CN216162604U - Frequency converter and air conditioning unit - Google Patents

Abstract

The utility model provides a frequency converter and an air conditioning unit, wherein the frequency converter comprises an outer box body and an assembling frame positioned in the outer box body, a first element device group is assembled on the assembling frame, the outer box body is provided with a first opening, and the assembling frame is movably connected with the outer box body so as to be pulled out of or pushed into the outer box body from the first opening in a controlled manner. According to the utility model, the assembly frame is used as an assembly carrier of the first component group, and can be movably pulled out of the outer box body when the internal components are assembled or overhauled, so that the assembly or overhauling operation space of the components is greatly increased, the components are convenient to assemble and overhaul, the assembly and design of the frequency converter are more compact, and the size of the frequency converter is smaller.

Description

Frequency converter and air conditioning unit

Technical Field

The utility model belongs to the technical field of frequency converter manufacturing, and particularly relates to a frequency converter and an air conditioning unit.

Background

Under the situation of continuous progress and development of power electronic technology, application places of frequency converters are also continuously increased, such as a cooling system of a large-scale data center and the like, and the places all require the frequency converters to have smaller volume and higher protection level, and the small volume and the high protection level can bring a series of problems of difficult assembly, inconvenient maintenance and the like. For the frequency converter, the cabinet body with small volume improves the assembly and maintenance work difficulty of components.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a frequency converter and an air conditioning unit, which can overcome the defects that the assembly and maintenance of internal components are difficult when the volume of the frequency converter is designed to be small in the related technology.

In order to solve the above problem, the present invention provides a frequency converter, including an outer box and an assembly frame located in the outer box, wherein the assembly frame is assembled with a first component device group, the outer box has a first opening, and the assembly frame is movably connected to the outer box so as to be able to be pulled out from or pushed into the outer box through the first opening in a controlled manner.

Preferably, the assembly frame is slidably connected with the outer box body.

Preferably, the outer box body comprises a top plate, a bottom plate, a front plate, a rear plate and a first side plate, the top plate, the bottom plate, the front plate, the rear plate and the first side plate are assembled to form a cuboid, and the first opening is formed in a side elevation of the cuboid, which is opposite to the first side plate; and/or the first component group comprises at least one of a micro device, a main control board, a first power supply, a second power supply, a power and heat dissipation module, a capacitor module, a terminal strip and a main breaker.

Preferably, one side of the bottom plate facing the inside of the outer box body is provided with at least two parallel slide rails, and the bottom of the assembly frame is in one-to-one correspondence with the at least two slide rails through at least two slide blocks respectively.

Preferably, a second component group is assembled in the outer box, the second component group is fixedly connected with the assembling frame, and the weight of the second component group is greater than that of the first component group.

Preferably, the second component group comprises a reactor, and the reactor is fixedly connected with the slide rail; and/or the second component group comprises an evaporator which is fixedly connected to the inner side wall of the outer box body.

Preferably, the assembly frame has a space for avoiding, and when the assembly frame is pushed into the outer box, the second component device group is assembled on the outer box corresponding to the space for avoiding.

Preferably, an evaporator cover is connected to the assembly frame corresponding to the abdicating space, and the evaporator cover has a channel allowing the evaporator to enter.

Preferably, the assembly frame includes a first side vertical frame corresponding to the first opening, the first side vertical frame is connected with a main control panel assembly panel and a first power supply assembly panel, the main control panel assembly panel and the first power supply assembly panel are stacked at intervals along a direction from the rear panel to the front panel, and the main control panel assembly panel and the first power supply assembly panel are hinged to the first side vertical frame.

Preferably, a second side plate assembly is detachably connected to one side of the first side upright frame, which is far away from the first side plate.

Preferably, the second side plate assembly comprises an inner side plate close to the first side standing frame and an outer side plate welded to the inner side plate far away from the first side standing frame, the inner side plate is riveted with a connecting nut, and the second side plate assembly is connected with the first side standing frame through the connecting nut.

Preferably, the inner side plate has a radiator support cover plate formed thereon, and the rear plate is configured with a first through-hole to which the radiator support cover plate is detachably coupled when the assembly frame is pushed into the outer box.

Preferably, the front plate is hinged with the first side plate; and/or two adjacent plates in the top plate, the bottom plate, the rear plate and the first side plate are welded.

The utility model also provides an air conditioning unit which comprises the frequency converter.

According to the frequency converter and the air conditioning unit, the assembly frame is used as an assembly carrier of the first component group, and can be movably pulled out of the outer box body when the inner components are assembled or overhauled, so that the assembly or overhauling space of the components is greatly increased, the assembly and overhauling of the components are facilitated, the assembly and design of the frequency converter are more compact, and the size of the frequency converter is smaller.

Drawings

Fig. 1 is a schematic perspective view of a frequency converter according to an embodiment of the present invention (the assembly frame is pulled out from the outer box);

fig. 2 is another schematic perspective view of the frequency converter according to the embodiment of the present invention (the assembly frame is pushed into the outer box);

FIG. 3 is a schematic perspective view of the outer case of FIG. 1 (with the hinged front panel omitted);

FIG. 4 is a perspective view of the assembled frame of FIG. 1;

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a left side view of FIG. 4;

FIG. 7 is a top view of FIG. 4;

fig. 8 is a perspective view of the second side plate assembly of fig. 1.

The reference numerals are represented as:

1. an outer case; 11. a top plate; 12. a base plate; 121. a slide rail; 13. a front plate; 14. a back plate; 141. a first through hole; 15. a first side plate; 16. a second side panel assembly; 161. an inner side plate; 162. an outer panel; 163. a radiator pipe support cover plate; 2. assembling the frame; 20. a space of abdicating; 21. a first side upright frame; 211. assembling a main control panel; 212. a first power supply assembly board; 22. a second side upright frame; 23. a first top link; 24. a second top link; 25. a third side stand frame; 26. a first support bar; 27. a first bottom link; 28. a second bottom link; 29. a middle connecting rod; 31. a micro device; 32. a main control board; 33. a first power supply; 34. a second power supply; 35. a power and heat dissipation module; 351. a heat sink; 36. a capacitive module; 361. a control panel; 37. a terminal block; 38. a main circuit breaker; 41. a first sheet metal part; 42. a second sheet metal part; 43. a third sheet metal part; 44. a fourth sheet metal part; 45. the capacitor module supports the sheet metal part; 51. a first type of micro device assembly board; 52. a second power supply assembly board; 53. a second micro device assembly board; 54. a charging resistor assembly board; 55. a main breaker assembly panel; 56. a third micro device assembly board; 100. a reactor; 101. an evaporator; 1011. an evaporator cover.

Detailed Description

Referring to fig. 1 to 8 in combination, according to an embodiment of the present invention, there is provided a frequency converter, including an outer case 1 and an assembly frame 2 in the outer case 1, wherein the assembly frame 2 is assembled with a first component device group, the outer case 1 has a first opening, and the assembly frame 2 is movably connected to the outer case 1 so as to be able to be pulled out from the first opening or pushed into the outer case 1 in a controlled manner. In the technical scheme, the assembly frame 2 is used as an assembly carrier of the first component group and can be movably pulled out when an internal component is assembled or overhauled, so that the operation space for assembling or overhauling is greatly increased, the component is convenient to assemble and overhaul, the assembly and design of the frequency converter are more compact, and the size of the frequency converter is smaller. The assembly frame 2 and the outer case 1 may be connected to each other in a hinged manner, for example, and preferably, they are connected to each other in a sliding manner, so that the assembly frame 2 can be pushed into the outer case 1 in a larger amount.

In some embodiments, the outer box 1 includes a top plate 11, a bottom plate 12, a front plate 13, a rear plate 14, and a first side plate 15, the top plate 11, the bottom plate 12, the front plate 13, the rear plate 14, and the first side plate 15 are assembled to form a rectangular parallelepiped, the first opening is configured on a side elevation of the rectangular parallelepiped opposite to the first side plate 15, and it should be noted that the top plate 11, the bottom plate 12, the front plate 13, the rear plate 14, and the first side plate 15 are defined by an actual installation orientation of the frequency converter.

The first component group includes at least one of relatively light components such as a micro device 31, a main control board 32, a first power supply 33, a second power supply 34, a power and heat dissipation module 35, a capacitor module 36, a terminal strip 37, and a main breaker 38, where the micro device 31 includes, for example, a motor starter, a contactor, a temperature controller, a micro breaker, a relay, and the like. Of course, other necessary electrical components are connected to the assembly frame 2, such as insulators (in a specific embodiment, the insulators are two types and have heights of 30mm and 50mm, respectively), connecting copper sheets, cables, and the like.

In some embodiments, at least two parallel slide rails 121 are disposed on one side of the bottom plate 12 facing the inside of the outer box 1, and the bottom of the assembly frame 2 is slidably connected to the at least two slide rails 121 by at least two slide blocks (not shown) in a one-to-one correspondence manner, so that the stability and reliability of the pushing or pulling process of the assembly frame 2 can be ensured. The slide rail 121 may be formed by welding two bent radius plates to the bottom plate 12.

In some embodiments, a second component group is assembled in the outer case 1, and the second component group is fixedly connected with the assembly frame 2, and the weight of the second component group is greater than that of the first component group, it can be understood that the overall weight of each individual component in the second component group is greater, so that the components with greater weight are fixedly connected to the outer case 1 and are not assembled on the movable assembly frame 2, and the pushing and pulling of the assembly frame 2 can be easier and smoother. The second component group comprises a reactor 100, and the reactor 100 is fixedly connected with the slide rail 121; and/or the second component group comprises an evaporator 101, and the evaporator 101 is fixedly connected to the inner side wall of the outer box body 1. In some embodiments, the assembly frame 2 has a space 20, and when the assembly frame 2 is pushed into the outer case 1, the second component device group is assembled on the outer case 1 corresponding to the space 20. The relief space 20 is, for example, a notch formed in an area of the assembly frame 2, and can basically meet the requirement of the installation space of the second component group and does not obstruct the push-pull stroke of the assembly frame 2.

In some embodiments, the space of stepping down 20 is in bottom one side of equipment frame 2, at this moment equipment frame 2 with both press from both sides together and establish formation of bottom plate 12 the space of stepping down 20, the space of stepping down 20 corresponds be connected with evaporator cover 1011 on the equipment frame 2, evaporator cover 1011 is last to have and to allow the passageway that evaporimeter 101 got into, evaporator cover 1011 can form evaporimeter 101 with the isolation of converter inner space prevents that evaporimeter 101 from producing the electrical hidden danger that the comdenstion water brought.

In some embodiments, the assembly frame 2 includes a first side vertical frame 21 corresponding to the first opening, the first side vertical frame 21 is connected with a main control board assembly board 211 for installing a main control board 32 and a first power supply assembly board 212 for installing a first power supply 33 (specifically for supplying power to an external bearing controller), the main control board assembly board 211 and the first power supply assembly board 212 are stacked at intervals in a direction from the rear board 14 to the front board 13, and both the main control board assembly board 211 and the first power supply assembly board 212 are hinged to the first side vertical frame 21, so that the main control board assembly board 211 and the first power supply assembly board 212 can be respectively rotated and opened and closed relative to the first side vertical frame 21, thereby the arrangement of the inner space of the outer box 1 can be more rationalized, the space utilization rate can be further improved, and the main control board assembly board 211, the first power supply assembly board 212, the first power supply assembly board 211 and the first power supply assembly board 212 can be rotated and opened and closed during component assembly and component maintenance The first power assembly plate 212 is rotated to a certain angle, and the operation space is further enlarged.

In some embodiments, the assembly frame 2 further includes a second side standing frame 22, the first side standing frame 21 and the second side standing frame 22 have equal widths and unequal heights, the first side standing frame 21 and the second side standing frame 22 are spaced in parallel, tops of the first side standing frame 21 and the second side standing frame 22 are at the same horizontal height, the first side standing frame 21 and the second side standing frame 22 are connected by a first top connecting rod 23 and a second top connecting rod 24 which are spaced in parallel, and a third side standing frame 25, the third side standing frame 25 and the first side standing frame 21 have equal widths and unequal heights, a sum of a height of the third side standing frame 25 and a height of the second side standing frame 22 is equal to a height of the first side standing frame 21, the third side standing frame 25 is spaced in parallel with the first side standing frame 21 and is located between the first side standing frame 21 and the second side standing frame 22, a bottom of the second side standing frame 22 supports a first supporting rod 26, the bottom end of the first supporting rod 26 is connected with the bottom of the first side upright frame 21 through a first bottom connecting rod 27, the third side upright frame 25 is connected with the first side upright frame 21 through a second bottom connecting rod 28, the bottom of the second side upright frame 22 is connected with the middle of the vertical edge of the first side upright frame 21 through a middle connecting rod 29, and the third side upright frame 25 is simultaneously connected with the middle connecting rod 29 and the first bottom connecting rod 27.

Correspondingly, first sheet metal component 41 has been welded in the first side founds the frame 21 with correspond between the second side founds the frame 22 second sheet metal component 42, third sheet metal component 43 have been welded in the frame face of back plate 14, fourth sheet metal component 44 has been welded in the second side founds the frame 22, first side founds the frame 21 with correspond between the third side founds the frame 25 the welding has the electric capacity module in the frame face of bottom plate 12 and supports sheet metal component 45 for the equipment supports electric capacity module 36 (it includes two control panels 361, the side immediately cover in electric capacity module 36 orientation one side of front bezel 13). First sheet metal component 41, second sheet metal component 42 and third sheet metal component 43 specifically are L shape, and its both ends specifically are connected with adjacent upright frame or connecting rod to strengthen when the intensity of the lateral wall of equipment frame 2, make the arrangement of the equipment board of various components and parts more reasonable. Further, the first sheet metal part 41 and the first side vertical frame 21 are further connected with a first type micro device assembling plate 51, which is specifically used for assembling a relay and a contactor; a second power supply assembling plate 52 is connected between the second sheet metal part 42 and the third sheet metal part 43, and is used for assembling the second power supply 34 (for supplying power to the micro device 31), and a main circuit breaker assembling plate 55 for assembling the main circuit breaker 38 and a third micro device assembling plate 56 for assembling a third micro device (for example, a micro circuit breaker) are connected to a region between the third sheet metal part 43 and the second side standing frame 22; a second micro device assembling plate 53 is connected between the fourth sheet metal part 44 and the upper frame of the second side standing frame 22, and is used for assembling a second micro device (such as a motor starter, a contactor, a temperature controller, etc.), and a charging resistor assembling plate 54 is connected between the fourth sheet metal part 44 and the lower frame of the second side standing frame 22, and is used for assembling a charging resistor (not referenced and not shown in the figure).

In some embodiments, a second side plate assembly 16 is detachably connected to a side of the first side standing frame 21 away from the first side plate 15, the second side plate assembly 16 can form a sealed space with the outer box 1 when the assembling frame 2 is pushed into the outer box 1, so as to ensure the protection level of the frequency converter, and when the assembling frame 2 is pulled out of the outer box 1 for maintenance or component assembly, the second side plate assembly 16 can be detached from the first side standing frame 21, so as to further widen the operation space.

The second side plate assembly 16 includes an inner side plate 161 close to the first side standing frame 21 and an outer side plate 162 welded to the inner side plate 161 away from the first side standing frame 21, and the inner side plate 161 is riveted with a coupling nut through which the second side plate assembly 16 is coupled to the first side standing frame 21. In this technical scheme, the inboard pressure riveting of interior plate 161 is connected with coupling nut, realizes second side panel assembly 16 with the connection of dismantling between the first side stile 21, simultaneously, the outside welded connection of interior plate 161 the outer panel 162 can shelter from interior plate 161 is because the pressure riveting the hole that coupling nut produced promotes the protection level of corresponding position.

In some embodiments, the inner side plate 161 has a radiator support cover 163 thereon, and the rear plate 14 is configured with a first through hole 141, and the radiator support cover 163 is detachably connected to the first through hole 141 when the assembly frame 2 is pushed into the outer case 1. The power and heat dissipation module 35 includes a power board and a heat sink 351 capable of dissipating heat from the power board, wherein the heat sink 351 has a corresponding inlet and outlet pipe for a cooling medium, and is connected to an external cooling source component through the first through hole 141. The evaporator 100 is used for cooling the internal space of the frequency converter, and may share the same cooling source component with the heat sink 351. The main breaker 38 is electrically connected to an external three-phase power supply through a copper sheet.

It can be understood that, when the assembly frame 2 is pushed or pulled, the components assembled to the assembly frame 2 should be disconnected from the outer case 1 and the external connection members.

In some embodiments, the front plate 13 is hinged to the first side plate 15, so that the front plate 13 can be rotatably opened and closed with the first side plate 15, and an open space of internal components of the outer box 1 during maintenance or assembly is further increased.

In some embodiments, two adjacent plates of the top plate 11, the bottom plate 12, the rear plate 14 and the first side plate 15 are welded, so that the problem of water and dust prevention caused by seams between plate surfaces in the prior art can be solved, the protection level of the frequency converter is further improved, and the failure rate of the frequency converter in a harsh environment is reduced.

The utility model also provides an air conditioning unit which comprises the frequency converter.

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 substitutions and improvements made within the spirit and principle of the present invention should be included in 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, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (14)

1. The frequency converter is characterized by comprising an outer box body (1) and an assembling frame (2) arranged in the outer box body (1), wherein a first element device group is assembled on the assembling frame (2), the outer box body (1) is provided with a first opening, and the assembling frame (2) is movably connected with the outer box body (1) so as to be pulled out of or pushed into the outer box body (1) from the first opening in a controlled manner.

2. Frequency converter according to claim 1, characterized in that the assembly frame (2) is connected to the outer box (1) in a sliding manner.

3. The frequency converter according to claim 1 or 2, characterized in that the outer box (1) comprises a top plate (11), a bottom plate (12), a front plate (13), a rear plate (14) and a first side plate (15), wherein the top plate (11), the bottom plate (12), the front plate (13), the rear plate (14) and the first side plate (15) are assembled to form a cuboid, and the first opening is formed on a side elevation surface of the cuboid opposite to the first side plate (15); and/or the first component group comprises at least one of a micro device (31), a main control board (32), a first power supply (33), a second power supply (34), a power and heat dissipation module (35), a capacitance module (36), a terminal strip (37) and a main circuit breaker (38).

4. The frequency converter according to claim 3, characterized in that the side of the bottom plate (12) facing the inside of the outer box (1) is provided with at least two mutually parallel slide rails (121), and the bottom of the assembly frame (2) is slidably connected with the at least two slide rails (121) through at least two slide blocks in a one-to-one correspondence manner.

5. The frequency converter according to claim 4, characterized in that a second component group is assembled in the outer case (1), and the second component group is fixedly connected with the assembly frame (2), and the weight of the second component group is greater than that of the first component group.

6. The frequency converter according to claim 5, characterized in that the second component group comprises a reactor (100), and the reactor (100) is fixedly connected with the slide rail (121); and/or the second component group comprises an evaporator (101), and the evaporator (101) is fixedly connected to the inner side wall of the outer box body (1).

7. The frequency converter according to claim 6, wherein the assembly frame (2) has a space (20) for avoiding, when the assembly frame (2) is pushed into the outer case (1), the second component device set is assembled on the outer case (1) corresponding to the space (20) for avoiding.

8. Frequency converter according to claim 7, characterized in that an evaporator cover (1011) is attached to the assembly frame (2) corresponding to the relief space (20), said evaporator cover (1011) having a passage allowing the evaporator (101) to enter.

9. The frequency converter according to claim 3, wherein the assembly frame (2) comprises a first side vertical frame (21) corresponding to the first opening, a main control board assembly board (211) and a first power supply assembly board (212) are connected to the first side vertical frame (21), the main control board assembly board (211) and the first power supply assembly board (212) are stacked at intervals along a direction from the rear board (14) to the front board (13), and both the main control board assembly board (211) and the first power supply assembly board (212) are hinged to the first side vertical frame (21).

10. Frequency converter according to claim 9, characterized in that a second side panel assembly (16) is detachably connected to the first side stile (21) on the side remote from the first side panel (15).

11. The frequency converter according to claim 10, wherein the second side plate assembly (16) comprises an inner side plate (161) close to the first side stile (21) and an outer side plate (162) welded to the inner side plate (161) far from the first side stile (21), the inner side plate (161) is press-riveted with a coupling nut by which the second side plate assembly (16) is coupled to the first side stile (21).

12. The frequency converter according to claim 11, characterized in that the inner side plate (161) has a radiator pipe support cover plate (163) thereon, and the rear plate (14) is configured with a first through hole (141), the radiator pipe support cover plate (163) being detachably connectable at the first through hole (141) when the assembly frame (2) is pushed into the outer case (1).

13. Frequency converter according to claim 3, characterized in that said front plate (13) is hinged to said first side plate (15); and/or two adjacent plates of the top plate (11), the bottom plate (12), the rear plate (14) and the first side plate (15) are welded.

14. Air conditioning assembly, characterized in that it comprises an inverter according to any one of claims 1 to 13.

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