Heat source unit

Abstract

To improve maintainability of a heat source unit.SOLUTION: A heat source unit (1) includes: a plurality of housing parts (42) arranged side by side; and air heat exchangers(12A, 12B, 12C, 12D) provided at each of the plurality of housing parts (42). A first housing part (42A) which is the housing part (42) of any one of the plurality of housing parts (42) includes a first partition plate (Fe2) which includes a first plate part (Fe21) and a second plate part (Fe22). The first plate part (Fe21) opposes to a second direction perpendicular with respect to a first direction which is the direction in which the plurality of housing parts (42) is arrayed with respect to an internal space (S2A) of the first housing part (42A), and is fastened to frames (Fa5, Fa6) of the first housing part (42A). The second plate part (Fe22) opposes to the first direction with respect to the internal space (S2A) of the first housing part (42A).SELECTED DRAWING: Figure 8

Description

Technical Field

[0006] , ,

[0005] , , ,

[0007] , , ,

[0001] The present disclosure relates to a heat source unit.

Background Art

[0002] A heat source unit for generating cold water is known.

[0003] The heat source unit of Patent Document 1 includes an air heat exchanger that exchanges heat between a refrigerant and outside air, a housing portion in which the air heat exchanger is provided, a refrigerant circuit that performs a refrigeration cycle, and a water heat exchanger that exchanges heat between the refrigerant in the refrigerant circuit and water. In the heat source unit of Patent Document 1, a plurality of housing portions are arranged side by side.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When removing the partition plate, which is an outer plate, from the housing portion and performing maintenance inside the housing portion, the adjacent housing portion gets in the way, and the operation of removing the partition plate from the housing portion becomes complicated, which may reduce the maintainability of the heat source unit.

[0006] The present disclosure aims to improve the maintainability.

Means for Solving the Problems

[0007] The first embodiment relates to a heat source unit. The heat source unit comprises a plurality of housing sections (42) arranged in a row, and air heat exchangers (12A, 12B, 12C, 12D) provided in each of the plurality of housing sections (42). A first housing section (42A), which is one of the plurality of housing sections (42), comprises a first partition plate (Fe2) including a first plate section (Fe21) and a second plate section (Fe22). The first plate section (Fe21) faces the internal space (S2A) of the first housing section (42A) in a second direction perpendicular to the first direction in which the plurality of housing sections (42) are arranged, and is fastened to the frame (Fa5, Fa6) of the first housing section (42A). The second plate section (Fe22) faces the internal space (S2A) of the first housing section (42A) in the first direction.

[0008] In the first embodiment, when removing the first partition plate (Fe2) from the first housing portion (42A) to perform maintenance work on the internal space (S2A) of the first housing portion (42A), the first plate portion (Fe21) faces the internal space (S2A) in the second direction, allowing the removal of the first partition plate (Fe2) to be performed from the second direction side. This suppresses interference with adjacent housing portions (42) along the first direction when removing the first partition plate (Fe2), thereby improving maintainability.

[0009] In the second embodiment, the second plate portion (Fe22) has a shape that extends from the first plate portion (Fe21) toward one direction in the second direction, and the first plate portion (Fe21) is detachably fastened to the frame (Fa5, Fa6) of the first housing portion (42A) from the other direction in the second direction.

[0010] In the second embodiment, when attaching or detaching the first plate portion (Fe21) of the first partition plate (Fe2) to the frame (Fa5, Fa6) of the first housing portion (42A), the first plate portion (Fe21) can be attached or detached from the other side of the second direction, thereby suppressing interference with adjacent housing portions (42) along the first direction, and allowing the first plate portion (Fe21) to be easily attached or detached.

[0011] A third embodiment, in the first or second embodiment, comprises fans (5A, 5B) positioned on one side of the internal space (S2A) in a third direction perpendicular to the first and second directions, wherein the first housing portion (42A) includes a column portion (Fc2) that supports the fans (5A, 5B) or the housing (43A) in which the fans (5A, 5B) are housed from the other side of the third direction, and the second plate portion (Fe22) is attached to the column portion (Fc2).

[0012] In the third embodiment, the second plate portion (Fe22) is attached to the column portion (Fc2), and the column portion (Fc2) and the second plate portion (Fe22) are brought into contact, thereby separating the internal space (S2A) of the first housing portion (42A) from the outside of the first housing portion (42A) by the column portion (Fc2) and the second plate portion (Fe22).

[0013] A fourth aspect is the third aspect, wherein the second plate portion (Fe22) faces the column portion (Fc2) in the second direction, and a first engaging portion (Fe22c) is provided on the surface of the second plate portion (Fe22) facing the column portion (Fc2), and a second engaging portion (Fc21) that engages with the first engaging portion (Fe22c) is provided on the surface of the column portion (Fc2) facing the second plate portion (Fe22).

[0014] In the fourth embodiment, the second plate portion (Fe22) can be attached to the column portion (Fc2) by the first engaging portion (Fe22c) engaging with the second engaging portion (Fc21).

[0015] A fifth aspect is the air heat exchanger (12A) of the first housing portion (42A) being inclined with respect to the third direction, and the first plate portion (Fe21) of the first partition plate (Fe2) extending along the inclination direction of the air heat exchanger (12A) of the first housing portion (42A).

[0016] In the fifth embodiment, the first plate portion (Fe21) of the first partition plate (Fe2) can be fastened to the first housing portion (42A) in accordance with the inclination of the air heat exchanger (12A).

[0017] The sixth aspect is the fifth aspect, wherein the column portion (Fc2) has a shape that extends along the third direction, and the second plate portion (Fe22) has a smaller dimension in the second direction as it moves toward the other direction of the third direction.

[0018] In the sixth embodiment, the second plate portion (Fe22) can be attached to the column portion (Fc2) by aligning the surface of the second plate portion (Fe22) facing the column portion (Fc2) with the column portion (Fc2).

[0019] The seventh embodiment is one of the third to sixth embodiments, in which the air heat exchanger (12A) of the first housing portion (42A), the first partition plate (Fe2), and the column portion (Fc2) are arranged along the first direction in the order of the air heat exchanger (12A) of the first housing portion (42A), the first partition plate (Fe2), and the column portion (Fc2).

[0020] In the seventh embodiment, in the first direction, the first partition plate (Fe2) is not positioned outside the column portion (Fc2) (towards the adjacent housing portion (42)), thereby securing a space between the first partition plate (Fe2) and the adjacent housing portion (42), and effectively securing a workspace for attaching and detaching the first partition plate (Fe2).

[0021] The eighth aspect is that, in any one of the first to seventh aspects, the air heat exchanger (12A, 12B, 12C, 12D) has an L-shape.

[0022] In the eighth aspect, heat exchange between the refrigerant and air can be performed using an L-shaped air heat exchanger.

[0023] The ninth aspect is that, in any one of the first to eighth aspects, a thermistor is provided in the internal space (S2A) of the first housing portion (42A), and the thermistor is located at a place visible from the outside of the first housing portion (42A) in a state where the first partition plate (Fe2) is removed from the first housing portion (42A).

[0024] In the ninth aspect, the maintainability of the thermistor can be improved.

[0025] The tenth aspect is that, in any one of the first to ninth aspects, the plurality of housing portions (42) includes a second housing portion (42B) adjacent to the first housing portion (42A) in the first direction, and the second housing portion (42B) has a second partition plate (Fe1) facing the internal space (S2B) of the second housing portion (42B) and facing the first direction and the second direction, and the first partition plate (Fe2) and the second partition plate (Fe1) face each other in the first direction.

[0026] In the tenth aspect, even when the first partition plate (Fe2) and the second partition plate (Fe1) face each other in the first direction, since the first partition plate (Fe2) (the first plate portion (Fe21)) can be detached from the other direction side in the second direction, it is possible to suppress interference with the second partition plate (Fe1) when the first partition plate (Fe2) is detached, and the maintainability can be improved.

[0027] The eleventh aspect is that, in any one of the first to tenth aspects, the first plate portion (Fe21) forms an air suction port (I1) into the internal space (S2A) of the first housing portion (42A).

[0028] In the eleventh embodiment, since the first plate portion (Fe21) and the suction port (I1) are adjacent to each other, maintenance around the suction port (I1) can be easily performed by removing the first partition plate (Fe2) from the first housing portion (42A).

[0029] In the twelfth embodiment, in any one of the first to eleventh embodiments, the first partition plate (Fe2) is positioned on the movement trajectory of the maintenance component when the maintenance component, which is located in the internal space (S2A) of the first housing portion (42A), is removed to the outside of the first housing portion (42A).

[0030] In the twelfth embodiment, maintenance parts can be easily removed from the internal space (S2A) of the first housing portion (42A) by removing the first partition plate (Fe2). [Brief explanation of the drawing]

[0031] [Figure 1] Figure 1 is a piping diagram of the heat source unit in the embodiment. [Figure 2] Figure 2 is a perspective view showing the external appearance of the heat source unit. [Figure 3] Figure 3 is a front view of the heat source unit. [Figure 4] Figure 4 is a rear view of the heat source unit. [Figure 5] Figure 5 is a left-side view of the heat source unit. [Figure 6] Figure 6 is a cross-sectional view of line AA in Figure 3. [Figure 7] Figure 7 is a cross-sectional view of line BB in Figure 5. [Figure 8] Figure 8 is a schematic diagram showing the positional relationship of the components of the housing when viewed from above. [Figure 9] Figure 9 is a perspective view of the first partition plate. [Figure 10] Figure 10 is a perspective view of the second partition plate. [Figure 11] Figure 11 is a perspective view showing the fastening process of the second partition plate of the first housing. [Figure 12] Figure 12 is a perspective view showing the fastening process of the second partition plate of the first housing. [Figure 13] Figure 13 is a perspective view showing the fastening process of the first partition plate of the second housing. [Figure 14] Figure 14 is a perspective view showing the fastening process of the first partition plate of the second housing. [Figure 15] Figure 15 is a piping diagram of a modified example of the heat source unit. [Figure 16] Figure 16 is a perspective view showing the external appearance of a modified heat source unit. [Figure 17] Figure 17 is a schematic diagram showing the positional relationship of the components of the housing when viewed from above in a modified example of the heat source unit. [Modes for carrying out the invention]

[0032] The embodiments of this disclosure will be described in detail below with reference to the drawings. However, this disclosure is not limited to the embodiments shown below, and various modifications are possible without departing from the technical idea of ​​this disclosure. Since the drawings are for conceptual explanation of this disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for ease of understanding.

[0033] (1) Overview The heat source unit (1) according to this embodiment is used as a heat source for an air conditioning system. The air conditioning system provides air conditioning for offices, shopping malls, factories, etc. The heat source unit (1) is a chilling unit dedicated to cooling that generates chilled water. The heat source unit (1) is an air-cooled chilling unit.

[0034] (2) Configuration of the refrigerant circuit The heat source unit (1) of this embodiment has a plurality of refrigerant circuits (10). As shown in Figure 1, the heat source unit (1) of this example has a first refrigerant circuit (10A), a second refrigerant circuit (10B), a third refrigerant circuit (10C), and a fourth refrigerant circuit (10D). The number of refrigerant circuits (10) is merely an example and may be one, two, three, or five or more. The basic configuration of the first refrigerant circuit (10A), the second refrigerant circuit (10B), the third refrigerant circuit (10C), and the fourth refrigerant circuit (10D) is the same. In Figure 1, for convenience, the details of the third refrigerant circuit (10C) and the fourth refrigerant circuit (10D) are omitted. Each refrigerant circuit (10) is filled with refrigerant. Each refrigerant circuit (10) performs a vapor compression type refrigeration cycle by circulating the refrigerant.

[0035] The first refrigerant circuit (10A) mainly comprises a first compressor (11A), a first air heat exchanger (12A), and a first expansion valve (13A). The first refrigerant circuit (10A) also comprises a first subcooling heat exchanger (14A) and a first accumulator (15A).

[0036] The first compressor (11A) compresses the inhaled refrigerant and discharges the compressed refrigerant. The first compressor (11A) is, for example, a scroll compressor, but may be other types of compressors such as screw, turbo, or rotary compressors. The first air heat exchanger (12A) is an outdoor heat exchanger that exchanges heat between the refrigerant and the outdoor air. The first air heat exchanger (12A) is a fin-and-tube type heat exchanger. In this example, the first air heat exchanger (12A) functions only as a heat exchanger (condenser) that releases heat from the refrigerant. The first expansion valve (13A) reduces the pressure of the refrigerant after condensation. The first expansion valve (13A) is, for example, an electronic expansion valve. The first subcooling heat exchanger (14A) cools the refrigerant after heat release and increases the degree of subcooling of the refrigerant. The first subcooling heat exchanger (14A) exchanges heat between the refrigerant in the first liquid channel (L1) and the refrigerant in the second liquid channel (L2).

[0037] The refrigerant circuit (10) comprises a discharge pipe (20), a liquid pipe (21), an injection pipe (22), a gas pipe (23), and an intake pipe (24) as elements constituting the refrigerant piping. The discharge pipe (20) connects the discharge side of the first compressor (11A) to the gas end of the first air heat exchanger (12A). The liquid pipe (21) connects the gas end of the first air heat exchanger (12A) to the inlet end of the first refrigerant flow path (R1) of the first water heat exchanger (31). One end of the injection pipe (22) is connected to the upstream portion of the first subcooled heat exchanger (14A) in the liquid pipe (21). The other end of the injection pipe (22) is connected to the intermediate pressure section (during compression) of the first compressor (11A). A cooling expansion valve (25) is provided in the injection pipe (22) on the upstream side of the first subcooled heat exchanger (14A). The gas pipe (23) connects the outlet end of the first refrigerant flow path (R1) of the first water heat exchanger (31) to the first accumulator (15A). The suction pipe (24) connects the first accumulator (15A) to the suction side of the first compressor (11A).

[0038] The elements of the second refrigerant circuit (10B), the third refrigerant circuit (10C), and the fourth refrigerant circuit (10D) are basically the same as those of the first refrigerant circuit (10A).

[0039] The second refrigerant circuit (10B) mainly comprises a second compressor (11B), a second air heat exchanger (12B), and a second expansion valve (13B). The second refrigerant circuit (10B) also comprises a second subcooling heat exchanger (14B) and a second accumulator (15B). The liquid pipe (21) of the second refrigerant circuit (10B) connects the gas end of the second air heat exchanger (12B) to the inlet end of the second refrigerant flow path (R2) of the first water heat exchanger (31). The gas pipe (23) of the second refrigerant circuit (10B) connects the outlet end of the second refrigerant flow path (R2) of the first water heat exchanger (31) to the second accumulator (15B).

[0040] The third refrigerant circuit (10C) mainly comprises a third compressor (11C), a third air heat exchanger (12C), and a third expansion valve (13C). The third refrigerant circuit (10C) also comprises a third subcooling heat exchanger (14C) and a third accumulator (15C). The liquid pipe (21) of the third refrigerant circuit (10C) connects the gas end of the third air heat exchanger (12C) to the inlet end of the third refrigerant flow path (R3) of the second water heat exchanger (32). The gas pipe (23) of the third refrigerant circuit (10C) connects the outlet end of the third refrigerant flow path (R3) of the second water heat exchanger (32) to the third accumulator (15C).

[0041] The fourth refrigerant circuit (10D) mainly comprises a fourth compressor (11D), a fourth air heat exchanger (12D), and a fourth expansion valve (13D). The fourth refrigerant circuit (10D) also comprises a fourth subcooling heat exchanger (14D) and a fourth accumulator (15D). The liquid pipe (21) of the fourth refrigerant circuit (10D) connects the gas end of the fourth air heat exchanger (12D) to the inlet end of the fourth refrigerant flow path (R4) of the second water heat exchanger (32). The gas pipe (23) of the fourth refrigerant circuit (10D) connects the outlet end of the fourth refrigerant flow path (R4) of the second water heat exchanger (32) to the fourth accumulator (15D).

[0042] (3) Water circuit As shown in Figure 1, the heat source unit (1) has a water circuit (30) through which water flows. A pump (33), a first water heat exchanger (31), and a second water heat exchanger (32) are connected to the water circuit (30) in order from the upstream side to the downstream side of the water flow. The pump (33) transports the water in the water circuit (30). The first water heat exchanger (31) and the second water heat exchanger (32) are, for example, plate-type heat exchangers. The first water heat exchanger (31) and the second water heat exchanger (32) exchange heat between the refrigerant and the water. The first water heat exchanger (31) and the second water heat exchanger (32) are counterflow type heat exchangers.

[0043] The first water heat exchanger (31) has a first water channel (W1), a first refrigerant channel (R1), and a second refrigerant channel (R2). The first water channel (W1) is connected to the water circuit (30), the first refrigerant channel (R1) is connected to the first refrigerant circuit (10A), and the second refrigerant channel (R2) is connected to the second refrigerant circuit (10B). The first water heat exchanger (31) exchanges heat between the water in the first water channel (W1) and the refrigerant in the first refrigerant circuit (10A). The first water heat exchanger (31) exchanges heat between the water in the first water channel (W1) and the refrigerant in the second refrigerant circuit (10B).

[0044] The second water heat exchanger (32) has a second water channel (W2), a third refrigerant channel (R3), and a fourth refrigerant channel (R4). The second water channel (W2) is connected to the water circuit (30), the third refrigerant channel (R3) is connected to the third refrigerant circuit (10C), and the fourth refrigerant channel (R4) is connected to the fourth refrigerant circuit (10D). The second water heat exchanger (32) exchanges heat between the water in the second water channel (W2) and the refrigerant in the third refrigerant circuit (10C). The second water heat exchanger (32) exchanges heat between the water in the second water channel (W2) and the refrigerant in the fourth refrigerant circuit (10D).

[0045] (4) Structure of the heat source unit The detailed configuration of the heat source unit (1) will be explained with reference to Figures 2 to 7. In the following explanation, the terms "front," "back," "right," "left," "up," and "down" refer to the directions indicated by the arrows in Figure 2. In the following explanation, the first direction corresponds to the horizontal left-right direction, the second direction corresponds to the horizontal front-back direction, and the third direction corresponds to the vertical up-down direction.

[0046] (4-1) Casing The heat source unit (1) has a hollow casing (40). The casing (40) is formed to be horizontally elongated, with its length in the left-right direction (first direction) being greater than its length in the front-back direction (second direction). As shown in Figure 5, when viewed from the first direction, the casing (40) has a shape in which the width of its upper part in the front-back direction is widened.

[0047] The casing (40) has a lower housing portion (41) and an upper housing portion (42). The upper housing portion (42) is an example of a housing portion. The lower housing portion (41) includes the lower end of the casing (40). The upper housing portion (42) includes the upper end of the casing (40) and is located above the lower housing portion (41). A machine room (S1) is formed inside the lower housing portion (41). A blower room (S2) is formed inside the upper housing portion (42). The lower housing portion (41) has a main body portion (41a) having a rectangular parallelepiped shape and an extension portion (41b) extending outward in a first direction (to the right) from the right end of the main body portion (41a).

[0048] The casing (40) has a plurality of frames and a plurality of outer panels that are detachably attached to the plurality of frames. The plurality of frames are a framework for fixing the outer panels of the casing (40). The plurality of frames constitute columns or beams. The plurality of frames function as reinforcing members that reinforce the casing (40). The outer panels shield the inside and outside of the casing (40). The frames and outer panels are made of metal materials such as iron or aluminum.

[0049] As shown in Figures 2 to 4, the lower housing (41) has a frame consisting of a first transverse frame (Fa1), a second transverse frame (Fa2), a third transverse frame (Fa3), and a fourth transverse frame (Fa4). These transverse frames are formed in the shape of elongated plates extending in a first direction. In other words, the first direction is the longitudinal direction of these transverse frames. The first transverse frame (Fa1) is located at the lower end of the front surface of the lower housing (41). The second transverse frame (Fa2) is located at the upper end of the front surface of the lower housing (41). The third transverse frame (Fa3) is located at the lower end of the rear surface of the lower housing (41). The fourth transverse frame (Fa4) is located at the upper end of the rear surface of the lower housing (41).

[0050] The lower housing (41) has a frame consisting of a plurality of first vertical frames (Fb1) and a plurality of second vertical frames (Fb2). These vertical frames are formed in the shape of long plates extending in a third direction which is the vertical direction. In other words, these vertical frames have the third direction as their longitudinal direction. The first vertical frames (Fb1) are located on the front surface of the casing (40) and are formed extending from the first horizontal frame (Fa1) to the second horizontal frame (Fa2). The second vertical frames (Fb2) are located on the rear surface of the casing (40) and are formed extending from the first horizontal frame (Fa1) to the second horizontal frame (Fa2).

[0051] The lower housing section (41) has a plurality of lower front plates (P1) and a plurality of lower rear plates (P2) as outer plates. The lower front plates (P1) and lower rear plates (P2) are formed in the shape of rectangular plates. The lower front plates (P1) are located on the front surface of the lower housing section (41). The lower front plates (P1) are detachably attached to the first horizontal frame (Fa1), the second horizontal frame (Fa2), and the first vertical frame (Fb1). The lower rear plates (P2) are located on the rear surface of the lower housing section (41). The lower rear plates (P2) are detachably attached to the third horizontal frame (Fa3), the fourth horizontal frame (Fa4), and the second vertical frame (Fb2).

[0052] The upper housing section (42) includes a plurality of housing sections. The plurality of housing sections are arranged side by side along the left-right direction. Each of the plurality of housing sections has the same structure as the others. In this embodiment, the plurality of housing sections includes a first housing section (42A) and a second housing section (42B). The second housing section (42B) is located to the right of the first housing section (42A). Hereinafter, the internal space of the first housing section (42A) may be referred to as the first blower room (S2A), and the internal space of the second housing section (42B) may be referred to as the second blower room (S2B). The first blower room (S2A) is the left portion of the blower room (S2), and the second blower room (S2B) is the right portion of the blower room (S2).

[0053] A first intake port (I1) is formed at the front of the first housing section (42A), connecting the first blower chamber (S2A) to the outside of the first housing section (42A). A first air heat exchanger (12A) is positioned at the first intake port (I1). A second intake port (I2) is formed at the front of the second housing section (42B), connecting the second blower chamber (S2B) to the outside of the second housing section (42B). A second air heat exchanger (12B) is positioned at the second intake port (I2). A third intake port (I3) is formed at the rear of the first housing section (42A), connecting the first blower chamber (S2A) to the outside of the first housing section (42A). A third air heat exchanger (12C) is positioned at the third intake port (I3). A fourth intake port (I4) is formed at the rear of the second housing section (42B), connecting the second blower chamber (S2B) to the outside of the second housing section (42B). A fourth air heat exchanger (12D) is positioned at the fourth intake port (I4).

[0054] As shown in Figure 6, the casing (40) has a first reinforcing frame (FR1) and a second reinforcing frame (FR2). These reinforcing frames (FR1, FR2) are located at the connection between the lower housing section (41) and the upper housing section (42). These reinforcing frames extend along the left-right direction (first direction). In other words, these reinforcing frames have the first direction as their longitudinal direction. The first reinforcing frame (FR1) is located on the front side of the casing (40). The first reinforcing frame (FR1) extends from the left end to the right end of the upper housing section (42). The second reinforcing frame (FR2) is located on the rear side of the casing (40). The second reinforcing frame (FR2) extends from the left end to the right end of the upper housing section (42).

[0055] As shown in Figures 2 to 4, the casing (40) has an upper cover (43) that constitutes its upper part. The upper cover (43) is formed in the shape of a hollow rectangular prism with an open bottom. Multiple outlets are formed on the upper surface of the upper cover (43). Each outlet is formed in the shape of a circle. The multiple outlets are arranged in a line in the first direction. On the upper surface of the upper cover (43) in this example, the first outlet (O1), second outlet (O2), third outlet (O3), and fourth outlet (O4) are formed in order from the left end to the right end.

[0056] As shown in Figure 6, the casing (40) has a bottom plate (44) that forms its lower surface. The bottom plate (44) is formed in the shape of a rectangular plate. The bottom plate (44) forms the bottom surface of the machine room (S1).

[0057] An intermediate plate (45) is formed inside the casing (40). The intermediate plate (45) is formed in the shape of a rectangular plate. The intermediate plate (45) divides the internal space of the casing (40) vertically. The space below the intermediate plate (45) is the machine room (S1), and the space above the intermediate plate (45) is the blower room (S2). The intermediate plate (45) constitutes the bottom surface of the blower room (S2). The intermediate plate (45) includes a first intermediate plate (45A) and a second intermediate plate (45B). The first intermediate plate (45A) is the left portion of the intermediate plate (45). The second intermediate plate (45B) is the right portion of the intermediate plate (45).

[0058] As shown in Figure 2, the first fan (5A), second fan (5B), third fan (5C), and fourth fan (5D) are arranged in the upper space of the blower room (S2). The first fan (5A) is located below the first outlet (O1), the second fan (5B) below the second outlet (O2), the third fan (5C) below the third outlet (O3), and the fourth fan (5D) below the fourth outlet (O4). These fans are propeller fans.

[0059] The upper cover (43) constitutes a housing that accommodates the first fan (5A), the second fan (5B), the third fan (5C), and the fourth fan (5D). The upper cover (43) includes a first upper cover (43A) that houses the first fan (5A) and the second fan (5B), and a second upper cover (43B) that houses the third fan (5C) and the fourth fan (5D). The second upper cover (43B) is positioned to the right of the first upper cover (43A). A first air outlet (O1) and a second air outlet (O2) are formed on the upper surface of the first upper cover (43A), and a third air outlet (O3) and a fourth air outlet (O4) are formed on the upper surface of the second upper cover (43B). The first upper cover (43A) is positioned above the first housing section (42A) and is fixed to the first housing section (42A). The internal space of the first upper cover (43A) communicates with the first blower chamber (S2A). The second upper cover (43B) is positioned above the second housing section (42B) and is fixed to the second housing section (42B). The internal space of the second upper cover (43B) communicates with the second blower chamber (S2B).

[0060] (4-2) Configuration of each piece of equipment in the machine room As shown in Figure 7, the machine room (S1) is arranged in order from left to right as follows: the first unit (U1), the second unit (U2), the third unit (U3), and the fourth unit (U4). The first unit (U1) includes the components of the first refrigerant circuit (10A) and the first electrical components box (6A) for controlling each component. The components of the first refrigerant circuit (10A) include the first compressor (11A), the first accumulator (15A), and the first subcooling heat exchanger (14A). Similarly, the second unit (U2) includes a second compressor (11B), a second accumulator (15B), a second subcooling heat exchanger (14B), and a second electrical component box (6B); the third unit (U3) includes a third compressor (11C), a third accumulator (15C), a third subcooling heat exchanger (14C), and a third electrical component box (6C); and the fourth unit (U4) includes a fourth compressor (11D), a fourth accumulator (15D), a fourth subcooling heat exchanger (14D), and a fourth electrical component box (6D).

[0061] The first compressor (11A), the second compressor (11B), the third compressor (11C), and the fourth compressor (11D) are arranged side by side in the first direction. These compressors (11A, 11B, 11C, 11D) are located towards the front of the casing (40). The first accumulator (15A), the second accumulator (15B), the third accumulator (15C), and the fourth accumulator (15D) are arranged side by side in the first direction. These accumulators are located in the middle of the casing (40) in the second direction. The first supercooled heat exchanger (14A), the second supercooled heat exchanger (14B), the third supercooled heat exchanger (14C), and the fourth supercooled heat exchanger (14D) are arranged side by side in the first direction. These supercooled heat exchangers are located towards the front of the casing (40). Each electrical component box houses an inverter device for adjusting the rotational speed of the corresponding compressor (11A, 11B, 11C, 11D). These electrical component boxes are arranged in a line in the first direction. These electrical component boxes are located towards the rear of the casing (40).

[0062] The machine room (S1) contains a first water heat exchanger (31), a second water heat exchanger (32), and a pump (33). The first water heat exchanger (31), the second water heat exchanger (32), and the pump (33) are positioned towards the other end (right end) in the first direction of the machine room (S1). The first water heat exchanger (31) is positioned towards the rear of the casing (40), and the second water heat exchanger (32) is positioned towards the front of the casing (40). The first water heat exchanger (31) and the second water heat exchanger (32) are positioned side by side in the second direction. The pump (33) is positioned to the right of the first water heat exchanger (31). The first water heat exchanger (31) and the pump (33) are positioned side by side in the first direction.

[0063] The heat source unit (1) has an operator-side electrical equipment box (7) and a pump-side electrical equipment box (8). The operator-side electrical equipment box (7) is located at one end (left end) in the first direction of the machine room (S1). The operator-side electrical equipment box (7) houses a control board for switching the operation of the heat source unit (1). The pump-side electrical equipment box (8) is located at the other end (right end) in the first direction of the machine room (S1). The pump-side electrical equipment box (8) is located towards the front of the casing (40). The pump (33) and the pump-side electrical equipment box (8) are located side by side in the second direction. The pump-side electrical equipment box (8) houses an inverter device for adjusting the rotational speed of the pump (33).

[0064] (5) Operating The cooling operation of the heat source unit (1) will be explained with reference to Figure 1. Below, an example in which all refrigerant circuits (10) are operating will be described. In cooling operation, the compressors (11A, 11B, 11C, 11D) and the pump (33) are in operation. In the first refrigerant circuit (10A), the refrigerant compressed by the first compressor (11A) is condensed in the first air heat exchanger (12A). A portion of the condensed refrigerant flows through the first liquid passage (L1) of the first subcooling heat exchanger (14A). The remainder of this refrigerant is depressurized by the cooling expansion valve (25) of the injection pipe (22) and then flows through the second liquid passage (L2). In the first subcooling heat exchanger (14A), the refrigerant in the first liquid passage (L1) is cooled by the refrigerant in the second liquid passage (L2). The refrigerant in the second liquid passage (L2) is drawn into the intermediate pressure section of the first compressor (11A). The refrigerant cooled in the first liquid channel (L1) passes through the liquid pipe (21) and flows through the first refrigerant channel (R1) of the first water heat exchanger (31). In the first water heat exchanger (31), the refrigerant in the first refrigerant channel (R1) absorbs heat from the water in the first water channel (W1) and evaporates. The refrigerant evaporated in the first water heat exchanger (31) passes through the first accumulator (15A) and is then drawn into the first compressor (11A).

[0065] The second refrigerant circuit (10B), the third refrigerant circuit (10C), and the fourth refrigerant circuit (10D) perform a similar refrigeration cycle.

[0066] In the water circuit (30), water transported by the pump (33) flows through the first water channel (W1) of the first water heat exchanger (31). In the first water heat exchanger (31), the water in the first water channel (W1) is cooled by the refrigerant in the first refrigerant channel (R1) and the second refrigerant channel (R2). The water that flows out of the first water heat exchanger (31) flows through the second water channel (W2) of the second water heat exchanger (32). In the second water heat exchanger (32), the water in the second water channel (W2) is cooled by the refrigerant in the third refrigerant channel (R3) and the fourth refrigerant channel (R4). The water cooled in this manner is used as a cooling source for air conditioning.

[0067] (6) Housing Department 1 The first housing section (42A) will be described below.

[0068] As shown in Figures 2 to 4, the first housing section (42A) has a fifth transverse frame (Fa5) and a sixth transverse frame (Fa6) as its frame. The fifth transverse frame (Fa5) is located at the lower end of the first housing section (42A) and is provided on the first intermediate plate (45A). The fifth transverse frame (Fa5) includes a pair of elongated plate-shaped members extending in the front-rear direction and a pair of elongated plate-shaped members extending in the left-right direction. The multiple elongated plate-shaped members constituting the fifth transverse frame (Fa5) are arranged in a rectangular ring shape along the edge of the first intermediate plate (45A). The sixth transverse frame (Fa6) is located at the upper end of the first housing section (42A) and is fixed to the first upper cover (43A). The sixth transverse frame (Fa6) includes a pair of elongated plate-shaped members extending in the front-rear direction and a pair of elongated plate-shaped members extending in the left-right direction. The multiple elongated plate-shaped members constituting the sixth horizontal frame (Fa6) are arranged in a rectangular ring shape so as to conform to the outer shape of the opening at the lower end of the first housing portion (42A).

[0069] As shown in Figures 2, 5, and 8, the first housing section (42A) has a frame consisting of a plurality of column sections (Fc) and a plurality of support frames (Fd). The lower end of each of the plurality of column sections (Fc) and the plurality of support frames (Fd) is fixed to the fifth transverse frame (Fa5), and the upper end of each of the plurality of column sections (Fc) and the plurality of support frames (Fd) is fixed to the sixth transverse frame (Fa6).

[0070] Multiple column sections (Fc) are interposed between the first upper cover (43A) and the lower housing section (41) located below the first upper cover (43A), thereby supporting the first upper cover (43A) from below. Supporting from below is an example of supporting from the other side of the third direction. The multiple column sections (Fc) include a first column section (Fc1), a second column section (Fc2) located to the right of the first column section (Fc1), a third column section (Fc3) located behind the first column section (Fc1), and a fourth column section (Fc4) located behind the second column section (Fc2) and to the right of the third column section (Fc3).

[0071] As shown in Figure 8, the multiple support frames (Fd) include a first support frame (Fd1), a second support frame (Fd2) positioned to the right of the first support frame (Fd1), a third support frame (Fd3) positioned behind the first support frame (Fd1), and a fourth support frame (Fd4) positioned behind the second support frame (Fd2) and to the right of the third support frame (Fd3). The first support frame (Fd1) and the second support frame (Fd2) are positioned between the first column section (Fc1) and the second column section (Fc2) and are inclined forward relative to the upward direction. Inclining forward relative to the upward direction means that the upper end is positioned further forward than the lower end. A first intake port (I1) is formed between the first support frame (Fd1) and the second support frame (Fd2), and a first air heat exchanger (12A) is positioned in the first intake port (I1). The first air heat exchanger (12A) is tilted forward relative to the upward direction so as to have the same inclination angle as the first support frame (Fd1) and the second support frame (Fd2). The third support frame (Fd3) and the fourth support frame (Fd4) are positioned between the third column (Fc3) and the fourth column (Fc4) and are tilted backward relative to the upward direction. Tilting backward relative to the upward direction means that the upper end is positioned further back than the lower end. A third intake port (I3) is formed between the third support frame (Fd3) and the fourth support frame (Fd4), and the third air heat exchanger (12C) is positioned in the third intake port (I3). The third air heat exchanger (12C) is tilted backward relative to the upward direction so as to have the same inclination angle as the third support frame (Fd3) and the fourth support frame (Fd4).

[0072] As shown in Figures 2 to 5 and Figure 8, the first housing section (42A) has a plurality of partition plates (Fe) and a plurality of side plates (Ff) as its outer plate. The lower end of each of the plurality of partition plates (Fe) and the plurality of side plates (Ff) is fixed to the fifth horizontal frame (Fa5), and the upper end of each of the plurality of partition plates (Fe) and the plurality of side plates (Ff) is fixed to the sixth horizontal frame (Fa6). The partition plates (Fe) cover the corners of the first blower chamber (S2A). The side plates (Ff) cover the sides of the first blower chamber (S2A). The side plates (Ff) are positioned between the first blower chamber (S2A) and the second blower chamber (S2B), thereby separating the first blower chamber (S2A) and the second blower chamber (S2B).

[0073] The multiple partition plates (Fe) include a first partition plate (Fe1) that covers the gap formed between the first column (Fc1) and the first support frame (Fd1), a second partition plate (Fe2) that covers the gap formed between the second column (Fc2) and the second support frame (Fd2), a third partition plate (Fe3) that covers the gap formed between the third column (Fc3) and the third support frame (Fd3), and a fourth partition plate (Fe4) that covers the gap formed between the fourth column (Fc4) and the fourth support frame (Fd4).

[0074] As shown in Figures 8 and 9, the first partition plate (Fe1) is positioned in the left front corner of the first blower chamber (S2A). The first partition plate (Fe1) is positioned from the first column (Fc1) to the first support frame (Fd1). The first partition plate (Fe1) includes a first plate portion (Fe11) and a second plate portion (Fe12) connected to the first plate portion (Fe11), and has a bent or curved shape where the first plate portion (Fe11) and the second plate portion (Fe12) connect. The first plate portion (Fe11) protrudes to the left from the first support frame (Fd1). The first plate portion (Fe11) includes a plate surface (Fe11a) facing the rear and opposite the first blower chamber (S2A). The first plate portion (Fe11) is inclined forward relative to the upward direction so as to have the same inclination angle as the first air heat exchanger (12A). The second plate portion (Fe12) protrudes rearward from the left end of the first plate portion (Fe11). The second plate portion (Fe12) faces to the right and includes a plate surface (Fe12a) facing the first blower chamber (S2A). The dimensions of the second plate portion (Fe12) in the front-to-back direction decrease as it moves downward. The downward direction is an example of another direction of the third direction. The rearward edge portion (Fe12b) of the second plate portion (Fe12) extends along the vertical direction. A first engaging portion (Fe12c) is provided on the edge portion (Fe12b) of the second plate portion (Fe12). The first engaging portion (Fe12c) is, for example, a projection, and a plurality of them (three in this embodiment) are provided so as to be aligned along the vertical direction. Furthermore, a second engaging portion (Fc11) is provided on the surface of the first column portion (Fc1) facing the second plate portion (Fe12) to engage with the first engaging portion (Fe12c). The second engaging portion (Fc11) is, for example, a hole into which the first engaging portion (Fe12c), which is a projection, can be inserted.

[0075] As shown in Figures 8 and 10, the second partition plate (Fe2) has a shape symmetrical to the first partition plate (Fe1). The second partition plate (Fe2) is positioned in the right front corner of the first blower chamber (S2A). The second partition plate (Fe2) is positioned from the second column (Fc2) to the second support frame (Fd2). The second partition plate (Fe2) includes a first plate portion (Fe21) and a second plate portion (Fe22) connected to the first plate portion (Fe21), and has a bent or curved shape where the first plate portion (Fe21) and the second plate portion (Fe22) connect. The first plate portion (Fe21) protrudes to the right from the second support frame (Fd2). The first plate portion (Fe21) includes a plate surface (Fe21a) facing the rear and opposite the first blower chamber (S2A). The first plate portion (Fe21) is inclined forward relative to the upward direction so as to have the same inclination angle as the first air heat exchanger (12A). The second plate portion (Fe22) protrudes rearward from the right end of the first plate portion (Fe21). The second plate portion (Fe22) faces leftward and includes a plate surface (Fe22a) facing the first blower chamber (S2A). The dimensions of the second plate portion (Fe22) decrease in the front-to-back direction as it extends downward. The rearward edge portion (Fe22b) of the second plate portion (Fe22) extends along the vertical direction. A first engaging portion (Fe22c) is provided on the edge portion (Fe22b) of the second plate portion (Fe22). Furthermore, a second engaging portion (Fc21) is provided on the surface of the second column portion (Fc2) that faces the second plate portion (Fe22), which engages with the first engaging portion (Fe22c).

[0076] As shown in Figure 8, the third partition plate (Fe3) is a member having the same shape as the second partition plate (Fe2) (see Figure 10), but arranged in the opposite direction to the second partition plate (Fe2). The third partition plate (Fe3) is located in the left rear corner of the first blower chamber (S2A). The third partition plate (Fe3) is located from the third column (Fc3) to the third support frame (Fd3). The third partition plate (Fe3) includes a first plate portion (Fe31) and a second plate portion (Fe32) connected to the first plate portion (Fe31), and has a bent or curved shape where the first plate portion (Fe31) and the second plate portion (Fe32) connect. The first plate portion (Fe31) faces forward and includes a plate surface (Fe31a) facing the first blower chamber (S2A), and is inclined rearward relative to the upward direction so as to have the same inclination angle as the third air heat exchanger (12C). The second plate portion (Fe32) faces right and includes a plate surface (Fe32a) facing the first blower chamber (S2A), and its dimensions in the front-to-back direction decrease as it moves downward. A first engaging portion is provided on the front edge of the second plate portion (Fe32). In addition, a second engaging portion is provided on the surface of the third column portion (Fc3) facing the second plate portion (Fe32), which engages with the first engaging portion of the third partition plate (Fe3).

[0077] As shown in Figure 8, the fourth partition plate (Fe4) is a member having the same shape as the first partition plate (Fe1) (see Figure 9), but arranged in the opposite direction to the first partition plate (Fe1). The third partition plate (Fe3) is located in the right rear corner of the first blower chamber (S2A). The fourth partition plate (Fe4) is located from the fourth column (Fc4) to the fourth support frame (Fd4). The fourth partition plate (Fe4) includes a first plate portion (Fe41) and a second plate portion (Fe42) connected to the first plate portion (Fe41), and has a bent or curved shape where the first plate portion (Fe41) and the second plate portion (Fe42) connect. The first plate section (Fe41) faces forward and includes a plate surface (Fe41a) facing the first blower chamber (S2A), and is inclined rearward relative to the upward direction so as to have the same inclination angle as the third air heat exchanger (12C). The second plate section (Fe42) faces left and includes a plate surface (Fe42a) facing the first blower chamber (S2A), and its dimensions in the front-to-back direction decrease as it moves downward. A first engaging portion is provided on the front edge of the second plate section (Fe42). In addition, a second engaging portion is provided on the surface of the fourth column section (Fc4) facing the second plate section (Fe42), which engages with the first engaging portion of the fourth partition plate (Fe4).

[0078] As shown in Figure 8, the multiple side plates (Ff) include a first side plate (Ff1) that covers the gap formed between the first column (Fc1) and the third column (Fc3), and a second side plate (Ff2) that covers the gap formed between the second column (Fc2) and the fourth column (Fc4). The first side plate (Ff1) is a flat plate-shaped member provided extending from the first column (Fc1) to the third column (Fc3). The second side plate (Ff2) is a flat plate-shaped member provided extending from the second column (Fc2) to the fourth column (Fc4).

[0079] (7) Second Housing Department The differences between the second housing section (42B) and the first housing section (42A) will be explained.

[0080] As shown in Figures 2 and 8, the second housing section (42B) has as a frame a fifth transverse frame (Fa5), a sixth transverse frame (Fa6), a plurality of column sections (Fc) (first column section (Fc1), second column section (Fc2), third column section (Fc3), and fourth column section (Fc4)), and a plurality of support frames (Fd) (first support frame (Fd1), second support frame (Fd2), third support frame (Fd3), and fourth support frame (Fd4)). The second housing section (42B) has as an outer plate a plurality of partition plates (Fe) (first partition plate (Fe1), second partition plate (Fe2), third partition plate (Fe3), and fourth partition plate (Fe4)), and a plurality of side plates (Ff) (first side plate (Ff1), and second side plate (Ff2)).

[0081] In the second housing section (42B), the fifth horizontal frame (Fa5) is located at the lower end of the second housing section (42B) and is provided on the second intermediate plate (45B) along the edge of the second intermediate plate (45B), which is different from the first housing section (42A). In the second housing section (42B), the sixth horizontal frame (Fa6) is located at the upper end of the second housing section (42B) and is fixed to the second upper cover (43B), which is different from the first housing section (42A).

[0082] The second housing section (42B) differs from the first housing section (42A) in that multiple column sections (Fc) are interposed between the second upper cover (43B) and the lower housing section (41) to support the second upper cover (43B) from below. The second housing section (42B) also differs from the first housing section (42A) in that a second intake port (I2) is formed between the first support frame (Fd1) and the second support frame (Fd2), and a second air heat exchanger (12B) is positioned in the second intake port (I2). The second air heat exchanger (12B) is inclined forward relative to the upward direction so as to have the same inclination angle as the first support frame (Fd1) and the second support frame (Fd2). The second housing section (42B) differs from the first housing section (42A) in that a fourth intake port (I4) is formed between the third support frame (Fd3) and the fourth support frame (Fd4), and a fourth air heat exchanger (12D) is positioned in the fourth intake port (I4). The fourth air heat exchanger (12D) is inclined rearward relative to the upward direction so that it has the same inclination angle as the third support frame (Fd3) and the fourth support frame (Fd4).

[0083] In the second housing section (42B), the partition plate (Fe) covers the corner of the second blower chamber (S2B), and the side plate (Ff) covers the side of the second blower chamber (S2B), which is different from the first housing section (42A). In the second housing section (42B), the first partition plate (Fe1) is located at the left front corner of the second blower chamber (S2B), the second partition plate (Fe2) is located at the right front corner of the second blower chamber (S2B), the third partition plate (Fe3) is located at the left rear corner of the second blower chamber (S2B), and the second partition plate (Fe2) is located at the right rear corner of the second blower chamber (S2B), which is different from the first housing section (42A). In the second housing section (42B), the plate surfaces (Fe11a, Fe21a, Fe21a, Fe21a, Fe21a) of the first plate section (Fe11, Fe21, Fe31, Fe41) and the plate surfaces (Fe12a, Fe22a, Fe32a, Fe42a) of the second plate section (Fe12, Fe22, Fe32, Fe42) face the second blower chamber (S2B), which is different from the first housing section (42A).

[0084] (8) Fastening structure of partition plates As shown in Figures 2 to 4 and Figure 8, for each of the first housing section (42A) and the second housing section (42B), the first plate portion (Fe11) of the first partition plate (Fe1) and the first plate portion (Fe21) of the second partition plate (Fe2) are detachably fastened (fixed) to the frame (Fa5, Fa6) from the front. The front is an example of the other side of the second direction. For each of the first housing section (42A) and the second housing section (42B), the first plate portion (Fe31) of the third partition plate (Fe3) and the first plate portion (Fe41) of the fourth partition plate (Fe4) are detachably fastened to the frame (Fa5, Fa6) from the rear.

[0085] (8-1) Procedure for fastening the second partition plate in the first housing section As shown in Figure 11, first, in the first housing section (42A), the second partition plate (Fe2) is positioned at a predetermined location (the right front corner of the first blower chamber (S2A)). At this time, the worker brings the second partition plate (Fe2) to the predetermined location from the front of the first housing section (42A) and pushes the second partition plate (Fe2) backward toward the second column section (Fc2) so that the projection, the first engaging portion (Fe22c), is inserted into the hole, the second engaging portion (Fc21), thereby engaging the first engaging portion (Fe22c) with the second engaging portion (Fc21). When the first engaging portion (Fe22c) engages with the second engaging portion (Fc21), the second plate portion (Fe22) of the second partition plate (Fe2) is attached to the second column portion (Fc2), and the second partition plate (Fe2) is positioned relative to the second column portion (Fc2).

[0086] As shown in Figure 12, next, in the first housing section (42A), the first plate section (Fe21) of the second partition plate (Fe2) is fastened to the frame (Fa5, Fa6) by fastening members (G1, G2) such as screws and bolts. At this time, the worker fastens the upper part of the first plate section (Fe21) to the fifth horizontal frame (Fa5) by inserting the fastening member (G1) from the front side of the first housing section (42A) while rotating it, and further fastens the lower part of the first plate section (Fe21) to the sixth horizontal frame (Fa6) by inserting the fastening member (G2) from the front side of the first housing section (42A) while rotating it, and fastens the lower part of the first plate section (Fe21) to the sixth horizontal frame (Fa6) by fastening member (G2).

[0087] Furthermore, when fastening the first plate portion (Fe21) to the frame (Fa5, Fa6), the fastening member (G1) is rotated from the front in the opposite direction to when fastening the first plate portion (Fe21) to the frame (Fa5, Fa6), thereby removing the first plate portion (Fe21) from the frame (Fa5, Fa6). The first plate portion (Fe21) is provided with a fastening portion that allows the first plate portion (Fe21) to be attached to the frame (Fa5, Fa6) from the front side of the first housing portion (42A). As shown in Figure 12, this fastening portion is the location where the first plate portion (Fe21) is attached to the frame (Fa5, Fa6) in a detachable manner (the location where it is fastened by the fastening members (G1, G2)), and is located at the front of the first housing portion (42A). Furthermore, after the first plate portion (Fe21) is removed from the frame (Fa5, Fa6), the second partition plate (Fe2) is pulled out to the rear, disengaging the first engaging portion (Fe22c) and the second engaging portion (Fc21), and the second partition plate (Fe2) is removed from the first housing portion (42A). From the above, it is possible to attach and detach the second partition plate (Fe2) to the first housing portion (42A) from the front side (the other side of the second direction) of the first housing portion (42A).

[0088] (8-2) Procedure for fastening the first partition plate in the second housing section As shown in Figure 13, first, in the second housing section (42B), the first partition plate (Fe1) is positioned in the left front corner of the second blower chamber (S2B) such that the first engaging portion (Fe12c) (see Figure 9) of the first partition plate (Fe1) engages with the second engaging portion (Fc11) of the first column section (Fc1). As shown in Figure 14, next, the upper part of the first plate section (Fe11) of the first partition plate (Fe1) is fastened to the fifth horizontal frame (Fa5) by a fastening member (G3), and further, the lower part of the first plate section (Fe11) is fastened to the sixth horizontal frame (Fa6) by a fastening member (G4).

[0089] (9) Effects As described above, the first plate portions (Fe11, Fe12, Fe13, Fe14) of the first housing portion (42A) face the first blower chamber (S2A) of the first housing portion (42A) in the front-to-back direction (second direction). The second plate portions (Fe21, Fe22, Fe22, Fe23) of the first housing portion (42A) face the first blower chamber (S2A) of the first housing portion (42A) in the left-to-right direction (first direction). The first plate portions (Fe11, Fe12, Fe13, Fe14) are fastened to the frame (Fa5, Fa6) of the first housing portion (42A). According to this, when removing the first plate sections (Fe11, Fe12, Fe13, Fe14) from the frames (Fa5, Fa6), the removal work can be performed from the front side of the first housing section (42A), thus preventing the adjacent housing section (42) from getting in the way during the removal of the first plate sections (Fe11, Fe12, Fe13, Fe14). As a result, the first plate sections (Fe11, Fe12, Fe13, Fe14) can be easily removed from the frames (Fa5, Fa6). Furthermore, after removing the first plate sections (Fe11, Fe12, Fe13, Fe14) from the frames (Fa5, Fa6) and moving the partition plates (Fe1, Fe2, Fe3, Fe4), the interior of the first housing section (42A) can be accessed through the opening (Fg) formed in the location where the partition plates (Fe1, Fe2, Fe3, Fe4) were located, making it easy to perform maintenance work on the various devices installed inside the first housing section (42A), thereby improving the maintainability of the heat source unit (1). Note that, regarding the front side of the first housing section (42A), when removing the first plate sections (Fe11, Fe12) from the frames (Fa5, Fa6), the front side refers to the front, and when removing the first plate sections (Fe13, Fe14) from the frames (Fa5, Fa6), the front side refers to the rear.

[0090] Furthermore, since the partition plates (Fe1, Fe2, Fe3, Fe3) can partition the connecting portion of adjacent housing sections (42A, 42B) by the second plate section (Fe12, Fe22, Fe32, Fe42), there is no need to provide a separate component to partition the connecting portion of adjacent housing sections (42A, 42B). As a result, an increase in the manufacturing cost of the heat source unit (1) can be suppressed. In addition, since the first partition plate (Fe2) and the fourth partition plate (Fe4) have the same shape, and the second partition plate (Fe2) and the third partition plate (Fe3) have the same shape, components of the same shape can be used, thus suppressing an increase in the manufacturing cost of the heat source unit (1). Furthermore, since the first partition plate (Fe2) and the second partition plate (Fe2) are detachable from the front, and the third partition plate (Fe3) and the fourth partition plate (Fe4) are detachable from the rear, it is not necessary to access narrow spaces such as between the first housing section (42A) and the second housing section (42B) which are arranged on the left and right when removing the partition plates (Fe1, Fe2, Fe3, Fe3) for maintenance work. As a result, maintainability can be improved.

[0091] Furthermore, the first air heat exchanger (12A), the second partition plate (Fe2), and the second column (Fc2) of the first housing section (42A) are arranged in the order of first air heat exchanger (12A), second partition plate (Fe2), and second column (Fc2) along the left-right direction. By attaching the second partition plate (Fe2) to the second column (Fc2), it is possible to prevent the second partition plate (Fe2) from being located outside the second column (Fc2) (towards the adjacent housing section (42)) in the left-right direction. As a result, it is possible to prevent the adjacent housing section (42) from getting in the way when removing the second partition plate (Fe2).

[0092] Furthermore, the second partition plate (Fe2) of the first housing section (42A) and the first partition plate (Fe1) of the second housing section (42B) face each other in the left-right direction. As a result, even though the first partition plate (Fe1) and the second partition plate (Fe2) face each other in the left-right direction, the partition plates (Fe1, Fe2) can be attached to and detached from the frame (Fa5, Fa6) from the front side (the other side in the second direction), making it easy to attach and detach the partition plates (Fe1, Fe2) and improving maintainability.

[0093] Furthermore, the first plate portion (Fe21) of the first housing portion (42A) forms the first air intake port (I1) for the first blower chamber (S2A) of the first housing portion (42A). That is, one side of the first air intake port (I1) is formed along the edge of the first plate portion (Fe21). As a result, the first air intake port (I1) and the first plate portion (Fe21) are in close proximity, making it easy to remove the first plate portion (Fe11, Fe12) from the frame (Fa5, Fa6) and perform maintenance on the first air intake port (I1).

[0094] (10) Variations This section describes a modified version of the heat source unit (1), called heat source unit (1A). Regarding heat source unit (1A), the main points of difference from heat source unit (1) will be explained. Parts of the heat source unit (1A) that are identical or equivalent to those of heat source unit (1) will be given the same reference numerals, and detailed explanations and their associated effects will not be repeated.

[0095] The modified heat source unit (1A) differs from heat source unit (1) in that it performs not only cooling but also heating.

[0096] As shown in Figure 15, the heat source unit (1A) is equipped with a heat source circuit (111). The heat source circuit (111) is provided in the corresponding heat source units (115A, 115B), respectively. The heat source circuit (111) is connected to a compressor (112), air heat exchangers (12A, 12C), a first expansion valve (113), a second expansion valve (114), a receiver (115), and a four-way switching valve (116).

[0097] The first expansion valve (113) and the second expansion valve (114) are each electric valves with a variable opening. The first air heat exchanger (12A) and the first expansion valve (113) are connected to the first parallel circuit (118), and the third air heat exchanger (12C) and the second expansion valve (114) are connected to the second parallel circuit (119). The first parallel circuit (118) and the second parallel circuit (119) constitute a refrigerant parallel circuit that is in a parallel relationship with each other.

[0098] The receiver (115) is a vertically elongated, hollow, sealed container that constitutes the refrigerant regulator. Excess refrigerant is stored inside the receiver (115).

[0099] The four-way directional control valve (116) has four ports, from the first to the fourth. In the four-way directional control valve (116), the first port is connected to the discharge section of the compressor (112), the second port is connected to the suction section of the compressor (112), the third port is connected to the gas end of each air heat exchanger (12A, 12C), and the fourth port is connected to the gas line (131) of the utilization circuit (130). The four-way directional control valve (116) can switch between a state in which the first and third ports are in communication and the second and fourth ports are in communication (first state shown by the solid line in Figure 15) and a state in which the first and fourth ports are in communication and the second and third ports are in communication (second state shown by the dashed line in Figure 15).

[0100] A supercooling unit (120) and a refrigerant cooling unit (125) are connected to the heat source circuit (111).

[0101] The supercooling unit (120) comprises a supercooling heat exchanger (121), an injection circuit (122), and a first electric valve (123). The supercooling heat exchanger (121) has a first flow path (121a) that communicates with a receiver (115) and a second flow path (121b) that connects to the injection circuit (122). The injection circuit (122) has an inlet end connected between the receiver (115) and the supercooling unit (120), and an outlet end that communicates with the suction section of the compressor (112). The first electric valve (123) is connected to the upstream side of the second flow path (121b) of the injection circuit (122). The first electric valve (123) is composed of an electronically expanded valve with a variable opening. In the supercooled heat exchanger (121), the liquid refrigerant flowing through the first channel (121a) and the refrigerant flowing through the second channel (121b) exchange heat. As a result, the liquid refrigerant flowing through the first channel (121a) is cooled in the supercooled heat exchanger (121).

[0102] The refrigerant cooling unit (125) has a cooling circuit (126). One end of the cooling circuit (126) is branched into two. One of the two branches of the cooling circuit (126) is connected between the first air heat exchanger (12A) and the first expansion valve (113) in the first parallel circuit (118). The other branch of the cooling circuit (126) is connected between the third air heat exchanger (12C) and the second expansion valve (114) in the second parallel circuit (119). The other end of the cooling circuit (126) is connected between the receiver (115) and the two expansion valves (113, 114). A second motorized valve (128), which is, for example, an electronic expansion valve, is connected to the cooling circuit (126).

[0103] The utilization circuit (130) corresponding to the heat source unit (115A) is connected to the first refrigerant side flow path (135a) of the water heat exchanger (135). The utilization circuit (130) corresponding to the heat source unit (115B) is connected to the second refrigerant side flow path (135b) of the water heat exchanger (135).

[0104] Each utilization circuit (130) has a gas line (131) and a liquid line (132). The gas line (131) is connected between the gas end of the water heat exchanger (135) and the fourth port of the four-way switching valve (116). The liquid line (132) is connected between the liquid end of the water heat exchanger (135) and the subcooled heat exchanger (121). A third expansion valve (133), which is an electronic expansion valve, is connected to the liquid line (132).

[0105] The water circuit (140) has an inlet pipe (141) and an outlet pipe (142) in order from upstream to downstream. The inlet pipe (141) is connected to the inlet end of the first water channel (135c) of the water heat exchanger (135). The outlet pipe (142) is connected to the outlet end of the first water channel (135c) of the water heat exchanger (135). A water pump (144) that transports water in the water circuit (140) is connected to the inlet pipe (141).

[0106] (10-1) Cooling operation During cooling operation, the four-way switching valve (116) enters the first state, and a refrigeration cycle is performed in which each air heat exchanger (12A, 12C) acts as a heat radiator or condenser, and the water heat exchanger (135) acts as an evaporator. Specifically, the refrigerant compressed by the compressor (112) is divided and flows to the first air heat exchanger (12A) and the third air heat exchanger (12C). In each air heat exchanger (12A, 12C), the refrigerant condenses as it releases heat into the outside air. The refrigerant that releases heat in the first air heat exchanger (12A) passes through the first expansion valve (113), which is in a fully open state. The refrigerant that releases heat in the third air heat exchanger (12C) passes through the second expansion valve (114), which is in a fully open state. The refrigerants that merge in the receiver (115) pass through the subcooled heat exchanger (121), are depressurized in the third expansion valve (133), and then flow through the water heat exchanger (135). In the water heat exchanger (135), the refrigerant absorbs heat from the water in the water circuit (140) and evaporates, cooling the water. The refrigerant evaporated in the water heat exchanger (135) is drawn into the compressor (112) and compressed.

[0107] (10-2) Heating operation During heating operation, the four-way switching valve (116) enters the second state, the water heat exchanger (135) becomes a heat radiator or condenser, and each air heat exchanger (12A, 12C) becomes an evaporator in a refrigeration cycle. Specifically, the refrigerant compressed by the compressor (112) flows through the water heat exchanger (135). In the water heat exchanger (135), the refrigerant condenses by releasing heat into the water in the water circuit (140), and this water is heated. The refrigerant condensed in the water heat exchanger (135) passes sequentially through the fully open third expansion valve (133), the subcooled heat exchanger (121), and the receiver (115), and then splits into the first expansion valve (113) and the second expansion valve (114). The refrigerant, depressurized in the first expansion valve (113), evaporates in the first air heat exchanger (12A). The refrigerant, depressurized in the second expansion valve (114), evaporates in the third air heat exchanger (12C). The refrigerants evaporated in each air heat exchanger (12A, 12C) merge and are then drawn into the compressor (112) and compressed.

[0108] (10-3) Configuration of air heat exchanger and casing As shown in Figures 16 and 17, the air heat exchangers (12A, 12B, 12C, 12D) have an L-shape when viewed in the vertical direction. The air heat exchangers (12A, 12B) include a first part (12Aa, 12Ba) extending along the left-right direction, and a second part (12Aa, 12Bb) that is bent or curved and connected to the left side of the first part (12Aa, 12Ba) and extends along the rear direction. The first part (12Aa, 12Ba) is inclined forward relative to the upward direction so as to have the same inclination angle as the second support frame (Fd2). The second part (12Aa, 12Bb) extends along the vertical direction. In the heat source unit (1A), the installation space for the L-shaped air heat exchangers (12A, 12B) is secured by not providing the first support frame (Fd1).

[0109] In the heat source unit (1A), the first side plate (Ff1) has a length such that it covers the rear portion of the blower chamber (S2A, S2B) in the front-rear direction, but does not cover the front portion. As a result, the second portion (12Aa, 12Bb) of the air heat exchanger (12A, 12B) is not covered by the first side plate (Ff1) and is exposed to the outside of the blower chamber (S2A, S2B). Consequently, air can be circulated between the inside and outside of the blower chamber (S2A, S2B) through both the first portion (12Aa, 12Ba) and the second portion (12Aa, 12Bb) of the air heat exchanger (12A, 12B).

[0110] The air heat exchanger (12C, 12D) includes a third section (12Ca, 12Da) extending along the left-right direction, and a fourth section (12Da, 12Db) that is bent or curved and connected to the right side of the third section (12Ca, 12Da) and extends along the front direction. The third section (12Ca, 12Da) is inclined rearward relative to the upward direction so as to have the same inclination angle as the third support frame (Fd3). The fourth section (12Da, 12Db) extends along the vertical direction. In the heat source unit (1A), the fourth support frame (Fd4) is not provided to secure space for the installation of the L-shaped air heat exchanger (12C, 12D).

[0111] In the heat source unit (1A), the second side plate (Ff2) has a length such that it covers the front portion of the blower chamber (S2A, S2B) in the front-to-back direction, but does not cover the rear portion. As a result, the fourth portion (12Da, 12Db) of the air heat exchanger (12C, 12D) is not covered by the second side plate (Ff2) and is exposed to the outside of the blower chamber (S2A, S2B). Consequently, air can be circulated between the inside and outside of the blower chamber (S2A, S2B) through both the third portion (12Ca, 12Da) and the fourth portion (12Da, 12Db) of the air heat exchanger (12C, 12D).

[0112] (11) Other embodiments The embodiments described above may also have the following configurations.

[0113] The heat source unit (1) of this embodiment is a chilling unit dedicated to cooling, which generates chilled water. A modified heat source unit (1A) of heat source unit (1) may be a so-called heat pump type chilling unit that generates both chilled and hot water. However, the heat source unit (1,1A) may also be a heat source unit for hot water supply that generates hot water.

[0114] The water heat exchanger (31, 32, 135) may be one or three or more.

[0115] In the heat source unit (1) shown in Figure 8, the second partition plate (Fe2) of the first housing section (42A) and the first partition plate (Fe1) of the second housing section (42B) are separate components arranged adjacent to each other in the left-right direction. However, the present invention is not limited thereto. The second partition plate (Fe2) of the first housing section (42A) and the first partition plate (Fe1) of the second housing section (42B) may be combined to form a single partition plate (fifth partition plate). This fifth partition plate has a T-shape when viewed from above, by integrating the second plate portion (Fe22) of the second partition plate (Fe2) of the first housing section (42A) and the second plate portion (Fe12) of the first partition plate (Fe1) of the second housing section (42B). In this case, the fourth partition plate (Fe4) of the first housing section (42A) and the third partition plate (Fe3) of the second housing section (42B) may also be formed by integrating the second plate section (Fe42) and the second plate section (Fe32) to create a single partition plate (sixth partition plate) that has a T-shape when viewed from above. In this case, the column section (Fc) and side plate (Ff) arranged between the fifth partition plate and the sixth partition plate may consist of one column section (Fc) attached to the fifth partition plate, one column section (Fc) attached to the sixth partition plate, and one side plate (Ff) arranged between these column sections (Fc). That is, there is no need to provide two units in parallel on the left and right sides as shown in Figure 8, with one side plate (Ff) arranged between two column sections (Fc), between the T-shaped fifth partition plate and the T-shaped sixth partition plate; only one such unit is needed.

[0116] The heat source unit (1) may be equipped with a heat source circuit (111) instead of a refrigerant circuit (10), and may be configured to perform both cooling and heating operations. A modified example of the heat source unit (1), the heat source unit (1A), may be equipped with a refrigerant circuit (10) instead of a heat source circuit (111), and may be configured to perform only cooling operations among cooling and heating operations.

[0117] A thermistor may be placed in the first blower chamber (S2A) of the first housing section (42A). Furthermore, as shown in Figure 11, the thermistor may be located in a place where it can be seen from outside the first housing section (42A) through the opening (Fg) when the second partition plate (Fe2) is removed from the first housing section (42A). This allows for easy access to the thermistor from outside the first housing section (42A) through the opening (Fg), thereby improving the maintainability of the thermistor.

[0118] The first partition plate (Fe2) may be positioned on the trajectory of the movement of maintenance parts when they are removed from the first blower chamber (S2A) of the first housing section (42A) to the outside of the first housing section (42A). This allows the maintenance parts to be easily removed from the first blower chamber (S2A) of the first housing section (42A) through the opening (Fg) by removing the first partition plate (Fe2) from the first housing section (42A) (see Figure 11).

[0119] While embodiments and modifications have been described above, it will be understood that a variety of changes in form and details are possible without departing from the spirit and scope of the claims. Furthermore, the embodiments, modifications, and other embodiments described above may be combined or substituted as appropriate, as long as they do not impair the functions covered by this disclosure.

[0120] The designations "1st," "2nd," "3rd," etc., mentioned above are used to distinguish between the terms to which these designations are attached, and do not limit the number or order of those terms. [Industrial applicability]

[0121] As described above, this disclosure is useful for heat source units. [Explanation of Symbols]

[0122] 1 Heat source unit 10 Refrigerant Circuit 11A, 11B, 11C, 11D Compressors 12A, 12B, 12C, 12D Air Heat Exchanger 21 Liquid tubes 31,32 Water heat exchanger 40 Casing 42 Housing Section 42A First Housing Section 42B Second Housing Section Fa5 Fifth horizontal frame Fa6 6th horizontal frame section Fe11, Fe21, Fe31, Fe41 First plate section Fe12, Fe22, Fe32, Fe42 Second plate section S1 Machine room S2 Blower room S2A 1st blower room S2B 2nd blower room

Claims

1. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D) Equipped with, The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, with respect to the internal space (S2A) of the first housing portion (42A), and is fastened to the frame (Fa5, Fa6) of the first housing portion (42A). The heat source unit includes fans (5A, 5B) positioned on one side of the internal space (S2A) in a third direction perpendicular to the first and second directions. The second plate portion (Fe22) faces the internal space (S2A) of the first housing portion (42A) in the first direction, and the first housing portion (42A) includes a column portion (Fc2) that supports the fan (5A, 5B) or the housing (43A) in which the fan (5A, 5B) is housed from the other side of the third direction. The second plate portion (Fe22) is attached to the column portion (Fc2), The second plate portion (Fe22) is opposite the column portion (Fc2) in the second direction, A first engaging portion (Fe22c) is provided on the surface of the second plate portion (Fe22) that faces the column portion (Fc2). A heat source unit in which a second engaging portion (Fc21) that engages with the first engaging portion (Fe22c) is provided on the surface of the column portion (Fc2) that faces the second plate portion (Fe22).

2. The second plate portion (Fe22) has a shape that extends from the first plate portion (Fe21) in one direction of the second direction, The heat source unit according to claim 1, wherein the first plate portion (Fe21) is detachably fastened to the frame (Fa5, Fa6) of the first housing portion (42A) from the other side of the second direction.

3. The air heat exchanger (12A) of the first housing portion (42A) is inclined with respect to the third direction, The heat source unit according to claim 1 or claim 2, wherein the first plate portion (Fe21) of the first partition plate (Fe2) extends along the inclination direction of the air heat exchanger (12A) of the first housing portion (42A).

4. The column portion (Fc2) has a shape that extends along the third direction, The heat source unit according to claim 3, wherein the second plate portion (Fe22) has a smaller dimension in the second direction as it moves toward the other direction in the third direction.

5. The heat source unit according to claim 1 or claim 2, wherein the air heat exchanger (12A) of the first housing portion (42A), the first partition plate (Fe2), and the column portion (Fc2) are arranged in the order of the air heat exchanger (12A) of the first housing portion (42A), the first partition plate (Fe2), and the column portion (Fc2) along the first direction.

6. The heat source unit according to claim 1 or claim 2, wherein the air heat exchanger (12A, 12B, 12C, 12D) has an L-shape.

7. The plurality of housing portions (42) include a second housing portion (42B) adjacent to the first housing portion (42A) in the first direction, The second housing portion (42B) has a second partition plate (Fe1) that faces the internal space (S2B) of the second housing portion (42B) in the first direction and also faces the second direction. The heat source unit according to claim 1 or claim 2, wherein the first partition plate (Fe2) and the second partition plate (Fe1) face each other in the first direction.

8. The heat source unit according to claim 1 or claim 2, wherein the first plate portion (Fe21) forms an air intake (I1) into the internal space (S2A) of the first housing portion (42A).

9. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D) Equipped with, The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, with respect to the internal space (S2A) of the first housing portion (42A), and is fastened to the frame (Fa5, Fa6) of the first housing portion (42A). The second plate portion (Fe22) faces the internal space (S2A) of the first housing portion (42A) in the first direction, The heat source unit includes fans (5A, 5B) positioned on one side of the internal space (S2A) in a third direction perpendicular to the first and second directions. The first housing portion (42A) includes a column portion (Fc2) that supports the fan (5A, 5B) or the housing (43A) in which the fan (5A, 5B) is housed from the other side of the third direction. The second plate portion (Fe22) is attached to the column portion (Fc2), The air heat exchanger (12A) of the first housing portion (42A) is inclined with respect to the third direction, The first plate portion (Fe21) of the first partition plate (Fe2) extends along the inclination direction of the air heat exchanger (12A) of the first housing portion (42A), The column portion (Fc2) has a shape that extends along the third direction, The second plate portion (Fe22) is a heat source unit in which the dimensions in the second direction become smaller as it moves toward the other direction in the third direction.

10. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D) Equipped with, The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, with respect to the internal space (S2A) of the first housing portion (42A), and is fastened to the frame (Fa5, Fa6) of the first housing portion (42A). The second plate portion (Fe22) faces the internal space (S2A) of the first housing portion (42A) in the first direction, The first housing portion (42A) is equipped with a thermistor located in the internal space (S2A), The thermistor is a heat source unit located in a place visible from the outside of the first housing (42A) when the first partition plate (Fe2) is removed from the first housing (42A).

11. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D) Equipped with, The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, with respect to the internal space (S2A) of the first housing portion (42A), and is fastened to the frame (Fa5, Fa6) of the first housing portion (42A). The second plate portion (Fe22) faces the internal space (S2A) of the first housing portion (42A) in the first direction, The first partition plate (Fe2) is a heat source unit located on the movement trajectory of maintenance parts when the maintenance parts, which are located in the internal space (S2A) of the first housing part (42A), are removed to the outside of the first housing part (42A).

12. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D) Equipped with, The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, with respect to the internal space (S2A) of the first housing portion (42A), and is fastened to the frame (Fa5, Fa6) of the first housing portion (42A). The second plate portion (Fe22) faces the internal space (S2A) of the first housing portion (42A) in the first direction, The heat source unit includes fans (5A, 5B) positioned on one side of the internal space (S2A) in a third direction perpendicular to the first and second directions. The first housing portion (42A) includes a column portion (Fc2) that supports the fan (5A, 5B) or the housing (43A) in which the fan (5A, 5B) is housed from the other side of the third direction. The second plate portion (Fe22) engages with the column portion (Fc2) without being fastened, forming a heat source unit.

13. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D) Equipped with, The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces the internal space (S2A) of the first housing portion (42A) in a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, and the upper and lower parts of the first plate portion (Fe21) are fastened to the frame (Fa5, Fa6) of the first housing portion (42A). The fastening point between the first plate portion (Fe21) and the frame (Fa6) at the lower part of the first plate portion (Fe21) is provided on a surface of the first plate portion (Fe21) that extends in the vertical direction. The second plate portion (Fe22) is a heat source unit facing the first direction with respect to the internal space (S2A) of the first housing portion (42A).

14. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D) Equipped with, The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces the internal space (S2A) of the first housing portion (42A) in a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, and the upper and lower parts of the first plate portion (Fe21) are fastened to the frame (Fa5, Fa6) of the first housing portion (42A). The fastening points between the first plate portion (Fe21) and the frame (Fa6) at the upper part and the fastening points between the first plate portion (Fe21) and the frame (Fa5) at the lower part are provided on surfaces facing the same direction. The second plate portion (Fe22) is a heat source unit facing the first direction with respect to the internal space (S2A) of the first housing portion (42A).

15. Multiple housing sections (42) arranged in a row, Each of the aforementioned multiple housing sections (42) is provided with an air heat exchanger (12A, 12B, 12C, 12D), The first housing portion (42A), which is one of the multiple housing portions (42) mentioned above, comprises a first partition plate (Fe2) including a first plate portion (Fe21) and a second plate portion (Fe22), The first plate portion (Fe21) faces a second direction perpendicular to the first direction in which the plurality of housing portions (42) are aligned, with respect to the internal space (S2A) of the first housing portion (42A), and the upper and lower parts of the first plate portion (Fe21) are fastened to the transverse frames (Fa5, Fa6) of the first housing portion (42A) that extend in the first direction. The fastening point between the horizontal frame (Fa5) and the lower part of the first plate portion (Fe21) is provided on the surface of the horizontal frame (Fa5) that is erected in the first direction, The second plate portion (Fe22) is a heat source unit facing the first direction with respect to the internal space (S2A) of the first housing portion (42A).

Images