JP2010182224A

JP2010182224A - Vending machine

Info

Publication number: JP2010182224A
Application number: JP2009027056A
Authority: JP
Inventors: Koji Takiguchi; 浩司滝口; Hisanori Ishita; 尚紀井下; Takeshi Tsuruha; 鶴羽　　健; Kaoru Kura; 馨倉; Masaki Fujinami; 正樹藤波; Makoto Ishida; 真石田
Original assignee: Fuji Electric Retail Systems Co Ltd
Current assignee: Fuji Electric Retail Systems Co Ltd
Priority date: 2009-02-09
Filing date: 2009-02-09
Publication date: 2010-08-19
Anticipated expiration: 2029-02-09
Also published as: JP5228965B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vending machine in which a refrigerant circuit can be inexpensively constituted by shortening total piping length of a refrigerant circuit. <P>SOLUTION: The vending machine has a cooling circulation circuit composed of a compressor, a condenser solenoid valve, a condenser, an expansion means, a distributor, a cooler inlet solenoid valve, an internal heat exchanger, a cooler outlet solenoid valve and a confluence unit. In the cooling circulation circuit, piping connection is made from the compressor to an inlet side connection point located between the internal heat exchanger inlet side and the cooler inlet solenoid valve through a heater solenoid valve, and piping connection is made from an outlet side connection point located between the internal heat exchanger outlet side and the cooler outlet solenoid valve to the distributor through a second expansion means to constitute a heating-cooling circulation circuit carrying out heat pump operation by allowing the internal heat exchanger to act as a condenser. The inlet side connection point and the outlet side connection point are disposed on the outside of a merchandise storage chamber to shorten the total piping length of the refrigerant circuit. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、缶、ビン、パック、ペットボトル等の容器に入れた飲料等の商品を冷媒回路にて冷却または加熱して販売に供する自動販売機に関する。 The present invention relates to a vending machine that sells a product such as a beverage in a container such as a can, a bottle, a pack, or a plastic bottle after being cooled or heated in a refrigerant circuit.

近年の地球温暖化に対して二酸化炭素の排出量削減が課題となっており、自動販売機も省エネ型が開発されている。その１方式として従来は排熱していた凝縮器の熱を庫内の加熱に利用するヒートポンプ方式の自動販売機が開発されている（例えば、特許文献１参照）。 Reducing carbon dioxide emissions has become a challenge with recent global warming, and energy-saving vending machines have been developed. As one of the methods, a heat pump type vending machine that uses the heat of the condenser, which has been exhausted in the past, for heating in the cabinet has been developed (for example, see Patent Document 1).

特許文献１に開示された自動販売機の冷却／加熱ユニットは、図７で示すように庫室Ａ，Ｂ，Ｃ内にそれぞれ内部熱交換器３ｚ、４ｚ、５ｚ、ファン１２ｚ、１３ｚ、１４ｚおよび温度センサ１８Ａｚ，１８Ｂｚ，１９Ａｚ，１９Ｂｚ、２０Ａｚ，２０Ｂｚが配設され、庫外に圧縮機１ｚ、外部熱交換器２ｚ、ファン１１ｚ、気液分離器１０ｚが配設され、それらの機器が次の３つの配管系統にて接続されている。第1の配管系統は、圧縮機１ｚから高温高圧の冷媒を送る配管系統であり、庫外側に圧縮機１ｚから送出する配管と、電磁弁１５Ａｚを介して外部熱交換器２ｚと接続する配管が配設され、庫内側にそれぞれ電磁弁１６Ａｚ、１７Ａｚを介して内部熱交換器４ｚ、５ｚと接続する配管が配設され、これら配管が並列接続されている。第２の配管系統は、蒸発された低温低圧の冷媒を圧縮機１ｚへ戻す配管系統であり、庫外側に圧縮機１ｚへ気液分離器１０ｚを介して戻る配管と、電磁弁１５Ｂｚを介して外部熱交換器２ｚと接続する配管が配設され、庫内側では内部熱交換器と接続する配管とそれぞれ電磁弁１６Ｂｚ、１７Ｂｚを介して内部熱交換器４ｚ、５ｚと接続する配管が配設され、これら配管が並列接続されている。第３の配管系統は、凝縮した冷媒を膨張させた後に蒸発させるために冷媒を送る配管系統であり、庫外側に外部熱交換器２ｚより電動膨張弁６ｚを介して冷媒を送出する配管が配設され、庫内側ではそれぞれ電動膨張弁７ｚ、８ｚ、９ｚを介して内部熱交換器３ｚ、４ｚ、５ｚと接続する配管が配設され、これら配管が並列接続されている。 As shown in FIG. 7, the cooling / heating unit of the vending machine disclosed in Patent Document 1 includes internal heat exchangers 3z, 4z, 5z, fans 12z, 13z, 14z and Temperature sensors 18Az, 18Bz, 19Az, 19Bz, 20Az, and 20Bz are disposed, and a compressor 1z, an external heat exchanger 2z, a fan 11z, and a gas-liquid separator 10z are disposed outside the cabinet. It is connected by three piping systems. The first piping system is a piping system that sends a high-temperature and high-pressure refrigerant from the compressor 1z. The piping that is sent from the compressor 1z to the outside of the warehouse and the piping that is connected to the external heat exchanger 2z through the electromagnetic valve 15Az. Arranged and pipes connected to the internal heat exchangers 4z and 5z via the electromagnetic valves 16Az and 17Az, respectively, are arranged inside, and these pipes are connected in parallel. The second piping system is a piping system that returns the evaporated low-temperature and low-pressure refrigerant to the compressor 1z. The piping returns to the compressor 1z via the gas-liquid separator 10z and the solenoid valve 15Bz. Piping for connecting to the external heat exchanger 2z is arranged, and piping for connecting to the internal heat exchanger and piping for connecting to the internal heat exchangers 4z and 5z via the solenoid valves 16Bz and 17Bz are arranged inside the warehouse. These pipes are connected in parallel. The third piping system is a piping system that sends the refrigerant to evaporate after condensing the condensed refrigerant, and a piping for sending the refrigerant from the external heat exchanger 2z through the electric expansion valve 6z to the outside of the warehouse. In the inside of the warehouse, pipes connected to the internal heat exchangers 3z, 4z, and 5z are arranged via the electric expansion valves 7z, 8z, and 9z, and these pipes are connected in parallel.

かかる構成で例えば庫室Ａ、Ｂを冷却し庫室Ｃをヒートポンプ加熱する運転モードでは、電磁弁１５Ａｚ、１６Ｂｚ、１７Ａｚを開成し、電磁弁１５Ｂｚ、１６Ａｚ、１７Ｂｚを閉止し、電動膨張弁６ｚ、９ｚを全開し、電動膨張弁７ｚ、８ｚを庫室Ａ、Ｂの温度に応じて開度を調整する。圧縮機１ｚより圧縮した冷媒は、電磁弁１５Ａｚを介して外部熱交換器２ｚに送られるともに、並列して電磁弁１７Ａｚを介して内部熱交換器５ｚに送られて凝縮して庫室Ｃを加熱する。外部熱交換器２ｚ、内部熱交換器５ｚから凝縮した冷媒は、電動膨張弁７ｚ、８ｚで断熱膨張されて気液の二相流となり、内部熱交換器３ｚ、４ｚで蒸発して庫室Ａ，Ｂを冷却し、気液分離器１０ｚを経由して圧縮機１に戻る。 In such an operation mode, for example, in the operation mode in which the chambers A and B are cooled and the chamber C is heated by heat pump, the electromagnetic valves 15Az, 16Bz, and 17Az are opened, the electromagnetic valves 15Bz, 16Az, and 17Bz are closed, and the electric expansion valve 6z, 9z is fully opened, and the opening degree of the electric expansion valves 7z and 8z is adjusted according to the temperatures of the compartments A and B. The refrigerant compressed by the compressor 1z is sent to the external heat exchanger 2z via the electromagnetic valve 15Az, and is sent in parallel to the internal heat exchanger 5z via the electromagnetic valve 17Az to condense and store the storage room C. Heat. The refrigerant condensed from the external heat exchanger 2z and the internal heat exchanger 5z is adiabatically expanded by the electric expansion valves 7z and 8z to become a two-phase flow of gas and liquid, and is evaporated by the internal heat exchangers 3z and 4z. , B are cooled and returned to the compressor 1 via the gas-liquid separator 10z.

特開２００２−２６７３１４号公報JP 2002-267314 A

しかしながら、通常の自動販売機は、庫内と庫外とを底板を境として庫内熱交換器が庫内の後部に配置され、冷却／加熱ユニットを庫内の前面側から脱着するように設計されていることから、圧縮機、気液分離器などの庫外に設置された機器から庫内に設置された庫内熱交換器へ接続する配管は底板の前面側を跨いで配管されている。底板の前面から庫内熱交換器までの距離は自動販売機の奥行き寸法と略同一になることから、特許文献１に記載の自動販売機では、冷却加熱兼用の庫室Ｂ，Ｃでは、３系統の配管が配設されているので、総配管長が長くなり、コストアップとなるという問題がある。 However, ordinary vending machines are designed so that the heat exchanger inside the warehouse is located at the rear of the inside and outside of the warehouse, and the cooling / heating unit is removed from the front side of the inside. Therefore, the pipes connecting from the equipment installed outside the compressor, gas-liquid separator, etc. to the inside heat exchanger installed inside the warehouse are routed across the front side of the bottom plate . Since the distance from the front surface of the bottom plate to the internal heat exchanger is substantially the same as the depth dimension of the vending machine, the vending machine described in Patent Document 1 has 3 for the cooling and heating storage rooms B and C. Since the piping of the system is arranged, there is a problem that the total piping length becomes long and the cost increases.

本発明は、上記実情に鑑みて、上記の課題を解決して、冷媒回路の総配管長を短くして、低コストで冷媒回路が構成できる自動販売機を提供することを目的とする。 In view of the above circumstances, an object of the present invention is to provide an automatic vending machine capable of solving the above-described problems and shortening the total piping length of the refrigerant circuit and configuring the refrigerant circuit at low cost.

上記の目的を達成するために、本発明の請求項１に係る自動販売機は、冷却加熱兼用の商品収納庫を有し、冷却加熱の運転モードにより選択的に商品収納庫を冷却もしくは加熱する自動販売機であって、冷媒を圧縮する圧縮機と、庫外に設け凝縮器電磁弁を介して冷媒を凝縮する凝縮器と、冷媒を膨張させる膨張手段と、膨張手段より膨張した冷媒を分配する分配器と、庫内に設け前記分配器より冷却器入口電磁弁を介して冷媒を蒸発する複数の庫内熱交換器と、蒸発した冷媒を冷却器出口電磁弁を介して合流する合流器と、にて冷却循環回路を構成するとともに、前記冷却循環回路に、前記圧縮機から加熱器電磁弁を介して前記庫内熱交換器入口側と前記冷却器入口電磁弁の間に位置する入口側接続点に配管接続し、かつ、前記庫内熱交換器出口側と前記冷却器出口電磁弁の間に位置する出口側接続点から第２膨張手段を介して前記分配器に配管接続することにより、前記庫内熱交換器を凝縮器として作用させてヒートポンプ運転を行う加熱冷却循環回路を構成する自動販売機において、前記入口側接続点および前記出口側接続点が商品収納庫の外側に配設されていることを特徴とする。 In order to achieve the above object, a vending machine according to claim 1 of the present invention has a product storage that is also used for cooling and heating, and selectively cools or heats the product storage according to the cooling heating operation mode. A vending machine that compresses refrigerant, a condenser that is provided outside the refrigerator and that condenses refrigerant via a condenser solenoid valve, expansion means that expands the refrigerant, and refrigerant that is expanded by the expansion means is distributed Distributor, a plurality of in-compartment heat exchangers that evaporate refrigerant from the distributor through a cooler inlet solenoid valve, and a merger that joins the evaporated refrigerant through a cooler outlet solenoid valve And an inlet located between the compressor heat exchanger inlet side and the cooler inlet solenoid valve via the heater solenoid valve from the compressor. Pipe connection to the side connection point, and heat exchange in the cabinet By connecting a pipe from the outlet side connection point located between the outlet side and the cooler outlet solenoid valve to the distributor via the second expansion means, the internal heat exchanger acts as a condenser, and the heat pump In the vending machine constituting the heating / cooling circulation circuit for operation, the inlet side connection point and the outlet side connection point are arranged outside the commodity storage.

本発明に係る請求項１の自動販売機は、冷却循環回路に、圧縮機から加熱器電磁弁を介して庫内熱交換器入口側と冷却器入口電磁弁の間に位置する入口側接続点に配管接続し、かつ、庫内熱交換器出口側と冷却器出口電磁弁の間に位置する出口側接続点から第２膨張手段を介して分配器に配管接続することにより、前記庫内熱交換器を凝縮器として作用させてヒートポンプ運転を行う加熱冷却循環回路を構成する自動販売機において、前記入口側接続点および前記出口側接続点が商品収納庫の外側に配設されていることにより、庫内側に配設する管路を少なくできるので、冷媒回路の総配管長が短くなる結果、低コストで冷媒回路を構成できる。 The vending machine according to claim 1 of the present invention is provided with an inlet side connection point located between the compressor heat exchanger inlet side and the cooler inlet solenoid valve via the heater solenoid valve from the compressor to the cooling circuit. And connecting the pipe to the distributor through the second expansion means from the outlet side connection point located between the outlet side of the internal heat exchanger and the solenoid valve of the cooler outlet. In the vending machine constituting the heating / cooling circulation circuit that operates the heat pump by operating the exchanger as a condenser, the inlet side connection point and the outlet side connection point are disposed outside the commodity storage. Since the number of pipelines arranged inside the storage can be reduced, the total piping length of the refrigerant circuit is shortened, and as a result, the refrigerant circuit can be configured at low cost.

本発明の実施例に係る自動販売機を示す斜視図である。1 is a perspective view showing a vending machine according to an embodiment of the present invention. 図１に示した自動販売機の断面図である。It is sectional drawing of the vending machine shown in FIG. 本発明の実施例に係る冷媒回路図である。It is a refrigerant circuit figure concerning the example of the present invention. 制御装置のブロック図である。It is a block diagram of a control apparatus. ３室を全て冷却する冷却単独運転における冷媒の流れを示す回路図である。It is a circuit diagram which shows the flow of the refrigerant | coolant in the cooling single operation which cools all the three chambers. １室を冷却し、２室を加熱するヒートポンプ運転における冷媒の流れを示す回路図である。It is a circuit diagram which shows the flow of the refrigerant | coolant in the heat pump driving | operation which cools 1 chamber and heats 2 chambers. 従来例に係る冷媒回路図である。It is a refrigerant circuit figure concerning a conventional example.

以下に添付図面を参照して、本発明に係る自動販売機の好適な実施例を詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。 Exemplary embodiments of a vending machine according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

まず、本発明の実施例に係る自動販売機について説明する。なお、図１は本発明の実施例に係る自動販売機を示す斜視図、図２は図１に示した自動販売機の断面図であり、図３は冷媒回路図である。図４は制御装置のブロック図を示し、図５は３室を全て冷却する冷却運転における冷媒の流れを示す回路図であり、図６は１室を冷却し、２室を加熱するヒートポンプ運転における冷媒の流れを示す回路図である。 First, a vending machine according to an embodiment of the present invention will be described. 1 is a perspective view showing a vending machine according to an embodiment of the present invention, FIG. 2 is a sectional view of the vending machine shown in FIG. 1, and FIG. 3 is a refrigerant circuit diagram. FIG. 4 is a block diagram of the control device, FIG. 5 is a circuit diagram showing the flow of refrigerant in the cooling operation for cooling all three chambers, and FIG. 6 is in the heat pump operation for cooling one chamber and heating two chambers. It is a circuit diagram which shows the flow of a refrigerant | coolant.

これら図において、自動販売機は、前面が開口した直方状の断熱体として形成された本体キャビネット１０と、その前面に設けられた外扉２０および内扉３０と、本体キャビネット１０の内部を上下２段に底板１１にて区画形成し、上部を例えば２つの断熱仕切板４０ｗによって仕切られた３つの独立した商品収納庫４０ａ、４０ｂ、４０ｃと、下部に商品収納庫４０ａ、４０ｂ、４０ｃを冷却もしくは加熱する冷却／加熱ユニット６０を収納する機械室５０と、外扉２０の内側に配設され、商品収納庫４０ａ、４０ｂ、４０ｃ内の温度センサＴａ、Ｔｂ、Ｔｃにより自動販売機の冷却、加熱運転などを制御する制御手段９０と、を有して構成されている。 In these drawings, the vending machine includes a main body cabinet 10 formed as a rectangular heat insulator having an open front surface, an outer door 20 and an inner door 30 provided on the front surface, and an interior of the main body cabinet 10 in two directions. The bottom plate 11 is partitioned and formed at the stage, and the upper part is cooled by, for example, three independent product storage units 40a, 40b, and 40c separated by two heat insulating partition plates 40w, and the lower part product storage units 40a, 40b, and 40c are cooled or Cooling / heating of the vending machine by the temperature sensor Ta, Tb, Tc disposed inside the machine room 50 for storing the cooling / heating unit 60 for heating and the outer door 20 and in the product storages 40a, 40b, 40c. And control means 90 for controlling operation and the like.

より詳細に説明すると、外扉２０は、本体キャビネット１０の前面開口を開閉するためのものであり、図には明示していないが、この外扉２０の前面には、販売する商品の見本を展示する商品展示室、販売する商品を選択するための選択ボタン、貨幣を投入するための貨幣投入口、払い出された商品を取り出すための商品取出口２１等々、商品の販売に必要となる構成が配置してある。 More specifically, the outer door 20 is used to open and close the front opening of the main body cabinet 10 and is not shown in the figure. Product display room, selection button for selecting the product to be sold, money slot for inserting money, product outlet 21 for taking out the paid-out product, etc. Is arranged.

内扉３０は、商品収納庫４０ａ、４０ｂ、４０ｃの前面を開閉し、内部の商品を保温するものであり、上下２段に分割され内部に断熱体を有する箱型形状の構造体である。上側の内扉３０ａは、一端を外扉２０に枢軸し、他端を外扉２０に係着して、外扉２０の開放と同時に上側の内扉３０ａを開放させて、商品の補充を容易にするものである。下側の内扉３０ｂは、一端を本体キャビネット１０に枢軸し、他端を本体キャビネット１０に不図示の掛金にて掛着して、外扉２０を開放したときには、閉止した状態であり、商品収納庫４０ａ、４０ｂ、４０ｃ内の冷気もしくは暖気が流出することを防ぎ、メンテナンス時など必要に応じて開放できるものである。 The inner door 30 opens and closes the front surfaces of the product storage units 40a, 40b, and 40c to keep the products in the interior warm. The inner door 30 is a box-shaped structure that is divided into upper and lower stages and has a heat insulator inside. The upper inner door 30a is pivoted at one end to the outer door 20, and the other end is engaged with the outer door 20, and the upper inner door 30a is opened at the same time as the outer door 20 is opened to facilitate replenishment of goods. It is to make. The lower inner door 30b is in a closed state when one end pivots on the main body cabinet 10 and the other end is hooked on the main body cabinet 10 with a latch (not shown) and the outer door 20 is opened. It is possible to prevent the cool air or warm air in the storage cases 40a, 40b, and 40c from flowing out, and to open as necessary during maintenance.

商品収納庫４０ａ、４０ｂ、４０ｃは、缶入り飲料やペットボトル入り飲料等の商品を所望の温度に維持した状態で収容するためのものであり、その収納庫の容量は商品収納庫４０ａ、４０ｃ、４０ｂの順番に大きな態様で配分されている。本実施例は、商品収納庫４０ａを冷却専用とし、商品収納庫４０ｂ、４０ｃを冷却加熱兼用としている。その商品収納庫４０ａ、４０ｂ、４０ｃには、それぞれ、商品を上下方向に沿って並ぶ態様で収納し、販売信号により1個ずつ商品を排出するための商品搬出機構を備えた商品収納ラックＲ、排出された商品Ｓを内扉３０ｂに取設された搬出扉３１を介して外扉の販売口２１へ搬出する商品搬出シュート４２を有している。 The product storage units 40a, 40b, and 40c are for storing products such as canned beverages and beverages containing plastic bottles at a desired temperature, and the capacity of the storage units is the product storage units 40a, 40c. , 40b in a large manner. In this embodiment, the product storage 40a is exclusively used for cooling, and the product storages 40b and 40c are also used for cooling and heating. The product storage racks 40a, 40b, and 40c store the products in a manner that they are arranged in the vertical direction, and are provided with a product storage rack R that includes a product delivery mechanism for discharging the products one by one in response to a sales signal. There is a product carry-out chute 42 for carrying the discharged product S to the sales port 21 of the outer door through a carry-out door 31 installed in the inner door 30b.

冷却／加熱ユニット６０は、機械室５０内に圧縮機６１、凝縮器６２、膨張器（膨張手段）６３、第２の膨張器７９、アキュムレータ６９、補助熱交換器７６を取設し、底板１１を跨いで庫内に庫内熱交換器６５ａ、６５ｂ、６５ｃを有して各機器を冷媒配管で接続されることにより構成されている。なお、底板１１の前端部には、商品収納庫４０ａ，４０ｂ，４０ｃに対応して冷媒配管を挿入するために凹部形状の庫内配管入口部８２ａ、８２ｂ、８２ｃ、庫内配管出口部８３ａ、８３ｂ、８３ｃが形成されている。冷却／加熱ユニット６０は、冷却加熱の運転モードに応じて、庫内に冷風または温風を循環させて商品収納ラックＲ内の商品Ｓを冷却または加熱するものである。 The cooling / heating unit 60 includes a compressor 61, a condenser 62, an expander (expansion means) 63, a second expander 79, an accumulator 69, and an auxiliary heat exchanger 76 in the machine room 50. The internal heat exchangers 65a, 65b, and 65c are provided in the storage across the space, and each device is connected by a refrigerant pipe. In addition, in the front end portion of the bottom plate 11, in order to insert refrigerant pipes corresponding to the product storage boxes 40a, 40b, 40c, recessed pipe inlet portions 82a, 82b, 82c, an inner pipe outlet portion 83a, 83b and 83c are formed. The cooling / heating unit 60 cools or heats the product S in the product storage rack R by circulating cold air or warm air in the cabinet according to the cooling / heating operation mode.

冷却加熱用の圧縮機６１は、冷媒を圧縮して回路内を循環させるためのもので、冷却運転時には、蒸発温度が約−１０℃、凝縮温度が約４０℃で使用され、加熱運転時には、蒸発温度が約−１０℃、凝縮温度が約７０℃で使用される。 The compressor 61 for cooling and heating is for compressing the refrigerant and circulating it in the circuit. During the cooling operation, the evaporation temperature is about −10 ° C., the condensation temperature is about 40 ° C., and during the heating operation, An evaporation temperature of about −10 ° C. and a condensation temperature of about 70 ° C. are used.

凝縮器６２は、フィンチューブ型の熱交換器であり、冷却運転時に不要な凝縮熱を排出するためのものである。凝縮器６２の後部にはファン６２ｆが取設され、ファン６２ｆは機械室５０の前面開口部より空気を吸入し、凝縮器６２による凝縮熱を吸入するとともに、圧縮機６１の排熱を吸収して、機械室５０の背面開口部へ排気するためのものである。 The condenser 62 is a fin tube type heat exchanger, and discharges unnecessary condensation heat during the cooling operation. A fan 62f is installed at the rear of the condenser 62. The fan 62f sucks air from the front opening of the machine chamber 50, sucks heat of condensation by the condenser 62, and absorbs exhaust heat of the compressor 61. Thus, the air is exhausted to the rear opening of the machine room 50.

膨張器６３は、冷却運転時に通過する冷媒を減圧して断熱膨張させるものであり、たとえばキャピラリ、温度膨張弁、電子膨張弁である。 The expander 63 decompresses the refrigerant passing during the cooling operation and adiabatically expands, and is, for example, a capillary, a temperature expansion valve, or an electronic expansion valve.

分流器６４は、膨張器６３で断熱膨張させられた冷媒を庫内熱交換器６５ａ、６５ｂ、６５ｃに分配するためのものである。 The flow divider 64 is for distributing the refrigerant adiabatically expanded by the expander 63 to the internal heat exchangers 65a, 65b, 65c.

庫内熱交換器６５ａ、６５ｂ、６５ｃは、商品収納庫４０ａを冷却するためのものであり、庫内熱交換器６５ｂ、６５ｃは、商品収納庫４０ｂ、４０ｃを加熱する庫内熱交換器を兼用している。また、庫内熱交換器６５ａ、６５ｂ、６５ｃは、各商品収納庫の下部に取設され、風胴８７で囲繞され、その後方にファン６５ｆが取設され、その後方にダクト６７ｄが取設されている。商品収納庫内の冷却と加熱は、庫内熱交換器６５ａ、６５ｂ、６５ｃにより冷却もしくは加熱された空気を商品収納庫内の商品Ｓに送風し、図２中の矢印で示すようにダクト６７ｄより循環回収することで行われる。 The internal heat exchangers 65a, 65b, 65c are for cooling the product storage 40a, and the internal heat exchangers 65b, 65c are internal heat exchangers for heating the product storage 40b, 40c. I also use it. The internal heat exchangers 65a, 65b, 65c are installed at the lower part of each product storage, surrounded by a wind tunnel 87, a fan 65f is installed behind them, and a duct 67d is installed behind them. Has been. The cooling and heating in the product storage are performed by blowing the air cooled or heated by the internal heat exchangers 65a, 65b, 65c to the product S in the product storage, and the duct 67d as shown by the arrow in FIG. It is done by more circulating recovery.

アキュムレータ６９は、庫内熱交換器６５ａ、６５ｂ、６５ｃから蒸発された冷媒を流入し、気液分離させて液冷媒を貯留し、気相冷媒を圧縮機６１に戻すための密閉した容器である。また、アキュムレータ６９は、回路の冷媒循環に余った冷媒を貯留するための容器でもある。 The accumulator 69 is a sealed container for flowing in the refrigerant evaporated from the internal heat exchangers 65a, 65b, 65c, separating the gas and liquid, storing the liquid refrigerant, and returning the gas-phase refrigerant to the compressor 61. . The accumulator 69 is also a container for storing the refrigerant remaining in the refrigerant circulation of the circuit.

補助熱交換器７６は、フィンチューブ型の熱交換器であり、加熱運転時に不要な凝縮熱を排出するためのものである。 The auxiliary heat exchanger 76 is a fin tube type heat exchanger, and discharges unnecessary condensation heat during heating operation.

膨張器７９は、加熱運転時に通過する冷媒を減圧して断熱膨張させるものであり、たとえばキャピラリ、温度膨張弁、電子膨張弁である。 The expander 79 decompresses the refrigerant passing during the heating operation and adiabatically expands, and is, for example, a capillary, a temperature expansion valve, or an electronic expansion valve.

ヒータ６６ｂ、６６ｃは庫内熱交換器６５ｂ、６５ｃの前方に取設され、商品収納庫４０ｂ、４０ｃの加熱の補助を行うものである。 The heaters 66b and 66c are installed in front of the internal heat exchangers 65b and 65c, and assist heating of the product storages 40b and 40c.

庫内温センサＴａ、Ｔｂ、Ｔｃは、商品収納庫４０ａ、４０ｂ、４０ｃ内の風胴６７の上面に取設され、商品収納庫４０ａ、４０ｂ、４０ｃの庫内温度を検知するためのものである。 The inside temperature sensors Ta, Tb, Tc are installed on the upper surface of the wind tunnel 67 in the product storage 40a, 40b, 40c, and are used to detect the inside temperature of the product storage 40a, 40b, 40c. is there.

凝縮器電磁弁６８は、圧縮機６１と凝縮器６２間の冷媒通路を開閉するものであり、加熱器電磁弁６８ｂ、６８ｃは、圧縮機６１と庫内熱交換器６５ｂ、６５ｃ間の圧縮された冷媒の通路を開閉するものである。冷却器入口電磁弁７０ａ，７０ｂ，７０ｃは分流器６４と庫内熱交換器６５ａ、６５ｂ、６５ｃ間の膨張された冷媒の通路を開閉するものであり、冷却器出口電磁弁７２ｂ，７２ｃは、庫内熱交換器６５ｂ、６５ｃと圧縮機６１と間の蒸発された冷媒の通路を開閉するものである。 The condenser solenoid valve 68 opens and closes the refrigerant passage between the compressor 61 and the condenser 62, and the heater solenoid valves 68b and 68c are compressed between the compressor 61 and the internal heat exchangers 65b and 65c. It opens and closes the refrigerant passage. The cooler inlet solenoid valves 70a, 70b, 70c open and close the expanded refrigerant passage between the flow divider 64 and the internal heat exchangers 65a, 65b, 65c. The cooler outlet solenoid valves 72b, 72c It opens and closes the passage of the evaporated refrigerant between the internal heat exchangers 65b and 65c and the compressor 61.

冷却／加熱ユニット６０の冷媒回路構成について図２，３を用いて詳述する。冷媒回路構成は、庫内を冷却のみを行う冷却循環回路６０Ａと庫内の冷却加熱を同時に行う（ヒートポンプ運転を行う）加熱冷却循環回路６０Ｂを有している。なお、図中の点線の囲いは、商品収納庫４０ａ、４０ｂ、４０ｃを模式的に示している。 The refrigerant circuit configuration of the cooling / heating unit 60 will be described in detail with reference to FIGS. The refrigerant circuit configuration includes a cooling circuit 60A that only cools the inside of the cabinet and a heating / cooling circuit 60B that simultaneously performs cooling and heating inside the cabinet (performs a heat pump operation). In addition, the enclosure of the dotted line in the figure has shown typically goods storage 40a, 40b, 40c.

冷却循環回路６０Ａは、圧縮機６１から凝縮器６２、膨張器６３を経由して分流器６４に接続し、分流器６４から庫内熱交換器６５ａ、６５ｂ、６５ｃに分流したのち集合器６７にて集合し、アキュムレータ６９を経由して圧縮機６１に戻る回路である。具体的には、冷却循環回路６０Ａの管路は、圧縮機６１から凝縮器電磁弁６８、凝縮器６２、膨張器６３、接続点８６を経由して分流器６４に接続する管路と、分流器６４より３方に分流して冷却器入口電磁弁７０ａ、７０ｂ、７０ｃに至る管路と、冷却器入口電磁弁７０ａから庫内配管入口部８２ａを跨いで庫内熱交換器６５ａに至る送り管路１８２ａと、庫内熱交換器６５ａから庫内配管出口部８３ａを跨いで機械室５０内に配設された集合部６７に接続する戻り管路１８３ａと、冷却器入口電磁弁７０ｂ、７０ｃからそれぞれ逆止弁７１ｂ、７１ｃを介して入口側接続点８１ｂ、８１ｃに接続される管路１８１ｂ、１８１ｃと、入口側接続点８１ｂ、８１ｃからそれぞれ庫内配管入口部８２ｂ、８２ｃを跨いで庫内熱交換器６５ｂ、６５ｃに至る送り管路１８２ｂ、１８２ｃと、庫内熱交換器６５ｂ、６５ｃからそれぞれ庫内配管出口部８３ｂ、８３ｃを跨いで機械室５０内に配設された出口側接続点８４ｂ、８４ｃに接続する戻り管路１８３ｂ、１８３ｃと、出口側接続点８４ｂ、８４ｃからそれぞれ冷却器出口電磁弁７２ｂ、７２ｃを介して集合部６７に集合する管路１８４ｂ、１８４ｃと、集合部６７からアキュムレータ６９を経由して圧縮機６１に戻る管路により構成されている。なお、商品収納庫４０ａ、４０ｂ、４０ｃ内に配設される管路は、送り管路１８２ａ、１８２ｂ、１８２ｃのうちで庫内配管入口部８２ａ、８２ｂ、８２ｃより庫内熱交換器６５ａ、６５ｂ、６５ｃに至る管路部１８２ａｒ、１８２ｂｒ、１８２ｃｒと、戻り管路１８３ａ、１８３ｂ、１８３ｃのうちで庫内熱交換器６５ａ、６５ｂ、６５ｃより庫内配管出口部８３ａ、８３ｂ、８３ｃに至る管路部１８３ａｒ、１８３ｂｒ、１８３ｃｒである。 The cooling circuit 60A is connected from the compressor 61 to the flow divider 64 via the condenser 62 and the expander 63, and after being divided from the flow divider 64 to the internal heat exchangers 65a, 65b, 65c, to the collector 67. And return to the compressor 61 via the accumulator 69. Specifically, the pipeline of the cooling circuit 60A includes a pipeline connected from the compressor 61 to the flow divider 64 via the condenser solenoid valve 68, the condenser 62, the expander 63, and the connection point 86; From the cooler 64 to the cooler inlet solenoid valves 70a, 70b, 70c, and to the cooler inlet solenoid valve 70a across the cooler inlet 82a to the cooler 65a. A pipe 182a, a return pipe 183a connecting from the internal heat exchanger 65a to the collective part 67 disposed in the machine room 50 across the internal pipe outlet 83a, and the cooler inlet solenoid valves 70b and 70c From the pipes 181b and 181c connected to the inlet side connection points 81b and 81c via the check valves 71b and 71c, respectively, and from the inlet side connection points 81b and 81c to the internal pipe inlets 82b and 82c, respectively. Internal heat exchanger 65b, 6 Connected to outlet connection points 84b and 84c disposed in the machine room 50 across the internal pipe outlets 83b and 83c from the internal pipes 182b and 182c and the internal heat exchangers 65b and 65c, respectively. Return pipes 183b and 183c, pipes 184b and 184c that gather from the outlet side connection points 84b and 84c to the gathering part 67 via the cooler outlet solenoid valves 72b and 72c, respectively, and an accumulator 69 from the gathering part 67 And it is comprised by the pipe line which returns to the compressor 61. FIG. In addition, the pipe | tube line arrange | positioned in goods storage 40a, 40b, 40c is the inside heat exchangers 65a, 65b from the piping inlet_port | entrance part 82a, 82b, 82c among the feed lines 182a, 182b, 182c. , 65c to the pipe outlets 83a, 83b, 83c from the internal heat exchangers 65a, 65b, 65c among the pipe lines 182ar, 182br, 182cr and the return pipes 183a, 183b, 183c Parts 183ar, 183br, and 183cr.

一方、加熱冷却循環回路６０Ｂには、冷却循環回路６０Ａに加えて、圧縮機６１より凝縮器電磁弁６８と並列接続されそれぞれ加熱器電磁弁６８ｂ、６８ｃに接続する管路１６８ｂ、１６８ｃと、加熱器電磁弁６８ｂ、６８ｃから入口側接続点８１ｂ、８１ｃに接続する管路１６５ｂ、１６５ｃと、出口側接続点８４ｂ、８４ｃからそれぞれ逆止弁７１、７１を介して接続点８５に接続する管路１７９ｂ、１７９ｃと、接続点８５から庫外熱交換器７６に接続する管路１７９ｄと、庫外熱交換器７６から第２の膨張器７９に接続する管路１７９ｅと、膨張器７９から接続点８６に接続する管路１７９ｆが設けられている。 On the other hand, in the heating / cooling circulation circuit 60B, in addition to the cooling circulation circuit 60A, pipelines 168b, 168c connected in parallel to the condenser electromagnetic valve 68 from the compressor 61 and connected to the heater electromagnetic valves 68b, 68c, respectively, Pipes 165b and 165c connected from the solenoid valves 68b and 68c to the inlet side connection points 81b and 81c, and pipes connected from the outlet side connection points 84b and 84c to the connection point 85 via the check valves 71 and 71, respectively. 179b, 179c, a pipe line 179d connecting from the connection point 85 to the external heat exchanger 76, a pipe line 179e connecting from the external heat exchanger 76 to the second expander 79, and a connection point from the expander 79 A pipe line 179 f connected to 86 is provided.

しかして、加熱冷却循環回路６０Ｂは、圧縮機６１から加熱器電磁弁６８ｂ、６８ｃ、入口側接続点８１ｂ、８１ｃを経由して庫内熱交換器６５ｃ、６５ｂに接続され、庫内熱交換器６５ｃ、６５ｂから出口側接続点８４ｂ、８４ｃ、逆止弁７１，７１、補助熱交換器７６、膨張器７９を経由して分配器６４に接続され、分流器６４から冷却器入口電磁弁７０ａを介して庫内熱交換器６５ａに接続され、集合器６７、アキュムレータ６９を経由して圧縮機６１に戻る回路である。 Thus, the heating / cooling circulation circuit 60B is connected to the internal heat exchangers 65c, 65b from the compressor 61 via the heater electromagnetic valves 68b, 68c and the inlet-side connection points 81b, 81c. 65c and 65b are connected to the distributor 64 via the outlet side connection points 84b and 84c, the check valves 71 and 71, the auxiliary heat exchanger 76 and the expander 79, and the cooler inlet electromagnetic valve 70a is connected from the flow divider 64 to the distributor 64. And is connected to the internal heat exchanger 65a through the collector 67 and the accumulator 69 and returns to the compressor 61.

冷媒は、臨界圧力以下で使用する冷媒、例えばフロン冷媒でＲ１３４ａを使用している。また、臨界圧力以上で使用する冷媒、例えば二酸化炭素冷媒でもよい。 As the refrigerant, a refrigerant used at a critical pressure or lower, for example, a fluorocarbon refrigerant, R134a is used. Moreover, the refrigerant | coolant used above a critical pressure, for example, a carbon dioxide refrigerant, may be sufficient.

制御手段９０は、商品収納庫４０ａ、４０ｂ、４０ｃを冷却加熱の運転モードにより冷却もしくは加熱の制御をするものである。図４に示すように内部にＣＰＵ、メモリを有し、運転モード設定ＳＷ９１の設定により決まる冷却加熱の運転モードに応じて冷媒回路の電磁弁開閉などの制御を行う。運転モードは、商品収納庫４０ａ、４０ｂ、４０ｃの冷却もしくは加熱の運転をＣ、Ｈで示すものであり、商品収納庫の左側から（４０ａ、４０ｂ、４０ｃ）順に、例えば、すべてが冷却の場合にはＣＣＣモード、左の商品収納庫のみが加熱の場合にはＨＣＣモードなどと記す。また、制御手段９０は、庫内温センサＴａ、Ｔｂ、Ｔｃにより検知した温度により、圧縮機６１、凝縮器電磁弁６８、冷却器入口電磁弁７０ａ、７０ｂ、７０ｃ、冷却器出口電磁弁７２ｂ、７２ｃ、加熱器電磁弁６８ｂ、６８ｃなどを制御し、庫内を一定温度範囲内でＯＮ・ＯＦＦ制御するサーモサイクル運転により庫内温度を適温に維持する。 The control means 90 controls the cooling or heating of the product storage boxes 40a, 40b, and 40c by the cooling and heating operation mode. As shown in FIG. 4, a CPU and a memory are provided inside, and control such as opening and closing of the solenoid valve of the refrigerant circuit is performed according to the cooling heating operation mode determined by the setting of the operation mode setting SW91. The operation mode indicates the cooling or heating operation of the product storage units 40a, 40b, and 40c by C and H, and in the order of (40a, 40b, 40c) from the left side of the product storage unit, for example, all are cooling Is described as CCC mode, and when only the left product storage is heated, it is described as HCC mode. Moreover, the control means 90 is the compressor 61, the condenser solenoid valve 68, the cooler inlet solenoid valves 70a, 70b, 70c, the cooler outlet solenoid valve 72b, depending on the temperatures detected by the internal temperature sensors Ta, Tb, Tc. 72c, heater solenoid valves 68b and 68c, etc. are controlled, and the interior temperature is maintained at an appropriate temperature by thermocycle operation in which the interior is controlled to be ON / OFF within a certain temperature range.

かかる構成で運転モード設定ＳＷ９１の操作により運転モードをＣＣＣモードに設定すると、制御手段９０は凝縮器電磁弁６８、冷却器入口電磁弁７０ａ、７０ｂ、７０ｃ、冷却器出口電磁弁７２ｂ、７２ｃを開成し、加熱器電磁弁６８ｂ、６８ｃを閉止する。図５の太線で示すように圧縮機６１で圧縮された高温冷媒は、凝縮器６２にて凝縮され液体となり、膨張器６３で膨張して低温の気液二相流となり、分流器６４で三方に分流された後庫内熱交換器６５ａ、６５ｂ、６５ｃに流入する。流入した冷媒は、庫内熱交換器６５ａ、６５ｂ、６５ｃで蒸発し、商品収納庫４０ａ、４０ｂ、４０ｃを冷却し、蒸発した冷媒は集合器６７で集合して液冷媒を貯留するアキュムレータ６９に流入し気液に分離されて気相の冷媒のみ圧縮機６１に戻る。なお、この冷却は、制御装置９０にて庫内温度センサＴａ、Ｔｂ、Ｔｃによるサーモサイクル運転により庫内温度が適温に制御される。 With this configuration, when the operation mode is set to the CCC mode by operating the operation mode setting SW 91, the control unit 90 opens the condenser solenoid valve 68, the cooler inlet solenoid valves 70a, 70b, 70c, and the cooler outlet solenoid valves 72b, 72c. Then, the heater solenoid valves 68b and 68c are closed. As shown by the thick line in FIG. 5, the high-temperature refrigerant compressed by the compressor 61 is condensed by the condenser 62 to become a liquid, expands by the expander 63, and becomes a low-temperature gas-liquid two-phase flow. And then flows into the internal heat exchangers 65a, 65b, 65c. The inflowing refrigerant evaporates in the internal heat exchangers 65a, 65b, and 65c, cools the product storages 40a, 40b, and 40c, and the evaporated refrigerant collects in the accumulator 67 to the accumulator 69 that stores the liquid refrigerant. It flows in and is separated into gas and liquid, and only the gas phase refrigerant returns to the compressor 61. In this cooling, the controller 90 controls the internal temperature to an appropriate temperature by the thermocycle operation by the internal temperature sensors Ta, Tb, and Tc.

次に、運転モード設定ＳＷ９１の操作により運転モードを左側の1室を冷却し、中、右側の２室を加熱するＣＨＨモードに設定すると、制御手段９０は、加熱器電磁弁６８ｂ、６８ｃ、冷却器入口電磁弁７０ａを開成し、凝縮器電磁弁６８、冷却器入口電磁弁７０ｂ、７０ｃ、冷却器出口電磁弁７２ｂ、７２ｃを閉止する。図６の太線で示すように圧縮機６１で圧縮された高温冷媒は、加熱器電磁弁６８ｂ、６８ｃ、入口側接続点８１ｂ、８１ｃを経由して庫内熱交換器６５ｂ、６５ｃに流入する。庫内熱交換器６５ｂ、６５ｃに流入した冷媒は凝縮し、商品収納庫４０ｂ、４０ｃを加熱し、出口側接続点８４ｂ、８４ｃ、逆止弁７１，７１を経由して集合し、補助熱交換器７６でさらに凝縮して第２の膨張器７９に流入する。膨張器７９に流入した冷媒は、膨張して低温低圧の気液二相流となり分流器６４、冷却器入口電磁弁７０ａを経由して庫内熱交換器６５ａに流入する。庫内熱交換器６５ａに流入した冷媒は、庫内熱交換器６５ａで蒸発して商品収納庫４０ａを冷却し、集合器６７、アキュムレータ６９を経由して圧縮機６１に戻る。このヒートポンプ運転も前述のようにサーモサイクル運転で庫内が適温に維持される。 Next, when the operation mode is set to CHH mode in which the operation mode is set to cool the left one chamber and the middle two right chambers are heated by operating the operation mode setting SW 91, the control means 90 is connected to the heater solenoid valves 68 b, 68 c, cooling The condenser inlet electromagnetic valve 70a is opened, and the condenser electromagnetic valve 68, the condenser inlet electromagnetic valves 70b and 70c, and the condenser outlet electromagnetic valves 72b and 72c are closed. As shown by the thick line in FIG. 6, the high-temperature refrigerant compressed by the compressor 61 flows into the internal heat exchangers 65b and 65c via the heater electromagnetic valves 68b and 68c and the inlet side connection points 81b and 81c. The refrigerant flowing into the internal heat exchangers 65b and 65c condenses, heats the product storage 40b and 40c, and collects via the outlet side connection points 84b and 84c and the check valves 71 and 71, thereby performing auxiliary heat exchange. It further condenses in the vessel 76 and flows into the second expander 79. The refrigerant that has flowed into the expander 79 expands into a low-temperature and low-pressure gas-liquid two-phase flow and flows into the internal heat exchanger 65a via the flow divider 64 and the cooler inlet electromagnetic valve 70a. The refrigerant flowing into the internal heat exchanger 65a evaporates in the internal heat exchanger 65a, cools the product storage 40a, and returns to the compressor 61 via the collector 67 and the accumulator 69. In this heat pump operation, the inside of the cabinet is maintained at an appropriate temperature by the thermocycle operation as described above.

このように、入口側接続点８１ｂ、８１ｃ、出口側接続点８４ｂ、８４ｃが商品収納庫の外側に配設されていることにより、商品収納庫４０ｂ、４０ｃの庫内側に配設されている管路は、庫内熱交換器６５ｂ、６５ｃへの送り管路１８２ｂ、１８２ｃの一部１８２ｂｒ、１８２ｃｒと、戻り管路１８３ｂ、１８３ｃの一部１８３ｂｒ、１８３ｃｒの２系統の管路のみとなるので、冷媒回路の総配管長を短くすることができ、低コストで冷媒回路を構成することができる。 As described above, the inlet side connection points 81b and 81c and the outlet side connection points 84b and 84c are provided outside the product storage case, so that the pipes provided inside the product storage cases 40b and 40c. Since there are only two lines of pipes 182br and 182cr of the feed pipes 182b and 182c to the internal heat exchangers 65b and 65c, and parts 183br and 183cr of the return pipes 183b and 183c, The total piping length of the refrigerant circuit can be shortened, and the refrigerant circuit can be configured at low cost.

１０本体キャビネット
２０外扉
３０内扉
４０ａ、４０ｂ、４０ｃ商品収納庫
６０冷却／加熱ユニット
６１圧縮機
６２凝縮器
６３、７９膨張器
６４分流器
６５ａ、６５ｂ、６５ｃ庫内熱交換器
６８凝縮器電磁弁
６８ａ、６８ｂ加熱器電磁弁
７０ａ、７０ｂ、７０ｃ冷却器入口電磁弁
７２ｂ、７２ｃ冷却器出口電磁弁
８１ｂ、８１ｃ入口側接続点
８４ｂ、８４ｃ入口側接続点
９０制御装置
９１運転モード選択ＳＷ

DESCRIPTION OF SYMBOLS 10 Main body cabinet 20 Outer door 30 Inner door 40a, 40b, 40c Goods storage 60 Cooling / heating unit 61 Compressor 62 Condenser 63, 79 Inflator 64 Shunt 65a, 65b, 65c In-house heat exchanger 68 Condenser electromagnetic Valve 68a, 68b Heater solenoid valve 70a, 70b, 70c Cooler inlet solenoid valve 72b, 72c Cooler outlet solenoid valve 81b, 81c Inlet side connection point 84b, 84c Inlet side connection point 90 Controller 91 Operation mode selection SW

Claims

冷却加熱兼用の商品収納庫を有し、冷却加熱の運転モードにより選択的に商品収納庫を冷却もしくは加熱する自動販売機であって、
冷媒を圧縮する圧縮機と、庫外に設け凝縮器電磁弁を介して冷媒を凝縮する凝縮器と、冷媒を膨張させる膨張手段と、膨張手段より膨張した冷媒を分配する分配器と、庫内に設け前記分配器より冷却器入口電磁弁を介して冷媒を蒸発する複数の庫内熱交換器と、蒸発した冷媒を冷却器出口電磁弁を介して合流する合流器と、にて冷却循環回路を構成するとともに、
前記冷却循環回路に、前記圧縮機から加熱器電磁弁を介して前記庫内熱交換器入口側と前記冷却器入口電磁弁の間に位置する入口側接続点に配管接続し、かつ、前記庫内熱交換器出口側と前記冷却器出口電磁弁の間に位置する出口側接続点から第２膨張手段を介して前記分配器に配管接続することにより、前記庫内熱交換器を凝縮器として作用させてヒートポンプ運転を行う加熱冷却循環回路を構成する自動販売機において、
前記入口側接続点および前記出口側接続点が商品収納庫の外側に配設されていることを特徴とする自動販売機。 A vending machine that has a product storage for cooling and heating, and selectively cools or heats the product storage by an operation mode of cooling and heating,
A compressor for compressing the refrigerant, a condenser for condensing the refrigerant via a condenser solenoid valve, an expansion means for expanding the refrigerant, a distributor for distributing the refrigerant expanded by the expansion means, and the interior A cooling circulation circuit comprising: a plurality of internal heat exchangers that evaporate the refrigerant from the distributor via the cooler inlet electromagnetic valve; and a merger that merges the evaporated refrigerant via the cooler outlet electromagnetic valve As well as
Pipe connection from the compressor to the inlet side connection point located between the inlet side of the internal heat exchanger and the inlet solenoid valve of the cooler through the heater solenoid valve from the compressor, and the warehouse By connecting a pipe to the distributor through the second expansion means from an outlet side connection point located between the inner heat exchanger outlet side and the cooler outlet solenoid valve, the internal heat exchanger is used as a condenser. In a vending machine that constitutes a heating and cooling circuit that operates and operates a heat pump,
The vending machine characterized in that the inlet side connection point and the outlet side connection point are arranged outside the commodity storage.