JP2008040731A - Cooling/heating system and vending machine using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent dew condensation on an outdoor heat exchanger of a cooling/heating system even if ambient humidity is high for prolonging an operation time of the cooling/heating system. <P>SOLUTION: In the outdoor exchanger 36 having a cooling-only system 6 and a cooling/heating system 32 used for a vending machine and the like, a condenser of the cooling-only system 6 and an evaporator for heating time of the cooling/heating system 32 are integrated together. When a cooling inlet pipe 42 and a cooling/heating inlet pipe 43 are brought close to each other, temperatures of the cooling/heating inlet pipe 43 and a fin 39 are increased, and consequently, dew condensation can be prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cooling and heating system that suppresses condensation on an outdoor heat exchanger and a vending machine using the same.

  In recent years, vending machines are highly demanded to reduce power consumption from the viewpoint of environmental protection, and in order to reduce power consumption, products that use heat pump systems instead of heaters have been proposed for heating products ( Patent Document 1).

  The conventional cooling and heating system will be described below with reference to the drawings.

  FIG. 4 is a cross-sectional view of a conventional vending machine, and FIG. 5 is a perspective view of an outdoor heat exchanger of the conventional vending machine. As shown in FIGS. 4 and 5, the vending machine main body 1 includes a first storage chamber 2 dedicated to cooling, a second storage chamber 3, a third storage chamber 4 that can be switched between cooling and heating, and a machine chamber 5. The cooling and heating system 6 is housed inside.

  The cooling dedicated system 6 includes a first compressor 7, an outdoor heat exchanger 8 having two piping paths, a first switching valve 9, a second switching valve 10, a first pressure reducing means 11, a second pressure reducing means 12, and a first The first evaporator 13 stored in the storage chamber 2 and the second evaporator 14 stored in the second storage chamber 3 are connected in a ring shape. The cooling and heating system 15 includes a second compressor 16, a four-way valve 17, an outdoor heat exchanger 8, an indoor heat exchanger 18 stored in the third storage chamber 4, a cooling decompression unit 19, and a heating decompression unit. 20, a cooling check valve 21 and a heating check valve 22 are connected in a ring shape.

  The outdoor heat exchanger 8 includes a plurality of fins 23, a cooling pipe 24 through which a refrigerant of the cooling dedicated system 6 flows, and a cooling and heating pipe 25 through which a refrigerant of the cooling and heating system 15 flows. The cooling pipe 24 is a cooling inlet. The piping 26 is provided at the lower part of the outdoor heat exchanger 8, and the cooling and heating pipe 25 is provided with a heating inlet pipe 27 that serves as an inlet pipe at the time of heating of the cooling and heating system 15 at the upper part of the outdoor heat exchanger 8. A cooling inlet pipe 28 serving as an inlet pipe at the time of cooling of the temperature system 15 is provided below the outdoor heat exchanger 8.

  The heating inlet pipe 27 is provided with a dew condensation sensor 29 to detect whether or not the outdoor heat exchanger 18 is dewed.

  In addition, a heater 30 is provided in the third storage chamber, and a heating control means 31 that switches between the operation of the cooling and heating system 15 and the operation of the heater 30 according to the detection result of the dew condensation sensor 29 in the machine room 5. It has.

  The four-way valve 17 causes the refrigerant discharged from the second compressor 16 to flow to the outdoor heat exchanger 8 and the refrigerant discharged from the indoor heat exchanger 18 to the second compressor 16 when the cooling and heating system 15 is heated. The flow path is switched so that the refrigerant discharged from the second compressor 16 flows to the indoor heat exchanger 18 and the refrigerant discharged from the outdoor heat exchanger 8 flows to the second compressor 16 during heating. .

  The operation of the cooling and heating system configured as described above will be described below.

  During cooling of the dedicated cooling system 6, the refrigerant gas compressed by the first compressor 7 is condensed and liquefied by the outdoor heat exchanger 8, and is selectively changed by opening and closing the first switching valve 9 and the second switching valve 10. Flows to the first decompression means 11 or the second decompression means 12 and is decompressed.

  The refrigerant depressurized by the first depressurizing means 11 flows to the first evaporator 13, and the refrigerant depressurized by the second depressurizing means 12 flows to the second evaporator 14, evaporates, cools the surroundings by the heat of vaporization, and again It is sucked into the first compressor 7.

  When the cooling and heating system 15 is cooled, the refrigerant compressed by the second compressor 16 flows to the outdoor heat exchanger 8 through the four-way valve 17, is condensed and liquefied, passes through the cooling check valve 21, and is depressurized by the cooling pressure reducing means 19. Is done.

  The refrigerant decompressed by the cooling decompression means 19 flows to the indoor heat exchanger 18, evaporates, cools the surroundings by the heat of vaporization, and is sucked into the second compressor 16 again through the four-way valve 17.

  On the other hand, when the cooling and warming system 15 is heated, the refrigerant compressed by the second compressor 16 flows to the indoor heat exchanger 18 through the four-way valve 17 to be condensed and liquefied, and warms the surroundings.

  The refrigerant that has exited the indoor heat exchanger 18 is decompressed by the heating decompression means 20, passes through the warming check valve 22, evaporates in the outdoor heat exchanger 8, passes through the four-way valve 17, and again passes through the second compressor 16. It is sucked into.

  Here, when the cooling and heating system 15 is heated, the liquid refrigerant flows through the cooling and heating pipe 26 of the outdoor heat exchanger 8 and evaporates due to a temperature difference from the surroundings, so that the temperature becomes low. Accordingly, when the surroundings are in a high humidity state and the cooling / heating pipe 25 and the fins 23 are below the dew point temperature, dew condensation occurs on the cooling / heating pipes 25 and the fins 23, and the condensed water flows down and flows to the outside of the device. There was a risk of being unsanitary.

  On the other hand, in the conventional vending machine, when the dew condensation sensor 29 detects dew condensation for a certain period of time, the operation of the cooling and heating system 15 is stopped by the heating control means 31, and the heater 30 is used instead of the cooling and heating system 15. By performing the heating operation with, dew condensation water is prevented from flowing out of the equipment.

  Furthermore, since the cooling pipe 24 and the cooling / heating pipe 25 exchange heat with the fins 23 in the outdoor heat exchanger 8 and the temperature of the cooling / heating pipe 25 can be increased, the cooling / heating pipe 25 or the fins 23 The temperature can be increased and condensation can be suppressed.

  Usually, the heat pump system such as the conventional cooling and heating system 15 has an efficiency about twice as high as the heating by the heater 30, and the cooling and heating system 15 is more efficient than the operation by the heater 30. The driving is more efficient when driving.

Therefore, compared with the case where the cooling pipe 24 and the cooling / heating pipe 25 are not exchanging heat in the outdoor heat exchanger 8, even when the ambient humidity is high, the operation time of the cooling / heating system 15 is higher than that of the heater 30. The vending machine can be made long and can be made highly efficient.
JP 2004-245249 A

  However, in the above-described conventional configuration, the cooling inlet pipe 27 having a lower temperature and the cooling inlet pipe having the higher temperature of the cooling pipe 24 of the cooling system 1 in the cooling / heating pipe at the time of heating the cooling / heating system 15. 26 is not close, compared to the case where the heating inlet pipe 27 and the cooling inlet pipe 26 are close to each other, the temperatures of the heating inlet pipe 27 and the fins 23 are lowered, and condensation is likely to occur. The operation time of the high-efficiency cooling and heating system 15 is shortened, and when the surroundings are in a high humidity state, there is a risk that the operation will be less efficient than when the heating inlet pipe 27 and the cooling inlet pipe 26 are close to each other. there were.

  The present invention solves the above-described conventional problems, and effectively suppresses condensation on the outdoor heat exchanger 8 even when the surroundings are in a high humidity state, and the operation time of the cooling and heating system 15 is more efficient than a heater. The purpose of this is to provide a cooling and heating system with high efficiency and high efficiency.

  Further, when the cooling and heating system 15 is cooled, the cooling inlet pipe 28 is positioned below the outdoor heat exchanger 8 and the refrigerant flows through the cooling and heating pipe 25 from the bottom to the top. There was a risk that the lubricating oil in the outdoor heat exchanger 8 would accumulate in the lower part of the outdoor heat exchanger 8 and the lubricating oil inside the second compressor 16 would decrease, reducing reliability.

  Another object of the present invention is to prevent a decrease in lubricating oil inside the compressor and to provide a reliable cooling and heating system.

  In order to solve the above-described conventional problems, a cooling and heating system according to the present invention is independent of a cooling system in which a compressor, a condenser, a decompression unit, and an evaporator are connected in an annular shape, and the cooling system. A cooling / warming compressor, a cooling / warming switching valve, an outdoor heat exchanger, a cooling / warming decompression means, and a cooling / warming system that connects the indoor heat exchanger in an annular shape. And comprising an integrated heat exchanger in which the condenser and the outdoor heat exchanger are integrated, and an inlet pipe of the condenser and an inlet pipe of the outdoor heat exchanger during heating by the cooling and heating system Are close to each other.

  As a result, the inlet pipe of the high temperature cooling system condenser can be brought close to the evaporator inlet pipe when the cooling and heating system is heated, so that the evaporator inlet pipe temperature can be increased. As compared with the case where the evaporator inlet pipe is only subjected to heat exchange when the cooling and heating system is heated, the condensation of the cooling and heating system can be further suppressed.

  Further, the cooling and heating system of the present invention includes a compressor, a condenser, a decompression means, a cooling system that connects an evaporator in an annular shape, and a cooling and heating compressor that is independent of the cooling system. A cooling or heating switching valve, an outdoor heat exchanger, a cooling or warming pressure reducing means, and a cooling and heating system that connects the indoor heat exchanger in a ring shape, the outdoor heat exchanger Is composed of fins and piping, and the fins of the outdoor heat exchanger are composed of a hydrophilic material.

  Thereby, even if condensation occurs in the evaporator when the cooling and heating system is heated, it is difficult to hang down and it is possible to prevent the condensed water from flowing out of the device.

  In the cooling and heating system of the present invention, the outdoor heat exchanger is a pipe connection in which the refrigerant flows in from the upper part and flows out to the lower part when the cooling and heating system is cooled or heated.

  As a result, the flow of the outdoor heat exchanger can be all from the top to the bottom, and the lubricating oil does not accumulate in the lower part of the outdoor heat exchanger, so that the reduction of the lubricating oil in the compressor can be prevented.

  In the cooling and heating system of the present invention, the indoor heat exchanger is a pipe connection in which the refrigerant flows in from the upper part and flows out to the lower part when the cooling and heating system is cooled or heated.

  As a result, the lubricating oil does not accumulate in the lower part of the indoor heat exchanger, and the reduction of the lubricating oil in the compressor can be prevented.

  The vending machine of the present invention uses the cooling and heating system according to any one of claims 1 to 5.

  Accordingly, the operating time of the cooling and heating system can be further increased while preventing the condensed water from flowing out of the device in a vending machine that may be installed indoors and cannot perform drain water treatment.

  The cooling and heating system of the present invention and the vending machine using the same can suppress condensation on the outdoor heat exchanger and increase the efficiency.

  In addition, the cooling and heating system of the present invention and the vending machine using the same can prevent a decrease in the lubricating oil in the compressor and can increase the reliability.

  The invention according to claim 1 is a cooling system in which a compressor, a condenser, a decompression unit, and an evaporator are connected in an annular shape, a cooling and heating compressor independent of the cooling system, A cooling or warming switching valve, an outdoor heat exchanger, a cooling or warming decompression means, and a cooling and heating system that annularly connects the indoor heat exchanger, the condenser and the outdoor heat Consists of an integrated heat exchanger that integrates the exchanger, and by bringing the inlet pipe of the condenser close to the inlet pipe of the outdoor heat exchanger during heating by the cooling and heating system, the temperature is high. Since the inlet pipe of the cooling system condenser and the evaporator inlet pipe at the time of heating the cooling system can be brought close to each other to increase the evaporator inlet pipe temperature, the condenser outlet pipe of the cooling system and the cooling heating system Heat exchange was performed on the evaporator inlet pipe when warm Compared to when the condensation of the cooling and heating systems and more can be suppressed, by increasing the operating time of the cooling and heating systems, it can have high efficiency cooling and heating system.

  The invention described in claim 2 is a cooling system in which a compressor, a condenser, a decompression unit, and an evaporator are connected in a ring, and a cooling and heating compressor independent of the cooling system, A cooling or warming switching valve, an outdoor heat exchanger, a cooling or warming decompression means, and a cooling and heating system that connects the indoor heat exchanger in a ring shape, and the outdoor heat exchanger is finned And the piping of the outdoor heat exchanger is made of a hydrophilic material, so that even if condensation occurs in the evaporator when the cooling and heating system is heated, it is difficult to hang down, and the condensed water Can be prevented from flowing out of the device, and the cooling and heating system can be made more efficient by increasing the operation time of the cooling and heating system.

  The invention according to claim 3 is that the outdoor heat exchanger has a piping connection in which the refrigerant flows from the upper part and flows out to the lower part when the cooling and heating system is cooled and heated. The flow can be all from top to bottom, the lubricant does not accumulate in the lower part of the outdoor heat exchanger, can prevent the lubricant in the compressor from decreasing, and make a reliable cooling and heating system be able to.

  According to a fourth aspect of the present invention, in the indoor heat exchanger, the indoor heat exchanger has a piping connection in which the refrigerant flows in from the upper part and flows out to the lower part when the cooling and heating system is cooled and heated. However, the lubricating oil does not accumulate in the lower portion, the reduction of the lubricating oil in the compressor can be prevented, and a more reliable cooling and heating system can be obtained.

  The invention according to claim 5 is a vending machine that may be installed indoors and cannot perform drain water treatment by using the cooling and heating system according to any one of claims 1 to 4. In this case, the operation time of the cooling and heating system can be extended while preventing the dew condensation water from flowing out of the device, and a highly efficient vending machine can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

  In addition, the operation and action of the same configuration as the conventional one is the same, and the description is omitted.

(Embodiment 1)
1 is a cross-sectional view of a vending machine cooling and heating system according to Embodiment 1 of the present invention during cooling. FIG. 2 is a cross-sectional view when the cooling and heating system of the embodiment is heated. FIG. 3 is a perspective view of the outdoor heat exchanger according to the embodiment.

  1 to 3, the cooling and heating system 32 includes a second compressor 16, a high pressure side cooling switching valve 33, a high pressure side heating switching valve 34, an outdoor heat exchanger 35, an indoor heat exchanger 36, cooling Pressure reducing means 19, heating pressure reducing means 20, cooling check valve 21, heating check valve 22, low pressure side cooling switching valve 37, and low pressure side heating switching valve 38 are connected in a ring shape. Has been.

  The outdoor heat exchanger 35 includes a plurality of fins 39 made of a hydrophilic material, for example, a material coated with a hydrophilic paint such as titanium oxide, a cooling pipe 40 through which a refrigerant of the cooling dedicated system 6 flows, and a cooling and heating system. The cooling pipe 40 has a cooling inlet pipe 42 at the upper part, and the cooling / heating pipe 41 has a cooling and heating system 32 when it is cooled and heated. The piping configuration is such that the refrigerant flows from the cooling and heating inlet piping 43 at the top of the warm piping 40.

  The cooling and heating inlet pipe 43 is provided with a dew condensation sensor 29 to detect whether or not the outdoor heat exchanger 35 is dewed.

  The indoor heat exchanger 36 has a piping configuration in which the refrigerant enters from the top and the bottom from the bottom, both when the cooling and heating system 32 is cooled and heated.

  The operation of the cooling and heating system configured as described above will be described below.

  When the cooling and heating system 32 is cooled, the high pressure side cooling switching valve 33 and the low pressure side cooling switching valve 37 are opened, and the high pressure side warming switching valve 34 and the low pressure side or the temperature switching valve 38 are closed. As a result, the refrigerant compressed by the second compressor 16 flows to the outdoor heat exchanger 35, is condensed and liquefied, and is reduced in pressure by the cooling pressure reducing means 19 through the cooling check valve 21.

  The refrigerant decompressed by the cooling decompression means 19 flows to the indoor heat exchanger 36, evaporates, cools the surroundings by the heat of vaporization, and is sucked into the second compressor 16 again.

  On the other hand, when the cooling and heating system 32 is heated, the high pressure side cooling switching valve 33 and the low pressure side cooling switching valve 37 are closed, and the high pressure side heating switching valve 34 and the low pressure side or temperature switching valve 38 are opened. . Thereby, the refrigerant | coolant compressed with the 2nd compressor 16 flows into the indoor heat exchanger 36, is condensed and liquefied, and warms the circumference | surroundings.

  The refrigerant that has exited the indoor heat exchanger 36 is decompressed by the heating decompression means 20, passes through the warming check valve 22, evaporates in the outdoor heat exchanger 35, and is sucked into the second compressor 16 again.

  When the cooling and heating system 32 is heated, the liquid refrigerant flows through the cooling and heating pipe 41 of the outdoor heat exchanger 35 and evaporates due to a temperature difference from the surroundings, so that the temperature becomes low. Therefore, when the surroundings are in a high humidity state and the cooling / heating pipe 41 and the fin 39 are below the dew point temperature, dew condensation occurs on the cooling / heating pipe 41 and the fin 39, and the condensed water flows down and flows outside the device. There was a risk of being unsanitary.

  In particular, in the vending machine, the outdoor heat exchanger 35 serving as an evaporator of the cooling and heating system 32 is installed in the machine room 5 at the lower part of the vending machine body 1, so that the condensed water cannot be treated. The equipment was installed indoors, and the influence when condensed water flowed out of the equipment was significant.

  When the ambient humidity exceeds a certain humidity, condensation occurs in the outdoor heat exchanger 35. At this time, when the dew condensation sensor 29 detects dew condensation for a certain period of time, the operation of the cooling and heating system 32 is stopped by the heating control means 30, and the heating operation is performed by the heater 30 instead of the cooling and heating system 15. Prevents condensed water from flowing out of the equipment.

  In the conventional cooling and heating system, the cooling pipe 24 and the cooling / heating pipe 25 are heat-exchanged by the fins 23 in the outdoor heat exchanger 8 to increase the temperature of the cooling / heating pipe 25 or the fins 23. Condensation was suppressed.

  In contrast, in the vending machine of the present invention, the outdoor heat exchanger 35 includes the cooling inlet pipe 42 having the highest temperature in the cooling pipe 40 and the cooling and heating inlet pipe 43 having the lowest temperature in the cooling and heating pipe 41. It is close and the temperature of the cooling and heating pipe 41 and the fins 39 can be made higher than that of a conventional vending machine.

  Therefore, the time for the heating operation by the cooling and heating system 32 can be made longer, and a highly efficient vending machine can be obtained.

  In the present embodiment, the fin 39 is made of a hydrophilic material. As a result, even if moisture in the surrounding air is condensed on the surface of the fin 39, the contact angle between the water droplet and the fin 39 is reduced, so that the contact area between the water droplet and the fin 39 is increased and it is difficult to flow downward.

  As a result, even if condensation occurs in the heating inlet pipe 43, the condensed water does not flow down for a longer time, and the time from when condensation occurs until the operation is switched to the heater 30 can be made longer. it can.

  Therefore, the time for the heating operation by the cooling and heating system 32 can be made longer, and a more efficient vending machine can be obtained.

  Further, in the present embodiment, the cooling and heating inlet pipe 43 that is the refrigerant inlet pipe of the outdoor heat exchanger 35 is provided in the upper part of the cooling and heating pipe 41, and the refrigerant is moved from below to above in the outdoor heat exchanger 35. Flow, no traps in the system.

  Thereby, even if the lubricating oil of the second compressor 16 flows, it does not accumulate in the lower part of the outdoor heat exchanger 35 and the lubricating oil in the second compressor 16 does not decrease, and the reliability of the second compressor 16 is improved. Can be high.

  In the present embodiment, the flow of the refrigerant in the indoor heat exchanger 36 can be changed from the top to the bottom when the cooling and heating system 32 cools or warms, and the refrigerant is lowered by the indoor heat exchanger 36. There is no trap in the system.

  Thereby, even if the lubricating oil of the second compressor 16 flows, it does not accumulate in the lower part of the indoor heat exchanger 36 and the lubricating oil in the second compressor 16 does not decrease, and the reliability of the second compressor 16 is improved. Can be high.

  In the present embodiment, the refrigerant also flows from the top to the bottom of the cooling pipe 40 that is the pipe of the cooling-only system 6 of the outdoor heat exchanger 35, and does not become a trap in the system.

  Thereby, even if the lubricating oil of the first compressor 7 flows, it does not accumulate in the lower part of the outdoor heat exchanger 35 and the lubricating oil in the first compressor 7 does not decrease, and the reliability of the first compressor 7 is improved. Can be high.

  Therefore, a highly reliable vending machine can be obtained.

  In the present embodiment, the cooling and heating system 32 has been described as a system capable of switching between cooling and cooling. However, the same dew condensation suppressing effect and lubricating oil trapping preventing effect can be obtained in a heating system that does not perform switching only by heating. It is possible to obtain the same trapping effect of lubricating oil even in a cooling system that can be obtained only by cooling and not switched.

  In the present embodiment, the vending machine main body 1 has three storage chambers. However, the same effect can be obtained if there are two or more storage chambers. When there are two storage chambers, the cooling only system is a system with one evaporator and no switching mechanism.

  Further, in the present embodiment, the cooling only system 6 is configured to switch each evaporator by the first switching valve 9 and the second switching valve 10, but the same effect can be achieved by switching the flow path using a three-way valve. Is obtained.

  Further, in the present embodiment, the dew condensation sensor 29 is attached to the cooling and heating inlet pipe 43 as means for detecting dew condensation in the outdoor heat exchanger 35. However, when the sensor is attached to the curved pipe surface, the mounting variation increases. Since there is a risk, the condensation sensor 29 is attached to the end plate of the outdoor heat exchanger 35, or the ambient humidity is detected by the humidity sensor instead of the condensation sensor 29. Condensation can be detected with high accuracy.

  Further, in the present embodiment, the cooling check valve 21 and the heating check valve 22 are used in the cooling and heating system 32 to prevent the refrigerant from flowing back at the time of switching. By using an electronic expansion valve with a function of closing the heating decompression means 20, a cooling and heating system can be configured with a simple configuration.

  As described above, the cooling and heating system and the vending machine using the cooling and heating system according to the present invention have the outdoor heat by bringing the inlet pipe of the condenser of the dedicated cooling system close to the inlet pipe when the cooling and heating system is heated. Since the dew condensation of the exchanger can be suppressed, the present invention can be applied to devices using all the cooling and heating systems having two or more cooling and heating systems.

Sectional drawing when the cooling and heating system of the vending machine according to Embodiment 1 of the present invention cools Sectional view when the cooling and heating system of the embodiment is heated The perspective view of the outdoor heat exchanger of the embodiment Cross section of conventional vending machine A perspective view of an outdoor heat exchanger of a conventional vending machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vending machine main body 6 Cooling exclusive system 7 1st compressor 11 1st pressure reduction means 12 2nd pressure reduction means 13 1st evaporator 14 2nd evaporator 16 2nd compressor 19 Cooling pressure reduction means 20 Heating pressure reduction means DESCRIPTION OF SYMBOLS 21 Check valve 22 for cooling 22 Check valve for heating 32 Cooling and heating system 33 Switching valve for high pressure side cooling 34 Switching valve for high pressure side heating 35 Outdoor heat exchanger 36 Indoor heat exchanger 37 Switching valve for low pressure side cooling 38 Low-pressure side heating switching valve 39 Fin 40 Cooling piping 41 Cooling heating piping 42 Cooling inlet piping 43 Cooling heating inlet piping

Claims (5)

  A cooling system in which a compressor, a condenser, a decompression means, and an evaporator are connected in a ring; a cooling and heating compressor; and a cooling or heating switching valve, independently of the cooling system; An integrated heat that includes an outdoor heat exchanger, a cooling or warming decompression means, and a cooling and heating system that connects the indoor heat exchanger in a ring shape, and that integrates the condenser and the outdoor heat exchanger. A cooling and heating system comprising an exchanger, wherein an inlet pipe of the condenser and an inlet pipe of the outdoor heat exchanger during heating by the cooling and heating system are brought close to each other.   A cooling system in which a compressor, a condenser, a decompression means, and an evaporator are connected in a ring; a cooling and heating compressor; and a cooling or heating switching valve, independently of the cooling system; An outdoor heat exchanger, cooling or warming decompression means, and a cooling and heating system that connects the indoor heat exchanger in a ring shape, the outdoor heat exchanger comprising fins and pipes, and the outdoor heat A cooling and heating system characterized in that the fins of the exchanger are made of a hydrophilic material.   The cooling and heating system according to claim 1 or 2, wherein the outdoor heat exchanger has a pipe connection in which the refrigerant flows from the upper part and flows out to the lower part when the cooling and heating system is cooled or heated.   The cooling and heating system according to any one of claims 1 to 3, wherein the indoor heat exchanger has a pipe connection in which the refrigerant flows in from the upper part and flows out to the lower part when the cooling and heating system is cooled or heated. .   A vending machine using the cooling and heating system according to any one of claims 1 to 4.

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