JPH08193757A - Freezer device - Google Patents

Freezer device

Info

Publication number
JPH08193757A
JPH08193757A JP7006301A JP630195A JPH08193757A JP H08193757 A JPH08193757 A JP H08193757A JP 7006301 A JP7006301 A JP 7006301A JP 630195 A JP630195 A JP 630195A JP H08193757 A JPH08193757 A JP H08193757A
Authority
JP
Japan
Prior art keywords
condenser
refrigerant
pipe
condensor
flow pipe
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
Application number
JP7006301A
Other languages
Japanese (ja)
Inventor
Shunji Komatsu
俊二 小松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanden Corp
Original Assignee
Sanden Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanden Corp filed Critical Sanden Corp
Priority to JP7006301A priority Critical patent/JPH08193757A/en
Publication of JPH08193757A publication Critical patent/JPH08193757A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0403—Refrigeration circuit bypassing means for the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/027—Condenser control arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

PURPOSE: To provide a freezer device capable of keeping a normal cooling capability without stopping its operation even in the case that a condensing temperature of a condensor is abnormally increased. CONSTITUTION: In the case that a temperature of refrigerant detected by a temperature sensor 8 is less than a predetermined value, a first valve 6 is closed and a second valve 7 is opened. With such an operation as above, refrigerant within a condensor 3 flows through a part of a refrigerant flowing pipe 3a and a bypassing pipe 3b and then condensation is carried out only at a part of the refrigerant flowing pipe 3a. In addition, when a detected temperature exceeds a predetermined value, the first valve 6 is opened and the second valve 7 is closed, and further a fan motor 5a for a blower 5 is rotated at a high speed. With such an arrangement as above, since the refrigerant in the condensor 3 does not flow through the bypass pipe 3b, but flows toward a terminal end of the refrigerant flowing pipe 3a, condensation is carried out in an entire refrigerant flow passage 3a and then a condensing capability of the condensor 3 is improved. At that time, since the fan motor 5a is rotated at a high speed to increase an amount of blowing air directed toward the condensor 3, resulting in that a cooling effect of the condensor 3 is increased.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は冷凍・冷蔵ショーケー
ス、自動販売機または空気調和装置等に用いられる冷凍
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating apparatus used for a freezing / refrigerating showcase, a vending machine, an air conditioner, or the like.

【０００２】[0002]

【従来の技術】従来、冷凍・冷蔵ショーケース等に用い
られる冷凍装置は、圧縮機、蒸発器、凝縮器及び膨張手
段を備え、これらに冷媒を循環させることにより冷凍サ
イクルを構成している。即ち、圧縮機から吐出した冷媒
は凝縮器で凝縮し、膨張手段を介して蒸発器に流入した
後、蒸発器で蒸発して圧縮機に吸入される。2. Description of the Related Art Conventionally, a refrigerating apparatus used for a refrigerating / refrigerating showcase or the like has a compressor, an evaporator, a condenser and an expanding means, and a refrigerating cycle is constituted by circulating a refrigerant through these. That is, the refrigerant discharged from the compressor is condensed in the condenser, flows into the evaporator through the expansion means, is evaporated in the evaporator, and is sucked into the compressor.

【０００３】ところで、前記凝縮器では専用の送風機に
より冷却されて内部の冷媒が凝縮するようになっている
が、凝縮器用のフィルタまたは凝縮器自体の目詰まりに
よって凝縮器の凝縮能力が低下すると、凝縮温度が上昇
して冷凍サイクルの冷却能力を低下させたり、場合によ
っては圧縮機を故障させる原因にもなっていた。そこ
で、従来では凝縮器に温度センサまたは圧力センサ等を
取付けて凝縮温度を管理し、凝縮温度が所定の上限値よ
りも上昇した場合には警告灯を点灯させるなどして異常
を知らせるようにしていた。By the way, in the condenser, the refrigerant inside is cooled by a dedicated blower to condense the internal refrigerant. However, if the filter for the condenser or the condenser itself is clogged, the condensing capacity of the condenser is lowered. It has also been a cause of increasing the condensing temperature and lowering the cooling capacity of the refrigeration cycle, and in some cases causing the compressor to malfunction. Therefore, conventionally, a temperature sensor or a pressure sensor is attached to the condenser to control the condensing temperature, and when the condensing temperature rises above a predetermined upper limit, a warning light is turned on to notify the abnormality. It was

【０００４】[0004]

【発明が解決しようとする課題】前述のように凝縮器の
凝縮能力が低下した場合、警告灯等によって凝縮能力の
低下を知らせても、異常を解消するためには冷凍装置の
運転を一時的に中止しなければならないが、店舗に設置
した冷凍・冷蔵ショーケースや自動販売機等のように冷
凍装置が常に稼働している状況では、一時的でも運転を
中止することは極めて困難であった。When the condensation capacity of the condenser is lowered as described above, the operation of the refrigeration system is temporarily stopped in order to eliminate the abnormality even if the reduction of the condensation capacity is notified by a warning light or the like. However, it was extremely difficult to suspend the operation even temporarily even when the refrigeration system is constantly operating, such as a freezer / refrigerator showcase installed in a store or a vending machine. .

【０００５】本発明は前記問題点に鑑みてなされたもの
であり、その目的とするところは、凝縮器の凝縮温度が
異常上昇した場合でも、運転を停止せずに通常の冷却能
力を維持することのできる冷凍装置を提供することにあ
る。The present invention has been made in view of the above problems, and an object thereof is to maintain a normal cooling capacity without stopping the operation even when the condensation temperature of the condenser rises abnormally. It is to provide a refrigerating device capable of performing the above.

【０００６】[0006]

【課題を解決するための手段】本発明は前記目的を達成
するために、請求項１では、圧縮機、蒸発器、凝縮器及
び膨張手段によって冷凍サイクルを構成し、前記凝縮器
を冷媒の流通方向に沿って連続した熱交換用の冷媒流通
管を有する熱交換器によって構成した冷凍装置におい
て、前記凝縮器内の冷媒が冷媒流通管の一部のみを流通
するように冷媒流通管の所定位置と凝縮器の上流側また
は下流側とを連通するバイパス管と、凝縮器内の冷媒の
流れを冷媒流通管の全体を流通する経路と冷媒流通管の
一部及びバイパス管を流通する経路とに択一的に切換え
る切換手段と、凝縮器の凝縮温度が所定値以下のときは
凝縮器内の冷媒を冷媒流通管の一部及びバイパス管に流
通させ、凝縮器の凝縮温度が所定値を越えたときは凝縮
器内の冷媒を冷媒流通管の全体に流通させるように前記
切換手段を制御する制御手段とを備えている。In order to achieve the above-mentioned object, the present invention provides a refrigeration cycle by a compressor, an evaporator, a condenser and an expansion means in claim 1, and the refrigerant flows through the condenser. In a refrigerating apparatus constituted by a heat exchanger having a refrigerant flow pipe for continuous heat exchange along a direction, a predetermined position of the refrigerant flow pipe so that the refrigerant in the condenser flows through only a part of the refrigerant flow pipe. And a bypass pipe that communicates with the upstream side or the downstream side of the condenser, a flow path of the refrigerant in the condenser through the entire refrigerant flow pipe, and a part of the refrigerant flow pipe and a path through the bypass pipe. Alternate switching means, and when the condensation temperature of the condenser is lower than a predetermined value, the refrigerant in the condenser is caused to flow through a part of the refrigerant flow pipe and the bypass pipe so that the condensation temperature of the condenser exceeds the predetermined value. The refrigerant inside the condenser And a control means for controlling said switching means so as to flow across the tube.

【０００７】また、請求項２では、請求項１記載の冷凍
装置において、前記凝縮器内の冷媒が冷媒流通管の全体
を流通するときは凝縮器への送風量を増加させる送風機
を備えている。According to a second aspect of the present invention, in the refrigerating apparatus of the first aspect, there is provided a blower for increasing the amount of air blown to the condenser when the refrigerant in the condenser flows through the entire refrigerant flow pipe. .

【０００８】[0008]

【作用】請求項１の冷凍装置によれば、凝縮器の凝縮温
度が所定値以下のときは、凝縮器内の冷媒が冷媒流通管
の一部及びバイパス管を流通し、冷媒流通管の一部のみ
で凝縮が行われる。また、凝縮器の凝縮温度が所定値を
越えたときは、凝縮器内の冷媒が冷媒流通管の全体を流
通することから、冷媒流通管の全体で凝縮が行われ、凝
縮器の凝縮能力が向上する。According to the refrigerating apparatus of claim 1, when the condensation temperature of the condenser is equal to or lower than a predetermined value, the refrigerant in the condenser flows through a part of the refrigerant flow pipe and the bypass pipe, and Condensation takes place only in one part. Further, when the condensation temperature of the condenser exceeds a predetermined value, the refrigerant in the condenser flows through the entire refrigerant flow pipe, so that the entire refrigerant flow pipe is condensed, and the condensation capacity of the condenser is improves.

【０００９】また、請求項２の冷凍装置によれば、請求
項１の作用に加え、凝縮器内の冷媒が冷媒流通管の全体
を流通するときは凝縮器への送風量が増加することか
ら、凝縮器の冷却効果が高まる。Further, according to the refrigerating apparatus of claim 2, in addition to the operation of claim 1, when the refrigerant in the condenser flows through the entire refrigerant flow pipe, the amount of air blown to the condenser increases. , The cooling effect of the condenser is enhanced.

【００１０】[0010]

【実施例】図１乃至図３は本発明の一実施例を示すもの
で、図１は冷凍装置の概略構成図、図２は凝縮器の拡大
図である。1 to 3 show an embodiment of the present invention. FIG. 1 is a schematic diagram of a refrigerating apparatus, and FIG. 2 is an enlarged view of a condenser.

【００１１】この冷凍装置は、圧縮機１、蒸発器２、凝
縮器３及び膨張弁４を備え、圧縮機１の冷媒吐出側には
凝縮器３の一端が、圧縮機１の冷媒吸入側には蒸発器２
の一端が、凝縮器３の他端には膨張弁４を介して蒸発器
２の他端がそれぞれ接続されて冷凍サイクルを構成して
いる。This refrigeration system comprises a compressor 1, an evaporator 2, a condenser 3 and an expansion valve 4, one end of the condenser 3 on the refrigerant discharge side of the compressor 1 and the refrigerant suction side of the compressor 1. Is the evaporator 2
, And the other end of the evaporator 2 is connected to the other end of the condenser 3 via the expansion valve 4 to form a refrigeration cycle.

【００１２】凝縮器３は、蛇行状に屈曲した多数の平行
な流路を有する熱交換用の冷媒流通管３ａからなる熱交
換器によって構成され、送風機５によって冷却されるよ
うになっている。凝縮器３は冷媒流通管３ａの終端より
も上流側から分岐するバイパス管３ｂを備え、バイパス
管３ｂは凝縮器３の下流側の回路に接続されている。ま
た、バイパス管３ｂとの分岐点の下流側には冷媒流通管
３ａを開閉する第１バルブ６と、バイパス管３ｂを開閉
する第２バルブ７、即ち冷媒の流れを切換える切換手段
が設けられ、バイパス管３ｂの合流点の下流側には冷媒
の温度を検出する温度センサ８が設けられている。ま
た、各バルブ６，７、温度センサ８及び送風機５のファ
ンモータ５ａはマイクロコンピュータ構成の制御部９に
接続され、ファンモータ５ａの回転は図示しない駆動回
路によって低速と高速に切換えられるようになってい
る。The condenser 3 is constituted by a heat exchanger composed of a refrigerant flow pipe 3a for heat exchange having a large number of parallel flow paths bent in a meandering manner, and is cooled by a blower 5. The condenser 3 includes a bypass pipe 3b branched from the upstream side of the end of the refrigerant flow pipe 3a, and the bypass pipe 3b is connected to a circuit on the downstream side of the condenser 3. A first valve 6 that opens and closes the refrigerant flow pipe 3a and a second valve 7 that opens and closes the bypass pipe 3b, that is, a switching unit that switches the flow of the refrigerant are provided on the downstream side of the branch point with the bypass pipe 3b. A temperature sensor 8 for detecting the temperature of the refrigerant is provided on the downstream side of the confluence of the bypass pipe 3b. The valves 6 and 7, the temperature sensor 8 and the fan motor 5a of the blower 5 are connected to a control unit 9 of a microcomputer configuration, and the rotation of the fan motor 5a can be switched between low speed and high speed by a drive circuit (not shown). ing.

【００１３】以上のように構成された冷凍装置では、圧
縮機１が作動すると冷媒が図１の実線矢印で示すように
循環し、蒸発器２内に低温低圧の冷媒が送り込まれて外
部の空気等が冷却される。また、凝縮器３内には高温高
圧の冷媒が送り込まれ、送風機５によって冷却されて内
部の冷媒が凝縮する。In the refrigeration system constructed as described above, when the compressor 1 is operated, the refrigerant circulates as shown by the solid arrow in FIG. 1, and the low temperature and low pressure refrigerant is sent into the evaporator 2 to external air. Etc. are cooled. Further, a high-temperature and high-pressure refrigerant is sent into the condenser 3 and is cooled by the blower 5 to condense the refrigerant inside.

【００１４】ここで、図３に示すフローチャートを参照
して制御部９の動作について説明する。まず、冷凍装置
の運転が開始されると（Ｓ１）、第１バルブ６を閉じて
（Ｓ２）、第２バルブ７を開き（Ｓ３）、送風機５のフ
ァンモータ５ａを低速で回転させる（Ｓ４）。これによ
り、凝縮器３内の冷媒は図中実線で示すように冷媒流通
管３ａの途中からバイパス管３ｂに流入し、凝縮器３の
下流側の回路に流れ込む。即ち、凝縮器３では冷媒流通
管３ａの一部（入口からバイパス管３ｂへの分岐点ま
で）で凝縮が行われる。尚、この場合の凝縮能力は冷凍
装置の正常な運転に応じた設定になっている。次に、送
風機５用のフィルタまたは凝縮器３自体の目詰まりなど
の異常が生じて凝縮器３の冷却効果が低下し、温度セン
サ８によって検出された冷媒の温度Ｔが所定の上限値Ｔ
1 を越えたときは（Ｓ５）、第１バルブ６を開いて（Ｓ
６）、第２バルブ７を閉じ（Ｓ７）、送風機５のファン
モータ５ａを高速で回転させる（Ｓ８）。これにより、
凝縮器３内の冷媒が図中一点鎖線で示すようにバイパス
管３ｂを通らず冷媒流通管３ａの終端側へ流通すること
から、冷媒流通管３ａの全体で凝縮が行われ、凝縮器３
の凝縮能力が向上する。その際、ファンモータ５ａの高
速回転によって凝縮器３への送風量が増加することか
ら、凝縮器３の冷却効果が高まる。この後、運転継続中
に異常が解消されて冷媒の温度Ｔが上限値Ｔ1 以下にな
ったときは（Ｓ９）、ステップＳ２に移行して各バルブ
６，７及び送風機５を初期の状態（ステップＳ２，Ｓ
３，Ｓ４）に戻す。尚、異常時の状態（ステップＳ６，
Ｓ７，Ｓ８）に切換える際、同時に警告灯等の警報手段
を作動させるようにすれば、異常解消への迅速な処置に
対してより効果的である。Here, the operation of the control section 9 will be described with reference to the flow chart shown in FIG. First, when the operation of the refrigeration system is started (S1), the first valve 6 is closed (S2), the second valve 7 is opened (S3), and the fan motor 5a of the blower 5 is rotated at a low speed (S4). . As a result, the refrigerant in the condenser 3 flows into the bypass pipe 3b from the middle of the refrigerant flow pipe 3a as shown by the solid line in the figure, and flows into the circuit on the downstream side of the condenser 3. That is, in the condenser 3, the part of the refrigerant flow pipe 3a (from the inlet to the branch point to the bypass pipe 3b) is condensed. The condensing capacity in this case is set according to the normal operation of the refrigeration system. Next, an abnormality such as clogging of the filter for the blower 5 or the condenser 3 itself occurs and the cooling effect of the condenser 3 is reduced, and the temperature T of the refrigerant detected by the temperature sensor 8 is a predetermined upper limit value T.
When it exceeds 1 (S5), the first valve 6 is opened (S5).
6), the second valve 7 is closed (S7), and the fan motor 5a of the blower 5 is rotated at high speed (S8). This allows
Since the refrigerant in the condenser 3 flows to the terminal side of the refrigerant flow pipe 3a without passing through the bypass pipe 3b as shown by the alternate long and short dash line in the figure, the entire refrigerant flow pipe 3a is condensed, and the condenser 3
The condensing ability of is improved. At this time, the amount of air blown to the condenser 3 increases due to the high speed rotation of the fan motor 5a, so that the cooling effect of the condenser 3 is enhanced. After that, when the abnormality is eliminated and the refrigerant temperature T becomes equal to or lower than the upper limit value T1 during the continuous operation (S9), the process proceeds to step S2, and the valves 6 and 7 and the blower 5 are in the initial state (step S2, S
3, S4). The state at the time of abnormality (step S6)
If the warning means such as a warning light is activated at the same time when switching to S7, S8), it is more effective for a prompt action for eliminating the abnormality.

【００１５】このように、本実施例の冷凍装置によれ
ば、運転が正常なときは凝縮器３の冷媒流通管３ａの一
部のみで冷媒の凝縮を行い、凝縮器３の凝縮温度が異常
上昇したときは凝縮器３内の冷媒を冷媒流通管３ａの全
体に流通させて凝縮能力を向上させるようにしたので、
凝縮器の凝縮能力が低下した場合でも、運転を停止せず
に通常の冷却能力を維持することができ、店舗に設置し
た冷凍・冷蔵ショーケースや自動販売機等のように冷凍
装置が常に稼働している場合には極めて有利である。ま
た、凝縮器３内の冷媒を冷媒流通管３ａの全体に流通さ
せる際、凝縮器３への送風量を増加させて凝縮器３の冷
却効果を高めるようにしたので、凝縮能力をより向上さ
せることができる。As described above, according to the refrigerating apparatus of this embodiment, when the operation is normal, the refrigerant is condensed only in a part of the refrigerant flow pipe 3a of the condenser 3, and the condensation temperature of the condenser 3 is abnormal. When the temperature rises, the refrigerant in the condenser 3 is caused to flow through the entire refrigerant flow pipe 3a to improve the condensing capacity.
Even when the condenser's condensing capacity decreases, the normal cooling capacity can be maintained without stopping the operation, and the refrigerating equipment such as the freezing / refrigerating showcase installed in the store and the vending machine always operate. If so, it is extremely advantageous. Further, when the refrigerant in the condenser 3 is circulated in the entire refrigerant flow pipe 3a, the amount of air blown to the condenser 3 is increased to enhance the cooling effect of the condenser 3, so that the condensing capacity is further improved. be able to.

【００１６】尚、前記実施例では冷媒流通管３ａから分
岐するバイパス管３ｂを凝縮器３の下流側に接続して冷
媒流通管３ａの終端側を異常時の予備として使用するよ
うにしたが、バイパス管３ｂを凝縮器３の上流側に接続
して冷媒流通管３ａの基端側を予備として使用するよう
に構成してもよい。また、前記実施例では凝縮器３の凝
縮温度の上昇を凝縮器３の下流側に設けた温度センサ８
の検出値によって判別するようにしたが、温度センサ８
の代わりに圧力センサを用いたり、或いは凝縮器３の周
囲を流通する空気の温度を検出するようにしてもよい。In the above-described embodiment, the bypass pipe 3b branched from the refrigerant flow pipe 3a is connected to the downstream side of the condenser 3 so that the terminal side of the refrigerant flow pipe 3a is used as a spare in case of an abnormality. The bypass pipe 3b may be connected to the upstream side of the condenser 3 so that the base end side of the refrigerant flow pipe 3a is used as a spare. In addition, in the above-described embodiment, the temperature sensor 8 provided on the downstream side of the condenser 3 raises the condensing temperature of the condenser 3.
The temperature sensor 8
Alternatively, a pressure sensor may be used, or the temperature of the air flowing around the condenser 3 may be detected.

【００１７】[0017]

【発明の効果】以上説明したように、請求項１の冷凍装
置によれば、凝縮器の凝縮温度が異常上昇した場合で
も、運転を停止せずに通常の冷却能力を維持することが
できるので、店舗に設置した冷凍・冷蔵ショーケースや
自動販売機等のように冷凍装置が常に稼働している場合
には極めて有利である。As described above, according to the refrigerating apparatus of the first aspect, the normal cooling capacity can be maintained without stopping the operation even when the condensation temperature of the condenser rises abnormally. , It is extremely advantageous when the refrigeration system is always operating, such as a freezing / refrigerating showcase installed in a store or a vending machine.

【００１８】また、請求項２の冷凍装置によれば、請求
項１の効果に加え、凝縮器内の冷媒を冷媒流通管の全体
に流通させる際、凝縮器の冷却効果を高めることができ
るので、凝縮能力をより向上させることができる。According to the refrigerating apparatus of the second aspect, in addition to the effect of the first aspect, the cooling effect of the condenser can be enhanced when the refrigerant in the condenser is circulated in the entire refrigerant flow pipe. , The condensing ability can be further improved.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例を示す冷凍装置の概略構成図FIG. 1 is a schematic configuration diagram of a refrigeration system showing an embodiment of the present invention.

【図２】凝縮器の拡大図[Figure 2] Enlarged view of the condenser

【図３】制御部の動作を示すフローチャートFIG. 3 is a flowchart showing the operation of the control unit.

【符号の説明】[Explanation of symbols]

１…圧縮機、２…蒸発器、３…凝縮器、３ａ…冷媒流通
管、３ｂ…バイパス管、５…送風機、６…第１バルブ、
７…第２バルブ、８…温度センサ、９…制御部。DESCRIPTION OF SYMBOLS 1 ... Compressor, 2 ... Evaporator, 3 ... Condenser, 3a ... Refrigerant flow pipe, 3b ... Bypass pipe, 5 ... Blower, 6 ... 1st valve,
7 ... 2nd valve, 8 ... Temperature sensor, 9 ... Control part.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 圧縮機、蒸発器、凝縮器及び膨張手段に
よって冷凍サイクルを構成し、前記凝縮器を冷媒の流通
方向に沿って連続した熱交換用の冷媒流通管を有する熱
交換器によって構成した冷凍装置において、 前記凝縮器内の冷媒が冷媒流通管の一部のみを流通する
ように冷媒流通管の所定位置と凝縮器の上流側または下
流側とを連通するバイパス管と、 凝縮器内の冷媒の流れを冷媒流通管の全体を流通する経
路と冷媒流通管の一部及びバイパス管を流通する経路と
に択一的に切換える切換手段と、 凝縮器の凝縮温度が所定値以下のときは凝縮器内の冷媒
を冷媒流通管の一部及びバイパス管に流通させ、凝縮器
の凝縮温度が所定値を越えたときは凝縮器内の冷媒を冷
媒流通管の全体に流通させるように前記切換手段を制御
する制御手段とを備えたことを特徴とする冷凍装置。1. A refrigeration cycle is constituted by a compressor, an evaporator, a condenser, and an expansion means, and the condenser is constituted by a heat exchanger having a refrigerant circulation pipe for heat exchange that is continuous along a refrigerant circulation direction. In the refrigerating apparatus, the bypass pipe communicating the predetermined position of the refrigerant flow pipe and the upstream side or the downstream side of the condenser so that the refrigerant in the condenser flows only in a part of the refrigerant flow pipe, and the inside of the condenser When the condensing temperature of the condenser is less than or equal to a predetermined value The refrigerant in the condenser is circulated through a part of the refrigerant flow pipe and the bypass pipe, and when the condensation temperature of the condenser exceeds a predetermined value, the refrigerant in the condenser is circulated throughout the refrigerant flow pipe. Control means for controlling the switching means A refrigerating device characterized by being provided. 【請求項２】 前記凝縮器内の冷媒が冷媒流通管の全体
を流通するときは凝縮器への送風量を増加させる送風機
を備えたことを特徴とする請求項１記載の冷凍装置。2. The refrigerating apparatus according to claim 1, further comprising a blower for increasing the amount of air blown to the condenser when the refrigerant in the condenser flows through the entire refrigerant flow pipe.
JP7006301A 1995-01-19 1995-01-19 Freezer device Pending JPH08193757A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7006301A JPH08193757A (en) 1995-01-19 1995-01-19 Freezer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7006301A JPH08193757A (en) 1995-01-19 1995-01-19 Freezer device

Publications (1)

Publication Number Publication Date
JPH08193757A true JPH08193757A (en) 1996-07-30

Family

ID=11634560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7006301A Pending JPH08193757A (en) 1995-01-19 1995-01-19 Freezer device

Country Status (1)

Country Link
JP (1) JPH08193757A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001343177A (en) * 2000-05-31 2001-12-14 Fuji Electric Co Ltd Fault diagnosing method, fault diagnosing device and recording medium
US20170030621A1 (en) * 2015-07-30 2017-02-02 Lennox Industries Inc. Low ambient cooling scheme and control
CN107300266A (en) * 2017-06-12 2017-10-27 广东美的制冷设备有限公司 Air-conditioning system, the control method of air-conditioning system
CN114543414A (en) * 2020-11-27 2022-05-27 海信（山东）冰箱有限公司 Refrigerator control method and refrigerator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001343177A (en) * 2000-05-31 2001-12-14 Fuji Electric Co Ltd Fault diagnosing method, fault diagnosing device and recording medium
JP4572447B2 (en) * 2000-05-31 2010-11-04 富士電機リテイルシステムズ株式会社 Failure diagnosis method, failure diagnosis device, and recording medium
US20170030621A1 (en) * 2015-07-30 2017-02-02 Lennox Industries Inc. Low ambient cooling scheme and control
CN107300266A (en) * 2017-06-12 2017-10-27 广东美的制冷设备有限公司 Air-conditioning system, the control method of air-conditioning system
CN107300266B (en) * 2017-06-12 2019-10-15 广东美的制冷设备有限公司 Air-conditioning system, the control method of air-conditioning system
CN114543414A (en) * 2020-11-27 2022-05-27 海信（山东）冰箱有限公司 Refrigerator control method and refrigerator
CN114543414B (en) * 2020-11-27 2024-01-16 海信冰箱有限公司 Refrigerator control method and refrigerator

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