CN110299851A - Installation frame, frequency converter main control unit, frequency converter and compressor - Google Patents
Installation frame, frequency converter main control unit, frequency converter and compressor Download PDFInfo
- Publication number
- CN110299851A CN110299851A CN201910740638.1A CN201910740638A CN110299851A CN 110299851 A CN110299851 A CN 110299851A CN 201910740638 A CN201910740638 A CN 201910740638A CN 110299851 A CN110299851 A CN 110299851A
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- CN
- China
- Prior art keywords
- vertical beam
- mounting portion
- frequency converter
- control unit
- main control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inverter Devices (AREA)
Abstract
The present invention provides a kind of installation frame, frequency converter main control unit, frequency converter and compressor.Wherein frequency converter main control unit installation frame, including main frame, the first mounting portion parallel to each other is configured on the main frame, second mounting portion, third mounting portion, and second mounting portion is between first mounting portion and second mounting portion, first mounting portion is for installing the first mainboard, second mounting portion is for installing IPM power module assembly, the third mounting portion is for installing the second mainboard, first mounting portion is vertically arranged, so that the component seating side of first mainboard and the second mainboard after mounting being capable of horizontally toward user side.A kind of installation frame, frequency converter main control unit, frequency converter and compressor according to the present invention, topology layout is reasonable, compact, effectively reduces the volume of main control unit, overhauls convenient for the later period.
Description
Technical field
The invention belongs to converter technology fields, and in particular to a kind of installation frame, frequency converter main control unit, frequency converter and
Compressor.
Background technique
Under the situation that electronic technology is constantly progressive and is developed, the development of converter technology and its equipment is also gradually complete
Kind, extensive use has been obtained in four-quadrant big-power transducer, such as: heavy industry, water supply construction system, air-conditioning equipment, electricity
Ladder operation etc..But the development of domestic frequency converter and development not yet form the system of complete set, frequency changer design
It is still immature, lead to big current big-power transducer volume, maintenance and periodic inspection difficulty, high failure rate, especially with master control
The structure design of unit accounts for a big chunk reason.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that providing a kind of installation frame, frequency converter main control unit, frequency converter
And compressor, topology layout is reasonable, compact, effectively reduces the volume of main control unit, overhauls convenient for the later period.
To solve the above-mentioned problems, the present invention provides a kind of installation frame, is used in frequency converter main control unit, including main frame
Frame is configured with the first mounting portion parallel to each other, the second mounting portion, third mounting portion, and second peace on the main frame
Dress portion is between first mounting portion and second mounting portion, and first mounting portion is for installing the first mainboard, institute
The second mounting portion is stated for installing IPM power module assembly, the third mounting portion is for installing the second mainboard, first peace
Dress portion is vertically arranged, so that the component seating side of first mainboard and the second mainboard can be used horizontally toward after mounting
Family side.
Preferably, the main frame includes the bottom frame and top frame of horizontal parallel setting, is passed through between the bottom frame and top frame
The vertical beam connection of more parallel intervals setting, the more vertical beams include the first vertical beam, the second vertical beam, first vertical beam, the
The interstitial site of two vertical beams is provided with the first mainboard mounting plate；And/or multiple vertical beams further include third vertical beam, described
IPM power module assembly mounting plate is provided on three vertical beams.
Preferably, the multiple vertical beam further includes the 4th vertical beam, the 5th vertical beam, between the 4th vertical beam, the 5th vertical beam
Gap position is provided with the second mainboard mounting plate component.
Preferably, the second mainboard mounting plate component includes stationary backplate, movable back board, the stationary backplate and fixation
It is connected between the 4th vertical beam and the 5th vertical beam, the movable back board is described for connecting with second mainboard
It is slidably connected between stationary backplate and the movable back board.
Preferably, guide rail is provided between the stationary backplate and the movable back board.
Preferably, it is configured with positioning through hole on the movable back board, is configured in the stationary backplate logical with the positioning
The corresponding fixing screwed hole in hole, when the movable back board is in preset retracted position, the positioning through hole with it is described solid
Determine to connect between threaded hole by screw element.
Preferably, it is configured with position on the movable back board and keeps screw hole.
Preferably, the multiple vertical beam further includes the 6th vertical beam, the 7th vertical beam, the 6th vertical beam, the 7th vertical beam and institute
State the first vertical beam, the 4th vertical beam surrounds capacitor mounting portion jointly, the capacitor mounting portion is for installing capacitor.
Preferably, capacitor mounting plate, the electricity are provided on bottom frame region corresponding with the capacitor mounting portion
Hold and is detachably connected between the capacitor mounting plate.
Preferably, drip tray is additionally provided on the bottom frame, the drip tray is in the lower position of second mounting portion.
Preferably, power module mounting plate is additionally provided in the top frame.
The present invention also provides a kind of frequency converter main control unit, including installation frame, the installation frame is above-mentioned frequency converter
Main control unit installation frame.
Preferably, the IPM power module assembly includes rectification module, inverter module, thermal component, the rectification mould
Block, inverter module are respectively at the opposite sides of the thermal component, to form heat exchange with the thermal component.
Preferably, the thermal component is plate structure, and the thermal component is removably attachable to second installation
In portion.
Preferably, the exposed surface of the thermal component is equipped with heat-preservation cotton；And/or the thermal component is followed by refrigerant
Ring realizes that temperature is adjusted.
Preferably, it is also electrically connected by busbar between the rectification module and the inverter module, as the frequency converter master
When control unit installation frame includes capacitor mounting portion, capacitor is electrically connected with the busbar.
The present invention also provides a kind of frequency converters, including above-mentioned frequency converter main control unit.
The present invention also provides a kind of compressors, including above-mentioned frequency converter.
A kind of installation frame, frequency converter main control unit, frequency converter and compressor provided by the invention, first installation
Portion, the second mounting portion, third mounting portion are all in vertical position and are parallel to each other, to make first mainboard, the second mainboard
And IPM power module assembly can vertical setting parallel to each other on the main frame, and the IPM power module assembly is then
Position between first mainboard and second mainboard, this loads onto three in group to form on horizontal extension direction
Stepped construction, while compact-sized, it is therefore prevented that the first mainboard described in the prior art, the second mainboard and IPM power module
Component level, which is placed, to be easy to generate the phenomenon that depositing dust, in addition, due to first mainboard, the second mainboard and IPM power mould
Block assembly can be vertically-mounted, this can guarantee electrical on first mainboard, the second mainboard and IPM power module assembly
Component can horizontally toward user side, the later period maintenance of main control unit can also be facilitated while being easily installed.
Detailed description of the invention
Fig. 1 is the perspective structure schematic diagram of the frequency converter main control unit installation frame of the embodiment of the present invention；
Fig. 2 is the schematic perspective view of Fig. 1；
Fig. 3 is the schematic perspective view of the frequency converter main control unit of the embodiment of the present invention.
Appended drawing reference indicates are as follows:
11, the first vertical beam；12, the second vertical beam；13, third vertical beam；14, the 4th vertical beam；15, the 5th vertical beam；16, the 6th is perpendicular
Beam；17, the 7th vertical beam；2, drip tray；3, power module mounting plate；4, top frame；41, first crossbeam；42, second cross beam；43,
Three crossbeams；44, the 4th crossbeam；5, bottom frame；51, the 5th crossbeam；52, the 6th crossbeam；53, the 7th crossbeam；54, the 8th crossbeam；
100, the first mainboard；101, the first mainboard mounting plate；200, IPM power module assembly；201, IPM power module assembly is installed
Plate；202, rectification module；203, inverter module；204, thermal component；205, busbar；300, the second mainboard；301, the second mainboard
Mounting plate component；3011, stationary backplate；3012, movable back board；3013, guide rail；3014, positioning through hole；3015, position is kept
Screw hole；400, capacitor；401, capacitor mounting plate；500, power module.
Specific embodiment
In conjunction with referring to shown in Fig. 1 to Fig. 3, according to an embodiment of the invention, a kind of installation frame, including main frame are provided,
For in frequency converter main control unit, the specifically installation frame application as the frequency converter main control unit, structure on the main frame
The first mounting portion parallel to each other, the second mounting portion, third mounting portion are made, and second mounting portion is in first peace
Between dress portion and second mounting portion, first mounting portion is used for for installing the first mainboard 100, second mounting portion
IPM power module assembly 200 is installed, the third mounting portion is vertically set for installing the second mainboard 300, first mounting portion
It sets, so that the component seating side of first mainboard 100 and the second mainboard 300 after mounting being capable of horizontally toward user
Side.In the technical solution, first mounting portion, the second mounting portion, third mounting portion are all in vertical position and are parallel to each other,
To enable first mainboard 100, the second mainboard 300 and the vertical setting parallel to each other of IPM power module assembly 200 to exist
On the main frame, and the IPM power module assembly 200 then in first mainboard 100 and second mainboard 300 it
Between position, this makes three load onto the stepped construction formd on horizontal extension direction in group, while compact-sized, it is therefore prevented that
First mainboard 100 described in the prior art, the second mainboard 300 and IPM power module assembly 200 are horizontal positioned to be easy deposition dust
The phenomenon that generate, in addition, since first mainboard 100, the second mainboard 300 and IPM power module assembly 200 can be vertical
Installation, this can guarantee the electric components on first mainboard 100, the second mainboard 300 and IPM power module assembly 200
Can horizontally toward user side, the later period maintenance of main control unit can also be facilitated while being easily installed.
The main frame is in specific production, such as can splice welding shape each other using the angle steel of more different sizes
At specifically, the main frame includes the bottom frame 5 and top frame 4 of horizontal parallel setting, by more between the bottom frame 5 and top frame 4
The vertical beam connection of root parallel interval setting, the more vertical beams include the first vertical beam 11, the second vertical beam 12, first vertical beam
11, the interstitial site of the second vertical beam 12 is provided with the first mainboard mounting plate 101；And/or multiple vertical beams further include that third is perpendicular
Beam 13, the 4th vertical beam 14, the third vertical beam 13, the 4th vertical beam 14 interstitial site be provided with IPM power module assembly installation
Plate 201.Specifically, the top frame 4 for example can be horizontal using the sequentially connected first crossbeam 41 of head and the tail, second cross beam 42, third
Beam 43, the formation of the 4th crossbeam 44, and the bottom frame 5 then can using sequentially connected 5th crossbeam 51 of head and the tail, the 6th crossbeam 52,
7th crossbeam 53, the formation of the 8th crossbeam 54.
Further, the multiple vertical beam further includes the 4th vertical beam 14, the 5th vertical beam 15, the 4th vertical beam 14,
The interstitial site of five vertical beams 15 is provided with the second mainboard mounting plate component 301.
As a preferred embodiment, the second mainboard mounting plate component 301 includes stationary backplate 3011, activity
Backboard 3012, the stationary backplate 3011 and is fixedly connected between the 4th vertical beam 14 and the 5th vertical beam 15, described
Movable back board 3012 with second mainboard 300 for connecting, between the stationary backplate 3011 and the movable back board 3012
It is slidably connected, namely when second mainboard 300 is assembled on the second mainboard mounting plate component 301, is needing to institute
When stating the second mainboard 300 and being overhauled, due to being slidably connected between the movable back board 3012 and the stationary backplate 3011, this
When can force in the movable back board 3012 and layback is dynamic outward, second mainboard 300 will be exposed to operator completely
In face of member, although in this way, there is screening in the horizontal direction between first mounting portion, the second mounting portion, third mounting portion
Gear, but due to the design of the technical solution, can will adversely affect and eliminate because of the level barrier bring, the side of high degree
Just the later period maintenance process of main control unit.As a kind of specific embodiment, can by the stationary backplate 3011 with
The mode that guide rail 3013 is provided between the movable back board 3012 realizes above-mentioned be slidably connected.
Due to being slidably connected between the stationary backplate 3011 and the movable back board 3012, when putting for the installation frame
When setting orientation run-off the straight, such as when the frequency converter main control unit is arranged on vehicle, the stationary backplate 3011 with
The position that being slidably connected between the movable back board 3012 will lead to the movable back board 3012 is unstable, in order to promote its position
The reliability and stability set, it is preferable that positioning through hole 3014 is configured on the movable back board 3012, in the stationary backplate 3011
It is configured with fixing screwed hole corresponding with the positioning through hole 3014, when the movable back board 3012 is in preset retraction position
When setting, connected between the positioning through hole 3014 and the fixing screwed hole by screw element, in concrete operations, the screw element
Using common positioning bolt.Further, it is configured with position on the movable back board 3012 and keeps screw hole 3015, is having
Body is in application, the position keeps screwing conflict bolt in screw hole 3015, and by the conflict bolt towards the stationary backplate
3011 side precession contradicts the bar portion top for contradicting bolt in the stationary backplate 3011, to make the work
Spacing between dynamic backboard 3012 and the stationary backplate 3011 is kept by the conflict bolt, it is to be understood that described to support
Touching bolt and the positioning bolt are collectively formed to the movable back board 3012 and the relative position of the stationary backplate 3011
It keeps.
The volume of capacitor in main control unit is often larger, in response to this, it is preferable that the multiple vertical beam further includes
6th vertical beam 16, the 7th vertical beam 17, the 6th vertical beam 16, the 7th vertical beam 17 and first vertical beam 11, the 4th vertical beam 14 are total
With capacitor mounting portion is surrounded, the capacitor mounting portion is for installing capacitor 400, capacitor 400 and IPM power module assembly at this time
Busbar 205 in 200 is electrically connected.In order to improve the position reliability of the capacitor 400, the bottom frame 5 is installed with the capacitor
Capacitor mounting plate 401 is provided on the corresponding region in portion, it is detachable between the capacitor 400 and the capacitor mounting plate 401
Connection, specifically, the capacitor 400 is equipped with threaded post towards the side of the capacitor mounting plate 401, the threaded post being capable of spiral shell
Line is connected on the capacitor mounting plate 401.
When being equipped with thermal component in the IPM power module assembly 200, condensed water is easily generated on thermal component,
At this time, it is preferable that drip tray 2 is additionally provided on the bottom frame 5, the drip tray 2 is in the lower position of second mounting portion,
To accept and be discharged the condensed water that the IPM power module assembly 200 generates in time, prevent from generating hidden danger to electrical component.
Preferably, it is additionally provided with power module mounting plate 3 in the top frame 4, specifically, the power module mounting plate 3 has
There is concave configuration, the concave configuration forms the installation space of power module 500, adopts the structure, the power module 500
It is isolated with first mainboard 100, the second mainboard 300 and IPM power module assembly 200, electromagnetism guarantor can be formed to it
Shield, it is to be appreciated that the power module 500 is used to supply the electric energy of first mainboard 100, the second mainboard 200.
And further, corresponding housing can be set in the installation frame periphery, with the inside to the installation frame
Component forms closing, and in actual application, the installation frame is often placed in Electric Appliance Cabinet, at this point, without to described
The external implementation of installation frame is fully sealed, and need to only influence appearance or be easier to that the corresponding cover board of position setting of accidentally touching occurs
, such as in the respective side of first mainboard 100 front shroud is set to promote the aesthetic appearance of the installation frame
Property, lamina tecti is set in the respective side of the power module 500, to prevent operator's error shock source module 500 from getting an electric shock.
Using installation frame of the invention, in a specific application example, overall dimensions can be controlled in
620mm × 350mm × 440mm or less.
According to an embodiment of the invention, also providing a kind of frequency converter main control unit, including installation frame, the installation frame
For above-mentioned frequency converter main control unit installation frame.Further, the IPM power module assembly 200 include rectification module 202,
Inverter module 203, thermal component 204, the rectification module 202, inverter module 203 are respectively at the thermal component 204
Opposite sides, with the thermal component 204 formed heat exchange namely the rectification module 202 and inverter module 203 jointly with
Heat exchange occurs for the thermal component 204, this can further make the compact-sized of the installation frame, the occupancy of main control unit
Volume will further reduce.Preferably, the thermal component 204 is plate structure, and the thermal component 204 is detachably connected
In second mounting portion, it is possible to understand that, the thermal component 204 becomes the installation for connecting second mounting portion at this time
Carrier, and the rectification module 202 and inverter module 203 are then directly installed on the thermal component 204, the radiating part of plate
Part 204 can be specially heat sink, and the heat sink has shell and navigates within the pipeline in the shell, in the pipeline
With coolant media, to realize that temperature adjusts (namely cooling down).Further, described in order to avoid to the greatest extent
The formation of condensed water on thermal component 204, it is preferable that the exposed surface of the thermal component 204 is equipped with heat-preservation cotton, heat-preservation cotton
Purpose is arranged to be that contact of the thermal component 204 with outside air is isolated, to prevent the moisture in air and condensation from forming
For condensed water.
Preferably, it is also electrically connected by busbar 205 between the rectification module 202 and the inverter module 203, when described
When frequency converter main control unit installation frame includes capacitor mounting portion, capacitor 400 is electrically connected with the busbar 205, the busbar 205
Such as stack bus bar can be used, this can be further improved the structural compactness of the installation frame.
According to an embodiment of the invention, a kind of frequency converter is also provided, including above-mentioned frequency converter main control unit.
According to an embodiment of the invention, a kind of compressor is also provided, including above-mentioned frequency converter
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.Above only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as guarantor of the invention
Protect range.
Claims (18)
1. a kind of installation frame, in frequency converter main control unit, which is characterized in that including main frame, structure on the main frame
The first mounting portion parallel to each other, the second mounting portion, third mounting portion are made, and second mounting portion is in first peace
Between dress portion and second mounting portion, first mounting portion for installing the first mainboard (100), use by second mounting portion
In installation IPM power module assembly (200), the third mounting portion is for installing the second mainboard (300), first mounting portion
It is vertically arranged, so that the component seating side of first mainboard (100) and the second mainboard (300) after mounting can be horizontal
Towards user side.
2. installation frame according to claim 1, which is characterized in that the main frame includes the bottom frame of horizontal parallel setting
(5) it with top frame (4), is connect between the bottom frame (5) and top frame (4) by the vertical beam that more parallel intervals are arranged, described in more
Vertical beam includes the first vertical beam (11), the second vertical beam (12), the interstitial site setting of first vertical beam (11), the second vertical beam (12)
There is the first mainboard mounting plate (101)；And/or multiple vertical beams further include third vertical beam (13), on the third vertical beam (13)
It is provided with IPM power module assembly mounting plate (201).
3. installation frame according to claim 2, which is characterized in that the multiple vertical beam further include the 4th vertical beam (14),
5th vertical beam (15), the 4th vertical beam (14), the 5th vertical beam (15) interstitial site be provided with the second mainboard mounting plate component
(301)。
4. installation frame according to claim 3, which is characterized in that the second mainboard mounting plate component (301) includes
Stationary backplate (3011), movable back board (3012), the stationary backplate (3011) and are fixedly connected on the 4th vertical beam (14)
Between the 5th vertical beam (15), the movable back board (3012) with second mainboard (300) for connecting, the fixation
It is slidably connected between backboard (3011) and the movable back board (3012).
5. installation frame according to claim 4, which is characterized in that the stationary backplate (3011) and the movable back board
(3012) guide rail (3013) are provided between.
6. installation frame according to claim 4, which is characterized in that it is logical to be configured with positioning on the movable back board (3012)
Hole (3014) is configured with fixing screwed hole corresponding with the positioning through hole (3014) on the stationary backplate (3011), when
When the movable back board (3012) is in preset retracted position, between the positioning through hole (3014) and the fixing screwed hole
It is connected by screw element.
7. installation frame according to claim 4, which is characterized in that be configured with position guarantor on the movable back board (3012)
Hold screw hole (3015).
8. installation frame according to claim 4, which is characterized in that the multiple vertical beam further include the 6th vertical beam (16),
7th vertical beam (17), the 6th vertical beam (16), the 7th vertical beam (17) and first vertical beam (11), the 4th vertical beam (14) are common
Capacitor mounting portion is surrounded, the capacitor mounting portion is for installing capacitor (400).
9. installation frame according to claim 8, which is characterized in that the bottom frame (5) is opposite with the capacitor mounting portion
It is provided on the region answered capacitor mounting plate (401), it is detachable between the capacitor (400) and the capacitor mounting plate (401)
Connection.
10. installation frame according to claim 2, which is characterized in that be additionally provided with drip tray (2), institute on the bottom frame (5)
State the lower position that drip tray (2) are in second mounting portion.
11. installation frame according to claim 2, which is characterized in that be additionally provided with power module installation on the top frame (4)
Plate (3).
12. a kind of frequency converter main control unit, including installation frame, which is characterized in that the installation frame is claim 1 to 11
Any one of described in frequency converter main control unit installation frame.
13. main control unit according to claim 12, which is characterized in that the IPM power module assembly (200) includes whole
Flow module (202), inverter module (203), thermal component (204), the rectification module (202), inverter module (203) are located respectively
Opposite sides in the thermal component (204), to form heat exchange with the thermal component (204).
14. main control unit according to claim 13, which is characterized in that the thermal component (204) is plate structure, institute
Thermal component (204) is stated to be removably attachable in second mounting portion.
15. main control unit according to claim 13, which is characterized in that the exposed surface of the thermal component (204) is set
There is heat-preservation cotton；And/or the thermal component (204) realizes that temperature is adjusted by refrigerant circulation.
16. main control unit according to claim 13, which is characterized in that the rectification module (202) and the inversion mould
It is also electrically connected by busbar (205) between block (203), when the frequency converter main control unit installation frame includes capacitor mounting portion
When, capacitor (400) is electrically connected with the busbar (205).
17. a kind of frequency converter, including frequency converter main control unit, which is characterized in that the frequency converter main control unit is claim
Frequency converter main control unit described in any one of 12-16.
18. a kind of compressor, including frequency converter, which is characterized in that the frequency converter is frequency converter described in claim 17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910740638.1A CN110299851A (en) | 2019-08-12 | 2019-08-12 | Installation frame, frequency converter main control unit, frequency converter and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910740638.1A CN110299851A (en) | 2019-08-12 | 2019-08-12 | Installation frame, frequency converter main control unit, frequency converter and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110299851A true CN110299851A (en) | 2019-10-01 |
Family
ID=68032987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910740638.1A Pending CN110299851A (en) | 2019-08-12 | 2019-08-12 | Installation frame, frequency converter main control unit, frequency converter and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110299851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112492830A (en) * | 2020-12-10 | 2021-03-12 | 珠海格力电器股份有限公司 | Main control frame of frequency converter |
-
2019
- 2019-08-12 CN CN201910740638.1A patent/CN110299851A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112492830A (en) * | 2020-12-10 | 2021-03-12 | 珠海格力电器股份有限公司 | Main control frame of frequency converter |
| CN112492830B (en) * | 2020-12-10 | 2024-03-22 | 珠海格力电器股份有限公司 | Main control frame of frequency converter |
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