JP5169383B2

JP5169383B2 - vending machine

Info

Publication number: JP5169383B2
Application number: JP2008091387A
Authority: JP
Inventors: 裕地藤本; 幸裕高野; 敏章土屋; 育孝讃岐; 健松原; 浩司滝口; 尚紀井下; 真石田
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 2008-03-31
Filing date: 2008-03-31
Publication date: 2013-03-27
Anticipated expiration: 2028-03-31
Also published as: JP2009245192A

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 products such as cans, bottles, packs, and plastic bottles, such as beverages, cooled or heated in a refrigerant circuit for sale.

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注目されている（例えば、特許文献１参照）。
しかしながら、この自動販売機は、庫内側の熱交換器を冷却時には蒸発器として使用し、加温時には凝縮器として使用するため、自動販売機の冷却加熱の運転モードによって、冷媒の流し方を変更させる必要がある結果、冷凍回路の配管が複雑になりコスト高を招来するという問題がある。
また、ＣＯ₂冷媒を使用して、製造コストを低減させるために１つの商品収納庫に冷却用熱交換器および加熱用熱交換器の２つの配管回路を設け、庫外に放熱用の庫外熱交換器を用いて冷媒回路を構成することが知られている（例えば、特許文献２参照）。
特開２００２−２９８２１０号公報特開２００６−１１４９３号公報 Reducing carbon dioxide emissions has become an issue 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, to heat the inside of the cabinet is attracting attention (for example, see Patent Document 1).
However, this vending machine uses the heat exchanger inside the cabinet as an evaporator during cooling and as a condenser during heating, so the flow of refrigerant is controlled by the cooling and heating operation mode of the vending machine. As a result, the piping of the refrigeration circuit becomes complicated, resulting in high costs.
In addition, in order to reduce the manufacturing cost using CO ₂ refrigerant, two piping circuits, a heat exchanger for cooling and a heat exchanger for heating, are provided in one product storage, and outside the room for heat radiation. It is known to construct a refrigerant circuit using a heat exchanger (see, for example, Patent Document 2).
JP 2002-298210 A JP 2006-11493 A

特許文献２に記載の冷媒回路では、庫内の加熱用熱交換器の下流側に直列に放熱用の庫外熱交換器を接続しているので、冷凍サイクル上でエンタルピー差を大きく取れ蒸発器の冷却能力が増加する。しかしながら、加熱する商品収納庫の温度が低い場合には、その分庫内の加熱用熱交換器の凝縮温度が低下をするため、加熱熱交換器の加熱能力が低下し、冷却室が早く適温に達する結果、その後はヒータによる加熱単独運転になる。冷却加熱運転全体として、熱効率的に有利な（成績係数ＣＯＰが１以上での）ヒートポンプ運転時間が減少し、ヒータによる加熱単独運転が増加をするので、消費電力が増加することになる。
本発明は、上記実情に鑑みなされたもので、複数の商品収納庫をヒートポンプ運転する自動販売機において、冷却加熱特性の優れ、消費電力が少ない自動販売機を提供することを目的とする。 In the refrigerant circuit described in Patent Document 2, since an external heat exchanger for heat radiation is connected in series downstream of the heat exchanger for heating in the warehouse, the enthalpy difference can be increased on the refrigeration cycle and the evaporator. Increased cooling capacity. However, when the temperature of the product storage to be heated is low, the condensing temperature of the heating heat exchanger in the compartment decreases, so the heating capacity of the heating heat exchanger decreases and the cooling chamber becomes As a result of reaching the appropriate temperature quickly, the heating alone is performed by the heater thereafter. As a whole of the cooling and heating operation, the heat pump operation time that is advantageous in terms of thermal efficiency (with a coefficient of performance COP of 1 or more) decreases and the heating single operation by the heater increases, so that the power consumption increases.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vending machine that excels in cooling and heating characteristics and consumes less power in a vending machine that operates a plurality of commodity storages by heat pump.

上記の目的を達成するために、本発明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、庫外に設け冷媒を凝縮する凝縮器と、この凝縮器の出口に接続された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、庫内に設け冷媒を蒸発する複数の蒸発器と、にて冷却循環回路を構成し、前記圧縮機と、前記蒸発器とともに商品収納庫に配設された加熱熱交換器と、回転数が可変の庫外ファンと、この庫外ファンからの送風により放熱する庫外熱交換器と、圧力調整手段と、前記分配器と、前記蒸発器と、にて加熱冷却循環回路を構成するとともに、庫内温度を検知する庫内温度検知手段と、これらを制御する制御手段を有し、当該制御手段は、庫内温度検知手段により検知した温度と、所定のサーモ運転開始温度およびサーモ運転停止温度との比較により庫内の冷却加熱を開始もしくは停止するサーモサイクル運転を行う自動販売機において、前記サーモ運転開始温度およびサーモ運転停止温度の温度範囲内の値であって第2の判定低温度値、第2の判定高温度値を設け、加熱運転する商品収納庫が第2の判定低温度値よりも低い場合には、前記庫外ファンを減速または停止させて前記庫外熱交換器の放熱量を減少させ、加熱運転する商品収納庫が第2の判定高温度値よりも高く、かつ、冷却運転する商品収納庫が第2の判定高温度値よりも高い場合には、前記庫外ファンを加速させて前記庫外熱交換器の放熱量を増加させることを特徴とする。 In order to achieve the above object, a vending machine according to the present invention is a vending machine that has a product storage that is also used for cooling and heating, and that selectively cools or heats the product storage according to an operation mode of cooling and heating. A compressor that compresses the refrigerant, a condenser that is provided outside the refrigerator and condenses the refrigerant, an expansion means that expands the refrigerant connected to an outlet of the condenser, and a distribution that distributes the refrigerant expanded by the expansion means And a plurality of evaporators provided in the warehouse for evaporating the refrigerant constitute a cooling circuit, the compressor, the heating heat exchanger disposed in the product storage together with the evaporator, and the rotation constituting the external fan having a variable, and outside-compartment heat exchanger for radiating the air blowing from the external fan, and a pressure adjusting means, and the distributor, and the evaporator, a heating-cooling circulation circuit at In addition, the internal temperature detection means for detecting the internal temperature The controller has a control means for controlling these, and the control means starts cooling heating in the cabinet by comparing the temperature detected by the cabinet temperature detection means with a predetermined thermo-operation start temperature and thermo-operation stop temperature, or In the vending machine that performs the thermocycle operation to be stopped, it is a value within the temperature range of the thermooperation start temperature and the thermooperation stop temperature, and the second determination low temperature value and the second determination high temperature value are provided, and heating is performed. When the product storage to be operated is lower than the second determination low temperature value, the external storage fan is decelerated or stopped to reduce the heat release amount of the external heat exchanger, and the product storage to be heated is operated. When the product storage to be cooled is higher than the second determination high temperature value and higher than the second determination high temperature value, the external fan is accelerated to release the external heat exchanger. Specially to increase the amount of heat It is a sign.

本発明に係る自動販売機は、庫内の加熱熱交換器の下流に庫外熱交換器を設けてヒートポンプ運転を行うときに、庫外ファンを庫内空気温度に合せて庫外熱交換器からの放熱量を制御することにより、加熱運転する商品収納庫の庫内温度が低い場合には、前記庫外ファンを減速または停止させて庫内の加熱熱交換器の凝縮温度を上げて加熱効率を向上させ、加熱運転する商品収納庫の庫内温度が高く、かつ、冷却運転する商品収納庫の庫内温度が高い場合には、前記庫外ファンを増速させて庫内の蒸発器の冷却能力を向上させるので、冷却加熱運転全体として、熱効率的に有利なヒートポンプ運転時間が増加し、ヒータによる加熱単独運転および庫外の凝縮器で放熱する冷却単独運転の時間が減少をするので、消費電力を低減することができる。 In the vending machine according to the present invention, when an external heat exchanger is provided downstream of the internal heating heat exchanger and the heat pump operation is performed, the external fan is matched to the internal air temperature to operate the external heat exchanger. By controlling the amount of heat released from the product, when the temperature inside the product storage to be heated is low, the outside fan is decelerated or stopped to increase the condensation temperature of the heating heat exchanger inside the product. When the internal temperature of the product storage for heating operation is high and the internal temperature of the product storage for cooling operation is high, the outside fan is accelerated to increase the evaporator inside the storage. As a result, the heat pump operation time, which is advantageous in terms of heat efficiency, is increased for the entire cooling and heating operation, and the time for the single heating operation by the heater and the single cooling operation to dissipate heat from the condenser outside the storage is reduced. Can reduce power consumption .

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。
（実施例）
まず、本発明の実施例１に係る自動販売機について図１―９を参照しつつ説明する。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は本発明の実施例に係る冷媒回路図である。図４は制御装置のブロック図を示し、図５はＣＣＣモードの冷媒の流れを示す回路図であり、図６はＨＣＣモードの冷媒の流れを示す回路図であり、（ａ）はヒートポンプ運転時、（ｂ）は冷却単独運転時を示す。図７はＨＨＣモードの冷媒の流れを示す回路図である。図８は実施例に係る自動販売機の制御のフローチャートである。図９は実施例に係る制御の庫外ファンに関する動作表である。なお、冷却加熱の設定モードを表すＣＣＣモード、ＣＨＣモード、ＨＨＣモードについての説明は後述する。
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内の庫内温度センサＴａ、Ｔｂ、Ｔｃ、および機械室５０内の周温センサＴｏ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。 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.
(Example)
First, a vending machine according to Embodiment 1 of the present invention will be described with reference to FIGS. 1-9. 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 according to the embodiment of the present invention. is there. 4 is a block diagram of the control device, FIG. 5 is a circuit diagram showing the flow of refrigerant in the CCC mode, FIG. 6 is a circuit diagram showing the flow of refrigerant in the HCC mode, and (a) is a heat pump operation. (B) shows the time of cooling single operation. FIG. 7 is a circuit diagram showing the flow of refrigerant in the HHC mode. FIG. 8 is a flowchart of the control of the vending machine according to the embodiment. FIG. 9 is an operation table relating to the fan outside the control of the control according to the embodiment. The CCC mode, CHC mode, and HHC mode representing the cooling / heating setting mode will be described later.
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 the interior of the main body cabinet 10 up and down. The bottom plate 11 is divided into two sections, and the upper part is divided into, for example, three independent product storage units 40a, 40b, 40c divided by two heat insulating partition plates 40w, and the product storage units 40a, 40b, 40c are formed in the lower part. A machine room 50 for storing a cooling / heating unit 60 for cooling or heating, an inside temperature sensor Ta, Tb, Tc in the product storages 40a, 40b, 40c, and a machine disposed inside the outer door 20. And a control means 90 for controlling the cooling and heating operation of the vending machine by the peripheral temperature sensor To in the chamber 50.

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。
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。
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４０ｃ、４０ａ、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４０ｃを冷却専用とし、商品収納庫４０ａ、４０ｂ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。 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 drawing. Necessary for selling products, such as a product display room for exhibiting samples, a selection button for selecting products to be sold, a money slot for inserting money, a product outlet 21 for taking out paid items, etc. The structure which becomes is arranged.
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 two 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, so that 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 something to be done. 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. Further, it is possible to prevent the cool air or warm air in the product storage boxes 40a, 40b, and 40c from flowing out, and to open them as necessary during maintenance.
The product storage units 40a, 40b, and 40c are for storing products such as canned beverages and beverages containing plastic bottles while maintaining a desired temperature, and the capacity of the storage units is the product storage units 40c, 40a. , 40b in a large manner. In this embodiment, the product storage 40c is exclusively used for cooling, and the product storages 40a and 40b are also used for cooling and heating. The product storage racks R, 40a, 40b, and 40c each have a product storage rack R having a product take-out mechanism for storing products in a vertically aligned manner and discharging the products one by one in response to a sales signal. There is a product carry-out chute 42 for carrying out 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、冷凍サイクルを構成する圧縮機６１、凝縮器６２、膨張弁６３、分流器６４と、底板１１を跨いで庫内の蒸発器６５ａ、６５ｂ、６５ｃとを冷媒配管で連結した冷却部と、圧縮機６１、加熱熱交換器６６ａ、６６ｂ、庫外熱交換器７６、電子膨張弁７９、蒸発器６５ａ、６５ｂ、とを冷媒配管で連結した加熱部と、商品収納庫４０ａ、４０ｂに取設された加熱ヒータ８０ａ、８０ｂとから構成され、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。
凝縮器６２の後部には庫外ファン６２ｆが取設され、庫外ファン６２ｆは機械室５０の前面開口部より空気を吸入し、凝縮器６２からの高温排熱および圧縮機６１からの高温排熱と熱交換し、機械室５０の背面開口部へ排気する。
蒸発器６５ａ、６５ｂ、６５ｃは、商品収納庫４０ａ、４０ｂ、４０ｃを冷却するためのものであり、各商品収納庫の下部に取設されている。また、加熱熱交換器６６ｂ、６６ａは、蒸発器６５ｂ、６５ａの前に取設され、商品収納庫４０ｂ、４０ａを加熱するためのものである。蒸発器６５ａ、６５ｂ、６５ｃ、加熱熱交換器６６ｂ、６６ａは、各商品収納庫４０ａ、４０ｂ、４０ｃにおいて、風胴６７で囲繞され、その後方には庫内ファン６５ｆおよびダクト６７ｄが取設されている。商品収納庫内の冷却加熱は、蒸発器６５ａ、６５ｂ、６５ｃ、加熱熱交換器６６ｂ、６６ａ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、ダクト６７ｄより回収することで行われる。 The cooling / heating unit 60 includes a compressor 61, a condenser 62, an expansion valve 63, a flow divider 64, and evaporators 65a, 65b, and 65c in the warehouse across the bottom plate 11 through refrigerant pipes that constitute a refrigeration cycle. A cooling unit, a compressor 61, heating heat exchangers 66a and 66b, an external heat exchanger 76, an electronic expansion valve 79, and evaporators 65a and 65b connected by a refrigerant pipe, and a product storage The heaters 80a and 80b installed in 40a and 40b are used to cool or heat the product S in the product storage rack R by circulating cold air or hot air in the cabinet.
An outside fan 62f is installed at the rear part of the condenser 62. The outside fan 62f sucks air from the front opening of the machine room 50, and discharges high-temperature exhaust heat from the condenser 62 and high-temperature exhaust from the compressor 61. The heat is exchanged with heat and exhausted to the rear opening of the machine room 50.
The evaporators 65a, 65b, and 65c are for cooling the product storages 40a, 40b, and 40c, and are installed in the lower part of each product storage. Moreover, the heating heat exchangers 66b and 66a are installed in front of the evaporators 65b and 65a, and are for heating the product storage boxes 40b and 40a. The evaporators 65a, 65b, 65c and the heating heat exchangers 66b, 66a are surrounded by a wind tunnel 67 in each product storage 40a, 40b, 40c, and an internal fan 65f and a duct 67d are installed behind them. Has been. For cooling and heating in the product storage, the air cooled or heated by the evaporators 65a, 65b and 65c and the heating heat exchangers 66b and 66a is sent to the product S in the product storage and collected from the duct 67d. Is done.

庫外熱交換器７６は、凝縮器６２と機械室５０内に並設された熱交換器でヒートポンプ運転時に蒸発器６５ａ（もしくは６５ｂ）、６５ｃの蒸発量に見合うように加熱熱交換器６６ａ，６６ｂの放熱量を補うためのものである。庫外熱交換器７６の放熱のためのファンは、ここでは凝縮器６２の庫外ファン６２ｆにて兼用をしている。なお、ファンは、庫外ファン６２ｆと別置したものでも良い。
庫外ファン６２ｆは、前述のように庫外熱交換器７６、凝縮器６２による凝縮熱を排気するためのものであり、プロペラ型の低圧高風量のファンである。庫外ファン６２ｆは、制御装置９０からの制御指令により回転数を増減させて庫該熱交換機の排気熱量を制御するものである。制御装置９０による庫外ファンの回転数の制御は庫外ファン６２ｆの直流モータに通電する電流のパルス数を増減することにより行われる。
冷却／加熱ユニット６０の冷媒回路構成について図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８１と庫内の加熱冷却を同時に行う（ヒートポンプ運転を行う）加熱冷却循環回路８２を有している。
冷却循環回路８１は、圧縮機６１、電磁弁６８、凝縮器６２、逆止弁７１、膨張弁６３（膨張手段、細管でも良い）を介して、分流器６４に接続し、分流器６４より電磁弁７０ａ、７０ｂ、７０ｃ、蒸発器６５ａ、６５ｂ、６５ｃに接続されて、蒸発器６５ａ、６５ｂ、６５ｃからの配管は集合してアキュムレータ６９を介して圧縮機６１に戻る回路である。 The outside heat exchanger 76 is a heat exchanger arranged in parallel with the condenser 62 and the machine room 50, and the heating heat exchanger 66a is adjusted so as to match the evaporation amount of the evaporators 65a (or 65b) and 65c when the heat pump is operated. , 66b to compensate for the heat radiation amount. The fan for heat dissipation of the external heat exchanger 76 is also used here as the external fan 62f of the condenser 62. The fan may be a separate fan from the external fan 62f.
The outside fan 62f is for discharging the heat of condensation by the outside heat exchanger 76 and the condenser 62 as described above, and is a propeller type low pressure and high air volume fan. The outside fan 62f controls the exhaust heat quantity of the heat exchanger by increasing or decreasing the number of rotations according to a control command from the control device 90. The control of the rotation speed of the outside fan by the control device 90 is performed by increasing or decreasing the number of pulses of the current applied to the DC motor of the outside fan 62f.
The refrigerant circuit configuration of the cooling / heating unit 60 will be described in detail with reference to FIG. The refrigerant circuit configuration includes a cooling circulation circuit 81 that only cools the inside of the warehouse and a heating and cooling circulation circuit 82 that simultaneously performs heating and cooling inside the warehouse (performs a heat pump operation).
The cooling circuit 81 is connected to the flow divider 64 via the compressor 61, the electromagnetic valve 68, the condenser 62, the check valve 71, and the expansion valve 63 (an expansion means or a thin tube may be used). It is a circuit connected to the solenoid valves 70a, 70b, 70c and the evaporators 65a, 65b, 65c, and the pipes from the evaporators 65a, 65b, 65c are collected and returned to the compressor 61 via the accumulator 69.

一方、加熱冷却循環回路８２は、圧縮機６１から並列に電磁弁６８ａ、６８ｂを介して加熱熱交換器６６ａ、６６ｂに接続され、加熱熱交換器６６ａ、６６ｂから逆止弁７１、７１を介して集合し、庫外熱交換器７６から圧力調整手段としての電子膨張弁７９を介して分流器６４に接続され、蒸発器６５ａ、６５ｂ、６５ｃから合流してアキュムレータ６９を介して圧縮機６１に戻る回路である。
なお、図３中の破線は、商品収納庫４０ａ、４０ｂ、４０ｃを示し、商品収納庫４０ａ、４０ｂ、４０ｃ内に庫内温度センサＴａ、Ｔｂ、Ｔｃおよび商品収納庫４０ａ、４０ｂに加熱ヒータ８０ａ、８０ｂが取設されていることを示す。また、周温センサＴｏは、収納庫外の機械室５０に取設されていることを示す。
冷媒は、臨界圧力内で使用する冷媒、例えばフロン冷媒でＲ１３４ａを使用している。
制御手段９０は、商品収納庫４０ａ、４０ｂ、４０ｃの冷却もしくは加熱を制御するものであり、図４に示すように内部にＣＰＵ、メモリを有し、Ｈ／Ｃ設定モードＳＷ９１により運転モードを設定して冷媒回路の電磁弁開閉の制御を行う。Ｈ／Ｃ設定モードＳＷ９１は、商品収納庫４０ａ、４０ｂ、４０ｃの冷却もしくは加熱の運転を設定するためのものであり、冷却の「Ｃ」と加熱の「Ｈ」の組み合わせで表わし、商品収納庫の左側から順に（４０ａ、４０ｂ、４０ｃ）、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モードと記す。 On the other hand, the heating / cooling circulation circuit 82 is connected to the heating heat exchangers 66a, 66b in parallel from the compressor 61 via electromagnetic valves 68a, 68b, and from the heating heat exchangers 66a, 66b via check valves 71, 71. Are connected to a flow divider 64 from an external heat exchanger 76 via an electronic expansion valve 79 as pressure adjusting means, merged from the evaporators 65a, 65b, and 65c, and connected to the compressor 61 via an accumulator 69. It is the circuit which returns to.
In addition, the broken line in FIG. 3 shows goods storage 40a, 40b, 40c, and it is heating heater in goods temperature sensor Ta, Tb, Tc and goods storage 40a, 40b in goods storage 40a, 40b, 40c. It shows that 80a and 80b are installed. Further, the ambient temperature sensor To indicates that it is installed in the machine room 50 outside the storage.
As the refrigerant, R134a is used as a refrigerant used within a critical pressure, for example, a fluorocarbon refrigerant.
The control means 90 controls the cooling or heating of the product storages 40a, 40b, 40c. As shown in FIG. 4, the control means 90 has a CPU and a memory inside, and the operation mode is set by the H / C setting mode SW91. Set to control the opening and closing of the solenoid valve of the refrigerant circuit. The H / C setting mode SW91 is for setting the cooling or heating operation of the product storage units 40a, 40b, 40c, and is expressed by a combination of “C” for cooling and “H” for heating. In order from the left side (40a, 40b, 40c), for example, CCC mode is indicated when all are cooled, and HCC mode is indicated when only the left product storage is heated.

制御手段９０は、庫内温度センサＴａ、Ｔｂ、Ｔｃにより各庫内の温度を検知して、メモリ内に記憶されたサーモ運転停止温度（以下、サーモＯＦＦ設定温度という）、およびサーモ開始運転温度（以下、サーモＯＮ設定温度という）と比較してサーモサイクル運転を行う。具体的には、庫内温度がサーモＯＦＦ設定温度（例えば、冷却の場合は−２℃、加熱の場合は６５℃、以下冷却ＯＦＦ温度、加熱ＯＦＦ温度という）になったときにはその庫内の蒸発器、加熱熱交換器に関する電磁弁を閉止し、または、ヒータを停止する。庫内温度がサーモＯＮ設定温度（例えば、冷却の場合は８℃、加熱の場合は４１℃、以下冷却ＯＮ温度、加熱ＯＮ温度という）になったときにはその庫内の蒸発器、加熱熱交換器に関する電磁弁を開成し、または、ヒータを通電して、庫内を適温に制御する。
また、制御装置９０のメモリ内には、庫内温度の第２判定値として所定のサーモ運転開始温度およびサーモ運転停止温度の温度範囲内の値で第2判定低温度値、第 2の判定高温度値を設けられている。たとえば、加熱の場合には、第2の判定低温度値が４５℃、第2の判定高温度値が５５℃、冷却の場合には、第2の判定低温度値が０℃、第2の判定高温度値が６℃として設定してある。後述するように、この第２判定値は、庫外熱交換器７６の放熱量制御を庫外ファン６２ｆの回転数で行うことに使用される。 The control means 90 detects the temperature in each chamber by the chamber temperature sensors Ta, Tb, Tc, and the thermo operation stop temperature (hereinafter referred to as the thermo OFF set temperature) stored in the memory and the thermo start operation. Compared with temperature (hereinafter referred to as “thermo ON set temperature”), thermocycle operation is performed. Specifically, when the internal temperature reaches the thermo OFF set temperature (for example, -2 ° C for cooling, 65 ° C for heating, hereinafter referred to as cooling OFF temperature, heating OFF temperature). Close the solenoid valve for the evaporator and heating heat exchanger, or stop the heater. When the chamber temperature reaches the thermo ON set temperature (for example, 8 ° C for cooling, 41 ° C for heating, hereinafter referred to as cooling ON temperature, heating ON temperature), the evaporator in the chamber, heating heat exchange Open the solenoid valve related to the container, or turn on the heater to control the inside of the cabinet at an appropriate temperature.
Further, in the memory of the control device 90, the second determination low temperature value and the second determination high value are set as the second determination value of the internal temperature by a value within the temperature range of the predetermined thermo-operation start temperature and thermo-operation stop temperature. A temperature value is provided. For example, in the case of heating, the second determination low temperature value is 45 ° C., the second determination high temperature value is 55 ° C., and in the case of cooling, the second determination low temperature value is 0 ° C. The judgment high temperature value is set as 6 ° C. As will be described later, the second determination value is used to control the heat radiation amount of the external heat exchanger 76 at the rotational speed of the external fan 62f.

かかる構成でＨ／Ｃ設定モードＳＷ９１を操作してＣＣＣモードに設定すると、制御手段９０は、電磁弁６８、７０ａ、７０ｂ、７０ｃを開成し、電磁弁６８ｂ、６８ａを閉止して、３室すべてを冷却する冷却単独運転を行う。具体的には、図５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に凝縮され液冷媒となり、膨張弁６３で膨張して低温の気液２相流となり、分流器６４で３方に分流され蒸発器６５ａ、６５ｂ、６５ｃで蒸発し、商品収納庫４０ａ、４０ｂ、４０ｃが冷却される。気体となった冷媒は、液冷媒を貯留するアキュムレータ６９を介して気液分離させて圧縮機６１に戻る。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。
ここで１室、例えば、商品収納庫４０ｃがサーモＯＦＦ設定温度（冷却ＯＦＦ温度）に達すれば、電磁弁７０ｃを閉止して、２室の冷却単独運転が行われる。
また、Ｈ／Ｃ設定モードＳＷ９１を操作して左の１室を加熱するＨＣＣモードに設定すると、制御手段９０は、電磁弁６８ａ、７０ｂ、７０ｃを開成し、電磁弁６８、６８ｂ、７０ａを閉止して、１室加熱、２室を冷却するヒートポンプ運転を行う。具体的には、図６（ａ）で示すように圧縮機６１で圧縮された高温冷媒は、加熱熱交換器６６ａに流入して、庫内の空気と熱交換して凝縮され、熱交換された空気により商品収納庫４０ａを加熱する。加熱熱交換器６６ａで凝縮され高温冷媒は、さらに庫外熱交換器７６で凝縮され、電子膨張弁７９で膨張される。電子膨張弁７９で膨張された冷媒は、低温の気液２相流となり、分流器６４で分流され蒸発器６５ｂ、６５ｃで蒸発し、商品収納庫４０ｂ、４０ｃが冷却される。蒸発器６５ｂ、６５ｃで気体となった冷媒は、アキュムレータ６９を介して圧縮機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。 When the H / C setting mode SW91 is operated to set the CCC mode in such a configuration, the control unit 90 opens the electromagnetic valves 68, 70a, 70b, and 70c, closes the electromagnetic valves 68b and 68a, and all three chambers. A single cooling operation is performed to cool the air. Specifically, as shown in FIG. 5, the high-temperature refrigerant compressed by the compressor 61 is condensed in the condenser 62 to become liquid refrigerant, and expands by the expansion valve 63 to become a low-temperature gas-liquid two-phase flow. The product 64 is diverted in three directions and evaporated by the evaporators 65a, 65b, 65c, and the product storages 40a, 40b, 40c are cooled. The refrigerant that has become gas is separated into gas and liquid via an accumulator 69 that stores liquid refrigerant and returns to the compressor 61. In this cooling, the controller 90 controls the internal temperature to an appropriate temperature by the thermocycle operation using the internal temperature sensors Ta, Tb, and Tc.
Here, when one room, for example, the product storage case 40c reaches the thermo OFF set temperature (cooling OFF temperature), the solenoid valve 70c is closed and the single cooling operation of the two rooms is performed.
Further, when the H / C setting mode SW91 is operated to set the HCC mode in which the left chamber is heated, the control means 90 opens the electromagnetic valves 68a, 70b, 70c, and opens the electromagnetic valves 68, 68b, 70a. Close, and heat pump operation to heat 1 room and cool 2 rooms. Specifically, as shown in FIG. 6 (a), the high-temperature refrigerant compressed by the compressor 61 flows into the heating heat exchanger 66a and is condensed by exchanging heat with the air in the warehouse. The product storage case 40a is heated by the air thus generated. The high-temperature refrigerant condensed by the heating heat exchanger 66 a is further condensed by the external heat exchanger 76 and expanded by the electronic expansion valve 79. The refrigerant expanded by the electronic expansion valve 79 becomes a low-temperature gas-liquid two-phase flow, is divided by the flow divider 64 and is evaporated by the evaporators 65b and 65c, and the product storage boxes 40b and 40c are cooled. The refrigerant that has become gas in the evaporators 65b and 65c returns to the compressor 61 via the accumulator 69. As described above, this heat pump operation also maintains the inside temperature at a suitable temperature by the thermocycle operation.

ここで加熱運転している商品収納庫４０ａがサーモＯＦＦ設定温度（加熱ＯＦＦ温度）に達すれば、商品収納庫４０ｂ、４０ｃの２室の冷却単独運転が行われる。具体的には、図６（ｂ）に示すように電磁弁６８ａを閉止し、電磁弁６８を開成して、圧縮機６１、凝縮器６２、膨張弁６３、凝縮器６５ｂ、６５ｃで形成される冷却循環回路８１を冷媒が循環することにより冷却単独運転が行われる。このとき、凝縮器６２で発生する凝縮熱は自動販売機外に放出されることになり、その分消費電力が増加することになる。
また、Ｈ／Ｃ設定モードＳＷ９１を操作して左側と中央の２室を加熱するＨＨＣモードに設定すると、制御手段９０は、電磁弁６８ｂ、６８ａ、７０ｃを開成し、電磁弁６８、７０ｂ、７０ａを閉止して、２室加熱、１室を冷却するヒートポンプ運転を行う。具体的には、図７で示すように圧縮機６１で圧縮された高温冷媒は、加熱熱交換器６６ｂ、６６ａに流入して、庫内の空気と熱交換して凝縮され、熱交換された空気により商品収納庫４０ｂ、４０ａを加熱する。加熱熱交換器６６ｂ、６６ａで凝縮された高温冷媒は、さらに庫外熱交換器７６で凝縮され、電子膨張弁７９で膨張される。電子膨張弁７９で膨張された冷媒は、低温の気液２相流となり、分流器６４を経由して蒸発器６５ｃで蒸発し、商品収納庫４０ｃが冷却される。蒸発器６５ａで気体となった冷媒は、アキュムレータ６９を介して圧縮機６１に戻り冷凍サイクル運転がされる。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。 When the product storage 40a that is being heated here reaches the thermo OFF set temperature (heating OFF temperature), the cooling operation of the two chambers of the product storages 40b and 40c is performed. Specifically, as shown in FIG. 6B, the electromagnetic valve 68a is closed and the electromagnetic valve 68 is opened to form the compressor 61, the condenser 62, the expansion valve 63, and the condensers 65b and 65c. The refrigerant is circulated through the cooling circuit 81 so that the cooling single operation is performed. At this time, the heat of condensation generated in the condenser 62 is released outside the vending machine, and the power consumption increases accordingly.
In addition, when the H / C setting mode SW91 is operated to set the HHC mode in which the left and center chambers are heated, the control means 90 opens the solenoid valves 68b, 68a, and 70c, and the solenoid valves 68, 70b, and 70a. , And heat pump operation to heat the two rooms and cool the first room. Specifically, as shown in FIG. 7, the high-temperature refrigerant compressed by the compressor 61 flows into the heating heat exchangers 66b and 66a, is condensed by exchanging heat with the air in the warehouse, and is heat-exchanged. The product storage boxes 40b and 40a are heated by the heated air. The high-temperature refrigerant condensed in the heating heat exchangers 66 b and 66 a is further condensed in the external heat exchanger 76 and expanded by the electronic expansion valve 79. The refrigerant expanded by the electronic expansion valve 79 becomes a low-temperature gas-liquid two-phase flow, evaporates in the evaporator 65c via the flow divider 64, and cools the commodity storage 40c. The refrigerant turned into gas in the evaporator 65a returns to the compressor 61 via the accumulator 69 and is operated in the refrigeration cycle. As described above, the heat pump operation is also thermocycled to maintain the interior at an appropriate temperature.

ここで冷却運転している商品収納庫４０ｃがサーモＯＦＦ設定温度（冷却ＯＦＦ温度）に達すれば、商品収納庫４０ａ、４０ｂの２室の加熱単独運転が行われる。具体的には、圧縮機６１を停止し、全ての電磁弁を閉止して、ヒータ８０ｂ、８０ｃを通電する。このとき、ヒータ８０ｂ、８０ｃによる加熱は、成績係数ＣＯＰが１以上のヒートポンプ運転と比較して熱効率が低いので、消費電力が増加することになる。
次に、冷却加熱の制御方法について、図８、９のフローチャート、動作表を参照しつつ説明をする。なお、説明の便宜上、以下、商品収納庫４０ａ、４０ｂ、４０ｃを左室４０ａ、中室４０ｂ、右室４０ｃといい、冷却運転する商品収納庫を冷却室、加熱運転する商品収納庫を加熱室という。
まず、図８に示すように、冷却加熱運転が停止をしている状態、すなわち圧縮機６１が停止し、全ての電磁弁が閉止をしている状態から運転開始の条件（Ｓ１１）が発生した場合から説明をする。ステップＳ１１の運転開始の条件とは、具体的には、加熱室の１室が加熱ＯＮ温度以下となった場合、または、冷却室の全てが冷却ＯＮ温度以上になった場合であり、運転開始の条件が発生すると制御手段９０は圧縮機６１を起動して冷却加熱運転を開始した後、庫内温度を読み込み（Ｓ１２）、庫内温度の判定を行う（Ｓ１３）。ステップＳ１３の庫内温度の判定では、冷却中の冷却室がそれぞれ冷却ＯＦＦ温度に到達したか、加熱中の加熱室が加熱ＯＦＦ温度に到達したかを判定する。 Here, when the product storage 40c that is performing the cooling operation reaches the thermo OFF set temperature (cooling OFF temperature), the single heating operation of the two chambers of the product storage 40a and 40b is performed. Specifically, the compressor 61 is stopped, all the solenoid valves are closed, and the heaters 80b and 80c are energized. At this time, the heating by the heaters 80b and 80c has a lower thermal efficiency than the heat pump operation with a coefficient of performance COP of 1 or more, and thus power consumption increases.
Next, a cooling and heating control method will be described with reference to the flowcharts and operation tables of FIGS. For convenience of explanation, hereinafter, the product storage units 40a, 40b, and 40c are referred to as the left chamber 40a, the middle chamber 40b, and the right chamber 40c, and the product storage unit that performs the cooling operation is the cooling chamber and the product storage unit that performs the heating operation is heated. It is called a room.
First, as shown in FIG. 8, the condition for starting operation (S11) occurs from the state where the cooling heating operation is stopped, that is, the compressor 61 is stopped and all the solenoid valves are closed. I will explain from the case. The condition for starting operation in step S11 is specifically when one of the heating chambers is below the heating ON temperature or when all the cooling chambers are above the cooling ON temperature, and the operation starts. When the above condition occurs, the controller 90 starts the compressor 61 and starts the cooling and heating operation, reads the internal temperature (S12), and determines the internal temperature (S13). In the determination of the internal temperature in step S13, it is determined whether each of the cooling chambers being cooled has reached the cooling OFF temperature or whether the heating chamber being heated has reached the heating OFF temperature.

加熱中の加熱室が加熱ＯＦＦ温度に到達したときには（Ｓ１３／分岐１）、加熱室の運転を停止し（Ｓ１４）、まだ加熱中の加熱室があるかを判定する（Ｓ１５）。加熱中の加熱室があれば（Ｓ１５／Ｎｏ）、ステップＳ１２に戻り、加熱中の加熱室がなければ（Ｓ１５／Ｙｅｓ）、図６（ｂ）に示すような冷却単独の運転に切り替わり、ステップＳ１２に戻る。
前記ステップＳ１３で冷却中の冷却室が冷却ＯＦＦ温度に到達したときには（Ｓ１３／分岐２）、その冷却室の運転を停止し（Ｓ１７）、まだ冷却中の冷却室があるかを判定する（Ｓ１８）。冷却中の冷却室があれば（Ｓ１８／Ｎｏ）、ステップＳ１２に戻り、冷却中の冷却室がなければ（Ｓ１８／Ｙｅｓ）、ヒータ８０ａまたは８０ｂ（または両方）による加熱単独の運転に切り替わり、ステップＳ１２に戻る。
なお、ステップＳ１３にて全ての商品収納庫４０ａ，４０ｂ，４０ｃが加熱もしくは冷却のＯＦＦ温度に達すれば（Ｓ１３／分岐３）、圧縮機６１を停止して冷却加熱運転を中止して、運転開始の条件が発生するまで待機することになる。
また、ステップＳ１３で冷却中の冷却室が冷却ＯＦＦ温度に到達せず、加熱中の加熱室も加熱ＯＦＦ温度に到達していないときには（Ｓ１３／分岐４）、ヒートポンプ運転を継続し、庫内温度の第２判定を行う（Ｓ２０）。ステップＳ２０の第２判定では、第２判定値として所定のサーモ運転開始温度およびサーモ運転停止温度の温度範囲内の値に設定された第2の判定低温度値、第2の判定高温度値が使用される。第２判定値と各室の庫内温度を比較して、図９の動作表に示されるように、Ｈ／Ｃ設定モードＳＷ９１によって設定された運転モードに応じて庫外ファン６２ｆを全速で回転させる場合（Ｓ２０／分岐１）、庫外ファン６２ｆを中速または低速で回転させる場合（Ｓ２０／分岐２）、庫外ファン６２ｆを停止する場合（Ｓ２０／分岐３）に分岐する制御が行われる。 When the heating chamber being heated reaches the heating OFF temperature (S13 / branch 1), the operation of the heating chamber is stopped (S14), and it is determined whether there is still a heating chamber being heated (S15). If there is a heating chamber being heated (S15 / No), the process returns to step S12. If there is no heating chamber being heated (S15 / Yes), the operation is switched to the cooling-only operation as shown in FIG. 6B. Instead, the process returns to step S12.
When the cooling chamber being cooled reaches the cooling OFF temperature in step S13 (S13 / branch 2), the operation of the cooling chamber is stopped (S17), and it is determined whether there is a cooling chamber still being cooled. (S18). If there is a cooling chamber being cooled (S18 / No), the process returns to step S12. If there is no cooling chamber being cooled (S18 / Yes), the operation is switched to the heating-only operation by the heater 80a or 80b (or both), The process returns to step S12.
If all the product storage units 40a, 40b, 40c reach the heating or cooling OFF temperature in step S13 (S13 / branch 3), the compressor 61 is stopped and the cooling and heating operation is stopped. It will wait until the conditions for starting operation occur.
Further, when the cooling chamber being cooled does not reach the cooling OFF temperature in step S13 and the heating chamber being heated has not reached the heating OFF temperature (S13 / branch 4), the heat pump operation is continued, A second temperature determination is made (S20). In the second determination of step S20, the second determination low temperature value and the second determination high temperature value set as values within the temperature range of the predetermined thermo-operation start temperature and thermo-operation stop temperature are set as the second determination values. used. By comparing the second determination value and the internal temperature of each room, as shown in the operation table of FIG. 9, the external fan 62f is set at full speed according to the operation mode set by the H / C setting mode SW91. Control for branching when rotating (S20 / branch 1), when rotating the external fan 62f at medium or low speed (S20 / branch 2), or when stopping the external fan 62f (S20 / branch 3) Is done.

例えば、ＣＨＣモードにおいて、加熱室である中室４０ｂの庫内温度が第2の判定高温度値（例えば５５℃）より高く、冷却室である左室４０ａ、右室４０ｃの庫内温度が第2の判定高温度値（例えば６℃）より高い場合には、冷却室の冷却能力が不足気味であるので、庫外ファン６２ｆを全速で回転させ、庫外熱交換器７６の放熱量を増やすことにより、蒸発器６５ａ，６５ｃの蒸発量を増やし、冷却室の冷却能力を増加させるヒートポンプ運転を行う。また、加熱室である中室４０ｂの庫内温度が前記第2の判定高温度値より高く、冷却室である左室４０ａ、右室４０ｃの一方の庫内温度が前記第2の判定高温度値より高く、他方の庫内温度が第2の判定低温度値（例えば０℃）より低い場合には、庫外ファン６２ｆを中速または低速で回転させ、適宜な凝縮温度と冷却能力でヒートポンプ運転を行う。また、加熱室である中室４０ｂの庫内温度が第2の判定低温度値（例えば４５℃）より低く、冷却室である左室４０ａ、右室４０ｃの庫内温度が、前記第2の判定高温度値より高いかもしくは前記第2の判定低温度値より低い場合には、中室４０ｂの加熱能力が不足しているので、庫外ファン６２ｆを停止させ、庫外熱交換器７６の放熱量を自然放熱分に抑制することにより、加熱熱交換器６６ｂの凝縮温度を上昇させて中室４０ｂの加熱能力を増加させるヒートポンプ運転を行う。なお、このときには、さらに庫内ファン６５ｆの回転数を上げて加熱熱交換器６６ｂの放熱量を増加させても良い。 For example, in the CHC mode, the internal temperature of the middle chamber 40b that is the heating chamber is higher than the second determined high temperature value (for example, 55 ° C.), and the internal temperatures of the left chamber 40a and the right chamber 40c that are the cooling chambers are When the temperature is higher than the second determination high temperature value (for example, 6 ° C.), the cooling capacity of the cooling chamber seems to be insufficient. Therefore, the external fan 62f is rotated at full speed, and the heat dissipation amount of the external heat exchanger 76 is reduced. By increasing the heat pump operation, the evaporation amount of the evaporators 65a and 65c is increased, and the cooling capacity of the cooling chamber is increased. Further, the internal temperature of the middle chamber 40b that is the heating chamber is higher than the second determination high temperature value, and the internal temperature of one of the left chamber 40a and the right chamber 40c that is the cooling chamber is the second determination high temperature. If the other internal temperature is lower than the second determined low temperature value (for example, 0 ° C.), the external fan 62f is rotated at a medium speed or a low speed to achieve an appropriate condensation temperature and cooling capacity. Perform heat pump operation. In addition, the inside temperature of the middle chamber 40b which is the heating chamber is lower than the second determination low temperature value (for example, 45 ° C.), and the inside temperature of the left chamber 40a and the right chamber 40c which are the cooling chambers is the second temperature. If the temperature is higher than the determined high temperature value or lower than the second determined low temperature value, the heating capacity of the middle chamber 40b is insufficient, so the external fan 62f is stopped and the external heat exchanger 76 is stopped. The heat pump operation for increasing the heating capacity of the inner chamber 40b by increasing the condensation temperature of the heating heat exchanger 66b is performed by suppressing the amount of heat released to natural heat. In this case, the amount of heat released from the heating heat exchanger 66b may be increased by increasing the rotational speed of the internal fan 65f.

また、ＨＣＣモードにおいても、前述のように加熱室の庫内温度が前記第２の判定高温度値（例えば５５℃）より高く、冷却室２室の庫内温度が前記第２の判定高温度値（例えば６℃）より高い場合には、冷却室の冷却能力が不足気味であるので、庫外ファン６２ｆを全速で回転させ、庫外熱交換器７６の放熱量を増やすことにより、冷却室の冷却能力を増加させるヒートポンプ運転を行う。また、加熱室の庫内温度が前記第2の判定高温度値より高く、冷却室の一方の庫内温度が前記第2の判定高温度値より高く、他方の庫内温度が前記第2の判定低温度値（例えば０℃）より低い場合には、庫外ファン６２ｆを中速または低速で回転させ、適宜な凝縮温度と冷却能力でヒートポンプ運転を行う。また、加熱室の庫内温度が前記第2の判定低温度値（例えば４５℃）より低く、冷却室の庫内温度が、前記第2の判定高温度値より高いかもしくは前記第2の判定低温度値より低い場合には、加熱室の加熱能力が不足しているので、庫外ファン６２ｆを停止させ、庫外熱交換器７６の放熱量を抑制することで、加熱熱交換器６６ｂの凝縮温度を上昇させて加熱室の加熱能力を増加させるヒートポンプ運転を行う。
また、２室を加熱するＨＨＣモードにおいては、加熱室である左室４０ａ、中室４０ｂの庫内温度が前記第2の判定高温度値（例えば５５℃）より高く、冷却室である右室４０ｃの庫内温度が前記第2の判定高温度値（例えば６℃）より高い場合には、冷却室の冷却能力が不足気味であるので、庫外ファン６２ｆを全速で回転させ、庫外熱交換器７６の放熱量を増やすことにより、蒸発器６５ｃの蒸発量を増やし、冷却室の冷却能力を増加させる。また、加熱室である左室４０ａ、中室４０ｂの一方の庫内温度が前記第2の判定高温度値より高く、他方の庫内温度が第2の判定低温度値より低い場合であって、冷却室である右室４０ｃの庫内温度が前記第2 の判定高温度値より高い場合には、一方の加熱室の加熱能力が不足しているので、庫外ファン６２ｆを停止させ、庫外熱交換器７６の放熱量を微量にすることで、加熱熱交換器６６ａ、６６ｂの凝縮温度を上昇させて加熱室の加熱能力を増加させる。また、加熱室の庫内温度が２室ともに前記第2の判定低温度値（例えば４５℃）より低く、冷却室である右室４０ｃの庫内温度が前記第2の判定高温度値より高いかもしくは前記第2の判定低温度値（例えば０℃）より低い場合には、中室４０ａ，４０ｂの加熱能力が不足しているので、庫外ファン６２ｆを停止させ、庫外熱交換器７６の放熱量を微量にすることで、加熱熱交換器６６ｂの凝縮温度を上昇させて中室４０ａ，４０ｂの加熱能力を増加させる。 Also in the HCC mode, as described above, the inside temperature of the heating chamber is higher than the second determined high temperature value (for example, 55 ° C.), and the inside temperature of the two cooling chambers is equal to the second determined high temperature. When the temperature value is higher than 6 ° C. (for example, 6 ° C.), the cooling capacity of the cooling chamber is insufficient. Therefore, by rotating the external fan 62f at full speed and increasing the heat radiation amount of the external heat exchanger 76, A heat pump operation is performed to increase the cooling capacity of the cooling chamber. Further, the internal temperature of the heating chamber is higher than the second determination high temperature value, the internal temperature of one of the cooling chambers is higher than the second determination high temperature value, and the other internal temperature is the second determination high temperature value. When the temperature is lower than the determined low temperature value (for example, 0 ° C.), the external fan 62f is rotated at a medium speed or a low speed, and a heat pump operation is performed with an appropriate condensation temperature and cooling capacity. Further, the internal temperature of the heating chamber is lower than the second determined low temperature value (for example, 45 ° C.), and the internal temperature of the cooling chamber is higher than the second determined high temperature value or the second determined temperature value. When the temperature is lower than the determined low temperature value, the heating chamber has insufficient heating capability, so the outside fan 62f is stopped and the amount of heat released from the outside heat exchanger 76 is suppressed, whereby the heating heat exchanger 66b. The heat pump is operated to increase the heating capacity of the heating chamber by increasing the condensing temperature.
In the HHC mode in which the two chambers are heated, the internal temperature of the left chamber 40a and the middle chamber 40b that are heating chambers is higher than the second determination high temperature value (for example, 55 ° C.), and the right chamber that is the cooling chamber When the internal temperature of 40c is higher than the second judgment high temperature value (for example, 6 ° C), the cooling capacity of the cooling chamber is insufficient, so the external fan 62f is rotated at full speed, By increasing the heat radiation amount of the heat exchanger 76, the evaporation amount of the evaporator 65c is increased and the cooling capacity of the cooling chamber is increased. In addition, the inside temperature of one of the left chamber 40a and the middle chamber 40b, which are heating chambers, is higher than the second judgment high temperature value, and the other inside temperature is lower than the second judgment low temperature value. When the internal temperature of the right chamber 40c, which is the cooling chamber, is higher than the second determination high temperature value, the heating capacity of one heating chamber is insufficient, so the external fan 62f is stopped, By reducing the amount of heat released from the external heat exchanger 76, the condensation temperature of the heating heat exchangers 66a and 66b is increased to increase the heating capacity of the heating chamber. Moreover, the chamber internal temperature of the heating chamber is lower than the second determination low temperature value (for example, 45 ° C.), and the internal temperature of the right chamber 40c, which is a cooling chamber, is higher than the second determination high temperature value. Alternatively, when the temperature is lower than the second determination low temperature value (for example, 0 ° C.), the heating capacity of the middle chambers 40a and 40b is insufficient, so the external fan 62f is stopped and the external heat exchanger By making the heat release amount 76 small, the condensing temperature of the heating heat exchanger 66b is raised and the heating capacity of the middle chambers 40a and 40b is increased.

このように、庫内温度センサＴａ，Ｔｂ，Ｔｃにより検出される庫内温度に基づいて庫外ファン６２ｆの回転数を制御して加熱熱交換器と接続された庫外熱交換器７６からの放熱量を可変制御することにより、加熱運転する商品収納庫の庫内温度が低い場合には、前記庫外ファン６２ｆを減速または停止させて庫内の加熱熱交換器６６ａ,６６ｂの凝縮温度を上げて加熱効率を向上させ、加熱運転する商品収納庫の庫内温度が高く、かつ、冷却運転する商品収納庫の庫内温度が高い場合には、前記庫外ファン６２ｆを加速させて庫内の蒸発器の冷却能力を向上させるので、冷却加熱運転全体として、熱効率的に有利なヒートポンプ運転時間が増加し、ヒータによる加熱単独運転および庫外の凝縮器で放熱する冷却単独運転の時間が減少をするので、消費電力を低減することができる。 In this way, from the outside heat exchanger 76 connected to the heating heat exchanger by controlling the number of rotations of the outside fan 62f based on the inside temperature detected by the inside temperature sensors Ta, Tb, Tc. By variably controlling the amount of heat released, if the internal temperature of the product storage to be heated is low, the external fan 62f is decelerated or stopped to condense the heat heat exchangers 66a and 66b in the internal storage When the inside temperature of the product storage to be heated is high and the inside temperature of the product storage to be cooled is high, the outside fan 62f is accelerated to reduce the heating efficiency. The cooling capacity of the internal evaporator is improved, so that the heat pump operation time, which is advantageous in terms of heat efficiency, increases as a whole in the cooling and heating operation, and the time for the single heating operation by the heater and the single cooling operation in which heat is dissipated by the condenser outside the refrigerator is increased. But Small to be Runode, it is possible to reduce the power consumption.

以上のように、本発明に係る自動販売機は、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するのに適している。 As described above, the vending machine according to the present invention is suitable for cooling or heating a product such as a beverage in a container such as a can, a bottle, a pack, or a plastic bottle in a refrigerant circuit.

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. ＣＣＣモードの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 of CCC mode. ＨＣＣモードの冷媒の流れを示す回路図であり、（ａ）はヒートポンプ運転時、（ｂ）は冷却単独運転時を示す。It is a circuit diagram which shows the flow of the refrigerant | coolant of HCC mode, (a) shows the time of heat pump operation, (b) shows the time of cooling single operation. ＨＨＣモードの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 of HHC mode. 実施例に係る自動販売機の制御のフローチャートである。It is a flowchart of control of the vending machine which concerns on an Example. 実施例に係る制御の動作表である。It is the operation | movement table | surface of the control which concerns on an Example.

符号の説明Explanation of symbols

１０本体キャビネット
２０外扉
３０内扉
４０ａ、４０ｂ、４０ｃ商品収納庫（左室、中室、右室）
６０冷却／加熱ユニット
６１圧縮機
６２凝縮器
６２ｆ庫外ファン
６３膨張弁（膨張手段）
６５ａ、６５ｂ、６５ｃ蒸発器
６８ｂ、６８ｃ電磁弁
８０ｂ、８０ｃ加熱ヒータ
９０制御装置
９１Ｈ／Ｃ設定モード選択ＳＷ
Ｔａ、Ｔｂ、Ｔｃ庫内温度センサ
Ｔｏ周温センサ

10 Main body cabinet 20 Outer door 30 Inner door 40a, 40b, 40c Product storage (left room, middle room, right room)
60 Cooling / Heating Unit 61 Compressor 62 Condenser 62f External Fan 63 Expansion Valve (Expansion Means)
65a, 65b, 65c Evaporator 68b, 68c Solenoid valve 80b, 80c Heater 90 Controller 91 H / C setting mode selection SW
Ta, Tb, Tc Internal temperature sensor To Ambient temperature sensor

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、庫外に設け冷媒を凝縮する凝縮器と、この凝縮器の出口に接続された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、庫内に設け冷媒を蒸発する複数の蒸発器と、にて冷却循環回路を構成し、
前記圧縮機と、前記蒸発器とともに商品収納庫に配設された加熱熱交換器と、回転数が可変の庫外ファンと、この庫外ファンからの送風により放熱する庫外熱交換器と、圧力調整手段と、前記分配器と、前記蒸発器と、にて加熱冷却循環回路を構成するとともに、庫内温度を検知する庫内温度検知手段と、これらを制御する制御手段を有し、
当該制御手段は、庫内温度検知手段により検知した温度と、所定のサーモ運転開始温度およびサーモ運転停止温度との比較により庫内の冷却加熱を開始もしくは停止するサーモサイクル運転を行う自動販売機において、
前記サーモ運転開始温度およびサーモ運転停止温度の温度範囲内の値であって第2の判定低温度値、第2の判定高温度値を設け、加熱運転する商品収納庫が第2の判定低温度値よりも低い場合には、前記庫外ファンを減速または停止させて前記庫外熱交換器の放熱量を減少させ、加熱運転する商品収納庫が第2の判定高温度値よりも高く、かつ、冷却運転する商品収納庫が第2の判定高温度値よりも高い場合には、前記庫外ファンを加速させて前記庫外熱交換器の放熱量を増加させ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 that compresses the refrigerant, a condenser that is provided outside the refrigerator and condenses the refrigerant, an expansion unit that expands the refrigerant connected to an outlet of the condenser, a distributor that distributes the refrigerant expanded by the expansion unit, A cooling circulation circuit is configured with a plurality of evaporators provided in the chamber for evaporating the refrigerant,
Said compressor, said evaporator with product storage disposed in the heating heat exchanger, and the external fan speed is variable, and the outside-compartment heat exchanger for radiating the air blowing from the external fan, The pressure adjusting means, the distributor, and the evaporator constitute a heating / cooling circulation circuit, and have an internal temperature detecting means for detecting the internal temperature, and a control means for controlling these,
In the vending machine which performs the thermo cycle operation which starts or stops the cooling heating in the chamber by comparing the temperature detected by the chamber temperature detecting unit with a predetermined thermo operation start temperature and a thermo operation stop temperature. ,
A value that falls within the temperature range of the thermo-operation start temperature and the thermo-operation stop temperature and has a second determination low temperature value and a second determination high temperature value, and the product storage that performs the heating operation has a second determination low temperature. If lower than the value, decelerate or stop the external fan to reduce the heat dissipation amount of the external heat exchanger, the product storage to be heated is higher than the second determination high temperature value, and The vending machine characterized in that when the product storage to be cooled is higher than the second determination high temperature value, the outside fan is accelerated to increase the heat radiation amount of the outside heat exchanger. .