WO2023242924A1 - Dispositif de climatisation - Google Patents

Dispositif de climatisation Download PDF

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Publication number
WO2023242924A1
WO2023242924A1 PCT/JP2022/023682 JP2022023682W WO2023242924A1 WO 2023242924 A1 WO2023242924 A1 WO 2023242924A1 JP 2022023682 W JP2022023682 W JP 2022023682W WO 2023242924 A1 WO2023242924 A1 WO 2023242924A1
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WO
WIPO (PCT)
Prior art keywords
air
railway vehicle
cover
air conditioner
indoor unit
Prior art date
Application number
PCT/JP2022/023682
Other languages
English (en)
Japanese (ja)
Inventor
和平 新宮
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2022/023682 priority Critical patent/WO2023242924A1/fr
Priority to JP2024527926A priority patent/JPWO2023242924A1/ja
Publication of WO2023242924A1 publication Critical patent/WO2023242924A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning

Definitions

  • the present disclosure relates to an air conditioner.
  • the air conditioner described in Patent Document 1 includes an outside air intake grille through which air from outside the vehicle flows into the side surface of a vehicle air conditioning duct mounted on the roof of a railway vehicle. The outside air is mixed with the air coming in from the passenger compartment of the railway vehicle and guided to the cooler.
  • An object of the present invention is to provide an air conditioner that suppresses infiltration of rainwater at times.
  • an air conditioner is an air conditioner mounted on a railway vehicle, and includes a casing in which equipment constituting the air conditioner is mounted, and a case above the casing.
  • the device includes a cover that covers the top and side surfaces of the casing, and a gap is formed between the side surface of the cover and the side surface of the casing.
  • the casing includes a heat exchanger that exchanges heat between the air flowing in from the passenger compartment of the railway vehicle and the refrigerant circulating in the refrigeration circuit, and a heat exchanger that directs the air that has completed heat exchange in the heat exchanger to the passenger compartment.
  • the air blower is provided with an indoor unit room in which a blower for blowing air is arranged, and a case-side air introduction port that introduces air in the gap between the side surface of the cover and the side surface of the case into the indoor unit room.
  • the cover includes a cover-side air introduction port that introduces air from outside the vehicle into the gap between the side surface of the cover and the side surface of the casing.
  • the cover side air inlet and the casing side air inlet are spaced apart from each other in the front and rear in the running direction of the railway vehicle.
  • the casing side air inlet and the cover side air inlet are arranged to be spaced apart from each other in the running direction of the railway vehicle, so that rainwater is prevented from entering the inside of the air conditioner. . Therefore, even during rainy weather, the amount of outside air taken in can be increased and the cabin can be sufficiently ventilated.
  • FIG. 8 An explanatory diagram showing an air conditioner according to an embodiment of the present disclosure broken down into basic components
  • a perspective view showing the outer shape of the cover included in the air conditioner shown in FIG. 1 A perspective view showing the outer shape of a casing included in the air conditioner shown in FIG. 1
  • a plan view of the air conditioner shown in Figure 1 Side view of the air conditioner shown in FIG. 4
  • FIG. 8 is an explanatory diagram showing the configuration of the case side air inlet provided in the air conditioner shown in FIG. 7, and is a diagram showing a state in which the damper is fully closed.
  • FIG. 8 is an explanatory diagram showing the configuration of the case side air inlet provided in the air conditioner shown in FIG. 7, and is a diagram showing a state in which the damper is fully closed.
  • FIG. 8 is an explanatory diagram showing the configuration of the casing side air inlet provided in the air conditioner shown in FIG. 7, and is a diagram showing a state in which the damper is fully opened.
  • a sectional view showing the air conditioner shown in FIG. 6 taken along the plane indicated by the line XI-XI in FIG. A plan view showing the configuration of an air conditioner according to a modified example according to FIG. 6.
  • FIG. 1 is an explanatory diagram showing an air conditioner 1 according to an embodiment of the present disclosure broken down into basic components.
  • the air conditioner 1 is mounted on the roof of a railway vehicle 2.
  • the air conditioner 1 also includes a cover 3, a housing 4, and a duct 5.
  • the cover 3 is a structural member that covers the top and side surfaces of the housing 4 to protect the housing 4 from wind, rain and sunlight.
  • the housing 4 is a box-shaped member with an open top surface, and is a structural member on which components of the air conditioner 1, which will be described later, are mounted.
  • the duct 5 is a structural member that is located between the housing 4 and the railway vehicle 2 and forms a flow path for transporting air between the air conditioner 1 and the railway vehicle 2. Air in a cabin (not shown) of the railway vehicle 2 is transported through a duct 5 to the inside of the casing 4, cooled there, and then transported through the duct 5 to a cabin (not shown) of the railway vehicle 2. be done.
  • FIG. 2 is a perspective view showing the outer shape of the cover 3 included in the air conditioner 1 (not shown in FIG. 2).
  • the cover 3 includes an intake grill 6 and exhaust grilles 7a and 7b on its upper surface.
  • the cover 3 also includes side air inlets 8a and 8b on the left and right sides. Note that the side air introduction ports 8a and 8b are specific examples of the cover side air introduction ports according to the present disclosure.
  • FIG. 3 is a perspective view showing the outer shape of the casing 4 included in the air conditioner 1 (not shown in FIG. 3).
  • the housing 4 is a box-shaped member with an open top surface, and as shown in FIG. 3, the bottom plate is provided with return air inlets 9a, 9b and an air outlet 10. .
  • the air inside the railway vehicle 2 flows into the housing 4 through the return air introduction ports 9a and 9b, and the air that has been processed in the air conditioner 1 is sent to the air supply. It is sent out towards the railway vehicle 2 through the exit 10.
  • the casing 4 is provided with casing-side air inlets 11a and 11b on its left and right sides. As will be described later, air flowing between the cover 3 and the casing 4 through the side air inlets 8a, 8b (not shown in FIG. 3) passes through the casing side air inlets 11a, 11b, and flows into the casing. It flows into the inside of the body 4. Furthermore, the casing 4 has cooling air inlets 12a, 12b on its bottom surface, and vent holes 13a, 13b on its side surfaces. The functions of the cooling air inlets 12a, 12b and the vents 13a, 13b will be described later.
  • the housing 4 includes a partition wall 14 and is partitioned into a plurality of sections by the partition wall 14.
  • FIG. 4 is a plan view of the air conditioner 1.
  • FIG. 5 is a side view of the air conditioner 1.
  • the left-right direction of the figure corresponds to the traveling direction of the railway vehicle 2 (not shown in FIG. 4). That is, the railway vehicle 2 travels in the left-right direction in FIG.
  • the vertical direction in FIG. 4 corresponds to the width direction of the railway vehicle 2.
  • the side surface of the air conditioner that appears in FIG. 5 corresponds to the end surface of the railway vehicle 2 in the traveling direction.
  • the top surface of the air conditioner 1 is covered with the cover 3, and the cover 3 has an intake grill 6 and an exhaust grill 7a, 7b on the top surface, and side air inlets 8a, 8b on the left and right sides. It is equipped with
  • the air conditioner 1 includes the duct 5 that forms a flow path for transporting air between the air conditioner 1 and the railway vehicle 2.
  • the duct 5 includes first regions 5a and 5b that transport air from the compartment of the railway vehicle 2 to the air conditioner 1, and from the air conditioner 1 to the compartment of the railway vehicle 2. It is divided into a second area 5c for transporting air towards the air.
  • the air that flows from the compartment of the railway vehicle 2 into the casing 4 through the first regions 5a and 5b is called return air (RA), and the air that flows from the casing 4 through the second region 5c is called return air (RA).
  • the air flowing out into the compartment of the railway vehicle 2 will be referred to as cooling air (CR).
  • the direction in which air flows is indicated by a dashed-dotted line with an arrow.
  • FIG. 6 is a plan view showing the air conditioner 1 shown in FIG. 4 with the cover 3 removed.
  • the casing 4 of the air conditioner 1 is divided into four compartments by the partition wall 14, namely, an outdoor unit room 15, an electrical equipment room 16, an indoor unit room 17, and a compressor room 18. It is divided into. Further, a gap 3a is formed between the side surface of the cover 3 and the side surface of the casing 4. Air outside the railway vehicle 2 (not shown in FIG. 6) flows into the gap 3a through the side air introduction ports 8a and 8b. Note that in this specification, air flowing into the air conditioner 1 from the outside of the railway vehicle 2 through the side air introduction ports 8a and 8b will be referred to as fresh air (FA).
  • FA fresh air
  • Outdoor unit room In the outdoor unit room 15, an outdoor unit blower 19 and two outdoor unit heat exchangers 20a and 20b are arranged.
  • the outdoor unit blower 19 sucks air from outside the railway vehicle 2 into the outdoor unit room 15 via the intake grille 6 shown in FIG. 4, and sends the air to the outdoor unit heat exchangers 20a and 20b. It is a device.
  • the outdoor unit heat exchangers 20a and 20b are one of the components of a refrigeration circuit described later. In the outdoor unit heat exchangers 20a, 20b, heat is exchanged between the refrigerant circulating in the refrigeration circuit and the air passing through the outdoor unit heat exchangers 20a, 20b.
  • the refrigerant circulating in the refrigeration circuit is cooled by the air passing through the outdoor unit heat exchangers 20a, 20b.
  • the air that has passed through the outdoor unit heat exchangers 20a and 20b is discharged to the outside of the railway vehicle 2 through exhaust grilles 7a and 7b shown in FIG.
  • the electrical equipment room 16 is a compartment in which various electrical equipment involved in the operation and control of the air conditioner 1 are arranged.
  • the inverter device 21 is one of the electrical devices arranged in the electrical device room 16.
  • the inverter device 21 is a device that supplies AC power for operation to the air conditioner 1, and is an electric device that adjusts the speed or output of the air conditioner 1 by changing the frequency of the AC power as necessary. be.
  • the aforementioned cooling air inlet ports 12a, 12b are arranged on the bottom surface of the electrical equipment room 16, and the air in the first regions 5a, 5b of the duct 5 passes through the cooling air inlet ports 12a, 12b to the electrical equipment room 16.
  • guide plates 22a and 22b are arranged in the electrical equipment room 16 to guide the air flowing into the electrical equipment room 16 through the cooling air inlets 12a and 12b in a direction toward the inverter device 21.
  • the guide plates 22a and 22b are examples of guide members according to the present disclosure.
  • the aforementioned vent holes 13a and 13b are arranged on the side wall of the electrical equipment room 16, and air enters and exits between the electrical equipment room 16 and the gap 3a.
  • vents 13a and 13b are arranged in a side wall of the electrical equipment room 16 at a position close to the outdoor unit room 15. Further, the distance between the vents 13a, 13b and the outdoor unit room 15 is made smaller than the distance between the cooling air inlets 12a, 12b and the outdoor unit room 15.
  • indoor unit room In the indoor unit room 17, two indoor unit blowers 23a, 23b and two indoor unit heat exchangers 24a, 24b are arranged.
  • the indoor unit heat exchangers 24a and 24b are also components of the refrigeration circuit described later.
  • heat is exchanged between the refrigerant circulating in the refrigeration circuit and the air passing through the indoor unit heat exchangers 24a, 24b.
  • the return air inlet ports 9a, 9b and the air outlet port 10 described above are arranged on the bottom surface of the indoor unit room 17.
  • the above-mentioned case-side air inlet ports 11a and 11b are arranged on the side wall of the indoor unit room 17. Furthermore, the housing side air inlets 11a, 11b and the side air inlets 8a, 8b are spaced apart from each other in the front and rear in the traveling direction of the railway vehicle 2. Therefore, when directly facing the side air inlets 8a, 8b from the outside of the cover 3, the housing side air inlets 11a, 11b cannot be visually recognized through the side air inlets 8a, 8b. As a result, even if rainwater is blown into the gap 3a from the side air inlets 8a, 8b during rain, the rainwater will not be blown directly into the housing side air inlets 11a, 11b. Therefore, the intrusion of rainwater into the interior of the indoor unit room 17 is suppressed. As a result, intrusion of rainwater into the cabin of the railway vehicle 2 is suppressed.
  • the expansion valves 25a and 25b are also components of the refrigeration circuit, which will be described later, and are devices that adiabatically expand the refrigerant circulating within the refrigeration circuit.
  • compressor room Two compressors 26a and 26b are arranged in the compressor room 18.
  • the compressors 26a and 26b are elements constituting a refrigeration circuit, which will be described later, and are devices that adiabatically compress refrigerant circulating within the refrigeration circuit.
  • the outdoor unit heat exchanger 20a, the indoor unit heat exchanger 24a, the expansion valve 25a, and the compressor 26a are connected via a refrigerant pipe (not shown) to form a first refrigeration circuit.
  • the outdoor unit heat exchanger 20b, the indoor unit heat exchanger 24b, the expansion valve 25b, and the compressor 26b are also connected via refrigerant piping (not shown) to form a second refrigeration circuit. That is, the air conditioner 1 includes two sets of refrigeration circuits.
  • the indoor unit heat exchangers 24a and 24b function as heat absorbers that cool the air in the passenger compartment of the railway vehicle 2 by causing the refrigerant to absorb the heat carried by the air in the passenger compartment of the railway vehicle 2.
  • the outdoor unit heat exchangers 20a and 20b function as radiators that release heat carried by the refrigerant to the outside of the railway vehicle 2.
  • the air conditioner 1 functions as an air conditioner that cools the air in the cabin of the railway vehicle 2.
  • the first and second refrigeration circuits may be provided with a four-way valve that changes the direction in which the refrigerant flows, so that the air conditioner 1 functions as a dual-purpose air-conditioning/heating device.
  • FIG. 7 is a sectional view showing the indoor unit room 17 of the air conditioner 1 taken along the plane indicated by line VII-VII in FIG.
  • the return air RA flowing from the passenger compartment of the railway vehicle 2 into the first areas 5a and 5b of the duct 5 through the ventilation opening (not shown) passes through the return air introduction openings 9a and 9b and enters the interior of the vehicle. It flows into the cabin 17.
  • fresh air FA flows into the gap 3a between the housing 4 and the cover 3 via the side air inlets 8a, 8b (not shown in FIG. 7).
  • the fresh air FA that has flowed into the gap 3a flows into the indoor unit room 17 through the housing-side air introduction ports 11a and 11b.
  • the return air RA and fresh air FA that have flowed into the indoor unit room 17 are mixed with each other there.
  • the mixed air is sucked by the indoor unit blowers 23a, 23b, sent to the indoor unit heat exchangers 24a, 24b, and cooled there to generate cooling air CA.
  • the cooling air CA is sent out to the second region 5c of the duct 5 via the air outlet 10.
  • the cooling air CA sent out to the second region 5c flows into the compartment of the railway vehicle 2 through a ventilation hole (not shown).
  • the return air RA flowing in via the return air inlets 9a, 9b and the fresh air FA flowing in via the housing side air inlets 11a, 11b are mixed. , and is cooled to generate cooling air CA.
  • the cooling air CA is sent to the compartment of the railway vehicle 2 via the air outlet 10 and the second region 5c of the duct 5. As a result, the cabin of the railway vehicle 2 is cooled and ventilated.
  • the return air introduction ports 9a and 9b may be covered with a filter, grill, wire mesh, punched metal, or other element that causes pressure loss.
  • a filter By providing the return air inlets 9a, 9b with elements that cause pressure loss, the pressure loss that occurs in the casing side air inlets 11a, 11b becomes relatively small.
  • the amount of fresh air FA flowing into the indoor unit room 17 increases. As a result, the amount of ventilation increases.
  • FIGS. 8 and 9 are explanatory diagrams showing the configuration of the housing-side air inlets 11a and 11b.
  • the housing side air inlets 11a and 11b are provided with a filter 11c and a damper 11d.
  • the filter 11c is an anti-dust filter that filters out dust contained in the fresh air FA. Since the housing side air inlets 11a and 11b are provided with filters 11c, the intrusion of dust into the compartment of the railway vehicle 2 is suppressed. Note that it is sufficient that the filter 11c has a dustproof function, and its material and mechanical configuration are not limited.
  • the damper 11d is a device that is driven by an electric motor (not shown) and arbitrarily adjusts the opening degree of the housing side air intake ports 11a and 11b.
  • the damper 11d is in a fully closed state
  • the damper 11d is in a fully open state.
  • the opening degree of the damper 11d can be arbitrarily selected between a fully closed state and a fully open state.
  • the air conditioner 1 since the air conditioner 1 includes the damper 11d in the housing side air inlets 11a and 11b, the flow rate of the fresh air FA flowing into the indoor unit room 17 can be adjusted as necessary.
  • FIG. 10 is a cross-sectional view of the electrical equipment chamber 16 of the air conditioner 1 taken along the plane indicated by the line XX in FIG.
  • the inverter device 21 is mounted on the heat sink 27 and is in thermal conductive contact with the heat sink 27. A portion of the heat sink 27 protrudes into the second region 5c of the duct 5. Therefore, the heat generated in the inverter device 21 is transferred to the heat sink 27, and is radiated from the heat sink 27 toward the cooling air CA (not shown in FIG. 10) in the second region 5c of the duct 5. That is, the inverter device 21 is cooled by the cooling air CA flowing within the second region 5c of the duct 5.
  • cooling air inlets 12a and 12b are arranged on the bottom plate of the electrical equipment chamber 16. Therefore, as shown in FIG. 10, the return air RA in the first regions 5a, 5b of the duct 5 flows into the electrical equipment chamber 16 through the cooling air introduction ports 12a, 12b.
  • the return air RA that has flowed into the electrical device chamber 16 is guided by the guide plates 22a and 22b, flows toward the inverter device 21, and cools the inverter device 21.
  • the return air RA that has cooled the inverter device 21 is discharged to the outside of the railway vehicle 2 through the vents 13a, 13b and the gap 3a.
  • the flow velocity of return air RA hitting inverter device 21 is increased by providing guide plates 22a and 22b. Furthermore, since the inverter device 21 locally generates heat, it is required to concentrate cooling air in the areas where heat is generated. Therefore, in this embodiment, the return air RA is guided to the portion of the inverter device 21 where heat is generated by providing the guide plates 22a and 22b.
  • FIG. 11 is a cross-sectional view of the air conditioner 1 taken along the plane indicated by the line XI-XI in FIG.
  • the second region 5c of the duct 5 includes a flow dividing member 28.
  • the flow dividing member 28 includes an inclined surface that descends toward the right in FIG. 11 and an inclined surface that descends toward the left. Therefore, when the flow of cooling air CA discharged from the indoor unit blowers 23a and 23b and directed vertically downward collides with one of the inclined surfaces, the cooling air CA flows toward the right side in the figure in the second region 5c of the duct 5. flows.
  • the cooling air CA When the flow of cooling air CA collides with the other inclined surface, the cooling air CA flows toward the left in the figure in the second region 5c of the duct 5.
  • the flow of the cooling air CA flowing into the second region 5c of the duct 5 can be divided into a flow toward the right and a flow toward the left in the figure. That is, the flow of the cooling air CA can be divided into a flow toward the front end and a flow toward the rear end of the railway vehicle 2 (not shown in FIG. 11). Therefore, the cooling air CA can easily reach the front and rear ends of the railway vehicle 2.
  • FIG. 12 is a plan view showing the configuration of an air conditioner 1 according to a modified example, similar to FIG. 6.
  • the air conditioner 1 according to the modification includes end face air introduction ports 29 at the front and rear ends of the cover 3, and a communication port in the partition wall 14 that partitions the electrical equipment room 16 and the indoor unit room 17. It is characterized by comprising 30.
  • the end air inlet 29 is another example of the cover side air inlet according to the present disclosure.
  • the air conditioner 1 according to the modification is characterized in that it includes an end air inlet 29 as a cover side air inlet in addition to the side air inlets 8a and 8b.
  • the end air inlet 29 is characterized in that it includes an end air inlet 29 as a cover side air inlet in addition to the side air inlets 8a and 8b.
  • the end air inlet 29 as a cover side air inlet in addition to the side air inlets 8a and 8b, the flow rate of fresh air FA flowing into the gap 3a is increased. Therefore, the ventilation capacity of the air conditioner 1 is improved.
  • the side air inlets 8a and 8b may be eliminated, and only the end air inlet 29 may be provided as the cover side air inlet.
  • the air conditioner 1 includes the side air inlets 8a, 8b, the end air inlet 29, and the communication port 30.
  • the air inlet 29 may be provided but the communication port 30 may not be provided.
  • the air conditioner 1 may include the side air inlets 8a, 8b and the communication port 30, but may not include the end air inlet 29.
  • FIG. 13 is a cross-sectional view of the electrical equipment chamber 16 of the air conditioner 1 shown in FIG. 12, taken along the plane indicated by the line XIII-XIII in FIG.
  • the air conditioner 1 according to the modified example includes the communication port 30 in the partition wall 14 that partitions the electrical equipment room 16 and the indoor unit room 17, so that the air in the electrical equipment room 16 flows through the communication port 30. (not shown in FIG. 13), flows into the indoor unit room 17 (not shown in FIG. 13), and is sucked by indoor unit blowers 23a and 23b (not shown in FIG. 13).
  • the electrical equipment room 16 becomes under negative pressure with respect to the outside air, so the return air RA passes from the first regions 5a, 5b of the duct 5 through the cooling air inlets 12a, 12b, and enters the electrical equipment room 16. Inflow. Furthermore, fresh air FA flows into the electrical equipment chamber 16 from outside the railway vehicle 2 through the gap 3a and the vents 13a, 13b. In this way, in addition to the return air RA, the fresh air FA flows into the electrical device chamber 16, so that the inverter device 21 is cooled more effectively.
  • the indoor unit blowers 23a and 23b are centrifugal blowers.
  • the impeller included in a centrifugal blower is a sirocco fan with blades that are tilted in the direction of rotation, that is, tilted forward in a cross section cut along a plane perpendicular to the rotation axis, and a scirocco fan with blades that are tilted forward in a plane perpendicular to the rotation axis.
  • turbofans are broadly classified into turbofans, which have blades that are tilted in the opposite direction to the rotational direction, that is, tilted backwards.
  • sirocco fans are considered to be advantageous when a large air volume is required.
  • Turbofans are considered advantageous when high pressures are required.
  • FIG. 14 is a perspective view showing the outer shape of the impeller 31 included in the indoor unit blowers 23a and 23b.
  • the impeller 31 includes a disk-shaped main plate 31a, an annular shroud 31b, and a large number of blades 31c.
  • the blades 31c are arranged radially with respect to the rotation center 31d of the impeller 31, and are held between the main plate 31a and the shroud 31b.
  • the impeller 31 rotates, air is sucked from the center of the shroud 31b and flows into the interior of the impeller 31.
  • the air that has flowed into the impeller 31 passes through the gap between the blades 31c and is discharged in a direction away from the rotation center 31d of the impeller 31, that is, in a centrifugal direction.
  • FIG. 15 is a cross-sectional view showing the blade 31c of the impeller 31 shown in FIG. 14 taken along a plane perpendicular to the rotation axis of the impeller 31 (not shown in FIG. 15).
  • the cross-sectional shape of the blade 31c is inclined rearward with respect to the rotation direction of the impeller 31 at the inner side, that is, at a portion close to the rotation center 31d of the impeller 31. That is, in this region, the blade 31c is inclined in the direction opposite to the rotational direction of the impeller 31 as it moves away from the rotation center 31d.
  • the impeller 31 has the characteristics of a turbo fan in a portion close to the rotation center 31d.
  • the blade 31c has a turbofan shape at a portion close to the rotation center 31d.
  • the cross-sectional shape of the blade 31c is inclined forward with respect to the rotation direction of the impeller 31. That is, in this region, the blade 31c is inclined toward the rotation direction of the impeller 31 as it becomes farther away from the rotation center 31d.
  • the impeller 31 has the characteristics of a sirocco fan in a portion far from the rotation center 31d.
  • the blade 31c has a sirocco fan shape at a portion far from the rotation center 31d.
  • the impeller 31 has the characteristics of a turbo fan on the inner circumference side, and the characteristics of a sirocco fan on the outer circumference side. Therefore, on the inner peripheral side of the impeller 31, high efficiency similar to that of a turbo fan can be obtained. On the outer peripheral side of the impeller 31, a large air volume similar to that of a sirocco fan can be obtained. Therefore, by providing the impeller 31, it becomes possible to reduce the size and weight of the indoor unit blowers 23a and 23b. As a result, it becomes possible to reduce the size and weight of the air conditioner 1.
  • the housing side air inlets 11a, 11b are arranged apart from the end face air inlet 29 and the side air inlets 8a, 8b. Therefore, even if rainwater flows in from the end air inlet 29 and the side air inlets 8a, 8b, it is difficult for the rainwater to reach the housing side air inlets 11a, 11b. As a result, the intrusion of rainwater from the case-side air inlets 11a, 11b is suppressed, so even during rainy weather, the necessary amount of outside air can be introduced via the case-side air inlets 11a, 11b. Thus, the compartment of the railway vehicle 2 can be sufficiently ventilated. As a result, the sanitary environment in the compartment of the railway vehicle 2 is improved.
  • the heat sink 27 that is thermally connected to the inverter device 21 is disposed within the second region 5c of the duct 5 through which the air that has passed through the indoor unit room 17 flows, the cooling performance of the inverter device 21 is improved. Moreover, since the cooling air inlet ports 12a and 12b are provided in the electrical equipment compartment 16 to introduce the air inside the compartment of the railway vehicle 2 into the electrical equipment compartment 16, the cooling performance of the inverter device 21 is further improved. .
  • inverter device 21 is an electrical product, damage due to condensation is a problem, but in this embodiment, return air RA with a relatively high temperature is introduced into the electrical device room 16. The occurrence of dew condensation in the inverter device 21 is suppressed. Further, since the cooling air CA having a low temperature comes into contact with the heat sink 27, dew condensation is likely to occur, but since the heat sink 27 is not an electrical item, even if dew condensation occurs, no major problem occurs.
  • the impeller 31 provided in the indoor unit blowers 23a and 23b has the characteristics of a turbo fan on the inner periphery side and the characteristics of a sirocco fan on the outer periphery side, the impeller 31 and the indoor unit It is easy to make the blowers 23a and 23b smaller and lighter.
  • the impeller 31 has the above-mentioned features, its dimensions can be reduced compared to conventional sirocco fans.
  • static pressure can be increased while maintaining the same air volume as a sirocco fan. Therefore, according to this embodiment, it is possible to increase the amount of ventilation and maintain a high level of hygiene in the environment inside the vehicle.
  • the static pressure of the cooling air CA flowing through the second region 5c can be increased, so that the decrease in flow rate due to the pressure loss caused when the cooling air CA hits the heat sink 27 can be reduced.
  • the air conditioner 1 includes two sets of refrigeration circuits, but the air conditioner according to the present disclosure is not limited to having two sets of refrigeration circuits.
  • the air conditioner according to the present disclosure may include only one set of refrigeration circuits.
  • the guide plates 22a and 22b are shown as specific examples of the guide members disposed between the inverter device 21 and the cooling air inlets 12a and 12b, the guide members are not limited to plate-shaped members. It is sufficient that the guide member is a member that physically guides the air introduced from the cooling air introduction ports 12a, 12b to the inverter device 21, and its shape or configuration is not limited.
  • the guiding member may be a tube material or a box-shaped member.
  • the flow dividing member 28 disposed in the second region 5c of the duct 5 divides the flow of the cooling air CA flowing into the second region 5c of the duct 5 into a flow toward the front end of the railway vehicle 2 and a flow toward the rear end of the railway vehicle 2. It is sufficient to have the function of dividing the flow, and the shape and mechanical configuration of the flow dividing member 28 are not limited.
  • the slope of the slope included in the flow dividing member 28 is not limited to that illustrated.
  • the slope of the slope included in the flow dividing member 28 can be arbitrarily selected.
  • the slope provided on the flow dividing member 28 is not limited to one having a uniform slope.
  • the slope of the flow dividing member 28 is not limited to one that can be represented by a straight line in the cross-sectional shape shown in FIG.
  • the slope of the flow dividing member 28 may have a slope that changes continuously.
  • the slope of the flow dividing member 28 may be represented by a curved line in the cross-sectional shape shown in FIG.
  • the side air inlets 8a, 8b and the end air inlet 29 may be provided with grills to prevent rainwater from entering the side air inlets 8a, 8b and the end air inlet 29.
  • damper 11d is provided in the case side air inlets 11a, 11b
  • the damper 11d is not an essential component in the case side air inlets 11a, 11b.
  • the housing side air introduction ports 11a and 11b may not be provided with the damper 11d.
  • the present disclosure can be suitably used as an air conditioner.
  • Air conditioner 1 Air conditioner, 2 Railway vehicle, 3 Cover, 3a Gap, 4 Housing, 5 Duct, 5a, 5b First region, 5c Second region, 6 Intake grill, 7a, 7b Exhaust grill, 8a, 8b Side air introduction Port, 9a, 9b Return air inlet, 10 Air outlet, 11a, 11b Case side air inlet, 11c Filter, 11d Damper, 12a, 12b Cooling air inlet, 13a, 13b Vent, 14 Partition, 15 Outdoor unit room, 16 electrical equipment room, 17 indoor unit room, 18 compressor room, 19 outdoor unit blower, 20a, 20b outdoor unit heat exchanger, 21 inverter device, 22a, 22b guide plate, 23a, 23b indoor unit blower , 24a, 24b indoor unit heat exchanger, 25a, 25b expansion valve, 26a, 26b compressor, 27 heat sink, 28 flow dividing member, 29 end face air inlet, 30 communication port, 31 impeller, 31a main plate, 31b shroud, 31c blade, 31d rotation center,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention concerne un dispositif de climatisation (1) comprenant un boîtier (4) et un couvercle (3). Un espace (3a) est formé entre le couvercle (3) et le boîtier (4). Le boîtier (4) comprend une baie d'unité intérieure (17) dans laquelle sont disposés un échangeur de chaleur d'unité intérieure (24a, 24b) qui effectue un échange de chaleur entre l'air s'écoulant à l'intérieur depuis un compartiment d'un wagon de chemin de fer et un réfrigérant, et un ventilateur d'unité intérieure (23a, 23b) qui envoie de l'air au compartiment suite à l'échange de chaleur, et un orifice d'introduction d'air côté boîtier (11a, 11b) servant à introduire de l'air dans l'espace (3a) dans la baie d'unité intérieure (17). Le couvercle (3) comprend un orifice d'introduction d'air de face latérale (8a, 8b) servant à introduire de l'air à l'extérieur du wagon dans l'espace (3a). L'orifice d'introduction d'air de face latérale (8a, 8b) et l'orifice d'introduction d'air côté boîtier (11a, 11b) sont situés séparés l'un de l'autre vers l'avant et vers l'arrière dans une direction de déplacement du wagon de chemin de fer.
PCT/JP2022/023682 2022-06-13 2022-06-13 Dispositif de climatisation WO2023242924A1 (fr)

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PCT/JP2022/023682 WO2023242924A1 (fr) 2022-06-13 2022-06-13 Dispositif de climatisation
JP2024527926A JPWO2023242924A1 (fr) 2022-06-13 2022-06-13

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0516803A (ja) * 1991-07-08 1993-01-26 Mitsubishi Electric Corp 車両用空気調和装置
KR20090101543A (ko) * 2008-03-24 2009-09-29 모딘코리아 유한회사 철도 차량용 공기조화장치
JP2017144853A (ja) * 2016-02-17 2017-08-24 株式会社日立製作所 鉄道車両用空調装置
JP2020199805A (ja) * 2019-06-06 2020-12-17 三菱電機株式会社 車両用空調装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0516803A (ja) * 1991-07-08 1993-01-26 Mitsubishi Electric Corp 車両用空気調和装置
KR20090101543A (ko) * 2008-03-24 2009-09-29 모딘코리아 유한회사 철도 차량용 공기조화장치
JP2017144853A (ja) * 2016-02-17 2017-08-24 株式会社日立製作所 鉄道車両用空調装置
JP2020199805A (ja) * 2019-06-06 2020-12-17 三菱電機株式会社 車両用空調装置

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