JPH0432660A - Refrigeration arrangement - Google Patents
Refrigeration arrangementInfo
- Publication number
- JPH0432660A JPH0432660A JP13908290A JP13908290A JPH0432660A JP H0432660 A JPH0432660 A JP H0432660A JP 13908290 A JP13908290 A JP 13908290A JP 13908290 A JP13908290 A JP 13908290A JP H0432660 A JPH0432660 A JP H0432660A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- stop valve
- refrigeration
- valve
- high pressure
- 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
- 238000005057 refrigeration Methods 0.000 title claims abstract description 42
- 239000003507 refrigerant Substances 0.000 claims abstract description 83
- 230000003247 decreasing effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- 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〕
本発明は空調装置、各種環境試験装置等に使用で・きる
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 that can be used in air conditioners, various environmental test equipment, and the like.
この種の冷凍装置の代表例として、冷媒を圧縮機で圧縮
したのち凝縮器で凝縮させ、膨張機構を介して蒸発器へ
導き、再び前記圧縮機へ戻す冷凍機を有するものが知ら
れている。A typical example of this type of refrigeration equipment is known to have a refrigeration machine that compresses refrigerant in a compressor, condenses it in a condenser, guides it to an evaporator via an expansion mechanism, and returns it to the compressor again. .
このタイプの冷凍装置において、その冷凍能力を調節す
るための容量制御は、従来、一般に次のような方法で行
われている。In this type of refrigeration equipment, capacity control for adjusting its refrigeration capacity has conventionally been generally performed in the following manner.
■ 蒸発器前の膨張機構の絞り度合いの制御■ 圧縮機
回転数、気筒数等の制御
■ 高低圧バイパス・アンロード
■ 複数の冷凍機の並列運転
〔発明が解決しようとする課題〕
しかしながら、前記制御方法によると、冷凍装置が小型
の場合、構造が複雑となり、コスト高となるなど、本来
、構造が簡単で安価に提供されるべき小型冷凍装置の特
色が失われがちとなる問題があった。■ Control of the degree of throttling of the expansion mechanism in front of the evaporator ■ Control of compressor rotation speed, number of cylinders, etc. ■ High and low pressure bypass/unload ■ Parallel operation of multiple refrigerators [Problem to be solved by the invention] However, the above-mentioned According to the control method, when the refrigeration equipment is small, the structure becomes complicated and the cost increases, which tends to lose the characteristics of the small refrigeration equipment, which should originally have a simple structure and be provided at low cost. .
そこで本発明は、冷凍能力の調節を容易に行うことがで
き、それでいて構造の複雑化および製造コストの上昇を
抑制することができ、また、小型に製作しても小型の特
色を発揮させ得る冷凍装置を提供することを課題とする
。Therefore, the present invention provides a refrigeration system that can easily adjust the refrigeration capacity, while suppressing the complexity of the structure and increase in manufacturing costs, and that can exhibit the features of the compact size even when manufactured in a small size. The task is to provide equipment.
［課題を解決するための手段］
本発明者は前記課題解決のため研究の結果、冷凍回路中
の封入冷媒量を変更できれば、膨張機構入口での冷媒の
乾き度（フラッシュガス状態の度合い）を調節でき、そ
れによって冷凍能力の増減が可能であること、および冷
凍回路中の封入冷媒量を変更できるということは漏洩に
より回路中の冷媒封入量が低下したときに冷媒を補給で
きることにつながることに着目し、本発明を完成した。[Means for Solving the Problems] As a result of research to solve the above problems, the present inventor found that if the amount of refrigerant sealed in the refrigeration circuit could be changed, the degree of dryness of the refrigerant at the inlet of the expansion mechanism (degree of flash gas state) could be reduced. The ability to adjust the amount of refrigerant in the refrigeration circuit, thereby increasing or decreasing the refrigerating capacity, and the ability to change the amount of refrigerant sealed in the refrigeration circuit means that refrigerant can be replenished when the amount of refrigerant in the circuit decreases due to leakage. With this in mind, the present invention was completed.
すなわち、本発明は前記課題を解決するため、冷媒を圧
縮機で圧縮したのち凝縮器で凝縮させ、膨張機構を介し
て蒸発器へ導き、前記圧縮機へ戻す冷凍機を有する冷凍
装置において、冷媒収容タンクと、該タンクの入口側に
接続した第１の止め弁と、該タンクの出口側に接続した
第２の止め弁および絞り機構とを備えた冷媒封入量調節
部の前記第１の止め弁側を前記冷凍機回路中の高圧側冷
媒回路部分に接続するとともに前記第２の止め弁および
絞り機構側を前記冷凍機回路中の低圧側冷媒回路部分に
接続したことを特徴とする冷凍装置を提供するものであ
る。That is, in order to solve the above-mentioned problems, the present invention provides a refrigeration system having a refrigeration machine that compresses refrigerant in a compressor, condenses it in a condenser, guides it to an evaporator via an expansion mechanism, and returns it to the compressor. The first stop of the refrigerant filling amount adjustment section that includes a storage tank, a first stop valve connected to the inlet side of the tank, a second stop valve connected to the outlet side of the tank, and a throttle mechanism. A refrigeration system characterized in that a valve side is connected to a high pressure side refrigerant circuit part of the refrigerator circuit, and a side of the second stop valve and a throttle mechanism is connected to a low pressure side refrigerant circuit part of the refrigerator circuit. It provides:
前記膨張機構としては、キャピラリーチューブ、膨張弁
等があり、前記絞り機構には、キャピラリーチューブ、
絞り弁等がある。The expansion mechanism includes a capillary tube, an expansion valve, etc., and the throttle mechanism includes a capillary tube, an expansion valve, etc.
There are throttle valves, etc.
本発明冷凍装置によると、冷凍機回路中の高圧側冷媒回
路部分を流れる高圧冷媒ガスまたは高圧冷媒凝縮液を冷
媒封入量調節部における第１の止め弁を開くことにより
冷媒収容タンクに貯蔵することができる。その結果、冷
凍機回路中の冷媒循環量が減少し、冷凍能力を減少させ
ることができる。According to the refrigeration system of the present invention, the high-pressure refrigerant gas or high-pressure refrigerant condensate flowing through the high-pressure side refrigerant circuit portion of the refrigeration circuit is stored in the refrigerant storage tank by opening the first stop valve in the refrigerant filling amount adjustment section. I can do it. As a result, the amount of refrigerant circulating in the refrigerator circuit is reduced, and the refrigerating capacity can be reduced.
一方、冷凍能力の増加は、前記冷媒封入量調節部におけ
る第２の止め弁を開き、冷媒収容タンク中に貯蔵された
冷媒を冷凍機回路中の低圧側冷媒回路部分へ戻すことに
より得られる。On the other hand, the refrigerating capacity can be increased by opening the second stop valve in the refrigerant filling amount adjustment section and returning the refrigerant stored in the refrigerant storage tank to the low-pressure side refrigerant circuit portion of the refrigerator circuit.
また、冷凍機回路中の冷媒量が漏洩により減少した場合
には、前記第２の止め弁を開いて、冷媒収容タンクに貯
蔵された冷媒を低圧側冷媒回路部分へ戻すことにより、
冷媒の補給を行うことができる。Furthermore, when the amount of refrigerant in the refrigerant circuit decreases due to leakage, the second stop valve is opened to return the refrigerant stored in the refrigerant storage tank to the low-pressure side refrigerant circuit.
Refrigerant can be replenished.
〔実 施 例］
第１図は一実施例の概略構成を示している。この実施例
は一つの冷凍機からなるもので、圧縮機１、凝縮器２、
膨張弁３および蒸発器４を順次配管接続したものである
。[Embodiment] FIG. 1 shows a schematic configuration of an embodiment. This embodiment consists of one refrigerator: compressor 1, condenser 2,
An expansion valve 3 and an evaporator 4 are sequentially connected by piping.
この冷凍装置によると、冷媒は圧縮機１で圧縮されたの
ち凝縮器２で凝縮し、膨張弁３を介して蒸発器４へ導か
れ、再び圧縮機ｌへ戻る。According to this refrigeration system, refrigerant is compressed in a compressor 1, condensed in a condenser 2, guided to an evaporator 4 via an expansion valve 3, and returned to the compressor 1 again.
この冷凍装置は、さらに、冷媒封入量調節部Ａを備えて
いる。This refrigeration apparatus further includes a refrigerant filling amount adjustment section A.
冷媒封入量調節部Ａは、第１の止め弁５、冷媒収容タン
ク６、第２の止め弁７および絞り弁８を順次配管接続し
たもので、第１の止め弁５は、凝縮器２から膨張弁３へ
至る途中の高圧側冷媒回路部分９１に接続されていると
ともに、絞り弁８は、暴発器４から圧縮機１へ戻る低圧
側冷媒回路部分９２に接続されている。The refrigerant filling amount adjustment unit A is configured by sequentially connecting a first stop valve 5, a refrigerant storage tank 6, a second stop valve 7, and a throttle valve 8 through piping. The throttle valve 8 is connected to a high-pressure side refrigerant circuit section 91 on the way to the expansion valve 3 , and is connected to a low-pressure side refrigerant circuit section 92 that returns from the blowout device 4 to the compressor 1 .
冷凍装置運転中、調節部Ａにおける止め弁５および７は
いずれも閉じられている。しかし、冷凍装置の冷凍能力
を低下させようとする場合には、止め弁７は閉したまま
止め弁５を開く。それによって高圧側冷媒回路部分９１
から高圧冷媒ガスまたは高圧冷媒凝縮液が止め弁５を通
って冷媒収容タンク６へ貯蔵される。冷凍能力が所定値
まで低下するだけの冷媒量をタンク６に貯蔵したのちは
止め弁５を閉じる。During operation of the refrigeration system, stop valves 5 and 7 in regulating section A are both closed. However, when attempting to reduce the refrigeration capacity of the refrigeration system, the stop valve 5 is opened while the stop valve 7 remains closed. As a result, the high pressure side refrigerant circuit portion 91
From there, high-pressure refrigerant gas or high-pressure refrigerant condensate passes through a stop valve 5 and is stored in a refrigerant storage tank 6 . After storing enough refrigerant in the tank 6 to reduce the refrigerating capacity to a predetermined value, the stop valve 5 is closed.
冷凍能力を上げる場合には、止め弁５は閉じたまま止め
弁７を開く。それによってタンク６内の冷媒が絞り弁８
を介して低圧側冷媒回路部分９２へ流れ込み、冷凍機回
路中の循環冷媒量が増加し、冷凍能力が上昇する。所望
冷凍能力の上昇を得るだけの冷媒量が放出されると、弁
７を閉じる。When increasing the refrigerating capacity, the stop valve 7 is opened while the stop valve 5 is closed. As a result, the refrigerant in the tank 6 flows through the throttle valve 8.
The refrigerant flows into the low-pressure side refrigerant circuit portion 92 through the refrigerant, increasing the amount of refrigerant circulating in the refrigerator circuit and increasing the refrigerating capacity. When an amount of refrigerant sufficient to increase the desired refrigerating capacity is released, valve 7 is closed.
なお、冷凍機回路９中の冷媒量が少なくなった場合にも
０、前記止め弁７を開いてタンク６中の冷媒を該回路中
へ補給することができる。Note that even when the amount of refrigerant in the refrigerator circuit 9 decreases, the stop valve 7 can be opened to replenish the refrigerant in the tank 6 into the circuit.
前記冷凍装置の運転時に止め弁５を開き、冷媒の一部を
タンク６に貯蔵し、実質的な封入冷媒量を減少させるこ
とにより得られる効果を整理すると次のとおりである。The effects obtained by opening the stop valve 5 during operation of the refrigeration system, storing a portion of the refrigerant in the tank 6, and reducing the substantial amount of refrigerant enclosed are as follows.
１、過負荷運転、高圧側圧力上昇時の異常運転状態の回
避、
２、低負荷時の圧縮機１への液がえりの防止、３、膨張
弁３人口での冷媒の乾き度が変わることによる冷凍能力
の制御。1. Avoiding abnormal operating conditions during overload operation and high-pressure side pressure increase. 2. Preventing liquid from flooding into the compressor 1 during low loads. 3. Changing the dryness of the refrigerant at the expansion valve 3. control of refrigeration capacity.
また、冷凍能力の制御のため或いは冷凍機回路９中の冷
媒の漏洩により冷凍回路の運転状態が変化したときに止
め弁７を開け、タンク６中の冷媒を回路９へ戻す場合に
、冷媒が通過する絞り弁８は、タンク６からの冷媒の単
位時間当たりの戻り量を制御するためのものであり、圧
縮機１の過負荷運転の防止、圧縮機への液がえりの防止
、蒸発器４における蒸発温度の急激な変化の防止の働き
をする。In addition, when the stop valve 7 is opened to control the refrigeration capacity or when the operating state of the refrigeration circuit changes due to a leakage of refrigerant in the refrigeration circuit 9 and the refrigerant in the tank 6 is returned to the circuit 9, the refrigerant is The throttle valve 8 that passes through is used to control the amount of refrigerant returned per unit time from the tank 6, and is used to prevent overload operation of the compressor 1, prevent liquid from flowing into the compressor, and prevent liquid from flowing into the evaporator. It functions to prevent sudden changes in evaporation temperature in step 4.
冷媒封入量調節部Ａにより前記冷凍装置の冷凍能力を所
望の状態に調節するための弁５および７の開閉制御は、
例えば、次のように行えばよい。The opening/closing control of the valves 5 and 7 for adjusting the refrigerating capacity of the refrigeration apparatus to a desired state by the refrigerant filling amount adjustment section A is as follows:
For example, you can do as follows.
■ 高圧側圧力を圧力センサで検出し、該圧力が予め定
めた値を超えると、タンク６中の冷媒を多くシ、圧力が
下がればタンク６中の冷媒を少なくなるように制御する
。(2) The pressure on the high pressure side is detected by a pressure sensor, and if the pressure exceeds a predetermined value, the amount of refrigerant in the tank 6 is increased, and if the pressure decreases, the amount of refrigerant in the tank 6 is controlled to be decreased.
■ 圧縮機ｌの吐出管温度を温度センサで検出し、該温
度が予め定めた温度以上に上昇すれば、タンク６中の冷
媒を多くし、下がれば少なくするように制御する。(2) The temperature of the discharge pipe of the compressor 1 is detected by a temperature sensor, and if the temperature rises above a predetermined temperature, the amount of refrigerant in the tank 6 is increased, and if the temperature falls, the amount of refrigerant is decreased.
■ 蒸発器４の出口の冷媒の過熱度を温度センサ、圧力
センサで検出し、別途設けた図示しない温度調節器へこ
の検出値を入力し、加熱度を比較しながらタンク６中の
冷媒量を増減するように制御する。■ The degree of superheating of the refrigerant at the outlet of the evaporator 4 is detected by a temperature sensor and a pressure sensor, and this detected value is input to a separately provided temperature controller (not shown), and the amount of refrigerant in the tank 6 is determined while comparing the degree of heating. Control to increase or decrease.
なお、本発明は前記実施例に限定されるものではなく、
他の態様でも実施することができる。Note that the present invention is not limited to the above embodiments,
Other embodiments can also be implemented.
例えば、前記冷媒封入量調節部Ａにおける第２の止め弁
７および絞り弁８の接続順序は、これを逆にしてもよい
。For example, the connection order of the second stop valve 7 and the throttle valve 8 in the refrigerant filling amount adjustment section A may be reversed.
本発明冷凍装置によると、冷媒封入量調節部により冷凍
能力の調節を容易に行うことができ、また、該調節部は
構造簡単であるから装置全体の構造の複雑化および製造
コストの上昇を抑制することができ、小型に製作して構
造が簡単で安価に提供できるという小型の特色を発揮さ
せることができる。According to the refrigeration device of the present invention, the refrigerating capacity can be easily adjusted by the refrigerant filling amount adjustment section, and since the adjustment section has a simple structure, the complexity of the structure of the entire device and the increase in manufacturing costs are suppressed. It is possible to make use of the features of small size, such as being able to be manufactured in a small size, have a simple structure, and be provided at low cost.
さらに、本発明冷凍装置によると、冷凍機回路中の冷媒
量が漏洩等により減少した場合でも、不足冷媒を容易に
補給することができる。Further, according to the refrigeration system of the present invention, even if the amount of refrigerant in the refrigeration circuit decreases due to leakage or the like, the insufficient refrigerant can be easily replenished.
第１図は本発明の一実施例の概略構成図である。 ｌ・・・圧縮機 ２・・・凝縮器 ３・・・膨張弁 ４・・・蒸発器 Ａ・・・冷媒封入量調節部 ５・・・第１の止め弁 ６・・・冷媒収容タンク ７・・・第２の止め弁 ８・・・絞り弁 ９・・・冷凍機回路 ９１・・・高圧側冷媒回路部分 ９２・・・低圧側冷媒回路部分 出願人 タハイエスペンク株式会社 FIG. 1 is a schematic diagram of an embodiment of the present invention. l...Compressor 2... Condenser 3...Expansion valve 4... Evaporator A... Refrigerant filling amount adjustment part 5...first stop valve 6... Refrigerant storage tank 7...Second stop valve 8... Throttle valve 9... Refrigerator circuit 91...High pressure side refrigerant circuit part 92...Low pressure side refrigerant circuit part Applicant: Tahai Espenc Co., Ltd.
Claims (1)
膨張機構を介して蒸発器へ導き、前記圧縮機へ戻す冷凍
機を有する冷凍装置において、冷媒収容タンクと、該タ
ンクの入口側に接続した第１の止め弁と、該タンクの出
口側に接続した第２の止め弁および絞り機構とを備えた
冷媒封入量調節部の前記第１の止め弁側を前記冷凍機回
路中の高圧側冷媒回路部分に接続するとともに前記第２
の止め弁および絞り機構側を前記冷凍機回路中の低圧側
冷媒回路部分に接続したことを特徴とする冷凍装置。(1) After compressing the refrigerant with a compressor, it is condensed with a condenser,
A refrigeration system having a refrigeration machine that leads the refrigerant to the evaporator via an expansion mechanism and returns it to the compressor, comprising: a refrigerant storage tank; a first stop valve connected to the inlet side of the tank; and a first stop valve connected to the outlet side of the tank. The first stop valve side of the refrigerant filling amount adjusting unit, which is equipped with a second stop valve and a throttle mechanism, is connected to the high pressure side refrigerant circuit portion of the refrigerator circuit, and the second stop valve
A refrigeration system characterized in that a stop valve and a throttle mechanism side of the refrigeration system are connected to a low pressure side refrigerant circuit portion of the refrigeration machine circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13908290A JPH0432660A (en) | 1990-05-28 | 1990-05-28 | Refrigeration arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13908290A JPH0432660A (en) | 1990-05-28 | 1990-05-28 | Refrigeration arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0432660A true JPH0432660A (en) | 1992-02-04 |
Family
ID=15237065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13908290A Pending JPH0432660A (en) | 1990-05-28 | 1990-05-28 | Refrigeration arrangement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0432660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0622875U (en) * | 1992-04-13 | 1994-03-25 | 幸司 伊藤 | Refrigerator protection mechanism |
| JP2009233163A (en) * | 2008-03-27 | 2009-10-15 | Mizuno Corp | Sole structure of sports shoe and sports shoe |
-
1990
- 1990-05-28 JP JP13908290A patent/JPH0432660A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0622875U (en) * | 1992-04-13 | 1994-03-25 | 幸司 伊藤 | Refrigerator protection mechanism |
| JP2009233163A (en) * | 2008-03-27 | 2009-10-15 | Mizuno Corp | Sole structure of sports shoe and sports shoe |
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