Heat source device

Abstract

This reduces the impact when the compressor collides with the cylinder during casing descent. [Solution] The heat source device (1) comprises a cylinder (71) that stores flammable refrigerant for filling a refrigerant circuit (11) and has an outlet (71a) at its bottom for discharging the flammable refrigerant, a casing (21) having a compressor (12) and a bottom plate (23) on which the cylinder is installed, and a restricting part (80) that restricts the direction in which the compressor is displaced when the heat source device falls. The first straight line (L1) is defined as a straight line passing through the center of gravity (C1) of the compressor and the center of gravity (C2) of the cylinder in a top view of the bottom plate when the heat source device is installed. The restricting part restricts the displacement of the compressor toward the cylinder in a direction away from the first straight line, provided that the first straight line coincides with the direction of gravity.

Description

Technical Field

[0001] The present disclosure relates to a heat source device.

Background Art

[0002] Patent Document 1 discloses a heat source device including a compressor connected to a refrigerant circuit. The compressor is installed on the bottom plate inside the casing of the heat source device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] [[ID=3,4]] The inventors of the present application have created a configuration in which a cylinder is provided inside the casing of the heat source device. The cylinder stores a refrigerant for filling the refrigerant circuit. As a result, when installing the heat source device, the refrigerant can be filled into the refrigerant circuit from the cylinder, eliminating the need to separately prepare the refrigerant for filling. On the other hand, in a configuration where a flammable refrigerant is used and a cylinder is provided inside the casing, the following specific problems occur.

[0005] During transportation before installing the heat source device at the site, there is a risk that the heat source device may fall. Here, a compressor and a cylinder are provided inside the casing. When the heat source device falls to the ground, the compressor and the cylinder may be in a state where they are aligned in the direction of gravity and the heat source device contacts the ground. In this case, if the compressor collides with the cylinder due to the impact of the fall, the cylinder may be damaged and the refrigerant may leak into the air.

[0006] An object of the present disclosure is to reduce the impact when the compressor collides with the cylinder when the heat source device falls.

Means for Solving the Problems

[0007] A first aspect of this disclosure relates to a heat source device (1). The heat source device (1) includes a compressor (12) included in a refrigerant circuit (11) that performs a refrigeration cycle, a cylinder (71) that stores a flammable refrigerant for filling the refrigerant circuit (11) and has an outlet (71a) at its lower end for discharging the flammable refrigerant, a casing (21) having a bottom plate (23) on which the compressor (12) and the cylinder (71) are installed, and a restricting part (80) that restricts the direction in which the compressor (12) is displaced when the heat source device (1) is dropped. The first straight line (L1) is defined as a straight line passing through the center of gravity (C1) of the compressor (23) and the center of gravity (C2) of the cylinder (71) in a top view of the bottom plate (23) from above when the heat source device (1) is installed. The restricting section (80) restricts the displacement of the compressor (23) toward the cylinder (71) in a direction that deviates from the first straight line (L1), provided that the first straight line (L1) coincides with the direction of gravity.

[0008] In the first embodiment, the restricting part (80) restricts the displacement of the compressor (12) toward the cylinder (71) when the device falls under the condition that the first straight line (L1) coincides with the direction of gravity, so that it deviates from the first straight line (L1). The first straight line (L1) is a straight line that passes through the center of gravity (C1) of the compressor (12) and the center of gravity (C2) of the cylinder (71) in a top view of the bottom plate (23) when the heat source device (1) is installed. Therefore, when the heat source device (1) falls, if the first straight line (L1) coincides with the direction of gravity, the direction in which the compressor (12) is displaced due to the impact of the fall deviates from the direction toward the cylinder (71) along the first straight line (L1). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0009] A second aspect of the present disclosure is a heat source device (1) of the first aspect, wherein the regulating portion (80) comprises a plate member (81) consisting of an intermediate plate (53) installed on the bottom plate (23) or the bottom plate (23), and a plurality of legs (12b) fixed to the plate member (81) and supporting the compressor (12) from below. In the top view, the plurality of legs (12b) are arranged asymmetrically with respect to the first straight line (L1).

[0010] In the second embodiment, the multiple legs (12b) supporting the compressor (12) are arranged asymmetrically with respect to the first straight line (L1). This arrangement ensures that when the heat source device (1) falls, if the first straight line (L1) coincides with the direction of gravity, the load applied from the legs (12b) of the compressor (12) to the plate member (81) due to the impact of the fall becomes unbalanced in the regions on both sides of the first straight line (L1), causing the degree of deformation of the plate member (81) to differ in the regions on both sides of the first straight line (L1). This allows the direction in which the compressor (12) is displaced by the impact of the fall to be shifted away from the direction toward the cylinder (71) along the first straight line (L1).

[0011] A third aspect of the present disclosure is a heat source device (1) of the second aspect, wherein, in the top view, the number of legs (12b) is different in one region of the plate member (81) and the other region of the plate member (81) separated by the first straight line (L1).

[0012] In the third embodiment, the multiple legs (12b) supporting the compressor (12) differ from each other in the region on one side of the plate member (81) and the region on the other side of the first straight line (L1). This means that when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, the load applied from the compressor (12) to the plate member (81) through the legs (12b) is greater in the region with a larger number of legs (12b) on the first straight line (L1). This is advantageous for suitably differentiating the degree of deformation of the plate member (81) in the regions on both sides of the first straight line (L1), and for shifting the direction in which the compressor (12) is displaced by the impact of the fall away from the direction toward the cylinder (71) along the first straight line (L1).

[0013] A fourth aspect of the present disclosure is a heat source device (1) in any one of the first to third aspects, wherein the regulating portion (80) is configured to include a plate member (81) that supports the compressor (12) from below. The second straight line (L2) is defined as a straight line perpendicular to the first straight line (L1) and passing through the center of gravity (C1) of the compressor (12). The plate member (81) is an intermediate plate (53) installed on the bottom plate (23) or the bottom plate (23), and in the top view, has a first region (A1) and a second region (A2) that are demarcated by the first straight line (L1) on the cylinder (71) side of the second straight line (L2). The first region (A1) is provided with a rib (53a) extending in a direction intersecting the second straight line (L2).

[0014] In the fourth embodiment, a rib (81a) is provided in the first region (A1) of the plate member (81). The rib (81a) extends in a direction intersecting the second straight line (L2). The rib (81a) increases the buckling strength of the plate member (81) in the direction along the first straight line (L1) in the first region (A1) compared to the second region (A2). As a result, when the heat source device (1) falls and the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the plate member (81) buckles before the first region (A1) when a load from the compressor (12) is applied to the plate member (81). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall away from the direction toward the cylinder (71) along the first straight line (L1).

[0015] A fifth aspect of the present disclosure is a heat source device (1) in any one of the first to fourth aspects, wherein the regulating portion (80) is configured to include a plate member (81) that supports the compressor (12) from below. The second straight line (L2) is defined as a straight line that is perpendicular to the first straight line (L1) and passes through the centroid (C1) of the compressor (12). The plate member (81) is an intermediate plate (53) installed on the bottom plate (23) or the bottom plate (23), and in the top view, has a first region (A1) and a second region (A2) that are separated by the first straight line (L1) on the cylinder (71) side of the second straight line (L2). The thickness of the plate member (81) is greater in the first region (A1) than in the second region (A2).

[0016] In the fifth embodiment, the thickness of the plate member (81) is greater in the first region (A1) than in the second region (A2). The buckling strength of the plate member (81) is higher in the thicker parts of the plate member (81). Therefore, the buckling strength of the plate member (81) in the direction along the first straight line (L1) is higher in the first region (A1) than in the second region (A2). As a result, when the heat source device (1) is dropped, if the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the plate member (81) buckles before the first region (A1) when the load from the compressor (12) is applied to the plate member (81). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the drop away from the direction toward the cylinder (71) along the first straight line (L1).

[0017] A sixth aspect of the present disclosure is a heat source device (1) in any one of the first to fifth aspects, wherein the regulating portion (80) is configured to include a plate member (81) that supports the compressor (12) from below. The second straight line (L2) is defined as a straight line that is perpendicular to the first straight line (L1) and passes through the centroid (C1) of the compressor (12). The plate member (81) is an intermediate plate (53) installed on the bottom plate (23) or the bottom plate (23), and in the top view, has a first region (A1) and a second region (A2) that are demarcated by the first straight line (L1) on the cylinder (71) side of the second straight line (L2). The Young's modulus of the material making up the plate member (81) is greater in the first region (A1) than in the second region (A2).

[0018] In the sixth embodiment, the Young's modulus of the material making up the plate member (81) is greater in the first region (A1) than in the second region (A2). The buckling strength of the plate member (81) is higher in the part of the plate member (81) where the Young's modulus of the material is greater. Therefore, the buckling strength of the plate member (81) in the direction along the first straight line (L1) is higher in the first region (A1) than in the second region (A2). As a result, when the heat source device (1) is dropped, if the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the plate member (81) buckles before the first region (A1) when the load from the compressor (12) is applied to the plate member (81). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the drop away from the direction toward the cylinder (71) along the first straight line (L1).

[0019] A seventh aspect of the present disclosure is a heat source device (1) in any one of the first to sixth aspects, wherein the regulating portion (80) is configured to include a plate member (81) that supports the compressor (12) from below. The second straight line (L2) is defined as a straight line that is perpendicular to the first straight line (L1) and passes through the center of gravity (C1) of the compressor (12). The plate member (81) is an intermediate plate (53) installed on the bottom plate (23) or the bottom plate (23), and in the top view, has a first region (A1) and a second region (A2) that are partitioned by the first straight line (L1) on the cylinder (71) side of the second straight line (L2). An opening (81d) is formed in the second region (A2) that penetrates the plate member (81).

[0020] In the seventh embodiment, an opening (81d) is formed in the second region (A2) of the plate member (81). This opening (81d) penetrates the plate member (81). The buckling strength of the plate member (81) decreases in the region where the opening (81d) is located. Therefore, the buckling strength of the plate member (81) in the direction along the first straight line (L1) is lower in the second region (A2) than in the first region (A1). As a result, when the heat source device (1) falls, if the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the plate member (81) buckles before the first region (A1) when the load from the compressor (12) is applied to the plate member (81). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall away from the direction toward the cylinder (71) along the first straight line (L1).

[0021] An eighth aspect of the present disclosure is a heat source device (1) in any one of the first to seventh aspects, wherein the regulating portion (80) comprises a support member (82) that supports the compressor (12) with respect to an intermediate plate (53) installed on the bottom plate (23), the bottom plate (23), or the peripheral wall (21a) of the casing (21). The support member (82) is located on the cylinder (71) side of the compressor (12) and extends in a direction intersecting the first straight line (L1) in the top view.

[0022] In the eighth aspect, a support member (82) is provided on the side of the cylinder (71) of the compressor (12). The support member (82) extends in a direction intersecting the first straight line (L1) in a top view, and supports the compressor (12) on an intermediate plate (53) installed on the bottom plate (23), the bottom plate (23), or the peripheral wall (21a) of the casing (21). When the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, the support member (82) is interposed between the peripheral wall (21a) of the intermediate plate (53), the bottom plate (23), or the casing (21) and the compressor (12), so that a force in a direction different from the direction toward the cylinder (71) with respect to the compressor (12) is applied from the support member (82). Thereby, the direction in which the compressor (12) is displaced by the impact of the fall can be shifted from the direction toward the cylinder (71) along the first straight line (L1).

[0023] A ninth aspect of the present disclosure is a heat source device (1) according to any one of the first to eighth aspects, further comprising an intermediate plate (53) that supports the compressor (12) and the cylinder (71) from below, and an elastic support portion (54) that is fixed on the bottom plate (23) and supports the intermediate plate (53) from below.

[0024] In the ninth aspect, an intermediate plate (53) that supports the compressor (12) and the cylinder (71) from below is installed on the bottom plate (23) via an elastic support portion (54). By this, the vibration during the operation of the compressor (12) is suppressed by the elastic support portion (54). Further, when the heat source device (1) falls, a portion between the compressor (12) and the cylinder (71) in the intermediate plate (53) is deformed by the impact of the fall. Therefore, since the kinetic energy of the compressor (12) can be absorbed by the deformation of the intermediate plate (53), even if the compressor (12) hits the cylinder (71), the impact acting on the cylinder (71) from the compressor (12) can be reduced.

[0025] A tenth aspect of the present disclosure is a heat source device (1) according to any one of the first to ninth aspects, further comprising a sound insulation member (60) that surrounds the compressor (12).

[0026] In the tenth aspect, the compressor (12) is surrounded by a sound insulation member (60). When the heat source device (1) falls, the sound insulation member (60) mitigates the impact acting on the cylinder (71).

[0027] A heat source device (1) according to the eleventh aspect of the present disclosure, in any one of the heat source devices (1) according to the first to tenth aspects, further includes a sound absorbing material (90) disposed so as to overlap an outer surface or an inner surface of the casing (21).

[0028] In the eleventh aspect, the sound absorbing material (90) is disposed so as to overlap an outer surface or an inner surface of the casing (21). When the heat source device (1) falls, the sound absorbing material (90) mitigates the impact acting on the cylinder (71).

[0029] [[ID=第十二の態様は、第1~第11の態様のいずれか1つの熱源装置(1)において、前記ケーシング(21)が、前記冷媒回路(11)の全体を収容する、熱源装置(1)である。

[0030] In the twelfth aspect, the entire refrigerant circuit (11) that forms a closed circuit is provided inside the casing (21). Therefore, for example, compared with a separate type refrigeration cycle device, the amount of refrigerant required for the refrigerant circuit (11) is reduced, so that the cylinder (71) can be downsized. As a result, the rigidity of the cylinder (71) can be increased, and breakage of the cylinder (71) can be suppressed.

Brief Description of the Drawings

[0031] [Figure 1] FIG. 1 is a schematic piping system diagram of a refrigerant circuit of a heat source device according to an embodiment. [Figure 2] FIG. 2 is a schematic perspective view of an outdoor unit. [Figure 3] I FIG. 3 is a front view of the outdoor unit with an access port on the front side of the machine room open. [Figure 4] FIG. 4 is a plan view schematically showing the inside of the outdoor unit. [Figure 5] It should be noted that there is an error in the original text for . The correct translation of the relevant part is provided above.Figure 5 is a side view of the inside of the outdoor unit, seen from the right side with the side panel removed. [Figure 6] Figure 6 is a schematic diagram showing the positional relationship of the compressor and cylinder, as well as the regulating section, as viewed from above inside the outdoor unit. [Figure 7] Figure 7 is a schematic diagram showing the positional relationship between the compressor and the cylinder, as well as the displacement direction of the compressor, during a fall under the condition that the first straight line of the comparative example heat source device coincides with the direction of gravity. [Figure 8] Figure 8 is a schematic diagram showing the positional relationship between the compressor and the cylinder, as well as the displacement direction of the compressor, during a fall under the condition that the first straight line of the heat source device of the embodiment coincides with the direction of gravity. [Figure 9] Figure 9 is a diagram corresponding to Figure 6 of the outdoor unit in Modification Example 1. [Figure 10] Figure 10 is a diagram corresponding to Figure 8 of the heat source device in Modification Example 1. [Figure 11] Figure 11 is a diagram corresponding to Figure 6 of the heat source device in Modification Example 2. [Figure 12] Figure 12 is a diagram corresponding to Figure 8 of the heat source device in modified example 2. [Figure 13] Figure 13 is a diagram corresponding to Figure 6 of the heat source device in Modification Example 3. [Figure 14] Figure 14 is a diagram corresponding to Figure 8 of the heat source device in Modification Example 3. [Figure 15] Figure 15 is a diagram corresponding to Figure 6 of the heat source device in Modification 4. [Figure 16] Figure 16 is a diagram corresponding to Figure 8 of the heat source device in Modification 4. [Figure 17] Figure 17 is a diagram corresponding to Figure 6 of the heat source device in Modification Example 5. [Figure 18] Figure 18 is a diagram corresponding to Figure 8 of the heat source device in Modification Example 5. [Figure 19] Figure 19 is a diagram corresponding to Figure 6 of the heat source device in Modification 6. [Figure 20] Figure 20 is a diagram corresponding to Figure 8 of the heat source device in modified example 6. [Figure 21] Figure 21 is a diagram corresponding to Figure 6 of the heat source device in Modification Example 7. [Figure 22] Figure 22 is a diagram corresponding to Figure 8 of the heat source device in Modification Example 7. [Figure 23] Figure 23 is a diagram corresponding to Figure 6 of the heat source device in Modification Example 8. [Figure 24] Figure 24 is a diagram corresponding to Figure 8 of the heat source device in Modification Example 8. [Figure 25] Figure 25 is a diagram corresponding to Figure 6 of the heat source device in modified example 9. [Figure 26] Figure 26 is a diagram corresponding to Figure 8 of the heat source device in modified example 9. [Figure 27] Figure 27 is a diagram corresponding to Figure 6 of the heat source device in modified example 10. [Figure 28] Figure 28 is a diagram corresponding to Figure 8 of the heat source device in modified example 10. [Figure 29] Figure 29 is a diagram corresponding to Figure 6 of the heat source device in modified example 11. [Figure 30] Figure 30 is a diagram corresponding to Figure 8 of the heat source device in modified example 11. [Figure 31] Figure 31 is a diagram corresponding to Figure 6 of the heat source device in modified example 12. [Figure 32] Figure 32 is a diagram corresponding to Figure 8 of the heat source device in modified example 12. [Figure 33] Figure 33 is a diagram corresponding to Figure 4 of a heat source device in another embodiment. [Figure 34] Figure 34 is a diagram corresponding to Figure 6 of a heat source device in another embodiment. [Modes for carrying out the invention]

[0032] The following describes exemplary embodiments in detail with reference to the drawings. The drawings are intended to conceptually illustrate the technology of this disclosure. Therefore, dimensions, ratios, or numbers in the drawings may be exaggerated or simplified to facilitate understanding of the technology of this disclosure.

[0033] (1) Basic configuration of the heat source system The heat source device (1) of this embodiment constitutes a refrigeration cycle device that performs a refrigeration cycle. The refrigeration cycle device is applied to a hot water supply device. The heat source device (1) heats water and supplies the heated water to the target. The heat source device (1) has an outdoor unit (20) installed outside. The outdoor unit (20) has a casing (21).

[0034] The casing (21) houses the entire closed-circuit refrigerant circuit (11). That is, the casing (21) houses the equipment that makes up the refrigerant circuit (11), such as the compressor (12), water heat exchanger (15), and cylinder (71). The refrigerant circuit (11) performs the refrigeration cycle. The refrigerant circuit (11) is filled with refrigerant. The refrigerant in the refrigerant circuit (11) is a flammable refrigerant.

[0035] Specifically, the refrigerant in this embodiment is propane (R290). Propane is a highly flammable natural refrigerant. Natural refrigerants have a zero ozone depletion potential, a low global warming potential, and therefore have a low environmental impact. Propane ignites at temperatures below 500°C. Flammable refrigerants may also be methane (R50), ethane (R170), butane (R600), isobutane (R600a), etc. The natural refrigerant may also be a corrosive refrigerant, such as ammonia (R717).

[0036] (1-1) Refrigerant circuit As shown in Figure 1, the refrigerant circuit (11) has as its main components a compressor (12), an air heat exchanger (13), an expansion valve (14), a water heat exchanger (15), and a cylinder (71). The refrigerant circuit (11) further has a four-way switching valve (16) and an accumulator (17).

[0037] The compressor (12) compresses the refrigerant. A discharge pipe (18) is connected to the discharge side of the compressor (12). A suction pipe (19) is connected to the suction side of the compressor (12). The accumulator (17) collects the liquid in the refrigerant that is drawn into the compressor (12). The air heat exchanger (13) exchanges heat between the refrigerant and the outside air. The expansion valve (14) reduces the pressure of the refrigerant. The water heat exchanger (15) exchanges heat between the refrigerant in the refrigerant circuit (11) and the water in the water circuit (40).

[0038] The four-way diverter valve (16) switches the direction of refrigerant circulation. The four-way diverter valve (16) switches between a first state (shown by the solid line in Figure 1) and a second state (shown by the dashed line in Figure 1). In the first state, the four-way diverter valve (16) connects the first port (16a) and the third port (16c), and also connects the second port (16b) and the fourth port (16d). In the second state, the four-way diverter valve (16) connects the first port (16a) and the second port (16b), and also connects the third port (16c) and the fourth port (16d).

[0039] The cylinder (71) is connected to the refrigerant circuit (11) via a connecting pipe (72). In this embodiment, the connecting pipe (72) is connected to the suction pipe (19). A control valve (73) is provided on the connecting pipe (72). The cylinder (71) is filled with refrigerant before the heat source device (1) is shipped. After transporting the heat source device (1) to the site, the worker depressurizes the refrigerant circuit (11). Then, when the worker opens the control valve (73), the refrigerant from the cylinder (71) fills the refrigerant circuit (11).

[0040] The refrigerant circuit (11) performs a first refrigeration cycle and a second refrigeration cycle. In Figure 1, the refrigerant flow in the first refrigeration cycle is shown by solid arrows, and the refrigerant flow in the second refrigeration cycle is shown by dashed arrows. In the first refrigeration cycle, the four-way switching valve (16) is in the first state, the water heat exchanger (15) functions as a heat radiator (condenser), and the air heat exchanger (13) functions as an evaporator. In the second refrigerant cycle, the four-way switching valve (16) is in the second state, the air heat exchanger (13) functions as a heat radiator (condenser), and the water heat exchanger (15) functions as an evaporator.

[0041] (1-2) Water circuit The water circuit (40) is connected to the water heat exchanger (15). It includes a first water pipe (41) and a second water pipe (42). Water flows through the inside of the first water pipe (41) and the second water pipe (42), respectively. The first water pipe (41) is connected to the upstream side of the water heat exchanger (15) and constitutes a water supply pipe that supplies water to the water heat exchanger (15). The second water pipe (42) is connected to the downstream side of the water heat exchanger (15) and constitutes a hot water outlet pipe that discharges hot water from the water heat exchanger (15).

[0042] A pump (43) is connected to the water circuit (40). The pump (43) transports water from the water circuit (40). The water from the water circuit (40) is supplied to targets such as the hot water tank, air conditioning unit, and floor heating unit. A gas-liquid separator (44) is connected to the water circuit (40). The gas-liquid separator (44) releases refrigerant that has leaked from the refrigerant circuit (11) into the water circuit (40) via the water heat exchanger (15) into the atmosphere.

[0043] (2) Outdoor unit The configuration of the outdoor unit (20) will be explained in detail with reference to Figures 2 to 5. In the following explanation, the terms "up," "down," "right," "left," "front," and "rear" refer to the directions indicated by the arrows in Figure 2. The left-right direction corresponds to the first direction. The front-back direction corresponds to the second direction. The up-down direction corresponds to the third direction. The outdoor unit (20) has a casing (21), equipment for the refrigerant circuit (11), and equipment for the water circuit (40).

[0044] The equipment of the refrigerant circuit (11) includes, in addition to the elements described above, refrigerant piping, solenoid valves, internal heat exchangers, filters, and piping insulation. The equipment of the water circuit (11) includes, as described above, a water heat exchanger (15), and parts of the first water piping (41) and the second water piping (42). The outdoor unit (20) further includes a partition member (45) that divides the inside of the casing (21) and a fan (30) that transports outdoor air.

[0045] (2-1) Casing and partition members The casing (21) is installed outdoors. The casing (21) is formed in the shape of a hollow box. More precisely, the casing (21) is formed in the shape of a box with part of the left side and rear side open. The casing (21) is formed in the shape of a rectangular parallelepiped with the left-right direction being the longitudinal direction and the front-back direction being the short direction. The casing (21) is made of metal plates.

[0046] The casing (21) has a top plate (22), a bottom plate (23), a right plate (24), a left plate (25), a front plate (26), and a rear plate (27). The right plate (24), left plate (25), front plate (26), and rear plate (27) constitute the peripheral wall (21a) of the casing (21). The top plate (22) and the bottom plate (23) face each other. The right plate (24) and the left plate (25) face each other. The front plate (26) and the rear plate (27) face each other.

[0047] The top plate (22) forms the top surface of the casing (21). The bottom plate (23) forms the bottom surface of the casing (21). The right plate (24) forms the right side of the casing (21). The left plate (25) forms the left side of the casing (21). The left plate (25) is located towards the front of the casing (21) and is continuous with the front plate (26). The front plate (26) forms the front surface of the casing (21). The rear plate (27) forms the rear surface of the casing (21). The rear plate (27) is located towards the right of the casing (21) and is continuous with the right plate (24).

[0048] A partition member (45) is provided inside the casing (21). The partition member (45) extends from the bottom plate (23) to the top plate (22). When viewed from above, the partition member (45) extends in the front-to-back direction. When viewed from above, the partition member (45) may have a curved or bent shape, or may be formed in a curved shape. The partition member (45) divides the inside of the casing (21) into a fan room (S1) and a machine room (S2). The fan room (S1) is formed on the left side of the casing (21). The machine room (S2) is formed on the right side of the casing (21).

[0049] The casing (21) has an intake port (28) and an outlet port (29). The intake port (28) is formed in the casing (21) from the rear surface to the left surface of the fan chamber (S1). The outlet port (29) is formed in the front part of the front plate (26) of the casing (21) that is in front of the fan chamber (S1). In the fan chamber (S1), a flow path is formed through which outside air flows from the intake port (28) to the outlet port (29).

[0050] (2-2) Configuration of the fan room The fan chamber (S1) is composed of a roughly rectangular parallelepiped space. The length of the fan chamber (S1) in the left-right direction is longer than the length of the fan chamber (S1) in the front-back direction. The fan chamber (S1) is equipped with an air heat exchanger (13), a fan (30), and a bell mouth (31).

[0051] The air heat exchanger (13) is formed in an L-shape when viewed from above. The air heat exchanger (13) has a first heat exchange section (13a) along the rear surface of the fan chamber (S1) and a second heat exchange section (13b) along the left surface of the fan chamber (S1). The air heat exchanger (13) is a fin-and-tube type heat exchanger. The heat transfer tubes of the air heat exchanger (13) are made up of flat multi-hole tubes, but straight tubes may also be used.

[0052] The air heat exchanger (13) of this embodiment extends into the machine room (S2). The first heat exchange section (13a) is located behind the partition member (45). The first heat exchange section (13a) extends in the left-right direction so as to pass through the space behind the rear end of the partition member (45). The right end of the first heat exchange section (13a) is located in the machine room (S2).

[0053] The fan (30) is a propeller fan and has a motor (30a) and an impeller (30b). The motor (30a) is located behind the impeller (30b). The motor (30a) is supported by a support base (32) which is installed on the base plate (23). The motor (30a) rotates the impeller (30b). The bell mouth (31) is formed in a cylindrical shape and is located around the impeller (30b). The bell mouth (31) is continuous with the air outlet (29).

[0054] (3) Configuration of the machine room The machine room (S2) is composed of a roughly rectangular parallelepiped space. The length of the machine room (S2) in the left-right direction is approximately equal to the length of the machine room (S2) in the front-rear direction. The length of the machine room (S2) in the up-down direction is longer than the length of the machine room (S2) in the left-right direction and the length of the machine room (S2) in the front-rear direction. The length of the machine room (S2) in the left-right direction is shorter than the length of the fan room (S1).

[0055] The machine room (S2) houses a compressor (12), a water heat exchanger (15), a gas-liquid separator (44), and an accumulator (17). These components are included in the refrigerant circuit (11). The outdoor unit (20) further includes a vibration isolation mechanism (50), sound insulation members (60), and a charging unit (70).

[0056] (3-1) Compressor The compressor (12) is positioned towards the front and left side of the machine room (S2). The compressor (12) has a compressor casing (12a). The compressor casing (12a) is formed in the shape of a vertically elongated hollow cylinder. The height of the compressor casing (12a) is greater than the outer diameter of the compressor casing (12a). The compressor casing (12a) constitutes a sealed pressure vessel. An intake pipe (19) is connected to the top of the compressor (12). A discharge pipe (18) is connected to the body of the compressor (12). The compressor (12) is, for example, a scroll compressor.

[0057] (3-2) Water heat exchanger The water heat exchanger (15) is located towards the right side of the machine room (S2). The water heat exchanger (15) is closer to the right plate (24) than the compressor (12). The water heat exchanger (15) is closer to the rear plate (27) than the compressor (12). The water heat exchanger (15) is a plate-type heat exchanger. The first water piping (41), the second water piping (42), and the refrigerant piping (not shown) are connected to the water heat exchanger (15).

[0058] (3-3) Gas-liquid separation device The water heat exchanger (15) is positioned above the water heat exchanger (15). The gas-liquid separator (44) is supported from below by the water heat exchanger (15). The gas-liquid separator (44) is provided with a discharge passage for releasing the gaseous refrigerant separated inside it, and a gas vent valve for opening and closing the discharge passage (not shown).

[0059] (3-4) Accumulator The accumulator (17) is connected to the suction pipe (19). The accumulator (17) is located towards the rear of the machine room (S2). The accumulator (17) is closer to the rear plate (27) than the compressor (12) and the water heat exchanger (15). The accumulator (17) is formed in the shape of a vertically elongated hollow cylinder. The height of the accumulator (17) is greater than the outer diameter of the accumulator (17).

[0060] (3-5) Vibration isolation mechanism The vibration isolation mechanism (50) suppresses vibrations of the compressor (12) and accumulator (17). The vibration isolation mechanism (50) of this embodiment has a double vibration isolation structure. Specifically, the vibration isolation mechanism (50) has a support plate (51), a first elastic support part (52), an intermediate plate (53), and a second elastic support part (54). The second elastic support part (54), the intermediate plate (53), the first elastic support part (52), and the support plate (51) are installed on the bottom plate (23) in this order.

[0061] The intermediate plate (53) is installed on the bottom plate (23) via the second elastic support part (54). In this embodiment, the intermediate plate (53) supports the compressor (12), the water heat exchanger (15), the accumulator (17), and the filling unit (70) from below. The second elastic support part (54) is fixed on the bottom plate (23) and supports the intermediate plate (53) from below. In a top view, the intermediate plate (53) is a substantially rectangular plate member.

[0062] The vibration isolation mechanism (50) of this embodiment has four second elastic support parts (54). The second elastic support parts (54) are positioned near the four tops of the intermediate plate (53). Each second elastic support part (54) is interposed between the bottom plate (23) and the intermediate plate (53). The second elastic support parts (54) are made of an elastic material such as rubber or urethane. The vibrations of the compressor (12) are damped by the second elastic support parts (54) before they are transmitted to the bottom plate (23).

[0063] The support plate (51) is installed on the intermediate plate (53) via the first elastic support part (52). The support plate (51) supports the compressor (12) from below. The first elastic support part (52) is fixed on the intermediate plate (53) and supports the support plate (51) from below. The compressor (12) is fixed on the support plate (51). In a top view, the support plate (51) is a roughly triangular plate member, installed with one apex facing forward and the side opposite that apex facing backward. A circular hole is formed in the center of the support plate (51) into which the bottom of the compressor (12) fits.

[0064] The vibration isolation mechanism (50) of this embodiment has three first elastic support parts (52). The first elastic support parts (52) are positioned near the three tops of the support plate (51). The three first elastic support parts (52) constitute the legs (12b) of the compressor (12). Each first elastic support part (52) is interposed between the support plate (51) and the intermediate plate (53). The first elastic support parts (52) are made of an elastic material such as rubber or urethane. The vibrations of the compressor (12) are damped by the first elastic support parts (52) before they are transmitted to the intermediate plate (53).

[0065] (3-6) Sound insulation materials The sound-insulating member (60) suppresses the propagation of noise from the operation of the compressor (12) to the outside of the casing (21). The sound-insulating member (60) is formed in the shape of a hollow box with an open bottom. The sound-insulating member (60) has an upper wall (61), a right wall (62), a left wall (63), a front wall (64), and a rear wall (65).

[0066] The upper wall (61) faces the top plate (22) and constitutes the upper surface of the sound-insulating member (60). The right wall (62) faces the right plate (24) and constitutes the right side of the sound-insulating member (60). The left wall (63) faces the partition member (45) and constitutes the left side of the sound-insulating member (60). The front wall (64) faces the front plate (26) and constitutes the front surface of the sound-insulating member (60). The rear wall (65) faces the rear plate (27) and constitutes the rear surface of the sound-insulating member (60). The front wall (64) is configured to be detachable from the main body of the sound-insulating member (60).

[0067] The sound-insulating member (60) is supported by the bottom plate (23) of the casing (21). The sound-insulating member (60) is made of a non-permeable material. The sound-insulating member (60) is made of, for example, a metal material or a rubber sheet. The sound-insulating member (60) forms an internal space (66) surrounding the compressor (12). In this embodiment, equipment such as the compressor (12), accumulator (17), water heat exchanger (15), and filling unit (70) are arranged in the internal space (66).

[0068] The sound-insulating member (60) and the casing (21) are arranged with a predetermined distance between them. In other words, a gap (67) is formed between the outer surface of the sound-insulating member (60) and the inner surface of the casing (21). This gap (67) suppresses the propagation of noise from the operation of the compressor (12) to the outside of the casing (21).

[0069] (3-7) Filling Unit The filling unit (70) is positioned towards the right and front of the machine room (S2). As shown in Figure 6, the filling unit (70) includes a cylinder (71), a connecting pipe (72), a control valve (73), and a protective member (74).

[0070] The cylinder (71) stores flammable refrigerant for filling the refrigerant circuit (11). The cylinder (71) is pre-filled with refrigerant when the heat source device (1) is shipped. Therefore, when the heat source device (1) is stored or transported, the cylinder (71) is filled with refrigerant. After the heat source device (1) is installed on-site, and before the heat source device (1) is put into operation, refrigerant is filled from the cylinder (71) into the refrigerant circuit (11). Therefore, when the heat source device (1) is in use, the cylinder (71) is empty.

[0071] The cylinder (71) is formed in the shape of a vertically elongated hollow cylinder. The height of the cylinder (71) is greater than the outer diameter of the cylinder (71). The cylinder (71) constitutes a sealed pressure vessel. The rigidity of the cylinder (71) is lower than that of the compressor casing (12a).

[0072] As shown in Figures 1 and 3, the cylinder (71) has an outlet (71a) at its bottom. More precisely, the outlet (71a) is formed at the bottom of the cylinder (71). The outlet (71a) discharges the flammable refrigerant from inside the cylinder (71). The density of the flammable refrigerant is relatively high. Therefore, by providing an outlet (71a) at the bottom of the cylinder (71), the discharge of the refrigerant can be promoted. In addition, when filling the refrigerant circuit (11) with refrigerant, it is possible to suppress the amount of refrigerant remaining in the cylinder (71).

[0073] The connecting pipe (72) is a pipe for injecting refrigerant from the cylinder (71) into the refrigerant circuit (11). The connecting pipe (72) connects the cylinder (71) and the refrigerant circuit (11). One end of the connecting pipe (72) is connected to the outlet (71a) of the cylinder (71) and communicates with the inside of the cylinder (71). The other end of the connecting pipe (72) is connected to the suction pipe (19). The connecting pipe (72) is located below the cylinder (71).

[0074] The control valve (73) is installed in the connecting pipe (72). The control valve (73) adjusts the opening degree of the connecting pipe (72). The control valve (73) is an example of an on-off valve that opens and closes the connecting pipe (72). The control valve (73) is a manual valve that is opened and closed manually. The control valve (73) is located below the cylinder (71).

[0075] The protective member (74) is provided on the underside of the cylinder (71). The protective member (74) has the function of protecting a portion of the connecting pipe (72) and the control valve (73). The protective member (74) supports the cylinder (71) from below. The protective member (74) has a partition wall (74a). The partition wall (74a) surrounds a portion of the connecting pipe (72) and the control valve (73). The partition wall (74a) has an opening (74b) that exposes the control valve (73) located inside it to the outside of the partition wall (74a).

[0076] (3-8) Access point As shown in Figures 3 and 4, an access opening (A) is formed on the front side of the casing (21). The front plate (26) is provided with a front panel (26a) that is detachable from the main body. By removing the front panel (26a), the access opening (A) is exposed to the outside of the casing (21). Then, by removing the front wall (64) from the sound insulation member (60), the equipment inside the casing (21) is exposed to the outside of the casing (21).

[0077] The compressor (12) and cylinder (71) correspond to the access port (A) in the front-to-back direction. A worker at the front of the casing (21) can access the compressor (12) and cylinder (71) through the access port (A). Therefore, the worker can perform maintenance on the compressor (12). In addition, the worker can operate the control valve (73) through the opening (74b) of the protective member (74).

[0078] (4) Characteristics of the arrangement of the compressor and cylinders The compressor (12) and cylinder (71) are indirectly installed on the bottom plate (23) via the intermediate plate (53). The arrangement of the compressor (12) and cylinder (71) will be described in detail with reference to Figure 6.

[0079] (4-1) Arrangement of compressor and cylinder As shown in Figure 6, the compressor (12) and the cylinder (71) are positioned horizontally offset from each other in a front view of the access port (A). The compressor (12) is located further from the front plate (26) than the cylinder (71). The distance between the compressor (12) and the front plate (26) is greater than the distance between the cylinder (71) and the front plate (26). Thus, the compressor (12) and the cylinder (71) are positioned adjacent to each other in an oblique direction with respect to the depth direction of the casing (21), i.e., the front-to-back direction, in a front view of the access port (A).

[0080] In Figure 6, the first center of gravity (C1) is the center of gravity of the compressor (12) in a top view. The second center of gravity (C2) is the center of gravity of the cylinder (71) in a top view. In this specification, "top view" means the view of the bottom plate (23) from above with the heat source device (1) installed. Also, "center of gravity" is the center of mass in a top view, or the center of mass in the horizontal direction. "Center of gravity" is not the center of mass in the vertical direction.

[0081] The first straight line (L1) is defined as a straight line passing through the first center of gravity (C1) of the compressor (12) and the second center of gravity (C2) of the cylinder (71) in a top view. The first straight line (L1) intersects in both the front-to-back and left-to-right directions and extends forward from the first center of gravity (C1) toward the second center of gravity (C2). The first straight line (L1) overlaps the front of the intermediate plate (53) and divides the intermediate plate (53) into two regions.

[0082] (4-2) Challenges when the heat source device falls The heat source device (1) houses a cylinder (71) inside a casing (21). The cylinder (71) stores propane, a flammable natural refrigerant. During transportation of the heat source device (1) before installation at the site, there is a possibility that the heat source device (1) may fall.

[0083] Figure 7(A) shows a comparative example heat source device. The comparative example heat source device does not have a restricting part (80) that restricts the direction in which the compressor (12) is displaced when it falls. Specifically, in the comparative example heat source device, in a top view, the three legs (12b) of the compressor (12) are arranged symmetrically with respect to a first straight line (L1). In the comparative example, as shown in Figures 7(A) and (B), when the heat source device falls with the first straight line (L1) coinciding with the direction of gravity, and the casing (21) collides with the ground (G) in that state, the compressor (12) moves toward the ground (G) in the direction of gravity. As a result, the compressor (12) collides with the cylinder (71) so as to overlap it vertically.

[0084] When the first straight line (L1) coincides with the direction of gravity, the load (more precisely, the impact load) acting on the cylinder (71) becomes large. This is because the vector of the impact load (white arrow in Figure 7(B)) when the compressor (12) acts on the cylinder (71) coincides with the direction of gravity. Here, the impact load is the force directed from the first center of gravity (C1) of the compressor (12) to the second center of gravity (C2) of the cylinder (71). Thus, if the heat source device falls under the condition that the first straight line (L1) coincides with the direction of gravity, there is a high possibility that the cylinder (71) will be damaged by the collision with the compressor (12). If the cylinder (71) is damaged, the flammable refrigerant will leak out.

[0085] (4-3) Regulatory Department As shown in Figure 6, the heat source device (1) is equipped with a restricting unit (80) to reduce the impact when the compressor (12) collides with the cylinder (71) during a fall under the condition that the first straight line (L1) coincides with the direction of gravity. The restricting unit (80) has the function of restricting the direction in which the compressor (12) is displaced when the heat source device (1) falls. Under the condition that the first straight line (L1) coincides with the direction of gravity, the restricting unit (80) restricts the displacement of the compressor (12) toward the cylinder (71) to a direction that deviates from the first straight line (L1).

[0086] The restricting section (80) in this embodiment is configured to guide the displacement of the compressor (12) toward the rear plate (27). The restricting section (80) is realized by devising the arrangement of the three legs (12b) of the compressor (12). Specifically, the restricting section (80) is composed of a plate member (81) and the three legs (12b) of the compressor (12). The plate member (81) is an intermediate plate (53) installed on the bottom plate (23). In a top view, the three legs (12b) are arranged asymmetrically with respect to a first straight line (L1). None of the centers of the legs (12b) coincide with the first straight line (L1).

[0087] In a top view, the number of legs (12b) differs between the region on one side and the region on the other side of the intermediate plate (53) separated by the first straight line (L1). One leg (12b) is located in the region (Af) in front of the first straight line (L1), and two legs (12b) are located in the region (Ar) behind the first straight line (L1). The one leg (12b) located in the region (Ar) behind the first straight line (L1) is the closest of the three legs (12b) to the second center of gravity (C2) of the cylinder (71) in the direction along the first straight line (L1).

[0088] (4-4) Actions when the heat source device falls In this embodiment, the operation when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity will be described.

[0089] The impact of the compressor (12) colliding with the cylinder (71) when the heat source device (1) falls is greatest when the casing (21) contacts the ground (G) with the first straight line (L1) aligned with the direction of gravity, as shown in Figures 8(A) and (B). When the heat source device (1) falls under these conditions, the side (right side) of the bottom plate (23) becomes tilted relative to the ground (G). This promotes deformation of the bottom plate (23) and the right plate (24) before the cylinder (71) collides with the ground (G). As a result, the kinetic energy of the compressor (12) can be absorbed by the deformation of the casing (21). This reduces the impact acting from the compressor (12) on the cylinder (71).

[0090] Furthermore, in this embodiment, the multiple legs (12b) supporting the compressor (12) are arranged asymmetrically with respect to the first straight line (L1). This reduces the impact acting from the compressor (12) to the cylinder (71). This is because the impact of the fall causes the load (shown by the solid arrow in Figure 8(B)) acting on the intermediate plate (53) from the legs (12b) of the compressor (12) to be biased so that it is larger in one region (in this example, the rear region (Ar)) with respect to the first straight line (L1), and the direction in which the compressor (12) is displaced (white arrow in Figure 8(B)) due to the impact of the fall of the heat source device (1) shifts from the direction toward the cylinder (71) along the first straight line (L1) toward the rear plate (27).

[0091] (5) Features of the embodiment In the heat source device (1) of this embodiment, when the device falls under the condition that the first straight line (L1) coincides with the direction of gravity, the restricting part (80) restricts the displacement of the compressor (12) toward the cylinder (71) to a direction that deviates from the first straight line (L1). Therefore, when the heat source device (1) falls and the first straight line (L1) coincides with the direction of gravity, the direction in which the compressor (12) is displaced due to the impact of the fall deviates from the direction toward the cylinder (71) along the first straight line (L1). As a result, the impact acting from the compressor (12) toward the cylinder (71) can be reduced.

[0092] In the heat source device (1) of this embodiment, the multiple legs (12b) supporting the compressor (12) are arranged asymmetrically with respect to a first straight line (L1). As a result, as shown in Figure 8(B), when the heat source device (1) falls, if the first straight line (L1) coincides with the direction of gravity, the load applied from the legs (12b) of the compressor (12) to the intermediate plate (53) due to the impact of the fall becomes unbalanced in the regions on both sides of the first straight line (L1), and the degree of deformation of the intermediate plate (53) can be made to differ in the regions on both sides of the first straight line (L1). The load applied from the legs (12b) of the compressor (12) to the intermediate plate (53), and the resulting degree of deformation of the intermediate plate (53), are greater in the rear region (Ar) where the leg (12b) closest to the second center of gravity (C2) of the cylinder (71) is located, compared to the front region (Af). Therefore, the direction in which the compressor (12) is displaced by the impact of the fall can be shifted from the direction toward the cylinder (71) along the first straight line (L1) toward the rear plate (27).

[0093] In the heat source device (1) of this embodiment, the multiple legs (12b) supporting the compressor (12) are different in one region and the other region of the intermediate plate (53) separated by a first straight line (L1). As a result, as shown in Figure 8(B), when the heat source device (1) is dropped under the condition that the first straight line (L1) coincides with the direction of gravity, the load applied from the compressor (12) to the intermediate plate (53) through the legs (12b) becomes larger in the rear region (Ar) where there are more legs (12b) separated by the first straight line (L1). This is advantageous for suitably differentiating the degree of deformation of the intermediate plate (53) in the regions on both sides of the first straight line (L1), and for shifting the direction in which the compressor (12) is displaced by the impact of the drop from the direction toward the cylinder (71) along the first straight line (L1) toward the rear plate (27).

[0094] In the heat source device (1) of this embodiment, an intermediate plate (53) that supports the compressor (12) and cylinder (71) from below is installed on the bottom plate (23) via a second elastic support part (54). As a result, vibrations of the compressor (12) during operation are suppressed by the second elastic support part (54). Furthermore, when the heat source device (1) is dropped, the impact of the fall causes deformation of the portion of the intermediate plate (53) between the compressor (12) and the cylinder (71). Therefore, the kinetic energy of the compressor (12) can be absorbed by the deformation of the intermediate plate (53), so even if the compressor (12) hits the cylinder (71), the impact acting from the compressor (12) to the cylinder (71) can be reduced.

[0095] In the heat source device (1) of this embodiment, the compressor (12) is surrounded by a sound-insulating member (60). The sound-insulating member (60) reduces the noise of the compressor (12) during operation. In addition, when the heat source device (1) falls, the sound-insulating member (60) mitigates the impact on the cylinder (71).

[0096] In the heat source device (1) of this embodiment, the entire closed-circuit refrigerant circuit (11) is provided within the casing (21). Therefore, compared to, for example, a separate-type refrigeration cycle device, the amount of refrigerant required to fill the refrigerant circuit (11) is reduced, allowing the cylinder (71) to be made smaller. As a result, the rigidity of the cylinder (71) can be increased, and damage to the cylinder (71) can be suppressed.

[0097] (6) Variant The above embodiment may also be configured in the following modified form. The differences from the above embodiment will be explained below.

[0098] (6-1) Torture 1 The heat source device (1) of Modified Example 1 and the heat source device (1) of the above embodiment differ in the direction in which the regulating part (80) guides the displacement of the compressor (12) when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity.

[0099] In this modified example, the restricting portion (80) is configured to guide the displacement of the compressor (12) toward the front plate (26). As shown in Figure 9, the support plate (51) is a roughly triangular plate member in a top view, with one apex facing the rear and the side opposite to that apex facing the front.

[0100] The three legs (12b) of the compressor (12) constitute a regulating section (80) and are arranged asymmetrically with respect to the first straight line (L1). In the intermediate plate (53), two legs (12b) are located in the region (Af) in front of the first straight line (L1), and one leg (12b) is located in the region (Ar) behind the first straight line (L1). The one leg (12b) located in the region (Af) in front of the first straight line (L1) is the closest of the three legs (12b) to the second center of gravity (C2) of the cylinder (71) in the direction along the first straight line (L1).

[0101] As shown in Figures 10(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in that state, the impact of the fall causes the load (shown by the solid arrow in Figure 10(B)) acting on the intermediate plate (53) from the compressor (12) through the legs (12b) to increase in the front region (Af) on the side of the first straight line (L1) where there are more legs (12b). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 10(B)) from the direction toward the cylinder (71) along the first straight line (L1) toward the front plate (26). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0102] (6-2) Modification 2 The heat source device (1) of modified example 2 and the heat source device (1) of the above embodiment differ in the shape of the support plate (51) and the number of legs (12b) of the compressor (12).

[0103] As shown in Figure 11, the support plate (51) of this modified example is a substantially rectangular plate member, and is installed such that one of its opposing sides faces the front and the other side faces the rear. The vibration isolation mechanism (50) of this modified example has four first elastic support parts (52). The first elastic support parts (52) are each positioned near the four tops of the support plate (51). In this way, the compressor (12) has four legs (12b).

[0104] In a top view, the four legs (12b) of the compressor (12) are arranged asymmetrically with respect to the first straight line (L1), but the number of legs (12b) is the same in one region of the intermediate plate (53) and the other region of the intermediate plate (53) with respect to the first straight line (L1). Two legs (12b) are arranged in the region in front of the first straight line (L1) (Af) and in the region behind the first straight line (L1) (Ar). The one leg (12b) located in front of the first straight line (L1) is the closest of the four legs (12b) to the second center of gravity (C2) of the cylinder (71) in the direction along the first straight line (L1).

[0105] As shown in Figures 12(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in that state, the load on the intermediate plate (53) from the legs (12b) of the compressor (12) due to the impact of the fall (shown by the solid arrow in Figure 12(B)), and the degree of deformation of the intermediate plate (53) as a result, will be greater in the region in front of the first straight line (L1) (Af) than in the region behind it (Ar). Therefore, the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 12(B)) can be shifted from the direction toward the cylinder (71) along the first straight line (L1) toward the front plate (26). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0106] (6-3) Modification example 3 The heat source device (1) of Modified Example 3 and the heat source device (1) of the above embodiment differ in the configuration of the regulating section (80). The regulating section (80) of this modified example is realized by devising the configuration of the intermediate plate (53) in addition to the arrangement of the three legs (12b) of the compressor (12).

[0107] Specifically, as shown in Figure 13, the restricting portion (80) is constructed by providing a rib (81a) on the intermediate plate (53). The rib (81a) in this example is provided so as to displace the compressor (12) to the same side as the side displaced by the arrangement of the three legs (12b) in the above embodiment when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity.

[0108] The second line (L2) shown in Figure 13 is defined as a line that, in a top view, is perpendicular to the first line (L1) and passes through the first centroid (C1) of the compressor (12). The second line (L2) intersects both the front-to-back and left-to-right directions and extends to the right from the front to the rear. The second line (L2) overlaps the left side of the intermediate plate (53) and divides the intermediate plate (53) into two regions.

[0109] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Af) of the intermediate plate (53) that is in front of the first line (L1). In this example, the second region (A2) is part of the region (Ar) of the intermediate plate (53) that is behind the first line (L1). The rib (81a) is provided in the first region (A1) and extends in a direction intersecting the second line (L2).

[0110] A rib (81a) is a portion of the intermediate plate (53) that is formed to be convex upward. A rib (81a) may also be a portion of the intermediate plate (53) that is formed to be convex downward. In a top view, a rib (81a) is provided to extend along the first straight line (L1) on the front side between the compressor (12) and the cylinder (71). A rib (81a) is also provided to extend along the entire front edge of the intermediate plate (53) and a portion of the right edge near the front end.

[0111] As shown in Figures 14(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in that state, the impact of the fall causes the compressor (12) to move downward, and a load is applied from the legs (12b) of the compressor (12) to the intermediate plate (53), causing the intermediate plate (53) to buckle. In this modified example, a rib (81a) is provided in the first region (A1) of the intermediate plate (53). The rib (81a) extends in a direction intersecting the second straight line (L2). The rib (81a) increases the buckling strength of the intermediate plate (53) in the direction along the first straight line (L1) in the first region (A1) compared to the second region (A2).

[0112] As a result, when the heat source device (1) falls, if the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the intermediate plate (53) buckles before the first region (A1) when the load from the compressor (12) is applied to the intermediate plate (53). This allows the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 14(B)) to be shifted from the direction toward the cylinder (71) along the first straight line (L1) toward the rear plate (27). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0113] (6-4) Modification 4 The heat source device (1) of Modification 4 and the heat source device (1) of the above embodiment differ in the direction in which the regulating part (80) guides the displacement of the compressor (12) when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and in the configuration of the regulating part (80).

[0114] In this modified example, the restricting portion (80) is configured to guide the displacement of the compressor (12) toward the front plate (26). As shown in Figure 15, the installation state of the support plate (51) and the arrangement of the three legs (12b) of the compressor (12) are the same as in the modified example 1 described above.

[0115] The restricting section (80) is constructed by providing a rib (81a) on the intermediate plate (53). The rib (81a) in this example is provided so as to displace the compressor (12) to the same side as the side displaced by the arrangement of the three legs (12b) in the above modified example 1 when the heat source device (1) falls with the first straight line (L1) coinciding with the direction of gravity. The second straight line (L2) shown in Figure 15 is defined in the same way as in the above modified example 3.

[0116] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Ar) of the intermediate plate (53) that is behind the first line (L1). In this example, the second region (A2) is part of the region (Af) of the intermediate plate (53) that is in front of the first line (L1). The rib (81a) is provided in the first region (A1) and extends in a direction intersecting the second line (L2).

[0117] A rib (81a) is a portion of the intermediate plate (53) that is formed to be convex upward. A rib (81a) may also be a portion of the intermediate plate (53) that is formed to be convex downward. In a top view, a rib (81a) is provided to extend in the left-right direction between the water heat exchanger (15) and the cylinder (71). A rib (81a) is also provided to extend along the entire right edge of the intermediate plate (53) and a portion near the right end of the rear edge.

[0118] As shown in Figures 16(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in this modified example, since a rib (81a) is provided in the first region (A1) of the intermediate plate (53), when a load from the compressor (12) is applied to the intermediate plate (53), the second region (A2) of the intermediate plate (53) buckles before the first region (A1). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 16(B)) from the direction toward the cylinder (71) along the first straight line (L1) toward the front plate (26). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0119] (6-5) Variation 5 The heat source device (1) of Modification 5 and the heat source device (1) of the above embodiment differ in the configuration of the regulating section (80). The regulating section (80) of this modification is realized by devising the configuration of the intermediate plate (53) in addition to the arrangement of the three legs (12b) of the compressor (12).

[0120] Specifically, as shown in Figure 17, the restricting portion (80) is constructed by providing a partially thickened thickened portion (81b) on the intermediate plate (53). The thickened portion (81b) in this example is provided so as to displace the compressor (12) to the same side as the side displaced by the arrangement of the three legs (12b) in the above embodiment when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity. The second straight line (L2) shown in Figure 17 is defined in the same way as in the above modified example 3.

[0121] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Af) of the intermediate plate (53) that is in front of the first line (L1). In this example, the second region (A2) is part of the region (Ar) of the intermediate plate (53) that is behind the first line (L1).

[0122] In this example, the thickened portion (81b) is the area with dot hatching in Figure 17 and constitutes the entirety of the first region (A1). The thickness of the thickened portion (81b) is 1.5 times or more thicker than the thickness of other parts of the intermediate plate (53). In this example, the thickened portion (81b) does not constitute the second region (A2). That is, the second region (A2) does not include the thickened portion (81b). The thickened portion (81b) may constitute only a part of the first region (A1), or it may also constitute a part of a region other than the first region (A1).

[0123] As shown in Figures 18(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G), the impact of the fall causes the compressor (12) to move downward, and a load is applied from the legs (12b) of the compressor (12) to the intermediate plate (53), causing the intermediate plate (53) to buckle. In this modified example, a thickened section (81b) is provided in the first region (A1) of the intermediate plate (53), and the thickness of the intermediate plate (53) is greater in the first region (A1) than in the second region (A2). The buckling strength of the intermediate plate (53) is higher in the thicker parts of the intermediate plate (53).

[0124] Therefore, the buckling strength of the intermediate plate (53) in the direction along the first straight line (L1) is higher in the first region (A1) than in the second region (A2). As a result, when the heat source device (1) is dropped, if the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the intermediate plate (53) will buckle before the first region (A1) when the load from the compressor (12) is applied to the intermediate plate (53). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 18(B)) from the direction toward the cylinder (71) along the first straight line (L1) toward the rear plate (27). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0125] (6-6) Modification 6 The heat source device (1) of Modification 6 and the heat source device (1) of the above embodiment differ in the direction in which the regulating part (80) guides the displacement of the compressor (12) when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and in the configuration of the regulating part (80).

[0126] In this modified example, the restricting portion (80) is configured to guide the displacement of the compressor (12) toward the front plate (26). As shown in Figure 19, the installation state of the support plate (51) and the arrangement of the three legs (12b) of the compressor (12) are the same as in the modified example 1 described above.

[0127] The restricting portion (80) is constructed by providing a thickened portion (81b) on the intermediate plate (53) that is thicker than the other parts. In this example, the thickened portion (81b) is provided so that when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, the compressor (12) is displaced to the same side as the side displaced by the arrangement of the three legs (12b) in the above modified example 1. The second straight line (L2) shown in Figure 19 is defined in the same way as in the above modified example 3.

[0128] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Ar) of the intermediate plate (53) behind the first line (L1). In this example, the second region (A2) is part of the region (Af) of the intermediate plate (53) in front of the first line (L1).

[0129] In this example, the thickened portion (81b) is the area with dot hatching in Figure 19 and constitutes the entirety of the first region (A1). The thickness of the thickened portion (81b) is the same as the thickness of the thickened portion (81b) in the modified example 5 described above. The thickened portion (81b) does not constitute the second region (A2). That is, the second region (A2) does not include the thickened portion (81b). The thickened portion (81b) may constitute only a part of the first region (A1), or it may also constitute a part of a region other than the first region (A1).

[0130] As shown in Figures 20(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in this modified example, since the thickness of the intermediate plate (53) is greater in the first region (A1) than in the second region (A2), when the load from the compressor (12) is applied to the intermediate plate (53), the second region (A2) of the intermediate plate (53) buckles before the first region (A1). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 20(B)) from the direction toward the cylinder (71) along the first straight line (L1) toward the front plate (26). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0131] (6-7) Variation 7 The heat source device (1) in Modification Example 7 and the heat source device (1) in the above embodiment differ in the configuration of the regulating section (80). The regulating section (80) in this modification is realized by devising the configuration of the intermediate plate (53) in addition to the arrangement of the three legs (12b) of the compressor (12).

[0132] Specifically, as shown in Figure 21, the restricting portion (80) is constructed by providing a high-strength portion (81c) on the intermediate plate (53) that is stronger than the other parts. The high-strength portion (81c) in this example is provided so as to displace the compressor (12) to the same side as the side that is displaced by the arrangement of the three legs (12b) in the above embodiment when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity. The second straight line (L2) shown in Figure 21 is defined in the same way as in the above modified example 3.

[0133] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Af) of the intermediate plate (53) that is in front of the first line (L1). In this example, the second region (A2) is part of the region (Ar) of the intermediate plate (53) that is behind the first line (L1).

[0134] In this example, the high-strength portion (81c) is the area hatched with diagonal lines in Figure 21 and constitutes the entirety of the first region (A1). The high-strength portion (81c) in this example does not constitute the second region (A2). That is, the high-strength portion (81c) is not included in the second region (A2). The high-strength portion (81c) and the other parts of the intermediate plate (53) are formed from different materials. For example, the high-strength portion (81c) of the intermediate plate (53) is made of carbon steel. The other parts are made of spheroidal graphite cast iron. The Young's modulus of the material making up the intermediate plate (53) is greater in the first region (A1) than in the second region (A2). The high-strength portion (81c) may constitute only a part of the first region (A1), or it may also constitute a part of a region other than the first region (A1).

[0135] As shown in Figures 22(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in that state, the impact of the fall causes the compressor (12) to move downward, and a load is applied from the legs (12b) of the compressor (12) to the intermediate plate (53), causing the intermediate plate (53) to buckle. In this modified example, a high-strength section (81c) is provided in the first region (A1) of the intermediate plate (53), and the Young's modulus of the material making up the intermediate plate (53) is greater in the first region (A1) than in the second region (A2). The buckling strength of the intermediate plate (53) is higher in the part of the intermediate plate (53) where the Young's modulus of the material is greater.

[0136] Therefore, the buckling strength of the intermediate plate (53) in the direction along the first straight line (L1) is higher in the first region (A1) than in the second region (A2). As a result, when the heat source device (1) is dropped, if the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the intermediate plate (53) will buckle before the first region (A1) when the load from the compressor (12) is applied to the intermediate plate (53). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 22(B)) from the direction toward the cylinder (71) along the first straight line (L1) toward the rear plate (27). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0137] (6-8) Variation 8 The heat source device (1) of Modification 8 and the heat source device (1) of the above embodiment differ in the direction in which the regulating part (80) guides the displacement of the compressor (12) when it falls under the condition that the first straight line (L1) coincides with the direction of gravity, and in the configuration of the regulating part (80).

[0138] In this modified example, the restricting portion (80) is configured to guide the displacement of the compressor (12) toward the front plate (26). As shown in Figure 23, the installation state of the support plate (51) and the arrangement of the three legs (12b) of the compressor (12) in this example are the same as in Modified Example 1 described above.

[0139] The restricting section (80) is constructed by providing a high-strength section (81c) on the intermediate plate (53) that is partially made stronger. The high-strength section (81c) in this example is provided so that when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, the compressor (12) is displaced to the same side as the side that is displaced by the arrangement of the three legs (12b) in the above modified example 1. The second straight line (L2) shown in Figure 23 is defined in the same way as in the above modified example 3.

[0140] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Af) of the intermediate plate (53) that is in front of the first line (L1). In this example, the second region (A2) is part of the region (Ar) of the intermediate plate (53) that is behind the first line (L1).

[0141] In this example, the high-strength portion (81c) is the part with hatched lines in Figure 23 and constitutes the entirety of the first region (A1). The material of the high-strength portion (81c) and other parts of the intermediate plate (53) is the same as in the modified example 7 described above. The high-strength portion (81c) does not constitute the second region (A2). That is, the high-strength portion (81c) is not included in the second region (A2). The high-strength portion (81c) may constitute only a part of the first region (A1), or it may also constitute a part of a region other than the first region (A1).

[0142] As shown in Figures 24(A) and (B), when the heat source device (1) falls with the first straight line (L1) aligned with the direction of gravity, and the casing (21) comes into contact with the ground (G) in this modified example, since the Young's modulus of the material making up the intermediate plate (53) is greater in the first region (A1) than in the second region (A2), when the load from the compressor (12) is applied to the intermediate plate (53), the second region (A2) of the intermediate plate (53) buckles before the first region (A1). This allows the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 24(B)) to be shifted from the direction toward the cylinder (71) along the first straight line (L1) toward the front plate (26). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0143] (6-9) Variation 9 The heat source device (1) of Modification 9 and the heat source device (1) of the above embodiment differ in the configuration of the regulating section (80). The regulating section (80) of this modification is realized by devising the configuration of the intermediate plate (53) in addition to the arrangement of the three legs (12b) of the compressor (12).

[0144] Specifically, as shown in Figure 25, the restricting portion (80) is configured by forming an opening (53d) in the intermediate plate (53). The opening (53d) in this example is provided so as to displace the compressor (12) to the same side as the side displaced by the arrangement of the three legs (12b) in the above embodiment when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity. The second straight line (L2) shown in Figure 25 is defined in the same way as in the above modified example 3.

[0145] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Af) of the intermediate plate (53) that is in front of the first line (L1). In this example, the second region (A2) is part of the region (Ar) of the intermediate plate (53) that is behind the first line (L1). The opening (53d) is provided in the second region (A2) and penetrates the intermediate plate (53).

[0146] The opening (53d) is formed as a slit extending in a direction intersecting the first straight line (L1). In a top view, the opening (53d) extends in the front-rear direction from between the compressor (12) and the cylinder (71) to between the compressor (12) and the water heat exchanger (15). In the direction along the first straight line (L1), the opening (53d) corresponds to the leg (12b) of the compressor (12) that is located in the second region (A2) of the intermediate plate (53). As shown in Figure 25, there may be one opening (53d) or multiple openings may be formed.

[0147] As shown in Figures 26(A) and (B), when the heat source device (1) falls with the first straight line (L1) aligned with the direction of gravity, and the casing (21) contacts the ground (G) in that state, the impact of the fall causes the compressor (12) to move downward, and a load is applied from the legs (12b) of the compressor (12) to the intermediate plate (53), causing the intermediate plate (53) to buckle. In this modified example, an opening (53d) is formed in the second region (A2) of the intermediate plate (53). This opening (53d) penetrates the intermediate plate (53). The buckling strength of the intermediate plate (53) decreases in the region where the opening (53d) is located.

[0148] Therefore, the buckling strength of the intermediate plate (53) in the direction along the first straight line (L1) is lower in the second region (A2) than in the first region (A1). As a result, when the heat source device (1) is dropped, if the first straight line (L1) coincides with the direction of gravity, the second region (A2) of the intermediate plate (53) buckles before the first region (A1) when the load from the compressor (12) is applied to the intermediate plate (53). This makes it possible to shift the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 26(B)) from the direction toward the cylinder (71) along the first straight line (L1) toward the rear plate (27). As a result, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0149] (6-10) Experimental variation 10 The heat source device (1) of modified example 10 and the heat source device (1) of the above embodiment differ in the direction in which the regulating part (80) guides the displacement of the compressor (12) when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and in the configuration of the regulating part (70).

[0150] In this modified example, the restricting portion (80) is configured to guide the displacement of the compressor (12) toward the front plate (26). As shown in Figure 27, the installation state of the support plate (51) and the arrangement of the three legs (12b) of the compressor (12) in this example are the same as in the modified example 1 described above.

[0151] The restricting portion (80) is formed by creating an opening (53d) in the intermediate plate (53). The opening (53d) in this example is provided so as to displace the compressor (12) to the same side as the side displaced by the arrangement of the three legs (12b) in the above modified example 1 when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity. The second straight line (L2) shown in Figure 27 is defined in the same way as in the above modified example 3.

[0152] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the side of the cylinder (71) that is further than the second line (L2). In this example, the first region (A1) is part of the region (Ar) of the intermediate plate (53) that is behind the first line (L1). In this example, the second region (A2) is part of the region (Af) of the intermediate plate (53) that is in front of the first line (L1). The opening (53d) is provided in the first region (A1) and penetrates the intermediate plate (53).

[0153] The opening (53d) is formed as a slit extending in a direction intersecting the first straight line (L1). In a top view, the opening (53d) extends in the front-rear direction from the front edge of the intermediate plate (53) to the compressor (12) and the cylinder (71), and is open at the front edge of the intermediate plate (53). In the direction along the first straight line (L1), the opening (53d) corresponds to the leg (12b) of the compressor (12) that is located in the second region (A2) of the intermediate plate (53). As shown in Figure 27, there may be one opening (53d) or multiple openings may be formed.

[0154] As shown in Figures 28(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in this modified example, an opening (53d) is formed in the second region (A2) of the intermediate plate (53). As a result, when the load from the compressor (12) is applied to the intermediate plate (53), the second region (A2) of the intermediate plate (53) buckles before the first region (A1). This allows the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 28(B)) to be shifted from the direction toward the cylinder (71) along the first straight line (L1) toward the front plate (26). Consequently, the impact acting from the compressor (12) on the cylinder (71) can be reduced.

[0155] (6-11) Torture 11 The heat source device (1) of Modification 11 and the heat source device (1) of the above embodiment differ in the configuration of the regulating section (80). As shown in Figure 29, the regulating section (80) of this modification is configured to include a support member (82) in addition to the arrangement of the three legs (12b) of the compressor (12). The second straight line (L2) shown in Figure 29 is defined in the same way as in Modification 3 above.

[0156] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the cylinder (71) side of the second line (L2). In this example, the first region (A1) is part of the region (Af) of the intermediate plate (53) in front of the first line (L1). In this example, the second region (A2) is part of the region (Ar) of the intermediate plate (53) in rear of the first line (L1). In this example, the support member (82) supports the compressor (12) relative to the intermediate plate (53).

[0157] The support member (82) is a long plate member, made of steel material such as an angle. The support member (82) is located on the cylinder (71) side of the compressor (12) and is provided in the first region (A1) of the intermediate plate (53). In a top view, the support member (82) extends in a direction intersecting the first straight line (L1) and the second straight line (L2), and extends forward (i.e., to the right front) from the compressor (12) side toward the cylinder (71) side. One end of the support member (82) is fixed to the outer circumferential surface of the compressor (12). The other end of the support member (82) is fixed to the upper surface of the intermediate plate (53).

[0158] As shown in Figures 30(A) and (B), when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, and the casing (21) comes into contact with the ground (G) in that state, the compressor (12) will attempt to move downward due to the impact of the fall. In this modified example, a support member (82) is provided on the cylinder (71) side of the compressor (12). The support member (82) extends in a direction intersecting the first straight line (L1) when viewed from above, and supports the compressor (12) on an intermediate plate (53) installed on the bottom plate (23).

[0159] When the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, the support member (82) is interposed between the compressor (12) and the intermediate plate (53), causing a force to be applied from the support member (82) to the compressor (12) in a direction different from the direction toward the cylinder (71). This allows the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 30(B)) to be shifted from the direction toward the cylinder (71) along the first straight line (L1). As a result, the impact acting from the compressor (12) to the cylinder (71) can be reduced.

[0160] (6-12) Variation 12 The heat source device (1) of Modification 4 and the heat source device (1) of the above embodiment differ in the direction in which the regulating part (80) guides the displacement of the compressor (12) when it falls under the condition that the first straight line (L1) coincides with the direction of gravity, and in the configuration of the regulating part (80).

[0161] In this modified example, the restricting portion (80) is configured to guide the displacement of the compressor (12) toward the front plate (26). As shown in Figure 31, the installation state of the support plate (51) and the arrangement of the three legs (12b) of the compressor (12) are the same as in the modified example 1 described above.

[0162] The restricting section (80) is composed of a support member (82). In this example, the support member (82) is provided such that when the heat source device (1) falls under the condition that the first straight line (L1) coincides with the direction of gravity, the compressor (12) is displaced to the same side as the side displaced by the arrangement of the three legs (12b) in the above modified example 1. The second straight line (L2) shown in Figure 31 is defined in the same way as in the above modified example 3.

[0163] The intermediate plate (53), in a top view, has a first region (A1) and a second region (A2) that are demarcated by the first line (L1) on the cylinder (71) side of the second line (L2). In this example, the first region (A1) is part of the region (Ar) of the intermediate plate (53) behind the first line (L1). In this example, the second region (A2) is part of the region (Af) of the intermediate plate (53) in front of the first line (L1). In this example, the support member (82) supports the compressor (12) against the peripheral wall (21a) of the casing (21).

[0164] The support member (82) is a long plate member, made of steel material such as an angle. The support member (82) is located on the cylinder (71) side of the compressor (12) and is provided in the first region (A1) of the intermediate plate (53). In a top view, the support member (82) extends in a direction intersecting the first straight line (L1) and the second straight line (L2), extending from the compressor (12) side through the rear of the cylinder (71) to the right (more precisely, to the right rear), and penetrating the right wall (62) of the sound insulation member (60). One end of the support member (82) is fixed to the outer surface of the compressor (12). The other end of the support member (82) is fixed to the inner surface of the right plate (24).

[0165] As shown in Figures 32(A) and (B), when the heat source device (1) falls with the first straight line (L1) aligned with the direction of gravity, and the casing (21) comes into contact with the ground (G), in this modified example, a support member (82) is provided on the cylinder (71) side of the compressor (12). As a result, the support member (82) is interposed between the peripheral wall (21a) of the casing (21) and the compressor (12), and a force is applied from the support member (82) to the compressor (12) in a direction different from the direction toward the cylinder (71). This allows the direction in which the compressor (12) is displaced by the impact of the fall (white arrow in Figure 32(B)) to be shifted from the direction toward the cylinder (71) along the first straight line (L1) toward the front plate (26). Consequently, the impact acting from the compressor (12) to the cylinder (71) can be reduced.

[0166] (6-13) Variation 13 As shown in Figure 33, in the heat source device (1) of the modified example 13, the outdoor unit (20) further includes a sound-absorbing material (90). The sound-absorbing material (90) has the function of attenuating sound. The sound-absorbing material (90) is a resin material having open cells, and is composed of, for example, urethane. The sound-absorbing material (90) is arranged to overlap the outer or inner surface of the casing (21).

[0167] Specifically, the sound-absorbing material (90) is formed on the inside of the top wall (61), right wall (62), left wall (63), front wall (64), and rear wall (65) of the sound-insulating member (60). By using the sound-absorbing material (90), the noise reduction effect in the machine room (S2) is improved. The sound-absorbing material (90) mitigates the impact when the cylinder (71) hits the ground (G) when the heat source device (1) falls. The sound-absorbing material (90) may be provided on the outside of the sound-insulating member (60) instead of the inside, or it may be provided on both the inside and outside of the sound-insulating member (60).

[0168] (7) Other embodiments As shown in Figure 34, the vibration isolation mechanism (50) does not necessarily have an intermediate plate (53) and a second elastic support (54). For example, the vibration isolation mechanism (50) may consist of a support plate (51) and three first elastic support parts (52). The support plate (51) is fixed on the bottom plate (23) via the three first elastic support parts (52). Each first elastic support part (52) is fixed on the bottom plate (23) and supports the support plate (51) from below. The compressor (12) is supported from below by the support plate (51). In this case, the plate member (81) constituting the regulating part (80) consists of the bottom plate (23).

[0169] In the heat source device (1) of the above embodiment, when the plate member (81) is made of a bottom plate (23), the three legs (12b) are arranged asymmetrically with respect to the first straight line (L1) in a top view. This is the same in the heat source device (1) of the above modified example 1 and the above modified example 2. In the heat source device (1) of the above modified example 1, even when the plate member (81) is made of a bottom plate (23), the number of legs (12b) is different in the region on one side of the bottom plate (23) and the region on the other side with respect to the first straight line (L1).

[0170] In the heat source device (1) of the modified example 3 described above, if the plate member (81) is made of a bottom plate (23), the bottom plate (23) has a first region (A1) and a second region (A2) that are separated by a first line (L1) on the cylinder (71) side of the second line (L2) when viewed from above. The first region (A1) is the region (Af) in front of the first line (L1). A rib (81a) extending in a direction intersecting the second line (L2) is provided in the first region (A1). This is the same in the heat source device (1) of the modified example 4 described above.

[0171] In the heat source device (1) of the above modified example 5, when the plate member (81) is made of a bottom plate (23), the bottom plate (23) has a first region (A1) and a second region (A2) that are separated by a first straight line (L1) on the cylinder (71) side of the second straight line (L2) when viewed from above. The first region (A1) is the region (Af) in front of the first straight line (L1). A thickened portion (81b) is provided in the first region (A1) that is thicker than the other parts, and the thickness of the bottom plate (23) is greater in the first region (A1) than in the second region (A2). This is the same in the above modified example 6.

[0172] In the heat source device (1) of the modified example 7 described above, when the plate member (81) is made of a bottom plate (23), the bottom plate (23) has a first region (A1) and a second region (A2) that are separated by a first line (L1) on the cylinder (71) side of the second line (L2) when viewed from above. The first region (A1) is the region (Af) in front of the first line (L1). The high-strength portion (81c), which is stronger than the other parts, is provided in the first region (A1). The high-strength portion (81c) of the bottom plate (23) and the other parts are made of different materials, and the Young's modulus of the material making up the bottom plate (23) is greater in the first region (A1) than in the second region (A2). This is the same in the heat source device (1) of the modified example 8 described above.

[0173] In the heat source device (1) of the modified example 9 described above, if the plate member (81) is made of a bottom plate (23), the bottom plate (23) has a first region (A1) and a second region (A2) that are separated by a first line (L1) on the cylinder (71) side of the second line (L2) when viewed from above. The first region (A1) is the region (Af) in front of the first line (L1). An opening (81d) that penetrates the bottom plate (23) is provided in the first region (A1). This is the same in the heat source device (1) of the modified example 10 described above.

[0174] In the heat source device (1) of the modified example 11 described above, if the plate member (81) is made of a bottom plate (23), the bottom plate (23) has a first region (A1) and a second region (A2) that are separated by a first line (L1) on the cylinder (71) side of the second line (L2) when viewed from above. The first region (A1) is the region (Af) in front of the first line (L1). A support member (82) is provided in the first region (A1) and supports the compressor (12) against the peripheral wall (21a) of the casing (21) or the bottom plate (23). This is the same in the heat source device (1) of the modified example 12 described above.

[0175] In the heat source device (1) of the above modified examples 3 to 12, the multiple legs (12b) may be arranged symmetrically with respect to the first straight line (L1) when viewed from above. The restricting part (80) can be any configuration other than the above embodiments and modified examples 1 to 12, as long as it restricts the displacement of the compressor (12) toward the cylinder (71) in a direction away from the first straight line (L1), provided that the first straight line (L1) coincides with the direction of gravity.

[0176] The intermediate plate (53) may support only the compressor (12) and the filling unit (70) from below. In this case, the water heat exchanger (15) and the accumulator (17) may be directly supported by the bottom plate (23) of the casing (21).

[0177] The heat source device (1) may constitute a part of the refrigeration cycle device. Specifically, the refrigeration cycle device may be a separate type in which the heat source unit, which is the heat source device (1), and the utilization unit are connected via connecting piping. The refrigeration cycle device may also be an air conditioning system, a transport-type refrigeration system, a stationary-type refrigeration system, etc.

[0178] The sound-insulating member (60) may cover only the compressor (12).

[0179] While embodiments and variations have been described above, it will be understood that a variety of modifications to the form and details are possible without departing from the spirit and scope of the claims. Furthermore, these embodiments and variations may be combined or substituted as appropriate, as long as they do not impair the functions covered by this disclosure.

[0180] Furthermore, the designations "First," "Second," "Third," etc., in the specification and claims are used to distinguish between the terms to which these designations are attached, and do not limit the number or order of such terms. [Industrial applicability]

[0181] As explained above, this disclosure is useful for heat source devices. [Explanation of symbols]

[0182] A1 1st area A2 2nd area C1 First center of gravity (center of gravity of the compressor) C2 Second center of gravity (center of gravity of the cylinder) L1 1st straight line L2 2nd straight line 1 Heat source device 11 Refrigerant Circuit 12 Compressor 12a Legs 20 Outdoor Units 21 Casing 23 Bottom plate 53 Intermediate plate 53a Rib 53d aperture 54. Second elastic support section (elastic support section) 60 Sound insulation material 71 cylinders 71a Outlet 80 Regulatory Department 81 Plate members 82 Support Member 90 Sound-absorbing material

Claims

1. A heat source device, A compressor (12) is included in the refrigerant circuit (11) that performs the refrigeration cycle, A cylinder (71) that stores flammable refrigerant for filling the refrigerant circuit (11) and has an outlet (71a) at its bottom for discharging the flammable refrigerant, A casing (21) having a bottom plate (23) on which the compressor (12) and the cylinder (71) are installed, The heat source device includes a restricting unit (80) that restricts the direction in which the compressor (12) is displaced when the heat source device falls, The first straight line (L1) is defined as a straight line passing through the center of gravity (C1) of the compressor (12) and the center of gravity (C2) of the cylinder (71) in a top view of the bottom plate (23) with the heat source device installed. The restricting unit (80), under the condition that the first straight line (L1) coincides with the direction of gravity, restricts the displacement of the compressor (12) toward the cylinder (71) in a direction that deviates from the first straight line (L1). Heat source device.

2. In the heat source device according to claim 1, The aforementioned regulating section (80) is An intermediate plate (53) or a plate member (81) made of the bottom plate (23) is installed on the bottom plate (23), It is configured to include a plurality of legs (12b) fixed to the plate member (81) and supporting the compressor (12) from below, In the above top view, the plurality of legs (12b) are arranged asymmetrically with respect to the first straight line (L1). Heat source device.

3. In the heat source device according to claim 2, In the above top view, the number of legs (12b) differs between the region on one side and the region on the other side of the plate member (81) separated by the first straight line (L1). Heat source device.

4. In the heat source device according to claim 1, The regulating section (80) is configured to include a plate member (81) that supports the compressor (12) from below, The second line (L2) is defined as a line that is perpendicular to the first line (L1) and passes through the centroid (C1) of the compressor (12). The aforementioned plate member (81) is The intermediate plate (53) is installed on the bottom plate (23), or the bottom plate (23), In the above top view, the first region (A1) and the second region (A2) are located on the side of the cylinder (71) that is closer to the second line (L1) and are demarcated by the first line (L1). The first region (A1) is provided with a rib (53a) extending in a direction intersecting the second straight line (L2). Heat source device.

5. In the heat source device according to claim 1, The regulating section (80) is configured to include a plate member (81) that supports the compressor (12) from below, The second line (L2) is defined as a line that is perpendicular to the first line (L1) and passes through the centroid (C1) of the compressor (12). The aforementioned plate member (81) is The intermediate plate (53) is installed on the bottom plate (23), or the bottom plate (23), In the above top view, the first region (A1) and the second region (A2) are demarcated by the first line (L1) on the side of the cylinder (71) that is closer to the second line (L2), The thickness of the plate member (81) is greater in the first region (A1) than in the second region (A2). Heat source device.

6. In the heat source device according to claim 1, The regulating section (80) is configured to include a plate member (81) that supports the compressor (12) from below, The second line (L2) is defined as a line that is perpendicular to the first line (L1) and passes through the centroid (C1) of the compressor (12). The aforementioned plate member (81) is The intermediate plate (53) is installed on the bottom plate (23), or the bottom plate (23), In the above top view, the first region (A1) and the second region (A2) are located on the side of the cylinder (71) that is closer to the second line (L2) and are demarcated by the first line (L2). The Young's modulus of the material forming the plate member (81) is greater in the first region (A1) than in the second region (A2). Heat source device.

7. In the heat source device according to claim 1, The regulating section (80) is configured to include a plate member (81) that supports the compressor (12) from below, The second line (L2) is defined as a line that is perpendicular to the first line (L1) and passes through the centroid (C1) of the compressor (12). The aforementioned plate member (81) is The intermediate plate (53) is installed on the bottom plate (23), or the bottom plate (23), In the above top view, the first region (A1) and the second region (A2) are demarcated by the first line (L1) on the side of the cylinder (71) that is closer to the second line (L2), An opening (53d) is formed in the second region (A2) that penetrates the plate member (81). Heat source device.

8. In the heat source device according to claim 1, The regulating section (80) is configured to include an intermediate plate (53) installed on the bottom plate (23), a support member (82) that supports the compressor (12) with respect to the bottom plate (23), or the peripheral wall (21a) of the casing (21), The support member (82) is located on the cylinder (71) side of the compressor (12) and extends in a direction that intersects the first straight line (L1) in the top view. Heat source device.

9. In the heat source device according to claim 1, An intermediate plate (53) supports the compressor (12) and the cylinder (71) from below, The system further includes an elastic support part (54) fixed on the bottom plate (23) and supporting the intermediate plate (53) from below. Heat source device.

10. In the heat source device according to claim 1, The compressor (12) is further provided with a sound-insulating member (60) surrounding it. Heat source device.

11. In the heat source device according to claim 1, The casing (21) further comprises sound-absorbing material (90) arranged to overlap the outer or inner surface, Heat source device.

12. In the heat source device according to any one of claims 1 to 11, The casing (21) houses the entire refrigerant circuit (11). Heat source device.

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