JP2008226154A - Automatic vending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost automatic vending machine which can efficiently heat articles even when outside temperature is low, for example, in winter. <P>SOLUTION: The automatic vending machine includes a cold air suction duct which supplies air from a right box 4c to a cold air heat exchanger 96, a cold air discharge duct which supplies air from a left box 4a to a gas cooler 84, and a hot air delivery duct which supplies air heated by the gas cooler 84 to the left box 4a. The automatic vending machine is equipped with a heater 87 which is disposed in a heating room 81 and heats the air in the heating room 81, the heater 87 operating when the temperature outside the automatic vending machine drops below predetermined temperature. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention cools the air circulating through the interior of the product storage that stores the product by absorbing heat in the cooling heat exchanger, while warming the air circulating through the interior of the product storage by dissipating heat in the heating heat exchanger. It relates to vending machines.

  There is known a vending machine in which an interior is defined as a product storage room and a machine room, and the product storage room is further defined in three product storages. This vending machine has a use-side heat exchanger in each product storage, while a compressor and a heat source-side heat exchanger that together with the use-side heat exchanger form a refrigeration cycle are housed in a machine room. is doing. And let one goods storage be a cooling box (specific storage), and let the other two goods storage be a cooling and heating combined use box (cooling and heating storage). Thus, according to the vending machine in which one product storage is a cooling cabinet (specific storage) and the other two product storages are cooling and heating storages (cooling and heating storage), all the product storages Can be used as a cooler, or one product storage (specific store) can be used as a cooler and the other two product stores (cooling and heating storage) can be used as a warmer. Further, the second product storage (a specific storage and one cooling / heating storage) can be a cooling storage, and the other product storage (cooling / heating storage) can be a heating storage.

  And when all the goods storage is made into a refrigerator, the utilization side heat exchanger arrange | positioned in all the goods storage functions as an evaporator. In addition, when one product storage (specific storage) is used as a cooling cabinet and the other two product storages (cooling and heating storage) are used as heating storage, the use of one product storage (specific storage) is used. The side heat exchanger functions as an evaporator, and the use side heat exchanger of the other two commodity storages (cooling and heating combined storage) functions as a condenser. Furthermore, if the second product storage (specific storage and one cooling and heating combined storage) is a cooling store and the other one product storage is a heating storage, the second product storage (specific storage and The use side heat exchanger of one cooling and heating storage) functions as an evaporator, and the use side heat exchanger of the other one product storage (cooling and heating storage) functions as a condenser.

  By the way, when the outside air temperature is low as in winter, even if one or two product storages are used as heating chambers, the heating capacity of the use side heat exchanger is insufficient, and the products stored in the product storages are warmed up. It will take time. Therefore, in the product storage, which serves as a cooling and heating storage, an auxiliary heater is provided in addition to the use side heat exchanger, and when the heating capacity is insufficient, the auxiliary heater is energized to supply the product. Temperature can be quickly performed (for example, refer to Patent Document 1).

JP 2001-109944 A

  However, since the vending machine described above is provided with a use-side heat exchanger for each product storage and an auxiliary heater is provided in the product storage used also as a heating storage, It was difficult to reduce costs.

  In view of the above circumstances, an object of the present invention is to provide a low-cost vending machine capable of efficiently warming a product even when the outside air temperature is low as in winter.

  In order to achieve the above object, a vending machine according to claim 1 of the present invention is such that one opens to one product storage for storing products and the other opens to a cooling chamber containing a cooling heat exchanger. And a cool air suction duct for supplying air from one product storage to the cooling heat exchanger, and one of the openings opened in the cooling chamber and the other opened in the one product storage and cooled in the cooling heat exchanger A cold air discharge duct that supplies the product to one product storage, and one that opens to the other product storage that stores the product and the other that opens to the heating chamber that stores the heating heat exchanger. A warm-air suction duct that supplies air to the heating heat exchanger and one that opens to the heating chamber and the other opens to the other product storage, supplying air warmed in the heating heat exchanger to the other product storage With warm air discharge duct In the vending machine, the heater that is disposed inside the heating chamber and that heats the air inside the heating chamber, and controls the operation of the heater when the outside air temperature of the vending machine falls below a predetermined temperature. And low temperature control means.

  The vending machine according to claim 2 of the present invention is the vending machine according to claim 1, wherein the supply of air warmed to another product storage is stopped while the supply of air cooled to one product storage is stopped. When the operation is continued, a heating time control means for controlling the operation of the heater is provided.

  The vending machine according to the present invention is disposed inside the heating chamber, and operates the heater when the outside air temperature of the vending machine falls below a predetermined temperature, and a heater that heats the air inside the heating chamber. Since the low temperature control means for controlling is provided, it is possible to realize a vending machine capable of quickly warming a product even at a low temperature as in winter, at a low cost.

  Exemplary embodiments of a vending machine according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a front view showing a state in which an outer door and an inner door of a vending machine as an embodiment of the vending machine according to the present invention are opened, and FIG. 2 is a view of the vending machine II-II shown in FIG. FIG. 3 is a sectional view of the vending machine shown in FIG.

  The vending machine according to the embodiment of the present invention is a vending machine that sells products such as canned beverages, beverages in plastic bottles, or bottled beverages in a cooled state or in a warmed state. Is preferred.

  As shown in FIGS. 1 to 3, the vending machine according to the present embodiment includes a main body cabinet 1. The main body cabinet 1 is configured by appropriately combining a plurality of steel materials, and has a box shape with an open front surface.

  An inner door (not shown) and an outer door 2 are supported on the left edge of the main body cabinet 1. On the front surface of the outer door 2, a product display room (not shown) for displaying samples of products such as canned beverages and beverages in plastic bottles, a selection button (not shown) for selecting products, and money are displayed. Configurations necessary for the sale of merchandise such as a money slot (not shown) for throwing in and a merchandise outlet (not shown) for taking out the dispensed merchandise are arranged. The inner door is made of a heat insulating material, and is disposed between the outer door 2 and the main body cabinet 1 so as to open and close the front opening of the main body cabinet 1.

  The inside of the main body cabinet 1 is defined by a partition plate 3 (floor plate) into a product storage chamber 4 and a machine chamber 5. The product storage chamber 4 is defined in the upper part of the main body cabinet 1, and the machine room 5 is defined in the lower part of the main body cabinet 1.

  As shown in FIG. 1, the product storage chamber 4 is further divided into three product storages 4 a, 4 b, 4 c by two heat insulating partition plates 40. These three commodity storages 4 a, 4 b, 4 c are arranged side by side in the width direction of the main body cabinet 1. In the following description, the left-hand side product storage 4a is referred to as “left storage 4a”, the central product storage 4b as “center storage 4b”, and the right-hand product storage 4c as “right storage 4c”. Called.

  The left warehouse 4a and the middle warehouse 4b of the vending machine according to the present embodiment are cooling / heating storages that can both cool the product and warm the product, and the right store 4c only cools the product. It cannot be used for cooling.

  Further, in the vending machine according to the present embodiment, as shown in FIG. 1, the width (volume) of the right warehouse 4c is the largest, the width (volume) of the left warehouse 4a follows the right warehouse 4c, and the middle warehouse 4b. The width (volume) is defined to be the smallest. For this reason, two rows of product storage racks 6 are accommodated in the left cabinet 4a and right warehouse 4c in the width direction of the main body cabinet 1, and one row of product storage racks in the width direction of the main cabinet 1 are stored in the middle cabinet 4b. 6 is stored. The product storage rack 6 housed in the right box 4c and the product storage rack 6 housed in the left box 4a have different widths of the product storage rack 6, but this is usually different from the product storage rack 6 housed in the right box 4c. This is because it is possible to store a product such as a beverage in a plastic bottle having a capacity larger than the capacity of the bottle.

  As shown in FIGS. 2 and 3, the left storage 4a, the middle storage 4b, and the right storage 4c store product storage racks 6 so as to define five rows of product storage passages in the depth direction. . Therefore, 10 types of products can be stored in each of the left store 4a and the right store 4c, and five types of products can be stored in the middle store 4b. That is, the vending machine according to the present embodiment can store 25 types of products, and can sell them on demand.

  The product storage rack 6 is a so-called serpentine rack in which meandering product storage passages are defined. The product storage rack 6 carries out products one by one from the product storage rack 6 to the lower part of the product storage rack 6. A product unloading device (not shown) called a bendmec is provided.

  As shown in FIGS. 2 and 3, back ducts 41 are respectively attached to the interiors of the respective product storage boxes 4 a, 4 b, 4 c and at the depths of the product storage racks. The rear duct 41 is for sucking and circulating the air that has passed between the products stored in the product storage rack 6, and has a suction port (not shown) at a position in the middle of the product storage 4 a, 4 b, 4 c. And a discharge port (not shown) is formed at a position below the commodity storages 4a, 4b, 4c.

  Moreover, as shown in FIG.4 and FIG.5, the interior wind tunnel 42a, 42b, 42c is attached to the lower back part of each goods storage 4a, 4b, 4c. The internal wind tunnels 42a, 42b, and 42c have a box shape in which the back surface and the bottom surface are opened, and the deep surfaces of the internal wind tunnels 42a, 42b, and 42c are connected to the discharge port of the back duct 41, The bottom surfaces of the internal wind tunnels 42a, 42b, and 42c are connected to the partition plate 3 (floor plate). Therefore, the air sucked from the suction port (not shown) of the rear duct 41 is guided to the internal wind tunnels 42a, 42b, 42c via the discharge port (not shown) of the rear duct 41. Yes.

  As shown in FIGS. 4 and 5, among the product storage boxes 4 a, 4 b, 4 c, the partition plate 3 (floor board) of the left box 4 a and the middle box 4 b has a cold air inlet 43 a in order from the back to the front. 43b, warm air suction ports 44a and 44b, warm air discharge ports 45a and 45b, and cold air discharge ports 46a and 46b. The cold air inlets 43a and 43b and the warm air inlets 44a and 44b are opened at the bottom portions of the internal wind tunnels 42a and 42b, and the air sucked from the inlet (not shown) of the rear duct 41 is The air is sucked from the cool air suction ports 43a and 43b or the warm air suction ports 44a and 44b via the discharge port (not shown) of the rear duct 41 and the internal wind tunnels 42a and 42b. On the other hand, the warm air discharge ports 45a and 45b and the cold air discharge ports 46a and 46b are opened in front of the portion that becomes the bottom surface of the internal wind tunnels 42a and 42b, and the warm air discharge ports 45a and 45b or the cold air discharge ports. The air discharged from the outlets 46a and 46b is supplied directly into the left warehouse 4a or the middle warehouse 4b without directly flowing into the inner wind tunnels 42a and 42b.

  Cold air suction ports 43a, 43b, warm air suction ports 44a, 44b, warm air discharge ports 45a, 45b, cold air suction shutters 43a1, 43b1, hot air suction shutters 44a1, 44b1, warm air discharge shutters 45a1, 45b1 and cool air discharge shutters 46a1 and 46b1 are provided in the left cabinet 4a and the middle cabinet 4b. These shutters are made of a heat insulating material, and are made of a plate-like body having an area sufficient to close the opening.

  The cool air suction shutters 43a1 and 43b1, the warm air suction shutters 44a1 and 44b1, the warm air discharge shutters 45a1 and 45b1, and the cool air discharge shutters 46a1 and 46b1 are linked to open and close. That is, when the cool air suction shutters 43a1 and 43b1 and the cool air discharge shutters 46a1 and 46b1 are linked and the cool air suction shutters 43a1 and 43b1 close the cool air suction ports 43a and 43b, the cool air discharge shutters 46a1 and 46b1 are cooled. 46b, the warm air suction shutters 44a1 and 44b1 are linked to the warm air discharge shutters 45a1 and 45b1, and the warm air suction shutters 44a1 and 44b1 close the warm air suction ports 44a and 44b. Closes the warm air discharge ports 45a and 45b.

  Further, the cool air suction shutters 43a1 and 43b1 and the cool air discharge shutters 46a1 and 46b1 and the warm air suction shutters 44a1 and 44b1 and the warm air discharge shutters 45a1 and 45b1 are also linked to open and close. That is, when the cool air suction shutters 43a1 and 43b1 close the cool air suction ports 43a and 43b and the cool air discharge shutters 46a1 and 46b1 close the cool air discharge ports 46a and 46b, the warm air suction shutters 44a1 and 44b1 are warm air suction ports 44a and 44b. And the warm air discharge shutters 45a1 and 45b1 open the warm air discharge ports 45a and 45b, while the warm air suction shutters 44a1 and 44b1 close the warm air suction ports 44a and 44b and the warm air discharge shutters 45a1 and 45b1 are the warm air discharge ports 45a. , 45b, the cool air suction shutters 43a1, 43b1 open the cool air suction ports 43a, 43b, and the cool air discharge shutters 46a1, 46b1 open the cool air discharge ports 46a, 46b.

  Therefore, when the left warehouse 4a is used as a refrigerator, the warm air suction port 44a is closed and the warm air discharge port 45a is closed, while the cold air suction port 43a is opened and the cold air discharge port 46a is opened. Further, when the left chamber 4a is a heating chamber, the cold air suction port 43a is closed and the cold air discharge port 46a is closed, while the warm air suction port 44a is opened and the warm air discharge port 45a is opened. .

  Similarly, when the intermediate store 4b is a cooling store, the warm air suction port 44b is closed and the warm air discharge port 45b is closed, while the cold air suction port 43b is opened and the cold air discharge port 46b is opened. . Further, in the case where the intermediate store 4b is a heating store, the cool air suction port 43b is closed and the cool air discharge port 46b is closed, while the warm air suction port 44b is opened and the warm air discharge port 45b is opened. .

  Among the product storages 4a, 4b, and 4c, the partition plate 3 (floor plate) of the right store 4c has a cool air suction port 43c opened in the back and a cool air discharge port 46c opened in the front. The cold air inlet 43c is open to a portion that becomes the bottom surface of the internal wind tunnel 42c, like the left warehouse 4a and the middle warehouse 4b, and the air sucked from the inlet (not shown) of the rear duct 41 is The rear duct 41 is sucked from the cold air inlet 43c via the discharge port (not shown) and the internal wind tunnel 42c. On the other hand, the cold air discharge port 46c is opened at a position ahead of the portion that is the bottom surface of the internal wind tunnel 42c, and the air discharged from the cold air discharge port 46c does not directly flow into the internal wind tunnel 42c. It is supplied into the right warehouse 4c.

  Since the right warehouse 4c is a dedicated cooling warehouse, it is not necessary to close the cold air inlet 43c and the cold air outlet 46c, and the cold air inlet 43c and the cold air outlet 46c are always open, so the cold air inlet 43c. It is not necessary to provide the cool air suction shutter for closing the cool air and the cool air discharge shutter for closing the cold air discharge port 46c in the right box 4c.

  A product carry-out shooter 47 is attached to a part inside each product storage 4a, 4b, 4c and below the product storage rack 6. The product carry-out shooter 47 is for carrying the product carried out from the product storage rack 6 forward from the back of the product storage 4a, 4b, 4c, and is inclined so as to gradually become lower from the back toward the front. It is attached with.

  An internal fan 48 is attached to the lower surface of the product carry-out shooter 47. The internal fan 48 discharges air from the cold air discharge ports 46a, 46b, 46c or the warm air discharge ports 45a, 45b, and supplies air (cold air or warm air) to the products stored in the product storage rack 6. . The internal fan 48 attached to each product storage 4a, 4b, 4c is on / off controlled based on a temperature sensor (not shown) disposed in the product storage 4a, 4b, 4c. Thus, the temperature control of the product storages 4a, 4b, 4c is performed.

  As shown in FIGS. 4 and 5, four communication passages 5a, 5b, 5c, and 5d (ducts) are defined in the upper portion of the machine room 5, that is, the lower surface of the partition plate 3 by a heat insulating material. The communication passage (duct) extends in the direction in which the product storages 4a, 4b, and 4c are arranged side by side, and in order from the back of the machine room 5 to the front, the cool air suction duct 5a, the warm air suction duct 5b, the warm air discharge duct 5c A cold air discharge duct 5d is formed.

  One of the cold air suction ducts 5a opens to the product storages 4a, 4b, and 4c, and the other opens to a cooling chamber 91 that houses a cooling heat exchanger 96 described later. Specifically, one side (suction side) of the cold air suction duct 5a opens to the cold air suction ports 43a, 43b, 43c of the respective product storage boxes (left warehouse 4a, middle warehouse 4b, right warehouse 4c), while the cold air suction duct The other (discharge side) of 5a is opened to the cooling chamber 91 in which the cooling heat exchanger 96 is accommodated.

  One of the warm-air suction ducts 5b opens into the product storage 4a, 4b, and the other opens into a heating chamber 81 containing a heating heat exchanger (gas cooler 84) described later. Specifically, one of the warm air suction ducts 5b (suction side) opens to the warm air suction ports 44a and 44b of each product storage (left warehouse 4a, middle warehouse 4b), while the other warm air suction duct 5b (discharge side). ) Is opened to the heating chamber 81 in which the heating heat exchanger (gas cooler 84) is accommodated.

  One of the warm air discharge ducts 5c opens into the heating chamber 81 and the other opens into the commodity storages 4a and 4b. Specifically, one side (suction side) of the warm air discharge duct 5c opens into the heating chamber 81, while the other side (discharge side) of the warm air discharge duct 5c is warm air of each product storage (left box 4a, middle box 4b). It opens to the discharge ports 45a and 45b.

  One of the cold air discharge ducts 5d opens into the cooling chamber 91, and the other opens into the product storage boxes 4a, 4b, 4c. Specifically, one side (suction side) of the cool air discharge duct 5d opens into the cooling chamber 91, while the other side (discharge side) of the cool air discharge duct 5d is each product storage (left store 4a, middle store 4b, right store). 4c) is opened to the cold air discharge ports 46a, 46b, 46c.

  A heat exchange unit 7 is detachably attached to the machine room 5. As shown in FIG. 6, the heat exchange unit 7 includes a heating unit 8 and a cooling unit 9. The heating unit 8 has a box-shaped heating chamber 81 that is located on the left side of the front surface of the heat exchange unit 7 and is defined by a heat insulating material.

  As shown in FIG. 7, the upper surface of the heating chamber 81 is open, and the discharge side of the warm air suction duct 5b and the suction side of the warm air discharge duct 5c are open. Accordingly, air is supplied to the heating chamber 81 from the product storage with the warm air inlets 44a and 44b open, and then air is supplied from the heating chamber 81 to the product storage with the warm air discharge ports 45a and 45b open. Will be.

  An air suction port 81a1 is formed in the front wall 81a constituting the heating chamber 81, and an air discharge port 81b1 is formed in the rear wall 81b constituting the heating chamber 81. The air suction port 81a1 is for sucking air into the heating chamber from the outside of the vending machine, and the sucked air is discharged from the air discharge port 81b1 to the outside of the vending machine. The air suction port 81a1 can be opened and closed by an air suction shutter 81a2, and the air discharge port 81b1 can be opened and closed by an air discharge shutter 81b2.

  As shown in FIG. 9, the heating chamber 81 accommodates a compressor 82, an intermediate heat exchanger 83, a gas cooler 84, and an internal heat exchanger 85. The compressor 82 compresses the refrigerant to a high temperature and high pressure state. For example, a two-stage compressor that performs a compression action in two steps is employed. The two-stage compressor includes a first compressor 82a and a second compressor 82b, and an intermediate heat exchanger 83 (first condenser) is provided between the first compressor 82a and the second compressor 82b. Intervene.

  The intermediate heat exchanger 83 constitutes a heating heat exchanger together with the gas cooler 84. By condensing the refrigerant, the intermediate heat exchanger 83 dissipates heat of condensation from the periphery of the intermediate heat exchanger 83, and the periphery of the intermediate heat exchanger 83. It is configured to heat the air. The intermediate heat exchanger 83 is constituted by, for example, a so-called fin-and-tube type condenser in which a copper tube passes through an aluminum fin that is an aluminum plate-like body.

A gas cooler 84 (second condenser) is connected to the compressor 82 (second compressor 82b). The gas cooler 84 constitutes a heating heat exchanger together with the intermediate heat exchanger 83. By condensing the refrigerant, the gas cooler 84 dissipates the heat of condensation around the gas cooler 84 and heats the air around the gas cooler 84. It is configured. Note that when carbon dioxide (CO ₂ refrigerant) is used as a refrigerant as in the present embodiment, a supercritical state may occur without being liquefied. The gas cooler 84 is constituted by, for example, a so-called fin and tube type condenser in which a copper tube passes through an aluminum fin that is an aluminum plate-like body.

  The internal heat exchanger 85 performs heat exchange between a high-pressure refrigerant that flows from the gas cooler 84 to an electronic expansion valve 94 described later and a low-pressure refrigerant that flows from a cooling heat exchanger 96 described later to the compressor 82. Therefore, in the internal heat exchanger 85, the refrigerant pipe 85a in which the refrigerant flows from the gas cooler 84 to the electronic expansion valve 94 and the refrigerant pipe 85b in which the refrigerant flows from the cooling heat exchanger 96 to the compressor 82 exchange heat with each other. It is arranged in a non-contact countercurrent manner at a possible distance.

  In addition to the heating heat exchanger constituted by the gas cooler 84 and the intermediate heat exchanger 83, the compressor 82 and the internal heat exchanger 85 are accommodated in the heating chamber 81 in the gas cooler 84 and the intermediate heat exchanger 83. This is for recovering heat generated in the compressor 82 and the internal heat exchanger 85 in addition to the heat dissipated.

  The heating chamber 81 further accommodates a heating fan 86 and a heater 87.

  The heating fan 86 is disposed between the compressor 82 and the gas cooler 84. The heating fan 86 is normally rotated in the normal state to allow air to flow from the compressor 82 toward the gas cooler 84, while when the heat is exhausted from the heating chamber 81, the heating fan 86 is reversed to be directed toward the compressor 82. Air.

  The heater 87 is disposed at a position in front of the gas cooler 84. The heater 87 is further downstream of the gas cooler 84 when the heating fan 86 is rotated forward so that air flows from the compressor 82 toward the gas cooler 84, and the warm air discharge ports 45 a and 45 b are opened from the heating chamber 81. The air warmed by the heater 87 is supplied to the existing product storage.

  A reflective member (not shown) is attached to the front wall 81 a of the heating chamber 81 facing the heater 87. The reflecting member prevents the heating chamber 81 from being damaged by the air heated by the heater 87.

  The cooling unit 9 includes a box-shaped cooling chamber 91 that is located on the right side of the front surface of the heat exchange unit 7 and has an open upper surface, and an evaporating dish 92 disposed below the cooling chamber 91.

  As shown in FIG. 8, the cooling chamber 91 is defined by a heat insulating material, and the discharge side of the cold air suction duct 5a and the suction side of the cold air discharge duct 5d are open. Therefore, air is supplied to the cooling chamber 91 from the product storage with the cold air inlets 43a, 43b, 43c open, and then the product storage with the cold air discharge ports 46a, 46b, 46c open from the cooling chamber 91. Air will be supplied to.

  In addition, an air suction port 91a is formed in a portion that is in front of the bottom wall constituting the lower surface of the cooling chamber 91, and an air discharge port 91b is formed in a portion that is behind the bottom wall. The air suction port 91a is for sucking air into the cooling chamber 91 from the outside of the vending machine, and the sucked air is discharged from the air discharge port 91b to the outside of the vending machine. The air suction port 91a can be opened and closed by an air suction shutter 91a1, and the air discharge port 91b can be opened and closed by an air discharge shutter 91b1.

  Furthermore, the water tray 93 is formed in the center part of the bottom wall in the aspect which becomes low gradually toward the center from the front and back. A drain 93a is provided at the lowest portion of the water receiving tray 93, and the drain water accumulated in the water receiving tray 93 is dropped onto the evaporating tray 92 through the drain 93a.

As shown in FIG. 9, the cooling chamber 91 accommodates an electronic expansion valve 94, an electromagnetic valve 95, and a cooling heat exchanger 96. The electronic expansion valve 94, the electromagnetic valve 95, and the cooling heat exchanger 96 constitute a refrigeration cycle together with the compressor 82, the intermediate heat exchanger 83, the gas cooler 84, and the internal heat exchanger 85 accommodated in the heating chamber 81. In the present embodiment, carbon dioxide (CO ₂ refrigerant) having nonflammability, safety, and corrosion resistance and having little influence on the ozone layer is used as the refrigerant circulating in the refrigeration cycle configured as described above. ing.

  The electronic expansion valve 94 is connected to an internal heat exchanger 85 accommodated in the heating chamber 81 via a refrigerant pipe, and adiabatically expands the refrigerant condensed in the gas cooler 84. And low temperature and low pressure.

  The electromagnetic valve 95 is connected to the electronic expansion valve 94 via a refrigerant pipe, and discharges the refrigerant to the cooling heat exchanger 96 in the open state, while blocking the refrigerant in the closed state.

  The cooling heat exchanger 96 is connected to the electromagnetic valve 95 via the refrigerant pipe, and absorbs the heat of evaporation from the periphery of the cooling heat exchanger 96 by evaporating the refrigerant adiabatically expanded to a low temperature and low pressure state. The air around the cooling heat exchanger 96 is cooled. The cooling heat exchanger 96 is, for example, a so-called fin-and-tube type evaporator in which a copper tube passes through an aluminum fin that is an aluminum plate-like body.

  The evaporating dish 92 is for accumulating dripped drain water and promoting the evaporation of the drain water. The evaporating dish 92 is provided with an evaporating sheet 97 in which a nonwoven fabric is folded. In addition, a cold heat exhaust fan 98 is provided at a position behind the evaporating dish 92. The cool heat exhaust fan 98 promotes the evaporation of the drain water sucked up by the evaporation sheet 97 by capillary action, and operates with the air suction port 91a and the air discharge port 91b being opened, thereby cooling the heat exchanger. The air cooled around 96 can be discharged to the outside.

  According to the heat exchange unit described above, the refrigerant is compressed in the compressor 82 and the intermediate heat exchanger 83 to be in a high temperature and high pressure state. Specifically, the refrigerant compressed by the first (first) compression action in the first compressor 82a is cooled in the intermediate heat exchanger 83 and then supplied to the second compressor 82b. Therefore, since the refrigerant is cooled between the first compressor 82a and the second compressor 82b, that is, in the intermediate heat exchanger 83, the refrigerant is compressed to a desired high temperature and high pressure state with low power consumption.

  The refrigerant that has been compressed in the compressor 82 and the intermediate heat exchanger 83 and is in a high-temperature and high-pressure state is discharged to the gas cooler 84 and condensed and liquefied in the gas cooler 84. At this time, the heat of condensation is dissipated around the gas cooler 84, and the air around the gas cooler 84 is heated.

  The refrigerant liquefied by the gas cooler 84 is discharged to the electronic expansion valve 94 via the internal heat exchanger 85. In the internal heat exchanger 85, heat exchange is performed between the high-pressure refrigerant discharged from the gas cooler 84 to the electronic expansion valve 94 and the low-pressure refrigerant discharged from the cooling heat exchanger 96 to the compressor 82.

  The refrigerant discharged to the electronic expansion valve 94 is decompressed and adiabatically expands to a low temperature and low pressure state. The low-temperature and low-pressure state refrigerant is discharged to the cooling heat exchanger 96 via the open electromagnetic valve 95.

  The refrigerant that has reached a low temperature and low pressure state in the electronic expansion valve 94 is evaporated and vaporized in the cooling heat exchanger 96. At this time, heat is absorbed from the periphery of the cooling heat exchanger 96, and the air around the cooling heat exchanger 96 is cooled.

  In this state, when the air suction shutter 81a2 and the air discharge shutter 81b2 of the heating chamber 81 are closed and the heating fan 86 is operated (forward rotation), the air suction port 81a1 and the air discharge port 81b1 are closed, and the air in the heating chamber 81 is closed. Will be heated. On the other hand, when the air suction shutter 81a2 and the air discharge shutter 81b2 of the heating chamber 81 are opened and the heating fan 86 is operated (reversely rotated), the air suction port 81a1 and the air discharge port 81b1 are opened, and from outside the vending machine. Air is sucked into the heating chamber 81 through the air suction port 81a1, and then air is discharged from the air discharge port 81b1 to the outside of the vending machine. That is, the heated air is discharged outside the vending machine.

  In this state, when the air suction shutter 91a1 and the air discharge shutter 91b1 of the cooling chamber 91 are closed and the cold heat exhaust heat fan 98 is operated, the air suction port 91a and the air discharge port 91b are closed, and the air in the cooling chamber 91 is closed. The drain water accumulated in the evaporating dish 92 is discharged outside the vending machine. On the other hand, when the air suction shutter 91a1 and the air discharge shutter 91b1 of the cooling chamber 91 are opened and the cold heat exhaust heat fan 98 is operated, the air suction port 91a and the air discharge port 91b are opened, and air is sucked from the outside of the vending machine. Air is sucked into the periphery of the cooling heat exchanger 96 via the opening, and then air is discharged from the air discharge port 91b to the outside of the vending machine. That is, the cooled air is discharged outside the vending machine.

  As shown in FIG. 6, the heat exchanging unit 7 configured as described above is provided with a pair of left and right pop-up handles 71. The pop-up handle 71 is for popping up (raising) the heat exchange unit 7 housed in the machine room 5. The pop-up handle 71 is moved in the opposite direction (the left pop-up handle is counterclockwise and the right pop-up handle is clockwise). ), The heat exchange unit 7 pops up (rises).

  After the heat exchange unit 7 configured as described above is accommodated in the machine room 5, the pop-up handles 71 are in opposite directions (the left-side pop-up handle 71 is counterclockwise and the right-side pop-up handle 71 is clockwise). When the heat exchange unit 7 is popped up (raised) by rotating in this manner, the other of the warm air suction duct 5b (discharge side) and one of the warm air discharge duct 5c (suction side) open to the heating chamber 81, The other side (discharge side) of the cold air suction duct 5a and one side (suction side) of the cold air discharge duct 5d open into the cooling chamber 91. The warm air suction duct 5b and the warm air discharge duct 5c and the opening of the upper surface of the heating chamber 81 are in close contact with the cold air suction duct 5a and the cool air discharge duct 5d and the opening of the cooling chamber 91, and the heat exchange unit 7 and the cold air suction duct. Air does not leak between 5a, the warm air suction duct 5b, the warm air discharge duct 5c, and the cold air discharge duct 5d.

  As shown in FIG. 10, in the above-described vending machine according to the embodiment of the present invention, when the products are cooled in all the product storage boxes 4a, 4b, 4c, that is, the left box 4a, the middle box 4b, the right box. When the product is cooled in 4c (the state in which the vending machine is set in this way is referred to as “CCC mode”), the warm air suction ports 44a and 44b and the warm air discharge ports 45a and 45b of the left warehouse 4a and the middle warehouse 4b are closed. At the same time, the cold air suction ports 43a and 43b and the cold air discharge ports 46a and 46b of the left and right warehouses 4a and 4b are opened.

  At this time, since the condensation heat is radiated excessively in the heating chamber 81, the air suction port 81a1 and the air discharge port 81b1 of the heating chamber 81 are opened in order to discharge the condensation heat to the outside of the vending machine. The heating fan 86 is reversed so that air flows from the air suction port 81a1 to the air discharge port 81b1.

  And the internal fan 48 until the temperature sensor (not shown) arrange | positioned in each store | warehouse | chamber (left store 4a, middle store 4b, right store 4c) of goods storage becomes a set temperature (for example, 5 degrees C). Turn on. Then, the air cooled in the cooling chamber 91 circulates in the product storage where the internal fan 48 is turned on, and the product is cooled in all of the left store 4a, the middle store 4b, and the right store 4c. Become. Then, the internal temperature decreases with the passage of time, and when the internal fan 48 is turned off, the internal temperature increases with the passage of time. By repeating this, the internal temperature is kept at the set temperature. First, the internal temperature of the intermediate store 4b reaches the set temperature, and then the internal temperatures of the left store 4a and the right store 4c reach the set temperature. For this reason, after the internal fan 48 of the central warehouse 4b is turned off, the internal fan 48 of the left warehouse 4a and the internal fan 48 of the right warehouse 4c are turned off.

  On the other hand, when warming the product in the left store 4a and cooling the product in the middle store 4b and the right store 4c (the state in which the vending machine is set in this way is referred to as “HCC mode”), the cold air inlet of the left store 4a 43a and the cold air discharge port 46a are closed, while the warm air suction port 44a and the warm air discharge port 45b of the left chamber 4a are opened, while the warm air suction port 44b and the warm air discharge port 45b of the middle chamber 4b are closed. The cold air inlet 43b and the cold air outlet 46b of the warehouse 4b are opened.

  And the temperature sensor (not shown) arrange | positioned in each store | warehouse | chamber (left store 4a, middle store 4b, right store 4c) of goods storage is set temperature (for example, left store is 55 degrees C, middle store, and right store) Until the temperature reaches 5 ° C.). Then, the air warmed in the heating chamber 81 circulates in the left warehouse 4a in which the internal fan 48 is turned on, and the product is warmed in the left warehouse 4a. On the other hand, the air cooled in the cooling chamber 91 circulates in the middle warehouse 4b and the right warehouse 4c in which the internal fan 48 is turned on, and the product is cooled in the middle warehouse 4b and the right warehouse 4c. And as time passes, the internal temperature of the left warehouse 4a increases, and the internal temperature of the intermediate warehouse 4b and the right warehouse 4c decreases. When the internal fan 48 is turned off, the internal temperature of the left storage 4a decreases, and the internal temperatures of the central storage 4b and the right storage 4c increase. By repeating this, the internal temperature is kept at the set temperature. First, the internal temperature of the right compartment 4c reaches the set temperature, and the internal temperature reaches the set temperature in the order of the left compartment 4a and the middle compartment 4b. For this reason, after the internal fan 48 of the right warehouse 4c and the internal fan 48 of the left warehouse 4a are turned off in this order, the internal fan 48 of the middle warehouse 4b is turned off.

  When the vending machine is operated in the HCC mode, heating in the heating chamber 81 and cooling in the cooling chamber 91 are started at the same time, and thereafter, heating in the heating chamber 81 is interrupted while cooling in the cooling chamber 91 is performed. Control to continue. At this time, since the condensation heat is radiated excessively in the heating chamber 81, the air suction port 81a1 and the air discharge port 81b1 of the heating chamber 81 are opened in order to discharge the condensation heat to the outside of the vending machine. The heating fan 86 is reversed so that air flows from the air suction port 81a1 to the air discharge port 81b1.

  On the other hand, when the product is warmed in the left store 4a and the center store 4b and the product is cooled in the right store 4c (the state in which the vending machine is set in this way is referred to as “HHC mode”), the left store 4a and the center store 4b. The cold air inlets 43a and 43b and the cold air outlets 46a and 46b are closed, while the warm air inlets 44a and 44b and the warm air outlets 45a and 45b of the left and right compartments 4a and 4b are opened.

  And the temperature sensor (not shown) arrange | positioned in merchandise storage (left warehouse 4a, middle warehouse 4b, right warehouse 4c) is set temperature (For example, left warehouse and inner warehouse are 55 degreeC, right warehouse is 5 degrees. The internal fan 48 is turned on until C). Then, the air warmed in the heating chamber 81 circulates in the left warehouse 4a and the middle warehouse 4b in which the internal fan 48 is turned on, and the product is warmed in the left warehouse 4a and the middle warehouse 4b. On the other hand, the air cooled in the cooling chamber 91 circulates in the right store 4c where the internal fan 48 is turned on, and the product is cooled in the right store 4c. As the time passes, the internal temperature of the left warehouse 4a and the middle warehouse 4b increases, and the internal temperature of the right warehouse 4c decreases. When the internal fan 48 is turned off, the internal temperature of the left storage 4a and the central storage 4b decreases, and the internal temperature of the right storage 4c increases. By repeating this, the internal temperature is kept at the set temperature. First, the internal temperature of the middle warehouse 4b and the right warehouse 4c reaches the set temperature, and then the internal temperature of the left warehouse 4a reaches the set temperature. For this reason, after the internal fan 48 of the central warehouse 4b and the internal fan 48 of the right warehouse 4c are turned off, the internal fan 48 of the intermediate warehouse 4b is turned off.

  When operating the vending machine in the HHC mode, the heating in the heating chamber 81 and the cooling in the cooling chamber 91 are started simultaneously, and then the cooling in the cooling chamber 91 is interrupted while the heating in the heating chamber 81 is continued. To control (only heating operation). At this time, while the compressor 82 is stopped, the heater 87 is operated. Therefore, excessive heat of evaporation is not absorbed in the cooling chamber 91, and it is not necessary to discharge the cooled air to the outside of the vending machine.

  When warming the product in the central store 4b and cooling the product in the left store 4a and the right store 4c (the state in which the vending machine is set in this way is referred to as “CHC mode”), the warm air inlet of the left store 4a 44a and the warm air outlet 45a are closed, while the cold air inlet 43a and the cold air outlet 46a of the left chamber 4a are opened, while the cold air inlet 43b and the cold air outlet 46b of the inner chamber 4b are closed, The warm air suction port 44b and the warm air discharge port 45b of the warehouse 4b are opened.

  And the temperature sensor (not shown) arrange | positioned in goods storage (left warehouse 4a, middle warehouse 4b, right warehouse 4c) is set temperature (for example, 55 degreeC in the middle warehouse, 5 degrees in the left warehouse and the right warehouse). The internal fan 48 is turned on until C). Then, the air warmed in the heating chamber 81 circulates in the middle store 4b where the internal fan 48 is turned on, and the product is warmed in the middle store 4b. On the other hand, the air cooled in the cooling chamber 91 circulates in the left warehouse 4a and the right warehouse 4c where the internal fan 48 is turned on, and the product is cooled in the left warehouse 4a and the right warehouse 4c. Then, with the passage of time, the internal temperature of the middle warehouse 4b increases, and the internal temperature of the left warehouse 4a and the right warehouse 4c decreases. When the internal fan 48 is turned off, the internal temperature of the intermediate storage 4b decreases, and the internal temperatures of the left storage 4a and the right storage 4c increase. By repeating this, the internal temperature is kept at the set temperature. In addition, the internal temperature of the left store | warehouse | chamber 4a and the right store | warehouse | chamber 4c reaches | attains preset temperature first, and the internal chamber temperature of the central store | warehouse | chamber 4b reaches | attains preset temperature first. For this reason, after the internal fan 48 of the left warehouse 4a and the internal fan 48 of the right warehouse 4c are turned off, the internal fan 48 of the intermediate warehouse 4b is turned off.

  When operating the vending machine in the CHC mode, the heating in the heating chamber 81 and the cooling in the cooling chamber 91 are started simultaneously, and then the cooling in the cooling chamber 91 is interrupted while the heating in the heating chamber 81 is continued. To control (only heating operation). At this time, while the compressor 82 is stopped, the heater 87 is operated. Therefore, excessive heat of evaporation is not absorbed in the cooling chamber 91, and it is not necessary to discharge the cooled air to the outside of the vending machine.

  The vending machine according to the present embodiment described above includes a heater 87 that is disposed inside the heating chamber 81 and warms the air inside the heating chamber 81, and the outside air temperature of the vending machine is higher than a predetermined temperature. Since the heater 87 is operated when the temperature falls, the product can be quickly warmed even when the outside air temperature is low as in winter.

  In addition, when the supply of air cooled to one product storage is stopped while the supply of air warmed to another product storage is continued (when heating is performed alone), the heater 87 is controlled to operate. As a result, the product can be efficiently warmed.

It is a front view of the vending machine which is embodiment of this invention, Comprising: The state which removed the outer door and the inner door is shown. It is a vertical side view which shows the vending machine longitudinally cut in the II-II line in FIG. It is a vertical side view which shows the vending machine longitudinally cut in the III-III line in FIG. It is a perspective view for demonstrating circulation of cold air. It is a perspective view for demonstrating circulation of warm air. It is a perspective view which shows the heat exchange unit attached to the vending machine shown in FIG. 1 so that attachment or detachment is possible. It is a conceptual diagram which shows the heating part shown in FIG. It is a conceptual diagram which shows the cooling part shown in FIG. It is a circuit diagram which shows the refrigerant circuit of the heat exchange unit shown in FIG. It is a figure explaining the operating state of the vending machine which is embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body cabinet 2 Outer door 3 Partition plate 4 Goods storage room 4a Left warehouse (goods storage)
4b Nakago (product storage)
4c Right warehouse (product storage)
40 Heat insulation partition plate 41 Rear duct 42a, 42b, 42c Internal wind tunnel 43a, 43b, 43c Cold air inlet 43a1, 43b1 Cold air inlet shutter 44a, 44b Warm air inlet 44a1, 44b1 Warm air inlet shutter 45a, 45b Warm air outlet 45a1, 45b1 Warm air discharge shutter 46a, 46b, 46c Cold air discharge port 46a1, 46b1 Cold air discharge shutter 47 Product carry-out shooter 48 Internal fan 5 Machine room 5a Cold air suction duct 5b Warm air suction duct 5c Warm air discharge duct 5d Cold air discharge duct 6 Product storage rack 7 Heat exchange unit 71 Pop-up handle 8 Heating unit 81 Heating chamber 81a Front wall 81a1 Air inlet 81a2 Air inlet shutter 81b Rear wall 81b1 Air outlet 81b2 Air outlet shutter 82 Compressor 82a First compression Machine 82b second compressor 83 intermediate heat exchanger 84 gas cooler 85 internal heat exchanger 85a refrigerant pipe 85b refrigerant pipe 86 heating fan 87 heater 9 cooling section 91 cooling chamber 91a air inlet 91a1 air inlet shutter 91b air outlet 91b1 Air discharge shutter 92 Evaporating tray 93 Water receiving tray 93a Drain 94 Electronic expansion valve 95 Solenoid valve 96 Cooling heat exchanger 97 Evaporating sheet 98 Cooling heat exhaust fan

Claims (2)

A cold air suction duct that opens to one product storage for storing products and the other opens to a cooling chamber containing a cooling heat exchanger, and supplies air from the one product storage to the cooling heat exchanger; One opening to the cooling chamber and the other opening to the one product storage, the cool air discharge duct for supplying the air cooled in the cooling heat exchanger to the one product storage, and the other to store the product While opening to the product storage and the other opening to the heating chamber containing the heat exchanger, the warm air suction duct for supplying air from the other product storage to the heating heat exchanger, and one opening to the heating chamber In a vending machine provided with a warm air discharge duct that opens to the other product storage and supplies the air heated in the heating heat exchanger to the other product storage,
A heater that is disposed inside the heating chamber and that heats the air inside the heating chamber;
A vending machine comprising low temperature control means for controlling operation of the heater when the outside air temperature of the vending machine falls below a predetermined temperature.   When the supply of air cooled to one product storage is stopped while the supply of air warmed to another product storage is continued, a control unit for heating is provided to control the operation of the heater. The vending machine according to claim 1.

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