JP2005055164A - Cooling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling device capable of satisfactorily cooling a commodity stored in a commodity storage part by use of cold heat from a Stirling refrigerator. <P>SOLUTION: The cooling device 20 for cooling commodities W stored in commodity storages 5a, 5b, and 5c comprises intake ducts 25a and 25b that are air circulating means for circulating the air in the storages 5a, 5b and 5c between the inside and outside of the storages 5a, 5b and 5c; heat exchange ducts 23a and 23b; air sending ducts 24a and 24b; circulating fans 26a and 26b; a plurality of Stirling refrigerators 10a and 10b arranged out of the storages 5a, 5b and 5c; and a cooler 21 and a heat exchange duct 23 for cooling the air circulated by the circulating means by use of the cold heat generated from each of the Stirling refrigerators 10a and 10b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cooling device, and more particularly to a cooling device for cooling a product stored in a product storage unit of a vending machine.

  17 is a front sectional view showing a general vending machine, and FIG. 18 is a side sectional view of the vending machine shown in FIG. 17 and 18, the vending machine includes a main body cabinet 1.

  The main body cabinet 1 is formed as a rectangular heat insulating casing having an open front surface. The main body cabinet 1 is provided with an outer door 2 and an inner door 3 on the front surface thereof, and for example, three independent commodity containers 5a and 5b partitioned inside by two heat insulating partition plates 4a and 4b. , 5c are arranged side by side. More detailed description is as follows. The outer door 2 is for opening and closing the front opening 1 a of the main body cabinet 1. The inner door 3 is for opening and closing the front surface of the product storage 5a, 5b, 5c. The product storages 5a, 5b, 5c are for storing beverage cans and plastic bottles in a state maintained at a desired temperature.

  The product storage racks 5a, 5b, and 5c are provided with a product storage rack 6, a carry-out mechanism 7, and a product carry-out shooter 8, respectively. The product storage rack 6 is for storing products W such as canned beverages and beverages containing plastic bottles in a lined up and down direction. The carry-out mechanism (carry-out means) 7 is provided at the lower part of the product storage rack 6 and is used to carry out the products W at the bottom of the product group stored in the product storage rack 6 one by one. is there. The product carry-out shooter 8 is for guiding the product W carried out from the carry-out mechanism 7 to the product take-out port 2 a provided in the outer door 2.

  Inside the main body cabinet 1, a machine room 9 which is outside the commodity storage 5 a, 5 b, 5 c is provided with a compressor 51, an external blower fan 52, and a condenser (external heat exchanger) that are components of the refrigerator. ) 53, an expansion mechanism 54, and the like. Inside the product storage 5a, 5b, 5c, an evaporator (internal heat exchanger) 55 and an internal blower fan F, which are components of the refrigerator, are provided, respectively, and the evaporator 55 A circulation duct 56 is provided on the back side of the. In addition, the commodity storage 5a, 5b, 5c is provided with a heater H for heating.

  In such a vending machine, the product W can be cooled as follows. After turning off the heater H, the refrigerator and the internal fan F are driven. Thereby, the cold air obtained by heat exchange with the evaporator 55 is blown out from the lower side of the product carry-out shooter 8 by the internal blower fan F, and circulates as indicated by the arrows in the figure. That is, the cool air cools the product W in the lower part of the product storage rack 6 and then returns to the evaporator 55 through the circulation duct 56. Thus, by intermittently driving the refrigerator and the internal blower fan F so that the cold air circulates inside the product storage 5a, 5b, 5c, the temperature of the product W in the product storage rack 6 is set to an optimal sales temperature (about 5 ° C.).

JP 2001-34828 A

  By the way, in the refrigerator of the conventional vending machine as described above, for example, a fluorocarbon gas such as R407c has been used. When such CFCs are released into the atmosphere, they contribute to global warming due to the greenhouse effect. For this reason, the use of CFCs is in a global trend from the viewpoint of environmental protection.

  In such a background, in recent years, Stirling refrigerators have attracted attention. A Stirling refrigerator is a self-cooling type refrigerator that does not have an external compressor or condenser. By compressing and expanding the internal gas using a reciprocating compressor, A high temperature part (high heat part) is generated. Here, a natural refrigerant such as helium gas is used as the gas, and since a chlorofluorocarbon-based gas is not used, the Stirling refrigerator is friendly to the global environment. It is also well known that Stirling refrigerators are small and have high energy efficiency.

  However, since the Stirling refrigerator uses the refrigeration effect due to the compression and expansion of gas, the structure of the compression / expansion space is limited, and the area of the low temperature part is limited to a small part. Therefore, when cooling the product inside the product storage using such a Stirling refrigerator, the cooling heat obtained from the low temperature part of the Stirling refrigerator is efficiently transmitted to the inside of each product storage and the product is cooled. There is a need for means.

  An object of this invention is to provide the cooling device which can cool the goods accommodated in the inside of a goods accommodating part favorably using the cold heat | fever from a Stirling refrigerator in view of the said situation.

  In order to achieve the above object, a cooling device according to claim 1 of the present invention is a cooling device for cooling a product stored in a product storage unit, wherein the product storage portion has an internal atmosphere. Utilizing the internal atmosphere circulating means for circulating between the inside and the outside of the storage unit, the plurality of Stirling refrigerators disposed outside the product storage unit, and the cold generated from each of the plurality of Stirling refrigerators And a cooling means for cooling the internal atmosphere circulated by the internal atmosphere circulation means.

  According to a second aspect of the present invention, there is provided a cooling device for cooling a product accommodated in a product accommodating portion, wherein the interior atmosphere of the product accommodating portion is changed between the inside and outside of the product accommodating portion. The internal atmosphere circulating means for circulation between the plurality of Stirling refrigerators disposed outside the product storage unit, and the cooling heat generated from each of the plurality of Stirling refrigerators, and the unified cooling heat And a cooling means for cooling the internal atmosphere circulated by the internal atmosphere circulation means.

  Moreover, the cooling device according to claim 3 of the present invention is a cooling device for cooling a product accommodated in the product accommodating portion, wherein the cold heat generating portion for generating cold is located in the product accommodating portion. And a Stirling refrigerator arranged in the above, and an internal cooling means for cooling the internal atmosphere of the product storage unit using the cold generated in the cold part.

  According to a fourth aspect of the present invention, there is provided the cooling device according to any one of the first or second aspect, wherein the internal atmosphere circulating means converts the internal atmosphere cooled by the cooling means into the commodity accommodating portion. A first duct for moving to the inside of the product and a second duct for moving the internal atmosphere of the commodity accommodating portion to a place cooled by the cooling means, the first duct and the second duct The internal atmosphere is circulated through the air.

  The cooling device according to claim 5 of the present invention is the cooling device according to claim 1, claim 2, or claim 4, wherein the internal atmosphere circulation means is located between the inside and the outside of the product accommodating portion. It is characterized by having a blocking means for blocking the movement of the atmosphere.

  A cooling device according to claim 6 of the present invention is a cooling device for cooling a product stored in a product storage unit using a plurality of Stirling refrigerators, from each of the plurality of Stirling refrigerators. A high-temperature exhaust heat release means is provided for unifying the generated high-temperature exhaust heat and releasing the integrated high-temperature exhaust heat to the outside.

  The cooling device according to claim 7 of the present invention is the cooling device according to claim 6, wherein the high-temperature exhaust heat release means is provided corresponding to each of the plurality of Stirling refrigerators and is generated from the Stirling refrigerator. It is equipped with multiple high-temperature exhaust heat transporting means that transfers high-temperature exhaust heat by transferring it to the working fluid encapsulated inside, and discharges the high-temperature exhaust heat transported by each high-temperature exhaust heat transport means in an integrated discharge section. It is characterized by doing.

  The cooling device according to claim 8 of the present invention is the cooling device according to claim 7, wherein the plurality of high-temperature exhaust heat transport means transports the high-temperature exhaust heat by moving the working fluid by a common pump. It is characterized by that.

  The cooling device according to claim 9 of the present invention is the cooling device according to claim 7, wherein the plurality of high-temperature exhaust heat transport means evaporates a working fluid by high-temperature exhaust heat generated in the Stirling refrigerator, High-temperature exhaust heat is transported by circulating the working fluid while changing the phase between the condenser and the condensing unit that condenses the working fluid evaporated in the evaporation unit that flows in the meandering flow path. In the integrated discharge part, the flow path of the condensing part in each high-temperature exhaust heat transporting means is arranged along the vertical direction in a manner parallel to the flow of outside air. And

  The cooling device according to claim 10 of the present invention is the cooling device according to claim 7, wherein the plurality of high-temperature exhaust heat transport means evaporate the working fluid by the high-temperature exhaust heat generated in the Stirling refrigerator, High-temperature exhaust heat is transported by circulating the working fluid while changing the phase between the condenser and the condensing unit that condenses the working fluid evaporated in the evaporation unit that flows in the meandering flow path. In the integrated discharge part, the flow path of the condensing part in each high-temperature exhaust heat transport means is alternately arranged along the vertical direction in a manner parallel to the flow of the outside air. It is characterized by.

  A cooling device according to an eleventh aspect of the present invention is the cooling device according to any one of the first to fifth aspects, wherein the high temperature exhaust heat generated from each of the plurality of Stirling refrigerators is unified, and the unified high temperature exhaust heat is obtained. A high-temperature exhaust heat release means for releasing heat to the outside is provided.

  The cooling device according to claim 12 of the present invention is the cooling device according to claim 11, wherein the high-temperature exhaust heat release means is provided corresponding to each of the plurality of Stirling refrigerators and is generated from the Stirling refrigerator. It is equipped with multiple high-temperature exhaust heat transporting means that transfers high-temperature exhaust heat by transferring it to the working fluid encapsulated inside, and discharges the high-temperature exhaust heat transported by each high-temperature exhaust heat transport means in an integrated discharge section. It is characterized by doing.

  The cooling device according to claim 13 of the present invention is the cooling device according to claim 12, wherein the plurality of high-temperature exhaust heat transport means transports the high-temperature exhaust heat by moving the working fluid by a common pump. It is characterized by that.

  The cooling device according to claim 14 of the present invention is the cooling device according to claim 12, wherein the plurality of high-temperature exhaust heat transport means evaporates the working fluid by the high-temperature exhaust heat generated in the Stirling refrigerator. High-temperature exhaust heat is transported by circulating the working fluid while changing the phase between the condenser and the condensing unit that condenses the working fluid evaporated in the evaporation unit that flows in the meandering flow path. In the integrated discharge part, the flow path of the condensing part in each high-temperature exhaust heat transporting means is arranged along the vertical direction in a manner parallel to the flow of outside air. And

  The cooling device according to claim 15 of the present invention is the cooling device according to claim 12, wherein the plurality of high-temperature exhaust heat transport means evaporates a working fluid by high-temperature exhaust heat generated in the Stirling refrigerator, High-temperature exhaust heat is transported by circulating the working fluid while changing the phase between the condenser and the condensing unit that condenses the working fluid evaporated in the evaporation unit that flows in the meandering flow path. In the integrated discharge part, the flow path of the condensing part in each high-temperature exhaust heat transport means is alternately arranged along the vertical direction in a manner parallel to the flow of the outside air. It is characterized by.

  According to the first aspect of the present invention, the internal atmosphere circulation means circulates the internal atmosphere of the product accommodating portion between the inside and the outside of the product accommodating portion, and the cooling means includes a plurality of Stirling refrigerators. Since the internal atmosphere circulated by the internal atmosphere circulation means is cooled using the cold heat generated from each of the above, the commodity accommodated in the commodity accommodating portion can be cooled in the cooled internal atmosphere. Therefore, it is possible to satisfactorily cool the product stored in the product storage unit using the cold heat from the Stirling refrigerator. In addition, since cooling is performed by using the cold generated from a plurality of Stirling refrigerators, the cooling load of one Stirling refrigerator can be reduced, and therefore the change width of the refrigeration output of each Stirling refrigerator is reduced. be able to. Therefore, each Stirling refrigerator can be operated in the vicinity of the maximum cooling efficiency point at which the cooling efficiency is maximized. As a result, the product cooling efficiency can be increased.

  According to invention of Claim 2 of this invention, an internal atmosphere circulation means circulates the internal atmosphere of a goods accommodating part between the inside and the exterior of a goods accommodating part, and a cooling means is a some Stirling refrigerator Since the internal heat circulated by the internal atmosphere circulation means is cooled using the centralized cold heat, the products stored in the product storage section in the cooled internal atmosphere Can be cooled. Therefore, it is possible to satisfactorily cool the product stored in the product storage unit using the cold heat from the Stirling refrigerator. In addition, since cooling is performed by using the cold generated from a plurality of Stirling refrigerators, the cooling load of one Stirling refrigerator can be reduced, and therefore the change width of the refrigeration output of each Stirling refrigerator is reduced. be able to. Therefore, each Stirling refrigerator can be operated in the vicinity of the maximum cooling efficiency point at which the cooling efficiency is maximized. As a result, the product cooling efficiency can be increased. Furthermore, since the cold heat generated from each of the plurality of Stirling refrigerators is integrated and used, the number of parts can be reduced.

  According to the invention described in claim 3 of the present invention, the Stirling refrigerator is disposed in such a manner that the cold heat portion is located inside the product accommodating portion, and the internal cooling means utilizes the cold generated by the cold heat portion. And since the internal atmosphere of a goods accommodating part is cooled, the goods accommodated in the inside of a goods accommodating part can be cooled in this cooled internal atmosphere. Therefore, it is possible to satisfactorily cool the product stored in the product storage unit using the cold heat from the Stirling refrigerator. Moreover, since the cooling unit of the Stirling refrigerator is located inside the product storage unit, the internal atmosphere of the product storage unit can be directly cooled, and therefore, the cold generated in the cooling unit can be used effectively. Can do.

  According to the invention described in claim 4 of the present invention, the internal atmosphere circulation means circulates the internal atmosphere of the product housing portion between the inside and the outside of the product housing portion via the first duct and the second duct. And the cooling means cools the internal atmosphere outside the product storage section by the internal atmosphere circulation means using the cold heat from each of the plurality of Stirling refrigerators, so that the product storage section in the cooled internal atmosphere The goods stored in the interior of the can be cooled. Therefore, it is possible to satisfactorily cool the product stored in the product storage unit using the cold heat from the Stirling refrigerator.

  According to the invention described in claim 5 of the present invention, the blocking means blocks the movement of the internal atmosphere between the inside and the outside of the product housing portion. There is no circulation of the internal atmosphere between them. Therefore, the product inside such a predetermined product storage unit can be heated by, for example, a heater and can be used for heating the product.

  According to the sixth aspect of the present invention, the high temperature exhaust heat release means unifies the high temperature exhaust heat generated from each of the plurality of Stirling refrigerators, and releases the integrated high temperature exhaust heat to the outside. Therefore, the number of parts can be reduced, and thus the cost can be reduced.

  According to the invention described in claim 7 of the present invention, the high-temperature exhaust heat transported by the plurality of high-temperature exhaust heat transport means is unified and released by the integrated discharge section, so that the number of parts can be reduced. Thus, the cost can be reduced.

  According to the invention described in claim 8 of the present invention, the plurality of high-temperature exhaust heat transporting means transports the high-temperature exhaust heat by moving the working fluid by a common pump, thereby reducing the number of times the pump is driven / stopped. Accordingly, the service life of the pump can be increased and the reliability can be improved.

  According to the ninth aspect of the present invention, the flow path of the condensing unit in each high-temperature exhaust heat transporting unit in the integrated discharge unit is arranged along the vertical direction in a manner parallel to the flow of outside air. As a result, outside air having substantially the same temperature passes through the inside of the integrated discharge section, thereby eliminating the bias of the heat dissipation efficiency.

  According to the invention described in claim 10 of the present invention, in the integrated discharge section, the flow paths of the condensing sections in the respective high-temperature exhaust heat transport means are alternately arranged along the vertical direction in a manner parallel to the flow of the outside air. Therefore, the outside air having substantially the same temperature passes through the integrated discharge section, thereby eliminating the bias of the heat dissipation efficiency.

  According to the eleventh aspect of the present invention, the high-temperature exhaust heat releasing means unifies the high-temperature exhaust heat generated from each of the plurality of Stirling refrigerators and releases the integrated high-temperature exhaust heat to the outside. Therefore, the number of parts can be reduced, and thus the cost can be reduced.

  According to the invention described in claim 12 of the present invention, the high-temperature exhaust heat transported by the plurality of high-temperature exhaust heat transport means is unified and released by the integrated discharge section, so that the number of parts can be reduced. Thus, the cost can be reduced.

  According to the thirteenth aspect of the present invention, the plurality of high-temperature exhaust heat transport means transports the high-temperature exhaust heat by moving the working fluid by a common pump, so that the number of times the pump is driven and stopped is reduced. Accordingly, the service life of the pump can be increased and the reliability can be improved.

  According to the fourteenth aspect of the present invention, the flow path of the condensing unit in each high-temperature exhaust heat transporting unit in the integrated discharge unit is arranged in the vertical direction in a manner parallel to the flow of outside air. As a result, outside air having substantially the same temperature passes through the inside of the integrated discharge section, so that it is possible to eliminate unevenness in heat dissipation efficiency.

  According to the fifteenth aspect of the present invention, in the integrated discharge section, the flow path of the condensing section in each high-temperature exhaust heat transporting means is alternated along the vertical direction in a manner parallel to the flow of outside air. Therefore, the outside air having substantially the same temperature passes through the inside of the integrated discharge part, and therefore, the bias of the heat radiation efficiency can be eliminated.

  Hereinafter, preferred embodiments of a cooling device according to the present invention will be described in detail with reference to the accompanying drawings. In the following, for convenience of explanation, a cooling device applied to a vending machine will be described.

<Embodiment 1>
1 is a front sectional view of a vending machine to which a cooling device according to Embodiment 1 of the present invention is applied, and FIG. 2 is a side sectional view of the vending machine shown in FIG. In the following, the same components as those in the vending machines shown in FIGS. 17 and 18 are denoted by the same reference numerals, and the description thereof is omitted.

  1 and 2, the vending machine includes a cooling device 20. The cooling device 20 includes a plurality of Stirling refrigerators 10a and 10b, and coolers 21a and 21b, radiators 22a and 22b, heat exchange ducts 23a and 23b, and air supply ducts 24a, corresponding to the Stirling refrigerators 10a and 10b. 24b and intake ducts 25a and 25b.

  The Stirling refrigerators 10a and 10b are both placed horizontally in the machine room 9 of the main body cabinet 1, and low temperature low temperature parts (cold heat parts) 11a and 11b generated by operation and high temperature high temperature parts ( High heat part) 12a, 12b.

  The coolers 21 a and 21 b are both disposed inside the machine room 9 of the main body cabinet 1. The cooler 21a transmits the cold heat from the low temperature part 11a of the Stirling refrigerator 10a to the heat exchange duct 23a, and cools the air inside the heat exchange duct 23a. On the other hand, the cooler 21b transmits the cold heat from the low temperature part 11b of the Stirling refrigerator 10b to the heat exchange duct 23b, and cools the air inside the heat exchange duct 23b. These coolers 21a and 21b will be described in more detail as follows.

  The coolers 21a and 21b each have a heat pipe as a heat transport means. The heat pipe encloses a refrigerant (working fluid) therein, and includes condensers 211a and 211b, evaporators 212a and 212b, liquid channels 213a and 213b, and vapor channels 214a and 214b. It is configured. Here, as the refrigerant, for example, a gas such as carbon dioxide that is a gas at normal temperature and does not freeze by the cold heat from the low temperature portions 11a and 11b of the Stirling refrigerators 10a and 10b (an antifreeze refrigerant) is used. .

  The condensing part 211a is thermally connected to the low temperature part 11a of the Stirling refrigerator 10a. In this condensing part 211a, a refrigerant | coolant condenses with the cold heat obtained from the low temperature part 11a, and turns into a condensed liquid. The evaporator 212a is disposed at a position separated from the condenser 211a by a predetermined distance. Although details will be described later in the evaporation unit 212a, the refrigerant is evaporated by the heat obtained from the outside into vapor. In other words, the area around the evaporation section 212a is cooled by the heat being removed by the evaporation of the refrigerant. The liquid channel 213a is a channel that connects the condensing unit 211a and the evaporating unit 212a. The liquid channel 213a is for moving the refrigerant condensed in the condensing unit 211a from the condensing unit 211a to the evaporating unit 212a. The vapor channel 214a is a channel that connects the condensing unit 211a and the evaporation unit 212a separately from the liquid channel 213a. The vapor channel 214a is for moving the refrigerant evaporated in the evaporation unit 212a from the evaporation unit 212a to the condensing unit 211a. The arrangement relationship between the liquid channel 213a and the vapor channel 214a is such that the vapor channel 214a is positioned above the liquid channel 213a. This is because the density of the refrigerant passing through the vapor channel 214a is smaller than the density of the refrigerant passing through the liquid channel 213a. As described above, such a heat pipe is provided with a liquid flow path 213a and a vapor flow path 214a separately, and is called a loop thermosiphon heat pipe.

  The condensing part 211b is thermally connected to the low temperature part 11b of the Stirling refrigerator 10b. In the condensing unit 211b, the refrigerant condenses into a condensate by the cold heat obtained from the low temperature unit 11b. The evaporator 212b is disposed at a position separated from the condenser 211b by a predetermined distance. Although details will be described later in the evaporation unit 212b, the refrigerant evaporates into vapor by heat obtained from the outside. In other words, the area around the evaporation section 212b is cooled by the heat being removed by the evaporation of the refrigerant. The liquid channel 213b is a channel that connects the condensing unit 211b and the evaporation unit 212b. The liquid channel 213b is for moving the refrigerant condensed in the condensing unit 211b from the condensing unit 211b to the evaporating unit 212b. The vapor channel 214b is a channel that connects the condensing unit 211b and the evaporation unit 212b separately from the liquid channel 213b. The vapor channel 214b is for moving the refrigerant evaporated in the evaporator 212b from the evaporator 212b to the condenser 211b. The arrangement relationship between the liquid channel 213b and the vapor channel 214b is such that the vapor channel 214b is located above the liquid channel 213b. This is because the density of the refrigerant passing through the vapor channel 214b is smaller than the density of the refrigerant passing through the liquid channel 213b. Such a heat pipe also has a liquid flow path 213b and a vapor flow path 214b separately, and is called a loop type thermosiphon heat pipe.

  Both the radiators 22 a and 22 b are disposed inside the machine room 9 of the main body cabinet 1. These radiators 22a and 22b are for releasing the high-temperature exhaust heat obtained from the high-temperature parts 12a and 12b of the Stirling refrigerators 10a and 10b to the outside of the vending machine, respectively. And a discharge fan 225a, 225b.

  The heat pipe has a refrigerant sealed therein, and includes evaporation units 221a and 221b, condensing units 222a and 222b, vapor channels 223a and 223b, and liquid channels 224a and 224b. . Here, as the refrigerant, for example, a liquid that is liquid at room temperature, such as water, and evaporates by high-temperature exhaust heat from the high-temperature portions 12a and 12b of the Stirling refrigerators 10a and 10b is used.

  The evaporation part 221a is thermally connected to the high temperature part 12a of the Stirling refrigerator 10a. In the evaporation part 221a, the refrigerant is evaporated by the high-temperature exhaust heat from the high-temperature part 12a to become vapor. The condensing unit 222a is disposed at a position separated from the evaporation unit 221a by a predetermined distance. Although details will be described later in the condensing unit 222a, the refrigerant dissipates the high-temperature exhaust heat to the ambient air and condenses into a condensed liquid. In other words, the ambient air around the condensing unit 222a is heated by the high-temperature exhaust heat. The steam channel 223a is a channel that connects the evaporation unit 221a and the condensing unit 222a. The vapor channel 223a is for moving the refrigerant evaporated in the evaporator 221a from the evaporator 221a to the condenser 222a. The liquid channel 224a is a channel that connects the evaporation unit 221a and the condensing unit 222a separately from the vapor channel 223a. The liquid channel 224a is for moving the refrigerant condensed in the condensing unit 222a from the condensing unit 222a to the evaporating unit 221a. The arrangement relationship between the vapor channel 223a and the liquid channel 224a is such that the vapor channel 223a is positioned above the liquid channel 224a. This is because the density of the refrigerant passing through the vapor channel 223a is smaller than the density of the refrigerant passing through the liquid channel 224a. As described above, such a heat pipe is provided with a vapor channel 223a and a liquid channel 224a separately, and is called a loop thermosiphon heat pipe.

  The evaporation part 221b is thermally connected to the high temperature part 12b of the Stirling refrigerator 10b. In the evaporation unit 221b, the refrigerant is evaporated by the high-temperature exhaust heat from the high-temperature unit 12b to become vapor. The condensing unit 222b is disposed at a position separated from the evaporation unit 221b by a predetermined distance. Although details will be described later in the condensing unit 222b, the refrigerant dissipates high-temperature exhaust heat to the ambient air and condenses into a condensed liquid. In other words, the ambient air around the condensing unit 222b is heated by the high-temperature exhaust heat. The steam channel 223b is a channel that connects the evaporation unit 221b and the condensation unit 222b. The vapor channel 223b is for moving the refrigerant evaporated in the evaporator 221b from the evaporator 221b to the condenser 222b. The liquid channel 224b is a channel that connects the evaporation unit 221b and the condensing unit 222b separately from the vapor channel 223b. The liquid flow path 224b is for moving the refrigerant condensed in the condensing unit 222b from the condensing unit 222b to the evaporating unit 221b. The arrangement relationship between the vapor channel 223b and the liquid channel 224b is such that the vapor channel 223b is positioned above the liquid channel 224b. This is because the density of the refrigerant passing through the vapor channel 223b is smaller than the density of the refrigerant passing through the liquid channel 224b. Such a heat pipe is also provided with a vapor channel 223b and a liquid channel 224b separately, and is called a loop thermosiphon heat pipe.

  The discharge blower fan 225a is disposed at a predetermined location in the peripheral area of the condenser 222a. This discharge blower fan 225a is for discharging the air heated by the condensation of the refrigerant in the condenser 222a to the outside of the vending machine. On the other hand, the discharge blower fan 225b is disposed at a predetermined location in the peripheral region of the condenser 222b. This discharge blower fan 225b is for discharging the air heated by the condensation of the refrigerant in the condenser 222b to the outside of the vending machine.

  The heat exchange duct 23a is a pipe line arranged in a manner surrounding the evaporating part 212a of the cooler 21a, and cools the air flowing through the inside. More specifically, the heat exchanging duct 23a cools the air flowing through the inside thereof as the refrigerant evaporates in the evaporating section 212a.

  The heat exchange duct 23b is a pipe line arranged in such a manner as to surround the evaporation part 212b of the cooler 21b, and cools the air flowing through the inside. If it demonstrates in detail, the heat exchange duct 23b will cool the air which flows through the inside, when a refrigerant | coolant evaporates in the evaporation part 212b. In addition, circulation air blowing fans 26a and 26b are disposed inside the heat exchange ducts 23a and 23b. The explanation of these circulation fans 26a and 26b will be described later.

  The air supply ducts (first ducts) 24a and 24b are conduits that connect the heat exchange ducts 23a and 23b to the insides of the product containers (product storage units) 5a, 5b, and 5c. If it demonstrates in detail, the air supply duct 24a will be for moving the air cooled with the heat exchange duct 23a to the inside of each goods storage 5a, 5b. The air supply duct 24a is connected to the heat exchange duct 23a and extends in a portion corresponding to the commodity storage 5a, 5b in the machine room 9 of the main body cabinet 1, and the first air supply duct 241a. A plurality of second air supply conduits 242a are provided which are connected to the air supply conduit 241a and extend so as to face the lower part of the front side (opening / closing side) inside each of the commodity containers 5a and 5b.

  The air supply duct 24b is for moving the air cooled by the heat exchange duct 23b to the inside of the commodity storage 5c. The air supply duct 24b is connected to the heat exchange duct 23b and is connected to the first air supply duct 241b extending in the width direction in the machine room 9 of the main body cabinet 1 and the first air supply duct 241b. The second air supply conduit 242b is provided to extend to face the lower part of the front side (opening / closing side) inside the commodity storage 5c.

  Each of the second air supply pipes 242a is provided with a gas outlet 2421a at the upper end portion thereof, and an air supply duct shutter (blocking means) 2422a is provided at a connection portion with the first air supply pipe line 241a. It is. The gas outlet 2421a is an opening for blowing out the cooled air from the heat exchange duct 23a. The air supply duct shutter 2422a is openable and closable. When the air supply duct shutter 2422a is in an open state, the air supply duct shutter 2422a maintains the communication state between the interiors of the product storage containers 5a and 5b and the heat exchange duct 23a. When the air supply duct shutter 2422a is closed, the communication state is blocked.

  The second air supply line 242b is provided with a gas outlet 2421b at the upper end portion thereof, and an air supply duct shutter (blocking means) 2422b is provided at a connection portion with the first air supply line 241b. is there. The gas outlet 2421b is an opening for blowing out the cooled air from the heat exchange duct 23b. The air supply duct shutter 2422b is openable and closable. When the air supply duct shutter 2422b is in an open state, the air supply duct shutter 2422b maintains the communication state between the interior of the product storage case 5c and the heat exchange duct 23b. When the air duct shutter 2422b is in a closed state, the communication state is blocked.

  The intake ducts (second ducts) 25 a and 25 b are pipelines that connect the interiors of the product containers 5 a, 5 b, and 5 c and the heat exchange duct 23. More specifically, the intake duct 25a is for moving the air (internal atmosphere) inside each of the commodity storages 5a and 5b to the heat exchange duct 23a. The intake duct 25a includes a plurality of first intake pipes 251a disposed on the back side inside each product storage 5a, 5b, and each first intake pipe 251a and the heat in the machine room 9 of the main body cabinet 1. A second intake pipe 252a that connects the exchange duct 23a is provided.

  The intake duct 25b is for moving the air (internal atmosphere) inside the commodity storage 5c to the heat exchange duct 23b. The intake duct 25b connects the first intake pipe 251b disposed on the back side inside the commodity storage 5c, and the first intake pipe 251b and the heat exchange duct 23b in the machine room 9 of the main body cabinet 1. The second intake pipe 252b is provided.

  Each first intake pipe 251a corresponds to a position corresponding to a predetermined height of a product group stored in the product storage rack 6 from the lower part of each product storage 5a, 5b, that is, a substantially intermediate region of the product group. It extends to the position. Each first intake pipe 251a has a gas inlet 2511a at its upper end and an intake duct shutter (blocking means) 2512a at the connection to the second intake pipe 252a. It is. The gas suction port 2511a is an opening for sucking air inside the product containers 5a and 5b. The intake duct shutter 2512a is openable and closable. When the intake duct shutter 2512a is in an open state, the intake duct shutter 2512a maintains the communication state between the interior of each product storage 5a, 5b and the heat exchange duct 23a. When the intake duct shutter 2512a is closed, the communication state is blocked.

  Each first intake pipe 251a has a front opening 2513a on the lower front side. In other words, the front opening 2513a is formed in a portion facing the heater H of the first intake pipe 251a. Each first intake pipe 251a is provided with an intake switching shutter 2514a for opening and closing the front opening 2513a. The intake air switching shutter 2514a is openable and closable. When the intake air switching shutter 2514a is open, the front opening 2513a is held in the open state, and when the intake air switching shutter 2514a is closed. In this case, the front opening 2513a is closed.

  The first intake pipe 251b extends from the lower part of the product storage 5c to a position corresponding to a predetermined height of the product group stored in the product storage rack 6, that is, a position corresponding to a substantially intermediate region of the product group. It is. Further, the first intake pipe 251b is provided with a gas inlet 2511b at the upper end portion thereof, and an intake duct shutter (blocking means) 2512b is provided at a connection portion with the second intake pipe 252b. It is. The gas suction port 2511b is an opening for sucking air inside the commodity storage 5c. The intake duct shutter 2512b is openable and closable. When the intake duct shutter 2512b is in an open state, the intake duct shutter 2512b maintains the communication state between the interior of the product storage case 5c and the heat exchange duct 23b. When the duct shutter 2512b is in a closed state, the communication state is blocked.

  The first intake pipe 251b has a front opening 2513b on the lower front side. In other words, the front opening 2513b is formed in a portion facing the heater H of the first intake pipe 251b. The first intake pipe 251b is provided with an intake switching shutter 2514b for opening and closing the front opening 2513b. The intake air switching shutter 2514b is openable and closable. When the intake air switching shutter 2514b is open, the front opening 2513b is held in the open state, and when the intake air switching shutter 2514b is closed. In this case, the front opening 2513b is closed.

  In the cooling device 20, the heat inside the product containers 5 a, 5 b, 5 c and the outside of the product containers 5 a, 5 b, 5 c via the air supply ducts 24 a, 24 b and the intake ducts 25 a, 25 b. An air circulation passage for circulating air between the exchange ducts 23a and 23b is formed. Further, as described above, the circulation fan 26a, 26b is disposed inside the heat exchange ducts 23a, 23b.

  The circulation fan 26a, 26b is for circulating the air inside the product storage 5a, 5b, 5c in the direction of the arrow in FIG. 2 through the air circulation channel. More specifically, the circulation fan 26a moves the air inside the commodity storage 5a, 5b to the heat exchange duct 23a through the intake duct 25a, and the air cooled by the heat exchange duct 23a It is for moving to the inside of the goods storage 5a, 5b through the air supply duct 24a. The circulation fan 26b moves the air inside the product storage 5c to the heat exchange duct 23b through the intake duct 25b, and the air cooled by the heat exchange duct 23b is sent to the product through the air supply duct 24b. It is for moving inside the storage 5c.

  The cooling device 20 having the above configuration cools the product W stored in the product storage 5a, 5b, 5c as follows. In the following description, for convenience of explanation, first, cooling of the product W stored in the product storage 5a, 5b will be described. Here, it is assumed that both the air supply duct shutter 2422a and the intake duct shutter 2512a are in the open state, and the intake air switching shutter 2514a is in the closed state.

  In the cooler 21a of the cooling device 20, the cold heat from the low temperature part 11a of the Stirling refrigerator 10a is transmitted to the heat exchange duct 23a as follows to cool the air inside the heat exchange duct 23a. The refrigerant that has been rapidly cooled in the condensing unit 211a that is thermally connected to the low temperature unit 11a and has become a condensate moves to the evaporation unit 212a through the liquid channel 213a by gravity. In the evaporation section 212a, the refrigerant is evaporated by the heat inside the heat exchange duct 23a surrounding the evaporation section 212a to become a vapor. That is, the air inside the heat exchange duct 23a is deprived of heat, and thereby the air inside the heat exchange duct 23a is cooled. By the way, the refrigerant evaporated into vapor in the evaporation unit 212a moves to the condensing unit 211a through the vapor channel 214a, becomes a condensate again in the condensing unit 211a, and repeats the above cycle.

  On the other hand, in the radiator 22a of the cooling device 20, the high temperature exhaust heat from the high temperature part 12a of the Stirling refrigerator 10a is released to the outside of the vending machine as follows. The refrigerant that has evaporated to vapor in the evaporation unit 221a that is thermally connected to the high temperature unit 12a moves to the condensation unit 222a through the vapor channel 223a. In the condensing unit 222a, the refrigerant is cooled by heat from the peripheral region of the condensing unit 222a to become a condensed liquid. That is, the air in the peripheral region of the condensing unit 222a is heated by being supplied with heat from the refrigerant. And the heated air will be discharge | released outside the vending machine by the ventilation fan 225a for discharge | release. Therefore, the high temperature exhaust heat from the high temperature part 12a of the Stirling refrigerator 10a is released to the outside of the vending machine by the radiator 22a. By the way, the refrigerant cooled to the condensate in the condensing unit 222a moves to the evaporating unit 221a through the liquid flow path 224a, becomes vapor again in the evaporating unit 221a, and repeats the above cycle.

  As shown by the arrows in FIG. 2, the air (internal atmosphere) inside the product containers 5a and 5b is caused by the action of the circulation blower fan 26a so that the intake duct 25a, the heat exchange duct 23a, and the air supply duct 24a. And it circulates through the inside of the product storage 5a, 5b. More detailed description is as follows.

  The air inside the product storage 5a, 5b enters the intake duct 25a from the gas inlet 2511a by the action of the circulation fan 26a and moves to the heat exchange duct 23a through the intake duct 25a. It is cooled in the duct 23a.

  The cooled air moves through the first air supply conduit 241a and the second air supply conduit 242a of the air supply duct 24a to each product storage 5a, 5b, and inside the product storage 5a, 5b, the front surface thereof. It moves in a mode in which it blows out from the gas outlet 2421a at the lower part of the side toward the gas inlet 2511a at the back side. That is, the cooled air passes through the product group stored in the product storage rack 6. More specifically, the cooled air passes through the product group below the product group stored in the product storage rack 6. Moving. The air thus cooled moves in such a manner as to pass through the product group, whereby heat exchange is performed between the cooled air and the product W, and the product W is cooled.

  The air heated by the heat exchange with the product W again enters the first intake pipe 251a from the gas suction port 2511a, and passes through the first intake pipe 251a and the second intake pipe 252a. It moves to the heat exchange duct 23a. And it cools again in this heat exchange duct 23a, and repeats the circulation mentioned above.

  Thus, by circulating air between the heat exchange duct 23a and the inside of each product storage 5a, 5b, the temperature of the air inside each product storage 5a, 5b is maintained at 0 ° C., for example. In this way, the product W can be brought to a suitable sales temperature, for example, 5 ° C.

  Next, cooling of the product W accommodated in the product storage 5c will be briefly described. Here, it is assumed that both the air supply duct shutter 2422b and the intake duct shutter 2512b are in the open state, and the intake air switching shutter 2514b is in the closed state.

  In the cooler 21b of the cooling device 20, the cold heat from the low temperature part 11b of the Stirling refrigerator 10b is transmitted to the heat exchange duct 23b to cool the air inside the heat exchange duct 23b.

  The air (internal atmosphere) in the product storage 5c is the same as that indicated by the arrow in FIG. 2 by the action of the circulation fan 26b, and the intake duct 25b, the heat exchange duct 23b, and the air supply duct. It circulates in the inside of 24b and goods storage 5c. That is, the air inside the product container 5c enters the intake duct 25b from the gas inlet 2511b by the action of the circulation fan 26b, moves to the heat exchange duct 23 through the intake duct 25b, and performs this heat exchange. It is cooled in the duct 23.

  The cooled air moves to the product storage 5c through the first air supply conduit 241b and the second air supply conduit 242b of the air supply duct 24b, and inside the product storage 5c, a gas suction port from the gas outlet 2421b. It moves toward 2511b in such a manner that it passes through the product group stored in the product storage rack 6. The air thus cooled moves in such a manner as to pass through the product group, whereby heat exchange is performed between the cooled air and the product W, and the product W is cooled.

  The air that has undergone heat exchange with the product W again enters the first intake pipe 251b from the gas suction port 2511b, and passes through the first intake pipe 251b and the second intake pipe 252b to form a heat exchange duct. It moves to 23b, is cooled again in this heat exchange duct 23b, and repeats the circulation mentioned above.

  Thus, by circulating air between the heat exchange duct 23b and the inside of the product storage 5c, the temperature of the air inside the product storage 5c can be maintained at, for example, 0 ° C., thereby The product W can be set at a suitable sales temperature, for example, 5 ° C.

  On the other hand, when heating the product W accommodated in any of the product storage 5a, 5b, 5c, the cooling device 20 can be used for heating the product W as follows. Below, the goods W accommodated in the goods storage 5a are demonstrated as a heating object goods.

  The cooling device 20 is brought into the following state. The air supply duct shutter 2422a of the second air supply line 242a communicating with the commodity storage 5a is closed. Thereby, the communication state between the inside of the product storage case 5a through the air supply duct 24a and the heat exchange duct 23a is blocked. Further, the intake duct shutter 2512a in the first intake pipe line 251a disposed on the back side inside the commodity storage 5a is closed. Thereby, the communication state between the inside of the commodity storage 5a and the heat exchange duct 23a through the intake duct 25a is blocked. Further, the intake air switching shutter 2514a in the first intake pipe line 251a is opened. As a result, the front opening 2513a of the first intake pipe 251a is opened.

  In the cooling device 20 in such a state, the inside of the commodity storage 5a and the heat exchange duct 23a are not in communication. Therefore, the air cooled by the heat exchange duct 23a does not move to the inside of the commodity storage 5a. And while turning on the heater H inside the goods storage 5a, the internal fan F is driven. As a result, the air heated by the heater H is blown from the lower side of the product carry-out shooter 8 by the action of the internal blower fan F as shown in FIG. 3, and circulates as shown by the arrows in FIG. To do. More detailed description is as follows. The heated air moves in such a manner that it passes through the product group below the product group stored in the product storage rack 6.

  When the heated air moves so as to pass through the product group, heat exchange is performed between the heated air and the product W, and the product W is heated. Air that has undergone heat exchange with the product W enters the first intake pipe 251a through the gas suction port 2511a, and moves to the heater H through the front opening 2513a. Then, the heater H is heated again and circulates by repeating the movement described above.

  In this way, the heater H is turned on so that the heated air circulates inside the product storage 5a, and the internal blower fan F is intermittently driven, so that the temperature of the product W is set to an appropriate sales temperature (for example, 55 ° C.).

  The cooling device 20 will be generally described. The heat exchange ducts 23a and 23b, the air supply ducts 24a and 24b, the intake ducts 25a and 25b, and the circulation blower fans 26a and 26b are arranged inside the product storage boxes 5a, 5b, and 5c. The internal atmosphere circulating means is configured to circulate the air between the inside and outside of the commodity storage 5a, 5b, 5c. In addition, the coolers 21a and 21b and the heat exchange ducts 23a and 23b constitute a cooling unit that cools the air by using cold heat from the plurality of Stirling refrigerators 10a and 10b.

  According to the cooling device 20 according to the first embodiment of the present invention as described above, the inside of the product storage 5a, 5b, 5c and the outside thereof via the intake ducts 25a, 25b and the air supply ducts 24a, 24b. A plurality of Stirlings that are circulated between the heat exchanger ducts 23a and 23b in the product storage 5a, 5b, and 5c and are transmitted by the coolers 21a and 21b in the heat exchanger ducts 23a and 23b. Since the air is cooled by the cold heat of the refrigerators 10a and 10b, the product W inside the product storage 5a, 5b and 5c can be cooled by the cooled air. Therefore, the goods W accommodated in the goods storage 5a, 5b, 5c can be favorably cooled using the cold heat from the low temperature parts 11a, 11b of the plurality of Stirling refrigerators 10a, 10b.

  According to the cooling device 20, since cooling is performed using the cold generated from the plurality of Stirling refrigerators 10a and 10b, the cooling load in one Stirling refrigerator can be reduced. Here, the Stirling refrigerator normally performs a refrigeration operation corresponding to a cooling load by changing the refrigeration output by voltage control. Therefore, if the cooling load of one Stirling refrigerator can be reduced, the change width of the refrigerating output of each Stirling refrigerator 10a (10b) can be reduced. Accordingly, each Stirling refrigerator 10a (10b) can be more reliably operated in the vicinity of the maximum cooling efficiency at which the cooling efficiency is maximized, and as a result, the cooling efficiency of the product W can be increased. it can. Further, since a plurality of Stirling refrigerators 10a and 10b are used, the cooling capacity of each Stirling refrigerator 10a (10b) can be reduced as compared with the case where a single Stirling refrigerator is used. . Therefore, the machine room 9 in which the Stirling refrigerators 10a and 10b are disposed can be made the minimum necessary size.

  Further, according to the cooling device 20, the radiators 22a and 22b release the high-temperature exhaust heat from the high-temperature portions 12a and 12b of the Stirling refrigerators 10a and 10b to the outside of the vending machine. In 1), there is no possibility that the cold heat from the low temperature portions 11a and 11b of the Stirling refrigerators 10a and 10b is alleviated by the high temperature exhaust heat. Therefore, the cold heat from the low temperature parts 11a and 11b of the Stirling refrigerators 10a and 10b can be used effectively.

  Further, according to the cooling device 20, the air supply duct shutters 2422a and 2422b and the intake duct shutters 2512a and 2512b are closed as necessary, so that the product containers 5a, 5b. The communication state between the inside of 5c and the heat exchange ducts 23a and 23b can be blocked. Therefore, the air cooled by the heat exchange ducts 23a and 23b is not circulated between the inside of the predetermined commodity storage. Accordingly, the product W inside such a predetermined product storage can be heated by the heater H and can be used for heating the product W. Therefore, in the vending machine provided with the cooling device 20, the product W can be cooled and heated at the same time for each of the product containers 5a, 5b, 5c.

<Embodiment 2>
4 is a front cross-sectional view of a vending machine to which the cooling device according to Embodiment 2 of the present invention is applied, and FIG. 5 is a side cross-sectional view of the vending machine shown in FIG. In the following, the same components as those in the vending machines shown in FIGS. 17 and 18 are denoted by the same reference numerals, and the description thereof is omitted. In addition, components having the same configuration as the cooling device 20 according to the first embodiment are given the same reference numerals and description thereof is omitted.

  4 and 5, the vending machine includes a cooling device 30. The cooling device 30 includes a plurality of Stirling refrigerators 10a and 10b, and coolers 21a and 21b, radiators 22a and 22b, a heat exchange duct 33, an air supply duct 34, and an intake duct 35 corresponding thereto. It is.

  As shown in FIG. 6, the heat exchange duct 33 is a pipe line arranged in such a manner as to surround the evaporation section 212 a of the cooler 21 a and the evaporation section 212 b of the cooler 21 b, and the air flowing through the duct It is what cools. More specifically, the heat exchanging duct 33 cools the air flowing through the inside thereof as the refrigerant evaporates in the evaporating sections 212a and 212b.

  The air supply duct 34 is a pipe line that connects the heat exchange duct 33 and the insides of the product containers 5a, 5b, and 5c. If it demonstrates in detail, the air supply duct 34 will move the air cooled with the heat exchange duct 33 to the inside of each goods storage 5a, 5b, 5c. The air supply duct 34 is connected to the heat exchange duct 33 and is connected to the third air supply duct 341 extending in the width direction in the machine room 9 of the main body cabinet 1 and the third air supply duct 341. The plurality of fourth air supply conduits 342 extended to face the lower part of the front side (opening / closing side) inside each of the commodity storages 5a, 5b, 5c.

  Each fourth air supply line 342 is provided with a gas outlet 3421 at the upper end portion thereof, and an air supply duct shutter (blocking means) 3422 is provided at a connection portion with the third air supply line 341. It is. The gas outlet 3421 is an opening for blowing out the cooled air from the heat exchange duct 33. The air supply duct shutter 3422 is openable and closable. When the air supply duct shutter 3422 is in an open state, the communication state between the inside of each of the commodity storages 5a, 5b, 5c and the heat exchange duct 33 is maintained. When the air supply duct shutter 3422 is closed, the communication state is cut off.

  The intake duct 35 is a pipe line that connects the interior of the commodity storage 5 a, 5 b, 5 c and the heat exchange duct 33. More specifically, the intake duct 35 is for moving the air (internal atmosphere) inside each of the commodity storages 5 a, 5 b, 5 c to the heat exchange duct 33. The intake duct 35 includes a plurality of third intake pipes 351 disposed on the back side inside each product storage 5a, 5b, 5c, and each third intake pipe 351 in the machine room 9 of the main body cabinet 1. And a fourth intake pipe 352 connecting the heat exchange duct 33.

  Each of the third intake pipes 351 is located at a position corresponding to a predetermined height of the product group stored in the product storage rack 6 from the lower part of each product storage 5a, 5b, 5c, that is, in a substantially middle region of the product group. It extends to the corresponding position. Each third intake pipe 351 is provided with a gas inlet 3511 at the upper end portion thereof, and an intake duct shutter (blocking means) 3512 is provided at a connection portion with the fourth intake pipe 352. It is. The gas suction port 3511 is an opening for sucking the air inside the product containers 5a, 5b, 5c. The intake duct shutter 3512 is openable and closable. When the intake duct shutter 3512 is open, the intake duct shutter 3512 maintains the communication state between the interiors of the product storage containers 5a, 5b, and 5c and the heat exchange duct 33. When the intake duct shutter 3512 is closed, the communication state is blocked.

  Each third intake pipe 351 is formed with a front opening 3513 on the lower front side. In other words, the front opening 3513 is formed in a portion facing the heater H of the first intake pipe 351. Each third intake pipe 351 is provided with an intake switching shutter 3514 for opening and closing the front opening 3513. The intake air switching shutter 3514 is openable and closable. When the intake air switching shutter 3514 is open, the front opening 3513 is held in an open state, and when the intake air switching shutter 3514 is closed. In this case, the front opening 3513 is closed.

  In the cooling device 30, the inside of each of the product containers 5 a, 5 b, 5 c and the heat exchange duct 33 outside the product containers 5 a, 5 b, 5 c via the air supply duct 34 and the intake duct 35. An air circulation passage for circulating air between them is formed. A circulation fan 26 is disposed inside the heat exchange duct 33.

  The circulation blower fan 26 circulates the air inside the product storage 5a, 5b, 5c in the direction of the arrow in FIG. 5 through the air circulation channel. More specifically, the circulation fan 26 moves the air inside the product storage 5a, 5b, 5c to the heat exchange duct 33 through the intake duct 35, and is cooled by the heat exchange duct 33. Is moved to the inside of the commodity storage 5a, 5b, 5c through the air supply duct 34.

  The cooling device 30 having the above configuration cools the product W stored in the product storage 5a, 5b, 5c as follows. Here, it is assumed that the air supply duct shutter 3422 and the intake duct shutter 3512 are both in the open state, and the air supply switching shutter 3514 is in the closed state.

  As shown by the arrows in FIG. 5, the air (internal atmosphere) inside the product storage 5 a, 5 b, 5 c is circulated through the intake duct 35, the heat exchange duct 33, and the air supply by the action of the circulation fan 26. It circulates through the inside of the duct 34 and the goods storage 5a, 5b, 5c. More detailed description is as follows.

  The air inside the product containers 5 a, 5 b, 5 c enters the intake duct 35 from the gas inlet 3511 by the action of the circulation fan 26 and moves to the heat exchange duct 33 through the intake duct 35. In the heat exchange duct 33, the air is cooled by the cold heat transmitted from each of the coolers 21a and 21b.

  The cooled air travels through the air supply duct 34 to each of the product storage containers 5a, 5b, 5c, and the third air supply conduit 341 of the air supply duct 34 inside each of the product storage containers 5a, 5b, 5c. It moves in a mode of blowing from the gas outlet 3421 toward the gas inlet 3511. That is, the cooled air moves so as to pass through the product group stored in the product storage rack 6. The air thus cooled moves in such a manner as to pass through the product group, whereby heat exchange is performed between the cooled air and the product W, and the product W is cooled.

  The air heated by the heat exchange with the product W again enters the third intake pipe 351 from the gas suction port 3511, and passes through the third intake pipe 351 and the fourth intake pipe 352. It moves to the heat exchange duct 33. And it cools again in this heat exchange duct 33, and repeats the circulation mentioned above.

  Thus, by circulating air between the heat exchange duct 33 and the inside of each product storage 5a, 5b, 5c, the temperature of the air inside each product storage 5a, 5b, 5c is, for example, 0. The product W can be kept at a suitable temperature for sale, for example, 5 ° C.

  On the other hand, when heating the product W accommodated in any of the product storage containers 5a, 5b, 5c, the cooling device 30 can be used for heating the product W as follows. Below, the goods W accommodated in the goods storage 5a are demonstrated as a heating object goods.

  The cooling device 30 is brought into the following state. The air supply duct shutter 3422 of the fourth air supply line 342 leading to the product storage 5a is closed. Thereby, the communication state between the inside of the commodity storage 5 a and the heat exchange duct 33 through the air supply duct 34 is blocked. Further, the intake duct shutter 3512 in the third intake pipe line 351 disposed on the back side inside the commodity storage 5a is closed. Thereby, the communication state between the inside of the commodity storage 5 a and the heat exchange duct 33 through the intake duct 35 is blocked. Further, the intake air switching shutter 3514 in the third intake pipe line 351 is opened. As a result, the front opening 3513 of the third intake pipe 351 is opened.

  In the cooling device 30 in such a state, the interior of the commodity storage 5a and the heat exchange duct 33 are not in communication. Therefore, the air cooled by the heat exchange duct 33 does not move to the inside of the commodity storage 5a. And while turning on the heater H inside the goods storage 5a, the internal fan F is driven. As a result, the air heated by the heater H is blown from the lower side of the product carry-out shooter 8 by the action of the internal blower fan F as shown in FIG. 7, and circulates as shown by the arrows in FIG. To do. More detailed description is as follows. The heated air moves in such a manner that it passes through the product group below the product group stored in the product storage rack 6.

  When the heated air moves so as to pass through the product group, heat exchange is performed between the heated air and the product W, and the product W is heated. The air that has undergone heat exchange with the product W enters the third intake pipe 351 from the gas suction port 3511 and moves to the heater H through the front opening 3513. Then, the heater H is heated again and circulates by repeating the movement described above.

  In this way, the heater H is turned on so that the heated air circulates inside the product storage 5a, and the internal blower fan F is intermittently driven, so that the temperature of the product W is set to an appropriate sales temperature (for example, 55 ° C.).

  According to the cooling device 30 according to the second embodiment of the present invention as described above, the following operational effects can be achieved in addition to the operational effects exhibited by the cooling device 20 according to the first embodiment described above. That is, since the heat exchange duct 33 is disposed in such a manner as to surround the chillers 21a and 21b, the chilled heat from each of the plurality of Stirling refrigerators 10a and 10b can be unified, and the unified chilled heat can be used. Since the cooling is performed, the number of parts can be reduced.

  Further, the cooling device 30 according to the second embodiment can be modified as shown in FIG. In FIG. 8, the cooling device 30 'includes a plurality of Stirling refrigerators 10a and 10b, and a cooler 31, a radiator 22, a heat exchange duct 33, an air supply duct 34, and an intake duct 35 corresponding thereto. It is configured.

  The cooler 31 transmits the cold heat from the low temperature portions 11a and 11b of the Stirling refrigerators 10a and 10b to the heat exchange duct 33 to cool the air inside the heat exchange duct 33. The cooler 31 has a heat pipe as a heat transport means. The heat pipe has a refrigerant sealed therein, and is provided with condensing units 311a and 311b, an evaporating unit 312, liquid channels 313a and 313b, and vapor channels 314a and 314b.

  The condensing part 311a is thermally connected to the low temperature part 11a of the Stirling refrigerator 10a, and the condensing part 311b is thermally connected to the low temperature part 11b of the Stirling refrigerator 10b. In these condensing units 311a and 311b, the refrigerant is condensed by the cold heat obtained from the low temperature units 11a and 11b to become a condensed liquid. The evaporating unit 312 is disposed at a position separated by a predetermined distance from both the condensing units 311a and 311b. In the evaporation unit 312, the refrigerant is evaporated by the heat obtained from the outside into vapor. In other words, the surrounding area of the evaporating unit 312 is deprived of heat as the refrigerant evaporates and is cooled. The liquid channel 313 a is a channel that connects the condensing unit 311 a and the evaporation unit 312, and the liquid channel 313 b is a channel that connects the condensing unit 311 b and the evaporation unit 312. These liquid flow paths 313a and 313b are for moving the refrigerant condensed in each of the condensing units 311a and 311b to the evaporating unit 312. The steam channel 314 a is a channel that connects the condensing unit 311 a and the evaporation unit 312, and the vapor channel 314 b is a channel that connects the condensing unit 311 b and the evaporation unit 312. These vapor flow paths 314a and 314b are for moving the refrigerant evaporated in the evaporating unit 312 to the condensing units 311a and 311b, respectively.

  Also with such a cooling device 30 ′, the cooler 31 transmits cold heat from both of the plurality of Stirling refrigerators 10 a and 10 b to the heat exchange duct 33, so that the cold heat can be unified, and this unified cold heat Since the cooling is performed using this, the number of parts can be reduced.

<Embodiment 3>
FIG. 9 is a front sectional view of a vending machine to which the cooling device according to Embodiment 3 of the present invention is applied, and FIG. 10 is a side sectional view of the vending machine shown in FIG. In the following, the same components as those in the vending machines shown in FIGS. 17 and 18 are denoted by the same reference numerals, and the description thereof is omitted. In addition, components having the same configuration as the cooling devices 20 and 30 according to the first and second embodiments described above are denoted by the same reference numerals and description thereof is omitted.

  9 and 10, the vending machine includes a cooling device 40. The cooling device 40 includes a plurality of Stirling refrigerators 10a and 10c, a cooler 21a, radiators 22a and 22b, a heat exchange duct 23a, an air supply duct 24a, an intake duct 25a, and an internal heat exchange duct 48b. It is configured with.

  The Stirling refrigerator 10c has a low-temperature low-temperature part 11c that is generated when the Stirling refrigerator 10c operates, and a high-temperature high-temperature part 12c. And this Stirling refrigerator 10c is standingly arranged so that the low temperature part 11c may face the lower part of the goods storage 5a. A heat insulating member 47 such as a vacuum heat insulating material is disposed on the side peripheral surface of the low temperature portion 11c.

  The internal heat exchange duct (internal cooling means) 48 is disposed on the upper surface of the low temperature part 11c of the Stirling refrigerator 10c inside the commodity storage 5a. The internal heat exchange duct 48 is, for example, a heat sink or the like, and cools the air (internal atmosphere) inside the commodity storage 5a with cold heat from the low temperature portion 11c of the Stirling refrigerator 10c.

  In the cooling device 40 having the above-described configuration, the internal heat exchange duct 48 exchanges heat with the air inside the product storage case 5a by the cold heat from the low temperature portion 11c of the Stirling refrigerator 10c, and as a result, the air Cool down. The cooled air is blown from the lower side of the product carry-out shooter 8 by the action of the internal blower fan F, and circulates as shown by the arrows in FIG. More specifically, the cooled air moves so as to pass through the lower product group among the product groups stored in the product storage rack 6, and returns to the internal heat exchange duct 48 via the circulation duct 56. become. Thereby, the product W stored in the product storage rack 6 can be cooled.

  On the other hand, when heating the product W stored in the product storage 5a, the operation of the Stirling refrigerator 10c is stopped, the heater H is turned on, and the internal fan F is driven. As a result, the air heated by the heater H moves in such a manner that it passes through the product group stored in the product storage rack 6 from the lower side of the product carry-out shooter 8 by the action of the internal fan F. Thereby, the product W stored in the product storage rack 6 can be heated.

  According to the cooling device 40 according to the third embodiment of the present invention as described above, the following operational effects can be achieved in addition to the operational effects exhibited by the cooling device 20 according to the first embodiment described above. That is, since the Stirling refrigerator 10c is erected in such a manner that the low temperature portion 11c is located inside the product storage 5a, the air inside the product storage 5a is directly passed through the internal heat exchange duct 48. Can be cooled. For this reason, a so-called heat exchange loss caused by heat transfer of the cold heat from the low temperature portion 11 is not generated. Therefore, the product W can be cooled by effectively using the cold generated in the low temperature part 11c.

<Embodiment 4>
FIG. 11 is a conceptual diagram conceptually showing the cooling apparatus according to Embodiment 4 of the present invention. In the following description, the same components as those shown in FIGS. 17 and 18 are denoted by the same reference numerals, and the description thereof is omitted. Also, those having the same configuration as those of the above-described first to third embodiments are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 11, the cooling device 50 includes a plurality of Stirling refrigerators 10a and 10b, and coolers 21a and 21b, a radiator (high-temperature exhaust heat release means) 52, a heat exchange duct 33, and an air supply duct 34 corresponding thereto. And an intake duct 35.

  The radiator 52 is for releasing the high-temperature exhaust heat obtained from the high-temperature portions 12a and 12b of the Stirling refrigerators 10a and 10b to the outside of the vending machine. The radiator 52 includes a heat pipe as a high-temperature exhaust heat transport means, a heat radiation fan 525, and circulation pumps 526a and 526b.

  The heat pipe has a refrigerant (working fluid) such as water sealed therein, and evaporates 521a and 521b, condensers 522a and 522b, vapor channels 523a and 523b, and liquid channels 524a and 524b. And is configured.

  The evaporation part 521a is thermally connected to the high temperature part 12a of the Stirling refrigerator 10a, and the evaporation part 521b is thermally connected to the high temperature part 12b of the Stirling refrigerator 10b. In these evaporation sections 521a and 521b, the refrigerant evaporates into steam by the high-temperature exhaust heat obtained from the high-temperature sections 12a and 12b.

  The condensing unit 522a is disposed inside an integrated heat exchanger (integrated discharge unit) 527 located at a predetermined distance from both of the Stirling refrigerators 10a and 10b. In the condensing unit 522a, the refrigerant dissipates the high-temperature exhaust heat to the ambient air and condenses into a condensed liquid. In other words, the ambient air around the condensing unit 522a is heated by the high-temperature exhaust heat. The condensing unit 522b is also disposed inside the integrated heat exchanger 527 in the same manner as the condensing unit 521a. In the condensing unit 522b, the refrigerant dissipates the high-temperature exhaust heat to the ambient air and condenses into a condensed liquid. In other words, the ambient air around the condensing unit 522b is heated by the high-temperature exhaust heat.

  The vapor flow path 523a is a flow path that connects the evaporation section 521a and the condensation section 522a, and the vapor flow path 523b is a flow path that connects the evaporation section 521b and the condensation section 522b. These vapor flow paths 523a and 523b are for moving the refrigerant evaporated in each of the evaporation sections 521a and 521b to the condensation sections 522a and 522b.

  The liquid flow path 524a is a flow path that connects the evaporation section 521a and the condensation section 522a, and the liquid flow path 524b is a flow path that connects the evaporation section 521b and the condensation section 522b. These liquid flow paths 524a and 524b are for moving the refrigerant condensed in the condensing parts 522a and 522b to the evaporating parts 521a and 521b.

  The heat dissipation fan 525 is for sending outside air into the integrated heat exchanger 527. Circulation pumps 526a and 526b are provided in the middle of the liquid flow paths 524a and 524b, respectively, for circulating the refrigerant. As described above, the integrated heat exchanger 527 has the condensing parts 522a and 522b disposed therein. More specifically, as shown in FIGS. 12 and 13, the condensing parts 522a and 522b have flow paths 5221a and 5221b having meandering shapes, respectively. And these flow paths 5221a and 5221b are arrange | positioned along the up-down direction in the aspect which becomes mutually parallel with the flow of the external air which approachs the inside of the integrated heat exchanger 527 mutually. Moreover, the code | symbol 528 in FIG. 12 and FIG. 13 is a fin for heat exchange.

  In the cooling device 50 having the above-described configuration, when the circulation pumps 526a and 526b are operated, the refrigerant circulates through the evaporation units 521a and 521b, the vapor channels 523a and 523b, the condensing units 522a and 522b, and the liquid channels 524a and 524b. It will be. More specifically, the refrigerant evaporates by high-temperature exhaust heat from the Stirling refrigerators 10a and 10b in the evaporation units 521a and 521b to become vapor, and reaches the condensing units 522a and 522b through the vapor channels 523a and 523b. The condensation units 522a and 522b condense into a condensate, and reach the evaporation units 521a and 521b through the liquid flow paths 524a and 524b. That is, the refrigerant circulates while repeating the phase change. As the refrigerant circulates in this way, the high-temperature exhaust heat generated in each of the Stirling refrigerators 10a and 10b is transported to the integrated heat exchanger 527 in which the condensing units 522a and 522b are disposed. In the integrated heat exchanger 527, heat is exchanged between the refrigerant and the outside air (cold air), and the high-temperature exhaust heat from the Stirling refrigerators 10a and 10b is released to the outside of the vending machine together with the outside air. become.

  According to the cooling device 50 as described above, in addition to the operational effects exhibited by the cooling device 20 according to the first embodiment described above, the following operational effects can be achieved. That is, since the heat radiator 52 unifies the high-temperature exhaust heat from both of the plurality of Stirling refrigerators 10a and 10b by the integrated heat exchanger 527, and releases the integrated high-temperature exhaust heat to the outside of the vending machine. It is possible to reduce the number of parts such as fans and heat exchange fins, thereby reducing costs.

  According to the cooling device 50, since the condensing parts 522a and 522b of the heat pipes are arranged inside the integrated heat exchanger 527 and concentrated in one place, the condensing parts are arranged in different places. In comparison, it is possible to expand the heat transfer area for heat exchange, thereby improving the heat dissipation efficiency for releasing the high-temperature exhaust heat generated in the Stirling refrigerators 10a and 10b. Such an improvement in heat dissipation efficiency causes an improvement in the cooling efficiency of the Stirling refrigerators 10a and 10b, and an energy saving operation can be performed. Further, since the condensing units 522a and 522b are concentrated in one place, it is possible to increase the diameter of the heat dissipation fan 525 for sending outside air into the integrated heat exchanger 527. Therefore, the integrated heat exchange The amount of air sent into the interior of the vessel 527 can be increased, and this can also improve the heat dissipation efficiency. Thus, by expanding the heat transfer area and the diameter of the heat dissipation fan 525, for example, when only one of the plurality of Stirling refrigerators 10a and 10b is operated (when only the Stirling refrigerator 10b is operated). However, the heat dissipation efficiency can be improved.

  Further, according to the cooling device 50, the flow paths 5221a and 5221b of the condensing units 522a and 522b are arranged along the vertical direction in a manner that is parallel to the flow of the outside air. Will pass through the inside of the integrated heat exchanger 527, so that heat exchange can be performed satisfactorily at any location, and the bias of the heat radiation efficiency can be eliminated.

  The cooling device 50 according to the fourth embodiment can be modified as shown in FIGS. 14 and 15. That is, the meandering flow paths 5221a and 5221b of the condensing parts 522a and 522b are alternately arranged along the vertical direction in a manner in which the flow paths 5221a and 5221b are parallel to the flow of outside air entering the integrated heat exchanger 527. It is arranged. Even with such a configuration, outside air having substantially the same temperature passes through the integrated heat exchanger 527, so that heat exchange can be performed satisfactorily at any location, and unevenness in heat dissipation efficiency can be eliminated. it can.

<Embodiment 5>
FIG. 16 is a conceptual diagram conceptually showing the cooling apparatus according to Embodiment 5 of the present invention. In the following description, the same components as those shown in FIGS. 17 and 18 are denoted by the same reference numerals, and the description thereof is omitted. Also, those having the same configuration as those of the first to fourth embodiments are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 16, the cooling device 60 includes a plurality of Stirling refrigerators 10a and 10b, and coolers 21a and 21b, a radiator (high-temperature exhaust heat release means) 62, a heat exchange duct 33, and an air supply duct 34 corresponding thereto. And an intake duct 35.

  The radiator 62 is for releasing the high-temperature exhaust heat obtained from the high-temperature portions 12a and 12b of the Stirling refrigerators 10a and 10b to the outside of the vending machine. The radiator 62 includes a heat pipe (high temperature exhaust heat transport means) as a heat transport means and a heat radiation fan 625.

  The heat pipe has a refrigerant such as water sealed therein, and includes evaporation units 621a and 621b, condensing units 622a and 622b, vapor channels 623a and 623b, and liquid channels 624a and 624b. It is configured.

  The evaporation part 621a is thermally connected to the high temperature part 12a of the Stirling refrigerator 10a, and the evaporation part 621b is thermally connected to the high temperature part 12b of the Stirling refrigerator 10b. In these evaporation sections 621a and 621b, the refrigerant is evaporated by the high-temperature exhaust heat obtained from the high-temperature sections 12a and 12b to become vapor.

  The condensing unit 622a is disposed inside an integrated heat exchanger (integrated discharge unit) 627 located at a predetermined distance from both of the Stirling refrigerators 10a and 10b. In the condensing unit 622a, the refrigerant dissipates the high-temperature exhaust heat to the ambient air and condenses into a condensed liquid. In other words, the ambient air around the condenser 622a is heated by the high-temperature exhaust heat. The condensing unit 622b is also disposed inside the integrated heat exchanger 627 in the same manner as the condensing unit 621a. In the condensing unit 622b, the refrigerant dissipates the high-temperature exhaust heat to the ambient air and condenses into a condensed liquid. In other words, the air around the condensing unit 622b is heated by the high-temperature exhaust heat.

  The vapor flow path 623a is a flow path that connects the evaporation section 621a and the condensation section 622a, and the vapor flow path 623b is a flow path that connects the evaporation section 621b and the condensation section 622b. These vapor flow paths 623a and 623b are for moving the refrigerant evaporated in the evaporation units 621a and 621b to the condensation units 622a and 622b, respectively.

  The liquid flow path 624a is a flow path that connects the evaporation section 621a and the condensation section 622a, and the liquid flow path 624b is a flow path that connects the evaporation section 621b and the condensation section 622b. These liquid flow paths 624a and 624b are for moving the refrigerant condensed in the condensing units 622a and 622b to the evaporating units 621a and 621b. More specifically, the liquid channel 624a includes a first channel 6241a, a second channel 6242, and a third channel 6243a. The liquid channel 624b includes the first channel 6241b and the first channel 6241b. It has two flow paths 6242 and a third flow path 6243b. That is, the liquid flow paths 624a and 624b share the second flow path 6242 with each other. The first flow paths 6241a and 6241b are for moving the refrigerant condensed in the condensing units 622a and 622b to the second flow path 6242, respectively. The third flow paths 6243a and 6243b are evaporated from the second flow path 6242, respectively. This is for moving the refrigerant to the parts 621a and 621b. The second flow path 6242 is provided with a circulation pump 626 for circulating the refrigerant. This circulation pump 626 has a refrigerating capacity necessary for circulating the refrigerant well in each heat pipe, that is, has a larger flow capacity than a pump provided individually for each heat pipe. is there. The third flow paths 6243a and 6243b are provided with electromagnetic valves 629a and 629b for opening and closing the respective flow paths.

  The heat dissipation fan 625 is for sending outside air into the integrated heat exchanger 627. As described above, the integrated heat exchanger 627 has the condensing units 622a and 622b disposed therein.

  In the cooling device 60 having the above configuration, for example, when only one of the plurality of Stirling refrigerators 10a and 10b is operated (when only the Stirling refrigerator 10b is operated), the solenoid valve is operated while the circulation pump 626 is operated. By bringing 629a into a closed state, the refrigerant circulates through the evaporation unit 621b, the vapor channel 623b, the condensing unit 622b, and the liquid channel 624b. More specifically, the refrigerant evaporates by high-temperature exhaust heat from the Stirling refrigerator 10b in the evaporation unit 621b to become vapor, reaches the condensing unit 622b through the vapor channel 623b, and condenses in the condensing unit 622b. It becomes a condensate and reaches the evaporation section 621b through the liquid flow path 624b. That is, the refrigerant circulates while repeating the phase change. As the refrigerant circulates in this way, the high-temperature exhaust heat generated in the Stirling refrigerator 10b is transported to the integrated heat exchanger 627 in which the condensing unit 622b is disposed. In the integrated heat exchanger 627, heat is exchanged between the refrigerant and the outside air (cold air), and the high-temperature exhaust heat from the Stirling refrigerator 10b is released to the outside of the vending machine together with the outside air. .

  On the other hand, when only the Stirling refrigerator 10a is operated, the electromagnetic valve 629b is closed while the circulation pump 626 is operated, so that the refrigerant becomes the evaporation unit 621a, the vapor channel 623a, the condensing unit 622a, and The liquid channel 624a is circulated. In the integrated heat exchanger 627, heat exchange is performed between the refrigerant and the outside air (cold air), and the high-temperature exhaust heat from the Stirling refrigerator 10a is released to the outside of the vending machine together with the outside air. .

  According to the cooling device 60 as described above, in addition to the operational effects exhibited by the cooling devices 20 and 50 according to Embodiments 1 and 4 described above, the following operational effects can be achieved. That is, even when only one of the plurality of Stirling refrigerators 10a and 10b is operated, the high-temperature exhaust heat is transported only by the opening / closing operation of the electromagnetic valves 629a and 629b without stopping the circulation pump 626. The number of times of driving / stopping 626 can be reduced, whereby the service life of the circulation pump 626 can be increased and the reliability can be improved.

  Further, according to the cooling device 60, the circulation pump 626 has a flow capacity necessary to circulate the refrigerant satisfactorily in each heat pipe, so that only one Stirling refrigerator 10a, 10b is operated. In some cases, it is possible to increase the flow rate of the refrigerant circulating through one heat pipe, thereby improving the heat dissipation efficiency, and as a result, improving the cooling efficiency.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications can be made. In this invention, you may provide the adjustment means which can adjust suitably the moving amount | distance of the cooled air which moves to the inside of goods storage. By providing such an adjusting means, the amount of air movement can be increased when rapidly cooling the product inside the product storage. Therefore, it is possible to shorten the time required for rapid cooling of the product. In the above-described embodiment, the loop type thermosiphon heat pipe is used. However, the present invention is not limited to this, and heat exchange fins or the like may be used.

  As described above, the cooling device according to the present invention is useful for cooling the commodity accommodated in the commodity accommodating portion.

It is front sectional drawing of the vending machine to which the cooling device which concerns on Embodiment 1 of this invention was applied. It is a sectional side view of the vending machine shown in FIG. It is a sectional side view of the vending machine shown in FIG. It is front sectional drawing of the vending machine to which the cooling device which concerns on Embodiment 2 of this invention was applied. It is a sectional side view of the vending machine shown in FIG. It is the conceptual diagram which showed notionally the cooling device which concerns on Embodiment 2 of this invention. It is a sectional side view of the vending machine shown in FIG. It is front sectional drawing of the vending machine to which the modification of the cooling device which concerns on Embodiment 2 of this invention was applied. It is front sectional drawing of the vending machine to which the cooling device which concerns on Embodiment 3 of this invention was applied. FIG. 10 is a side sectional view of the vending machine shown in FIG. 9. It is the conceptual diagram which showed notionally the cooling device which concerns on Embodiment 4 of this invention. It is the conceptual diagram which showed notionally the internal structure of the integrated heat exchanger in FIG. It is the conceptual diagram which showed notionally the internal structure of the integrated heat exchanger in FIG. It is the conceptual diagram which showed notionally the modification of the internal structure of the integrated heat exchanger in FIG. It is the conceptual diagram which showed notionally the modification of the internal structure of the integrated heat exchanger in FIG. It is the conceptual diagram which showed notionally the cooling device which concerns on Embodiment 5 of this invention. It is front sectional drawing which showed the general vending machine. It is a sectional side view of the vending machine shown in FIG.

Explanation of symbols

10a, 10b, 10c Stirling refrigerator 11a, 11b, 11c Low temperature part 12a, 12b, 12c High temperature part 20, 30, 40, 50, 60 Cooling device 21a, 21b Cooler 211a, 211b Condensing part 212a, 212b Evaporating part 213a, 213b Liquid channel 214a, 214b Steam channel 22a, 22b Radiator 221a, 221b Evaporating unit 222a, 222b Condensing unit 223a, 223b Steam channel 224a, 224b Liquid channel 225a, 225b Discharging fan 23a, 23b Heat exchange duct 24a, 24b, 34 Air supply ducts 241a, 241b First air supply lines 242a, 242b Second air supply lines 2421a, 2421b Gas outlets 2422a, 2422b Air supply duct shutters 25a, 25b, 35 Intake ducts 251a, 2 1b First intake pipes 2511a, 2511b Gas suction ports 2512a, 2512b Intake duct shutters 2513 Front opening 2514 Intake switching shutters 252a, 252b Second intake pipes 26a, 26b Circulating fan 521a, 521b, 621a, 621b Evaporating part 522a, 522b, 622a, 622b Condensing section 523a, 523b, 623a, 623b Steam channel 524a, 524b, 624a, 624b Liquid channel 525, 625 Heat dissipating fan 526a, 526b, 626 Circulating pump 527, 627 Integrated heat exchanger

Claims (15)

In the cooling device for cooling the product stored in the product storage unit,
An internal atmosphere circulating means for circulating the internal atmosphere of the commodity accommodating portion between the inside and the outside of the commodity accommodating portion;
A plurality of Stirling refrigerators disposed outside the commodity storage unit;
A cooling device comprising: cooling means for cooling the internal atmosphere circulated by the internal atmosphere circulation means by using cold heat generated from each of the plurality of Stirling refrigerators. In the cooling device for cooling the product stored in the product storage unit,
An internal atmosphere circulating means for circulating the internal atmosphere of the commodity accommodating portion between the inside and the outside of the commodity accommodating portion;
A plurality of Stirling refrigerators disposed outside the commodity storage unit;
A cooling unit that unifies the cooling heat generated from each of the plurality of Stirling refrigerators, and that cools the internal atmosphere circulated by the internal atmospheric circulation unit using the integrated cooling heat. Cooling system. In the cooling device for cooling the product stored in the product storage unit,
A Stirling refrigerator disposed in such a manner that a cooling unit for generating cooling is located inside the commodity storage unit;
An internal cooling means that cools the internal atmosphere of the product storage unit using the cold generated in the cold heat unit. The internal atmosphere circulating means is
A first duct for moving the internal atmosphere cooled by the cooling means to the inside of the commodity accommodating portion;
A second duct for moving the internal atmosphere of the commodity accommodating portion to a place cooled by the cooling means,
The cooling device according to claim 1 or 2, wherein the internal atmosphere is circulated through the first duct and the second duct.   The said internal atmosphere circulation means is provided with the interruption | blocking means for interrupting | blocking the movement of the said internal atmosphere between the inside of the said product accommodating part, and the exterior. The cooling device according to any one of the above. In the cooling device for cooling the product stored inside the product storage unit using a plurality of Stirling refrigerators,
A cooling device comprising high-temperature exhaust heat release means for unifying high-temperature exhaust heat generated from each of the plurality of Stirling refrigerators and releasing the integrated high-temperature exhaust heat to the outside. The high temperature exhaust heat release means is
A plurality of high-temperature waste heat transporting means are provided corresponding to each of the plurality of Stirling refrigerators, and transport high-temperature exhaust heat generated from the Stirling refrigerator by transferring the heat to a working fluid enclosed therein. ,
7. The cooling apparatus according to claim 6, wherein the high-temperature exhaust heat transported by each high-temperature exhaust heat transporting means is discharged by unifying at the integrated discharge section.   The cooling device according to claim 7, wherein the plurality of high-temperature exhaust heat transporting means transports the high-temperature exhaust heat by moving the working fluid by a common pump. The plurality of high-temperature exhaust heat transport means includes
An evaporator that evaporates the working fluid by the high-temperature exhaust heat generated in the Stirling refrigerator;
A high-temperature exhaust heat is transported by circulating the working fluid while changing the phase between it and a condensing part that condenses the working fluid evaporated in the evaporation part that flows in the meandering flow path. Is what
8. The flow path of the condensing part in each high-temperature exhaust heat transporting means in the integrated discharge part is disposed along the vertical direction in a manner parallel to the flow of outside air. The cooling device according to 1. The plurality of high-temperature exhaust heat transport means includes
An evaporator that evaporates the working fluid by the high-temperature exhaust heat generated in the Stirling refrigerator;
A high-temperature exhaust heat is transported by circulating the working fluid while changing the phase between it and a condensing part that condenses the working fluid evaporated in the evaporation part that flows in the meandering flow path. Is what
In the integrated discharge part, the flow path of the condensing part in each high-temperature exhaust heat transport means is alternately arranged along the vertical direction in a manner parallel to the flow of outside air. Item 8. The cooling device according to Item 7.   The high temperature exhaust heat release means for unifying the high temperature exhaust heat generated from each of the plurality of Stirling refrigerators and releasing the unified high temperature exhaust heat to the outside is provided. The cooling device according to any one of the above. The high temperature exhaust heat release means is
A plurality of high-temperature waste heat transporting means are provided corresponding to each of the plurality of Stirling refrigerators, and transport high-temperature exhaust heat generated from the Stirling refrigerator by transferring the heat to a working fluid enclosed therein. ,
The cooling apparatus according to claim 11, wherein the high-temperature exhaust heat transported by each high-temperature exhaust heat transporting unit is unified and released by the integrated discharge unit.   The cooling device according to claim 12, wherein the plurality of high-temperature exhaust heat transporting means transports the high-temperature exhaust heat by moving the working fluid by a common pump. The plurality of high-temperature exhaust heat transport means includes
An evaporator that evaporates the working fluid by the high-temperature exhaust heat generated in the Stirling refrigerator;
A high-temperature exhaust heat is transported by circulating the working fluid while changing the phase between it and a condensing part that condenses the working fluid evaporated in the evaporation part that flows in the meandering flow path. Is what
13. The flow path of the condensing part in each high-temperature exhaust heat transport means in the integrated discharge part is arranged along the vertical direction in a manner parallel to the flow of outside air. The cooling device according to 1. The plurality of high-temperature exhaust heat transport means includes
An evaporator that evaporates the working fluid by the high-temperature exhaust heat generated in the Stirling refrigerator;
A high-temperature exhaust heat is transported by circulating the working fluid while changing the phase between it and a condensing part that condenses the working fluid evaporated in the evaporation part that flows in the meandering flow path. Is what
In the integrated discharge part, the flow path of the condensing part in each high-temperature exhaust heat transport means is alternately arranged along the vertical direction in a manner parallel to the flow of outside air. Item 13. The cooling device according to Item 12.

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