Heat source unit and refrigeration cycle device

Abstract

To restrain a force applied to a fluid pipe from propagating to a water heat exchanger.SOLUTION: An opening part (70a) is formed in a casing (70). A compressor (30) and a water heat exchanger (15) are arranged in an internal space (S1) of the casing (70). A fluid pipe (17) is inserted into the opening part (70a) of the casing (70), and connected to the water heat exchanger (15). A supporting part (18) is arranged in the internal space (S1) of the casing (70), and supports the fluid pipe (17).SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a heat source unit and a refrigeration cycle apparatus.

Background Art

[0002] Patent Document 1 discloses a heat source unit (outdoor unit) in which a compressor soundproof box housing a compressor is disposed in a machine room. In the heat source unit of Patent Document 1, a sound-absorbing material is attached to the inner surface of the soundproof box sheet metal that forms the side and upper surfaces of the compressor soundproof box.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] It is conceivable to dispose a water heat exchanger in a heat source unit such as that of Patent Document 1. However, simply connecting a fluid pipe to the water heat exchanger disposed in the heat source unit may cause the force (stress) applied to the fluid pipe to propagate to the water heat exchanger, and the water heat exchanger may be damaged by that force.

[0005] An object of the present disclosure is to suppress the propagation of the force applied to the fluid pipe to the water heat exchanger.

Means for Solving the Problems

[0006] A first aspect of the present disclosure relates to a heat source unit, the heat source unit including a casing (70) in which an opening (70a) is formed, a compressor (30) and a water heat exchanger (15) disposed in an internal space (S1) of the casing (70), a fluid pipe (17) inserted through the opening (70a) of the casing (70) and connected to the water heat exchanger (15), and a support portion (18) disposed in the internal space (S1) of the casing (70) and supporting the fluid pipe (17).

[0007] In the first aspect, the support portion (18) that supports the fluid pipe (17) can inhibit the propagation of a force (stress) applied to the fluid pipe (17). Thereby, it is possible to suppress the force applied to the fluid pipe (17) from propagating to the water heat exchanger (15).

[0008] A second aspect of the present disclosure is the heat source unit according to the first aspect, further including a mounting member (81) on which the water heat exchanger (15) is mounted and a vibration isolation member (82) that supports the mounting member (81), and the support portion (18) is a heat source unit fixed to the mounting member (81).

[0009] In the second aspect, by supporting the mounting member (81) on which the water heat exchanger (15) and the support portion (18) are disposed with the vibration isolation member (82), the vibration of the water heat exchanger (15) and the support portion (18) can be suppressed. Further, since the water heat exchanger (15) and the support portion (18) can be arranged in the same vibration system, the force applied to the water heat exchanger (15) due to the difference in vibration between the water heat exchanger (15) and the support portion (18) can be reduced.

[0010] A third aspect of the present disclosure is the heat source unit according to the first or second aspect, wherein the support portion (18) is a heat source unit that supports the fluid pipe (17) such that the fluid pipe (17) is inserted through the opening (70a) of the casing (70) with a predetermined gap from the opening (70a) of the casing (70).

[0011] In the third aspect, since contact between the fluid pipe (17) and the opening (70a) of the casing (70) can be suppressed, generation of contact noise can be suppressed.

[0012] A fourth aspect of the present disclosure is a heat source unit according to the third aspect, which is provided with a sound insulation member (60) disposed in the internal space (S1) of the casing (70) and surrounding the compressor (30) and the hydrothermal exchanger (15). An opening (60a) through which the fluid pipe is inserted is formed in the sound insulation member (60). The support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) is inserted into the opening (70a) of the casing (70) and the opening (60a) of the sound insulation member (60) with a predetermined gap therebetween.

[0013] In the fourth aspect, due to the double sound insulation structure of the sound insulation member (60) and the casing (70), it is possible to suppress leakage of radiated sound and vibration sound from the compressor (30) and the hydrothermal exchanger (15) to the outside. Further, since contact between the "fluid pipe (17)" and the "opening (70a) of the casing (70) and the opening (60a) of the sound insulation member (60)" can be suppressed, generation of contact noise can be suppressed.

[0014] A fifth aspect of the present disclosure is a heat source unit according to the fourth aspect, which is provided with a heat insulation member (63) having elasticity and wound around the fluid pipe (17). The support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) wound with the heat insulation member (63) is inserted into the opening (70a) of the casing (70) and the opening (60a) of the sound insulation member (60) with a predetermined gap therebetween.

[0015] In the fifth aspect, by winding the heat insulating member (63) having elasticity around the fluid pipe (17), even if the fluid pipe (17) around which the heat insulating member (63) is wound comes into contact with "the opening (70a) of the casing (70) and the opening (60a) of the sound insulating member (60)", the contact sound can be suppressed by the elasticity of the heat insulating member (63).

[0016] A sixth aspect of the present disclosure is a heat source unit including a first sound absorbing member (61) provided between the outer surface of the sound insulating member (60) and the inner surface of the casing (70) in the heat source unit of the fourth or fifth aspect.

[0017] In the sixth aspect, the first sound absorbing member (61) can suppress a decrease in sound insulation performance due to the low-frequency resonance transmission phenomenon and enhance the soundproofing effect.

[0018] A seventh aspect of the present disclosure is a heat source unit including a second sound absorbing member (62) provided on the inner surface of the sound insulating member (60) in the heat source unit of the sixth aspect. By the second sound absorbing member (62) absorbing the radiated sound and vibration sound from the compressor (30) and the water heat exchanger (15), the soundproofing effect can be enhanced.

[0019] An eighth aspect of the present disclosure is a refrigeration cycle device including any one of the heat source units of the first to seventh aspects.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and their descriptions will not be repeated. Also, the present disclosure is not limited to the embodiments shown below, and various modifications are possible 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.

[0022] (Refrigeration cycle device) As shown in FIG. 1, the refrigeration cycle device (1) is a hot water supply refrigeration cycle device having an outdoor unit (20) as a heat source unit. The outdoor unit (20) has a refrigerant circuit (2).

[0023] 〔Refrigerant circuit〕 The refrigerant circuit (2) is filled with, for example, a flammable natural refrigerant. The flammable natural refrigerant is, for example, propane. Propane is a refrigerant having a specific gravity greater than that of air. The refrigerant circuit (2) performs a refrigeration cycle by circulating the refrigerant.

[0024] 〔Fluid circuit〕 The refrigeration cycle device (1) has a fluid circuit (12). Water as a heat medium flows through the fluid circuit (12). A water heat exchanger (15) and a fluid pump (16) are connected to the fluid circuit (12). The fluid pump (16) circulates the water in the fluid circuit (12). The fluid heated by the water heat exchanger (15) is supplied to a hot water supply tank (not shown) which is the supply target. The water in the hot water supply tank returns to the fluid circuit (12) and is heated again by the water heat exchanger (15).

[0025] 〔Outdoor Unit〕 The outdoor unit (20) includes a refrigerant cylinder (5), a water heat exchanger (15), an outdoor heat exchanger (21), an outdoor fan (22), an outdoor expansion valve (23), a four-way switching valve (24), an accumulator (25), and a compressor (30). The outdoor heat exchanger (21), the outdoor expansion valve (23), the four-way switching valve (24), and the compressor (30) are connected by piping (26).

[0026] The refrigerant cylinder (5) is filled with refrigerant. The refrigerant cylinder (5) is connected to a pipe that branches from, for example, the pipe (26) connecting the four-way switching valve (24) and the accumulator (25). After transporting the outdoor unit (20) to the installation site, the refrigerant cylinder (5) is filled with refrigerant into the refrigerant circuit (2) by opening the on-off valve (6) of the refrigerant cylinder (5). In this way, it is possible to suppress the leakage of flammable refrigerant from the refrigerant circuit (2) during the transportation of the outdoor unit (20).

[0027] The water heat exchanger (15) has the pipe (26) of the refrigerant circuit (2) and the fluid pipe (17) of the fluid circuit (12) connected thereto. The water heat exchanger (15) exchanges heat between "the refrigerant flowing through the pipe (26)" and "the water (fluid) flowing through the fluid pipe (17) of the fluid circuit (12)". For example, the water heat exchanger (15) is composed of a plate heat exchanger. The water heat exchanger (15) has a refrigerant flow path to which the pipe (26) of the refrigerant circuit (2) is connected and a water flow path (fluid flow path) to which the fluid pipe (17) of the fluid circuit (12) is connected, and exchanges heat between the refrigerant flowing through the refrigerant flow path and the water flowing through the water flow path. The refrigerant flow path and the water flow path are formed in a plurality of plate members within the water heat exchanger (15).

[0028] The outdoor heat exchanger (21) is composed of, for example, a cross-fin type fin-and-tube heat exchanger. The outdoor heat exchanger (21) exchanges heat between the refrigerant flowing through the outdoor heat exchanger (21) and the air blown by the outdoor fan (22). The outdoor expansion valve (23) is composed of, for example, an electronic expansion valve. The outdoor heat exchanger (21) is an example of a heat exchanger on the heat source side.

[0029] The four-way switching valve (24) has a first port (P1), a second port (P2), a third port (P3), and a fourth port (P4). The four-way switching valve (24) can be switched between a state in which the first port (P1) and the third port (P3) are in communication and the second port (P2) and the fourth port (P4) are in communication (the state shown by the solid line in FIG. 1) and a state in which the first port (P1) and the second port (P2) are in communication and the third port (P3) and the fourth port (P4) are in communication (the state shown by the broken line in FIG. 1).

[0030] The compressor (30) compresses the refrigerant. The compressor (30) is constituted by a rotary compressor such as a scroll compressor, for example. The four-way switching valve (24) is connected to the discharge-side pipe (26) of the compressor (30). An accumulator (25) is connected to the suction-side pipe (26) of the compressor (30).

[0031] 〔Internal Structure of Outdoor Unit〕 Hereinafter, for convenience of explanation, the directions of up and down, front and back, left and right are indicated by arrows in each figure. Unless otherwise specified, the directions such as up and down will be described according to the directions indicated by these arrows.

[0032] As shown in FIGS. 2 and 3, the outdoor unit (20) has a casing (70). The casing (70) is formed in a box shape. The casing (70) is constituted by, for example, a metal plate material. The casing (70) has an upper panel (71), a bottom plate (72), a front panel (73), a rear panel (74), a left panel (75), and a right panel (76).

[0033] An internal partition member (28) is erected and arranged inside the casing (70). The partition member (28) is constituted by, for example, a metal plate material. The partition member (28) partitions the inside of the casing (70) into a machine room (S1) as an internal space and a blower room (S2).

[0034] The blower compartment (S2) is the space on the left side in Figure 2 of the casing (70) relative to the partition member (28). An outdoor fan (22) and an outdoor heat exchanger (21) are arranged in the blower compartment (S2). The outdoor fan (22) has a fan motor (22a).

[0035] The casing (70) is formed with a suction port (701) and a blowout port (702). The suction port (701) is formed in the rear panel (74) and the left panel (75). The blowout port (702) is formed in the front panel (73). When the outdoor fan (22) is rotated by the fan motor (22a), the air sucked into the blower compartment (S2) from the suction port (701) exchanges heat with the refrigerant flowing through the outdoor heat exchanger (21). The air after heat exchange is blown out from the blowout port (702) to the outside of the outdoor unit (20). In Figure 3, the air flow is indicated by a white arrow line.

[0036] The machine compartment (S1) is the space on the right side in Figure 2 of the casing (70) relative to the partition member (28). A refrigerant cylinder (5), a pipe group (8), a water heat exchanger (15), an accumulator (25), a compressor (30), and a sound insulation member (60) are arranged in the machine compartment (S1).

[0037] The compressor (30) has support legs (31). The support legs (31) are supported by a plurality of first vibration isolation members (41). The first vibration isolation members (41) are supported by a first support member (51). The first support member (51) is supported by a plurality of second vibration isolation members (42). The second vibration isolation members (42) are supported by a second support member (52). In the example shown in Figure 2, the second support member (52) is the bottom plate (72) of the casing (70).

[0038] The first vibration isolation members (41) and the second vibration isolation members (42) are made of rubber or urethane. The material and spring constant of the first vibration isolation members (41) and the material and spring constant of the second vibration isolation members (42) may be the same as each other or different.

[0039] The compressor (30) is disposed on a double vibration isolation structure via a first vibration isolation member (41), a first support member (51), and a second vibration isolation member (42). Therefore, even if the compressor (30) vibrates during the operation of the refrigeration cycle apparatus (1), the transmission of the vibration and the generation of noise are suppressed. For example, the vibration of the compressor (30) is attenuated by the first vibration isolation member (41) and the second vibration isolation member (42) before being transmitted to the bottom plate (72).

[0040] The refrigerant cylinder (5) and the water heat exchanger (15) are supported by the first support member (51). The accumulator (25) is supported by a stay (not shown) at a position away from the first support member (51).

[0041] The sound insulation member (60) is formed in a box shape with an open bottom. The sound insulation member (60) is supported by the bottom plate (72) of the casing (70). The sound insulation member (60) is composed of a non-ventilative member. The sound insulation member (60) is composed of, for example, a metal plate material or a rubber sheet.

[0042] The sound insulation member (60) partitions (forms) an accommodation space (65) that accommodates the compressor (30) and the water heat exchanger (15). The sound insulation member (60) covers the compressor (30) and the water heat exchanger (15). In addition to the compressor (30) and the water heat exchanger (15), the refrigerant cylinder (5), the pipe group (8), and the accumulator (25) are accommodated in the accommodation space (65) of the sound insulation member (60). The sound insulation member (60) surrounds the compressor (30), the water heat exchanger (15), the refrigerant cylinder (5), the pipe group (8), and the accumulator (25).

[0043] The pipe group (8) includes a valve body (9) and a pipe (26). The valve body (9) includes an outdoor expansion valve (23), a four-way switching valve (24), and a solenoid valve (29). The pipe group (8) may include an internal heat exchanger that exchanges heat between refrigerants, a muffler, a filter, etc. The valve body (9) may include an electric valve, a check valve, a three-way valve, etc.

[0044] A gap is provided between the outer surface of the sound insulation member (60) and the inner surface of the casing (70). The sound insulation member (60) and the casing (70) are arranged at a predetermined interval. Note that the inner surface of the casing (70) includes the surface on the machine room (S1) side of the partition member (28).

[0045] A first sound absorption member (61) is provided in the gap between the outer surface of the sound insulation member (60) and the inner surface of the casing (70). The first sound absorption member (61) is made of, for example, urethane. The first sound absorption member (61) is arranged on the outer surface side of the upper side wall, front side wall, rear side wall, left side wall, and right side wall of the sound insulation member (60), respectively.

[0046] Also, a second sound absorption member (62) is provided on the inner surface of the sound insulation member (60). The second sound absorption member (62) is made of, for example, urethane. The second sound absorption member (62) is arranged on the inner surface side of the upper side wall, front side wall, rear side wall, left side wall, and right side wall of the sound insulation member (60), respectively.

[0047] 〔Principal parts of the outdoor unit (20)〕 Next, with reference to FIGS. 4, 5, and 6, the principal parts of the outdoor unit (20) will be described. FIG. 4 corresponds to an enlarged plan sectional view showing the principal parts of the outdoor unit (20). FIG. 5 corresponds to a view of the section taken along line V-V of FIG. 4 as seen from the right side. FIG. 6 corresponds to a view of the section taken along line VI-VI of FIG. 5 as seen from the rear side.

[0048] 〈Opening〉 As shown in FIG. 4, an opening (70a) is formed in the casing (70). Similarly, an opening (60a) is formed in the sound insulation member (60), an opening (61a) is formed in the first sound absorption member (61), and an opening (62a) is formed in the second sound absorption member (62). Hereinafter, these openings will be referred to as "openings (60a, 61a, 62a, 70a)".

[0049] In the openings (60a, 61a, 62a, 70a), a fluid pipe (17) is inserted. The cross-sectional shape of the openings (60a, 61a, 62a, 70a) (the shape of the cross-section orthogonal to the direction in which the fluid pipe (17) is inserted) corresponds to the cross-sectional shape of the fluid pipe (17). In this example, the cross-sectional shape of the fluid pipe (17) is circular, and the cross-sectional shape of the openings (60a, 61a, 62a, 70a) is circular and larger than the cross-sectional shape of the fluid pipe (17).

[0050] 〈Hydrothermal Exchanger〉 The hydrothermal exchanger (15) is housed in the machine room (S1) together with the compressor (30). As shown in FIGS. 5 and 6, in this example, the hydrothermal exchanger (15) is placed on the first support member (51). Note that the hydrothermal exchanger (15) is not fixed to the first support member (51). The first support member (51) is a plate-like member and is, for example, a metal member. The first support member (51) is supported by a plurality of second anti-vibration members (42).

[0051] Note that the first support member (51) is an example of a mounting member (81) on which the hydrothermal exchanger (15) is placed. The second anti-vibration member (42) that supports the first support member (51) is an example of an anti-vibration member (82) that supports the mounting member (81).

[0052] 〈Fluid Pipe〉 The fluid pipe (17) is inserted into the openings (60a, 61a, 62a, 70a) and connected to the hydrothermal exchanger (15). In this example, two fluid pipes (17) are connected to the hydrothermal exchanger (15). One of the two fluid pipes (17) is connected to the inlet of the water flow path of the hydrothermal exchanger (15), and the other of the two fluid pipes (17) is connected to the outlet of the water flow path of the hydrothermal exchanger (15). The inlet and outlet of the water flow path of the hydrothermal exchanger (15) are provided on a connection surface (the rear surface in this installation state), which is one surface of the hydrothermal exchanger (15).

[0053] Also, in this example, the two fluid pipes (17) extend in parallel in the front-rear direction while being spaced apart from each other at a predetermined interval in the vertical and horizontal directions within the machine room (S1), and are respectively connected to the inlet and outlet of the water flow path provided on the connection surface of the water heat exchanger (15). As shown in FIG. 6, when viewed from the rear side of the outdoor unit (20), the two fluid pipes (17) face each other at a predetermined interval in an oblique direction from the upper right to the lower left.

[0054] The oblique direction from the upper right to the lower left is an example of an oblique direction from one side of each of the left-right direction and the vertical direction to the other side of each of the left-right direction and the vertical direction. Also, the front-rear direction, which is the extending direction of the fluid pipe (17), is an example of a direction along the horizontal direction. The left-right direction is an example of a direction orthogonal to the extending direction of the fluid pipe (17) and along the horizontal direction.

[0055] 〈Support portion〉 A support portion (18) is arranged near the water heat exchanger (15). The support portion (18) is arranged in the machine room (S1), which is the internal space of the casing (70), and supports the fluid pipe (17). In this example, the support portion (18) is fixed to the mounting member (81). Also, the support portion (18) supports the fluid pipe (17) so that the fluid pipe (17) is inserted into the openings (70a, 60a, 61a, 62a) with a predetermined gap therebetween.

[0056] The above-mentioned "state where the fluid pipe (17) is separated from the openings (70a, 60a, 61a, 62a) by a predetermined gap" specifically means a state where the outer peripheral surface of the fluid pipe (17) and the inner peripheral surface of the openings (70a, 60a, 61a, 62a) face each other at a predetermined interval over the entire circumference. For example, the length of the predetermined gap (predetermined interval) is 5 mm.

[0057] The support part (18) has a base part (18a) and a fixture (18b). A recess (18c) is provided in the base part (18a). In this example, the support part (18) has two fixtures (18b) corresponding to the two fluid pipes (17). Two recesses (18c) corresponding to the two fluid pipes (17) are provided in the base part (18a).

[0058] The base part (18a) is fixed to the mounting member (81). For example, the base part (18a) is a plate-shaped member and is a metal member. The base part (18a) is screwed to the mounting member (81). By releasing this screwing, the base part (18a) can be removed from the mounting member (81).

[0059] The fluid pipe (17) is fitted into the recess (18c) of the base part (18a). The cross-sectional shape of the recess (18c) (the shape of the cross-section orthogonal to the extending direction of the fluid pipe (17)) corresponds to the cross-sectional shape of the fluid pipe (17). As shown in FIG. 6, in this example, the cross-sectional shape of the recess (18c) is an arc shape (specifically, a semi-arc shape) with a diameter larger than the diameter of the fluid pipe (17). Further, the recess (18c) is recessed in a predetermined direction so that the fluid pipe (17) can be fitted from a predetermined direction (in this example, the lower right).

[0060] The fixture (18b) is attached to the base part (18a) to fix the fluid pipe (17) fitted into the recess (18c) of the base part (18a). In this example, the fixture (18b) has a curved part having a cross-sectional shape corresponding to the cross-sectional shape of the fluid pipe (17) (the shape of the cross-section orthogonal to the extending direction of the fluid pipe (17)) and a fixing part connected to the curved part.

[0061] With the fluid pipe (17) sandwiched between the curved part of the fixture (18b) and the recess (18c) of the base part (18a), the fixing part of the fixture (18b) is screwed to the base part (18a), so that the fluid pipe (17) is fixed and supported. Also, by releasing the screwing of the fixture (18b), the fixture (18b) can be removed from the base part (18a), and the fluid pipe (17) can be removed from the recess (18c) of the base part (18a).

[0062] [Comparison between the Embodiment and the Comparative Example] Next, taking the outdoor unit (20) without the support portion (18) as a "Comparative Example", the outdoor unit (20) of the embodiment and the Comparative Example will be compared and described. Hereinafter, for convenience of explanation, the same reference numerals as those attached to the components of the outdoor unit (20) of the embodiment are also used for the components of the Comparative Example.

[0063] In the case of the above Comparative Example (the outdoor unit (20) without the support portion (18)), the portion that supports the fluid pipe (17) in the outdoor unit (20) is only the connection portion between the water heat exchanger (15) and the fluid pipe (17) (specifically, the inlet or outlet of the water flow path included in the water heat exchanger (15)). Therefore, during the installation work (or removal work) of the water heat exchanger (15) or the fluid pipe (17), the force (stress) applied to the fluid pipe (17) is transmitted to the water heat exchanger (15) via the connection portion between the water heat exchanger (15) and the fluid pipe (17). As a result, there is a possibility that the components (for example, the plates constituting the refrigerant flow path and the water flow path) in the water heat exchanger (15) may be damaged by that force.

[0064] In addition, when the vibration in the outdoor unit (20) is transmitted to the fluid pipe (17), similarly to the above example, the force applied to the fluid pipe (17) is transmitted to the water heat exchanger (15), and there is a possibility that the water heat exchanger may be damaged by that force.

[0065] On the other hand, in the outdoor unit (20) of the embodiment, the support portion (18) that supports the fluid pipe (17) inhibits the force applied to the fluid pipe (17) from being transmitted to the water heat exchanger (15). Thereby, it becomes possible to prevent the water heat exchanger (15) from being damaged by the force transmitted from the fluid pipe (17).

[0066] [Effects of the Embodiment] As described above, in the refrigeration cycle apparatus (1) of the embodiment, an opening (70a) is formed in the casing (70). The compressor (30) and the water heat exchanger (15) are disposed in the internal space (S1) of the casing (70). The fluid pipe (17) is inserted through the opening (70a) of the casing (70) and connected to the water heat exchanger (15). The support portion (18) is disposed in the internal space (S1) of the casing (70) and supports the fluid pipe (17).

[0067] In the above configuration, the support portion (18) that supports the fluid pipe (17) can inhibit the propagation of the force (stress) applied to the fluid pipe (17). Thereby, it is possible to suppress the force applied to the fluid pipe (17) from propagating to the water heat exchanger (15). As a result, it is possible to prevent the water heat exchanger (15) from being damaged by the force transmitted from the fluid pipe (17).

[0068] Further, in the refrigeration cycle apparatus (1) of the embodiment, the outdoor unit (20) includes a mounting member (81) on which the water heat exchanger (15) is mounted, and a vibration isolation member (82) that supports the mounting member (81). The support portion (18) is fixed to the mounting member (81).

[0069] In the above configuration, by supporting the mounting member (81) on which the water heat exchanger (15) and the support portion (18) are disposed with the vibration isolation member (82), the vibration of the water heat exchanger (15) and the support portion (18) can be suppressed. Further, since the water heat exchanger (15) and the support portion (18) can be disposed in the same vibration system, the force applied to the water heat exchanger (15) due to the difference in vibration between the water heat exchanger (15) and the support portion (18) can be reduced.

[0070] Further, in the refrigeration cycle apparatus (1) of the embodiment, the support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) is inserted through the opening (70a) of the casing (70) with a predetermined gap from the opening (70a) of the casing (70).

[0071] In the above configuration, contact between the fluid pipe (17) and the opening (70a) of the casing (70) can be suppressed, so that the generation of contact noise can be suppressed. Thereby, the noise of the outdoor unit (20) can be reduced.

[0072] Further, in the refrigeration cycle apparatus (1) of the embodiment, the outdoor unit (20) is disposed in the internal space (S1) of the casing (70) and includes a sound insulation member (60) that surrounds the compressor (30) and the water heat exchanger (15). An opening (60a) is formed in the sound insulation member (60). The support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) is inserted through the opening (70a) of the casing (70) and the opening (60a) of the sound insulation member (60) with a predetermined gap therebetween.

[0073] In the above configuration, the double sound insulation structure of the sound insulation member (60) and the casing (70) can suppress the leakage of radiated sound and vibration sound from the compressor (30) and the water heat exchanger (15) to the outside.

[0074] Also, in the above configuration, contact between the "fluid pipe (17)" and the "opening (70a) of the casing (70) and the opening (60a) of the sound insulation member (60)" can be suppressed, so that the generation of contact noise can be suppressed. Thereby, the noise of the outdoor unit (20) can be reduced.

[0075] Further, in the refrigeration cycle apparatus (1) of the embodiment, the outdoor unit (20) includes a first sound absorption member (61). The first sound absorption member (61) is provided between the outer surface of the sound insulation member (60) and the inner surface of the casing (70).

[0076] In the above configuration, the first sound absorption member (61) can suppress a decrease in sound insulation performance due to the low-frequency resonance transmission phenomenon and enhance the soundproofing effect.

[0077] Specifically, when two plates form a double structure through a hollow layer, the two plates become two masses, and the air in the hollow layer acts as a spring connecting them and vibrates, resulting in a resonance phenomenon. In this case, the transmission loss becomes lower than that predicted by the mass law, and the sound insulation performance deteriorates. Since this phenomenon generally occurs in the low-frequency range, it is called the low-frequency resonance transmission phenomenon.

[0078] On the other hand, in the refrigeration cycle device (1) of the embodiment, since the first sound absorption member (61) is provided in the gap between the outer surface of the sound insulation member (60) and the inner surface of the casing (70), it is possible to suppress the occurrence of a resonance phenomenon in which the air in the gap between the sound insulation member (60) and the casing (70) vibrates as a spring.

[0079] Also, in the refrigeration cycle device (1) of the embodiment, the outdoor unit (20) includes a second sound absorption member (62). The second sound absorption member (62) is provided on the inner surface of the sound insulation member (60).

[0080] In the above configuration, the sound insulation effect can be enhanced by the second sound absorption member (62) absorbing the radiated sound and vibration sound from the compressor (30) and the water-heat exchanger (15).

[0081] Specifically, when the compressor (30) and the water-heat exchanger (15) as sound sources are enclosed and sealed by a box-shaped member, i.e., the sound insulation member (60), a so-called build-up phenomenon occurs in which the sound pressure level around the compressor (30) and the water-heat exchanger (15) increases due to the reflection of sound by the sound insulation member (60) compared to the case where there is no sound insulation member (60).

[0082] As a result, the sound pressure level outside the sound insulation member (60) is a value obtained by subtracting the transmission loss of the sound insulation member (60) and the build-up from the sound pressure level in the case where there is no sound insulation member (60). Therefore, the amount of sound reduction due to the provision of the sound insulation member (60) becomes smaller than the value expected based on the transmission loss.

[0083] Therefore, in the refrigeration cycle apparatus (1) of the embodiment, a second sound absorption member (62) is provided on the inner surface of the sound insulation member (60) so as to attenuate the sound pressure level inside the sound insulation member (60). Thereby, the build-up can be suppressed.

[0084] Further, in the refrigeration cycle apparatus (1) of the embodiment, the support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) is inserted into the openings (70a, 60a, 61a, 62a) with a predetermined gap therebetween.

[0085] In the above configuration, contact between the fluid pipe (17) and the openings (70a, 60a, 61a, 62a) can be suppressed, so that the generation of contact sound can be suppressed. Thereby, the noise of the outdoor unit (20) can be reduced.

[0086] (Modification of the embodiment) FIG. 7 illustrates a main part of the outdoor unit (20) in a modification of the embodiment. The outdoor unit (20) in the modification of the embodiment includes a heat insulation member (63) in addition to the configuration of the outdoor unit (20) of the embodiment.

[0087] The heat insulation member (63) has elasticity and is wound around the fluid pipe (17). For example, the heat insulation member (63) is a sheet-like member and is composed of a heat insulating material having elasticity, heat insulating properties, and sound absorption properties such as glass wool. In this example, the heat insulation member (63) covers the entire circumference of the portion of the fluid pipe (17) disposed inside the openings (60a, 61a, 62a, 70a).

[0088] In the modification of the embodiment, the support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) wound with the heat insulation member (63) is inserted into the openings (60a, 61a, 62a, 70a) with a predetermined gap therebetween. Other configurations of the outdoor unit (20) of the embodiment are the same as those of the outdoor unit (20) of the embodiment.

[0089] [Effect of Modification of Embodiment] In the refrigeration cycle apparatus (1) according to the modification of the embodiment, the same effects as those of the refrigeration cycle apparatus (1) of the embodiment can be obtained.

[0090] Also, in the refrigeration cycle apparatus (1) according to the modification of the embodiment, the outdoor unit (20) includes a heat insulating member (63). The heat insulating member (63) has elasticity and is wound around the fluid pipe (17). The support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) around which the heat insulating member (63) is wound is inserted through the opening (70a) of the casing (70) and the opening (60a) of the sound insulating member (60) with a predetermined gap therebetween.

[0091] In the above configuration, by winding the elastic heat insulating member (63) around the fluid pipe (17), even if the fluid pipe (17) around which the heat insulating member (63) is wound comes into contact with "the opening (70a) of the casing (70) and the opening (60a) of the sound insulating member (60)", the contact sound can be suppressed by the elasticity of the heat insulating member (63). Thereby, the noise of the outdoor unit (20) can be reduced.

[0092] Also, in the refrigeration cycle apparatus (1) according to the modification of the embodiment, the support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) around which the heat insulating member (63) is wound is inserted through the openings (70a, 60a, 61a, 62a) with a predetermined gap therebetween.

[0093] In the above configuration, even if the fluid pipe (17) around which the heat insulating member (63) is wound comes into contact with the openings (70a, 60a, 61a, 62a), the contact sound can be suppressed by the elasticity of the heat insulating member (63). Thereby, the noise of the outdoor unit (20) can be reduced.

[0094] (Other Embodiments) In the above description, it may be configured or set as follows.

[0095] The outdoor unit (20) may not include the first sound absorbing member (61) and the second sound absorbing member (62). Also, the outdoor unit (20) may not include the vibration isolating member (82). The mounting member (81) may not be supported by the vibration isolating member (82). For example, the mounting member (81) may be the bottom plate (72) of the casing (70).

[0096] The refrigeration cycle apparatus (1) may supply the water heated by the water heat exchanger (15) to a supply target other than the hot water tank. The supply targets include a bath, a shower, a floor heating device, an air heat exchanger, and the like.

[0097] The heat source unit (20) does not necessarily have to be installed outdoors and may be installed indoors. In this case, the heat source side heat exchanger may be configured by a heat exchanger that exchanges heat between a heat medium such as water and the refrigerant instead of the outdoor heat exchanger (21).

[0098] Also, although the embodiments and modifications have been described, 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 elements according to the above embodiments, modifications, and other embodiments may be combined or replaced as appropriate.

[0099] Also, the descriptions of "first", "second", "third",... in the specification and claims are used to distinguish the clauses to which these descriptions are given, and do not limit even the number and order of those clauses.

Industrial Applicability

[0100] As described above, the present disclosure is useful as a heat source unit and a refrigeration cycle apparatus.

Explanation of Reference Numerals

[0101] 1 Refrigeration cycle apparatus 15 Water heat exchanger 17 Fluid piping 18 Support part 20 Outdoor unit (heat source unit) 30 Compressor 41 First vibration isolation member 42 Second vibration isolation member 51 First support member 52 Second support member 60 Sound insulation member 60a Opening 61 First sound absorption member 61a Opening 62 Second sound absorption member 62a Opening 63 Heat insulation member 65 Accommodation space 70 Casing 70a Opening 81 Mounting member 82 Vibration isolation member S1 Machine room (internal space)

Claims

1. A casing (70) having an opening (70a), A compressor (30) and a hydrothermal exchanger (15) disposed in the internal space (S1) of the casing (70), A mounting member (81) on which the hydrothermal exchanger (15) is mounted, A vibration isolation member (82) that supports the mounting member (81), A fluid pipe (17) inserted through the opening (70a) of the casing (70) and connected to the hydrothermal exchanger (15), And a support portion (18) disposed in the internal space (S1) of the casing (70) and supporting the fluid pipe (17). The support portion (18) is fixed to the mounting member (81). A heat source unit.

2. In the heat source unit according to Claim 1, The support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) is inserted through the opening (70a) of the casing (70) with a predetermined gap from the opening (70a) of the casing (70). A heat source unit.

3. In the heat source unit according to Claim 2, A sound insulation member (60) disposed in the internal space (S1) of the casing (70) and surrounding the compressor (30) and the hydrothermal exchanger (15) is provided. An opening (60a) is formed in the sound insulation member (60). The support portion (18) supports the fluid pipe (17) such that the fluid pipe (17) is inserted through the opening (70a) of the casing (70) and the opening (60a) of the sound insulation member (60) with a predetermined gap from the opening (70a) of the casing (70) and the opening (60a) of the sound insulation member (60). A heat source unit.

4. In the heat source unit according to Claim 3, It has elasticity and is provided with a heat insulating member (63) wound around the fluid pipe (17). The support part (18) supports the fluid pipe (17) such that the fluid pipe (17) around which the heat insulating member (63) is wound is inserted into the opening (70a) of the casing (70) and the opening (60a) of the sound insulating member (60) with a predetermined gap therebetween. Heat source unit.

5. In the heat source unit according to claim 3, It is provided with a first sound absorbing member (61) provided between the outer surface of the sound insulating member (60) and the inner surface of the casing (70). Heat source unit.

6. In the heat source unit according to claim 5, It is provided with a second sound absorbing member (62) provided on the inner surface of the sound insulating member (60). Heat source unit.

7. A refrigeration cycle device including the heat source unit according to any one of claims 1 to 6.

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