JP5092634B2 - vending machine - Google Patents

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JP5092634B2
JP5092634B2 JP2007232347A JP2007232347A JP5092634B2 JP 5092634 B2 JP5092634 B2 JP 5092634B2 JP 2007232347 A JP2007232347 A JP 2007232347A JP 2007232347 A JP2007232347 A JP 2007232347A JP 5092634 B2 JP5092634 B2 JP 5092634B2
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storage
suction fan
refrigerant
vending machine
opening
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JP2009064297A (en
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隆宏 井上
寿和 境
達也 瀬尾
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、缶飲料などの商品を冷却あるいは加温して販売する自動販売機において、冷却あるいは加温システムに使用する炭化水素冷媒が庫内に漏洩した場合に、庫内に外気を吸入し庫内の冷媒濃度を抑制する自動販売機に関するものである。   The present invention relates to a vending machine that sells products such as canned beverages by cooling or heating, and when hydrocarbon refrigerant used in the cooling or heating system leaks into the cabinet, the outside air is sucked into the cabinet. The present invention relates to a vending machine that suppresses the refrigerant concentration in the warehouse.

近年、オゾン層保護および地球温暖化防止の観点から、イソブタンやプロパンなどの炭化水素からなる自然冷媒を使用した冷却システムが望まれている。   In recent years, a cooling system using a natural refrigerant made of hydrocarbons such as isobutane and propane has been desired from the viewpoint of protecting the ozone layer and preventing global warming.

自動販売機などの冷却貯蔵庫において可燃性のある炭化水素を冷媒として使用する際には防爆対応した電気部品などが用いられるが、さらに安全を高めるために排気ファンおよびダンパー機構を用いて庫内に漏洩した冷媒を庫外へ排出し庫内の冷媒濃度を抑制するものが提案されている(例えば、特許文献1参照)。   When combustible hydrocarbons are used as refrigerants in cooling storages such as vending machines, explosion-proof electrical parts are used, but in order to further increase safety, exhaust fans and damper mechanisms are used to store the interior. There has been proposed one that discharges the leaked refrigerant to the outside of the warehouse and suppresses the refrigerant concentration in the warehouse (see, for example, Patent Document 1).

また、冷媒漏洩を検知して、貯蔵庫の扉を強制的に開放する手段や、庫内に不活性ガスを噴出させる手段、庫内に漏洩した可燃性ガスを吸収または吸着する手段を備えたものが提案されている(例えば、特許文献2参照)。   Also equipped with means for detecting refrigerant leakage and forcibly opening the storage door, means for injecting inert gas into the storage, and means for absorbing or adsorbing flammable gas leaked into the storage Has been proposed (see, for example, Patent Document 2).

以下、図面を参照しながら従来の自動販売機を説明する。   Hereinafter, a conventional vending machine will be described with reference to the drawings.

図3は従来の自動販売機の縦断面図である。   FIG. 3 is a longitudinal sectional view of a conventional vending machine.

図3において、自動販売機の本体1は、サンプル商品を展示し、金銭授受や商品搬出を行う外扉2と、飲料缶などの商品を貯蔵する貯蔵庫3とからなる。貯蔵庫3の周囲にはウレタン発泡材などからなる断熱壁として背面パネル4、上面パネル5、下面パネル6、上部内扉7、下部内扉8を配置している。   In FIG. 3, the main body 1 of the vending machine includes an outer door 2 that displays sample merchandise, transfers money and carries out merchandise, and a storage 3 that stores merchandise such as beverage cans. Around the storage 3, a rear panel 4, an upper panel 5, a lower panel 6, an upper inner door 7, and a lower inner door 8 are disposed as heat insulating walls made of urethane foam or the like.

そして、下部内扉8に商品搬出口9、外扉2に商品取り出し口10を設け、商品販売時には商品搬出口9を通して貯蔵庫3に貯蔵している商品をドアシュート11に搬出した後、商品取り出し口10を介して消費者が搬出された商品を受け取る。   Then, a product outlet 9 is provided in the lower inner door 8 and a product outlet 10 is provided in the outer door 2, and when the product is sold, the product stored in the storage 3 through the product outlet 9 is taken out to the door chute 11 and then the product is taken out. The consumer receives the goods carried out through the mouth 10.

また、貯蔵庫3の上部に吊り下げ金具12を配置し、缶飲料などの商品を保持する複数の商品収納コラム13〜15を吊り下げることですべての商品を収納している。   Moreover, the hanging metal fitting 12 is arrange | positioned at the upper part of the storage 3, and all the goods are accommodated by suspending several goods storage columns 13-15 holding goods, such as a can drink.

貯蔵庫3の下部にはヒータ16、庫内ファン17、蒸発器18を設置し、貯蔵庫3の外に設置された圧縮機19、庫外ファン20、凝縮器21とともに形成された冷却加温システムを用いて、貯蔵庫3内の商品の加温と冷却を行っている。商品の加温は約55℃、冷却は約3℃に設定される。冷却加温システムの冷媒としては、イソブタンやプロパンなどの炭化水素を主成分とする可燃性冷媒を使用している。   A heater 16, an internal fan 17, and an evaporator 18 are installed in the lower part of the storage 3, and a cooling and heating system formed with a compressor 19, an external fan 20, and a condenser 21 installed outside the storage 3. The product in the storage 3 is used for heating and cooling. The warming of the product is set at about 55 ° C and the cooling is set at about 3 ° C. As the refrigerant for the cooling and heating system, a flammable refrigerant mainly composed of hydrocarbons such as isobutane and propane is used.

そして、貯蔵庫3の下部に冷媒の漏洩を検知する漏洩検知手段22を設置し、本体1の背面上部に外気を貯蔵庫3内に吸気する吸気口23、本体1の背面下部に貯蔵庫3内の空気を排出する排気口24と排気ファン25を設置している。   Leakage detection means 22 for detecting refrigerant leakage is installed at the lower part of the storage 3, the air inlet 23 for sucking outside air into the storage 3 at the upper back of the main body 1, and the air in the storage 3 at the lower back of the main body 1. An exhaust port 24 and an exhaust fan 25 are installed.

ここで、貯蔵庫3の内外に設置された電気部品は、自販機工業会自主基準(JVMA 2B001、附属書2「冷却ユニットの安全」)に示した要件を満足するように、防爆構造を有している。この防爆構造は、冷却加温システムから冷媒が漏洩した場合に電気部品が着火源とならないようにするものであり、漏洩した冷媒を拡散する構造や表面温度を低く抑える構造、火炎が外部に伝播しない簡易防爆構造などを含む。   Here, the electrical components installed inside and outside the storage 3 have an explosion-proof structure so as to satisfy the requirements shown in the Vending Machine Manufacturers Association voluntary standards (JVMA 2B001, Annex 2 “Cooling Unit Safety”). Yes. This explosion-proof structure prevents electrical components from becoming an ignition source when refrigerant leaks from the cooling and heating system. The structure that diffuses the leaked refrigerant, the structure that keeps the surface temperature low, and the flame to the outside Includes a simple explosion-proof structure that does not propagate.

以上のように構成された従来例の自動販売機について、以下にその動作を説明する。   The operation of the conventional vending machine configured as described above will be described below.

貯蔵庫3内に配置された冷却加温システムの配管などが破損して冷媒が漏洩し、漏洩検知手段22が冷媒を検知すると、吸気口23および排気口24のダンパーを開とするとともに排気ファン25を運転する。   When the piping of the cooling and heating system arranged in the storage 3 is broken and the refrigerant leaks, and the leak detection means 22 detects the refrigerant, the dampers of the intake port 23 and the exhaust port 24 are opened and the exhaust fan 25 is opened. To drive.

これによって、吸気口23から貯蔵庫3内に外気を取り入れるとともに排気口24を通して貯蔵庫3内の空気を外部へ強制排気することで貯蔵庫3内を外気で換気することができ、貯蔵庫3内の冷媒濃度を速やかに可燃下限値以下として爆発のリスクが軽減される。
特開2001−134827号公報 特開2000−105034号公報
Thus, outside air can be taken into the storage 3 through the air inlet 23 and the air in the storage 3 can be vented to the outside through the exhaust port 24 to ventilate the inside of the storage 3 with the outside air. As soon as the flammable lower limit is reached, the risk of explosion is reduced.
JP 2001-134827 A JP 2000-105034 A

しかしながら、貯蔵庫3の下方に排気口24を商品搬出口9と別途で設けた場合、ウレタン発泡材などからなる断熱壁に比べて著しく断熱性能が低下することで、冷却加温システムの負荷量が増加して自動販売機の消費電力量が増大する問題とともに、排気口24や吸入口23を本体1を開口して新たに設けることは、防犯の面でも課題があった。   However, when the exhaust port 24 is provided separately from the product outlet 9 below the storage 3, the heat insulation performance is significantly reduced as compared with the heat insulation wall made of urethane foam or the like, so that the load of the cooling and heating system is reduced. Along with the problem that the power consumption of the vending machine increases and newly providing the exhaust port 24 and the suction port 23 by opening the main body 1, there is also a problem in terms of crime prevention.

本発明は、従来の課題を解決するもので、貯蔵庫の断熱性能を損なわず、従来から庫内外を開口する開口部を漏洩冷媒の排気孔として使用することで本体に露出する部分に孔を開けないので、防犯面での課題を克服し、かつ確実に安全に貯蔵庫内の冷媒濃度を速やかに低下させる構造を提供することを目的とする。   The present invention solves the conventional problems, and does not impair the heat insulation performance of the storage. Conventionally, an opening that opens the inside and outside of the storage is used as an exhaust hole for the leaked refrigerant, so that a hole is formed in a portion exposed to the main body. Therefore, an object of the present invention is to provide a structure capable of overcoming the crime prevention problem and reliably and safely reducing the refrigerant concentration in the storage quickly.

上記従来の課題を解決するために、本発明の自動販売機は自動販売機本体内に商品を貯蔵する貯蔵庫と、前記貯蔵庫内の下方に前記貯蔵庫を冷却する冷却システムの室内熱交
換器と前記室内熱交換器に接続される接続配管と、前記貯蔵庫の前面開口部を開閉可能に形成した内扉とを備えた自動販売機において、前記内扉は前記貯蔵庫外の空気を前記貯蔵庫内に吸入する吸入ファンを内蔵する開口部と、前記吸入ファンの前記貯蔵庫内側に前記吸入ファンが停止している時は自重で前記開口部を遮断し前記吸入ファンが運転されると前記吸入ファンの吐出空気の動圧によって前記開口部を開放する部材とを備え、前記吸入ファンは前記室内熱交換器より上部に配置し、前記室内熱交換器または前記接続配管から冷媒が漏れたことを検知する漏洩検知手段が漏洩冷媒を検知した時、前記吸入ファンを運転して前記貯蔵庫内へ空気を吐出し庫外へ前記漏洩冷媒を排気するものである。
In order to solve the above-described conventional problems, a vending machine according to the present invention includes a storage for storing commodities in a vending machine body, and an indoor heat exchanger of a cooling system that cools the storage in the lower part of the storage. a connecting pipe connected to the indoor heat exchanger, the vending machine comprising a door inner formed openably the front opening of the reservoir, said door, said reservoir and said reservoir outside air When the suction fan is stopped inside the storage part of the suction fan and when the suction fan is operated with its own weight, the suction fan is operated. and a member for opening the opening by the dynamic pressure of the discharged air, the suction fan is disposed above the said indoor heat exchanger detects that the refrigerant leaks from the indoor heat exchanger or the connecting pipe When mode detection unit detects the leakage coolant, the one in which driving a suction fan for exhausting the leaked refrigerant to the outside of box ejects air into said reservoir.

これによって、室内熱交換器より上部で吸入ファンを内蔵する開口部が形成される内扉の前面には外扉が配置されるので、外部からの悪戯を防止し、防犯性を高めるとともに、漏洩検知手段が漏洩冷媒を検知した時には吸入ファンの運転によりを開口部を通じて外部空気を吸入し庫内へ吐出して、漏洩冷媒を外部へ排気するので、自動販売機本体の熱負荷量の増大を抑制しながら、安全に貯蔵庫内の冷媒濃度を速やかに低下させることができる。また、吸入ファンの貯蔵庫内側に吸入ファンが停止している時は自重で開口部を遮断し吸入ファンが運転されると吸入ファンの吐出空気の動圧によって開口部を開放する部材を設けたので、吸入ファンが停止している通常時は貯蔵庫の気密性を高めることができ、虫の侵入を防止し、外気侵入による結露防止、熱負荷増大を抑制し貯蔵庫の断熱性能を損なうことなく、冷媒漏洩時には吸入ファンの吐出空気の動圧によって速やかに開口部を開放することができる。 As a result, the outer door is arranged on the front of the inner door where the opening containing the suction fan is formed above the indoor heat exchanger , preventing mischief from the outside, improving crime prevention, and leaking. When the detection means detects the leaked refrigerant, the intake fan is operated to suck the external air through the opening and discharge it into the warehouse, and exhaust the leaked refrigerant to the outside, increasing the heat load on the vending machine body. While suppressing , the refrigerant | coolant density | concentration in a storage can be reduced rapidly rapidly. In addition, when the suction fan is stopped inside the storage area of the suction fan, a member is provided to open the opening by the dynamic pressure of the discharge air of the suction fan when the suction fan is operated by its own weight and the suction fan is operated. When the intake fan is stopped, the airtightness of the storage can be increased, the insects can be prevented from entering, the condensation due to the intrusion of the outside air can be prevented, the heat load can be suppressed, and the heat insulation performance of the storage can be reduced. At the time of leakage, the opening can be quickly opened by the dynamic pressure of the air discharged from the suction fan.

本発明の自動販売機は、室内熱交換器より上部で吸入ファンを内蔵する開口部が形成される内扉の前面には外扉が配置されるので、外部からの悪戯を防止し、防犯性を高めるとともに、漏洩検知手段が漏洩冷媒を検知した時には吸入ファンの運転によりを開口部を通じて外部空気を吸入し庫内へ吐出して、漏洩冷媒を外部へ排気するので、自動販売機本体の熱負荷量の増大を抑制しながら安全に貯蔵庫内の冷媒濃度を速やかに低下させることができる。また、吸入ファンの貯蔵庫内側に吸入ファンが停止している時は自重で開口部を遮断し吸入ファンが運転されると吸入ファンの吐出空気の動圧によって開口部を開放する部材を設けたので、吸入ファンが停止している通常時は貯蔵庫の気密性を高めることができ、虫の侵入を防止し、外気侵入による結露防止、熱負荷増大を抑制し貯蔵庫の断熱性能を損なうことなく、冷媒漏洩時には吸入ファンの吐出空気の動圧によって速やかに開口部を開放することができる。 In the vending machine of the present invention, the outer door is arranged in front of the inner door in which the opening containing the suction fan is formed above the indoor heat exchanger, so that mischief from the outside is prevented and crime prevention In addition, when the leak detection means detects the leaked refrigerant, external air is sucked through the opening through the suction fan and discharged into the warehouse, and the leaked refrigerant is exhausted to the outside. while suppressing the increase in the load safely refrigerant concentration in the reservoir can be rapidly reduced. In addition, when the suction fan is stopped inside the storage area of the suction fan, a member is provided to open the opening by the dynamic pressure of the discharge air of the suction fan when the suction fan is operated by its own weight and the suction fan is operated. When the intake fan is stopped, the airtightness of the storage can be increased, the insects can be prevented from entering, the condensation due to the intrusion of the outside air can be prevented, the heat load can be suppressed, and the heat insulation performance of the storage can be reduced. At the time of leakage, the opening can be quickly opened by the dynamic pressure of the air discharged from the suction fan.

本発明の請求項1に記載の発明は、自動販売機本体内に商品を貯蔵する貯蔵庫と、前記貯蔵庫内の下方に前記貯蔵庫を冷却する冷却システムの室内熱交換器と前記室内熱交換器
に接続される接続配管と、前記貯蔵庫の前面開口部を開閉可能に形成した内扉とを備えた自動販売機において、前記内扉は前記貯蔵庫外の空気を前記貯蔵庫内に吸入する吸入ファンを内蔵する開口部と、前記吸入ファンの前記貯蔵庫内側に前記吸入ファンが停止している時は自重で前記開口部を遮断し前記吸入ファンが運転されると前記吸入ファンの吐出空気の動圧によって前記開口部を開放する部材とを備え、前記吸入ファンは前記室内熱交換器より上部に配置し、前記室内熱交換器または前記接続配管から冷媒が漏れたことを検知する漏洩検知手段が漏洩冷媒を検知した時、前記吸入ファンを運転して前記貯蔵庫内へ空気を吐出し庫外へ前記漏洩冷媒を排気するものであり、室内熱交換器より上部で吸入ファンを内蔵する開口部が形成される内扉の前面には外扉が配置されるので、から悪戯を防止し、防犯性を高めるとともに、漏洩検知手段が漏洩冷媒を検知した時には吸入ファンの運転によりを開口部を通じて外部空気を吸入し庫内へ吐出して、漏洩冷媒を外部へ排気するので、自動販売機本体の熱負荷量の増大を抑制しながら、安全に貯蔵庫内の冷媒濃度を速やかに低下させることができる。また、吸入ファンの貯蔵庫内側に吸入ファンが停止している時は自重で開口部を遮断し吸入ファンが運転されると吸入ファンの吐出空気の動圧によって開口部を開放する部材を設けたので、吸入ファンが停止している通常時は貯蔵庫の気密性を高めることができ、虫の侵入を防止し、外気侵入による結露防止、熱負荷増大を抑制し貯蔵庫の断熱性能を損なうことなく、冷媒漏洩時には吸入ファンの吐出空気の動圧によって速やかに開口部を開放することができる。
The invention according to claim 1 of the present invention includes a storage for storing commodities in a vending machine body, an indoor heat exchanger of a cooling system for cooling the storage in the storage, and the indoor heat exchanger. a connecting pipe connected, in an automatic vending machine that includes a door inner formed openably the front opening of the reservoir, said door, a suction fan for sucking the reservoir outside air into said reservoir The built-in opening and when the suction fan is stopped inside the storage of the suction fan, the opening is blocked by its own weight, and when the suction fan is operated, the dynamic pressure of the discharge air of the suction fan and a member for opening the opening, the suction fan is the more placed on top indoor heat exchanger, leakage detection means leak refrigerant to detect that refrigerant has leaked from the indoor heat exchanger or the connecting pipe When it is detected, the are those driving a suction fan for exhausting the leaked refrigerant to the outside of box ejects air into said reservoir, the opening having a built-in suction fan above the indoor heat exchanger is formed since the front surface of the inner door outer door is arranged to prevent mischief from outside, external air to increase the security of through openings by the operation of the suction fan when the leak detection means detects the leakage coolant Since the refrigerant is sucked out and discharged into the warehouse and the leaked refrigerant is exhausted to the outside , the refrigerant concentration in the storage can be quickly and safely reduced while suppressing an increase in the heat load of the vending machine main body . In addition, when the suction fan is stopped inside the storage area of the suction fan, a member is provided to open the opening by the dynamic pressure of the discharge air of the suction fan when the suction fan is operated by its own weight and the suction fan is operated. When the intake fan is stopped, the airtightness of the storage can be increased, the insects can be prevented from entering, the condensation due to the intrusion of the outside air can be prevented, the heat load can be suppressed, and the heat insulation performance of the storage can be reduced. At the time of leakage, the opening can be quickly opened by the dynamic pressure of the air discharged from the suction fan .

本発明の請求項2に記載の発明は、請求項1に記載の発明にさらに、内扉の下方に商品を搬出する商品搬出口、室内熱交換器の下部に前記室内熱交換器で発生した除霜水を排出する排水孔を備えた自動販売機において、漏洩冷媒は前記商品搬出口または前記排水孔を通って貯蔵庫外へ排気されるものであり、貯蔵庫に滞留する冷媒を商品搬出口やドレン水排出口を介して排気するので貯蔵庫の断熱性能低下を抑制し、安全に貯蔵庫内の冷媒濃度を速やかに低下させることができる。 The invention according to claim 2 of the present invention is further generated in the indoor heat exchanger at the lower part of the indoor heat exchanger, the commodity outlet for unloading the commodity below the inner door, and the invention according to claim 1. in an automatic vending machine provided with a drain hole for discharging the defrosted water, the leakage coolant is intended to be discharged to the storage chamber out through the product outlet port or the drain hole, product unloading opening the refrigerant staying in the reservoir Further, since the exhaust is performed through the drain water discharge port, it is possible to suppress a decrease in the heat insulation performance of the storage and to quickly reduce the refrigerant concentration in the storage safely.

本発明の請求項3に記載の発明は、請求項1または2に記載の発明において、吸入ファンの吐出空気の動圧によって開口部を開放する部材にシート状部材を用いたので、軽量で簡単な構造にできる。 In the invention according to claim 3 of the present invention, since the sheet-like member is used as the member for opening the opening by the dynamic pressure of the discharge air of the suction fan in the invention according to claim 1 or 2, it is lightweight and simple. It can be a simple structure.

本発明の請求項4に記載の発明は、請求項1から3のいずれか一項に記載の発明において、冷媒を可燃性冷媒としたもので、貯蔵庫内の冷媒濃度を速やかに低下させ、安全性を確保することができる。   The invention according to claim 4 of the present invention is the invention according to any one of claims 1 to 3, wherein the refrigerant is a flammable refrigerant, and the concentration of the refrigerant in the storage is rapidly reduced, so that safety can be achieved. Sex can be secured.

以下、本発明による冷凍システムの実施の形態について図面を参照しながら説明する。なお、従来と同一構成については、同一符号を付して詳細な説明を省略する。   Hereinafter, embodiments of a refrigeration system according to the present invention will be described with reference to the drawings. In addition, about the same structure as the past, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

(実施の形態1)
図1は本発明の実施の形態1における自動販売機の縦断面図である。図2は同実施の形態の自動販売機の要部を示す縦断面図である。なお、従来例と同一の構成については、同一番号を付して詳細な説明は省略する。
(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a vending machine according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view showing a main part of the vending machine according to the embodiment. In addition, about the same structure as a prior art example, the same number is attached | subjected and detailed description is abbreviate | omitted.

図1と図2において、自動販売機本体30内には飲料商品や食品を収納し貯蔵する貯蔵庫31が形成され、実施の形態の場合、貯蔵庫31内には飲料缶商品やペットボトルを収納する商品収納コラム32が構成されている。自動販売機本体30と貯蔵庫31の間には、ウレタン発泡材などからなる背面パネル33、上面パネル34、下面パネル35の断熱壁が配置している。   1 and 2, a storage 31 for storing and storing beverage products and food is formed in the vending machine main body 30, and in the case of the embodiment, beverage can products and plastic bottles are stored in the storage 31. A product storage column 32 is configured. Between the vending machine body 30 and the storage 31, heat insulating walls of a rear panel 33, an upper panel 34, and a lower panel 35 made of urethane foam or the like are disposed.

また自動販売機本体30の前面開口部には、ウレタン発泡材などからなる前面パネルとして内扉36が開閉自在に形成され、貯蔵庫内と庫外で空気対流がないように構成されている。内扉36は上部内扉36aと下部内扉36bの上下に分割して構成されている。   An inner door 36 is formed at the front opening of the vending machine main body 30 as a front panel made of urethane foam so as to be openable and closable so that there is no air convection inside and outside the storage. The inner door 36 is divided into upper and lower parts of an upper inner door 36a and a lower inner door 36b.

また内扉36の前方には、サンプル商品を展示し、金銭投入口や商品取出口38を備えた外扉37が自動販売機本体30に開閉自在に形成されている。上部内扉36aは外扉37と連動して開閉可能に形成し、自動販売機本体30の開口部上部を断熱区画する。下部内扉36bは外扉37に連動せず、自動販売機本体30の開口部下部を断熱区画している。   In front of the inner door 36, a sample product is displayed, and an outer door 37 having a money slot and a product outlet 38 is formed in the vending machine main body 30 so as to be openable and closable. The upper inner door 36 a is formed so as to be openable and closable in conjunction with the outer door 37, and insulates the upper part of the opening of the vending machine main body 30. The lower inner door 36b does not interlock with the outer door 37, and heat-insects the lower portion of the opening of the vending machine main body 30.

上部内扉36aには開口部39が形成され、庫外の空気を吸込んで庫内に吐出する吸入ファン40が内蔵されている。吸入ファン40の庫内側で、その前面にはシート状部材41が配置し、吸入ファン40を通じて庫内外の連通路を遮断している。   An opening 39 is formed in the upper inner door 36a, and a suction fan 40 that sucks air outside the box and discharges it into the box is incorporated. A sheet-like member 41 is disposed on the front side of the suction fan 40 on the front side, and the communication path inside and outside the storage is blocked through the suction fan 40.

また下部内扉36bには商品取出口38に商品を搬出する商品搬出口42が庫外側へ開閉自在に備えられている。   In addition, the lower inner door 36b is provided with a product outlet 42 for taking out products to the product outlet 38 so as to be opened and closed to the outside of the warehouse.

貯蔵庫31内の下方には、冷却加温室50が構成され、冷却加温室50内には庫内を加温するときのヒータ43と庫内を冷却する室内熱交換器44と庫内ファン45と漏洩検知手段46が配置されている。ヒータ43と室内熱交換器44を自動販売機本体30の前後方向に配置し、強制対流させる庫内ファン45はヒータ43と室内熱交換器44の延長線上に配置されて、商品搬出口42方向に庫内空気を吐出するように運転して庫内を加温または冷却保存している。また冷媒の漏洩を検知する漏洩検知手段46は貯蔵庫31内の下方で庫内ファン45の前方に配置されている。   A cooling greenhouse 50 is configured in the lower part of the storage 31, and a heater 43 for heating the interior of the cooling compartment 50, an indoor heat exchanger 44 for cooling the interior, and an internal fan 45 are provided. Leakage detection means 46 is arranged. The heater 43 and the indoor heat exchanger 44 are arranged in the front-rear direction of the vending machine main body 30, and the in-compartment fan 45 for forced convection is arranged on the extension line of the heater 43 and the indoor heat exchanger 44, and the product outlet 42 direction. It is operated so as to discharge the air in the cabinet, and the interior is warmed or cooled and stored. In addition, a leakage detection means 46 for detecting the leakage of the refrigerant is disposed in the lower part of the storage 31 and in front of the internal fan 45.

冷却加温室50の上部には商品が転動して商品搬出口42に導くシュート51が前方へ傾斜配置している。   On the upper part of the cooling chamber 50, a chute 51 is arranged so as to incline forward while the product rolls and leads to the product outlet 42.

貯蔵庫31の下部には機械室52が構成され、圧縮機53、庫外ファン54、室外熱交換器55があり、貯蔵庫31内の商品の加温と冷却を行っている。商品の加温は約55℃、冷却は約3℃に設定される。冷却加温システムの冷媒としては、可燃性冷媒であるイソブタンを使用している。   A machine room 52 is formed in the lower part of the storage 31, and includes a compressor 53, an outdoor fan 54, and an outdoor heat exchanger 55, and warms and cools products in the storage 31. The warming of the product is set at about 55 ° C and the cooling is set at about 3 ° C. Isobutane, which is a flammable refrigerant, is used as a refrigerant for the cooling and heating system.

図2は、吸入ファン40とその周辺の縦断面図である。庫内側で、吸入ファン40による空気の吐出側にはシート状部材41が配置している。シート状部材41上部は上部内扉36aにビス等で固定されており、シート状部材41下部は自重で下方に垂れ下がった状態で自由端となっている。また吸入ファン40とシート状部材41との間にはウレタンフォームなどのシール材56があり、開口部39の周囲に対応するようにシート状部材41に貼付されている。そしてシート状部材41はシール材56の重さも加わり自重によって下方に垂れ下がりやすくなり、シール材56は上部内扉36aに接触した状態で維持され、シート状部材41とシール材56とによって吸入ファン49を通じて庫内外の空気が連通状態にあるのを仕切っている。   FIG. 2 is a longitudinal sectional view of the suction fan 40 and its periphery. A sheet-like member 41 is disposed on the air discharge side of the suction fan 40 inside the refrigerator. The upper part of the sheet-like member 41 is fixed to the upper inner door 36a with a screw or the like, and the lower part of the sheet-like member 41 is a free end in a state where it hangs downward due to its own weight. Further, a sealing material 56 such as urethane foam is provided between the suction fan 40 and the sheet-like member 41 and is affixed to the sheet-like member 41 so as to correspond to the periphery of the opening 39. Then, the sheet-like member 41 is added with the weight of the sealing material 56 and is easily hung downward by its own weight. The sealing material 56 is maintained in contact with the upper inner door 36a, and the suction fan 49 is supported by the sheet-like member 41 and the sealing material 56. The air inside and outside the cabinet is in communication with each other.

また、シール材56は、シート状部材41に両面テープその他のテープで固定、またはマグネット材で板金との間でシールすることもできる。またここで、吸入ファン40は上部内扉36aに設けているが、これは、貯蔵庫31の中で、配管の溶接箇所があり最も冷媒漏れ箇所として可能性が高い蒸発器44と最も離れた対角の場所にあり、外気導入と完全な庫内空気置換に最も適している。さらに、上部内扉36aは外扉37で覆われているため、防犯上の心配がなく、軽量で簡単な構造で開口部39を形成することができる。   Further, the sealing material 56 can be fixed to the sheet-like member 41 with a double-sided tape or other tape, or sealed between a sheet metal with a magnet material. Also, here, the suction fan 40 is provided on the upper inner door 36a, which is the most distant pair of the evaporator 44 in the storage 31 where there is a welded part of the pipe and which is most likely to be a refrigerant leaking part. Located at the corner, it is most suitable for outside air introduction and complete indoor air replacement. Furthermore, since the upper inner door 36a is covered with the outer door 37, there is no worry about crime prevention, and the opening 39 can be formed with a light and simple structure.

自動販売機の販売商品(缶飲料などの商品)は複数の商品収納コラム32に収納され、商品搬出は下方から順次行われる。一般的には省エネのため、庫内の下部のみ適正な温度に冷却や加温を行うように制御されている。   The products sold by the vending machine (products such as can drinks) are stored in a plurality of product storage columns 32, and the products are sequentially carried out from below. Generally, in order to save energy, only the lower part in the cabinet is controlled to cool or warm to an appropriate temperature.

また、特に加温の場合は、中身商品の品質確保の観点から商品収納コラムの上部においては、常温に近い保存状態が好ましいとされている。   In particular, in the case of warming, it is considered that a storage state close to normal temperature is preferable in the upper part of the product storage column from the viewpoint of ensuring the quality of the content product.

したがって、開口部39を貯蔵庫31の上部となる上部内扉36aに設けることで、貯蔵庫31の断熱性能への影響を抑制することができる。また、開口部39の庫内側にシート状部材41とその周囲にシート材56を備えることで、気密性を高めた構造としているため、吸入ファン40からの虫の侵入を防止し、また外気侵入による結露防止、販売直前の商品への熱負荷増大を抑制することができる。   Therefore, by providing the opening 39 in the upper inner door 36 a that is the upper part of the storage 31, the influence on the heat insulation performance of the storage 31 can be suppressed. In addition, since the sheet-like member 41 and the sheet material 56 around the opening 39 are provided with the sheet material 56, the structure is improved in airtightness, so that insects can be prevented from entering from the suction fan 40 and outside air can be introduced. It is possible to prevent dew condensation due to, and to suppress an increase in heat load on the product immediately before sale.

ここで、貯蔵庫31の内外に設置された電気部品は、自販機工業会自主基準(JVMA 2B001、附属書2「冷却ユニットの安全」)に示した要件を満足するように、防爆構造を有している。この防爆構造は、冷却加温システムから冷媒が漏洩した場合に電気部品が着火源とならないようにするものであり、漏洩した冷媒を拡散する構造や表面温度を低く抑える構造、火炎が外部に伝播しない簡易防爆構造などを含む。   Here, the electrical components installed inside and outside the storage 31 have an explosion-proof structure so as to satisfy the requirements shown in the Vending Machine Manufacturers Association voluntary standards (JVMA 2B001, Annex 2 “Cooling Unit Safety”). Yes. This explosion-proof structure prevents electrical components from becoming an ignition source when refrigerant leaks from the cooling and heating system. The structure that diffuses the leaked refrigerant, the structure that keeps the surface temperature low, and the flame to the outside Includes a simple explosion-proof structure that does not propagate.

以上のように構成された実施の形態1の自動販売機について、以下にその動作を説明する。   The operation of the vending machine of the first embodiment configured as described above will be described below.

貯蔵庫31内に配置された冷却加温システムの配管あるいは室内熱交換器44などが破損して可燃性冷媒が漏洩し、漏洩検知手段46が冷媒を検知すると吸入ファン40を運転させる。同時に外扉37の前面に設けられた商品選択ボタン(図示しない)を「売り切れ」状態を示す点灯表示を行い、利用者が自動販売機を利用できないようにする。   When the piping of the cooling and heating system arranged in the storage 31 or the indoor heat exchanger 44 is damaged and the combustible refrigerant leaks, and the leak detection means 46 detects the refrigerant, the suction fan 40 is operated. At the same time, a product selection button (not shown) provided on the front surface of the outer door 37 is lit to indicate a “sold out” state so that the user cannot use the vending machine.

また庫内ファン45は通常連続運転されており、冷媒が漏れたときも停止せずに運転している。圧縮機53は運転停止を行い、庫外ファン54は運転させて機械室52内の漏れ冷媒を外部へ排気するようにしている。   The internal fan 45 is normally continuously operated, and is operated without being stopped even when the refrigerant leaks. The compressor 53 is shut down, and the external fan 54 is operated to exhaust the refrigerant leaked in the machine room 52 to the outside.

そして吸入ファン40を運転すると、吸入ファン40から吐出する空気はその動圧によって開口部39の気密性を高めているシート状部材41を庫内側へ押して開放させ、開口部39を開放し外気を導入することができる。   When the suction fan 40 is operated, the air discharged from the suction fan 40 pushes and releases the sheet-like member 41 that enhances the airtightness of the opening 39 to the inside by the dynamic pressure, and opens the opening 39 to release the outside air. Can be introduced.

吸入ファン40から吐出される外部空気は、シート状部材41がガイド部材の役目となって下方に向かって流れることになる。具体的にはシート状部材41の下端部が前方の商品収納コラム32に当るか、当らないか程度しか開かない。   The external air discharged from the suction fan 40 flows downward with the sheet-like member 41 serving as a guide member. Specifically, the lower end of the sheet-like member 41 is opened only to the extent that it hits or does not hit the front product storage column 32.

このため商品収納コラム32内に収納される商品状態によって庫内に吐出される空気対流が一定しないということは生じにくく、シート状部材41によってガイドされるので、吸入ファン40の手前にある一番近い収納コラム32と内扉36との間を下方に向かって外部空気が流れる。   For this reason, it is unlikely that the air convection discharged into the warehouse is constant depending on the state of the product stored in the product storage column 32 and is guided by the sheet-like member 41. External air flows downward between the close storage column 32 and the inner door 36.

このため、庫内ファン45の運転によって商品搬出口42方向に吐出される漏洩冷媒が混じった空気は、内扉36の上方から下方に向かって流れる外部空気によって、貯蔵庫31内を上方に向かって拡散し庫内に滞留しようとする漏洩冷媒を、商品吸入ファン40と庫内ファン45との両方の運転により、商品搬出口42や庫内で発生した除霜水を排出する排水孔(図示しない)を通じて庫外へ放出するように導くことができ、また吸入ファン40の運転によって外部空気を庫内に送り込むことで庫内の空気を連続的に置換し漏洩した冷媒の濃度をすばやく低下させて安全性を高めることができる。   For this reason, the air mixed with the leaked refrigerant discharged in the direction of the product outlet 42 by the operation of the internal fan 45 is moved upward in the storage 31 by the external air flowing downward from the upper side of the inner door 36. Drainage holes (not shown) that discharge the leaked refrigerant that diffuses and stays in the warehouse by discharging both the product intake fan 40 and the interior fan 45 and the defrost water generated in the interior of the commodity outlet 42 and the warehouse. ), And the outside air is sent into the cabinet by operating the suction fan 40 to continuously replace the air in the cabinet and quickly reduce the concentration of the leaked refrigerant. Safety can be increased.

そして、商品搬出口42や排水孔(図示しない)から放出された冷媒は商品取出口38の底部に形成された孔部58を通って機械室52の前方に導かれ、連続運転している庫外ファン54によって、漏洩冷媒は室外熱交換器55の間を通り、庫外ファン54から吐出されて、機械室後方に形成された排気孔59から外部に排出される。   And the refrigerant | coolant discharged | emitted from the goods outlet 42 or a drain hole (not shown) is guide | induced to the front of the machine room 52 through the hole 58 formed in the bottom part of the goods outlet 38, and is the warehouse which is operating continuously. By the external fan 54, the leaked refrigerant passes between the outdoor heat exchangers 55, is discharged from the external fan 54, and is discharged to the outside through an exhaust hole 59 formed at the rear of the machine room.

これによって、貯蔵庫31内の冷媒濃度を速やかに可燃下限値以下となり爆発のリスクが軽減されるとともに、商品搬出口42から放出された冷媒を外気で希釈しながら安全に排出することができる。   As a result, the refrigerant concentration in the storage 31 quickly becomes lower than the flammable lower limit value, and the risk of explosion is reduced, and the refrigerant released from the product outlet 42 can be safely discharged while being diluted with outside air.

また、本実施の形態においては、貯蔵庫31外に配置された冷却加温システムの配管などが破損して冷媒が漏洩した場合に備えて、庫外ファン54を24時間連続運転して漏洩した冷媒を外気で希釈する構成としたが、漏洩検知手段46で検知した場合のみ庫外ファン54を運転してもよい。   Further, in the present embodiment, the refrigerant leaked by continuously operating the external fan 54 for 24 hours in preparation for a case where the refrigerant leaks due to damage to the piping of the cooling and heating system disposed outside the storage 31. However, the outside fan 54 may be operated only when it is detected by the leakage detection means 46.

また、本実施の形態においては、貯蔵庫31内の商品の温度分布を維持するために通常連続運転する庫内ファン45を冷媒漏洩時にも止めずに運転を継続したが、漏洩検知手段30で検知した場合に庫内ファン45を停止してもよい。庫内ファン45を停止した場合、貯蔵庫31の下方の空気が攪拌されないので、大気よりも重い冷媒であるイソブタン(比重2.09)やプロパン(比重1.56)は、貯蔵庫31の下方に滞留しやすいため、上部からの外気導入でより早く漏洩した冷媒を庫外へ排出することができる。   Further, in the present embodiment, in order to maintain the temperature distribution of the product in the storage 31, the internal fan 45 that is normally continuously operated continues to operate without stopping even when the refrigerant leaks, but is detected by the leakage detection means 30. In this case, the internal fan 45 may be stopped. When the internal fan 45 is stopped, the air below the storage 31 is not agitated, so that isobutane (specific gravity 2.09) and propane (specific gravity 1.56), which are heavier than the atmosphere, stay in the storage 31 below. Since it is easy to do, the refrigerant | coolant which leaked earlier by the external air introduction from the upper part can be discharged | emitted outside the store | warehouse | chamber.

また、本実施の形態においては、漏洩検知手段46を貯蔵室3の下部に配置したが、漏洩した冷媒は商品搬出口42から徐々に排出されるので、商品搬出口42の下方で外側である部分に漏洩検知手段46を配置しても同様の効果が期待できる。   Further, in the present embodiment, the leakage detection means 46 is arranged in the lower part of the storage chamber 3, but the leaked refrigerant is gradually discharged from the product carry-out port 42, so that it is outside below the product carry-out port 42. The same effect can be expected even if the leak detection means 46 is arranged in the portion.

また、本実施の形態においては、ヒータ43を用いて貯蔵庫31を加温する構成としたが、貯蔵庫31内に加温時に冷媒を循環させる放熱器を配置して放熱器の放熱作用で貯蔵庫31を加温する構成(ヒートポンプ方式)としても、放熱器から漏洩した冷媒を安全に外部に排出する同様の効果が期待できる。   Moreover, in this Embodiment, it was set as the structure which heats the storage 31 using the heater 43, However, The radiator 31 which arrange | positions the radiator which circulates a refrigerant | coolant at the time of heating in the storage 31 is arranged by the heat dissipation effect | action of a radiator. Even if it is the structure which heats (heat pump system), the same effect which discharges | emits the refrigerant | coolant leaked from the heat radiator safely outside can be anticipated.

以上のように、本発明にかかる自動販売機は、庫内上部に吸入ファンを備えることにより安全に貯蔵庫内の冷媒濃度を速やかに低下させることができるので、可燃性冷媒を使用したショーケースや業務用冷凍冷蔵庫などの冷蔵あるいは冷凍機器においても、安全に貯蔵庫内の冷媒濃度を速やかに低下させる場合にも適用できる。   As described above, the vending machine according to the present invention can quickly reduce the refrigerant concentration in the storage by providing the suction fan in the upper part of the warehouse, so a showcase using a flammable refrigerant or Even in refrigeration or refrigeration equipment such as commercial refrigerator-freezers, the present invention can be applied to a case where the refrigerant concentration in the storage is rapidly reduced.

本発明の実施の形態1における自動販売機の縦断面図1 is a longitudinal sectional view of a vending machine according to Embodiment 1 of the present invention. 本発明の実施の形態1における自動販売機の要部を示す縦断面図The longitudinal cross-sectional view which shows the principal part of the vending machine in Embodiment 1 of this invention 従来の自動販売機の縦断面図Vertical section of a conventional vending machine

符号の説明Explanation of symbols

30 自動販売機本体
31 貯蔵庫
36 内扉
40 吸入ファン
41 シート状部材
42 商品搬出口
44 室内熱交換器
46 漏洩検知手段
DESCRIPTION OF SYMBOLS 30 Vending machine main body 31 Storage 36 Inner door 40 Suction fan 41 Sheet-like member 42 Product delivery outlet 44 Indoor heat exchanger 46 Leak detection means

Claims (4)

自動販売機本体内に商品を貯蔵する貯蔵庫と、前記貯蔵庫内の下方に前記貯蔵庫を冷却する冷却システムの室内熱交換器と前記室内熱交換器に接続される接続配管と、前記貯蔵庫の前面開口部を開閉可能に形成した内扉とを備えた自動販売機において、前記内扉は前記貯蔵庫外の空気を前記貯蔵庫内に吸入する吸入ファンを内蔵する開口部と、前記吸入ファンの前記貯蔵庫内側に前記吸入ファンが停止している時は自重で前記開口部を遮断し前記吸入ファンが運転されると前記吸入ファンの吐出空気の動圧によって前記開口部を開放する部材とを備え、前記吸入ファンは前記室内熱交換器より上部に配置し、前記室内熱交換器または前記接続配管から冷媒が漏れたことを検知する漏洩検知手段が漏洩冷媒を検知した時、前記吸入ファンを運転して前記貯蔵庫内へ空気を吐出し前記貯蔵庫外へ前記漏洩冷媒を排気することを特徴とする自動販売機。 A storage for storing products in the main body of the vending machine, an indoor heat exchanger for a cooling system for cooling the storage in the storage, a connection pipe connected to the indoor heat exchanger, and a front opening of the storage in a vending machine and a door inner part and an openable form, the inner door includes an opening having a built-in suction fan for sucking the reservoir outside air into said reservoir, said reservoir of said suction fan A member that shuts off the opening by its own weight when the suction fan is stopped inside and opens the opening by dynamic pressure of the discharge air of the suction fan when the suction fan is operated , The suction fan is disposed above the indoor heat exchanger, and when the leak detection means for detecting that the refrigerant has leaked from the indoor heat exchanger or the connection pipe detects the leaked refrigerant, the suction fan is operated. Vending machine, characterized by exhausting the leaked refrigerant to the storage compartment outer ejecting air into said reservoir to. 内扉の下方に商品を搬出する商品搬出口、室内熱交換器の下部に前記室内熱交換器で発生した除霜水を排出する排水孔を備えた自動販売機において、漏洩冷媒は前記商品搬出口または前記排水孔を通って貯蔵庫外へ排気されることを特徴とする請求項1に記載の自動販売機。 In a vending machine having a product outlet for discharging the product below the inner door and a drain hole for discharging the defrost water generated in the indoor heat exchanger at the lower part of the indoor heat exchanger, the leakage refrigerant is vending machine according to claim 1, characterized in that it is exhausted into the storage chamber out through the outlet or the drainage hole. 吸入ファンの吐出空気の動圧によって開口部を開放する部材にシート状部材を用いたことを特徴とする請求項1または2に記載の自動販売機。 The vending machine according to claim 1 or 2, wherein a sheet-like member is used as a member that opens the opening by the dynamic pressure of the air discharged from the suction fan . 冷媒を可燃性冷媒としたことを特徴とする請求項1から3のいずれか一項に記載の自動販売機。   The vending machine according to any one of claims 1 to 3, wherein the refrigerant is a combustible refrigerant.
JP2007232347A 2007-09-07 2007-09-07 vending machine Expired - Fee Related JP5092634B2 (en)

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JP5726009B2 (en) * 2011-07-28 2015-05-27 ホシザキ電機株式会社 Ice machine
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JP6769021B2 (en) * 2015-09-30 2020-10-14 ダイキン工業株式会社 Refrigeration equipment
CN110736183B (en) * 2018-07-18 2021-04-27 奥克斯空调股份有限公司 Air conditioner refrigerant leakage detection method and device
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