Module

Abstract

This module comprises: a housing that forms an outer shell; and an instrument group disposed inside the housing. The instrument group includes a control box in which a control device is housed. The control box is disposed on the forefront face of the housing and is configured to open the interior of the housing when moved outside the housing and turned by a first movable part.

Description

Module

[0001] The present disclosure relates to a module having equipment including a compressor and a heat exchanger.

[0002] Conventionally, a module containing elements including a refrigeration cycle device group, such as that disclosed in Patent Document 1, has been known. The element includes a device group including a compressor, a controller, two water heat exchangers, a pressure reducing device, and various sensors, refrigerant piping connecting the devices, wiring used in the device group, and a device group support base on which the device group is placed. Inside the housing, the controller, compressor, and two water heat exchangers are arranged in this order from the front to the rear, with the front side blocked by the controller. The device group support base is installed on an element entry / exit guide provided inside the housing and is configured to be pulled out to the front side of the housing. Maintenance of the module's device group, refrigerant piping, and wiring is performed by pulling the device group support base out to the front side of the housing, exposing the device group and other components. Modules may be installed side by side in the horizontal direction or stacked vertically. Vertically adjacent modules are connected, for example, by bolts or the like.

[0003] Patent No. 5660873

[0004] In the module disclosed in Patent Document 1, in order to pull out the equipment group support stand to the front side of the housing, it is necessary to remove the water pipes connected to the water heat exchanger and drain the water. For example, even for minor work such as replacing electrical components, the front side of the housing is blocked by the controller, so the equipment group support stand must be pulled out and exposed to the outside. Furthermore, because the equipment group is heavy, the task of pulling out the equipment group support stand is a burden for the worker.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a module that allows maintenance work on some of the equipment, refrigerant piping, and wiring to be performed without pulling out the support base.

[0006] The module according to the present disclosure comprises a housing forming an outer shell and a group of devices arranged inside the housing, the group of devices including a control box housing a control device inside, the control box being arranged at the very front of the housing and configured to move and rotate to the outside of the housing by a first movable part, thereby opening up the inside of the housing.

[0007] According to the present disclosure, the control box is moved and rotated outside the housing to open the inside of the housing, so that maintenance work on some of the equipment, refrigerant piping, and wiring can be performed without pulling out the support base.

[0008] 13 is a perspective view showing the appearance of a module according to an embodiment. FIG. 14 is a perspective view showing the internal structure of a module according to an embodiment. FIG. 15 is an explanatory diagram schematically showing the internal structure of a side surface side of a module according to an embodiment. FIG. 16 is an explanatory diagram schematically showing the internal structure of a front surface side of a module according to an embodiment. FIG. 17 is a refrigerant circuit diagram of a module according to an embodiment. FIG. 18 is an explanatory diagram partially showing a state in which a control box is attached to a first movable part of a module according to an embodiment. FIG. 19 is an explanatory diagram partially showing a state in which a control box is slid by the first movable part of a module according to an embodiment. FIG. 19 is an explanatory diagram partially showing a state in which a control box is rotated by the first movable part of a module according to an embodiment. FIG. 19 is a perspective view showing a state in which a control box is rotated by the first movable part of a module according to an embodiment. FIG. 19 is a front view showing a state in which a control box is rotated by the first movable part of a module according to an embodiment. FIG. 19 is a front view showing a state in which a control box is attached to the first movable part of a module according to an embodiment. FIG. 19 is an enlarged view showing part A of FIG. 13 from the bottom side. FIG. 19 is an enlarged view showing part B of FIG. FIG. 1 is an explanatory diagram showing a modified example of a holding member in a module according to an embodiment. FIG. 2 is a perspective view showing a fixing bracket of a module according to an embodiment. FIG. 3 is an explanatory diagram showing a module according to an embodiment in a state where a power terminal block and a control device are connected by a power line. FIG. 4 is a perspective view of a module according to an embodiment in a state where the support base has been moved to expose a group of devices to the outside of the housing. FIG. 5 is an explanatory diagram showing a module according to an embodiment as viewed from the front side, schematically showing a second movable part. FIG. 6 is an explanatory diagram showing a state where a plurality of modules according to an embodiment are installed in the vertical and horizontal directions. FIG. 7 is an explanatory diagram showing a state where a plurality of modules according to an embodiment are installed in the vertical and horizontal directions, with the control box rotated to open the interior of the housing. FIG. 8 is an explanatory diagram showing a work space when a plurality of modules according to an embodiment are installed in the horizontal direction.

[0009] Hereinafter, embodiments will be described with reference to the drawings. In each drawing, identical or corresponding parts are denoted by the same reference numerals, and their description will be omitted or simplified as appropriate. Furthermore, the shape, size, and arrangement of the configurations shown in each drawing may be changed as appropriate within the scope of this disclosure. Furthermore, to facilitate understanding, terms indicating directions (e.g., up, down, left, right, etc.) are used as appropriate, but these notations are for the convenience of explanation and do not limit the arrangement, direction, or orientation of devices, instruments, or components, etc.

[0010] 1 is a perspective view showing the appearance of a module 100 according to an embodiment. FIG. 2 is a perspective view showing the internal structure of the module 100 according to an embodiment. FIG. 3 is an explanatory diagram showing a schematic internal structure of the side surface of the module 100 according to an embodiment. FIG. 4 is an explanatory diagram showing a schematic internal structure of the front surface of the module 100 according to an embodiment. FIG. 5 is a refrigerant circuit diagram of the module 100 according to an embodiment.

[0011] The module 100 according to this embodiment is, for example, a water-cooled chiller. As shown in FIGS. 1 to 4 , the module 100 includes a housing 1 forming an outer shell, a group of devices 2 arranged inside the housing 1, piping and wiring, and a support base 3 on which the group of devices 2 and the like are placed. The group of devices 2 includes, for example, two compressors 20, a first water heat exchanger 21, two pressure reducing devices 22, a second water heat exchanger 23, a control device 24, a temperature sensor 25, a pressure sensor 26, and a power terminal block 8. As shown in FIGS. 2 and 3 , the control device 24 is housed inside a rectangular parallelepiped control box 4 and is housed inside the housing 1. The group of devices 2 is not limited to these components and may include other components.

[0012] As shown in FIG. 5 , the module 100 has a refrigerant circuit 200 in which a compressor 20, a first water heat exchanger 21, a pressure reducing device 22, and a second water heat exchanger 23 are connected by refrigerant piping 27. The refrigerant circuit 200 is connected to a coolant circuit 300 through which coolant flows as a first medium, and a chilled water circuit 400 through which chilled water flows as a second medium. The module 100 shown in FIG. 5 has, as an example, two refrigerant circuits 200. The two refrigerant circuits 200 share one first water heat exchanger 21 and one second water heat exchanger 23. The module 100 may be configured to have one refrigerant circuit 200, or three or more refrigerant circuits 200.

[0013] The housing 1 is a rectangular parallelepiped box made of sheet metal, as shown in Fig. 1. As shown in Figs. 1 and 2, the housing 1 is configured such that a front panel 11, left and right side panels 12, and a top panel 13 are detachably attached to a frame 10 that forms a frame body, using joining members such as screws.

[0014] The compressor 20 compresses the drawn refrigerant and discharges it. The compressor 20 is driven via a compressor inverter drive device (not shown) or the like. The compressor 20 can change the capacity of the compressor 20, which is the amount of refrigerant delivered per unit time, by arbitrarily changing the drive frequency based on instructions from the control device 24.

[0015] The first water heat exchanger 21 forms a flow path of the refrigerant circuit 200 and a flow path of the coolant circuit 300. In other words, the first water heat exchanger 21 forms a component of the refrigerant circuit 200 and a component of the coolant circuit 300. A refrigerant pipe 27 of the refrigerant circuit 200 and a coolant pipe 300a of the coolant circuit 300 are connected to the first water heat exchanger 21. The first water heat exchanger 21 functions as a condenser, and exchanges heat between the refrigerant flowing in from the compressor 20 and the coolant, condensing the refrigerant to liquefy or convert it into a gas-liquid two-phase state, and heating the coolant in the coolant circuit 300.

[0016] The pressure reducing device 22 adjusts the pressure of the refrigerant flowing out from the first water heat exchanger 21, for example, by changing the opening degree. The pressure reducing device 22 is configured with an electronic expansion valve that changes the opening degree based on an instruction from the control device 24.

[0017] The second water heat exchanger 23 serves as a flow path of the refrigerant circuit 200 and a flow path of the chilled water circuit 400. In other words, the second water heat exchanger 23 serves as a component of the refrigerant circuit 200 and a component of the chilled water circuit 400. The refrigerant pipe 27 of the refrigerant circuit 200 and the chilled water pipe 400a of the chilled water circuit 400 are connected to the second water heat exchanger 23. The second water heat exchanger 23 functions as an evaporator, and exchanges heat between the refrigerant flowing in from the pressure reducing device 22 and water, evaporating the refrigerant and cooling the water in the chilled water circuit 400.

[0018] The refrigerant circuit 200 is also provided with a plurality of temperature sensors 25 that detect the temperature of the refrigerant flowing through the refrigerant pipe 27. Each temperature sensor 25 detects the temperature of the refrigerant discharged from the compressor 20, the temperature of the refrigerant drawn into the compressor 20, and the temperature of the refrigerant condensed in the first water heat exchanger 21. These temperature sensors 25 are thermistors, for example. The refrigerant circuit 200 is also provided with a pressure sensor 26 that detects the pressure of the refrigerant flowing through the refrigerant pipe 27. The pressure sensor 26 detects, for example, the pressure of the high-pressure refrigerant discharged from the compressor 20 and the pressure of the low-pressure refrigerant drawn into the compressor 20.

[0019] 5, the refrigerant circuit 200 also has an injection circuit 28 that branches off from the refrigerant piping 27 between the first water heat exchanger 21 and the pressure reducing device 22 and is connected to the compressor 20. The injection circuit 28 is provided with a control valve 29 that adjusts the flow rate of the refrigerant flowing through the injection circuit 28. The control valve 29 is configured, for example, by an electronic expansion valve or the like.

[0020] The control device 24 is configured by a computer including a memory for storing data and programs required for control and a CPU for executing the programs, dedicated hardware such as an ASIC or FPGA, or both. The control device 24 controls each part of the refrigerant circuit 200 based on information detected by the temperature sensor 25 or the pressure sensor 26, etc., and instructions from a remote control (not shown).

[0021] The above-described refrigerant circuit 200 is merely an example, and is not intended to be limiting. The refrigerant circuit 200 may include other components, or may have a configuration in which the injection circuit 28 is omitted, for example.

[0022] Next, the specific structure of the module 100 will be described with reference to FIGS. 1 to 4 and based on FIGS. 6 to 20. FIG. 6 is an explanatory diagram partially illustrating the module 100 according to the embodiment, with the control box 4 attached to the first movable part 5. FIG. 7 is an explanatory diagram partially illustrating the module 100 according to the embodiment, with the control box 4 slid by the first movable part 5. FIG. 8 is an explanatory diagram partially illustrating the module 100 according to the embodiment, with the control box 4 rotated by the first movable part 5. FIG. 9 is a perspective view of the module 100 according to the embodiment, with the control box 4 rotated by the first movable part 5. FIG. 10 is a front view of the module 100 according to the embodiment, with the control box 4 rotated by the first movable part 5. FIG. 11 is a front view of the control box 4 of the module 100 according to the embodiment. FIG. 12 is a front view of the module 100 according to the embodiment, with the control box 4 attached to the first movable part 5. Fig. 13 is a perspective view showing the first movable part 5 of the module 100 according to the embodiment. Fig. 14 is an enlarged view showing part A of Fig. 13 from below. Fig. 15 is an enlarged view showing part B of Fig. 9. Fig. 16 is an explanatory diagram showing a modified example of the holding member 6 of the module 100 according to the embodiment. Fig. 17 is a perspective view showing the fixing bracket 7 of the module 100 according to the embodiment. Fig. 18 is an explanatory diagram showing the module 100 according to the embodiment in a state where the power terminal block 8 and the control device 24 are connected by the power line 81.

[0023] As shown in Fig. 1, the module 100 has a housing 1 that forms an outer shell and accommodates a device group 2, piping, wiring, and a support base 3. As shown in Figs. 2 to 4, inside the housing 1, a control box 4, two compressors 20, and a pressure reducing device 22 are arranged in this order from the front side to the rear side of the housing 1, and a first water heat exchanger 21 and a second water heat exchanger 23 are arranged side by side on the left and right behind the pressure reducing device 22. The device group 2, piping, and wiring are accommodated inside the housing 1 while being placed on the upper surface of the support base 3.

[0024] First, the configuration of the control box 4 will be described. As shown in Figures 2 and 3, the control box 4 is disposed at the frontmost side of the housing 1 so as to block the front of the interior of the housing 1. As shown in Figures 6 and 7, the control box 4 is configured to move from the interior to the exterior of the housing 1 by a first movable part 5, and to swing like a single swing door, as shown in Figures 8 to 10, to open the interior of the housing 1. As shown in Figure 11, a mounting bracket 40 for attaching to the first movable part 5 is attached to one side of the control box 4 facing the side panel 12 of the housing 1. As shown in Figures 11 and 12, the mounting bracket 40 has a through-hole 40a formed therein for attaching a joining member 41 such as a screw.

[0025] As shown in FIG. 9 , the first movable part 5 is disposed inside the housing 1 facing one of the side panels 12. As shown in FIG. 13 , the first movable part 5 has a rail structure 50 fixed inside the housing 1 and a guide structure 55 movable along the rail structure 50. The rail structure 50 has a flat, substantially rectangular rail main body 51, a rail portion 52a provided along the upper edge of the rail main body 51, and a rail portion 52b provided along the lower edge of the rail main body 51. The rail main body 51 is disposed with its flat surface facing the inner surface of one of the side panels 12 of the housing 1. As shown in FIGS. 7 and 8 , the rail main body 51 has an L-shaped bent portion 53 protruding toward the rear side of the housing 1. The bent portion 53 has a first bent portion 53a that protrudes inward from the side edge of the rail main body 51 on the rear side of the housing 1, and a second bent portion 53b that protrudes from the edge of the first bent portion 53a toward the rear side of the housing 1. The first bent portion 53a is provided to restrict movement of the guide structure 55 on the rear side of the housing 1 and to fix the position of the guide structure 55. A through hole 53c is formed in the first bent portion 53a along the vertical direction, through which a joining member can be passed to fix the guide structure 55. The second bent portion 53b is provided to form a path for the power line 81 (described below) that is wired inside the housing 1. A through hole 53d is formed in the second bent portion 53b, through which a member for fixing the power line 81 can be passed.

[0026] The rail portions 52a and 52b are provided so as to extend along from the front side to the rear side of the housing 1. In the rail portions 52a and 52b, a slit 54 for sliding the guide structure portion 55 is formed as a surrounded through-hole along from the front side to the rear side of the housing 1.

[0027] 13, the guide structure 55 has an elongated guide body 56 provided along the rail body 51 from the upper end to the lower end, and guide portions 57 provided at the upper and lower ends of the guide body 56 and sliding within the slits 54 of the rail portions 52a and 52b. The guide body 56 is a metal fitting formed into a concave shape by a flat web 56a disposed opposite the inner surface of the rail body 51, and flat first flange portions 56b and flat second flange portions 56c formed to protrude from both left and right end edges of the web 56a toward the inner surface of the rail body 51.

[0028] As shown in FIG. 12 , the first flange portion 56b is provided for mounting the control box 4. As shown in FIG. 13 , the first flange portion 56b has through holes 56g formed in the vertical direction, through which connecting members 41, such as screws, can pass. As shown in FIG. 12 , the control box 4 is mounted to the guide main body 56 by butting the mounting bracket 40 against the first flange portion 56b and connecting members 41, such as screws, through the through holes 40a and 56g. The control box 4 can be easily removed from the guide main body 56 by removing the connecting members 41. Two rectangular cutouts 56h are formed in the vertical direction in the first flange portion 56b. The cutouts 56h are formed as working spaces when fixing or releasing the guide structure 55 to the rear side of the housing 1. As shown in FIG. 11 , the mounting bracket 40 also has rectangular cutouts 40b formed in positions corresponding to the cutouts 56h. The cutout portion 40b is formed as a working space when the guide structure portion 55 is fixed to the rear side of the housing 1 or when the fixed state is released.

[0029] As shown in FIG. 6 , the second flange portion 56c abuts against the first bent portion 53a to restrict movement of the guide structure portion 55 and is provided to fix the guide structure portion 55 to the rear side of the housing 1 at a position where the control box 4 is housed inside the housing 1. As shown in FIG. 8 , the second flange portion 56c has two through holes 56f formed in the vertical direction, through which connecting members 58 such as screws can be passed. The guide structure portion 55 is fixed to the rear side of the housing 1 by butting the second flange portion 56c against the first bent portion 53a of the bent portion 53 and joining the guide structure portion 55 by passing connecting members 58 such as screws through the through holes 53c and 56f. The fixed state of the guide structure portion 55 can be released by removing the connecting members 58, allowing the rail portions 52a and 52b to slide. The joining member 58 can be fixed and released from this fixed state by utilizing the notch 56h of the first flange portion 56b and the notch 40b of the mounting bracket 40.

[0030] 13 and 14, the guide body 56 further includes an upper flange 56d that protrudes upward from the upper edge of the web 56a toward the upper rail 52a, and a lower flange 56e that protrudes downward from the lower edge of the web 56a toward the lower rail 52b. The upper flange 56d and the lower flange 56e are each provided with a guide portion 57.

[0031] As shown in FIG. 14 , the guide portion 57 includes a stopper member 57a that is inserted into the slits 54 of the rail portions 52a and 52b and slides within the slits 54, and a fixing member 57b that attaches the stopper member 57a to the rail portions 52a and 52b. The stopper member 57a is cylindrical and protrudes toward the slits 54 from the lower surface of the upper flange portion 56d and the upper surface of the lower flange portion 56e, respectively. The fixing member 57b is, for example, an E-ring that is larger than the width of the slits 54. The E-ring is an E-type retaining ring made of stainless steel or the like. The fixing member 57b is attached to the tip of the stopper member 57a inserted into the slits 54 and prevents the stopper member 57a from slipping out of the upper flange portion 56d and the lower flange portion 56e. The guide structure 55 is configured so that the stopper member 57a slides within the slits 54 of the rail portions 52a and 52b, causing the guide main body 56 to move, and the control box 4 attached to the guide main body 56 is moved so as to be exposed to the outside of the housing 1.

[0032] As shown in Fig. 7, the guide structure 55 slides the control box 4 to expose it outside the housing 1 when the stopper member 57a moves to the front ends of the rail portions 52a and 52b, and then, as shown in Figs. 8 to 10, the stopper member 57a rotates within the slit 54 to rotate the control box 4 like a swinging door. The guide structure 55 is configured so that when the control box 4 is rotated 90 degrees from the state in which it is exposed outside the housing 1, the web 56a of the guide main body 56 abuts against the side edge of the rail main body 51, restricting the rotation of the control box 4. In other words, the guide structure 55 is configured to rotate the sliding control box 4 in a range of 0 to 90 degrees.

[0033] 9 and 15, the control box 4 is provided with a holding member 6 that fixes the position after being rotated by the first movable part 5. The holding member 6 rotates together with the control box 4 in accordance with the rotation of the guide structure 55. The holding member 6 is, for example, a concave metal fitting. The upper part of the holding member 6 is rotatably attached to the frame 10 that forms the top surface of the housing 1 via a joint member 60. The lower part of the holding member 6 is attached and fixed to the handle portion 42 of the control box 4 provided on the top surface of the control box 4 by a joint member 61.

[0034] The holding member 6 is not limited to a configuration in which it is attached to the frame 10 of the housing 1 and the handle portion 42 of the control box 4, but may be attached to other portions. Furthermore, the holding member 6 is not limited to the configurations shown in Figs. 9 and 15. For example, as shown in Fig. 16, the holding member 6 may be a hanging cord that connects the frame 10 that forms the top surface of the housing 1 and the handle portion 42, or may have other configurations. In short, the holding member 6 may have any configuration as long as it is capable of fixing the position of the rotated control box 4.

[0035] Next, the configuration of the equipment group 2 other than the control box 4, the piping and wiring, and the support base 3 will be described. As shown in Fig. 4, the two compressors 20 are arranged side by side when viewed from the front side. The pressure reducing device 22 is provided at a height above one of the compressors 20 so as to be visible when the control box 4 is rotated to open the front of the housing 1 and the housing 1 is viewed from the front side. Note that the arrangement of the pressure reducing device 22 is not limited to that shown in Fig. 4, and it may be provided in another position as long as it is visible when the housing 1 is viewed from the front side.

[0036] 10, the injection circuit 28 and the control valve 29 are disposed above one of the compressors 20 and are provided at a height position that allows them to be seen when the control box 4 is rotated to open the front of the housing 1. The injection circuit 28 and the control valve 29 are not limited to the arrangement shown in FIG. 10, and may be provided at other positions as long as they allow them to be seen when the housing 1 is viewed from the front.

[0037] The temperature sensors 25 are attached to the refrigerant pipes 27, respectively, and are provided in positions that are visible when the control box 4 is rotated to open the front of the housing 1, as shown in Figures 3 and 4. As an example, the temperature sensors 25 are provided above the compressor 20 and on the left and right of the compressor 20 when the housing 1 is viewed from the front. The temperature sensors 25 are not limited to the arrangement shown in Figures 3 and 4, and may be provided in other locations as long as they are visible when the housing 1 is viewed from the front. All or only some of the temperature sensors 25 may be provided in positions that are visible when the housing 1 is viewed from the front.

[0038] As shown in FIGS. 3 and 4 , the pressure sensor 26 is disposed above the compressor 20 at a height position that allows it to be seen when the control box 4 is rotated to open the front of the housing 1. For example, the pressure sensor 26 is disposed between the compressor 20 and the second water heat exchanger 23 when the housing 1 is viewed from the side, and above one of the compressors 20 when the housing 1 is viewed from the front. As shown in FIGS. 10 and 17 , the pressure sensors 26 are attached to a single fixing bracket 7 and are detachably attached to the other equipment group 2. For example, the fixing bracket 7 is made of sheet metal. The fixing bracket 7 has multiple through holes 70 formed therein for passing through connecting members such as screws. For example, the other equipment group 2 is the second water heat exchanger 23. A sheet metal is fixed to the second water heat exchanger 23 to support the fixing bracket 7. The fixing bracket 7 is attached to the second water heat exchanger 23 by joining it to a metal plate fixed to the second water heat exchanger 23 with joining members such as screws. When removing the pressure sensor 26, the fixing bracket 7 is removed from the second water heat exchanger 23. Note that the location where the fixing bracket 7 is attached is not limited to the second water heat exchanger 23, and it may be elsewhere.

[0039] 3 and 4, the pressure sensors 26 may be provided in other locations as long as they are visible when viewed from the front of the housing 1. All or only some of the multiple pressure sensors 26 may be provided in locations that are visible when viewed from the front of the housing 1. The pressure sensors 26 may also be provided inside the housing 1 without being attached to the fixing bracket 7.

[0040] Furthermore, as shown in FIG. 18 , a power terminal block 8 is provided between the top surface of the control box 4 and the top surface of the housing 1. The power terminal block 8 is connected to an external power supply (not shown) via a power line 80. The power terminal block 8 is also connected to the control device 24 housed in the control box 4 via a power line 81. With the control device 24 and the power terminal block 8 connected via the power line 81, the control box 4 moves and rotates outside the housing 1 using the first movable part 5 to open the interior of the housing 1. This eliminates the need to disconnect the power line 81, improving the workability of maintenance work. As shown in FIGS. 7 to 9 , the power line 81 is arranged in a path formed by an L-shaped bent portion 53 protruding from the rail main body 51 toward the rear side of the housing 1, and is fixed by a member provided in a through hole 53 d formed in the second bent portion 53 b.

[0041] Fig. 19 is a perspective view of module 100 according to the embodiment, showing a state in which support base 3 has been moved to expose device group 2 to the outside of housing 1. Fig. 20 is an explanatory diagram showing module 100 according to the embodiment as viewed from the front side, schematically showing second movable part 9.

[0042] As an example, the support base 3 has a concave shape with side walls formed along the periphery of a flat support surface. As shown in Fig. 19 , the support base 3 is configured to move in the front-to-rear direction of the housing 1 by a second movable part 9 provided inside the housing 1, thereby exposing the device group 2 to the outside of the housing 1. Note that the support base 3 is not limited to a concave shape and may have other shapes as long as it is configured to allow the device group 2 to be placed thereon.

[0043] As shown in FIG. 18 , a support plate 30 for fixing the support base 3 is provided on the front surface of the support base 3. The support plate 30 is, for example, L-shaped. One side of the L-shape of the support plate 30 is attached to the front surface of the support base 3 with a connecting member 31 such as a screw, and the other side of the L-shape is attached to a metal fitting disposed on the upper surface of the support base 3 and attached to the side surface of the housing 1 with a connecting member 32 such as a screw. Note that the shape of the support plate 30 is not limited to an L-shape and may be other shapes. Furthermore, the support plate 30 may be attached to another part with a connecting member such as a screw as long as it can fix the support base 3. Furthermore, the support plate 30 is not necessarily required and may be omitted if the support base 3 is fixed by the structure of the housing 1 or the like.

[0044] As shown in FIGS. 19 and 20 , the second movable part 9 is composed of a pair of metal plates 90 each having an L-shaped cross section. The metal plates 90 are arranged along the left and right side surfaces of the housing 1 so as to extend from the front side to the rear side of the housing 1. One outer surface of each L-shaped metal plate 90 is fixed to the inner surface of the side panel 12 of the housing 1, and the other outer surface of the L-shaped metal plate 90 is fixed to the inner bottom surface of the housing 1. Note that the second movable part 9 is not limited to the configuration of a pair of metal plates 90, and may have other configurations as long as the support base 3 is moved in the front-rear direction of the housing 1 and the device group 2 is exposed to the outside of the housing 1. Furthermore, the means for fixing each metal plate 90 to the housing 1 may have other configurations.

[0045] To move the support base 3 to expose the equipment group 2 outside the housing 1, first, the front panel 11 of the housing 1 is removed from the housing 1 to expose the control box 4, and then the control box 4 is opened to expose the control device 24. The control device 24 can be exposed by removing the front panel of the control box 4. Then, the wiring and ground wire of the compressor 20 connected to the control device 24 are disconnected, and the control box 4 is removed from the first movable part 5. The control box 4 is removed from the first movable part 5 by removing the four joint members 41 connected to the guide structure 55. Next, the support metal plate 30 fixed to the front surface of the support base 3 is removed. The support metal plate 30 can be removed from the support base 3 by removing the joint members 31 joined to the front surface of the support base 3 and the joint members 32 joined to metal fittings attached to the side surfaces of the housing 1. Finally, the cooling water pipe 300a connected to the first water heat exchanger 21 is removed, and the cold water pipe 400a connected to the second water heat exchanger 23 is removed, and the water is drained from each pipe. Then, the support base 3 is pulled out to the front side, so that the equipment group 2 can be exposed to the outside of the housing 1. Note that the above-described procedure is an example, and the order of the operations may be reversed, or some operations may be omitted.

[0046] As shown in FIGS. 9 and 10 , the module 100 according to this embodiment allows the control box 4 to be moved and rotated outside the housing 1 by the first movable part 5, thereby opening the interior of the housing 1 and enabling maintenance work on the temperature sensor 25, pressure reducing device 22, pressure sensor 26, injection circuit 28, control valve 29, and compressor 20. For example, the temperature sensor 25 can be removed from the housing 1 by disconnecting its wiring. The pressure reducing device 22 can be removed from its wiring for coil replacement. The pressure sensor 26 can be removed from the housing 1 by disconnecting its fixing bracket 7 and removing it together with the fixing bracket 7 for maintenance. The compressor 20 can be removed from the housing 1 by unbrazing it. In other words, maintenance work on the equipment group 2, etc. can be performed without pulling out the support base 3. This eliminates the need to pull out the heavy support base 3 or drain the cooling water pipes 300a and the chilled water pipes 400a, thereby reducing the workload on workers and reducing work costs.

[0047] 19 , in the module 100 according to this embodiment, the support base 3 is moved by the second movable part 9 to expose the equipment group 2 to the outside of the housing 1, thereby enabling maintenance work on the pressure reducing device 22, the first water heat exchanger, and the second water heat exchanger. For example, the pressure reducing device 22 can be removed from the housing 1 and its main body can be replaced by unbrazing it. The first water heat exchanger 21 and the second water heat exchanger 23 can be removed from the housing 1 and subjected to maintenance by unbrazing it and removing the cooling water pipe 300 a and the cold water pipe 400 a.

[0048] Fig. 21 is an explanatory diagram schematically showing a state in which a plurality of modules 100 according to an embodiment are installed in the left-right and up-down directions. Fig. 22 is an explanatory diagram schematically showing a state in which a plurality of modules 100 according to an embodiment are installed in the up-down and left-right directions and the control box 4 is rotated to open the interior of the housing 1. Fig. 23 is an explanatory diagram schematically showing a work space 101 in which a plurality of modules 100 according to an embodiment are installed in the left-right direction.

[0049] As shown in FIG. 21 , the modules 100 according to this embodiment can be installed side by side in multiple rows in the left-right direction with the front sides of the housings 1 facing the same direction, and can also be installed stacked vertically. The housings 1 of adjacent modules 100 are connected vertically, for example, by bolt fastening. As shown in FIG. 22 , the module 100 according to this embodiment is configured so that the control box 4 is fully exposed to the outside and can be rotated like a single swing door to open the interior of the housing 1. Therefore, even when multiple modules 100 are arranged horizontally and vertically, the presence of adjacent modules 100 does not interfere, allowing maintenance of each module 100 to be performed. Furthermore, as shown in FIGS. 22 and 23 , the module 100 according to this embodiment is configured so that the control box 4 can be rotated within a 90-degree range from a state in which it is slid forward by the first movable part 5, thereby preventing the control box 4 from coming into contact with adjacent modules 100 in the left-right direction. When multiple modules 100 are installed in the vertical and horizontal directions, the work space 101 is the front and rear sides of the housing 1 of each module 100, and the side sides of the modules 100 located at both ends of the modules 100 lined up in the horizontal direction, as shown in Figure 23.

[0050] As described above, the module 100 according to this embodiment includes the housing 1 that forms an outer shell, and the device group 2 that is arranged inside the housing 1. The device group 2 includes the control box 4 that houses the control device 24. The control box 4 is arranged at the forefront of the housing 1 and is configured to move and rotate outside the housing 1 by the first movable part 5, thereby opening the interior of the housing 1. Therefore, the module 100 allows maintenance work to be performed on some of the device group 2, piping, and wiring without pulling out the support base 3. This eliminates the need to pull out the heavy support base 3 and drain the cooling water pipes 300a and the chilled water pipes 400a, thereby reducing the workload on workers and reducing work costs.

[0051] Although the module 100 has been described above based on the embodiment, it is not limited to the configuration of the above-described embodiment. The configuration of the module 100 described above is an example, and other components may be included, or some components may be omitted. The housing 1 is not limited to the rectangular parallelepiped shape shown in the figure, and may have other shapes. In short, the module 100 includes design modifications and application variations that are normally made by those skilled in the art, as long as they do not deviate from the technical concept of the module 100.

[0052] REFERENCE SIGNS LIST 1 Housing, 2 Equipment group, 3 Support base, 4 Control box, 5 First movable part, 6 Holding member, 7 Fixing bracket, 8 Power supply terminal block, 9 Second movable part, 10 Frame, 11 Front panel, 12 Side panel, 13 Top panel, 20 Compressor, 21 First water heat exchanger, 22 Pressure reducing device, 23 Second water heat exchanger, 24 Control device, 25 Temperature sensor, 26 Pressure sensor, 27 Refrigerant piping, 28 Injection circuit, 29 Control valve, 30 Supporting sheet metal, 31, 32 Joining member, 40 Mounting bracket, 40a Through hole, 40b Notch portion, 41 Joining member, 42 Handle portion, 50 Rail structure portion, 51 Rail main body portion, 52a, 52b Rail portion, 53 Bent portion, 53a First bent portion, 53b Second bent portion, 53c, 53d Through hole, 54 Slit, 55 Guide structure portion, 56 Guide main body portion, 56a Web, 56b First flange portion, 56c Second flange portion, 56d Upper flange portion, 56e Lower flange portion, 56f, 56g Through hole, 56h Cutout portion, 57 Guide portion, 57a Stopper member, 57b Fixing member, 58 Joining member, 60, 61 Joining member, 70 Through hole, 80, 81 Power supply line, 90 Sheet metal, 100 Module, 101 Working space, 200 Refrigerant circuit, 300 Cooling water circuit, 300a Cooling water piping, 400 Chilled water circuit, 400a Chilled water piping.

Claims

1. A housing forming an outer shell; A group of devices arranged inside the housing; A support base on which the equipment group is placed, The device group includes a control box that houses a control device therein, and a device group other than the control box, the control box is disposed at the frontmost part of the housing, and is detachably attached to a first movable part attached to a side surface of the housing, and when attached, the control box is moved and rotated to the outside of the housing by the first movable part to open the inside of the housing, The support base is configured to be moved in the front-to-rear direction of the housing by a second movable part to expose the group of devices to the outside of the housing.

2. The group of devices includes: A compressor that compresses a refrigerant; a first water heat exchanger that performs heat exchange between a refrigerant and a first medium to condense the refrigerant; a pressure reducing device for adjusting the pressure of the refrigerant flowing out from the first water heat exchanger; and a second water heat exchanger that performs heat exchange between the refrigerant and a second medium to evaporate the refrigerant. The module according to claim 1 , wherein the compressor, the first water heat exchanger, the pressure reducing device, and the second water heat exchanger are connected in sequence by refrigerant piping.

3. Inside the housing, the control box, the compressor, and the pressure reducing device are arranged in this order from the front side, and the first water heat exchanger and the second water heat exchanger are arranged side by side behind the pressure reducing device. The module described in claim 2, wherein the pressure reducing device is provided at a height position such that it is visible above the compressor when the control box is rotated to open the front of the housing and the housing is viewed from the front.

4. The equipment group further includes an injection circuit that injects a portion of the refrigerant cooled by the first water heat exchanger into the compressor, and a control valve provided in the injection circuit, 4. The module according to claim 2 or 3, wherein the injection circuit and the control valve are provided at a height position such that they are visible above the compressor when the control box is rotated to open the front of the housing and the housing is viewed from the front.

5. a temperature sensor that detects a temperature of the refrigerant flowing through the refrigerant pipe is provided inside the housing, The module described in claim 2 or 3, wherein the temperature sensor is provided at a height position such that it is visible above the compressor when the control box is rotated to open the front of the housing and the temperature sensor is viewed from the front.

6. A pressure sensor is provided inside the housing to detect a pressure of the refrigerant flowing through the refrigerant pipe, The module described in claim 2 or 3, wherein the pressure sensor is provided at a height position such that it is visible above the compressor when the control box is rotated to open the front of the housing and the housing is viewed from the front.

7. The module according to claim 6 , wherein the pressure sensor is detachably attached to the group of devices in a state where the pressure sensor is attached to a fixing bracket.

8. The device group further includes a power terminal block connected to an external power supply device by a power line, The module described in any one of claims 1 to 3, wherein the control box is configured to move and rotate to the outside of the housing by the first movable part while the control device and the power terminal block are connected by a power line, thereby opening up the inside of the housing.

9. The first movable portion is A rail structure fixed inside the housing; a guide structure to which the control box is attached and which moves along the rail structure; The module described in any one of claims 1 to 3, wherein the guide structure portion is configured to move along the rail structure portion to slide the control box and rotate the slidably moved control box like a single-leaf door.

10. The module according to claim 9 , wherein the guide structure is configured to rotate the slidably moved control box in a range of 0 degrees to 90 degrees.

11. The module according to any one of claims 1 to 3, wherein the control box is provided with a holding member that fixes the position rotated by the first movable part.

12. The module according to any one of claims 1 to 3, wherein the housings are configured to be installed side by side in the left-right direction with their front sides facing the same direction, and to be stacked in the vertical direction.

13. A housing forming an outer shell; A group of devices disposed inside the housing, The group of devices includes: A control box that houses a control device therein; A compressor that compresses a refrigerant; a first water heat exchanger that performs heat exchange between a refrigerant and a first medium to condense the refrigerant; a pressure reducing device for adjusting the pressure of the refrigerant flowing out from the first water heat exchanger; and a second water heat exchanger that performs heat exchange between the refrigerant and a second medium to evaporate the refrigerant. The compressor, the first water heat exchanger, the decompression device, and the second water heat exchanger are connected in sequence by a refrigerant pipe, the control box is disposed at the front of the housing, and is configured to move and rotate to the outside of the housing by a first movable part to open the inside of the housing, Inside the housing, the control box, the compressor, and the pressure reducing device are arranged in this order from the front side, and the first water heat exchanger and the second water heat exchanger are arranged side by side behind the pressure reducing device. The pressure reducing device is a module that is provided at a height position such that it is visible above the compressor when the control box is rotated to open the front of the housing and the housing is viewed from the front.

14. A housing forming an outer shell; A group of devices disposed inside the housing, The group of devices includes: A control box that houses a control device therein; A compressor that compresses a refrigerant; a first water heat exchanger that performs heat exchange between a refrigerant and a first medium to condense the refrigerant; a pressure reducing device for adjusting the pressure of the refrigerant flowing out from the first water heat exchanger; and a second water heat exchanger that performs heat exchange between the refrigerant and a second medium to evaporate the refrigerant. The compressor, the first water heat exchanger, the decompression device, and the second water heat exchanger are connected in sequence by a refrigerant pipe, the control box is disposed at the front of the housing, and is configured to move and rotate to the outside of the housing by a first movable part to open the inside of the housing, The equipment group further includes an injection circuit that injects a portion of the refrigerant cooled by the first water heat exchanger into the compressor, and a control valve provided in the injection circuit, A module in which the injection circuit and the control valve are provided at a height position such that they are visible above the compressor when the control box is rotated to open the front of the housing and the housing is viewed from the front.

15. A housing forming an outer shell; A group of devices disposed inside the housing, The group of devices includes: A control box that houses a control device therein; A compressor that compresses a refrigerant; a first water heat exchanger that performs heat exchange between a refrigerant and a first medium to condense the refrigerant; a pressure reducing device for adjusting the pressure of the refrigerant flowing out from the first water heat exchanger; and a second water heat exchanger that performs heat exchange between the refrigerant and a second medium to evaporate the refrigerant. The compressor, the first water heat exchanger, the decompression device, and the second water heat exchanger are connected in sequence by a refrigerant pipe, the control box is disposed at the front of the housing, and is configured to move and rotate to the outside of the housing by a first movable part to open the inside of the housing, a temperature sensor that detects a temperature of the refrigerant flowing through the refrigerant pipe is provided inside the housing, The temperature sensor is provided at a height position above the compressor such that it is visible when the control box is rotated to open the front of the housing and the temperature sensor is viewed from the front.

16. A housing forming an outer shell; A group of devices disposed inside the housing, The group of devices includes: A control box that houses a control device therein; A compressor that compresses a refrigerant; a first water heat exchanger that performs heat exchange between a refrigerant and a first medium to condense the refrigerant; a pressure reducing device for adjusting the pressure of the refrigerant flowing out from the first water heat exchanger; and a second water heat exchanger that performs heat exchange between the refrigerant and a second medium to evaporate the refrigerant. The compressor, the first water heat exchanger, the decompression device, and the second water heat exchanger are connected in sequence by a refrigerant pipe, the control box is disposed at the front of the housing, and is configured to move and rotate to the outside of the housing by a first movable part to open the inside of the housing, A pressure sensor is provided inside the housing to detect a pressure of the refrigerant flowing through the refrigerant pipe, The pressure sensor is provided at a height position above the compressor such that it is visible when the control box is rotated to open the front of the housing and the pressure sensor is viewed from the front.