Mounting fixture and method for mounting an active filter device

Abstract

This disclosure provides a mounting device and a method for mounting an active filter device that can improve the workability of the installation process for an active filter device. [Solution] The mounting device in this disclosure is a mounting device for attaching an active filter device to the side of an outdoor unit, and is provided with a filter fixing part to which the active filter device is fixed, and a plurality of device-side fastening holes, each of the plurality of device-side fastening holes being formed in a position that overlaps with the outdoor unit-side fastening holes for fastening the components of the outdoor unit, and is attached to the outdoor unit by fastening a first fastening member inserted into the device-side fastening hole and the outdoor unit-side fastening hole.

Description

Technical Field

[0006] , ,

[0005] , , , ,

[0001] The present disclosure relates to a mounting device and a method for mounting an active filter device.

Background Art

[0002] Patent Document 1 discloses an active filter device mounted on an outdoor unit. This active filter device includes an indoor unit current detection sensor installed so as to be able to detect the current flowing through the power line for the indoor unit, and an active filter control unit that performs ON / OFF control of the switching element so that the total current, which is the sum of the outdoor unit current and the indoor unit current, becomes a sine wave.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present disclosure provides a mounting device capable of improving the workability of the mounting operation of an active filter device, and a method for mounting an active filter device.

Means for Solving the Problems

[0005] The mounting device in the present disclosure is a mounting device for mounting an active filter device on the side surface of an outdoor unit, and is provided with a filter fixing portion fixed to the active filter device and a plurality of device - side fastening holes. Each of the plurality of device - side fastening holes is formed at a position overlapping with a fastening - use outdoor - unit - side fastening hole of a component of the outdoor unit, and is attached to the outdoor unit by fastening a first fastening member inserted into the device - side fastening hole and the outdoor - unit - side fastening hole.

[0006] The method for attaching an active filter device in this disclosure is a method for attaching an active filter device to the side of an outdoor unit using an attachment device, and includes a first fastening step of inserting a first fastening member into an outdoor unit-side fastening hole for fastening components of the outdoor unit and an attachment device-side fastening hole provided in the attachment device, and fastening them. [Effects of the Invention]

[0007] The mounting fixture and active filter device described in this disclosure can be attached to the active filter device using fastening holes on the outdoor unit side formed for fastening the components of the outdoor unit. This improves the workability of attaching the active filter device to the outdoor unit. [Brief explanation of the drawing]

[0008] [Figure 1] Front view showing the internal structure of the outdoor unit in Embodiment 1 [Figure 2] Perspective view showing the internal structure of the outdoor unit [Figure 3] Rear view showing the internal structure of the outdoor unit [Figure 4] Right side view of the outdoor unit [Figure 5] Left side view of the outdoor unit [Figure 6] Front view of the outdoor unit with mounting hardware and active filter device attached to the right side. [Figure 7] A close-up right-side view showing the mounting fixture and active filter device attached to the right side of the enclosure. [Figure 8] Right side view showing frame members [Figure 9] Perspective view of the filter mounting section [Figure 10] Right side view of the third member [Figure 11] Left side view showing enlarged view of the mounting fixture and active filter device attached to the left side. [Figure 12] Plan view showing two outdoor units and an active filter device arranged side by side in the left-right direction. [Figure 13] Diagram illustrating the installation process. [Modes for carrying out the invention]

[0009] (Knowledge and other information that formed the basis of this disclosure) At the time the inventors conceived this disclosure, air conditioning technology primarily involved handling large currents in the outdoor unit. Therefore, in the industry, the generation of harmonics from the outdoor unit was a challenge, and product designs sometimes incorporated active filter devices to suppress harmonics. Under these circumstances, the inventors, noticing that even with the same model of outdoor unit, an active filter device might or might not be necessary depending on the installation environment, conceived the idea of ​​attaching the active filter device to the outdoor unit as needed after installation. The inventors then discovered that realizing this idea presented a challenge: the time-consuming process of machining dedicated screw holes and other features for the active filter device onto the outdoor unit. To solve this problem, they arrived at the subject matter of this disclosure. This disclosure provides a mounting device and an active filter device that can improve the workability of installing an active filter device to an outdoor unit.

[0010] The embodiments will be described in detail below with reference to the drawings. However, unnecessary details may be omitted. For example, detailed explanations of already well-known matters or redundant explanations of substantially identical configurations may be omitted. This is to avoid the following explanation becoming unnecessarily verbose and to facilitate understanding for those skilled in the art. The attached drawings and the following description are provided to enable those skilled in the art to fully understand this disclosure and are not intended to limit the subject matter described in the claims.

[0011] (Embodiment 1) Embodiment 1 will be described below with reference to the drawings. [1-1. Structure] [1-1-1. Structure of the outdoor unit] FIG. 1 is a front view showing the internal structure of the outdoor unit 1 of the air conditioner according to Embodiment 1, showing the outdoor unit 1 viewed from the front side. FIG. 2 is a perspective view showing the internal structure of the outdoor unit 1, showing the outdoor unit 1 viewed from the right front side. FIG. 3 is a rear view showing the internal structure of the outdoor unit 1, showing the outdoor unit 1 viewed from the rear side. FIG. 4 is a right side view of the outdoor unit 1, showing the outdoor unit 1 viewed from the right direction. FIG. 5 is a left side view of the outdoor unit 1, showing the outdoor unit 1 viewed from the left direction. In FIGS. 1 to 3, the outdoor unit 1 from which the housing panel 17 described later is removed is shown. Also, in the figure, the symbol X indicates the left direction, the symbol Y indicates the front direction, and the symbol Z indicates the upward direction, respectively.

[0012] The outdoor unit 1 is a device mainly installed outdoors in an air conditioner. The outdoor unit 1 is connected to an indoor unit (not shown) that mainly performs air conditioning of the indoor space via a refrigerant pipe or the like.

[0013] [1-1-1-1. Structure of the housing] The outdoor unit 1 has a housing 10. The housing 10 is formed in a substantially rectangular parallelepiped shape with a hollow interior, and houses each component and device of the outdoor unit 1. As shown in FIGS. 1 to 5, the housing 10 has a front surface 10A facing the front side, a rear surface 10B facing the rear side, a right side surface 10C facing the right direction, and a left side surface 10D facing the left direction. In the housing 10 of the outdoor unit 1, among the horizontal directions, the longitudinal direction is the left-right direction, and the short-side direction is the front-rear direction. The front surface 10A and the rear surface 10B are substantially orthogonal to the front-rear direction, which is the depth direction of the outdoor unit 1, and the right side surface 10C and the left side surface 10D are along the front-rear direction. The right side surface 10C and the left side surface 10D in the present embodiment correspond to an example of the "side surface of the outdoor unit" in the present disclosure.

[0014] As shown in Figures 1 to 3, an open intake port 11 is provided in the upper part of the housing 10. In addition, an upward-opening outlet port 13 is provided on the top surface of the housing 10. Furthermore, a heat exchanger 21 is positioned in the outdoor unit 1 to block the intake port 11. The heat exchanger 21 is, for example, a plate fin tube type heat exchanger. The heat exchanger 21 is configured to allow air to pass through, and heat exchange occurs between the refrigerant flowing inside and the air passing through the heat exchanger 21. The outdoor unit 1 draws in outside air from the intake port 11 by driving a blower (not shown) located in the upper part of the inside of the housing 10. At this time, the air that has passed through the intake port 11 passes through the heat exchanger 21 and exchanges heat with the refrigerant flowing inside the heat exchanger 21. After the heat exchange with the refrigerant, the air that has flowed into the inside of the housing 10 is blown out to the outside through the outlet port 13 by the blower.

[0015] As shown in Figures 1 to 5, a machine room 15 is provided in the lower part of the housing 10. The machine room 15 is a room for arranging various devices in the outdoor unit 1. The machine room 15 is covered from the front, rear, right side, and left side by a plurality of housing panels 17 that are detachable from the housing 10. The housing panels 17 are flat plate-shaped members made of sheet metal. As shown in Figure 5, a ventilation section 17A is formed in the housing panel 17 provided on the left side surface 10D of the housing 10. The ventilation section 17A is an opening formed at the rear of the housing panel 17 on the left side surface 10D. The inside and outside of the machine room 15 can be ventilated through the ventilation section 17A. As will be described later, in this embodiment, the ventilation section 17A is used for supplying air to the gas engine 24.

[0016] Furthermore, four corner frames 19 are provided on the lower part of the housing 10. The corner frames 19 are members made of sheet metal and are bent into a roughly L-shape when viewed from above. The corner frames 19 are located at the four corners of the machine room 15: the front right, front left, rear right, and rear left. Each corner frame 19 has two surfaces that run along adjacent sides of the housing 10. In the vertical direction, the corner frames 19 occupy approximately the same positions as the machine room 15. The corner frames 19 in this embodiment correspond to an example of an "outdoor unit component" in this disclosure.

[0017] The enclosure panel 17 and corner frame 19 are fixed to the enclosure frame 18. The enclosure frame 18 is made of sheet metal and is a framework along the corners of the machine room 15. The enclosure frame 18 has a first enclosure fastening hole 18A and a second enclosure fastening hole 18B. The first enclosure fastening hole 18A and the second enclosure fastening hole 18B are holes with internal threads formed on the inside.

[0018] The housing panel 17 has panel-side fastening holes 17B formed in a position that overlaps with the first housing fastening holes 18A. The panel-side fastening holes 17B are holes that penetrate the housing panel 17, and multiple such holes are provided in each housing panel 17. The housing panel 17 is fixed to the housing frame 18 when the panel-side fastening holes 17B and the first housing fastening holes 18A are overlapped, and the panel fastening members 17C inserted into the panel-side fastening holes 17B and the first housing fastening holes 18A are fastened to the first housing fastening holes 18A. The panel fastening members 17C are, for example, screws or bolts.

[0019] Corner fastening holes 19A are formed in the corner frame 19 at positions that overlap with the second housing fastening holes 18B. The corner fastening holes 19A are holes that penetrate the corner frame 19. In this embodiment, eight corner fastening holes 19A are provided for each corner frame 19. More specifically, two corner fastening holes 19A are provided on the upper part of each surface of the corner frame 19, and two on the lower part.

[0020] The corner frame 19 is fixed to the housing frame 18 by fastening the corner fastening member 19B, which is inserted into the corner fastening hole 19A and the second housing fastening hole 18B, to the second housing fastening hole 18B, with the corner fastening hole 19A and the second housing fastening hole 18B overlapping. The corner fastening member 19B is, for example, a screw or a bolt.

[0021] [1-1-1-2. Internal configuration of the outdoor unit] Next, we will explain the internal configuration of the outdoor unit 1. As shown in Figures 1 and 2, the machine room 15 is equipped with an E-side compressor 22 and a G-side compressor 23. The E-side compressor 22 is an electric compressor that compresses the refrigerant by the drive of an electric motor. The G-side compressor 23 is a device that compresses the refrigerant by the drive of a gas engine 24 located in the machine room 15. The E-side compressor 22 and the G-side compressor 23 are connected in parallel in the refrigerant circuit. The gas engine 24 is an internal combustion engine that generates mechanical energy using liquefied petroleum gas or city gas as fuel. Thus, the outdoor unit 1 of this embodiment is an outdoor unit of a hybrid air conditioner that combines an EHP (Electric Heat Pump) and a GHP (Gas engine Heat Pump). In this embodiment, the gas engine 24 is located approximately in the center of the machine room 15, and the G-side compressor 23 is located below the gas engine 24. Furthermore, the E-side compressor 22 is positioned to the right of the G-side compressor 23.

[0022] The machine room 15 is equipped with an air cleaner 25, an engine belt 26, and an oil tank 27. The air cleaner 25 is connected to a vent 17A and purifies the air supplied to the gas engine 24 via the vent 17A. The air cleaner 25 is located at the top left of the machine room 15. The engine belt 26 is a so-called V-belt that transmits power to the drive unit of the gas engine 24's G-side compressor 23. The engine belt 26 is wrapped around the gas engine 24 and the G-side compressor 23. The oil tank 27 is a tank that stores engine oil supplied to the gas engine 24. The oil tank 27 is located at the bottom left of the machine room 15. An opening 27A is provided at the top of the oil tank 27, which is used for inserting an oil level gauge or changing the engine oil. Furthermore, an oil pump 28 is provided near the G-side compressor 23 to supply engine oil from the oil tank 27 to the gas engine 24.

[0023] The E-side compressor 22, as described above, is located on the front 10A side of the housing 10 within the machine room 15, and is visible from the front by removing the housing panel 17 on the front 10A. The air cleaner 25 is also visible from the front by removing the housing panel 17 on the front 10A within the machine room 15. The engine belt 26 is also visible from the front by removing the housing panel 17 on the front 10A within the machine room 15. Furthermore, the opening 27A of the oil tank 27 is visible from the front by removing the housing panel 17 on the front 10A. Therefore, in this embodiment, by removing the housing panel 17 provided on the front 10A of the housing 10, maintenance work such as cleaning, replacement, and oil changes of the E-side compressor 22, air cleaner 25, engine belt 26, and oil tank 27 can be performed from the front of the housing 10.

[0024] Furthermore, as shown in Figures 1 and 2, a cooling water three-way valve 29, a refrigerant low-pressure sensor 30, a refrigerant high-pressure sensor 31, and an E-side high-pressure switch 32 are provided in the upper right part of the machine room 15. The cooling water three-way valve 29 is a valve that switches the flow path of cooling water between the cooling water radiator, the sub-evaporator 46 (see Figure 3), and the gas engine 24. The refrigerant low-pressure sensor 30 is provided on the suction side of the E-side compressor 22 and the G-side compressor 23 and is a sensor that detects the pressure of the refrigerant. The refrigerant high-pressure sensor 31 is provided on the discharge side of the E-side compressor 22 and the G-side compressor 23 and is a sensor that detects the pressure of the refrigerant. The E-side high-pressure switch 32 is provided on the discharge side of the E-side compressor 22 and outputs a detection signal when the refrigerant pressure becomes abnormally high.

[0025] An oil separator 33 and an oil return valve 34 are provided in the lower right part of the machine room 15. The oil separator 33 separates and recovers lubricating oil from the refrigerant discharged to the E-side compressor 22 and the G-side compressor 23, and returns it to the suction side of the E-side compressor 22 and the G-side compressor 23. The oil return valve 34 is a solenoid valve that adjusts the flow rate of oil returned from the oil separator 33 to the suction side of the E-side compressor 22 and the G-side compressor 23 by opening and closing it.

[0026] As shown in Figure 2, in the machine room 15, a four-way valve 35 and a subcool heat exchanger 36 are provided behind the E-side compressor 22. The four-way valve 35 is a valve that switches the flow path of the refrigerant by electronic control. The four-way valve 35 switches the operation of the air conditioner between cooling operation and heating operation by switching the flow path of the refrigerant. The subcool heat exchanger 36 is a heat exchanger that exchanges heat between the liquid refrigerant on the outlet side of the receiver tank and a refrigerant that has been partially branched off from the liquid refrigerant and reduced in pressure. As the liquid refrigerant on the outlet side of the receiver tank passes through the subcool heat exchanger 36, it is supercooled by the branched and reduced-pressure refrigerant.

[0027] As shown in Figure 3, the machine room 15 is provided with an E-side electrical box 37 and a G-side electrical box 38. The E-side electrical box 37 is a roughly rectangular box made of sheet metal and houses a circuit board that controls the operation of the E-side compressor 22 and the like. The G-side electrical box 38 is a roughly rectangular box made of sheet metal and houses a circuit board that controls the operation of the gas engine 24 and the G-side compressor 23 and the like. Inside the G-side electrical box 38 is a starter power supply 39 for the gas engine 24. In this embodiment, the G-side electrical box 38 is located approximately in the center of the machine room 15 on the rear side 10B. The E-side electrical box 37 is located on the rear side 10B of the machine room 15, spaced apart to the right of the G-side electrical box 38.

[0028] Furthermore, a terminal box 40 is positioned between the E-side electrical box 37 and the G-side electrical box 38. Inside the terminal box 40 are terminal blocks that connect to the circuit board of the E-side electrical box 37 or the circuit board of the G-side electrical box 38. For example, power is supplied to the circuit board of the E-side electrical box 37 or the G-side electrical box 38 by connecting power lines to the terminal blocks of the terminal box 40.

[0029] As shown in Figure 3, the E-side electrical box 37 is located in a position visible from the rear when the housing panel 17 on the rear 10B of the housing 10 is removed. Similarly, the G-side electrical box 38 is located in a position visible from the rear when the housing panel 17 on the rear 10B of the housing 10 is removed. Therefore, by removing the housing panel 17 on the rear 10B, the E-side electrical box 37 and the G-side electrical box 38 can be accessed from the rear, allowing for error diagnosis or maintenance work such as replacing circuit boards or electronic components. Likewise, the terminal box 40 is located in a position visible from the rear when the housing panel 17 on the rear 10B of the housing 10 is removed. Therefore, by removing the housing panel 17 on the rear 10B, the E-side electrical box 37 and the G-side electrical box 38 can be accessed from the rear, allowing for wiring connection work to the terminal block.

[0030] As shown in Figure 3, on the rear side 10B of the machine room 15, a cooling water pump 41, an exhaust gas heat exchanger 42, and a neutralizer 43 are installed to the left of the G-side electrical box 38. The cooling water pump 41 is a pump that circulates the cooling water in the cooling water circuit that cools the gas engine 24. The exhaust gas heat exchanger 42 is a heat exchanger installed downstream of the cooling water pump 41, and cools the exhaust gas by exchanging heat between the cooling water and the exhaust gas of the gas engine 24. The neutralizer 43 neutralizes the acidic drain water generated from the exhaust gas that flows through the exhaust muffler etc. after passing through the exhaust gas heat exchanger 42, using a neutralizing agent such as calcium carbonate stored inside. The exhaust gas that has passed through the exhaust muffler is exhausted to the outside via the exhaust top 14 installed at the left end of the top surface of the housing 10.

[0031] Furthermore, on the rear side 10B of the machine room 15, a fuel shut-off valve 44 and a zero governor 45 are provided at the lower left end. The fuel shut-off valve 44, when closed, shuts off the supply of fuel to the gas engine 24. The zero governor 45 is located downstream of the fuel shut-off valve 44 and upstream of the mixer that mixes fuel with air that has passed through the air cleaner 25. The zero governor 45 maintains the pressure in the mixer located downstream at approximately atmospheric pressure.

[0032] In the machine room 15, on the rear side 10B, a sub-evaporator 46 is provided above the E-side electrical box 37. The sub-evaporator 46 is, for example, a plate-type heat exchanger. The sub-evaporator 46 exchanges heat between high-temperature cooling water and the refrigerant in front of the accumulator, causing the refrigerant to gasify.

[0033] On the rear side 10B of the machine room 15, to the right of the E-side electrical box 37, a gas refrigerant shut-off valve 47, a liquid refrigerant shut-off valve 48, and a dry core 49 are provided. The gas refrigerant shut-off valve 47, when closed, is a valve that shuts off the gas refrigerant flow path in the outdoor unit 1 and the gas-side internal / outdoor connecting piping that connects the indoor unit and the outdoor unit 1 and through which the gas refrigerant flows. The liquid refrigerant shut-off valve 48, when closed, is a valve that shuts off the liquid refrigerant flow path in the outdoor unit 1 and the liquid-side internal / outdoor connecting piping that connects the indoor unit and the outdoor unit 1 and through which the liquid refrigerant flows. The dry core 49 is a device that removes foreign matter or moisture from the refrigerant and is connected to the liquid refrigerant shut-off valve 48 on the opposite side of the liquid-side internal / outdoor connecting piping.

[0034] [1-1-2. Configuration of the mounting fixture] Next, the mounting fixture 50 for attaching the active filter device 90 to the outdoor unit 1 will be described. The mounting fixture 50 and the active filter device 90 may or may not be necessary depending on the installation environment of the outdoor unit 1. For this reason, the mounting fixture 50 and the active filter device 90 are configured to be attached to the outdoor unit 1 after the outdoor unit 1 has been installed. The mounting fixture 50 in this embodiment is configured to be attached to both the right side 10C and the left side 10D of the housing 10. The following explanation will begin with the assumption that the mounting fixture 50 is attached to the right side 10C, including its orientation and position.

[0035] Figure 6 is a front view of the outdoor unit 1 with the mounting fixture 50 and active filter device 90 attached to the right side surface 10C. Figure 7 is a magnified right side view showing the mounting fixture 50 and active filter device 90 attached to the right side surface 10C of the housing 10.

[0036] The active filter device 90 is a device that attenuates harmonics by generating a current that is in the opposite phase to the harmonic currents generated in the outdoor unit 1. The active filter device 90 in this embodiment has a hollow, substantially rectangular casing 91 made of sheet metal. The active filter device 90 also has a filter circuit and the like inside the casing 91. The active filter device 90 is electrically connected to the circuit board in the E-side electrical box 37 and the circuit board in the G-side electrical box 38 via a cable (not shown) connected to the terminal box 40.

[0037] The mounting device 50 has a frame portion 60 and a filter fixing portion 80. The frame portion 60 is the part of the mounting device 50 that is fixed to the right side 10C or left side 10D of the housing 10. The filter fixing portion 80 is the part of the mounting device 50 that is fixed to the active filter device 90 and attached to the frame portion 60. The mounting device 50 may be delivered to the customer in an assembled state with the filter fixing portion 80 and the frame portion 60 as a single unit. Alternatively, the mounting device 50 may be delivered to the customer with the filter fixing portion 80 and the frame portion 80 in separate states. Furthermore, the mounting device 50 may be delivered to the customer as a set of parts in which the frame member 61 that constitutes the frame portion 60, the first member 81, second member 82, third member 83, fourth member 85 that constitute the filter fixing portion 80, and fastening members such as the fixing member 71 used to fix them are not assembled. In addition, the mounting fixture 50 may be delivered in any form, such as with only some of its parts assembled.

[0038] [1-1-2-1. Frame Structure] Figure 8 is a right side view showing the frame member 61. The frame section 60 has frame members 61. The frame members 61 are rod-shaped members that extend along the front-rear direction. In this embodiment, the frame section 60 has two frame members 61. The two frame members 61 are arranged side by side, one above the other. In this embodiment, the frame members 61 are made of sheet metal.

[0039] The frame member 61 has a frame body portion 62. The frame body portion 62 is a rod-shaped part of the frame member 61 that extends along the front-rear direction. The frame body portion 62 is bent into a substantially U-shape in a cross section perpendicular to the front-rear direction, thereby increasing its rigidity.

[0040] The frame member 61 has frame fastening portions 63. The frame fastening portions 63 are the parts of the frame member 61 that are fixed to the outdoor unit 1. The frame fastening portions 63 are provided at both ends in the front-rear direction of the frame main body portion 62 of the frame member 61. The frame fastening portions 63 have a planar structure that is substantially perpendicular to the left-right direction. As shown in Figure 7, each frame fastening portion 63 is provided in a position that overlaps with one pair of corner fastening holes 19A, the second housing fastening hole 18B, and the corner fastening member 19B when viewed from the right.

[0041] A fastening hole 65 for the device is formed in the frame fastening portion 63. The fastening hole 65 for the device is a through hole that penetrates the frame fastening portion 63 from left to right. No internal threads are formed on the inner surface of the fastening hole 65 for the device. The fastening hole 65 for the device is sized to allow the shaft portion of the corner fastening member 19B to pass through, but not the head portion. In this embodiment, the fastening hole 65 for the device is sized to be the same size as the fastening hole 19A for the corner fastening hole 19A.

[0042] Distance L1 is defined as the distance between the two device-side fastening holes 65 formed in the upper frame member 61. In this embodiment, distance L1 is set to the distance between one pair of corner fastening holes 19A and a second housing fastening hole 18B on the upper part of the front corner frame 19 on the right side surface 10C of the housing 10, and one pair of corner fastening holes 19A and a second housing fastening hole 18B on the upper part of the rear corner frame 19. Therefore, the two device-side fastening holes 65 formed in the upper frame member 61 can be simultaneously positioned in conjunction with the two pairs of corner fastening holes 19A and second housing fastening holes 18B provided on the upper part of the two corner frames 19 on the right side surface 10C.

[0043] Similarly, the distance between the two device-side fastening holes 65 formed in the lower frame member 61 is defined as distance L2. In this embodiment, distance L2 is set to the distance between one pair of corner fastening holes 19A and a second housing fastening hole 18B at the bottom of the front corner frame 19 on the right side surface 10C of the housing 10, and one pair of corner fastening holes 19A and a second housing fastening hole 18B at the bottom of the rear corner frame 19. Therefore, the two device-side fastening holes 65 formed in the lower frame member 61 can be simultaneously positioned in conjunction with the two pairs of corner fastening holes 19A and second housing fastening holes 18B provided at the bottom of the two corner frames 19 on the right side surface 10C.

[0044] Therefore, as shown in Figure 7, the frame member 61 can be fixed to the right side surface 10C of the housing 10 by fastening it with two device-side fastening holes 65 overlapping two sets of corner fastening holes 19A and a second housing fastening hole 18B. In this embodiment, the frame member 61 is fixed to the right side surface 10C by inserting the shaft portion of the corner fastening member 19B into the two sets of overlapping corner fastening holes 19A, the second housing fastening hole 18B, and the device-side fastening hole 65, and fastening the shaft portion to the second housing fastening hole 18B. In this embodiment, the corner fastening hole 19A and the second housing fastening hole 18B correspond to an example of an "outdoor unit side fastening hole" in this disclosure. In this embodiment, the corner fastening member 19B corresponds to an example of a "first fastening member" in this disclosure.

[0045] In the frame member 61, the frame body portion 62 has a frame-side fastening hole 67. The frame-side fastening hole 67 is a hole for fastening the filter fixing portion 80 to the frame portion 60. In this embodiment, the frame-side fastening hole 67 is a hole with an internal female thread, and as shown in Figure 7, it can be fastened with a fixing fastening member 71. The fixing fastening member 71 is, for example, a screw or a bolt. The fixing fastening member 71 corresponds to an example of the "second fastening member".

[0046] In this embodiment, the frame-side fastening holes 67 are formed in pairs, front to back, and are located at the rear of the frame body 62 when the mounting fixture 50 is attached to the right side surface 10C. Therefore, as shown in Figure 7, when the mounting fixture 50 is attached to the right side surface 10C, the filter fixing part 80 and the active filter device 90 fixed to the filter fixing part 80 are each positioned behind the center C1 of the right side surface 10C in the front-to-back direction. That is, the filter fixing part 80 and the active filter device 90 fixed to the filter fixing part 80 are positioned so as not to overlap with the center C1 when viewed from the right direction perpendicular to the right side surface 10C. In addition, in this embodiment, the casing 91 of the active filter device 90 has a cover member 93 that can be removed to access the internal filter circuit, etc. The cover member 93 is located on the rear surface of the casing 91 when it is attached to the right side surface 10C via the mounting fixture 50. Therefore, the filter circuit and other components inside the casing 91 of the active filter device 90, which is mounted on the right side 10C, are easily accessible from the rear.

[0047] [1-1-2-2. Configuration of the filter fixing section] Figure 9 is a perspective view of the filter fixing part 80. The filter fixing part 80 has a first member 81. The first member 81 is a member that is fixed to the upper part of the casing 91 of the active filter device 90 from the left side. The first member 81 is made of sheet metal and is fixed to the casing 91 by fastening screws.

[0048] The filter fixing portion 80 passes through the second member 82. The second member 82 is a member that is fixed from below to the bottom of the casing 91 of the active filter device 90. The second member 82 is made of sheet metal and is approximately rectangular in plan view. The second member 82 is fixed to the casing 91 by fastening screws.

[0049] The filter fixing portion 80 has a third member 83. The third member 83 is a rod-shaped member that extends in the vertical direction. In this embodiment, two third members 83 are provided side by side in the front-to-back direction. The third member 83 is made of sheet metal and has a main body portion 84. The main body portion 84 is bent into a substantially U-shape in a horizontal cross-section, and is a part that has increased rigidity. The main body portion 84 is fixed to the first member 81 and the second member 82 by fastening screws.

[0050] Figure 10 is a right side view of the third member 83. Of the third member 83, fastening portions 85 are formed above and below the main body portion 84. The fastening portions 85 are the parts that are fixed to the frame member 61 by fastening the fixing portion fastening members 71. The fastening portions 85 have a planar structure that is substantially perpendicular to the left-right direction.

[0051] A fixing-side fastening hole 86 is formed in the upper fastening portion 85. The fixing-side fastening hole 86 is a through hole that penetrates the fastening portion 85 in the left-right direction. In this embodiment, the fixing-side fastening hole 86 is a semicircular hole. The fixing-side fastening hole 86 does not have an internal thread formed on the inside. The fixing-side fastening hole 86 is formed to a size that allows the shaft portion 71A of the fixing-side fastening member 71 to pass through, but prevents the head portion 71B of the fixing-side fastening member 71 from passing through. Therefore, the fixing-side fastening hole 86 and the frame-side fastening hole 67 of the upper frame member 61 are overlapped left and right, the shaft portion 71A is inserted into the fixing-side fastening hole 86 and the frame-side fastening hole 67, and the fixing-side fastening member 71 is fastened to the frame-side fastening hole 67, thereby fixing the fastening portion 85 to the frame member 61.

[0052] Furthermore, a through hole 87 is formed in the fastening portion 85. The through hole 87 is a through hole that penetrates the fastening portion 85 in the left-right direction. In this embodiment, the through hole 87 is a circular hole. The fastening hole 86 on the fixing portion side does not have an internal thread formed on the inside. The through hole 87 is formed in connection with the fastening hole 86 on the fixing portion side. More specifically, the through hole 87 is formed in connection with the lower side of the fastening hole 86 on the fixing portion side. The fastening hole 86 on the fixing portion side is formed to a size that allows the shaft portion 71A and the head portion 71B of the fastening member 71 for the fixing portion to pass through. Also, the width of the hole at the connection portion between the fastening hole 86 on the fixing portion side and the through hole 87 is greater than the thickness of the shaft portion 71A. Therefore, by passing the head 71B of the fastening member 71 for the fixing part, which has been pre-fastened into the fastening hole 67 on the frame side, through the insertion hole 87 and lowering the filter fixing part 80 downwards, the shaft part 71A can be passed through the fastening hole 86 on the fixing part side.

[0053] A second fixing part side fastening hole 88 is formed in the lower fastening part 85. The second fixing part side fastening hole 88 is a through hole that penetrates the lower fastening part 85 in the left-right direction. The second fixing part side fastening hole 88 is formed to a size that allows the shaft portion 71A of the fixing part fastening member 71 to pass through, but prevents the head portion 71B of the fixing part fastening member 71 from passing through. Therefore, the second fixing part side fastening hole 88 and the frame side fastening hole 67 of the lower frame member 61 are aligned left and right, the shaft portion 71A is inserted into the second fixing part side fastening hole 88 and the frame side fastening hole 67, and the fixing part fastening member 71 is fastened to the frame side fastening hole 67, thereby fixing the fastening part 85 to the frame member 61.

[0054] The filter fixing portion 80 has a fourth member 89. The fourth member 89 is made of sheet metal and is fixed to the second member 82 and the third member 83 by fastening screws. In this embodiment, two fourth members 89 are provided side by side in the front-to-back direction.

[0055] In this manner, the filter fixing portion 80 is fixed to the frame portion 60 by fastening the fixing portion fastening members 71 inserted into the fixing portion side fastening holes 86 and the second fixing portion side fastening holes 88, and the frame side fastening holes 67 of both the upper and lower frame members 61.

[0056] [1-1-2-3. Configuration when mounted on the left side] Figure 11 is a magnified left side view showing the mounting fixture 50 and active filter device 90 attached to the left side surface 10D. As shown in Figure 11, when the mounting fixture 50 is attached to the left side surface 10D, the frame portion 60 is attached to the left side surface 10D in the same manner as when it is attached to the right side surface 10C. That is, the frame portion 60 is attached to the left side surface 10D by inserting the shaft portion of the corner fastening member 19B into the overlapping corner fastening holes 19A, the second housing fastening hole 18B, and the device-side fastening hole 65, and fastening the shaft portion to the second housing fastening hole 18B.

[0057] When the frame portion 60 is attached to the left side surface 10D, the two frame-side fastening holes 67 are located at the front of the frame body portion 62. Therefore, as shown in Figure 11, when the mounting fixture 50 is attached to the left side surface 10D, the filter fixing portion 80 and the active filter device 90 fixed to the filter fixing portion 80 are each positioned forward of the center C2 of the left side surface 10D in the front-rear direction. That is, the filter fixing portion 80 and the active filter device 90 fixed to the filter fixing portion 80 are positioned so as not to overlap with the center C2 when viewed from the left direction perpendicular to the left side surface 10D. As mentioned above, a ventilation portion 17A is provided at the rear of the housing panel 17 on the left side surface 10D, but the filter fixing portion 80 and the active filter device 90, which are located forward of the center C2, do not block the ventilation portion 17A.

[0058] Furthermore, in the casing 91 of the active filter device 90, which is attached to the left side surface 10D via the mounting fixture 50, the cover member 93 is located on the front of the casing 91. Therefore, the active filter device 90 attached to the left side surface 10D allows for easy access from the front to the filter circuit and other components inside the casing 91.

[0059] Figure 12 is a plan view showing two outdoor units 1 and active filter devices 90 installed side by side in the left-right direction. In Figure 12, two sets of mounting fixtures 50 and active filter devices 90 are attached to the right side 10C of the left outdoor unit 1 and to the left side 10D of the right outdoor unit 1.

[0060] As described above, the active filter device 90 and filter fixing part 80 attached to the right side surface 10C of the left outdoor unit 1 are located behind the center C1 of the right side surface 10C in the front-to-back direction. Similarly, as described above, the active filter device 90 and filter fixing part 80 attached to the left side surface 10D of the right outdoor unit 1 are located in front of the center C2 of the left side surface 10D in the front-to-back direction. Furthermore, since the housing 10 of the outdoor unit 1 is approximately rectangular, when the two outdoor units 1 are aligned in the left-to-right direction with their positions in the front-to-back direction aligned, the center C1 and center C2 occupy the same position in the front-to-back direction.

[0061] In other words, when the right side surface 10C is designated as the first side surface, and the mounting fixture 50 is attached to the first side surface, the active filter device 90 and the filter fixing part 80 are located on the rear side, which is one side of the center C1 of the first side surface, in the front-to-back direction which is the horizontal direction along the first side surface. When the left side surface 10D, opposite to the right side surface 10C, is designated as the second side surface, and the mounting fixture 50 is attached to the second side surface, the active filter device 90 and the filter fixing part 80 are located on the rear side, which is the other side of the center C2 of the second side surface, in the front-to-back direction which is the horizontal direction along the second side surface.

[0062] Therefore, as shown in Figure 12, for two outdoor units 1 that are aligned in the front-to-back direction and placed side by side in the left-to-right direction, the two active filter devices 90 installed between the two outdoor units 1 can be installed so that their positions in the front-to-back direction do not overlap with each other, but their positions in the left-to-right direction do overlap. This allows the two active filter devices 90 attached to the two outdoor units 1 to be arranged in a space-saving manner without interfering with each other.

[0063] Furthermore, in this embodiment, the lid member 93 of the active filter device 90 attached to the right side 10C is located on the rear surface of the casing 91, and the lid member 93 of the active filter device 90 attached to the left side 10D is located on the front surface of the casing 91.

[0064] In other words, when the mounting fixture 50 is attached to the first side (right side 10C), the cover member 93 of the active filter device 90, which is located on one side (rear side) of the center C1 of the first side, is located on one side (rear side) of the casing 91. Also, when the mounting fixture 50 is attached to the second side (left side 10D), the cover member 93 of the active filter device 90, which is located on the other side (front side) of the center C2 of the second side, is located on the other side of the casing 91.

[0065] Therefore, the two cover members 93 are located on the outer surfaces in the front-to-back direction of the two active filter devices 90 which are aligned in the front-to-back direction, making it easy to attach and detach the cover members 93 to access the filter circuit and other components inside the casing 91.

[0066] [1-2. Operation] The operation for attaching the mounting device 50, configured as described above, to the outdoor unit 1 will be explained below.

[0067] Figure 13 is a diagram illustrating the steps of an installation operation, which involves attaching an active filter device 90 to an outdoor unit 1 using a mounting fixture 50. At the start of the installation operation, the outdoor unit 1 is already installed. The installation operation is performed by the worker who installed the outdoor unit 1 or by other workers. The units of the installation operation shown in Figure 13 are divided according to the content of the installation method of the active filter device 90 for the purpose of ease of understanding, and the content of the installation method is not limited by the way it is divided or the names of the divisions. Furthermore, the process may be divided into even more steps depending on the content of the installation method, or the process may be divided so that it includes even more content of the installation method. The order of the steps may also be changed as appropriate, as long as it does not hinder the intent of this disclosure.

[0068] At the start of the installation work, the worker performs a fastening release step S1. Fastening release step S1 is the process of releasing the fastening of corner fastening members 19B located on the right side 10C or left side 10D that overlap with the fastening holes 65 on the frame portion 60 of the mounting device 50. In other words, in fastening release step S1, the fastening of corner fastening members 19B that are inserted into the corner fastening holes 19A and the second housing fastening hole 18B, but not into the fastening holes 65 on the frame portion 60, is released and removed. In this embodiment, in fastening release step S1, the fastening of the four corner fastening members 19B located on the right side 10C or left side 10D that overlap with the four fastening holes 65 on the frame portion 60 is released and removed. The fastening release step S1 is completed when all corner fastening members 19B located in positions overlapping with the fastening holes 65 are removed.

[0069] Furthermore, the corner frame 19 is fastened to the housing frame 18 by more corner fastening members 19B than the number of corner fastening members 19B removed in the fastening release process S1. In this embodiment, each corner frame 19 is fastened to the housing frame 18 by eight corner fastening members 19B, and only two corner fastening members 19B are removed from each corner frame 19 in the fastening release process S1. Therefore, the corner frame 19 is not removed from the housing 10 even after the fastening release process S1, and the effort of reattaching the corner frame 19 to the housing 10 is not required.

[0070] After the fastening release process S1, the worker performs the first fastening process S2. The first fastening process S2 is the process of attaching the frame portion 60 of the mounting device 50 to the right side 10C or left side 10D of the outdoor unit 1. In the first fastening process S2, the worker positions the frame member 61 so that the device-side fastening hole 65 overlaps with the corner fastening hole 19A and the second housing fastening hole 18B from which the corner fastening member 19B was removed in the fastening release process S1. The worker then inserts fastening members into the overlapping corner fastening hole 19A, the second housing fastening hole 18B, and the device-side fastening hole 65 on the left and right sides and fastens them, thereby fixing the frame member 61 to the right side 10C or left side 10D. Once the worker has fixed the two frame members 61 to the right side 10C or left side 10D, the fixing of the frame portion 60 is completed, and the first fastening process S2 is completed.

[0071] In the first fastening step S2 of this embodiment, the worker uses the corner fastening member 19B that was removed in the release step S1 as a fastening member to be inserted into the overlapping corner fastening holes 19A, the second housing fastening hole 18B, and the device-side fastening hole 65. Therefore, the removed corner fastening member 19B can be effectively utilized, reducing the number of necessary parts and thus improving work efficiency. In this way, the frame portion 60 of the mounting device 50 is fixed to the right side 10C or left side 10D of the outdoor unit 1 using the screw holes and screws, bolts, etc., that were originally provided in the outdoor unit 1 for fastening the components of the outdoor unit 1, as well as the corner fastening holes 19A, the second housing fastening hole 18B, and the corner fastening member 19B. This eliminates the need to create new screw holes for mounting the active filter device 90 in the outdoor unit 1 when attaching the active filter device 90 to the outdoor unit 1. Therefore, the mounting device 50 improves the workability of the installation of the active filter device 90.

[0072] After the first fastening process, the worker performs the filter fixing process S3. The filter fixing process S3 is the process of fixing the active filter device 90 and the filter fixing part 80. Specifically, in the filter fixing process S3, the worker fastens the first member 81 and the second member 82 to the active filter device 90 by fastening. Next, the worker fastens the third member 83 to the first member 81 and the second member 82 by fastening. Next, the worker fastens the fourth member 89 to the second member 82 and the third member 83 by fastening. As a result, the filter fixing part 80 and the active filter device 90 are fixed, and the filter fixing process S3 is completed. Note that the filter fixing process S3 can be performed at any time as long as it is completed by the start of the second fastening process S5 described later, and it does not need to be performed immediately after the first fastening process S2. For example, the filter fixing step S3 may be performed before the start of the fastening release step S1, after the fastening release step S1, or after the temporary tightening step S4 described later. Also, for example, if there are multiple workers, the filter fixing step S3 may be performed in parallel with the fastening release step S1, the first fastening step S2, and the temporary tightening step S4.

[0073] After the filter fixing process S3, the worker performs the temporary tightening process S4. The temporary tightening process S4 is the process of temporarily tightening the fixing fastener 71 to the frame-side fastening holes 67 of the upper frame member 61. Temporary tightening here means fastening the fixing fastener 71 to the frame-side fastening holes 67, but leaving room for further tightening. The worker temporarily tightens the fixing fastener 71 to the two frame-side fastening holes 67 of the upper frame member 61. As a result, the fixing fastener 71 is tightened to the point where the head 71B and the frame body 62 are separated from each of the frame-side fastening holes 67 of the upper frame member 61, and the shaft 71A is exposed between the head 71B and the frame body 62, completing the temporary tightening process S4.

[0074] After the preliminary tightening process S4, the worker performs the second fastening process S5. The second fastening process S5 includes the positioning process S51 and the final tightening process S52.

[0075] At the beginning of the second fastening process S5, the worker performs the positioning process S51. The positioning process S51 is the process of positioning the filter fixing part 80 and the active filter device 90 fixed to the filter fixing part 80 on the frame part 60 fixed to the outdoor unit 1. In the positioning process S51, the worker holds the filter fixing part 80 and the active filter device 90 and passes the fixing part fastening member 71, which was temporarily fastened in the temporary fastening process S4, through the insertion hole 87 formed in the fastening part 85 of the filter fixing part 80, from the head 71B. Next, the worker lowers the filter fixing part 80 and the active filter device 90 and passes the shaft part 71A of the temporarily fastened fixing part fastening member 71 through the fixing part side fastening hole 86 above the insertion hole 87. This easily positions the fixing part fastening member 71, the frame side fastening hole 67, and the fixing part side fastening hole 86, and the positioning process S51 is completed. Since the active filter device 90 and the filter fixing part 80 weigh, for example, about 20 kg, the workability can be improved by facilitating their positioning in the positioning process S51.

[0076] After the positioning process S51, the worker performs the final tightening process S52. In the final tightening process S52, the worker final tightens the fixing fastener 71, which has been temporarily fastened to the frame-side fastening hole 67, so that the shaft portion 71A passes through the fixing-side fastening hole 86. Here, final tightening means fixing the frame body portion 62 of the upper frame member 61 and the upper fastening portion 85 of the filter fixing portion 80 by fastening the fixing fastener 71 inserted through the frame-side fastening hole 67 and the fixing-side fastening hole 86. In addition, in the final tightening process S52, the worker inserts and fastens the fixing fastener 71 into the frame-side fastening hole 67 and the second fixing-side fastening hole 88 of the lower frame member 61, which is stacked on top of the lower frame member 61, thereby fixing the lower frame member 61 and the lower fastening portion 85. As a result, the active filter device 90 is fixed to the right side 10C or left side 10D via the filter fixing part 80 and the frame part 60, and the final tightening process S52 and the installation work are completed.

[0077] Furthermore, after the installation work, the worker may perform wiring work such as connecting the filter circuit of the active filter device 90 to the terminal box 40 with cables, etc.

[0078] [1-3. Effects, etc.] As described above, in this embodiment, the mounting device 50 is a mounting device for attaching an active filter device 90 to the right side 10C or left side 10D of the outdoor unit 1, and is provided with a filter fixing part 80 that is fixed to the active filter device 90, and a plurality of device-side fastening holes 65, each of the plurality of device-side fastening holes 65 being formed in a position that overlaps with the corner fastening hole 19A and the second housing fastening hole 18B for fastening the corner frame 19 which is a component of the outdoor unit 1, and is attached to the outdoor unit 1 by fastening the corner fastening member 19B inserted into the device-side fastening hole 65 and the corner fastening hole 19A and the second housing fastening hole 18B. This allows the active filter device 90 to be attached using the corner fastening holes 19A and the second housing fastening holes 18B formed for fastening the corner frame 19. Therefore, the workability of attaching the active filter device 90 to the outdoor unit 1 can be improved.

[0079] As in this embodiment, the mounting device 50 includes a frame portion 60 with a device-side fastening hole 65, a filter fixing portion 80 with a fixing portion-side fastening hole 86, and a frame portion 60 with a frame-side fastening hole 67. The filter fixing portion 80 and the frame portion 60 can be fixed together by fastening a fixing portion fastening member 71 inserted into the fixing portion-side fastening hole 86 and the frame-side fastening hole 67. The fixing portion-side fastening hole 86 may be connected to a through hole 87 through which the head 71B of the fixing portion fastening member 71 can pass. This allows the fixing fastener 71 to be temporarily fastened to the frame-side fastening hole 67, which does not have an insertion hole 87, and the temporarily fastened fixing fastener 71 to be passed through the insertion hole 87 from the head 71B side, thereby easily positioning the frame 60 and the filter fixing part 80. This improves the workability of the installation of the active filter device 90 to the outdoor unit 1.

[0080] As in this embodiment, the mounting device 50 may be configured such that the insertion hole 87 is formed below the fastening hole 86 on the fixing part side. As a result, when the temporarily fastened fixing member 71 for the fixing part is passed through the insertion hole 87, simply lowering the filter fixing part 80 downwards will cause the fixing member 71 to be inserted into the fixing part side fastening hole 86 and the frame side fastening hole 67, allowing the filter fixing part 80 and the frame part 60 to be fixed in that state. Therefore, the workability of the installation work of the active filter device 90 to the outdoor unit 1 can be improved.

[0081] As in this embodiment, the mounting fixture 50 may be configured such that the filter fixing part 80 and the active filter device 90 fixed to the filter fixing part 80 do not overlap with the center C1 of the right side surface 10C and the center C2 of the left side surface 10D in the horizontal direction when viewed from the left and right directions perpendicular to the right side surface 10C and the left side surface 10D. As a result, when multiple outdoor units 1 are arranged with their right side 10C and left side 10D facing each other, the filter fixing parts 80 and active filter devices 90 attached to two adjacent outdoor units 1 are positioned without interfering with each other. Therefore, the mounting space for the active filter device 90 can be reduced.

[0082] As in this embodiment, the right side 10C and left side 10D to which the mounting fixture 50 is attached may be configured to run along the front-to-back direction of the outdoor unit 1. As a result, when multiple outdoor units 1 are arranged side by side with their right side 10C and left side 10D facing each other, the filter fixing parts 80 and active filter devices 90 attached to two adjacent outdoor units 1 are arranged side by side in the front-to-back direction without interfering with each other. Therefore, the mounting space for the active filter device 90 can be reduced.

[0083] As in this embodiment, a ventilation section 17A that allows air to circulate is formed on the left side surface 10D, and the filter fixing section 80 may be configured to fix the active filter device 90 in a position that does not overlap with the ventilation section 17A when viewed from the left direction perpendicular to the left side surface 10D. This prevents the active filter device 90 from blocking the airflow between the inside and outside of the outdoor unit 1 at the ventilation section 17A. Therefore, adverse effects on the outdoor unit 1 caused by the installation of the active filter device 90 can be suppressed. In particular, in this embodiment, the ventilation section 17A serves as a passage for supply air to the gas engine 24. Therefore, adverse effects on the operation of the gas engine 24 caused by the installation of the active filter device 90 can be suppressed.

[0084] In this embodiment, the method for attaching the active filter device 90 is a method for attaching the active filter device 90 to the right side 10C or left side 10D of the outdoor unit 1 using a mounting fixture 50, and includes a first fastening step S2 in which a corner fastening member 19B is inserted into the corner fastening hole 19A and the second housing fastening hole 18B for fastening the corner frame 19 which is a component of the outdoor unit 1, and into the fixture-side fastening hole 65 provided in the mounting fixture 50, and fastened. This allows the active filter device 90 to be attached using the corner fastening holes 19A and the second housing fastening holes 18B, which are formed for fastening the components of the outdoor unit 1. Therefore, the workability of attaching the active filter device 90 to the outdoor unit 1 can be improved.

[0085] As in this embodiment, the mounting method for the active filter device 90 may include a fastening release step S1 before the first fastening step S2, in which the corner fastening member 19B, which is inserted into the corner fastening hole 19A and the second housing fastening hole 18B of the outdoor unit 1 without being inserted into the fastening hole 65 on the device side, is removed. This allows the active filter device 90 to be attached using the corner fastening member 19B, which is used to fasten the corner frame 19, a component of the outdoor unit 1. Therefore, the workability of attaching the active filter device 90 to the outdoor unit 1 can be improved.

[0086] As in this embodiment, in the method for mounting the active filter device 90, the mounting fixture 50 may include a filter fixing part 80 fixed to the active filter device 90 and a frame part 60 having a fixture-side fastening hole 65 formed therein, the filter fixing part 80 having a fixing part-side fastening hole 86 and the frame part 60 having a frame-side fastening hole 67, the fixing part-side fastening hole 86 being connected to a through hole 87 through which the head 71B of the fixing part fastening member 71 can pass, and the method may include a temporary fastening step S4 in which the fixing part fastening member 71 is temporarily fastened to the frame-side fastening hole 67, and a second fastening step S5 in which the fixing part fastening member 71 is fully fastened after passing the temporarily fastened fixing part fastening member 71 through the through hole 87 from the head 71B, thereby fastening the filter fixing part 80 and the frame part 60. This allows for easy positioning and fastening of the frame portion 60 and the filter fixing portion 80. Therefore, the work efficiency of installing the active filter device 90 to the outdoor unit 1 can be improved.

[0087] (Other embodiments) As described above, Embodiment 1 has been explained as an example of the technology disclosed in this application. However, the technology in this disclosure is not limited to this and can be applied to embodiments that have been modified, replaced, added, or omitted. Furthermore, it is possible to create new embodiments by combining the components described in Embodiment 1 above. Therefore, other embodiments are illustrated below.

[0088] In Embodiment 1, an example of an outdoor unit 1 was described as an outdoor unit of a hybrid air conditioner combining a GHP and an EHP. However, the outdoor unit 1 can be any outdoor unit that may require the installation of an active filter device 90. Therefore, the outdoor unit 1 is not limited to an outdoor unit of a hybrid air conditioner. For example, the outdoor unit 1 may be an outdoor unit of an EHP or a GHP. Furthermore, the outdoor unit 1 is not limited to an outdoor unit of an air conditioner. For example, the outdoor unit 1 may be an outdoor unit of cooling equipment such as a refrigerated display case or a cold storage warehouse.

[0089] In Embodiment 1, it was explained that the through-hole 87, configured to allow the head 71B of the fixing fastening member 71 to pass through, is formed in connection with the fixing fastening hole 86, but this is just one example. For example, the through-hole 87, configured to allow the head 71B of the fixing fastening member 71 to pass through, may be formed in the frame member 61 in connection with the frame fastening hole 67. In this case, the frame fastening hole 67 is a through-hole without internal threads, and the fixing fastening hole 86 is a through-hole with internal threads formed on the inside. In this case, in the temporary fastening step S4, the fixing fastening member 71 is temporarily fastened to the fixing fastening hole 86, and in the positioning step S51, the temporarily fastened fixing fastening member 71 is inserted from the head 71B side into the through-hole 87 connected to the frame fastening hole 67. Furthermore, in this case, by forming the through-hole 87 above the frame-side fastening hole 67, the fastening member 71 for the fixing part, which is inserted into the through-hole 87 from the head portion 71B side, can be easily positioned by lowering it downwards.

[0090] In other words, one of the fastening holes 86 on the fixing part side or the fastening hole 67 on the frame side may be connected to a through hole 87 through which the head 71B of the fastening member 71 for the fixing part can pass. Alternatively, the through hole 87 may be formed on the lower side of the fastening hole 86 on the fixing part side or on the upper side of the fastening hole 67 on the frame side. Furthermore, in the temporary fastening step S4, the fastening member 71 for the fixing part may be temporarily fastened to the other of the fastening holes 86 on the fixing part side or the fastening hole 67 on the frame side that is not connected to the through hole 87, and in the second fastening step S5, the temporarily fastened fastening member 71 for the fixing part may be passed through the through hole 87 from the head 71B, and then the fastening member 71 for the fixing part may be fully fastened to fasten the filter fixing part 80 and the frame part 60.

[0091] In Embodiment 1, it was explained that the mounting fixture 50 and the active filter device 90 can be attached to the right side 10C and the left side 10D of the housing 10 of the outdoor unit 1, but this is just one example. For example, the mounting fixture 50 and the active filter device 90 may be attached to the front 10A or the rear 10B of the outdoor unit 1.

[0092] In this embodiment, the mounting device 50 is attached to the housing 10 by inserting and fastening a corner fastening member 19B, which is a component of the outdoor unit 1, into the device-side fastening hole 65, the corner fastening hole 19A, and the second housing fastening hole 18B. However, this is just one example. For example, the device-side fastening hole 65 may be fastened together with other fastening holes besides the corner frame 19, such as the panel-side fastening hole 17B and the first housing fastening hole 18A. Also, a new fastening member may be used to fasten the device-side fastening hole 65 instead of the corner fastening member 19B that was originally fastened to the outdoor unit 1.

[0093] Since the embodiments described above are for illustrative purposes only, various modifications, substitutions, additions, omissions, etc., can be made within the claims or their equivalents.

[0094] (Note) Based on the above description of embodiments, the following technologies are disclosed. (Technical 1) A mounting device for attaching an active filter device to the side of an outdoor unit, comprising a filter fixing portion to which the active filter device is fixed, and a plurality of device-side fastening holes, each of the plurality of device-side fastening holes being formed in a position that overlaps with the outdoor unit-side fastening holes for fastening the components of the outdoor unit, and the mounting device being attached to the outdoor unit by fastening a first fastening member inserted into the device-side fastening holes and the outdoor unit-side fastening holes. This allows the active filter device to be attached using the fastening holes on the outdoor unit side that are formed for fastening the components of the outdoor unit. Therefore, the work efficiency of attaching the active filter device to the outdoor unit can be improved.

[0095] (Technology 2) The mounting device according to Technology 1, comprising a frame portion having the fastening holes on the device side, the filter fixing portion having the fastening holes on the fixing portion side, the frame portion having the fastening holes on the frame side, the filter fixing portion and the frame portion being fixed together by fastening a second fastening member inserted into the fastening holes on the fixing portion side and the fastening holes on the frame side, and the fastening holes on the fixing portion side or the fastening holes on the frame side being connected to through holes through which the heads of the second fastening members can pass. This allows the second fastening member to be temporarily fastened to the fastening hole on the fixing part side and the fastening hole on the frame side that does not have a through hole, and then the temporarily fastened second fastening member can be passed through the through hole to easily position the frame and the filter fixing part. Therefore, the workability of installing the active filter device to the outdoor unit can be improved.

[0096] (Technical 3) The mounting device according to Technical 2, wherein the insertion hole is formed below the fastening hole on the fixing part side, or above the fastening hole on the frame side. As a result, when the temporarily fastened second fastening member is passed through the insertion hole, simply lowering the filter fixing part downwards will cause the second fastening member to be inserted into the fastening hole on the fixing part side and the fastening hole on the frame side, allowing the filter fixing part and the frame part to be fixed in that state. Therefore, the workability of installing the active filter device to the outdoor unit can be improved.

[0097] (Technical 4) The mounting fixture according to any one of Technical 1 to 3, wherein the filter fixing part and the active filter device fixed to the filter fixing part do not overlap with the center of the side surface in the horizontal direction when viewed from a direction perpendicular to the side surface. As a result, when multiple outdoor units are lined up facing each other, the filter mounting parts and active filter devices attached to two adjacent outdoor units are positioned without interfering with each other. Therefore, the installation space required for the active filter device can be reduced.

[0098] (Technical 5) The side surface is the mounting device described in Technical 4, which is aligned with the front-to-back direction of the outdoor unit. As a result, when multiple outdoor units are lined up facing each other, the filter fixing parts and active filter devices attached to two adjacent outdoor units are positioned side by side in the front-to-back direction without interfering with each other. Therefore, the installation space required for the active filter device can be reduced.

[0099] (Technical 6) The mounting device according to any one of Technical 1 to 5, wherein a ventilation portion is formed on the side surface, and the filter fixing portion fixes the active filter device at a position that does not overlap with the ventilation portion when viewed from a direction perpendicular to the side surface. This prevents the active filter device from blocking the airflow between the inside and outside of the outdoor unit at the ventilation points. Therefore, it is possible to suppress any adverse effects on the outdoor unit caused by the installation of the active filter device.

[0100] (Technical 7) A method for attaching an active filter device to the side of an outdoor unit using a mounting device, the method comprising a first fastening step of inserting a first fastening member into a fastening hole on the outdoor unit side for fastening components of the outdoor unit and a fastening hole on the device side provided in the mounting device, and fastening them. This allows the active filter device to be attached using the fastening holes on the outdoor unit side that are formed for fastening the components of the outdoor unit. Therefore, the work efficiency of attaching the active filter device to the outdoor unit can be improved.

[0101] (Technical 8) The method for installing an active filter device according to Technical 7, further comprising a fastening release step of removing the first fastening member, which has been inserted into the fastening hole on the outdoor unit side of the outdoor unit and fastened, before the first fastening step, without being inserted into the fastening hole on the device side. This allows the active filter device to be attached using the first fastening member used to fasten the components of the outdoor unit. Therefore, the work efficiency of attaching the active filter device to the outdoor unit can be improved.

[0102] (Technical 9) The mounting device comprises a filter fixing portion fixed to the active filter device and a frame portion having a fastening hole on the device side, wherein the filter fixing portion has a fastening hole on the fixing portion side and the frame portion has a fastening hole on the frame side, and one of the fastening hole on the fixing portion side or the fastening hole on the frame side is connected to a through hole through which the head of the second fastening member can pass, and the mounting method for an active filter device according to Technical 7 or 8 includes a temporary fastening step of temporarily fastening the second fastening member to the other of the fastening hole on the fixing portion side or the fastening hole on the frame side, and a second fastening step of passing the temporarily fastened second fastening member through the through hole from the head, and then fully fastening the second fastening member to fasten the filter fixing portion and the frame portion. This allows for easy positioning and fastening of the frame and filter fixing parts. Therefore, the work efficiency of installing the active filter device to the outdoor unit can be improved. [Industrial applicability]

[0103] This disclosure is applicable to mounting fixtures and methods for mounting active filter devices. Specifically, this disclosure is applicable to mounting fixtures and methods for mounting active filter devices to outdoor units such as GHP, EHP, or hybrid GHP / EHP systems, or to outdoor units of cooling equipment. [Explanation of Symbols]

[0104] 1 Outdoor unit 10 cabinets 10A front 10B Back 10C Right side (side of the outdoor unit) 10D Left side (side of the outdoor unit) 11 Inlet 13 Air outlet 14 Exhaust Top 15 Machine room 17. Enclosure Panel 17A Ventilation section 17B Panel-side fastening holes 17C Panel fastening component 18. Enclosure Frame 18A First housing fastening hole 18B Second housing fastening hole (outdoor unit side fastening hole) 19. Corner frame (component of the outdoor unit) 19A Corner fastening hole (outdoor unit side fastening hole) 19B Corner fastening member (first fastening member) 21 Heat exchanger 22 E-side compressor 23 G-side compressor 24 Gas Engines 25 Air Cleaner 26 Engine belt 27 Oil Tank 27A opening 28 Oil pump 29 Cooling water three-way valve 30 Refrigerant Low Pressure Sensor 31 Refrigerant High Pressure Sensor 32 E-side high-voltage switch 33 Oil Separator 34 Oil return valve 35 Four-way valve 36 Subcooling Heat Exchanger 37. E-side electrical box 38 G-side electrical box 39 Starter power 40 Terminal Boxes 41 Cooling water pump 42 Exhaust gas heat exchanger 43 Neutralizer 44 Fuel shut-off valve 45 Zero Governor 46 Sub-evaporator 47. Gas refrigerant shut-off valve 48 Liquid refrigerant shut-off valve 49 Drycore 50 Mounting fixtures 60 Frame section 61 Frame members 62 Frame main body 63 Frame fastening section 65 Fastening holes on the device side 67 Frame-side fastening holes 71 Fastening member for fixed part (second fastening member) 71A Shaft 71B Head 80 Filter fixing part 81 First Member 82 Second Member 83 Third Member 84 Main body 85 Fastening part 86 Fixed part side fastening hole 87 Through hole 88 2nd fixed part side fastening hole 89 Fourth member 90 Active Filtering Device 91 Casing 93 Lid member C1 center C2 center L1 distance L2 distance

Claims

1. A mounting device for attaching an active filter device to the side of an outdoor unit, The active filter device and the filter fixing part to which it is fixed, Multiple fastening holes on the device side are provided, Each of the multiple fastening holes on the device side is formed in a position that overlaps with the fastening holes on the outdoor unit side for fastening the components of the outdoor unit, The device is attached to the outdoor unit by fastening the first fastening member inserted into the fastening hole on the device side and the fastening hole on the outdoor unit side. Mounting fixture.

2. The frame portion comprises the fastening hole on the device side, The filter fixing portion has a fixing portion side fastening hole formed therein. The frame portion has frame-side fastening holes formed therein. The filter fixing portion and the frame portion can be fixed together by fastening a second fastening member inserted into the fastening hole on the fixing portion side and the fastening hole on the frame side. The fastening hole on the fixing part side or the fastening hole on the frame side is connected to a through hole through which the head of the second fastening member can pass. The mounting device according to claim 1.

3. The through-hole is formed below the fastening hole on the fixing part side, or above the fastening hole on the frame side. The mounting device according to claim 2.

4. The filter fixing portion and the active filter device fixed to the filter fixing portion are such that, when viewed from a direction perpendicular to the side surface, they do not overlap with the center of the side surface in the horizontal direction. The mounting device according to claim 1.

5. The aforementioned side is aligned with the front-to-back direction of the outdoor unit. The mounting device according to claim 4.

6. A ventilation section is formed on the aforementioned side surface, The filter fixing portion fixes the active filter device in a position that does not overlap with the ventilation portion when viewed from a direction perpendicular to the side surface. The mounting device according to claim 1.

7. A method for attaching an active filter device to the side of an outdoor unit using a mounting fixture, The first fastening step includes inserting the first fastening member into the fastening hole on the outdoor unit side for fastening the components of the outdoor unit and the fastening hole on the device side provided in the mounting device, and fastening them together. Installation method for an active filter device.

8. Prior to the first fastening step, the first fastening member, which was inserted into the fastening hole on the outdoor unit side of the outdoor unit and fastened, is removed. A method for mounting an active filter device according to claim 7.

9. The mounting device comprises a filter fixing portion that is fixed to the active filter device, and a frame portion in which fastening holes on the device side are formed. The filter fixing portion has a fixing portion side fastening hole formed therein. The frame portion has frame-side fastening holes formed therein. Either the fastening hole on the fixing part side or the fastening hole on the frame side is connected to a through hole through which the head of the second fastening member can pass. A preliminary fastening step of temporarily fastening the second fastening member to the fastening hole on the fixing part side or the other of the fastening hole on the frame side, The process includes a second fastening step in which the temporarily fastened second fastening member is passed through the insertion hole from the head, and then the second fastening member is fully fastened to fasten the filter fixing portion and the frame portion. A method for mounting an active filter device according to claim 7 or 8.

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