Heat source unit

Abstract

To improve fixation of an electrical component box installed inside a machine room of a heat source unit.SOLUTION: A heat source unit comprises: water heat exchangers (31, 32) that exchanges heat between a predetermined heat medium and water; a water pipe (62) connected to the water heat exchangers (31, 32); an electrical component box (8) that houses predetermined electrical components; a casing (40) that houses the water pipe (62) and the electrical component box (8); and a support part (100) that is fixed to the water pipe (62), and supports the electrical component box (8) from below.SELECTED DRAWING: Figure 12

Description

[Technical Field]

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

[0002] The air conditioner disclosed in Patent Document 1 has an electrical equipment box located in an appropriate position within the casing in relation to the arrangement of the refrigerant piping, and is equipped with an outdoor unit that allows the electrical equipment box to be easily removed from or attached to the casing. The electrical equipment box of the outdoor unit is provided with engaging members on its top and side surfaces, and these engaging members engage with a support frame within the casing to secure the electrical equipment box within the casing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-099578 Summary of the Invention [Problem to be solved by the invention]

[0004] In a heat source unit such as the outdoor unit of Patent Document 1, the electrical equipment box placed in the casing is fixed in a floating state within the casing, and therefore this fixing method cannot be said to be sufficiently stable.

[0005] An object of the present disclosure is to improve the fixation of an electrical component box installed inside a machine chamber of a heat source unit. [Means for solving the problem]

[0006] The first aspect is a water heat exchanger (31, 32) for exchanging heat between a predetermined heat medium and water; a water pipe (62) connected to the water heat exchangers (31, 32); an electrical equipment box (8) that houses predetermined electrical components; a casing (40) that houses the water pipe (62) and the electrical component box (8); a support portion (100) that is fixed to the water pipe (62) and supports the electrical component box (8) from below; It is a heat source unit.

[0007] In the first aspect, by supporting the electrical component box (8) from below, the fixation and installation stability of the electrical component box (8) inside the casing (40) are improved compared to, for example, fixing the electrical component box (8) by hanging it from above or fixing the side of the electrical component box (8).

[0008] The second aspect is the same as the first aspect. The support portion (100) has an opening (110) into which the water pipe (62) is fitted.

[0009] In the second embodiment, the opening (110) of the support part (100) comes into close contact with the water pipe (62) due to the interference of the opening (110), and the support part (100) can be fastened and fixed to the water pipe (62).

[0010] The third aspect is the second aspect, The support part (100) is formed in a gate shape with the opening (110) opening downward from the support part (100).

[0011] In the third aspect, the support part (100) is attached so that the water pipe (62) is fitted from above. In this manner, the electrical component box (8) supported from below by the support part (100) is more securely fixed and more stably installed inside the casing.

[0012] A fourth aspect is the second or third aspect, The support portion (100) has elastic members (131, 132) and is in contact with the water pipe (62) through the elastic members (131, 132).

[0013] In the fourth aspect, the elastic members (131, 132) can improve the adhesion between the support portion (100) and the water pipe (62).

[0014] The fifth aspect is the fourth aspect, The support portion (100) has a plate-shaped plate portion (120b) in which the opening (110) is formed, The thickness direction of the plate portion (120b) coincides with the extending direction of the water pipe (62).

[0015] In the fifth aspect, the support part (100) can be easily attached to the water pipe (62).

[0016] The sixth aspect is the fifth aspect, The support portion (100) is configured such that the plate portion (120b) is sandwiched between the plurality of elastic members (131, 132) in the thickness direction.

[0017] In the sixth aspect, the elastic members (131, 132) increase the thickness of the support part (100) in the stacking direction, thereby enabling the support part (100) to be stably fixed to the water pipe (62).

[0018] A seventh aspect is any one of the first to sixth aspects, The electrical component box (8) is fixed to the casing (40).

[0019] In the seventh aspect, the electrical component box (8) is fixed not only from below but also to the casing (40). In this way, the electrical component box (8) is supported in multiple ways, so that the electrical component box (8) can be stably fixed in the casing (40).

[0020] An eighth aspect is any one of the first to seventh aspects, The electrical equipment box (8) is formed in a rectangular parallelepiped shape, The direction in which the long sides of the bottom surface of the electrical component box (8) extend coincides with the direction in which the water pipe (62) extends.

[0021] In the eighth aspect, the direction in which the long sides of the bottom surface of the electrical component box (8) extend coincides with the direction in which the water pipe (62) extends, so that the electrical component box (8) can be stably fixed.

[0022] A ninth aspect is the eighth aspect, One end of the electrical equipment box (8) in the longitudinal direction is supported from below by the support portion (100), The other longitudinal end of the electrical component box (8) is fixed to the casing (40).

[0023] In the ninth aspect, one end and the other end of the electrical component box (8) in the longitudinal direction are fixed, so that the electrical component box (8) can be stably fixed in the casing (40).

[0024] A tenth aspect is the eighth aspect, One end of the electrical equipment box (8) in the longitudinal direction is supported from below by the support portion (100), The upper surface of the electrical component box (8) is fixed to the casing (40).

[0025] In the tenth aspect, the lower and upper ends of the electrical component box (8) are fixed, so that the electrical component box (8) can be stably fixed inside the casing (40).

[0026] An eleventh aspect is any one of the first to tenth aspects, The casing (40) has a first side surface (41c) provided with ports (51, 52) to which the water pipe (62) is connected, The support portion (100) is located closer to the water heat exchangers (31, 32) than the first side surface (41c).

[0027] In the eleventh aspect, the water heat exchangers (31, 32), the support portion (100), and the electrical component box (8) are arranged in this order, and this positional relationship allows the support portion (100) to act as a barrier, thereby protecting the electrical component box (8) from water leaking from the water heat exchangers (31, 32).

[0028] A twelfth aspect is any one of the first to eleventh aspects, a heat insulating member (HI) covering an outer peripheral surface of the water pipe (62), The support part (100) is fixed to the water pipe (62) via the heat insulating member (HI).

[0029] In the twelfth aspect, the heat insulating member (HI) can prevent heat from the water pipe (62) from being transmitted to the electrical component box (8), thereby preventing breakdown of electrical components inside the electrical component box (8) due to overheating.

[0030] A thirteenth aspect is any one of the first to twelfth aspects, The water supply system further includes a pump (33) provided in the casing (40) for transporting water from the water pipe (62), The electrical component box (8) accommodates electrical components for controlling the pump (33).

[0031] In the thirteenth aspect, the electric components of the pump (33) can be arranged near the water heat exchangers (31, 32).

[0032] A fourteenth aspect is any one of the first to thirteenth aspects, The support portion (100) is a support member that supports the lower portion of the electrical component box (8).

[0033] In the fourteenth aspect, the support portion (100) can be a separate member from the electrical component box (8). [Brief explanation of the drawings]

[0034] [Figure 1] FIG. 1 is a piping diagram of a heat source unit according to an embodiment. [Figure 2] FIG. 2 is a perspective view showing the appearance of the heat source unit. [Figure 3] FIG. 3 is a front view of the heat source unit. [Figure 4] FIG. 4 is a rear view of the heat source unit. [Figure 5] FIG. 5 is a left side view of the heat source unit. [Figure 6] FIG. 6 is a cross-sectional view taken along line AA in FIG. [Figure 7]FIG. 7 is a cross-sectional view taken along line BB in FIG. [Figure 8] Fig. 8 is a three-dimensional perspective view showing the configuration of the water heat exchanger unit according to the embodiment, in which the pump-side electrical equipment box is omitted. [Figure 9] 9 is a front view of the water heat exchanger unit, and a partially enlarged view of the periphery of the support member is shown within the dashed line frame in FIG. [Figure 10] FIG. 10 is a cross-sectional view taken along line CC in FIG. [Figure 11] FIG. 11 is a cross-sectional view taken along line DD in FIG. [Figure 12] FIG. 12 is an enlarged three-dimensional perspective view of the periphery of the support member of the water heat exchanger unit. [Figure 13] FIG. 13 is a plan view of the support member of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various modifications are possible within the scope of the technical concept of the present disclosure. Since the drawings are intended to conceptually explain the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary to facilitate understanding.

[0036] (1) Overview The heat source unit (1) according to this embodiment is used as a heat source for an air conditioner. The air conditioner 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.

[0037] (2) Refrigerant circuit configuration The heat source unit (1) of this embodiment has a plurality of refrigerant circuits (10). As shown in FIG. 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 the number may be one, two, three, or five or more. The first refrigerant circuit (10A), the second refrigerant circuit (10B), the third refrigerant circuit (10C), and the fourth refrigerant circuit (10D) have the same basic configuration. For convenience, FIG. 1 omits the illustration of the details of the third refrigerant circuit (10C) and the fourth refrigerant circuit (10D). Each refrigerant circuit (10) is filled with refrigerant. Each refrigerant circuit (10) performs a vapor compression refrigeration cycle by circulating the refrigerant. The refrigerant is an example of a heat medium.

[0038] The first refrigerant circuit (10A) mainly includes a first compressor (11A), a first air heat exchanger (12A), and a first expansion valve (13A). The first refrigerant circuit (10A) also includes a first subcooling heat exchanger (14A) and a first accumulator (15A).

[0039] The first compressor (11A) compresses the drawn refrigerant and discharges the compressed refrigerant. The first compressor (11A) is, for example, a scroll compressor, but may be another type of compressor such as a screw, turbo, or rotary compressor. The first air heat exchanger (12A) is an outdoor heat exchanger that exchanges heat between the refrigerant and outdoor air. The first air heat exchanger (12A) is a fin-and-tube heat exchanger. In this example, the first air heat exchanger (12A) functions only as a radiator (condenser) that radiates heat from the refrigerant. The first expansion valve (13A) reduces the pressure of the condensed refrigerant. The first expansion valve (13A) is, for example, an electronic expansion valve. The first subcooling heat exchanger (14A) cools the refrigerant after heat radiation, thereby increasing the degree of subcooling of the refrigerant. The first subcooling heat exchanger (14A) exchanges heat between the refrigerant in the first liquid flow path (L1) and the refrigerant in the second liquid flow path (L2).

[0040] The refrigerant circuit (10) includes, as refrigerant piping elements, a discharge pipe (20), a liquid pipe (21), an injection pipe (22), a gas pipe (23), and a suction pipe (24). 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 a portion of the liquid pipe (21) upstream of the first subcooling heat exchanger (14A). The other end of the injection pipe (22) is connected to an intermediate pressure section (midway through compression) of the first compressor (11A). A cooling expansion valve (25) is provided in a portion of the injection pipe (22) upstream of the first subcooling 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).

[0041] 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).

[0042] The second refrigerant circuit (10B) mainly includes a second compressor (11B), a second air heat exchanger (12B), and a second expansion valve (13B). The second refrigerant circuit (10B) includes 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).

[0043] The third refrigerant circuit (10C) mainly includes a third compressor (11C), a third air heat exchanger (12C), and a third expansion valve (13C). The third refrigerant circuit (10C) includes 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).

[0044] The fourth refrigerant circuit (10D) mainly includes a fourth compressor (11D), a fourth air heat exchanger (12D), and a fourth expansion valve (13D). The fourth refrigerant circuit (10D) includes 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).

[0045] (3) Water circuit As shown in FIG. 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 this order from the upstream side to the downstream side of the water flow. The pump (33) transports water in the water circuit (30). The pump (33) transports water in a water pipe (62) constituting the refrigerant circuit (10). 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 water. The second water heat exchanger (32) is the water heat exchanger (32) of the present disclosure. The first water heat exchanger (31) and the second water heat exchanger (32) are counterflow heat exchangers.

[0046] The first water heat exchanger (31) has a first water flow path (W1), a first refrigerant flow path (R1), and a second refrigerant flow path (R2). The first water flow path (W1) is connected to the water circuit (30), the first refrigerant flow path (R1) is connected to the first refrigerant circuit (10A), and the second refrigerant flow path (R2) is connected to the second refrigerant circuit (10B). The first water heat exchanger (31) exchanges heat between the water in the first water flow path (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 flow path (W1) and the refrigerant in the second refrigerant circuit (10B).

[0047] The second water heat exchanger (32) has a second water flow path (W2), a third refrigerant flow path (R3), and a fourth refrigerant flow path (R4). The second water flow path (W2) is connected to the water circuit (30), the third refrigerant flow path (R3) is connected to the third refrigerant circuit (10C), and the fourth refrigerant flow path (R4) is connected to the fourth refrigerant circuit (10D). The second water heat exchanger (32) exchanges heat between the water in the second water flow path (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 flow path (W2) and the refrigerant in the fourth refrigerant circuit (10D).

[0048] (4) Heat source unit structure The detailed configuration of the heat source unit (1) will be described with reference to Figures 2 to 7. In the following description, terms such as "front," "rear," "right," "left," "upper," and "lower" are based on the directions indicated by the arrows in Figure 2. In the following description, the first direction corresponds to the horizontal left-right direction, the second direction corresponds to the horizontal front-rear direction, and the third direction corresponds to the vertical up-down direction.

[0049] (4-1) Casing The heat source unit (1) has a hollow casing (40). The casing (40) is formed to be long in the horizontal direction (first direction) such that its length in the left-right direction (first direction) is greater than its length in the front-rear direction (second direction). As shown in Fig. 5, when viewed from the first direction, the casing (40) has a shape in which its upper part is wider in the front-rear direction.

[0050] The casing (40) has a lower housing portion (41) and an upper housing portion (42). 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 higher than the lower housing portion (41). A first chamber, i.e., a machine chamber (S1), is formed inside the lower housing portion (41). A second chamber, i.e., a blower chamber (S2), is formed inside the upper housing portion (42). The lower housing portion (41) has a main body portion (41a) having a rectangular parallelepiped outer shape and an extension portion (41b) extending outward in a first direction (rightward) from the right end of the main body portion (41a). The extension portion (41b) has a right side plate (41c) that forms the right side surface of the lower housing portion (41). The right side plate (41c) is an example of a first side surface (41c) of the present disclosure. The right side plate (41c) is provided with ports (51, 52) to which a water pipe (62) described below is connected. The ports (51, 52) include a first port (51) and a second port (52). The first port (51) is located rearward in the upper part of the right side plate (41c). The second port (52) is located frontward in the lower part of the right side plate (41c).

[0051] The casing (40) has a plurality of frames and a plurality of outer plates that are detachably attached to the frames. The frames are a framework for fixing the outer plates of the casing (40). The frames form supports or beams. The frames function as reinforcing members that reinforce the casing (40). The outer plates isolate the inside and outside of the casing (40). The frames and outer plates are made of metal materials such as iron or aluminum.

[0052] As shown in FIGS. 2 to 4, the lower housing portion (41) has a first horizontal frame (Fa1), a second horizontal frame (Fa2), a third horizontal frame (Fa3), and a fourth horizontal frame (Fa4) as frames. These horizontal frames are formed in the shape of long plates extending in a first direction. In other words, the first direction is the longitudinal direction of these horizontal frames. The first horizontal frame (Fa1) is located at the lower end of the front surface of the lower housing portion (41). The second horizontal frame (Fa2) is located at the upper end of the front surface of the lower housing portion (41). The third horizontal frame (Fa3) is located at the lower end of the rear surface of the lower housing portion (41). The fourth horizontal frame (Fa4) is located at the upper end of the rear surface of the lower housing portion (41).

[0053] The lower housing portion (41) has a plurality of first vertical frames (Fb1) and a plurality of second vertical frames (Fb2) as frames. These vertical frames are formed in the shape of long plates extending in the third direction, which is the vertical direction. In other words, the third direction is the longitudinal direction of these vertical frames. The first vertical frame (Fb1) is located on the front surface of the casing (40) and extends from the first horizontal frame (Fa1) to the second horizontal frame (Fa2). The second vertical frame (Fb2) is located on the rear surface of the casing (40) and extends from the first horizontal frame (Fa1) to the second horizontal frame (Fa2).

[0054] The lower housing portion (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 the lower rear plates (P2) are formed in a rectangular plate shape. The lower front plate (P1) is located on the front surface of the lower housing portion (41). The lower front plate (P1) is detachably attached to the first horizontal frame (Fa1), the second horizontal frame (Fa2), and the first vertical frame (Fb1). The lower rear plate (P2) is located on the rear surface of the lower housing portion (41). The lower rear plate (P2) is detachably attached to the third horizontal frame (Fa3), the fourth horizontal frame (Fa4), and the second vertical frame (Fb2).

[0055] The upper housing portion (42) has a fifth horizontal frame (Fa5), a sixth horizontal frame (Fa6), a seventh horizontal frame (Fa7), and an eighth horizontal frame (Fa8) as frames. These horizontal frames are formed in the shape of long plates extending in the first direction. In other words, the first direction is the longitudinal direction of these horizontal frames. The fifth horizontal frame (Fa5) is located at the lower end of the front surface of the upper housing portion (42). The sixth horizontal frame (Fa6) is located near the upper end of the front surface of the upper housing portion (42). The seventh horizontal frame (Fa7) is located at the lower end of the rear surface of the upper housing portion (42). The eighth horizontal frame (Fa8) is located near the upper end of the rear surface of the upper housing portion (42).

[0056] The upper housing portion (42) has a frame including a first intermediate vertical frame (Fc1), a second intermediate vertical frame (Fc2), a third intermediate vertical frame (Fc3), a fourth intermediate vertical frame (FC4), a fifth intermediate vertical frame (Fc5), a sixth intermediate vertical frame (Fc6), a seventh intermediate vertical frame (Fc7), and an eighth intermediate vertical frame (Fc8).

[0057] The first intermediate vertical frame (Fc1) is located at the left end of the front surface of the upper housing portion (42), and the second intermediate vertical frame (Fc2) is located at the right end of the front surface of the upper housing portion (42). The third intermediate vertical frame (Fc3) and the fourth intermediate vertical frame (FC4) are located in the middle of the front surface of the upper housing portion (42) in the left-right direction. The third intermediate vertical frame (Fc3) is closer to the left end of the upper housing portion (42) than the fourth intermediate vertical frame (FC4). The first intermediate vertical frame (Fc1), the second intermediate vertical frame (Fc2), the third intermediate vertical frame (Fc3), and the fourth intermediate vertical frame (FC4) are inclined so that they approach the front as they extend upward. In other words, the first intermediate vertical frame (Fc1), the second intermediate vertical frame (Fc2), the third intermediate vertical frame (Fc3), and the fourth intermediate vertical frame (FC4) are inclined so that they face diagonally downward.

[0058] The fifth intermediate vertical frame (Fc5) is located at the left end of the rear surface of the upper housing portion (42), and the sixth intermediate vertical frame (Fc6) is located at the right end of the rear surface of the upper housing portion (42). The seventh intermediate vertical frame (Fc7) and the eighth intermediate vertical frame (Fc8) are located in the middle of the rear surface of the upper housing portion (42) in the left-right direction. The seventh intermediate vertical frame (Fc7) is closer to the left end of the upper housing portion (42) than the eighth intermediate vertical frame (Fc8). The fifth intermediate vertical frame (Fc5), the sixth intermediate vertical frame (Fc6), the seventh intermediate vertical frame (Fc7), and the eighth intermediate vertical frame (Fc8) are inclined so that they approach the rear as they extend upward. In other words, the fifth intermediate vertical frame (Fc5), the sixth intermediate vertical frame (Fc6), the seventh intermediate vertical frame (Fc7), and the eighth intermediate vertical frame (Fc8) are inclined so that they face diagonally downward.

[0059] In the upper housing portion (42), a first suction port (I1) is formed between the fifth horizontal frame (Fa5), the sixth horizontal frame (Fa6), the first intermediate vertical frame (Fc1), and the third intermediate vertical frame (Fc3), and a second suction port (I2) is formed between the fifth horizontal frame (Fa5), the sixth horizontal frame (Fa6), the fourth intermediate vertical frame (FC4), and the second intermediate vertical frame (Fc2). In the upper housing portion (42), a third suction port (I3) is formed between the sixth horizontal frame (Fa6), the seventh horizontal frame (Fa7), the fifth intermediate vertical frame (Fc5), and the seventh intermediate vertical frame (Fc7), and a fourth suction port (I4) is formed between the sixth horizontal frame (Fa6), the seventh horizontal frame (Fa7), the eighth intermediate vertical frame (Fc8), and the sixth intermediate vertical frame (Fc6).

[0060] As shown in FIG. 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 portion (41) and the upper housing portion (42). These reinforcing frames extend in the left-right direction (first direction). In other words, the first direction is the longitudinal direction of these reinforcing frames. 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 portion (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 portion (42).

[0061] As shown in FIGS. 2 to 4, the casing (40) has a top plate (43) that forms the upper surface thereof. The top plate (43) is formed in a rectangular plate shape. A plurality of air outlets are formed in the top plate (43). Each air outlet is formed in a circular shape. The plurality of air outlets are arranged side by side in a first direction. In this example, the top plate (43) is formed with a first air outlet (O1), a second air outlet (O2), a third air outlet (O3), and a fourth air outlet (O4) in this order from the left end to the right end.

[0062] 6, the casing (40) has a bottom plate (44) that forms the lower surface of the casing (40). The bottom plate (44) is shaped like a rectangular plate. The bottom plate (44) forms the bottom surface of the machine chamber (S1).

[0063] An intermediate plate (45) is formed inside the casing (40). The intermediate plate (45) is formed in a rectangular plate shape. The intermediate plate (45) divides the interior space of the casing (40) into upper and lower spaces. The space below the intermediate plate (45) is a machine chamber (S1), and the space above the intermediate plate (45) is a blower chamber (S2). The intermediate plate (45) forms the bottom surface of the blower chamber (S2).

[0064] As shown in FIGS. 3 and 4, a partition plate (46) is provided inside the upper housing portion (42). The partition plate (46) forms a vertical wall extending in the third direction. The partition plate (46) divides the interior space of the upper housing portion (42) into left and right sections. The space to the left of the partition plate (46) is a first fan chamber (S2A) serving as a fan chamber, and the space to the right of the partition plate (46) is a second fan chamber (S2B) serving as a fan chamber. The first fan chamber (S2A) communicates with the first suction port (I1), the third suction port (I3), the first outlet (O1), and the second outlet (O2). The second fan chamber (S2B) communicates with the second air inlet (I2), the fourth air inlet (I4), the third air outlet (O3), and the fourth air outlet (O4).

[0065] (4-2) Configuration of each equipment in the blower room As shown in FIGS. 2 to 4, air heat exchangers (12A, 12B, 12C, 12D) are arranged in the fan chamber (S2). Specifically, the first fan chamber (S2A) is arranged with the first air heat exchanger (12A) and the third air heat exchanger (12C), and the second fan chamber (S2B) is arranged with the second air heat exchanger (12B) and the fourth air heat exchanger (12D). The first air heat exchanger (12A) is arranged on the far side of the first air inlet (I1), the second air heat exchanger (12B) is arranged on the far side of the second air inlet (I2), the third air heat exchanger (12C) is arranged on the far side of the third air inlet (I3), and the fourth air heat exchanger (12D) is arranged on the far side of the fourth air inlet (I4). The heat transfer tubes of the air heat exchangers (12A, 12B, 12C, 12D) extend in the first direction. As shown in Fig. 6, the air heat exchangers (12A, 12B, 12C, 12D) are inclined so as to approach the outside in the widthwise direction of the casing (40) as they go upward.

[0066] As shown in Fig. 2, a first fan (5A), a second fan (5B), a third fan (5C), and a fourth fan (5D) are arranged in the upper space of the blower chamber (S2). The first fan (5A) is arranged below the first air outlet (O1), the second fan (5B) is arranged below the second air outlet (O2), the third fan (5C) is arranged below the third air outlet (O3), and the fourth fan (5D) is arranged below the fourth air outlet (O4). These fans are configured as propeller fans.

[0067] (4-3) Configuration of each equipment in the machine room As shown in Figure 7, the machine room (S1) is provided with, from left to right, a first unit (U1), a second unit (U2), a third unit (U3), and a fourth unit (U4). The machine room (S1) also has a water heat exchanger unit (U5) located to the right of the fourth unit (U4). The water heat exchanger unit (U5) will be described later.

[0068] The first unit (U1) includes each element device of the first refrigerant circuit (10A) and a first system electrical component box (6A) for controlling each element device. The element devices of the first refrigerant circuit (10A) include a first compressor (11A), a first accumulator (15A), and a 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 system electrical equipment box (6B), the third unit (U3) includes a third compressor (11C), a third accumulator (15C), a third subcooling heat exchanger (14C), and a third system electrical equipment 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 system electrical equipment box (6D).

[0069] 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 arranged closer to the front side 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 arranged in an intermediate portion of the casing (40) in the second direction. The first subcooling heat exchanger (14A), the second subcooling heat exchanger (14B), the third subcooling heat exchanger (14C), and the fourth subcooling heat exchanger (14D) are arranged side by side in the first direction. These subcooling heat exchangers are arranged closer to the front side of the casing (40). Each electrical component box accommodates an inverter device or the like for adjusting the rotation speed of the corresponding compressor (11A, 11B, 11C, 11D). These electrical component boxes are arranged side by side in the first direction. These electrical component boxes are arranged near the rear side of the casing (40).

[0070] The machine room (S1) is provided with 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 disposed near the other end (right end) of the machine room (S1) in the first direction. The first water heat exchanger (31) is disposed near the rear side of the casing (40), and the second water heat exchanger (32) is disposed near the front side of the casing (40). The first water heat exchanger (31) and the second water heat exchanger (32) are disposed side by side in the second direction. The pump (33) is disposed to the right of the first water heat exchanger (31). The first water heat exchanger (31) and the pump (33) are disposed side by side in the first direction.

[0071] The heat source unit (1) has an operating-side electrical component box (7) and a pump-side electrical component box (8). The operating-side electrical component box (7) is arranged at one end (left end) of the machine room (S1) in the first direction. The operating-side electrical component box (7) houses a control board for switching the operation of the heat source unit (1), etc. The pump-side electrical component box (8) is arranged at the other end (right end) of the machine room (S1) in the first direction. The pump-side electrical component box (8) is housed in the casing (40) and is arranged near the front side of the casing (40). The pump (33) and the pump-side electrical component box (8) are arranged side by side in the second direction. The pump-side electrical component box (8) is an example of an electrical component box (8) that houses a predetermined electrical component of the present disclosure. The predetermined electrical component is an electrical component that controls the pump (33). Specifically, a pump inverter device for adjusting the rotation speed of the pump (33) and the like are disposed in the pump-side electrical component box (8).

[0072] (5) Driving behavior The cooling operation of the heat source unit (1) will be described. An example in which all the refrigerant circuits (10) are operating will be described below. In the 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 flow path (L1) of the first subcooling heat exchanger (14A). The remaining portion of the refrigerant is decompressed by the cooling expansion valve (25) of the injection pipe (22) and then flows through the second liquid flow path (L2). In the first subcooling heat exchanger (14A), the refrigerant in the first liquid flow path (L1) is cooled by the refrigerant in the second liquid flow path (L2). The refrigerant in the second liquid flow path (L2) is drawn into the intermediate pressure section of the first compressor (11A). The refrigerant cooled in the first liquid flow path (L1) passes through the liquid pipe (21) and flows through the first refrigerant flow path (R1) of the first water heat exchanger (31). In the first water heat exchanger (31), the refrigerant in the first refrigerant flow path (R1) absorbs heat from the water in the first water flow path (W1) and evaporates. The refrigerant evaporated in the first water heat exchanger (31) passes through the first accumulator (15A) and is then sucked into the first compressor (11A).

[0073] The second refrigerant circuit (10B), the third refrigerant circuit (10C), and the fourth refrigerant circuit (10D) operate in the same refrigeration cycle.

[0074] In the water circuit (30), water delivered by the pump (33) flows through the first water flow path (W1) of the first water heat exchanger (31). In the first water heat exchanger (31), the water in the first water flow path (W1) is cooled by the refrigerant in the first refrigerant flow path (R1) and the second refrigerant flow path (R2). The water flowing out of the first water heat exchanger (31) flows through the second water flow path (W2) of the second water heat exchanger (32). In the second water heat exchanger (32), the water in the second water flow path (W2) is cooled by the refrigerant in the third refrigerant flow path (R3) and the fourth refrigerant flow path (R4). The water cooled in this manner is used as a cold heat source for air conditioning.

[0075] (6) Water heat exchanger unit The water heat exchanger unit (U5) includes water heat exchangers (31, 32), water pipes (61, 62, 63), a pump (33), a pump-side electrical component box (8), and a support member (100). The water pipes (61, 62, 63), the pump-side electrical component box (8), and the support member (100) will be described in detail below.

[0076] (6-1) Water piping As shown in FIG. 8, the heat source unit (1) includes a first water pipe (61), a second water pipe (62), and a relay water pipe (63). The first water pipe (61), the second water pipe (62), and the relay water pipe (63) are housed in a casing (40). The first water pipe (61), the second water pipe (62), and the relay water pipe (63) form a water circuit (30) (see FIG. 1). The heat source unit (1) includes a heat insulating member (HI) that covers the outer circumferential surface of each water pipe (61, 62, 63). The heat insulating member (HI) is not particularly limited as long as it is made of a material that has the effect of insulating each water pipe (61, 62, 63) from the outside, and for example, polyurethane or the like is used.

[0077] The first water pipe (61) is a water pipe through which water flows from the water circuit (30) into the water heat exchangers (31, 32). The pump (33) is connected to the first water pipe (61). The first water pipe (61) is disposed toward the rear in the casing (40). The first water pipe (61) is provided to extend from the first water heat exchanger (31) to the right side plate (41c). Specifically, one end of the first water pipe (61) is connected to an upper portion of the first water heat exchanger (31), and the other end is connected to the first port (51). The first water pipe (61) is connected to the first water heat exchanger (31) by a connecting member (59). The first water pipe (61) is detachable from the first water heat exchanger (31).

[0078] The second water pipe (62) is a water pipe (62) connected to the second water heat exchanger (32). The second water pipe (62) is an example of the water pipe (62) disclosed herein. The second water heat exchanger (32) is an example of the water heat exchanger (31, 32) disclosed herein. The second water pipe (62) is disposed toward the front of the casing (40). The second water pipe (62) extends substantially horizontally (in the first direction) from the second water heat exchanger (32) to the right side plate (41c). Specifically, one end of the second water pipe (62) is connected to the lower part of the second water heat exchanger (32), and the other end is connected to the second port (52). The second water pipe (62) is connected to the second water heat exchanger (32) by a connecting member (59). The second water pipe (62) is detachable from the second water heat exchanger (32). A support member (100) (to be described later) for supporting the pump-side electrical component box (8) is attached to the second water pipe (62).

[0079] The relay water pipe (63) is a water pipe connecting the first water heat exchanger (31) and the second water heat exchanger (32). The water that has undergone heat exchange in the first water heat exchanger (31) flows into the second water heat exchanger (32) through the relay water pipe (63) and is again heat exchanged in the second water heat exchanger (32). One end of the relay water pipe (63) is connected to the lower part of the first water heat exchanger (31), and the other end is connected to the upper part of the second water heat exchanger (32). The relay water pipe (63) is connected to the first water heat exchanger (31) and the second water heat exchanger (32) by a connecting member (59). The relay water pipe (63) is detachable from the first water heat exchanger (31) and the second water heat exchanger (32).

[0080] (6-2) Pump side electrical equipment box As shown in Fig. 9, the pump side electrical component box (8) is disposed above the second water pipe (62). The pump side electrical component box (8) is formed in a rectangular parallelepiped shape. The bottom surface of the pump side electrical component box (8) is formed in a rectangular shape, and the direction in which the long sides of the bottom surface extend coincides with the extension direction of the second water pipe (62). In this way, the pump side electrical component box (8) is disposed so that its longitudinal direction coincides with the extension direction of the second water pipe (62).

[0081] 9 and 10, a first mounting portion (34) having a long plate shape extending in the vertical direction is provided on the left side surface of the pump side electrical component box (8). The first mounting portion (34) is a member for fixing an upper portion of the pump side electrical component box (8) to the casing (40). The first mounting portion (34) is located near the front end of the left side surface of the pump side electrical component box (8).

[0082] The first mounting portion (34) is formed so that its cross section perpendicular to the longitudinal direction thereof is L-shaped. Specifically, the first mounting portion (34) has a first plate portion (34a) extending leftward from the left side surface of the pump-side electrical component box (8) and a second plate portion (34b) extending rearward from the left end of the first plate portion (34a). The first mounting portion (34) extends from a height position approximately at the center of the left side surface of the electrical component box (8) to the upper end. Two mounting holes aligned vertically are formed in the first plate portion (34a) of the first mounting portion (34). These mounting holes are holes through which fastening members (B) are inserted to fasten the first mounting portion (34) to the left-side fixing member (71) fixed to the second horizontal frame (Fa2). The fastening members (B) are, for example, screws or bolts.

[0083] 9 and 11, a second mounting portion (35) having a long plate shape extending in the vertical direction is provided on the right side surface of the pump side electrical component box (8). The second mounting portion (35) is a member for fixing the upper portion and the right side surface of the pump side electrical component box (8) to the casing (40). The second mounting portion (35) is located near the front end of the right side surface of the pump side electrical component box (8).

[0084] The second mounting portion (35) is formed so that its cross section perpendicular to the longitudinal direction thereof is L-shaped. Specifically, the second mounting portion (35) has a third plate portion (35a) extending rightward from the right side surface of the pump-side electrical component box (8) and a fourth plate portion (35b) extending rearward from the right end of the third plate portion (35a). The third plate portion (35a) and the fourth plate portion (35b) of the first mounting portion (34) are formed with a plurality of mounting holes aligned in the vertical direction. The mounting hole formed in the third plate portion (35a) is a hole through which a fastening member (B) is inserted to fasten the second mounting portion (35) to a right-side fixing member (72) fixed to the second horizontal frame (Fa2). The mounting hole formed in the fourth plate portion (35b) is a hole through which a fastening member (B) is inserted to fasten the second mounting portion (35) to a connecting member (59) described later.

[0085] As shown in FIGS. 9 and 12 , the pump-side electrical component box (8) is provided with a third mounting portion (36) that is fixed to a support member (100) described below. The third mounting portion (36) is formed in a plate shape that extends leftward from the lower end of the left side surface of the pump-side electrical component box (8). The height position of the lower end of the left side surface of the pump-side electrical component box (8) is lower than the bottom plate of the pump-side electrical component box (8). The third mounting portion (36) is formed integrally with the left side surface of the pump-side electrical component box (8). The third mounting portion (36) has a plurality of mounting holes that are aligned in the front-rear direction. These mounting holes are holes through which fastening members are inserted to fasten the third mounting portion (36) to the support member (100).

[0086] A plurality of relatively small holes (not shown) are formed over the entire surface of the bottom plate of the pump-side electrical equipment box (8). These holes are ventilation holes for allowing air heated inside the pump-side electrical equipment box due to heat generated by the electrical components to escape to the outside.

[0087] (6-3) Support member As shown in Figures 9, 12, and 13, the heat source unit (1) has a support member (100). The support member (100) is fixed to the second water pipe (62) and supports the pump-side electrical component box (8) from below. The support portion (100) of this embodiment supports the lower portion of the pump-side electrical component box (8). The support member (100) is an example of the support portion (100) of the present disclosure.

[0088] The support member (100) is formed by stacking a plurality of plate-shaped members. The support member (100) has an opening (110) formed so that the second water pipe (62) fits therein. Note that in this embodiment, the second water pipe (62) wrapped with the heat insulating member (HI) may be simply referred to as the "second water pipe (62)."

[0089] The opening (110) is composed of a first opening (111) and a second opening (112) described below. The opening (110) opens downward from the support member (100). As described above, the support member (100) is formed in a gate shape when viewed from the stacking direction. The support member (100) will be described in detail below.

[0090] The support member (100) includes a metal plate member (120) and plate-like elastic members (131, 132). The plate member (120) is formed so that its longitudinal cross section is L-shaped. Specifically, the plate member (120) has a fifth plate portion (120a) fixed to the third mounting portion (36) and a sixth plate portion (120b) fixed to the second water pipe (62). The sixth plate portion (120b) is an example of the plate portion (120b) of the present disclosure.

[0091] The fifth plate portion (120a) is formed to extend generally horizontally so that its plate surface is in contact with the plate surface of the third mounting portion (36). Two mounting holes aligned in the front-to-rear direction are formed in the fifth plate portion (120a). These mounting holes are holes through which fastening members for fastening the fifth plate portion (120a) to the third mounting portion (36) are inserted.

[0092] A first opening (111) is formed in the sixth plate portion (120b) (see FIG. 13). The first opening (111) is formed in a rectangular shape by cutting out the sixth plate portion (120b) from the upper portion downward. Specifically, the first opening (111) is formed by a pair of first linear portions (121) extending in the vertical direction and parallel to each other, and a second linear portion (122) connecting the upper ends of the first linear portions (121).

[0093] The opening width of the first opening (111) in the front-to-rear direction is equal to the distance D1 between the pair of first straight portions (121). The opening width D1 of the first opening (111) in the front-to-rear direction is equal to or greater than the outer diameter R1 of the second water pipe (62). Note that the outer diameter R1 of the second water pipe (62) here refers to a length including the thickness of the heat insulating member (HI) that covers the outer peripheral surface of the second water pipe (62). Unless otherwise specified, hereinafter, the "outer diameter R1 of the second water pipe (62)" refers to the length obtained by adding the outer diameter of the second water pipe (62) to the thickness of the heat insulating member (HI). The length of the first opening (111) in the up-down direction is equal to or greater than the outer diameter R1 of the second water pipe (62).

[0094] The elastic members (131, 132) are formed in the shape of relatively thick plates. The elastic members (131, 132) are thicker than the sixth plate portion (120b). The elastic members (131, 132) are made of, for example, ethylene propylene diene rubber (EPDM). The elastic members (131, 132) include a first elastic member (131) and a second elastic member (132). The first elastic member (131) is bonded to the left side surface of the sixth plate portion (120b). The second elastic member (132) is bonded to the right side surface of the sixth plate portion (120b). In this way, the support member (100) is configured such that the sixth plate portion (120b) is sandwiched between the two elastic members (131, 132) in the thickness direction of the sixth plate portion (120b).

[0095] An inverted U-shaped second opening (112) is formed in each elastic member (131, 132) (see FIG. 13). The second opening (112) constitutes the opening (110). When viewed from the stacking direction of the sixth plate portion (120b) and the elastic members (131, 132), the second opening (112) is formed to overlap the first opening (111). The second opening (112) is formed by cutting out each elastic member (131, 132) from its upper portion downward. The second opening (112) has a semicircular curved portion (123), a pair of third linear portions (124) extending downward from both ends of the curved portion (123), and a pair of tapered portions (125) extending downward from the lower ends of each third linear portion (124).

[0096] The second opening (112) of this embodiment is formed inside the first opening (111). Specifically, the curved portion (123) is disposed below the second straight portion (122). The opening width D2 of the second opening (112) is smaller than the opening width D1 of the first opening (111). The opening width D2 of the second opening matches the distance between the pair of third straight portions (124). The opening width D2 of the second opening (112) is smaller than the outer diameter R1 of the second water pipe (62) and larger than the outer diameter R0 of the second water pipe (62) without the heat insulating member (HI) wrapped around it. The height position of the lower end of the tapered portion (125) is higher than the lower end of the first opening (111). The tapered portion (125) guides the second water pipe (62) toward the inside of the opening (110) when the support member (100) is inserted into the second water pipe (62).

[0097] (7) Installation of the pump side electrical equipment box Next, the mounting state of the pump side electrical component box (8) in the casing (40) will be described with reference to FIGS. 19 to 12. The pump side electrical component box (8) is supported from below by a support member (100), and the top and side of the pump side electrical component box (8) are fixed to the casing (40). In this embodiment, the left end, which is one longitudinal end of the pump side electrical component box (8), is supported from below by the support member (100). The side surface of the right end, which is the other longitudinal end of the pump side electrical component box (8), is fixed to the casing (40). In addition, the tops of the left and right ends of the pump side electrical component box (8) are fixed to the casing (40).

[0098] (7-1) Fixing the top of the pump side electrical equipment box 9 to 11, the upper part of the pump-side electrical component box (8) is connected to a left fixing member (71) and a right fixing member (72) extending in the vertical direction. The upper ends of the left fixing member (71) and the right fixing member (72) are fixed to the second horizontal frame (Fa2).

[0099] The left-side fixing member (71) fixes the first mounting portion (34). The left-side fixing member (71) is formed so that its cross section perpendicular to its longitudinal direction is L-shaped. Specifically, the left-side fixing member (71) has a seventh plate portion (71a) and an eighth plate portion (71b) extending in the vertical direction. A mounting hole for fastening the first plate portion (34a) of the first mounting portion (34) is formed in the eighth plate portion (71b). A fastening member is inserted into this mounting hole to fix the first mounting portion (34) to the left-side fixing member (71).

[0100] The right-side fixing member (72) fixes the second mounting portion (35). The right-side fixing member (72) is formed so that its cross section perpendicular to the longitudinal direction is L-shaped. Specifically, the right-side fixing member (72) has a ninth plate portion (72a) and a tenth plate portion (72b) extending in the vertical direction. The ninth plate portion (72a) has a mounting hole formed therein for fastening the third plate portion (35a) of the second mounting portion (35). The second mounting portion (35) is fixed to the right-side fixing member (72) by inserting a fastening member (B) into this mounting hole.

[0101] In this way, the first mounting portion (34) is fixed to the left fixing member (71) and the second mounting portion (35) is fixed to the right fixing member (72), so that the upper part of the pump side electrical component box (8) is fixed to the casing (40).

[0102] (7-2) Fixing the side of the pump side electrical equipment box 9 and 11, the right side surface of the pump-side electrical component box (8) is fixed to the casing (40) via a connecting member (59). The connecting member (59) is a member that connects the second mounting portion (35) and the first vertical frame (Fb1). The second mounting portion (35) is disposed adjacent to the first vertical frame (Fb1). The connecting member connects the second mounting portion (35) and the first vertical frame (Fb1), thereby fixing the second mounting portion (35) to the first vertical frame (Fb1).

[0103] Specifically, the connecting member (59) has a first connecting plate (59a) and a second connecting plate (59b) extending in the vertical direction. The connecting member (59) is formed so that its cross section perpendicular to the longitudinal direction is L-shaped. The first connecting plate (59a) has a mounting hole formed therein for fastening to the fourth plate (35b) of the second mounting portion (35). The second connecting plate (59b) has a mounting hole formed therein for fastening to the first vertical frame (Fb1). The second mounting portion (35) and the first vertical frame (Fb1) are fastened to the connecting member (59) by inserting the fastening member (B) into each mounting hole. In this manner, the right side surface of the pump-side electrical component box (8) is fixed to the casing (40).

[0104] (7-3) Support for the bottom of the pump-side electrical equipment box 9, 12, and 13, the support member (100) is attached to the second water pipe (62) so that the openings (110) sandwich the second water pipe (62) from above. At this time, the thickness direction of the sixth plate portion (120b) coincides with the extension direction of the second water pipe (62).

[0105] As described above, the opening width D2 of the second opening (112) is smaller than the outer diameter R1 of the second water pipe (62) and larger than the outer diameter R0 of the second water pipe (62) without the heat insulating member (HI) wrapped around it. The opening width D1 of the first opening (111) is larger than the outer diameter R1 of the second water pipe (62). Therefore, when the second opening (112) of the elastic members (131, 132) comes into contact with the outer circumferential surface of the second water pipe (62) when the support member (100) is fitted into the second water pipe (62), the outer circumferential surface of the second water pipe (62) is pressed by the elastic members (131, 132), and the second opening (112) comes into close contact with the heat insulating member (HI) covering the second water pipe (62). In this manner, the support member (100) comes into contact with the second water pipe (62) via the elastic members (131, 132).

[0106] The fifth plate portion (120a) of the support member (100) is fastened to the third mounting portion (36) of the pump-side electrical component box (8) by the fastening member (B). Since the third mounting portion (36) is provided at the lower end of the left side surface of the pump-side electrical component box (8), the support member (100) supports the pump-side electrical component box (8) from the lower left.

[0107] (8) Features (8-1) Feature 1 The heat source unit (1) of this embodiment includes a water heat exchanger (31, 32) that exchanges heat between a refrigerant and water, a second water pipe (62) connected to the water heat exchanger (31, 32), a pump side electrical equipment box (8) that houses electrical components for the pump, a casing (40) that houses the second water pipe (62) and the pump side electrical equipment box (8), and a support member (100) that is fixed to the second water pipe (62) and supports the pump side electrical equipment box (8) from below.

[0108] As a result, by supporting the pump side electrical equipment box (8) from below, the fixation and installation stability of the pump side electrical equipment box (8) within the casing (40) are improved compared to, for example, fixing the pump side electrical equipment box (8) so as to hang it from above or fixing the side of the pump side electrical equipment box (8).

[0109] (8-2) Feature 2 The support member (100) of this embodiment has an opening (110) into which the second water pipe (62) fits. This allows the support member (100) to be fixed to the second water pipe (62) so that the opening (110) is in close contact with the second water pipe (62) (in this embodiment, the second water pipe (62) wrapped around the heat insulating member (HI)).

[0110] (8-3) Feature 3 The opening (110) of the support member (100) of this embodiment is formed in a gate shape that opens downward of the support member (100). As a result, the support member (100) is fixed to the second water pipe (62) by fitting it from above, so that the pump-side electrical component box (8) can be stably supported from below, thereby improving the fixation of the pump-side electrical component box (8). In addition, when attaching the support member (100) to the second water pipe (62), fastening work using screws or bolts is not required, thereby reducing the number of installation steps.

[0111] (8-4) Feature 4 The support member (100) of this embodiment has elastic members (131, 132). The elastic members (131, 132) are formed with second openings (112) that constitute the opening (110), and the support member (100) comes into contact with the second water pipe (62) via the elastic members (131, 132). The opening width of the second opening (112) is smaller than the outer diameter of the second water pipe (62). Therefore, when the second water pipe (62) is inserted into the second opening (112), the second water pipe (62) is pressed by the second opening (112). In this manner, pressure is applied by the elastic members (131, 132) to the second water pipe (62) fitted in the opening (110), and the elastic members (131, 132) come into close contact with the second water pipe (62), improving the fixation of the support member (100) to the second water pipe (62).

[0112] (8-5) Feature 5 The support member 100 of this embodiment has a sixth plate portion 120b (plate portion 120b) in which the opening 110 is formed. The thickness direction of the sixth plate portion 120b coincides with the extension direction of the second water pipe 62. In other words, the support member 100 is attached to the second water pipe 62 so that the plate surface of the sixth plate portion 120b is perpendicular to the extension direction of the second water pipe 62. In this way, the support member 100 can be easily attached to the second water pipe 62.

[0113] (8-6) Feature 6 The support member (100) of this embodiment is configured such that the sixth plate portion (120b) is sandwiched between two elastic members (131, 132) in the thickness direction. In this embodiment, the sixth plate portion (120b) is a relatively thin plate, and therefore the two relatively thick elastic members (131, 132) are disposed on both sides of the sixth plate portion (120b) in the thickness direction, thereby increasing the overall thickness of the support member (100). This allows the support member (100) to be stably fixed on the second water pipe (62).

[0114] (8-7) Feature 7 In this embodiment, the pump side electrical component box (8) is fixed to the casing (40). In this manner, the pump side electrical component box (8) is not only supported by the support member (100) but also fixed to the casing (40), so that the pump side electrical component box (8) can be stably fixed in the casing (40).

[0115] (8-8) Feature 8 The pump side electrical component box (8) of this embodiment is formed in a rectangular parallelepiped shape. The direction in which the long sides of the bottom surface of the pump side electrical component box (8) extend coincides with the extension direction of the second water pipe (62). In this way, the space above the second water pipe (62) can be used more effectively than in the case where the direction in which the short sides of the bottom surface of the pump side electrical component box (8) extend coincides with the extension direction of the second water pipe (62).

[0116] (8-9) Feature 9 In this embodiment, one longitudinal end of the pump side electrical component box (8) is supported from below by the support member (100), and the side surface of the other longitudinal end of the pump side electrical component box (8) is fixed to the casing (40). In this manner, since one and the other longitudinal ends of the pump side electrical component box (8) are fixed, the pump side electrical component box (8) can be stably fixed within the casing (40).

[0117] (8-10) Feature 10 In this embodiment, one longitudinal end of the pump side electrical component box (8) is supported from below by a support member (100), and the upper part of the pump side electrical component box (8) is fixed to the casing (40). Since the lower and upper parts of the pump side electrical component box (8) are fixed in this manner, the pump side electrical component box (8) can be stably fixed within the casing (40).

[0118] (8-11) Feature 11 In this embodiment, the first side surface (41c) of the casing (40) is provided with ports (51, 52) to which the second water pipe (62) is connected, and the support member (100) is disposed closer to the second water heat exchanger (32) than the first side surface (41c). Specifically, the support member (100) is provided at the left end of the pump-side electrical component box (8) and is disposed between the water heat exchangers (31, 32) and the pump-side electrical component box (8). This configuration prevents the pump-side electrical component box (8) from getting wet, even if water sprays out from the second water heat exchanger (32) when the second water pipe (62) is removed from the second water heat exchanger (32), for example, by the support member (100) acting as a barrier. In particular, in this embodiment, a plurality of ventilation holes are formed on the underside of the pump side electrical equipment box (8), and the sixth plate portion (120b) extending downward from the left end of the underside of the pump side electrical equipment box (8) acts as a barrier to prevent the underside of the pump side electrical equipment box (8) from getting wet and to prevent water from entering the pump side electrical equipment box (8) through the holes on the underside.

[0119] (8-12) Feature 12 The heat source unit (1) of this embodiment includes a heat insulating member (HI) that covers the outer peripheral surface of the second water pipe (62), and the support member (100) is connected to the second water pipe (62) via the heat insulating member (HI). The heat insulating member (HI) can prevent heat from the second water pipe (62) from being transmitted to the pump-side electrical component box (8). This protects the electrical components in the pump-side electrical component box (8).

[0120] (8-13) Feature 13 The heat source unit (1) of this embodiment includes a pump (33) that is provided in the casing (40) and transports water flowing through the water pipe (62). Electrical components that control the pump (33) are disposed in the pump-side electrical component box (8). In this manner, in this embodiment, the pump-side electrical component box (8) can be disposed near the water heat exchangers (31, 32).

[0121] (9) Other embodiments The above-described embodiment may have the following configuration.

[0122] The water heat exchangers (31, 32) may exchange heat with a heat medium other than the refrigerant. That is, the heat source unit (1) may include the water heat exchangers (31, 32) that exchange heat with a heat medium other than the refrigerant.

[0123] The heat source unit (1) of this embodiment is a chilling unit dedicated to cooling that produces cold water. However, the heat source unit (1) may also be a so-called heat pump type chilling unit that produces both cold water and hot water. The heat source unit (1) may also be a hot water supply heat source unit that produces hot water.

[0124] The number of water heat exchangers (31, 32) may be one or three or more.

[0125] The heat source unit (1) may be configured so that the water heat exchanger unit (U5) and other components are separate bodies, in which case the casing of the present disclosure houses only the water heat exchanger unit (U5).

[0126] The support member (100) may be formed integrally with the pump side electrical component box (8). In this case, the support member (100) is provided as a support portion (100) on the pump side electrical component box (8). For example, the lower end of the left side surface of the pump side electrical component box (8) extends downward below the bottom of the pump side electrical component box (8), and an opening (110) into which the second water pipe (62) fits is formed at the lower end of the left side surface.

[0127] The electrical component box arranged in the water heat exchanger unit (U5) is not limited to the pump-side electrical component box (8), but may be an electrical component box that accommodates electrical components other than those that operate the pump (33).

[0128] The support portion (100) or the support member (100) need only support the electrical component box (8) from below, and does not have to be located at the left end of the electrical component box (8).

[0129] The support part (100) or the support member (100) may have only one elastic member (131, 132), three or more elastic members (131, 132), or none at all.

[0130] The shape of the support portion 100 or the support member 100 does not have to be a gate shape. There are no limitations on the shape of the support portion 100 or the support member 100 as long as it is fixed to the water pipe 62 and supports the electrical component box 8 from below.

[0131] When the support portion 100 or the support member 100 has a gate-like shape, the opening 110 does not have to be formed in an arch shape in the thickness direction. For example, the opening 110 may be formed in a rectangular shape. In this case, the second opening 112 has a straight portion parallel to the second straight portion 122 of the first opening 111 instead of the curved portion 123.

[0132] The support portion 100 or the support member 100 does not have to be configured to fit the water pipe 62 from above, but may be configured to fit the water pipe 62 from the side, for example. In this case, the opening 110 is formed by cutting out the support portion 100 or the support member 100 toward the side.

[0133] The support part (100) or the support member (100) need not have an opening (110) as long as it can be fixed to the water pipe (62). For example, the support part (100) or the support member (100) may have a structure that allows it to be fixed to the water pipe (62) by clamping the water pipe (62) at two points, like a clip.

[0134] The outer circumferential surfaces of the water pipes (61, 62, 63) do not necessarily need to be covered with the heat insulating member (HI).

[0135] Although the embodiments and modifications have been described above, it will be understood that various modifications in form and details are possible without departing from the spirit and scope of the claims. Furthermore, the above embodiments, modifications, and other embodiments may be combined or substituted as appropriate as long as the functionality of the subject matter of the present disclosure is not impaired.

[0136] The terms "first," "second," "third," etc. mentioned above are used to distinguish the terms to which these terms are attached, and do not limit the number or order of the terms. [Industrial Applicability]

[0137] As described above, the present disclosure is useful for heat source units. [Explanation of symbols]

[0138] 1 Heat source unit 8 Pump side electrical equipment box (electrical equipment box) 31,32 Water heat exchanger 33 Pump 40 Casing 41c Right side plate (1st side) 51,52 ports 62 Second water pipe (water pipe) 100 Support member (support part) 110 Aperture 120b 6th plate part (plate part) 131, 132 Elastic member HI insulation material

Claims

1. a water heat exchanger (31, 32) for exchanging heat between a predetermined heat medium and water; a water pipe (62) connected to the water heat exchanger (31, 32); an electrical component box (8) that houses predetermined electrical components; a casing (40) that houses the water pipe (62) and the electrical component box (8); a support (100) that is fixed to the water pipe (62) and supports the electrical component box (8) from below. Heat source unit.

2. The support portion (100) has an opening (110) into which the water pipe (62) is fitted. The heat source unit according to claim 1 .

3. The support portion (100) is formed in a gate shape with the opening (110) opening downward from the support portion (100). The heat source unit according to claim 2 .

4. The support portion (100) has elastic members (131, 132) and is in contact with the water pipe (62) through the elastic members (131, 132). The heat source unit according to claim 2 or 3.

5. The support portion (100) has a plate portion (120b) in which the opening (110) is formed, The thickness direction of the plate portion (120b) coincides with the extending direction of the water pipe (62). The heat source unit according to claim 4.

6. The support portion (100) is configured such that the plate portion (120b) is sandwiched between the plurality of elastic members (131, 132) in the thickness direction. The heat source unit according to claim 5 .

7. The electrical component box (8) is fixed to the casing (40). The heat source unit according to claim 1 or 2.

8. The electrical equipment box (8) is formed in a rectangular parallelepiped shape, The direction in which the long sides of the bottom surface of the electrical component box (8) extend coincides with the direction in which the water pipe (62) extends. The heat source unit according to claim 1 or 2.

9. One longitudinal end of the electrical component box (8) is supported from below by the support part (100), The other longitudinal end of the electrical component box (8) is fixed to the casing (40). The heat source unit according to claim 8.

10. One longitudinal end of the electrical component box (8) is supported from below by the support part (100), The upper surface of the electrical component box (8) is fixed to the casing (40). The heat source unit according to claim 8.

11. a first side surface (41c) of the casing (40) is provided with ports (51, 52) to which the water pipe (62) is connected; The support portion (100) is disposed closer to the water heat exchanger (31, 32) than the first side surface (41c). The heat source unit according to claim 1 or 2.

12. a heat insulating member (HI) covering an outer peripheral surface of the water pipe (62), The support portion (100) is fixed to the water pipe (62) via the heat insulating member (HI). The heat source unit according to claim 1 or 2.

13. a pump (33) provided in the casing (40) for transporting water in the water pipe (62); The electrical component box (8) accommodates electrical components for controlling the pump (33). The heat source unit according to claim 1 or 2.

14. The support portion (100) is a support member that supports the lower portion of the electrical component box (8). The heat source unit according to claim 1 or 2.

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