Vehicle air conditioning system

Abstract

To provide a vehicular air conditioner capable of suppressing a performance deterioration in a heat exchanger by making a cleaning tool reach a surface of the heat exchanger on the side at which an air blower is installed.SOLUTION: A vehicular air conditioner 2 includes a housing 34, a cover 33 for forming an air course by being combined with the housing 34, an outdoor air blower 32 provided in the air course, and a plurality of outdoor heat exchangers 31 provided on both sides of the outdoor air blower 32 to partition the air course into a plurality of spaces to perform heat exchange between a refrigerant and outdoor air outside a railway vehicle 1 sucked into the air course by the outdoor air blower 32. The cover 33 is configured to have a plurality of cover openings 33a, 33b being openings communicating the outside of the railway vehicle 1 and the air course with each of the plurality of spaces, and inspection openings 33c, 33d provided independently of the plurality of cover openings 33a, 33b to be openings communicating the outside of the railway vehicle 1 and the air course with a space with the outdoor air blower 32 provided among the plurality of spaces with the air course and configured to be openable and closable.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an air conditioning device for a vehicle. [Background technology]

[0002] A conventional vehicle air conditioning device is disclosed in which, for example, a cover 10 has a wire mesh 13 stretched over an inlet 12 facing the upper surface of an exterior heat exchanger 2 (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2014 / 081032 (paragraph 0018, Figure 2) Summary of the Invention [Problem to be solved by the invention]

[0004] In such vehicle air conditioning systems, by removing the wire mesh, it is possible to easily reach the opposite side of the heat exchanger from the side where the blower is installed with a cleaning tool and clean it, but the other side of the heat exchanger where the blower is installed is difficult to reach with a cleaning tool, which has led to the problem of dirt accumulating on the heat exchanger and deteriorating its performance.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a vehicle air conditioning device that allows cleaning tools to reach the side of the heat exchanger on which the blower is installed, thereby suppressing performance deterioration of the heat exchanger. [Means for solving the problem]

[0006] The vehicle air conditioning device according to the present disclosure includes a housing and The housing is covered with a top cover on the top side,The vehicle is equipped with a cover that forms an air passage when combined with a housing, a blower provided in the air passage, and a plurality of heat exchangers that are provided on both sides of the blower so as to divide the air passage into a plurality of spaces and perform heat exchange between the refrigerant and the outside air outside the vehicle that is drawn into the air passage by the blower, and the cover has a plurality of cover openings that are openings that connect the outside of the vehicle to the air passage in each of the plurality of spaces, and a plurality of cover openings that are separate from the plurality of cover openings. , on the top cover Established ,car Both outside and A space where a fan is installed The inspection hatch is an opening that communicates with the above and is configured to be openable and closable. [Effects of the Invention]

[0007] According to the vehicle air conditioning device of the present disclosure, a cleaning tool can reach the surface of the heat exchanger on which the blower is installed, thereby suppressing performance degradation of the heat exchanger. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram of a railway vehicle equipped with a vehicle air conditioning device according to a first embodiment. [Figure 2] 1 is a schematic top view of a vehicle air conditioning device according to a first embodiment. [Figure 3] 1 is a perspective view showing the appearance of the exterior of a vehicle air conditioning device according to Embodiment 1. FIG. [Figure 4] 2 is a cross-sectional view taken along the line AA showing the air flow of the vehicle air conditioning device according to the first embodiment. FIG. [Figure 5] 2 is a cross-sectional view taken along the line AA showing a cleaning mode of the vehicle air conditioning device according to the first embodiment. FIG. [Figure 6] 1 is a perspective view showing the exterior of a vehicle air conditioning device according to Embodiment 1 with a cover removed; [Figure 7] 1 is a side perspective view showing a part of the exterior of a vehicle air conditioning device according to Embodiment 1. FIG. [Figure 8] 10 is a modified example of the exterior of the vehicle air conditioning device according to the first embodiment. [Figure 9]10 is a modified example of the exterior of the vehicle air conditioning device according to the first embodiment. [Figure 10] 10 is a front view of a side plate of a housing in a modified example of the vehicle air conditioning apparatus according to the first embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiment 1 The vehicle air conditioning system according to the first embodiment will be described with reference to Fig. 1. In the figure, the same reference numerals denote the same or equivalent parts, and this applies throughout the entire specification. In addition, although a railway vehicle is used as an example of the vehicle in this disclosure, it is not necessarily limited to railway vehicles.

[0010] Fig. 1 is a schematic diagram of a railway vehicle 1 equipped with a vehicle air conditioning device 2 according to embodiment 1. As shown in Fig. 1, the vehicle air conditioning device 2 according to embodiment 1 is mounted on the railway vehicle 1. The vehicle air conditioning device 2 is composed of an exterior portion 3 and an interior portion 4.

[0011] The railway vehicle 1 is a vehicle that runs on tracks and is used for train operation. The vehicle air conditioning unit 2 is an air conditioning unit that uses a refrigeration cycle, and in this disclosure is installed on top of the railway vehicle 1. The vehicle air conditioning unit 2 is composed of an exterior room 3 that takes in outside air and performs heat exchange, and an interior room 4 that takes in passenger compartment air and performs heat exchange. The exterior room 3 and the interior room 4 are installed adjacent to each other in the direction of travel of the railway vehicle 1.

[0012] Fig. 2 is a schematic top view of the vehicle air conditioning device 2 according to Embodiment 1. Fig. 2 is a schematic view mainly showing the arrangement of devices, and the cover of the vehicle air conditioning device 2 and the like are omitted. The vehicle air conditioner 2 has a compressor 46, an outdoor heat exchanger 31, a capillary tube, and an indoor heat exchanger 43 as its main components. Furthermore, since the vehicle air conditioner 2 is an air conditioner that utilizes a refrigeration cycle, various components, including the above-mentioned main components, are connected by refrigerant piping. Note that the capillary tube is not shown. In some cases, an expansion valve may be used instead of the capillary tube.

[0013] The outdoor part 3 has an outdoor heat exchanger 31 and an outdoor blower 32 . The outdoor heat exchanger 31 exchanges heat between the refrigerant and outside air drawn in from outside the railway vehicle 1. The refrigerant is used in a refrigeration cycle and is a medium for transferring heat. The outdoor heat exchanger 31, which will be described in detail later, is provided in an air passage formed by a housing and a cover so as to divide the air passage into multiple spaces.

[0014] The exterior blower 32 is a fan provided in the air passage, which draws in outside air from outside the railway vehicle 1, flows the outside air through the exterior heat exchanger 31, and then exhausts the air again outside the railway vehicle 1. The exterior blower 32 may be, for example, an axial flow fan, but is not limited to this.

[0015] The indoor part 4 has a watertight structure that prevents the intrusion of rainwater and the like from the outside, and includes an inverter 41, an indoor blower 42, an indoor heat exchanger 43, a return port 44, a drain port 45, a compressor 46, and an accumulator 47. The outdoor part 3 does not have a watertight structure.

[0016] The inverter 41 is mainly used to control the rotation speed of a compressor 46, which will be described later. The vehicle air conditioning device 2 can adjust the capacity of the refrigeration cycle using the inverter 41. The indoor blower 42 is a fan that draws in air from the passenger compartment of the railway vehicle 1 and flows the air through the indoor heat exchanger 43, thereby exchanging heat between the refrigerant and the air in the passenger compartment. The indoor blower 42 then exhausts the air from the passenger compartment after heat exchange back into the passenger compartment. The indoor blower 42 may be, for example, a cross-flow fan, but is not limited to this. The indoor heat exchanger 43 exchanges heat between the air from the passenger compartment of the railway vehicle 1 and the refrigerant. The return port 44 is an opening that connects the passenger compartment with the interior 4 and is an opening for blowing the air from the passenger compartment after heat exchange in the indoor heat exchanger 43 back into the passenger compartment. In railway vehicles 1, the refrigeration cycle is often used for air conditioning, and the air from the passenger compartment is usually cooled by the indoor heat exchanger 43. The drain outlet 45 discharges drain water generated when moisture in the cabin air condenses as the cabin air is cooled by the indoor heat exchanger 43. The compressor 46 is a device for compressing and circulating the refrigerant. The accumulator 47 is a gas-liquid separator that supplies gas-phase refrigerant to the compressor 46 and prevents liquid compression in the compressor 46.

[0017] Next, the structure of the exterior part 3 of the vehicle air conditioning device 2 will be described with reference to FIGS. Fig. 3 is an external perspective view of the exterior part 3 of the vehicle air conditioning device 2 according to embodiment 1. In Fig. 2, the cover 33 of the vehicle air conditioning device 2 is omitted, but in Fig. 3, the cover 33 is included in the illustration. Fig. 4 is a cross-sectional view taken along line AA, showing the air flow in the vehicle air conditioning device 2 according to embodiment 1. The line AA is shown in Fig. 2. Fig. 5 is a cross-sectional view taken along line AA, showing the cleaning mode of the vehicle air conditioning device 2 according to embodiment 1. Fig. 6 is an external perspective view of the exterior part 3 of the vehicle air conditioning device 2 according to embodiment 1, with the cover 33 removed.

[0018] The cover 33 covers the housing 34 and is composed of a top cover 331 on the top side, a gable cover 333 on the gable side opposite the interior 3, and two opposing side covers 332 on the side. Here, the top side is the direction from the floor of the housing 34 toward the top cover 331. In other words, the top side is the side facing away from the railway vehicle 1 when an axis perpendicular to the floor of the housing 34 is taken. If the exterior 3 is provided on the roof of the railway vehicle 1, the top side is the side above the axis perpendicular to the floor of the housing 34, i.e., the side facing away from the railway vehicle 1. On the other hand, if the exterior 3 is provided on the bottom of the railway vehicle 1, the top side is the side below the axis perpendicular to the floor of the housing 34, i.e., the side facing away from the railway vehicle 1 toward the ground. The axis perpendicular to the floor of the housing 34 will be referred to as the vertical axis hereinafter. The surface perpendicular to the direction of travel of the railway vehicle 1 will be referred to as the gable side. The axis parallel to the direction from the exterior 3 to the interior 4 will be referred to as the side axis hereinafter. Also, if the direction perpendicular to the vertical axis and the side axis is taken as the axis, the side sides are on both the positive and negative sides of the axis.

[0019] The top cover 331 of the cover 33 has a cover opening 33a, a cover opening 33b, and an inspection hatch 33c. The cover opening 33a may be configured as, for example, a shuttered window or a wire mesh opening, but is not limited to these examples. The cover opening 33b has a shuttered window 33e that is configured as an openable / closable shutter. The shuttered window 33e of the cover opening 33b is formed to fit a rectangular opening, making it easier to lift than a square opening. The shuttered window 33e of the cover opening 33b is supported by stays. The end cover also has an inspection hatch 33d. While the inspection hatches 33c and 33d are shown in both the top cover and the end cover in Figure 3, they may be provided on at least one of them.

[0020] The air passage for the exterior 3 is formed by combining the housing 34 and the cover 33. The air passage for the exterior 3 is divided into a plurality of spaces by providing the exterior heat exchangers 31. In FIG. 4, two exterior heat exchangers 31 are provided near two opposing side covers 332, respectively, so that the air passage is divided into three spaces. The exterior heat exchanger 31 mounted on the vehicle air conditioning device 2 is provided at an angle to the vertical axis, and has a larger surface area available for heat exchange than when it is simply provided parallel to the vertical axis.

[0021] The outdoor blower 32 is provided in the air passage, approximately in the center, with the two outdoor heat exchangers 31 located on either side. In other words, the two outdoor heat exchangers 31 are provided with the outdoor blower 32 between them. Of the cover openings 33a and 33b, the cover opening 33b in a space other than the space where the outdoor blower 32 is provided is configured to be openable and closable.

[0022] The cover opening 33a and the cover opening 33b are both openings that communicate the air passage with the outside of the railway vehicle 1, and function as air intake and exhaust ports for the exterior blower 32. The cover opening 33a of the top cover 331 is formed by an armor window, and is provided above the exterior blower 32, and is in contact with the space in the air passage partitioned by the exterior heat exchanger 31 in which the exterior blower 32 is provided. The cover opening 33b of the top cover 331 has an openable and closable armor window 33e attached to the opening, and is an opening provided so as to be in contact with a space in the air passage partitioned by the exterior heat exchanger 31 that is different from the space in which the exterior blower 32 is provided.

[0023] The arrows in Fig. 4 indicate the air flow when cover opening 33b functions as an intake port and cover opening 33a functions as an exhaust port. Note that inspection hatch 33c is normally closed while outdoor blower 32 is running, and when outdoor blower 32 is running, outside air is discharged through cover opening 33a, which is the exhaust port shown in Fig. 3, rather than through inspection hatch 33c.

[0024] When the outdoor blower 32 is driven, the pressure in the air passage of the exterior part 3 becomes lower than atmospheric pressure, and therefore outside air flows into the exterior part 3 through the cover opening 33b. The outside air that flows into the exterior part 3 passes through the outdoor heat exchanger 31, is then sucked into the outdoor blower 32, where it is pressurized, and is then blown out to the outside through the cover opening 33a. Depending on the characteristics of the outdoor blower 32, the cover opening 33a may function as an intake port and the cover opening 33b as an exhaust port.

[0025] The inspection hatch 33c in the top cover 331 is provided separately from the cover openings 33a and 33b, and is an opening that communicates between the outside of the railway vehicle 1 and the space in the air passage where the outdoor fan 32 is provided. The inspection hatch 33c in the top cover 331 is provided with a removable lid and is configured to be able to open and close freely. Like the inspection hatch 33c in the top cover 331, the inspection hatch 33d in the end cover 333 is provided with a removable lid and is configured to be able to open and close freely. Note that the removable lid may be attached to the cover with screws, for example, and the lid removal mechanism is not limited to this.

[0026] The high-pressure washer 51 shown in FIG. 5 is a machine that removes dirt and cleans by spraying a high-pressure water stream. Dirt 52, consisting of dust particles such as dirt and dust, adheres to and accumulates on the outdoor heat exchanger 31 due to the flow of outside air. As the dirt 52 accumulates on the outdoor heat exchanger 31, the flow of outside air becomes more difficult, reducing the heat exchange efficiency of the outdoor heat exchanger 31. Therefore, a worker must periodically remove the dirt 52 using a cleaning tool such as the high-pressure washer 51. As shown in FIG. 5, the high-pressure washer 51 can be inserted through the inspection hatch 33c and clean the outdoor heat exchanger 31 from the outdoor blower 32 side. While the high-pressure washer 51 is described as an example of a cleaning tool, it is not limited to this. Examples of cleaning tools include brushes and devices that generate air jets to remove dirt with air. Examples of cleaning tools include cotton swabs to remove fine dirt between the fins, but are not limited to these examples.

[0027] FIG. 6 is an external perspective view of the exterior portion 3 of the vehicle air conditioning device 2 according to the first embodiment, with the cover 33 removed. The outdoor blower 32 shown in FIG. 6 is a simplified diagram, with blades and other components omitted. The housing 34 is box-shaped, with the upper side having a frame structure and not covered by a plate, leaving at least a portion open. The housing 34 also has an end panel 342 on the end side and two opposing side panels 341 on the side. The end panel 342 is provided with a housing inspection hatch 34a, which is an opening, at a position opposite the inspection hatch 33d in the end cover 333. The housing inspection hatch 34a in FIG. 6 is an opening that connects the space in which the outdoor blower 32 is installed, within the air passage partitioned by the outdoor heat exchanger 31, to the outside. The housing inspection hatch 34a is an opening without a lid, but may be provided with a removable lid, similar to the other inspection hatches 33c, etc.

[0028] FIG. 7 is a side perspective view showing a portion of the exterior portion 3 of the vehicle air conditioning apparatus 2 according to the first embodiment. In FIG. 7, the inspection hatch 33d in the end cover 333 and the housing inspection hatch 34a in the end panel 342 are both open as openings, allowing an operator to check the outdoor blower 32 and the outdoor heat exchanger 31 in the exterior portion 3 through the openings of the inspection hatch 33d and the housing inspection hatch 34a. Also, as shown in FIG. 7, an operator can insert a high-pressure washer 51 into the exterior portion 3 through the openings of the inspection hatch 33d and the housing inspection hatch 34a. Note that, in the vehicle air conditioning apparatus 2 according to the first embodiment, the housing 34 is configured to have the side panel 341 and the end panel 342. However, for example, the housing 34 may have a frame structure that does not have a plate surface of the end panel 342.

[0029] Next, the operation of the vehicle air conditioning device 2 according to the first embodiment will be described. To perform maintenance to remove dirt 52 adhering to the outdoor heat exchanger 31 of the vehicle air conditioning device 2, an operator opens part or all of the inspection hatch 33c in the top cover 331 while the outdoor blower 32 is not operating. Normally, the inspection hatch 33c is closed with a lid or the like, and the lid is secured with screws or the like. Therefore, to use the inspection hatch 33c, the operator needs to remove the screws or the like from the lid.

[0030] After opening the inspection hatch 33c in the top cover 331, the worker inserts, for example, a high-pressure washer 51 as a cleaning tool from the inspection hatch 33c into the space outside the room 3 where the outdoor blower 32 is provided. The worker points the blowing nozzle of the high-pressure washer 51 toward the dirt 52 on the outdoor heat exchanger 31 and starts the high-pressure washer 51. Because a high-pressure water stream is blown out from the high-pressure washer 51, the worker can use the high-pressure water stream to blow away and remove the dirt 52 on the outdoor heat exchanger 31 from the side where the outdoor blower 32 is provided.

[0031] Furthermore, an operator may insert the high-pressure washer 51 into the space outside the room 3 where the outdoor blower 32 is provided through the inspection hatch 33d in the end cover 333 and the housing inspection hatch 34a in the housing 34. The inspection hatch 33d in the end cover 333 is usually covered with a lid and secured with, for example, screws. Therefore, an operator must remove the screws or the like to open the lid of the inspection hatch 33d.

[0032] Alternatively, the worker may open the armor window 33e of the top cover 331 and insert the high-pressure washer 51 through the cover opening 33b. In this case, the worker can insert the high-pressure washer 51 into a space other than the space where the outdoor blower 32 is installed in the exterior 3. Therefore, the worker can clean any surface of the outdoor heat exchanger 31 with the high-pressure washer 51.

[0033] FIG. 8 shows a modified example of the exterior part 3 of the vehicle air conditioning apparatus 2 according to the first embodiment. In this modified example, at least one of the two opposing side covers 332b of the cover 33f is configured to be removable. The housing 34b also has an end panel 342 on the end side and two opposing side panels 341b on the side panels. Of the two opposing side panels 341b, the side panel 341b facing the openable side cover 332b is configured to be openable and closable. In FIG. 8, one side of the side cover 332b has been removed, and the side panel 341b facing the removed side cover 332b has been opened. With the side panel 341b open, a worker can clean the outdoor heat exchanger 31 with a cleaning tool.

[0034] FIG. 9 shows a modified example of the exterior portion 3 of the vehicle air conditioning apparatus 2 according to the first embodiment. In the modified example shown in FIG. 9, the side plate 341c of the housing 34c and the side cover 332c of the cover 33g are each configured to be openable and closable. The side plate 341c of the housing 34c may be formed integrally with the side cover 332c. That is, when at least one of the two opposing side covers 332c is configured to be openable and closable, the side plate 341c of the two opposing side plates 341c that faces the openable and closable side cover 332c is formed integrally with the openable and closable side cover 332c. By forming them integrally, when an operator opens the side cover 332c of the cover 33g, the side plate 341c that is integrated with the side cover 332c can open in conjunction with the openable and closable side cover 332c, improving workability.

[0035] FIG. 10 is a front view of a side plate 341c of a housing 34c in a modified example of the vehicle air conditioning device 2 according to the first embodiment. The side plate 341c shown in FIG. 10 includes a frame 3412, which is a framework and has a frame structure for increasing strength, a side plate cover 3413, and a hinge 3411 that connects the frame 3412 and the side plate cover 3413 and enables the side plate cover 3413 to be opened and closed. The side plate 341c is configured to be openable and closable by the side plate cover 3413 rotating via the hinge 3411. The side plate cover 3413 is also provided with an air vent 3414, and is made of aluminum to reduce weight. The side plate 341c of the housing 34c is longer than the end plate 342, and therefore may be configured as two or more divided side plate covers 3413. That is, the housing 34c is configured such that at least one of two opposing side plates 341c can be opened and closed, and the openable and closable side plate 341c is configured with a plurality of side plate covers 3413.

[0036] As described above, the vehicle air conditioning unit 2 in embodiment 1 comprises a housing 34, a cover 33 that forms an air passage when combined with the housing 34, an outdoor fan 32 provided within the air passage, and a plurality of outdoor heat exchangers 31 that are provided on both sides of the outdoor fan 32 to divide the air passage into a plurality of spaces and perform heat exchange between the refrigerant and the outside air outside the railway vehicle 1 that is sucked into the air passage by the outdoor fan 32, and the cover 33 is configured to have a plurality of cover openings 33a, 33b that are openings that connect the outside of the railway vehicle 1 to the air passage in each of the plurality of spaces, and inspection hatches 33c, 33d that are provided separately from the plurality of cover openings 33a, 33b and are openings that connect the outside of the railway vehicle 1 to the air passage in the space in which the outdoor fan 32 is provided among the plurality of spaces and are configured to be openable and closable.

[0037] Conventionally, when a worker cleaned the outdoor heat exchanger 31, the limited working space made cleaning difficult, and dirt on the outdoor heat exchanger 31 was difficult to remove, which could result in insufficient removal of dirt and reduced heat exchange efficiency. Furthermore, the limited space on the roof of the railway vehicle 1 made work difficult, and the cover 33 was heavy, requiring two or more people to remove it. There was also a risk that the worker would drop the removed cover 33 to the ground.

[0038] With this configuration, an operator can insert a cleaning tool from the inspection hatches 33c, 33d into the space in the exterior 3 where the outdoor blower 32 is provided, and therefore can efficiently remove dirt 52 from the outdoor heat exchanger 31 from the side where the outdoor blower 32 is provided. This prevents performance degradation of the outdoor heat exchanger 31, and ultimately prevents a decrease in the capacity of the vehicle air conditioning device 2. Furthermore, because an operator can perform cleaning by opening the inspection hatches 33c, 33d, there is no need to remove the cover 33 as in conventional cases, and therefore workability for the operator is improved.

[0039] In addition, in the vehicle air conditioning unit 2 in embodiment 1, the cover 33 is a cover that covers the housing 34, and is composed of an end cover 333 on the end side, two opposing side covers 332 on the side sides, and an upper cover 331 on the upper side, and it is also possible to configure at least one of the upper cover 331 and the end cover 333 to have inspection hatches 33c, 33d.

[0040] With this configuration, an operator can insert a cleaning tool from the inspection hatches 33c, 33d into the space in the exterior 3 where the outdoor blower 32 is provided, and therefore can efficiently remove dirt 52 from the outdoor heat exchanger 31 from the side where the outdoor blower 32 is provided. This prevents performance degradation of the outdoor heat exchanger 31, and ultimately prevents a decrease in the capacity of the vehicle air conditioning device 2. Furthermore, because an operator can perform cleaning by opening the inspection hatches 33c, 33d, there is no need to remove the cover 33 as in conventional cases, and therefore workability for the operator is improved.

[0041] In addition, in the vehicle air conditioning unit 2 in embodiment 1, the housing 34 is box-shaped with at least a portion of the top side open, and has a end panel 342 on the end side and two opposing side panels 341 on the side sides, and when the inspection hatch 33c is provided in the end cover 333, an opening, the housing inspection hatch 34a, can be provided in the end panel 342 at a position opposite the inspection hatch 33d in the end cover 333.

[0042] With this configuration, a worker can insert a cleaning tool into the space of the exterior 3 where the outdoor blower 32 is installed through the inspection hatch 33d, allowing for efficient removal of dirt 52 from the outdoor heat exchanger 31 from the side where the outdoor blower 32 is installed. This prevents performance degradation of the outdoor heat exchanger 31 and, ultimately, a decrease in the capacity of the vehicle air conditioner 2. Furthermore, because cleaning can be performed by simply opening the inspection hatch 33d, there is no need to remove the cover 33 as in the past, improving the worker's workability. Furthermore, during the manufacturing process of the vehicle air conditioner 2, the housing 34 is generally delivered in an assembled state. During the manufacturing process of the vehicle air conditioner 2, a worker can insert their hand into the exterior 3 through the housing inspection hatch 34a. This makes it easier for the worker to install the outdoor heat exchanger 31, particularly to braze the outdoor heat exchanger 31 to the refrigerant piping, improving the manufacturability of the vehicle air conditioner 2.

[0043] Furthermore, in the vehicle air conditioning device 2 in embodiment 1, at least one of the two opposing side covers 332b is removable or openable, and the housing 341b is box-shaped with at least a portion of the top side open, and has an end panel 342 on the end side and two opposing side panels 341b on the side sides, and the two opposing side panels 341b are configured so that the side panel 341b facing the removable or openable side cover 332b of the two opposing side covers 332b can be opened and closed.

[0044] With this configuration, the side cover 332b is removable or openable, and the side plate 341b is openable. Therefore, when an operator removes dirt 52 from the outdoor heat exchanger 31, the operator can easily clean the outdoor heat exchanger 31 with a cleaning tool not only from the side where the outdoor blower 32 is installed, but also from the side opposite the side where the outdoor blower 32 is installed. In other words, the operator can remove dirt 52 from both sides of the outdoor heat exchanger 31, more reliably removing the dirt 52. This reduces performance degradation of the outdoor heat exchanger 31 compared to conventional methods.

[0045] Furthermore, in the vehicle air conditioning unit 2 in embodiment 1, when at least one of the two opposing side covers 332c is configured to be openable and closable, the housing 34c can also be configured such that the side plate 341c facing the openable and closable side cover 332c, out of the two opposing side plates 341c, is formed integrally with the openable and closable side cover 332c.

[0046] With this configuration, when cleaning the outdoor heat exchanger 31, the worker can open and close the side panel 341c and the side cover 332c together, which improves work efficiency compared to opening and closing them separately.

[0047] In addition, in the vehicle air conditioning device 2 in embodiment 1, the housing 34c is configured so that at least one of the two opposing side panels 341c can be opened and closed, and the openable and closable side panel 341c can also be configured so that it is composed of multiple side panel covers 3413.

[0048] According to this configuration, since the side panel covers 3413 are configured to be two or more, the worker only needs to open a part of the side panel covers 3413 according to the area to be cleaned, thereby improving work efficiency.

[0049] Furthermore, in the vehicle air conditioning device 2 in embodiment 1, the multiple cover openings 33a, 33b may be configured so that the cover opening 33b provided in a space other than the space in which the outdoor blower 32 is provided can be opened and closed.

[0050] With this configuration, when cleaning the outdoor heat exchanger 31, the worker can clean the surface of the outdoor heat exchanger 31 on the side where the outdoor blower 32 is installed through the inspection hatches 33c, 33d, and then clean the surface of the outdoor heat exchanger 31 on the side opposite the side where the outdoor blower 32 is installed through the cover opening 33b. In other words, the worker can clean both sides of the surface of the outdoor heat exchanger 31. Therefore, compared to cleaning one side of the surface of the outdoor heat exchanger 31, the worker can remove more of the dirt 52 from the outdoor heat exchanger 31, which prevents performance degradation of the outdoor heat exchanger 31 and, ultimately, prevents a decrease in the capacity of the vehicle air conditioning device 2.

[0051] Furthermore, in the vehicle air conditioning device 2 according to the first embodiment, the cover 33 may be configured to have louvered windows 33e in which the plurality of cover openings 33b are formed of openable and closable shutters.

[0052] With this configuration, outside air can flow in and out through the cover opening 33b, while preventing foreign matter larger than the gap in the shutters from entering the outside room 3 and damaging the outdoor heat exchanger 31.

[0053] It should be noted that the present disclosure allows the disclosed contents to be freely combined, modified, or omitted as appropriate within the scope of the disclosure. Furthermore, although the embodiments of the present disclosure have been described above, the present disclosure is not limited to these embodiments. [Explanation of symbols]

[0054] 1 Railway vehicle, 2 Vehicle air conditioning device, 31 Outdoor heat exchanger, 32 Outdoor blower, 33, 33f, 33g Cover, 33a, 33b Cover opening, 33c, 33d Inspection hatch, 33e Armor window, 34, 34b, 34c Housing, 34a Housing inspection hatch, 331 Top cover, 332, 332b, 332c Side cover, 333 End cover, 341, 341b, 341c Side panel, 342 End panel, 3413 Side panel cover

Claims

1. The housing and a cover that covers the housing, has an upper surface cover on an upper surface side, and forms an air passage when combined with the housing; a blower provided in the air passage; a plurality of heat exchangers provided on both sides of the blower so as to divide the air passage into a plurality of spaces, and performing heat exchange between the refrigerant and the outside air outside the vehicle drawn into the air passage by the blower; Equipped with The cover has a plurality of cover openings in each of the plurality of spaces, which are openings that communicate the outside of the vehicle with the air passage, and an inspection hatch that is provided in the top cover separately from the plurality of cover openings and communicates the outside of the vehicle with the space in which the blower is provided, and is configured to be openable and closable.

1. A vehicle air conditioning system comprising:

2. A box-shaped housing with at least a portion of the top surface open, having a gable plate on the gable side and two opposing side plates on the side surfaces; a cover that covers the housing, and is composed of a gable cover on the gable side, two opposing side covers on the side sides, and a top cover on the top side, and forms an air passage when combined with the housing; a blower provided in the air passage; a plurality of heat exchangers provided on both sides of the blower so as to divide the air passage into a plurality of spaces, and performing heat exchange between the refrigerant and the outside air outside the vehicle drawn into the air passage by the blower; Equipped with The cover has a plurality of cover openings in each of the plurality of spaces, which are openings that communicate the outside of the vehicle with the air passage, and an inspection hatch that is provided in at least one of the top cover and the end cover and communicates the outside of the vehicle with the space in which the blower is provided, and is configured to be openable and closable, separate from the plurality of cover openings, At least one of the two opposing side covers is removable or openable, The two opposing side plates are configured so that the side plate facing the removable or openable side cover of the two opposing side covers is openable.

1. A vehicle air conditioning system comprising:

3. When the inspection hatch is provided in the end cover, the housing has a housing inspection hatch that is an opening provided in the end plate at a position opposite the inspection hatch in the end cover.

3. The vehicle air conditioning system according to claim 2.

4. When at least one of the two opposing side covers is configured to be openable and closable, the side plate of the two opposing side plates that faces the openable and closable side cover is formed integrally with the openable and closable side cover.

3. The vehicle air conditioning system according to claim 2.

5. The housing is configured such that at least one of the two opposing side plates is openable and closable; The openable side panel is made up of a plurality of side panel covers.

3. The vehicle air conditioning system according to claim 2.

6. The plurality of cover openings are configured so that cover openings provided in spaces other than the space in which the blower is provided can be opened and closed.

6. The vehicle air conditioning system according to claim 1, wherein the vehicle air conditioning system comprises: a first air conditioning unit;

7. The cover has a plurality of cover openings each having a shutter window.

7. The vehicle air conditioning system according to claim 1, wherein the vehicle air conditioning system comprises: a first air conditioning unit;

8. The vehicle is a railroad vehicle.

8. The vehicle air conditioning system according to claim 1, wherein the vehicle air conditioning system comprises: a first air conditioning unit;

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