JP6673148B2 - Condenser unit and refrigeration cycle device - Google Patents

Description

  The present invention relates to a condenser unit and a refrigeration cycle apparatus including the same.

  Conventionally, a subcooled condenser unit used in a refrigeration cycle device is known.

  The condenser unit described in Patent Literature 1 includes a heat exchanger in which a condenser, a receiver, and a subcooler are integrally formed. Specifically, the condenser is arranged in a region on the upper side in the direction of gravity of the heat exchanger, and the subcool unit is arranged in a region below the condenser. In addition, a receiver section is arranged on one side of the condensing section and the subcool section in the width direction. The high-temperature and high-pressure refrigerant flowing into the flow path of the condensing section is condensed by heat exchange with air when flowing from the upper side to the lower side in the flow path, and flows out from the lower side of the condensing section to the receiver section. The receiver separates the refrigerant flowing from the condenser into a gaseous refrigerant and a liquid refrigerant. The liquid-phase refrigerant flowing out of the receiver is supercooled by heat exchange with air when flowing through the subcooler. In this specification, the term “supercooling” means that the enthalpy of a liquid existing at a temperature equal to or lower than the boiling point decreases. The degree of supercooling refers to a temperature difference between the temperature of a liquid at a predetermined pressure and the saturation temperature of the liquid at the predetermined pressure.

JP-A-4-227436 JP-A-58-126215

  However, in the condenser unit described in Patent Literature 1, since the condensing section, the receiver section, and the subcool section are configured in one heat exchanger, both the area of the condensing section and the area of the subcool section are equal. There is a problem that it becomes smaller. Therefore, for example, in a vehicle such as a bus that requires a large cooling performance, when the refrigerant condensing capacity of the condenser unit is reduced due to the reduction in the area of the condensing part and the area of the subcooled part, the refrigeration cycle device using the condenser unit is required. Cooling performance may be reduced.

  If the refrigerant condensing capacity of the condenser unit is low, the refrigerant pressure from the compressor to the expansion valve increases in the refrigeration cycle device using the condenser unit. Therefore, in the refrigeration cycle device, it is necessary to increase the pressure resistance of the components in order to prevent the components from the compressor to the expansion valve from being damaged.

  On the other hand, in the capacitor unit described in Patent Document 2, the subcool portion and the condensing portion are arranged side by side in the flow direction of the airflow. In detail, a condensation part is arranged on the lee side of the subcool part. However, in Patent Literature 2, since the subcool portion and the condensing portion are mounted adjacent to each other, air heated by exchanging heat with the refrigerant flowing in the subcool portion flows to the condensing portion as it is. Therefore, the condensing portion has a small temperature difference between the refrigerant flowing through the flow path of the portion facing the subcool portion and the air heated through the subcool portion, and the heat exchange efficiency at that portion decreases, Refrigerant condensing capacity may be reduced.

  In view of the above, it is an object of the present invention to provide a condenser unit capable of improving the refrigerant condensing capacity, and a refrigeration cycle device using the same.

In order to achieve the above object, an invention according to claim 1 is a condenser unit used in a refrigeration cycle (1),
A blower (60) for generating an air flow;
It has a flow path (21, 22, 23) through which a high-pressure gas-phase refrigerant discharged from a compressor (2) included in a refrigeration cycle flows, and a blower blows a refrigerant flowing from an upstream side to a downstream side in the flow path. A condensing section (20) for cooling and condensing by heat exchange with air;
A receiver section (30) for separating the refrigerant flowing out of the flow path on the downstream side of the condensing section into a gas-phase refrigerant and a liquid-phase refrigerant;
A subcooling section (40) that supercools the liquid-phase refrigerant flowing out of the receiver section by heat exchange with air blown by a blower, and flows out toward an expansion valve (3) provided in the refrigeration cycle;
A sub-cool section is arranged in a region on the windward side of the airflow from the condensing section, and an air mix space (55) where air passing through the sub-cool section and air passing outside the sub-cool section is mixed with the sub-cool section and the condensing section. An arrangement member (70) formed therebetween;
A first side plate (51) provided on one side of the condensing part and the subcool part;
A second side plate (52) provided on the other side of the condensing part and the subcool part ,
The arranging member is provided between the condensing portion and the subcool portion, and is provided with a cross beam portion (71) provided across the first side plate and the second side plate, and extends from the cross beam portion to a side opposite to the condensing portion to fix the subcool portion. An arm (72),
The receiver part is provided on the side opposite to the condensing part of the cross beam part,
The subcool portion is provided on the opposite side of the cross beam portion from the center (31) of the receiver portion.

  According to this, the air warmed by heat exchange with the refrigerant flowing through the subcool portion and the cool air that has passed outside the subcool portion are introduced into the condensing portion in a state of being mixed by the air mix space. Therefore, a temperature difference between the refrigerant flowing in the entire area of the flow path of the condensing section and the air mixed in the air mix space is ensured. Therefore, in this condenser unit, heat exchange with air is performed with high efficiency in the entire region of the flow path of the condenser section, so that the heat exchange efficiency can be improved and the refrigerant condensing ability can be improved. As a result, the refrigeration cycle device using this condenser unit can increase the amount of liquid-phase refrigerant generated and improve the cooling performance.

  Further, in the refrigeration cycle apparatus using this condenser unit, the refrigerant pressure from the compressor to the expansion valve can be reduced by improving the refrigerant condensation capacity of the condenser unit. Therefore, damage or failure of components from the compressor to the expansion valve can be prevented.

The invention according to claim 5 is a refrigeration cycle apparatus,
A compressor (2) for compressing the refrigerant;
A capacitor unit (10) according to claim 1,
An expansion valve (3) for reducing the pressure of the refrigerant flowing out of the subcool unit (40) of the condenser unit;
An evaporator (4) for evaporating the refrigerant by heat exchange between air flowing in the air conditioning case and the refrigerant depressurized by the expansion valve, and flowing the refrigerant toward the compressor.

  According to this, the refrigeration cycle device includes the condenser unit according to claim 1, thereby improving the cooling performance and preventing damage or failure of components from the compressor to the expansion valve.

  In addition, the code | symbol in parenthesis of each said means shows an example of the correspondence with the concrete means described in embodiment mentioned later.

It is a top view of the capacitor unit concerning a 1st embodiment. It is a front view of the II direction of FIG. FIG. 3 is a sectional view taken along line III-III in FIGS. 1 and 2. It is a lineblock diagram of a refrigeration cycle device. FIG. 4 is an explanatory diagram for explaining a flow of a refrigerant in a condenser unit. FIG. 3 is an explanatory diagram for explaining a flow of air in a capacitor unit. FIG. 7 is an explanatory diagram for explaining a flow of air in a capacitor unit in a section taken along line VII-VII of FIG. 6. It is a top view of the capacitor unit concerning a 2nd embodiment. FIG. 9 is a front view in the IX direction of FIG. 8. FIG. 10 is a sectional view taken along line XX of FIGS. 8 and 9.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent are denoted by the same reference numerals and described.

(1st Embodiment)
The first embodiment will be described with reference to the drawings. The condenser unit 10 of the present embodiment is mounted on a vehicle such as a bus, for example, and is used for a refrigeration cycle device 1 that constitutes an air conditioner.

  First, the refrigeration cycle apparatus 1 will be described.

  As shown in FIG. 4, the refrigeration cycle apparatus 1 includes a compressor 2, a condenser unit 10, an expansion valve 3, an evaporator 4, and the like. These components are connected in a ring shape by the pipe 5, and constitute a circulation path of the refrigerant.

  The compressor 2 sucks and compresses a refrigerant from the evaporator 4 side. The compressor 2 is driven by receiving power from a vehicle traveling engine (not shown). Note that an electric motor may be used as a power source of the compressor 2.

  The condenser unit 10 includes a condenser unit 20, a receiver unit 30, a subcool unit 40, and the like.

  The high-temperature and high-pressure gas-phase refrigerant discharged from the compressor 2 flows into the condenser 20. The gas-phase refrigerant that has flowed into the condensing section 20 is cooled by heat exchange with the outside air and condenses when flowing through the flow path of the condensing section 20. The condensing section 20 is also called a radiator that radiates the gas-phase refrigerant to the outside air.

  The refrigerant flowing out of the condenser 20 flows into the receiver 30. The receiver 30 is a container for storing the refrigerant, separates the refrigerant flowing out of the flow path of the condenser 20 into a gaseous refrigerant and a liquid refrigerant, and flows the liquid refrigerant to the subcooler 40.

  The subcool unit 40 supercools the liquid-phase refrigerant flowing out of the receiver unit 30 by heat exchange with the outside air, and flows out toward the expansion valve 3.

  The liquid-phase refrigerant is decompressed when passing through the expansion valve 3, enters a mist gas-liquid two-phase state, and flows into the evaporator 4. The expansion valve 3 is constituted by a fixed throttle such as an orifice or a nozzle, or an appropriate variable throttle.

  The evaporator 4 is installed in a ventilation path formed in an air conditioning case (not shown) provided in an air conditioning unit (not shown). The low-pressure refrigerant flowing through the flow path of the evaporator 4 evaporates by performing heat exchange with air blown by a blower (not shown) provided in the air conditioning case. The air flowing through the ventilation path of the air conditioning case is cooled by the latent heat of evaporation of the refrigerant. The temperature of the air is adjusted by a heater core (not shown) and is blown into the vehicle interior. The refrigerant that has passed through the evaporator 4 flows out toward an accumulator (not shown), and is sucked into the compressor 2 from the accumulator.

  Next, the configuration of the capacitor unit 10 will be described.

  The capacitor unit 10 of the present embodiment is mounted under the floor of a vehicle such as a bus, takes in outside air from an air intake provided on a side surface of the vehicle, and cools and condenses the refrigerant.

  As shown in FIGS. 1 to 3, the condenser unit 10 includes a first side plate 51, a second side plate 52, a bottom plate 53, a blower 60, and an arrangement member in addition to the above-described condensing unit 20, receiver unit 30, and subcool unit 40. 70 and the like. In FIGS. 1 to 3, pipes connecting the condensing section 20, the receiver section 30, and the subcool section 40 are omitted, and the flow of the refrigerant is indicated by broken arrows in FIG. 1. 2 and 3, the position of the lower surface of the floor of the vehicle in a state where the capacitor unit 10 is attached to the vehicle is indicated by a chain line VF.

  The condenser section 20, the receiver section 30, the subcool section 40, the blower 60, the arrangement member 70, and the like are provided inside a space partitioned by the first side plate 51, the second side plate 52, and the bottom plate 53. The first side plate 51 is provided on one side such as the subcool unit 40 and the condensing unit 20. The second side plate 52 is provided on the other side of the subcool unit 40 and the condensing unit 20. The bottom plate 53 is provided below the subcool unit 40 and the condensing unit 20. Each of the first side plate 51, the second side plate 52, and the bottom plate 53 may be a single member, or may be formed of a plurality of members.

  The blower 60 includes an axial fan 61 and an electric motor 62 for rotating the fan 61. The capacitor unit 10 of the present embodiment includes two blowers 60. When the fan 61 is rotated by the drive of the electric motor 62, an airflow is generated in a space partitioned by the first side plate 51, the second side plate 52, the bottom plate 53, and the floor VF of the vehicle, and outside air is introduced.

  The condenser 20 is provided between the first side plate 51 and the second side plate 52. The condenser unit 10 of the present embodiment includes two condenser units 20. The two condensing portions 20 are provided side by side in the thickness direction, and are fixed to the first side plate 51 and the second side plate 52 via bolts or the like via the mounting member 29. The two condensing sections 20 are provided side by side in the flow direction of the airflow generated by the blower 60. The airflow generated by the blower 60 flows in the thickness direction of the two condensing sections 20. The condensing section 20 has a flow path through which a high-pressure gas-phase refrigerant flows, and cools the refrigerant flowing through the flow path from the upstream side to the downstream side by heat exchange with air blown by the blower 60 to condense the refrigerant. It is to let.

  An arrangement member 70 is provided on the windward side of the airflow with respect to the condenser 20. The arrangement member 70 has a cross beam 71 and an arm 72. The cross beam portion 71 is provided between the condensing portion 20 and the subcool portion 40 so as to straddle the first side plate 51 and the second side plate 52. Both ends of the cross beam 71 are fixed to the first side plate 51 and the second side plate 52 by bolts or the like.

  The receiver section 30 is provided at a position on the opposite side of the condensing section 20 in the cross beam section 71. The capacitor unit 10 of the present embodiment includes two receiver units 30. The two receiver sections 30 are fixed to the cross beam section 71 via the mounting member 39. The receiver unit 30 is a container for storing the refrigerant, and separates the refrigerant flowing out of the flow path on the downstream side of the condensing unit 20 into a gas-phase refrigerant and a liquid-phase refrigerant.

  The arm 72 of the arrangement member 70 extends from the cross beam 71 to the side opposite to the condenser 20. The arm portions 72 are provided on both sides of the subcool portion 40 in the width direction, and are fixed to the cross beams 71 by bolts or the like.

  The subcool unit 40 supercools the liquid refrigerant flowing out of the receiver unit 30 by heat exchange with air blown by the blower 60. The refrigerant whose supercooling degree has been increased by the subcool unit 40 flows out toward the expansion valve 3 provided in the refrigeration cycle device 1. The subcool part 40 is provided at a position on the opposite side of the condensing part 20 of the cross beam part 71. More specifically, the subcool portion 40 is fixed to the arm 72 attached to the cross beam 71 by a bolt or the like via the attachment member 49. That is, the arrangement member 70 arranges the subcool part 40 at a position distant from the condensation part 20 in a region on the windward side of the airflow from the condensation part 20. Thereby, an air mix space 55 is formed between the condenser section 20 and the subcool section 40. 1 and 3, the air mix space 55 is indicated by a dashed line 55. The operation of the air mix space 55 will be described later.

  The subcool part 40 and the two receiver parts 30 are provided side by side in the direction in which the cross beam part 71 extends. The subcool part 40 is provided apart from the cross beam part 71 by the arm part 72. More specifically, the subcool part 40 is provided on the opposite side of the center part 31 of the receiver part 30 from the cross beam part 71. Thus, the air mix space 55 can be enlarged by attaching the subcool unit 40 to a position far from the condensing unit 20.

  The width W1 of the subcool part 40 is smaller than the width W2 of the condensing part 20. Therefore, the space through which air flows is formed between the subcool part 40 and the 1st side plate 51, and between the subcool part 40 and the 2nd side plate 52, respectively. The two receiver units 30 are provided in a space between the subcool unit 40 and the first side plate 51.

  Further, the height H1 of the subcool portion 40 is smaller than the height H2 of the condensing portion 20. Therefore, a space through which air flows is formed between the subcool part 40 and the floor lower surface VF of the vehicle, and between the subcool part 40 and the bottom plate 53, respectively.

  Here, the flow of the refrigerant in the condenser section 20, the receiver section 30, and the subcool section 40 constituting the condenser unit 10 will be described.

  As shown in FIG. 5, the condenser 20 is, for example, a parallel flow type. The condensing section 20 includes a first tank 21 provided on one side in the width direction, a second tank 22 provided on the other side in the width direction, a number of tubes 23 communicating the first tank 21 and the second tank 22, and It has fins 24 and the like. Separators 25 and 26 are provided inside the first tank 21 and the second tank 22, respectively. The separator 26 of the second tank 22 is located below the separator 25 of the first tank 21. In addition, the first tank 21, the second tank 22, and the large number of tubes 23 constitute a refrigerant flow path of the condenser 20.

  With this configuration, the high-temperature and high-pressure refrigerant that has flowed from the refrigerant inlet 27 into the space above the separator 25 in the first tank 21 flows from the first tank 21 through the plurality of tubes 23 as indicated by the arrow RF1, and It flows into the space above the separator 26 in the tank 22. The refrigerant flows from the second tank 22 through the plurality of tubes 23 as indicated by the arrow RF2, and flows into the space of the first tank 21 below the separator 25. Further, the refrigerant flows from the first tank 21 through the plurality of tubes 23 as shown by the arrow RF3, flows into the space of the second tank 22 below the separator 26, and flows out from the refrigerant outlet 28.

  As the refrigerant flowing through the flow path of the condenser section 20 flows from the upstream side to the downstream side in the flow path constituted by the plurality of tubes 23 and the like, the refrigerant gradually cools by heat exchange with the air flowing through the gap between the tubes 23. Be condensed. That is, by performing heat exchange between the refrigerant flowing through the flow path of the condensing section 20 and the air, the temperature of the refrigerant flowing through the downstream flow path is lower than the temperature of the refrigerant flowing through the upstream flow path. Become. The upstream flow path in the flow path of the condensing section 20 means a flow path closer to the refrigerant inlet 27 than a half distance from the refrigerant inlet 27 to the refrigerant outlet 28, and a downstream flow path. The term “flow path” means a flow path closer to the refrigerant outlet 28 than a half distance from the refrigerant inlet 27 to the refrigerant outlet 28.

  The refrigerant flowing out of the refrigerant outlet 28 of the condenser section 20 flows into the receiver section 30 from the inflow pipe 32 of the receiver section 30. The receiver unit 30 is a container that stores the refrigerant. In the container, the refrigerant separates into a gaseous refrigerant and a liquid refrigerant. The receiver section 30 causes the liquid-phase refrigerant stored at the bottom of the container to flow out of the outflow pipe 33 to the subcool section 40.

  The subcool section 40 is also of a parallel flow type, for example, and has a first tank 41 provided on one side in the width direction, a second tank 42 provided on the other side in the width direction, and communication between the first tank 41 and the second tank 42. Fins 44 and the like. Note that the first tank 41, the second tank 42, and the large number of tubes 43 constitute a refrigerant passage of the subcool unit 40.

  With this configuration, the liquid-phase refrigerant flowing from the refrigerant inlet 47 into the first tank 41 flows from the first tank 41 through the plurality of tubes 43 and flows into the second tank 42. The refrigerant flows out from a refrigerant outlet 48 of the second tank 42. As the refrigerant flowing in the flow path of the subcool unit 40 flows through the plurality of tubes 43, the degree of supercooling increases due to heat exchange between the tubes 43 and air flowing through the gap between the tubes 43. Note that a separator may be provided in the first tank 41 and the second tank 42 of the subcool unit 40.

  Subsequently, the flow of air in the condenser unit 10 will be described with reference to FIGS.

  When the fan 61 is rotated by the drive of the electric motor 62 of the blower 60, an airflow is generated in a space partitioned by the first side plate 51, the second side plate 52, the bottom plate 53 and the floor VF of the vehicle, and outside air is introduced. You. 6 and 7, the flow of air at that time is indicated by arrows AF1 to AF12.

  As indicated by arrows AF1 and AF2 in FIG. 6, the air that has passed through the subcool unit 40 and has been heated by heat exchange with the refrigerant flowing through the subcool unit 40 flows into the air mix space 55. At this time, since the subcool portion 40 has a ventilation resistance, the density of the air passing through the subcool portion 40 is lower than the density of the air before passing through the subcool portion 40. Therefore, as indicated by arrows AF3 and AF4, the cold air that has passed through the space between the subcool portion 40 and the first side plate 51 and the space between the subcool portion 40 and the second side plate 52 is removed by the subcool portion. It flows into the air mix space 55 between the condenser 40 and the condenser 20.

  Like the arrows AF1 and AF2 in FIG. 6, as indicated by the arrows AF1 and AF2 in FIG. 7, the air that has passed through the subcool unit 40 and has been heated by heat exchange with the refrigerant flowing through the subcool unit 40 is air-mixed. It flows into the space 55. As indicated by arrows AF5 and AF6, the cold air that has passed through the space between the subcool portion 40 and the floor underside VF of the vehicle and the space between the subcool portion 40 and the bottom plate 53 also condenses with the subcool portion 40. It flows into the air mix space 55 between the section 20.

  Thus, in the air mix space 55, the air that has passed through the subcool unit 40 and the air that has passed outside the subcool unit 40 are mixed. That is, the air that has passed through the subcool unit 40 is mixed with the air that has passed outside the subcool unit 40, so that the temperature decreases.

  The air mixed in the air mix space 55 flows into the gap between the tubes 23 forming the flow path of the condenser 20. This ensures a temperature difference between the high-temperature refrigerant flowing in the flow path on the upstream side of the condensing section 20 and the air mixed in the air mixing space 55, and the low-temperature refrigerant flowing in the flow path on the downstream side of the condensing section 20. A temperature difference between the refrigerant and the air mixed in the air mix space 55 is ensured. Therefore, the condensing section 20 condenses the refrigerant in the entire region from the upstream flow path to the downstream flow path, thereby improving the heat exchange efficiency and improving the refrigerant condensing capacity. As a result, the amount of the liquid-phase refrigerant generated in the condensing section 20 increases.

  The condenser unit 10 and the refrigeration cycle device 1 according to the first embodiment described above have the following operational effects.

  (1) In the condenser unit 10 of the first embodiment, the subcool unit 40 and the condensing unit 20 are arranged such that an air mix space 55 is formed between the subcool unit 40 and the condensing unit 20.

  Thus, the air heated through the subcool unit 40 and the cool air that has passed through the outside of the subcool unit 40 are introduced into the condensing unit 20 while being mixed by the air mix space 55. Therefore, a temperature difference between the refrigerant flowing in the entire area of the flow path of the condensing section 20 and the air mixed in the air mix space 55 is ensured. Therefore, in the condenser unit 10, since heat exchange with air is performed with high efficiency in the entire region of the flow path of the condenser section 20, the heat exchange efficiency can be improved, and the refrigerant condensing capacity can be improved. As a result, the refrigeration cycle apparatus 1 using the condenser unit 10 can increase the amount of liquid-phase refrigerant generated and improve the cooling performance.

  Further, in the refrigeration cycle apparatus 1 using the condenser unit 10, the refrigerant pressure from the compressor 2 to the expansion valve 3 can be reduced by improving the refrigerant condensing ability of the condenser unit 10. Therefore, it is possible to prevent the components from the compressor 2 to the expansion valve 3 from being damaged or broken.

  (2) In the first embodiment, the width W1 of the subcool part 40 is smaller than the width W2 of the condensing part 20.

  According to this, it is possible to form a space through which air flows outside the subcool portion 40 in the width direction. Therefore, the cold air that has passed through the space outside the width direction of the subcool portion 40 and the air that has passed through the subcool portion 40 and have been warmed are mixed by the air mix space 55. Therefore, the air mixed in the air mix space 55 can be introduced into the condensing section 20.

  (3) In the first embodiment, the height H1 of the subcool unit 40 is smaller than the height H2 of the condensing unit 20.

  According to this, it is possible to form a space in which air flows outside the subcool unit 40 in the height direction. Therefore, the cold air that has passed through the space outside the subcool unit 40 in the height direction and the air that has passed through the subcool unit 40 and warmed are mixed by the air mix space 55. Therefore, the air mixed in the air mix space 55 can be introduced into the condensing section 20.

  (4) In the first embodiment, the width W1 of the subcool section 40 is smaller than the width W2 of the condenser section 20, and the height H1 of the subcool section 40 is smaller than the height H2 of the condenser section 20.

  According to this, it is possible to form a space in which air flows outward in the width direction and outside in the height direction of the subcool unit 40. Therefore, the cold air that has passed through the space outside the subcool portion 40 in the width direction and the outside in the height direction and the air that has passed through the subcool portion 40 and warmed are mixed by the air mix space 55. Therefore, the air mixed in the air mix space 55 can be introduced into the condensing section 20.

  (5) In the first embodiment, the arranging member 70 has the cross beam 71 provided between the condensing part 20 and the subcool part 40 so as to straddle the first side plate 51 and the second side plate 52.

  According to this, by arranging the cross beam part 71 between the condensing part 20 and the subcool part 40, it is possible to attach the subcool part 40 and the condensing part 20 apart from each other in the airflow direction. Therefore, the arrangement member 70 can form the air mix space 55 between the condenser section 20 and the subcool section 40.

  (6) In the first embodiment, the arrangement member 70 has the arm portion 72 extending from the cross beam portion 71 to the side opposite to the condensing portion 20 and fixing the subcool portion 40. The subcool part 40 is provided on the side opposite to the cross beam part 71 with respect to the center 31 of the receiver part 30 provided on the side opposite to the condensing part 20 with respect to the cross beam part 71.

  According to this, it is possible to mount the subcool unit 40 away from the condensing unit 20 within the range of the physical size of the receiver unit 30. Therefore, by increasing the size of the air mix space 55 by the arms 72, it is possible to further mix the air warmed by passing through the subcool unit 40 and the cool air that has passed outside the subcool unit 40.

  (7) The refrigeration cycle apparatus 1 of the first embodiment includes the condenser unit 10 described above.

  According to this, the refrigeration cycle apparatus 1 can improve the cooling performance and prevent the components from the compressor 2 to the expansion valve 3 from being damaged or broken.

(2nd Embodiment)
A second embodiment will be described. In the second embodiment, a mud remover is added to the first embodiment, and the other components are the same as those in the first embodiment. Therefore, only different portions from the first embodiment will be described.

  As shown in FIGS. 8 to 10, the condenser unit 10 of the second embodiment includes a mud removing plate 54 extending from the bottom plate 53 to the side opposite to the condenser 20. In the mud removing plate 54, a portion 54a located below the subcool portion 40 is inclined upward from the condensing portion 20 toward the outside air. Further, the portion 54b of the mud removing plate 54 on the outside air side from the subcool portion 40 extends to the outside air side substantially parallel to the bottom plate 53 at a position higher than the bottom plate 53. Therefore, the distance D1 between the lower surface of the subcool unit 40 and the mud removing plate 54 is shorter than the distance D2 between the lower surface of the subcool unit 40 and the bottom plate 53. Even with such a configuration, a space through which air flows is formed between the lower surface of the subcool unit 40 and the mud removing plate 54. Thereby, as indicated by the arrow AF13, the cold air that has passed through the space between the lower surface of the subcool part 40 and the mud removing plate 54 flows into the air mix space 55. Thus, in the air mix space 55, the air that has passed through the subcool unit 40 and the air that has passed outside the subcool unit 40 are mixed. That is, the air that has passed through the subcool unit 40 is mixed with the air that has passed outside the subcool unit 40, so that the temperature decreases. The air mixed in the air mix space 55 flows into the gap between the tubes 23 forming the flow path of the condenser 20. Thus, a temperature difference between the refrigerant flowing through the flow path in the entire region of the condensing section 20 and the air mixed in the air mix space 55 is ensured. Therefore, the condensing section 20 condenses the refrigerant in the flow path in the entire region, thereby improving the heat exchange efficiency and improving the refrigerant condensing ability.

  Even when the condenser unit 10 according to the second embodiment described above includes the mud remover 54, by forming a space between the mud remover 54 and the subcool unit 40, the condenser unit 10 can pass through the space to the air mix space 55. It is possible to introduce cold air. Therefore, the second embodiment can also achieve the same operation and effect as the first embodiment.

(Other embodiments)
The present invention is not limited to the embodiments described above, and can be appropriately modified within the scope described in the claims. In addition, the above embodiments are not irrelevant to each other, and can be appropriately combined unless a combination is clearly impossible. In each of the above embodiments, it is needless to say that elements constituting the embodiments are not necessarily essential, unless otherwise clearly indicated as being essential or in principle considered to be clearly essential. No. In each of the above embodiments, when a numerical value such as the number, numerical value, amount, range, or the like of the constituent elements of the exemplary embodiment is mentioned, it is particularly limited to a specific number when it is clearly stated that it is essential and in principle. The number is not limited to the specific number unless otherwise specified. In each of the above embodiments, when referring to the shape of components and the like, positional relationship, and the like, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc., the shape, It is not limited to a positional relationship or the like.

  (1) In each of the above embodiments, the condenser unit 10 and the refrigeration cycle device 1 used for the bus have been described. On the other hand, in another embodiment, the condenser unit 10 and the refrigeration cycle device 1 may be used for a passenger car, a truck, a trailer, a railway, or the like.

  (2) In each of the above embodiments, the capacitor unit 10 mounted below the floor of the vehicle has been described. On the other hand, in another embodiment, the capacitor unit 10 may be mounted on a front portion, a rear portion, or a ceiling of a vehicle.

  (3) In another embodiment, the number of the blower 60, the condensing unit 20, the receiver unit 30, the subcool unit 40, and the like can be arbitrarily set.

  (4) In each of the above embodiments, the condensing section 20 and the subcooling section 40 have been described by way of example of the parallel flow type. On the other hand, in another embodiment, the condenser section 20 and the subcool section 40 may be, for example, serpentine type or plate fin type.

  (5) In each of the above embodiments, the condenser unit 10 has a configuration in which the upper surface of the subcool unit 40 is disposed at a position lower than the upper surface of the condenser unit 20. On the other hand, in another embodiment, the upper surface of the subcool unit 40 and the upper surface of the condenser unit 20 may be arranged at substantially the same height.

  (6) In each of the embodiments described above, as an example of the arrangement member 70, one configured by the cross beam portion 71 and the arm portion 72 has been described. On the other hand, in another embodiment, the arrangement member 70 is not limited to the cross beam portion 71 and the arm portion 72, and may be a member connected to the bottom plate 53, for example. Further, a top plate may be provided above the condenser section 20 and the receiver section 30, and the arrangement member 70 may be connected thereto. Alternatively, the width W1 of the subcool portion 40 may be increased, and the subcool portion 40 may be attached to the first side plate 51 and the second side plate 52. In this case, the first side plate 51 and the second side plate 52 constitute the arrangement member 70.

(Summary)
According to a first aspect described in part or all of the above-described embodiments, the condenser unit includes a blower, a condenser, a receiver, a subcooler, and an arrangement member. The blower generates an airflow. The condensing section has a flow path through which a high-pressure gas-phase refrigerant discharged from a compressor provided in the refrigeration cycle flows, and exchanges heat with the air blown by the blower through the refrigerant flowing from the upstream side to the downstream side through the flow path. To cool and condense. The receiver separates the refrigerant flowing out of the flow path on the downstream side of the condenser into a gaseous refrigerant and a liquid refrigerant. The subcool section supercools the liquid-phase refrigerant flowing out of the receiver section by heat exchange with air blown by a blower, and flows out toward an expansion valve of the refrigeration cycle. The arranging member arranges the subcool section in a region on the windward side of the airflow from the condensing section, and forms an air mix space in which air passing through the subcool section and air passing outside the subcool section are mixed with the subcool section and the condensing section. Formed between

  According to the second aspect, the width of the subcool portion is smaller than the width of the condensing portion.

  According to this, it is possible to form a space in which air flows outward in the width direction of the subcool portion. Therefore, the cool air that has passed through the space outside the width direction of the subcool portion and the air that has warmed through the subcool portion are mixed by the air mix space. Therefore, the air mixed in the air mix space can be introduced into the condensing section.

  According to the third aspect, the height of the subcool portion is smaller than the height of the condensing portion.

  According to this, it is possible to form a space in which air flows outside the subcool portion in the height direction. Therefore, the cold air passing through the space outside the height direction of the subcool portion and the air heated passing through the subcool portion are mixed in the air mix space. Therefore, the air mixed in the air mix space can be introduced into the condensing section.

  According to the fourth aspect, the width of the subcool portion is smaller than the width of the condensing portion, and the height of the subcool portion is smaller than the height of the condensing portion.

  According to this, it is possible to form a space in which air flows outward in the width direction and outward in the height direction of the subcool portion. Therefore, the cool air that has passed through the space outside the width direction and the height direction outside of the subcool portion and the air that has warmed through the subcool portion are mixed by the air mix space. Therefore, the air mixed in the air mix space can be introduced into the condensing section.

  According to the fifth aspect, the condenser unit further includes a first side plate provided on one side of the condensing portion and the subcooled portion, and a second side plate provided on the other side of the condensing portion and the subcooled portion. . The arranging member has a cross beam provided between the condensing part and the sub-cool part, straddling the first side plate and the second side plate.

  According to this, by arranging the cross beam portion between the condensing portion and the subcool portion, the subcool portion and the condensing portion can be attached to be separated from each other in the airflow direction. Therefore, the arrangement member can form an air mix space between the condensing section and the subcool section.

  According to the sixth aspect, the arrangement member further has an arm portion extending from the cross beam portion to the opposite side to the condensing portion and fixing the subcool portion. The receiver section is provided on the side opposite to the condensing section with respect to the cross beam section. The subcool part is provided on the opposite side of the cross beam part from the center of the receiver part.

  According to this, it is possible to attach the subcool unit away from the condenser unit within the range of the physical size of the receiver unit. Therefore, by enlarging the air mix space by the arms, the air warmed by passing through the subcool portion and the cool air passed by the outside of the subcool portion can be more mixed and introduced into the condensing portion.

  According to a seventh aspect, a refrigeration cycle apparatus includes a compressor, a condenser unit, an expansion valve, and an evaporator. The compressor compresses the refrigerant. The capacitor unit has been described from the first viewpoint. The expansion valve decompresses the refrigerant flowing out of the subcool section provided in the condenser unit. The evaporator evaporates the refrigerant by heat exchange between the air flowing in the air conditioning case and the refrigerant depressurized by the expansion valve, and flows the refrigerant toward the compressor.

  According to this, the refrigeration cycle device can improve the cooling performance by including the condenser unit described in the first aspect. Further, the refrigeration cycle device can prevent damage or failure of components from the compressor to the expansion valve.

DESCRIPTION OF SYMBOLS 1 Refrigeration cycle apparatus 2 Compressor 3 Expansion valve 10 Condenser unit 20 Condenser part 30 Receiver part 40 Subcool part 60 Blower 70 Arrangement members

Claims (5)

A condenser unit used in a refrigeration cycle (1),
A blower (60) for generating an air flow;
A flow path (21, 22, 23) through which a high-pressure gas-phase refrigerant discharged from a compressor (2) provided in the refrigeration cycle flows. A condensing section (20) for cooling and condensing by heat exchange with the blown air;
A receiver section (30) for separating the refrigerant flowing out of the flow path on the downstream side of the condensing section into a gas-phase refrigerant and a liquid-phase refrigerant;
A subcool section (40) that supercools the liquid-phase refrigerant flowing out of the receiver section by heat exchange with air blown by the blower and flows toward an expansion valve (3) of the refrigeration cycle;
The subcool portion is disposed in a region on the windward side of the airflow from the condensing portion, and an air mix space (55) in which air passing through the subcool portion and air passing outside the subcool portion is mixed with the subcool portion. An arrangement member (70) formed between the condenser and the condensing section;
A first side plate (51) provided on one side of the condenser section and the subcool section;
A second side plate (52) provided on the other side of the condensing part and the subcool part,
The arranging member includes a cross beam portion (71) provided between the condensing portion and the subcool portion across the first side plate and the second side plate, and an opposite side from the cross beam portion to the condensing portion. An arm portion (72) extending to fix the subcool portion,
The receiver section is provided on the opposite side of the condensing section of the cross beam section,
The capacitor unit , wherein the subcool unit is provided on a side opposite to the cross beam unit with respect to a center (31) of the receiver unit.   The capacitor unit according to claim 1, wherein a width (W1) of the subcool portion is smaller than a width (W2) of the condensing portion.   The capacitor unit according to claim 1, wherein a height (H1) of the subcool portion is smaller than a height (H2) of the condensing portion.   The capacitor unit according to claim 1, wherein a width of the subcool portion is smaller than a width of the condenser portion, and a height of the subcool portion is smaller than a height of the condenser portion. A refrigeration cycle device,
A compressor (2) for compressing the refrigerant;
A capacitor unit (10) according to claim 1,
An expansion valve (3) for reducing the pressure of the refrigerant flowing out of the subcool unit (40) of the condenser unit;
An evaporator (4) comprising: an evaporator (4) that evaporates a refrigerant by heat exchange between air flowing in an air conditioning case and a refrigerant depressurized by the expansion valve, and flows the refrigerant toward the compressor.

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