JP4604812B2 - Temperature control device - Google Patents

Description

  The present invention relates to a temperature control device, and more particularly, for example, cooling a product stored in a product storage box in a vending machine or the like using cold heat generated by a Stirling refrigerator or using a heater. Thus, the present invention relates to an improvement of a temperature adjustment device that adjusts to a desired temperature state.

  9 is a front sectional view showing a general vending machine, and FIG. 10 is a side sectional view of the vending machine shown in FIG. 9 and 10, 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 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. 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, the machine room 9 which is outside the commodity storage 5 a, 5 b, 5 c has a compressor 81 which is a component of the refrigerator, an external blower fan 82, a condenser (external heat exchanger). ) 83, an expansion mechanism 84, and the like. Inside the product storage 5a, 5b, 5c are provided an evaporator (internal heat exchanger) 85 and an internal fan 86, which are components of the refrigerator, and the evaporator 85. A circulation duct 87 is provided on the back side of the. In addition, the commodity storage 5a, 5b, 5c is provided with a heater 88 for heating.

  In such a vending machine, the product W can be cooled as follows. After turning off the heater 88, the refrigerator and the internal fan 86 are driven. Thereby, the cold air obtained by heat exchange with the evaporator 85 is blown out from the lower side of the product carry-out shooter 8 by the internal blower fan 86 and circulates as shown 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 85 through the circulation duct 87. Thus, by intermittently driving the refrigerator and the internal blower fan 86 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 the 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, the low-temperature cooling unit and the high-temperature high heat Part. 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 gas compression and expansion, the structure of the compression / expansion space is limited, and the area of the cooling and heating unit is limited to a small portion. Therefore, when cooling the product inside the product storage using such a Stirling refrigerator, the cooling heat obtained from the cooling 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. On the other hand, even when a product is heated, a means for efficiently transmitting the heat from the heater to the inside of each product storage and heating the product is required.

  In particular, in the conventional vending machine, because the installation space of the product containers 5a, 5b, 5c is limited, the internal fan 86 is arranged perpendicular to the bottom surface of the product containers 5a, 5b, 5c. It was set up. Therefore, the air blown from the internal fan 86 flows in the horizontal direction once and collides with the front wall, and then moves upward from the lower part of the product storage 5a, 5b, 5c to the product W. Heat exchange was taking place. Therefore, the heat obtained from the evaporator 85 and the heater 88 is lost by colliding with the wall, and heat loss occurs. In addition, since the air after having collided with the front wall is used to exchange heat with the product W, the temperature of the product W varies from the front side to the back side in the product storage 5a, 5b, 5c. I did it.

  In view of the above circumstances, an object of the present invention is to provide a temperature adjustment device that can satisfactorily adjust a product stored in a product storage to a desired temperature state.

In order to achieve the above object, a temperature control device according to claim 1 of the present invention communicates with the interior of a product storage through a product storage that stores the product, an air supply conduit and an intake conduit having a heat insulating structure. When the fan disposed in the air supply line is driven between the heat insulating container and the heat insulating container, the internal atmosphere of the commodity storage is passed in the order of the intake line, the heat insulating container, and the air supply line. An internal atmosphere circulation means for circulation, and an internal atmosphere cooling means for cooling the internal atmosphere circulated by the internal atmosphere circulation means by using cold heat generated by a Stirling refrigerator disposed outside the product storage. A temperature adjusting device configured to adjust a product stored in the product storage to a desired temperature state, wherein the fan serves as a boundary with the inside of the product storage in the air supply conduit. Of the products stored in the product container, the lower stage is arranged in a horizontal manner in a diameter-enlarged portion formed in a mode in which the diameter is expanded at a location facing the gas supply port, and is driven by itself. The internal atmosphere cooled by the internal atmosphere cooling means is blown radially upward through the gas supply port so as to directly collide with an object in the region .

The temperature adjustment device according to claim 2 of the present invention, Oite to the claim 1, wherein the fan is in a manner of passing a plurality of holes formed in the discharge chute for unloading the product, The internal atmosphere is blown, and the plurality of holes are formed in such a manner that an opening area gradually increases as the distance from the fan increases.

The temperature adjustment device according to claim 3 of the present invention, further comprising a louver for equalizing Oite to the claim 1 or the claim 2, the air volume distribution of the internal atmosphere of the fan is aeolian It is characterized by.

According to a fourth aspect of the present invention, there is provided the temperature adjusting device according to any one of the first to third aspects, wherein the internal atmosphere circulation is driven when cooling by the internal atmosphere cooling means is stopped. A heater for heating an internal atmosphere circulated by the means is provided, and the heater is disposed in the enlarged diameter portion .

  According to the temperature control apparatus of the present invention, the air blowing means blows the internal atmosphere cooled by the internal atmosphere cooling means in a mode of directly colliding with the commodity in the lower region among the goods accommodated in the commodity storage. In addition, the product can be cooled or heated without incurring heat loss due to collision with the wall as in the conventional structure, and the occurrence of temperature variations in the product in the lower region can be suppressed. it can. Therefore, not only the heat loss can be reduced, but the product can be heated or the time required for the heating can be shortened, and the product stored in the product storage can be well adjusted to a desired temperature state. There is an effect.

  Exemplary embodiments of a temperature control device according to the present invention will be described below in detail with reference to the accompanying drawings. In the following, for convenience of explanation, a temperature adjusting device applied to a vending machine will be described in detail.

<Embodiment 1>
1 and 2 each show a configuration of a vending machine to which the temperature control device according to Embodiment 1 of the present invention is applied. FIG. 1 is a side sectional view, and FIG. 2 is a front view. It is sectional drawing. In addition, the same code | symbol is attached | subjected to what has the structure same as the structure of the vending machine shown in FIG. 9 and FIG. 10, and the description is abbreviate | omitted.

  1 and 2, the temperature adjusting device includes a Stirling refrigerator 10, a cooling unit 20, a heat radiating unit 30, a circulation unit 40, and a heater H.

  The Stirling refrigerator 10 is placed horizontally in the machine room 9 of the main body cabinet 1 and has a low temperature part 11 that generates cold heat and a high temperature part 12 that generates high temperature exhaust heat when operated. Yes.

  The cooling unit 20 is disposed inside the machine room 9 of the main body cabinet 1. The cooling unit 20 transfers the cold heat generated from the low temperature part 11 of the Stirling refrigerator 10 to each of the plurality of heat insulating containers 41 constituting the circulation unit 40 to cool the air inside each heat insulating container 41. Is. The cooling unit 20 will be described in detail as follows.

  The cooling unit 20 has a plurality of refrigerant circulation channels. In the present embodiment, the cooling unit 20 has three independent refrigerant circulation channels. Each refrigerant circulation channel encloses a refrigerant therein, and includes a condensing heat exchanger 21, an evaporating heat exchanger 22, a liquid pipe 23, and a gas pipe 24. Here, as the refrigerant, for example, carbon dioxide or the like is used which is a gas at normal temperature and does not freeze with the cold heat from the low temperature portion 11 of the Stirling refrigerator 10 (an antifreeze refrigerant).

  The condensation heat exchanger 21 is thermally connected to the low temperature part 11 of the Stirling refrigerator 10. In the condensation heat exchanger 21, the refrigerant is condensed by the cold heat obtained from the low temperature part 11 to become a condensed liquid.

  The evaporating heat exchanger 22 is disposed at a position separated from the condensing heat exchanger 21 by a predetermined distance. More specifically, the evaporative heat exchanger 22 is accommodated in each of the heat insulating containers 41 disposed below the commodity storages 5a, 5b, 5c. This evaporative heat exchanger 22 is for cooling the air (internal atmosphere) of each commodity storage 5a, 5b, 5c. In the evaporative heat exchanger 22, the details will be described later, but the refrigerant is evaporated by the heat obtained from the outside into vapor. In other words, the internal air of the heat insulating container 41 which is the peripheral region of the evaporative heat exchanger 22 is cooled because heat is taken away as the refrigerant evaporates.

  The liquid pipe 23 is a pipe line that connects the condensation heat exchanger 21 and the evaporation heat exchanger 22. The liquid pipe 23 is for moving the refrigerant condensed in the condensation heat exchanger 21 from the condensation heat exchanger 21 to the evaporation heat exchanger 22.

  The gas pipe 24 is a pipe line that connects the condensation heat exchanger 21 and the evaporation heat exchanger 22 separately from the liquid pipe 23. The gas pipe 24 is for moving the refrigerant evaporated in the evaporating heat exchanger 22 from the evaporating heat exchanger 22 to the condensing heat exchanger 21.

  The arrangement of the liquid pipe 23 and the gas pipe 24 is such that the gas pipe 24 is positioned above the liquid pipe 23. This is because the density of the refrigerant passing through the gas pipe 24 is smaller than the density of the refrigerant passing through the liquid pipe 23. In such a configuration, as described above, the liquid pipe 23 and the gas pipe 24 are separately provided, which is called a loop-type thermosiphon heat pipe.

  The heat radiating unit 30 is for releasing the high-temperature exhaust heat obtained from the high-temperature part 12 of the Stirling refrigerator 10 to the outside of the vending machine. The heat radiating unit 30 has a refrigerant sealed therein, and includes a heat radiating heat exchanger 31, an air heat exchanger 32, a first transport line 33, and a second transport line 34. Here, various refrigerants can be used, and an antifreeze liquid is used as an example. Below, the case where an antifreeze liquid is used as an example of a refrigerant | coolant is demonstrated.

  The heat radiation heat exchanger 31 is thermally connected to the high temperature part 12 of the Stirling refrigerator 10. The radiant heat exchanger 31 is a component that causes the internal refrigerant to receive the high-temperature exhaust heat from the high-temperature portion 12.

  The air heat exchanger 32 is disposed at a position separated from the Stirling refrigerator 10 (radiation heat exchanger 31) by a predetermined distance. The air heat exchanger 32 radiates heat to the internal refrigerant. Although details will be described later in this air heat exchanger 32, the refrigerant radiates the high-temperature exhaust heat received by the heat dissipation heat exchanger 31 to the ambient air. Thereby, ambient air is heated by high temperature exhaust heat. An outside fan 35 is provided at a predetermined location around the air heat exchanger 32. The outside blower fan 35 is for releasing the outside air sent into the air heat exchanger 32 to the outside.

  The first transport line 33 is a pipe line that connects the heat radiation heat exchanger 31 and the air heat exchanger 32. The first transport line 33 is for moving the refrigerant that has received the high-temperature exhaust heat by the radiating heat exchanger 31 to the air heat exchanger 32.

  The second transport line 34 is a pipe line that connects the heat dissipation heat exchanger 31 and the air heat exchanger 32 separately from the first transport line 33. The second transport line 34 is for moving the refrigerant radiated by the air heat exchanger 32 to the radiant heat exchanger 31. The second transport line 34 is provided with a circulation pump for circulating the refrigerant (not shown in the figure). Therefore, in the heat dissipation unit 30, the refrigerant circulates between the heat dissipation heat exchanger 31 and the air heat exchanger 32 by the action of the circulation pump.

  The circulation unit 40 includes the heat insulating container 41, the back duct 42, and the internal fan F. As shown in FIG. 2, the heat insulating container 41 is disposed so as to be in contact with the bottom surface of the corresponding product storage 5 a, 5 b, 5 c. More specifically, a plurality of the heat insulating containers 41 are provided, and are arranged in such a manner that each of the heat insulating containers 41 is in contact with the bottom surface of the corresponding product storage 5a, 5b, 5c. And the heat insulation container 41 has the air supply pipe line 411 and the intake pipe line 412, and the air supply pipe line 411 is connected in the aspect which hold | maintains the heat insulation structure with the bottom face of corresponding goods storage 5a, 5b, 5c. The intake pipe 412 is connected to the rear duct 42 of the corresponding product storage 5a, 5b, 5c so as to maintain the heat insulating structure. The air supply pipe 411 has a structure in which the downstream side has a diameter larger than that of the upstream side, and the downstream side enlarged diameter portion 413 has a boundary with the inside of the corresponding product storage 5a, 5b, 5c. Is provided with a gas inlet 414. The intake pipe 412 is provided with a gas intake port 415 at the boundary with the rear duct 42. Accordingly, each heat insulating container 41 communicates with the corresponding product storage 5a, 5b, 5c through the gas supply port 414 and the gas intake port 415.

  The back duct 42 is disposed on the back side inside each product storage 5a, 5b, 5c. Although not clearly shown in the drawing, the rear duct 42 is connected to the product storage rack 6 from the lower part of each product storage 5a, 5b, 5c. It extends to a position corresponding to a predetermined height of the stored product group, that is, a position corresponding to a substantially middle region of the product group.

  The internal blower fan F is disposed in the enlarged diameter portion 413 of the air supply duct 411. More specifically, the internal blower fan F is disposed in a manner that is horizontal in the vicinity of the gas supply port 414 in the enlarged diameter portion 413. Therefore, the internal blower fan F can blow air radially upward through the gas supply port 414. The internal blower fan F is driven as a blower source, whereby the air inside the product containers 5a, 5b, 5c can be circulated.

  Here, reference numeral 8 ′ in FIGS. 1 and 2 is a product carry-out shooter 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. As shown in FIG. 2, the plurality of hole portions 8 a formed in 8 ′ have an opening area that gradually increases from the back side toward the front side. More specifically, the plurality of holes 8a of the product carry-out shooter 8 'are formed in such a manner that the opening area gradually increases as the distance from the internal blower fan F increases.

  The heater H is disposed in the enlarged diameter portion 413, and more specifically, in the enlarged diameter portion 413 of the air supply pipe line 411 constituting the heat insulating container 41 corresponding to the commodity storage 5a, 5b, 5c. It is arranged on the upstream side of the inner blower fan F. The heater H is heated to generate ambient air by heating the surrounding air.

  The temperature adjusting device having the above configuration cools or heats the product W stored in the product storage 5a, 5b, 5c as follows. First, the case where the goods W accommodated in all the goods storage 5a, 5b, 5c are cooled is demonstrated. In this case, it is assumed that each heater H is not driven.

  In each refrigerant circulation channel of the cooling unit 20 constituting the temperature adjusting device, the cold heat from the low temperature part 11 of the Stirling refrigerator 10 is transferred to the evaporation heat exchanger 22 as follows, and the inside of each heat insulating container 41 is transferred. Cool the air. The refrigerant that has been cooled rapidly in the condensation heat exchanger 21 that is thermally connected to the low temperature portion 11 and has become a condensed liquid moves to the evaporation heat exchanger 22 through the liquid pipe 23 due to its gravity. In the evaporative heat exchanger 22, the refrigerant evaporates by the heat of the internal air of the heat insulating container 41 that accommodates the evaporative heat exchanger 22 and becomes vapor. That is, the heat inside the heat insulating container 41 is deprived of heat, thereby cooling the air inside the heat insulating container 41. By the way, the refrigerant evaporated into vapor in the evaporative heat exchanger 22 moves to the condensing heat exchanger 21 through the gas pipe 24, becomes a condensate again in the condensing heat exchanger 21, and repeats the above cycle. Become.

  In the heat radiating unit 30 of the cooling device, the high temperature exhaust heat from the high temperature part 12 of the Stirling refrigerator 10 is released to the outside of the vending machine as follows. The refrigerant that has received heat in the heat dissipation heat exchanger 31 that is thermally connected to the high temperature section 12 moves to the air heat exchanger 32 through the first transport line 33 and radiates heat in the air heat exchanger 32. That is, the air around the air heat exchanger 32 is heated. The heated air is discharged outside the vending machine by the outside fan 35. Therefore, the high temperature exhaust heat from the high temperature part 12 of the Stirling refrigerator 10 is released to the outside of the vending machine by the heat radiating unit 30. By the way, the refrigerant radiated by the air heat exchanger 32 moves to the radiant heat exchanger 31 through the second transport line 34 and receives the heat again by the radiant heat exchanger 31, whereby the above cycle is repeated.

  As described above, since the product containers 5a, 5b, 5c corresponding to the respective heat insulating containers 41 communicate with each other, the air in the product containers 5a, 5b, 5c is caused by the action of the internal fan F. It circulates inside the back duct 42, the heat insulation container 41, and the product storage 5a, 5b, 5c. More specifically, the air inside the product containers 5a, 5b, 5c enters the back duct 42 by the action of the internal fan F and reaches the inside of the heat insulating container 41 through the gas intake port 415. The refrigerant that has reached the inside of the heat insulating container 41 is cooled by the evaporative heat exchanger 22 while passing through the inside of the heat insulating container 41. The cooled air is blown through the gas supply port 414 along the direction of the arrow in FIG. 1 through the interior of the product storage 5a, 5b, 5c. That is, the cooled air passes through each hole 8a of the product carry-out shooter 8 ', and then blows in a mode that directly collides with the product group below the product group stored in the product storage rack 6. In other words, the internal blower fan F blows the cooled air in such a manner that it directly collides with the product W in the lower region among the products W stored in the product storage 5a, 5b, 5c. The air thus cooled is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the cooled air and the product W, and the product W Will be cooled.

  The air heated by the heat exchange with the product W again enters the rear duct 42 and reaches the heat insulating container 41 through the gas inlet 415. And it cools again by this heat insulation container 41, and repeats the circulation mentioned above.

  Thus, by circulating air between the heat insulating container 41 and the corresponding product storage 5a, 5b, 5c, the temperature of the air inside the product storage 5a, 5b, 5c is maintained at 0 ° C., for example. Accordingly, the product W can be set at a suitable sales temperature, for example, 5 ° C.

  Next, when heating the product W accommodated in the product storage 5c, for example, the temperature adjusting device heats the product W as follows.

  When the heater H is driven, the air heated by the heater H (warm heat) passes through the gas supply port 414 through the gas supply port 414 in the direction of the arrow in FIG. And blown. That is, the heated air passes through each hole 8a of the product carry-out shooter 8 ′, and then blows in such a manner that it directly collides with the product group below the product group stored in the product storage rack 6. In other words, the internal blower fan F blows the heated air in such a manner that it directly collides with a product in the lower region among the products W stored in the product storage 5c. The air thus heated is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the heated air and the product W, and the product W Will be heated.

  The air cooled by the heat exchange with the product W again enters the rear duct 42 and reaches the heat insulating container 41 through the gas inlet 415. Then, the heater H is heated again while passing through the air supply conduit 411, and the above-described circulation is repeated. Thus, by circulating the air heated by the heater H between the heat insulating container 41 and the corresponding product storage 5c, the temperature of the product W can be set to an appropriate sales temperature (for example, 55 ° C.).

  According to the temperature control apparatus as described above, the air blower fan F uses the air cooled by the cold generated by the Stirling refrigerator 10 or the air heated by the heater H as the commodity storage 5a. , 5b, 5c, so that the product W is blown in a mode that directly collides with the product in the lower region, so that the product W is cooled without incurring heat loss caused by colliding with the wall as in the conventional structure. Alternatively, heating can be performed, and the occurrence of temperature variations in the product W in the lower region can be suppressed. Therefore, not only the heat loss can be reduced, but the product W can be heated or the time required for the heating can be shortened, and the product W stored in the product storage 5a, 5b, 5c is in a desired temperature state. Can be adjusted. The reliability of the vending machine to be applied can be improved.

  In addition, since the plurality of holes 8a of the product carry-out shooter 8 'are formed in such a manner that the opening area gradually increases as they move away from the internal blower fan F, the air blown from the internal blower fan F is used. The product W can be reliably caused to collide with the uniform air volume, and thus the product W does not vary in temperature from the front side to the back side of the product storage 5a, 5b, 5c. As a result, not only can the time required for cooling or heating the product W be shortened, but also the generation of overcooled or overheated products can be suppressed and power consumption can be reduced. Energy saving can be achieved. Therefore, the goods W accommodated in the goods storage 5a, 5b, 5c can be satisfactorily adjusted to a desired temperature state.

  Furthermore, the heater H is disposed in the enlarged diameter portion 413 of the air supply pipe line 411. In other words, the heater H heats the air flowing through the air supply pipe line 411. There is no possibility of directly entering the heat insulating container 41 without performing heat exchange. Therefore, it is possible to prevent the pressure in the piping in the refrigerant circulation flow path from rapidly increasing.

<Embodiment 2>
FIG. 3 is a side cross-sectional view showing a configuration of a vending machine to which the temperature adjustment device in Embodiment 2 of the present invention is applied. In addition, the same code | symbol is attached to what has the same structure as the structure of the temperature control apparatus concerning the said Embodiment 1, and the same structure as the structure of the vending machine shown in FIG.9 and FIG.10. A description thereof will be omitted.

  In FIG. 3, the temperature adjusting device includes a Stirling refrigerator 10, a cooling unit 20, a heat radiating unit 30, a circulation unit 40, a heater H, and a louver R. The louver R is disposed in the vicinity of the gas supply port 414 inside the commodity storage 5a, 5b, 5c. The louver R makes the air volume distribution of the air (cooling air or heated air) blown by the internal blower fan F uniform from the front side to the back side of the commodity storage 5a, 5b, 5c.

  In such a temperature control device, the air in the product storage 5a, 5b, 5c circulates inside the back duct 42, the heat insulating container 41, and the product storage 5a, 5b, 5c by the action of the internal fan F. To do. More specifically, the air inside the product containers 5a, 5b, 5c enters the back duct 42 by the action of the internal fan F and reaches the inside of the heat insulating container 41 through the gas intake port 415. The refrigerant that has reached the inside of the heat insulating container 41 is cooled by the evaporative heat exchanger 22 while passing through the inside of the heat insulating container 41. The cooled air is blown through the gas supply port 414 along the direction of the arrow in FIG. 3 through the interior of the product storage 5a, 5b, 5c. That is, the cooled air is blown by the louver R in such a manner that the air volume distribution from the front side to the back side of the product storage 5a, 5b, 5c becomes uniform. As a result, after passing through each hole 8 a of the product carry-out shooter 8, the air is blown in such a manner that it directly collides with the product group below the product group stored in the product storage rack 6. The air thus cooled is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the cooled air and the product W, and the product W Will be cooled.

  The air heated by the heat exchange with the product W again enters the rear duct 42 and reaches the heat insulating container 41 through the gas inlet 415. And it cools again by this heat insulation container 41, and repeats the circulation mentioned above.

  Thus, by circulating air between the heat insulating container 41 and the corresponding product storage 5a, 5b, 5c, the temperature of the air inside the product storage 5a, 5b, 5c is maintained at 0 ° C., for example. Accordingly, the product W can be set at a suitable sales temperature, for example, 5 ° C.

  Next, when heating the product W accommodated in the product storage 5c, for example, the temperature adjusting device heats the product W as follows.

  When the heater H is driven, the air heated by the heater H (warm heat) passes through the gas supply port 414 through the gas supply port 414 in the direction of the arrow in FIG. And blown. That is, the heated air is blown by the louver R in such a manner that the air volume distribution from the front side to the back side of the product storage case 5c is uniform. As a result, after passing through each hole 8 a of the product carry-out shooter 8, the air is blown in such a manner that it directly collides with the product group below the product group stored in the product storage rack 6. The air thus heated is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the heated air and the product W, and the product W Will be heated.

  The air cooled by the heat exchange with the product W again enters the rear duct 42 and reaches the heat insulating container 41 through the gas inlet 415. Then, the heater H is heated again while passing through the air supply conduit 411, and the above-described circulation is repeated. Thus, by circulating the air heated by the heater H between the heat insulating container 41 and the corresponding product storage 5c, the temperature of the product W can be set to an appropriate sales temperature (for example, 55 ° C.).

  According to the temperature control apparatus according to the second embodiment of the present invention, the louver R distributes the air volume distribution of the air blown from the internal blower fan F from the front side to the back side of the commodity storage 5a, 5b, 5c. Since it can be made uniform, the air blown from the internal blower fan F can be made to collide with the product W with a uniform air volume, so that the product storages 5a, 5b, 5c can be rear sided from the front side. There is no temperature variation in the product W toward the side. As a result, not only can the time required for cooling or heating the product W be shortened, but also the generation of overcooled or overheated products can be suppressed and power consumption can be reduced. Energy saving can be achieved. Therefore, the goods W accommodated in the goods storage 5a, 5b, 5c can be satisfactorily adjusted to a desired temperature state.

<Embodiment 3>
FIG. 4 is a side cross-sectional view showing the configuration of a vending machine to which the temperature adjustment device according to Embodiment 3 of the present invention is applied. In addition, the thing which has the same structure as the structure of the temperature control apparatus concerning the said Embodiment 1 and Embodiment 2, and the thing which has the same structure as the structure of the vending machine shown in FIG. 9 and FIG. The same reference numerals are given and the description thereof is omitted.

  In FIG. 4, the temperature adjusting device includes a Stirling refrigerator 10, a cooling unit 20, a heat radiating unit 30, a circulation unit 50, and a heater H.

  The circulation unit 50 includes a heat insulating container 51, a back duct 42, and an internal fan F. The heat insulation container 51 is arrange | positioned in the aspect which contact | connects the bottom face of corresponding goods storage 5a, 5b, 5c. More specifically, a plurality of heat insulating containers 51 are provided, and are arranged in such a manner that each of them touches the bottom surface of the corresponding product storage 5a, 5b, 5c. And the heat insulation container 51 has the air supply line 511 and the intake line 512, and the air supply line 511 is connected in such a manner that the bottom surface of the corresponding product storage 5a, 5b, 5c and the heat insulating structure are held. The intake pipe 512 is connected to the rear duct 42 of the corresponding product storage 5a, 5b, 5c in such a manner as to maintain the heat insulation structure. The air supply duct 511 has a structure in which the downstream side has a larger diameter than the upstream side, and the downstream side enlarged diameter portion 513 has a boundary with the inside of the corresponding product storage 5a, 5b, 5c. Is provided with a gas inlet 514. In the intake pipe line 512, a gas intake port 515 is provided at the boundary with the rear duct 42. Accordingly, each heat insulating container 51 communicates with the corresponding product storage 5a, 5b, 5c through the gas supply port 514 and the gas intake port 515.

  The internal blower fan F is disposed in the enlarged diameter portion 513 of the air supply conduit 511. More specifically, the internal blower fan F has a storage direction formed by the lowest product among the products W stored in the product storage 5a, 5b, 5c in the enlarged diameter portion 513, that is, in FIG. Are arranged in a manner that is substantially parallel to a direction at an angle θ with respect to the horizontal direction.

  The heater H is disposed in the enlarged diameter portion 513, and more specifically, the accommodation direction formed by the lowest product among the products W stored in the product storage 5a, 5b, 5c, that is, In FIG. 4, it is arranged in an aspect that is substantially parallel to a direction that is at an angle θ with respect to the horizontal direction and that is disposed upstream of the internal blower fan F.

  In such a temperature control device, the air in the product storage 5a, 5b, 5c circulates inside the back duct 42, the heat insulating container 51, and the product storage 5a, 5b, 5c by the action of the internal fan F. To do. More specifically, the air inside the product containers 5a, 5b, 5c enters the back duct 42 by the action of the internal fan F and reaches the inside of the heat insulating container 51 through the gas inlet 515. The refrigerant that has reached the inside of the heat insulating container 51 is cooled by the evaporative heat exchanger 22 while passing through the inside of the heat insulating container 51. The cooled air is blown through the gas supply ports 514 along the direction of the arrow in FIG. 4 through the interiors of the product containers 5a, 5b, 5c. That is, the cooled air is blown in such a manner that the air volume distribution is substantially uniform from the front side to the back side of the commodity storage 5a, 5b, 5c. As a result, after passing through each hole 8 a of the product carry-out shooter 8, the air is blown in such a manner that it directly collides with the product group below the product group stored in the product storage rack 6. The air thus cooled is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the cooled air and the product W, and the product W Will be cooled.

  The air heated by the heat exchange with the product W again enters the rear duct 42 and reaches the heat insulating container 51 through the gas inlet 515. And it cools again by this heat insulation container 51, and repeats the circulation mentioned above.

  Thus, by circulating air between the heat insulating container 51 and the corresponding product storage 5a, 5b, 5c, the temperature of the air inside the product storage 5a, 5b, 5c is maintained at 0 ° C., for example. Accordingly, the product W can be set at a suitable sales temperature, for example, 5 ° C.

  Next, when heating the product W accommodated in the product storage 5c, for example, the temperature adjusting device heats the product W as follows.

  When the heater H is driven, the air heated by the heater H (heated heat) passes through the gas supply port 514 through the gas supply port 514 by the action of the internal blower fan F in the interior of the product storage 5a, 5b, 5c in FIG. Air is blown along the direction of the arrow. That is, the heated air is blown in such a manner that the air volume distribution is substantially uniform from the front side to the back side of the commodity storage 5c. As a result, after passing through each hole 8 a of the product carry-out shooter 8, the air is blown in such a manner that it directly collides with the product group below the product group stored in the product storage rack 6. The air thus heated is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the heated air and the product W, and the product W Will be heated.

  The air cooled by the heat exchange with the product W again enters the rear duct 42 and reaches the heat insulating container 51 through the gas inlet 515. Then, the heater H is heated again while passing through the air supply conduit 511, and the above-described circulation is repeated. Thus, by circulating the air heated by the heater H between the heat insulating container 51 and the corresponding product storage 5c, the temperature of the product W can be set to an appropriate sales temperature (for example, 55 ° C.).

  According to the temperature control apparatus according to the third embodiment of the present invention, the storage direction in which the internal blower fan F is formed by the lowest product among the products W stored in the product storage 5a, 5b, 5c. Since it is arranged in a mode substantially parallel to the direction (angle θ with respect to the horizontal direction in FIG. 4), the air volume distribution of the blown air is set to the front side of the commodity storage 5a, 5b, 5c. Since the air blown from the internal blower fan F can be made to collide with the product W with a uniform air volume, the front side is directed toward the back side. There is no temperature variation in the product W. As a result, not only can the time required for cooling or heating the product W be shortened, but also the generation of overcooled or overheated products can be suppressed and power consumption can be reduced. Energy saving can be achieved. Therefore, the goods W accommodated in the goods storage 5a, 5b, 5c can be satisfactorily adjusted to a desired temperature state.

<Embodiment 4>
FIG. 5 is a side cross-sectional view showing the configuration of a vending machine to which the temperature adjustment device in Embodiment 4 of the present invention is applied. In addition, the thing which has the same structure as the structure of the temperature control apparatus concerning the said Embodiment 1-3, and the thing which has the same structure as the structure of the vending machine shown in FIG.9 and FIG.10 are the same. Reference numerals are assigned and explanations thereof are omitted.

  In FIG. 5, the temperature adjusting device includes a Stirling refrigerator 10, a cooling unit 20, a heat radiating unit 30, a circulation unit 60, and a heater H.

  The circulation unit 60 includes a heat insulating container 61, a back duct 42, an internal fan F, and a wind direction plate 63. The heat insulation container 61 is arrange | positioned in the aspect which contact | connects the bottom face of corresponding goods storage 5a, 5b, 5c. More specifically, a plurality of the heat insulating containers 61 are provided, and are arranged in such a manner that each of the heat insulating containers 61 is in contact with the bottom surface of the corresponding product storage 5a, 5b, 5c. And the heat insulation container 61 has the air supply line 611 and the intake line 612, and the air supply line 611 is connected in the aspect which hold | maintains the heat insulation structure with the bottom face of corresponding goods storage 5a, 5b, 5c. The intake duct 612 is connected to the rear duct 42 of the corresponding product storage 5a, 5b, 5c so as to maintain the heat insulation structure. The air supply conduit 611 has a structure in which the downstream side has a larger diameter than the upstream side, and the downstream side enlarged diameter portion 613 has a boundary with the inside of the corresponding product storage 5a, 5b, 5c. A gas supply port 614 is provided. The gas supply port 614 has a storage direction formed by the lowest product among the products W stored in the product storage 5a, 5b, 5c, that is, a direction having an angle θ with respect to the horizontal direction in FIG. Are formed so as to be substantially parallel to each other. The intake pipe 612 is provided with a gas inlet 615 at the boundary with the rear duct 42. Accordingly, each heat insulating container 61 communicates with the corresponding product storage 5a, 5b, 5c through the gas supply port 614 and the gas intake port 615.

  The airflow direction plate 63 is a plate-like body in which a plurality of ventilation holes 63a are formed, and is arranged in a manner covering the gas supply port 614. More specifically, the wind direction plate 63 has an angle θ with respect to the storage direction formed by the lowest product among the products W stored in the product storage 5a, 5b, 5c, that is, the horizontal direction in FIG. It is arrange | positioned in the aspect which becomes substantially parallel to this direction. In the present embodiment, as shown in FIG. 6, the ventilation hole 63a of the airflow direction plate 63 has a small opening area of the ventilation hole 63a in the central region, and the opening area of the ventilation hole 63a gradually toward the outside. Is formed to be large. Thereby, the air volume of the air which passes the ventilation hole 63a of the wind direction board 63 can be equalized over the whole region.

  The temperature adjustment device in the present embodiment is different from the temperature adjustment device according to the third embodiment in the form of the gas supply port 614, and the wind direction plate 63 is disposed in the gas supply port 614. The only difference is that

  In such a temperature control device, the air in the product storage 5a, 5b, 5c circulates inside the back duct 42, the heat insulating container 61 and the product storage 5a, 5b, 5c by the action of the internal fan F. To do. More specifically, the air inside the product containers 5a, 5b, 5c enters the back duct 42 by the action of the internal fan F and reaches the inside of the heat insulating container 61 through the gas inlet 615. The refrigerant that has reached the inside of the heat insulating container 61 is cooled by the evaporative heat exchanger 22 while passing through the inside of the heat insulating container 61. The cooled air is blown through the gas supply ports 614 along the direction of the arrow in FIG. 5 through the interiors of the product containers 5a, 5b, 5c. That is, as a result of passing through each ventilation hole 63a of the wind direction plate 63, the cooled air is blown in such a manner that the air volume distribution is substantially uniform from the front side to the back side of the commodity storage 5a, 5b, 5c. As a result, after passing through each hole 8 a of the product carry-out shooter 8, the air is blown in such a manner that it directly collides with the product group below the product group stored in the product storage rack 6. The air thus cooled is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the cooled air and the product W, and the product W Will be cooled.

  The air heated and exchanged with the product W again enters the rear duct 42 and reaches the heat insulating container 61 through the gas inlet 615. And it cools again with this heat insulation container 61, and repeats the circulation mentioned above.

  Thus, by circulating air between the heat insulating container 61 and the corresponding product storage 5a, 5b, 5c, the temperature of the air inside the product storage 5a, 5b, 5c is maintained at 0 ° C., for example. Accordingly, the product W can be set at a suitable sales temperature, for example, 5 ° C.

  Next, when heating the product W accommodated in the product storage 5c, for example, the temperature adjusting device heats the product W as follows.

  By driving the heater H, the air (heated heat) heated by the heater H is moved along the direction of the arrow in FIG. And blown. That is, as a result of the heated air passing through each ventilation hole 63a of the airflow direction plate 63, the airflow is blown in such a manner that the air volume distribution is substantially uniform from the front side to the back side of the commodity storage 5c. As a result, after passing through each hole 8 a of the product carry-out shooter 8, the air is blown in such a manner that it directly collides with the product group below the product group stored in the product storage rack 6. The air thus heated is blown in such a manner as to directly collide with a group of products below the product storage rack 6, whereby heat exchange is performed between the heated air and the product W, and the product W Will be heated.

  The air cooled by the heat exchange with the product W enters the rear duct 42 again and reaches the heat insulating container 61 through the gas inlet 615. Then, the heater H is heated again while passing through the air supply conduit 611, and the above-described circulation is repeated. Thus, by circulating the air heated by the heater H between the heat insulating container 61 and the corresponding product storage 5c, the temperature of the product W can be set to an appropriate sales temperature (for example, 55 ° C.).

  According to the temperature control apparatus according to the fourth embodiment of the present invention, the airflow direction plate 63 allows the air blown by the action of the internal blower fan F to pass the air volume distribution of the air to the commodity storage 5a. , 5b, 5c can be made substantially uniform from the front side to the back side, so that the air blown from the internal blower fan F can be reliably collided by the product W with an equal air volume, and thereby the front side There is no temperature variation in the product W from the side toward the back side. As a result, not only can the time required for cooling or heating the product W be shortened, but also the generation of overcooled or overheated products can be suppressed and power consumption can be reduced. Energy saving can be achieved. Therefore, the goods W accommodated in the goods storage 5a, 5b, 5c can be satisfactorily adjusted to a desired temperature state.

<Embodiment 5>
FIG. 7 is a side cross-sectional view showing a configuration of a vending machine to which the temperature adjustment device in Embodiment 5 of the present invention is applied. In addition, the thing which has the same structure as the structure of the temperature control apparatus concerning the said Embodiment 1-4, and the thing which has the same structure as the structure of the vending machine shown in FIG.9 and FIG.10 are the same. Reference numerals are assigned and explanations thereof are omitted.

  In FIG. 7, the temperature adjusting device includes a Stirling refrigerator 10, a cooling unit 20, a heat radiating unit 30, a circulation unit 60 ′, a heater H, and a control device 70.

  The circulation unit 60 ′ includes a heat insulating container 61, a rear duct 42, an internal fan F, and a wind direction plate 64. The airflow direction plate 64 is a plate-like body in which a plurality of ventilation holes 64 a are formed, and is arranged in a manner to cover the gas supply port 614. More specifically, the wind direction plate 64 has an angle θ with respect to the storage direction formed by the lowest product among the products W stored in the product storage 5a, 5b, 5c, that is, the horizontal direction in FIG. It is arrange | positioned in the aspect which becomes substantially parallel to this direction. In the present embodiment, as shown in FIG. 8, the ventilation holes 64 a of the wind direction plate 64 have an opening area that is uniformly formed and is configured to be opened and closed by the control device 70.

  The control device 70 controls the opening and closing of the ventilation holes 64 a of the wind direction plate 64. More specifically, the control device 70 determines the wind direction based on the detected temperatures of the temperature sensors 71, 72, 73 arranged in a plurality (three in the present embodiment) in each of the commodity storages 5a, 5b, 5c. The opening and closing of the ventilation hole 64a of the plate 64 is controlled. The temperature sensors 71, 72, 73 are below the product W accommodated in the lowermost stage and in the region above the product carry-out shooter 8, the front side, the center side, and the back side of the product storage case 5 a, 5 b, 5 c. It is arranged on the side.

  And when the control apparatus 70 cools the goods W accommodated in goods storage 5a, 5b, 5c, the threshold value by which the detected temperature detected by the temperature sensor 71 arrange | positioned by the front side was preset, for example When the height is higher, only the vent hole 64a that allows the cooled air to pass toward the front side of the commodity storage 5a, 5b, 5c is opened. On the other hand, in the case where the product W stored in the product storage 5a, 5b, 5c is heated, for example, when the detected temperature detected by the temperature sensor 72 disposed on the center side is lower than a preset threshold value, Only the ventilation holes 64a that allow the heated air to pass toward the center of the product storage boxes 5a, 5b, 5c are opened.

  According to the temperature adjusting device according to the fifth embodiment of the present invention, the control device 70 is based on the detected temperatures of the temperature sensors 71, 72, 73 disposed in the respective product containers 5a, 5b, 5c. Since the opening and closing of the 64 ventilation holes 64a is controlled, for example, when a product is replenished, it is possible to blow air in a mode in which only the replenished product W is cooled or directly collided with heated air, Only the replenished product W can be cooled or heated. As a result, not only can the time required for cooling or heating the product W be shortened, but also the generation of overcooled or overheated products can be suppressed and power consumption can be reduced. Energy saving can be achieved. Therefore, the goods W accommodated in the goods storage 5a, 5b, 5c can be satisfactorily adjusted to a desired temperature state.

  As described above, the temperature adjustment device according to the present invention is useful for adjusting the product W accommodated in the product storage in a vending machine or the like to a desired temperature state, for example.

It is side surface sectional drawing which showed the structure of the vending machine to which the temperature control apparatus in Embodiment 1 of this invention was applied. It is front sectional drawing which showed the structure of the vending machine to which the temperature control apparatus in Embodiment 1 of this invention was applied. It is side surface sectional drawing which showed the structure of the vending machine to which the temperature control apparatus in Embodiment 2 of this invention was applied. It is side surface sectional drawing which showed the structure of the vending machine to which the temperature control apparatus in Embodiment 3 of this invention was applied. It is side surface sectional drawing which showed the structure of the vending machine to which the temperature control apparatus in Embodiment 4 of this invention was applied. It is explanatory drawing which showed the structure of the wind direction board in FIG. It is side surface sectional drawing which showed the structure of the vending machine to which the temperature control apparatus in Embodiment 5 of this invention was applied. It is explanatory drawing which showed the structure of the wind direction board in FIG. It is front sectional drawing which showed the general vending machine. FIG. 10 is a side sectional view of the vending machine shown in FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Stirling refrigerator 11 Low temperature part 12 High temperature part 20 Cooling unit 21 Condensing heat exchanger 22 Evaporation heat exchanger 23 Liquid piping 24 Gas piping 30 Heat radiation unit 31 Radiation heat exchanger 32 Air heat exchanger 33 1st transport line 34 2nd Transport line 35 Outside fan 40, 50, 60, 60 ′ Circulation unit 41, 51, 61 Heat insulation container 42 Rear duct 63, 64 Airflow direction plate 63a, 64a Ventilation hole 70 Controller 71, 72, 73 Temperature sensor F Inside the chamber Blower H Heater R Louver W Product

Claims (4)

A fan disposed in the air supply conduit is driven between the product storage accommodating the product and a heat insulating container communicating with the interior of the product storage through an air supply conduit and an intake conduit having a heat insulating structure. An internal atmosphere circulation means for circulating the internal atmosphere of the commodity storage through the intake pipe, the heat insulating container, and the air supply pipe in this order ;
An internal atmosphere cooling means for cooling the internal atmosphere circulated by the internal atmosphere circulation means using the cold generated by a Stirling refrigerator disposed outside the product storage,
In the temperature adjustment device adapted to adjust the product stored in the product storage to a desired temperature state,
The fan is disposed in a manner that is horizontal to a diameter-enlarged portion that is formed in a manner that the diameter is enlarged at a portion facing the gas air supply port that is a boundary with the inside of the commodity storage in the air supply conduit. And the internal atmosphere cooled by the internal atmosphere cooling means through the gas supply port so as to directly collide with the goods in the lower region among the goods stored in the goods storage by being driven by itself. A temperature control device characterized in that the air is blown radially . The fan blows the internal atmosphere in a mode of passing a plurality of holes formed in a carry-out shooter for carrying out the commodity,
The temperature adjusting device according to claim 1, wherein the plurality of holes are formed in a mode in which an opening area gradually increases as the distance from the fan increases . The temperature control device according to claim 1 , further comprising a louver for making the air volume distribution of the internal atmosphere blown by the fan uniform . Driven when cooling by the internal atmosphere cooling means is stopped, and comprises a heater for heating the internal atmosphere circulated by the internal atmosphere circulation means,
The temperature adjusting device according to any one of claims 1 to 3, wherein the heater is disposed in the enlarged diameter portion .

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