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 Art

[0002] The air conditioner disclosed in Patent Document 1 includes an outdoor unit that appropriately positions an electrical component box in relation to the arrangement of refrigerant pipes inside a casing and enables the electrical component box to be easily removed from or attached to the casing. Engaging members are provided on the upper surface and side surface of the electrical component box of the outdoor unit, and when these engaging members are engaged with a support frame inside the casing, the electrical component box is fixed inside the casing.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a heat source unit such as the outdoor unit of Patent Document 1, the electrical component box arranged in the casing is fixed in a floating state in the casing, so it cannot be said that such a fixing method is sufficiently stable.

[0005] An object of the present disclosure is to improve the fixity of an electrical component box installed inside the machinery room of a heat source unit.

Means for Solving the Problems

[0006] The first aspect is a water - heat exchanger (31, 32) that exchanges 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), and 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, for example, the fixing property and installation stability of the electrical component box (8) inside the casing (40) are improved compared to fixing the electrical component box (8) by hanging it from above or fixing the side surface of the electrical component box (8).

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

[0009] In the second aspect, the opening (110) of the support portion (100) adheres to the water pipe (62) due to the tightening margin of the opening (110), and the support portion (100) can be tightened and fixed to the water pipe (62).

[0010] The third aspect is in the second aspect, The support portion (100) is formed in a U-shaped configuration in which the opening (110) is open downward of the support portion (100).

[0011] In the third aspect, the support portion (100) is attached so as to fit the water pipe (62) from above. In this way, the fixing property and installation stability of the electrical component box (8) inside the casing supported from below by the support portion (100) are improved.

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

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

[0014] The fifth aspect is, in the fourth aspect, the support part (100) has a plate-shaped plate part (120b) in which the opening (110) is formed, the thickness direction of the plate part (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, in the fifth aspect, the support part (100) is configured such that the plate part (120b) is sandwiched between a plurality of the 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, so that the support part (100) can be stably fixed to the water pipe (62).

[0018] The seventh aspect is, in 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). Thus, since there are a plurality of supports for the electrical component box (8), the electrical component box (8) can be stably fixed in the casing (40).

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

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

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

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

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

[0025] In the tenth aspect, since the lower end and the upper end of the electrical component box (8) are fixed, the electrical component box (8) can be stably fixed in the casing (40).

[0026] In the eleventh aspect, in any one of the first to tenth aspects, Ports (51, 52) to which the water pipe (62) is connected are provided on a first side surface (41c) of the casing (40), The support portion (100) is disposed closer to the heat exchangers (31, 32) than the first side surface (41c).

[0027] In the eleventh aspect, since the heat exchangers (31, 32), the support portion (100), and the electrical component box (8) are arranged in this order, due to this positional relationship, the support portion (100) serves as a barrier and can protect the electrical component box (8) from leaked water blown out from the heat exchangers (31, 32).

[0028] In the twelfth aspect, in any one of the first to eleventh aspects, It further includes a heat insulating member (HI) that covers the outer peripheral surface of the water pipe (62), The support part (100) is fixed to the water pipe (62) via the heat insulation member (HI).

[0029] In the twelfth aspect, the heat insulation member (HI) can suppress the heat of the water pipe (62) from propagating to the electrical component box (8). Thereby, it is possible to suppress the failure of the electrical components inside the electrical component box (8) due to being heated.

[0030] The thirteenth aspect is any one of the first to twelfth aspects, further includes a pump (33) provided in the casing (40) for conveying the water in the water pipe (62), and an electrical component for controlling the pump (33) is arranged in the electrical component box (8).

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

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

[0033] In the fourteenth aspect, the support part (100) can be a separate member from the electrical component box (8).

Brief Description of the Drawings

[0034]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

[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 can be made without departing from the technical idea of the present disclosure. Since each drawing is for conceptually explaining the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for easy understanding.

[0036] (1) Overview The heat source unit (1) according to the present embodiment is used as a heat source of an air conditioner. The air conditioner performs air conditioning in offices, shopping malls, factories, etc. The heat source unit (1) is a cooling-only chiller unit that generates chilled water. The heat source unit (1) is an air-cooled chiller unit.

[0037] (2) Configuration of Refrigerant Circuit 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 it may be one, two, three, or five or more. The basic configurations of the first refrigerant circuit (10A), the second refrigerant circuit (10B), the third refrigerant circuit (10C), and the fourth refrigerant circuit (10D) are the same. In FIG. 1, for the sake of convenience, the detailed illustrations of the third refrigerant circuit (10C) and the fourth refrigerant circuit (10D) are omitted. Each refrigerant circuit (10) is filled with a 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 has a first compressor (11A), a first air heat exchanger (12A), and a first expansion valve (13A). The first refrigerant circuit (10A) has a first subcooling heat exchanger (14A) and a first accumulator (15A).

[0039] The first compressor (11A) compresses the inhaled refrigerant and discharges the compressed refrigerant. The first compressor (11A) is, for example, a scroll compressor, but it may be other types of compressors such as a screw compressor, a turbo compressor, or a 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 type heat exchanger. The first air heat exchanger (12A) of this example functions only as a radiator (condenser) for dissipating heat of 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 dissipation and increases the subcooling degree 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) has, as components constituting the refrigerant piping, 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) and 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) and the inflow 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 subcooling heat exchanger (14A) in the liquid pipe (21). The other end of the injection pipe (22) is connected to the intermediate pressure portion (during compression) of the first compressor (11A). A cooling expansion valve (25) is provided in the upstream portion of the first subcooling heat exchanger (14A) in the injection pipe (22). The gas pipe (23) connects the outflow end of the first refrigerant flow path (R1) of the first water heat exchanger (31) and the first accumulator (15A). The suction pipe (24) connects the first accumulator (15A) and 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 has a second compressor (11B), a second air heat exchanger (12B), and a second expansion valve (13B). The second refrigerant circuit (10B) has 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) and the inflow 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 outflow end of the second refrigerant flow path (R2) of the first water heat exchanger (31) and 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) also 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) and 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) and 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) also 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) and 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) and 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. In the water circuit (30), a pump (33), a first water heat exchanger (31), and a second water heat exchanger (32) are connected in order from the upstream side to the downstream side of the water flow. The pump (33) conveys the water in the water circuit (30). The pump (33) also conveys the water in the water pipe (62) that constitutes 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 counter-flow type 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) Structure of the heat source unit The detailed configuration of the heat source unit (1) will be described with reference to FIGS. 2 to 7. In the following description, the terms related to "front", "rear", "right", "left", "upper", and "lower" are based on the directions indicated by the arrows in FIG. 2. In the following description, the first direction corresponds to the left-right direction which is the horizontal direction, the second direction corresponds to the front-rear direction which is the horizontal direction, and the third direction corresponds to the up-down direction which is the vertical direction.

[0049] (4-1) Casing The heat source unit (1) has a hollow casing (40). The casing (40) is formed in a horizontally long shape where the length in the left-right direction (the first direction) is larger than the length in the front-rear direction (the second direction). As shown in FIG. 5, when viewed from the first direction, the casing (40) has a shape in which the width in the front-rear direction at its upper part is expanded.

[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 above the lower housing portion (41). Inside the lower housing portion (41), a machine room (S1), which is the first chamber, is formed. Inside the upper housing portion (42), a blower room (S2), which is the second chamber, is formed. 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 the first direction (rightward) from the right end of the main body portion (41a). The extension portion (41b) has a right side plate (41c) that constitutes the right side surface of the lower housing portion (41). The right side plate (41c) is an example of the first side surface (41c) of the present disclosure. Ports (51, 52) to which a water pipe (62) described later is connected are provided on the right side plate (41c). The ports (51, 52) have a first port (51) and a second port (52). The first port (51) is arranged closer to the rear in the upper part of the right side plate (41c). The second port (52) is arranged closer to the front 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 detachably attached to the plurality of frames. The plurality of frames is a framework for fixing the outer plate of the casing (40). The plurality of frames constitutes columns or beams. The plurality of frames has the function of a reinforcing member for reinforcing the casing (40). The outer plate shields the inside and outside of the casing (40). The frames and the outer plates are made of a metal material such as iron or aluminum.

[0052] As shown in FIGS. 2 to 4, the lower housing portion (41) has, as a frame, a first horizontal frame (Fa1), a second horizontal frame (Fa2), a third horizontal frame (Fa3), and a fourth horizontal frame (Fa4). These horizontal frames are formed in a long plate shape extending in the first direction. In other words, these horizontal frames have the first direction as their longitudinal direction. 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, as a frame, a plurality of first vertical frames (Fb1) and a plurality of second vertical frames (Fb2). These vertical frames are formed in a long plate shape extending in the third direction, which is the vertical direction. In other words, these vertical frames have the third direction as their longitudinal direction. The first vertical frame (Fb1) is located on the front surface of the casing (40) and is formed 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 is formed from the first horizontal frame (Fa1) to the second horizontal frame (Fa2).

[0054] The lower housing portion (41) has, as an outer plate, a plurality of lower front plates (P1) and a plurality of lower rear plates (P2). 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 part (42) has, as a frame, a fifth horizontal frame (Fa5), a sixth horizontal frame (Fa6), a seventh horizontal frame (Fa7), and an eighth horizontal frame (Fa8). These horizontal frames are formed in a long plate shape extending in the first direction. In other words, these horizontal frames have the first direction as their longitudinal direction. The fifth horizontal frame (Fa5) is located at the lower end of the front surface of the upper housing part (42). The sixth horizontal frame (Fa6) is located near the upper end of the front surface of the upper housing part (42). The seventh horizontal frame (Fa7) is located at the lower end of the rear surface of the upper housing part (42). The eighth horizontal frame (Fa8) is located near the upper end of the rear surface of the upper housing part (42).

[0056] The upper housing part (42) has, as a frame, 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 part (42), and the second intermediate vertical frame (Fc2) is located at the right end of the front surface of the upper housing part (42). The third intermediate vertical frame (Fc3) and the fourth intermediate vertical frame (FC4) are located in the middle in the left - right direction of the front surface of the upper housing part (42). The third intermediate vertical frame (Fc3) is closer to the left end of the upper housing part (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 as to approach the front side as they go 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 as to face obliquely downward.

[0058] The fifth intermediate vertical frame (Fc5) is located at the left end of the rear surface of the upper housing part (42), and the sixth intermediate vertical frame (Fc6) is located at the right end of the rear surface of the upper housing part (42). The seventh intermediate vertical frame (Fc7) and the eighth intermediate vertical frame (Fc8) are located at the middle part in the left-right direction of the rear surface of the upper housing part (42). The seventh intermediate vertical frame (Fc7) is closer to the left end of the upper housing part (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 as to approach the rear side as they go 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 as to face obliquely downward.

[0059] In the upper housing part (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 part (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 connecting portion between the lower housing portion (41) and the upper housing portion (42). These reinforcing frames extend along the left - right direction (the first direction). In other words, these reinforcing frames have the first direction as the 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 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 constitutes its upper surface. 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 the first direction. In the top plate (43) of this example, a first air outlet (O1), a second air outlet (O2), a third air outlet (O3), and a fourth air outlet (O4) are formed in order from its left end to its right end.

[0062] As shown in FIG. 6, the casing (40) has a bottom plate (44) that constitutes its lower surface. The bottom plate (44) is formed in a rectangular plate shape. The bottom plate (44) constitutes the bottom surface of the machine room (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 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).

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

[0065] (4-2) Configuration of Each Device in Blower Chamber As shown in FIGS. 2 to 4, air heat exchangers (12A, 12B, 12C, 12D) are arranged in the blower chamber (S2). Specifically, the first air heat exchanger (12A) and the third air heat exchanger (12C) are arranged in the first blower chamber (S2A), and the second air heat exchanger (12B) and the fourth air heat exchanger (12D) are arranged in the second blower chamber (S2B). The first air heat exchanger (12A) is arranged on the back side of the first suction port (I1), the second air heat exchanger (12B) is arranged on the back side of the second suction port (I2), the third air heat exchanger (12C) is arranged on the back side of the third suction port (I3), and the fourth air heat exchanger (12D) is arranged on the back side of the fourth suction port (I4). The heat transfer tubes of the air heat exchangers (12A, 12B, 12C, 12D) extend along 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 short side 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 composed of propeller fans.

[0067] (4-3) Configuration of Each Device in the Machine Room As shown in FIG. 7, in the machine room (S1), a first unit (U1), a second unit (U2), a third unit (U3), and a fourth unit (U4) are arranged in order from the left side to the right side. Further, a water-heat exchanger unit (U5) is arranged on the right side of the fourth unit (U4) in the machine room (S1). The water-heat exchanger unit (U5) will be described later.

[0068] The first unit (U1) includes each component device of the first refrigerant circuit (10A) and a first system electrical component box (6A) for controlling each component device. Each component device of the first refrigerant circuit (10A) includes 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 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 system 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 system electrical component 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 at the middle part in the second direction of the casing (40). 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 system electrical component box houses an inverter device or the like for adjusting the rotation speed of the corresponding compressor (11A, 11B, 11C, 11D). These system electrical component boxes are arranged side by side in the first direction. These system electrical component boxes are arranged closer to the rear side of the casing (40).

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

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

[0072] (5) Operating operation The cooling operation of the heat source unit (1) will be described. Hereinafter, an example in which all the refrigerant circuits (10) operate will be described. In the cooling operation, the compressors (11A, 11B, 11C, 11D) and the pump (33) are in an operating state. In the first refrigerant circuit (10A), the refrigerant compressed by the first compressor (11A) condenses in the first air heat exchanger (12A). A part of the condensed refrigerant flows through the first liquid flow path (L1) of the first subcooling heat exchanger (14A). The remaining part of this refrigerant is depressurized 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 sucked into the intermediate pressure part 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) is sucked into the first compressor (11A) after passing through the first accumulator (15A).

[0073] In the second refrigerant circuit (10B), the third refrigerant circuit (10C), and the fourth refrigerant circuit (10D), the same refrigeration cycle is performed.

[0074] In the water circuit (30), the water conveyed 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 as described above is used as a 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). Hereinafter, the water pipes (61, 62, 63), the pump-side electrical component box (8), and the support member (100) will be described in detail.

[0076] (6-1) Water pipes 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 the casing (40). The first water pipe (61), the second water pipe (62), and the relay water pipe (63) constitute the water circuit (30) (see FIG. 1). The heat source unit (1) includes a heat insulating member (HI) that covers the outer peripheral surfaces of the respective water pipes (61, 62, 63). The heat insulating member (HI) is not particularly limited as long as it is a material having an effect of heat insulating between each water pipe (61, 62, 63) and the outside thereof. For example, polyurethane or the like is used.

[0077] The first water pipe (61) is a water pipe through which water flowing from the water circuit (30) into the water heat exchangers (31, 32) flows. A pump (33) is connected to the first water pipe (61). The first water pipe (61) is arranged towards the rear inside the casing (40). The first water pipe (61) is provided from the first water heat exchanger (31) across to the right side plate (41c). Specifically, one end of the first water pipe (61) is connected to the upper part 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) of the present disclosure. The second water heat exchanger (32) is an example of the water heat exchangers (31, 32) of the present disclosure. The second water pipe (62) is arranged towards the front inside the casing (40). The second water pipe (62) extends substantially horizontally (in the first direction) from the second water heat exchanger (32) across 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), which will be described later and supports 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 that connects 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) via the relay water pipe (63) and is heat-exchanged again 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 component box As shown in FIG. 9, the pump-side electrical component box (8) is arranged 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 rectangle, and the direction in which the long side of the bottom surface extends coincides with the extending direction of the second water pipe (62). In this way, the pump-side electrical component box (8) is arranged such that its longitudinal direction coincides with the extending direction of the second water pipe (62).

[0081] As shown in FIGS. 9 and 10, a long plate-shaped first mounting portion (34) 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 the upper part of the pump-side electrical component box (8) to the casing (40). The first mounting portion (34) is arranged 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 such that the cross-sectional shape perpendicular to its longitudinal direction 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 approximately the central height position to the upper end of the left side surface of the electrical component box (8). Two mounting holes arranged in the vertical direction are formed in the first plate portion (34a) of the first mounting portion (34). These mounting holes are holes through which a fastening member (B) for fastening the first mounting portion (34) and a left fixing member (71) fixed to the second horizontal frame (Fa2) is inserted. The fastening member (B) is, for example, a screw or a bolt.

[0083] As shown in FIGS. 9 and 11, a long plate-shaped second mounting portion (35) 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 disposed 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 such that the cross-sectional shape perpendicular to its longitudinal direction 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). A plurality of mounting holes arranged in the vertical direction are formed in the third plate portion (35a) and the fourth plate portion (35b) of the first mounting portion (34). The mounting holes formed in the third plate portion (35a) are holes through which a fastening member (B) for fastening the second mounting portion (35) and a right fixing member (72) fixed to the second horizontal frame (Fa2) is inserted. The mounting holes formed in the fourth plate portion (35b) are holes through which a fastening member (B) for fastening the second mounting portion (35) and a connecting member (59) described later is inserted.

[0085] As shown in FIGS. 9 and 12, the pump-side electrical component box (8) is provided with a third attachment portion (36) that is fixed to a support member (100) described later. The third attachment 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 attachment portion (36) is formed integrally with the left side surface of the pump-side electrical component box (8). A plurality of attachment holes arranged in the front-rear direction are formed in the third attachment portion (36). These attachment holes are holes through which a fastening member for fastening the third attachment portion (36) and the support member (100) is inserted.

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

[0087] (6-3) Support member As shown in FIGS. 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 the present 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 such that a plurality of plate-like members are laminated. The support member (100) has an opening (110) formed so that the second water pipe (62) fits therein. In the present embodiment, the second water pipe (62) in a state where the heat insulating member (HI) is wound 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 later. The opening (110) is open downward with respect to the support member (100). In this way, the support member (100) is formed in a portal shape when viewed from the lamination direction. Hereinafter, the support member (100) will be specifically described.

[0090] The support member (100) includes a metal plate member (120) and plate-shaped elastic members (131, 132). The plate member (120) is formed such that its longitudinal cross-section is L-shaped. Specifically, the plate member (120) has a fifth plate portion (120a) fixed to the third attachment 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 substantially horizontally such that its plate surface contacts the plate surface of the third attachment portion (36). Two attachment holes arranged in the front-rear direction are formed in the fifth plate portion (120a). These attachment holes are holes through which a fastening member for fastening the fifth plate portion (120a) and the third attachment portion (36) is 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 so as to be cut out downward from the upper part of the sixth plate portion (120b). Specifically, the first opening (111) is formed by a pair of first straight portions (121) extending in the vertical direction and parallel to each other, and a second straight portion (122) connecting the upper ends of the first straight portions (121).

[0093] The length of the opening width of the first opening (111) in the front-rear direction coincides with the distance D1 between the pair of first straight portions (121). The length D1 of the opening width of the first opening (111) in the front-rear direction is the same as or larger than the outer diameter R1 of the second water pipe (62). Here, the outer diameter R1 of the second water pipe (62) refers to the length including the thickness of the heat insulating member (HI) covering the outer peripheral surface of the second water pipe (62). Unless otherwise specified hereinafter, the "outer diameter R1 of the second water pipe (62)" shall be the length obtained by adding the thickness of the heat insulating member (HI) to the outer diameter of the second water pipe (62). The length of the first opening (111) in the vertical direction is the same as or longer than the outer diameter R1 of the second water pipe (62).

[0094] The elastic members (131, 132) are formed in a relatively thick plate shape. The elastic members (131, 132) are thicker than the sixth plate portion (120b). The elastic members (131, 132) are, 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 adhered to the left side surface of the sixth plate portion (120b). The second elastic member (132) is adhered to the right side surface of the sixth plate portion (120b). Thus, the support member (100) is configured such that the sixth plate portion (120b) is sandwiched between two elastic members (131, 132) in its plate thickness direction.

[0095] An inverted U-shaped second opening (112) is formed in each of the elastic members (131, 132) (see FIG. 13). The second opening (112) constitutes the opening (110). When viewed from the lamination direction of the sixth plate portion (120b) and the elastic members (131, 132), the second opening (112) is formed so as to overlap the first opening (111). The second opening (112) is formed so as to notch downward from the upper part of each elastic member (131, 132). The second opening (112) has a semi-circular curved portion (123), a pair of third straight 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 the respective third straight portions (124).

[0096] The second opening (112) of the present 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 is equal to the distance between a 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) in a state where the heat insulating member (HI) is not wound. 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) Mounting of the pump-side electrical component 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 upper part and side part of the pump-side electrical component box (8) are fixed to the casing (40). In the present embodiment, the left end, which is one end side in the longitudinal direction of the pump-side electrical component box (8), is supported from below by a support member (100). The side surface of the right end side, which is the other end side in the longitudinal direction of the pump-side electrical component box (8), is fixed to the casing (40). In addition, the upper parts of the left end and the right end of the pump-side electrical component box (8) are fixed to the casing (40).

[0098] (7-1) Fixing of the upper part of the pump-side electrical component box As shown in FIGS. 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) that extend 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 fixing member (71) fixes the first mounting portion (34). The left fixing member (71) is formed such that the cross-sectional shape orthogonal to its longitudinal direction is L-shaped. Specifically, the left fixing member (71) has a seventh plate portion (71a) and an eighth plate portion (71b) that extend in the vertical direction. Mounting holes for fastening the first plate portion (34a) of the first mounting portion (34) are formed in the eighth plate portion (71b). By inserting a fastening member into this mounting hole, the first mounting portion (34) is fixed to the left fixing member (71).

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

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

[0102] (7-2) Fixing of the side surface of the pump-side electrical component box As shown in FIGS. 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 attachment portion (35) and the first vertical frame (Fb1). The second attachment portion (35) is arranged adjacent to the first vertical frame (Fb1). By connecting the connecting member to the second attachment portion (35) and the first vertical frame (Fb1), the second attachment portion (35) is fixed to the first vertical frame (Fb1).

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

[0104] (7-3) Support of the lower surface of the pump-side electrical component box As shown in FIGS. 9, 12, and 13, the support member (100) is attached to the second water pipe (62) such that the opening (110) sandwiches the second water pipe (62) from above. At this time, the thickness direction of the sixth plate portion (120b) coincides with the extending direction of the second water pipe (62).

[0105] Here, 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) in a state where the heat insulating member (HI) is not wound. Also, the opening width D1 of the first opening (111) is larger than the outer diameter R1 of the second water pipe (62). Thereby, when the support member (100) is fitted into the second water pipe (62) and the second opening (112) of the elastic members (131, 132) contacts the outer peripheral surface of the second water pipe (62), the outer peripheral surface of the second water pipe (62) is pressed by the elastic members (131, 132), and the second opening (112) adheres to the heat insulating member (HI) covering the second water pipe (62). Thus, the support member (100) contacts 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 attachment portion (36) of the pump-side electrical component box (8) by a fastening member (B). Since the third attachment 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 the present 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 component box (8) that houses electrical components for the pump, a casing (40) that houses the second water pipe (62) and the pump-side electrical component box (8), and a support member (100) that is fixed to the second water pipe (62) and supports the pump-side electrical component box (8) from below.

[0108] By supporting the pump-side electrical component box (8) from below, the fixity and installation stability of the pump-side electrical component box (8) within the casing (40) are improved compared to, for example, fixing the pump-side electrical component box (8) by suspending it from above or fixing the side surface of the pump-side electrical component box (8).

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

[0110] (8-3) Feature 3 The opening (110) of the support member (100) of the present embodiment is formed in a U-shape that opens downward. Thereby, since the support member (100) is fixed to fit the second water pipe (62) from above, the pump-side electrical component box (8) can be stably supported from below, and thus the fixity of the pump-side electrical component box (8) can be improved. In addition, when attaching the support member (100) to the second water pipe (62), fastening work using screws, bolts, etc. can be made unnecessary, and the attachment man-hour can be reduced.

[0111] (8-4) Feature 4 The support member (100) of the present embodiment has elastic members (131, 132). A second opening (112) that constitutes the opening (110) is formed in the elastic members (131, 132), and the support member (100) contacts 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 way, pressure from the elastic members (131, 132) acts on the second water pipe (62) fitted in the opening (110), so that the elastic members (131, 132) are in close contact with the second water pipe (62), and the fixity of the support member (100) to the second water pipe (62) is improved.

[0112] (8 - 5) Feature 5 The support member (100) of the present embodiment has a sixth plate portion (120b) (plate portion (120b)) in which an opening (110) is formed. The thickness direction of the sixth plate portion (120b) coincides with the extending direction of the second water pipe (62). That is, the support member (100) is attached to the second water pipe (62) such that the plate surface of the sixth plate portion (120b) is orthogonal to the direction in which the second water pipe (62) extends. In this way, the attachment of the support member (100) to the second water pipe (62) can be facilitated.

[0113] (8 - 6) Feature 6 The support member (100) of the present embodiment is configured such that the sixth plate portion (120b) is sandwiched between two elastic members (131, 132) in the thickness direction. In the embodiment, since the sixth plate portion (120b) is a relatively thin plate, two relatively thick elastic members (131, 132) are arranged on both sides in the thickness direction of the sixth plate portion (120b), so that the overall plate thickness of the support member (100) increases. Thereby, the support member (100) is stably fixed on the second water pipe (62).

[0114] (8 - 7) Feature 7 The pump - side electrical component box (8) of the present embodiment is fixed to the casing (40). In this way, 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 the present embodiment is formed in a rectangular parallelepiped shape. The direction in which the long side of the bottom surface of the pump - side electrical component box (8) extends coincides with the extending direction of the second water pipe (62). In this way, the space above the second water pipe (62) can be utilized more effectively than when the direction in which the short side of the bottom surface of the pump - side electrical component box (8) extends is made to coincide with the extending direction of the second water pipe (62).

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

[0117] (8-10) Feature 10 One end side in the longitudinal direction of the pump-side electrical component box (8) of the present embodiment 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). In this way, since the lower part and the upper part of the pump-side electrical component box (8) are fixed, the pump-side electrical component box (8) can be stably fixed in the casing (40).

[0118] (8-11) Feature 11 Ports (51, 52) to which the second water pipe (62) is connected are provided on the first side surface (41c) of the casing (40) of the present embodiment, and the support member (100) is arranged 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 the support member (100) is arranged between the water heat exchangers (31, 32) and the pump-side electrical component box (8). Thereby, for example, even if water spouts from the second water heat exchanger (32) when the second water pipe (62) is removed from the second water heat exchanger (32), the support member (100) serves as a barrier to suppress the pump-side electrical component box (8) from getting wet. In particular, a plurality of holes for ventilation are formed on the lower surface of the pump-side electrical component box (8) of the present embodiment, and a sixth plate portion (120b) extending downward from the left end of the lower surface of the pump-side electrical component box (8) serves as a barrier to suppress the lower surface of the pump-side electrical component box (8) from getting wet, and suppress water from entering the pump-side electrical component box (8) through the holes on the lower surface.

[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 suppress the heat of the second water pipe (62) from propagating to the pump-side electrical component box (8). Thereby, the electrical components in the pump-side electrical component box (8) can be protected.

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

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

[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 have 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 cooling-only chiller unit that generates cold water. However, the heat source unit (1) may be a so-called heat pump type chiller unit that generates both cold water and hot water. The heat source unit (1) may be a hot water supply heat source unit that generates hot water.

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

[0125] The heat source unit (1) may be configured such that the water heat exchanger unit (U5) and other component members are separate. In this case, the casing of the present disclosure houses only the water heat exchanger unit (U5).

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

[0127] The electrical component box disposed in the heat exchanger unit (U5) is not limited to the pump-side electrical component box (8). It may be an electrical component box that houses electrical components other than the electrical components that operate the pump (33).

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

[0129] The support portion (100) or the support member (100) may have only one elastic member (131, 132), may have three or more elastic members, or may not have any elastic members.

[0130] The shape of the support portion (100) or the support member (100) does not have to be a portal shape. The support portion (100) or the support member (100) is fixed to the water pipe (62) and supports the electrical component box (8) from below, and there is no limitation on its shape.

[0131] When the shape of the support portion (100) or the support member (100) is a portal shape, the opening (110) does not have to be formed in an arch shape in the plate thickness direction. For example, the opening (110) may be formed in a rectangle. 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 part (100) or the support member (100) does not have to be configured to fit the water pipe (62) from above, and for example, it may be configured to fit from the side. In this case, the opening (110) is formed so as to be notched laterally in the support part (100) or the support member (100).

[0133] The support part (100) or the support member (100) only needs to be fixable to the water pipe (62) and does not have to have the opening (110). For example, the support part (100) or the support member (100) may have a structure in which the water pipe (62) is fixed by sandwiching the water pipe (62) at two points like a clip.

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

[0135] Although the embodiments and the modified examples have been described above, it will be understood that various changes in form and details are possible without departing from the spirit and scope of the claims. Also, the above embodiments, modified examples, and other embodiments may be combined or replaced as appropriate as long as the functions of the object of the present disclosure are not impaired.

[0136] The descriptions such as "first", "second", "third",... described above are used to distinguish the phrases to which these descriptions are given, and do not limit even the number and order of those phrases.

Industrial Applicability

[0137] As described above, the present disclosure is useful for the heat source unit.

Explanation of Signs

[0138] 1 Heat source unit 8 Pump side electrical component box (electrical component box) 31, 32 Water heat exchanger 33 Pump 40 Casing 41c Right side plate (first side surface) 51, 52 ports 62 Second water pipe (water pipe) 100 Support member (support part) 110 Opening 120b Sixth plate part (plate part) 131, 132 Elastic members HI Heat insulation member

Claims

1. A water heat exchanger (31, 32) that exchanges 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), And a support portion (100) that is fixed to the water pipe (62) and supports the electrical component box (8) from below. A heat source unit.

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

3. The support portion (100) is formed in a U-shaped configuration in which the opening (110) is open downward toward the lower part of the support portion (100). The heat source unit according to claim 2.

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

5. 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). The heat source unit according to claim 4.

6. The support portion (100) is configured such that the plate portion (120b) is sandwiched between a plurality of the 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 component box (8) is formed in a rectangular parallelepiped shape. The direction in which the long side of the bottom surface of the electrical component box (8) extends coincides with the extending direction of the water pipe (62). The heat source unit according to claim 1 or 2.

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

10. One end side in the longitudinal direction of the electrical component box (8) is supported from below by the support portion (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. On the first side surface (41c) of the casing (40), ports (51, 52) to which the water pipe (62) is connected are provided. The support part (100) is arranged closer to the heat exchangers (31, 32) than the first side surface (41c). The heat source unit according to claim 1 or 2.

12. Further comprising a heat insulating member (HI) covering the 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). The heat source unit according to claim 1 or 2.

13. Further comprising a pump (33) provided in the casing (40) for conveying water in the water pipe (62), In the electrical component box (8), electrical components for controlling the pump (33) are arranged. The heat source unit according to claim 1 or 2.

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

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