JP2008051379A - Cooling and heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling and heating device, improving energy efficiency without causing lack of cooling capability and heating capability. <P>SOLUTION: A coolant radiated in a first radiator 36a provided in a first storing part 30a for performing heating is let flow into a third radiator 42, and a coolant radiated in the third radiator 42 is let flow into a second evaporator 35b and a third evaporator 35c provided in a second storing part 30b and a third storing part 30c, respectively, for performing cooling, whereby a coolant discharged from a compressor 41 can be surely radiated in the first radiator 36a and the third radiator 42 provided in the first storing part 30a for performing heating, thereby overcoming lack of cooling capability in the second evaporator 35b and the third evaporator 35c provided in the second storing part 30b and the third storing part 30c, respectively, for performing cooling. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooling and heating device that has a plurality of storages and cools or heats each storage.

Conventionally, this type of cooling and heating apparatus includes a plurality of storage units that store articles, a first heat exchanger provided in each storage unit, a second heat exchanger provided outside the storage unit, and a compression unit. Each of the first heat exchangers is configured to cool or heat an article stored in each storage unit by exchanging heat between the refrigerant and the air in each storage unit in each first heat exchanger. It is known (see, for example, Patent Document 1).
JP 2005-226912 A

  In the conventional cooling and heating apparatus, when the articles stored in some of the storage units are cooled and the articles stored in the other storage units are heated, the refrigerant circulated by the compressor is used as the second heat exchanger. The heat is dissipated in the first heat exchanger provided in the storage unit for heating the article, and the heat is absorbed in the first heat exchanger provided in the storage part for cooling the article. . In this case, the refrigerant flowing through the first heat exchanger provided in the storage unit for heating the article has a small amount of heat release to exchange heat with the air in the heated storage unit having a small temperature difference from the refrigerant, As the amount of heat released from the refrigerant is reduced, the amount of heat absorbed by the refrigerant in the first heat exchanger provided in the storage unit for cooling the article is also reduced, and the cooling capacity of the storage unit for cooling the article may be insufficient.

  Further, the compressor is always cooled by the external air, and the heat absorbed in the first heat exchanger provided in the storage unit for cooling the article is not supplied to the storage unit for heating the article, It is discharged to the outside by heat dissipation from the compressor, and heat energy is not used effectively.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a cooling and heating apparatus capable of improving energy efficiency without causing shortage of cooling capacity and heating capacity. It is in.

  In order to achieve the above object, the present invention provides a plurality of storage units that store articles, a first heat exchanger provided in each storage unit, a second heat exchanger provided outside the storage unit, and a compression unit. And a refrigerant circuit having a machine, wherein each article stored in each storage unit is cooled or heated by exchanging heat between the refrigerant and the air in each storage unit in each first heat exchanger. In the heating device, among the plurality of storage units, the refrigerant that has radiated heat in the first heat exchanger provided in the storage unit that heats the article is caused to flow into the second heat exchanger, and the second heat exchanger The refrigerant | coolant distribution | circulation means which flows in into the 1st heat exchanger provided in the accommodating part which cools articles | goods is provided with the thermally radiated refrigerant | coolant.

  Thereby, since the refrigerant | coolant which distribute | circulated the 1st heat exchanger provided in the accommodating part which heats articles | goods distribute | circulates a 2nd heat exchanger, the 1st heat provided in the accommodating part which heats articles | goods In the exchanger and the second heat exchanger, the refrigerant discharged from the compressor radiates heat reliably.

  In order to achieve the above object, the present invention provides a storage unit for storing articles, a first heat exchanger provided in the storage unit, a second heat exchanger provided outside the storage unit, and a compressor. In the cooling and heating apparatus, the heat insulation between the refrigerant and the air in the storage unit is performed in the first heat exchanger to cool or heat the article stored in the storage unit. Compressor housing portion that is provided so as to be surrounded by the material and that houses the compressor, a compressor blower for circulating air through the compressor housing portion, and air that allows external air to flow into the compressor housing portion An inlet, an air outlet through which air in the compressor storage section flows out, an air supply port for supplying air from the compressor storage section to the storage section, and air for sucking the air in the storage section into the compressor storage section Suction port, air inlet, air outlet, air The supply port and air inlet are respectively a openable closing member.

  As a result, when the storage portion is cooled, the air inlet and the air outlet are opened, and the air supply port and the air inlet are closed, so that the air heated by the heat released from the compressor is When the storage part is heated, the air inlet and the air outlet are closed, and the air supply port and the air inlet are opened to heat the storage unit. Since air is supplied to the storage unit, heat released from the compressor is supplied to the storage unit as a heat source for heating.

  In order to achieve the above object, the present invention provides a storage unit for storing articles, a first heat exchanger provided in the storage unit, a second heat exchanger provided outside the storage unit, and a compressor. In the cooling and heating apparatus, the heat insulation between the refrigerant and the air in the storage unit is performed in the first heat exchanger to cool or heat the article stored in the storage unit. A compressor housing part which is provided so as to be surrounded by the material and which stores the compressor, a compressor blower for circulating air to exchange heat with the compressor in the compressor housing part, and an external to the compressor housing part The air intake port through which the air flows in, the air outflow port through which the air in the compressor housing portion flows out, and the open / close members that can open and close the air intake port and the air outflow port, respectively.

  Thereby, when cooling a storage part, the air heated by the heat discharge | released from a compressor is discharged | emitted outside by opening an air inflow port and an air outflow port, and a storage part is heated. In this case, since the heat radiation from the compressor is suppressed by closing the air inlet and the air outlet, the amount of heat equal to the amount of heat released from the compressor heats the storage portion. Released in the heat exchanger.

  According to the present invention, the refrigerant can be reliably radiated in the first heat exchanger and the second heat exchanger provided in the storage unit that heats the article, so that the refrigerant is provided in the storage unit that cools the article. Moreover, it becomes possible to eliminate the shortage of cooling capacity in the first heat exchanger.

  In addition, according to the present invention, when the storage unit is heated, heat released from the compressor can be supplied to the storage unit as a heat source for heating, so that energy efficiency can be improved. .

  Further, according to the present invention, when the storage section is heated, the heat released from the compressor can be released in the first heat exchanger of the storage section, so that it is possible to improve energy efficiency. It becomes.

  1 to 13 show an embodiment of the present invention. FIG. 1 is an overall perspective view of a vending machine, FIG. 2 is a front sectional view of the vending machine, and FIG. 3 is a side sectional view of the vending machine. 4 is a perspective view of the shutter showing a state where the opening is closed, FIG. 5 is a perspective view of the shutter showing a state where the opening is opened, FIG. 6 is a schematic configuration diagram of a vending machine showing a refrigerant circuit, and FIG. FIG. 8 is a block diagram showing the control system, FIG. 8 is a schematic configuration diagram of a vending machine showing a case where the first storage unit, the second storage unit, and the third storage unit are all cooled, and FIG. 9 is the first storage unit. FIG. 10 is a flow chart relating to the operation of the compressor, FIG. 11 is a flow chart relating to the operation of the electric heater, and FIG. FIG. 12 is a flowchart relating to a machine room blower, FIG. While heating the first housing portion and second housing portion is a schematic diagram of an automatic vending machine showing the case of cooling the third compartment.

  This vending machine includes a vending machine body 10 having an open front surface and an outer door 20 that opens and closes the front surface of the vending machine body 10.

  The vending machine main body 10 is divided into an upper part and a lower part, so that a product storage unit 30 is provided in the upper part and a machine room 40 is provided in the lower part.

  The outer door 20 is provided with a sample display unit 21 for storing product samples, a product selection switch 22, a coin slot 23, a bill slot 24, a return lever 25, a coin return slot 26, and a product outlet 27 on the front surface. ing. The outer door 20 is rotatably supported at one end in the width direction at one end in the width direction of the vending machine main body 10.

  The product storage unit 30 is formed with a heat insulating material 31 on the upper surface side, the back surface side, the bottom surface side, and the left and right side surfaces, and the front surface side of the product storage unit 30 is opened and closed by a heat insulating inner door 32. . The product storage unit 30 is divided into left and right by a heat insulating partition plate 33, and a first storage unit 30a, a second storage unit 30b, and a third storage unit 30c are provided. In the first storage unit 30a, the second storage unit 30b, and the third storage unit 30c, there are a plurality of product storage columns 34 that store products stacked one above the other and that can carry out products one by one from the lower end side. Each is provided.

  The first storage unit 30a stores the first evaporator 35a as a first heat exchanger for cooling the product stored in the first storage unit 30a, and the first storage unit 30a. A first heat radiator 36a serving as a first heat exchanger for heating the product, and a first evaporator 35a or a refrigerant flowing through the first heat radiator 36a for circulating air for heat exchange. A first blower 37a and a first electric heater 38a are provided to compensate for the amount of heat that is insufficient when the product is heated by the first radiator 36a.

  The second storage unit 30b stores a second evaporator 35b as a first heat exchanger for cooling the product stored in the second storage unit 30b, and the second storage unit 30b. A second heat radiator 36b as a first heat exchanger for heating the product, and a second heat exchanger 35b or a refrigerant flowing through the second heat radiator 36b for circulating air for heat exchange. A second blower 37b and a second electric heater 38b for supplementing the amount of heat that is insufficient when the product is heated by the second radiator 36b are provided.

  The third storage unit 30c circulates through a third evaporator 35c as a first heat exchanger for cooling the product stored in the third storage unit 30c, and the third evaporator 35c. A third blower 37c is provided for circulating air that exchanges heat with the refrigerant. That is, the first storage unit 30a and the second storage unit 30b can switch between cooling and heating of the stored product, and the third storage unit 30c only cools the product. It has become.

  The machine room 40 is provided with an intake port and an exhaust port so that external air flows through the inside. In the machine room 40, a compressor 41 for compressing the refrigerant, a third radiator 42 as a second heat exchanger for releasing waste heat to the air flowing through the machine room 40, A machine room blower 43 for circulating external air in the machine room 40 is provided. In the machine room 40, the compressor is provided below the first storage portion 30a, and the upper surface side is surrounded by the heat insulating material 31, and the front surface side, the back surface side, the bottom surface side, and the left and right side surfaces are surrounded by the heat insulating material 40a. The unit 44 is provided, and the compressor 41 is stored in the compressor storage unit 44.

  The compressor 41 is composed of a two-stage compressor having a low-stage compression section 41a as a first compression section and a high-stage compression section 41b as a second compression section, and sucks refrigerant into the low-stage compression section. The refrigerant compressed in 41a and compressed in the lower stage compression section 41a is further compressed and discharged in the higher stage compression section 41b. Since the two-stage compressor compresses the refrigerant in two stages, it can cope with a high operating pressure and a high differential pressure, and is applied to a refrigerant circuit in which the high pressure side using carbon dioxide or the like as the refrigerant is a high pressure. The In the compressor 41, the discharge side of the low-stage compression unit 41a and the suction side of the high-stage compression unit 41b are connected by a communication pipe 41c, and the communication pipe 41c cools the refrigerant flowing through the communication pipe 41c. The fourth radiator 41d is provided. The compressor housing portion 44 is provided with a compressor blower 41e for circulating air that exchanges heat with the refrigerant in the fourth radiator 41d.

  An air inlet 44a is provided on the front surface of the compressor housing portion 44 to allow a part of the external air that has flowed into the machine chamber 40 through the air intake port to flow into the compressor housing portion 44. An air outlet 44 b for allowing the air in the compressor housing 44 to flow into the machine chamber 40 is provided on the side surface of the portion 44. Further, air supply ports 44c are provided on the upper surface of the compressor storage unit 44 so as to communicate with the first storage unit 30a, respectively, and supply air from the compressor storage unit 44 to the first storage unit 30a. And an air inlet 44d for sucking the air in the first storage portion 30a into the compressor storage portion 44. The air inlet 44a, the air outlet 44b, the air supply port 44c, and the air suction port 44d are each opened and closed by a shutter 45 as an opening / closing member. In the shutter 45, a plurality of shutter plates 45a formed in a rectangular shape are respectively rotatably supported by the openings of the air inlet 44a, the air outlet 44b, the air supply port 44c, and the air suction port 44d with the longitudinal direction as an axis. It is constituted by. The shutter plates 45a are connected to each other by a link mechanism (not shown), and the shutter 45 is opened and closed by driving the link mechanism by a solenoid or motor (not shown) that is driven based on a signal from the control unit. . Each shutter plate 45a is provided by affixing a heat insulating material 45b such as urethane foam to a metal or resin plate-like member. The air inlet 44a, the air outlet 44b, the air supply port 44c, or the air suction port 44d. When the opening is closed, the movement of heat through the shutter plate 45a is prevented.

  Further, a refrigerant circuit 50 as shown in FIG. 6 is configured in the product storage unit 30 and the machine room 40, and carbon dioxide is used as the refrigerant. The refrigerant circuit 50 includes a first evaporator 35a, a second evaporator 35b, a third evaporator 35c, a first radiator 36a, a second radiator 36b, a compressor 41, and a third radiator 42. , An internal heat exchanger 51 composed of a double pipe or the like for exchanging heat between the refrigerant flowing out of the third radiator 42 and the refrigerant sucked into the compressor 41, an expansion valve or capillary tube for decompressing the refrigerant First to third expansion means 52a, 52b, 52c, etc., and first to sixth electromagnetic valves 53a, 53b, 53c, 53d, 53e, 53f for opening and closing the refrigerant flow path, and copper They are connected by pipes and stainless steel pipes.

  The refrigerant discharge side of the compressor 41 is connected in parallel to the refrigerant inflow side of the first radiator 36a and the second radiator 36b, and the refrigerant inflow side of the first radiator 36a and the second radiator 36b. Are provided with a first electromagnetic valve 53a and a second electromagnetic valve 53b, respectively. The refrigerant outflow sides of the first radiator 36a and the second radiator 36b are connected to the refrigerant inflow side of the third radiator 42, and the flow path on the refrigerant inflow side of the third radiator 42 is compressed. The refrigerant discharge side of the machine 41 is connected via a third electromagnetic valve 53c. The refrigerant outflow side of the third radiator 43 is connected to the high-pressure refrigerant inflow side of the internal heat exchanger 51, and the high-pressure refrigerant outflow side of the internal heat exchanger 51 is parallel to the first evaporator 35a and the second evaporator 35a. Are connected to the evaporator 35b and the third evaporator 35c. The first expansion means 52a, the second expansion means 52b, and the third expansion means are provided in the flow paths on the refrigerant inflow side of the first evaporator 35a, the second evaporator 35b, and the third evaporator 35c, respectively. 52c is provided, and a fourth solenoid valve 53d, a fifth solenoid valve 53e, and a second solenoid valve are provided in the flow paths upstream of the first expansion means 52a, the second expansion means 52b, and the third expansion means 52c, respectively. Six electromagnetic valves 53f are provided. The refrigerant outflow sides of the first evaporator 35a, the second evaporator 35b, and the third evaporator 35c are connected to the low-pressure refrigerant inflow side of the internal heat exchanger 51, and the low-pressure refrigerant outflow side of the internal heat exchanger 51 Is connected to the refrigerant suction side of the compressor 41.

  The vending machine also includes a control unit 60, a signal detection unit 61, and a drive unit 62 for adjusting the cooling or heating temperature of the first storage unit 30a, the second storage unit 30b, and the third storage unit 30c. It has.

  The control unit 60 is constituted by a microcomputer, and a program related to operation control of the compressor 41, the machine room blower 43, the first electric heater 38a, and the second electric heater 38b is stored in the memory.

  The signal detection unit 61 includes a first temperature sensor 61a such as a thermistor for detecting the temperatures of the first storage unit 30a, the second storage unit 30b, and the third storage unit 30c, and a second temperature. The sensor 61b and the third temperature sensor 61c are connected to the fourth temperature sensor 61d for detecting the temperature of the refrigerant on the refrigerant outflow side of the third evaporator 35c, and the first temperature sensor 61a and the second temperature sensor 61c are connected. Signals from the temperature sensor 61b, the third temperature sensor 61c, and the fourth temperature sensor 61d are transmitted to the control unit 60 via the signal detection unit 61.

  The drive unit 62 is connected to the compressor 41, the machine room blower 43, the first electric heater 38 a, and the second electric heater 38 b, and the drive unit 62 is connected to the compressor 41 based on a signal from the control unit 60. Drive signals are transmitted to the machine room blower 43, the first electric heater 38a, and the second electric heater 38b.

  In the vending machine configured as described above, a case where cooling is performed in all of the first storage unit 30a, the second storage unit 30b, and the third storage unit 30c will be described with reference to FIG. The first solenoid valve 53a and the second solenoid valve 53b are closed, the third solenoid valve 53c, the fourth solenoid valve 53d, the fifth solenoid valve 53e and the sixth solenoid valve 53f are opened, and the air flow The inlet 44a and the air outlet 44b are opened, the air supply port 44c and the air inlet 44d are closed, and the first blower 37a, the second blower 37b, the third blower 37c, the compressor 41, and the blower for the compressor. 41e and the machine room blower 43 are operated.

  The refrigerant discharged from the compressor 41 sequentially flows through the third electromagnetic valve 53c, the third radiator 42, and the high-pressure side of the internal heat exchanger 51, and is branched to form the fourth electromagnetic valve 53d and the fifth It flows into the flow path provided with the solenoid valve 53e and the sixth solenoid valve 53f. The refrigerant flowing through the flow path provided with the fourth electromagnetic valve 53d flows through the first expansion means 52a and the first evaporator 35a and flows into the low pressure side of the internal heat exchanger 51, and the fifth The refrigerant flowing through the flow path provided with the electromagnetic valve 53e flows through the second expansion means 52b and the second evaporator 35b and flows into the low pressure side of the internal heat exchanger 51, and the sixth electromagnetic valve 53f. The refrigerant flowing through the flow path provided with the refrigerant flows through the third expansion means 52 c and the third evaporator 35 c and flows into the low pressure side of the internal heat exchanger 51, and from the low pressure side of the internal heat exchanger 51. The refrigerant that has flowed out is sucked into the compressor 41.

  At this time, outside air flows into the compressor housing portion 44 from the air inlet 44a by the compressor blower 43, and is discharged into the machine chamber 40 through the air outlet 44b. Thereby, the refrigerant discharged from the low-stage compression unit 41a of the compressor 41 is cooled by exchanging heat with the air flowing in from the outside in the fourth radiator 41d.

  Next, a case where heating is performed in the first storage unit 30a and cooling is performed in the second storage unit 30b and the third storage unit 30c will be described with reference to FIG. The second solenoid valve 53b, the third solenoid valve 53c, and the fourth solenoid valve 53d are closed, the first solenoid valve 53a, the fifth solenoid valve 53e, and the sixth solenoid valve 53f are opened, and the air flow The inlet 44a and the air outlet 44b are closed, the air supply port 44c and the air inlet 44d are opened, the first blower 37a, the second blower 37b, the third blower 37c, the compressor 41, and the blower for the compressor. 41e and the machine room blower 43 are operated.

  The refrigerant discharged from the compressor 41 circulates through the first electromagnetic valve 53a, the first radiator 36a, the third radiator 42, and the high-pressure side of the internal heat exchanger 51, and is branched to form a fifth electromagnetic valve. It flows into the flow path provided with the valve 53e and the sixth electromagnetic valve 53f. The refrigerant flowing through the flow path provided with the fifth electromagnetic valve 53e flows through the second expansion means 52b and the second evaporator 35b and flows into the low pressure side of the internal heat exchanger 51, and the sixth The refrigerant flowing through the flow path provided with the electromagnetic valve 53f flows through the third expansion means 52c and the third evaporator 35c, flows into the low pressure side of the internal heat exchanger 51, and flows into the internal heat exchanger 51. The refrigerant flowing out from the low pressure side is sucked into the compressor 41.

  At this time, in the first storage portion 30a, the temperature difference between the temperature of the refrigerant flowing through the first radiator 36a and the temperature of the air exchanging heat with the refrigerant flowing through the first radiator 36a is small. The first heat radiator 36a cannot dissipate heat equivalent to the heat absorption necessary for the second evaporator 35b and the third evaporator 35c. However, since the refrigerant flowing through the first radiator 36a also dissipates heat in the third radiator 42, the shortage of the amount of heat released from the refrigerant is solved, and the second evaporator 35b and the third evaporator 35c are sufficient. It is possible to prevent the cooling capacity from being insufficient.

  In addition, since the air inlet 44 a and the air outlet 44 b are closed and the air supply port 44 c and the air suction port 44 d are opened in the compressor housing portion 44, external air flows in from the compressor 41. The released heat is not discharged, and the heat released from the compressor 41 is supplied to the first storage unit 30a. Thereby, the heat released from the compressor 41 can be used for heating in the first storage unit 30a.

  The operation of the control unit 60 relating to the operation control of the compressor 41 and the first electric heater 38a at this time will be described with reference to the flowcharts of FIGS.

  When the detected temperature T3 of the third temperature sensor 61c is equal to or lower than the predetermined set temperature T3L (step S11), the operation of the compressor 41 is stopped (step S12), and the detected temperature T3 of the third temperature sensor 61c is predetermined. When the temperature becomes higher than the set temperature T3H (T3L ≦ T3H) (step S13), the compressor 41 is operated (step S14).

  Further, when the detected temperature T1 of the first temperature sensor 61a becomes equal to or lower than a predetermined set temperature T1L (step S21), the first electric heater 38a is energized (step S22), and the detected temperature T1 of the first temperature sensor 61a is detected. Becomes higher than a predetermined set temperature T1H (T1L ≦ T1H) (step S23), the energization of the first electric heater 38a is stopped (step S24).

  Thereby, the operation of the compressor 41 is controlled based on the temperatures of the second storage 30b and the third storage 30c to be cooled. Moreover, in the 1st storage 30a to heat, when the calorie | heat amount for heating goods is insufficient, it supplements with the calorie | heat amount of the 1st electric heater 38a.

  As shown in the flowchart of FIG. 12, when the detected temperature T4 of the fourth temperature sensor 61d is equal to or lower than a predetermined set temperature T4L (step S31), the operation of the machine room blower 43 is stopped (step S32). When the detected temperature T4 of the fourth temperature sensor 61d becomes higher than a predetermined set temperature T4H (T4L ≦ T4H) (step S33), the machine room blower 43 is operated (step S34).

This makes it possible to maintain a predetermined cooling capacity in the third evaporator 35c and to reduce the power consumption related to the operation of the machine room blower 43. Also, the first storage unit 30a and the second storage unit 30a When heating is performed in the storage unit 30b and cooling is performed in the third storage unit 30c, the third electromagnetic valve 53c, the fourth electromagnetic valve 53d, and the fifth electromagnetic valve 53e are provided as shown in FIG. The first solenoid valve 53a, the second solenoid valve 53b, and the sixth solenoid valve 53f are opened, the air inlet 44a and the air outlet 44b are closed, and the air supply port 44c and the air suction port 44d are opened. The first blower 37a, the second blower 37b, the third blower 37c, the compressor 41, the compressor blower 41e, and the machine room blower 43 are operated.

  As described above, according to the vending machine of the present embodiment, the refrigerant radiated in the first radiator 36a provided in the first storage unit 30a to be heated is caused to flow into the third radiator 42, The refrigerant radiated by the third radiator 42 is caused to flow into the second evaporator 35b and the third evaporator 35c provided in the second storage portion 30b and the third storage portion 30c for cooling, respectively. As a result, the refrigerant discharged from the compressor 41 in the first radiator 36a and the third radiator 42 provided in the first storage portion 30a for heating can be reliably radiated and cooled. It is possible to solve the shortage of cooling capacity in the second evaporator 35b and the third evaporator 35c provided in the second storage unit 30b and the third storage unit 30c, respectively.

  Further, the refrigerant discharged from the compressor 41 flows out from the first radiator 36a and the second radiator 36b, and flows out from the first radiator 36a and the second radiator 36b. The flow path through which the refrigerant flows into the third radiator 42 and the refrigerant discharged from the compressor 41 flows into the third radiator 42 without flowing into the first radiator 36a and the second radiator 36b. And a first electromagnetic valve 53a, a second electromagnetic valve 53b, and a third electromagnetic valve 53c that open and close each flow path, and the first electromagnetic valve 53a and the second electromagnetic valve 53b. Since the refrigerant flowing out from the first radiator 36a and the second radiator 36b is caused to flow into the third radiator 42 by opening and closing the third electromagnetic valve 53c, the first configuration is simplified. 1 radiator 36a and 2nd radiator 36b The outflow refrigerant can be made to flow into the third radiator 42, it is possible to reduce the manufacturing cost.

  Further, the compressor 41 is disposed in a compressor storage portion 44 provided so as to be surrounded by the heat insulating materials 31 and 40a, and an air inlet 44a for allowing external air to flow into the compressor storage portion 44, An air outlet 44b through which air in the compressor storage section 44 flows out, an air supply port 44c for supplying the air in the compressor storage section 44 to the first storage section 30a, and the first storage section 30a An air inlet 44d for sucking air into the compressor housing 44 is provided, and a shutter 45 that opens and closes the air inlet 44a, the air outlet 44b, the air supply port 44c, and the air inlet 44d, and the compressor housing 44, since the compressor blower 41e for circulating air is provided, when all of the first storage unit 30a, the second storage unit 30b, and the third storage unit 30c are cooled, the air inlet 44a and sky By opening the outlet 44b and closing the air supply port 44c and the air suction port 44d, the air heated by the heat released from the compressor 41 can be discharged to the outside as waste heat, and at least the first When the one storage portion 30a is heated and the others are cooled, the air inlet 44a and the air outlet 44b are closed, and the air supply port 44c and the air suction port 44d are opened. Air heated by the released heat can be supplied to the first storage unit 30a as a heat source for heating, and energy efficiency can be improved.

  Further, since the heat insulating material 45b is attached to the shutter plate 45a of the shutter 45, it is possible to prevent heat from moving through the shutter plate 45a, and to improve the heat insulating performance of the compressor housing portion 44. Become.

  The compressor 41 is composed of a two-stage compressor having a low-stage compression section 41a and a high-stage compression section 41b, and is discharged from the low-stage compression section 41a and sucked into the high-stage compression section 41b. The fourth radiator 41d that cools the refrigerant that circulates through the communication pipe 41c through which the refrigerant circulates can be provided, so that the temperature of the refrigerant discharged from the compressor 41 can be lowered and the compression work can be reduced. This makes it possible to improve energy efficiency.

  In addition, the temperature of the refrigerant flowing out from the machine room blower 43 for circulating the air that exchanges heat with the refrigerant in the third radiator 42 and the third evaporator 35c provided in the third storage portion 30c is set. Since the fourth temperature sensor 61d for detection is provided and the operation of the machine room blower 43 is controlled based on the detected temperature T4 of the fourth temperature sensor 61d, the third evaporator 35c has a predetermined value. It is possible to perform the minimum operation of the machine room blower 43 while maintaining the cooling capacity, and it is possible to reduce the power consumption related to the machine room blower 43.

  Further, the first storage unit 30a and the second storage unit 30b include a first radiator 36a and a second radiator 36b dedicated to heat dissipation, and a first evaporator 35a and a second evaporator dedicated to heat absorption. Since 35b is provided, the number of solenoid valves used can be reduced as compared with the case of using a common heat exchanger that performs heat dissipation and heat absorption, and the manufacturing cost can be reduced.

  FIG. 14 shows another embodiment of the present invention, and is a schematic configuration diagram of a vending machine showing a case where the first storage unit and the second storage unit are heated and the third storage unit is cooled. is there. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

  In this vending machine, the air supply port 44c and the air suction port 44d shown in the above embodiment are not provided in the compressor housing 44.

  In the vending machine configured as described above, a case where heating is performed in the first storage unit 30a and the second storage unit 30b and cooling is performed in the third storage unit 30c will be described with reference to FIG. The third solenoid valve 53c, the fourth solenoid valve 53d, and the fifth solenoid valve 53e are closed, the first solenoid valve 53a, the second solenoid valve 53b, and the sixth solenoid valve 53f are opened, and the air flow The inlet 44a and the air outlet 44b are closed, the first blower 37a, the second blower 37b, the third blower 37c, the compressor 41, and the machine room blower 43 are operated, and the compressor blower 41e is operated. To stop.

  A part of the refrigerant discharged from the compressor 41 circulates through the first electromagnetic valve 53a and the first radiator 36a, and the other circulates through the second electromagnetic valve 53b and the second radiator 36b. To do. The refrigerant that flows out and merges from the first radiator 36a and the second radiator 36b flows through the third radiator 42 and the high-pressure side of the internal heat exchanger 51, and is provided with a sixth electromagnetic valve 53f. Flow into the flow path. The refrigerant flowing through the flow path provided with the sixth electromagnetic valve 53f flows through the third expansion means 52c and the third evaporator 35c, flows into the low pressure side of the internal heat exchanger 51, and performs internal heat exchange. The refrigerant flowing out from the low pressure side of the vessel 51 is sucked into the compressor 41.

  Thereby, since the refrigerant | coolant which distribute | circulated the 1st heat radiator 36a and the 2nd heat radiator 36b also radiates heat also in the 3rd heat radiator 42, the shortage of the heat radiation amount of a refrigerant | coolant is eliminated, and in the 3rd evaporator 35c It is possible to absorb heat sufficiently and to prevent a lack of cooling capacity.

  Further, since the compressor inlet 44a is closed at the air inlet 44a and the air outlet 44b and the operation of the compressor blower 41e is stopped, the heat radiation from the compressor 41 is suppressed, and the first Heat is released from the radiator 36a and the second radiator 36b. Thereby, it becomes possible to improve the heating capability in the 1st radiator 36a of the 1st accommodating part 30a, and the 2nd radiator 36a of the 2nd accommodating part 30b.

  As described above, according to the vending machine of the present embodiment, the compressor 41 is disposed in the compressor storage unit 44 provided so as to be surrounded by the heat insulating materials 31 and 40a, and the compressor storage unit 44 is connected to the outside. Provided with an air inlet 44a for allowing the air to flow in and an air outlet 44b for allowing the air in the compressor housing 44 to flow out, a shutter 45 for opening and closing the air inlet 44a and the air outlet 44b, respectively, and compression Since the compressor blower 41e for circulating air in the machine storage unit 44 is provided, when all of the first storage unit, the second storage unit, and the third storage unit are cooled, the air inlet port By opening the air outlet 44a and the air outlet 44b, the air heated by the heat released from the compressor 41 can be discharged to the outside as waste heat, and the first storage portion 30a and the second storage portion 30b When one or both are heated and the others are cooled, the air inlet 44a and the air outlet 44b are closed to suppress the release of heat from the compressor 41, and the first radiator 36a and Heat can be released from one or both of the second radiators 36b, and energy efficiency can be improved.

1 is an overall perspective view of a vending machine showing an embodiment of the present invention. Front sectional view of vending machine Side view of vending machine The perspective view of the shutter which shows the state which closed the opening part The perspective view of the shutter which shows the state which opened the opening part Schematic configuration diagram of vending machine showing refrigerant circuit Block diagram showing the control system Schematic configuration diagram of a vending machine showing a case where the first storage unit, the second storage unit, and the third storage unit are all cooled. Schematic configuration diagram of a vending machine showing a case where the first storage unit is heated and the second storage unit and the third storage unit are cooled. Flow chart for compressor operation Flow chart for operation of electric heater Flow chart regarding operation of blower for machine room Schematic configuration diagram of a vending machine showing a case where the first storage unit and the second storage unit are heated and the third storage unit is cooled. The schematic block diagram of the vending machine which shows other embodiment of this invention.

Explanation of symbols

  30 ... Product storage unit, 30a ... First storage unit, 30b ... Second storage unit, 30c ... Third storage unit, 35a ... First evaporator, 35b ... Second evaporator, 35c ... Third Evaporator 36a ... first radiator 36b ... second radiator 40 ... machine room 41 ... compressor 41a ... low-stage compression section 41b ... high-stage compression section 41c ... communication pipe 41d ... 4th radiator, 41e ... compressor blower, 42 ... 3rd radiator, 43 ... machine room blower, 44 ... compressor housing part, 44a ... air inlet, 44b ... air outlet, 44c ... Air supply port, 44d ... Air suction port, 45 ... Shutter, 45a ... Shutter plate, 45b ... Heat insulation, 50 ... Refrigerant circuit, 53a ... First solenoid valve, 53b ... Second solenoid valve, 53c ... First 3 solenoid valve, 53d ... 4th solenoid valve, 53e ... 5th solenoid valve, 53f ... 6th solenoid valve Solenoid valves, 60 ... controller, 61 ... signal detection unit, 61d ... fourth temperature sensor, 62 ... drive unit.

Claims (9)

A plurality of storage units for storing articles, a first heat exchanger provided in each storage unit, a second heat exchanger provided outside the storage unit, and a refrigerant circuit having a compressor, In the cooling and heating device configured to cool or heat the articles stored in the storage units by exchanging heat between the refrigerant and the air in the storage units in one heat exchanger,
Among the plurality of storage units, the refrigerant radiated in the first heat exchanger provided in the storage unit for heating the article is caused to flow into the second heat exchanger, and the refrigerant radiated in the second heat exchanger is A cooling and heating apparatus comprising: a refrigerant circulation means for flowing into a first heat exchanger provided in a storage unit for cooling the article. The refrigerant circulation means includes a first refrigerant flow path for allowing the refrigerant discharged from the compressor to flow into a first heat exchanger provided in each storage section for heating the article, and each storage section for heating the article. A second refrigerant flow path for flowing the refrigerant flowing out from the first heat exchanger provided in the second heat exchanger and the refrigerant discharged from the compressor through the first refrigerant flow path And a third refrigerant flow path for flowing into the second heat exchanger, and flow path opening / closing means for opening and closing each of the first refrigerant flow path and the third refrigerant flow path. Item 2. The cooling heating apparatus according to Item 1. A first heat exchange comprising: a storage section for storing articles; a first heat exchanger provided in the storage section; a second heat exchanger provided outside the storage section; and a refrigerant circuit having a compressor. In the cooling and heating apparatus configured to cool or heat the article stored in the storage unit by exchanging heat between the refrigerant and the air in the storage unit in the container,
A compressor storage section that is provided so as to be surrounded by a heat insulating material, and stores the compressor;
A compressor blower for circulating air in the compressor housing;
An air inlet that allows external air to flow into the compressor housing;
An air outlet through which the air in the compressor housing flows out;
An air supply port for supplying air from the compressor housing to the housing;
An air inlet for sucking air in the storage section into the compressor storage section;
A cooling and heating device comprising: an air inlet, an air outlet, an air supply port, and an opening / closing member capable of opening and closing each of the air suction ports. A first heat exchange comprising: a storage section for storing articles; a first heat exchanger provided in the storage section; a second heat exchanger provided outside the storage section; and a refrigerant circuit having a compressor. In the cooling and heating apparatus configured to cool or heat the article stored in the storage unit by exchanging heat between the refrigerant and the air in the storage unit in the container,
A compressor storage section that is provided so as to be surrounded by a heat insulating material, and stores the compressor;
A compressor blower for circulating air to be exchanged with the compressor in the compressor housing;
An air inlet through which external air flows into the compressor housing,
An air outlet through which the air in the compressor housing flows out;
A cooling and heating apparatus comprising: an opening / closing member capable of opening and closing each of an air inlet and an air outlet. The cooling and heating device according to claim 3 or 4, wherein the opening / closing member is subjected to a heat insulation treatment. The compressor is composed of a first compression unit that compresses the sucked refrigerant, and a second compression unit that further compresses the refrigerant compressed in the first compression unit,
The cooling and heating device according to any one of claims 1 to 5, further comprising a radiator that cools the refrigerant that is discharged from the first compression unit and sucked into the second compression unit. A blower for circulating air for heat exchange with the refrigerant in the second heat exchanger;
A temperature detector for detecting the temperature of the refrigerant flowing out of the first heat exchanger provided in the storage section to be cooled;
The cooling and heating apparatus according to any one of claims 1 to 6, further comprising a control unit that controls the operation of the blower based on a temperature detected by the temperature detector. The cooling and heating device according to any one of claims 1 to 7, wherein a first heat exchanger dedicated to heat dissipation and a first heat exchanger dedicated to heat absorption are provided in the storage unit, respectively. . The cooling and heating apparatus according to any one of claims 1 to 8, wherein carbon dioxide is used as the refrigerant.

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