JPS6225952B2 - - Google Patents
Info
- Publication number
- JPS6225952B2 JPS6225952B2 JP6316180A JP6316180A JPS6225952B2 JP S6225952 B2 JPS6225952 B2 JP S6225952B2 JP 6316180 A JP6316180 A JP 6316180A JP 6316180 A JP6316180 A JP 6316180A JP S6225952 B2 JPS6225952 B2 JP S6225952B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- refrigerant liquid
- cooler
- case
- cooling coil
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 43
- 239000003507 refrigerant Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 31
- 239000000112 cooling gas Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010257 thawing Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Defrosting Systems (AREA)
Description
【発明の詳細な説明】
この発明はケースの前面に形成した商品出し入
れ用の開成部に冷却空気によるエアカーテンを形
成するようにした冷蔵シヨーケースにおいて、冷
却と除霜を同時に行えるようにしたその装置に関
する。[Detailed Description of the Invention] This invention relates to a device for cooling and defrosting a refrigerated case in which an air curtain of cooling air is formed in an opening for loading and unloading products formed on the front surface of the case. Regarding.
精肉や鮮魚等の商品を陳列販売するためには冷
却器を備えた冷蔵シヨーケースが用いられてい
る。このような冷蔵シヨーケースにおいては、商
品を自由に出し入れできるようにするために、ケ
ースの前部に開成部を設け、更に冷却効果を上げ
るために、ケース内に形成された冷却空気用の風
路と連通させて前記開成部の上部に吹出口を、下
部に吸込口をそれぞれ形成し、吹出口から吹き出
されて吸込口に向かう冷却空気によつて開成部に
エアカーテンを形成するようにしている。 Refrigerated cases equipped with coolers are used to display and sell products such as meat and fresh fish. In such refrigerated cases, an opening is provided at the front of the case to allow products to be taken in and taken out freely, and an air passage for cooling air is formed inside the case to further improve the cooling effect. An air outlet is formed in the upper part of the opening and a suction inlet is formed in the lower part of the opening in communication with the opening, and an air curtain is formed in the opening by the cooling air blown out from the air outlet and directed toward the suction opening. .
しかしながら、このようなシヨーケースにおい
ては、冷却器に付着した霜を取り除く時には冷却
を一時中断しているため、ケース内の温度が上昇
するという問題点があつた。 However, in such a case, there is a problem in that the temperature inside the case increases because cooling is temporarily interrupted when removing frost attached to the cooler.
本発明は上述のような従来技術の問題点に鑑
み、ケース内に形成された冷却空気用の風路に複
数の冷却器を設け、これら冷却器のうち一部は冷
却は行ない、残りのものは除霜を行なうようにす
ることにより、除霜のために冷却を一時中断する
ことなく、しかもケース内の温度を常に所定に保
持せしめて、冷却、除霜を同時に行なえるように
した冷蔵シヨーケースに関し、以下実施例図に基
いて、本発明を詳述する。 In view of the problems of the prior art as described above, the present invention provides a plurality of coolers in the cooling air air passage formed in the case, some of these coolers perform cooling, and the remaining A refrigerated case that allows cooling and defrosting to be performed at the same time by defrosting, without temporarily interrupting cooling for defrosting, and by constantly maintaining the temperature inside the case at a specified level. With regard to this, the present invention will be described in detail below based on embodiment figures.
第１図及び第２図において、１はシヨーケース
を構成する外側ケースであり、前部に商品出し入
れのための開成部２が設けられている。外側ケー
ス１内にはその内面に沿つて内側ケース３が設け
られ、内外ケース１，３間には通風用の外側循環
風路４を形成してある。さらに、内側ケース３の
内側には商品収納用ケース５が配設されており、
内側ケース３とケース５との間には冷気のための
内側循環風路６を形成してある。 In FIGS. 1 and 2, reference numeral 1 denotes an outer case constituting a show case, and an opening part 2 for taking in and out products is provided at the front part. An inner case 3 is provided inside the outer case 1 along its inner surface, and an outer circulation air passage 4 for ventilation is formed between the inner and outer cases 1 and 3. Furthermore, a product storage case 5 is arranged inside the inner case 3,
An inner circulation air passage 6 for cold air is formed between the inner case 3 and the case 5.
内側循環風路６には送風機８が設けられてお
り、開成部２の下部に形成された吸込口９から送
風機８により吸引された空気は、内側循環風路６
を通つて、開成部２の上部に形成された吹出口１
０から吹き出され、開成部２にエアカーテンを形
成する。 A blower 8 is provided in the inner circulation air passage 6, and the air sucked by the air blower 8 from the suction port 9 formed at the lower part of the opening part 2 is sent to the inner circulation air passage 6.
through the air outlet 1 formed at the top of the opening 2
The air is blown out from 0 to form an air curtain in the opening 2.
外側循環風路４にも同様に送風機１１が設けら
れており、開成部２の下部に形成された吸込口１
２から送風機１１により吸引された空気は、外側
循環風路４を通つて、開成部２の上部外側吹出口
１３から吹き出され、開成部２にエアカーテンを
形成する。 A blower 11 is similarly provided in the outer circulation air passage 4, and a suction port 1 formed at the lower part of the open part 2
The air sucked in by the blower 11 from the opening 2 passes through the outer circulation air passage 4 and is blown out from the upper outer outlet 13 of the opening 2 to form an air curtain in the opening 2.
内側循環風路６の中には、複数個（例えば図示
のような３基）の冷却器１４ａ，１４ｂ，１４ｃ
が設けられている。夫々の冷却器１４ａ，１４
ｂ，１４ｃには夫々第２図に示すように冷却コイ
ル１５ａ，１５ｂ，１５ｃが組み付けられてい
る。これらの冷却器に対して共通に、冷媒液母管
１６から分岐した第１の冷媒液管１７と第２の冷
媒液管１８、及び吸入管１９が設けられており、
第１の冷媒液管１７の入口側には開閉弁２０が設
けられている。また、各冷却器の冷却コイル１５
ａ，１５ｂ，１５ｃの一端と第１の冷媒液管１７
との間は、夫々逆止弁２１ａ，２１ｂ，２１ｃと
膨張弁２２ａ，２２ｂ，２２ｃとを並設した流路
２３ａ，２３ｂ，２３ｃにより接続されている。
また、各冷却コイル１５ａ，１５ｂ，１５ｃの他
端と第２の冷媒液管１８及び吸入管１９との間に
は、冷媒液の冷却コイルへの供給、又は冷却コイ
ルからの冷媒ガスの吸入管への排出を行わせる流
路を形成させる流路切換弁２４ａ，２４ｂ，２４
ｃを設ける。図示例ではこの流路切換弁が三方弁
であるものについて示している。 Inside the inner circulation air passage 6, there are a plurality of (for example, three as shown in the figure) coolers 14a, 14b, 14c.
is provided. Each cooler 14a, 14
As shown in FIG. 2, cooling coils 15a, 15b, and 15c are respectively assembled to b and 14c. Commonly provided to these coolers are a first refrigerant liquid pipe 17 and a second refrigerant liquid pipe 18 branched from the refrigerant liquid main pipe 16, and a suction pipe 19.
An on-off valve 20 is provided on the inlet side of the first refrigerant liquid pipe 17. In addition, the cooling coil 15 of each cooler
One end of a, 15b, 15c and the first refrigerant liquid pipe 17
are connected by flow paths 23a, 23b, 23c in which check valves 21a, 21b, 21c and expansion valves 22a, 22b, 22c are arranged in parallel.
Moreover, between the other end of each cooling coil 15a, 15b, 15c and the second refrigerant liquid pipe 18 and suction pipe 19, a suction pipe for supplying refrigerant liquid to the cooling coil or for refrigerant gas from the cooling coil is provided. Flow path switching valves 24a, 24b, 24 that form a flow path for discharging to
Provide c. In the illustrated example, the flow path switching valve is a three-way valve.
次に第２図に示す三基の冷却器１４ａ，１４
ｂ，１４ｃを設けた場合の冷却器の運転について
説明する。除霜を行わない場合は、開閉弁２０を
開き、かつ流路切換弁２４ａ，２４ｂ，２４ｃは
全て、冷却コイル１５ａ，１５ｂ，１５ｃの前記
他端が吸入管１９に連通し、第２の冷媒液管１８
には連通しない位置としておく。この状態におけ
る冷媒の流れは実線矢印で示すようになる。即
ち、冷凍機（図示せず）からの冷媒液は、第１の
冷媒液管１６、膨張弁２２ａ，２２ｂ，２２ｃを
通り、ここで低温冷媒ガスとなつて各冷却コイル
１５ａ，１５ｂ，１５ｃ内を通過する間に空気を
冷却し、流路切換弁２４ａ，２４ｂ，２４ｃ及び
吸入管１９を通して冷凍機に戻る。 Next, three coolers 14a, 14 shown in FIG.
The operation of the cooler when parts b and 14c are provided will be explained. When defrosting is not performed, the on-off valve 20 is opened, and the flow path switching valves 24a, 24b, 24c are all connected so that the other ends of the cooling coils 15a, 15b, 15c are connected to the suction pipe 19, and the second refrigerant is Liquid pipe 18
Keep it in a position where it does not communicate with the The flow of the refrigerant in this state is shown by solid arrows. That is, the refrigerant liquid from the refrigerator (not shown) passes through the first refrigerant liquid pipe 16 and the expansion valves 22a, 22b, and 22c, where it becomes low-temperature refrigerant gas and enters each cooling coil 15a, 15b, and 15c. The air is cooled while passing through, and returns to the refrigerator through the flow path switching valves 24a, 24b, 24c and the suction pipe 19.
一方、冷却器の１つ、例えば冷却器１４ａの除
霜を行う場合は、開閉弁２０を閉じ、冷却器１４
ａに対応した流路切換弁２４ａのみを切換えて冷
却コイル１５ａに対して第２の冷媒液管１８を連
通させる。これにより、冷媒の流れは点線矢印で
示すようなものとなる。即ち、冷媒液母管１６か
らの冷媒液は第２の冷媒液管１８を通り、流路切
換弁２４ａを通つて冷却器１４ａの冷却コイル１
５ａ内を冷却時と逆方向に流れ、この冷却器の除
霜を行う。そしてこの冷却コイル１５ａを出た冷
媒液は、逆止弁２１ａ、第１の冷媒液管１７を通
り、流路２３ｂ，２３ｃの膨張弁２２ｂ，２２ｃ
で気化され、冷却コイル１５ｂ，１５ｃを通り、
流路切換弁２４ｂ，２４ｃを通つて吸入管１９に
導びかれ、冷凍機に戻る。なお、各々の冷却器１
４ａ，１４ｂ，１４ｃの間には、第１図に示すよ
うに断熱材２５を介装して冷却器相互間の断熱を
図る。 On the other hand, when defrosting one of the coolers, for example, the cooler 14a, the on-off valve 20 is closed and the cooler 14a is defrosted.
Only the flow path switching valve 24a corresponding to point a is switched to communicate the second refrigerant liquid pipe 18 with the cooling coil 15a. As a result, the flow of the refrigerant becomes as shown by the dotted arrow. That is, the refrigerant liquid from the refrigerant liquid main pipe 16 passes through the second refrigerant liquid pipe 18, passes through the flow path switching valve 24a, and is transferred to the cooling coil 1 of the cooler 14a.
5a in the opposite direction to that during cooling, and defrosts the cooler. The refrigerant liquid that has exited the cooling coil 15a passes through the check valve 21a, the first refrigerant liquid pipe 17, and the expansion valves 22b and 22c in the flow paths 23b and 23c.
is vaporized, passes through cooling coils 15b and 15c,
It is led to the suction pipe 19 through the flow path switching valves 24b and 24c, and returns to the refrigerator. In addition, each cooler 1
As shown in FIG. 1, a heat insulating material 25 is interposed between the coolers 4a, 14b, and 14c to provide heat insulation between the coolers.
図示実施例では、内側循環風路６内に３基の冷
却器を設けた場合について示すが、２基でもある
いは４基以上でも可能であり、また冷却器は図示
のように前後方向に配設しても左右方向に配設し
てもよい。さらに、冷却器は上下方向へ段違いに
配設するばあいもある。 The illustrated embodiment shows a case in which three coolers are provided in the inner circulation air passage 6, but it is also possible to have two or four or more coolers, and the coolers are arranged in the front and rear directions as shown in the figure. They may also be arranged in the left and right direction. Furthermore, the coolers may be arranged in different levels in the vertical direction.
以上述べたように、本発明の冷蔵シヨーケース
は、それぞれ冷却コイルが組み付けられた複数の
冷却器を冷却空気用の風路に取付け、各冷却器に
共通の第１、第２の冷媒液管及び吸入管を設け、
第１の冷媒液管及び吸入管を設け、第１の冷媒液
管の入口側には開閉弁を設けると共に該第１の冷
媒液管と各冷却器の冷却コイルの一端との間を
夫々膨張弁と逆止弁を並設した流路により接続
し、冷却器の冷却コイルの他端と前記第２の冷媒
液管及び吸入管との間に、冷媒液の冷却コイルへ
の供給又は冷却コイルからの冷却ガスの吸入管へ
の排出を行わせる流路を選択的に形成させる流路
切換弁を設けたので、ある冷却器の除霜中に他の
冷却器によりケース内の冷却を行うことができ、
ケース内温度を常時所定の温度に保持し、しかも
除霜のために冷却を一時中断する必要がない。ま
た本発明においては、冷媒液の全流量を除霜対象
の冷却器の冷却コイルに流すことが可能であるか
ら、除霜を短時間（例えば８分程度）で行うこと
ができるという効果がある。 As described above, in the refrigerated case of the present invention, a plurality of coolers each having a cooling coil assembled therein are installed in a cooling air air path, and the first and second refrigerant liquid pipes and Provide a suction tube,
A first refrigerant liquid pipe and a suction pipe are provided, and an on-off valve is provided on the inlet side of the first refrigerant liquid pipe, and the air is expanded between the first refrigerant liquid pipe and one end of the cooling coil of each cooler. A valve and a check valve are connected by a flow path arranged in parallel, and a cooling coil is connected between the other end of the cooling coil of the cooler and the second refrigerant liquid pipe and the suction pipe for supplying refrigerant liquid to the cooling coil or cooling coil. A flow path switching valve is installed to selectively form a flow path for discharging cooling gas from the cooling gas into the suction pipe, so that while one cooler is defrosting, the inside of the case can be cooled by another cooler. is possible,
The temperature inside the case is always maintained at a predetermined temperature, and there is no need to temporarily interrupt cooling for defrosting. Furthermore, in the present invention, since it is possible to flow the entire flow rate of the refrigerant liquid to the cooling coil of the cooler to be defrosted, there is an effect that defrosting can be performed in a short time (for example, about 8 minutes). .
さらに、除霜中の冷却器を流れる液冷媒は過冷
却されて冷却中の冷却器に供給されるので、冷凍
効果が向上し、省エネルギー化を期せる利点があ
る。 Furthermore, since the liquid refrigerant flowing through the cooler during defrosting is supercooled and supplied to the cooler during cooling, there is an advantage that the refrigeration effect is improved and energy savings can be expected.
第１図は本発明の冷蔵シヨーケースの一例を示
す縦断面図、第２図は本発明の冷却器の一例を示
す回路図である。
１……外側ケース、２……開成部、３……内側
ケース、４……外側循環風路、６……内側循環風
路、８，１１……送風機、９，１２……吸込口、
１０，１３……吹出口、１４ａ〜１４ｃ……冷却
器、１５ａ〜１５ｃ……冷却コイル、１７……第
１の冷媒液管、１８……第２の冷媒液管、１９…
…吸入管、２０……開閉弁、２１ａ〜２１ｃ……
逆止弁、２２ａ〜２２ｃ……膨張弁、２４ａ〜２
４ｃ……流路切換弁。
FIG. 1 is a longitudinal sectional view showing an example of a refrigerating case of the present invention, and FIG. 2 is a circuit diagram showing an example of a cooler of the present invention. 1... Outer case, 2... Opening part, 3... Inner case, 4... Outer circulation air path, 6... Inner circulation air path, 8, 11... Air blower, 9, 12... Suction port,
10, 13...Air outlet, 14a-14c...Cooler, 15a-15c...Cooling coil, 17...First refrigerant liquid pipe, 18...Second refrigerant liquid pipe, 19...
...Suction pipe, 20...Opening/closing valve, 21a to 21c...
Check valve, 22a-22c...Expansion valve, 24a-2
4c...Flow path switching valve.
Claims (1)
けられ、前記ケース内に形成された冷却空気用の
風路と連通させて前記開成部の上部に吹出口を、
下部に吸込口をそれぞれ形成し、前記吹出口から
吹き出され前記吸込口に向かう冷却空気によつて
前記開成部にエアカーテンを形成するようにした
シヨーケースにおいて、それぞれ冷却コイルが組
み付けられた複数の冷却器を前記冷却空気用の風
路に取付け、各冷却器に共通の第１、第２の冷媒
液管及び吸入管を設け、第１の冷媒液管の入口側
には開閉弁を設けると共に、該第１の冷媒液管と
各冷却器の冷却コイルの一端との間を夫々膨張弁
と逆止弁を並設した流路により接続し、冷却器の
冷却コイルの他端と前記第２の冷媒液管及び吸入
管との間に、冷媒液の冷却コイルへの供給又は冷
却コイルからの冷却ガスの吸入管への排出を行わ
せる流路を選択的に形成させる流路切換弁を設け
たことを特徴とする冷蔵シヨーケース。1. An opening for loading and unloading products is provided at the front of the case, and an air outlet is provided at the top of the opening, communicating with a cooling air passage formed within the case.
In the case, each of which has a suction port formed at its lower part, and in which an air curtain is formed in the opening part by the cooling air blown out from the blow-off port and directed toward the suction port, a plurality of cooling coils each having a cooling coil assembled therein are provided. A cooler is installed in the air passage for cooling air, first and second refrigerant liquid pipes and suction pipes are provided common to each cooler, and an on-off valve is provided on the inlet side of the first refrigerant liquid pipe, and The first refrigerant liquid pipe and one end of the cooling coil of each cooler are connected by a flow path in which an expansion valve and a check valve are arranged in parallel, and the other end of the cooling coil of the cooler is connected to the second end of the cooling coil of the cooler. A flow path switching valve is provided between the refrigerant liquid pipe and the suction pipe to selectively form a flow path for supplying refrigerant liquid to the cooling coil or discharging cooling gas from the cooling coil to the suction pipe. A refrigerated case characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6316180A JPS56160573A (en) | 1980-05-13 | 1980-05-13 | Refrigerated display case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6316180A JPS56160573A (en) | 1980-05-13 | 1980-05-13 | Refrigerated display case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56160573A JPS56160573A (en) | 1981-12-10 |
| JPS6225952B2 true JPS6225952B2 (en) | 1987-06-05 |
Family
ID=13221231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6316180A Granted JPS56160573A (en) | 1980-05-13 | 1980-05-13 | Refrigerated display case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56160573A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0160177U (en) * | 1987-10-13 | 1989-04-17 | ||
| JPH0160176U (en) * | 1987-10-13 | 1989-04-17 |
-
1980
- 1980-05-13 JP JP6316180A patent/JPS56160573A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56160573A (en) | 1981-12-10 |
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