JPH0828978A - Cooling device for binary freezer system - Google Patents

Cooling device for binary freezer system

Info

Publication number
JPH0828978A
JPH0828978A JP16399494A JP16399494A JPH0828978A JP H0828978 A JPH0828978 A JP H0828978A JP 16399494 A JP16399494 A JP 16399494A JP 16399494 A JP16399494 A JP 16399494A JP H0828978 A JPH0828978 A JP H0828978A
Authority
JP
Japan
Prior art keywords
freezer
condenser
primary side
compartment
compressor
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
Application number
JP16399494A
Other languages
Japanese (ja)
Inventor
Akitoshi Ueno
明敏 上野
Takemune Mesaki
丈統 目崎
Yuuji Fujimoto
遊二 藤本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP16399494A priority Critical patent/JPH0828978A/en
Publication of JPH0828978A publication Critical patent/JPH0828978A/en
Pending legal-status Critical Current

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  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

PURPOSE:To enable a space above a top wall part of a freezer to be reduced, a space within the freezer to be effectively utilized, an effective utilization to be attained against a sealing characteristic and further a discharging of drain generated at a cascade condenser to be effectively carried out. CONSTITUTION:A cooling device 20 arranged to be separate from an outdoor device 3 comprising a primary side compressor 1 and a primary side condenser 2 is installed at an upper part within a freezer 13, a secondary compressor 4 and the cascade condenser 5 in the cooling device 20 are internally installed within a divided chamber 31 defined by a dividing wall 30 having a thermal insulating structure and then the divided chamber 31 is released to a surrounding atmosphere through an opening arranged in the freezer 13.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、熱源側となる室外機
と、カスケ−ドコンデンサを備えた冷却ユニットとから
成る二元冷凍システムの冷却装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a binary refrigeration system comprising an outdoor unit on the heat source side and a cooling unit equipped with a cascade condenser.

【0002】[0002]

【従来の技術】従来、カスケ−ドコンデンサ−を用いた
二元冷凍システムの冷凍装置は、たとえば、特開平5−
5567号公報に示されているように知られている。
2. Description of the Related Art Conventionally, a refrigerating device of a binary refrigerating system using a cascade condenser is disclosed in, for example, Japanese Unexamined Patent Publication No. Hei 5 (1999) -5/1993.
It is known as shown in Japanese Patent No. 5567.

【0003】この公報記載の冷凍装置は、図4に示した
ように、熱源側となる室外機Aと、カスケ−ドコンデン
サ−Cを備えた冷却ユニットUとを分離したもので、前
記室外機Aには、1次側圧縮機Dと、1次側凝縮器Eと
を備え、また、冷却ユニットUには、2次側圧縮機F
と、前記カスケ−ドコンデンサ−Cとを備える他、蒸発
器Gも備え、これら各機器を一つのケ−シングHに内装
して、ファクトリ−・アッセンブルド化し、そして、現
地においては、前記冷気ユニットUを建家内に設ける冷
凍庫Rの頂壁部tに配置して、前記2次側圧縮機Fと、
カスケ−ドコンデンサ−Cとを前記冷凍庫の庫外側に位
置するように取付け、そして、前記カスケ−ドコンデン
サ−Cの1次側流路aを、室外に取り付ける前記室外機
Aの1次側凝縮器E及び1次側圧縮機Dに、連絡管M、
Nで接続したものである。
As shown in FIG. 4, the refrigerating apparatus described in this publication separates an outdoor unit A on the heat source side and a cooling unit U equipped with a cascade condenser C from the outdoor unit. A includes a primary compressor D and a primary condenser E, and the cooling unit U includes a secondary compressor F.
In addition to the cascading condenser C, an evaporator G is also provided, and each of these devices is installed in one casing H to be a factory assembly, and the cold air is locally provided. The unit U is arranged on the top wall portion t of the freezer R provided in the building, and the secondary compressor F and
The cascade condenser C is attached so as to be located outside the freezer, and the primary passage a of the cascade condenser C is attached outside the primary condenser of the outdoor unit A. Connecting pipe M to the compressor E and the primary compressor D,
It is connected by N.

【0004】尚、図4において、Kは、前記カスケ−ド
コンデンサ−Cに付設するバックアップ用補助ファン、
Pは、前記カスケ−ドコンデンサ−Cと、蒸発器Gとの
間に介装する膨張弁、Qは、前記蒸発器Gに付設する蒸
発器ファンである。
In FIG. 4, K is a backup auxiliary fan attached to the cascade condenser C,
P is an expansion valve interposed between the cascade condenser C and the evaporator G, and Q is an evaporator fan attached to the evaporator G.

【0005】[0005]

【発明が解決しようとする課題】以上のように構成する
冷却装置によると、前記冷却ユニットUが、ファクトリ
−・アッセンブル化されているから、現地での据付け施
工は、前記冷凍庫Rの頂壁部tに配置し、前記連絡管
M、Nを接続するだけで取り付けられ、現地工事を簡素
化できるのであるが、前記冷却ユニットUは、前記冷凍
庫Rの頂壁部t大きな貫通穴を設けて、貫通状に取り付
けており、このため、前記貫通穴と前記ケ−シングHと
の間の隙間をシ−ルする必要があり、しかも、この隙間
のシ−ル長さは、前記ケ−シングHの外周長さとなって
その長さが長くなり、シ−ル構造によってはシ−ル性に
問題が生ずる難点があった。
According to the cooling device configured as described above, since the cooling unit U is factory-assembled, the top wall portion of the freezer R can be installed locally. The cooling unit U can be installed by simply connecting the connecting pipes M and N to each other and simplifying the on-site work. However, the cooling unit U is provided with a large through hole in the top wall portion t of the freezer R. Since it is attached in a penetrating manner, it is necessary to seal the gap between the through hole and the casing H, and the seal length of this gap is the casing H. However, depending on the seal structure, there is a problem in that there is a problem with the sealability.

【0006】また、前記頂壁部tに前記冷却ユニットU
に取り付けるのであるから、前記頂壁部t上方のスペ−
スもそれだけ余分に必要となり、冷凍庫R内の冷却空間
が、建家の天井高さに対して小さくなり、前記建家の空
間を有効に利用出来ない不具合もあった。
Further, the cooling unit U is provided on the top wall portion t.
Since it is attached to the space above the top wall portion t.
This also requires extra space, the cooling space in the freezer R becomes smaller than the ceiling height of the building, and there is a problem that the space of the building cannot be effectively used.

【0007】本発明の目的は、冷凍庫の頂壁部上方のス
ペ−スを小さく出来て、冷凍庫内の空間を有効に利用で
き、また、シ−ル性に対しても有利に出来、更に、カス
ケ−ドコンデンサに生ずるドレンの排出を良効に行える
冷却装置を堤供することにある。
The object of the present invention is to reduce the space above the top wall of the freezer so that the space inside the freezer can be used effectively, and it is also advantageous in terms of sealability. The purpose is to provide a cooling device that can effectively discharge the drain generated in the cascade condenser.

【0008】[0008]

【課題を解決するための手段】請求項1記載の発明は、
1次側圧縮機機1と、1次側凝縮器2とをもつ室外機3
と、2次側圧縮機4とカスケードコンデンサ5及び蒸発
器6とをもつ冷却ユニット20とを備え、前記カスケー
ドコンデンサ5の1次側流路5aを前記室外機3の1次
側凝縮器2及び1次側圧縮機機1に連絡配管7,8で接
続した二元冷凍システムの冷却装置において、前記冷却
ユニット20を冷凍庫13の庫内上部に配設して、前記
冷却ユニット20の2次側圧縮機4とカスケードコンデ
ンサ5とを断熱構造の区画壁30で庫内と区画した区画
室31に内装し、この区画室31を、前記冷凍庫13の
庫壁13aに設ける開口部13bを介して庫外に開放し
たのである。
According to the first aspect of the present invention,
An outdoor unit 3 having a primary side compressor 1 and a primary side condenser 2
And a cooling unit 20 having a secondary compressor 4, a cascade condenser 5 and an evaporator 6, and the primary passage 5a of the cascade condenser 5 is connected to the primary condenser 2 of the outdoor unit 3 and In the cooling device of the dual refrigeration system connected to the primary side compressor 1 by the connecting pipes 7 and 8, the cooling unit 20 is arranged in the upper part of the freezer 13, and the secondary side of the cooling unit 20 is arranged. The compressor 4 and the cascade condenser 5 are installed in a compartment 31 that is separated from the interior by a compartment wall 30 having a heat insulating structure, and the compartment 31 is stored through an opening 13b provided in a compartment wall 13a of the freezer 13. It was opened to the outside.

【0009】また、請求項2記載の発明は、前記区画室
31における区画壁30の底壁に、庫外に開放するドレ
ン配管32を開口させたのである、
According to the second aspect of the present invention, a drain pipe 32 that opens to the outside of the refrigerator is opened in the bottom wall of the partition wall 30 in the partition chamber 31.

【0010】[0010]

【作用】請求項1記載の発明では、前記冷却ユニット2
0を、冷凍庫の庫内上部に配設して、前記2次側圧縮機
4とカスケ−ドコンデンサ5とを、前記区画室30に内
装し、この区画室30を、前記冷凍庫13の開口部13
bを介して庫外に開放したから、前記冷凍庫13の頂壁
部上方のスペ−スを小さく出来て、前記冷凍庫13の冷
却空間を有効に利用でき、また、シ−ル性に対しても有
利に出来、それでいて、前記カスケ−ドコンデンサ5に
ドレンが生じても、このドレンは、前記開口部13aを
介して自然蒸発させられ、その排出を良好に行えるし、
また、前記区画室31の温度低下も行えるのである。
In the invention according to claim 1, the cooling unit 2 is provided.
0 is disposed in the upper part of the freezer, and the secondary side compressor 4 and the cascade condenser 5 are installed in the compartment 30. The compartment 30 is provided with an opening of the freezer 13. Thirteen
Since it is opened to the outside via b, the space above the top wall of the freezer 13 can be made small, the cooling space of the freezer 13 can be effectively used, and the sealing property is also improved. This is advantageous, and even if drain occurs in the cascade condenser 5, the drain is naturally evaporated through the opening 13a, and the drain can be performed well,
Further, the temperature of the compartment 31 can be lowered.

【0011】また、請求項2記載の発明では、前記区画
室31における区画壁30の底壁に、ドレン配管32を
開口させたから、このドレン配管32を介してドレンを
排出出来るし、また、前記区画室31に自然対流で庫外
の外気を取り入れることが出来、この外気の取り入れに
よりドレンの排出を一層良好に行えるし、また、前記区
画室31の温度低下をより一層良好に行えるのである。
According to the second aspect of the invention, since the drain pipe 32 is opened in the bottom wall of the partition wall 30 in the compartment 31, the drain can be discharged through the drain pipe 32. The outside air outside the storage can be taken into the compartment 31 by natural convection, the drain can be discharged more favorably by the intake of the outside air, and the temperature of the compartment 31 can be further lowered.

【0012】[0012]

【実施例】本発明冷却装置の基本構成は、高温側となる
1次側圧縮機1と、1次側凝縮器2とをもつ室外機3
と、低温側となる2次側圧縮機4とカスケ−ドコンデン
サ5及び蒸発器6とをもつ冷却ユニット20とから成
り、前記カスケ−ドコンデンサ5の1次側流路5aを、
前記室外機3の1次側凝縮器2及び1次側圧縮機1に連
絡管7、8で接続した二元冷凍システムの冷却装置を基
礎とし、前記冷却ユニット20を前記冷凍庫13の庫内
上部に配設して、前記冷却ユニット20の2次側圧縮機
4とカスケ−ドコンデンサ5とを断熱構造の区画壁30
で庫内と区画した区画室31に内装し、この区画室31
を、前記冷凍庫13の庫壁13aを介して庫外に開放し
てたものである、しかして、図1に示した第1実施例
は、前記2次側圧縮機4とカスケ−ドコンデンサ5と
を、断熱構造の前記区画壁30で形成した上面開放のケ
−シング40に内装して、このケ−シング40の側方
に、前記蒸発器6とこの蒸発器6に付設するフアン15
とを、前記ケ−シング40を支持するフレ−ム41に取
付けると共に、前記冷凍庫13の頂壁部における庫壁1
3aには、前記ケーシング40の上面に対応する開口部
13bを設けて、この開口部13bを介して前記区画室
31を、庫外に開放したものである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The cooling device of the present invention has a basic structure of an outdoor unit 3 having a primary side compressor 1 on the high temperature side and a primary side condenser 2.
And a cooling unit 20 having a secondary side compressor 4 on the low temperature side, a cascade condenser 5 and an evaporator 6, and the primary side flow path 5a of the cascade condenser 5 is
Based on the cooling device of the dual refrigeration system connected to the primary side condenser 2 and the primary side compressor 1 of the outdoor unit 3 by the connecting pipes 7 and 8, the cooling unit 20 is an upper part of the inside of the freezer 13. And the secondary side compressor 4 and the cascade condenser 5 of the cooling unit 20 are installed in the partition wall 30 having a heat insulating structure.
The interior of the compartment 31 that is partitioned from the interior of
Is opened to the outside of the refrigerator via the storage wall 13a of the freezer 13. Therefore, in the first embodiment shown in FIG. 1, the secondary compressor 4 and the cascade condenser 5 are provided. Are installed in a casing 40 having an open upper surface formed by the partition wall 30 of a heat insulating structure, and the evaporator 6 and a fan 15 attached to the evaporator 6 are provided on the side of the casing 40.
Are attached to a frame 41 supporting the casing 40, and the storage wall 1 at the top wall of the freezer 13 is attached.
3a is provided with an opening 13b corresponding to the upper surface of the casing 40, and the compartment 31 is opened to the outside through the opening 13b.

【0013】前記フレ−ム41は、前記冷凍庫13を設
置する建家の天井梁に結合する吊りステ−に吊設するの
であって、このフレ−ム41に支持する前記蒸発器6及
びフアン15と、前記ケ−シング40の重量とを前記ス
テ−を介して支持すると共に前記ケ−シング40の開放
側における区画壁30と、前記冷凍庫13の庫壁13a
との間にシ−ル材等を介装し、前記区画室30と前記冷
凍庫13の冷却空間とを断熱状に区画するのである。
The frame 41 is hung on a suspension station connected to the ceiling beam of the building in which the freezer 13 is installed, and the evaporator 6 and the fan 15 supported by the frame 41 are suspended. And the weight of the casing 40 via the station and the partition wall 30 on the open side of the casing 40 and the storage wall 13a of the freezer 13.
A seal material or the like is interposed between the partition chamber 30 and the cooling space of the freezer 13 so as to be insulated.

【0014】そして、前記蒸発器6の入り口側と、前記
カスケ−ドコンデンサ5の2次側流路5bの出口側とを
2次側膨張機構14をもった液管11を介して接続する
と共に、前記蒸発器6の出口側と前記2次側圧縮機4の
吸込側とを、ガス管12を介して接続したものである
る。
The inlet side of the evaporator 6 and the outlet side of the secondary side flow path 5b of the cascade condenser 5 are connected via a liquid pipe 11 having a secondary side expansion mechanism 14. The outlet side of the evaporator 6 and the suction side of the secondary side compressor 4 are connected via a gas pipe 12.

【0015】尚、図1において、16は、前記室外機3
の1次側凝縮器2に付設するフアン、17は、前記液側
連絡管7に介そうする1次側膨張機構である。
In FIG. 1, 16 is the outdoor unit 3
The fan 17 attached to the primary condenser 2 of No. 1 is a primary expansion mechanism for interposing the liquid side connecting pipe 7.

【0016】以上の構成において、前記1次側圧縮機1
と1次側凝縮器2、1次側膨張機構17及びカスケ−ド
コンデンサ5の1次側流路5aとにより1次側冷凍サイ
クルが形成され、また、前記2次側圧縮機4とカスケ−
ドコンデンサ5の2次側流路5b、2次側膨張機構14
及び蒸発器6とにより2次側冷凍サイクルが形成される
のであって、前記カスケ−ドコンデンサ5での熱交換に
より、2次側冷凍サイクルにおける廃熱が1次側冷凍サ
イクルに奪取されて前記室外機3の1次側冷凍凝縮器2
から室外に放熱され、前記2次側冷凍サイクルにおける
廃熱奪取により前記カスケ−ドコンデンサ5における2
次側流路5bの凝縮温度が低下し、このため、前記蒸発
器6での蒸発温度を、前記カスケ−ドコンデンサ5にお
ける1次側流路5aでの蒸発温度より低くでき、前記冷
凍庫13の庫内を、図2に示した二元冷凍システムによ
り所望の低温に冷却させられるのである。
In the above construction, the primary side compressor 1
A primary side refrigerating cycle is formed by the primary side condenser 2, the primary side expansion mechanism 17, and the primary side flow path 5a of the cascade condenser 5, and the secondary side compressor 4 and the cascade side.
Secondary side flow path 5b of secondary condenser 5 and secondary side expansion mechanism 14
A secondary side refrigeration cycle is formed by the evaporator 6 and the evaporator 6, and the waste heat in the secondary side refrigeration cycle is taken by the primary side refrigeration cycle due to heat exchange in the cascade condenser 5. Primary side freezing condenser 2 of the outdoor unit 3
Is radiated from the outside to the outside, and the waste heat in the secondary side refrigeration cycle is taken to remove 2 in the cascade condenser 5.
The condensing temperature of the secondary flow path 5b is lowered, so that the evaporating temperature in the evaporator 6 can be made lower than the evaporating temperature in the primary flow path 5a in the cascade condenser 5, and the freezer 13 is cooled. The inside of the refrigerator can be cooled to a desired low temperature by the dual refrigeration system shown in FIG.

【0017】尚、図2において、1次側冷凍サイクルの
凝縮温度は、50℃で、前記カスケ−ドコンデンサ5で
2次側冷凍サイクルとの熱交換により蒸発する1次側流
路5aでの蒸発温度は5℃である。
In FIG. 2, the condensing temperature of the primary side refrigerating cycle is 50 ° C., and the primary side flow path 5a is evaporated by heat exchange with the secondary side refrigerating cycle in the cascade condenser 5. The evaporation temperature is 5 ° C.

【0018】また、前記カスケ−ドコンデンサ5におい
て1次側冷凍サイクルとの熱交換により凝縮する2次側
流路5bでの凝縮温度は、15℃となり、蒸発器6での
蒸発温度を−40℃にできるのである。
Further, the condensation temperature in the secondary side flow path 5b which is condensed by heat exchange with the primary side refrigeration cycle in the cascade condenser 5 is 15 ° C., and the evaporation temperature in the evaporator 6 is -40. It can be done in ° C.

【0019】図1に示した実施例によれば、前記冷却ユ
ニット20を前記冷凍庫13の庫内上部に配設して、前
記2次側圧縮機4とカスケ−ドコンデンサ5とを、前記
区画室30に内装し、この区画室30を、前記冷凍庫1
3の開口部13bを介して庫外に開放したから、前記冷
凍庫13の頂壁部上方のスペ−スを小さく出来て、前記
冷凍庫13の冷却空間を有効に利用でき、また、シ−ル
性に対しても有利に出来、それでいて、前記カスケ−ド
コンデンサ5にドレンが生じても、このドレンは、前記
開口部13aを介して自然蒸発させられ、その排出を良
好に行えし、また、前記区画室31の温度低下も行える
のである。
According to the embodiment shown in FIG. 1, the cooling unit 20 is arranged in the upper part of the freezer 13, and the secondary side compressor 4 and the cascade condenser 5 are separated from each other by the partition. The interior of the compartment 30 is divided into the compartment 30 and the freezer 1.
Since the space above the top wall of the freezer 13 can be reduced, the cooling space of the freezer 13 can be effectively used, and the sealability is improved. However, even if drainage occurs in the cascade condenser 5, the drainage is naturally evaporated through the opening 13a, and the drainage can be favorably performed. The temperature of the compartment 31 can also be lowered.

【0020】次に、図3に示した第2実施例を説明す
る。この実施例は、前記区画室30における区画壁30
の底壁を前記冷凍庫13の側壁に向かって下方に傾斜さ
せ、その傾斜底部に庫外に開放するドレン配管32を開
口させたものである。従って、この実施例によれば、前
記ドレン配管32を介して、前記カスケ−ドコンデンサ
5から生ずるドレンを庫外に排出できると共に前記ドレ
ン配管32を介して自然対流で外気を取り入れられるか
ら、前記区画室30の温度を有効に低下させることが出
来るのである。
Next, the second embodiment shown in FIG. 3 will be described. In this embodiment, the partition wall 30 in the compartment 30 is
The bottom wall is inclined downward toward the side wall of the freezer 13, and a drain pipe 32 that opens to the outside of the refrigerator is opened in the inclined bottom portion. Therefore, according to this embodiment, the drain generated from the cascade condenser 5 can be discharged to the outside of the refrigerator via the drain pipe 32, and the outside air can be taken in by natural convection via the drain pipe 32. The temperature of the compartment 30 can be effectively lowered.

【0021】また、以上の実施例では、前記区画室30
を前記冷凍庫13の頂壁部13aに設ける開口部13b
を介して庫外に開放させたが、前記冷凍庫13の側壁に
前記開口部を設けて、庫外に開放させてもよい。
In the above embodiment, the compartment 30
An opening 13b provided on the top wall 13a of the freezer 13.
Although it is opened to the outside of the refrigerator via the, the opening may be provided on the side wall of the freezer 13 to open it to the outside of the refrigerator.

【0022】[0022]

【発明の効果】請求項1記載の発明では、前記冷却ユニ
ット20を、冷凍庫の庫内上部に配設して、前記2次側
圧縮機4とカスケ−ドコンデンサ5とを、前記区画室3
0に内装し、この区画室30を、前記冷凍庫13の開口
部13bを介して庫外に開放したから、前記冷凍庫13
の頂壁部上方のスペ−スを小さく出来て、前記冷凍庫1
3の冷却空間を有効に利用でき、また、シ−ル性に対し
ても有利に出来、それでいて、前記カスケ−ドコンデン
サ5にドレンが生じても、このドレンは、前記開口部1
3aを介して自然蒸発させられ、その排出を良好に行え
し、また、前記区画室31の温度低下も行えるのであ
る。
According to the first aspect of the present invention, the cooling unit 20 is disposed in the upper part of the freezer, and the secondary side compressor 4 and the cascade condenser 5 are connected to each other in the compartment 3.
0, and since the compartment 30 is opened to the outside via the opening 13b of the freezer 13, the freezer 13
The space above the top wall of the freezer can be reduced, and the freezer 1
The cooling space of 3 can be effectively used, and the sealing property can be advantageously improved. Even if drainage occurs in the cascade condenser 5, the drainage will not be discharged.
It can be naturally evaporated through 3a and discharged well, and the temperature of the compartment 31 can be lowered.

【0023】また、請求項2記載の発明では、前記区画
室31における区画壁30の底壁に、ドレン配管32を
開口させたから、このドレン配管32を介してドレンを
排出出来るし、また、前記区画室31に庫外の外気を取
り入れることが出来、この外気の取り入れによりドレン
の排出を一層良好に行えし、また、前記区画室31の温
度低下をより一層良好に行えるのである。
According to the second aspect of the invention, since the drain pipe 32 is opened in the bottom wall of the partition wall 30 in the compartment 31, the drain can be discharged through the drain pipe 32. The outside air from the outside can be taken into the compartment 31, and the intake of the outside air allows the drain to be discharged more favorably and the temperature of the compartment 31 to be lowered more favorably.

【0024】その上、ドレン配管32の開口により、庫
壁13aに設ける開口部13bとの間で、外気を自然対
流させられ、従って、前記開口部13bは排熱用の小さ
な開口でよく、この結果、開口部を形成する工数が少な
くてすむし、また、冷凍庫13のシール性をより一層向
上できる利点がある。
Moreover, the opening of the drain pipe 32 allows natural convection of the outside air with the opening 13b provided in the storage wall 13a. Therefore, the opening 13b may be a small opening for exhaust heat. As a result, there is an advantage that the number of steps for forming the opening is small and the sealability of the freezer 13 can be further improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明の第1実施例を示す配管系統図FIG. 1 is a piping system diagram showing a first embodiment of the present invention.

【図2】 第1実施例の冷凍サイクル図FIG. 2 is a refrigeration cycle diagram of the first embodiment.

【図3】 第2実施例を示す配管系統図FIG. 3 is a piping system diagram showing a second embodiment.

【図4】 従来例を示す配管系統図FIG. 4 Piping system diagram showing a conventional example

【符号の説明】[Explanation of symbols]

1 1次側圧縮機 2 1次側凝縮
器 3 室外機 4 2次側圧縮
機 5 カスケ−ドコンデンサ 5a 1次側流路 5b 2次側流路 6 蒸発器 7、8 連絡配管 13 冷凍庫 13a 庫壁 13b 開口部 20 冷却ユニット 30 区画壁 31 区画室 32 ドレン配管
1 Primary Side Compressor 2 Primary Side Condenser 3 Outdoor Unit 4 Secondary Side Compressor 5 Cascade Condenser 5a Primary Side Flow Path 5b Secondary Side Flow Path 6 Evaporator 7, 8 Connecting Pipe 13 Freezer 13a Storage Wall 13b Opening 20 Cooling unit 30 Compartment wall 31 Compartment 32 Drain piping

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 1次側圧縮機機(1)と、1次側凝縮器
(2)とをもつ室外機(3)と、2次側圧縮機(4)と
カスケードコンデンサ(5)及び蒸発器(6)とをもつ
冷却ユニット(20)とを備え、前記カスケードコンデ
ンサ(5)の1次側流路(5a)を前記室外機(3)の
1次側凝縮器(2)及び1次側圧縮機機(1)に連絡配
管(7)(8)で接続した二元冷凍システムの冷却装置
において、 前記冷却ユニット(20)を冷凍庫(13)の庫内上部
に配設して、前記冷却ユニット(20)の2次側圧縮機
(4)とカスケードコンデンサ(5)とを断熱構造の区
画壁(30)で庫内と区画した区画室(31)に内装
し、この区画室(31)を、前記冷凍庫(13)の庫壁
(13a)に設ける開口部(13b)を介して庫外に開
放していることを特徴とする二元冷凍システムの冷却装
置。
1. An outdoor unit (3) having a primary side compressor (1) and a primary side condenser (2), a secondary side compressor (4), a cascade condenser (5) and evaporation. A cooling unit (20) having a condenser (6) and a primary side flow passage (5a) of the cascade condenser (5) and a primary side condenser (2) and a primary side of the outdoor unit (3). In the cooling device of the dual refrigeration system connected to the side compressor (1) by the connecting pipes (7) and (8), the cooling unit (20) is disposed above the inside of the freezer (13), The secondary side compressor (4) and the cascade condenser (5) of the cooling unit (20) are installed in a compartment (31) which is partitioned from the inside by a compartment wall (30) having a heat insulating structure. ) Is opened to the outside of the refrigerator via an opening (13b) provided in the refrigerator wall (13a). Cooling device stage cascade refrigerating system, characterized in that.
【請求項2】 区画室(31)における区画壁(30)
の底壁に、庫外に開放するドレン配管(32)を開口さ
せている請求項1記載の二元冷凍システムの冷却装置。
2. A partition wall (30) in the compartment (31)
The cooling device for the dual refrigeration system according to claim 1, wherein a drain pipe (32) opening to the outside of the refrigerator is opened on the bottom wall of the.
JP16399494A 1994-07-15 1994-07-15 Cooling device for binary freezer system Pending JPH0828978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16399494A JPH0828978A (en) 1994-07-15 1994-07-15 Cooling device for binary freezer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16399494A JPH0828978A (en) 1994-07-15 1994-07-15 Cooling device for binary freezer system

Publications (1)

Publication Number Publication Date
JPH0828978A true JPH0828978A (en) 1996-02-02

Family

ID=15784744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16399494A Pending JPH0828978A (en) 1994-07-15 1994-07-15 Cooling device for binary freezer system

Country Status (1)

Country Link
JP (1) JPH0828978A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010060146A (en) * 2008-09-01 2010-03-18 Sharp Corp Refrigerator-freezer and cooling storage
JP2020176829A (en) * 2009-09-30 2020-10-29 サーモ・フィッシャー・サイエンティフィック・(アシュヴィル)・エルエルシー Refrigeration system mounted in deck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010060146A (en) * 2008-09-01 2010-03-18 Sharp Corp Refrigerator-freezer and cooling storage
JP2020176829A (en) * 2009-09-30 2020-10-29 サーモ・フィッシャー・サイエンティフィック・(アシュヴィル)・エルエルシー Refrigeration system mounted in deck

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