CN215835668U - Frequency converter with switchable ports - Google Patents
Frequency converter with switchable ports Download PDFInfo
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- CN215835668U CN215835668U CN202121847019.1U CN202121847019U CN215835668U CN 215835668 U CN215835668 U CN 215835668U CN 202121847019 U CN202121847019 U CN 202121847019U CN 215835668 U CN215835668 U CN 215835668U
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- 238000009434 installation Methods 0.000 claims abstract description 41
- 230000017525 heat dissipation Effects 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 229920000728 polyester Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006698 induction Effects 0.000 description 8
- 239000000428 dust Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model discloses a frequency converter with switchable ports, which comprises an installation box, a detachable unit and a connecting port, wherein the installation box is provided with a plurality of connecting holes; the lower surface in the installation box is provided with a heat dissipation plate, a frequency converter assembly is arranged on the heat dissipation plate, a port installation through groove is formed in the outer surface of the left side plate of the installation box, a cooling unit is arranged on the installation box, and an air outlet through groove is formed in the front side surface of the installation box; the detachable unit comprises a mounting plate, a shifting block, a sliding plate, a spring, sliding cavities, a positioning rod and positioning holes, the positioning holes are two and are respectively arranged in the side face of the mounting groove of the mounting box, the mounting plate is a rectangular plate, the mounting plate is arranged in the through groove of the port mounting of the mounting box, ten mounting holes are formed in the mounting plate, two sliding cavities are respectively formed in two ends of the mounting plate, the frequency converter can be timely and effectively cooled, the heat dissipation effect is guaranteed, and the ports can be replaced and detached.
Description
Technical Field
The utility model relates to the technical field of frequency converters, in particular to a frequency converter with switchable ports.
Background
A Variable-frequency Drive (VFD) is a power control device that applies a frequency conversion technology and a microelectronic technology and controls an ac motor by changing a frequency mode of a motor operating power supply;
the application number 201921754739.6 in the prior art provides a frequency converter with a 485 communication switchable port, which comprises a frequency converter body, wherein a 485 communication interface is inserted into the side wall on the right side of the frequency converter body, and the upper side wall and the lower side wall of the frequency converter body are connected with auxiliary heat dissipation mechanisms;
the heat dissipation effect is poor when the frequency converter works, timely and effective heat dissipation can not be carried out on the frequency converter, and the service life of the frequency converter is influenced.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to overcome the existing defects, and provide a frequency converter with switchable ports, which can effectively dissipate heat of the frequency converter in time, ensure the heat dissipation effect, replace and disassemble the ports, and effectively solve the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a frequency converter with switchable ports comprises an installation box, a detachable unit and a connecting port;
installing a box: the lower surface of the inner part of the installation box is provided with a heat dissipation plate, a frequency converter assembly is arranged on the heat dissipation plate, a port installation through groove is formed in the outer surface of the left side plate of the installation box, a cooling unit is arranged on the installation box, and an air outlet through groove is formed in the front side surface of the installation box;
a detachable unit: the mounting box comprises a mounting plate, a shifting block, a sliding plate, a spring, sliding cavities, a positioning rod and positioning holes, wherein the two positioning holes are formed in the side face of a mounting through groove of the mounting box respectively, the mounting plate is a rectangular plate and is mounted in a port mounting through groove of the mounting box, ten mounting holes are formed in the mounting plate, two sliding cavities are formed in two ends of the mounting plate respectively, a sliding groove communicated with the sliding cavities is formed in the upper surface of the mounting plate, the spring is arranged in each sliding cavity, the inner side face of each sliding cavity is connected with one end of the spring, the other end of the spring is fixedly connected with the sliding plate, the sliding plate is connected in the sliding cavity in a sliding mode, the sliding plate is fixedly connected with one end of the positioning rod, the other end of the positioning rod penetrates through the sliding cavity and extends into the positioning hole, the shifting block is arranged on the upper surface of the sliding plate and is connected in the sliding groove of the mounting plate in a sliding mode;
connecting ports: ten ports are arranged in the mounting holes on the mounting plate at equal intervals, and the connecting ports are electrically connected with the frequency converter assembly.
Wholly set up in the install bin, carry out the thermal giving off of converter subassembly through the heating panel, cool down the converter subassembly in the install bin through the cooling unit, the selection has the mounting panel of suitable quantity connection port, pass through electric wire connection to the converter subassembly to connection port's input, through stirring two shifting blocks in opposite directions, the shifting block drives the slide and slides, the slide drives the locating lever and forms the compression to the spring, the port installation that the install bin was placed to the mounting panel leads to the inslot, loosen two shifting blocks, promote the slide motion through the spring, the slide promotes the locating lever motion, the locating lever stretches into in the locating hole, fix the mounting panel.
Furthermore, the cooling unit comprises a fastening bolt, a filter plate, a draught fan, a mounting seat, a gas collection cavity, an air inlet pipeline, an air outlet hole and an exhaust fan, wherein the mounting seat is arranged on the outer surface of a side plate of the mounting box, an air inlet through groove communicated with the inside of the mounting box is formed in the mounting seat, the draught fan is arranged in the air inlet through groove, a sliding groove is formed in the front end of the upper surface of the mounting seat, the filter plate is connected in the sliding groove, the fastening bolt is arranged on the filter plate, the gas collection cavity is arranged in the mounting box and communicated with the air inlet through groove, the lower surface of the gas collection cavity is connected with two air inlet pipelines, the air inlet pipelines are equidistantly provided with the air outlet hole, the exhaust fan is arranged in the air outlet through groove on the mounting box, the input ends of the draught fan and the exhaust fan are electrically connected with the output end of an external power supply through an external switch set, and the filter plate is fixed through the fastening bolt, the filter plate filters the entering air, the external switch group controls the induction fan to work, the induction fan absorbs the external air, the external air enters the air collecting cavity, the air in the air collecting cavity is transported through the air inlet pipeline and sprayed out through the air outlet holes in the air inlet pipeline, the external switch group controls the exhaust fan to work and rotate, the air in the installation box is extracted, and therefore the air in the installation box flows, and the installation box is cooled.
Further, still include the apron, the apron is ten square polyester boards, and the one end of apron is rotated through the pivot and is connected at the front side outer surface of connection port, protects connection port through the apron, prevents the entering of dust and water droplet.
Further, still include torsion handle, screw rod, connecting plate, protection pad and slide bar, the screw rod is two and the both sides curb plate of threaded connection install bin respectively, and the screw rod runs through the one end fixedly connected with torsion handle of install bin surface, and two screw rods are located the one end of install bin and rotate respectively and be connected with the connecting plate, be provided with the protection pad on the connecting plate, the slide bar is two and the one end fixed connection of slide bar on the connecting plate, and the other end of slide bar runs through the surface of install bin, the both sides curb plate of slide bar sliding connection install bin drives two screw rods respectively through rotating two torsion handles and rotates, and two screw rods drive two connecting plates and carry out the removal in opposite directions and press from both sides tightly to fix the converter subassembly, cushion the protection to the converter subassembly through the protection, carry on spacingly through the slide bar to the connecting plate.
Further, still include heat-conducting plate and heat dissipation strip, the heat-conducting plate sets up the side at the converter subassembly, and the surface of heat-conducting plate is provided with the heat dissipation strip, derives the heat of converter subassembly during operation through the heat-conducting plate, carries out thermal giving off through the heat dissipation strip.
Further, still including connecing the electricity piece, connect the electricity piece to set up on the converter subassembly, and connect the input that electricity piece electricity is connected connection port, connect connection port through connecing the electricity piece, when connection port can't satisfy the use, conveniently change connection port.
Compared with the prior art, the utility model has the beneficial effects that: has the following advantages:
1. the connecting port is arranged on the detachable unit and is connected with the power connection block on the frequency converter assembly, so that the detachable unit with different connecting ports can be selected to be installed according to different plugs, and the applicability is improved;
2. air is input into the installation box through the guide fan, the air is filtered through the filter plate, dust is prevented from entering the installation box, and the air in the installation box is extracted through the exhaust fan, so that flowing air flow is formed in the installation box, and a frequency converter assembly in the installation box is cooled;
3. the heat dissipation of the frequency converter assembly during working can be improved through the heat conducting plate, the heat dissipation strips and the heat dissipation plate, the temperature of the frequency converter assembly during working is reduced, and the service life of the frequency converter assembly is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is a schematic cross-sectional view of the left side of the present invention;
FIG. 4 is a schematic diagram of a right side cross-sectional structure of the present invention.
In the figure: the device comprises an installation box 1, a detachable unit 2, a mounting plate 21, a shifting block 22, a sliding plate 23, a spring 24, a sliding cavity 25, a positioning rod 26, a positioning hole 27, a cooling unit 3, a fastening bolt 31, a filter plate 32, a fan 33, a mounting seat 34, a gas collection cavity 35, a gas inlet pipeline 36, a gas outlet hole 37, an exhaust fan 38, a cover plate 4, a connecting port 5, a torsion handle 6, a screw 7, a connecting plate 8, a protective pad 9, a sliding rod 10, a heat conducting plate 11, a heat radiating strip 12, an electricity connecting block 13, a heat radiating plate 14 and a frequency converter assembly 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present embodiment provides a technical solution: a frequency converter with switchable ports comprises an installation box 1, a detachable unit 2 and a connection port 5;
installation box 1: a heat dissipation plate 14 is arranged on the lower surface of the inner part of the installation box, a frequency converter assembly 15 is arranged on the heat dissipation plate 14, a port installation through groove is formed in the outer surface of the left side plate of the installation box 1, a cooling unit 3 is arranged on the installation box 1, and an air outlet through groove is formed in the front side surface of the installation box 1;
the detachable unit 2: comprises a mounting plate 21, a shifting block 22 and a sliding plate 23, the mounting box comprises springs 24, sliding cavities 25, positioning rods 26 and positioning holes 27, wherein the number of the positioning holes 27 is two, the two positioning holes 27 are respectively formed in the side faces of mounting through grooves of the mounting box 1, the mounting plate 21 is a rectangular plate, the mounting plate 21 is mounted in a port mounting through groove of the mounting box 1, ten mounting holes are formed in the mounting plate 21, two sliding cavities 25 are respectively formed in two ends of the mounting plate 21, a sliding groove communicated with the sliding cavities 25 is formed in the upper surface of the mounting plate 21, the springs 24 are arranged in the sliding cavities 25, the inner side faces of the sliding cavities 25 are connected with one ends of the springs 24, the other ends of the springs 24 are fixedly connected with sliding plates 23, the sliding plates 23 are slidably connected into the sliding cavities 25, the sliding plates 23 are fixedly connected with one ends of the positioning rods 26, the other ends of the positioning rods 26 penetrate through the sliding cavities 25 and extend into the positioning holes 27, the upper surfaces of the sliding plates 23 are provided with shifting blocks 22, and the shifting blocks 22 are slidably connected into the sliding grooves in the mounting plate 21;
connection port 5: ten ports are arranged in the mounting holes on the mounting plate 21 at equal intervals, and the connecting port 5 is electrically connected with the frequency converter assembly 15.
Wholly set up in install bin 1, carry out the thermal giving off of converter subassembly 15 through heating panel 14, cool down converter subassembly 15 in to install bin 1 through cooling unit 3, select the mounting panel 21 that has suitable quantity connection port 5, pass through electric wire connection to converter subassembly 15 to connection port 5's input, through stirring two shifting blocks 22 in opposite directions, shifting block 22 drives slide 23 and slides, slide 23 drives locating lever 26 and forms the compression to spring 24, place the logical inslot of port installation of install bin 1 to mounting panel 21, loosen two shifting blocks 22, promote slide 23 motion through spring 24, slide 23 promotes the motion of locating lever 26, locating lever 26 stretches into in locating hole 27, fix mounting panel 21.
The cooling unit 3 comprises a fastening bolt 31, a filter plate 32, a guiding fan 33, a mounting seat 34, a gas collection chamber 35, an air inlet pipe 36, an air outlet 37 and an exhaust fan 38, wherein the mounting seat 34 is arranged on the outer surface of a side plate of the mounting box 1, an air inlet through groove communicated with the inside of the mounting box 1 is formed in the mounting seat 34, the guiding fan 33 is arranged in the air inlet through groove, a sliding groove is formed in the front end of the upper surface of the mounting seat 34, the filter plate 32 is connected in the sliding groove in a sliding manner, the fastening bolt 31 is arranged on the filter plate 32, the gas collection chamber 35 is arranged in the mounting box 1 and communicated with the air inlet through groove, two air inlet pipes 36 are connected to the lower surface of the gas collection chamber 35, the air outlet holes 37 are formed in the air inlet pipes 36 at equal distance, the exhaust fan 38 is arranged in the air outlet through groove in the mounting box 1, the input ends of the guiding fan 33 and the exhaust fan 38 are electrically connected with the output end of an external power supply through an external switch group, the filter plate 32 is fixed through the fastening bolt 31, filter the air that gets into through filter 32, control the work of induction fan 33 through external switch group, induction fan 33 absorbs the outside air, outside air enters into gas collection chamber 35, the air in gas collection chamber 35 passes through inlet duct 36 transportation, the 37 blowout of venthole on the rethread inlet duct 36, control exhaust fan 38 work through external switch group and rotate, take out the air in the install bin 1, thereby realize the flow of air in the install bin 1, lower the temperature to install bin 1.
Still include apron 4, apron 4 is ten square polyester boards, and the one end of apron 4 is rotated through the pivot and is connected at the front side outer surface of connection port 5, protects connection port 5 through apron 4, prevents the entering of dust and water droplet.
The device also comprises a torsion handle 6, a screw 7, a connecting plate 8, a protective pad 9 and a slide bar 10, wherein the screw 7 is two and is respectively in threaded connection with the two side plates of the installation box 1, one end of the screw 7 penetrating through the outer surface of the installation box 1 is fixedly connected with the torsion handle 6, one end of the two screws 7 positioned in the installation box 1 is respectively in rotary connection with the connecting plate 8, the protective pad 9 is arranged on the connecting plate 8, the slide bar 10 is two, one end of the slide bar 10 is fixedly connected on the connecting plate 8, the other end of the slide bar 10 penetrates through the outer surface of the installation box 1, the slide bar 10 is in sliding connection with the two side plates of the installation box 1, the two torsion handles 6 are rotated to respectively drive the two screw rods 7 to rotate, the two screw rods 7 drive the two connecting plates 8 to move oppositely and clamp, thereby fix converter subassembly 15, cushion protection to converter subassembly 15 through protection pad 9, carry out spacingly through slide bar 10 to connecting plate 8.
Still include heat-conducting plate 11 and heat dissipation strip 12, heat-conducting plate 11 sets up the side at converter subassembly 15, and the surface of heat-conducting plate 11 is provided with heat dissipation strip 12, exports the heat of converter subassembly 15 during operation through heat-conducting plate 11, carries out thermal giving off through heat dissipation strip 12.
Still including connecing electric block 13, connect electric block 13 to set up on converter subassembly 15, and connect the input of electric connection port 5 of electric block 13, connect connection port 5 through connecing electric block 13, when connection port 5 can't satisfy the use, conveniently change connection port 5.
The working principle of the frequency converter with switchable ports provided by the utility model is as follows: the frequency converter assembly 15 is placed on a heat radiation plate 14, two screw rods 7 are respectively driven to rotate by rotating two torsion handles 6, the two screw rods 7 drive two connecting plates 8 to move oppositely and clamp, so that the frequency converter assembly 15 is fixed, the frequency converter assembly 15 is buffered and protected by a protection pad 9, a mounting plate 21 with a proper number of connecting ports 5 is selected, the input end of the connecting port 5 is connected to a power connection block 13 through an electric wire, the two shifting blocks 22 are shifted oppositely, the shifting blocks 22 drive a sliding plate 23 to slide, the sliding plate 23 drives a positioning rod 26 to compress a spring 24, the mounting plate 21 is placed in a port mounting through groove of a mounting box 1, the two shifting blocks 22 are released, the sliding plate 23 is pushed by the spring 24 to move, the sliding plate 23 pushes the positioning rod 26 to move, the positioning rod 26 extends into a positioning hole 27, the mounting plate 21 is fixed, and the connecting ports 5 are protected by a cover plate 4, prevent the entering of dust and water droplet, heat when leading out converter subassembly 15 during operation through heat-conducting plate 11 and heating panel 14, carry out thermal diffusion through heat dissipation strip 12, fix filter 32 through fastening bolt 31, filter the air that gets into through filter 32, control the work of induction fan 33 through external switch group, induction fan 33 absorbs the outside air, outside air gets into in the gas collecting chamber 35, the air in the gas collecting chamber 35 passes through admission line 36 transportation, the venthole 37 blowout on the rethread admission line 36, control exhaust fan 38 work through external switch group and rotate, take out the air in the install bin 1, realize the flow of air in the install bin 1, thereby carry out the cooling to converter subassembly 15 in the install bin 1.
It should be noted that the induction fan 33 disclosed in the above embodiments may be of the specific type ZINVU-50/17D1-69C-B3, the exhaust fan 38 may be of the specific type CBF-500, and the control switch set controls the induction fan 33 and the exhaust fan 38 to operate in the conventional manner.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A frequency converter with switchable ports, comprising: comprises an installation box (1), a detachable unit (2) and a connecting port (5);
mounting case (1): a heat dissipation plate (14) is arranged on the lower surface of the inner part of the heat dissipation plate (14), a frequency converter assembly (15) is arranged on the heat dissipation plate (14), a port installation through groove is formed in the outer surface of the left side plate of the installation box (1), a cooling unit (3) is arranged on the installation box (1), and an air outlet through groove is formed in the front side surface of the installation box (1);
detachable unit (2): comprises a mounting plate (21), a shifting block (22), two sliding plates (23), a spring (24), a sliding cavity (25), a positioning rod (26) and a positioning hole (27), wherein the positioning hole (27) is arranged in the side surface of the mounting through groove of the mounting box (1) respectively, the mounting plate (21) is a rectangular plate, the mounting plate (21) is arranged in the through groove of the port mounting of the mounting box (1), ten mounting holes are arranged on the mounting plate (21), two sliding cavities (25) are respectively arranged at the two ends of the mounting plate (21), a sliding groove communicated with the sliding cavity (25) is arranged on the upper surface of the mounting plate (21), one end of the spring (24) and the inner side surface of the sliding cavity (25) are arranged in the sliding cavity (25), the sliding plate (23) is connected in the sliding cavity (25) in a sliding way, the other end of the spring (24) is fixedly connected with the sliding plate (23), the sliding plate (23) is fixedly connected with one end of a positioning rod (26), the other end of the positioning rod (26) penetrates through the sliding cavity (25) and extends into the positioning hole (27), the upper surface of the sliding plate (23) is provided with a shifting block (22), and the shifting block (22) is connected in a sliding groove in the mounting plate (21) in a sliding mode;
connection port (5): ten ports are arranged in the mounting holes on the mounting plate (21) at equal intervals, and the connecting port (5) is electrically connected with the frequency converter assembly (15).
2. A frequency converter with switchable ports according to claim 1, characterized in that: the cooling unit (3) comprises fastening bolts (31), a filter plate (32), an induced draft fan (33), a mounting seat (34), a gas collecting cavity (35), an air inlet pipeline (36), air outlet holes (37) and an exhaust fan (38), wherein the mounting seat (34) is arranged on the outer surface of a side plate of the mounting box (1), the mounting seat (34) is provided with an air inlet through groove communicated with the inside of the mounting box (1), the induced draft fan (33) is arranged in the air inlet through groove, the front end of the upper surface of the mounting seat (34) is provided with a sliding groove, the sliding groove is internally and slidably connected with the filter plate (32), the filter plate (32) is provided with the fastening bolts (31), the gas collecting cavity (35) is arranged in the mounting box (1) and communicated with the air inlet through groove, the lower surface of the gas collecting cavity (35) is connected with the two air inlet pipelines (36), the air outlet holes (37) are arranged at equal distance on the air inlet pipelines (36), exhaust fan (38) set up logical inslot of giving vent to anger on install bin (1), the output that draws fan (33) and exhaust fan (38) the input to pass through external switch group electricity and connect external power source.
3. A frequency converter with switchable ports according to claim 1, characterized in that: the novel connecting structure is characterized by further comprising a cover plate (4), wherein the cover plate (4) is ten square polyester plates, and one end of the cover plate (4) is rotatably connected to the outer surface of the front side of the connecting port (5) through a rotating shaft.
4. A frequency converter with switchable ports according to claim 1, characterized in that: still include torsion handle (6), screw rod (7), connecting plate (8), protection pad (9) and slide bar (10), screw rod (7) are two and the both sides curb plate of threaded connection install bin (1) respectively, and screw rod (7) run through one end fixedly connected with torsion handle (6) of install bin (1) surface, and two screw rods (7) are located the one end of install bin (1) and rotate respectively and are connected with connecting plate (8), be provided with protection pad (9) on connecting plate (8), slide bar (10) are two and the one end fixed connection of slide bar (10) on connecting plate (8), and the other end of slide bar (10) runs through the surface of install bin (1), the both sides curb plate of slide bar (10) sliding connection install bin (1).
5. A frequency converter with switchable ports according to claim 1, characterized in that: still include heat-conducting plate (11) and heat dissipation strip (12), heat-conducting plate (11) set up the side at converter subassembly (15), and the surface of heat-conducting plate (11) is provided with heat dissipation strip (12).
6. A frequency converter with switchable ports according to claim 1, characterized in that: the frequency converter further comprises an electricity receiving block (13), wherein the electricity receiving block (13) is arranged on the frequency converter assembly (15), and the electricity receiving block (13) is electrically connected with the input end of the connecting port (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121847019.1U CN215835668U (en) | 2021-08-09 | 2021-08-09 | Frequency converter with switchable ports |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121847019.1U CN215835668U (en) | 2021-08-09 | 2021-08-09 | Frequency converter with switchable ports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215835668U true CN215835668U (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121847019.1U Expired - Fee Related CN215835668U (en) | 2021-08-09 | 2021-08-09 | Frequency converter with switchable ports |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215835668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116847588A (en) * | 2023-02-21 | 2023-10-03 | 汉华智能科技(佛山)有限公司 | Intelligent electric power monitor terminal |
-
2021
- 2021-08-09 CN CN202121847019.1U patent/CN215835668U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116847588A (en) * | 2023-02-21 | 2023-10-03 | 汉华智能科技(佛山)有限公司 | Intelligent electric power monitor terminal |
| CN116847588B (en) * | 2023-02-21 | 2024-04-26 | 汉华智能科技(佛山)有限公司 | Intelligent electric power monitor terminal |
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Granted publication date: 20220215 |