JP2000234813A - Refrigerating device - Google Patents
Refrigerating deviceInfo
- Publication number
- JP2000234813A JP2000234813A JP11035415A JP3541599A JP2000234813A JP 2000234813 A JP2000234813 A JP 2000234813A JP 11035415 A JP11035415 A JP 11035415A JP 3541599 A JP3541599 A JP 3541599A JP 2000234813 A JP2000234813 A JP 2000234813A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heat
- refrigerant circuit
- compressor
- heat exchanger
- 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
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、冷凍装置におけ
る同時使用温度の選択拡大と、その冷凍装置の信頼性向
上及び効率向上に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an increase in the simultaneous use temperature of a refrigeration system, and to an improvement in the reliability and efficiency of the refrigeration system.
【０００２】[0002]
【従来の技術】図５は、例えば社団法人日本冷凍協会出
版、初級標準テキスト冷凍空調技術の95頁図13.1に示された
従来の冷凍装置の冷媒回路図を簡略化したものである。
図において１は圧縮機、２は凝縮器、３は膨張機構であ
る膨張弁、４は蒸発器である。上記のような従来の冷凍
装置では、圧縮機１から吐出された冷媒カ゛スは、凝縮器
２によって凝縮され液冷媒となり、膨張機構３によって
絞られた後、蒸発器４で蒸発し、圧縮機１によって圧縮
され吐出されることが繰り返される。蒸発器４は一般的
に複数台並列接続され、効率面からどの蒸発器において
も蒸発温度はほとんど同じ温度帯に設定される。2. Description of the Related Art FIG. 5 is a simplified circuit diagram of a refrigerant circuit of a conventional refrigeration apparatus shown in FIG.
In the figure, 1 is a compressor, 2 is a condenser, 3 is an expansion valve as an expansion mechanism, and 4 is an evaporator. In the conventional refrigeration apparatus as described above, the refrigerant gas discharged from the compressor 1 is condensed by the condenser 2 to become a liquid refrigerant, narrowed down by the expansion mechanism 3, evaporated in the evaporator 4, and evaporated in the evaporator 4. The compression and ejection are repeated. Generally, a plurality of evaporators 4 are connected in parallel, and the evaporating temperature is set to almost the same temperature zone in any evaporator from the viewpoint of efficiency.
【０００３】また、特開平１０−２０５９０４号には、
１次側（熱源側）冷媒回路と、この１次側冷媒回路の蒸
発側熱交換器との間で熱交換可能な２次側（利用側）熱
交換部を備えた冷凍装置が記載されている。ここでは蒸
発側熱交換部は一つしか設けられておらず、蒸発温度帯
を一つしか設定することができない。[0003] Also, JP-A-10-205904 discloses that
A refrigeration apparatus having a secondary (use side) heat exchange unit capable of exchanging heat between a primary (heat source side) refrigerant circuit and an evaporative heat exchanger of the primary refrigerant circuit is described. I have. Here, only one evaporation-side heat exchange unit is provided, and only one evaporation temperature zone can be set.
【０００４】[0004]
【発明が解決しようとする課題】スーハ゜ーマーケットやコンヒ゛ニエンス
ストアなどの一般的な店舗では、食品などの収納スヘ゜ースは、
冷凍ソ゛ーンと呼ばれる冷媒の蒸発温度帯が-20℃以下のも
のと、冷蔵ソ゛ーンと呼ばれる冷媒の蒸発温度帯が-20℃以
上のものと、空調ソ゛ーンである冷媒の蒸発温度が-5℃以上
のものの３種類以上の冷媒回路を持つのが普通である。
従来の冷凍機器（冷凍装置）は、一台の冷凍機器に対し
て、一つの温度帯（ソ゛ーン）を作る為、目的の蒸発温度に
応じて複数台の冷凍機器を設置する必要がある。In general stores such as supermarkets and convenience stores, the storage space for foods and the like is
The evaporation temperature of the refrigerant called the refrigeration zone is -20 ° C or lower, the evaporation temperature of the refrigerant called the refrigeration zone is -20 ° C or higher, and the evaporation temperature of the refrigerant which is the air conditioning zone is -5 ° C or higher. It usually has three or more types of refrigerant circuits.
In the conventional refrigeration equipment (refrigeration apparatus), it is necessary to install a plurality of refrigeration equipments according to a target evaporation temperature in order to create one temperature zone (sone) for one refrigeration equipment.
【０００５】また、店舗改装の時などでは、図５におけ
る凝縮器２の出口から膨張機構３の入口までの配管と、
蒸発器４の出口から圧縮機入口までの配管は、店舗の壁
等の中に埋め込まれている事が多いためそのまま使われ
る事が多く、その（延長）配管長さは長い場合100ｍと
なることもある。そして、この配管の長さは店舗により
異なるため、現地工事で冷媒を封入する場合、封入する
冷媒量は工事業者の経験によるところが多く、場合によ
っては封入する冷媒量が多すぎたり少なすぎたりするた
め、最適な運転ができないことがあり、圧縮機等の故障
の原因ともなった。[0005] When the store is renovated, the piping from the outlet of the condenser 2 to the inlet of the expansion mechanism 3 in FIG.
The pipes from the outlet of the evaporator 4 to the compressor inlet are often used as they are because they are often embedded in the walls of stores, etc., and the (extended) pipe length is 100 m when long. There is also. And since the length of this pipe varies from store to store, when charging refrigerant in local construction, the amount of refrigerant to be charged depends on the experience of the contractor, and in some cases, the amount of refrigerant to be charged is too large or too small. As a result, optimal operation may not be performed, which may cause a failure of the compressor or the like.
【０００６】また、HCFC冷媒からHFC冷媒を用いた冷媒
回路に変更する場合、HCFC冷媒サイクルで用いていた冷凍機
油とその化合物や冷媒が上記の冷媒配管に残留する。そ
の残留物が、変更後のHFC冷媒サイクルの冷凍機油に混入す
ると圧縮機等の故障の原因となったり膨張弁３にスラッシ゛
詰まりがおきたりするため、冷媒回路全体を取り替える
か、しっかりと洗浄する必要があり、既設の冷媒配管を
そのまま使うことはできず、リプレース性が悪いという
問題もあった。When the HCFC refrigerant is changed to a refrigerant circuit using an HFC refrigerant, the refrigerating machine oil used in the HCFC refrigerant cycle and its compounds and refrigerant remain in the refrigerant pipe. If the residue is mixed with the refrigerating machine oil of the HFC refrigerant cycle after the change, it may cause a failure of the compressor or the like or the expansion valve 3 may be clogged, so the entire refrigerant circuit is replaced or washed thoroughly. Therefore, there is a problem that the existing refrigerant pipe cannot be used as it is, and the replacement property is poor.
【０００７】この発明は、上記の問題点を解決するため
になされたもので、一つの冷凍装置で冷凍ソ゛ーン、冷蔵ソ゛
ーン、空調ソ゛ーンの蒸発温度帯を複数選んで持つことがで
き、かつ圧縮機のある熱源側冷媒回路と圧縮機のない利
用側冷媒回路とを分離しそれぞれを独立させているた
め、熱源側冷媒回路に封入する冷媒量を一定とすること
ができ、封入冷媒量の差による故障を防ぐことが出来
る。また、HCFC冷媒からHFC冷媒を用いた冷媒回路に変
更する場合、HCFC冷媒サイクルで用いていた冷凍機油とその
化合物や冷媒が冷媒配管に残留していても、その残留物
は圧縮機のある熱源側冷媒回路に混入しないので、圧縮
機等の故障を防ぐことが出来る。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a single refrigeration apparatus can have a plurality of evaporation temperature zones of a refrigeration zone, a refrigeration zone, and an air conditioning zone, and a compressor. Since the heat source side refrigerant circuit with the compressor and the use side refrigerant circuit without the compressor are separated and made independent, the amount of refrigerant sealed in the heat source side refrigerant circuit can be kept constant, and the difference Failure can be prevented. Also, when changing from a HCFC refrigerant to a refrigerant circuit using an HFC refrigerant, even if the refrigerating machine oil and its compounds or refrigerant used in the HCFC refrigerant cycle remain in the refrigerant piping, the residue is transferred to a heat source having a compressor. Since it does not enter the side refrigerant circuit, it is possible to prevent a failure of the compressor or the like.
【０００８】[0008]
【課題を解決するための手段】この発明に係わる冷凍装
置は、圧縮機、凝縮器、膨張機構、複数の熱交換器を連
結し冷媒を循環させ、各々の熱交換器の間には膨張機構
を設けた熱源側冷媒回路と、熱交換器と熱交換し、熱源
側冷媒回路とは独立した利用側冷媒回路を複数設けたも
のである。A refrigerating apparatus according to the present invention connects a compressor, a condenser, an expansion mechanism, and a plurality of heat exchangers to circulate a refrigerant, and an expansion mechanism is provided between each heat exchanger. And a plurality of utilization-side refrigerant circuits that exchange heat with the heat source-side refrigerant circuit and the heat exchanger and that are independent of the heat-source-side refrigerant circuit.
【０００９】また、この発明に係わる冷凍装置は、圧縮
機、凝縮器、膨張機構、複数の熱交換器を連結し冷媒を
循環させ、複数の熱交換器のいくつかを圧縮機に対して
並列接続し、並列接続した各熱交換器のうち、冷媒出口
側の冷媒圧力が最低のもの以外の熱交換器の冷媒出口側
に圧力調整弁を設けた熱源側冷媒回路と、熱交換器と熱
交換し、熱源側冷媒回路とは独立した利用側冷媒回路を
複数設けたものである。Further, the refrigerating apparatus according to the present invention connects a compressor, a condenser, an expansion mechanism, and a plurality of heat exchangers to circulate a refrigerant, and some of the plurality of heat exchangers are arranged in parallel with the compressor. A heat source side refrigerant circuit having a pressure regulating valve provided on the refrigerant outlet side of the heat exchangers other than the one having the lowest refrigerant pressure among the heat exchangers connected and connected in parallel, the heat exchanger and the heat exchanger. It is replaced with a plurality of use side refrigerant circuits independent of the heat source side refrigerant circuit.
【００１０】また、この発明に係わる冷凍装置は、複数
の圧縮機、凝縮器、膨張機構、複数の熱交換器を連結し
冷媒を循環させ、複数の各圧縮機の冷媒入口側は複数の
各熱交換器の冷媒出口側に１対１に接続される熱源側冷
媒回路と、熱交換器と熱交換し、熱源側冷媒回路とは独
立した利用側冷媒回路を複数設けたものである。Further, the refrigeration apparatus according to the present invention connects a plurality of compressors, a condenser, an expansion mechanism, and a plurality of heat exchangers to circulate the refrigerant, and the refrigerant inlet side of each of the plurality of compressors has a plurality of refrigerants. A heat source side refrigerant circuit connected one-to-one to the refrigerant outlet side of the heat exchanger, and a plurality of utilization side refrigerant circuits which exchange heat with the heat exchanger and are independent of the heat source side refrigerant circuit.
【００１１】また、この発明に係わる冷凍装置は、圧縮
機、凝縮器、エジェクター、第一の熱交換器、気液分離
機の気層側を連結し、気液分離機の液層側、膨張機構、
第二の熱交換器、エジェクターとを連結し冷媒を循環さ
せる熱源側冷媒回路と、熱交換器と熱交換し、熱源側冷
媒回路とは独立した利用側冷媒回路を複数設けたもので
ある。Further, the refrigeration apparatus according to the present invention connects a compressor, a condenser, an ejector, a first heat exchanger, and a gas layer side of a gas-liquid separator, and connects a liquid layer side of the gas-liquid separator to expansion. mechanism,
A heat source side refrigerant circuit that connects the second heat exchanger and the ejector and circulates the refrigerant, and a plurality of use side refrigerant circuits that exchange heat with the heat exchanger and are independent of the heat source side refrigerant circuit.
【００１２】また、この発明に係わる冷凍装置は、利用
側冷媒回路はポンプ、膨張弁、蒸発器を備えたものであ
る。Further, in the refrigerating apparatus according to the present invention, the use side refrigerant circuit includes a pump, an expansion valve, and an evaporator.
【００１３】また、この発明に係わる冷凍装置は、圧縮
機、複数の熱交換器、膨張機構、蒸発器を連結し冷媒を
循環させ、各々の熱交換器の間には膨張機構を設けた熱
源側冷媒回路と、熱交換器と熱交換し、熱源側冷媒回路
とは独立した利用側冷媒回路を複数設けたものである。Further, a refrigeration apparatus according to the present invention connects a compressor, a plurality of heat exchangers, an expansion mechanism, and an evaporator to circulate a refrigerant, and a heat source having an expansion mechanism between each heat exchanger. A plurality of use-side refrigerant circuits that exchange heat with the side refrigerant circuit and the heat exchanger and are independent of the heat source-side refrigerant circuit are provided.
【００１４】[0014]
【発明の実施の形態】実施の形態１．図１はこの発明の
実施の形態１を示す図で冷凍装置の冷媒回路を示す。図
において、１は圧縮機、２は凝縮器、３ａ、３ｂは膨張
弁、４ａ、４ｂは熱交換器、５ａ、５ｂは冷媒ホ゜ンフ゜、
６ａ、６ｂ、６ｃ、６ｄは膨張弁、７ａ、７ｂ、７ｃ、
７ｄは蒸発器である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 shows a first embodiment of the present invention and shows a refrigerant circuit of a refrigeration apparatus. In the figure, 1 is a compressor, 2 is a condenser, 3a and 3b are expansion valves, 4a and 4b are heat exchangers, 5a and 5b are refrigerant phones,
6a, 6b, 6c, 6d are expansion valves, 7a, 7b, 7c,
7d is an evaporator.
【００１５】圧縮機１、凝縮器２、膨張機構である膨張
弁３ａ、蒸発側の熱交換器４ａ、膨張機構である膨張弁
３ｂ、蒸発側の熱交換器４ｂを連結し冷媒を循環させ、
熱交換器４ａ、４ｂは直列に接続され、一次側（熱源
側）冷媒回路Ａを構成している。二次側（利用側）冷媒
回路Ｂは熱源側冷媒回路Ａの熱交換器４ａを熱交換部と
し、膨張機構である膨張弁６ａと蒸発器７ａ、膨張機構
である膨張弁６ｂと蒸発器７ｂ、とを並列に接合し、冷
媒ポンプ５ａにて冷媒回路Ｂ内の冷媒を循環させてい
る。もう一つの二次側冷媒回路Ｃも冷媒回路Ｂと同様
に、熱源側冷媒回路Ａの熱交換器４ｂを熱交換部とし、
膨張機構である膨張弁６ｃと蒸発器７ｃ、膨張機構であ
る膨張弁６ｄと蒸発器７ｄ、とを並列に接合し、冷媒ポ
ンプ５ｂにて冷媒回路Ｃ内の冷媒を循環させている。
尚、これらの二次側冷媒回路Ｂ、Ｃは圧縮機を含まない
冷媒回路であって、一次側冷媒回路と独立した回路であ
る。A compressor 1, a condenser 2, an expansion valve 3a as an expansion mechanism, a heat exchanger 4a on the evaporation side, an expansion valve 3b as an expansion mechanism, and a heat exchanger 4b on the evaporation side are connected to circulate a refrigerant.
The heat exchangers 4a and 4b are connected in series, and constitute a primary side (heat source side) refrigerant circuit A. The secondary-side (use-side) refrigerant circuit B uses the heat exchanger 4a of the heat source-side refrigerant circuit A as a heat exchange unit, and has an expansion valve 6a and an evaporator 7a as an expansion mechanism, and an expansion valve 6b and an evaporator 7b as an expansion mechanism. And are connected in parallel, and the refrigerant in the refrigerant circuit B is circulated by the refrigerant pump 5a. Another secondary-side refrigerant circuit C, similarly to the refrigerant circuit B, uses the heat exchanger 4b of the heat-source-side refrigerant circuit A as a heat exchange unit,
An expansion valve 6c as an expansion mechanism and an evaporator 7c, and an expansion valve 6d and an evaporator 7d as an expansion mechanism are connected in parallel, and a refrigerant in a refrigerant circuit C is circulated by a refrigerant pump 5b.
In addition, these secondary-side refrigerant circuits B and C are refrigerant circuits that do not include a compressor, and are circuits independent of the primary-side refrigerant circuit.
【００１６】一次側冷媒回路Ａの冷媒の流れ及び状態は
次のようである。圧縮機１によって吐出された冷媒カ゛ス
は凝縮器２によって熱交換され液冷媒となり、膨張弁３
ａによって絞られ、熱交換器４ａによって蒸発温度Ｔ
１、例えば10℃で蒸発する。熱交換器４ａによって蒸発
した冷媒は再度膨張弁３ｂによって絞られ、熱交換器４
ｂによって蒸発温度Ｔ２（Ｔ１＞Ｔ２）、例えば、-10
℃で蒸発する。熱交換器４ｂによって蒸発した冷媒カ゛ス
は、圧縮機１によって圧縮され再び吐出される。The flow and state of the refrigerant in the primary refrigerant circuit A are as follows. The refrigerant gas discharged by the compressor 1 is heat-exchanged by the condenser 2 to become a liquid refrigerant.
a, and the evaporation temperature T by the heat exchanger 4a.
1. Evaporate at, for example, 10 ° C. The refrigerant evaporated by the heat exchanger 4a is throttled again by the expansion valve 3b,
b, the evaporation temperature T2 (T1> T2), for example, -10
Evaporate at ° C. The refrigerant gas evaporated by the heat exchanger 4b is compressed by the compressor 1 and discharged again.
【００１７】また、二次側冷媒回路Ｂ、Ｃの冷媒の流れ
及び状態は次のようである。一次側冷媒回路Ａの熱交換
器４ａと４ｂに対して二次側冷媒回路Ｂ、Ｃの熱交換部
を設け（ここでは、熱交換器４ａ、４ｂを共用）冷媒回
路Ａの冷媒と冷媒回路Ｂ、Ｃの冷媒とを熱交換してい
る。熱交換器４ａによって冷却、凝縮された冷媒回路Ｂ
側の冷媒は、冷媒ホ゜ンフ゜５ａによって冷媒回路Ｂを循環
する。冷媒ホ゜ンフ゜５ａによって押し出された冷媒は膨張
弁６ａ、６ｂによってそれぞれ絞られ、蒸発器７ａ、７
ｂによって蒸発温度Ｔ３（Ｔ３＞Ｔ１）、例えば15℃で
蒸発し、利用側冷媒回路Ｂは蒸発温度15℃となり、空調
ゾーンの蒸発温度帯をもつことになる。蒸発器７ａ、７
ｂによって蒸発した冷媒は再び熱交換器４ａによって冷
却、凝縮される。冷媒回路Ｃ側も同様であるが、蒸発器
７ｃ、７ｄの蒸発温度Ｔ４（Ｔ３＞Ｔ４）は、例えば-5
℃となり、冷蔵ゾーンの蒸発温度帯をもつことになる。The flow and state of the refrigerant in the secondary refrigerant circuits B and C are as follows. The heat exchangers of the secondary refrigerant circuits B and C are provided for the heat exchangers 4a and 4b of the primary refrigerant circuit A (here, the heat exchangers 4a and 4b are shared). Heat exchange with B and C refrigerants. Refrigerant circuit B cooled and condensed by heat exchanger 4a
The refrigerant on the side circulates through the refrigerant circuit B by the refrigerant horn 5a. The refrigerant pushed out by the refrigerant horn 5a is throttled by the expansion valves 6a and 6b, respectively, and the evaporators 7a and 7b.
b evaporates at an evaporating temperature T3 (T3> T1), for example, 15 ° C., and the use side refrigerant circuit B has an evaporating temperature of 15 ° C., which has an evaporating temperature zone of the air conditioning zone. Evaporators 7a, 7
The refrigerant evaporated by b is cooled and condensed again by the heat exchanger 4a. The same applies to the refrigerant circuit C side, but the evaporation temperature T4 (T3> T4) of the evaporators 7c and 7d is, for example, −5.
° C, and has an evaporation temperature zone in the refrigeration zone.
【００１８】よって、スーハ゜ーマーケットやコンヒ゛ニエンスストアなどの
店舗においても、食品などの収納スヘ゜ースが例えばスヘ゜ース1、
2、3、4とある場合には、スヘ゜ース1、2は蒸発器７ａ、７ｂの
蒸発温度Ｔ３により、スヘ゜ース3、4は蒸発器７ｃ、７ｄの蒸
発温度Ｔ４による温度帯となる。以上より、一台の冷凍
機器（冷凍装置）にて複数の（多くの）蒸発温度帯を選
んでもつことが可能となる。Therefore, in stores such as the supermarket and the convenience store, the storage space for food and the like is, for example, space 1,
In the case where there are 2, 3, and 4, the spaces 1 and 2 are in the temperature zone according to the evaporation temperature T3 of the evaporators 7a and 7b, and the spaces 3 and 4 are in the temperature band according to the evaporation temperature T4 of the evaporators 7c and 7d. As described above, it is possible to select and have a plurality of (many) evaporation temperature zones in one refrigeration apparatus (refrigeration apparatus).
【００１９】また、店舗にこの冷凍装置を設置する場
合、店舗の大きさによって冷媒回路の冷媒配管の長さが
左右される。冷媒配管の長さが変わる場所（延長配管）
は、圧縮機１を含まない冷媒回路Ｂ、Ｃの一部であっ
て、冷媒回路Ｂにおいては冷媒ホ゜ンフ゜５ａの出口から膨
張弁６ａ、６ｂの間の配管と、蒸発器７ａ、７ｂの出口
から熱交換器４ａの入口までの間、同様に冷媒回路Ｃに
おいては冷媒ホ゜ンフ゜５ｂの出口から膨張弁６ｃ、６ｄの
間の配管と、蒸発器７ｃ、７ｄの出口から熱交換器４ｂ
の入口までの間である。When this refrigeration system is installed in a store, the length of the refrigerant pipe of the refrigerant circuit depends on the size of the store. Where the length of the refrigerant pipe changes (extension pipe)
Is a part of the refrigerant circuits B and C that do not include the compressor 1. In the refrigerant circuit B, pipes between the outlet of the refrigerant horn 5a and the expansion valves 6a and 6b, and the outlets of the evaporators 7a and 7b Similarly, in the refrigerant circuit C, a pipe between the outlet of the refrigerant horn 5b and the expansion valves 6c and 6d, and a pipe between the outlets of the evaporators 7c and 7d to the heat exchanger 4b.
Until the entrance of
【００２０】よって、圧縮機をもつ冷媒回路Ａは冷媒配
管の長さが変わることがないため、店舗の冷凍装置設置
（工事）時に冷媒の封入冷媒量を一定とする事ができ
る。よって、圧縮機のある一次側冷媒回路と圧縮機のな
い二次側冷媒回路を分離しそれぞれを独立させているた
め、圧縮機のある冷媒回路に封入する冷媒量を一定とす
ることができ、封入冷媒量の差による故障を防ぐことが
できる。Therefore, since the length of the refrigerant pipe in the refrigerant circuit A having the compressor does not change, the amount of refrigerant charged in the refrigerant can be kept constant when the refrigeration system is installed (construction) in the store. Therefore, since the primary-side refrigerant circuit with the compressor and the secondary-side refrigerant circuit without the compressor are separated from each other, the amount of refrigerant to be sealed in the refrigerant circuit with the compressor can be constant. Failure due to the difference in the amount of the charged refrigerant can be prevented.
【００２１】また、店舗の改装時に店舗の中に埋め込ま
れているためにそのまま使用される上記延長配管（既設
配管）は、上記同様に冷媒回路Ｂ、Ｃにおける冷媒ホ゜ンフ
゜５ａ、５ｂの出口から膨張弁６ａ、６ｂ、６ｃ、６ｄ
の間の配管と、熱交換器７ａ、７ｂ、７ｃ、７ｄの出口
から熱交換器４ａ、４ｂの入口までの間の配管であるの
で、 HCFC冷媒からHFC冷媒を用いた冷媒回路に変更する
場合でも、延長配管内にHCFC冷媒サイクルで用いていた冷凍
機油とその化合物や冷媒が上記冷媒配管Ｂや冷媒配管Ｃ
内に残留していても、冷媒配管（回路）Ｂ、Ｃは冷媒回
路Ａとは独立しているため、その残留物は圧縮機のある
冷媒回路Ａと冷凍機油にに混入しない。よって、冷媒回
路Ａの圧縮機の故障もなければ膨張弁のスラッシ゛詰まりな
どもなく、改装時であっても既設配管を直すことなくそ
のまま使うことができ、リプレース性が良くなる。Further, the extension pipes (existing pipes) which are used as they are because they are embedded in the store when the store is renovated are expanded from the outlets of the refrigerant fans 5a and 5b in the refrigerant circuits B and C in the same manner as described above. Valves 6a, 6b, 6c, 6d
And the piping between the outlets of the heat exchangers 7a, 7b, 7c, 7d and the inlets of the heat exchangers 4a, 4b, so that the refrigerant circuit is changed from HCFC refrigerant to HFC refrigerant. However, the refrigerating machine oil used in the HCFC refrigerant cycle and its compound and refrigerant are contained in the extension piping in the refrigerant piping B and the refrigerant piping C.
Even if it remains in the refrigerant circuit, the refrigerant pipes (circuits) B and C are independent of the refrigerant circuit A, so that the residue does not mix into the refrigerant circuit A with the compressor and the refrigerating machine oil. Therefore, there is no failure of the compressor of the refrigerant circuit A, no slash or clogging of the expansion valve, etc., and even when remodeling, the existing piping can be used without repairing, and the replacement property is improved.
【００２２】また、膨張弁３ｂと熱交換器４ｂと冷媒回
路Ｃと同様の組合わせを熱交換器４ｂの後に追加する事
により、同時に３つ以上の蒸発温度帯を持てるようにし
ても良い。The same combination as the expansion valve 3b, the heat exchanger 4b, and the refrigerant circuit C may be added after the heat exchanger 4b so that three or more evaporation temperature zones can be simultaneously provided.
【００２３】また、冷媒回路Ｂ、Ｃに用いる冷媒ホ゜ンフ゜
と冷媒の組合わせは圧縮機でたとえると、圧縮比が3と
なるような組合わせが望ましい。そのために冷媒ホ゜ンフ゜
を複数個使用しても良い。Further, the combination of the refrigerant horn and the refrigerant used in the refrigerant circuits B and C is desirably such that the compression ratio becomes 3 when compared with a compressor. Therefore, a plurality of refrigerant hoses may be used.
【００２４】実施の形態２．図２はこの発明の実施の形
態２を示す図である。図１と同様の部分は同一記号を付
し、その説明は省略する。図２において、８は熱交換器
４ａの出口から出た冷媒の圧力を熱交換器４ｂの出口か
ら出た冷媒の圧力と同じにする（圧力を低くする）ため
の圧力調整弁である。Embodiment 2 FIG. FIG. 2 shows a second embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 2, reference numeral 8 denotes a pressure regulating valve for making the pressure of the refrigerant flowing out of the outlet of the heat exchanger 4a equal to the pressure of the refrigerant flowing out of the outlet of the heat exchanger 4b (lowering the pressure).
【００２５】圧縮機１、凝縮器２、膨張弁３ａ、３ｂ、
熱交換器４ａ、４ｂ、圧力調整弁８で１つの一次側（熱
源側）冷媒回路Ａを構成しており、熱交換器４ａ、冷媒
ホ゜ンフ゜５ａ、膨張弁６ａ、６ｂ、蒸発器７ａ、７ｂの冷
媒回路と熱交換器４ｂ、冷媒ホ゜ンフ゜５ｂ、膨張弁６ｃ、
６ｄ、蒸発器７ｃ、７ｄの冷媒回路もそれぞれ独立した
二次側（利用側）冷媒回路Ｂ、Ｃを構成している。The compressor 1, the condenser 2, the expansion valves 3a, 3b,
One primary side (heat source side) refrigerant circuit A is constituted by the heat exchangers 4a and 4b and the pressure regulating valve 8, and includes a heat exchanger 4a, a refrigerant pump 5a, expansion valves 6a and 6b, and evaporators 7a and 7b. Refrigerant circuit and heat exchanger 4b, refrigerant phone 5b, expansion valve 6c,
The refrigerant circuits of 6d and the evaporators 7c and 7d also constitute independent secondary side (use side) refrigerant circuits B and C, respectively.
【００２６】圧縮機１によって吐出された冷媒カ゛スは凝
縮器２によって熱交換され液冷媒となり、膨張弁３ａに
よって絞られ、熱交換器４ａによって蒸発温度Ｔ１、例
えば10℃で蒸発する。膨張弁３ｂによって絞られた冷媒
は熱交換器４ｂによって蒸発温度Ｔ２（Ｔ１＞Ｔ２）、
例えば、-10℃で蒸発する。熱交換器４ａによって蒸発
した冷媒カ゛スは、圧力調整弁８によって熱交換器４ｂで
蒸発した冷媒カ゛スと同じ圧力まで減圧され熱交換器４ｂ
で蒸発した冷媒と共に圧縮機１によって圧縮され再び吐
出される。The refrigerant gas discharged by the compressor 1 undergoes heat exchange by the condenser 2 to become a liquid refrigerant, is throttled by the expansion valve 3a, and is evaporated by the heat exchanger 4a at an evaporation temperature T1, for example, 10 ° C. The refrigerant restricted by the expansion valve 3b is evaporated by the heat exchanger 4b at an evaporation temperature T2 (T1> T2),
For example, it evaporates at -10 ° C. The refrigerant gas evaporated by the heat exchanger 4a is depressurized to the same pressure as that of the refrigerant gas evaporated by the heat exchanger 4b by the pressure regulating valve 8, and the heat exchanger 4b
The refrigerant is compressed by the compressor 1 together with the refrigerant evaporated in the above and discharged again.
【００２７】熱交換器４ａと４ｂによって冷媒回路Ａの
冷媒と冷媒回路Ｂ、Ｃの冷媒と熱交換するようになって
いる。熱交換器４ａによって冷却、凝縮された冷媒回路
Ｂ側の冷媒は、冷媒ホ゜ンフ゜５ａによって冷媒回路Ｂを循
環する。冷媒ホ゜ンフ゜５ａによって押出された冷媒は膨張
弁６ａ、６ｂによって絞られ、蒸発器７ａ、７ｂによっ
て蒸発温度Ｔ３（Ｔ３＞Ｔ１）、例えば15℃で蒸発す
る。蒸発器７ａ、７ｂによって蒸発した冷媒は再び熱交
換器４ａによって冷却、凝縮される。冷媒回路Ｃ側も同
様であるが、蒸発器７ｃ、７ｄの蒸発温度Ｔ４（Ｔ４＞
Ｔ３）は、例えば-5℃となる。The heat exchangers 4a and 4b exchange heat with the refrigerant in the refrigerant circuit A and the refrigerant in the refrigerant circuits B and C. The refrigerant on the refrigerant circuit B side that has been cooled and condensed by the heat exchanger 4a circulates through the refrigerant circuit B by the refrigerant horn 5a. The refrigerant extruded by the refrigerant horn 5a is throttled by the expansion valves 6a and 6b, and is evaporated by the evaporators 7a and 7b at an evaporation temperature T3 (T3> T1), for example, 15 ° C. The refrigerant evaporated by the evaporators 7a and 7b is cooled and condensed again by the heat exchanger 4a. The same applies to the refrigerant circuit C side, but the evaporation temperature T4 of the evaporators 7c and 7d (T4>
T3) is, for example, −5 ° C.
【００２８】また、店舗にこの装置を設置する場合、店
舗の大きさによって長さが左右される配管は、冷媒回路
Ｂ、Ｃにおける冷媒ホ゜ンフ゜５ａ、５ｂの出口から膨張弁
６ａ、６ｂ、６ｃ、６ｄの間の配管と、熱交換器７ａ、
７ｂ、７ｃ、７ｄの出口から熱交換器４ａ、４ｂの入口
までの間の配管であるので、圧縮機をもつ冷媒回路Ａの
封入冷媒量は一定とする事ができる。When this apparatus is installed in a store, piping whose length depends on the size of the store is connected to the expansion valves 6a, 6b, 6c, 6c from the outlets of the refrigerant hoses 5a, 5b in the refrigerant circuits B, C. 6d piping and heat exchanger 7a,
Since it is a pipe from the outlets of 7b, 7c, 7d to the inlets of the heat exchangers 4a, 4b, the amount of refrigerant charged in the refrigerant circuit A having a compressor can be constant.
【００２９】また、店舗の改装時に店舗の中に埋め込ま
れているためにそのまま使用される配管は、上記同様に
冷媒回路Ｂ、Ｃにおける冷媒ホ゜ンフ゜５ａ、５ｂの出口か
ら膨張弁６ａ、６ｂ、６ｃ、６ｄの間の配管と、熱交換
器７ａ、７ｂ、７ｃ、７ｄの出口から熱交換器４ａ、４
ｂの入口までの間の配管であるので、 HCFC冷媒からHFC
冷媒を用いた冷媒回路に変更する場合でも、HCFC冷媒サイ
クルで用いていた冷凍機油とその化合物や冷媒が上記冷媒
配管に残留していても、その残留物は圧縮機のある冷媒
回路Ａに混入しない。Further, the pipes which are used as they are because they are embedded in the store when the store is renovated are connected to the expansion valves 6a, 6b, 6c from the outlets of the refrigerant hoses 5a, 5b in the refrigerant circuits B, C in the same manner as described above. , 6d and outlets of the heat exchangers 7a, 7b, 7c, 7d through the heat exchangers 4a, 4d.
b from the HCFC refrigerant to the HFC
Even when the refrigerant circuit is changed to a refrigerant circuit, even if the refrigerating machine oil and its compound or refrigerant used in the HCFC refrigerant cycle remain in the refrigerant pipe, the residue is mixed into the refrigerant circuit A having the compressor. do not do.
【００３０】また、膨張弁３ａと熱交換器４ａと圧力調
整弁８と冷媒回路Ｂと同様の組合わせを追加する事によ
り、同時に３つ以上の蒸発温度帯を持てるようにしても
良い。Further, by adding a combination similar to that of the expansion valve 3a, the heat exchanger 4a, the pressure regulating valve 8, and the refrigerant circuit B, three or more evaporation temperature zones may be simultaneously provided.
【００３１】また、冷媒回路Ｂ、Ｃに用いる冷媒ホ゜ンフ゜
と冷媒の組合わせは圧縮機でたとえると、圧縮比3とな
るような組合わせが望ましい。そのために冷媒ホ゜ンフ゜を
複数個使用しても良い。It is desirable that the combination of the refrigerant horn and the refrigerant used in the refrigerant circuits B and C is such that the compression ratio becomes 3 when compared with a compressor. Therefore, a plurality of refrigerant hoses may be used.
【００３２】よって、一つの冷凍装置で冷凍ソ゛ーン・冷蔵
ソ゛ーンと空調ソ゛ーンの蒸発温度帯を選んで持つことができ
る。Therefore, one refrigerating apparatus can select and have the evaporating temperature zone of the freezing / refrigerating and air-conditioning sones.
【００３３】また、圧縮機のある一次側冷媒回路と蒸発
器のある二次側冷媒回路を分離しそれぞれを独立させて
いるため、圧縮機のある冷媒回路に封入する冷媒量を一
定とすることができ、封入冷媒量の差による故障を防ぐ
ことができる。Also, since the primary refrigerant circuit with the compressor and the secondary refrigerant circuit with the evaporator are separated and made independent, the amount of refrigerant to be filled in the refrigerant circuit with the compressor must be constant. Therefore, a failure due to a difference in the amount of the charged refrigerant can be prevented.
【００３４】また、HCFC冷媒からHFC冷媒を用いた冷媒
回路に変更する場合、HCFC冷媒サイクルで用いていた冷凍機
油とその化合物や冷媒が冷媒配管に残留していても、そ
の残留物は圧縮機のある一次側冷媒回路と冷凍機油に混
入しないので、圧縮機等の故障を防ぐことができる。Further, when the refrigerant circuit is changed from the HCFC refrigerant to the refrigerant circuit using the HFC refrigerant, even if the refrigerating machine oil used in the HCFC refrigerant cycle and its compound or the refrigerant remain in the refrigerant pipe, the residue remains in the compressor. Since it does not mix with the primary-side refrigerant circuit and the refrigerating machine oil having a problem, it is possible to prevent a failure of the compressor and the like.
【００３５】また、熱交換器４ａと４ｂを圧縮機に対し
て並列接続にする事により、熱交換器４ｂだけで運転し
たい時に熱交換器４ａにも冷媒を通さなくては（４ａも
運転させてなくては）ならない実施の形態１に比べて、
それぞれの熱交換器ａ、ｂが個別に（１個だけの）運転
ができ、利用側冷媒回路Ｂ、Ｃの必要能力に応じた適切
な運転ができる。Further, by connecting the heat exchangers 4a and 4b in parallel with the compressor, when it is desired to operate only the heat exchanger 4b, the refrigerant must be passed through the heat exchanger 4a. Compared to Embodiment 1 in which
Each of the heat exchangers a and b can be operated individually (only one), and an appropriate operation can be performed according to the required capacity of the use-side refrigerant circuits B and C.
【００３６】以上、２つの熱交換器４ａ、４ｂを並列結
合にした冷媒回路を示したが、３つ以上の熱交換器を並
列結合してもよい。その場合には、それらの熱交換器出
口の冷媒圧力をすべて同じにする必要があり、一番低い
圧力に揃えるため、一番低い圧力をもった熱交換器以外
の熱交換器の出口側に圧力調整弁８を設ける必要があ
る。Although the refrigerant circuit in which the two heat exchangers 4a and 4b are connected in parallel has been described above, three or more heat exchangers may be connected in parallel. In such a case, it is necessary to make the refrigerant pressures at the outlets of the heat exchangers all the same, and in order to make them equal to the lowest pressure, the outlet pressures of the heat exchangers other than the heat exchanger having the lowest pressure It is necessary to provide a pressure regulating valve 8.
【００３７】実施の形態３．図３はこの発明の実施の形
態３を示す図である。図１と同様の部分は同一記号を付
し、その説明は省略する。図３において、９は圧縮機で
ある。Embodiment 3 FIG. 3 shows a third embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 3, reference numeral 9 denotes a compressor.
【００３８】圧縮機１、凝縮器２、膨張弁３ａ、３ｂ、
熱交換器４ａ、４ｂ、圧縮機９で１つの一次側（熱源
側）冷媒回路Ａを構成しており、熱交換器４ａ、冷媒ホ゜
ンフ゜５ａ、膨張弁６ａ、６ｂ、蒸発器７ａ、７ｂの冷媒
回路と熱交換器４ｂ、冷媒ホ゜ンフ゜５ｂ、膨張弁６ｃ、６
ｄ、蒸発器７ｃ、７ｄの冷媒回路もそれぞれ独立した二
次側（利用側）冷媒回路Ｂ、Ｃを構成している。The compressor 1, the condenser 2, the expansion valves 3a, 3b,
The heat exchangers 4a, 4b and the compressor 9 constitute one primary side (heat source side) refrigerant circuit A, and the heat exchanger 4a, the refrigerant horn 5a, the expansion valves 6a, 6b, and the refrigerant of the evaporators 7a, 7b Circuit and heat exchanger 4b, refrigerant phone 5b, expansion valves 6c, 6
d, the refrigerant circuits of the evaporators 7c and 7d also constitute independent secondary side (use side) refrigerant circuits B and C, respectively.
【００３９】複数の圧縮機、圧縮機１と圧縮機９によっ
て吐出された冷媒カ゛スは凝縮器２によって熱交換され液
冷媒となり、膨張弁３ａによって絞られ、熱交換器４ａ
によって蒸発温度Ｔ１、例えば10℃で蒸発しその一部の
冷媒は圧縮機９に吸入され、圧縮されて再び吐出され
る。圧縮機９に吸入されない冷媒は膨張弁３ｂによって
絞られ、冷媒は熱交換器４ｂによって蒸発温度Ｔ２（Ｔ
２＜Ｔ１）、例えば、-10℃で蒸発する。熱交換器４ｂ
によって蒸発した冷媒カ゛スは、圧縮機１に吸入され、圧
縮されて再び吐出される。以上、圧縮機９の入口側は熱
交換器４ａ出口が、圧縮機１の入口側に対しては熱交換
器４ｂの出口が１対１に接続されている。The refrigerant gas discharged by the plurality of compressors, the compressor 1 and the compressor 9, undergoes heat exchange by the condenser 2 to become a liquid refrigerant, and is throttled by the expansion valve 3a.
Thus, the refrigerant evaporates at the evaporation temperature T1, for example, 10 ° C., and a part of the refrigerant is sucked into the compressor 9, compressed, and discharged again. The refrigerant that is not sucked into the compressor 9 is throttled by the expansion valve 3b, and the refrigerant is evaporated by the heat exchanger 4b at an evaporation temperature T2 (T
2 <T1), e.g. Heat exchanger 4b
The refrigerant gas evaporated by the suction is sucked into the compressor 1, compressed, and discharged again. As described above, the outlet of the heat exchanger 4a is connected to the inlet side of the compressor 9 and the outlet of the heat exchanger 4b is connected one-to-one to the inlet side of the compressor 1.
【００４０】熱交換器４ａと４ｂによって冷媒回路Ａの
冷媒と冷媒回路Ｂ、Ｃの冷媒と熱交換するようになって
いる。熱交換器４ａによって冷却、凝縮された冷媒回路
Ｂ側の冷媒は、冷媒ホ゜ンフ゜５ａによって冷媒回路Ｂを循
環する。冷媒ホ゜ンフ゜５ａによって押出された冷媒は膨張
弁６ａ、６ｂによって絞られ、蒸発器７ａ、７ｂによっ
て蒸発温度Ｔ３（Ｔ３＞Ｔ１）、例えば15℃で蒸発す
る。蒸発器７ａ、７ｂによって蒸発した冷媒は再び熱交
換器４ａによって冷却、凝縮される。冷媒回路Ｃ側も同
様であるが、蒸発器７ｃ、７ｄの蒸発温度Ｔ４（Ｔ３＞
Ｔ４）は、例えば-5℃となる。The heat exchangers 4a and 4b exchange heat with the refrigerant in the refrigerant circuit A and the refrigerant in the refrigerant circuits B and C. The refrigerant on the refrigerant circuit B side that has been cooled and condensed by the heat exchanger 4a circulates through the refrigerant circuit B by the refrigerant horn 5a. The refrigerant extruded by the refrigerant horn 5a is throttled by the expansion valves 6a and 6b, and is evaporated by the evaporators 7a and 7b at an evaporation temperature T3 (T3> T1), for example, 15 ° C. The refrigerant evaporated by the evaporators 7a and 7b is cooled and condensed again by the heat exchanger 4a. The same applies to the refrigerant circuit C side, but the evaporation temperature T4 (T3>) of the evaporators 7c and 7d.
T4) is, for example, −5 ° C.
【００４１】また、店舗にこの装置を設置する場合、店
舗の大きさによって長さが左右される配管は、冷媒回路
Ｂ、Ｃにおける冷媒ホ゜ンフ゜５ａ、５ｂの出口から膨張弁
６ａ、６ｂ、６ｃ、６ｄの間の配管と、熱交換器７ａ、
７ｂ、７ｃ、７ｄの出口から熱交換器４ａ、４ｂの入口
までの間の配管であるので、圧縮機をもつ冷媒回路Ａの
封入冷媒量は一定とする事ができる。When this apparatus is installed in a store, piping whose length depends on the size of the store is connected to the expansion valves 6a, 6b, 6c, and 6c from the outlets of the refrigerant hoses 5a and 5b in the refrigerant circuits B and C. 6d piping and heat exchanger 7a,
Since it is a pipe from the outlets of 7b, 7c, 7d to the inlets of the heat exchangers 4a, 4b, the amount of refrigerant charged in the refrigerant circuit A having a compressor can be constant.
【００４２】また、店舗の改装時に店舗の中に埋め込ま
れているためにそのまま使用される配管は、上記同様に
冷媒回路Ｂ、Ｃにおける冷媒ホ゜ンフ゜５ａ、５ｂの出口か
ら膨張弁６ａ、６ｂ、６ｃ、６ｄの間の配管と、熱交換
器７ａ、７ｂ、７ｃ、７ｄの出口から熱交換器４ａ、４
ｂの入口までの間の配管であるので、 HCFC冷媒からHFC
冷媒を用いた冷媒回路に変更する場合でも、HCFC冷媒サイ
クルで用いていた冷凍機油とその化合物や冷媒が上記冷媒
配管に残留していても、その残留物は圧縮機のある冷媒
回路Ａに混入しない。Further, the pipes which are used as they are because they are embedded in the store when the store is renovated are connected to the expansion valves 6a, 6b, 6c from the outlets of the refrigerant hoses 5a, 5b in the refrigerant circuits B, C in the same manner as described above. , 6d and outlets of the heat exchangers 7a, 7b, 7c, 7d through the heat exchangers 4a, 4d.
b from the HCFC refrigerant to the HFC
Even when the refrigerant circuit is changed to a refrigerant circuit, even if the refrigerating machine oil and its compound or refrigerant used in the HCFC refrigerant cycle remain in the refrigerant pipe, the residue is mixed into the refrigerant circuit A having the compressor. do not do.
【００４３】また、膨張弁３ａと熱交換器４ａと圧縮機
９と冷媒回路Ｂと同様の組合わせを追加する事により、
同時に３つ以上の蒸発温度帯を持てるようにしても良
い。Further, by adding the same combination as the expansion valve 3a, the heat exchanger 4a, the compressor 9, and the refrigerant circuit B,
It may be possible to have three or more evaporation temperature zones at the same time.
【００４４】また、冷媒回路Ｂ、Ｃに用いる冷媒ホ゜ンフ゜
と冷媒の組合わせは圧縮機でたとえると、圧縮比3とな
るような組合わせが望ましい。そのために冷媒ホ゜ンフ゜を
複数個使用しても良い。It is desirable that the combination of the refrigerant horn and the refrigerant used in the refrigerant circuits B and C is such that the compression ratio becomes 3 when compared with a compressor. Therefore, a plurality of refrigerant hoses may be used.
【００４５】よって、一つの冷凍装置で冷凍ソ゛ーン・冷蔵
ソ゛ーンと空調ソ゛ーンの蒸発温度帯を選んで持つことができ
る。Therefore, one refrigerating apparatus can select and have the evaporating temperature zone of the freezing / refrigerating and air-conditioning sones.
【００４６】また、圧縮機のある一次側冷媒回路と蒸発
器のある二次側冷媒回路を分離しそれぞれを独立させて
いるため、圧縮機のある一次側冷媒回路に封入する冷媒
量を一定とすることができ、封入冷媒量の差による故障
を防ぐことができる。Further, since the primary refrigerant circuit having the compressor and the secondary refrigerant circuit having the evaporator are separated and made independent, the amount of the refrigerant sealed in the primary refrigerant circuit having the compressor is constant. It is possible to prevent a failure due to a difference in the amount of charged refrigerant.
【００４７】また、HCFC冷媒からHFC冷媒を用いた冷媒
回路に変更する場合HCFC冷媒サイクルで用いていた冷凍機油
とその化合物や冷媒が冷媒配管に残留していても、その
残留物は圧縮機のある冷媒回路と冷凍機油に混入しない
ので、圧縮機等の故障を防ぐことができる。Further, when changing from the HCFC refrigerant to the refrigerant circuit using the HFC refrigerant, even if the refrigerating machine oil and its compound or the refrigerant used in the HCFC refrigerant cycle remain in the refrigerant pipe, the residue remains in the compressor. Since it does not mix with a certain refrigerant circuit and refrigerating machine oil, it is possible to prevent failure of the compressor and the like.
【００４８】また、圧縮機１と圧縮機９の２台の圧縮機
があることにより、圧縮機の個別運転、例えば、熱交換
器４ａ運転時は圧縮機９だけが動かせばよく、熱交換器
４ｂだけを停止させることができる。また、実施の形態
２の圧縮機１を例えば１０Ｈｐとすると、本実施の形態
では熱交換器４ａ側に負荷の高い回路を、例えば圧縮機
１を３Ｈｐ、圧縮機９を７Ｈｐとで接続することにより
トータル圧縮機馬力を同じくすることができる。個別運
転時はどちらかの圧縮機１台しか動かないので、実施の
形態２にくらべて運転効率が良い。また、熱交換器４ａ
と４ｂの能力配分が実施の形態１に比べて調節できるの
で、冷媒回路Ｂ、Ｃの必要能力に応じた適切な運転がで
きる。Further, since there are two compressors, the compressor 1 and the compressor 9, only the compressor 9 needs to be operated during the individual operation of the compressor, for example, the operation of the heat exchanger 4a. Only 4b can be stopped. Further, assuming that the compressor 1 of the second embodiment is, for example, 10 Hp, in this embodiment, a high-load circuit is connected to the heat exchanger 4 a side, for example, the compressor 1 is connected to 3 Hp, and the compressor 9 is connected to 7 Hp. As a result, the total compressor horsepower can be made the same. Since only one of the compressors is operated during the individual operation, the operation efficiency is higher than in the second embodiment. Also, the heat exchanger 4a
4b can be adjusted as compared with the first embodiment, so that appropriate operation according to the required capacity of the refrigerant circuits B and C can be performed.
【００４９】以上より、圧縮機が２台でも、３台以上で
も、圧縮機と熱交換器を１対１に接続し、熱交換器の個
別運転を可能とすることにより、効率の良い冷凍装置を
得ることができる。As described above, regardless of whether the number of compressors is two or three or more, the compressor and the heat exchanger are connected in a one-to-one manner, and the individual operation of the heat exchangers is enabled, so that an efficient refrigeration system is provided. Can be obtained.
【００５０】実施の形態４．図４はこの発明の実施の形
態４を示す図である。図１と同様の部分は同一記号を付
し、その説明は省略する。図４において、１０はエジェ
クター、１１は気液分離機、１２は膨張弁である。Embodiment 4 FIG. 4 shows a fourth embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 4, 10 is an ejector, 11 is a gas-liquid separator, and 12 is an expansion valve.
【００５１】この冷凍装置は、圧縮機１、凝縮器２、エ
ジェクター１０、第一の熱交換器４ａ、気液分離機１１
の気層側を連結し、前記気液分離機１１の液層側、膨張
機構である膨張弁１２、第二の熱交換器４ｂとを連結し
冷媒を循環させる一次側（熱源側）冷媒回路Ａを備えて
いる。更に、二次側（利用側）冷媒回路Ｂは熱源側冷媒
回路Ａの熱交換器４ａを熱交換部とし、膨張機構である
膨張弁６ａと蒸発器７ａ、膨張機構である膨張弁６ｂと
蒸発器７ｂ、とを並列に接合し、冷媒ポンプ５ａにて冷
媒回路Ｂ内の冷媒を循環させている。もう一つの二次側
冷媒回路Ｃも冷媒回路Ｂと同様に、熱源側冷媒回路Ａの
熱交換器４ｂを熱交換部とし、膨張機構である膨張弁６
ｃと蒸発器７ｃ、膨張機構である膨張弁６ｄと蒸発器７
ｄ、とを並列に接合し、冷媒ポンプ５ｂにて冷媒回路Ｃ
内の冷媒を循環させている。尚、これらの二次側冷媒回
路Ｂ、冷媒回路Ｃは圧縮機を含まない冷媒回路であっ
て、一次側冷媒回路と独立した回路である。The refrigerating apparatus includes a compressor 1, a condenser 2, an ejector 10, a first heat exchanger 4a, a gas-liquid separator 11
A primary side (heat source side) refrigerant circuit that connects the liquid layer side of the gas-liquid separator 11, the expansion valve 12, which is an expansion mechanism, and the second heat exchanger 4b to circulate the refrigerant. A is provided. Further, the secondary side (use side) refrigerant circuit B uses the heat exchanger 4a of the heat source side refrigerant circuit A as a heat exchange part, and the expansion valve 6a and the evaporator 7a as an expansion mechanism, the expansion valve 6b as an expansion mechanism, and the evaporation. 7b are connected in parallel, and the refrigerant in the refrigerant circuit B is circulated by the refrigerant pump 5a. Similarly to the refrigerant circuit B, another secondary-side refrigerant circuit C uses the heat exchanger 4b of the heat-source-side refrigerant circuit A as a heat exchange unit, and the expansion valve 6 as an expansion mechanism.
c, evaporator 7c, expansion valve 6d as an expansion mechanism, and evaporator 7
and d are connected in parallel, and the refrigerant circuit C
The refrigerant inside is circulated. The secondary-side refrigerant circuit B and the refrigerant circuit C are refrigerant circuits that do not include a compressor, and are circuits independent of the primary-side refrigerant circuit.
【００５２】圧縮機１によって吐出された冷媒カ゛スは凝
縮器２によって熱交換され液冷媒となり、エジェクター
１０によって絞られ、熱交換器４ａによって一部の液冷
媒が蒸発温度Ｔ１、例えば10℃で蒸発する。熱交換器４
ａで熱交換した冷媒は気液分離機１１に吸入され、液体
とカ゛スに分離される。ここで分離された液冷媒は膨張弁
１２によって絞られ、熱交換器４ｂによって蒸発温度Ｔ
２（Ｔ２＜Ｔ１）、例えば、-10℃で蒸発する。熱交換
器４ｂによって蒸発した冷媒カ゛スは、エジェクター１０
に引っ張り込まれ（吸入され）、冷媒回路に合流する。
尚、ここで気液分離機１１を用いたのは、熱交換器４ａ
で蒸発した冷媒（すべてが蒸発してガスになるわけでは
ない）のうち、（ガス冷媒を４ｂに流しては膨張弁１２
は絞れないので）液冷媒のみを取り出して熱交換器４ｂ
に流すためである。The refrigerant gas discharged from the compressor 1 undergoes heat exchange by the condenser 2 to become a liquid refrigerant, is throttled by the ejector 10, and a part of the liquid refrigerant is evaporated by the heat exchanger 4a at an evaporation temperature T1, for example, 10 ° C. I do. Heat exchanger 4
The refrigerant that has exchanged heat in a is drawn into the gas-liquid separator 11 and separated into liquid and gas. The separated liquid refrigerant is throttled by the expansion valve 12, and evaporated by the heat exchanger 4b.
2 (T2 <T1), e.g. The refrigerant gas evaporated by the heat exchanger 4b is ejected by the ejector 10
To the refrigerant circuit.
The reason why the gas-liquid separator 11 is used here is that the heat exchanger 4a
Of the refrigerant (not all of which evaporates to gas) at the expansion valve 12
Only the liquid refrigerant is taken out and the heat exchanger 4b
It is for flowing.
【００５３】熱交換器４ａと４ｂによって一次側冷媒回
路Ａの冷媒と二次側冷媒回路Ｂ、Ｃの冷媒と熱交換する
ようになっている。熱交換器４ａによって冷却、凝縮さ
れた冷媒回路Ｂ側の冷媒は、冷媒ホ゜ンフ゜５ａによって冷
媒回路Ｂを循環する。冷媒ホ゜ンフ゜５ａによって押し出さ
れた冷媒は膨張弁６ａ、６ｂによって絞られ、蒸発器７
ａ、７ｂによって蒸発温度Ｔ３（Ｔ３＞Ｔ１）、例えば
15℃で蒸発する。蒸発器７ａ、７ｂによって蒸発した冷
媒は再び熱交換器４ａによって冷却、凝縮される。冷媒
回路Ｃ側も同様であるが、蒸発器７ｃ、７ｄの蒸発温度
Ｔ４（Ｔ３＞Ｔ４）は、例えば-5℃となる。The heat exchangers 4a and 4b exchange heat with the refrigerant in the primary refrigerant circuit A and the refrigerant in the secondary refrigerant circuits B and C. The refrigerant on the refrigerant circuit B side that has been cooled and condensed by the heat exchanger 4a circulates through the refrigerant circuit B by the refrigerant horn 5a. The refrigerant pushed out by the refrigerant horn 5a is throttled by the expansion valves 6a and 6b, and
a, 7b, the evaporation temperature T3 (T3> T1), for example,
Evaporate at 15 ° C. The refrigerant evaporated by the evaporators 7a and 7b is cooled and condensed again by the heat exchanger 4a. The same applies to the refrigerant circuit C side, but the evaporation temperature T4 (T3> T4) of the evaporators 7c and 7d is, for example, -5 ° C.
【００５４】また、店舗にこの装置を設置する場合、店
舗の大きさによって長さが左右される配管は、冷媒回路
Ｂ、Ｃにおける冷媒ホ゜ンフ゜５ａ、５ｂの出口から膨張弁
６ａ、６ｂ、６ｃ、６ｄの間の配管と、熱交換器７ａ、
７ｂ、７ｃ、７ｄの出口から熱交換器４ａ、４ｂの入口
までの間の配管であるので、圧縮機をもつ冷媒回路Ａの
封入冷媒量は一定とする事ができる。When this apparatus is installed in a store, piping whose length depends on the size of the store is connected to the expansion valves 6a, 6b, 6c, 6c from the outlets of the refrigerant hoses 5a, 5b in the refrigerant circuits B, C. 6d piping and heat exchanger 7a,
Since it is a pipe from the outlets of 7b, 7c, 7d to the inlets of the heat exchangers 4a, 4b, the amount of refrigerant charged in the refrigerant circuit A having a compressor can be constant.
【００５５】また、店舗の改装時に店舗の中に埋め込ま
れているためにそのまま使用される配管は、上記同様に
冷媒回路Ｂ、Ｃにおける冷媒ホ゜ンフ゜５ａ、５ｂの出口か
ら膨張弁６ａ、６ｂ、６ｃ、６ｄの間の配管と、熱交換
器７ａ、７ｂ、７ｃ、７ｄの出口から熱交換器４ａ、４
ｂの入口までの間の配管であるので、 HCFC冷媒からHFC
冷媒を用いた冷媒回路に変更する場合でも、HCFC冷媒サイ
クルで用いていた冷凍機油とその化合物や冷媒が上記冷媒
配管に残留していても、その残留物は圧縮機のある冷媒
回路Ａに混入しない。Further, the pipes which are used as they are because they are embedded in the store when the store is remodeled are connected to the expansion valves 6a, 6b, 6c from the outlets of the refrigerant hoses 5a, 5b in the refrigerant circuits B, C in the same manner as described above. , 6d and outlets of the heat exchangers 7a, 7b, 7c, 7d through the heat exchangers 4a, 4d.
b from the HCFC refrigerant to the HFC
Even when the refrigerant circuit is changed to a refrigerant circuit, even if the refrigerating machine oil and its compound or refrigerant used in the HCFC refrigerant cycle remain in the refrigerant pipe, the residue is mixed into the refrigerant circuit A having the compressor. do not do.
【００５６】また、冷媒回路Ｂ、Ｃに用いる冷媒ホ゜ンフ゜
と冷媒の組合わせは圧縮機でたとえると、圧縮比3とな
るような組合わせが望ましい。そのために冷媒ホ゜ンフ゜を
複数個使用しても良い。Further, the combination of the refrigerant horn and the refrigerant used in the refrigerant circuits B and C is preferably such that the compression ratio becomes 3 when compared with a compressor. Therefore, a plurality of refrigerant hoses may be used.
【００５７】よって、一つの冷凍装置で冷凍ソ゛ーン・冷蔵
ソ゛ーンと空調ソ゛ーンの蒸発温度帯を選んで持つことができ
る。Therefore, one refrigerating apparatus can select and have the evaporating temperature zone of the freezing / refrigerating and air-conditioning sones.
【００５８】また、圧縮機のある一次側冷媒回路と蒸発
器のある二次側冷媒回路を分離しそれぞれを独立させて
いるため、圧縮機のある冷媒回路に封入する冷媒量を一
定とすることができ、封入冷媒量の差による故障を防ぐ
ことができる。Also, since the primary refrigerant circuit with the compressor and the secondary refrigerant circuit with the evaporator are separated and made independent, the amount of refrigerant to be sealed in the refrigerant circuit with the compressor must be constant. Therefore, a failure due to a difference in the amount of the charged refrigerant can be prevented.
【００５９】また、HCFC冷媒からHFC冷媒を用いた冷媒
回路に変更する場合HCFC冷媒サイクルで用いていた冷凍機油
とその化合物や冷媒が冷媒配管に残留していても、その
残留物は圧縮機のある冷媒回路と冷凍機油に混入しない
ので、圧縮機等の故障を防ぐことができる。When the refrigerant circuit is changed from the HCFC refrigerant to the refrigerant circuit using the HFC refrigerant, even if the refrigerating machine oil and its compound or the refrigerant used in the HCFC refrigerant cycle remain in the refrigerant pipe, the residue remains in the compressor. Since it does not mix with a certain refrigerant circuit and refrigerating machine oil, it is possible to prevent failure of the compressor and the like.
【００６０】以上、エジェクター10を用いることによ
り、熱交換器４ａ後の蒸発圧力に依存して圧縮機が運転
できる、すなわち蒸発温度の高い方の圧力で運転できる
ため、実施の形態１に比べて、熱交換器４ｂ後の蒸発圧
力で圧縮機を運転するよりも高率の良い運転ができる。As described above, by using the ejector 10, the compressor can be operated depending on the evaporating pressure after the heat exchanger 4a, that is, the compressor can be operated at the higher pressure of the evaporating temperature. Thus, the operation can be performed at a higher rate than when the compressor is operated at the evaporation pressure after the heat exchanger 4b.
【００６１】尚、以上実施の形態１〜実施の形態４で
は、一次側冷媒回路Ａの低温側である蒸発側熱交換器４
ａ、４ｂに対応する二次側冷媒回路Ｂ、Ｃの冷凍装置に
ついて記載したが、一次側冷媒回路Ａの高温側である凝
縮器２を凝縮側熱交換器として複数設け、その凝縮側熱
交換器と熱交換する熱交換部を設けた二次側冷媒回路を
複数設けたもの（蒸発側熱交換器は蒸発器とする）も同
様の作用・効果を奏する。In the first to fourth embodiments, the evaporating heat exchanger 4 which is the low temperature side of the primary refrigerant circuit A is used.
Although the refrigerating apparatus of the secondary refrigerant circuits B and C corresponding to a and 4b has been described, a plurality of condensers 2 on the high-temperature side of the primary refrigerant circuit A are provided as condensing-side heat exchangers, and the condensing-side heat exchange thereof is performed. A plurality of secondary-side refrigerant circuits provided with a heat exchange section for exchanging heat with the heat exchanger (the evaporator is an evaporator on the evaporator side) have the same effect.
【００６２】また、実施の形態１〜実施の形態４にて、
７ａ、７ｂ、７ｃ、７ｄを蒸発器としたが、いずれも熱
交換器としても良い。In the first to fourth embodiments,
Although 7a, 7b, 7c, and 7d are evaporators, any of them may be heat exchangers.
【００６３】また、二次側冷媒回路については、空調温
度帯（ソ゛ーン）と冷蔵温度帯（ソ゛ーン）の二つの蒸発温度帯
をもつ冷凍機器を示したが、一次側冷媒回路Ａの膨張弁
３ａ、３ｂの絞りの調節により、二つの蒸発温度帯の組
合わせは次のように変えることも可能である。空調温度
帯で二つの蒸発温度帯、冷蔵温度帯で二つの蒸発温度
帯、冷凍温度帯で二つの温度帯、また、空調温度帯と冷
凍温度帯、冷蔵温度帯と冷凍温度帯の組合わせも可能で
ある。As for the secondary-side refrigerant circuit, a refrigerating machine having two evaporation temperature zones of an air-conditioning temperature zone (zone) and a refrigeration temperature zone (zone) is shown. By adjusting the throttle of 3b, the combination of the two evaporation temperature zones can be changed as follows. Two evaporation temperature zones in the air conditioning temperature zone, two evaporation temperature zones in the refrigeration temperature zone, two temperature zones in the freezing temperature zone, and combinations of the air conditioning temperature zone and the freezing temperature zone, the refrigeration temperature zone and the freezing temperature zone are also available. It is possible.
【００６４】なお、冷凍（一部の冷蔵）ソ゛ーンの蒸発温度
帯を出す二次側冷媒回路で配管が氷結する場合には、氷
結防止のため冷媒配管カバー等を設けて断熱する。In the case where the piping freezes in the secondary-side refrigerant circuit that produces the evaporation temperature range of the frozen (partially refrigerated) zone, a heat insulation is provided by providing a refrigerant piping cover or the like to prevent the formation of ice.
【００６５】[0065]
【発明の効果】この発明に係わる冷凍装置は、圧縮機、
凝縮器、膨張機構、複数の熱交換器を連結し冷媒を循環
させ、各々の熱交換器の間には膨張機構を設けた熱源側
冷媒回路と、熱交換器と熱交換し、熱源側冷媒回路とは
独立した利用側冷媒回路を複数設けたので、ひとつの冷
凍装置にて複数の蒸発温度帯をもつことできると共に、
冷媒回路内の冷媒の変更を容易に行なえるようになっ
た。The refrigerating apparatus according to the present invention comprises a compressor,
A condenser, an expansion mechanism, and a plurality of heat exchangers are connected to circulate the refrigerant, and a heat source side refrigerant circuit having an expansion mechanism between each heat exchanger, and heat exchange with the heat exchanger, and a heat source side refrigerant Since a plurality of use-side refrigerant circuits independent of the circuit are provided, one refrigeration apparatus can have a plurality of evaporation temperature zones,
The refrigerant in the refrigerant circuit can be easily changed.
【００６６】また、この発明に係わる冷凍装置は、圧縮
機、凝縮器、膨張機構、複数の熱交換器を連結し冷媒を
循環させ、複数の熱交換器のいくつかを圧縮機に対して
並列接続し、並列接続した各熱交換器のうち、冷媒出口
側の冷媒圧力が最低のもの以外の熱交換器の冷媒出口側
に圧力調整弁を設けた熱源側冷媒回路と、熱交換器と熱
交換し、熱源側冷媒回路とは独立した利用側冷媒回路を
複数設けたので、ひとつの冷凍装置にて複数の蒸発温度
帯をもつことできると共に、熱交換器の個別運転が可能
となり、利用側冷媒回路の必要能力に応じた適切な運転
ができるようになった。Further, the refrigeration apparatus according to the present invention connects a compressor, a condenser, an expansion mechanism, and a plurality of heat exchangers to circulate a refrigerant, and connects some of the plurality of heat exchangers to the compressor in parallel. A heat source side refrigerant circuit having a pressure regulating valve provided on the refrigerant outlet side of the heat exchangers other than the one having the lowest refrigerant pressure among the heat exchangers connected and connected in parallel, the heat exchanger and the heat exchanger. Since a plurality of use-side refrigerant circuits are provided separately from the heat-source-side refrigerant circuit, a single refrigerating apparatus can have a plurality of evaporating temperature zones, and the individual operation of the heat exchanger can be performed. Appropriate operation according to the required capacity of the refrigerant circuit has become possible.
【００６７】また、この発明に係わる冷凍装置は、複数
の圧縮機、凝縮器、膨張機構、複数の熱交換器を連結し
冷媒を循環させ、複数の各圧縮機の冷媒入口側は複数の
各熱交換器の冷媒出口側に１対１に接続される熱源側冷
媒回路と、熱交換器と熱交換し、熱源側冷媒回路とは独
立した利用側冷媒回路を複数設けたので、ひとつの冷凍
装置にて複数の蒸発温度帯をもつことできると共に、熱
交換器の個別運転が可能となり効率が良くなった。The refrigerating apparatus according to the present invention connects a plurality of compressors, a condenser, an expansion mechanism, and a plurality of heat exchangers to circulate the refrigerant, and the refrigerant inlet side of each of the plurality of compressors has a plurality of refrigerant inlets. Since a heat source side refrigerant circuit connected one-to-one to the refrigerant outlet side of the heat exchanger and a plurality of utilization side refrigerant circuits which exchange heat with the heat exchanger and are independent of the heat source side refrigerant circuit are provided, one refrigeration circuit is provided. The device can have a plurality of evaporating temperature zones, and the individual operation of the heat exchanger is made possible, thus improving the efficiency.
【００６８】また、この発明に係わる冷凍装置は、圧縮
機、凝縮器、エジェクター、第一の熱交換器、気液分離
機の気層側を連結し、気液分離機の液層側、膨張機構、
第二の熱交換器、エジェクターとを連結し冷媒を循環さ
せる熱源側冷媒回路と、熱交換器と熱交換し、熱源側冷
媒回路とは独立した利用側冷媒回路を複数設けたので、
ひとつの冷凍装置にて複数の蒸発温度帯をもつことでき
ると共に、熱交換器の個別運転が可能となり、蒸発温度
の高い方の熱交換器の圧力で圧縮機が運転する事ができ
るようになり、効率が良くなった。The refrigeration apparatus according to the present invention connects the compressor, the condenser, the ejector, the first heat exchanger, and the gas layer side of the gas-liquid separator, and connects the liquid layer side of the gas-liquid separator to the expansion. mechanism,
Since the second heat exchanger, a heat source side refrigerant circuit that connects the ejector and circulates the refrigerant, heat exchange with the heat exchanger, and provided a plurality of utilization side refrigerant circuits independent of the heat source side refrigerant circuit,
A single refrigeration system can have multiple evaporating temperature zones, and individual operation of heat exchangers is possible, allowing the compressor to operate at the pressure of the heat exchanger with the higher evaporating temperature. , Improved efficiency.
【００６９】また、この発明に係わる冷凍装置は、利用
側冷媒回路はポンプ、膨張弁、蒸発器を備えたので、ひ
とつの冷凍装置にて複数の蒸発温度帯をもつことできる
と共に、安定した運転のできる信頼性の高い冷凍装置を
提供できる。Further, in the refrigerating apparatus according to the present invention, since the use side refrigerant circuit is provided with a pump, an expansion valve, and an evaporator, one refrigerating apparatus can have a plurality of evaporating temperature zones and can operate stably. And a highly reliable refrigeration system that can be provided.
【００７０】また、この発明に係わる冷凍装置は、圧縮
機、複数の熱交換器、膨張機構、蒸発器を連結し冷媒を
循環させ、各々の熱交換器の間には膨張機構を設けた熱
源側冷媒回路と、熱交換器と熱交換し、熱源側冷媒回路
とは独立した利用側冷媒回路を複数設けたので、ひとつ
の冷凍装置にて複数の凝縮温度帯をもつことできると共
に、冷媒回路内の冷媒の変更を容易に行なえるようにな
った。Further, the refrigeration apparatus according to the present invention connects a compressor, a plurality of heat exchangers, an expansion mechanism, and an evaporator to circulate a refrigerant, and a heat source having an expansion mechanism provided between each heat exchanger. Since a plurality of use-side refrigerant circuits that exchange heat with the side refrigerant circuit and the heat exchanger and are independent of the heat-source-side refrigerant circuit are provided, a single refrigerating apparatus can have a plurality of condensing temperature zones, and a refrigerant circuit. It is now possible to easily change the refrigerant inside.
【図１】 この発明の実施の形態１を示す冷凍装置の冷
媒回路。FIG. 1 is a refrigerant circuit of a refrigeration apparatus according to Embodiment 1 of the present invention.
【図２】 この発明の実施の形態２を示す冷凍装置の冷
媒回路。FIG. 2 is a refrigerant circuit of a refrigeration apparatus according to Embodiment 2 of the present invention.
【図３】 この発明の実施の形態３を示す冷凍装置の冷
媒回路。FIG. 3 is a refrigerant circuit of a refrigeration apparatus according to Embodiment 3 of the present invention.
【図４】 この発明の実施の形態４を示す冷凍装置の冷
媒回路。FIG. 4 is a refrigerant circuit of a refrigeration apparatus according to Embodiment 4 of the present invention.
【図５】 従来の冷凍装置の冷媒回路。FIG. 5 is a refrigerant circuit of a conventional refrigeration apparatus.
１ 圧縮機、２ 凝縮器、３ａ 膨張弁、３ｂ 膨張
弁、４ａ 熱交換器、４ｂ 熱交換器、５ａ 冷媒ホ゜ンフ
゜、５ｂ 冷媒ホ゜ンフ゜、６ａ 膨張弁、６ｂ 膨張弁、６
ｃ 膨張弁、６ｄ 膨張弁、７ａ 蒸発器、７ｂ 蒸発
器、７ｃ 蒸発器、７ｄ 蒸発器、８ 圧力調整弁、９
圧縮機、１０ エジェクター、１１ 気液分離機。DESCRIPTION OF SYMBOLS 1 Compressor, 2 condenser, 3a expansion valve, 3b expansion valve, 4a heat exchanger, 4b heat exchanger, 5a refrigerant hose, 5b refrigerant hose, 6a expansion valve, 6b expansion valve, 6
c expansion valve, 6d expansion valve, 7a evaporator, 7b evaporator, 7c evaporator, 7d evaporator, 8 pressure regulating valve, 9
Compressor, 10 ejector, 11 gas-liquid separator.
Claims (6)
換器を連結し冷媒を循環させ、各々の熱交換器の間には
膨張機構を設けた熱源側冷媒回路と、前記熱交換器と熱
交換し、前記熱源側冷媒回路とは独立した利用側冷媒回
路を複数設けたことを特徴とする冷凍装置。1. A heat source side refrigerant circuit having a compressor, a condenser, an expansion mechanism, and a plurality of heat exchangers connected to circulate a refrigerant, wherein an expansion mechanism is provided between the heat exchangers. A refrigeration apparatus, wherein a plurality of use-side refrigerant circuits are provided, which exchange heat with a heat exchanger and are independent of the heat-source-side refrigerant circuit.
換器を連結し冷媒を循環させ、前記複数の熱交換器のい
くつかを前記圧縮機に対して並列接続し、前記並列接続
した各熱交換器のうち、冷媒出口側の冷媒圧力が最低の
もの以外の熱交換器の冷媒出口側に圧力調整弁を設けた
熱源側冷媒回路と、前記熱交換器と熱交換し、前記熱源
側冷媒回路とは独立した利用側冷媒回路を複数設けたこ
とを特徴とする冷凍装置。2. A compressor, a condenser, an expansion mechanism, and a plurality of heat exchangers are connected to circulate a refrigerant, and some of the plurality of heat exchangers are connected in parallel to the compressor. Among the heat exchangers, the refrigerant pressure on the refrigerant outlet side of the heat exchanger other than the lowest refrigerant pressure on the refrigerant outlet side, a heat source side refrigerant circuit provided with a pressure regulating valve, heat exchange with the heat exchanger, A refrigeration apparatus comprising a plurality of use-side refrigerant circuits independent of a heat-source-side refrigerant circuit.
の熱交換器を連結し冷媒を循環させ、前記複数の各圧縮
機の冷媒入口側は前記複数の各熱交換器の冷媒出口側に
１対１に接続される熱源側冷媒回路と、前記熱交換器と
熱交換し、前記熱源側冷媒回路とは独立した利用側冷媒
回路を複数設けたことを特徴とする冷凍装置。3. A plurality of compressors, a condenser, an expansion mechanism, and a plurality of heat exchangers are connected to circulate a refrigerant, and a refrigerant inlet side of each of the plurality of compressors is a refrigerant outlet of each of the plurality of heat exchangers. A refrigeration system comprising: a heat source side refrigerant circuit connected one-to-one with the heat exchanger; and a plurality of use side refrigerant circuits that exchange heat with the heat exchanger and are independent of the heat source side refrigerant circuit.
熱交換器、気液分離機の気層側を連結し、前記気液分離
機の液層側、膨張機構、第二の熱交換器、前記エジェク
ターとを連結し冷媒を循環させる熱源側冷媒回路と、前
記熱交換器と熱交換し、前記熱源側冷媒回路とは独立し
た利用側冷媒回路を複数設けたことを特徴とする冷凍装
置。4. A compressor, a condenser, an ejector, a first heat exchanger, a gas layer side of a gas-liquid separator, and a liquid layer side of the gas-liquid separator, an expansion mechanism, and a second heat exchange. A refrigeration system comprising: a heat source-side refrigerant circuit that connects a heat exchanger and the ejector to circulate a refrigerant; and a plurality of use-side refrigerant circuits that exchange heat with the heat exchanger and are independent of the heat source-side refrigerant circuit. apparatus.
器を備えたことを特徴とする請求項１乃至請求項４のい
ずれかに記載の冷凍装置。5. The refrigeration apparatus according to claim 1, wherein the use-side refrigerant circuit includes a pump, an expansion valve, and an evaporator.
発器を連結し冷媒を循環させ、各々の熱交換器の間には
膨張機構を設けた熱源側冷媒回路と、前記熱交換器と熱
交換し、前記熱源側冷媒回路とは独立した利用側冷媒回
路を複数設けたことを特徴とする冷凍装置。6. A heat source side refrigerant circuit having a compressor, a plurality of heat exchangers, an expansion mechanism, and an evaporator connected to circulate a refrigerant, wherein an expansion mechanism is provided between the heat exchangers. A refrigeration apparatus, wherein a plurality of use-side refrigerant circuits are provided, which exchange heat with a heat exchanger and are independent of the heat-source-side refrigerant circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11035415A JP2000234813A (en) | 1999-02-15 | 1999-02-15 | Refrigerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11035415A JP2000234813A (en) | 1999-02-15 | 1999-02-15 | Refrigerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000234813A true JP2000234813A (en) | 2000-08-29 |
Family
ID=12441256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11035415A Pending JP2000234813A (en) | 1999-02-15 | 1999-02-15 | Refrigerating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000234813A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090635A (en) * | 2001-09-19 | 2003-03-28 | Denso Corp | Ejector cycle |
| WO2004059226A1 (en) * | 2002-12-18 | 2004-07-15 | Kendro Laboratory Products, Lp | Dual independent chamber ultra-low temperature freezer |
| KR100738343B1 (en) | 2006-03-31 | 2007-07-12 | 최인기 | Method for controlling compound air conditioning system |
| WO2011142414A1 (en) * | 2010-05-14 | 2011-11-17 | 三浦工業株式会社 | Heat pump steam generating device |
| JP2012042205A (en) * | 2010-05-14 | 2012-03-01 | Miura Co Ltd | Heat pump steam generating device |
| CN102706034A (en) * | 2012-01-05 | 2012-10-03 | 王全龄 | Single-double-stage complementary-type one-support-multiple wind energy heat pump air conditioner |
| KR101337712B1 (en) * | 2011-11-28 | 2013-12-06 | 엘지전자 주식회사 | A cascade heat pump |
| JP2014163533A (en) * | 2013-02-21 | 2014-09-08 | Mitsubishi Electric Corp | Freezing apparatus |
| CN107024018A (en) * | 2017-04-28 | 2017-08-08 | 同济大学 | A kind of pluggable multiple refrigerating heat pump unit based on end independent loops |
| JPWO2021065943A1 (en) * | 2019-09-30 | 2021-04-08 |
-
1999
- 1999-02-15 JP JP11035415A patent/JP2000234813A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090635A (en) * | 2001-09-19 | 2003-03-28 | Denso Corp | Ejector cycle |
| JP4599782B2 (en) * | 2001-09-19 | 2010-12-15 | 株式会社デンソー | Refrigeration cycle using ejector |
| WO2004059226A1 (en) * | 2002-12-18 | 2004-07-15 | Kendro Laboratory Products, Lp | Dual independent chamber ultra-low temperature freezer |
| KR100738343B1 (en) | 2006-03-31 | 2007-07-12 | 최인기 | Method for controlling compound air conditioning system |
| JP2012042205A (en) * | 2010-05-14 | 2012-03-01 | Miura Co Ltd | Heat pump steam generating device |
| JP2011257122A (en) * | 2010-05-14 | 2011-12-22 | Miura Co Ltd | Heat pump steam generator |
| WO2011142414A1 (en) * | 2010-05-14 | 2011-11-17 | 三浦工業株式会社 | Heat pump steam generating device |
| KR101337712B1 (en) * | 2011-11-28 | 2013-12-06 | 엘지전자 주식회사 | A cascade heat pump |
| CN102706034A (en) * | 2012-01-05 | 2012-10-03 | 王全龄 | Single-double-stage complementary-type one-support-multiple wind energy heat pump air conditioner |
| CN102706034B (en) * | 2012-01-05 | 2015-03-25 | 王全龄 | Single-double-stage complementary-type one-support-multiple wind energy heat pump air conditioner |
| JP2014163533A (en) * | 2013-02-21 | 2014-09-08 | Mitsubishi Electric Corp | Freezing apparatus |
| CN107024018A (en) * | 2017-04-28 | 2017-08-08 | 同济大学 | A kind of pluggable multiple refrigerating heat pump unit based on end independent loops |
| CN107024018B (en) * | 2017-04-28 | 2019-10-01 | 同济大学 | A kind of pluggable multiple refrigerating heat pump unit based on end independent loops |
| JPWO2021065943A1 (en) * | 2019-09-30 | 2021-04-08 |
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