JPH0470543B2 - - Google Patents
Info
- Publication number
- JPH0470543B2 JPH0470543B2 JP60275562A JP27556285A JPH0470543B2 JP H0470543 B2 JPH0470543 B2 JP H0470543B2 JP 60275562 A JP60275562 A JP 60275562A JP 27556285 A JP27556285 A JP 27556285A JP H0470543 B2 JPH0470543 B2 JP H0470543B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- case
- compressor
- condensing unit
- cases
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003507 refrigerant Substances 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 14
- 238000005057 refrigeration Methods 0.000 claims 1
- 235000013611 frozen food Nutrition 0.000 description 13
- 239000007788 liquid Substances 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 235000012055 fruits and vegetables Nutrition 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019688 fish Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Freezers Or Refrigerated Showcases (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、食品店舗に設置されるシヨーケー
ス冷却システムに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shop case cooling system installed in a food store.
一般に食品店舗では青果、鮮魚、精肉および冷
凍食品等を販売するので庫内温度の異なるシヨー
ケースを複数台設置せねばならない。この場合、
青果あるいは鮮魚、精肉等の生鮮用シヨーケース
の設計蒸発温度は−５〜−10℃であり、冷凍食品
用シヨーケースの設計蒸発温度は−40℃である。
このように庫内温度が大幅に異なつているので、
従来の冷却システムは第２図に示すように構成さ
れていた。図において、１，２，３は青果および
生鮮用シヨーケースで、これらシヨーケースには
各々蒸発器４，５，６および絞り装置７，８，９
が収容されており、冷媒配管１０により第１のコ
ンデンシングユニツト１１に接続されている。１
２，１３は冷凍食品用シヨーケースで、１４，１
５は蒸発器、１６，１７は絞り装置で、同様にシ
ヨーケース１２，１３内に各々収容されており、
冷媒配管１８によつて第２のコンデンシングユニ
ツト１９に接続されている。なお、図中、１１ａ
と１９ａは圧縮機、１１ｂと１９ｂは凝縮器、１
１ｃと１９ｃは液溜を示す。
Generally, food stores sell fruits and vegetables, fresh fish, meat, frozen foods, etc., and therefore must have multiple cases with different internal temperatures. in this case,
The designed evaporation temperature of a case for fresh produce such as fruits and vegetables, fresh fish, meat, etc. is -5 to -10°C, and the designed evaporation temperature of a case for frozen food is -40°C.
As the temperature inside the refrigerator varies greatly,
A conventional cooling system was constructed as shown in FIG. In the figure, 1, 2, and 3 are cases for fruits and vegetables, and these cases include evaporators 4, 5, 6, and squeezing devices 7, 8, and 9, respectively.
is housed therein, and is connected to a first condensing unit 11 by a refrigerant pipe 10. 1
2, 13 is a case for frozen food, 14, 1
5 is an evaporator, 16 and 17 are throttle devices, which are similarly housed in show cases 12 and 13, respectively.
It is connected to a second condensing unit 19 by a refrigerant pipe 18. In addition, in the figure, 11a
and 19a are compressors, 11b and 19b are condensers, 1
1c and 19c indicate liquid reservoirs.
次に動作について説明する。第１のコンデンシ
ングユニツト１１の圧縮機１１ａが駆動して吐出
された冷媒は凝縮器１１ｂで液化される。この液
冷媒は液溜１１ｃから液配管１０ａを経て絞り装
置７，８，９にて減圧され、蒸発器４，５，６に
よつて庫内空気と熱交換して気化し、吸入配管１
０ｂを通つて再び圧縮機１１ａに吸入される。上
記の運転によつてシヨーケース１，２，３は庫内
温度が０〜10℃に冷却される。また第２のコンデ
ンシングユニツト１９も上記と同様に作用しシヨ
ーケース１２，１３の庫内温度は約−20℃に冷却
される。 Next, the operation will be explained. The refrigerant discharged by the compressor 11a of the first condensing unit 11 is liquefied in the condenser 11b. This liquid refrigerant passes through the liquid pipe 10a from the liquid reservoir 11c, is depressurized by the throttling devices 7, 8, and 9, and is vaporized by exchanging heat with the air in the refrigerator by the evaporators 4, 5, and 6, and is then vaporized by the suction pipe 10a.
0b and is sucked into the compressor 11a again. Through the above-described operation, the internal temperature of the cases 1, 2, and 3 is cooled to 0 to 10°C. Further, the second condensing unit 19 also operates in the same manner as described above, and the internal temperature of the show cases 12 and 13 is cooled to about -20°C.
従来のシヨーケース冷却システムは以上のよう
に構成されているので、コンデンシングユニツト
が２台設置される広いスペースを必要とする。ま
た冷媒配管も２系統必要とするため工事費が高く
なる問題点があつた。さらに冷凍食品シヨーケー
スは蒸発温度が低いため冷媒としてR502を用い
るが、液配管１８ａが長いために高価なR502の
充填量が多くなる上、吸入配管１８ｂでの圧力損
失のため、冷却能力が低下し効率が低くなる等の
問題点があつた。
Since the conventional case cooling system is configured as described above, it requires a large space in which two condensing units can be installed. In addition, two systems of refrigerant piping were required, which caused the problem of high construction costs. Furthermore, frozen food cases use R502 as a refrigerant due to its low evaporation temperature, but the long liquid pipe 18a requires a large amount of expensive R502 to be filled, and the cooling capacity decreases due to pressure loss in the suction pipe 18b. There were problems such as low efficiency.
この発明は上記のような問題点を解消するため
になされたもので、１台のコンデンシングユニツ
トで庫内の異なる複数台のシヨーケースを冷却す
ることのできるシヨーケース冷却システムを得る
ことを目的とする。 This invention was made to solve the above-mentioned problems, and its purpose is to provide a case cooling system that can cool a plurality of different case cases in a refrigerator with one condensing unit. .
この発明に係るシヨーケース冷却システムは、
冷凍食品用シヨーケースに圧縮機と冷媒熱交換器
を収納し、この圧縮機と冷媒交換器とに蒸発器お
よび絞り装置を接続して冷媒回路を構成し、上記
冷媒熱交換器によつて生鮮シヨーケースの冷媒回
路の冷媒と熱交換するものである。
The case cooling system according to this invention includes:
A compressor and a refrigerant heat exchanger are housed in a frozen food case, and an evaporator and a throttling device are connected to the compressor and refrigerant exchanger to form a refrigerant circuit. It exchanges heat with the refrigerant in the refrigerant circuit.
この発明におけるシヨーケース冷却システム
は、冷凍食品用シヨーケースの冷媒交換器によつ
て生鮮シヨーケースの冷媒回路の冷媒と熱交換す
るようにしたので、冷凍食品用シヨーケースの凝
縮熱が冷媒熱交換器を介して生鮮シヨーケース用
のコンデンシングユニツトにて処理することがで
きる。これにより１台のコンデンシングユニツト
で庫内温度の異なる複数台のシヨーケースを効率
よく冷却可能となる。
In the case cooling system of the present invention, heat is exchanged with the refrigerant in the refrigerant circuit of the fresh case by the refrigerant exchanger of the case for frozen food, so that the heat of condensation in the case for frozen food is transferred through the refrigerant heat exchanger. It can be processed in a condensing unit for fresh produce. This allows a single condensing unit to efficiently cool multiple cases with different internal temperatures.
以下この発明の一実施例を図について説明す
る。第１図はシヨーケース冷却システムを示すも
ので、第２図に示した従来の冷却システムと同一
符号は同じ部分であるので説明は省略する。図に
おいて、２０，２１は冷凍食品用シヨーケース１
２，１３に各々収納した冷媒熱交換器、２２，２
３は同じく冷凍食品用シヨーケース１２，１３に
各々収納した第２の圧縮機で、これら冷媒熱交換
器２０，２１と第２の圧縮機２２，２３は冷凍食
品用シヨーケースの蒸発器１４，１５および絞り
装置１６，１７とそれぞれ接続されている。２
４，２５は第２の絞り装置である。
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a case cooling system, and the same reference numerals refer to the same parts as in the conventional cooling system shown in FIG. 2, so a description thereof will be omitted. In the figure, 20 and 21 are frozen food case 1.
Refrigerant heat exchangers housed in 2 and 13, respectively, 22 and 2
3 is a second compressor housed in the frozen food case 12, 13, respectively, and these refrigerant heat exchangers 20, 21 and second compressors 22, 23 are connected to the evaporators 14, 15 and 3 of the frozen food case. They are connected to aperture devices 16 and 17, respectively. 2
4 and 25 are second diaphragm devices.
次に動作について説明する。生鮮用シヨーケー
ス１，２，３の動作については従来の説明と同じ
であるのでここで省略する。さて冷凍食品用シヨ
ーケース１２において第２の圧縮機２２から吐出
された冷媒は冷媒熱交換器２０へ流入する。この
冷媒熱交換器２０には液配管１０ａ内の液冷媒が
絞り装置２４によつて減圧されて流入しており、
これにより低圧低温の気液混合冷媒と上記圧縮機
２２から吐出された冷媒ガスが熱交換され、冷媒
ガスは液化する。一方、気液混合冷媒は気化し吸
入配管１０ｂより第１の圧縮機１１ａに吸引され
る。そして上記液冷媒は絞り装置１６に通つて蒸
発器１４にて庫内空気と熱交換して蒸発し、第２
の圧縮機２２へ吸入される。なお、シヨーケース
１３については上記したシヨーケース１２と同様
の作用が行われる。 Next, the operation will be explained. The operation of the fresh produce cases 1, 2, and 3 is the same as the conventional explanation, so the explanation will be omitted here. Now, in the frozen food case 12, the refrigerant discharged from the second compressor 22 flows into the refrigerant heat exchanger 20. The liquid refrigerant in the liquid pipe 10a flows into the refrigerant heat exchanger 20 after being depressurized by the expansion device 24.
As a result, heat is exchanged between the low-pressure, low-temperature gas-liquid mixed refrigerant and the refrigerant gas discharged from the compressor 22, and the refrigerant gas is liquefied. On the other hand, the gas-liquid mixed refrigerant is vaporized and sucked into the first compressor 11a through the suction pipe 10b. Then, the liquid refrigerant passes through the expansion device 16 and is evaporated by exchanging heat with the air inside the refrigerator in the evaporator 14.
is sucked into the compressor 22. Note that the case 13 operates in the same manner as the case 12 described above.
上記実施例ではシヨーケース１２，１３を冷凍
食品用としたが、例えば一方のシヨーケースとす
ることもできる。 In the above embodiment, the cases 12 and 13 are used for frozen foods, but they can also be used as one of the cases, for example.
以上説明したようにこの発明によれば、１台の
コンデンシングユニツトで庫内温度の異なる複数
台のシヨーケースを冷却できるようにしたので、
コンデンシングユニツトの設置スペースが狭くて
すみ、かつ冷媒配管工事も簡単になる。また、高
価なR502の冷媒のための長尺配管が不要である
ので、冷却運転経費も安価になり、しかも吸入配
管の圧力損失も小さくなり冷却効率が向上する等
の効果がある。
As explained above, according to the present invention, one condensing unit can cool multiple cases with different internal temperatures.
The installation space for the condensing unit is small, and refrigerant piping work is also simplified. Furthermore, since there is no need for long piping for the expensive R502 refrigerant, cooling operation costs are reduced, and pressure loss in the suction piping is also reduced, resulting in improved cooling efficiency.
第１図はこの発明の一実施例によるシヨーケー
ス冷却システムの配管図、第２図は従来の冷却シ
ステムの配管図である。
１，２，３：生鮮用シヨーケース、１２，１
３：冷凍食品用シヨーケース、４，５，６，１
４，１５：蒸発器、１１：コンデンシングユニツ
ト、１１ａ：第１の圧縮機、１１ｂ：凝縮器、２
０，２１：冷媒熱交換器、２２，２３：第２の圧
縮機、７，８，９，１６，１７：絞り装置、な
お、図中同一符号は同一又は相当部分を示す。
FIG. 1 is a piping diagram of a case cooling system according to an embodiment of the present invention, and FIG. 2 is a piping diagram of a conventional cooling system. 1, 2, 3: Perishable case, 12, 1
3: Frozen food case, 4, 5, 6, 1
4, 15: Evaporator, 11: Condensing unit, 11a: First compressor, 11b: Condenser, 2
0, 21: Refrigerant heat exchanger, 22, 23: Second compressor, 7, 8, 9, 16, 17: Throttle device. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
グユニツトと、内部に蒸発器を収容した第１のシ
ヨーケースと、内部に第２の圧縮機、冷媒熱交換
器、絞り装置および蒸発器からなる冷凍サイクル
を収納した第２のシヨーケースとを備え、上記第
１のシヨーケースの蒸発器と第２のシヨーケース
の冷媒熱交換器とを上記コンデンシングユニツト
の冷媒配管にそれぞれ絞り装置を介して並列に接
続したことを特徴とするシヨーケース冷却システ
ム。1 A refrigeration unit consisting of a condensing unit consisting of a first compressor and a condenser, a first case housing an evaporator therein, and a second compressor, a refrigerant heat exchanger, a throttling device, and an evaporator inside. A second show case housing a cycle is provided, and an evaporator in the first show case and a refrigerant heat exchanger in the second show case are connected in parallel to the refrigerant pipes of the condensing unit through respective throttling devices. The case cooling system is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27556285A JPS62134472A (en) | 1985-12-06 | 1985-12-06 | Showcase cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27556285A JPS62134472A (en) | 1985-12-06 | 1985-12-06 | Showcase cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62134472A JPS62134472A (en) | 1987-06-17 |
| JPH0470543B2 true JPH0470543B2 (en) | 1992-11-11 |
Family
ID=17557175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27556285A Granted JPS62134472A (en) | 1985-12-06 | 1985-12-06 | Showcase cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62134472A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006136439A (en) * | 2004-11-11 | 2006-06-01 | Hario Glass Kk | Drink server |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719560A (en) * | 1980-07-10 | 1982-02-01 | Tokyo Shibaura Electric Co | Method of and apparatus for controlling refrigerating plant with booster unit |
| JPS57150770A (en) * | 1981-03-11 | 1982-09-17 | Mitsubishi Electric Corp | Temperature control for freezer/refrigerator |
-
1985
- 1985-12-06 JP JP27556285A patent/JPS62134472A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719560A (en) * | 1980-07-10 | 1982-02-01 | Tokyo Shibaura Electric Co | Method of and apparatus for controlling refrigerating plant with booster unit |
| JPS57150770A (en) * | 1981-03-11 | 1982-09-17 | Mitsubishi Electric Corp | Temperature control for freezer/refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62134472A (en) | 1987-06-17 |
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