CN218243318U

CN218243318U - Frequency converter cabinet and air conditioning system

Info

Publication number: CN218243318U
Application number: CN202221855698.1U
Authority: CN
Inventors: 李子言; 孙瑞祥; 刘玲
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2023-01-06
Anticipated expiration: 2032-07-06

Abstract

The utility model provides a converter cabinet, air conditioning system, converter cabinet wherein, including having the open-ended box and can sealing the open-ended door body, door body detachably connects on the box, and the box includes two side founds the wall that relative interval set up and connects in two sides founds the wall after between the wall, and the top detachably that two sides found the wall and found the wall after is connected with the top cap so that the top of box is in the encapsulated situation. According to the utility model discloses, the detachably top cap can make the electric components and parts of part incasement pass through the top of box and realize loading and unloading and maintain, each components and parts of incasement can be by the compacter of overall arrangement, can form the front and back layering overall arrangement of box, and need not to dismantle the components and parts that reside in the front floor when loading and unloading or maintaining the components and parts of back floor, loading and unloading and maintenance process have greatly been facilitated, the operation efficiency is improved, the whole volume of the cabinet body is littleer, and the further promotion of its protection level can be convenient for to littleer cabinet body volume, power density correspondingly also obtains improving.

Description

Frequency converter cabinet and air conditioning system

Technical Field

The utility model belongs to the technical field of air conditioning, concretely relates to converter cabinet, air conditioning system.

Background

With the continuous progress and development of electronic technology under the current situation, the development of the frequency converter technology and the equipment thereof is increasingly perfect. For high-power frequency converters, the frequency converters have been widely applied in the fields of heavy industry, water supply construction systems, central air conditioners, elevator operation and the like. However, the development and development of the domestic frequency converter do not form a complete system, the structural design of the frequency converter is not mature, and based on the convenient requirements of the loading, unloading and maintenance of components, the current high-power frequency converter is large and not compact in size, low in protection level and difficult to install and maintain, and the development requirements of miniaturization, high power density and high protection of the frequency converter cannot be met.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a converter cabinet, air conditioning system can overcome in the correlation technique for the convenience of the loading and unloading maintenance of each electrical components in the cabinet, and the converter is bulky, the design layout is compact enough not enough.

In order to solve the problem, the utility model provides a converter cabinet, including having the open-ended box and can sealing the open-ended door body, door body detachably connect in on the box, the box includes two side founds the wall that relative interval set up and connects in two the side founds the wall after between the wall, two the side founds the wall and the top detachably that the wall was found after is connected with the top cap so that the top of box is in the encapsulated situation.

In some embodiments, the top ends of the two side vertical walls and the rear vertical wall have a bending plane extending towards the inner side of the box body, and the top cover is connected with the bending plane through a screw; and/or a supporting piece is connected between the top ends of the two side vertical walls and is positioned on one side of the door body.

In some embodiments, one of the two side walls has a first access opening, and a first shell plate is detachably connected to the first access opening, and a bearing power supply is connected to one side of the first shell plate facing the inner side of the box body.

In some embodiments, a main control unit is assembled inside the box body, the main control unit includes a main control assembly frame, the main control assembly frame has at least two layers from one side of the door body toward the inner side of the box body, the innermost layer is a capacitor module assembly layer for assembling a capacitor and a busbar, and an assembly inlet of the capacitor module assembly layer is matched with the position of the first access opening.

In some embodiments, the main control assembly frame has a first side plate, the first side plate and the first outer shell plate are arranged in parallel and at an interval, and a capacitor assembly and disassembly operation hole is formed in a position of the first side plate corresponding to the capacitor module assembly layer.

In some embodiments, the master control assembly frame further includes a power component assembly layer on a side of the capacitor module assembly layer adjacent to the door body.

In some embodiments, the main control assembly frame further includes an opening and closing assembly layer hinged to a side of the power component assembly layer close to the door body.

In some embodiments, the opening and closing assembly layer has a first side close to the door body and a second side close to the power component assembly layer, the first side is assembled with a motor plate, and the second side is assembled with a main controller.

In some embodiments, a main control wiring board and a frequency converter wiring board are further assembled in the box body, wherein the frequency converter wiring board is connected to the top of the main control assembly frame obliquely relative to the horizontal plane.

In some embodiments, a control device is further assembled in the box body, and the control device is positioned at the top of the main control assembly frame and in an area above the frequency converter wiring board.

In some embodiments, the box body further includes a bottom supporting frame, the bottom of the two side walls and the bottom of the rear standing wall are fixedly connected to three adjacent corresponding side walls of the bottom supporting frame, and the bottom of the main control assembling frame is detachably connected to the top surface of the bottom supporting frame.

In some embodiments, the bottom support frame is a hollow structure with an in-box circulation heat sink member disposed in the hollow region.

In some embodiments, the in-box circulation heat sink includes an air duct housing, the air duct housing and the wall of the box body and/or the bottom support frame form an airflow duct of the in-box circulation heat sink, and an evaporator assembly and a fan assembly are disposed within the air duct housing.

In some embodiments, the air duct housing is configured with an air inlet and an air outlet, the evaporator assembly and the fan assembly are respectively disposed corresponding to the air inlet and the air outlet, and the main control assembly frame is located at an upper region of the air outlet.

In some embodiments, the fan assembly includes a fan mount and a fan assembled to the fan mount, the duct housing having a first assembly opening therein, the fan mount being removably coupled to the duct housing through the first assembly opening; and/or, the evaporator assembly comprises an evaporator mounting plate, a second assembly opening penetrating into the air duct shell is formed in the rear vertical plate, and the evaporator assembly is connected into the air duct shell in a drawable mode through the second assembly opening.

In some embodiments, the tank further comprises a bottom wall at the bottom of the bottom support frame, the bottom wall having a drain pipe removably connected thereto.

The utility model also provides an air conditioning system, including foretell converter cabinet.

The utility model provides a pair of converter cabinet, air conditioning system, because the box except having the opening that the AND gate body corresponds can openly load and unload and maintain the electrical components in the box at the box, the detachably top cap can make the electrical components of part incasement realize loading and unloading and maintenance through the top of box, so, each components and parts of incasement can be by the compacter of overall arrangement, can form the front and back layering overall arrangement of box, and need not to dismantle the components and parts on front floor when loading and unloading or maintaining the components and parts of back floor, greatly facilitate loading and unloading and maintenance process, improve the operating efficiency, the whole volume of the cabinet body is littleer, and the further promotion of its protection level can be convenient for to littleer cabinet body volume, power density is corresponding also to be improved.

Drawings

Fig. 1 is a schematic perspective view of a frequency converter cabinet according to an embodiment of the present invention (with a door in an open state);

FIG. 2 is a schematic illustration of an assembly relationship between the master assembly frame and the bottom support frame of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 2 from another angle;

fig. 4 is a schematic view of a disassembled structure of the frequency converter cabinet in fig. 1 (arrows in the figure indicate assembly paths of relevant parts);

FIG. 5 is a schematic view of the disassembled structure of FIG. 4 from another view angle (the arrows in the figure indicate the assembly paths of the relevant components);

fig. 6 is a bottom view of fig. 1 (arrows in the figure indicate the assembly path of the relevant components).

The reference numerals are represented as:

1. a main control unit; 2. a patch panel component; 3. a circulating heat dissipation component in the box; 4. a control device; 5. a strong current device; 6. a top cover; 7. opening and closing the assembly layer; 8. a power component assembly layer; 9. a capacitor module assembly layer; 10. a capacitor dismounting operation hole; 11. a main controller; 12. a motor plate; 13. a capacitor; 14. a busbar; 16. a heat sink; 17. a power module; 18. a capacitive fixing element; 21. a main control wiring board; 22. a frequency converter wiring board; 23. a main control wiring board metal plate; 24. a frequency converter wiring board metal plate; 31. an air duct housing; 32. a fan mount; 33. a fan; 34. an evaporator assembly; 35. a drain pipe; 36. square metal plates; 41. rectangular metal plates; 42. fixing channel steel; 43. a charging resistor; 51. a bearing power supply; 52. a first shell plate; 53. and (6) routing metal plates.

Detailed Description

Referring to fig. 1 to 6 in combination, according to the embodiment of the present invention, a frequency converter cabinet is provided, which includes a box body with an opening (which can be formed by bending a sheet metal part and full-welding) and a door body capable of sealing the opening, the door body is detachably connected to the box body, the box body includes two side vertical walls arranged at a relative interval and a rear vertical wall connected between the two side vertical walls, and the top ends of the two side vertical walls and the rear vertical wall are detachably connected with a top cover 6 to make the top of the box body in a closed state. Among this technical scheme, because the box except having the opening that corresponds with the door body can openly load and unload and maintain the electrical components in the box at the box, detachably top cap 6 can make the electrical components of part incasement pass through the top of box and realize loading and unloading and maintenance, so, each components and parts of incasement can be by the compacter of overall arrangement, can form the front and back layering overall arrangement of box, and need not to dismantle the components and parts that live in the front when loading and unloading or maintaining the components and parts of back layer, greatly facilitate loading and unloading and maintenance process, improve the operating efficiency, the whole volume of the cabinet body is littleer, and the further promotion of its protection level can be convenient for to littleer cabinet body volume, power density also correspondingly improves. In one embodiment, two side vertical walls and back vertical wall are bent through a sheet metal component to form a roughly U-shaped structure, thereby guarantee the leakproofness of box, promote the protection level of converter cabinet.

In some embodiments, the top ends of the two side vertical walls and the rear vertical wall are provided with a bending plane extending towards the inner side of the box body, the top cover 6 is connected with the bending plane through a screw, and the bending plane can effectively support the top cover 6 and facilitate the assembly and disassembly of the top cover 6. Support pieces are connected between the top ends of the two side vertical walls and located on one side of the door body, the side vertical walls and the rear vertical wall on the two sides are connected into a rectangular frame through the support pieces, and the structural stability and the structural strength of the box body after the top cover 6 is detached are guaranteed. This support piece for example a sheet metal component, its and two side founds the wall and the back founds the plane of bending of wall and forms the dismouting plane of top cap 6 jointly, and support piece's both ends can respectively with weld between two side founds the wall, guarantee the reliable stability of box structure.

In some embodiments, one of the two side walls has a first access opening, to which a first housing plate 52 is detachably connected, and to the side of the first housing plate 52 facing the inside of the cabinet a bearing power supply 51 is connected, which bearing power supply 51 supplies a magnetic bearing for a compressor with which the air conditioning system has. In this embodiment, the bearing power supply 51 can be mounted and dismounted through the first access opening without through the opening area of the box, so that the bearing power supply 51 can be located at the inner position of the box, and other necessary components can be mounted on the outer side of the box in a stacked manner without affecting the mounting and dismounting of the bearing power supply 51.

The inside equipment of box has main control unit 1, main control unit 1 includes main control equipment frame, that is, this main control equipment frame is main control unit 1's each electrical components's equipment carrier, main control equipment frame has at least two-layer by door body one side towards the inboard of box, be in the most inboard be electric capacity module assembled layer 9, be used for assembling electric capacity 13 and female 14 arranging, electric capacity module assembled layer 9's equipment income mouth and the position looks adaptation of first access hole, also be in electric capacity 13 in the electric capacity module assembled layer 9 of most inlayer and female dismouting of arranging 14 and can assemble in the dismantlement via first access hole department after it assembles in the box, need not to dismantle each components and parts in its outside this moment, the maintenance is more convenient. When the capacitor 13 and the busbar 14 are assembled for the first time, since the main control assembly frame is not assembled in the box body, the components such as the capacitor 13 and the like can be assembled on the main control assembly frame outside the box body, but once the main control assembly frame is assembled in the box body, the capacitor 13 and the busbar 14 can be assembled and disassembled through the first access hole, which is particularly convenient.

Specifically, the frequency converter cabinet further comprises a strong current device 5 which is installed on one of the two side vertical walls, the strong current device 5 (plate) is connected with 540V direct current voltage, wherein the two bearing power supplies 51 are fixed on a detachable first outer shell plate 52 through bolts, if the busbar 14 and the capacitor 13 need to be disassembled and assembled, the two bearing power supplies 51 can be disassembled and assembled together with the first outer shell plate 52, and then the busbar 14 or the capacitor 13 can be disassembled and assembled; the trace metal plate 53 can be used to fix the conductive wire of the strong electric device 5 and guide the trace path.

The main control assembly frame is provided with a first side plate, the first side plate and the first outer shell plate 52 are arranged at intervals in parallel, the capacitor 13 is connected with the first side plate through a capacitor fixing piece 18 (for example, a bent sheet metal part with a threaded hole), and a capacitor disassembling and assembling operation hole 10 is formed in the position, corresponding to the capacitor module assembly layer 9, of the first side plate, so that the capacitor disassembling and assembling operation hole 10 can be used for realizing contact of the connection relation of the capacitor fixing piece 18, finally the capacitor 13 is separated from the main control assembly frame, and a channel formed after the capacitor 13 is further disassembled through a top cover.

In some embodiments, the main control assembly frame further includes a power component assembly layer 8, the power component assembly layer 8 is located on one side of the capacitor module assembly layer 9 close to the door body, the power component assembly layer 8 is used for assembling a power module 17 and a corresponding heat sink 16, etc., and the power component assembly layer is located outside the capacitor module assembly layer 9 and does not form a barrier for the assembly components in the capacitor module assembly layer 9.

The main control assembly frame further comprises an opening and closing assembly layer 7, the opening and closing assembly layer 7 is hinged to one side, close to the door body, of the power component assembly layer 8, and can be opened or closed according to actual needs (whether maintenance is carried out) to prevent the power component assembly layer 8 from being shielded when maintenance is carried out. The equipment layer 7 that opens and shuts has the first side that is close to the door body and the second side that is close to power component equipment layer 8, and the equipment has motor board 12 on the first side, and the equipment has main control unit 11 on the second side to realized motor board 12 and main control unit 11's compatible integration, motor board 12 and main control unit 11 are in outmost, can prevent to be in the bad problem emergence of heat dissipation that inside probably appears.

In a specific embodiment, the main control unit 1 includes a main controller 11, a motor board 12, a capacitor 13, a busbar 14, and a power module 17; the main controller 11 and the motor board 12 are installed on a frame (which can be regarded as a rotary door body) of the opening and closing assembly layer 7 (the first layer), the motor board 12 is installed on the front side, and the main controller 11 is installed on the back side; the radiator 16 is arranged on a fixed metal plate of the power component assembly layer 8 (a second layer), and the surface of the radiator 16 is provided with a power module 17; the bottom bolt of the capacitor 13 is firstly installed on the capacitor fixing piece 18 and then is installed on the fixing metal plate of the capacitor module assembly layer 9 (the third layer), and a capacitor dismounting operation hole 10 (see fig. 3) is formed in the bottom bolt, so that the bottom bolt of the capacitor 13 can be directly operated, and the capacitor fixing piece 18 can be operated to meet the requirements of installation and dismounting of the capacitor 13; the busbar 14 is bolted between the capacitor 13 on the right side of the main control unit 1 and the power module 17 (see fig. 4).

In some embodiments, the box body is further assembled with a terminal block component 2, such as a main control terminal block 21 and a frequency converter terminal block 22, wherein the frequency converter terminal block 22 is connected to the top of the main control assembly frame in an inclined manner (e.g., 45 °) relative to the horizontal plane, so that the shielding of other components in the top area can be reduced, the operation view of an operator is wider, and the wiring operation is also facilitated. The frequency converter wiring board 22 can be connected with a main control assembly frame through the frequency converter wiring board metal plate 24 after being assembled through the frequency converter wiring board metal plate 24, waist-shaped through holes are formed in the left side and the right side of the frequency converter wiring board metal plate 24, wires penetrate through wires and are used for fixing limitation, messy prevention is achieved, the metal plate folding edge is provided with a grounding hole and a wire fixing hole, the grounding hole is used for grounding of communication wires, and the wire fixing hole is used for fixing the wires. The main control wiring board 21 is only connected with wires required by the main controller 11 and is arranged on the main control wiring board metal plate 23, and the hem of the main control wiring board metal plate 23 is provided with a grounding hole for grounding the communication wires; if the main controller 11 is not installed, the main controller can be directly and synchronously removed.

Correspondingly, a control device 4 is further assembled in the box body, the control device 4 is located at the top of the main control assembly frame and located in the area above the frequency converter wiring board 22, and the control device 4 is mostly switch components with state change and placed in the area above the frequency converter wiring board 22, so that an operator can observe the state of the switch components. The frequency converter wiring board 22 is assembled to the main control assembly frame so that it can be installed or removed simultaneously with the main controller 11. The aforementioned control device 4 is a part formed by various logic control devices, and may specifically include a circuit breaker, a relay, a contactor, and the like, according to design requirements. The control device 4 is arranged on the rectangular metal plate 41 and can be integrally assembled and disassembled in a modular manner; the rectangular metal plate 41 is padded through the fixed channel steel 42 on the two sides, and the space after padding is provided with the charging resistor 43, so that modularization is realized, and the space is fully utilized.

In some embodiments, the box body is internally provided with a bottom supporting frame, the bottoms of the two side vertical walls and the bottom of the rear vertical wall are fixedly connected to three adjacent corresponding side vertical surfaces of the bottom supporting frame, the requirement of the protection grade of the box body is met, the bottom of the main control assembling frame is detachably connected to the top surface of the bottom supporting frame, namely the bottom of the main control assembling frame is supported by the bottom supporting frame, the structure is reliable and stable, and furthermore, the top of the main control assembling frame can be reliably connected with the rear vertical wall through a threaded connecting piece.

Bottom braced frame is hollow structure, be provided with case inner loop heat dissipation part 3 in the hollow region, through setting up case inner loop heat dissipation part 3 in the hollow region, also set up in the bottom region of box, can make the structure of whole box compacter, the overall arrangement is more reasonable, the width of box can effectively be reduced to this kind of mode, be particularly useful for the less condition to space width, the outward appearance of box is also more regular, the condition of standing wall department protrusion heat dissipation part in a certain side among the prior art can not appear.

In some embodiments, the intra-box circulation heat dissipation component 3 includes an air duct housing 31, the air duct housing 31 and a wall body of the box body and/or the bottom support frame form an air flow air duct of the intra-box circulation heat dissipation component, an evaporator assembly 34 and a fan assembly are disposed in the air duct housing 31, an air inlet and an air outlet are configured on the air duct housing 31, the evaporator assembly 34 and the fan assembly are respectively disposed corresponding to the air inlet and the air outlet, and the main control assembly frame is located in an upper region of the air outlet, so as to form efficient heat dissipation for each component in the box body, particularly the main control component 1. The evaporator assembly 34 may be a refrigerant heat exchanger, and it efficiently dissipates heat to the box body by using the refrigerant in the air conditioning system, and the heat dissipation of the internal circulation can effectively ensure the insulation protection grade of the frequency converter cabinet.

In some embodiments, the fan assembly includes a fan mount 32 and a fan 33 assembled to the fan mount 32, the duct housing 31 has a first assembly opening, and the fan mount 32 is connected to the duct housing 31 in a drawable manner through the first assembly opening; and/or, the evaporator assembly 34 includes an evaporator mounting plate, the rear vertical plate has a second assembly port penetrating into the air duct housing 31, and the evaporator assembly 34 is connected in the air duct housing 31 in a drawable manner through the second assembly port. That is, the fan assembly and the evaporator assembly 34 can be assembled and disassembled with the air duct shell 31 by drawer-type pull-out structure, so that the maintenance and the assembly are very convenient.

In some embodiments, the box still includes the diapire, and the diapire is in bottom braced frame's bottom, and detachably is connected with drain pipe 35 on the diapire, to converter cabinet transportation, demolish drain pipe 35 from the diapire, and converter cabinet can be steady place on haulage vehicle's plate body structure this moment, need not to increase corresponding overhead structure, guarantees the reliable stability of converter cabinet in the transportation, can also effectively prevent the potential destruction to drain pipe 35 in the transportation certainly. In particular, the drain pipe 35 may be welded to a square sheet metal 36, by means of which square sheet metal 36 a detachable connection to the bottom wall is achieved.

According to the utility model discloses an embodiment still provides an air conditioning system, including foretell converter cabinet.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a frequency converter cabinet, is including having the open-ended box and can sealing the open-ended door body, door body detachably connect in on the box, its characterized in that, the box includes two side founds the wall that relative interval set up and connects in two the back founds the wall between the wall of side, two the side founds the wall and the top detachably of back founding the wall is connected with top cap (6) so that the top of box is in the closure state.

2. Frequency converter cabinet according to claim 1, characterized in that the top ends of the two side and rear standing walls have a bending plane extending towards the inside of the cabinet, the top cover (6) being connected with the bending plane by screws; and/or a supporting piece is connected between the top ends of the two side vertical walls and is positioned at one side of the door body.

3. Frequency converter cabinet according to claim 1, characterized in that one of the two side standing walls is provided with a first access opening, to which a first shell plate (52) is detachably connected, and to which side of the first shell plate (52) facing the inside of the cabinet is connected a bearing power supply (51).

4. The frequency converter cabinet according to claim 3, wherein a main control unit (1) is assembled inside the cabinet body, the main control unit (1) comprises a main control assembly frame, at least two layers are arranged on the main control assembly frame from one side of the door body to the inner side of the cabinet body, a capacitor module assembly layer (9) is positioned on the innermost side of the main control assembly frame and is used for assembling a capacitor (13) and a busbar (14), and an assembly inlet of the capacitor module assembly layer (9) is matched with the position of the first access opening.

5. The frequency converter cabinet according to claim 4, wherein the main control assembly frame has a first side plate, the first side plate and the first outer shell plate (52) are arranged in parallel and at a distance, and a capacitor assembly and disassembly operation hole (10) is formed in a position of the first side plate corresponding to the capacitor module assembly layer (9).

6. The frequency converter cabinet according to claim 4, wherein the main control assembly frame further comprises a power component assembly layer (8), and the power component assembly layer (8) is arranged on one side of the capacitor module assembly layer (9) close to the door body.

7. The frequency converter cabinet according to claim 6, wherein the main control assembly frame further comprises an opening and closing assembly layer (7), and the opening and closing assembly layer (7) is hinged to one side of the power component assembly layer (8) close to the door body.

8. The frequency converter cabinet according to claim 7, characterized in that the opening and closing assembly layer (7) has a first side close to the door body and a second side close to the power component assembly layer (8), the first side is assembled with a motor board (12), and the second side is assembled with a main controller (11).

9. Frequency converter cabinet according to claim 8, characterized in that a main control terminal board (21) and a frequency converter terminal board (22) are also assembled in the cabinet, wherein the frequency converter terminal board (22) is connected to the top of the main control assembly frame obliquely with respect to the horizontal plane.

10. Frequency converter cabinet according to claim 9, characterized in that a control device (4) is further assembled in the cabinet body, the control device (4) being at the top of the master assembly frame and in the area above the frequency converter terminal board (22).

11. The frequency converter cabinet according to claim 4, wherein a bottom supporting frame is provided in the cabinet body, bottoms of the two side walls and the rear wall are fixedly connected to three adjacent corresponding side walls of the bottom supporting frame, and the bottom of the main control assembling frame is detachably connected to the top surface of the bottom supporting frame.

12. Frequency converter cabinet according to claim 11, characterized in that the bottom supporting frame is a hollow structure in which an in-box circulating heat sink (3) is arranged.

13. The frequency converter cabinet according to claim 12, characterized in that the in-box circulation heat sink (3) comprises an air duct housing (31), the air duct housing (31) and the walls of the box body and/or the bottom support frame form an air flow duct for the in-box circulation heat sink, and an evaporator assembly (34) and a fan assembly are arranged in the air duct housing (31).

14. The frequency converter cabinet according to claim 13, wherein the air duct housing (31) is configured with an air inlet and an air outlet, the evaporator assembly (34) and the fan assembly are respectively disposed corresponding to the air inlet and the air outlet, and the main control assembly frame is located at an upper region of the air outlet.

15. Frequency converter cabinet according to claim 14, characterized in that the fan assembly comprises a fan mount (32) and a fan (33) assembled to the fan mount (32), the air duct housing (31) having a first assembly opening therein, the fan mount (32) being connected in a drawable manner in the air duct housing (31) via the first assembly opening; and/or the evaporator assembly (34) comprises an evaporator mounting plate, a second assembling port penetrating into the air duct shell (31) is formed in the rear vertical plate, and the evaporator assembly (34) is connected into the air duct shell (31) in a drawable mode through the second assembling port.

16. Frequency converter cabinet according to claim 11, wherein the cabinet further comprises a bottom wall at the bottom of the bottom support frame, to which a drain (35) is detachably connected.

17. An air conditioning system characterized by comprising the inverter cabinet of any one of claims 1 to 16.