Heat source unit and refrigeration cycle device

Abstract

To provide a soundproof structure that can be easily assembled at the time of installation and detached at the time of maintenance, in a heat source unit comprising a compressor.SOLUTION: A heat source unit (20) comprises a machine chamber (S1) in which at least a compressor (30) is arranged. A sound insulating member (60) is fixed to at least a portion of plate materials (27b, 27c, and 28) partitioning the machine chamber (S1), and a space (61) is provided between the plate materials (27b, 27c, and 28) and the sound insulating member (60).SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] In a heat pump air conditioner, the compressor housed inside the outdoor unit is a noise source. Patent Document 1 discloses a heat pump air conditioner in which the compressor is covered with a soundproof box. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-241197 A Summary of the Invention [Problem to be solved by the invention]

[0004] Because multiple pipes and wiring are connected to the compressor, the conventional configuration in which the compressor is covered by a soundproof box had the problem that it required labor-intensive work to assemble the soundproof box during installation and to remove the soundproof box during maintenance.

[0005] An object of the present disclosure is to provide a soundproof structure for a heat source unit having a compressor, which can be easily assembled at the time of installation and easily removed during maintenance. [Means for solving the problem]

[0006] A first aspect of the present disclosure is a heat source unit (20) having a machine room (S1) in which at least a compressor (30) is disposed. A sound insulation member (60) is fixed to at least a part of a plate member (27b, 27c, 28) that defines the machine room (S1). A space (61) is provided between the plate member (27b, 27c, 28) and the sound insulation member (60).

[0007] In the first aspect, the sound-proofing member (60) is fixed to the plates (27b, 27c, 28) defining the machine room (S1), and therefore assembly at the time of installation and removal at the time of maintenance can be easily performed. In addition, the compressor (30) is doubly covered by the plates (27b, 27c, 28) and the sound-proofing member (60), which improves the sound-proofing performance against noise from the compressor (30).

[0008] A second aspect of the present disclosure is related to the first aspect, in which the plate material (27b, 27c, 28) includes a plurality of plate-shaped portions (27b, 27c, 28) configured to be able to be combined, and the sound-proofing member (60) is fixed to at least one of the plurality of plate-shaped portions (27b, 27c, 28).

[0009] In the second aspect, the sound insulation member (60) can be assembled and removed more easily together with the plurality of plate-like portions (27b, 27c, 28), so that the number of steps required for installation and maintenance can be significantly reduced.

[0010] A third aspect of the present disclosure is the first or second aspect, in which the sound insulation member (60) is fixed to the plate members (27b, 27c, 28) via a first vibration isolation member (63).

[0011] In the third aspect, it is possible to attenuate vibrations propagating from the plates (27b, 27c, 28) defining the machine room (S1) to the sound-proofing member (60), thereby suppressing noise generated by the vibration of the sound-proofing member (60) itself.

[0012] A fourth aspect of the present disclosure is based on any one of the first to third aspects, and further includes a first sound absorbing material (71) provided in the space (61).

[0013] In the fourth aspect, the first sound-absorbing material (71) is disposed between the boards (27b, 27c, 28) that divide the machine room (S1) and the sound-insulating member (60). This makes it possible to suppress the reduction in transmission loss due to the low-frequency resonance transmission phenomenon, as compared to a case in which the first sound-absorbing material (71) is not provided in the space (61).

[0014] A fifth aspect of the present disclosure is any one of the first to fourth aspects, further comprising a second vibration-isolating member (41) that supports the compressor (30), a first support member (32) that supports the second vibration-isolating member (41), a third vibration-isolating member (42) that supports the first support member (32), and a second support member (27a) that supports the third vibration-isolating member (42).

[0015] In the fifth aspect, the compressor (30) is supported by a double vibration-proof structure, so that the vibration of the compressor (30) can be prevented from being transmitted to the bottom of the machine room (S1).

[0016] A sixth aspect of the present disclosure is related to any one of the first to fifth aspects, wherein the sound-proofing member (60) is fixed to the plate members (27b, 27c, 28) on the inner side of the machine room (S1).

[0017] In the sixth aspect, the heat source unit (20) can be made smaller in size than in the case where the sound insulation member (60) is fixed to the plate members (27b, 27c, 28) on the outer side of the machine room (S1).

[0018] A seventh aspect of the present disclosure is the sixth aspect, wherein, inside the machine room (S1), the sound-proofing member (60) covers the compressor (30) so as to define an accommodation space (5) that accommodates the compressor (30).

[0019] In the seventh aspect, the sound insulation member (60) covers the compressor (30) so as to define the accommodation space (5) for the compressor (30), thereby further improving the sound insulation performance against noise from the compressor (30).

[0020] An eighth aspect of the present disclosure is the sixth or seventh aspect, in which a second sound absorbing material (72) is provided on the sound insulating member (60) opposite to the plate material (27b, 27c, 28).

[0021] In the eighth aspect, the second sound-absorbing material (72) is disposed between the sound-insulating member (60) and the compressor (30), and therefore the sound pressure level of the sound emitted by the compressor (30) can be attenuated. This makes it possible to prevent the sound reflected by the sound-insulating member (60) from building up and causing an increase in noise.

[0022] A ninth aspect of the present disclosure is related to any one of the first to fifth aspects, wherein the sound-proofing member (60) is fixed to the plate members (27b, 27c) on the outside of the machine room (S1).

[0023] In the ninth aspect, a larger space can be secured for the machine room (S1) as compared with the case in which the sound insulation member (60) is fixed to the plate members (27b, 27c) on the inner side of the machine room (S1).

[0024] A tenth aspect of the present disclosure is the ninth aspect, further comprising a second sound absorbing material (72) provided on the plate material (27b, 27c) on an inner side of the machine room (S1).

[0025] In the tenth aspect, the second sound-absorbing material (72) is disposed between the plate members (27b, 27c) and the compressor (30), thereby making it possible to attenuate the sound pressure level of the sound generated by the compressor (30). This makes it possible to prevent the sound reflected by the plate members (27b, 27c) from building up and becoming louder.

[0026] An eleventh aspect of the present disclosure is a refrigeration cycle apparatus including a heat source unit (20) according to any one of the first to tenth aspects, and a refrigerant circuit (2) to which the heat source unit (20) is connected.

[0027] In the eleventh aspect, a soundproof structure for the compressor (30) can be applied that allows easy assembly at the time of installation and easy removal for maintenance. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a refrigerant circuit diagram of a refrigeration cycle device of the first embodiment. [Diagram 2]FIG. 2 is a front view showing the configuration of the outdoor unit of the first embodiment. [Diagram 3] FIG. 3 is a cross-sectional view showing a state in which a sound-proofing member is fixed to a plate material that divides a machine room in the outdoor unit of the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing a state in which a sound-proofing member is fixed to a plate material that partitions a machine room in an outdoor unit of a first modified example of the first embodiment. [Diagram 5] FIG. 5 is a front view showing the configuration of the outdoor unit of the second modified example of the first embodiment. [Figure 6] FIG. 6 is a cross-sectional view showing a state in which a sound-proofing member is fixed to a plate material that partitions a machine room in an outdoor unit of a second modified example of the first embodiment. [Figure 7] FIG. 7 is a front view showing the configuration of the outdoor unit of the third modified example of the first embodiment. [Figure 8] FIG. 8 is a cross-sectional view showing a state in which a sound-proofing member is fixed to a plate material that partitions a machine room in an outdoor unit of a third modification of the first embodiment. [Figure 9] FIG. 9 is a front view showing the configuration of the outdoor unit of the fourth modified example of the first embodiment. [Figure 10] FIG. 10 is a top view of an example of a sound-proofing member provided in the outdoor unit of the second embodiment. [Figure 11] FIG. 11 is a cross-sectional view showing a state in which sound-proofing members are fixed to plates that partition the machine room in the outdoor unit of the second embodiment. [Figure 12] FIG. 12 is a cross-sectional view showing a state in which sound-proofing members are fixed to plates that partition the machine room in an outdoor unit of a modified example of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the following embodiments are essentially preferred examples and are not intended to limit the scope of the present invention, its applications, or its uses. In addition, in the drawings, the same reference numerals represent the same components, but the dimensions in the drawings, such as length, width, thickness, and depth, are appropriately changed from the actual scale for clarity and simplification of the drawings, and may not correspond to the actual relative dimensions.

[0030] (Embodiment 1) <Refrigeration cycle equipment> As shown in Fig. 1, the refrigeration cycle apparatus (1) includes an air conditioner unit (10) and an outdoor unit (20). The outdoor unit (20) is a heat source unit of the refrigeration cycle apparatus (1). The outdoor unit (20) is connected to a refrigerant circuit (2). The refrigerant circuit (2) is filled with, for example, a flammable natural refrigerant. The refrigerant circuit (2) performs a refrigeration cycle by circulating the refrigerant.

[0031] <Air conditioning unit> The air conditioner unit (10) includes an air conditioner (11). The air conditioner (11) is connected to a fluid circuit (12). A temperature control fluid flows through the fluid circuit (12). The temperature control fluid is, for example, water. The air conditioner (11) is installed in an indoor space to be air-conditioned.

[0032] The fluid circuit (12) is formed by connecting the air conditioner (11), a fluid pump (16), and a water heat exchanger (15) through fluid piping (17). The fluid pump (16) circulates water in the fluid circuit (12).

[0033] <Outdoor unit> The outdoor unit (20) includes 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). A refrigerant flows through the piping (26).

[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 air blown by the outdoor fan (22). The outdoor expansion valve (23) is, for example, an electronic expansion valve.

[0035] The compressor (30) is a rotary compressor such as a scroll compressor. A four-way switching valve (24) is connected to a pipe (26) on the discharge side of the compressor (30). An accumulator (25) is connected to a pipe (26) on the suction side of the compressor (30).

[0036] The water heat exchanger (15) is connected to a pipe (26) of the refrigerant circuit (2). The water heat exchanger (15) exchanges heat between the refrigerant flowing through the pipe (26) and the water flowing through a fluid pipe (17).

[0037] 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) is in a state in which the first port (P1) communicates with the third port (P3) and the second port (P2) communicates with the fourth port (P4) (the state shown by the solid lines in FIG. 1).

[0038] The air conditioner (11) is a heat exchanger that functions as a radiator for a temperature control fluid circulating through the fluid circuit (12). The air conditioner (11) is an example of a temperature control target. Specifically, the air conditioner (11) is a radiator, a floor heating and cooling panel, or the like. For example, when the air conditioner (11) is a radiator, the air conditioner (11) is provided near a wall or the like inside a room. For example, when the air conditioner (11) is a floor heating and cooling panel, the air conditioner (11) is provided under the floor or the like inside the room.

[0039] <Internal structure of outdoor unit> As shown in FIG. 2, the outdoor unit (20) has a main casing (27). The main casing (27) is made of a sound-insulating material, such as a metal plate. The main casing (27) includes a bottom plate (27a), a side plate (27b), and a top plate (27c) that can be assembled into, for example, a box shape. A partition member (28) is disposed upright inside the main casing (27). The partition member (28) is made of, for example, a metal plate. The partition member (28) divides the interior of the main casing (27) into a machine chamber (S1) and a blower chamber (S2). That is, the machine chamber (S1) and the blower chamber (S2) are defined by combining the bottom plate (27a), the side plate (27b), and the top plate (27c) that constitute the main casing (27) with the partition member (28).

[0040] The machine room (S1) is a space inside the main casing (27) and located to the right of the partition member (28) in Fig. 2. The machine room (S1) accommodates a compressor (30), a water heat exchanger (15), a four-way switching valve (24), an accumulator (25), and pipes (26).

[0041] The compressor (30) has support legs (31). The support legs (31) 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 (27a) of the main casing (27).

[0042] The accumulator (25) is supported by a stay (not shown) at a position spaced apart from the bottom plate (27a) of the main casing (27).

[0043] The fan chamber (S2) is a space inside the main casing (27) and located to the left of the partition member (28) in Fig. 2. The outdoor fan (22) and the outdoor heat exchanger (21) are disposed in the fan chamber (S2).

[0044] <Compressor soundproofing structure> In this embodiment, in order to improve the sound insulation performance against noise from the compressor (30), as shown in Fig. 2, sound insulation members (60) are fixed to the side plate (27b) and the top plate (27c) of the main casing (27) which define the machine room (S1) and to the partition member (28). The sound insulation members (60) are provided such that spaces (61) are provided between the side plate (27b), the top plate (27c) and the partition member (28). The sound insulation members (60) are made of a non-breathable member, for example, a metal plate or a rubber sheet. The sound insulation members (60) may have through holes, for example, holes for the pipes (26).

[0045] The sound insulation member (60) may cover the compressor (30) so as to define an accommodation space (5) that accommodates the compressor (30). Specifically, the sound insulation member (60) may be provided on each of the side plate (27b) and the top plate (27c) of the main casing (27) that define the machine room (S1) and the partition member (28), so that the compressor (30) is surrounded by a double sound insulation wall structure except for the bottom surface. In this case, other components of the refrigerant circuit (2), such as the accumulator (25), may also be disposed in the accommodation space (5) defined by the sound insulation member (60). This makes it possible to suppress leakage of the passing sound of the refrigerant flowing through the refrigerant circuit (2) to the outside.

[0046] Also, depending on the directionality of the noise generated by the compressor (30), the sound insulation member (60) may be selectively provided on the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28). For example, since the side plate (27b) and the top plate (27c) of the main casing (27) face the outside, it is more effective to provide the sound insulation member (60) thereon than on the partition member (28) facing the blower chamber (S2). Therefore, the sound insulation member (60) may not be provided on the partition member (28) and may be provided only on the side plate (27b) and the top plate (27c) of the main casing (27). Also, the sound insulation member (60) does not need to be provided in the location where the pipes (26) and the like are arranged.

[0047] <Fixing soundproofing materials> The method of fixing the sound-proof member (60) to the side plates (27b) and the top plate (27c) of the main casing (27) and the partition member (28) is not particularly limited. For example, as shown in FIG. 3, bolts may be used as fixing members (62), or the sound-proof member (60) may be fixed by welding, caulking, rivets, or the like.

[0048] 3 shows variations in the manner in which the sound insulation member (60) is fixed to the side plate (27b) of the main casing (27). As shown in (a) and (b) of FIG. 3, an end of the sound insulation member (60) may be bent and fixed to the side plate (27b) of the main casing (27) with a fixing member (62) to provide a space (61) between the side plate (27b) of the main casing (27) and the sound insulation member (60). Alternatively, as shown in (c) and (d) of FIG. 3, an end of the side plate (27b) of the main casing (27) may be bent and the sound insulation member (60) may be fixed to the end with a fixing member (62) to provide a space (61) between the side plate (27b) of the main casing (27) and the sound insulation member (60).

[0049] In addition, while FIG. 3 shows, as an example, an embodiment in which the sound-proofing member (60) is fixed to the side plate (27b) of the main casing (27), the sound-proofing member (60) is fixed to the top plate (27c) of the main casing (27) and the partition member (28) in the same manner.

[0050] <Variation 1> The first modification example differs from the first embodiment in that, as shown in Fig. 4, a sound insulation member (60) is fixed to the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) via a first vibration-proof member (63). The first vibration-proof member (63) is made of, for example, rubber, urethane, or the like. In Fig. 4, the same components as those in the first embodiment shown in Fig. 3 are denoted by the same reference numerals. In Fig. 4, an example is shown in which the sound insulation member (60) is fixed to the side plate (27b) of the main casing (27), but the sound insulation member (60) is fixed to the top plate (27c) of the main casing (27) and the partition member (28) in the same manner.

[0051] <Variation 2> The second modification is different from the first embodiment in that, as shown in Figs. 5 and 6, a first sound absorbing material (71) is provided in a space (61) between the sound insulating member (60) and each of the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28). The first sound absorbing material (71) is made of, for example, felt, glass wool, urethane, or the like. When a foamed sound absorbing material such as urethane foam is used as the first sound absorbing material (71), the space (61) is configured to be sealed. In Figs. 5 and 6, the same components as those in the first embodiment shown in Figs. 2 and 3 are denoted by the same reference numerals. In Fig. 6, the sound insulating member (60) is fixed to the side plate (27b) of the main casing (27) as an example, but the sound insulating member (60) is fixed to the top plate (27c) of the main casing (27) and the partition member (28) in the same manner.

[0052] In the second modification, similarly to the first modification, the sound insulating member (60) may be fixed to the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) via a first vibration isolating member (63).

[0053] <Variation 3> The third modification is different from the second modification in that, as shown in Fig. 7 and Fig. 8, a second sound absorbing material (72) is provided on the side of the sound insulating member (60) opposite to the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28), in other words, on the side of the sound insulating member (60) facing the compressor (30). The second sound absorbing material (72) is made of, for example, felt, glass wool, urethane, or the like. Note that in Figs. 7 and 8, the same components as those in the second modification shown in Figs. 5 and 6 are denoted by the same reference numerals. Also, Fig. 8 shows, as an example, an aspect in which the sound insulating member (60) is fixed to the side plate (27b) of the main casing (27), but the sound insulating member (60) is fixed to the top plate (27c) of the main casing (27) and the partition member (28) in the same manner.

[0054] In the third modification, similarly to the first modification, the sound insulating member (60) may be fixed to the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) via a first vibration isolating member (63).

[0055] In the third modification, the first sound absorbing material (71) of the second modification does not have to be provided.

[0056] <Variation 4> The fourth modification example differs from the third modification example in that the compressor (30) is supported by a double vibration-proof structure, as shown in Fig. 9. In Fig. 9, the same components as those in the third modification example shown in Fig. 7 are denoted by the same reference numerals.

[0057] Specifically, as shown in FIG. 9, the compressor (30) has a support leg (31). The support leg (31) is supported by a plurality of second vibration-isolating members (41). The second vibration-isolating members (41) are made of, for example, rubber or urethane. The second vibration-isolating members (41) are supported by a first support member (32). The first support member (32) is supported by a plurality of third vibration-isolating members (42). The third vibration-isolating members (42) are made of, for example, rubber or urethane. The material and spring constant of the second vibration-isolating members (41) and the material and spring constant of the third vibration-isolating members (42) may be the same as or different from each other. The third vibration-isolating members (42) are supported by a bottom plate (27a) of the main casing (27). That is, in the example shown in FIG. 9, the bottom plate (27a) of the main casing (27) is the second support member.

[0058] In the fourth modification, even if the compressor (30) vibrates during operation of the refrigeration cycle apparatus (1), the vibration is damped by the second vibration-proof member (41) and the third vibration-proof member (42) before being transmitted to the bottom plate (27a) of the main casing (27). Here, if the total weight of the structure supported by the second vibration-proof member (41) and the third vibration-proof member (42) increases, the vibration damping effect is improved. Therefore, for example, as shown in Fig. 9, other components of the refrigerant circuit (2), such as a water heat exchanger (15), may be disposed on the first support member (32).

[0059] In the fourth modification, similarly to the first modification, the sound insulating member (60) may be fixed to the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) via a first vibration isolating member (63).

[0060] In the fourth modification, the first sound absorbing material (71) of the second modification and / or the second sound absorbing material (72) of the third modification may not be provided.

[0061] <Features of the first embodiment (including modifications)> The outdoor unit (20) which is a heat source unit of the present disclosure has a machine room (S1) in which at least a compressor (30) is disposed. Inside the machine room (S1), a sound-proofing member (60) is fixed to at least a part of the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) which define the machine room (S1). Spaces (61) are provided between the sound-proofing member (60) and each of the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28).

[0062] In the outdoor unit (20), the sound insulation member (60) is fixed to the plates (27b, 27c, 28) that divide the machine room (S1), and therefore assembly during installation and removal during maintenance can be easily performed, thereby reducing the number of steps required for installation and maintenance. In addition, the compressor (30) is doubly covered by the side plates (27b) and top plate (27c) and the partition member (28) of the main casing (27) and the sound insulation member (60), improving the sound insulation performance against noise from the compressor (30). In more detail, the sound insulation performance of the metal plate, hard rubber, etc. that constitutes the sound insulation member (60) generally improves with an increase in mass, but for the same mass, the sound insulation performance is improved by using two sheets of sound insulation material compared to the case of using one sheet of sound insulation material.

[0063] In the outdoor unit (20), the distance between the sound-proofing member (60) and each of the side plates (27b) and the top plate (27c) of the main casing (27) defining the machine room (S1) and the partition member (28), i.e., the length of the space (61), may be set to 5 mm or more and 210 mm or less, preferably 5 mm or more and 50 mm or less. This makes it possible to enhance the soundproofing effect while suppressing contact between the sound-proofing member (60) and the main casing (27) or the partition member (28) due to vibration.

[0064] In the outdoor unit (20), inside the machine room (S1), the sound-proofing member (60) may cover the compressor (30) so as to define an accommodation space (5) for accommodating the compressor (30). This further improves the sound-proofing performance against noise from the compressor (30).

[0065] In the outdoor unit (20), the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) are configured to be combinable, and the sound-proofing member (60) may be fixed to at least one of the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28). This makes it easier to assemble and remove the sound-proofing member (60) together with the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28), thereby significantly reducing the number of steps required for installation and maintenance.

[0066] In the outdoor unit (20), the sound insulation member (60) may be fixed to the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) via the first vibration isolating members (63). This makes it possible to attenuate vibrations propagating from the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) that define the machine room (S1) to the sound insulation member (60). This makes it possible to suppress noise generated by the vibration of the sound insulation member (60) itself.

[0067] In the outdoor unit (20), a first sound-absorbing material (71) may be provided in a space (61) between the sound-insulating member (60) and each of the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28) of the main casing (27). This makes it possible to suppress the reduction in transmission loss caused by the low-frequency resonance transmission phenomenon, as compared to a case in which the first sound-absorbing material (71) is not provided in the space (61).

[0068] The "low-frequency resonance transmission phenomenon (drum phenomenon)" is a resonance phenomenon in which, when two panels form a double structure with a hollow space between them, such as in double-glazed glass, the two panels become two masses and the air in the hollow space acts as a spring to connect them, causing them to vibrate. This phenomenon generally occurs in the low-frequency range, so it is called the low-frequency resonance transmission phenomenon. When the "low-frequency resonance transmission phenomenon" occurs, the transmission loss becomes lower than the value predicted by the mass law, and the sound insulation performance decreases.

[0069] In the outdoor unit (20), a second sound-absorbing material (72) may be provided on the sound-insulating member (60) on the side opposite to the side plate (27b) and the top plate (27c) of the main casing (27) and the partition member (28), in other words, on the side of the sound-insulating member (60) facing the compressor (30). This makes it possible to attenuate the sound pressure level of the sound emitted by the compressor (30), thereby preventing the sound reflected by the sound-insulating member (60) from building up and causing an increase in noise.

[0070] "Build-up" is a phenomenon in which, when a sound source is enclosed in a box, the sound pressure level around the sound source increases compared to when there is no box due to sound reflection by the box material. When "build-up" occurs, "sound pressure level outside the box" = "sound pressure level without the box" - "transmission loss of the box material" + "build-up", and the amount of sound pressure reduction by the box becomes smaller than the value expected from the transmission loss of the box material.

[0071] The outdoor unit (20) may include a second vibration-isolating member (41) that supports the compressor (30), a first support member (32) that supports the second vibration-isolating member (41), a third vibration-isolating member (42) that supports the first support member (32), and a bottom plate (27a) (second support member) of the main casing (27) that supports the third vibration-isolating member (42). In this way, the compressor (30) is supported by a double vibration-isolating structure, and therefore, the vibration of the compressor (30) can be prevented from propagating to the bottom of the machine room (S1).

[0072] The refrigeration cycle apparatus (1) of the present disclosure includes an outdoor unit (20) and a refrigerant circuit (2) to which the outdoor unit (20) is connected, and therefore can employ a soundproof structure for the compressor (30) that can be easily assembled during installation and easily removed during maintenance.

[0073] (Embodiment 2) In the first embodiment (including the modified example), the sound insulation member (60) is fixed to the inside of the machine room (S1) and to the plates (27b, 27c, 28) that define the machine room (S1).

[0074] In contrast, in the second embodiment, as shown in Fig. 10, the sound-proofing member (60) is fixed to the outer surface of the main casing (27), specifically, to the outside of the machine chamber (S1) of the side plate (27b) and / or the top plate (27c) constituting the main casing (27). Fig. 10 is a top view of an example of a sound-proofing member (60) provided in the outdoor unit (20) of the second embodiment, and the same reference numerals are used to refer to the same components as those in the first embodiment shown in Figs. 2 to 9.

[0075] The second embodiment can provide the same effects as the first embodiment. In the first embodiment, the outdoor unit (20) can be made smaller than in the second embodiment, while in the second embodiment, a larger space can be secured for the machine room (S1) than in the first embodiment.

[0076] In the second embodiment, as shown in Fig. 10, the sound-proofing member (60) may be installed later on the outdoor unit (20). Alternatively, the side plate (27b) and / or the top plate (27c) that form the main casing (27) may be integrally formed with the sound-proofing member (60) in advance, and then the main casing (27) may be assembled.

[0077] The method for fixing the sound-proof member (60) to the main casing (27) is not particularly limited. For example, as shown in FIG. 11, a bolt may be used as the fixing member (62), or the sound-proof member (60) may be fixed by welding, caulking, rivets, or the like.

[0078] Fig. 11 shows variations in the manner in which the sound insulation member (60) is fixed to the side plate (27b) of the main casing (27). As shown in Fig. 11(a) and (b), an end of the side plate (27b) may be bent and the sound insulation member (60) may be fixed to the end with a fixing member (62) to provide a space (61) between the side plate (27b) and the sound insulation member (60). Alternatively, as shown in Fig. 11(c) and (d), an end of the sound insulation member (60) may be bent and fixed to the side plate (27b) with a fixing member (62) to provide a space (61) between the side plate (27b) and the sound insulation member (60).

[0079] Although FIG. 11 illustrates an example in which the sound insulation member (60) is fixed to the side plate (27b) of the main casing (27), the sound insulation member (60) is fixed to the top plate (27c) of the main casing (27) in the same manner.

[0080] In the second embodiment, similarly to the first modification of the first embodiment, the sound insulating member (60) may be fixed to the side plate (27b) and / or the top plate (27c) of the main casing (27) via a first vibration isolating member (63).

[0081] In the second embodiment, as in the second modification of the first embodiment, a first sound-absorbing material (71) may be provided in the space (61) between the side plate (27b) and / or the top plate (27c) of the main casing (27) and the sound-insulating member (60).

[0082] In the second embodiment, as shown in Fig. 12, a second sound absorbing material (72) may be provided on the side plate (27b) and / or the top plate (27c) of the main casing (27) inside the machine room (S1), in other words, on the side plate (27b) and / or the top plate (27c) facing the compressor (30). The second sound absorbing material (72) is made of, for example, felt, glass wool, urethane, or the like. Note that in Fig. 12, the same components as those in Fig. 11 are denoted by the same reference numerals. Also, Fig. 12 illustrates an example in which the second sound absorbing material (72) is provided on the side plate (27b) of the main casing (27), but the second sound absorbing material (72) can be provided on the top plate (27c) of the main casing (27) in the same manner.

[0083] By providing the second sound-absorbing material (72), the sound pressure level of the sound generated by the compressor (30) can be attenuated, thereby preventing the sound reflected by the side plate (27b) and / or the top plate (27c) from building up and causing an increase in noise.

[0084] Although FIG. 12 illustrates an example in which the first sound absorbing material (71) is provided together with the second sound absorbing material (72), it is not necessary to provide either the first sound absorbing material (71) or the second sound absorbing material (72).

[0085] In the second embodiment, similarly to the fourth modification of the first embodiment, the compressor (30) may be supported by a double vibration-proof structure.

[0086] In the first and second embodiments, the side plate (27b) and / or the top plate (27c) of the main casing (27) may be made of the same material as the sound-proofing member (60), thereby forming a casing with a double-wall structure.

[0087] (Other embodiments) In the above embodiment (including the modified example, the same applies below), the refrigeration cycle device has been described as a device having a refrigerant circuit and a fluid circuit, but is not limited to this embodiment. For example, the refrigeration cycle device may be an air conditioner having a single refrigerant circuit.

[0088] In addition, air conditioning equipment such as radiators and floor heating and cooling panels have been given as examples of objects to be temperature-adjusted by the outdoor unit, which is a heat source unit, but this is not limited to these, and for example, water heated in a water heat exchanger may be supplied to a hot water tank, a bath, a shower, etc.

[0089] Furthermore, the heat source unit of the refrigeration cycle device may not have a water heat exchanger, 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 the storage. The cooling unit may cool the interior of a shipping container for sea or land use.

[0090] In addition, the heat source unit does not necessarily have to be installed outdoors, but may be installed indoors. In this case, the heat source side heat exchanger is not an outdoor heat exchanger, but is configured as a heat exchanger that exchanges heat between a heat medium such as water and a refrigerant.

[0091] Although the embodiments have been described above, it will be understood that various modifications of form and details are possible without departing from the spirit and scope of the claims. Furthermore, the above embodiments and modifications may be combined or substituted as appropriate. Furthermore, 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 the words. [Industrial Applicability]

[0092] INDUSTRIAL APPLICABILITY As described above, the present disclosure is useful for a heat source unit and a refrigeration cycle apparatus. [Explanation of symbols]

[0093] 1 Refrigeration cycle equipment 5. Containment Space 20 Outdoor unit (heat source unit) 27a: Bottom plate of main casing (second support member) 27b Main casing side plate (plate material) 27c Top plate of main casing (plate material) 28 Partition material (plate material) 30 Compressor 32 Support member (first support member) 41 Vibration-isolating member (second vibration-isolating member) 42 Vibration-isolating member (third vibration-isolating member) 60 Soundproofing materials 61 Space 63 Vibration-isolating member (first vibration-isolating member) 71 First sound absorbing material 72 Second sound absorbing material S1 Machine room

Claims

1. A heat source unit (20) having at least a machine room (S1) in which a compressor (30) is disposed, a sound-proofing member (60) is fixed to at least a part of the plate members (27b, 27c, 28) defining the machine room (S1); A space (61) is provided between the plate members (27b, 27c, 28) and the sound insulation member (60). Heat source unit.

2. In the heat source unit of claim 1, The plate material (27b, 27c, 28) includes a plurality of plate-shaped portions (27b, 27c, 28) configured to be combinable with each other, The sound-proof member (60) is fixed to at least one of the plurality of plate-like portions (27b, 27c, 28). Heat source unit.

3. In the heat source unit of claim 1, The sound insulation member (60) is fixed to the plate members (27b, 27c, 28) via a first vibration isolating member (63). Heat source unit.

4. In the heat source unit of claim 1, A first sound absorbing material (71) is provided in the space (61). Heat source unit.

5. In the heat source unit of claim 1, a second vibration isolating member (41) supporting the compressor (30); a first support member (32) that supports the second vibration isolating member (41); a third vibration isolating member (42) supporting the first support member (32); a second support member (27a) supporting the third vibration isolating member (42); Equipped Heat source unit.

6. In the heat source unit of claim 1, The sound-proof member (60) is fixed to the plate material (27b, 27c, 28) on the inner side of the machine room (S1). Heat source unit.

7. The heat source unit according to claim 6, In the machine room (S1), the soundproofing member (60) covers the compressor (30) so as to define an accommodation space (5) in which the compressor (30) is accommodated. Heat source unit.

8. The heat source unit according to claim 6, A second sound absorbing material (72) is provided on the sound insulating member (60) on the opposite side to the plate material (27b, 27c, 28). Heat source unit.

9. In the heat source unit of claim 1, The sound-proof member (60) is fixed to the plate material (27b, 27c) on the outer side of the machine room (S1). Heat source unit.

10. In the heat source unit of claim 9, A second sound absorbing material (72) is provided on the plate material (27b, 27c) on the inner side of the machine room (S1). Heat source unit.

11. A heat source unit (20) according to any one of claims 1 to 10; a refrigerant circuit (2) to which the heat source unit (20) is connected; Equipped Refrigeration cycle equipment.

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