JP2015175585A - Automatic selling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic selling machine capable of further energy saving.SOLUTION: An automatic selling machine 100 comprises: a refrigerating machine 1; a compressor 61 for compressing refrigerant; a condenser 62 for condensing the refrigerant; a capillary 63 for expanding the refrigerant condensed by the condenser 62; inside heat exchangers 65b and 65c during cooling operation, for cooling a right chamber 5a, a middle chamber 5b, and a left chamber 5c of the automatic selling machine 100 by evaporating the refrigerant expanded by the capillary 63 while during heating operation, for heating the middle chamber 5b and the left chamber 5c by condensing the refrigerant compressed by the compressor 61; cold storage parts 78a and 78b provided on the entrance side of the inside heat exchangers 65b and 65c for reserving cold of the refrigerant by the latent heat of a phase-changing cold storage material; and heat storage parts 79a and 79b provided on the discharge side of the inside heat exchangers 65b and 65c for reserving cold of the refrigerant by the latent heat of a phase-changing heat storage material.

Description

  The present invention relates to a vending machine, and more particularly, to a vending machine including a cold storage unit that stores cold heat of a refrigerant.

  DESCRIPTION OF RELATED ART Conventionally, the freezing apparatus provided with the cool storage part which stores the cold heat of a refrigerant | coolant is known (for example, refer patent document 1). Patent Document 1 discloses a refrigeration apparatus including a compressor, a condenser, a decompression device, and an evaporator. In this refrigeration apparatus, a cool storage unit for storing cool heat of the evaporator is provided on the top of the evaporator. And while the cold storage of an evaporator is stored in a cool storage part during a driving | operation of a compressor, and the driving | operation of a compressor is stopped, cooling is performed by the cold heat stored in the cool storage part. As a result, the operation time of the compressor is reduced, so that energy saving can be achieved. In the cold storage unit, an antifreeze such as brine is used as a cold storage material. That is, in the said patent document 1, the cold heat | fever of an evaporator is stored by utilizing the sensible heat (heat accompanying a temperature change) of antifreeze liquids, such as a brine.

JP-A-8-327162

  In the refrigeration apparatus described in Patent Document 1, it is possible to save energy by providing a cold storage unit that uses sensible heat, while further energy saving is desired.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a vending machine capable of further energy saving.

  A vending machine according to one aspect of the present invention is expanded by a compressor that compresses a refrigerant, a condenser that condenses the refrigerant, an expansion unit that expands the refrigerant condensed by the condenser, and an expansion unit during cooling operation. The internal heat exchanger that heats the interior by condensing the refrigerant compressed by the compressor during the heating operation and the interior heat exchanger A cold storage unit that is provided on the inlet side or the outlet side and stores the cold heat of the refrigerant by the latent heat of the cold storage material that changes in phase.

  In the vending machine according to one aspect of the present invention, as described above, the vending machine includes a cold storage unit that is provided on the inlet side or the outlet side of the internal heat exchanger and stores the cold heat of the refrigerant by the latent heat of the phase change cold storage material. Compared to cool storage materials that use sensible heat (heat accompanied by temperature changes), the heat storage density is large (the amount of stored cold heat is large), so even if the compressor is stopped during cooling operation, cool storage for a longer time The inside of the warehouse can be cooled by cold heat (latent heat) stored in the section. As a result, further energy saving can be achieved as compared with the case where a cold storage material using sensible heat is used.

  The vending machine according to the above aspect preferably further includes a heat storage unit that is provided on the inlet side or the outlet side of the internal heat exchanger and stores the heat of the refrigerant by the latent heat of the phase change heat storage material. If comprised in this way, even if a compressor is stopped at the time of a heating operation, the inside of a warehouse can be heated by the warm heat (latent heat) stored in the heat storage part, so that the compressor can be stopped, and energy is further saved. Can be achieved.

  In this case, preferably, the cold storage unit and the heat storage unit have a metal box shape, and have a recess or a hole in which at least a part of a pipe through which the refrigerant flows is embedded, and the box-shaped cold storage unit and the box-shaped storage unit A cool storage material and a heat storage material are provided inside each of the heat storage units. If comprised in this way, since the contact area of a cold storage part and a thermal storage part and piping through which a refrigerant | coolant flows can be enlarged according to the recessed part or hole provided in a cold storage part and a thermal storage part, the cold energy and thermal energy of a refrigerant | coolant can be increased. , Respectively, can be efficiently transmitted to the cold storage material and the heat storage material.

  In the vending machine further including the heat storage unit, the melting temperature of the cold storage material and the heat storage material is preferably configured to be different from each other. If comprised in this way, at the time of a cooling operation, while the cold heat | fever is stored in the cool storage material which changes a phase from a liquid to a solid with the comparatively low-temperature refrigerant | coolant which flows in into an internal heat exchanger, it flows out out of an internal heat exchanger Since the refrigerant (the refrigerant whose temperature has risen slightly from the inflowing refrigerant) is lower than the melting temperature of the heat storage material, the heat storage material remains solid (not melted) without phase change. That is, warm air is not released from the heat storage material (heat storage unit) into the cabinet due to melting of the heat storage material during the cooling operation. Further, during heating operation, the relatively high temperature refrigerant flowing out from the internal heat exchanger stores the heat in the heat storage material that changes phase from solid to liquid, while the relatively high temperature refrigerant flowing into the internal heat exchanger. Is higher than the melting temperature (solidification temperature) of the regenerator material, so that the regenerator material remains liquid (still melted). That is, due to the phase change of the cold storage material from solid to liquid during the heating operation, cold air is not released from the cold storage material (cold storage unit) into the warehouse. In this way, by making the melting temperatures of the cold storage material and the heat storage material different from each other, adverse effects from the heat storage material during the cooling operation (release of warm air) are suppressed, and adverse effects from the cold storage material during the heating operation (cold air) Release).

  In the vending machine further including the heat storage unit, preferably, the cold storage unit is disposed above the inside of the warehouse, and the heat storage unit is disposed below the inside of the warehouse. If comprised in this way, while the comparatively heavy cold heat (cold air) from the cool storage part arrange | positioned upwards in a store | warehouse | chamber flows below, the comparatively light heat from the heat storage part arrange | positioned below in a store | warehouse | chamber Since (warm air) flows upward, the interior can be efficiently cooled and heated.

  The vending machine according to the above aspect preferably further includes a bypass channel that allows the refrigerant expanded by the expansion unit to flow into the internal heat exchanger without passing through the cold storage unit. If comprised in this way, since it can suppress that the cold heat | fever of a refrigerant | coolant is stored in a cold storage part by flowing a refrigerant | coolant to a bypass flow path at the time of pull-down, the inside of a store | warehouse | chamber can be cooled rapidly at the time of pull-down. As a result, the time required for pull-down (the time for lowering the temperature in the cabinet from room temperature to a predetermined temperature) can be shortened.

  According to the present invention, as described above, further energy saving can be achieved.

1 is a perspective view of a vending machine according to a first embodiment of the present invention. It is sectional drawing of the vending machine by 1st Embodiment of this invention. It is a figure for demonstrating the cooling / heating unit of the vending machine by 1st Embodiment of this invention. It is a perspective view of the cool storage part and the heat storage part of the vending machine by 1st Embodiment of this invention. It is a figure for demonstrating the operation mode 1 of the cooling / heating unit of the vending machine by 1st Embodiment of this invention. It is a figure for demonstrating the operation mode 2 of the cooling / heating unit of the vending machine by 1st Embodiment of this invention. It is a figure for demonstrating the operation mode 3 of the cooling / heating unit of the vending machine by 1st Embodiment of this invention. It is a figure for demonstrating the cooling / heating unit of the vending machine by 2nd Embodiment of this invention. It is a figure for demonstrating the cooling / heating unit of the vending machine by 3rd Embodiment of this invention. It is sectional drawing of the vending machine by 4th Embodiment of this invention. It is a perspective view of the cool storage part (heat storage part) by the modification of 1st-4th embodiment of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

(First embodiment)
First, with reference to FIG. 1 and FIG. 2, the structure of the vending machine 100 by 1st Embodiment of this invention is demonstrated.

  As shown in FIGS. 1 and 2, the vending machine 100 according to the first embodiment includes a main body cabinet 1, an outer door 2, an inner door 3, a bottom plate 4, three independent right chambers 5a, and a middle chamber. 5b and the left chamber 5c, the machine room 7 which accommodates the cooling / heating unit 6, and the control part 8 are provided. The bottom plate 4 is configured to divide the inside of the main body cabinet 1 into two vertically. The three independent right chambers 5a, middle chamber 5b and left chamber 5c are partitioned from each other by a heat insulating partition plate 5d. The cooling / heating unit 6 is configured to heat or cool the right chamber 5a, the middle chamber 5b, and the left chamber 5c. The controller 8 is configured to control heating or cooling of the right chamber 5a, the middle chamber 5b, and the left chamber 5c. The right chamber 5a, the middle chamber 5b, and the left chamber 5c are examples of “inside” of the present invention.

  Further, as shown in FIG. 2, each of the right chamber 5a, the middle chamber 5b, and the left chamber 5c has a product storage rack 5e. The product storage rack 5e includes a front side (X1 direction side) portion 51e and a rear side (X2 direction side) portion 52e. The front portion 51e is configured to extend downward (Z2 direction) below the rear portion 52e. A heat insulating material 9 is provided on the inner surface of the main body cabinet 1 so as to cover the commodity storage rack 5e. A shooter 11 for taking out the product 200 and guiding it to the door 10 is provided below the product storage rack 5e.

  As shown in FIG. 3, the cooling / heating unit 6 includes a compressor 61, a condenser 62, a capillary 63, a flow divider 64, internal heat exchangers 65a, 65b and 65c, and a heater 66a that constitute a refrigeration cycle. And 66b. The compressor 61 is configured to compress the refrigerant. The condenser 62 is configured to condense the refrigerant. The capillary 63 is configured to expand the refrigerant condensed by the condenser 62. The cooling / heating unit 6 includes an external heat exchanger 67 provided outside the right chamber 5a, the middle chamber 5b, and the left chamber 5c, a capillary 68, and an accumulator 69 that stores a refrigerant. The right chamber 5a, the middle chamber 5b, and the left chamber 5c are provided with temperature sensors 70a, 70b, and 70c, respectively. Temperature sensors 70d and 70e are also provided on the outlet side of the compressor 61 and the inlet side of the external heat exchanger 67, respectively. In addition, a refrigerant | coolant consists of a CFC refrigerant | coolant (R134a), for example. The capillary 63 is an example of the “expanding portion” in the present invention.

  Further, as shown in FIG. 2, a fan 71 is provided on the back side (X2 direction side) of the condenser 62. The fan 71 sucks air from the front side (X1 direction side) of the machine room 7 and absorbs heat of condensation in the condenser 62 by the sucked air and absorbs exhaust heat of the compressor 61. 7 is configured to exhaust to the back side (X2 direction side).

  Further, as shown in FIG. 3, the internal heat exchangers 65a, 65b and 65c evaporate the refrigerant expanded by the capillary 63 during the cooling operation, and thereby the right chamber 5a, the middle chamber 5b and the left of the vending machine 100. The chamber 5c is configured to be cooled. The internal heat exchangers 65b and 65c are configured to heat the middle chamber 5b and the left chamber 5c by condensing the refrigerant compressed by the compressor 61 during the heating operation. Further, as shown in FIG. 2, the internal heat exchangers 65a, 65b, and 65c are covered with a wind tunnel 72 in the right chamber 5a, the middle chamber 5b, and the left chamber 5c, respectively. A fan 73 is provided in front (X1 direction) of the internal heat exchangers 65a, 65b, and 65c, and a duct 74 is provided in the rear (X2 direction). The air cooled by the internal heat exchangers 65a, 65b and 65c is blown to the product 200 by the fan 73 and is collected (sucked) by the duct 74. Heaters 66a and 66b are provided in front of the internal heat exchangers 65b and 65c (in the X1 direction), and are heated by the heaters 66a and 66b and the internal heat exchangers 65b and 65c. The air is blown to the product 200 by the fan 73 and is collected (sucked) by the duct 74.

  Next, a specific configuration of the cooling / heating unit 6 will be described with reference to FIG.

  As shown in FIG. 3, the compressor 61 is connected to the condenser 62 via the electromagnetic valve 75a. The condenser 62 is connected to the capillary 63. Further, the capillary 63 is connected to the internal heat exchanger 65a in the right chamber 5a via the flow divider 64 and the electromagnetic valve 76a. Further, the capillary 63 is connected to the internal heat exchanger 65b in the middle chamber 5b through the flow divider 64, the electromagnetic valve 76b, and the check valve 77a. The capillary 63 is connected to the internal heat exchanger 65c in the left chamber 5c via the flow divider 64, the electromagnetic valve 76c, and the check valve 77b.

  Here, in 1st Embodiment, the cool storage parts 78a and 78b which store the cold heat of a refrigerant | coolant by the latent heat of the cool storage material (not shown) which changes in phase are provided in the entrance side of the internal heat exchangers 65a and 65c. Yes. In addition, a cool storage material consists of what added water and added the additive, for example, and a paraffin type material. The regenerator material has a solidification temperature of about −5 ° C. and a melting temperature of about 0 ° C. Further, on the outlet side of the internal heat exchangers 65b and 65c, heat storage units 79a and 79b are provided that store the temperature of the refrigerant by the latent heat of a heat storage material (not shown) that changes phase. The heat storage material is made of, for example, a paraffinic material. The solidification temperature of the heat storage material is about 55 ° C., and the melting temperature is about 60 ° C. That is, the melting temperature (solidification temperature) of the cold storage material and the heat storage material is configured to be different from each other. Detailed configurations of the cold storage units 78a and 78b and the heat storage units 79a and 79b will be described later. In addition, the internal heat exchanger 65b (middle chamber 5b) is not provided with a cold storage part, while the middle chamber 5b is sandwiched between the right chamber 5a and the left chamber 5c, so that the amount of heat leak is small. For this reason, even if it does not provide a cool storage part in the middle chamber 5b, it is possible to hold | maintain the temperature of the goods 200 similarly to the right chamber 5a and the left chamber 5c.

  The outlet side of the internal heat exchanger 65 a is connected to the accumulator 69. The outlet side of the internal heat exchanger 65b is connected to the accumulator 69 via the heat storage section 79a and the electromagnetic valve 81a, and is connected to the external heat exchanger 67 via the check valve 80a. ing. The outlet side of the internal heat exchanger 65c is connected to the accumulator 69 via the heat storage section 79b and the electromagnetic valve 81b, and is connected to the external heat exchanger 67 via the check valve 80b. ing. The external heat exchanger 67 is connected to the capillary 68. The capillary 68 is connected to the flow divider 64.

  Moreover, the compressor 61 is connected to the internal heat exchanger 65c via the electromagnetic valve 75b and the cold storage part 78b. Further, the compressor 61 is connected to the internal heat exchanger 65b via the electromagnetic valve 75c.

  Next, with reference to FIG. 4, the detailed structure of the cool storage parts 78a and 78b and the heat storage parts 79a and 79b is demonstrated.

  In 1st Embodiment, the cool storage part 78a (cool storage part 78b) has the recessed part 83 in which a part of piping 82 through which a refrigerant | coolant flows is embedded while it has a metal box shape. And the cool storage material (not shown) is provided in the box-shaped cool storage part 78a (cool storage part 78b). Specifically, the cold storage part 78a (cold storage part 78b) is formed of a metal such as aluminum (Al). Moreover, the cool storage part 78a (cool storage part 78b) is formed, for example by lost wax casting. The lost wax casting is a method of forming a casting by pouring metal into a cavity formed by melting and removing the wax after the periphery of the wax is covered with sand and solidified. Moreover, the recessed part 83 in which the substantially half of the piping 82 is embedded is provided in both the surface side and back surface side of the box-shaped cool storage part 78a (cool storage part 78b). In addition, a plurality of fins 84 for heat dissipation are provided on the surface side of the cold storage part 78a (cold storage part 78b). In addition, the several fin 84 is integrally provided in the cool storage part 78a (cool storage part 78b).

  Further, as shown in FIG. 2, the cold storage unit 78a (cold storage unit 78b) is provided below the duct 74 (above the internal heat exchangers 65a and 65c). As shown in FIG. 4, the plurality of fins 84 are configured to be inserted into the duct 74 from a substantially rectangular hole 74 a provided in the duct 74. Thereby, compared with the case where the plurality of fins 84 are arranged outside the duct 74, the air flowing in the duct 74 can be brought into contact with the plurality of fins 84 more reliably. It becomes possible to dissipate cold heat efficiently.

  Further, the heat storage units 79a and 79b have substantially the same configuration as the cold storage units 78a and 78b. That is, the heat storage unit 79a (heat storage unit 79b) has a box shape made of Al and has a recess 85 in which a part of the pipe 82 through which the refrigerant flows is embedded. A heat storage material (not shown) is provided inside the box-shaped heat storage unit 79a (heat storage unit 79b). In addition, a plurality of fins 86 for heat dissipation are provided on the surface side of the heat storage unit 79a (heat storage unit 79b).

(Operation mode 1)
Next, with reference to FIG. 5, the operation (operation mode 1, CCC mode) of cooling the right chamber 5a, the middle chamber 5b, and the left chamber 5c by all three internal heat exchangers 65a, 65b, and 65c will be described. To do. In FIG. 5 (FIGS. 6 and 7), the flow path through which the refrigerant flows is represented by a thick line.

  In the operation mode 1, the solenoid valve 75a and the solenoid valves 76a to 76c are opened, and the solenoid valve 75b and the solenoid valve 75c are closed. Further, the electromagnetic valve 81a and the electromagnetic valve 81b are opened. Thus, the high-temperature refrigerant compressed by the compressor 61 is condensed in the condenser 62 and becomes a liquid. The liquefied refrigerant is expanded in the capillary 63 and becomes a gas-liquid two-phase flow. The refrigerant that has become a gas-liquid two-phase flow is diverted by the flow divider 64 and then evaporated (becomes gas) in the internal heat exchangers 65a, 65b, and 65c. At this time, the temperature of the piping 82 on the inlet side of the internal heat exchangers 65a, 65b, and 65c is, for example, −10 ° C. or more and −5 ° C. or less. And with this refrigerant | coolant, the cool storage material in the cool storage parts 78a and 78b is cooled, and it solidifies.

  In addition, the right chamber 5a, the middle chamber 5b, and the left chamber 5c are cooled as the refrigerant evaporates (becomes gas) in the internal heat exchangers 65a, 65b, and 65c. Then, the refrigerant that has become a gas is moved to the compressor 61 again via the accumulator 69. Note that the temperature of the pipe 82 on the outlet side of the internal heat exchangers 65a, 65b, and 65c is, for example, −10 ° C. or higher and + 5 ° C. or lower. Here, while the heat storage material in the heat storage parts 79a and 79b is cooled by this refrigerant, since the solidification temperature of the heat storage material is about 55 ° C., the heat storage material remains in a solid state.

  Further, when the compressor 61 is stopped during a power failure or when the compressor 61 is stopped to reduce peak power (peak cut), the temperatures of the right chamber 5a, the middle chamber 5b, and the left chamber 5c rise. At this time, the right chamber 5a and the left chamber 5c are cooled by heat of fusion caused by melting of the cold storage materials of the cold storage portions 78a and 78b (melting temperature of about 0 ° C.).

(Operation mode 2)
Next, referring to FIG. 6, among the three internal heat exchangers 65a, 65b and 65c, the internal heat exchangers 65a and 65c cool the right and left chambers 5a and 5c, respectively, and the internal heat An operation (operation mode 2, CHC mode) in which the middle chamber 5b is heated by the exchanger 65b will be described.

  In the operation mode 2, the solenoid valve 75c, the solenoid valve 76a, and the solenoid valve 76c are opened, and the solenoid valve 75a, the solenoid valve 75b, and the solenoid valve 76b are closed. Further, the electromagnetic valve 81a is closed and the electromagnetic valve 81b is opened. Thereby, the high temperature refrigerant | coolant compressed by the compressor 61 is condensed in the internal heat exchanger 65b, and the inner chamber 5b is heated. Note that the temperature of the pipe 82 on the outlet side of the internal heat exchanger 65b is, for example, + 55 ° C. or higher and + 65 ° C. or lower. Here, with this refrigerant, the heat storage material in the heat storage section 79a is melted into a liquid.

  The refrigerant condensed in the internal heat exchanger 65b is further condensed in the external heat exchanger 67 and expanded in the capillary 68 to become a relatively low-temperature gas-liquid two-phase flow. The refrigerant that has become a gas-liquid two-phase flow is diverted by the flow divider 64 and then evaporated (becomes gas) in the internal heat exchangers 65a and 65c. Here, the regenerator material in the regenerators 78a and 78b is cooled and solidified by the refrigerant (-10 ° C to -5 ° C) flowing into the internal heat exchangers 65a and 65c.

  In addition, the right chamber 5a and the left chamber 5c are cooled as the refrigerant evaporates (becomes gas) in the internal heat exchangers 65a and 65c. Then, the refrigerant that has become a gas is moved to the compressor 61 again via the accumulator 69.

  Further, when the compressor 61 is stopped, the temperature of the right chamber 5a and the left chamber 5c is increased, and the temperature of the middle chamber 5b is decreased. At this time, the right and left chambers 5a and 5c are cooled by the heat of fusion caused by melting of the cold storage materials of the cold storage portions 78a and 78b (melting temperature of about 0 ° C.), and the heat storage material of the heat storage portion 79a is solidified ( In this way, the middle chamber 5b is heated.

(Operation mode 3)
Next, referring to FIG. 7, of the three internal heat exchangers 65a, 65b and 65c, the right chamber 5a is cooled by the internal heat exchanger 65a and the internal heat exchangers 65b and 65c are used for the inside. The operation (operation mode 3, HHC mode) for heating the chamber 5b and the left chamber 5c will be described.

  In the operation mode 3, the solenoid valve 75b, the solenoid valve 75c, and the solenoid valve 76a are opened. In addition, the electromagnetic valve 75a, the electromagnetic valve 76b, the electromagnetic valve 76c, the electromagnetic valve 81a, and the electromagnetic valve 81b are closed. As a result, the high-temperature refrigerant compressed by the compressor 61 is condensed in the internal heat exchangers 65b and 65c, whereby the middle chamber 5b and the left chamber 5c are heated. The temperature of the pipe 82 on the outlet side of the internal heat exchangers 65b and 65c is, for example, + 55 ° C. or higher and + 65 ° C. or lower. Here, with this refrigerant, the heat storage material in the heat storage portions 79a and 79b is melted into a liquid.

  The refrigerant condensed in the internal heat exchangers 65b and 65c is further condensed in the external heat exchanger 67 and expanded in the capillary 68 to become a relatively low temperature gas-liquid two-phase flow. The refrigerant that has become a gas-liquid two-phase flow evaporates (becomes gas) in the internal heat exchanger 65a. Here, the regenerator material in the regenerator 78a is cooled and solidified by the refrigerant (−5 ° C. or more and about −10 ° C. or less) flowing into the internal heat exchanger 65a.

  Further, the right chamber 5a is cooled by evaporating the refrigerant (becomes gas) in the internal heat exchanger 65a. Then, the refrigerant that has become a gas is moved to the compressor 61 again via the accumulator 69.

  Further, when the compressor 61 is stopped, the temperature of the right chamber 5a increases, and the temperature of the middle chamber 5b and the left chamber 5c decreases. At this time, the right chamber 5a is cooled by the heat of fusion caused by melting of the cool storage material of the cool storage unit 78a (melting temperature of about 0 ° C.), and the heat storage materials of the heat storage units 79a and 79b are solidified (solidification temperature of about 55). ℃), the middle chamber 5b and the left chamber 5c are heated.

  In the first embodiment, the following effects can be obtained.

  In the first embodiment, as described above, by providing cold storage units 78a and 78b that are provided on the inlet side of the internal heat exchangers 65a and 65c and store the cold heat of the refrigerant by the latent heat of the cold storage material that changes in phase, Compared to a cold storage material that uses heat (heat accompanied by a temperature change), the heat storage density is large (the amount of cold energy stored is large), so even when the compressor 61 is stopped during the cooling operation, the cold storage unit 78a for a longer time. And the inside of the right chamber 5a and the left chamber 5c can be cooled by the cold (latent heat) stored in 78b. As a result, further energy saving can be achieved as compared with the case where a cold storage material using sensible heat is used.

  In the first embodiment, as described above, the heat storage units 79a and 79b that store the heat of the refrigerant by the latent heat of the phase change heat storage material are provided on the outlet side of the internal heat exchangers 65b and 65c. Thereby, even when the compressor 61 is stopped during the heating operation, the middle chamber 5b and the left chamber 5c can be heated by the heat (latent heat) stored in the heat storage units 79a and 79b, so the compressor 61 is stopped. As much as possible, further energy saving can be achieved.

  In the first embodiment, as described above, the cold accumulators 78a and 78b (heat accumulators 79a and 79b) have a metal box shape, and a recess 83 in which at least a part of the pipe 82 through which the refrigerant flows is embedded. (Recessed portion 85), and a cool storage material (heat storage material) is provided in each of box-shaped cool storage units 78a and 78b (box-shaped heat storage units 79a and 79b). As a result, the contact area between the cold storage parts 78a and 78b (heat storage parts 79a and 79b) and the pipe 82 through which the refrigerant flows is reduced by the recess 83 (recess 85) provided in the cold storage parts 78a and 78b (heat storage parts 79a and 79b). Since it can be enlarged, the cold heat of the refrigerant can be efficiently transmitted to the cold storage units 78a and 78b (heat storage units 79a and 79b), respectively.

  Moreover, in 1st Embodiment, as mentioned above, it comprises so that the melting temperature of a cool storage material and a thermal storage material may mutually differ. Thus, during the cooling operation, cold heat is stored in the cold storage material that changes phase from liquid to solid by the relatively low-temperature refrigerant flowing into the internal heat exchangers 65a and 65c, and flows out from the internal heat exchanger 65c. Since the refrigerant (the refrigerant whose temperature has risen slightly from the inflowing refrigerant) is lower than the melting temperature of the heat storage material, the heat storage material remains solid (not melted) without phase change. That is, warm air is not released from the heat storage material (heat storage section 79b) into the left chamber 5c due to the heat storage material melting during the cooling operation. Further, during the heating operation, the comparatively high temperature refrigerant flowing out of the internal heat exchangers 65b and 65c stores the heat in the heat storage material that changes in phase from solid to liquid, whereas the comparison flows into the internal heat exchanger 65c. Since the refrigerant having a high temperature is higher than the melting temperature (solidification temperature) of the regenerator material, the regenerator material remains liquid (has melted). That is, cold air is not released from the cold storage material (cool storage section 78b) into the left chamber 5c due to the phase change of the cold storage material from solid to liquid during the heating operation. In this way, by making the melting temperatures of the cold storage material and the heat storage material different from each other, adverse effects from the heat storage material during the cooling operation (release of warm air) are suppressed, and adverse effects from the cold storage material during the heating operation (cold air) Release).

(Second Embodiment)
Next, a vending machine 101 according to the second embodiment will be described with reference to FIG. In the second embodiment, bypass channels (pipes 90a and 90b) are provided for allowing the refrigerant expanded by the capillary 63 to flow into the in-compartment heat exchangers 65a and 65c without passing through the cold accumulators 78a and 78b.

  In 2nd Embodiment, as shown in FIG. 8, between the flow divider 64 and the internal heat exchanger 65a, the bypass which connects the flow divider 64 and the internal heat exchanger 65a via the solenoid valve 91a. A flow path (pipe 90a) is provided. Further, a bypass flow path (pipe 90b) connecting the flow divider 64 and the internal heat exchanger 65c via the solenoid valve 91b and the check valve 92 between the flow divider 64 and the internal heat exchanger 65c. Is provided. In operation mode 1 (CCC mode), at the time of pull-down (when the temperature in the cabinet is lowered from room temperature to a predetermined temperature), the electromagnetic valve 91a and the electromagnetic valve 91b are opened, and the electromagnetic valve 76a and The electromagnetic valve 76c is closed. As a result, the refrigerant expanded by the capillary 63 flows into the in-compartment heat exchangers 65a and 65c via the bypass passages (pipes 90a and 90b) without passing through the cold storage parts 78a and 78b. In addition, the other structure and driving | operation operation | movement of 2nd Embodiment are the same as that of the said 1st Embodiment.

  In the second embodiment, as described above, bypass channels (pipes 90a and 90b) for allowing the refrigerant expanded by the capillary 63 to flow into the internal heat exchangers 65a and 65c without passing through the cold accumulators 78a and 78b are provided. Provide. Thereby, by flowing the refrigerant through the bypass passages (pipes 90a and 90b) at the time of pulling down, it is possible to suppress the cold heat of the refrigerant from being stored in the cold accumulating units 78a and 78b. The inside of the left chamber 5c can be cooled. As a result, it is possible to shorten the time required for pull-down (the time for lowering the internal temperature from room temperature to a predetermined temperature).

(Third embodiment)
Next, a vending machine 102 according to the third embodiment will be described with reference to FIG. In 3rd Embodiment, the cool storage parts 93a, 93b, and 93c are provided in the exit side of the internal heat exchangers 65a, 65b, and 65c.

  In 3rd Embodiment, as shown in FIG. 9, the cool storage parts 93a, 93b, and 93c are provided in the exit side of the internal heat exchangers 65a, 65b, and 65c, respectively. In the third embodiment, unlike the first and second embodiments, the heat storage units 79a and 79b (see FIG. 3) are not provided. And in 3rd Embodiment, in the operation mode 1 (CCC mode), the cool storage material of the cool storage parts 93a, 93b, and 93c solidifies with the refrigerant | coolant which flowed out from the cool storage parts 93a, 93b, and 93c. Further, when the compressor 61 is stopped, the temperature of the right chamber 5a, the middle chamber 5b, and the left chamber 5c rises, and the regenerator material of the regenerators 93a, 93b, and 93c melts (melting temperature about 0 ° C.). The right chamber 5a, the middle chamber 5b, and the left chamber 5c are cooled by heat. In addition, the other structure and driving | operation operation | movement of 3rd Embodiment are the same as that of the said 1st Embodiment.

  In the third embodiment, as described above, the cold storage units 93a, 93b, and 93c are provided on the outlet side of the internal heat exchangers 65a, 65b, and 65c, so that the cold storage units 93a, 93b, and 93c are connected to the internal heat exchanger. Unlike the case where it is provided on the inlet side of 65a, 65b and 65c, it is possible to suppress an increase in the cooling load of the internal heat exchangers 65a, 65b and 65c. As a result, it can suppress that the speed which cools goods 200 becomes late.

(Fourth embodiment)
Next, a vending machine 103 according to the fourth embodiment will be described with reference to FIG. In the fourth embodiment, unlike the first to third embodiments in which the cold storage units 78a and 78b are provided below the duct 74 (above the internal heat exchangers 65a and 65c) (see FIG. 2), the cold storage is performed. The portion 94 is provided above the product storage rack 5e.

  In 4th Embodiment, as shown in FIG. 10, the cool storage part 94 is provided above the right chamber 5a and the left chamber 5c (product storage rack 5e). Specifically, it is provided at the upper corner (top) of the product storage rack 5e. On the other hand, the heat storage parts 79a and 79b are provided below the product storage rack 5e. In addition, the other structure and driving | operation operation | movement of 4th Embodiment are the same as that of the said 1st-3rd embodiment.

  In the fourth embodiment, as described above, the cool storage unit 94 is disposed above the right chamber 5a and the left chamber 5c (product storage rack 5e), and the heat storage units 79a and 79b are connected to the middle chamber 5b and the left chamber. 5c (product storage rack 5e) is disposed below. As a result, relatively heavy cold (cold air) from the cool storage unit 94 disposed above in the product storage rack 5e flows downward, and the heat storage units 79a and 79b disposed below in the product storage rack 5e. Since relatively light heat (warm air) flows upward, the right chamber 5a, the middle chamber 5b, and the left chamber 5c can be efficiently cooled and heated.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the first to fourth embodiments, the example in which the vending machine is provided with three rooms (product storage racks) of the right chamber, the middle chamber, and the left chamber is shown, but the present invention is not limited to this. . For example, two or more rooms (product storage racks) may be provided in the vending machine.

  Moreover, in the said 1st, 2nd and 4th embodiment, while the cool storage part was provided in the inlet side of the internal heat exchanger, the heat storage part was provided in the exit side of the internal heat exchanger, but the example was shown. The present invention is not limited to this. For example, the cold storage unit may be provided on the outlet side of the internal heat exchanger, and the thermal storage unit may be provided on the inlet side of the internal heat exchanger. Moreover, you may provide both a cool storage part and a heat storage part in the entrance side (or exit side) of a heat exchanger in a store | warehouse | chamber.

  Moreover, although the example which provides a cool storage part in a right chamber and a left chamber was shown in the said 1st, 2nd and 4th embodiment, this invention is not limited to this. For example, you may provide a cool storage part in all of a right chamber, a middle chamber, and a left chamber. Moreover, you may provide a cool storage part in one of a right chamber, a middle chamber, and a left chamber.

  Moreover, in the said 1st, 2nd and 4th embodiment, although the example which provides a thermal storage part in a middle chamber and a left chamber was shown, this invention is not limited to this. For example, a heat storage unit may be provided in one of the middle chamber and the left chamber.

  Moreover, in the said 3rd Embodiment, although the example which provides a cool storage part in all the three right chambers, middle chambers, and left chambers was shown, this invention is not limited to this. A cold storage unit may be provided in one or two of the three right chambers, the middle chamber, and the left chamber.

  Moreover, although the cold storage part and the heat storage part showed the example which has the box shape which consists of Al in the said 1st-4th embodiment, this invention is not limited to this. For example, the cold storage part and the heat storage part may be made of a metal other than Al. Moreover, if it is the shape which can store cold storage and heat storage, shapes other than a box shape may be sufficient.

  Moreover, although the said 1st-4th embodiment showed the example in which the recessed part by which piping is embedded in the cool storage part and the heat storage part was shown, this invention is not limited to this. For example, as shown in the modification of FIG. 11, a hole 95a (96a) including a through hole through which a pipe is inserted may be provided in the cold storage unit 95 (heat storage unit 96).

  Moreover, in the said 1st-4th embodiment, although the example using the cool storage material from which solidification temperature and melting temperature differ was shown, this invention is not limited to this. For example, a cold storage material having the same solidification temperature and melting temperature may be used. Similarly, a heat storage material having the same solidification temperature and melting temperature may be used.

  Moreover, although the example which uses a capillary as an expansion | swelling part of this invention was shown in the said 1st-4th embodiment, this invention is not limited to this. For example, an expansion valve may be used as the expansion portion.

  Moreover, although the said 1st-4th embodiment showed the example which comprises a thermal storage part from a metal, this invention is not limited to this. For example, the heat storage unit may be made of resin or the like.

  Further, in the first embodiment, in the operation mode 2 (CHC mode) (see FIG. 6), the inner chamber 5b is heated by the internal heat exchanger 65b, and the internal heat exchangers 65a and 65c Although the example which each cools the chamber 5c and the right chamber 5a was shown, this invention is not limited to this. For example, the left chamber 5c may be heated by the internal heat exchanger 65c, and the right chamber 5a and the middle chamber 5b may be cooled by the internal heat exchangers 65a and 65b (HCC mode), respectively. .

  Moreover, in the said 1st Embodiment, although shown in the operation mode 3 (HHC mode) (refer FIG. 7), the inside chamber 5b and the left chamber 5c were each heated by the internal heat exchangers 65b and 65c, The present invention is not limited to this. For example, the middle chamber 5b may be heated by the internal heat exchanger 65b, and the left chamber 5c may be heated by the heater 66b without using the internal heat exchanger 65c. In this case, the refrigerant does not flow into the internal heat exchanger 65c. Further, both the middle chamber 5b and the left chamber 5c may be configured to be heated by the heaters 66a and 66b without using the internal heat exchangers 65b and 65c. In this case, the refrigerant does not flow into the internal heat exchangers 65b and 65c.

5a Right room (inside)
5b Middle room (inside)
5c Left room (inside)
61 Compressor 62 Condenser 63 Capillary (Expansion Part)
65a, 65b, 65c Internal heat exchanger 78a, 78b, 93a, 93b, 93c, 95 Cold storage part 79a, 79b, 96 Thermal storage part 82 Piping 85 Recessed part 90a, 90b Piping (bypass flow path)
95a, 96a Hole 100, 101, 102, 103 Vending machine

Claims (6)

A compressor for compressing the refrigerant;
A condenser for condensing the refrigerant;
An expansion section for expanding the refrigerant condensed by the condenser;
During the cooling operation, the refrigerant expanded by the expansion section is evaporated to cool the inside of the vending machine, and during the heating operation, the inside of the storage is heated by condensing the refrigerant compressed by the compressor. An internal heat exchanger,
A vending machine provided with the cool storage part which is provided in the entrance side or exit side of the internal heat exchanger, and stores the cold heat of the refrigerant by the latent heat of the cool storage material which changes phase.   The vending machine according to claim 1, further comprising a heat storage unit that is provided on an inlet side or an outlet side of the internal heat exchanger and stores the heat of the refrigerant by latent heat of the phase change heat storage material. The cold storage unit and the heat storage unit have a metal box shape, and have a recess or hole in which at least a part of a pipe through which the refrigerant flows is embedded,
The vending machine according to claim 2, wherein the cool storage material and the heat storage material are provided inside each of the box-shaped cold storage unit and the box-shaped heat storage unit.   The vending machine according to claim 2 or 3, wherein melting temperatures of the cold storage material and the heat storage material are different from each other.   The vending machine according to any one of claims 2 to 4, wherein the cold storage unit is arranged above the inside of the warehouse, and the heat storage unit is arranged below the inside of the warehouse.   The vending machine according to any one of claims 1 to 5, further comprising a bypass channel that causes the refrigerant expanded by the expansion unit to flow into the internal heat exchanger without passing through the cold storage unit. .

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