度に応じて一方の室外フアン１４及び他方
の室外フアン２４をともに駆動したり、一方の室
外フアン１４又は他方の室外フアン２４のみを駆
動したりして、一方の冷凍回路１の運転時、一方
の凝縮器１２へ供給する風量を段階的に調節でき
るし、又、高負荷時には外気温度に係わりなく強
制的に両室外フアン１４，２４をともに強制的に
駆動させ、たとえ外気温度が低くとも冷房負荷が
高いときには両凝縮器１２，２２を有効に作動さ
せられるのである。(Function) According to the present invention, when one of the refrigeration circuits 1 is operating,
When one refrigeration circuit 1 is operated, one outdoor fan 14 and the other outdoor fan 24 are both driven according to the outside air temperature, or only one outdoor fan 14 or the other outdoor fan 24 is driven. The amount of air supplied to one of the condensers 12 can be adjusted in stages, and when the load is high, both outdoor fans 14 and 24 are forcibly driven regardless of the outside air temperature, even when the outside air temperature is low. When the cooling load is high, both condensers 12 and 22 can be effectively operated.
（実施例）
以下、本考案の実勢例に係る冷凍装置を図面に
基づいて説明する。(Example) Hereinafter, a refrigeration system according to an actual example of the present invention will be described based on the drawings.
この冷凍装置は、例えば溶鉱炉におけるクレー
ンの運転室を冷房するとか、或いは輸出用の冷房
機として中近東の地域など昼夜の外気温度の変化
の激しいところでかつ家屋が石でできているた
め、石が昼間に熱され、夜になつて外気温度がか
なり低くなつても家屋内は温度が高いところで使
されるものである。尚、この冷凍装置はチラーな
どにも適用できるものである。 This refrigeration system is used, for example, to cool the operator's cabin of a crane in a blast furnace, or as an air conditioner for export in areas such as the Middle East where the outside temperature changes drastically between day and night, and where houses are made of stone. They are heated during the day and are used in places where the temperature inside the house remains high even when the outside temperature drops considerably at night. Incidentally, this refrigeration device can also be applied to a chiller or the like.
図に示す冷凍装置は、第１圧縮機１１、空冷式
の第１凝縮器１２、第１感温膨張弁（図示せず）
及び第１蒸発器１３を接続した第１冷凍回路１
と、同じく第２圧縮機２１、空冷式の第２凝縮器
２２、第２感温膨張弁（図示せず）及び第２蒸発
器２３を接続した第２冷凍回路２とを備えて、こ
れら各冷凍回路１，２の冷凍運転を独立的に発停
可能と成し、冷凍負荷の大きさにより、例えば低
負荷時には、第１冷凍回路１のみの単独運転を、
又高負荷時には前記第１、第２冷凍回路１，２の
併用運転を行うようにしたものであつて、前記各
冷凍回路１，２を構成する第１、第２凝縮器１
２，２２には、第１、第２室外フアン１４，２４
を、且つ前記第１、第２蒸発器１３，２３には第
１、第２室内フアン１５，２５をそれぞれ独立し
て付設している。 The refrigeration system shown in the figure includes a first compressor 11, an air-cooled first condenser 12, and a first temperature-sensitive expansion valve (not shown).
and a first refrigeration circuit 1 to which a first evaporator 13 is connected.
and a second refrigeration circuit 2 to which a second compressor 21, an air-cooled second condenser 22, a second temperature-sensitive expansion valve (not shown), and a second evaporator 23 are connected. The refrigeration operation of the refrigeration circuits 1 and 2 can be started and stopped independently, and depending on the size of the refrigeration load, for example, when the load is low, only the first refrigeration circuit 1 can be operated independently.
Further, during high load, the first and second refrigeration circuits 1 and 2 are operated in combination, and the first and second condensers 1 constituting each of the refrigeration circuits 1 and 2 are operated in combination.
2, 22, the first and second outdoor fans 14, 24
In addition, first and second indoor fans 15 and 25 are independently attached to the first and second evaporators 13 and 23, respectively.
以上の前記第１、第２冷凍回路１，２を構成す
る各構成部材は第１図及び第２図に概略的に示す
如く壁面３０に組込むハウジング３内に次の如く
収容している。 Each component constituting the first and second refrigeration circuits 1 and 2 described above is housed in a housing 3 that is assembled into a wall 30 as schematically shown in FIGS. 1 and 2 as follows.
即ち前記ハウジング３内を、仕切板３１によ
り、前記壁面３０よりも室内側に位置する冷却室
３ａと、前記壁面３０よりも室外側に位置する機
械室３ｂとに区画すると共に、前記冷却室３ａの
前記仕切板３１と対向する前壁に、吸込口（図示
せず）と冷気吹出口３６とを設け、前記冷却室３
ａ内における前記冷気吹出口３６と対応する位置
に前記第１、第２蒸発器１３，２３を併設し、且
つ該蒸発器１３，２３と前記仕切板３１との間
に、前記第１、第２室内フアン１５，２５を配置
している。 That is, the interior of the housing 3 is divided by a partition plate 31 into a cooling chamber 3a located on the indoor side of the wall surface 30 and a machine room 3b located on the outdoor side of the wall surface 30, and the cooling chamber 3a A suction port (not shown) and a cold air outlet 36 are provided on the front wall facing the partition plate 31 of the cooling chamber 3.
The first and second evaporators 13 and 23 are provided at positions corresponding to the cold air outlet 36 in a, and the first and second evaporators are provided between the evaporators 13 and 23 and the partition plate 31. Two indoor fans 15 and 25 are arranged.
又、前記機械室３ｂの底壁上に第１、第２圧縮
機１１，２１を固定すると共に、該機械室３ｂの
相対向する左右側壁からそれぞれ後壁にかけて一
対の第１、第２外気吸入口３２，３３を、又該機
械室３ｂの上壁には所定間隔離れた一対の第１、
第２温風吹出口３４，３５をそれぞれ設け、該機
械室３ｂ内における前記第１、第２外気吸入口３
２，３３と対応する位置に前記第１、第２凝縮器
１２，２２を、又前記機械室３ｂ内の前記第１、
第２温風吹出口３４，３５近くに前記第１、第２
室外フアン１４，２４をそれぞれ配設するのであ
る。 Further, the first and second compressors 11 and 21 are fixed on the bottom wall of the machine room 3b, and a pair of first and second outside air intakes are installed from the opposite left and right side walls of the machine room 3b to the rear wall, respectively. The upper wall of the machine room 3b has a pair of first openings 32 and 33 spaced apart from each other by a predetermined distance.
Second hot air outlets 34 and 35 are provided, respectively, and the first and second outside air inlets 3 are provided in the machine room 3b.
2 and 33, and the first and second condensers 12 and 22 in the machine room 3b.
The first and second hot air outlets 34 and 35
Outdoor fans 14 and 24 are respectively provided.
しかして、前記第１、第２外気吸入口３２，３
３と対応して設ける前記第１凝縮器１２と第２凝
縮器２２とは互いに離れた位置に配設されると共
に、前記第１凝縮器１２に対応して付設する第１
室外フアン１４と前記第２凝縮器２２に対応して
付設する第２室外フアン２４とも互いに離れるこ
とになるのであつて、この結果、一方の凝縮器１
２が、該凝縮器１２に付設する室外フアン１４に
対し、他方の凝縮器２２に付設する室外フアン２
４より離反する如く配設されるのである。つま
り、前記第１凝縮器１２と第２室外フアン２４と
の距離が、前記第１凝縮器１２と第１室外フアン
１４との距離より遠くなるように配設されるので
ある。 Therefore, the first and second outside air intake ports 32, 3
The first condenser 12 and the second condenser 22 provided corresponding to the first condenser 12 are arranged at positions apart from each other, and the first condenser 12 and the second condenser 22 provided corresponding to the first condenser
The outdoor fan 14 and the second outdoor fan 24 attached corresponding to the second condenser 22 are also separated from each other, and as a result, one of the condensers 1
2 is an outdoor fan 14 attached to the condenser 12, and an outdoor fan 2 attached to the other condenser 22.
It is arranged so that it is separated from 4. In other words, the distance between the first condenser 12 and the second outdoor fan 24 is longer than the distance between the first condenser 12 and the first outdoor fan 14.
本考案は、以上の如く構成した冷凍装置におい
て、一方の冷凍回路１の運転時、外気温度が第１
設定温度より高いとき、前記室外フアン１４，２
４をともに駆動し、外気温度が前記第１設定温度
以下に低下したとき他方の凝縮器２２の室外フア
ン２４のみを停止し、かつ、外気温度が前記第１
設定温度より低い第２設定温度以下に低下したと
き一方の凝縮器１２の室外フアン１４を停止し、
他方の凝縮器２２の室外フアン２４を駆動して前
記凝縮器１２を通る風量制御を行うと共に、併用
運転時、外気温度と係わりなく前記室外フアン１
４，２４をともに駆動するごとく前記室外フアン
１４，２４を発停制御可能にしたのであつて、次
に以上の如く前記冷凍回路の運転及び室外フアン
１４，２４の発停を制御するための電気回路を第
３図に基づいて説明する。 In the present invention, in the refrigeration system configured as described above, when one of the refrigeration circuits 1 is in operation, the outside air temperature is the first.
When the temperature is higher than the set temperature, the outdoor fans 14, 2
4 are both driven, and when the outside air temperature falls below the first set temperature, only the outdoor fan 24 of the other condenser 22 is stopped, and when the outside air temperature is lower than the first set temperature.
When the temperature drops to a second set temperature or lower, which is lower than the set temperature, the outdoor fan 14 of one condenser 12 is stopped;
The outdoor fan 24 of the other condenser 22 is driven to control the air volume passing through the condenser 12, and during combined operation, the outdoor fan 1 is driven regardless of the outside air temperature.
The outdoor fans 14, 24 can be controlled to start and stop by driving both the outdoor fans 14, 24. The circuit will be explained based on FIG.
第３図に示す電気回路は、第１、第２圧縮機モ
ータMC1及びMC2と、前記第１、第２室外フア
ン１４，２４に対応した第１、第２室外フアンモ
ータMF01，MF02の電気機器を備え、これら電気
機器の電源回路に前記第１圧縮機モータMC1の
発停制御回路４と前記第２圧縮機モータMC2の
発停制御回路５と、前記第１、第２室外フアンモ
ータMF01，MF02のフアンモータ発停制御回路６
とを設けている。 The electric circuit shown in FIG. 3 includes first and second compressor motors MC 1 and MC 2 and first and second outdoor fan motors MF 01 and MF corresponding to the first and second outdoor fans 14 and 24, respectively. 02 electrical equipment, and the power supply circuits of these electrical equipment include a start/stop control circuit 4 for the first compressor motor MC 1 , a start/stop control circuit 5 for the second compressor motor MC 2 , and a power supply circuit for the electrical equipment. Fan motor start/stop control circuit 6 for two outdoor fan motors MF 01 and MF 02
and.
前記第１圧縮機モータMC1の発停制御回路４
は、予かじめ設定されている低温（例えば20℃）
以下でオフするサーモスイツチ４１と、前記第１
圧縮機モータ発停制御用の電磁開閉器５２c1とを
備え、前記サーモスイツチ４１の高温側接点に前
記電磁開閉器５２c1を直列に接続している。 Start/stop control circuit 4 for the first compressor motor MC 1
is a preset low temperature (e.g. 20℃)
The thermo switch 41 which is turned off in the following, and the first
The electromagnetic switch 52c 1 is provided for controlling the start/stop of the compressor motor, and the electromagnetic switch 52c 1 is connected in series to the high temperature side contact of the thermoswitch 41.
前記第２圧縮機モータMC2の発停制御回路５
は、予じめ設定されている高温（例えば23℃）以
下でオフするサーモスイツチ５１と、前記第２圧
縮機モータ発停制御用の電磁開閉器５２c2とを備
え、前記サーモスイツチ５１の高温側接点に前記
電磁開閉器５２c2を直列に接続している。 Start/stop control circuit 5 for the second compressor motor MC 2
is equipped with a thermoswitch 51 that turns off at a preset high temperature (for example, 23°C) or lower, and an electromagnetic switch 52c2 for controlling the start/stop of the second compressor motor, The electromagnetic switch 52c 2 is connected in series to the side contact.
一方、フアンモータ発停制御回路６は、例えば
外気温度が第２設定温度の５℃以下で閉動作する
外気サーモスイツチ２３A2及び第２補助リレー
２３X2の直列回路と、例えばべ外気温度が第１
設定温度の20℃以下で閉動作する外気サーモスイ
ツチ２３A1、前記第２補助リレー２３X2の常閉
接点２３X2−１及び第１補助リレー２３X1の直
列回路と前記第１補助リレー２３X1の常閉接点
２３X1−１及び第２室外フアンモータMF02発停
制御用の電磁開閉器５２F02の直列回路と、前記
第２補助リレー２３X2の常閉接点２３X2−２及
び第１室外フアンモータMF02発停制御用の電磁
開閉器５２F01の直列回路の以上の４つの各回路
を並列に接続し、その並列回路の一方を、前記第
１圧縮機モータ発停制御回路４におけるサーモス
イツチ４１の高温側接点に直列に接続している。 On the other hand, the fan motor start/stop control circuit 6 includes a series circuit of an outside air thermoswitch 23A 2 and a second auxiliary relay 23X 2 , which close when the outside air temperature is 5° C. or lower than the second set temperature. 1
A series circuit of an outside air thermoswitch 23A 1 that closes at a temperature below the set temperature of 20°C, a normally closed contact 23X 2 -1 of the second auxiliary relay 23X 2 and the first auxiliary relay 23X 1 , and a series circuit of the first auxiliary relay 23X 1 . A series circuit of the normally closed contact 23X 1 -1 and the electromagnetic switch 52F 02 for start/stop control of the second outdoor fan motor MF 02 , the normally closed contact 23X 2 -2 of the second auxiliary relay 23X 2 and the first outdoor fan The above four series circuits of the electromagnetic switch 52F 01 for controlling the start/stop of the motor MF 02 are connected in parallel, and one of the parallel circuits is connected to the thermoswitch in the first compressor motor start/stop control circuit 4. It is connected in series to the high temperature side contact of No. 41.
尚、第３図において７はメインスイツチ、MF
は前記室内フアン１５，２５のフアンモータ、５
２F1は該室内フアンモータMF発停制御用の電磁
開閉器を示す。 In addition, in Figure 3, 7 is the main switch, MF
is the fan motor of the indoor fans 15, 25, 5
2F1 indicates an electromagnetic switch for controlling the start/stop of the indoor fan motor MF.
以上の構成において、冷凍負荷が小さい時に
は、前記サーモスイツチ４１のみのオン動作によ
り第１冷凍回路１のみが単独運転されるのに対
し、冷凍負荷が大きい時には、前記両サーモスイ
ツチ４１及び５１のオン動作により、第１冷凍回
路１と第２冷凍回路２とが同時に運転されるので
ある。 In the above configuration, when the refrigeration load is small, only the thermoswitch 41 is turned on and only the first refrigeration circuit 1 is operated independently, whereas when the refrigeration load is large, both the thermoswitches 41 and 51 are turned on. Due to the operation, the first refrigeration circuit 1 and the second refrigeration circuit 2 are operated simultaneously.
而して前記第１冷凍回路１のみの単独運転に際
し、外気温度が第１設定温度より低い第２設定温
度の例えば５℃以下であると、前記両外気サーモ
スイツチ２３A1，２３A2が閉じ、これに伴ない
第２補助リレー２３X2が励磁してその常閉接点
23X2−１及び２３X2−２が開くのに対し第１補
助リレー２３X1は第２補助リレー２３X2の常閉
接点２３X2−１が開動作するため消磁してその
常閉接点２３X1−１が閉じるのである。 When only the first refrigeration circuit 1 is operated independently, if the outside air temperature is lower than the second set temperature, for example 5°C, which is lower than the first set temperature, both the outside air thermoswitches 23A 1 and 23A 2 close, Along with this, the second auxiliary relay 23X 2 is energized and its normally closed contact
While 23X 2 -1 and 23X 2 -2 open, the first auxiliary relay 23X 1 is demagnetized and its normally closed contact 23X 1 - opens because the normally closed contact 23X 2 -1 of the second auxiliary relay 23X 2 opens. 1 is closed.
従つて、現在運転中の第１冷凍回路１の第１凝
縮器１２より離れた位置に配置されている第２室
外フアン２４のフアンモータMF02のみが駆動し、
第２図で一点鎖線出示すように第１外気吸入口３
２の他に第１温風吹出口３４、第２外気吸入口３
３から外気を吸込むため、前記第１凝縮器１２を
通過する風量が少なく制御されることゝなる。 Therefore, only the fan motor MF 02 of the second outdoor fan 24, which is located away from the first condenser 12 of the first refrigeration circuit 1 currently in operation, is driven.
The first outside air intake port 3 is shown by the dashed line in Figure 2.
In addition to 2, there is a first hot air outlet 34 and a second outside air inlet 3.
Since outside air is sucked in from the first condenser 12, the amount of air passing through the first condenser 12 is controlled to be small.
次に外気温度が第２設定温度より高い例えば10
℃、即ち第１設定温度の例えば20℃以下の場合に
は、外気サーモスイツチ２３A2のみが開作動し、
これに伴ない第２補助リレー２３2が消磁して、
その常閉接点２３X2−１，２３X2−２が閉じる
のに対し、第１補助リレー２３X1は、第２補助
リレーの常閉接点２３X2−１が閉動作するので
励磁して、その常閉接点２３X1−１が開くので
ある。 Next, the outside temperature is higher than the second set temperature, for example 10
℃, that is, when the first set temperature is, for example, 20℃ or lower, only the outside air thermoswitch 23A2 is opened.
Along with this, the second auxiliary relay 23 2 is demagnetized,
While the normally closed contacts 23X 2 -1 and 23X 2 -2 close, the first auxiliary relay 23X 1 is energized because the normally closed contact 23X 2 -1 of the second auxiliary relay closes. The closed contact 23X 1 -1 opens.
従つて、第２設定温度の５℃以下では駆動して
いた第２室外フアン２４のフアンモータMF02が
停止し、運転中の第１冷凍回路１の第２凝縮器１
２の近くに配置されている第１室外フアン１４の
フアンモータMF01が駆動し、これに伴い第１凝
縮器１２を通過する風量が前記第２室外フアン２
４のみの駆動時よりも増大する。 Therefore, when the second set temperature is 5° C. or lower, the fan motor MF 02 of the second outdoor fan 24 that is being driven stops, and the second condenser 1 of the first refrigeration circuit 1 that is in operation is
The fan motor MF 01 of the first outdoor fan 14 disposed near the second outdoor fan 2 is driven, and the amount of air passing through the first condenser 12 is increased by the second outdoor fan 2.
This increases compared to when only 4 is driven.
更に、外気温度が第１設定温度よりも高くなる
と、前記両外気サーモスイツチ２３A1，２３A2
が開いて前記第１、第２補助リレー２３X1，２
３X2が消磁し、これに伴い第１、第２補助リレ
ー２３X1，２３X2の各常閉接点２３X1−１，２
３X2−１，２３X2−２が閉じるのである。 Furthermore, when the outside air temperature becomes higher than the first set temperature, both the outside air thermoswitches 23A 1 and 23A 2
opens and the first and second auxiliary relays 23X 1 , 2
3X 2 is demagnetized, and as a result, the normally closed contacts 23X 1 -1, 2 of the first and second auxiliary relays 23X 1 and 23X 2
3X 2 -1 and 23X 2 -2 are closed.
従つて、前記第１、第２室外フアンモータ
MF01，MF02の両者が駆動し、これに伴い前記第
１凝縮器１２を通過する風量が前記第１室外フア
ンモータMF01のみの駆動時よりも更に増大する
のである。 Therefore, the first and second outdoor fan motors
Both MF 01 and MF 02 are driven, and accordingly, the amount of air passing through the first condenser 12 is further increased than when only the first outdoor fan motor MF 01 is driven.
これらの場合の風量比は、例えば第１、第２室
外フアンモータMF01，MF02の両者が駆動してい
る時を100％とすると、第１室外フアンモータ
MF01のみのとき40％となり、第２室外フアンモ
ータMF02のみのとき25％となるのである。 The air volume ratio in these cases is, for example, if the time when both the first and second outdoor fan motors MF 01 and MF 02 are driven is 100%, then the air volume ratio when the first outdoor fan motor
When only MF 01 is used, it is 40%, and when only second outdoor fan motor MF 02 is used, it is 25%.
又、前記フアンモータ発停制御回路６における
外気サーモスイツチ２３X2と第２補助リレー２
３X2との間、及び外気サーモスイツチ２３A1と
第２補助リレー２３X2の常閉接点２３X2−１と
の間にそれぞれ前記第２圧縮機モータ発停制御用
の電磁開閉器５２c2の励磁により開動作する常閉
接点52X1−１，５２X1−２を介装し、前記第２
圧縮機モータ発停制御用の電磁開閉器５２c2が励
磁した時、換言すれば第１、第２圧縮機モータ
MC1，MC2の駆動による第１、第２冷凍回路１，
２の運転時には、前記外気サーモスイツチ２３
A1，２３A2のオン・オフとは関係なく前記第１、
第２補助リレー２３X1，２３X2を消磁させて前
記第１、第２室外フアンMF01，MF02を強制的に
駆動させるべく成したのであり、高負荷時におけ
る両冷凍回路１，２の併用運転時に両凝縮器１
２，２２をともに運転するのである。 Also, the outside air thermoswitch 23X2 and the second auxiliary relay 2 in the fan motor start/stop control circuit 6
3X 2 and between the outside air thermoswitch 23A 1 and the normally closed contact 23X 2 -1 of the second auxiliary relay 23X 2 , the electromagnetic switch 52c 2 for controlling the start/stop of the second compressor motor is excited. A normally closed contact 52X 1 -1, 52X 1 -2 which is opened by
When the electromagnetic switch 52c2 for compressor motor start/stop control is excited, in other words, the first and second compressor motors
The first and second refrigeration circuits 1, driven by MC 1 and MC 2 ,
During operation 2, the outside air thermoswitch 23
A 1 , 23 Regardless of whether A 2 is on or off, the first
This is done to forcibly drive the first and second outdoor fans MF 01 and MF 02 by demagnetizing the second auxiliary relays 23X 1 and 23X 2 , and both refrigeration circuits 1 and 2 are used in combination during high loads. Both condensers 1 during operation
2 and 22 are operated together.
（考案の効果）
以上の如く本考案によれば、一方の冷凍回路１
の運転時、外気温度に応じて一方の室外フアン１
４及び他方の室外フアン２４をともに駆動した
り、一方の室外フアン１４又は他方の室外フアン
２４のみを駆動したりできるから、一方の冷凍回
路１の運転時、一方の凝縮器１２へ供給する風量
を高価な可変速型モータを用いることなく段階的
に調節でき、全体として冷凍装置のコストダウン
が図れるし、しかも、高負荷時には外気温度に係
わりなく強制的に両室外フアン１４，２４をとも
に駆動させることができるから、たとえ外気温度
が低くとも冷房負荷が高いときには両凝縮器１
２，２２を有効に作動させることができる。(Effect of the invention) As described above, according to the invention, one of the refrigeration circuits 1
When operating one outdoor fan 1 depending on the outside temperature.
4 and the other outdoor fan 24, or only one outdoor fan 14 or the other outdoor fan 24 can be driven, the amount of air supplied to one condenser 12 when one refrigeration circuit 1 is operating can be adjusted in stages without using an expensive variable speed motor, reducing the cost of the refrigeration system as a whole.Moreover, both outdoor fans 14 and 24 can be forcibly driven at high loads regardless of the outside temperature. Therefore, even if the outside temperature is low, when the cooling load is high, both condensers 1
2 and 22 can be operated effectively.
図面は本考案の１実施例を示し、第１図及び第
２図はその概略断面図、第３図は本考案に係る冷
凍装置の電気回路、第４図は従来例の冷凍装置の
概略説明図である。
１……第１冷凍回路、１２……第１凝縮器、１
４……第１室外フアン、２……第２冷凍回路、２
２……第２凝縮器、２４……第２室外フアン。
The drawings show one embodiment of the present invention, FIGS. 1 and 2 are schematic sectional views thereof, FIG. 3 is an electric circuit of a refrigeration system according to the present invention, and FIG. 4 is a schematic explanation of a conventional refrigeration system. It is a diagram. 1...First refrigeration circuit, 12...First condenser, 1
4...First outdoor fan, 2...Second refrigeration circuit, 2
2...Second condenser, 24...Second outdoor fan.
Claims (1)
び蒸発器１３，２３とを備えた２系統の冷凍回路
１，２をもち、これら冷凍回路１，２による冷凍
運転を独立的に発停可能とすると共に、高負荷時
２系統冷凍回路１，２の併用運転を行い、低負荷
時一方の冷凍回路１の運転を行う冷凍装置であつ
て、前記各凝縮器１２，２２に対応してそれぞれ
室外フアン１４，２４を付設すると共に、前記各
凝縮器１２，２２及び室外フアン１４，２４を、
一方の凝縮器１２が、該凝縮器２に付設するフア
ン１４に対し、他方の凝縮器２２に付設するフア
ン２４より離反するごとく配設する一方、一方の
冷凍回路１の運転時、外気温度が第１設定温度よ
り高いとき、前記室外フアン１４，２４をともに
駆動し、外気温度が前記第１設定温度以下に低下
したとき他方の凝縮器２２の室外フアン２４のみ
を停止し、かつ、外気温度が前記第１設定温度よ
り低い第２設定温度以下に低下したとき一方の凝
縮器１２の室外フアン１４を停止し、他方の凝縮
器２２の室外フアン２４を駆動して前記凝縮器１
２を通る風量制御を行うと共に、併用運転時、外
気温度と係わりなく前記室外フアン１４，２４を
ともに駆動するごとく前記室外フアン１４，２４
を発停制御可能にしたことを特徴とする冷凍装
置。 It has two refrigeration circuits 1 and 2 equipped with compressors 11 and 21, air-cooled condensers 12 and 22, and evaporators 13 and 23, and the refrigeration operation of these refrigeration circuits 1 and 2 can be started and stopped independently. The refrigeration system also operates the two refrigeration circuits 1 and 2 in combination during high loads, and operates one refrigeration circuit 1 during low loads, with respective condensers 12 and 22 corresponding to each other. In addition to installing outdoor fans 14, 24, each of the condensers 12, 22 and outdoor fans 14, 24,
One condenser 12 is arranged so as to be farther away from the fan 14 attached to the other condenser 22 than the fan 24 attached to the other condenser 22. When the temperature is higher than the first set temperature, both the outdoor fans 14 and 24 are driven, and when the outside air temperature falls below the first set temperature, only the outdoor fan 24 of the other condenser 22 is stopped, and the outside air temperature When the temperature drops to a second set temperature that is lower than the first set temperature, the outdoor fan 14 of one condenser 12 is stopped, and the outdoor fan 24 of the other condenser 22 is driven to reduce the temperature of the condenser 1.
The outdoor fans 14 and 24 control the air flow rate through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the air flow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through the airflow through a
A refrigeration system characterized by being able to control starting and stopping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984121579U JPS6136273U (en) | 1984-08-07 | 1984-08-07 | Refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984121579U JPS6136273U (en) | 1984-08-07 | 1984-08-07 | Refrigeration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6136273U JPS6136273U (en) | 1986-03-06 |
| JPH0245726Y2 true JPH0245726Y2 (en) | 1990-12-04 |
Family
ID=30680358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984121579U Granted JPS6136273U (en) | 1984-08-07 | 1984-08-07 | Refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6136273U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5493813B2 (en) * | 2009-12-16 | 2014-05-14 | 三菱電機株式会社 | Outdoor unit, air conditioner, and operation method of air conditioner |
| WO2015098157A1 (en) * | 2013-12-26 | 2015-07-02 | 三菱電機株式会社 | Outdoor unit and refrigeration cycle device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52137340U (en) * | 1976-04-14 | 1977-10-18 | ||
| JPS5775371U (en) * | 1980-10-27 | 1982-05-10 | ||
| JPS58183464U (en) * | 1982-05-28 | 1983-12-07 | 株式会社東芝 | air conditioner |
-
1984
- 1984-08-07 JP JP1984121579U patent/JPS6136273U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6136273U (en) | 1986-03-06 |
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