JPS62178854A - Refrigerator - Google Patents
RefrigeratorInfo
- Publication number
- JPS62178854A JPS62178854A JP2062286A JP2062286A JPS62178854A JP S62178854 A JPS62178854 A JP S62178854A JP 2062286 A JP2062286 A JP 2062286A JP 2062286 A JP2062286 A JP 2062286A JP S62178854 A JPS62178854 A JP S62178854A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- condensing pressure
- air
- regulating valve
- pressure regulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 claims description 72
- 239000007788 liquid Substances 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 8
- 238000010257 thawing Methods 0.000 claims description 7
- 238000007710 freezing Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 description 16
- 230000005494 condensation Effects 0.000 description 9
- 239000003570 air Substances 0.000 description 8
- 238000009833 condensation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
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
- 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
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、冷凍運転時に冷却能力の向上と所要電力の
低減を期するようにした冷凍装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refrigeration system designed to improve cooling capacity and reduce required power during refrigeration operation.
第２図はたとえば、［サギノミャ冷凍冷房用自動制御機
器カタログＰ２０Ｊ （１９８１年１月１０日発行）
に示された従来の冷凍装置の要部冷媒系統図である。Figure 2 shows, for example, [Saginomya Refrigeration and Cooling Automatic Control Equipment Catalog P20J (published January 10, 1981)
FIG. 2 is a refrigerant system diagram of main parts of the conventional refrigeration system shown in FIG.
この第２図において、１は冷媒圧縮機、２は空冷凝縮器
であり、冷媒圧縮機１と空冷凝縮器２は冷媒ガス管３で
接続されており、この空冷凝縮器２に冷媒液出口管４が
接続されている。In this figure, 1 is a refrigerant compressor, 2 is an air-cooled condenser, and the refrigerant compressor 1 and the air-cooled condenser 2 are connected by a refrigerant gas pipe 3. 4 is connected.
この冷媒液出口管４に＠縮圧力調整弁５が接続され、こ
の凝縮圧力調整弁５は冷媒ガスバイパス管６を介して、
冷媒ガス管３に接続されているとともに、冷媒配管８を
介して受液器７に接続されている。A @condensation pressure regulation valve 5 is connected to this refrigerant liquid outlet pipe 4, and this condensation pressure regulation valve 5 is connected via a refrigerant gas bypass pipe 6.
It is connected to the refrigerant gas pipe 3 and also to the liquid receiver 7 via the refrigerant pipe 8 .
なお、１３は空冷凝縮器２に複数個配設された送風機で
ある。Note that 13 is a plurality of blowers arranged in the air-cooled condenser 2.
次に、動作について説明する。冷媒圧縮機１より吐出さ
れた冷媒ガスは冷媒ガス管３を通り、空冷凝縮器２へと
入る。この空冷凝縮器２において、送風機１３によって
送風される空気と熱交換することにより、冷媒ガスは凝
縮液化し、冷媒液出口管４、凝縮圧力調整弁５、冷媒配
管８を通り、受液器７へと入る。Next, the operation will be explained. Refrigerant gas discharged from the refrigerant compressor 1 passes through the refrigerant gas pipe 3 and enters the air-cooled condenser 2. In this air-cooled condenser 2, the refrigerant gas is condensed and liquefied by exchanging heat with the air blown by the blower 13, passes through the refrigerant liquid outlet pipe 4, the condensation pressure regulating valve 5, and the refrigerant pipe 8, and then passes through the liquid receiver 7. Enter.
凝縮圧力が凝縮圧力調整弁５の設定圧力よりも低い場合
は、凝縮圧力調整弁５が内部に有する冷媒液の通路を塞
ぎ、空冷凝縮器２の冷却管内へ冷媒液を滞溜させ、凝縮
表面積を滅じ、凝縮圧力を凝縮圧力調整弁５へ設定圧力
まで上昇させ、そこで再び凝縮圧力調整弁５は冷媒液通
路を開き、冷媒液を受液器７へ送液する。When the condensing pressure is lower than the set pressure of the condensing pressure regulating valve 5, the condensing pressure regulating valve 5 closes the refrigerant liquid passage inside, causing the refrigerant liquid to accumulate in the cooling pipe of the air-cooled condenser 2, and reducing the condensing surface area. The condensing pressure is increased to the set pressure in the condensing pressure regulating valve 5, and then the condensing pressure regulating valve 5 again opens the refrigerant liquid passage and sends the refrigerant liquid to the liquid receiver 7.
また、凝縮圧力調整弁５は冷媒液通路を閉じる際、同時
に冷媒ガスのバイパス通路６を開く。Furthermore, when the condensing pressure regulating valve 5 closes the refrigerant liquid passage, it simultaneously opens the refrigerant gas bypass passage 6.
これにより、冷媒圧縮機１より吐出された冷媒ガスの一
部は冷媒ガスバイパス管６、凝縮圧力調整弁５および冷
媒配管８を通り、受液器７へ入り、受液器７内の圧力を
上昇させる。As a result, a part of the refrigerant gas discharged from the refrigerant compressor 1 passes through the refrigerant gas bypass pipe 6, the condensation pressure regulating valve 5, and the refrigerant pipe 8, enters the liquid receiver 7, and reduces the pressure inside the liquid receiver 7. raise.
従来の冷凍装置は以上のように構成されているので、凝
縮圧力調整弁５は、冷凍装置が冷凍運転時でも、ホット
ガスバイパスによる図示しない冷却器の除霜運転時でも
、凝縮圧力調整弁５の設定圧力以上になるように、凝縮
圧力を制御する。Since the conventional refrigeration system is configured as described above, the condensation pressure adjustment valve 5 is operated even when the refrigeration system is in a freezing operation or when a cooler (not shown) is in a defrosting operation using a hot gas bypass. Control the condensing pressure so that it exceeds the set pressure.
ところで、凝縮圧力調整弁５の設定圧力はホットガスバ
イパスによる除霜運転のことを考慮して高めに設定する
ため、冷凍運転時には必要以上に凝縮圧力が高くなるこ
ととなり、冷却能力の低下、所要動力の増大を招くなど
の問題があった。By the way, since the set pressure of the condensing pressure regulating valve 5 is set high considering the defrosting operation using hot gas bypass, the condensing pressure becomes higher than necessary during the freezing operation, resulting in a decrease in the cooling capacity and the required There were problems such as an increase in power.
この発明は、かかる問題点を解決するためになされたも
ので、冷凍運転と除霜運転のそれぞれの運転状態に応じ
た凝縮圧力の制御を行うことができる冷凍装置を得るこ
とを目的とする。The present invention was made to solve this problem, and an object of the present invention is to provide a refrigeration system that can control condensation pressure according to the respective operating states of refrigeration operation and defrosting operation.
この発明に係る冷凍装置は、冷媒圧縮機の冷媒吐出ガス
管と凝縮圧力調整弁とを接ぐ冷媒ガスバイパス管の途中
に電磁弁を設けるとともに、凝縮圧力調整弁を電磁弁を
介してバイパスして冷媒配管に連通ずる冷媒液バイパス
管を設けるとともに空気凝縮器が設置しである周囲の空
気温度を検出する温度スイッチを設けたものである。The refrigeration system according to the present invention provides a solenoid valve in the middle of a refrigerant gas bypass pipe that connects a refrigerant discharge gas pipe of a refrigerant compressor and a condensing pressure regulating valve, and also bypasses the condensing pressure regulating valve via the solenoid valve. A refrigerant liquid bypass pipe communicating with the refrigerant pipe is provided, an air condenser is installed, and a temperature switch is provided to detect the ambient air temperature.
この発明において、冷媒ガスバイパス配管途中に設けた
電磁弁と凝縮圧力調整弁をバイパスする冷媒液バイパス
配管により、必要に応じて凝縮圧力調整弁をバイパスす
る冷媒回路を形成し、凝縮圧力調整弁の設定圧力よりも
低い凝縮圧力で冷凍装置を冷凍運転するとともに、空冷
凝縮器の周囲空気温度を温度スイッチにより検出し、空
気温度が温度スイッチの設定温度より低い場合には空気
凝縮器の送風機の一部を停止して凝縮圧力が低下しすぎ
ないように運転する。In this invention, a refrigerant circuit that bypasses the condensing pressure regulating valve as necessary is formed by a solenoid valve provided in the middle of the refrigerant gas bypass piping and a refrigerant liquid bypass piping that bypasses the condensing pressure regulating valve. In addition to operating the refrigeration equipment at a condensing pressure lower than the set pressure, the ambient air temperature of the air-cooled condenser is detected by a temperature switch, and if the air temperature is lower than the set temperature of the temperature switch, one of the blowers of the air condenser is Stop the section and operate to prevent the condensing pressure from dropping too much.
〔実施イク１〕
以下、この発明の冷凍装置の実施例について図面に基づ
き説明する。第１図はその一実施例の要部の冷媒系統図
である。この第１図において、重複を避けるために、構
成の説明に際し、第２図と同一部分には同一符号を付す
るのみにとどめ、第２図とは異なる部分を重点的に述べ
る。[Embodiment 1] Hereinafter, embodiments of the refrigeration apparatus of the present invention will be described based on the drawings. FIG. 1 is a refrigerant system diagram of the main parts of one embodiment. In FIG. 1, in order to avoid duplication, when explaining the configuration, the same parts as those in FIG. 2 are given the same reference numerals, and parts different from those in FIG. 2 are mainly described.
この第２図を第１図と比較しても明らかなように、第１
図では、符号１〜８で示す部分は第２図と同様であり、
符号９以降で示す部分が新たに付加された部分である。As is clear from comparing this Figure 2 with Figure 1,
In the figure, parts indicated by numerals 1 to 8 are the same as in Fig. 2,
The parts indicated by reference numeral 9 and after are newly added parts.
すなわち、冷媒ガスバイパス管６の途中に第１の電磁弁
９が設けられているとともに、冷媒液出口管４と冷媒配
管８とを冷媒液バイパス管１０で接続されており、この
冷媒液バイパス管１０の途中に第２の電磁弁１１が設け
られている。That is, a first electromagnetic valve 9 is provided in the middle of the refrigerant gas bypass pipe 6, and the refrigerant liquid outlet pipe 4 and the refrigerant pipe 8 are connected by a refrigerant liquid bypass pipe 10. A second solenoid valve 11 is provided in the middle of the valve 10.
また、空冷凝縮器２の近くに、温度スイッチ１２が配設
されている。Further, a temperature switch 12 is disposed near the air-cooled condenser 2.
次に、動作について説明する。冷凍装置が除霜運転を行
うときには、第２の電磁弁１１を閉し、第１の電磁弁９
を開くことにより、冷媒圧縮機１より吐出された冷媒ガ
スは冷媒吐出ガス管３を通り、空冷凝縮器２へと入る。Next, the operation will be explained. When the refrigeration system performs defrosting operation, the second solenoid valve 11 is closed and the first solenoid valve 9 is closed.
By opening the refrigerant compressor 1, the refrigerant gas discharged from the refrigerant compressor 1 passes through the refrigerant discharge gas pipe 3 and enters the air-cooled condenser 2.
この空冷凝縮器２において、冷媒ガスは凝縮液化し、冷
媒液出口管４、凝縮圧力調整弁５、冷媒配管８を通り受
液器７へと入る。In the air-cooled condenser 2, the refrigerant gas is condensed and liquefied, and enters the liquid receiver 7 through the refrigerant liquid outlet pipe 4, the condensation pressure regulating valve 5, and the refrigerant pipe 8.
このとき、凝縮圧力が凝縮圧力調整弁５の設定圧力より
も低い場合は凝縮圧力調整弁５が内部の冷媒液の通路を
塞ぎ、空冷凝縮器２の冷却管内へ冷媒液を滞溜させ、凝
縮表面積を減じ、凝縮圧力を凝縮圧力調整弁５の設定圧
力まで上昇させ、そこで凝縮圧力調整弁５は冷媒液通路
を開き、冷媒液を受液器７へ送液する。At this time, if the condensing pressure is lower than the set pressure of the condensing pressure regulating valve 5, the condensing pressure regulating valve 5 closes the internal refrigerant liquid passage, causes the refrigerant to accumulate in the cooling pipe of the air-cooled condenser 2, and is condensed. The surface area is reduced and the condensing pressure is increased to the set pressure of the condensing pressure regulating valve 5, whereupon the condensing pressure regulating valve 5 opens the refrigerant liquid passage and sends the refrigerant liquid to the liquid receiver 7.
凝縮圧力調整弁５は冷媒液通路を閉じる際、同時に冷媒
ガスのバイパス通路を開く。これにより、冷媒圧縮機１
より吐出された冷媒ガスの一部は冷媒ガスバイパス管６
、凝縮圧力調整弁５、冷媒配管８を通り、受液器７へと
入り、受液器７内の圧力を上昇させる。When the condensing pressure regulating valve 5 closes the refrigerant liquid passage, it simultaneously opens the refrigerant gas bypass passage. As a result, the refrigerant compressor 1
A part of the refrigerant gas discharged from the refrigerant gas bypass pipe 6
, the condensation pressure regulating valve 5, and the refrigerant pipe 8, and enters the liquid receiver 7, increasing the pressure inside the liquid receiver 7.
冷凍装置が冷凍運転を行うときには、第１の電磁弁９を
閉じ、第２の電磁弁１１を開くことにより、冷媒圧縮機
１より吐出された冷媒ガスは冷媒吐出ガス管３を通り、
空冷凝縮器２へと入る。When the refrigeration system performs refrigeration operation, the first solenoid valve 9 is closed and the second solenoid valve 11 is opened, so that the refrigerant gas discharged from the refrigerant compressor 1 passes through the refrigerant discharge gas pipe 3.
It enters the air-cooled condenser 2.
この空冷凝縮器２により、冷媒ガスは空冷凝縮器２に装
着された送風機１３より送風される空気と熱交換し、凝
縮液化し、冷媒液出口管４、冷媒液バイパス管１０、冷
媒配管８を通り、受液器７へと入る。In this air-cooled condenser 2, the refrigerant gas exchanges heat with the air blown by the blower 13 attached to the air-cooled condenser 2, is condensed and liquefied, and is connected to the refrigerant liquid outlet pipe 4, the refrigerant liquid bypass pipe 10, and the refrigerant pipe 8. and enters the liquid receiver 7.
このとき、空冷凝縮器２の周囲空気温度を温度スイッチ
１２により検出し、空気温度が温度スイッチの設定温度
よりも低い場合は、送風機１３の一部を停止させ、空冷
凝縮器２への送風量を減じる。At this time, the ambient air temperature of the air-cooled condenser 2 is detected by the temperature switch 12, and if the air temperature is lower than the set temperature of the temperature switch, a part of the blower 13 is stopped, and the amount of air blown to the air-cooled condenser 2 is reduced. decrease.
この発明は以上説明したとおり、除霜運転を行っている
ときには、凝縮圧力調整弁により凝縮圧力を凝縮圧力調
整弁の設定圧力以上に保ち、冷凍運転時には凝縮圧力調
整弁を作動させずに空冷凝縮器に装着された送風機の発
停による風量制御による凝縮圧力の制御を行うように構
成したので、冷凍運転を行うときは除霜運転を行うとき
よりも凝縮圧力を低くすることができる。これにともな
い、冷却能力の向上、所要電力の低減ができる効果が得
られる。As explained above, this invention maintains the condensing pressure above the set pressure of the condensing pressure regulating valve using the condensing pressure regulating valve during defrosting operation, and air-cooling condensation without operating the condensing pressure regulating valve during freezing operation. Since the condensing pressure is controlled by controlling the air volume by turning on and off the blower attached to the container, the condensing pressure can be made lower when performing freezing operation than when performing defrosting operation. Along with this, the effect of improving the cooling capacity and reducing the required power can be obtained.
第１図はこの発明の冷凍装置の一実施例の要部冷媒系統
図、第２図は従来の冷凍装置の要部冷媒系統図である。
１・・・冷媒圧縮機、２・・・空冷凝縮器、５・・・凝
縮圧力調整弁、７・・・受液器、９・・・第１の電磁弁
、１１・・・第２の電磁弁。
なお、図中同一符号は同一または相当部分を示す。FIG. 1 is a refrigerant system diagram of the main parts of an embodiment of the refrigeration system of the present invention, and FIG. 2 is a refrigerant system diagram of the main parts of a conventional refrigeration system. DESCRIPTION OF SYMBOLS 1... Refrigerant compressor, 2... Air-cooled condenser, 5... Condensing pressure adjustment valve, 7... Liquid receiver, 9... First electromagnetic valve, 11... Second solenoid valve. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
数の送風機を有する空冷凝縮器と、この空冷凝縮器の凝
縮圧力を調整する凝縮圧力調整弁と、この凝縮圧力調整
弁に冷媒配管を介して接続された受液器と、上記冷媒圧
縮機と空冷凝縮器との間と上記凝縮圧力調整弁との間に
設けられ冷凍運転時には閉じかつ除霜運転時に開いて上
記空冷凝縮器の冷媒の凝縮圧力が上記凝縮圧力調整弁の
設定圧力より低いとき冷媒圧縮機から吐出される冷媒ガ
スを凝縮圧力調整弁側にバイパスさせる第１の電磁弁と
、上記空冷凝縮器と凝縮圧力調整弁との間およびこの凝
縮圧力調整弁と受液器との間に設けられ除霜運転時には
閉じかつ冷凍運転時に開いて空冷凝縮器から吐出される
冷媒液を受液器にバイパスさせる第２の電磁弁と、上記
空冷凝縮器の設置個所の温度を検出し設定温度以下のと
き上記送風機の温度の一部を停止する温度スイッチとを
備えてなる冷凍装置。An air-cooled condenser that condenses and liquefies refrigerant gas discharged from a refrigerant compressor and has a plurality of blowers, a condensing pressure regulating valve that adjusts the condensing pressure of this air-cooling condenser, and a refrigerant pipe connected to the condensing pressure regulating valve. A liquid receiver connected to the refrigerant compressor, the air-cooled condenser, and the condensing pressure regulating valve are provided between the refrigerant compressor and the air-cooled condenser and the condensing pressure regulating valve. a first electromagnetic valve that bypasses refrigerant gas discharged from the refrigerant compressor to the condensing pressure regulating valve side when the condensing pressure is lower than the set pressure of the condensing pressure regulating valve; and the air-cooled condenser and the condensing pressure regulating valve. and a second electromagnetic valve provided between the condensing pressure regulating valve and the liquid receiver, which closes during defrosting operation and opens during freezing operation to bypass the refrigerant liquid discharged from the air-cooled condenser to the liquid receiver. and a temperature switch that detects the temperature at the location where the air-cooled condenser is installed and stops part of the temperature of the blower when the temperature is below a set temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2062286A JPS62178854A (en) | 1986-01-30 | 1986-01-30 | Refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2062286A JPS62178854A (en) | 1986-01-30 | 1986-01-30 | Refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62178854A true JPS62178854A (en) | 1987-08-05 |
Family
ID=12032338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2062286A Pending JPS62178854A (en) | 1986-01-30 | 1986-01-30 | Refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62178854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6343139A (en) * | 1986-08-08 | 1988-02-24 | Fuji Photo Film Co Ltd | Processing method for silver halide color photographic sensitive material |
-
1986
- 1986-01-30 JP JP2062286A patent/JPS62178854A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6343139A (en) * | 1986-08-08 | 1988-02-24 | Fuji Photo Film Co Ltd | Processing method for silver halide color photographic sensitive material |
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