Heat source unit and refrigeration cycle device

Abstract

To restrain noise of a compressor covered by a sound insulating member from leaking to the outside of the sound insulating member.SOLUTION: A heat source unit (20) comprises: a casing (70); devices (80) arranged in an internal space (S1) of the casing (70); and a sound insulating member (60) arranged in the internal space (S1), and covering the devices (80) so as to partition a housing space (61) housing the devices (80). The devices (80) include a compressor (30). Holes (62) are bored in the sound insulating member (60). Connection members (10) connected to the devices (80) are passed through the holes (62). An opening ratio (E) of cross-sectional areas other than portions blocked by the connection members (10) in the holes (62) to the total surface area of the sound insulating member (60) is 2.5% or less.SELECTED DRAWING: Figure 8

Description

[Technical field]

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

[0002] Patent Document 1 discloses a heat source unit (outdoor unit) in which a compressor soundproof box containing a compressor is arranged in a machine room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6501908 Summary of the Invention [Problem to be solved by the invention]

[0004] When the compressor is covered with a sound-proofing material as in Patent Document 1, the connection members such as pipes and wires connected to the compressor need to pass through holes in the sound-proofing material. Even though the compressor is covered with the sound-proofing material, the noise generated by the compressor leaks out through the holes in the sound-proofing material.

[0005] An object of the present disclosure is to suppress noise generated in a compressor covered with a sound-insulating material from leaking out of the sound-insulating material. [Means for solving the problem]

[0006] A first aspect of the present disclosure is directed to a heat source unit (20). The heat source unit (20) includes a casing (70), a device (80) arranged in an internal space (S1) of the casing (70), and a sound insulation member (60) arranged in the internal space (S1) and covering the device (80) so as to define an accommodation space (61) that accommodates the device (80), the device (80) includes a compressor (30), a hole (62) is formed in the sound insulation member (60), a connection member (10) connected to the device (80) is passed through the hole (62), and an opening ratio (E) of a cross-sectional area of ​​the hole (62) excluding a portion blocked by the connection member (10) with respect to a total surface area of ​​the sound insulation member (60) is 2.5% or less.

[0007] According to the first aspect, by setting the opening ratio (E) of the sound insulation member (60) to 2.5% or less, it is possible to prevent noise generated by the compressor (30) covered by the sound insulation member (60) from leaking out of the sound insulation member (60).

[0008] In a second aspect of the present disclosure, in the first aspect, the heat source unit (20) further includes a first sound absorbing material (111) provided on the inner surface of the sound insulation member (60).

[0009] According to the second aspect, the soundproofing effect can be improved by the first sound absorbing material (111).

[0010] A third aspect of the present disclosure is the first or second aspect, wherein the heat source unit (20) includes a second sound-absorbing material (112) provided between an outer surface of the sound-proof member (60) and an inner surface of the casing (70).

[0011] According to the third aspect, the soundproofing effect can be improved by the second sound absorbing material (112).

[0012] A fourth aspect of the present disclosure is any one of the first to third aspects, wherein the heat source unit (20) includes a first vibration-damping member (41) supporting the compressor (30), a first support member (51) supporting the first vibration-damping member (41), a second vibration-damping member (42) supporting the first support member (51), and a second support member (52) supporting the second vibration-damping member (42).

[0013] According to the fourth aspect, the compressor (30) is supported by a two-layer vibration-proof structure in which the first vibration-proof member (41) and the second vibration-proof member (42) are stacked, thereby making it possible to attenuate vibrations of the compressor (30).

[0014] A fifth aspect of the present disclosure is any one of the first to fourth aspects, wherein the connection member (10) includes a pipe (8) or a wiring (9) connected to the device (80).

[0015] According to the fifth aspect, it is necessary to form holes 62 in the sound insulation member 60 in order to connect the pipes 8 or the wires 9 serving as the connection members 10 to the device 80. In such a case, it is effective to set the opening ratio E of the sound insulation member 60 to 2.5% or less.

[0016] A sixth aspect of the present disclosure is the fifth aspect, wherein the equipment (80) includes a water heat exchanger (15), and the piping (8) connected to the water heat exchanger (15) is passed through the hole (62).

[0017] According to the sixth aspect, in order to connect the pipe (8) to the water heat exchanger (15), it is necessary to form a hole (62) in the sound insulation member (60). In such a case, it is effective to set the opening ratio (E) of the sound insulation member (60) to 2.5% or less.

[0018] A seventh aspect of the present disclosure is any one of the first to sixth aspects, wherein the sound-proofing member (60) includes a first part (P1) and a second part (P2) separated from each other, and the hole (62) is formed by a notch (100) provided in either or both of a first end (P1a) of the first part (P1) and a second end (P2a) of the second part (P2).

[0019] According to the seventh aspect, even after the connecting member (10) is connected to the equipment (80), the hole (62) can be easily formed by matching the first end (P1a) of the first part (P1) and the second end (P2a) of the second part (P2) of the sound-proofing member (60).

[0020] An eighth aspect of the present disclosure is the seventh aspect, wherein the first end (P1a) and the second end (P2a) overlap each other.

[0021] The eighth aspect is advantageous in reducing the opening ratio (E) of the sound insulation member (60).

[0022] A ninth aspect of the present disclosure is any one of the first to eighth aspects, wherein the heat source unit (20) is provided with a protective member (67) that protects the connecting member (10) from an edge of the hole (62), and an opening ratio (E) of a cross-sectional area of ​​the hole (62) excluding a portion blocked by the connecting member (10) and the protective member (67) relative to a total surface area of ​​the sound-proofing member (60) is 2.5% or less.

[0023] According to the ninth aspect, not only the connection member (10) but also the protective member (67) closes the hole (62), so that the opening ratio (E) of the sound insulation member (60) can be easily reduced.

[0024] A tenth aspect of the present disclosure is directed to a refrigeration cycle apparatus (1). The refrigeration cycle apparatus (1) includes a heat source unit (20) according to any one of the first to ninth aspects. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 shows a circuit diagram of a refrigeration cycle device (1) according to a first embodiment. [Diagram 2] FIG. 2 shows a front cross-sectional view of the outdoor unit (20) according to the first embodiment, as seen from the front. [Diagram 3] FIG. 3 is a plan cross-sectional view of the outdoor unit (20) according to the first embodiment, seen from above. [Figure 4] FIG. 4 is a rear view of the sound-proof member (60) according to the first embodiment, as seen from the rear. [Diagram 5] FIG. 5 is a cross-sectional plan view showing the first member (91) and the second member (92) of the sound insulation member (60) according to the first embodiment, as viewed from above. [Figure 6] FIG. 6 shows a plan view of the sound-proof member (60) according to the first embodiment, seen from above. [Figure 7] FIG. 7 is a rear view of the sound-proof member (60) and the connecting member (10) according to the first embodiment, as viewed from the rear. [Figure 8] FIG. 8 is a rear cross-sectional view showing the connection member (10) to be passed through the hole (62) of the sound-proof member (60) according to the first embodiment, as viewed from the rear. [Figure 9] FIG. 9 is a plan view showing the sound-proof member (60) and the connecting member (10) according to the first embodiment, as viewed from above. [Figure 10] FIG. 10 is an enlarged plan view of the sound-proof member (60) and the connection member (10) according to the first embodiment, viewed from above. [Figure 11] FIG. 11 is a graph showing the relationship between the aperture ratio (E) and the noise increase rate (F) according to the first embodiment. [Figure 12] FIG. 12 is a view corresponding to FIG. 2 according to the second embodiment. [Figure 13] FIG. 13 is a view corresponding to FIG. 3 according to the second embodiment. [Figure 14] FIG. 14 is a view corresponding to FIG. 2 according to the third embodiment. [Figure 15] FIG. 15 is a view corresponding to FIG. 2 according to the fourth embodiment. [Figure 16]FIG. 16 is a view corresponding to FIG. 3 according to the fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below, and various modifications are possible within the scope of the technical idea of ​​the present disclosure. Since each drawing is intended to conceptually explain the present disclosure, dimensions, ratios, or numbers may be exaggerated or simplified as necessary for ease of understanding.

[0027] First Embodiment <Refrigeration cycle equipment> FIG 1 is a circuit diagram showing a refrigeration cycle apparatus (1) according to a first embodiment. As shown in FIG 1, the refrigeration cycle apparatus (1) includes an outdoor unit (20) as a heat source unit. The refrigeration cycle apparatus (1) is a refrigeration cycle apparatus for supplying hot water. The outdoor unit (20) includes a refrigerant circuit (2) and a fluid circuit (12).

[0028] (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 higher specific gravity than air. The refrigerant circuit (2) performs a refrigeration cycle by circulating the refrigerant.

[0029] In the refrigerant circuit (2), a refrigerant cylinder (5), a water heat exchanger (15), an outdoor heat exchanger (21), an outdoor expansion valve (23), a four-way switching valve (24), an accumulator (25), and a compressor (30) are connected by a refrigerant piping (26).

[0030] <Fluid circuit> Water flows through the fluid circuit (12) as a heat medium. In the fluid circuit (12), a water heat exchanger (15) and a fluid pump (16) are connected by fluid piping (17). The fluid pump (16) circulates the water in the fluid circuit (12). The water heated in the water heat exchanger (15) is supplied to a hot water tank, which is a supply destination. The water in the hot water tank returns to the fluid circuit (12) and is heated again in the water heat exchanger (15).

[0031] <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).

[0032] The refrigerant cylinder (5) is filled with refrigerant. The refrigerant cylinder (5) is connected, for example, to a branch pipe branching off from a portion of the refrigerant piping (26) that connects the four-way switching valve (24) and the accumulator (25). After the outdoor unit (20) is transported to the installation site, the refrigerant cylinder (5) opens the on-off valve (6) of the refrigerant cylinder (5) to fill the refrigerant circuit (2) with refrigerant. This makes it possible to prevent flammable refrigerant from leaking from the refrigerant circuit (2) during transportation of the outdoor unit (20).

[0033] The refrigerant pipe (26) of the refrigerant circuit (2) and the fluid pipe (17) of the fluid circuit (12) are connected to the water heat exchanger (15). The water heat exchanger (15) exchanges heat between the refrigerant flowing through the refrigerant pipe (26) of the refrigerant circuit (2) and the water flowing through the fluid pipe (17) of the fluid circuit (12).

[0034] The outdoor heat exchanger (21) is, for example, a cross-fin type fin-and-tube heat exchanger. In the outdoor heat exchanger (21), heat is exchanged between the refrigerant flowing through the outdoor heat exchanger (21) and the air blown by the outdoor fan (22). The outdoor heat exchanger (21) is an example of a heat source side heat exchanger.

[0035] The outdoor expansion valve (23) is, for example, an electronic expansion valve.

[0036] The four-way switching valve (24) has a first port (A1), a second port (A2), a third port (A3), and a fourth port (A4). The four-way switching valve (24) communicates between the first port (A1) and the third port (A3) and also communicates between the second port (A2) and the fourth port (A4).

[0037] The compressor (30) compresses the refrigerant. The compressor (30) is, for example, a rotary compressor such as a scroll compressor. A four-way switching valve (24) is connected to the refrigerant pipe (26) on the discharge side of the compressor (30). An accumulator (25) is connected to the refrigerant pipe (26) on the suction side of the compressor (30).

[0038] In the present embodiment, the refrigeration cycle apparatus (1) has been described as an apparatus having a refrigerant circuit (2) and a fluid circuit (12), but is not limited to this. For example, the refrigeration cycle apparatus (1) may be an air conditioner having a single refrigerant circuit (2).

[0039] <Internal structure of outdoor unit> The internal configuration of the outdoor unit (20) will be described with reference to Figures 2 and 3. Figure 2 shows a front cross-sectional view of the outdoor unit (20) as seen from the front. Figure 3 shows a plan cross-sectional view of the outdoor unit (20) as seen from above.

[0040] In the following description, arrows are used in each drawing to indicate the front, back, left, right, top, and bottom directions. Unless otherwise specified, the directions will be described according to the directions indicated by these arrows.

[0041] As shown in FIGS. 2 and 3, the outdoor unit (20) includes a casing (70), a contained device (80) described below, a sound-proofing member (60), and an inner sound-absorbing material (111) serving as a first sound-absorbing material.

[0042] The casing (70) is formed in a box shape and is made of, for example, a metal plate material. The casing (70) has a top panel (71), a bottom panel (72), a front panel (73), a rear panel (74), a left panel (75), and a right panel (76).

[0043] A partition member (28) is disposed upright inside the casing (70). The partition member (28) is formed, for example, from a metal plate. The partition member (28) divides the interior of the casing (70) into internal spaces, that is, a machine chamber (S1) and a fan chamber (S2).

[0044] The fan chamber (S2) is a space inside the casing (70) to the left of the partition member (28). The outdoor heat exchanger (21), the outdoor fan (22), and the fan motor (22a) are disposed in the fan chamber (S2).

[0045] The casing (70) has an inlet (70a) and an outlet (70b). The inlet (70a) is formed in the rear panel (74) and the left panel (75). The outlet (70b) is formed in the front panel (73).

[0046] When the outdoor fan (22) is rotated by the fan motor (22a), air is drawn into the blower chamber (S2) through the inlet (70a) and exchanges heat with the refrigerant flowing through the outdoor heat exchanger (21). The air after heat exchange is blown out of the blower chamber (S2) through the outlet (70b). In Fig. 3, the air flow is indicated by white arrows.

[0047] The machine room (S1) is a space inside the casing (70) to the right of the partition member (28). The machine room (S1), which is the internal space of the casing (70), accommodates a refrigerant cylinder (5), a water heat exchanger (15), an accumulator (25), a compressor (30), and a sound insulation member (60).

[0048] Here, the refrigerant cylinder (5), the water heat exchanger (15), the accumulator (25), and the compressor (30) constitute a contained equipment (80) as a device. In other words, the contained equipment (80) includes the refrigerant cylinder (5), the water heat exchanger (15), the accumulator (25), and the compressor (30). The contained equipment (80) is disposed in a machine room (S1) as an internal space of the casing (70).

[0049] The compressor (30) has support legs (31). The support legs (31) of the compressor (30) are supported by a plurality of first vibration-isolating members (41). The first vibration-isolating members (41) are made of, for example, rubber or urethane. The first vibration-isolating members (41) are supported by a bottom plate (72) of the casing (70).

[0050] The refrigerant cylinder (5) and the water heat exchanger (15) are supported on a bottom plate (72) of the casing (70). The accumulator (25) is supported by a stay (not shown) at a position separated from the bottom plate (72) of the casing (70).

[0051] The sound-insulating member (60) is formed in a box shape that opens downward. The sound-insulating member (60) is formed in a substantially rectangular parallelepiped shape that opens downward. The sound-insulating member (60) is supported by a bottom plate (72) of the casing (70). The sound-insulating member (60) is made of a non-breathable material. The sound-insulating member (60) is made of, for example, a metal plate or a rubber sheet.

[0052] The sound-proofing member (60) defines an accommodation space (61) for accommodating the accommodated equipment (80) (the refrigerant cylinder (5), the water heat exchanger (15), the accumulator (25), and the compressor (30)). The sound-proofing member (60) covers the accommodated equipment (80). The accommodated equipment (80) is accommodated in the accommodation space (61) within the sound-proofing member (60).

[0053] Specifically, the sound insulation member (60) includes a front wall (60a), a rear wall (60b), a left wall (60c), a right wall (60d), and an upper wall (60e). The sound insulation member (60) does not include a lower wall (bottom wall). The sound insulation member (60) covers the contained device (80) from five directions, namely, the front, rear, left, right, and upper, except for the bottom surface (lower surface).

[0054] In addition to the contained equipment (80), the piping (8) and the wiring (9) are contained in the accommodation space (61) of the sound insulation member (60). The plurality of piping (8) includes a part of the refrigerant piping (26) of the refrigerant circuit (2) and a part of the fluid piping (17) of the fluid circuit (12). One end of the piping (8) is connected to the contained equipment (80) (specifically, the water heat exchanger (15) and the compressor (30)) in the accommodation space (61) of the sound insulation member (60). The other end of the piping (8) is disposed outside the sound insulation member (60). As will be described in detail later, the piping (8) extends from the inside to the outside of the sound insulation member (60) through a hole (62) formed in the sound insulation member (60).

[0055] The wiring (9) is an electric wiring for supplying power to the accommodated device (80) (specifically, the compressor (30)) and transmitting and receiving control signals. One end of the wiring (9) is connected to the accommodated device (80) (specifically, the compressor (30)) in the accommodation space (61) in the sound insulation member (60). The other end of the wiring (9) is disposed outside the sound insulation member (60). As will be described in detail later, the wiring (9) extends from the inside to the outside of the sound insulation member (60) through a hole (62) formed in the sound insulation member (60).

[0056] The piping 8 and the wiring 9 constitute a connection member 10. In other words, the connection member 10 includes the piping 8 and the wiring 9. The piping 8 and the wiring 9 as the connection member 10 are connected to a device 80.

[0057] 2 and 3, the outdoor expansion valve (23) and the four-way selector valve (24) are accommodated in the accommodation space (61) in the sound-proofing member (60). In addition, the accommodation space (61) in the sound-proofing member (60) may accommodate an internal heat exchanger, a muffler, a heat insulating material, a filter, a motor-operated valve, a solenoid valve, a check valve, a three-way valve, etc.

[0058] The inner sound absorbing material (111) is provided on the inner surface of the sound insulation member (60). The inner sound absorbing material (111) is made of, for example, urethane. The inner sound absorbing materials (111) are arranged on the inner surfaces of the front wall (60a), the rear wall (60b), the left wall (60c), the right wall (60d), and the upper wall (60e) of the sound insulation member (60).

[0059] A gap is provided between the outer surface of the sound insulation member (60) and the inner surface of the casing (70). The inner surface of the casing (70) includes the surface of the partition member (28) facing the machine chamber (S1).

[0060] <Back wall of soundproofing material> The detailed structure of the sound-insulating member (60) will be described. First, the configuration of the rear wall (60b) of the sound-insulating member (60) will be described with reference to Figs. 4 and 5. Fig. 4 is a rear view of the sound-insulating member (60) as seen from the rear. Fig. 5 is a plan cross-sectional view of a first member (91) and a second member (92) of the sound-insulating member (60), which will be described later, as seen from above.

[0061] The rear wall (60b) of the sound insulation member (60) is configured in a generally rectangular shape with long sides in the vertical direction and short sides in the horizontal direction. The rear wall (60b) of the sound insulation member (60) includes a first member (91), a second member (92), a third member (93), and a fourth member (94). The first member (91), the second member (92), the third member (93), and the fourth member (94) are separated from one another.

[0062] The first member (91) is plate-shaped and constitutes the right side of the rear wall (60b) of the sound insulation member (60). The first member (91) also constitutes the right wall (60d) and the front wall (60a) of the sound insulation member (60). The second member (92) is plate-shaped and constitutes the left-right central portion and the lower portion of the rear wall (60b) of the sound insulation member (60). The third member (93) is plate-shaped and constitutes the left-right central portion and the upper portion of the rear wall (60b) of the sound insulation member (60). The fourth member (94) is plate-shaped and constitutes the left side of the rear wall (60b) of the sound insulation member (60). The fourth member (94) also constitutes the left wall (60c) of the sound insulation member (60) and also constitutes part of the upper wall (60e) of the sound insulation member (60).

[0063] Holes (62) are formed in the rear wall (60b) of the sound-proofing member (60). The holes (62) in the rear wall (60b) of the sound-proofing member (60) include a first hole (62a), a second hole (62b), a third hole (62c), and a fourth hole (62d).

[0064] (First hole) The first member (91) is the first part (P1). The second member (92) is the second part (P2). The first member (91) (first part (P1)) and the second member (92) (second part (P2)) are adjacent to each other on the left and right, and are separated from each other on the left and right.

[0065] The left end (91a) of the first member (91) is the first end (P1a) of the first part (P1). The right end (92a) of the second member (92) is the second end (P2a) of the second part (P2). The left end (91a) of the first member (91) (the first end (P1a) of the first part (P1)) and the right end (92a) of the second member (92) (the second end (P2a) of the second part (P2)) overlap each other when viewed in the thickness direction (front-rear direction) of the sound insulation member (60) (see FIG. 5).

[0066] Specifically, the right end (92a) of the second member (92) is located forward of the left end (91a) of the first member (91). The left end (91a) of the first member (91) and the right end (92a) of the second member (92) are screwed together.

[0067] A left end portion (91a) of the first member (91) (first end portion (P1a) of the first part (P1)) is provided with a first upper cutout (101a) as the cutout (100) and a first lower cutout (101b) as the cutout (100). The first lower cutout (101b) is disposed below the first upper cutout (101a).

[0068] A right end portion (92a) of the second member (92) (the second end portion (P2a) of the second part (P2)) is provided with a second upper cutout (102a) as the cutout (100) and a second lower cutout (102b) as the cutout (100). The second lower cutout (102b) is disposed below the second upper cutout (102a).

[0069] The first upper cutout (101a) and the second upper cutout (102a) correspond to each other. The first lower cutout (101b) and the second lower cutout (102b) correspond to each other. The first upper cutout (101a), the first lower cutout (101b), the second upper cutout (102a), and the second lower cutout (102b) are formed in an arc shape.

[0070] The first hole (62a) (hole (62)) is formed by a notch (100) provided in both the left end (91a) of the first member (91) (the first end (P1a) of the first part (P1)) and the right end (92a) of the second member (92) (the second end (P2a) of the second part (P2)).

[0071] In detail, the first hole (62a) is composed of a first upper cutout (101a) provided in the left end portion (91a) of the first member (91) and a second upper cutout (102a) provided in the right end portion (92a) of the second member (92). The arc-shaped first upper cutout (101a) and the arc-shaped second upper cutout (102a) are aligned to form the circular first hole (62a).

[0072] (Second hole) The second hole (62b) is located lower than the first hole (62a). The second hole (62b) (hole (62)) is formed by a notch (100) provided in both the left end (91a) of the first member (91) (the first end (P1a) of the first part (P1)) and the right end (92a) of the second member (92) (the second end (P2a) of the second part (P2)).

[0073] In detail, the second hole (62b) is composed of a first lower cutout (101b) provided in the left end portion (91a) of the first member (91) and a second lower cutout (102b) provided in the right end portion (92a) of the second member (92). The first lower cutout (101b) having a circular arc shape and the second lower cutout (102b) having a circular arc shape are joined together to form the second hole (62b) having a circular shape.

[0074] (3rd hole) The first member (91) is the first part (P1). The third member (93) is the second part (P2). The first member (91) (first part (P1)) and the third member (93) (second part (P2)) are adjacent to each other on the left and right, and are separated from each other on the left and right.

[0075] The left end (91a) of the first member (91) is the first end (P1a) of the first part (P1). The right end (93a) of the third member (93) is the second end (P2a) of the second part (P2). The left end (91a) of the first member (91) (the first end (P1a) of the first part (P1)) and the right end (93a) of the third member (93) (the second end (P2a) of the second part (P2)) overlap each other when viewed in the thickness direction (front-rear direction) of the sound-proof member (60).

[0076] Specifically, a right end (93a) of the third member (93) is located forward of a left end (91a) of the first member (91). The left end (91a) of the first member (91) and the right end (93a) of the third member (93) are screwed together.

[0077] A first upper end cutout (101c) is provided as the cutout (100) in the left end (91a) of the first member (91) (the first end (P1a) of the first part (P1)). The first upper end cutout (101c) is disposed above the first upper cutout (101a). The first upper end cutout (101c) is formed in a rectangular shape. The first upper end cutout (101c) is formed in a substantially U-shape (substantially C-shape) that is open to the left.

[0078] A right end portion 93a of the third member 93 (the second end portion P2a of the second part P2) does not have a notch 100. The right end portion 93a of the third member 93 extends vertically in a straight line.

[0079] The third hole (62c) (hole (62)) is formed by a notch (100) provided in either the left end portion (91a) of the first member (91) (the first end portion (P1a) of the first part (P1)) or the right end portion (93a) of the third member (93) (the second end portion (P2a) of the second part (P2)).

[0080] More specifically, the third hole (62c) is formed by a first upper end cutout (101c) provided in the left end (91a) of the first member (91). The rectangular first upper end cutout (101c) in the left end (91a) of the first member (91) and the straight right end (93a) of the third member (93) are aligned to form the rectangular third hole (62c).

[0081] (4th hole) The third member (93) is the first part (P1). The fourth member (94) is the second part (P2). The third member (93) (first part (P1)) and the fourth member (94) (second part (P2)) are adjacent to each other on the left and right and are separated from each other on the left and right.

[0082] The left end (93b) of the third member (93) is the first end (P1a) of the first part (P1). The right end (94a) of the fourth member (94) is the second end (P2a) of the second part (P2). The left end (93b) of the third member (93) (the first end (P1a) of the first part (P1)) and the right end (94a) of the fourth member (94) (the second end (P2a) of the second part (P2)) overlap each other when viewed in the thickness direction (front-rear direction) of the sound-proof member (60).

[0083] Specifically, a right end (94a) of the fourth member (94) is located forward of a left end (93b) of the third member (93). The left end (93b) of the third member (93) and the right end (94a) of the fourth member (94) are screwed together.

[0084] Similarly, the left end (92b) of the second member (92) and the right end (94a) of the fourth member (94) overlap each other when viewed in the thickness direction (front-rear direction) of the sound-proof member (60). The right end (94a) of the fourth member (94) is located forward of the left end (92b) of the second member (92). The left end (92b) of the second member (92) and the right end (94a) of the fourth member (94) are screwed together.

[0085] A third notch (103) serving as the notch (100) is provided at a left end (93b) of the third member (93) (the first end (P1a) of the first part (P1)). A fourth notch (104) serving as the notch (100) is provided at a right end (94a) of the fourth member (94) (the second end (P2a) of the second part (P2)). The third notch (103) and the fourth notch (104) correspond to each other. The third notch (103) and the fourth notch (104) are formed in a rectangular shape.

[0086] The fourth hole (62d) is located to the left of the first hole (62a), the second hole (62b), and the third hole (62c) and is located between the first hole (62a) and the third hole (62c) in the up-down direction.

[0087] The fourth hole (62d) (hole (62)) is formed by a notch (100) provided in both the left end (93b) of the third member (93) (the first end (P1a) of the first part (P1)) and the right end (94a) of the fourth member (94) (the second end (P2a) of the second part (P2)).

[0088] In detail, the fourth hole (62d) is composed of a third cutout (103) provided in the left end (93b) of the third member (93) and a fourth cutout (104) provided in the right end (94a) of the fourth member (94). The rectangular third cutout (103) and the rectangular fourth cutout (104) are aligned to form the rectangular fourth hole (62d).

[0089] <Upper wall of soundproofing material> Next, the configuration of the upper wall (60e) of the sound insulation member (60) will be described with reference to FIG. 6. FIG. 6 shows a plan view of the sound insulation member (60) as viewed from above. The upper wall (60e) of the sound insulation member (60) is configured in a substantially square shape. The upper wall (60e) of the sound insulation member (60) includes the fourth member (94), the fifth member (95), the sixth member (96), and the seventh member (97) described above. The fourth member (94), the fifth member (95), the sixth member (96), and the seventh member (97) are separated from one another.

[0090] The fourth member (94) is plate-shaped and forms the left end portion of the top wall (60e) of the sound insulation member (60). The fifth member (95) is plate-shaped and forms the left-right intermediate portion and rear portion of the top wall (60e) of the sound insulation member (60). The sixth member (96) is plate-shaped and forms the right side and rear portion of the top wall (60e) of the sound insulation member (60). The seventh member (97) is plate-shaped and forms the front portion of the top wall (60e) of the sound insulation member (60).

[0091] The sound-proofing member (60) has an upper wall (60e) formed with holes (62). The holes (62) in the upper wall (60e) of the sound-proofing member (60) include two fifth holes (62e), three sixth holes (62f), and a number of seventh holes (62g).

[0092] (5th hole) The fourth member (94) is the first part (P1). The fifth member (95) is the second part (P2). The fourth member (94) (first part (P1)) and the fifth member (95) (second part (P2)) are adjacent to each other on the left and right, and are separated from each other on the left and right.

[0093] The upper end (94b) of the fourth member (94) is bent to the right. The upper end (94b) of the fourth member (94) is defined as the first end (P1a) of the first part (P1). The left end (95a) of the fifth member (95) is defined as the second end (P2a) of the second part (P2).

[0094] An upper end (94b) bent to the right of the fourth member (94) (the first end (P1a) of the first part (P1)) and a left end (95a) of the fifth member (95) (the second end (P2a) of the second part (P2)) overlap each other when viewed in the thickness direction (up-down direction) of the sound insulation member (60). In detail, the left end (95a) of the fifth member (95) is located higher than the upper end (94b) bent to the right of the fourth member (94).

[0095] The upper end portion (94b) bent to the right of the fourth member (94) (the first end portion (P1a) of the first part (P1)) does not have a notch (100). The upper end portion (94b) bent to the right of the fourth member (94) extends straight in the front-rear direction.

[0096] The fifth member (95) has a left end (95a) provided with a fifth cutout (105) as the cutout (100). There are two fifth cutouts (105). The two fifth cutouts (105) are arranged in a front-to-rear arrangement. The fifth cutout (105) is formed in a rectangular shape. The fifth cutout (105) is formed in a substantially U-shape (substantially C-shape) that is open to the left.

[0097] The fifth hole (62e) (hole (62)) is formed by a notch (100) provided in either the upper end (94b) bent to the right of the fourth member (94) (the first end (P1a) of the first part (P1)) or the left end (95a) of the fifth member (95) (the second end (P2a) of the second part (P2)).

[0098] In detail, the fifth hole (62e) is constituted by a fifth notch (105) provided in the left end portion (95a) of the fifth member (95). The rectangular fifth hole (62e) is formed by combining the straight upper end portion (94b) bent to the right of the fourth member (94) with the rectangular fifth notch (105) in the left end portion (95a) of the fifth member (95). There are two fifth holes (62e). The two fifth holes (62e) are arranged in a front-to-back arrangement.

[0099] (6th hole) The sixth member (96) is the first part (P1). The seventh member (97) is the second part (P2). The sixth member (96) (first part (P1)) and the seventh member (97) (second part (P2)) are adjacent to each other in the front-rear direction and are separated from each other in the front-rear direction.

[0100] The front end 96a of the sixth member 96 is the first end P1a of the first part P1. The rear end 97a of the seventh member 97 is the second end P2a of the second part P2.

[0101] The front end (96a) of the sixth member (96) and the rear end (97a) of the seventh member (97) are butted against each other in the front-rear direction. The front end (96a) of the sixth member (96) is provided with a front protruding piece (96b) that protrudes forward. The front protruding piece (96b) at the front end (96a) of the sixth member (96) overlaps the rear end (97a) of the seventh member (97) when viewed in the plate thickness direction (up-down direction) of the sound insulation member (60). The front protruding piece (96b) at the front end (96a) of the sixth member (96) is located above the rear end (97a) of the seventh member (97).

[0102] A front end portion (96a) of the sixth member (96) (the first end portion (P1a) of the first part (P1)) does not have a notch (100). The front end portion (96a) of the sixth member (96) extends straight in the left-right direction.

[0103] The seventh member (97) has a rear end (97a) provided with seventh notches (107) as the notches (100). There are three seventh notches (107). The three seventh notches (107) are lined up on the left and right. The seventh notches (107) are formed in a rectangular shape. The seventh notches (107) are formed in a substantially U-shape (substantially C-shape) that is open rearward.

[0104] The sixth hole (62f) (hole (62)) is formed by a notch (100) provided in either the front end (96a) of the sixth member (96) (the first end (P1a) of the first part (P1)) or the rear end (97a) of the seventh member (97) (the second end (P2a) of the second part (P2)).

[0105] In detail, the sixth hole (62f) is configured by a seventh notch (107) provided in the rear end portion (97a) of the seventh member (97). The straight front end portion (96a) of the sixth member (96) and the rectangular seventh notch (107) in the rear end portion (97a) of the seventh member (97) are aligned to form the rectangular sixth hole (62f). There are three sixth holes (62f). The three sixth holes (62f) are aligned in a left-right direction.

[0106] (7th hole) A portion of the front end portion (96a) of the sixth member (96) other than the front protruding piece (96b) does not overlap with, but is butted against, the rear end portion (97a) of the seventh member (97) from the front to the rear. A large number of seventh holes (62g) are formed as assembly gaps between the portion of the front end portion (96a) of the sixth member (96) other than the front protruding piece (96b) and the rear end portion (97a) of the seventh member (97).

[0107] The left end portion (96c) of the sixth member (96) and the right end portion (95b) of the fifth member (95) are butted against each other. The left end portion (96c) of the sixth member (96) is provided with a first left protruding piece (96d) that protrudes to the left. There are two first left protruding pieces (96d). The two first left protruding pieces (96d) are arranged in a front-to-back manner. The first left protruding piece (96d) at the left end portion (96c) of the sixth member (96) overlaps with the right end portion (95b) of the fifth member (95) when viewed in the thickness direction (up-down direction) of the sound insulation member (60). The first left protruding piece (96d) at the left end portion (96c) of the sixth member (96) is located above the right end portion (95b) of the fifth member (95) and is screwed to the right end portion (95b) of the fifth member (95).

[0108] The sixth member (96) has a left end (96c) provided with a second left protruding piece (96e) protruding to the left. There are two second left protruding pieces (96e). The two second left protruding pieces (96e) are located further outward in the front-rear direction than the two first left protruding pieces (96d). The second left protruding piece (96e) at the left end (96c) of the sixth member (96) overlaps with the right end (95b) of the fifth member (95) when viewed in the plate thickness direction (up-down direction) of the sound insulation member (60). The second left protruding piece (96e) at the left end (96c) of the sixth member (96) is located lower than the right end (95b) of the fifth member (95).

[0109] A portion of the left end portion 96c of the sixth member 96 other than the first left protruding piece 96d and the second left protruding piece 96e does not overlap with the right end portion 95b of the fifth member 95, but is butted against the left and right of the left end portion 95b of the fifth member 95. A number of seventh holes 62g are formed as assembly gaps between the portion of the left end portion 96c of the sixth member 96 other than the first left protruding piece 96d and the second left protruding piece 96e and the right end portion 95b of the fifth member 95.

[0110] There may be several other seventh holes (62g) serving as assembly gaps.

[0111] <Connection parts that are passed through the holes in the soundproofing material> The connecting member (10) that is passed through the hole (62) of the sound insulation member (60) will be described with reference to Figs. 7 to 10. Fig. 7 shows a rear view of the sound insulation member (60) and the connecting member (10) as seen from the rear. Fig. 8 shows a rear cross-sectional view of the connecting member (10) that is passed through the hole (62) of the sound insulation member (60) as seen from the rear. Fig. 9 shows a plan view of the sound insulation member (60) and the connecting member (10) as seen from above. Fig. 10 shows an enlarged plan view of the sound insulation member (60) and the connecting member (10) as seen from above.

[0112] As shown in FIGS. 7 to 10 , a connection member (10) may be passed through the hole (62). The connection member (10) includes a pipe (8) and a wire (9). The connection member (10) is connected to an accommodated device (80). The accommodated device (80) includes a refrigerant cylinder (5), a water heat exchanger (15), an accumulator (25), and a compressor (30). The accommodated device (80) is accommodated in an accommodation space (61) in the sound insulation member (60).

[0113] Specifically, the connecting member 10 is passed through the first hole 62a, the second hole 62b, the third hole 62c, the fourth hole 62d, the fifth hole 62e, and the sixth hole 62f. The connecting member 10 is not passed through the seventh hole 62g, which serves as an assembly gap.

[0114] As shown in Fig. 8, a first pipe (121) serving as the pipe (8) is passed through the first hole (62a). The first pipe (121) is connected to the water heat exchanger (15). The first pipe (121) constitutes a part of the fluid pipe (17) of the fluid circuit (12). Water to flow into the water heat exchanger (15) flows through the first pipe (121).

[0115] The first pipe (121) includes a first pipe main body (121a) and a first insulating material (121b). The first pipe main body (121a) is formed, for example, in a circular pipe shape. The first insulating material (121b) is wound around the outer periphery of the first pipe main body (121a). The first insulating material (121b) is made of, for example, wool, a foam material, or a fiber material. The outer diameter of the first pipe (121) is the outer diameter when the first insulating material (121b) is wound around the first pipe main body (121a).

[0116] The first upper cutout (101a) and the second upper cutout (102a) are formed in an arc shape so as to fit the outer shape of the first pipe (121).

[0117] A first gap (H1) is formed between the inner edge of the first hole (62a) and the outer periphery of the first pipe (121). The cross-sectional area of ​​the first gap (H1) is the cross-sectional area of ​​the first hole (62a) excluding the portion of the first hole (62a) blocked by the first pipe (121) when viewed in the thickness direction (front-rear direction) of the sound insulation member (60). In other words, the cross-sectional area of ​​the first gap (H1) is obtained by subtracting the cross-sectional area of ​​the first pipe (121) from the cross-sectional area of ​​the first hole (62a) when viewed in the thickness direction (front-rear direction) of the sound insulation member (60).

[0118] In the following description, the term "cross-sectional area" refers to the transverse area when viewed in the thickness direction of the sound insulation member (60) (the surface area in a cross section perpendicular to the thickness direction).

[0119] As shown in Fig. 8, a second pipe (122) serving as the pipe (8) is passed through the second hole (62b). The second pipe (122) is connected to the water heat exchanger (15). The second pipe (122) constitutes a part of the fluid pipe (17) of the fluid circuit (12). Water to flow out from the water heat exchanger (15) flows through the second pipe (122).

[0120] The second pipe (122) includes a second pipe main body (122a) and a second insulating material (122b). The second pipe main body (122a) is formed, for example, in a circular pipe shape. The second insulating material (122b) is wound around the outer periphery of the second pipe main body (122a). The second insulating material (122b) is made of, for example, wool, foamed resin, or fiber material. The outer diameter of the second pipe (122) is the outer diameter when the second insulating material (122b) is wound around the second pipe main body (122a).

[0121] The first lower cutout (101b) and the second lower cutout (102b) are formed in an arc shape so as to fit the outer shape of the second pipe (122).

[0122] A second gap (H2) is formed between the inner edge of the second hole (62b) and the outer periphery of the second pipe (122). The cross-sectional area of ​​the second gap (H2) is the cross-sectional area of ​​the second hole (62b) excluding the portion of the second hole (62b) blocked by the second pipe (122) when viewed in the thickness direction (front-rear direction) of the sound insulation member (60). In other words, the cross-sectional area of ​​the second gap (H2) is obtained by subtracting the cross-sectional area of ​​the second pipe (122) from the cross-sectional area of ​​the second hole (62b) when viewed in the thickness direction (front-rear direction) of the sound insulation member (60).

[0123] As shown in FIG. 7, a third pipe (123) serving as the pipe (8) is passed through the third hole (62c). One end of the third pipe (123) is connected to the compressor (30). The other end of the third pipe (123) is connected to the outdoor heat exchanger (21) via a relay pipe. The third pipe (123) constitutes a part of the refrigerant pipe (26) of the refrigerant circuit (2). Refrigerant flows through the third pipe (123) between the compressor (30) and the outdoor heat exchanger (21). The third pipe (123) is formed, for example, in a circular pipe shape.

[0124] The outdoor unit (20) includes a protective member (67). The protective member (67) is disposed in the hole (62) of the sound insulation member (60). The protective member (67) protects the connection member (10) from the edge (inner edge) of the hole (62).

[0125] The outdoor unit (20) includes a third pipe protection member (63) serving as a protection member (67). The third pipe protection member (63) is disposed in the third hole (62c). The third pipe protection member (63) is made of resin. The third pipe protection member (63) is formed in a rectangular shape so as to correspond to the third hole (62c). The third pipe protection member (63) has a hole through which the third pipe (123) passes. The third pipe protection member (63) protects the third pipe (123) from the edge of the third hole (62c).

[0126] A third gap (H3) is formed between the inner edge of the third hole (62c) and the outer periphery of the third pipe (123). The cross-sectional area of ​​the third gap (H3) is the cross-sectional area of ​​the third hole (62c) excluding the portions of the third hole (62c) that are blocked by the third pipe (123) and the third pipe protection member (63) when viewed in the thickness direction (front-rear direction) of the sound insulation member (60). In other words, the cross-sectional area of ​​the third gap (H3) is obtained by subtracting the cross-sectional areas of the third pipe (123) and the third pipe protection member (63) from the cross-sectional area of ​​the third hole (62c) when viewed in the thickness direction (front-rear direction) of the sound insulation member (60).

[0127] As shown in FIG. 7, a fourth pipe (124) serving as the pipe (8) is passed through the fourth hole (62d). There are two fourth pipes (124). The two fourth pipes (124) are arranged one above the other. One end of the fourth pipe (124) is connected to the compressor (30). Refrigerant flows through the fourth pipe (124). The fourth pipe (124) is formed, for example, in a circular pipe shape.

[0128] The outdoor unit (20) includes a fourth pipe protection member (64) serving as a protection member (67). The fourth pipe protection member (64) is disposed in the fourth hole (62d). The fourth pipe protection member (64) is made of resin. The fourth pipe protection member (64) is formed in a rectangular shape so as to correspond to the fourth hole (62d). The fourth pipe protection member (64) has two holes through which the two fourth pipes (124) pass. The two holes are aligned vertically. The fourth pipe protection member (64) protects the two fourth pipes (124) from the edges of the fourth hole (62d).

[0129] A fourth gap (H4) is formed between the inner edge of the fourth hole (62d) and the outer periphery of the fourth pipe (124). The cross-sectional area of ​​the fourth gap (H4) is the cross-sectional area of ​​the fourth hole (62d) excluding the portions of the fourth hole (62d) that are blocked by the fourth pipe (124) and the fourth pipe protection member (64). In other words, the cross-sectional area of ​​the fourth gap (H4) is obtained by subtracting the cross-sectional areas of the fourth pipe (124) and the fourth pipe protection member (64) from the cross-sectional area of ​​the fourth hole (62d) when viewed in the thickness direction (front-rear direction) of the sound insulation member (60).

[0130] As described above, there are two fifth holes (62e) (see FIG. 6). As shown in FIG. 10, the fifth hole (62e) receives the fifth pipe (125) as the pipe (8). The fifth pipe (125) is connected to the compressor (30). A refrigerant flows through the fifth pipe (125). The fifth pipe (125) is formed, for example, in a cylindrical shape.

[0131] The outdoor unit (20) includes a fifth pipe protection member (65) serving as a protection member (67). The fifth pipe protection member (65) is disposed in the fifth hole (62e). The fifth pipe protection member (65) is made of resin. The fifth pipe protection member (65) is formed in a rectangular shape so as to correspond to the fifth hole (62e). The fifth pipe protection member (65) has a hole through which the fifth pipe (125) passes. The fifth pipe protection member (65) protects the fifth pipe (125) from the edge of the fifth hole (62e).

[0132] A fifth gap (H5) is formed between the inner edge of the fifth hole (62e) and the outer periphery of the fifth pipe (125). The cross-sectional area of ​​the fifth gap (H5) is the cross-sectional area of ​​the fifth hole (62e) excluding the portion blocked by the fifth pipe (125) and the fifth pipe protection member (65) when viewed in the plate thickness direction (vertical direction) of the sound insulation member (60). In other words, the cross-sectional area of ​​the fifth gap (H5) is obtained by subtracting the cross-sectional areas of the fifth pipe (125) and the fifth pipe protection member (65) from the cross-sectional area of ​​the fifth hole (62e) when viewed in the plate thickness direction (vertical direction) of the sound insulation member (60). There are two fifth gaps (H5).

[0133] As described above, there are three sixth holes (62f) (see FIG. 6). As shown in FIGS. 9 and 10, the wires (9) are passed through the sixth holes (62f). One end of the wires (9) is connected to the compressor (30). The other end of the wires (9) is connected to a terminal block located outside the sound insulation member (60). The wires (9) include a core material made of metal and a coating material made of resin that coats the outer periphery of the core material. The cross section of the wires (9) is, for example, circular.

[0134] The outdoor unit (20) includes a wire protection member (66) serving as a protection member (67). The wire protection member (66) is disposed in the sixth hole (62f). The wire protection member (66) is made of resin. The wire protection member (66) is formed in a rectangular shape so as to correspond to the sixth hole (62f). The wire protection member (66) has a hole through which the wire (9) passes. The wire protection member (66) protects the wire (9) from the edge of the sixth hole (62f).

[0135] A sixth gap (H6) is formed between the inner edge of the sixth hole (62f) and the outer periphery of the wiring (9). The cross-sectional area of ​​the sixth gap (H6) is the cross-sectional area of ​​the sixth hole (62f) excluding the portion blocked by the wiring (9) and the wiring protection member (66) when viewed in the thickness direction (vertical direction) of the sound insulation member (60). In other words, the cross-sectional area of ​​the sixth gap (H6) is obtained by subtracting the cross-sectional area of ​​the wiring (9) and the cross-sectional area of ​​the wiring protection member (66) from the cross-sectional area of ​​the sixth hole (62f) when viewed in the thickness direction (vertical direction) of the sound insulation member (60). There are three sixth gaps (H6).

[0136] As described above, there are many seventh holes (62g) serving as assembly gaps (see FIG. 6). As shown in FIGS. 9 and 10, the connecting members (10) (the pipes (8) and the wires (9)) are not passed through the seventh holes (62g).

[0137] A seventh gap (H7) is formed inside the seventh hole (62g). The cross-sectional area of ​​the seventh gap (H7) is the cross-sectional area of ​​the seventh hole (62g) excluding the portion of the seventh hole (62g) blocked by the (non-existent) connecting member (10) and the (non-existent) protective member (67) when viewed in the plate thickness direction (vertical direction) of the sound insulation member (60), and is the same as the cross-sectional area of ​​the seventh hole (62g). There are many seventh gaps (H7).

[0138] <Aperture ratio> The opening ratio (E) of the cross-sectional area of ​​the hole (62) excluding the portions blocked by the connecting member (10) and the protective member (67) to the total surface area of ​​the sound insulation member (60) is preferably 2.5% or less.

[0139] The "cross-sectional area of ​​the hole (62) excluding the portions blocked by the connecting member (10) and the protective member (67)" corresponds to the sum of the cross-sectional area of ​​the first gap (H1), the cross-sectional area of ​​the second gap (H2), the cross-sectional area of ​​the third gap (H3), the cross-sectional area of ​​the fourth gap (H4), the cross-sectional areas of the two fifth gaps (H5), the three sixth gaps (H6), and the cross-sectional areas of numerous seventh gaps (H7).

[0140] The "total surface area of ​​the sound-insulating member 60" refers to the total surface area of ​​one side (outer or inner side) of the sound-insulating member 60. The "total surface area of ​​the sound-insulating member 60" corresponds to the sum of the surface area of ​​one side of the front wall 60a, the surface area of ​​one side of the rear wall 60b, the surface area of ​​one side of the left wall 60c, the surface area of ​​one side of the right wall 60d, and the surface area of ​​one side of the top wall 60e of the sound-insulating member 60.

[0141] FIG. 11 is a graph showing the relationship between the opening ratio (E) and the noise increase rate (F). The horizontal axis is the opening ratio (E) [%]. The vertical axis is the noise increase rate (F) [%]. The noise increase rate (F) indicates the rate of increase in noise value from a reference value when the noise value when the opening ratio (E) is 0% is taken as the reference value. The data in FIG. 11 was obtained by numerical simulation.

[0142] 11, it can be seen that the smaller the aperture ratio (E), the smaller the noise increase rate (F). In particular, when the aperture ratio (E) is 2.5% or less, the noise increase rate (F) is 10% or less.

[0143] The distance between the inner edge of the hole (62) and the outer periphery of the connection member (10) is preferably 5 mm or more on one side (10 mm or more on both sides).

[0144] <Inner sound absorbing material> As described above, the inner sound absorbing material (111) is provided on the inner surface of the sound insulation member (60). The inner sound absorbing material (111) is divided so as to correspond to the first member (91), the second member (92), the third member (93), the fourth member (94), the fifth member (95), the sixth member (96), and the seventh member (97). In other words, the inner sound absorbing material (111) is divided so as to correspond to the first part (P1) and the second part (P2). The first inner sound absorbing material (111) is provided on the inner surface of the first part (P1). The second inner sound absorbing material (111) is provided on the inner surface of the second part (P2).

[0145] <Action and effect> In this embodiment, the compressor (30) is covered with the sound-insulating member (60), thereby forming a double sound-insulating structure consisting of the sound-insulating member (60) and the casing (70). A hole (62) for passing the connecting member (10) is inevitably formed in the sound-insulating member (60).

[0146] Therefore, by setting the opening ratio (E) of the sound insulation member (60) to 2.5% or less, it is possible to prevent noise (radiated sound and vibration sound) generated in the compressor (30) covered by the sound insulation member (60) from leaking out to the outside of the sound insulation member (60).

[0147] An inner sound absorbing material (111) is provided on the inner surface of the sound insulation member (60). The noise from the compressor (30) is absorbed by the inner sound absorbing material (111), thereby improving the soundproofing effect.

[0148] Specifically, when the compressor (30) as a sound source is enclosed in a box-shaped sound-proofing member (60), the sound is reflected by the sound-proofing member (60), causing a phenomenon known as build-up, in which the sound pressure level around the compressor (30) increases compared to when the sound-proofing member (60) is not present.

[0149] As a result, the sound pressure level outside the sound insulation member (60) is equal to the sound pressure level without the sound insulation member (60) minus the transmission loss and build-up of the sound insulation member (60). Therefore, the amount of sound reduction achieved by providing the sound insulation member (60) is smaller than the value expected based on the transmission loss.

[0150] Therefore, in this embodiment, an inner sound absorbing material (111) is provided on the inner surface of the sound insulation member (60) to attenuate the sound pressure level inside the sound insulation member (60), thereby making it possible to suppress build-up.

[0151] In order to connect the pipes 8 or the wires 9 as the connection members 10 to the housed devices 80, it is necessary to make holes 62 in the soundproofing member 60. In such a case, it is effective to keep the opening ratio E of the soundproofing member 60 to 2.5% or less.

[0152] In order to connect the pipe (8) (the first pipe (121) and the second pipe (122)) to the water heat exchanger (15), it is necessary to make relatively large holes (62) (the first hole (62a) and the second hole (62b)) in the sound insulation member (60). In such a case, it is very effective to keep the opening ratio (E) of the sound insulation member (60) to 2.5% or less.

[0153] By making the distance between the inner edge of the hole (62) and the outer periphery of the connecting member (10) 5 mm or more on one side (10 mm or more on both sides), it becomes more difficult for the inner edge of the hole (62) of the sound-proofing member (60) and the outer periphery of the connecting member (10) to come into contact with each other, which is advantageous in suppressing contact noise between the sound-proofing member (60) and the connecting member (10).

[0154] Even after the connection member (10) is connected to the housed equipment (80), the hole (62) can be easily formed by mating the first end (P1a) of the first part (P1) and the second end (P2a) of the second part (P2) of the sound-proofing member (60). This makes it easy to assemble the outdoor unit (20).

[0155] The first end (P1a) of the first part (P1) and the second end (P2a) of the second part (P2) of the sound-insulating member (60) overlap each other, which is advantageous in reducing the opening ratio (E) of the sound-insulating member (60). This makes it possible to prevent noise generated by the compressor (30) from leaking out from a gap between the first end (P1a) of the first part (P1) and the second end (P2a) of the second part (P2) of the sound-insulating member (60).

[0156] Since the notch (100) is formed to follow the outer shape of the connecting member (10), it becomes easier to reduce the distance between the inner edge of the hole (62) and the outer periphery of the connecting member (10), which is advantageous in reducing the opening ratio (E) of the sound-proofing member (60).

[0157] Since not only the connecting member (10) but also the protective member (67) closes the hole (62), it becomes easier to reduce the opening ratio (E) of the sound insulation member (60).

[0158] Since the accumulator (25) and the compressor (30) are housed in the soundproofing member (60), this is advantageous in suppressing noise from the accumulator (25).

[0159] Second Embodiment An outdoor unit (20) according to a second embodiment will be described with reference to Figures 12 and 13. In the following description, the same components as those in the above embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

[0160] In this embodiment, no inner sound-absorbing material (111) is provided on the inner surface of the sound-proofing member (60). In this embodiment, the outdoor unit (20) includes an outer sound-absorbing material (112) as a second sound-absorbing material. The outer sound-absorbing material (112) is provided between (in the gap between) the outer surface of the sound-proofing member (60) and the inner surface of the casing (70).

[0161] The outer sound absorbing material (112) is made of, for example, urethane, and is divided into a first part (P1) and a second part (P2).

[0162] The other configurations are similar to those of the first embodiment.

[0163] According to this embodiment, the outer sound absorbing material (112) can suppress the deterioration of sound insulation performance caused by the low frequency resonance transmission phenomenon, and can improve the soundproofing effect.

[0164] Specifically, when two plates form a double structure with a hollow space between them, the two plates become two masses, and the air in the hollow space acts as a spring connecting them, causing them to vibrate, resulting in a resonance phenomenon. In this case, the transmission loss is lower than the mass law, and sound insulation performance is reduced. This phenomenon generally occurs in the low frequency range, so it is called the low frequency resonance transmission phenomenon.

[0165] In the present embodiment, an outer sound-absorbing material (112) is provided between (in the gap) the outer surface of the sound-proofing member (60) and the inner surface of the casing (70), thereby making it possible to suppress the occurrence of a resonance phenomenon in which the air in the gap between the sound-proofing member (60) and the casing (70) acts as a spring and vibrates.

[0166] Third Embodiment An outdoor unit (20) according to a third embodiment will be described with reference to Fig. 14. In the following description, the same components as those in the above embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

[0167] In this embodiment, as in the first embodiment, an inner sound absorbing material (111) is provided on the inner surface of the sound insulation member (60). In this embodiment, as in the second embodiment, an outer sound absorbing material (112) is provided between (in the gap between) the outer surface of the sound insulation member (60) and the inner surface of the casing (70).

[0168] The other configurations are similar to those of the first and second embodiments.

[0169] According to this embodiment, it is possible to obtain the effects obtained by combining (both) the first and second embodiments.

[0170] Fourth Embodiment An outdoor unit (20) according to a fourth embodiment will be described with reference to Figures 15 and 16. In the following description, the same components as those in the above embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

[0171] The outdoor unit (20) includes a first vibration-isolating member (41), a first support member (51), a second vibration-isolating member (42), and a second support member (52). The compressor (30) has a support leg (31). The support leg (31) of the compressor (30) is supported by a plurality of first vibration-isolating members (41). The first vibration-isolating member (41) is supported by a first support member (51). The first support member (51) is supported by a plurality of second vibration-isolating members (42). The second vibration-isolating member (42) is supported by the second support member (52). The first support member (51) is formed of, for example, a metal plate. In this example, the second support member (52) is a bottom plate (72) of the casing (70).

[0172] The first vibration-isolating member 41 and the second vibration-isolating member 42 are made of rubber or urethane. The material and spring constant of the first vibration-isolating member 41 and the material and spring constant of the second vibration-isolating member 42 may be the same as or different from each other.

[0173] The other configurations are similar to those of the third embodiment.

[0174] According to the present embodiment, the compressor (30) is supported by a two-layer vibration-isolating structure in which the first vibration-isolating member (41) and the second vibration-isolating member (42) are stacked together, thereby making it possible to attenuate vibrations of the compressor (30).

[0175] This reduces the vibrations transmitted from the compressor (30) to the first support member (51) and the second support member (52), thereby suppressing the generation of vibration noise caused by the vibrations of the first support member (51) and the second support member (52).

[0176] Other embodiments The refrigeration cycle apparatus (1) may supply the water heated in the water heat exchanger (15) to a supply target other than the hot water tank, which may include a bath, a shower, a floor heating system, an air heat exchanger, and the like.

[0177] The heat source unit (20) of the refrigeration cycle apparatus (1) may not have a water heat exchanger (15) and may be connected to a utilization unit via a refrigerant pipe to form a refrigerant circuit. The utilization unit has a utilization heat exchanger that adjusts the temperature of air by a refrigerant. The utilization unit may be an air conditioning unit that conditions the target space. In this case, the air conditioning unit may be a ceiling-mounted type, a wall-mounted type, or a floor-standing type. The utilization unit may be a cooling unit that cools the air inside a storage unit. The cooling unit may cool the interior of a shipping container for sea or land use.

[0178] 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 is not the outdoor heat exchanger (21), but is configured as a heat exchanger that exchanges heat between a heat medium such as water and a refrigerant.

[0179] The first sound absorbing material (111) and the second sound absorbing material (112) may be omitted.

[0180] The sound insulation member (60) may be configured as a single piece, instead of being divided into the first part (P1) and the second part (P2).

[0181] Although the embodiment and the modified examples have been described above, it will be understood that various modifications of the form and details are possible without departing from the spirit and scope of the claims. In addition, the elements of the above embodiment, modified examples, and other embodiments may be appropriately combined or substituted.

[0182] The descriptions "first," "second," "third," etc. in the specification and claims are used to distinguish the words to which these descriptions are attached, and do not limit the number or order of those words. [Explanation of symbols]

[0183] P1 1st part P1a 1st end P2 2nd part P2a 2nd end S1 Machine room (internal space) E Opening ratio 1 Refrigeration cycle equipment 8 Piping 9 Wiring 10 Connection member 15 Water heat exchanger 20 Outdoor unit (heat source unit) 30 Compressor 41 First vibration-isolating member 42 Second vibration-isolating member 51 First support member 52 Second support member 60 Soundproofing materials 61 Containment Space 62 holes 67 Protective materials 70 Casing 80 Contained equipment (equipment) 100 notch 111 Inner sound absorbing material (first sound absorbing material) 112 Outer sound absorbing material (second sound absorbing material)

Claims

1. A casing (70); a device (80) disposed in an internal space (S1) of the casing (70); a sound insulation member (60) that is disposed in the internal space (S1) and covers the equipment (80) so as to define an accommodation space (61) that accommodates the equipment (80), The equipment (80) includes a compressor (30); The sound-proofing member (60) has a hole (62) formed therein, A connection member (10) to be connected to the device (80) is passed through the hole (62), The heat source unit, wherein an opening ratio (E) of a cross-sectional area of ​​the hole (62) excluding a portion blocked by the connection member (10) to a total surface area of ​​the sound-proofing member (60) is 2.5% or less.

2. The heat source unit according to claim 1 , further comprising a first sound absorbing material (111) provided on an inner surface of the sound insulation member (60).

3. The heat source unit according to claim 1 or 2, further comprising a second sound absorbing material (112) provided between an outer surface of the sound insulation member (60) and an inner surface of the casing (70).

4. a first vibration isolating member (41) for supporting the compressor (30); a first support member (51) that supports the first vibration isolating member (41); a second vibration isolating member (42) supporting the first support member (51); The heat source unit according to claim 1 or 2, further comprising: a second support member (52) that supports the second vibration isolation member (42).

5. The heat source unit according to claim 1 or 2, wherein the connection member (10) includes a pipe (8) or a wiring (9) connected to the device (80).

6. The equipment (80) includes a water heat exchanger (15), The heat source unit according to claim 5 , wherein the piping (8) connected to the water heat exchanger (15) is passed through the hole (62).

7. The sound-proof member (60) includes a first part (P1) and a second part (P2) that are separated from each other, 3. The heat source unit according to claim 1 or 2, wherein the hole (62) is formed by a notch (100) provided in either or both of a first end (P1a) of the first part (P1) and a second end (P2a) of the second part (P2).

8. The heat source unit according to claim 7 , wherein the first end (P1a) and the second end (P2a) overlap each other.

9. a protective member (67) for protecting the connection member (10) from an edge of the hole (62); 3. The heat source unit according to claim 1, wherein an opening ratio (E) of a cross-sectional area of ​​the hole (62) excluding portions blocked by the connecting member (10) and the protective member (67) relative to a total surface area of ​​the sound-proofing member (60) is 2.5% or less.

10. A refrigeration cycle apparatus comprising the heat source unit (20) according to claim 1 or 2.

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