JP5176759B2

JP5176759B2 - vending machine

Info

Publication number: JP5176759B2
Application number: JP2008197820A
Authority: JP
Inventors: 賢哲安嶋; 敏章土屋; 孝博三本; 毅松下; 浩司滝口; 雄平山上; 真石田; 尚紀井下
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 2008-07-31
Filing date: 2008-07-31
Publication date: 2013-04-03
Anticipated expiration: 2028-07-31
Also published as: JP2010033520A

Description

本発明は自動販売機、特に、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, and more particularly to a vending machine that cools or heats a product such as a beverage in a container such as a can, a bottle, a pack, or a plastic bottle for sale.

従来、自動販売機は、冷媒を圧縮する圧縮機と、圧縮された冷媒（高温高圧）を凝縮させる庫外凝縮器と、凝縮された冷媒（中温高圧）を膨張させる膨張手段と、膨張した冷媒（低温低圧）を蒸発させる庫内熱交換器（蒸発器に同じ）と、これらを順次連結して蒸発した冷媒（中温低圧）を圧縮機に戻す冷凍サイクルを有し、商品を収納する各商品収納庫内に庫内蒸発器を設置して、商品を冷却していた。
また、庫内熱交換器に高圧高温冷媒（ホットガスに同じ）を流して、温熱を放出させて（凝縮器と機能させて）商品収納庫内を加熱する「ヒートポンプ運転」を実行する発明が開示されている（例えば、特許文献１参照）。 Conventionally, a vending machine includes a compressor that compresses a refrigerant, an external condenser that condenses the compressed refrigerant (high temperature and high pressure), an expansion means that expands the condensed refrigerant (medium temperature and high pressure), and the expanded refrigerant. Each product that stores products with an internal heat exchanger that evaporates (low temperature and low pressure) (same as the evaporator) and a refrigeration cycle that connects these components in sequence to return the evaporated refrigerant (medium temperature and low pressure) to the compressor An in-compartment evaporator was installed in the storage to cool the product.
Also, an invention for performing a “heat pump operation” in which a high-pressure high-temperature refrigerant (same as hot gas) is allowed to flow through the internal heat exchanger to release the heat (function as a condenser) to heat the inside of the product storage. It is disclosed (for example, see Patent Document 1).

特開２００２−２９８２１０号公報（第３−４頁、図１）JP 2002-298210 A (page 3-4, FIG. 1)

しかしながら、前記特許文献１に開示された発明は、加熱しようとする商品収納庫（庫内熱交換器）に高温高圧冷媒を供給し、これを通過した冷媒を膨張して、冷却しようとする商品収納庫（庫内熱交換器）に低温低圧冷媒を供給するものであるため、以下のような問題があった。
すなわち、加熱しようとする商品収納庫の数（庫内熱交換器の負荷に同じ）が、冷却しようとする商品収納庫の数（庫内熱交換器の負担に同じ）よりも大きい場合、冷却しようとする商品収納庫に十分に冷熱が放出されない（低温低圧冷媒が十分な温熱を吸収しないに同じ）ため、液状態の冷媒が圧縮機に戻ることがあった。そうすると、圧縮機の吐出冷媒温度が低下し、加熱能力が低下することになる。さらに、加熱能力の低下を補おうとすると、圧縮機の運転時間が延長され、消費電力が増加していた。 However, the invention disclosed in Patent Document 1 supplies a high-temperature and high-pressure refrigerant to a product storage (internal storage heat exchanger) to be heated, expands the refrigerant that has passed through this, and then intends to cool the product. Since the low-temperature and low-pressure refrigerant is supplied to the storage (the internal heat exchanger), there are the following problems.
That is, if the number of product storage boxes to be heated (same as the load on the internal heat exchanger) is larger than the number of product storage boxes to be cooled (same as the load on the internal heat exchanger), cooling Since the cold energy is not sufficiently released to the commodity storage to be attempted (same as the low-temperature and low-pressure refrigerant does not absorb sufficient heat), the liquid refrigerant may return to the compressor. If it does so, the discharge refrigerant | coolant temperature of a compressor will fall and a heating capability will fall. Furthermore, if it was going to compensate for the fall of a heating capability, the operation time of the compressor was extended and the power consumption increased.

本発明は上記問題を解決するものであって、特別の加熱手段を設置することなく、圧縮機に戻る直前の冷媒を加熱することができる自動販売機を提供することを目的とする。 This invention solves the said problem, Comprising: It aims at providing the vending machine which can heat the refrigerant | coolant just before returning to a compressor, without installing a special heating means.

（１）本発明に係る自動販売機（請求項１）は、断熱材によって囲まれ一面に開口部を具備する筐体と、
前記開口部を開閉する断熱扉と、
前記筐体内に配置された仕切板によって仕切られた、左室、中室および右室と、
該左室、中室および右室にそれぞれ配置され、その内部の空気と熱交換をする左室熱交換器、中室熱交換器および右室熱交換器と、
冷媒を圧縮する圧縮機と、
供給された冷媒と外気との間で熱交換可能、且つ、相互に熱交換可能なガスクーラおよび庫外熱交換器と、
を有し、
前記圧縮機において圧縮された冷媒が、まず前記ガスクーラを通過して前記膨張手段を通過した後、前記左室熱交換器、中室熱交換器および右室熱交換器を通過した後、前記圧縮機に戻る全室冷却運転モードと、
前記圧縮機において圧縮された冷媒が、まず前記左室熱交換器および前記中室熱交換器の両方を通過し、前記庫外熱交換器、前記膨張手段、および前記右室熱交換器を順次通過した後、前記ガスクーラを経由して前記圧縮機に戻る２室加熱運転モードと、
または、前記圧縮機において圧縮された冷媒が、まず前記左室熱交換器を通過し、前記庫外熱交換器、前記膨張手段、前記中室熱交換器および前記右室熱交換器を順次通過した後、前記ガスクーラを経由して前記圧縮機に戻る１室加熱運転モードと、
または、前記圧縮機において圧縮された冷媒が、まず前記中室熱交換器を通過し、前記庫外熱交換器、前記膨張手段、前記左室熱交換器および前記右室熱交換器を順次通過した後、前記ガスクーラを経由して前記圧縮機に戻る１室加熱運転モードと、
を実行することを特徴とする。 (1) A vending machine according to the present invention (Claim 1) includes a casing surrounded by a heat insulating material and having an opening on one surface thereof;
A heat insulating door that opens and closes the opening;
The left chamber, the middle chamber, and the right chamber, which are partitioned by a partition plate disposed in the housing,
A left chamber heat exchanger, a middle chamber heat exchanger and a right chamber heat exchanger which are arranged in the left chamber, the middle chamber and the right chamber, respectively, and exchange heat with the air inside the left chamber,
A compressor for compressing the refrigerant;
A gas cooler and an external heat exchanger capable of exchanging heat between the supplied refrigerant and the outside air and mutually exchanging heat;
Have
The refrigerant compressed in the compressor first passes through the gas cooler and then through the expansion means, and then passes through the left chamber heat exchanger, the middle chamber heat exchanger, and the right chamber heat exchanger, and then the compression. All room cooling operation mode to return to the machine,
The refrigerant compressed in the compressor first passes through both the left chamber heat exchanger and the middle chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, and the right chamber heat exchanger. A two-chamber heating operation mode after passing through and returning to the compressor via the gas cooler;
Alternatively, the refrigerant compressed in the compressor first passes through the left chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, the middle chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the gas cooler,
Alternatively, the refrigerant compressed in the compressor first passes through the middle chamber heat exchanger, and then sequentially passes through the external heat exchanger, the expansion means, the left chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the gas cooler,
It is characterized by performing.

（２）本発明に係る自動販売機（請求項２）は、前記（１）において、前記ガスクーラが、複数枚のガスクーラ放熱板と、該ガスクーラ放熱板を千鳥状に貫通するガスクーラ伝熱管と、を具備し、
前記庫外熱交換器が、複数枚の庫外放熱板と、該庫外放熱板を千鳥状に貫通する庫外伝熱管と、を具備し、
前記ガスクーラ放熱板と前記庫外放熱板とが、接合または一体的に形成されてなることを特徴とする。 (2) In the vending machine according to the present invention (Claim 2), in (1), the gas cooler includes a plurality of gas cooler heat sinks, and gas cooler heat transfer tubes that pass through the gas cooler heat sinks in a zigzag manner. Comprising
The external heat exchanger comprises a plurality of external heat dissipation plates, and external heat transfer tubes that penetrate the external heat dissipation plates in a staggered manner,
The gas cooler heat sink and the external heat sink are joined or integrally formed.

（３）本発明に係る自動販売機（請求項３）は、断熱材によって囲まれ一面に開口部を具備する筐体と、
前記開口部を開閉する断熱扉と、
前記筐体内に配置された仕切板によって仕切られた、左室、中室および右室と、
該左室、中室および右室にそれぞれ配置され、その内部の空気と熱交換をする左室熱交換器、中室熱交換器および右室熱交換器と、
冷媒を圧縮する圧縮機と、
供給された冷媒と外気との間で熱交換可能、且つ、相互に熱交換可能なガスクーラ、庫外熱交換器および戻り熱交換器と、
供給された冷媒を膨張させる膨張手段と、
を有し、
前記圧縮機において圧縮された冷媒が、まず前記ガスクーラを通過して前記膨張手段を通過した後、前記左室熱交換器、中室熱交換器および右室熱交換器を通過した後、前記戻り熱交換器を経由して前記圧縮機に戻る全室冷却運転モードと、
前記圧縮機において圧縮された冷媒が、まず前記左室熱交換器および前記中室熱交換器の両方を通過し、前記庫外熱交換器、前記膨張手段、および前記右室熱交換器を順次通過した後、前記戻り熱交換器を経由して前記圧縮機に戻る２室加熱運転モードと、
または、前記圧縮機において圧縮された冷媒が、まず前記左室熱交換器を通過し、前記庫外熱交換器、前記膨張手段、前記中室熱交換器および前記右室熱交換器を順次通過した後、前記戻り熱交換器を経由して前記圧縮機に戻る１室加熱運転モードと、
または、前記圧縮機において圧縮された冷媒が、まず前記中室熱交換器を通過し、前記庫外熱交換器、前記膨張手段、前記左室熱交換器および前記右室熱交換器を順次通過した後、前記戻り熱交換器を経由して前記圧縮機に戻る１室加熱運転モードと、
を実行することを特徴とする。 (3) A vending machine according to the present invention (Claim 3) includes a housing surrounded by a heat insulating material and having an opening on one surface;
A heat insulating door that opens and closes the opening;
The left chamber, the middle chamber, and the right chamber, which are partitioned by a partition plate disposed in the housing,
A left chamber heat exchanger, a middle chamber heat exchanger and a right chamber heat exchanger which are arranged in the left chamber, the middle chamber and the right chamber, respectively, and exchange heat with the air inside the left chamber,
A compressor for compressing the refrigerant;
A gas cooler, an external heat exchanger and a return heat exchanger capable of exchanging heat between the supplied refrigerant and the outside air and mutually exchanging heat;
Expansion means for expanding the supplied refrigerant;
Have
The refrigerant compressed in the compressor first passes through the gas cooler, passes through the expansion means, passes through the left ventricular heat exchanger, the middle chamber heat exchanger, and the right ventricular heat exchanger, and then returns. All-chamber cooling operation mode returning to the compressor via a heat exchanger,
The refrigerant compressed in the compressor first passes through both the left chamber heat exchanger and the middle chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, and the right chamber heat exchanger. A two-chamber heating operation mode after passing through and returning to the compressor via the return heat exchanger;
Alternatively, the refrigerant compressed in the compressor first passes through the left chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, the middle chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the return heat exchanger,
Alternatively, the refrigerant compressed in the compressor first passes through the middle chamber heat exchanger, and then sequentially passes through the external heat exchanger, the expansion means, the left chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the return heat exchanger,
It is characterized by performing.

（４）本発明に係る自動販売機（請求項４）は、前記（３）において、前記ガスクーラが、複数枚のガスクーラ放熱板と、該ガスクーラ放熱板を千鳥状に貫通するガスクーラ伝熱管と、を具備し、
前記庫外熱交換器が、複数枚の庫外放熱板と、該庫外放熱板を千鳥状に貫通する庫外伝熱管と、を具備し、
前記戻り熱交換器が、複数枚の戻り放熱板と、該戻り放熱板を千鳥状に貫通する戻り伝熱管と、を具備し、
前記ガスクーラ放熱板と前記庫外放熱板と前記戻り放熱板とが、接合または一体的に形成されてなることを特徴とする。 (4) In the vending machine according to the present invention (Claim 4), in (3), the gas cooler includes a plurality of gas cooler radiator plates, and gas cooler heat transfer tubes that penetrate the gas cooler radiator plates in a zigzag manner. Comprising
The external heat exchanger comprises a plurality of external heat dissipation plates, and external heat transfer tubes that penetrate the external heat dissipation plates in a staggered manner,
The return heat exchanger comprises a plurality of return heat radiating plates and return heat transfer tubes that pass through the return heat radiating plates in a staggered manner,
The gas cooler heat sink, the outside heat sink, and the return heat sink are joined or integrally formed.

（５）本発明に係る自動販売機（請求項５）は、断熱材によって囲まれ一面に開口部を具備する筐体と、
前記開口部を開閉する断熱扉と、
前記筐体内に配置された仕切板によって仕切られた、左室、中室および右室と、
該左室、中室および右室にそれぞれ配置され、その内部の空気と熱交換をする左室熱交換器、中室熱交換器および右室熱交換器と、
冷媒を圧縮する圧縮機と、
供給された冷媒と外気との間で熱交換可能、且つ、相互に熱交換可能なガスクーラ、庫外熱交換器および戻り熱交換器と、
供給された冷媒を膨張させる膨張手段と、
前記庫外熱交換器を通過した直後の冷媒が供給される内部高圧側配管と、前記圧縮機に戻る直前の冷媒が供給される内部低圧側配管とを具備する内部熱交換器と、
を有し、
前記圧縮機において圧縮された冷媒が、まず前記ガスクーラを通過して前記膨張手段を通過した後、前記左室熱交換器、中室熱交換器および右室熱交換器を通過した後、前記戻り熱交換器を経由して前記圧縮機に戻る全室冷却運転モードと、
前記圧縮機において圧縮された冷媒が、まず前記左室熱交換器および前記中室熱交換器の両方を通過し、前記庫外熱交換器、前記内部高圧側配管、前記膨張手段、および前記右室熱交換器を順次通過した後、前記内部低圧側配管を経由して前記圧縮機に戻る２室加熱運転モードと、
または、前記圧縮機において圧縮された冷媒が、まず前記左室熱交換器を通過し、前記庫外熱交換器、前記内部高圧側配管、前記膨張手段、前記中室熱交換器および前記右室熱交換器を順次通過した後、前記内部低圧側配管を経由して前記圧縮機に戻る１室加熱運転モードと、
または、前記圧縮機において圧縮された冷媒が、まず前記中室熱交換器を通過し、前記庫外熱交換器、前記内部高圧側配管、前記膨張手段、前記左室熱交換器および前記右室熱交換器を順次通過した後、前記内部低圧側配管を経由して前記圧縮機に戻る１室加熱運転モードと、
を実行することを特徴とする。 (5) A vending machine according to the present invention (Claim 5) includes a housing surrounded by a heat insulating material and provided with an opening on one surface;
A heat insulating door that opens and closes the opening;
The left chamber, the middle chamber, and the right chamber, which are partitioned by a partition plate disposed in the housing,
A left chamber heat exchanger, a middle chamber heat exchanger and a right chamber heat exchanger which are arranged in the left chamber, the middle chamber and the right chamber, respectively, and exchange heat with the air inside the left chamber,
A compressor for compressing the refrigerant;
A gas cooler, an external heat exchanger and a return heat exchanger capable of exchanging heat between the supplied refrigerant and the outside air and mutually exchanging heat;
Expansion means for expanding the supplied refrigerant;
An internal heat exchanger comprising an internal high-pressure side pipe to which the refrigerant immediately after passing through the external heat exchanger is supplied, and an internal low-pressure side pipe to which the refrigerant just before returning to the compressor is supplied;
Have
The refrigerant compressed in the compressor first passes through the gas cooler, passes through the expansion means, passes through the left ventricular heat exchanger, the middle chamber heat exchanger, and the right ventricular heat exchanger, and then returns. All-chamber cooling operation mode returning to the compressor via a heat exchanger,
The refrigerant compressed in the compressor first passes through both the left chamber heat exchanger and the middle chamber heat exchanger, and the external heat exchanger, the internal high-pressure side pipe, the expansion means, and the right A two-chamber heating operation mode that sequentially passes through the heat exchanger and then returns to the compressor via the internal low-pressure side pipe;
Alternatively, the refrigerant compressed in the compressor first passes through the left ventricular heat exchanger, and the external heat exchanger, the internal high-pressure side pipe, the expansion means, the middle chamber heat exchanger, and the right chamber A one-chamber heating operation mode that sequentially passes through the heat exchanger and then returns to the compressor via the internal low-pressure side pipe;
Alternatively, the refrigerant compressed in the compressor first passes through the middle chamber heat exchanger, and the external heat exchanger, the internal high-pressure side pipe, the expansion means, the left chamber heat exchanger, and the right chamber A one-chamber heating operation mode that sequentially passes through the heat exchanger and then returns to the compressor via the internal low-pressure side pipe;
It is characterized by performing.

（ｉ）本発明の請求項１および請求項２に係る自動販売機は、相互に熱交換可能なガスクーラおよび庫外熱交換器を有するから、２室加熱運転モードおよび１室加熱運転モードにおいて、圧縮機に戻る直前の冷媒は、ガスクーラに供給され、庫外熱交換器を通過する冷媒の保有する温熱が受け渡されるから、圧縮機に戻る冷媒の温度が上昇する。したがって、液状態の冷媒が圧縮機に吸い込まれることが防止され、加熱能力が維持される。このとき、膨張手段において膨張する前の冷媒が保有する温熱が、圧縮機において圧縮される前の冷媒に受け渡されるだけであるから、特別の加熱手段を設置して、冷媒加熱のための特別のエネルギを供給する必要がないため、製造コストの上昇や消費電力の増加が抑えられる。 (I) Since the vending machine according to claims 1 and 2 of the present invention has a gas cooler and an external heat exchanger that can exchange heat with each other, in the two-chamber heating operation mode and the one-chamber heating operation mode, The refrigerant immediately before returning to the compressor is supplied to the gas cooler, and the temperature held by the refrigerant passing through the external heat exchanger is transferred, so that the temperature of the refrigerant returning to the compressor rises. Therefore, the refrigerant in the liquid state is prevented from being sucked into the compressor, and the heating capacity is maintained. At this time, since the warm heat possessed by the refrigerant before being expanded in the expansion means is only transferred to the refrigerant before being compressed in the compressor, a special heating means is installed to specially heat the refrigerant. Since it is not necessary to supply this energy, an increase in manufacturing cost and an increase in power consumption can be suppressed.

（ｉｉ）本発明の請求項３および請求項４に係る自動販売機は、相互に熱交換可能なガスクーラ、庫外熱交換器および戻り熱交換器を有するから、２室加熱運転モードおよび１室加熱運転モードにおいて、圧縮機に戻る直前の冷媒は、戻り熱交換器に供給され、庫外熱交換器を通過する冷媒の保有する温熱が受け渡されるから、圧縮機に戻る冷媒の温度が上昇する。また、全室冷却循環回路において、圧縮機に戻る直前の冷媒は、戻り熱交換器に供給され、ガスクーラを通過する冷媒の保有する温熱が受け渡されるから、圧縮機に戻る冷媒の温度が上昇する。したがって、液状態の冷媒が圧縮機に吸い込まれることが防止され、加熱能力が維持される。このとき、膨張手段において膨張する前の冷媒が保有する温熱が、圧縮機において圧縮される前の冷媒に受け渡されるだけであるから、特別の加熱手段を設置して、冷媒加熱のための特別のエネルギを供給する必要がないため、製造コストの上昇や消費電力の増加が抑えられる。 (Ii) Since the vending machine according to claims 3 and 4 of the present invention has a gas cooler, an external heat exchanger, and a return heat exchanger that can exchange heat with each other, the two-chamber heating operation mode and the one-chamber In the heating operation mode, the refrigerant just before returning to the compressor is supplied to the return heat exchanger, and the temperature held by the refrigerant passing through the external heat exchanger is transferred, so the temperature of the refrigerant returning to the compressor rises. To do. Also, in the all-chamber cooling circuit, the refrigerant just before returning to the compressor is supplied to the return heat exchanger, and the heat held by the refrigerant passing through the gas cooler is transferred, so the temperature of the refrigerant returning to the compressor rises. To do. Therefore, the refrigerant in the liquid state is prevented from being sucked into the compressor, and the heating capacity is maintained. At this time, since the warm heat possessed by the refrigerant before being expanded in the expansion means is only transferred to the refrigerant before being compressed in the compressor, a special heating means is installed to specially heat the refrigerant. Since it is not necessary to supply this energy, an increase in manufacturing cost and an increase in power consumption can be suppressed.

（ｉｉｉ）本発明の請求項５に係る自動販売機は、内部高圧側配管と内部低圧側配管とを具備する内部熱交換器を有するから、２室加熱運転モードおよび１室加熱運転モードにおいて、圧縮機に戻る直前の冷媒は内部低圧側配管に供給され、内部高圧側配管を通過する冷媒の保有する温熱が受け渡されるから、圧縮機に戻る冷媒の温度が上昇する。したがって、液状態の冷媒が圧縮機に吸い込まれることが防止され、加熱能力が維持される。このとき、膨張手段において膨張する前の冷媒が保有する温熱が、圧縮機において圧縮される前の冷媒に受け渡されるだけであるから、特別の加熱手段を設置して、冷媒加熱のための特別のエネルギを供給する必要がないため、製造コストの上昇や消費電力の増加が抑えられる。 (Iii) Since the vending machine according to claim 5 of the present invention includes an internal heat exchanger having an internal high-pressure side pipe and an internal low-pressure side pipe, in the two-chamber heating operation mode and the one-chamber heating operation mode, The refrigerant immediately before returning to the compressor is supplied to the internal low-pressure side pipe, and the heat held by the refrigerant passing through the internal high-pressure side pipe is transferred, so that the temperature of the refrigerant returning to the compressor rises. Therefore, the refrigerant in the liquid state is prevented from being sucked into the compressor, and the heating capacity is maintained. At this time, since the warm heat possessed by the refrigerant before being expanded in the expansion means is only transferred to the refrigerant before being compressed in the compressor, a special heating means is installed to specially heat the refrigerant. Since it is not necessary to supply this energy, an increase in manufacturing cost and an increase in power consumption can be suppressed.

［実施の形態１］
（自動販売機）
図１〜図５は本発明の実施の形態１に係る自動販売機を説明するものであって、図１は模式的に示す正面視の断面図、図２は模式的に示す側面視の断面図、図３はこれに設置された冷凍回路の構成図、図４は冷媒の流れ方を示す冷凍回路構成図、図５は一部（ガスクーラおよび庫外熱交換器）を模式的に示す側面図である。図４において、冷媒の流れ方向矢印で、冷媒が流れる配管を実線で、冷媒が流れない配管を破線で、それぞれ示している。
図１および図２において、自動販売機１０００は、自動販売機１０００の本体のキャビネット２００と、キャビネット２００の内部で断熱材３００に包囲された商品収納庫４００と、商品Ｓを補充する時に商品収納庫４００を開閉する商品補充用扉４０４と、商品収納庫４００と外気を遮断するための内扉４０５と、自動販売機１０００の前扉４０６と、を有している。 [Embodiment 1]
(vending machine)
1 to 5 illustrate a vending machine according to Embodiment 1 of the present invention. FIG. 1 is a schematic sectional view in front view, and FIG. 2 is a schematic sectional view in side view. FIG. 3, FIG. 3 is a configuration diagram of a refrigeration circuit installed therein, FIG. 4 is a configuration diagram of a refrigeration circuit showing how refrigerant flows, and FIG. 5 is a side view schematically showing a part (gas cooler and external heat exchanger). FIG. In FIG. 4, a refrigerant flow direction arrow indicates a line through which the refrigerant flows, and a broken line indicates a pipe through which the refrigerant does not flow.
1 and 2, the vending machine 1000 includes a cabinet 200 of the main body of the vending machine 1000, a product storage box 400 surrounded by a heat insulating material 300 inside the cabinet 200, and a product storage when the product S is replenished. A product replenishing door 404 for opening and closing the storage 400, an internal door 405 for shutting off the product storage 400 and outside air, and a front door 406 of the vending machine 1000 are provided.

商品収納庫４００は仕切り板４０３ＬＭ、４０３ＭＲによって商品室（以下、「左室」と称す）４０Ｌ、商品室（以下、「中室」と称す）４０Ｍ、商品室（以下、「右室」と称す）４０Ｒに仕切られている。
なお、以下の説明において、左室４０Ｌ、中室４０Ｍおよび右室４０Ｒのそれぞれに配置される部材において、共通する内容を説明する場合には、それぞれをまとめてまたはそれぞれを個別に、部材名称を形容する「左室、中室、右室」や、符号の添え字「Ｌ、Ｍ、Ｒ」を省略する場合がある。 The product storage 400 is divided by partition plates 403LM and 403MR into a product room (hereinafter referred to as “left room”) 40L, a product room (hereinafter referred to as “middle room”) 40M, and a product room (hereinafter referred to as “right room”). ) It is partitioned by 40R.
In addition, in the following description, when explaining the common contents in the members arranged in each of the left chamber 40L, the middle chamber 40M, and the right chamber 40R, each is collectively or individually named. The description of “left chamber, middle chamber, right chamber” and the subscripts “L, M, R” may be omitted.

各商品収納庫４００には、商品Ｓを収納するための商品収納ラック４０７と、商品収納ラック４０７から自然落下した商品Ｓを取出すための商品取出し口４０９と、商品Ｓを商品取出し口４０９まで誘導する商品誘導板４０８とが設置され、商品誘導板４０８の下方が庫内部品収納室４１０となっている。また、庫内空気を商品収納ラック４０７を経由して庫内部品収納室４１０に循環させるための循環ダクト４２０が設置されている。 In each product storage 400, a product storage rack 407 for storing the product S, a product take-out port 409 for taking out the product S that has fallen naturally from the product storage rack 407, and the product S are guided to the product take-out port 409. The product guide plate 408 is installed, and the lower part of the product guide plate 408 is an internal component storage chamber 410. In addition, a circulation duct 420 is provided for circulating the internal air to the internal component storage chamber 410 via the commodity storage rack 407.

そして、庫内部品収納室４１０には、庫内空気を商品誘導板４０８（通気孔が設けられている）を通過して商品Ｓに衝突させる送風手段４３０と、送風手段４３０の下流側（循環ダクト４２０から遠い側）に庫内熱交換器４４０と、送風手段４３０および庫内熱交換器４４０を収納する送風ダクト４５０と、送風ダクト４５０に連通して空気を通す風胴４６０と、が設置されている。
さらに、商品収納庫４００の下方には、コンデンシングユニット４７０および庫外ファン４８１を収納するための機械室４８０と、電装品および制御手段を収納するための電装品収納室４９０とが配置されている。 In the internal component storage chamber 410, the blower 430 that causes the internal air to pass through the product guide plate 408 (provided with a vent hole) and collide with the product S, and the downstream side (circulation) of the blower 430. The internal heat exchanger 440, the air blowing unit 430 and the internal air heat exchanger 440, and the wind tunnel 460 that communicates with the air duct 450 and passes air are installed on the far side from the duct 420). Has been.
Further, a machine room 480 for housing the condensing unit 470 and the external fan 481 and an electrical equipment storage room 490 for storing electrical equipment and control means are disposed below the product storage 400. Yes.

（冷却用配管系）
図３において、自動販売機１０００が有する冷凍回路１０００ｓは、冷媒を圧縮する圧縮機１と、圧縮機１によって圧縮された冷媒（以下、「高温高圧冷媒」と称す）が選択的に供給され、これを冷却するガスクーラ２と、ガスクーラ２を通過した冷媒（以下、「中温高圧冷媒」と称す）が供給され、これに膨張する全室冷却用膨張手段（キャピラリに同じ）３と、全室冷却用膨張手段３Ｃにおいて膨張された冷媒（以下、「低温低圧冷媒」と称す）が分岐点４において分岐され、選択的に供給される、左室４０Ｌに配置された左室熱交換器５Ｌ、中室４０Ｍに配置された中室熱交換器５Ｍ、および右室４０Ｒに配置された右室熱交換器５Ｒと、左室熱交換器５Ｌ、中室熱交換器５Ｍまたは右室熱交換器５Ｒの何れかを通過した冷媒（以下、「中温低温冷媒」と称す）が供給されるアキュムレータ７とを有している。 (Cooling piping system)
In FIG. 3, the refrigeration circuit 1000 s included in the vending machine 1000 is selectively supplied with a compressor 1 that compresses the refrigerant and a refrigerant compressed by the compressor 1 (hereinafter referred to as “high-temperature and high-pressure refrigerant”). A gas cooler 2 that cools this, a refrigerant that passes through the gas cooler 2 (hereinafter referred to as “medium-temperature high-pressure refrigerant”), an expansion means for cooling all chambers (same as capillary) 3 that expands to this, and cooling all rooms The left chamber heat exchanger 5L disposed in the left chamber 40L, in which the refrigerant expanded in the expansion means 3C (hereinafter referred to as “low temperature and low pressure refrigerant”) is branched and selectively supplied at the branch point 4, The middle chamber heat exchanger 5M disposed in the chamber 40M, the right chamber heat exchanger 5R disposed in the right chamber 40R, the left chamber heat exchanger 5L, the middle chamber heat exchanger 5M, or the right chamber heat exchanger 5R. Refrigerant that has passed through either Referred to as medium-temperature low-temperature refrigerant ") has an accumulator 7 to be supplied.

そして、圧縮機１と、ガスクーラ２と、全室冷却用膨張手段３Ｃと、左室熱交換器５Ｌ、中室熱交換器５Ｍおよび右室熱交換器５Ｒと、アキュムレータ７と、圧縮機１と、が配管（以下、「冷却用配管系」と称す場合がある）によって順次連結されている。
なお、符号ｊの部材と符号ｋの部材とを連結する配管を符号ｊｋにて示し、配管ｊｋに設置された電磁弁（開閉弁に同じ）を符号ｊｋｖと、配管ｊｋに設置された逆止弁（逆流防止弁に同じ）を符号ｊｋｎと、配管ｊｋに設置されたストレーナを符号ｊｋｓとしている。例えば、ガスクーラ２と全室冷却用膨張手段３Ｃとは配管２３Ｃによって連結され、配管２３Ｃには、電磁弁２３Ｃｖと、逆止弁２３Ｃｎと、ストレーナ２３Ｃｓとが設置されている。 And the compressor 1, the gas cooler 2, the expansion means 3C for all-chamber cooling, the left chamber heat exchanger 5L, the middle chamber heat exchanger 5M and the right chamber heat exchanger 5R, the accumulator 7, and the compressor 1 Are sequentially connected by a pipe (hereinafter sometimes referred to as a “cooling pipe system”).
In addition, the pipe | tube which connects the member of the code | symbol j, and the member of the code | symbol k is shown by the code | symbol jk, the solenoid valve (same as an on-off valve) installed in the pipe jk is shown by the code | symbol jkv, and the non-return installed in the pipe jk The valve (same as the backflow prevention valve) is denoted by the symbol jkn, and the strainer installed in the pipe jk is denoted by the symbol jks. For example, the gas cooler 2 and the all-chamber cooling expansion means 3C are connected by a pipe 23C, and an electromagnetic valve 23Cv, a check valve 23Cn, and a strainer 23Cs are installed in the pipe 23C.

（加熱用配管系）
また、供給された冷媒（中温高圧冷媒に同じ）と外気との間で熱交換可能であって、ガスクーラ２との間で熱交換可能な庫外熱交換器８と、庫外熱交換器８を通過した冷媒を膨張させる加熱用膨張手段（キャピラリに同じ）３Ｈが設置されている。
そして、圧縮機１と左室熱交換器５Ｌとが、電磁弁１５Ｌｖが設置された配管１５Ｌによって連結され、左室熱交換器５Ｌと庫外熱交換器８とが逆止弁５８Ｌｎが設置された配管５８Ｌによって連結されている。同様に、圧縮機１と中室熱交換器５Ｍとが、電磁弁１５Ｍｖが設置された配管１５Ｍによって連結され、中室熱交換器５Ｍと庫外熱交換器８とが逆止弁５８Ｍｎが設置された配管５８Ｍによって連結されている。なお、配管５８Ｌと配管５８Ｍとは共通の配管５８に統合されている。
さらに、庫外熱交換器８と加熱用膨張手段３Ｈとは、ストレーナ８３Ｈｓが設置された配管８３Ｈによって連結され、加熱用膨張手段３Ｈの下流側と全室冷却用膨張手段３Ｃの下流側とは分岐点４の上流側において統合されている。 (Piping system for heating)
Also, an external heat exchanger 8 capable of exchanging heat between the supplied refrigerant (same as the medium temperature and high pressure refrigerant) and the outside air and exchanging heat with the gas cooler 2, and an external heat exchanger 8 The expansion means for heating (same as the capillary) 3H for expanding the refrigerant that has passed through is installed.
The compressor 1 and the left ventricular heat exchanger 5L are connected by a pipe 15L in which an electromagnetic valve 15Lv is installed, and the left ventricular heat exchanger 5L and the external heat exchanger 8 are installed with a check valve 58Ln. The pipes 58L are connected. Similarly, the compressor 1 and the middle chamber heat exchanger 5M are connected by a pipe 15M in which an electromagnetic valve 15Mv is installed, and the middle chamber heat exchanger 5M and the external heat exchanger 8 are installed with a check valve 58Mn. The pipes 58M are connected. The pipe 58L and the pipe 58M are integrated into a common pipe 58.
Further, the external heat exchanger 8 and the heating expansion means 3H are connected by a pipe 83H provided with a strainer 83Hs, and the downstream side of the heating expansion means 3H and the downstream side of the all-chamber cooling expansion means 3C are They are integrated on the upstream side of the branch point 4.

（戻りバイパス配管系）
左室熱交換器５Ｌとアキュムレータ７とを連結する配管５７Ｌと、中室熱交換器５Ｍとアキュムレータ７とを連結する配管５７Ｍと、右室熱交換器５Ｒとアキュムレータ７とを連結する配管５７Ｒと、は共通の配管５７に統合されている。そして、配管５７は分岐点６において、ガスクーラ２の下流側（配管２３ｃに同じ）に連通し、電磁弁６２ｖが設置された分岐管６２に分岐され、分岐点６の下流側に電磁弁６７ｖが設置されている。
さらに、電磁弁６７ｖとアキュムレータ７との間と、ガスクーラ２の上流側（配管１２に同じ）とが、電磁弁２７ｖが設置されて合流管２７によって連結されている。 (Return bypass piping system)
A pipe 57L that connects the left ventricular heat exchanger 5L and the accumulator 7, a pipe 57M that connects the middle chamber heat exchanger 5M and the accumulator 7, and a pipe 57R that connects the right ventricular heat exchanger 5R and the accumulator 7. Are integrated into a common pipe 57. The pipe 57 communicates with the downstream side of the gas cooler 2 (same as the pipe 23c) at the branch point 6 and branches into the branch pipe 62 provided with the electromagnetic valve 62v. The electromagnetic valve 67v is provided downstream of the branch point 6. is set up.
Further, the electromagnetic valve 27v is installed between the electromagnetic valve 67v and the accumulator 7, and the upstream side of the gas cooler 2 (same as the pipe 12) is connected by the junction pipe 27.

（全室冷却運転モード）
図４の（ａ）において、自動販売機１０００が全室冷却運転モード（ＣＣＣ運転モード）を実行する際の冷媒の流れは、圧縮機１によって圧縮された高温高圧冷媒が、配管１２（電磁弁１２ｖが開き、電磁弁１５Ｌｖ、１５Ｍｖが閉じている）を経由してガスクーラ２に流入し、全室冷却用膨張手段３Ｃにおいて膨張して低温低圧冷媒となって、左室熱交換器５Ｌ、中室熱交換器５Ｍおよび右室熱交換器５Ｒに流入する（電磁弁４５Ｌｖ、４５Ｍｖ、４５Ｒｖが開いている）。よって、左室４０Ｌ、中室４０Ｍおよび右室４０Ｒが、冷却される。
そして、中温低圧冷媒は配管５６に流れ込み、開いている電磁弁６７ｖを通過してアキュムレータ７に流入する。
このとき、電磁弁１５Ｌｖ、１５Ｍｖが閉じ、逆止弁５８Ｌｎ、５８Ｍｎが設置されているから、高温高圧冷媒や中温高圧冷媒が庫外熱交換器８や加熱用膨張手段３Ｈに流入することがない。また、電磁弁２７ｖ、６２ｖが閉じているから、高温高圧冷媒や中温高圧冷媒がアキュムレータ７に流入することがない。 (All rooms cooling operation mode)
In FIG. 4A, when the vending machine 1000 executes the all-chamber cooling operation mode (CCC operation mode), the high-temperature and high-pressure refrigerant compressed by the compressor 1 is connected to the pipe 12 (solenoid valve). 12v is opened and solenoid valves 15Lv and 15Mv are closed), and flows into the gas cooler 2 and expands in the all-chamber expansion means 3C to become a low-temperature and low-pressure refrigerant. It flows into the chamber heat exchanger 5M and the right chamber heat exchanger 5R (the electromagnetic valves 45Lv, 45Mv, and 45Rv are open). Therefore, the left chamber 40L, the middle chamber 40M, and the right chamber 40R are cooled.
Then, the medium temperature and low pressure refrigerant flows into the pipe 56, passes through the open electromagnetic valve 67v, and flows into the accumulator 7.
At this time, since the solenoid valves 15Lv and 15Mv are closed and the check valves 58Ln and 58Mn are installed, the high-temperature high-pressure refrigerant or the medium-temperature high-pressure refrigerant does not flow into the external heat exchanger 8 or the heating expansion means 3H. . Further, since the solenoid valves 27v and 62v are closed, the high-temperature and high-pressure refrigerant and the medium-temperature and high-pressure refrigerant do not flow into the accumulator 7.

（２室加熱運転モード）
図４の（ｂ）において、自動販売機１０００が２室加熱運転モード（ＨＨＣ運転モード）を実行する際の冷媒の流れは、圧縮機１によって圧縮された高温高圧冷媒が、配管１５Ｌ、１５Ｍ（電磁弁１２ｖが閉じ、電磁弁１５Ｌｖ、１５Ｍｖが開いて）を経由して、左室熱交換器５Ｌおよび中室熱交換器５Ｍに流入する。
その後、庫外熱交換器８および加熱用膨張手段３Ｈを経由して分岐点４に到達し、分岐点４において分岐されて配管４５Ｒ（電磁弁４５Ｒｖが開き、電磁弁４５Ｌｖ、４５Ｍｖが閉じている）を経由して右室熱交換器５Ｒに流入する。そして、配管５７Ｃに流入した冷媒（中温低圧冷媒）は、分岐点６において分岐され分岐管６２に流入し、ガスクーラ２を経由した後、アキュムレータ７に供給される。 (Two-chamber heating operation mode)
In FIG. 4B, when the vending machine 1000 executes the two-chamber heating operation mode (HHC operation mode), the high-temperature and high-pressure refrigerant compressed by the compressor 1 is connected to the pipes 15L and 15M ( The electromagnetic valve 12v is closed and the electromagnetic valves 15Lv and 15Mv are opened), and flows into the left chamber heat exchanger 5L and the middle chamber heat exchanger 5M.
After that, it reaches the branch point 4 via the external heat exchanger 8 and the heating expansion means 3H, branches at the branch point 4, and the pipe 45R (the electromagnetic valve 45Rv is opened and the electromagnetic valves 45Lv and 45Mv are closed). ) To the right ventricular heat exchanger 5R. Then, the refrigerant (medium-temperature low-pressure refrigerant) that has flowed into the pipe 57 </ b> C is branched at the branch point 6, flows into the branch pipe 62, passes through the gas cooler 2, and is then supplied to the accumulator 7.

そうすると、庫外熱交換器８とガスクーラ２との間で熱交換可能であるため、ガスクーラ２に流入した中温低圧冷媒は、庫外熱交換器８を通過する中温高圧冷媒が保有する温熱を受け取って温度が上昇し、さらに、アキュムレータ７において気液が分離され、気相状態で圧縮機１に吸引される。よって、圧縮機１の吐出温度が上昇し、左室４０Ｌおよび中室４０Ｍの加熱が確実になる。
このとき、電磁弁６７ｖが閉じて電磁弁６２ｖおよび電磁弁２７ｖが開いているから、中温低圧冷媒がアキュムレータ７に直接流入することがない。また、電磁弁１２ｖが閉じているから、高温高圧冷媒がガスクーラ２やアキュムレータ７に流入することがなく、電磁弁２３Ｃｖが閉じているから、低温低圧冷媒がガスクーラ２やアキュムレータ７に流入することがない。 Then, since heat exchange is possible between the external heat exchanger 8 and the gas cooler 2, the medium temperature and low pressure refrigerant flowing into the gas cooler 2 receives the heat held by the medium temperature and high pressure refrigerant passing through the external heat exchanger 8. Then, the temperature rises, and the gas-liquid is separated in the accumulator 7 and sucked into the compressor 1 in a gas phase state. Therefore, the discharge temperature of the compressor 1 rises, and heating of the left chamber 40L and the middle chamber 40M is ensured.
At this time, since the solenoid valve 67v is closed and the solenoid valve 62v and the solenoid valve 27v are open, the medium temperature and low pressure refrigerant does not flow directly into the accumulator 7. Moreover, since the solenoid valve 12v is closed, the high-temperature and high-pressure refrigerant does not flow into the gas cooler 2 and the accumulator 7, and since the solenoid valve 23Cv is closed, the low-temperature and low-pressure refrigerant can flow into the gas cooler 2 and the accumulator 7. Absent.

（ガスクーラおよび庫外熱交換器）
図５において、ガスクーラ２は複数枚のガスクーラ放熱板２ａとガスクーラ放熱板２ａを千鳥状に貫通するガスクーラ伝熱管２ｂとを具備し、庫外熱交換器８は複数枚の庫外放熱板８ａと、庫外放熱板８ａを千鳥状に貫通する庫外伝熱管８ｂとを具備している。このとき、ガスクーラ放熱板２ａと庫外放熱板８ａとは一体的に形成されて共通のフィンを呈し、かかる共通のフィンは、庫外ファン４８１が形成する吸込空気の風路内に配置されている。
また、ガスクーラ伝熱管２ｂの上側の端部には配管１２が、下側の端部には配管２３Ｃ（配管６２に同じ）が、それぞれ接続されている。また、庫外伝熱管８ｂの上側の端部には配管５８が、下側の端部には配管８３Ｈが、それぞれ接続されている。したがって、前記ＨＨＣ運転モードにおいて、庫外熱交換器８に流入した中温高圧冷媒の保有する温熱は、大気中に放出されると共に、共通のフィンを伝わってガスクーラ伝熱管２ｂに伝達され、これを通過する中温低圧冷媒に受け渡される。
なお、以上は、ガスクーラ２を通過した中温高圧冷媒が供給される全室冷却用膨張手段３Ｃと、左室熱交換器５Ｌまたは中室熱交換器５Ｍの一方または両方を通過した中温高圧冷媒が供給される加熱用膨張手段３Ｈと、が配置されているが、共通の膨張手段（例えば、電子膨張弁）にして、かかる膨張手段の直前において配管２３Ｃと配管８３Ｈとを統合してもよい。 (Gas cooler and external heat exchanger)
In FIG. 5, the gas cooler 2 includes a plurality of gas cooler heat radiating plates 2a and gas cooler heat transfer tubes 2b penetrating the gas cooler heat radiating plates 2a, and the external heat exchanger 8 includes a plurality of external heat radiating plates 8a. And the outside heat exchanger tube 8b which penetrates the outside heat sink 8a in a zigzag pattern. At this time, the gas cooler heat radiating plate 2a and the external heat radiating plate 8a are integrally formed to present a common fin, and the common fin is disposed in the air passage of the intake air formed by the external fan 481. Yes.
Further, the pipe 12 is connected to the upper end of the gas cooler heat transfer tube 2b, and the pipe 23C (same as the pipe 62) is connected to the lower end. A pipe 58 is connected to the upper end of the external heat transfer tube 8b, and a pipe 83H is connected to the lower end. Therefore, in the HHC operation mode, the heat held by the medium-temperature high-pressure refrigerant flowing into the external heat exchanger 8 is released into the atmosphere and is transmitted to the gas cooler heat transfer tube 2b through the common fin. Passed to the passing medium temperature and low pressure refrigerant.
In the above, the medium-temperature high-pressure refrigerant that has passed through one or both of the expansion chamber 3C for cooling the whole chamber supplied with the medium-temperature high-pressure refrigerant that has passed through the gas cooler 2, and the left-chamber heat exchanger 5L or the middle-chamber heat exchanger 5M. The heating expansion means 3H to be supplied is disposed, but the pipe 23C and the pipe 83H may be integrated immediately before the expansion means by using a common expansion means (for example, an electronic expansion valve).

（１室加熱運転モード）
自動販売機１０００が１室加熱運転モード（ＨＣＣ運転モードまたはＣＨＣ運転モード）を実行する際の冷媒の流れは、前記２室加熱運転モード（ＨＨＣ運転モード）における左室熱交換器５Ｌまたは中室熱交換器５Ｍの一方のみに高温高圧冷媒を供給し、左室熱交換器５Ｌまたは中室熱交換器５Ｍの他方のみに低温低圧冷媒を供給するものであるから、前記２室加熱運転モードにおける電磁弁の開閉操作によって実行されるから、説明を省略する。
そして、庫外熱交換器８とガスクーラ２との間で熱交換可能であるため、ガスクーラ２に流入した中温低圧冷媒は、庫外熱交換器８を通過する中温高圧冷媒が保有する温熱を受け取って温度が上昇し、さらに、アキュムレータ７において気液が分離され、気相状態で圧縮機１に吸引される。よって、圧縮機１の吐出温度が上昇し、左室４０Ｌまたは中室４０Ｍの一方の加熱が確実になる。 (One-chamber heating operation mode)
The refrigerant flow when the vending machine 1000 executes the one-chamber heating operation mode (HCC operation mode or CHC operation mode) is the same as that of the left chamber heat exchanger 5L or the middle chamber in the two-chamber heating operation mode (HHC operation mode). The high-temperature and high-pressure refrigerant is supplied to only one of the heat exchangers 5M, and the low-temperature and low-pressure refrigerant is supplied only to the other of the left chamber heat exchanger 5L or the middle chamber heat exchanger 5M. The description is omitted because it is executed by opening and closing the solenoid valve.
And since heat exchange is possible between the external heat exchanger 8 and the gas cooler 2, the medium temperature and low pressure refrigerant flowing into the gas cooler 2 receives the heat held by the medium temperature and high pressure refrigerant passing through the external heat exchanger 8. Then, the temperature rises, and the gas-liquid is separated in the accumulator 7 and sucked into the compressor 1 in a gas phase state. Therefore, the discharge temperature of the compressor 1 rises, and heating of one of the left chamber 40L or the middle chamber 40M is ensured.

［実施の形態２］
（自動販売機）
図６〜図８は本発明の実施の形態２に係る自動販売機を説明するものであって、図６はこれに設置された冷凍回路の構成図、図７は冷媒の流れ方を示す冷凍回路構成図、図８は一部（ガスクーラ、庫外熱交換器および戻り熱交換器）を模式的に示す側面図である。なお、実施の形態１と同じ部分にはこれと同じ符号を付し、図８において、冷媒の流れ方向矢印で、冷媒が流れる配管を実線で、冷媒が流れない配管を破線で、それぞれ示している。
図６において、自動販売機２０００（図示しない）の有する冷凍回路２０００ｓは、中温低圧冷媒が流れる配管５６に戻り熱交換器９を設置したものである。
すなわち、配管５７は分岐点（正確には分岐していない）６において、戻り熱交換器９の入側に連通する分岐管６９に接続され、戻り熱交換器９の出側とアキュムレータ７とが合流管９７によって連結されている。
すなわち、実施の形態１における冷凍回路１０００ｓでは、戻りバイパス配管系において中温低圧冷媒がガスクーラ２に選択的に供給されたのに対し、実施の形態２における冷凍回路２０００ｓでは、中温低圧冷媒が戻り熱交換器９を経由した後、圧縮機１に吸引される。なお、ガスクーラ２と庫外熱交換器８と戻り熱交換器９とは、互いに熱交換可能になっている。 [Embodiment 2]
(vending machine)
6 to 8 illustrate a vending machine according to Embodiment 2 of the present invention. FIG. 6 is a configuration diagram of a refrigeration circuit installed in the vending machine, and FIG. 7 is a refrigeration showing how refrigerant flows. FIG. 8 is a side view schematically showing a part (gas cooler, external heat exchanger and return heat exchanger). In addition, the same code | symbol is attached | subjected to this, and the same code | symbol is attached | subjected to Embodiment 1 in FIG. Yes.
In FIG. 6, the refrigeration circuit 2000s of the vending machine 2000 (not shown) has a heat exchanger 9 that is returned to the pipe 56 through which the medium-temperature and low-pressure refrigerant flows.
That is, the pipe 57 is connected to a branch pipe 69 communicating with the inlet side of the return heat exchanger 9 at the branch point (not accurately branched) 6, and the outlet side of the return heat exchanger 9 and the accumulator 7 are connected to each other. They are connected by a junction tube 97.
That is, in the refrigeration circuit 1000s in the first embodiment, the medium temperature and low pressure refrigerant is selectively supplied to the gas cooler 2 in the return bypass piping system, whereas in the refrigeration circuit 2000s in the second embodiment, the medium temperature and low pressure refrigerant returns to the return heat. After passing through the exchanger 9, it is sucked into the compressor 1. The gas cooler 2, the external heat exchanger 8, and the return heat exchanger 9 can exchange heat with each other.

（全室冷却運転モード）
図７の（ａ）において、自動販売機２０００が全室冷却運転モード（ＣＣＣ運転モード）を実行する際の冷媒の流れは、圧縮機１によって圧縮された高温高圧冷媒が、配管１２（電磁弁１２ｖが開き、電磁弁１５Ｌｖ、１５Ｍｖが閉じている）を経由してガスクーラ２に流入し、全室冷却用膨張手段３Ｃにおいて膨張して低温低圧冷媒となって、左室熱交換器５Ｌ、中室熱交換器５Ｍおよび右室熱交換器５Ｒに流入する（電磁弁４５Ｌｖ、４５Ｍｖ、４５Ｒｖが開いている）。よって、左室４０Ｌ、中室４０Ｍおよび右室４０Ｒが、冷却される。
そして、中温低圧冷媒は配管５７に流れ込み、分岐管６９を経由して戻り熱交換器９に流入し、さらに、アキュムレータ７を経由して圧縮機１に吸引される。 (All rooms cooling operation mode)
In FIG. 7A, when the vending machine 2000 executes the all-chamber cooling operation mode (CCC operation mode), the high-temperature and high-pressure refrigerant compressed by the compressor 1 is connected to the pipe 12 (solenoid valve). 12v is opened and solenoid valves 15Lv and 15Mv are closed), and flows into the gas cooler 2 and expands in the all-chamber expansion means 3C to become a low-temperature and low-pressure refrigerant. It flows into the chamber heat exchanger 5M and the right chamber heat exchanger 5R (the electromagnetic valves 45Lv, 45Mv, and 45Rv are open). Therefore, the left chamber 40L, the middle chamber 40M, and the right chamber 40R are cooled.
Then, the medium-temperature low-pressure refrigerant flows into the pipe 57, returns to the return heat exchanger 9 via the branch pipe 69, and further sucked into the compressor 1 via the accumulator 7.

したがって、ガスクーラ２と戻り熱交換器９とは互いに熱交換可能になっているから、ガスクーラ２に流入した高温高圧冷媒と、戻り熱交換器９に流入した中温低圧冷媒との間で熱交換される。すなわち、前者の温度は低下し、後者の温度は上昇するから、より過冷却状態（サブクール）において冷媒を膨張したり、より過熱状態（スーパーヒート）において冷媒を圧縮したりすることになるため、圧縮機１の負荷を増すことなく、低温低圧冷媒の最低温度をより低くしたり、高温高圧冷媒の最高温度をより高くしたりすることができる。 Accordingly, since the gas cooler 2 and the return heat exchanger 9 can exchange heat with each other, heat is exchanged between the high-temperature and high-pressure refrigerant flowing into the gas cooler 2 and the medium-temperature and low-pressure refrigerant flowing into the return heat exchanger 9. The That is, the former temperature decreases and the latter temperature rises, so that the refrigerant expands in a more supercooled state (subcool) or compresses the refrigerant in a more superheated state (superheat). Without increasing the load on the compressor 1, it is possible to lower the minimum temperature of the low-temperature and low-pressure refrigerant or to increase the maximum temperature of the high-temperature and high-pressure refrigerant.

（２室加熱運転モード）
図７の（ｂ）において、自動販売機２０００が２室加熱運転モード（ＨＨＣ運転モード）を実行する際の冷媒の流れは、圧縮機１によって圧縮された高温高圧冷媒が、配管１５Ｌ、１５Ｍ（電磁弁１２ｖが閉じ、電磁弁１５Ｌｖ、１５Ｍｖが開いて）を経由して、左室熱交換器５Ｌおよび中室熱交換器５Ｍに流入する。
その後、庫外熱交換器８および加熱用膨張手段３Ｈを経由して分岐点４に到達し、分岐点４において分岐されて配管４５Ｒ（電磁弁４５Ｒｖが開き、電磁弁４５Ｌｖ、４５Ｍｖが閉じている）を経由して右室熱交換器５Ｒに流入する。そして、配管５７Ｃに流入した冷媒（中温低圧冷媒）は、分岐管６９に流入して戻り熱交換器９を経由した後、アキュムレータ７に供給される。 (Two-chamber heating operation mode)
In FIG. 7B, when the vending machine 2000 executes the two-chamber heating operation mode (HHC operation mode), the high-temperature and high-pressure refrigerant compressed by the compressor 1 is connected to the pipes 15L and 15M ( The electromagnetic valve 12v is closed and the electromagnetic valves 15Lv and 15Mv are opened), and flows into the left chamber heat exchanger 5L and the middle chamber heat exchanger 5M.
After that, it reaches the branch point 4 via the external heat exchanger 8 and the heating expansion means 3H, branches at the branch point 4, and the pipe 45R (the electromagnetic valve 45Rv is opened and the electromagnetic valves 45Lv and 45Mv are closed). ) To the right ventricular heat exchanger 5R. Then, the refrigerant (medium-temperature low-pressure refrigerant) that has flowed into the pipe 57 </ b> C flows into the branch pipe 69, returns to the heat exchanger 9, and is then supplied to the accumulator 7.

そうすると、庫外熱交換器８と戻り熱交換器９との間で熱交換可能であるため、戻り熱交換器９に流入した中温低圧冷媒は、庫外熱交換器８を通過する中温高圧冷媒が保有する温熱を受け取って温度が上昇し、さらに、アキュムレータ７において気液が分離され、気相状態で圧縮機１に吸引される。したがって、前者の温度は低下し、後者の温度は上昇するから、より過冷却状態（サブクール）において冷媒を膨張したり、より過熱状態（スーパーヒート）において冷媒を圧縮したりすることになるため、圧縮機１の負荷を増すことなく、低温低圧冷媒の最低温度をより低くしたり、高温高圧冷媒の最高温度をより高くしたりすることができる。よって、圧縮機１の吐出温度が上昇し、左室４０Ｌおよび中室４０Ｍの加熱が確実になる。
このとき、電磁弁１２ｖが閉じているから、高温高圧冷媒がガスクーラ２やアキュムレータ７に流入することがなく、電磁弁２３Ｃｖが閉じているから、低温低圧冷媒がガスクーラ２やアキュムレータ７に流入することがない。 Then, since heat exchange is possible between the external heat exchanger 8 and the return heat exchanger 9, the medium temperature and low pressure refrigerant that has flowed into the return heat exchanger 9 passes through the external heat exchanger 8. The temperature rises upon receiving the warm heat held by the gas, and further, the gas-liquid is separated in the accumulator 7 and sucked into the compressor 1 in a gas phase state. Therefore, the former temperature decreases and the latter temperature rises. Therefore, the refrigerant is expanded in a supercooled state (subcool) or compressed in a superheated state (superheat). Without increasing the load on the compressor 1, it is possible to lower the minimum temperature of the low-temperature and low-pressure refrigerant or to increase the maximum temperature of the high-temperature and high-pressure refrigerant. Therefore, the discharge temperature of the compressor 1 rises, and heating of the left chamber 40L and the middle chamber 40M is ensured.
At this time, since the solenoid valve 12v is closed, the high-temperature and high-pressure refrigerant does not flow into the gas cooler 2 and the accumulator 7, and since the solenoid valve 23Cv is closed, the low-temperature and low-pressure refrigerant flows into the gas cooler 2 and the accumulator 7. There is no.

（ガスクーラ、庫外熱交換器および戻り熱交換器）
図８の（ａ）において、ガスクーラ２は複数枚のガスクーラ放熱板２ａとガスクーラ放熱板２ａを千鳥状に貫通するガスクーラ伝熱管２ｂとを具備し、庫外熱交換器８は複数枚の庫外放熱板８ａと庫外放熱板８ａを千鳥状に貫通する庫外伝熱管８ｂとを具備し、戻し熱交換器９は複数枚の戻し放熱板９ａと戻し放熱板９ａを千鳥状に貫通する戻し伝熱管９ｂとを具備している。このとき、ガスクーラ放熱板２ａと庫外放熱板８ａと戻し放熱板９ａとは一体的に形成されて共通のフィンを呈し、かかる共通のフィンは、庫外ファン４８１が形成する吸込空気の風路内に配置されている。 (Gas cooler, external heat exchanger and return heat exchanger)
8 (a), the gas cooler 2 includes a plurality of gas cooler heat radiating plates 2a and gas cooler heat radiating tubes 2b penetrating the gas cooler heat radiating plates 2a in a zigzag manner. A heat sink 8a and an external heat transfer tube 8b that penetrates the external heat sink 8a in a zigzag manner are provided, and the return heat exchanger 9 has a plurality of the return heat sinks 9a and the return heat sinks 9a in a zigzag manner. And a heat pipe 9b. At this time, the gas cooler heat radiating plate 2a, the external heat radiating plate 8a, and the return heat radiating plate 9a are integrally formed to present a common fin, and the common fin is an air flow path of the intake air formed by the external fan 481. Is placed inside.

また、ガスクーラ伝熱管２ｂの上側の端部には配管１２が、下側の端部には配管２３Ｃ（配管６２に同じ）が、それぞれ接続されている。同様に、庫外伝熱管８ｂの上側の端部には配管５８が、下側の端部には配管８３Ｈが、それぞれ接続されている。戻し伝熱管９ｂの上側の端部には分岐管６９が、下側の端部には合流管９７が、それぞれ接続されている。
図８の（ｂ）においても同様であって、ガスクーラ放熱板２ａと庫外放熱板８ａと戻し放熱板９ａとは一体的に形成されて共通のフィンを呈している。なお、本発明は、ガスクーラ伝熱管２ｂ、庫外伝熱管８ｂおよび戻し伝熱管９ｂの配置を図示する形態に限定するものではない。 Further, the pipe 12 is connected to the upper end of the gas cooler heat transfer tube 2b, and the pipe 23C (same as the pipe 62) is connected to the lower end. Similarly, a pipe 58 is connected to the upper end of the external heat transfer tube 8b, and a pipe 83H is connected to the lower end. A branch pipe 69 is connected to the upper end of the return heat transfer pipe 9b, and a junction pipe 97 is connected to the lower end.
The same applies to FIG. 8B, and the gas cooler heat radiating plate 2a, the external heat radiating plate 8a, and the return heat radiating plate 9a are integrally formed to present a common fin. In addition, this invention is not limited to the form which illustrates arrangement | positioning of the gas cooler heat exchanger tube 2b, the external heat exchanger tube 8b, and the return heat exchanger tube 9b.

（１室加熱運転モード）
自動販売機２０００が１室加熱運転モード（ＨＣＣ運転モードまたはＣＨＣ運転モード）を実行する際の冷媒の流れは、前記２室加熱運転モード（ＨＨＣ運転モード）に準じるから、説明を省略する（実施の形態１参照）。 (One-chamber heating operation mode)
Since the flow of the refrigerant when the vending machine 2000 executes the one-chamber heating operation mode (HCC operation mode or CHC operation mode) conforms to the two-chamber heating operation mode (HHC operation mode), the description is omitted (implementation). (Refer to Form 1).

［実施の形態３］
（自動販売機）
図９〜図１０は本発明の実施の形態３に係る自動販売機を説明するものであって、図９はこれに設置された冷凍回路の構成図、図１０は冷媒の流れ方を示す冷凍回路構成図である。なお、実施の形態１と同じ部分にはこれと同じ符号を付し、図１０において、冷媒の流れ方向矢印で、冷媒が流れる配管を実線で、冷媒が流れない配管を破線で、それぞれ示している。
図９において、自動販売機３０００（図示しない）の有する冷凍回路３０００ｓは、中温低圧冷媒が流れる配管５６に内部熱交換器１０を設置したものである。
すなわち、配管５７の分岐点（正確には分岐していない）６よりもアキュムレータ７側の範囲である配管６７は、その一部が、内部熱交換器１０を形成する内部低圧側伝熱管１０ｂになっている。また、庫外熱交換器８と加熱用膨張手段３Ｈとを連結する配管８３Ｈの一部が、内部熱交換器１０を形成する内部高圧側伝熱管１０ａになっている。
そして、内部高圧側伝熱管１０ａと内部低圧側伝熱管１０ｂとは伝熱可能に、直接または伝熱体を介して配置されている。 [Embodiment 3]
(vending machine)
9 to 10 illustrate a vending machine according to Embodiment 3 of the present invention. FIG. 9 is a configuration diagram of a refrigeration circuit installed in the vending machine, and FIG. 10 is a refrigeration showing how refrigerant flows. It is a circuit block diagram. In addition, the same code | symbol is attached | subjected to this, and the same code | symbol is attached to this 1st Embodiment, and the flow direction arrow of a refrigerant | coolant in FIG. Yes.
In FIG. 9, a refrigeration circuit 3000 s included in a vending machine 3000 (not shown) has the internal heat exchanger 10 installed in a pipe 56 through which a medium temperature and low pressure refrigerant flows.
That is, a part of the pipe 67, which is in the range closer to the accumulator 7 than the branch point (not accurately branched) 6 of the pipe 57, is connected to the internal low-pressure side heat transfer pipe 10 b forming the internal heat exchanger 10. It has become. A part of the pipe 83 </ b> H that connects the external heat exchanger 8 and the heating expansion means 3 </ b> H is an internal high-pressure side heat transfer tube 10 a that forms the internal heat exchanger 10.
And the internal high voltage | pressure side heat exchanger tube 10a and the internal low voltage | pressure side heat exchanger tube 10b are arrange | positioned directly or via a heat exchanger so that heat transfer is possible.

（全室冷却運転モード）
図１０の（ａ）において、自動販売機２０００が全室冷却運転モード（ＣＣＣ運転モード）を実行する際の冷媒の流れは、圧縮機１によって圧縮された高温高圧冷媒が、配管１２（電磁弁１２ｖが開き、電磁弁１５Ｌｖ、１５Ｍｖが閉じている）を経由してガスクーラ２に流入し、全室冷却用膨張手段３Ｃにおいて膨張して低温低圧冷媒となって、左室熱交換器５Ｌ、中室熱交換器５Ｍおよび右室熱交換器５Ｒに流入する（電磁弁４５Ｌｖ、４５Ｍｖ、４５Ｒｖが開いている）。よって、左室４０Ｌ、中室４０Ｍおよび右室４０Ｒが、冷却される。
そして、中温低圧冷媒は配管５７に流れ込み、分岐管６９を経由して戻り熱交換器９に流入し、さらに、アキュムレータ７を経由して圧縮機１に吸引される（実施の形態１に同じ）。 (All rooms cooling operation mode)
In FIG. 10A, when the vending machine 2000 executes the all-chamber cooling operation mode (CCC operation mode), the high-temperature and high-pressure refrigerant compressed by the compressor 1 is connected to the pipe 12 (solenoid valve). 12v is opened and solenoid valves 15Lv and 15Mv are closed), and flows into the gas cooler 2 and expands in the all-chamber expansion means 3C to become a low-temperature and low-pressure refrigerant. It flows into the chamber heat exchanger 5M and the right chamber heat exchanger 5R (the electromagnetic valves 45Lv, 45Mv, and 45Rv are open). Therefore, the left chamber 40L, the middle chamber 40M, and the right chamber 40R are cooled.
Then, the medium-temperature and low-pressure refrigerant flows into the pipe 57, flows back into the return heat exchanger 9 through the branch pipe 69, and is further sucked into the compressor 1 through the accumulator 7 (same as in the first embodiment). .

（２室加熱運転モード）
図１０の（ｂ）において、自動販売機２０００が２室加熱運転モード（ＨＨＣ運転モード）を実行する際の冷媒の流れは、圧縮機１によって圧縮された高温高圧冷媒が、配管１５Ｌ、１５Ｍ（電磁弁１２ｖが閉じ、電磁弁１５Ｌｖ、１５Ｍｖが開いて）を経由して、左室熱交換器５Ｌおよび中室熱交換器５Ｍに流入する。
その後、庫外熱交換器８および内部熱交換器１０（正確には、内部高圧側伝熱管１０ａ）を通過して加熱用膨張手段３Ｈに到達し、加熱用膨張手段３Ｈにおいて膨張した冷媒は分岐点４において分岐されて配管４５Ｒ（電磁弁４５Ｒｖが開き、電磁弁４５Ｌｖ、４５Ｍｖが閉じている）を経由して右室熱交換器５Ｒに流入する。そして、配管５７Ｃに流入した冷媒（中温低圧冷媒）は、分岐管６９に流入して内部熱交換器１０（正確には、内部低圧側伝熱管１０ｂ）を経由した後、アキュムレータ７に供給される。 (Two-chamber heating operation mode)
In FIG. 10B, the flow of the refrigerant when the vending machine 2000 executes the two-chamber heating operation mode (HHC operation mode) indicates that the high-temperature and high-pressure refrigerant compressed by the compressor 1 is connected to the pipes 15L and 15M ( The electromagnetic valve 12v is closed and the electromagnetic valves 15Lv and 15Mv are opened), and flows into the left chamber heat exchanger 5L and the middle chamber heat exchanger 5M.
Thereafter, the refrigerant passes through the external heat exchanger 8 and the internal heat exchanger 10 (more precisely, the internal high-pressure side heat transfer tube 10a) and reaches the heating expansion means 3H, and the refrigerant expanded in the heating expansion means 3H branches. It branches at the point 4 and flows into the right ventricular heat exchanger 5R via the pipe 45R (the electromagnetic valve 45Rv is opened and the electromagnetic valves 45Lv and 45Mv are closed). Then, the refrigerant (medium-temperature low-pressure refrigerant) flowing into the pipe 57C flows into the branch pipe 69, passes through the internal heat exchanger 10 (more precisely, the internal low-pressure side heat transfer pipe 10b), and is then supplied to the accumulator 7. .

そうすると、内部熱交換器１０の内部高圧側伝熱管１０ａと内部低圧側伝熱管１０ｂとの間で熱交換可能であるため、内部低圧側伝熱管１０ｂに流入した中温低圧冷媒は、内部高圧側伝熱管１０ａを通過する中温高圧冷媒が保有する温熱を受け取って温度が上昇し、さらに、アキュムレータ７において気液が分離され、気相状態で圧縮機１に吸引される。
したがって、前者の温度は低下し、後者の温度は上昇するから、より過冷却状態（サブクール）において冷媒を膨張したり、より過熱状態（スーパーヒート）において冷媒を圧縮したりすることになるため、圧縮機１の負荷を増すことなく、低温低圧冷媒の最低温度をより低くしたり、高温高圧冷媒の最高温度をより高くしたりすることができる。よって、圧縮機１の吐出温度が上昇し、左室４０Ｌおよび中室４０Ｍの加熱が確実になる。
このとき、電磁弁１２ｖが閉じているから、高温高圧冷媒がガスクーラ２やアキュムレータ７に流入することがなく、電磁弁２３Ｃｖが閉じているから、低温低圧冷媒がガスクーラ２やアキュムレータ７に流入することがない。 Then, since heat exchange is possible between the internal high-pressure side heat transfer tube 10a and the internal low-pressure side heat transfer tube 10b of the internal heat exchanger 10, the medium temperature and low-pressure refrigerant flowing into the internal low-pressure side heat transfer tube 10b The temperature of the medium-temperature high-pressure refrigerant passing through the heat pipe 10a is received and the temperature rises. Further, the gas-liquid is separated in the accumulator 7 and sucked into the compressor 1 in a gas phase state.
Therefore, the former temperature decreases and the latter temperature rises. Therefore, the refrigerant is expanded in a supercooled state (subcool) or compressed in a superheated state (superheat). Without increasing the load on the compressor 1, it is possible to lower the minimum temperature of the low-temperature and low-pressure refrigerant or to increase the maximum temperature of the high-temperature and high-pressure refrigerant. Therefore, the discharge temperature of the compressor 1 rises, and heating of the left chamber 40L and the middle chamber 40M is ensured.
At this time, since the solenoid valve 12v is closed, the high-temperature and high-pressure refrigerant does not flow into the gas cooler 2 and the accumulator 7, and since the solenoid valve 23Cv is closed, the low-temperature and low-pressure refrigerant flows into the gas cooler 2 and the accumulator 7. There is no.

（１室加熱運転モード）
自動販売機３０００が１室加熱運転モード（ＨＣＣ運転モードまたはＣＨＣ運転モード）を実行する際の冷媒の流れは、前記２室加熱運転モード（ＨＨＣ運転モード）に準じるから、説明を省略する（実施の形態１参照）。 (One-chamber heating operation mode)
Since the flow of the refrigerant when the vending machine 3000 executes the one-chamber heating operation mode (HCC operation mode or CHC operation mode) conforms to the two-chamber heating operation mode (HHC operation mode), description thereof is omitted (implementation). (Refer to Form 1).

本発明によれば、圧縮機に戻る冷媒の温度が上昇して圧縮機の吐出温度を高めることができる冷凍回路を有するから、ヒートポンプ運転可能な各種自動販売機として広く利用することができる。 According to the present invention, it has a refrigeration circuit capable of increasing the discharge temperature of the compressor by increasing the temperature of the refrigerant returning to the compressor, and thus can be widely used as various vending machines capable of operating a heat pump.

本発明の実施の形態１に係る自動販売機を模式的に示す正面視の断面図。BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing of the front view which shows typically the vending machine which concerns on Embodiment 1 of this invention. 図１に示す自動販売機を模式的に示す側面視の断面図。Sectional drawing of the side view which shows typically the vending machine shown in FIG. 図１に示す自動販売機に設置された冷凍回路の構成図。The block diagram of the freezing circuit installed in the vending machine shown in FIG. 図３に示す構成図における冷媒の流れ方を示す冷凍回路構成図。The refrigeration circuit block diagram which shows how the refrigerant | coolant flows in the block diagram shown in FIG. 図３に示す冷凍回路を形成する一部部材を模式的に示す側面図。The side view which shows typically the one part member which forms the refrigeration circuit shown in FIG. 本発明の実施の形態１に係る自動販売機に設置された冷凍回路の構成図。The block diagram of the refrigerating circuit installed in the vending machine which concerns on Embodiment 1 of this invention. 図６に示す構成図における冷媒の流れ方を示す冷凍回路構成図。The refrigeration circuit block diagram which shows how the refrigerant | coolant flows in the block diagram shown in FIG. 図６に示す冷凍回路を形成する一部部材を模式的に示す側面図。The side view which shows typically the one part member which forms the refrigeration circuit shown in FIG. 本発明の実施の形態１に係る自動販売機に設置された冷凍回路の構成図。The block diagram of the refrigerating circuit installed in the vending machine which concerns on Embodiment 1 of this invention. 図６に示す構成図における冷媒の流れ方を示す冷凍回路構成図。The refrigeration circuit block diagram which shows how the refrigerant | coolant flows in the block diagram shown in FIG.

Explanation of symbols

１圧縮機
２ガスクーラ
２ａガスクーラ放熱板
２ｂガスクーラ伝熱管
３Ｃ全室冷却用膨張手段
３Ｈ加熱用膨張手段
４分岐点
５Ｌ左室熱交換器
５Ｍ中室熱交換器
５Ｒ右室熱交換器
６分岐点
７アキュムレータ
８庫外熱交換器
８ａ庫外放熱板
８ｂ庫外伝熱管
９戻り熱交換器
９ａ戻り放熱板
９ｂ戻り伝熱管
１０内部熱交換器
１０ａ内部高圧側伝熱管
１０ｂ内部低圧側伝熱管
２７合流管
４０Ｌ左室
４０Ｍ中室
４０Ｒ右室
６２分岐管
６９分岐管
９７合流管
２００キャビネット
３００断熱材
４００商品収納庫
４０３ＬＭ仕切り板
４０３ＭＲ仕切り板
４０４商品補充用扉
４０５内扉
４０６前扉
４０７商品収納ラック
４０８商品誘導板
４０９商品取出し口
４１０庫内部品収納室
４２０循環ダクト
４３０送風手段
４４０庫内熱交換器
４５０送風ダクト
４６０風胴
４７０コンデンシングユニット
４８０機械室
４８１庫外ファン
４９０電装品収納室
１０００自動販売機（実施の形態１）
１０００ｓ冷凍回路（実施の形態１）
２０００自動販売機（実施の形態２）
２０００ｓ冷凍回路（実施の形態２）
３０００自動販売機（実施の形態３）
３０００ｓ冷凍回路（実施の形態３）
Ｓ商品 DESCRIPTION OF SYMBOLS 1 Compressor 2 Gas cooler 2a Gas cooler heat sink 2b Gas cooler heat exchanger tube 3C Expansion expansion means for cooling all rooms 3H Expansion means for heating 4 Branch point 5L Left chamber heat exchanger 5M Middle chamber heat exchanger 5R Right chamber heat exchanger 6 Branch point 7 Accumulator 8 External heat exchanger 8a External heat sink 8b External heat transfer tube 9 Return heat exchanger 9a Return heat sink 9b Return heat transfer tube 10 Internal heat exchanger 10a Internal high pressure side heat transfer tube 10b Internal low pressure side heat transfer tube 27 Combined tube 40L Left chamber 40M Middle chamber 40R Right chamber 62 Branch pipe 69 Branch pipe 97 Junction pipe 200 Cabinet 300 Insulation material 400 Product storage 403LM Partition plate 403MR Partition plate 404 Product replenishment door 405 Inner door 406 Front door 407 Product storage rack 408 Product guidance Plate 409 Product outlet 410 Internal component storage room 420 Circulating duct 430 Means 440-compartment heat exchanger 450 air duct 460 wind tunnel 470 condensing unit 480 machine room 481 external fan 490 electrical equipment container chamber 1000 vending machine (Embodiment 1)
1000s refrigeration circuit (Embodiment 1)
2000 Vending machine (Embodiment 2)
2000s refrigeration circuit (Embodiment 2)
3000 vending machine (Embodiment 3)
3000s refrigeration circuit (Embodiment 3)
S product

Claims

A housing surrounded by a heat insulating material and having an opening on one side;
A heat insulating door that opens and closes the opening;
The left chamber, the middle chamber, and the right chamber, which are partitioned by a partition plate disposed in the housing,
A left chamber heat exchanger, a middle chamber heat exchanger and a right chamber heat exchanger which are arranged in the left chamber, the middle chamber and the right chamber, respectively, and exchange heat with the air inside the left chamber,
A compressor for compressing the refrigerant;
A gas cooler and an external heat exchanger capable of exchanging heat between the supplied refrigerant and the outside air and mutually exchanging heat;
Expansion means for expanding the supplied refrigerant;
Have
The refrigerant compressed in the compressor first passes through the gas cooler and then through the expansion means, and then passes through the left chamber heat exchanger, the middle chamber heat exchanger, and the right chamber heat exchanger, and then the compression. All room cooling operation mode to return to the machine,
The refrigerant compressed in the compressor first passes through both the left chamber heat exchanger and the middle chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, and the right chamber heat exchanger. A two-chamber heating operation mode after passing through and returning to the compressor via the gas cooler;
Alternatively, the refrigerant compressed in the compressor first passes through the left chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, the middle chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the gas cooler,
Alternatively, the refrigerant compressed in the compressor first passes through the middle chamber heat exchanger, and then sequentially passes through the external heat exchanger, the expansion means, the left chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the gas cooler,
A vending machine characterized by executing.

The gas cooler comprises a plurality of gas cooler heat sinks, and gas cooler heat transfer tubes that penetrate the gas cooler heat sinks in a staggered manner,
The external heat exchanger comprises a plurality of external heat dissipation plates, and external heat transfer tubes that penetrate the external heat dissipation plates in a staggered manner,
The vending machine according to claim 1, wherein the gas cooler heat sink and the outside heat sink are joined or integrally formed.

A housing surrounded by a heat insulating material and having an opening on one side;
A heat insulating door that opens and closes the opening;
The left chamber, the middle chamber, and the right chamber, which are partitioned by a partition plate disposed in the housing,
A left chamber heat exchanger, a middle chamber heat exchanger and a right chamber heat exchanger which are arranged in the left chamber, the middle chamber and the right chamber, respectively, and exchange heat with the air inside the left chamber,
A compressor for compressing the refrigerant;
A gas cooler, an external heat exchanger and a return heat exchanger capable of exchanging heat between the supplied refrigerant and the outside air and mutually exchanging heat;
Expansion means for expanding the supplied refrigerant;
Have
The refrigerant compressed in the compressor first passes through the gas cooler and the expansion means, and then passes through the left ventricular heat exchanger, the middle chamber heat exchanger, and the right ventricular heat exchanger, and then returns. All-chamber cooling operation mode returning to the compressor via a heat exchanger,
The refrigerant compressed in the compressor first passes through both the left chamber heat exchanger and the middle chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, and the right chamber heat exchanger. A two-chamber heating operation mode after passing through and returning to the compressor via the return heat exchanger;
Alternatively, the refrigerant compressed in the compressor first passes through the left chamber heat exchanger, and sequentially passes through the external heat exchanger, the expansion means, the middle chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the return heat exchanger,
Alternatively, the refrigerant compressed in the compressor first passes through the middle chamber heat exchanger, and then sequentially passes through the external heat exchanger, the expansion means, the left chamber heat exchanger, and the right chamber heat exchanger. And a one-chamber heating operation mode for returning to the compressor via the return heat exchanger,
A vending machine characterized by executing.

The gas cooler comprises a plurality of gas cooler heat sinks, and gas cooler heat transfer tubes that penetrate the gas cooler heat sinks in a staggered manner,
The external heat exchanger comprises a plurality of external heat dissipation plates, and external heat transfer tubes that penetrate the external heat dissipation plates in a staggered manner,
The return heat exchanger comprises a plurality of return heat radiating plates and return heat transfer tubes that pass through the return heat radiating plates in a staggered manner,
4. The vending machine according to claim 3, wherein the gas cooler heat sink, the outside heat sink, and the return heat sink are joined or integrally formed.

A housing surrounded by a heat insulating material and having an opening on one side;
A heat insulating door that opens and closes the opening;
The left chamber, the middle chamber, and the right chamber, which are partitioned by a partition plate disposed in the housing,
A left chamber heat exchanger, a middle chamber heat exchanger and a right chamber heat exchanger which are arranged in the left chamber, the middle chamber and the right chamber, respectively, and exchange heat with the air inside the left chamber,
A compressor for compressing the refrigerant;
A gas cooler, an external heat exchanger and a return heat exchanger capable of exchanging heat between the supplied refrigerant and the outside air and mutually exchanging heat;
Expansion means for expanding the supplied refrigerant;
An internal heat exchanger comprising an internal high-pressure side pipe to which the refrigerant immediately after passing through the external heat exchanger is supplied, and an internal low-pressure side pipe to which the refrigerant just before returning to the compressor is supplied;
Have
The refrigerant compressed in the compressor first passes through the gas cooler, passes through the expansion means, passes through the left ventricular heat exchanger, the middle chamber heat exchanger, and the right ventricular heat exchanger, and then returns. All-chamber cooling operation mode returning to the compressor via a heat exchanger,
The refrigerant compressed in the compressor first passes through both the left chamber heat exchanger and the middle chamber heat exchanger, and the external heat exchanger, the internal high-pressure side pipe, the expansion means, and the right A two-chamber heating operation mode that sequentially passes through the heat exchanger and then returns to the compressor via the internal low-pressure side pipe;
Alternatively, the refrigerant compressed in the compressor first passes through the left ventricular heat exchanger, and the external heat exchanger, the internal high-pressure side pipe, the expansion means, the middle chamber heat exchanger, and the right chamber A one-chamber heating operation mode that sequentially passes through the heat exchanger and then returns to the compressor via the internal low-pressure side pipe;
Alternatively, the refrigerant compressed in the compressor first passes through the middle chamber heat exchanger, and the external heat exchanger, the internal high-pressure side pipe, the expansion means, the left chamber heat exchanger, and the right chamber A one-chamber heating operation mode that sequentially passes through the heat exchanger and then returns to the compressor via the internal low-pressure side pipe;
A vending machine characterized by executing.