JP2009122818A - Vending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vending machine with small power consumption by suppressing increase in cost and occurrence of heat loss in a heat pump-type automatic vending machine which uses a cold air duct and warm air duct. <P>SOLUTION: The vending machine includes: a plurality of article storage rooms which stores articles; a cooling chamber having a cooling heat exchanger which cools an article storage room; a heating chamber having a heating heat exchanger which heats the article storage room; a cooling passage which connects the article storage room and the cooling chamber; a heating passage which connects the article storage room and a heat chamber; and a passage switching means to switch between cooling passages 67 and 68 connected with the article storage room and heating passages 65 and 66. The vending machine further includes: a duct section 60 which forms the cooling passage and the heating passage by a first frame 61 which forms a duct in a groove shape with a heat insulator and a top plate laid in a top surface of the first frame. The duct section has a second frame 63 which surrounds an outer surface of the first frame with low water absorption and small thickness. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vending machine that cools and heats a product stored in a product storage.

Reducing carbon dioxide emissions has become an issue with recent global warming, and energy-saving vending machines have been developed as vending machines. As one of the methods, a heat pump type vending machine that uses the heat of the condenser, which has been exhausted in the past, to heat the inside of the cabinet has attracted attention (for example, see Patent Document 1).
However, this vending machine uses the heat exchanger inside the warehouse as an evaporator when cooling, and as a condenser when warming, so the way of flowing the refrigerant is changed depending on the cooling heating operation mode of the vending machine. As a result, there is a problem that the piping of the refrigeration circuit becomes complicated and causes high costs.
In contrast, the inventors have been developing a system in which cold air and warm air flowing through the interior are switched by a duct instead of changing the way of flowing the refrigerant. This type of vending machine is not a heat pump operation, but there is also a method in which a cooling chamber with an evaporator is provided below the product storage and air is blown and circulated inside the storage using a duct that connects pipes. (For example, see Patent Documents 2 and 3).
JP 2002-298210 A JP-A-3-286291 JP-A-3-286292

However, applying this type of vending machine to cold air ducts and heat pump vending machines that use warm air ducts has problems such as increased costs, generation of heat loss, and insufficient heating capacity. Has the following problems.
(1) Since the assembly cost increases when a plurality of ducts are piped together, it is conceivable that the cool air duct and the warm air duct are arranged in the same frame, which increases the heat loss due to the temperature difference.
(2) In a warehouse, when a beverage flows into a duct due to a broken bottle of a product container or the like, the heat insulating material in the duct absorbs moisture and the heat insulating performance deteriorates with time.
(3) If the switching mechanism between the cold air duct and the warm air duct path is complicated, the manufacturing cost and the assembling cost are increased.
(4) When the discharge port and the suction port of the cool air duct and the warm air duct are switched at the same time, if the cooled or heated air flows out from the gap of the engaging portion of the switching mechanism, it mixes with the air in the store and heat Loss occurs.
(5) Compared with a conventional method of installing a heating source in a warehouse, a heat loss due to heat transport occurs when the heating source is installed outside the warehouse, so that the heating capacity needs to be increased accordingly.

  In view of the above circumstances, an object of the present invention is to solve the problems (1) to (5), efficiently perform a heat pump operation, and provide a vending machine with low power consumption.

In order to achieve the above object, a vending machine according to a first aspect of the present invention includes a plurality of product storage rooms storing products, a cooling chamber having a cooling heat exchanger for cooling the product storage chamber, and product storage. A heating chamber having a heating heat exchanger for heating the chamber, a cooling passage connecting the product storage chamber and the cooling chamber, a heating passage connecting the product storage chamber and the heating chamber, a cooling passage and a heating passage connecting to the product storage chamber In the vending machine having a passage switching means for switching the cooling passage, the cooling passage is formed by a first frame body that forms a duct in a groove shape with a heat insulating material, and a top plate placed on the upper surface of the first frame body. A duct portion that forms the heating passage, and a second frame body that has a low water absorption and is formed in a thin shape in such a manner that the duct portion surrounds the outer surface of the first frame body; It is characterized by.
A vending machine according to a second aspect of the present invention is the vending machine according to the first aspect, wherein the duct portion has a packing inserted between the top plate and the second frame, A plurality of fastening means are arranged on the periphery, and the top plate, the first frame body, the second frame body and the packing are fastened together by the fastening means.
The vending machine according to a third aspect of the present invention is the vending machine according to the first aspect, wherein the passage switching means includes a discharge port and a suction port of the cooling passage, and a discharge port and a suction port of the heating passage. Are selectively switched in conjunction with an opening / closing mechanism, and the opening / closing mechanism includes a pinion and a rack that slides in opposite directions.

The vending machine according to a fourth aspect of the present invention is the vending machine according to the third aspect, wherein a partition wall that isolates the discharge port and the suction port is provided in the product storage chamber, and the discharge port is provided in the partition wall. And an engagement hole that engages with an engagement piece that simultaneously drives the lid that opens and closes the suction port, and a shielding plate that shields the engagement hole in conjunction with the movement of the engagement piece is provided. It is characterized by.
A vending machine according to a fifth aspect of the present invention is the vending machine according to the first aspect, wherein a part of the compressor is inserted into the heating chamber, and a fin is provided on the outer peripheral portion of the inserted compressor. It is characterized by that.
A vending machine according to a sixth aspect of the present invention is the vending machine according to the first aspect, further comprising a heat transfer means for thermally connecting the inside of the heating chamber and the outer surface of the compressor. To do.

According to the vending machine according to the first aspect of the present invention, a plurality of product storage rooms storing products, a cooling chamber having a cooling heat exchanger for cooling the product storage chambers, and heating heat for heating the product storage chambers A heating chamber having an exchanger, a cooling passage connecting the product storage chamber and the cooling chamber, a heating passage connecting the product storage chamber and the heating chamber, a passage switching means for switching between the cooling passage and the heating passage connected to the product storage chamber; The cooling passage and the heating passage are formed by a first frame body that forms a duct in a groove shape with a heat insulating material and a top plate that is placed on the upper surface of the first frame body A second frame body that is formed in a thin shape with low water absorption in a manner that the duct section surrounds the outer surface of the first frame body. 4 ducts are housed in the same frame, resulting in fewer parts Cost is reduced. In addition, the second frame body that has a low water absorption and is molded in a thin shape does not directly penetrate into the heat insulating material even if the stored beverage spills in a broken bottle or the like. There is no decrease and heat insulation performance can be secured stably over a long period of time.
According to the vending machine according to claim 2 of the present invention, in the vending machine according to claim 1, the duct portion has a packing inserted between the top plate and the second frame. In addition, a plurality of fastening means are arranged on the outer peripheral edge, and the top plate, the first frame body, the second frame body, and the packing are integrally fastened by the fastening means. Since assembly is possible outside the assembly line, the assembly cost is reduced.

According to the vending machine according to claim 3 of the present invention, in the vending machine according to claim 1, the passage switching means includes a discharge port and a suction port of the cooling passage, and a discharge port of the heating passage. The suction port is selectively switched in conjunction with the opening / closing mechanism, and the opening / closing mechanism includes a pinion and a rack that slides in opposite directions, so that a simple mechanism can reliably pass the passage in the cabinet. Can be shielded and the cost is reduced.
According to the vending machine according to claim 4 of the present invention, in the vending machine according to claim 3, the product storage chamber is provided with a partition wall separating the discharge port and the suction port, and the partition wall is provided with the partition wall. A shielding plate that forms an engagement hole that engages with an engagement piece that simultaneously drives a lid that opens and closes the discharge port and the suction port, and shields the engagement hole in conjunction with the movement of the engagement piece. By providing, it is possible to prevent air that has cooled or heated inside the warehouse from flowing into the inside of the warehouse without returning to the suction port, so that the cooling or heating performance is maintained with high efficiency.
According to the vending machine according to claim 5 of the present invention, in the vending machine according to claim 1, a part of the compressor is inserted into the heating chamber, and the outer periphery of the compressor is inserted. By providing the fins, the exhaust heat from the compressor can be used effectively for heating the in-compartment product, so that the heating performance is improved.

  According to the vending machine according to claim 6 of the present invention, in the vending machine according to claim 1, in the vending machine according to claim 1, the inside of the heating chamber and the outer surface of the compressor are provided. By providing the heat transfer means for thermal connection, the exhaust heat from the compressor can be effectively used for heating the goods in the warehouse, so that the heating performance is improved.

Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The present invention is not limited to the first embodiment.
FIGS. 1-14 is the figure explaining Embodiment 1 which concerns on this invention. FIG. 1 is a perspective view of an overall view of a vending machine showing Embodiment 1 according to the present invention, and FIG. 2 is a product rack in which an outer door and an inner door of the vending machine shown in FIG. 1 are opened. It is a front view which shows the state which removed. In addition, the product carry-out chute is also removed from the left product room in FIG. 3 is a cross-sectional view taken along the line II-II of the vending machine shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line III-III of the vending machine shown in FIG. 5 is a perspective view of the duct portion shown in FIG. 1, FIG. 6 is an exploded view of the duct portion shown in FIG. 1, and FIG. 7 is a perspective view of the second frame body of the duct portion as viewed from below. FIG. FIG. 8 is a perspective view of the lower part of the IV-IV section of the vending machine shown in FIG. 9 is a perspective view of the passage switching means shown in FIG. 8, FIG. 10 is a side view of the passage switching means, and FIG. 11 is a cross-sectional view of the passage switching means. FIG. 12 is a perspective view showing an operation diagram of the passage switching means, where (a) is during the cooling operation, (b) is during the opening / closing operation, and (c) is during the heating operation. 13 is a perspective view of the cooling / heating unit shown in FIG. 2, and FIG. 14 is a refrigerant circuit diagram of the vending machine shown in FIG. FIG. 15 is a schematic diagram of a compressor.

In these drawings, as shown in FIGS. 1 and 2, the vending machine includes a main body cabinet 10 formed as a rectangular heat insulator having an open front surface, an outer door 20 and an inner door 30 provided on the front surface, The interior of the main body cabinet 10 is divided into two upper and lower stages by the bottom plate 11, and the upper part is partitioned by, for example, two heat insulating partition plates 40w, and three independent product storages 40a, 40b, 40c, and the lower part is a product storage. 40a, 40b, 40c and the machine room 50 that houses the cooling / heating unit 90 that cools or heats via the duct part 60, and the temperature inside the product storages 40a, 40b, 40c are arranged inside the outer door 20 And a control means 200 that controls cooling, heating operation, and the like of the vending machine by a sensor.
More specifically, the outer door 20 is used to open and close the front opening of the main body cabinet 10 and is not shown in the figure. Product display room, selection button for selecting the product to be sold, money slot for inserting money, product outlet 21 for taking out the paid-out product, etc. Is arranged.
The inner door 30 opens and closes the front surfaces of the product storage units 40a, 40b, and 40c to keep the products in the interior warm. The inner door 30 is a box-shaped structure that is divided into upper and lower stages and has a heat insulator inside. The upper inner door 30a is pivoted at one end to the outer door 20, and the other end is engaged with the outer door 20, and the upper inner door 30a is opened at the same time as the outer door 20 is opened to facilitate replenishment of goods. It is to make. The lower inner door 30b is in a closed state when one end pivots on the main body cabinet 10 and the other end is hooked on the main body cabinet 10 with a latch (not shown) and the outer door 20 is opened. It is possible to prevent the cool air or warm air in the storage cases 40a, 40b, and 40c from flowing out, and to open as necessary during maintenance.

The product storage units 40a, 40b, 40c are for storing products such as canned beverages and beverages containing plastic bottles while maintaining the desired temperature, and the capacity of the storage units is the product storage units 40c, 40a. , 40b in a large manner. The product storage racks 40a, 40b, and 40c each store products in a manner arranged in the vertical direction, and product storage racks R having a product carry-out mechanism for discharging the products one by one in response to a sales signal, A product carry-out chute 42 for carrying the discharged product to the sales port 21 of the outer door is provided. Further, as shown in FIGS. 3 and 4, the product storage boxes 40 a, 40 b, and 40 c are provided with a rear duct 44 and a ventilation duct 45 on the back side, and communicated from the ventilation duct 45 at the lower part of the storage box to the blower chamber 70. The duct part 60 is installed.
The product storages 40 a and 40 b are used for both cooling and heating, and a passage switching means 80 for switching between cooling and heating passages is provided inside the air blowing chamber 70. On the other hand, the commodity storage 40c is dedicated to cooling, and the ventilation chamber 70 is provided, but the passage switching means 80 is not provided.
The merchandise carry-out chute 42 is for guiding the merchandise carried out from the merchandise carry-out mechanism to the merchandise take-out port 21 and is gradually inclined downward from the back of the merchandise storage boxes 40a, 40b, 40c toward the front side. It is a flat member fixed to the commodity storage 40a, 40b, 40c. In addition, a large number of holes are formed in the surface so that the cooled or heated air blown out from the blower chamber 70 is allowed to pass therethrough.

The rear duct 44 is a ventilation channel for returning the air that has cooled or heated the products in the product storage units 40a, 40b, and 40c from the inside to the cooling / heating unit 90, and the rear ducts 44 of the product storage units 40a, 40b, and 40c. These are plate-shaped members having a U-shaped cross-section that are respectively installed on the back surface. The rear duct 44 has a suction opening whose upper portion opens toward the front surface, and a lower portion communicates with the ventilation duct 45.
The ventilation duct 45 is for passing air from the back duct 44 to the blower chamber 70, and is a plate-like member having a rectangular cross section.
The machine room 50 is located below the product storages 40a, 40b, and 40c as shown in FIG. 2, and houses a cooling / heating unit 90 having a heating chamber 91 and a cooling chamber 92, a power supply unit 110 (not shown), and the like. It is a space for.
The duct portion 60 is attached to the bottom plate 11, and is formed of a top plate 61, a first frame body 62 formed of a heat insulating member, and a waterproof member having a small thickness, as shown in FIGS. A cooling passage configured to circulate cooled or heated air between the product storages 40a, 40b, 40c and the cooling / heating unit 90, and a second frame 63 and a packing member 64; A heating passage is provided.

The top plate 61 is a plate-like member and is formed with a cold air inlet 61a and a cold air outlet 61b corresponding to the cooling-only product storage 40c, and corresponds to the cooling and heating product storages 40b and 40c. Then, a cold air inlet 61d, a cold air outlet 61e, a warm air inlet 61c, a warm air outlet 61f, a cold air inlet 61g, a cold air outlet 61j, a warm air inlet 61h, and a warm air outlet 61i are formed. Yes. A plurality of mounting screw portions 69a are formed on the peripheral edge of the top plate 61 so as to avoid the duct air passage.
The first frame 62 is a member integrally formed of cyclopentane or hard urethane, has an upper surface opened, extends in the juxtaposition direction of the product storage units 40a, 40b, and 40c, and has a heating passage on the outside. The warm air suction duct 65 and the warm air discharge duct 66 are formed, and the cool air suction duct 67 and the cool air discharge duct 68 which are cooling passages are formed inside. Moreover, it has the attachment hole 69b in the position corresponding to the above-mentioned attachment screw part 69a.
As shown in FIG. 4, the warm air suction duct 65 is located on the innermost side of the duct portion 60, one of which communicates with the product storage 40 a, 40 b and the other that accommodates a heating heat exchanger 96 described later. It communicates with the chamber 91. Specifically, one side (suction side) of the warm air suction duct 65 opens to the warm air suction ports 61h and 61c of the top plate 61 corresponding to the respective product storages 40a and 40b, while the other side (discharge side) of the warm air suction duct 65. ) Has a discharge opening 62c that opens into the heating chamber 91 in which the heating heat exchanger 96 is accommodated.

The warm air discharge duct 66 is located on the foremost side of the duct portion 60, and one communicates with the heating chamber 91 and the other communicates with the product storage units 40a and 40b. Specifically, one side (suction side) of the warm air discharge duct 66 is opened with the suction opening 62d in the heating chamber 91, while the other side (discharge side) of the warm air discharge duct 66 is the respective product storage boxes 40a, 40b. Are opened to the warm air discharge ports 61i and 61f of the top plate 61 corresponding to the above.
One of the cold air suction ducts 67 communicates with the product storage boxes 40 a, 40 b, 40 c and the other communicates with the cooling chamber 92. Specifically, as shown in FIGS. 3 and 6, one side (suction side) of the cold air suction duct 67 opens to the cold air suction ports 61g, 61d, 61a of the top plate 61 corresponding to the product storages 40a, 40b, 40c. On the other hand, the other side (discharge side) of the cold air suction duct 67 has a cold air suction port 62 a that opens into the cooling chamber 92. The cold air suction duct 67 is formed in such a manner that the cross-sectional area increases from the middle of the cross-sectional shape toward the product storage 40a.
As with the cold air suction duct 67, one of the cold air discharge ducts 68 communicates with the cooling chamber 92 and the other communicates with the product storages 40a, 40b, 40c, and the cross-sectional shape is also on the way to the product storage 40a. From this, the cross-sectional area is increased.
The bottom plate 11 has openings corresponding to the cool air suction port 62a, the cool air discharge port 62b, the warm air suction port 62c, and the warm air discharge port 62d of the frame body 62, respectively.

The second frame 63 is a member formed by hot-pressing a single waterproof sheet-like member, and includes a cold air suction duct 67, a warm air suction duct 65, a warm air discharge duct 66 of the first frame 63, It is formed so as to cover the surface of the cold air discharge duct 68. Further, as shown in FIG. 7, the second frame 63 is formed so as to cover the wall surfaces of the cold air inlet 62a, the cold air outlet 62b, the warm air inlet 62c, and the warm air outlet 62d of the first frame 62. Yes. Since the duct surface of the first frame body 62 is covered with the second frame body 63 in this way, even if moisture flows into the duct portion 60 due to a broken bottle or the like, it directly enters the first frame body 62. Since there is nothing, the heat insulation effect is maintained for a long time. A mounting hole 69c is formed corresponding to the mounting screw portions 69a and 69b described above.
As shown in FIG. 6, the packing member 64 punches out the opening at the top of the cold air suction duct 67, the warm air suction duct 65, the warm air discharge duct 66, and the cold air discharge duct 68, and avoids the mounting hole 69 b along the periphery of the opening. 1 is a sheet-like member having elasticity formed continuously. The packing member 64 is compressed from the mounting hole 69c through the mounting hole 69b to the mounting screw portion 69a, whereby the packing member 64 is compressed, and the cold air suction duct 67, the warm air suction duct 65, the warm air discharge duct 66, the cool air Air leakage between the discharge ducts 68 is prevented. Furthermore, since the top plate 61 is pressed downward by the weight of the partition plates 42w and 42w, the packing member 64 is more reliably sealed.

As described above, the duct portion 60 is a vending machine because the top plate 61, the first frame body 62, the second frame body 63, and the packing member 64 are combined into one assembly part by fastening the mounting screws 69. Easy assembly. Specifically, by placing and installing the duct portion 60 on the bottom plate 11, the vending machine can be easily assembled on the production line. As a result, the assembly cost can be reduced.
Note that the second frame 63 may be formed of a sheet member having elasticity, and the second frame 63 having elasticity may be configured to also serve as the packing member 64. As a result, the same effect as described above can be obtained.
As shown in FIGS. 8 and 9, the air blowing chamber 70 is a section formed below the product carry-out chute 42 and formed between the top plate 61 of the duct portion 60 and an introduction chamber 71 communicating with the ventilation duct 45. The inflow chamber 73 that blows air to the duct portion 60 via the fan 72 and the outflow chamber 74 that discharges from the duct portion 60 into the cabinet are defined.
As shown in FIG. 9, the introduction chamber 71 is formed of a bent plate-like member whose side wall has a triangular shape in a manner in which the cross-sectional area decreases toward the front.
The inflow chamber 73 is surrounded by a partition plate 77 between the right side wall 75 and the left side wall 76 formed of a plate-like member, the back side is surrounded by a back plate, and the upper surface is surrounded by a ceiling plate 78. A fan 72 is installed on the rear side. The inflow chamber 73 is a space for switching the cooled or heated air to a cold air suction duct or a warm air suction duct by switching of passage switching means 80 described later.

The introduction chamber 71 and the inflow chamber 73 are passages for returning the air to be cooled or heated to the cooling / heating unit 90, and the cold and warm air suction ports in the inflow chamber 73 and the discharge ports in the outflow chamber 74 are connected to each other. Wall surfaces are configured to be isolated.
The fan 72 is a so-called box fan structure that blows and circulates air that cools or heats the products in the product storage boxes 40a, 40b, and 40c, and blows air downward from above.
The outflow chamber 74 has openings on the lower side and the upper side, and is used for sending the cooled or heated air from the cooling / heating unit 90 to the interior via the cold air discharge duct 68 and the warm air discharge duct 66. is there. The outflow chamber 74 is formed between a side wall right 75 a and a side wall left 76 a extending forward in the lower half of the front edge of the side wall right 75 and the left side wall 76. The right side wall 75a and the left side wall 76a are trapezoidal sheet metal members that are inclined from the middle of the front side corresponding to the inclination of the product carry-out chute 42.
The passage switching means 80 is installed in the blower chamber 70 as shown in FIG. 9 and is used for switching between cool air and warm air to be circulated to the product storages 40a and 40b. A lid 81, a suction lid 82 for switching the suction port, a drive mechanism 83 for driving the lid, and a base plate 89 are provided.

As shown in FIGS. 9 and 11, the discharge lid 81 includes a main body 81a which is a box-shaped bent sheet metal member having an opening below, a heat insulating material 81b housed inside the main body 81a, and a main body 81a. The four cylindrical pins 81c extending from the left and right side surfaces of the main body 81a and the engagement pieces 81d and 81e projecting upward in such a manner as to face each other at a predetermined interval from the upper surface of the main body 81a.
The suction lid 82 also has the same shape as the discharge lid 81 and includes a main body 82a, a heat insulating material 82b, four pins 82c, and engagement pieces 82d and 82e.
As shown in FIGS. 9 to 11, the drive mechanism 83 includes an operation lever 84, a drive rod 85, a pinion 86, a guide plate 87, and a wind shield plate 88 (shield plate).
The operation lever 84 is a plate-like member for operating opening / closing of the discharge lid 81 and the suction lid 82 from the outside of the blower chamber 70. As shown in FIG. 10, the operation lever 84 includes a rack 84a that forms a tooth groove horizontally at the tip, a guide groove 84b that is formed so as to slide the operation lever 84 horizontally, and a guide groove 84b. The guide pin 84c fixed to the right side wall 75a, the hole 84d convenient for inserting a finger or the like to drive the operation lever 84, and the engagement pieces 81d and 81e of the discharge lid 81 are engaged. Drive pin 84e.
The drive rod 85 is a plate-like member for operating opening and closing of the suction lid 82 in conjunction with the operation lever 84. The drive rod 85 includes a rack 85a that forms a tooth groove horizontally at the tip, a guide groove 85b that is formed in such a manner as to slide the drive rod 85 horizontally, and a right side wall 75 that engages with the guide groove 85b. And a drive pin 85e that engages with the engagement pieces 82d and 82e of the suction lid 82.

The pinion 86 is pivotally supported on the right side wall 75, engages with the rack 84 a and the rack 85 a, and transmits the operation of the operation lever 84 to the drive rod 85. The operation lever 84 and the drive rod 85 move in directions opposite to each other.
The guide plate 87 is a plate-like member, and is installed at a position facing the side wall right 75 and 75a side wall left 76 and 76a, respectively. The guide plate 87 is for restricting the movement of the discharge lid 81 and the suction lid 82, and each guide plate 87 has a short horizontal groove at both ends and a long horizontal groove in the middle. And the two guide grooves 87a which form the groove | channel inclined between the horizontal grooves are formed in the aspect extended in the depth direction. Specifically, the guide groove 87a includes a short horizontal portion 87aa, an oblique side portion 87ab inclined upward, a long horizontal portion 87ac, an oblique side portion 87ad inclined downward, and a short horizontal portion 87ae. Each guide groove 87a engages with guide pins 81c, 81c, 82c, and 82c fixed to the side surfaces of the discharge lid 81 and the suction lid 82.
The drive pin 84e is fixed to the operation lever 84 and engaged with the engagement pieces 81d and 81e. Specifically, the drive pin 84e is fixed to the operation lever 84 and moves horizontally, the horizontal direction of the drive pin 84e is in contact with the engagement pieces 81d and 81e, and the vertical direction moves the engagement pieces 81d and 81e. It is slidable. Further, the drive pin 84e is guided to move in the horizontal direction along the guide groove 75b that is horizontally drilled in the wall surface right 75a.

Similarly to the drive pin 84e, the drive pin 85e is fixed to the drive rod 85, engages with the engagement pieces 82d and 82e, regulates the horizontal direction, and allows the vertical direction to slide. Further, the drive pin 85e is guided to move in the horizontal direction along a guide groove 75c that is formed in the wall wall right 75 in a horizontal perforation.
The wind shielding plate 88 is for shielding the guide groove 75c over the entire area where the drive rod 85 moves, and is a horizontally long plate-like member installed in the drive rod 85 via the guide groove 75c.
The operation of the passage switching means 80 will be described in the case of switching from the cooling operation state (a) to the heating operation state (c) as shown in FIG.
When the operating lever 84 is pushed in the back direction, the operating lever 84 slides along the guide groove 84b, the drive pin 84e fixed to the operating lever 84 moves horizontally, and engages with the engaging pieces 81d and 81e. Then, the discharge lid 81 is driven. The discharge lid 81 is restricted by the guide groove 87a and first moves along the horizontal portion 87aa and then rises along the oblique side portion 87ab. At this time, the guides in the vertical direction are guided by the engagement pieces 81d and 81e and the drive pin 84e so that the discharge lid 81 is not inclined and locked. Next, the discharge lid 81 moves along the horizontal portion 87ac as shown in FIG. 12B, descends along the oblique side portion 87ad, moves to the horizontal portion 87ae, and is shown in FIG. 12C. By stopping at the position, the cool air discharge port 61j is closed and the warm air discharge port 61i is opened.

On the other hand, the suction lid 82 moves in the forward direction when the rack 84a of the operation lever 84, the pinion 86, and the rack 85a of the drive rod 85 are engaged with each other. The moving operation is performed in the same manner as described above, and the suction lid 82 is regulated by the guide groove 87a, and the drive pin 85e fixed to the drive rod 85 and the engagement pieces 82d and 82e are engaged and driven. Then, the cold air inlet 61g is closed and the warm air inlet 61h is opened.
Thus, as a result of holding the vertical pressing force by the short horizontal portions 87aa and 87ae formed on both sides of the guide groove 87a, the discharge lid 81 and the suction lid 82 are surely sealed.
Further, since the wind shield plate 88 moves together with the drive rod 85 and shields the guide groove 75c over the entire area, the flow of air between the inflow chamber 73 and the inside of the cabinet is restricted, so that the occurrence of heat loss is suppressed. Is done.
As shown in FIG. 13, the cooling / heating unit 90 is defined as a heating chamber 91, a cooling chamber 92, and an exhaust heat chamber 93 by heat insulating walls, and is a cassette type that is detachably attached to the machine chamber 50 from the front. Structure. A flexible seal member is affixed to the upper surface of the cooling / heating unit 90 inserted in the machine room 50, and is pushed up by a pop-up mechanism (not shown) installed in the lower part of the machine room 50. It is in close contact with the lower wall surface of the bottom plate 11 and communicates with the duct portion 60.

The refrigeration circuit is configured as shown in FIG. That is, the discharge side of the first compressor 94 a of the two-stage compressor 94 is connected to the suction side of the second compressor 94 b via the intermediate heat exchanger 95. The discharge side of the second compressor 94b is connected to a heating heat exchanger 96 that sends heated air into the chamber, and is connected to the electronic expansion valve 100 via a gas cooler 97 and a high-pressure side pipe 98a of the internal heat exchanger 98. Yes. The electronic expansion valve 100 is connected to an evaporator 102 (cooling heat exchanger) that sends cooling air into the cabinet through an electromagnetic valve 101, and the first compression unit 94 a is connected to the internal heat exchanger 98 through a low-pressure side pipe 98 b. Connected to the suction side. In addition, the evaporator 102 which cools three goods storage 40a, 40b, 40c is performed by one, and it is a simple piping structure as a refrigerating cycle which cools and heats several goods storage.
As shown in FIG. 13, the heating chamber 91 houses a part (rear part) of the compressor 94, a heating heat exchanger 96, and a heater 99 for auxiliary heating.
The heating chamber 91 communicates with the warm air suction port 62 c of the warm air suction duct 65 and the warm air discharge port 62 d of the warm air discharge duct 66. Therefore, air is supplied from the product storage to the heating chamber 91 through the warm air suction port 62c, and then air is supplied from the heating chamber 91 to the product storage through the warm air discharge port 62d.

The cooling chamber 92 accommodates the internal heat exchanger 98 and the evaporator 102, is located on the right side of the cooling / heating unit 90, has an open top surface, and is long in the depth direction defined by the heat insulating wall. It is space.
The cooling chamber 92 communicates with the cold air suction port 62 a of the cold air suction duct 67 and the cold air discharge port 62 b of the cold air discharge duct 68. Accordingly, air is supplied from the product storage to the cooling chamber 92 through the cold air inlet 62a, and then air is supplied from the cooling chamber 92 to the product storage through the cold air outlet 62b.
The exhaust heat chamber 93 houses a part (front part) of the compressor 94, an intermediate heat exchanger 95, a gas cooler 97, and an outdoor fan 97 a, and a part (front part) of the compressor 94, the intermediate heat exchanger 95. The heat of the gas cooler 97 is sent out to the outside of the vending machine.
The compressor 94 compresses the refrigerant into a high temperature and high pressure state, and a two-stage compressor that performs a compression action in two steps is employed. The two-stage compressor includes a first compressor 94a and a second compressor 94b, and an intermediate heat exchanger 95 is interposed between the first compressor 94a and the second compressor 94b. Yes. Further, as shown in FIG. 15, the compressor 94 is provided with fins 94 c for heat dissipation on the rear surface, and the rear part of the compressor 94 including the fins 94 c is inserted into the heating chamber 91.

The intermediate heat exchanger 95 is for radiating heat without increasing the compression temperature of the refrigerant at once in order to increase the efficiency of the compressor 94. The intermediate heat exchanger 95 includes, 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 heating heat exchanger 96 dissipates the heat of condensation by condensing the refrigerant, and uses the heat of condensation for heating in the cabinet. 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 heating heat exchanger 96 includes, for example, a so-called fin-and-tube type condenser in which a copper tube penetrates an aluminum fin that is an aluminum plate-like body.
The gas cooler 97 is configured to dissipate the heat of condensation around the gas cooler 97 by condensing the refrigerant and to heat the air around the gas cooler 97. 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 97 is constituted by a so-called fin-and-tube type condenser in which, for example, an aluminum fin, which is an aluminum plate, is penetrated by a copper tube, and is disposed on the rear side of the intermediate heat exchanger 95.

The outdoor fan 97a is disposed between the compressor 94 and the gas cooler 97, and ventilates the intermediate heat exchanger 95, the gas cooler 97, and the compressor 94 to send exhaust heat from the back of the vending machine. It is.
The internal heat exchanger 98 performs heat exchange between the high-pressure refrigerant flowing from the gas cooler 97 to the electronic expansion valve 100 and the low-pressure refrigerant flowing from the evaporator 102 to the compressor 94. Therefore, in the internal heat exchanger 98, the high pressure side pipe 98a in which the refrigerant flows from the gas cooler 97 to the electronic expansion valve 100 and the low pressure side pipe 98b in which the refrigerant flows from the evaporator 102 to the compressor 94 can exchange heat with each other. It arrange | positions in the aspect which counterflows at distance.
The heater 99 is disposed at a position in front of the heating heat exchanger 96 and assists heating in the storage. A reflective member (not shown) is attached to the front surface of the heating chamber 91 facing the heater 99. The reflecting member prevents the heating chamber 91 from being damaged by the air heated by the heater 99.
As shown in FIG. 14, the electronic expansion valve 100 is connected to an internal heat exchanger 98 accommodated in the heating chamber 91 via a refrigerant pipe, and adiabatically expands the refrigerant condensed in the gas cooler 97. This is for reducing the pressure of the expanded refrigerant to low temperature and low pressure. The opening degree of the electronic expansion valve 100 is controlled by the control device 200.

The solenoid valve 101 is connected to the electronic expansion valve 100 via a refrigerant pipe, and discharges the refrigerant to the evaporator 102 in the open state, while blocking the refrigerant in the closed state.
The evaporator 102 is a so-called fin-and-tube heat exchanger for absorbing the heat of evaporation by evaporating the refrigerant and using the heat of evaporation for cooling in the cabinet. The shape is elongated in the depth direction corresponding to. As shown in FIG. 3, the back side of the evaporator 102 faces the cold air inlet 62 a that flows into the cooling chamber 92, and the front side of the evaporator 102 faces the cold air outlet 62 b that flows out from the cooling chamber 92. It is arranged.
As shown in FIG. 1, the control means 200 is installed inside the outer door 20, has a main control unit, a memory, and the like inside, and controls the temperature of the in-compartment sensor installed in the upper part of the blower chamber 70. This is for detecting and controlling the operation of the cooling / heating unit 90 and the fan 72 to bring the products in the product storage units 40a, 40b, 40c to a predetermined temperature. Selection of cooling and heating for each of the commodity storages 40a, 40b, and 40c is performed by the operation mode SW.
In such a configuration, when the cooling / heating unit 90 and the fan 72 are operated, the refrigerant compressed by the first compressor 94a of the two-stage compressor 94 is radiated once by the intermediate heat exchanger 95 as shown in FIG. Further, it is compressed to a high pressure by the second compressor 94b. The compressed refrigerant is radiated by the heating heat exchanger 96 and the gas cooler 97, performs heat exchange in the internal heat exchanger 98 and flows into the electronic expansion valve 100. The refrigerant expanded to low temperature and low pressure by the electronic expansion valve 100 flows into the evaporator 102 via the electromagnetic valve 101 and evaporates to cool the internal air. Thereafter, the evaporated refrigerant returns to the inlet of the two-stage compressor 94 via the low-pressure side pipe 85 b of the internal heat exchanger 98.

Here, when the operation mode SW is selected so as to cool the products in all the product storages 40a, 40b, and 40c (the state in which the vending machine is set in this way is referred to as “CCC mode”), the opening / closing operation lever 84 is turned on. As shown in FIGS. 3 and 8, the warm air suction ports 61c and 61h and the warm air discharge ports 61f and 61i of the product storage boxes 40a and 40b are closed and the cold air suction ports 61d and 61g and the cold air discharge ports are closed. 61e and 61j are opened.
The internal air of the product storages 40a, 40b, 40c joins the cooling suction duct 67 from the rear duct 44, the ventilation duct 45, the introduction chamber 71, and the inflow chamber 73 through the cold air suction ports 61a, 61d, 61g. The merged internal air enters the cooling chamber 92 from the cold air inlet 62a, is cooled in the evaporator 102, and flows into the cold air discharge duct 68 from the cold air outlet 62b. The internal air that has flowed into the cold air discharge duct 68 is diverted to the cold air discharge ports 61b, 61e, 61j, and is sent out from the outflow chambers 74 to cool the goods in the warehouse. The cooled internal air is collected from each rear duct 44 and repeats the above-described internal circulation.
And the fan 72 is turned on until the temperature sensor (not shown) arrange | positioned in goods storage 40a, 40b, 40c becomes OFF setting temperature (for example, 5 degreeC). Then, the air cooled in the cooling chamber 92 circulates in the product storage in which the fan 72 is turned on, and the product is cooled in the product storage 40a, 40b, 40c. Then, the internal temperature decreases with the passage of time, and when the fan 72 is turned off, the internal temperature increases with the passage of time. Therefore, when the temperature sensor reaches the ON set temperature (for example, 8 ° C.), the fan 72 is turned on. . By repeating this, the temperature in the cabinet is kept within the set temperature. In the case of a product storage where the internal temperature reaches the set temperature for the first time, the fan 72 of the product storage is turned off, and the fan 72 of the product storage that does not reach the set temperature is kept on. In this way, the control means 200 controls the temperature in the warehouse by controlling the fan 72 on and off for each product storage.

Further, when the product is warmed in the product storage 40a and the product is cooled in the product storage 40b, 40c (the state in which the vending machine is set in this way is referred to as “HCC mode”), as shown in FIGS. The operation lever 84 of the passage switching means 80 is pushed inward to close the cold air suction port 61g and the cold air discharge port 61j of the product storage 40a, while the warm air suction port 61h and the warm air discharge port of the product storage 40a are closed. Open 61i.
When the passage switching means 80 is operated, the guide groove 75c opened between the interior and the inflow chamber 73 has the wind shield plate 88 moved together with the drive rod 85 so that the opening of the guide groove 75c can be moved over the entire area. Therefore, the flow of air between the inflow chamber 73 and the inside of the warehouse is restricted, so that the occurrence of heat loss is suppressed.
As shown in FIG. 4, the internal air of the product storage case 40a flows into the warm air suction duct 65 through the warm air suction port 61h from the rear duct 44, the ventilation duct 45, the introduction chamber 71, and the inflow chamber 73. The inflowing internal air enters the heating chamber 92 from the warm air suction port 62c and is heated by the heating heat exchanger 96 and the fin 94c of the compressor 94, and further heated by the heater 99 as necessary. The heated internal air flows into the warm air discharge duct 66 from the warm air discharge port 62d, and is sent out from the warm air suction port 61i to the interior via the outflow chamber 74 to heat the product in the warehouse. The internal air which heated the goods is collect | recovered from the back surface duct 44, and repeats the above-mentioned internal circulation.

Thus, in the heating chamber 91, the heat radiation of the compressor 94 is released by the fins 94c and used for heating the internal air, so that the heating capacity of the heating chamber 91 is increased and the efficiency of the cooling / heating unit 90 is increased. Can be improved.
Then, the fan 72 is turned on until a temperature sensor (not shown) disposed in the product storage 40a, 40b, 40c reaches an OFF set temperature (for example, heating is 55 ° C. and cooling is 5 ° C.). To do. Then, the air warmed in the heating chamber 91 circulates in the product storage case 40a in which the fan 72 is turned on, and the product is warmed in the product storage case 40a. On the other hand, the air cooled in the cooling chamber 92 circulates in the product storage boxes 40b and 40c in which the fan 72 is turned on, and the products are cooled in the product storage boxes 40b and 40c. As the time elapses, the temperature inside the product storage 40a rises, and the temperature inside the product storage 40b, 40c falls. When the fan 72 is turned off, the inside temperature of the product storage case 40a is lowered, and the inside temperature of the product storage cases 40b and 40c is raised. When the temperature sensor reaches the ON set temperature (for example, heating is 52 ° C. and cooling is 8 ° C.), the fan 72 is turned on again. By repeating this, the internal temperature is kept at the set temperature. In addition, the on / off operation of the internal fans of each of the product storage cases 40a, 40b, and 40c is performed independently by the control means 200.

In addition, when the products in the product storage units 40a and 40b are warmed and the products in the product storage unit 40c are cooled, the "HHC mode" is used. When the products in the product storage units 40a and 40c are cooled, the products in the product storage unit 40b are heated. In the “CHC mode”, the operation is performed in the same manner as described above.
Therefore, in the heating chamber 91, the heat dissipated from the compressor 94 is exhausted by the fins 94c and used for heating the internal air, so that the heating capacity of the heating chamber 91 can be increased and the efficiency of the cooling / heating unit 90 can be improved. .
Another embodiment 2 will be described with reference to FIG. FIG. 16 is a schematic diagram showing the configuration of the compressor 94 and the heating chamber 91 in the second embodiment. The difference from the above-described first embodiment is that the compressor 94 is installed separately from the heating chamber 91, and the rest is substantially the same as the above-described first embodiment. Omitted.
As shown in FIG. 16, a heat transfer means 105 that thermally connects the inside of the heating chamber 91 and the outer surface of the compressor 94 is provided. Specifically, the heat transfer means 105 includes a heat pipe heat absorption part 105a installed on the outer surface of the compressor 94, a heat pipe main body 105b connected to the heat pipe heat absorption part 105a, and a heat pipe main body 105b connected to heat. The heat pipe heat dissipating part 105c connected to the outer surface of the chamber 91 and the exhaust heat recovery heat exchanger 105d (such as a heat sink) connected to the heat pipe heat dissipating part 105c and installed in the heating chamber 91 are configured. . In addition, the heat pipe main body 105b is installed so that the connection part with the heat pipe heat radiation part 105c may be above the connection part with the heat pipe heat absorption part 105a.

The heating operation related to the heating chamber 91 with this configuration will be described. The circulation of the internal air for heating the inside of the chamber is the same as that in the first embodiment, and the internal air flowing into the heating chamber 91 is heated by the heating heat exchanger 96 and the exhaust heat recovery heat exchanger 105d inside the heating chamber 91. Is done. That is, the heat radiation from the compressor 94 is thermally conducted to the heat pipe heat absorbing portion 105a and is conducted to the heat pipe main body 105b. In the heat pipe main body 105b, the refrigerant sealed inside evaporates and the boiling heat is transferred to the heat pipe heat radiating portion 105c. The heat transferred to the heat pipe heat radiating portion 105c is transferred to the exhaust heat recovery heat exchanger 105d by heat conduction, and the circulating internal air is heated by the exhaust heat recovery heat exchanger 105d.
Therefore, in the heating chamber 91, the heat of the compressor 94 is used to heat the internal air by the heat transfer means 105, so that the heating capacity of the heating chamber 91 can be increased and the efficiency of the cooling / heating unit 90 can be improved. Furthermore, since the compressor 94 can be disposed separately from the heating chamber 91, the compressor 94 can be installed at a suitable position of the outdoor fan 97, so that the efficiency of the compressor 94 can be improved.
Another embodiment 3 will be described with reference to FIG. FIG. 17 is a schematic diagram showing the configuration of the compressor 94 and the heating chamber 91 in the third embodiment. The difference from the second embodiment described above is that a heat transfer means 106 having a self-excited vibration heat pipe 105f is installed in the compressor 94 and the heating chamber 91 instead of the heat transfer means 105 having the heat pipe body 105b. Since the other points are substantially the same as those of the second embodiment, the description thereof is omitted.

As shown in FIG. 17, the heat transfer means 106 includes a heat pipe heat absorption part 105a installed on the outer surface of the compressor 94, a self-excited vibration heat pipe 105f connected to the heat pipe heat absorption part 105a, and a self-excitation vibration heat pipe. The heat pipe heat dissipating part 105c connected to 105f and connected to the outer surface of the heating chamber 91, and the exhaust heat recovery heat exchanger 105d connected to the heat pipe heat dissipating part 105c and installed in the heating chamber 91. Yes. The self-excited vibration heat pipe 105f is not limited by the positional relationship between the connection portion with the heat pipe heat dissipation portion 105c and the connection portion with the heat pipe heat absorption portion 105a.
In this configuration, the heating operation related to the heating chamber 91 is as described above, and the heat radiation from the compressor 94 thermally conducted to the heat pipe heat absorption part 105a boils to the heat pipe heat radiation part 105c by the self-excited vibration heat pipe 105f. Heat is transferred and the circulating internal air is heated by the exhaust heat recovery heat exchanger 105d.
Therefore, in the heating chamber 91, the heat of the compressor 94 is used to heat the internal air by the heat transfer means 105, so that the heating capacity of the heating chamber 91 can be increased and the efficiency of the cooling / heating unit 90 can be improved. Furthermore, since the compressor 94 can be arranged separately from the heating chamber 91 and there is no restriction on the connection position of the self-excited vibration heat pipe 105f, the compressor 94 can be installed at a suitable position of the outdoor fan 97. The efficiency of the compressor 94 can be improved.

  As described above, the vending machine according to the present invention is useful for cooling products stored in a plurality of product storage boxes by using a single evaporator to divert and merge cold air ducts. .

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the whole vending machine which shows Example 1 which concerns on this invention. It is a front view which shows the state which open | released the outer door and the inner door of the vending machine shown in FIG. It is II-II sectional drawing of the vending machine shown in FIG. It is III-III sectional drawing of the vending machine shown in FIG. It is a perspective view of a duct part. It is an exploded view of a duct part. It is the perspective view which looked at the 2nd frame of the duct part from the bottom. FIG. 3 is a cross-sectional perspective view of the vending machine shown in FIG. 2. It is a perspective view of a passage switching means. It is a side view of a passage switching means. It is sectional drawing of a passage switching means. It is an operation | movement figure of a channel | path switching means. It is a perspective view of a cooling / heating apparatus. FIG. 2 is a refrigerant circuit diagram of the vending machine shown in FIG. 1. It is a schematic diagram of a compressor. Schematic diagram of the compressor in the second embodiment Schematic diagram of the compressor in the third embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body cabinet 40a, 40b, 40c Goods storage 60 Duct part 61 Top plate 61e, 61i Warm air outlet 61d, 61h Warm air inlet 61b, 61f, 61j Cold air outlet 61a, 61c, 61h Cold air inlet 62 1st frame Body 63 Second frame 64 Packing member 65 Warm air suction duct 66 Warm air discharge duct 67 Cold air suction duct 68 Cold air discharge duct 70 Blower chamber 71 Introduction chamber 72 Fan 73 Inflow chamber 74 Outflow chamber 75, 75a Side wall right 75c Guide groove 76, 76a Side wall left 77 Partition plate 78 Ceiling plate 80 Passage switching means 81 Discharge lid body 82 Suction lid body 83 Drive mechanism 84 Operation lever 84e Drive pin 85 Rod 85e Drive pin 86 Pinion 87 Guide plate 90 Cooling / heating unit 91 Heating chamber 92 Cooling chamber 93 Heat exhaust section 94 Compressor 94c Fin 96 Heating heat exchanger 102 Evaporator 105, 106 Heat transfer means

Claims (6)

A plurality of product storage chambers storing products, a cooling chamber having a cooling heat exchanger for cooling the product storage chamber, a heating chamber having a heating heat exchanger for heating the product storage chamber, a product storage chamber and a cooling chamber, A vending machine having a cooling passage connecting the product storage chamber and the heating chamber, a passage switching means for switching the cooling passage and the heating passage connected to the product storage chamber,
A duct portion that forms the cooling passage and the heating passage with a first frame body that forms a duct in a groove shape with a heat insulating material and a top plate that is placed on the upper surface of the first frame body; A vending machine comprising a second frame body that is formed in a thin wall shape with low water absorption in such a manner that the duct portion surrounds the outer surface of the first frame body.     The duct portion has a packing inserted between the top plate and the second frame body, and a plurality of fastening means are arranged on an outer peripheral edge. By the fastening means, the top plate, the first frame, The vending machine according to claim 1, wherein the frame, the second frame, and the packing are integrally fastened.   The passage switching means selectively switches the discharge port and the suction port of the cooling passage and the discharge port and the suction port of the heating passage in conjunction with an opening / closing mechanism, and the opening / closing mechanism is connected to the pinion and each other. The vending machine according to claim 1, further comprising a rack that slides in the opposite direction.   An engagement hole that is provided with a partition wall that isolates the discharge port and the suction port in the product storage chamber, and engages with an engagement piece that simultaneously drives a lid that opens and closes the discharge port and the suction port. The vending machine according to claim 3, further comprising a shielding plate that shields the engagement hole in conjunction with the movement of the engagement piece. The vending machine according to claim 1, wherein a part of the compressor is inserted into the heating chamber, and fins are provided on an outer peripheral portion of the inserted compressor. 2. The vending machine according to claim 1, further comprising heat transfer means for thermally connecting the inside of the heating chamber and the outer surface of the compressor.

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