JP2018071910A - Condenser unit and refrigeration cycle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a condenser unit enabling improvement of heat exchange efficiency.SOLUTION: A condensation section 20 has a flow passage in which a high-pressure gas-phase refrigerant flows, and cools and condenses the refrigerant flowing from an upstream side to a downstream side of the flow passage by exchanging heat with air blown by an air blower 60. A receiver section 30 separates the refrigerant flowing out from the flow passage at the downstream side of the condensation section 20 into the gas-phase refrigerant and a liquid-phase refrigerant. A subcool section 40 supercools the liquid-phase refrigerant flowing out from the receiver section 30 by exchanging heat with the air blown by the air blower 60. An arrangement member 70 arranges the subcool section 40 so that a range of the subcool section 40 in a region opposing to the flow passage at the upstream side of the condensation section 20 out of an air current windward region of the condensation section 20 is larger than that of the subcool section 40 in a region opposing to the flow passage at the downstream side of the condensation section 20.SELECTED DRAWING: Figure 6

Description

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

  Conventionally, a subcool type capacitor unit used in a refrigeration cycle apparatus is known.

  In the capacitor unit described in Patent Document 1, the subcool portion and the condensing portion are arranged side by side in the airflow direction. Specifically, the condensing part is arranged on the leeward side of the subcooling part. In this condenser unit, high-temperature and high-pressure refrigerant that has flowed into the flow path of the condenser section from the refrigerant inlet provided above the condenser section is condensed by heat exchange with air when flowing from the upper side to the lower side of the flow path. Then, the refrigerant flows out from the refrigerant outlet provided below the condensing unit. The refrigerant is separated into a gas phase refrigerant and a liquid phase refrigerant by the receiver unit. The liquid-phase refrigerant that has flowed out of the receiver section has a high degree of supercooling due to heat exchange with air when flowing through the subcool section. In addition, in this specification, supercooling means that the enthalpy of the liquid which exists at the temperature below a boiling point falls. The degree of supercooling refers to the temperature difference between the temperature of the liquid at a predetermined pressure and the saturation temperature of the liquid at the predetermined pressure.

JP 58-126215 A

  However, in the capacitor unit described in Patent Document 1, the subcool portion is disposed at a position facing the downstream-side flow passage among the flow passages of the condensing portion. As a result, the air warmed by exchanging heat with the refrigerant flowing through the subcooling part exchanges heat with the low-temperature refrigerant flowing through the flow path on the downstream side of the condensing part. At that time, it is conceivable that the temperature difference between the air heated by the subcooling section and the low-temperature refrigerant flowing through the flow path on the downstream side of the condensing section is small. Therefore, in this condenser unit, the heat exchange efficiency in the flow path on the downstream side of the condensing part is lowered, and therefore the refrigerant condensing capacity as the whole condensing part may be lowered. As a result, in the refrigeration cycle apparatus using this capacitor unit, there is a concern that the amount of the liquid-phase refrigerant is reduced and the cooling performance is degraded.

  Also, if the refrigerant condensing capacity of the condenser unit is low, the refrigerant pressure from the compressor to the expansion valve is high in the refrigeration cycle apparatus using the condenser unit. Therefore, the refrigeration cycle apparatus needs to increase the pressure resistance of the component parts in order to prevent damage to the component parts from the compressor to the expansion valve.

  An object of this invention is to provide the capacitor | condenser unit which can improve heat exchange efficiency in view of the said point, and the refrigerating-cycle apparatus using the same.

In order to achieve the above object, the invention according to claim 1 is a capacitor unit used in the refrigeration cycle apparatus (1),
A blower (60) for generating an airflow;
It has a flow path (21, 22, 23) through which the high-pressure gas-phase refrigerant discharged from the compressor (2) included in the refrigeration cycle apparatus flows, and the refrigerant flowing from the upstream side to the downstream side is blown by the blower. A condenser (20) that cools and condenses by heat exchange with the air,
A receiver (30) for separating the refrigerant flowing out of the flow path downstream of the condensing unit into a gas-phase refrigerant and a liquid-phase refrigerant;
A subcool section (40) that supercools the liquid-phase refrigerant flowing out from the receiver section by heat exchange with the air blown by the blower, and flows out toward the expansion valve (3) provided in the refrigeration cycle apparatus;
Of the region on the windward side of the air flow from the condensing unit, the range that the subcooling part occupies in the region that faces the upstream channel of the condensing unit than the region that the subcooling part occupies in the region facing the downstream channel of the condensing unit And a disposing member (70) for disposing the subcool portion so as to be large.

  According to this, the heat warmed by the heat exchange with the refrigerant flowing through the subcool portion and the high-temperature refrigerant flowing through the flow path upstream of the condensing portion are heat-exchanged, and the cold air that has passed below the subcool portion and It becomes possible to exchange heat with a low-temperature refrigerant flowing through the flow path on the downstream side of the condensing unit. Therefore, the cold air that has secured a temperature difference between the air heated by heat exchange with the refrigerant flowing through the subcooling section and the high-temperature refrigerant flowing through the flow path upstream of the condensing section, and has passed below the subcooling section And a low-temperature refrigerant flowing through the flow path on the downstream side of the condensing unit is ensured. Therefore, the condenser unit condenses the refrigerant in the entire region from the upstream side flow path to the downstream side flow path of the condensing unit, thereby improving the heat exchange efficiency and improving the refrigerant condensing capacity. As a result, the refrigeration cycle apparatus using this capacitor unit can increase the amount of liquid-phase refrigerant produced and improve the cooling performance.

  Moreover, the refrigeration cycle apparatus using this condenser unit can reduce the refrigerant pressure from the compressor to the expansion valve by improving the refrigerant condensing capacity of the condenser unit. Therefore, breakage or failure of components from the compressor to the expansion valve can be prevented.

The invention according to claim 6 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 from the subcooling section (40) of the condenser unit;
An evaporator (4) that 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 out the refrigerant toward the compressor.

  According to this, the refrigeration cycle apparatus 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 the bracket | parenthesis of each said means shows an example of a corresponding relationship with the specific means as 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 cross-sectional view taken along line III-III in FIGS. 1 and 2. It is a block diagram of a refrigerating cycle apparatus. It is explanatory drawing for demonstrating the flow of the refrigerant | coolant of a capacitor | condenser unit. It is explanatory drawing for demonstrating the flow of the air of a capacitor | condenser unit. It is a top view of the capacitor unit concerning a 2nd embodiment. It is a front view of the VIII direction of FIG. It is sectional drawing of the IX-IX line of FIG. 7 and FIG.

  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 to each other will be described with the same reference numerals.

(First embodiment)
A first embodiment will be described with reference to the drawings. The capacitor unit of the present embodiment is mounted on a vehicle such as a bus, and is used for a refrigeration cycle apparatus that constitutes an air conditioner.

  First, the refrigeration cycle apparatus 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 an annular shape by a pipe 5 and constitute a refrigerant circulation path.

  The compressor 2 sucks and compresses the refrigerant from the evaporator 4 side. The compressor 2 is driven by driving power transmitted from a vehicle running engine (not shown). An electric motor may be used as a power source for the compressor 2.

  The capacitor unit 10 includes a condensing 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 condensing unit 20. The gas-phase refrigerant that has flowed into the condensing unit 20 is cooled and condensed by heat exchange with the outside air when flowing through the flow path of the condensing unit 20. The condensing unit 20 is also called a radiator that radiates the gas-phase refrigerant to the outside air.

  The refrigerant that has flowed out of the condensing unit 20 flows into the receiver unit 30. The receiver unit 30 is a container for storing a refrigerant, separates the refrigerant that has flowed out from the flow path of the condensing unit 20 into a gas phase refrigerant and a liquid phase refrigerant, and flows the liquid phase refrigerant into the subcooling unit 40.

  The subcool unit 40 supercools the liquid-phase refrigerant that has flowed 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, becomes a mist-like gas-liquid two-phase state, and flows into the evaporator 4. The expansion valve 3 is configured 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 exchanging heat 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 vaporization of the refrigerant. The temperature of the air is adjusted by a heater core (not shown) and blown out into the passenger compartment. 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 according to the present embodiment is mounted under the floor of a vehicle such as a bus, for example, and takes in outside air from an air intake port provided on a side surface of the vehicle and cools and condenses the refrigerant.

  As shown in FIGS. 1 to 3, the capacitor 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 condensing unit 20, the receiver unit 30, and the subcool unit 40 described above. 70 and the like. In FIG. 1 to FIG. 3, piping connecting the condensing unit 20, the receiver unit 30, and the subcool unit 40 is omitted, and the flow of the refrigerant is shown by broken line arrows in FIG. 1. 2 and 3, the position of the lower surface of the floor of the vehicle when the capacitor unit 10 is attached to the vehicle is indicated by a one-dot chain line VF.

  The condensing unit 20, the receiver unit 30, the subcool unit 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 of the subcooling unit 40 and the condensing unit 20. The second side plate 52 is provided on the other side of the subcooling unit 40 and the condensing unit 20. The bottom plate 53 is provided below the subcooling 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 composed of a plurality of members.

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

  The condensing unit 20 is provided between the first side plate 51 and the second side plate 52. The capacitor unit 10 of the present embodiment includes two condensing units 20. The two condensing parts 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 by bolts or the like via the attachment member 29. The two condensing units 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 units 20. The condensing unit 20 has a flow path through which a high-pressure gas-phase refrigerant flows. The refrigerant flowing from the upstream side to the downstream side is cooled by heat exchange with air blown by the blower 60, and condensed. It is something to be made.

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

  The receiver unit 30 is provided at a position on the side opposite to the condensing unit 20 in the cross beam unit 71. The capacitor unit 10 of the present embodiment includes two receiver units 30. The two receiver portions 30 are fixed to the cross beam portion 71 via attachment members 39. The receiver unit 30 is a container for storing a refrigerant, and separates the refrigerant that has flowed 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 portion 72 included in the arrangement member 70 extends from the cross beam portion 71 to the side opposite to the condensing portion 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 beam portions 71 with bolts or the like.

  The subcool unit 40 supercools the liquid-phase refrigerant that has flowed out of the receiver unit 30 by heat exchange with the air blown by the blower 60. The refrigerant whose degree of supercooling is increased by the subcooling section 40 flows out toward the expansion valve 3 provided in the refrigeration cycle apparatus 1. The subcool portion 40 is provided at a position on the side opposite to the condensing portion 20 of the cross beam portion 71. Specifically, the subcool portion 40 is fixed to the arm portion 72 attached to the cross beam portion 71 by a bolt or the like via the attachment member 49. That is, the arrangement member 70 arranges the subcooling part 40 at a position away from the condensation part 20 in a region on the windward side of the airflow from the condensation part 20. Thereby, a space is formed between the condensing unit 20 and the subcooling unit 40.

  The subcool portion 40 and the two receiver portions 30 are provided side by side in the direction in which the cross beam portion 71 extends. Further, the subcool portion 40 is provided away from the cross beam portion 71 by the arm portion 72. Specifically, the subcool portion 40 is provided on the side opposite to the cross beam portion 71 with respect to the center 31 of the receiver portion 30.

  The width W1 of the subcooling part 40 is smaller than the width W2 of the condensing part 20. Therefore, spaces through which air flows are formed between the subcool portion 40 and the first side plate 51 and between the subcool portion 40 and the second 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. In the subcool portion 40, the difference Δ2 between the height of the lower surface of the subcool portion 40 and the height of the lower surface of the condensing portion 20 is larger than the difference Δ1 between the height of the upper surface of the subcool portion 40 and the upper surface of the condensing portion 20. Further, it is arranged by the arrangement member 70. In other words, in the arrangement member 70, the subcool portion 40 occupies a region facing the upstream flow path of the condensing unit 20 rather than a range where the subcool portion 40 occupies the region facing the downstream flow channel of the condensing unit 20. The subcool portion 40 is arranged so that the range becomes large. Thus, an opening for introducing outside air into the flow path on the downstream side of the condensing unit 20 is formed between the subcooling unit 40 and the bottom plate 53 without passing through the subcooling unit 40. In FIGS. 1 and 3, the height of the opening is indicated by an arrow M.

  Here, the flow of the refrigerant in the condensing unit 20, the receiver unit 30, and the subcooling unit 40 constituting the capacitor unit 10 will be described.

  As shown in FIG. 5, the condensing part 20 is a parallel flow type, for example. The condensing unit 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 The fin 24 is provided. 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. Note that the first tank 21, the second tank 22, and the numerous tubes 23 constitute a refrigerant flow path of the condensing unit 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 through the plurality of tubes 23 as indicated by the arrow RF1 from the first tank 21, and the second 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 below the separator 25 in the first tank 21. Further, the refrigerant flows from the first tank 21 through the plurality of tubes 23 as indicated by the arrow RF3, flows into the space below the separator 26 in the second tank 22, and flows out from the refrigerant outlet 28.

  The refrigerant flowing through the flow path of the condensing unit 20 is gradually cooled by heat exchange with the air flowing through the gap between the tube 23 and the tube 23 as it flows from the upstream side to the downstream side through the flow path constituted by the plurality of tubes 23 and the like. To condense. That is, by performing heat exchange between the refrigerant flowing through the flow path of the condensing unit 20 and 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. In addition, the upstream flow path in the flow path of the condensing unit 20 refers to a flow path on the refrigerant inlet 27 side than a half distance from the refrigerant inlet 27 to the refrigerant outlet 28, and a downstream flow path. The term “flow path” refers to a flow path on the refrigerant outlet 28 side than a half distance from the refrigerant inlet 27 to the refrigerant outlet 28.

  The refrigerant that has flowed out of the refrigerant outlet 28 of the condensing unit 20 flows into the receiver unit 30 from the inflow pipe 32 of the receiver unit 30. The receiver unit 30 is a container that stores a refrigerant. In the container, the refrigerant is separated into a gas phase refrigerant and a liquid phase refrigerant. The receiver unit 30 causes the liquid refrigerant stored at the bottom of the container to flow out from the outflow pipe 33 to the subcooling unit 40.

  The subcool portion 40 is also of a parallel flow type, for example, and communicates the first tank 41 provided on one side in the width direction, the second tank 42 provided on the other side in the width direction, and the first tank 41 and the second tank 42. A plurality of tubes 43, fins 44, and the like. The first tank 41, the second tank 42, and the numerous tubes 43 constitute the refrigerant flow path of the subcool portion 40.

  With this configuration, the liquid-phase refrigerant that has flowed into the first tank 41 from the refrigerant inlet 47 flows through the plurality of tubes 43 from the first tank 41 and flows into the second tank 42. The refrigerant flows out from the refrigerant outlet 48 of the second tank 42. As the refrigerant flowing through the flow path of the subcool portion 40 flows through the plurality of tubes 43, the degree of supercooling increases due to heat exchange with the air flowing through the gaps between the tubes 43 and 43. In addition, you may provide a separator in the 1st tank 41 and the 2nd tank 42 of the subcool part 40. FIG.

  Next, the air flow of the capacitor unit 10 will be described with reference to FIG.

  When the fan 61 is rotated by driving the electric motor 62 included in the blower 60, an air flow is generated in the space partitioned by the first side plate 51, the second side plate 52, the bottom plate 53, and the vehicle floor lower surface VF, and the outside air is introduced. The In FIG. 6, the air flow at that time is indicated by arrows AF1 to AF5.

  As indicated by the arrows AF1 and AF2, the air that has passed through the subcooling section 40 and has been heated by heat exchange with the refrigerant flowing through the subcooling section 40 is composed of a tube 23 and a tube that constitute a flow path on the upstream side of the condensing section 20. It flows in the gap with 23. On the other hand, as indicated by the arrow AF3, the cold air that has passed through the lower side of the subcool portion 40 flows into the gap between the tube 23 and the tube 23 constituting the flow path on the downstream side of the condensing unit 20. This ensures a temperature difference between the air heated by heat exchange with the refrigerant flowing through the subcooling section 40 and the high-temperature refrigerant flowing through the flow path upstream of the condensing section 20, and the lower side of the subcooling section 40 is A temperature difference between the cold air that has passed and the low-temperature refrigerant flowing in the flow path on the downstream side of the condensing unit 20 is ensured. Therefore, the condensation unit 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 liquid phase refrigerant generated in the condensing unit 20 increases.

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

  (1) The capacitor unit 10 of the first embodiment is subcooled in a region facing the upstream flow path of the condensing unit 20 from a range occupied by the subcooling part 40 in a region facing the downstream flow path of the condensing unit 20. The subcool portion 40 is arranged so that the range occupied by the portion 40 is increased.

  As a result, the air warmed by heat exchange with the refrigerant flowing through the subcooling section 40 and the high-temperature refrigerant flowing through the flow path upstream of the condensing section 20 are heat-exchanged, and the cold air that has passed below the subcooling section 40 It is possible to exchange heat with the low-temperature refrigerant flowing through the flow path on the downstream side of the condensing unit 20. For this reason, the capacitor unit 10 ensures a heat exchange efficiency since a temperature difference between the refrigerant and air is ensured in the entire region from the upstream flow path to the downstream flow path of the condensing unit 20. Condensation capacity can be improved. Therefore, the refrigeration cycle apparatus 1 using the capacitor unit 10 can increase the amount of liquid-phase refrigerant produced and improve the cooling performance.

  Further, the refrigeration cycle apparatus 1 using the condenser unit 10 can reduce the refrigerant pressure from the compressor 2 to the expansion valve 3 by improving the refrigerant condensing capacity of the condenser unit 10. Therefore, breakage or failure of components from the compressor 2 to the expansion valve 3 can be prevented.

  (2) In the first embodiment, the arrangement member 70 has a lower surface height of the subcool portion 40 and a lower surface of the condensing unit 20 than the difference Δ1 between the height of the upper surface of the subcooling portion 40 and the upper surface of the condensing portion 20. The subcool portion 40 is arranged so that the difference Δ2 from the height is increased.

  According to this, the range which the subcool part 40 occupies in the area | region which opposes the flow path of the upstream of the condensation part 20 becomes larger than the range which the subcool part 40 occupies in the area | region which opposes the flow path of the downstream side of the condensation part 20. .

  (3) In the first embodiment, an opening for introducing outside air into the flow path on the downstream side of the condensing unit 20 is formed between the subcooling unit 40 and the bottom plate 53 without passing through the subcooling unit 40.

  According to this, the cold air introduced from the opening between the subcooling part 40 and the bottom plate 53 flows into the flow path on the downstream side of the condensing part 20 without passing through the subcooling part 40. Therefore, a temperature difference between the low-temperature refrigerant flowing through the flow path on the downstream side of the condensing unit 20 and the cold air that exchanges heat with the refrigerant is ensured. Therefore, the capacitor unit 10 can increase the production amount of the liquid phase refrigerant.

  (4) In the first embodiment, the arrangement member 70 has a cross beam portion 71 and an arm portion 72. The cross beam portion 71 is provided across the first side plate 51 and the second side plate 52 between the condenser portion 20 and the subcool portion 40. The arm portion 72 extends from the cross beam portion 71 to the side opposite to the condensing portion 20 and fixes the subcool portion 40.

  According to this, the arrangement | positioning member 70 can arrange | position the subcool part 40 in a predetermined | prescribed position within the area | region on the windward side of the airflow from the condensation part 20. FIG.

  Moreover, the arrangement | positioning member 70 can attach the subcool part 40 and the condensation part 20 in the position away in the flow direction of airflow. Thereby, the air of the state which mixed the air which passed the subcool part 40 and was warmed and the cold air which passed the outer side of the subcool part 40 with respect to the flow path of the upstream of the condensation part 20 can be poured. .

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

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

(Second Embodiment)
A second embodiment will be described. In the second embodiment, a mud removing plate is added to the first embodiment, and the other parts are the same as those in the first embodiment. Therefore, only the parts different from the first embodiment will be described.

  As shown in FIGS. 7 to 9, the capacitor unit 10 of the second embodiment includes a mud plate 54 that extends from the bottom plate 53 to the side opposite to the condensing unit 20. In the mud removing plate 54, a portion 54 a located below the subcooling portion 40 is inclined upward from the condensation portion 20 side toward the outside air side. Further, the mud removing plate 54 extends to the outside air at a position where the portion 54 b on the outside air side from the subcool portion 40 is higher than the bottom plate 53 and substantially parallel to the bottom plate 53. Therefore, the distance D1 between the lower surface of the subcool portion 40 and the mud plate 54 is closer than the distance D2 between the lower surface of the subcool portion 40 and the bottom plate 53. Even with such a configuration, an opening for introducing outside air into the flow path on the downstream side of the condensing unit 20 without the subcooling unit 40 between the lower surface of the subcooling unit 40 and the mud removing plate 54. Is formed. In FIG. 9, the height of the opening is indicated by an arrow M.

  As a result, as indicated by the arrow AF6, the cold air that has passed through the lower opening of the subcooling section 40 flows into the flow path on the downstream side of the condensing section 20. As indicated by arrows AF1 and AF2, the air heated by the heat exchange with the refrigerant flowing through the subcooling section 40 when passing through the gap between the tube 43 and the tube 43 of the subcooling section 40 is It flows in the upstream flow path. This ensures a temperature difference between the air heated by heat exchange with the refrigerant flowing through the subcooling section 40 and the high-temperature refrigerant flowing through the flow path upstream of the condensing section 20, and the lower side of the subcooling section 40 is A temperature difference between the cold air that has passed and the low-temperature refrigerant flowing in the flow path on the downstream side of the condensing unit 20 is ensured. Therefore, the condensation unit 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.

  Even when the capacitor unit 10 according to the second embodiment described above includes the mud removing plate 54, it is possible to introduce cold air from the opening between the mud removing plate 54 and the subcool unit 40. Therefore, the second embodiment can achieve the same operational effects as the first embodiment.

(Other embodiments)
The present invention is not limited to the embodiment described above, and can be appropriately changed within the scope described in the claims. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the component, etc., the shape, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like.

  (1) In the above embodiments, the capacitor unit 10 and the refrigeration cycle apparatus 1 used for the bus have been described. On the other hand, in other embodiments, the capacitor unit 10 and the refrigeration cycle apparatus 1 may be used for passenger cars, trucks, trailers, railroads, and the like.

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

  (3) In other embodiments, the numbers 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 said embodiment, the condensation part 20 and the subcool part 40 demonstrated the thing of the parallel flow type as an example. In contrast, in other embodiments, the condensing unit 20 and the subcooling unit 40 may be, for example, a serpentine type or a plate fin type.

  (5) In each of the above embodiments, the capacitor unit 10 is configured to dispose the condensing unit 20 and the subcooling unit 40 in a state of being separated in the airflow direction. On the other hand, in other embodiments, the condensing unit 20 and the subcooling unit 40 may be arranged adjacent to each other.

  (6) In each of the above embodiments, as an example of the arrangement member 70, the configuration including 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 but may be a member connected to the bottom plate 53, for example. Moreover, a top plate may be provided above the condensing unit 20 and the receiver unit 30, and the arrangement member 70 may be connected thereto. Alternatively, the subcool portion 40 may be attached to the first side plate 51 and the second side plate 52 by increasing the width W1 of the subcool portion 40. In this case, the first side plate 51 and the second side plate 52 constitute the arrangement member 70.

(Summary)
According to the 1st viewpoint shown by one part or all part of the above-mentioned embodiment, the capacitor | condenser unit used for a refrigerating-cycle apparatus is equipped with an air blower, a condensation part, a receiver part, a subcool part, and an arrangement | positioning member. The blower generates an air flow. The condensing unit has a flow path through which a high-pressure gas-phase refrigerant discharged from a compressor included in the refrigeration cycle apparatus flows, and heats the refrigerant flowing from the upstream side to the downstream side of the flow path with the air blown by the blower. Cool by condensation and condense. A receiver part isolate | separates the refrigerant | coolant which flowed out from the flow path of the downstream of a condensation part into a gaseous-phase refrigerant | coolant and a liquid phase refrigerant | coolant. The subcooling section supercools the liquid refrigerant flowing out from the receiver section by heat exchange with the air blown by the blower, and flows out toward the expansion valve provided in the refrigeration cycle apparatus. The arrangement member is subcooled in the region facing the flow path upstream of the condensing unit from the range where the subcooling part occupies the region facing the flow path downstream of the condensing unit in the region upstream of the air flow from the condensing unit. The subcool portion is arranged so that the range occupied by the portion becomes large.

  According to the second aspect, in the arrangement member, the difference between the height of the lower surface of the subcool portion and the height of the lower surface of the condensation portion is larger than the difference between the height of the upper surface of the subcool portion and the height of the upper surface of the condensation portion. Arrange the sub-cool part.

  According to this, the range which a subcool part occupies to the area | region which opposes the flow path of the upstream of a condensation part becomes larger than the range which a subcool part occupies in the area | region which opposes the flow path of the downstream of a condensation part.

  According to the third aspect, the capacitor unit further includes a bottom plate provided below the subcooling unit and the condensing unit. Between the subcool portion and the bottom plate, an opening for introducing outside air into the flow path on the downstream side of the condensing portion is formed without passing through the subcool portion.

  According to this, the cold air introduced from the opening part between the subcool part and the bottom plate flows into the flow path on the downstream side of the condensing part without passing through the subcool part. Therefore, a temperature difference is ensured between the low-temperature refrigerant flowing through the flow path on the downstream side of the condensing unit and the cold air that exchanges heat with the refrigerant. Therefore, this capacitor unit can increase the production amount of the liquid phase refrigerant.

  According to the fourth aspect, the capacitor unit further includes a mud removing plate extending from the bottom plate to the side opposite to the condensing unit. The opening is formed between the subcool portion and the mudguard plate.

  According to this, even when the condenser unit includes a mud removing plate, it is possible to introduce cold air from the opening between the mud removing plate and the subcooling unit.

  According to a fifth aspect, the capacitor unit further includes a first side plate provided on one side of the subcooling unit and the condensing unit, and a second side plate provided on the other side of the subcooling unit and the condensing unit. Prepare. The arrangement member has a cross beam portion and an arm portion. The cross beam portion is provided across the first side plate and the second side plate between the condensation portion and the subcool portion. The arm portion extends from the transverse beam portion to the side opposite to the condensing portion and fixes the subcool portion.

  According to this, the arrangement | positioning member can arrange | position a subcool part in a predetermined position among the area | regions on the windward side of an airflow from the condensation part.

  Further, the arrangement member can be attached with the subcool portion and the condensing portion separated from each other in the airflow direction. Thereby, the air which mixed the warm air which passed the subcool part and the cold air which passed the outer side of the subcool part can be poured with respect to the flow path of the upstream of a condensation part.

  According to a sixth aspect, the 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 in the first aspect. The expansion valve depressurizes the refrigerant that flows out from the subcooling section included in the capacitor unit. The evaporator evaporates the refrigerant by exchanging heat between the air flowing in the air conditioning case and the refrigerant decompressed by the expansion valve, and flows out the refrigerant toward the compressor.

  According to this, the refrigeration cycle apparatus can improve the cooling performance by including the capacitor unit described in the first aspect. In addition, the refrigeration cycle apparatus can prevent breakage or failure of components from the compressor to the expansion valve.

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

Claims (6)

A condenser unit used in the refrigeration cycle apparatus (1),
A blower (60) for generating an airflow;
The blower has a flow path (21, 22, 23) through which a high-pressure gas-phase refrigerant discharged from a compressor (2) included in the refrigeration cycle apparatus flows, and the refrigerant that flows from the upstream side to the downstream side of the flow path is used as the blower. A condenser (20) for cooling and condensing by heat exchange with the air blown by
A receiver (30) for separating the refrigerant flowing out of the flow path downstream of the condensing unit into a gas-phase refrigerant and a liquid-phase refrigerant;
A subcool section (40) that supercools the liquid-phase refrigerant flowing out from the receiver section by heat exchange with the air blown by the blower, and flows out toward the expansion valve (3) included in the refrigeration cycle apparatus;
A region facing the flow channel upstream of the condensing unit from a range occupied by the subcooling unit in a region facing the flow channel downstream of the condensing unit in a region on the windward side of the air flow from the condensing unit And a disposing member (70) for disposing the subcool portion so that a range occupied by the subcool portion is large.   The arrangement member has a difference (Δ2) between the height of the lower surface of the subcool portion and the height of the lower surface of the condensing portion, rather than the difference (Δ1) between the height of the upper surface of the subcool portion and the upper surface of the condensing portion. The capacitor unit according to claim 1, wherein the subcool portion is arranged so as to increase. Further comprising a bottom plate (53) provided below the subcooling part and the condensing part,
3. The capacitor according to claim 1, wherein an opening for introducing outside air into the flow path on the downstream side of the condensing unit is formed between the subcooling unit and the bottom plate without passing through the subcooling unit. unit. A mud removing plate (54) extending from the bottom plate to the opposite side of the condensing unit;
The capacitor unit according to claim 3, wherein the opening is formed between the subcool portion and the mud plate. A first side plate (51) provided on one side of the subcool portion and the condensing portion;
A second side plate (52) provided on the other side of the subcooling part and the condensing part,
The arrangement member is
A cross beam portion (71) provided across the first side plate and the second side plate between the condensing portion and the subcool portion;
The capacitor unit according to any one of claims 1 to 4, further comprising: an arm portion (72) extending from the lateral beam portion to the opposite side of the condensing portion and fixing the subcool portion. 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 from the subcooling section (40) included in the capacitor unit;
A refrigeration cycle apparatus comprising: an evaporator (4) that evaporates the refrigerant by heat exchange between the air flowing in the air-conditioning case and the refrigerant decompressed by the expansion valve, and flows the refrigerant toward the compressor.

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