JP3465396B2 - Vending machine cooling system - Google Patents
Vending machine cooling systemInfo
- Publication number
- JP3465396B2 JP3465396B2 JP00771295A JP771295A JP3465396B2 JP 3465396 B2 JP3465396 B2 JP 3465396B2 JP 00771295 A JP00771295 A JP 00771295A JP 771295 A JP771295 A JP 771295A JP 3465396 B2 JP3465396 B2 JP 3465396B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- distributor
- vending machine
- cooling device
- evaporator
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
- F25B41/45—Arrangements for diverging or converging flows, e.g. branch lines or junctions for flow control on the upstream side of the diverging point, e.g. with spiral structure for generating turbulence
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/028—Evaporators having distributing means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、缶飲料などの自動販売
機に搭載される冷却装置に係り、特に複数の蒸発器に冷
媒を分配するディストリビュータの構造の簡素化を図っ
た自動販売機の冷却装置に関する。
【０００２】
【従来の技術】缶飲料などの自動販売機に搭載される冷
却装置では、断熱隔壁で区画された複数の商品収納庫を
個別に冷却できるように各商品収納庫に蒸発器をそれぞ
れ設置しているものがあり、これら蒸発器にはディスト
リビュータから冷媒が分流して供給されるようになって
いる。
【０００３】図５は、この種、冷却装置で用いられるデ
ィストリビュータを示すものである。図示のように、入
口２０側の絞り２１からディストリビュータ内部の円錐
面部２２に向けて冷媒が吹き付けられ、円錐面部２２の
底部外周側の各出口２３より冷媒が分流して流出される
ようになっている。
【０００４】
【発明が解決しようとする課題】しかしながら、図５に
示す従来のディストリビュータにあっては、冷媒を各出
口２３へと均等に分配するためには、絞り２１の寸法や
位置などに精度を要し、ディストリビュータの製造コス
トが高くなるという問題があった。
【０００５】本発明の目的は、複数の蒸発器への冷媒の
均等分配性能を低下させることなく、構造簡単で安価に
製造できる自動販売機の冷却装置を提供することにあ
る。
【０００６】
【課題を解決するための手段】この目的を達成するため
に、本発明は、複数の商品収納庫のそれぞれに、冷凍回
路の一部を構成する蒸発器を設置し、各蒸発器にディス
トリビュータにより冷媒を分配供給するようにした自動
販売機の冷却装置において、前記ディストリビュータの
冷媒流入部が冷媒の流入方向にフレア状に拡径して形成
され、かつ該冷媒流入部の先端が前記ディストリビュー
タの本体内部に位置すると共に、ディストリビュータの
冷媒流出部が前記冷媒流入部より流入される冷媒を受け
るように対向して設けられた円形状をなしその円周方向
に沿って等間隔に冷媒が流出する流出口が形成されたも
のである。
【０００７】
【０００８】
【作用】本発明では、ディストリビュータの冷媒流入部
がフレア状に拡径されているため、冷媒はフレア状の冷
媒流入部に沿って拡大しながら乱流となり均一な気液混
合体となって流れ、円形状の冷媒流出部に対称的に配置
された各流出口から均等に分流する。
【０００９】
【００１０】
【実施例】以下に本発明の実施例を図面を参照しながら
説明する。
【００１１】図３は冷却装置が搭載される自動販売機で
あり、例えば缶ジュースなどの商品を冷却または加温し
て販売するものである。自動販売機は断熱隔壁で区画さ
れた３個の商品収納庫１を有している。３個の商品収納
庫１の内部には、冷却装置の蒸発器２がそれぞれ配置さ
れており、各商品収納庫１内を互いに独立して冷却でき
るようになっている。なお、３個の商品収納庫１のう
ち、冷却／加温兼用収納庫（例えば、夏季には冷却用
に、冬季には加温用に適宜に切り替えて使用されるも
の）には、ヒータ及びヒータファンなどで構成される図
示省略の加温装置が設けられている。
【００１２】図４は図３の自動販売機に搭載される冷却
装置の回路図である。図示のように、冷却装置は、コン
プレッサ３、凝縮器４、電子膨張弁５、ディストリビュ
ータ６、電磁弁７、蒸発器２及びアキュムレータ８など
を冷媒管９で閉回路状に相互に接続して構成されてい
る。冷媒管９は、凝縮器４の下流に設けた開度可変の電
子膨張弁５の下流側においてディストリビュータ６によ
り３分岐され、この３分岐された各冷媒管９にＯＮ／Ｏ
ＦＦ式の電磁弁７及び蒸発器２が直列に接続されてい
る。また、３分岐された冷媒管９は、蒸発器２の下流側
で合流した後、アキュムレータ８を介してコンプレッサ
３、凝縮器４に接続されている。
【００１３】図１は、電子膨張弁５からの冷媒を３個の
蒸発器２へと分流する図４のディストリビュータ６の一
実施例を示すものである。図示のように、ディストリビ
ュータの本体１０はカップ形状をしており、カップ形状
の底部側から冷媒の流入管１１が挿入されている。流入
管１１先端部の冷媒流入部１２は先端側に向かって拡径
されたフレア状ないし円錐状となっている。この冷媒流
入部１２と適宜離間させつつ対向させて円盤状の冷媒流
出部１３が設けられている。冷媒流出部１３はカップ状
の本体１０の開口部を覆って設けられている。冷媒流出
部１３には流入管１１の軸心を中心とした同一円周上に
等間隔に３個の円形の流出口１４が形成されている。各
流出口１４には冷媒を各蒸発器２へと導く冷媒管９が接
続される。
【００１４】ディストリビュータの流入管１１から導入
された冷媒は、冷媒流入部１２から本体１０のチャンバ
内に吹き出されるが、冷媒流入部１２がフレア状に拡径
されているので、冷媒は冷媒流入部１２に沿って拡大し
ながら乱流を発生し、気液が均一に混合された冷媒とな
り、対称配置の冷媒流出部１３の各流出口１４から均等
な流量の冷媒が流出されて各蒸発器２に送られる。冷媒
流入部１２は銅製の流入管１１の先端部をフレア状に拡
大成形することにより容易に且つ安価に作製できる。
【００１５】
【００１６】
【００１７】また、３個の商品収納庫１のうち１個の商
品収納庫１を冷却使用せず加温する場合には、当該商品
収納庫１内の蒸発器２に対する電磁弁７を閉じると共に
冷却負荷の変化に対応させて電子膨張弁５の弁開度を小
さくするが、この場合にも、上記実施例のディストリビ
ュータによって２個の蒸発器２に等分に冷媒を分流でき
るのは勿論である。
【００１８】
【発明の効果】以上、説明したように、本発明によれ
ば、ディストリビュータによる冷媒の均等分配を達成す
るために、従来のように加工等の精度が要求される絞り
を用いることなく、フレア状ないし円錐状の冷媒の拡大
流路の構造によって実現しているので、簡易に製造でき
る安価な自動販売機の冷却装置を提供できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device mounted on a vending machine for canned drinks and the like, and more particularly to a structure of a distributor for distributing a refrigerant to a plurality of evaporators. The present invention relates to a vending machine cooling device which is simplified. 2. Description of the Related Art In a cooling device mounted on a vending machine for canned beverages or the like, an evaporator is provided in each product storage so that a plurality of product storages partitioned by a heat insulating partition can be individually cooled. Some evaporators are provided with a refrigerant that is divided and supplied from a distributor. FIG. 5 shows a distributor used in such a cooling device. As shown in the drawing, the refrigerant is blown from the throttle 21 on the inlet 20 side toward the conical surface portion 22 inside the distributor, and the refrigerant is divided and discharged from each outlet 23 on the outer peripheral side at the bottom of the conical surface portion 22. I have. However, in the conventional distributor shown in FIG. 5, in order to evenly distribute the refrigerant to each outlet 23, the size and position of the throttle 21 must be precisely controlled. And there is a problem that the manufacturing cost of the distributor increases. An object of the present invention is to provide a cooling device for a vending machine which has a simple structure and can be manufactured at low cost without deteriorating the performance of uniformly distributing the refrigerant to a plurality of evaporators. [0006] In order to achieve this object, the present invention provides an evaporator which constitutes a part of a refrigeration circuit in each of a plurality of commodity storages. In a cooling device for a vending machine, wherein a refrigerant is distributed and supplied by a distributor, a refrigerant inflow portion of the distributor is formed so as to expand in a flared shape in a refrigerant inflow direction, and the tip of the refrigerant inflow portion is Distribution
The refrigerant is located inside the main body of the compressor, and has a circular shape provided so that the refrigerant outflow portion of the distributor receives the refrigerant flowing in from the refrigerant inflow portion, and the refrigerant flows at equal intervals along the circumferential direction. An outflow outlet is formed. In the present invention, since the refrigerant inflow portion of the distributor is expanded in a flared shape, the refrigerant becomes turbulent while expanding along the flared refrigerant inflow portion and becomes uniform gas-liquid. It flows as a mixture and is equally divided from each of the outlets symmetrically arranged at the circular refrigerant outlet. An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 shows a vending machine equipped with a cooling device, which sells products such as canned juice by cooling or heating. The vending machine has three product storages 1 partitioned by a heat insulating partition. The evaporators 2 of the cooling devices are arranged inside the three product storages 1, respectively, so that the insides of the respective product storages 1 can be cooled independently of each other. In addition, among the three product storages 1, storages for both cooling and heating (for example, those that are appropriately switched for cooling in summer and for heating in winter) are provided with heaters and heaters. A heating device (not shown) including a heater fan and the like is provided. FIG. 4 is a circuit diagram of a cooling device mounted on the vending machine of FIG. As shown in the figure, the cooling device is configured by connecting a compressor 3, a condenser 4, an electronic expansion valve 5, a distributor 6, a solenoid valve 7, an evaporator 2, an accumulator 8, and the like in a closed circuit manner with a refrigerant pipe 9. Have been. The refrigerant pipe 9 is divided into three branches by a distributor 6 on the downstream side of a variable opening electronic expansion valve 5 provided downstream of the condenser 4, and each of the three branched refrigerant pipes 9 is turned on / off.
The FF type electromagnetic valve 7 and the evaporator 2 are connected in series. Further, the refrigerant pipe 9 branched into three branches is joined on the downstream side of the evaporator 2, and then connected to the compressor 3 and the condenser 4 via the accumulator 8. FIG. 1 shows an embodiment of the distributor 6 shown in FIG. 4 in which the refrigerant from the electronic expansion valve 5 is divided into three evaporators 2. As shown in the drawing, the main body 10 of the distributor has a cup shape, and a refrigerant inflow pipe 11 is inserted from the bottom side of the cup shape. The refrigerant inflow portion 12 at the tip of the inflow pipe 11 has a flare or conical shape whose diameter increases toward the tip. A disk-shaped refrigerant outflow portion 13 is provided so as to be opposed to the refrigerant inflow portion 12 while being appropriately separated. The refrigerant outlet 13 is provided to cover the opening of the cup-shaped main body 10. In the refrigerant outlet 13, three circular outlets 14 are formed at equal intervals on the same circumference around the axis of the inlet pipe 11. Each outlet 14 is connected to a refrigerant pipe 9 for guiding the refrigerant to each evaporator 2. The refrigerant introduced from the inflow pipe 11 of the distributor is blown out from the refrigerant inflow section 12 into the chamber of the main body 10. However, since the refrigerant inflow section 12 has a flared diameter, the refrigerant flows into the chamber. A turbulent flow is generated while expanding along the portion 12, and the gas-liquid becomes a uniformly mixed refrigerant, and a uniform flow rate of the refrigerant is discharged from each outlet 14 of the symmetrically arranged refrigerant outlet 13, and each evaporator Sent to 2. The refrigerant inflow section 12 can be easily and inexpensively manufactured by expanding the tip of the copper inflow pipe 11 into a flared shape. In the case where one of the three commodity storages 1 is heated without cooling, the evaporator 2 in the commodity storage 1 is heated. While the solenoid valve 7 is closed and the valve opening of the electronic expansion valve 5 is reduced in accordance with the change in the cooling load, the refrigerant is equally divided into the two evaporators 2 by the distributor of the above embodiment. Of course, it can be diverted. As described above, according to the present invention, according to the present invention, in order to achieve the uniform distribution of the refrigerant by the distributor, there is no need to use a throttle which requires precision such as processing as in the prior art. Since it is realized by the structure of the flare-shaped or conical-shaped enlarged flow path of the refrigerant, an inexpensive vending machine cooling device that can be easily manufactured can be provided.
【図面の簡単な説明】
【図１】本発明の自動販売機の冷却装置の要部をなすデ
ィストリビュータの一実施例を示すもので、図１（ａ）
は縦断面図、図１（ｂ）は冷媒流出部側の端面図であ
る。
【図２】ディストリビュータの他の実施例を示す縦断面
図である。
【図３】本発明が適用される自動販売機の概略構成図で
ある。
【図４】図３の自動販売機に搭載される冷却装置の冷凍
回路図である。
【図５】従来の自動販売機の冷却装置に用いられている
ディストリビュータを示す概略構成図である。
【符号の説明】
１ 商品収納庫
２ 蒸発器
６ ディストリビュータ
１０ 本体
１１ 流入管
１２ 冷媒流入部
１３ 冷媒流出部
１４ 流出口BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows one embodiment of a distributor which is a main part of a vending machine cooling device of the present invention, and FIG.
FIG. 1B is a longitudinal sectional view, and FIG. 1B is an end view on the refrigerant outflow portion side. FIG. 2 is a longitudinal sectional view showing another embodiment of the distributor. FIG. 3 is a schematic configuration diagram of a vending machine to which the present invention is applied. 4 is a refrigeration circuit diagram of a cooling device mounted on the vending machine of FIG. FIG. 5 is a schematic configuration diagram showing a distributor used in a cooling device of a conventional vending machine. [Description of Signs] 1 Product storage 2 Evaporator 6 Distributor 10 Main body 11 Inflow pipe 12 Refrigerant inflow part 13 Refrigerant outflow part 14 Outlet
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−97860（ＪＰ，Ａ) 特開 昭62−175564（ＪＰ，Ａ) 実開 昭49−122451（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 41/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-97860 (JP, A) JP-A-62-175564 (JP, A) JP-A-49-122451 (JP, U) (58) Survey Field (Int. Cl. 7 , DB name) F25B 41/00
Claims (1)
の一部を構成する蒸発器を設置し、各蒸発器にディスト
リビュータにより冷媒を分配供給するようにした自動販
売機の冷却装置において、前記ディストリビュータの冷
媒流入部が冷媒の流入方向にフレア状に拡径して形成さ
れ、かつ該冷媒流入部の先端が前記ディストリビュータ
の本体内部に位置すると共に、ディストリビュータの冷
媒流出部が前記冷媒流入部より流入される冷媒を受ける
ように対向して設けられた円形状をなしその円周方向に
沿って等間隔に冷媒が流出する流出口が形成されたこと
を特徴とする自動販売機の冷却装置。(57) [Claims 1] An evaporator constituting a part of a refrigeration circuit is installed in each of a plurality of commodity storages, and a distributor distributes and supplies a refrigerant to each evaporator. In the cooling device for a vending machine, the refrigerant inflow portion of the distributor is formed so as to have a flared diameter in the refrigerant inflow direction, and the distal end of the refrigerant inflow portion is provided at the distributor.
And a refrigerant outlet portion of the distributor is formed in a circular shape provided so as to face the refrigerant flowing in from the refrigerant inflow portion so as to receive the refrigerant flowing from the refrigerant inflow portion, and the refrigerant flows out at equal intervals along the circumferential direction. A cooling device for a vending machine, wherein a cooling outlet is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00771295A JP3465396B2 (en) | 1995-01-20 | 1995-01-20 | Vending machine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00771295A JP3465396B2 (en) | 1995-01-20 | 1995-01-20 | Vending machine cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08200889A JPH08200889A (en) | 1996-08-06 |
| JP3465396B2 true JP3465396B2 (en) | 2003-11-10 |
Family
ID=11673364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00771295A Expired - Fee Related JP3465396B2 (en) | 1995-01-20 | 1995-01-20 | Vending machine cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3465396B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5567935B2 (en) * | 2010-08-19 | 2014-08-06 | 日立アプライアンス株式会社 | Refrigerant distributor and refrigeration cycle apparatus |
-
1995
- 1995-01-20 JP JP00771295A patent/JP3465396B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08200889A (en) | 1996-08-06 |
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