Refrigeration Cycle Equipment

Abstract

A refrigeration cycle device of an embodiment of the present invention has a machine compartment, a first plate, and a second plate. The machine compartment accommodates component parts. The first plate is provided to a casing of the machine compartment. A first hole into which an anchor bolt is inserted is formed in the first plate. The second plate is provided inside the outer periphery of the casing. A second hole into which a suspension tool is inserted is formed in the second plate. The distance between the normal of the first plate passing through the center of the first hole and the normal of the second plate passing through the center of the second hole is larger than the sum of the radius of the first hole and the radius of the second hole.

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a refrigeration cycle device. This application claims priority based on Japanese Patent Application No. 2021-201743, filed on December 13, 2021, the contents of which are incorporated herein by reference. [Background technology]

[0002] Refrigeration cycle devices are used for air conditioning and the like. The refrigeration cycle device has a machine room that houses components. The machine room is fixed to the installation location with bolts or the like. In some cases, multiple machine rooms are arranged side by side at the installation location. It is therefore required that the refrigeration cycle device be easily installed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2017 / 216926 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a refrigeration cycle device that can be easily installed. [Means for solving the problem]

[0005] The refrigeration cycle device of the embodiment has a machine room, a first plate, and a second plate. The machine room houses components. The first plate is mounted in a housing of the machine room. The first plate has a first hole formed therein, into which an anchor bolt is inserted. The second plate is mounted inside the outer periphery of the housing. The second plate has a second hole formed therein, into which a hanging tool is inserted. The distance between a normal line of the first plate passing through the center of the first hole and a normal line of the second plate passing through the center of the second hole is greater than the sum of the radius of the first hole and the radius of the second hole. The housing has a rectangular outer shape in a plan view. The first hole is located at a corner of the housing, on the inside of an acute angle formed by a long side of the housing and a base side of the second plate. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. [Figure 2] 1 is a circuit diagram of a refrigeration cycle device. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] Front view of the shackle. [Figure 6] FIG. 6 is a plan cross-sectional view taken along line VI-VI in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, a refrigeration cycle device according to an embodiment will be described with reference to the drawings. 1 is a perspective view of a refrigeration cycle device. The refrigeration cycle device 1 of the embodiment is an air-cooled heat pump type heat source machine. The refrigeration cycle device 1 has a plurality of modules 10 (10a-10d). Each module 10 has a heat exchange section 11 and a machine room 12.

[0008] In this application, the Z direction, X direction, and Y direction of the Cartesian coordinate system are defined as follows: The Z direction is the vertical direction, and the +Z direction is the upward direction. The X direction and Y direction are horizontal directions. The X direction is the short side direction of the housing 13 of the machine room 12. The Y direction is the long side direction of the housing 13 of the machine room 12. In the X direction and Y direction, the direction approaching the center of the housing 13 may be referred to as the inside, and the direction away from the center of the housing 13 may be referred to as the outside.

[0009] The heat exchange unit 11 is disposed in the upper half of the module 10. The width of the heat exchange unit 11 in the X direction increases in the +Z direction. The machine room 12 is disposed in the lower half of the module 10. Some of the components of the refrigeration cycle device 1 are housed inside a housing 13 of the machine room 12. One end face of the machine room 12 in the Y direction is disposed inside one end face of the heat exchanger 11 in the Y direction. A water outlet 8a and a water inlet 8b, which will be described later, are disposed on one end face of the machine room 12 in the Y direction. This reduces the space required for the module 10. The width of the machine room 12 in the X direction increases in the -Z direction.

[0010] The width of the module 10 in the X direction is narrow in the center in the Z direction and wide at both ends in the Z direction. Multiple modules 10a-10d are arranged side by side in the X direction. A work space is formed between adjacent modules 10. Workers enter this work space to perform maintenance on the refrigeration cycle apparatus 1.

[0011] 2 is a conceptual diagram of a refrigeration cycle circuit. The refrigeration cycle device 1 has a compressor 2, a four-way valve 3, an air heat exchanger 4, an expansion device 5, a water heat exchanger 6, and a refrigerant flow path 7 that circulates a refrigerant through these components. The air heat exchanger 4 is disposed in a heat exchange section 11. The compressor 2, the four-way valve 3, the expansion device 5, and the water heat exchanger 6 are housed in a machine room 12.

[0012] The compressor 2 compresses the low-pressure gas refrigerant taken in to produce high-temperature, high-pressure gas refrigerant. An accumulator (not shown) may be disposed upstream of the compressor 2. The accumulator separates the gas-liquid two-phase refrigerant and supplies the gas refrigerant to the compressor 2.

[0013] The four-way valve 3 reverses the flow direction of the refrigerant in the refrigerant flow path 7 of the air heat exchanger 4, the expansion device 5, and the water heat exchanger 6. When the four-way valve 3 is in the state shown in Figure 2, the refrigerant discharged from the compressor 2 flows through the air heat exchanger 4, expansion device 5, and water heat exchanger 6 in that order. At this time, the air heat exchanger 4 functions as a condenser (heat radiator), and the water heat exchanger 6 functions as an evaporator (heat absorber).

[0014] When the four-way valve 3 switches from the state shown in Figure 2, the refrigerant discharged from the compressor 2 flows through the water heat exchanger 6, the expansion device 5, and the air heat exchanger 4 in that order. At this time, the water heat exchanger 6 functions as a condenser (heat radiator), and the air heat exchanger 4 functions as an evaporator (heat absorber).

[0015] The condenser dissipates heat from the high-temperature, high-pressure gas refrigerant discharged from the compressor 2, and converts the high-temperature, high-pressure gas refrigerant into a high-pressure liquid refrigerant. The expansion device 5 reduces the pressure of the high-pressure liquid refrigerant sent from the condenser, and converts the high-pressure liquid refrigerant into a low-temperature, low-pressure two-phase gas-liquid refrigerant. For example, the expansion device 5 is an expansion valve. The evaporator converts the gas-liquid two-phase refrigerant sent from the expansion device 5 into low-pressure gas refrigerant. The low-pressure gas refrigerant that has passed through the evaporator is taken into the compressor 2 described above.

[0016] In addition to the refrigerant flow path 7, the water heat exchanger 6 is also provided with a water flow path 8. The water heat exchanger 6 exchanges heat between the refrigerant and water. When the water heat exchanger 6 functions as an evaporator of the refrigerant, the water in the water flow path 8 is cooled. When the water heat exchanger 6 functions as a condenser of the refrigerant, the water in the water flow path 8 is heated. The water flow path 8 is connected to an air conditioner (not shown) or the like outside the module 10. Water flowing out from the air conditioner flows into the water flow path 8 of the module 10 via the water inlet 8b. Water flowing out from the water flow path 8 of the module 10 via the water outlet 8a flows into the air conditioner. The air conditioner uses the water cooled or heated by the water heat exchanger 6 to condition the air-conditioned area. A pump (not shown) that circulates the water in the water flow path 8 is installed inside or outside the machine room 12. In addition, the above-mentioned refrigeration cycle device 1 may be provided with multiple compressors 2, four-way valves 3, air heat exchangers 4, expansion devices 5, and water heat exchangers 6 that constitute the refrigeration cycle circuit in a single module 10, or may be provided with multiple refrigeration cycle circuits.

[0017] The module 10 in FIG. 1 is fixed to the installation location with bolts or the like. The module 10 has fixing portions 15 for fixing to the installation location. The outer shape of the housing 13 of the machine room 12 of the module 10 is rectangular in a plan view. The fixing portions 15 are arranged at the four corners of the housing 13. The lower end of the housing 13 is formed with protruding portions 16 that protrude on both sides in the X direction. The protruding portions 16 protrude outward in the X direction and are formed along the Y direction. The fixing portions 15 are arranged at both ends of the protruding portions 16 in the Y direction. Here, the width of the protrusion 16 in the X direction is preferably 3 cm or more, and for example, the width of the protrusion 16 in the X direction is formed to be approximately 5 cm to 8 cm. When the above-mentioned modules 10a-10d are arranged side by side in the X direction, the protrusions 16 of adjacent modules 10 are adjacent to each other, and the upper surfaces thereof can also be used as footholds for workers.

[0018] Fig. 3 is a perspective view of the fixing part. Fig. 4 is a perspective view of the fixing bracket. The fixing bracket 20 is fixed to the frame 14 of the housing 13 or the like to form the fixing part 15. The fixing bracket 20 is formed by pressing a steel plate material. The fixing part 15 has a first plate 21, a second plate 22, and a third plate 23. The first plate 21, the second plate 22, and the third plate 23 are part of the fixing bracket 20.

[0019] The first plate 21 is disposed at a corner of the housing 13. The first plate 21 is parallel to the XY plane. The normal to the first plate 21 is parallel to the Z direction. The first plate 21 has a first hole 21h into which an anchor bolt B (see FIG. 3) is inserted. The first hole 21h penetrates the first plate 21 in the thickness direction.

[0020] The second plate 22 is disposed inside the first plate 21 in the Y direction. The first plate 21 extends outward in the Y direction from the bottom edge 22b of the second plate 22. The second plate 22 rises vertically from the first plate 21. The second plate 22 is parallel to the Z direction. A normal to the second plate 22 intersects with the X and Y directions. The outer surface of the second plate 22 in the Y direction faces outward in the X direction. As shown in FIG. 4 , an acute angle θ is formed between the bottom edge 22b of the second plate 22 and the outer edge 21e of the first plate 21 in the X direction. The edge 21e of the first plate 21 is parallel to the Y direction. The first hole 21h of the first plate 21 is disposed inside the acute angle θ.

[0021] As shown in Fig. 3, the second plate 22 has a second hole 22h into which a sling such as a shackle 30 is inserted. The second hole 22h penetrates the second plate 22 in the thickness direction. A resin ring 24 is attached along the inner periphery of the second hole 22h. The resin ring 24 protects the paint on the surface of the fixing bracket 20. The first hole 21h and the second hole 22h are provided at the end of the protrusion 16 in the Y direction and are positioned below the upper surface of the protrusion 16.

[0022] FIG. 5 is a front view of a shackle. The shackle 30 is a metal fitting that connects a suspended load to a wire or the like. The shackle 30 has a U-shaped member 31 and a screw member 34. The U-shaped member 31 is U-shaped. Ring-shaped screw insertion portions 32 are formed on both ends of the U-shaped member 31. The screw member 34 is inserted into a central hole of the screw insertion portion 32. The screw member 34 closes the opening of the U-shaped member 31. The radius of the outer periphery of the screw insertion portion 32 is larger than the radius of the body portion 35 of the screw member 34.

[0023] 3, the screw member 34 of the shackle 30 is inserted into the second hole 22h. A wire (not shown) is inserted into the U-shaped member 31. The module 10 is suspended from the wire and the shackle 30 and placed at the installation location.

[0024] 4, the third plate 23 is disposed inside the second plate 22 in the Y direction. The third plate 23 is parallel to the YZ plane. As shown in FIG. 3, the third plate 23 is disposed along the outer periphery of the housing 13. The third plate 23 has a third hole 23h through which an electric wire connecting the adjacent modules 10a and 10b is inserted.

[0025] As shown in Figure 3, anchor bolts B may be used to secure the module 10. The anchor bolts B are installed in advance at the installation location of the module 10 by a box punching method or the like. The module 10 is placed at the installation location while being hung from shackles 30 inserted into the second holes 22h. The module 10 is lowered so that the anchor bolts B are inserted into the first holes 21h.

[0026] Consider a case where, of adjacent modules 10a and 10b, the second module 10b is installed first and the first module 10a is installed later. The shackle 30 used to lower the first module 10a may interfere with the housing 13 of the second module 10b. This makes it difficult to insert the anchor bolt B into the first hole 21h of the first module 10a. This makes it impossible to install the first module 10a. For example, if the shackle 30 is attached to the third hole 23h of the first module 10a, the shackle 30 is likely to interfere with the second module 10b. In particular, if the spacing between the adjacent modules 10a and 10b is narrow to save space, the shackle 30 is likely to interfere with the second module 10b.

[0027] The third plate 23 having the third hole 23h is arranged along the outer periphery of the housing 13. In contrast, the second plate 22 having the second hole 22h is arranged inside the outer periphery of the housing. This makes it less likely that the shackle 30 inserted into the second hole 22h of the first module 10a will interfere with the second module 10b. The anchor bolt B can be easily inserted into the first hole 21h of the first module 10a. This makes it easy to install the refrigeration cycle apparatus 1. It also makes it possible to narrow the gap between adjacent modules 10a, 10b, thereby realizing space savings.

[0028] To firmly secure the module 10, the first hole 21h is disposed at a corner of the housing 13. To stably lift the module 10, the second hole 22h is also disposed near a corner of the housing 13. If the shackle 30 inserted into the second hole 22h interferes with the anchor bolt B inserted into the first hole 21h, it will be impossible to install the module 10. For example, if the second plate 22 having the second hole 22h is parallel to the XZ plane, the shackle 30 inserted into the second hole 22h is likely to interfere with the anchor bolt B.

[0029] Positioning the second hole 22h above the upper end of the anchor bolt B avoids interference between the shackle 30 and the anchor bolt B. However, forming the second hole 22h by installing a new metal fitting separate from the fixing metal fitting 20 increases costs. As mentioned above, workers must enter the work space between adjacent modules 10. Extending the fixing metal fitting 20 upward to form the second hole 22h would interfere with the work.

[0030] Figure 6 is a plan cross-sectional view taken along line VI-VI in Figure 4. A normal line of the first plate 21 passing through the center of the first hole 21h is defined as a first normal line 21c. A normal line of the second plate 22 passing through the center of the second hole 22h is defined as a second normal line 22c. The maximum diameter of the anchor bolt B inserted into the first hole 21h is the diameter of the first hole 21h. The radius of the first hole 21h is defined as a first radius 21r. The maximum diameter of the body portion 35 of the screw member 34 of the shackle 30 inserted into the second hole 22h is the diameter of the second hole 22h. The radius of the second hole 22h is defined as a second radius 22r. The distance D between the first normal line 21c and the second normal line 22c is greater than the sum of the first radius 21r and the second radius 22r.

[0031] Let us consider a case where the distance D between the first normal line 21c and the second normal line 22c is equal to the sum of the first radius 21r and the second radius 22r. In this case, in FIG. 6, a straight line L passing through the end of the second hole 22h is tangent to the outer periphery of the first hole 21h. The second plate 22 is arranged perpendicular to the straight line L. The second hole 22h is formed in this second plate 22. In this way, in FIG. 6, the second plate 22 is arranged perpendicular to the straight line tangent to the outer periphery of the first hole 21h, and the second hole 22h is formed in this second plate 22.

[0032] As described above, the distance D between the first normal 21c of the first plate 21 passing through the center of the first hole 21h and the second normal 22c of the second plate 22 passing through the center of the second hole 22h is greater than the sum of the first radius 21r of the first hole 21h and the second radius 22r of the second hole 22h.

[0033] This creates a gap between the screw member 34 of the shackle 30 inserted into the second hole 22h and the anchor bolt B inserted into the first hole 21h. Interference between the screw member 34 of the shackle 30 and the anchor bolt B is avoided. If the screw insertion portion 32 of the shackle 30 and the anchor bolt B come close to each other, the shackle 30 can be moved parallel to the second normal line 22c. This separates the screw insertion portion 32 of the shackle 30 from the anchor bolt B, preventing interference between the shackle 30 and the anchor bolt B. As a result, insertion of the anchor bolt B into the first hole 21h of the first module 10a is completed. This allows the refrigeration cycle apparatus 1 to be easily installed.

[0034] The outer shape of the housing 13 is rectangular in plan view. The first hole 21h is located at a corner of the housing 13, on the inside of the acute angle θ formed by the long side of the housing 13 and the bottom side 22b of the second plate 22. By inclining the second plate 22 at an acute angle θ with respect to the Y direction, even when the first hole 21h and the second hole 22h are provided within a narrow area, they can be arranged so as to avoid each other's hole diameter range, resulting in a refrigeration cycle device 1 that is easy to work with and install while having a structure with the necessary strength and size. Furthermore, by setting the acute angle θ to 40° to 80°, the width of the protrusion 16 can be kept to the minimum necessary, while making the first hole 21h and the second hole 22h capable of using a general-purpose shackle 30 and anchor bolt B.

[0035] The first hole 21h is located at a corner of the housing 13, inside the acute angle θ formed by the long side of the housing 13 and the bottom side 22b of the second plate 22. This positions the second hole 22h near the corner of the housing 13. By inserting the shackle 30 into this second hole 22h, the module 10 can be stably lifted. The shackle 30 inserted into the second hole 22h is arranged straddling the inside and outside of the housing 13. The shackle 30 does not protrude much outside the housing 13. Even if the gap between adjacent modules 10 is narrow, the shackle 30 is unlikely to interfere with the adjacent module 10. The arrangement space for the shackle 30 inside the housing 13 is small. The housing 13 is made smaller.

[0036] The machine rooms 12 of the modules 10 are arranged side by side in the X direction. Even when the distance between the machine rooms 12 of the adjacent modules 10 is narrow, the shackle 30 is unlikely to interfere with the adjacent machine room 12. This allows the refrigeration cycle device 1 to be made smaller. A protrusion 16 is formed at the lower end of the housing 13, protruding outward in the X direction and extending along the Y direction. A first hole 21h and a second hole 22h are provided at the end of the protrusion 16 in the Y direction and are located below the upper surface of the protrusion 16. The shape of the fixing metal fittings 20 does not extend above the protrusion 16, and there are no protruding parts on the upper surface of the protrusion 16. Therefore, even if the upper surface of the protrusion 16 is used as a foothold for workers, it does not get in the way of work, preventing a decrease in workability and further improving work safety. With this configuration, space efficiency is not reduced when multiple modules 10 are installed adjacent to each other in a limited space. A refrigeration cycle device 1 can be provided that is easy to install, maintain, and replace equipment after installation.

[0037] The refrigeration cycle apparatus 1 of the embodiment is a heat source machine including a water heat exchanger 6, and has a water outlet 8a and a water inlet 8b. In contrast, the refrigeration cycle apparatus 1 may be an outdoor machine not including a water heat exchanger 6, and may have a refrigerant inlet and a refrigerant outlet. In the embodiment, the shackle 30 is inserted into the second hole 22h. However, a suspension device other than the shackle 30 may be inserted into the second hole 22h.

[0038] According to at least one of the embodiments described above, the distance D between the first normal line 21c and the second normal line 22c is greater than the sum of the first radius 21r and the second radius 22r, which allows the refrigeration cycle apparatus 1 to be easily installed.

[0039] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention described in the claims and their equivalents. [Explanation of symbols]

[0040] B...anchor bolt, D...distance, θ...acute angle, 1...refrigeration cycle device, 12...machine room, 13...casing, 16...protrusion, 21...first plate, 21c...first normal (normal), 21h...first hole, 22...second plate, 22b...base, 22c...second normal (normal), 22h...second hole, 30...shackle (hanging device).

Claims

1. a machine room housing the components; a first plate provided in a housing of the machine room and having a first hole formed therein into which an anchor bolt is inserted; a second plate provided inside the outer periphery of the housing and having a second hole formed therein through which a hanging tool is inserted, a distance between a normal line of the first plate that passes through a center of the first hole and a normal line of the second plate that passes through a center of the second hole is greater than a sum of a radius of the first hole and a radius of the second hole; The housing has a rectangular outer shape in a plan view, the first hole is located at a corner of the housing, on the inside of an acute angle formed by a long side of the housing and a bottom side of the second plate; Refrigeration cycle equipment.

2. a protrusion formed at a lower end of the housing, the protrusion protruding outward in a short-side direction of the housing and extending along a long-side direction of the housing; The first hole and the second hole are provided at the end of the protrusion in the longitudinal direction and are arranged below the upper surface of the protrusion. The refrigeration cycle device according to claim 1.

3. The machine chambers are arranged side by side in the short side direction of the housing. The refrigeration cycle device according to claim 1 or 2.

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