CN110829795A - Frequency conversion controller convenient to heat dissipation - Google Patents
Frequency conversion controller convenient to heat dissipation Download PDFInfo
- Publication number
- CN110829795A CN110829795A CN201911016440.5A CN201911016440A CN110829795A CN 110829795 A CN110829795 A CN 110829795A CN 201911016440 A CN201911016440 A CN 201911016440A CN 110829795 A CN110829795 A CN 110829795A
- Authority
- CN
- China
- Prior art keywords
- heat dissipation
- variable frequency
- frequency controller
- radiating
- controller body
- 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.)
- Pending
Links
Images
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
- H02M1/00—Details of apparatus for conversion
-
- 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
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20909—Forced ventilation, e.g. on heat dissipaters coupled to components
Abstract
The invention discloses a frequency conversion controller convenient for heat dissipation, which comprises a frequency conversion controller body and a heat dissipation box, wherein one side of the outer part of the frequency conversion controller body is provided with a control button, one side of the outer part of the frequency conversion controller body far away from the control button is fixedly provided with a rear cover plate, one side of the inner part of the frequency conversion controller body close to the rear cover plate is symmetrically provided with two groups of sliding chutes, the top of the frequency conversion controller body is equidistantly arrayed with heat dissipation grooves, two sides of the heat dissipation grooves are symmetrically provided with heat dissipation fans at the outer wall of the frequency conversion controller body, the heat dissipation box comprises a heat dissipation box shell, one end of a screw rod is fixedly provided with a first synchronous belt wheel, one side of the inner wall of the heat dissipation box shell above the screw rod is fixedly provided with a motor, an output shaft end of the motor is fixedly, a group of heat dissipation boxes are installed fast through the sliding grooves formed in the rear side of the outer shell, and heat dissipation efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of variable frequency controllers, and particularly relates to a variable frequency controller convenient for heat dissipation.
Background
The frequency converter remote controller can be divided into a digital type and an analog type according to different communication signals; according to different communication media, the communication medium can be divided into wired type and wireless type; different communication protocols also have corresponding products respectively, and at present, a variable frequency control system is more commonly applied to various variable frequency household appliances.
The frequency conversion controller can set an IGBT with higher power, but the installation of a power tube and the selection of a heat radiation mode are more critical. For reducing the shared installation space of frequency conversion controller circuit and reducing use cost, the power circuit of current frequency conversion controller mainly has following two kinds of structural scheme: one is to adopt an integrated IPM module to form an inverter circuit, in which 6 IGBTs, a driving circuit and a protection circuit are integrated. The peripheral circuit structure of such a power circuit is simple, but the IGBT is integrated inside the packaged module, which is not conducive to heat dissipation of the IGBT as a main heat generating device.
Therefore, the frequency conversion controller convenient for heat dissipation is provided for solving the problems in the prior art, a rear shell plate convenient for disassembly is arranged on one side, away from a control panel, of a shell, symmetrical heat dissipation fans are arranged on a case, a heat dissipation groove is formed in the top of the case and used for heat dissipation, when the use environment of the frequency conversion controller changes (for example, under the conditions that a closed electric appliance cabinet body or adjacent electronic components are dense and the like), a group of simple heat dissipation boxes can be quickly installed by utilizing a sliding groove formed in the rear side of the shell, the screw rod is utilized to drive the heat dissipation fans to move, heat generated in the case of the frequency conversion controller is quickly discharged, and the heat dissipation efficiency is improved.
Disclosure of Invention
The invention aims to provide a frequency conversion controller convenient for heat dissipation, and aims to solve the problem that the IGBT integrated into a packaged module in the prior art is not favorable for heat dissipation of the IGBT serving as a main heating device in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme: a frequency conversion controller convenient for heat dissipation comprises a frequency conversion controller body and a heat dissipation box, wherein a control button is arranged on one side of the outer portion of the frequency conversion controller body, a rear cover plate is fixedly installed on one side of the outer portion of the frequency conversion controller body far away from the control button, two groups of sliding grooves are symmetrically arranged on one side of the inner portion of the frequency conversion controller body close to the rear cover plate, heat dissipation grooves are equidistantly arrayed at the top of the frequency conversion controller body, heat dissipation fans are symmetrically arranged on two sides of each heat dissipation groove on the outer wall of the frequency conversion controller body, the heat dissipation box comprises a heat dissipation box shell, a lead screw is rotatably installed in the heat dissipation box shell, a first synchronous belt wheel is fixedly installed at one end of the lead screw, a motor is fixedly installed on one side of the inner wall of the heat dissipation box shell above the lead screw, a second synchronous belt wheel is, the utility model discloses a motor, including radiator casing, screw rod, swivel nut, connecting plate, radiator casing, motor, radiator casing top fixed mounting has linear guide, the screw rod surface spiro union has the swivel nut, fixed mounting has the connecting plate between swivel nut and the linear guide, also fixed mounting has radiator fan on one side of the connecting plate, radiator casing one side symmetry is provided with two sets of conducting bars, conducting bar and spout clearance fit, it all is provided with micro-gap switch.
Preferably, a baffle is arranged above the heat dissipation groove, the baffle is arranged in an inclined mode, and the inclined angle is 35 degrees.
Preferably, two groups of positioning strips are symmetrically arranged on one side inside the variable frequency controller body, the sliding groove is formed in each positioning strip, and the positioning hole is formed in the sliding groove.
Preferably, an elastic plunger is screwed in the guide strip, and the elastic plunger is matched with the positioning hole for use.
Preferably, both ends of the screw rod are fixedly arranged on both sides of the inner wall of the radiator box shell through bearing seats.
Preferably, the motor is fixedly arranged on one side of the inner part of the radiating box shell through a U-shaped frame.
Preferably, through holes are formed in the connecting plate at the mounting positions of the two groups of cooling fans.
Preferably, one side of the through hole is positioned on the inner wall of the radiating box shell and is fixedly provided with a dustproof screen plate.
Preferably, the two groups of micro switches are fixedly arranged on two sides of the inner wall of the heat dissipation box shell through supports.
The invention has the technical effects and advantages that: compared with the prior art, the frequency conversion controller convenient for heat dissipation provided by the invention has the following advantages:
1. when the use environment of the variable frequency controller changes (for example, the closed electric appliance cabinet body or the adjacent electronic components are dense and the like), a group of heat dissipation boxes can be quickly installed by utilizing the sliding groove formed in the rear side of the shell;
2. in the heat dissipation case, utilize the lead screw to drive radiator fan and remove, the quick heat to producing in the variable frequency controller casing discharges, improves the radiating efficiency.
Drawings
FIG. 1 is a schematic perspective view of a heat dissipation box according to the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic front view of the heat dissipation case of the present invention;
FIG. 4 is a schematic side view of the heat dissipation box of the present invention;
fig. 5 is a schematic partial sectional structure view in front view of the present invention.
In the figure: 1. a variable frequency controller body; 2. a heat dissipation box; 201. a radiator housing; 202. a screw rod; 203. a first timing pulley; 204. a motor; 205. a second timing pulley; 206. a synchronous belt; 207. a linear guide rail; 208. a threaded sleeve; 209. a connecting plate; 210. conducting bars; 211. a microswitch; 212. heat dissipation holes; 213. an elastic plunger; 214. a bearing seat; 215. a U-shaped frame; 216. a through hole; 217. a dustproof screen plate; 218. a support; 3. a control button; 4. a rear cover plate; 5. a chute; 6. a heat sink; 7. a heat radiation fan; 8. a baffle plate; 9. a positioning bar; 10. and (7) positioning the holes.
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. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. 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.
The invention provides a frequency conversion controller convenient for heat dissipation, which comprises a frequency conversion controller body 1 and a heat dissipation box 2, wherein one side of the outer part of the frequency conversion controller body 1 is provided with a control button 3, and the working parameters of electrical elements in the frequency conversion controller body 1 are regulated and controlled through the control button 3; a rear cover plate 4 is fixedly installed on one side, away from the control button 3, of the outer portion of the variable frequency controller body 1, the rear cover plate 4 is arranged, so that when the working environment of the variable frequency controller body 1 is changed (for example, in a closed electric appliance cabinet body or under the condition that adjacent electronic components are dense and the like), the rear cover plate 4 is detached, the heat dissipation box 2 is installed rapidly, and the heat dissipation frequency is improved; two groups of sliding grooves 5 are symmetrically arranged on one side, close to the rear cover plate 4, of the interior of the variable frequency controller body 1, the sliding grooves 5 are arranged, the sliding grooves are convenient to be in clearance fit with the guide strips 210 on one side of the heat dissipation box 2, rapid disassembly and assembly are achieved, and the variable frequency controller is installed or disassembled according to the use environment; the top of the variable frequency controller body 1 is equidistantly arrayed with heat dissipation grooves 6, two sides of each heat dissipation groove 6 are symmetrically provided with heat dissipation fans 7 positioned on the outer wall of the variable frequency controller body 1, and the heat dissipation grooves 6 and the heat dissipation fans 7 are matched for use to drive air to flow, so that the variable frequency controller body 1 can dissipate heat conveniently; baffle 8 is provided with above the radiating groove 6, baffle 8 is the slope setting, and inclination is 35, sets up inclination and makes baffle 8 neither interfere the flow that the wind flowed for 35, also plays dirt-proof effect.
Referring to fig. 1, 3 and 4, the heat dissipation box 2 includes a heat dissipation box shell 201, a screw rod 202 is rotatably installed inside the heat dissipation box shell 201, the screw rod 202 is arranged, a threaded sleeve 208 is screwed on the surface of the screw rod 202, and a connecting plate 209 is fixed between the threaded sleeve 208 and a linear guide rail 207; the two ends of the screw rod 202 are fixedly arranged on the two sides of the inner wall of the radiating box shell 201 through bearing seats 214, one end of the screw rod 202 is fixedly provided with a first synchronous belt pulley 203, a motor 204 is fixedly arranged on one side, located on the inner wall of the radiating box shell 201, above the screw rod 202, the motor 204 is fixedly arranged on one side inside the radiating box shell 201 through a U-shaped frame 215, an output shaft end of the motor 204 is fixedly provided with a second synchronous belt pulley 205, when the variable frequency controller body 1 is electrified, the motor 204 is electrified and started simultaneously, the screw rod 202 is driven to rotate through a synchronous belt 206, so that a radiating fan 7 on a connecting plate 209 is driven to; the first synchronous pulley 203 and the second synchronous pulley 205 are in transmission connection through a synchronous belt 206.
Referring to fig. 1, 3 and 4, a linear guide 207 is fixedly installed at the top of the radiator box shell 201, and a threaded sleeve 208 is screwed on the surface of the screw rod 202; a connecting plate 209 is fixedly installed between the threaded sleeve 208 and the linear guide rail 207, a heat radiation fan 7 is also fixedly installed on one side of the connecting plate 209, through holes 216 are formed in the connecting plate 209 at the installation positions of the two groups of heat radiation fans 7, and the through holes 216 are formed, so that a channel for air circulation is formed in the heat radiation fan 7 to dissipate heat; two groups of guide strips 210 are symmetrically arranged on one side of the radiating box shell 201, the guide strips 210 are in clearance fit with the sliding grooves 5, and the variable frequency controller body 1 and the radiating box 2 are quickly installed by utilizing the clearance fit of the guide strips 210 and the sliding grooves 5; an elastic plunger 213 is screwed in the guide strip 210, two groups of positioning strips 9 are symmetrically arranged on one side in the variable frequency controller body 1, and the positioning strips 9 are used for providing carriers for arranging the sliding grooves 5; the sliding groove 5 is formed in the positioning strip 9, and a positioning hole 10 is formed in the sliding groove 5; the elastic plunger 213 is matched with the positioning hole 10 for use, when the elastic plunger 213 slides into the positioning hole 10, the positioning effect is achieved on the mounting structure, and when the mounting structure needs to be dismounted, the mounting structure can be easily dismounted by manual pushing; micro switches 211 are arranged on two sides of the linear guide rail 207 in the heat dissipation box shell 201, the two groups of micro switches 211 are electrically connected with the motor 204, the micro switches 211 are fixedly arranged on two sides of the inner wall of the heat dissipation box shell 201 through a support 218, the micro switches 211 are arranged to control the motor 204 to rotate forwards and reversely, the back-and-forth movement of the connecting plate 209 is realized, and the heat dissipation area and the heat dissipation speed are increased; the equidistant array of radiator box shell 201 one side has louvre 212, through-hole 216 one side is located radiator box shell 201 inner wall fixed mounting has dustproof otter board 217, sets up dustproof otter board 217, effectively prevents to get into the dust in the variable frequency controller body 1 when not interfering the heat dissipation.
The motor 204 is a micro motor, and is driven by the first synchronous pulley 203 and the second synchronous pulley 205, so that the use power of the motor 204 is reduced, electricity is saved, the overall dimension of the motor 204 is smaller, the installation space is saved, and a quick connector is installed at the terminal of the motor 204 and is electrically connected with the variable frequency controller body 1 during installation.
The structure principle is as follows: set up a set of convenient to detach's back shroud 4 in frequency conversion controller body 1 outside one side, set up symmetrical radiator fan 7 in its outer wall both sides, and have the radiating groove 6 of baffle 8 at its top equidistance array, supply its heat dissipation, when frequency conversion controller body 1's service environment changed (for example, the internal or intensive circumstances such as adjacent electronic components of closed electrical cabinet), a set of heat dissipation case 2 of spout 5 quick installation that usable back shroud 4 one side was seted up, reinforcing radiating effect.
In heat dissipation case 2, utilize lead screw 202 to drive radiator fan 7 and remove, during the use, make motor 204 circular telegram, it is rotatory to drive lead screw 202 through hold-in range 206, cooperation linear guide 207 to drive radiator fan 7 on the connecting plate 209 and remove, increase heat radiating area, pass through louvre 212 discharge variable frequency controller body 1 with the heat fast, improve the radiating efficiency.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a frequency conversion controller convenient to heat dissipation, includes frequency conversion controller body (1) and heat dissipation case (2), its characterized in that:
a control button (3) is arranged on one side of the outer portion of the variable frequency controller body (1), a rear cover plate (4) is fixedly mounted on one side, far away from the control button (3), of the outer portion of the variable frequency controller body (1), two groups of sliding grooves (5) are symmetrically formed in one side, close to the rear cover plate (4), of the inner portion of the variable frequency controller body (1), radiating grooves (6) are arrayed in the top of the variable frequency controller body (1) at equal intervals, and radiating fans (7) are symmetrically arranged on two sides of each radiating groove (6) and located on the outer wall of the variable frequency controller body (1;
the radiating box (2) comprises a radiating box shell (201), a screw rod (202) is installed inside the radiating box shell (201) in a rotating mode, a first synchronous pulley (203) is fixedly installed at one end of the screw rod (202), a motor (204) is fixedly installed on one side of the inner wall of the radiating box shell (201) above the screw rod (202), a second synchronous pulley (205) is fixedly installed at the output shaft end of the motor (204), the first synchronous pulley (203) and the second synchronous pulley (205) are connected through a synchronous belt (206) in a transmission mode, a linear guide rail (207) is fixedly installed at the top of the radiating box shell (201), a threaded sleeve (208) is connected to the surface of the screw rod (202) in a threaded mode, a connecting plate (209) is fixedly installed between the threaded sleeve (208) and the linear guide rail (207), a radiating fan (7) is also fixedly installed on one side of the connecting plate (209), two groups of guide bars (210, conducting bar (210) and spout (5) clearance fit, it all is provided with micro-gap switch (211) to lie in linear guide (207) both sides in radiator-box shell (201), and is two sets of micro-gap switch (211) all with motor (204) electric connection, radiator-box shell (201) one side equidistance array has louvre (212).
2. The variable frequency controller facilitating heat dissipation of claim 1, wherein: baffle (8) are provided with above radiating groove (6), baffle (8) are the slope setting, and inclination is 35.
3. The variable frequency controller facilitating heat dissipation of claim 1, wherein: two sets of location strips (9) are symmetrically arranged on one side inside the variable frequency controller body (1), the sliding groove (5) is arranged in the location strips (9), and a location hole (10) is formed in the sliding groove (5).
4. The variable frequency controller facilitating heat dissipation of claim 3, wherein: elastic plungers (213) are screwed in the guide bars (210), and the elastic plungers (213) are matched with the positioning holes (10) for use.
5. The variable frequency controller facilitating heat dissipation of claim 1, wherein: and two ends of the screw rod (202) are fixedly arranged on two sides of the inner wall of the radiator box shell (201) through bearing seats (214).
6. The variable frequency controller facilitating heat dissipation of claim 1, wherein: the motor (204) is fixedly arranged on one side of the interior of the radiator shell (201) through a U-shaped frame (215).
7. The variable frequency controller facilitating heat dissipation of claim 1, wherein: through holes (216) are formed in the connecting plate (209) at the mounting positions of the two groups of radiating fans (7).
8. The variable frequency controller facilitating heat dissipation of claim 7, wherein: one side of the through hole (216) is positioned on the inner wall of the radiating box shell (201) and is fixedly provided with a dustproof screen plate (217).
9. The variable frequency controller facilitating heat dissipation of claim 1, wherein: the two groups of micro switches (211) are fixedly arranged on two sides of the inner wall of the radiating box shell (201) through a support (218).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911016440.5A CN110829795A (en) | 2019-10-24 | 2019-10-24 | Frequency conversion controller convenient to heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911016440.5A CN110829795A (en) | 2019-10-24 | 2019-10-24 | Frequency conversion controller convenient to heat dissipation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110829795A true CN110829795A (en) | 2020-02-21 |
Family
ID=69550300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911016440.5A Pending CN110829795A (en) | 2019-10-24 | 2019-10-24 | Frequency conversion controller convenient to heat dissipation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110829795A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11135972A (en) * | 1997-10-30 | 1999-05-21 | Denso Corp | Housing cooling device |
| DE29920297U1 (en) * | 1999-11-18 | 2000-02-03 | Mou Chin Wei | power adapter |
| CN1374734A (en) * | 2001-03-08 | 2002-10-16 | 徐志瑶 | Double-cooling fan-type triphase AC variable frequency speed-regulating motor and its reforming technology |
| CN1897804A (en) * | 2005-07-15 | 2007-01-17 | 撼讯科技股份有限公司 | Auxiliary radiator |
| CN207603463U (en) * | 2017-12-06 | 2018-07-10 | 嘉兴伏尔电子科技有限公司 | A kind of list bipolar mixture type inverter power supply |
| CN208299677U (en) * | 2018-11-14 | 2018-12-28 | 杭州中美埃梯梯泵业有限公司 | A kind of frequency converter of fastening structure |
| CN208489810U (en) * | 2018-06-13 | 2019-02-12 | 广州华重机电设备有限公司 | A kind of energy saver promoting motor energy efficiency |
| CN110198621A (en) * | 2019-07-02 | 2019-09-03 | 帕格曼科技(太仓)有限公司 | A kind of radiator of weak current box |
| CN209462861U (en) * | 2018-11-30 | 2019-10-01 | 沃陆(上海)传动系统有限公司 | A kind of high-voltage frequency converter heat radiation box |
-
2019
- 2019-10-24 CN CN201911016440.5A patent/CN110829795A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11135972A (en) * | 1997-10-30 | 1999-05-21 | Denso Corp | Housing cooling device |
| DE29920297U1 (en) * | 1999-11-18 | 2000-02-03 | Mou Chin Wei | power adapter |
| CN1374734A (en) * | 2001-03-08 | 2002-10-16 | 徐志瑶 | Double-cooling fan-type triphase AC variable frequency speed-regulating motor and its reforming technology |
| CN1897804A (en) * | 2005-07-15 | 2007-01-17 | 撼讯科技股份有限公司 | Auxiliary radiator |
| CN207603463U (en) * | 2017-12-06 | 2018-07-10 | 嘉兴伏尔电子科技有限公司 | A kind of list bipolar mixture type inverter power supply |
| CN208489810U (en) * | 2018-06-13 | 2019-02-12 | 广州华重机电设备有限公司 | A kind of energy saver promoting motor energy efficiency |
| CN208299677U (en) * | 2018-11-14 | 2018-12-28 | 杭州中美埃梯梯泵业有限公司 | A kind of frequency converter of fastening structure |
| CN209462861U (en) * | 2018-11-30 | 2019-10-01 | 沃陆(上海)传动系统有限公司 | A kind of high-voltage frequency converter heat radiation box |
| CN110198621A (en) * | 2019-07-02 | 2019-09-03 | 帕格曼科技(太仓)有限公司 | A kind of radiator of weak current box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210840503U (en) | Improved heat dissipation device for power controller | |
| CN201690342U (en) | Inverter air-cooled heat dissipation system structure | |
| CN201063527Y (en) | Large-power high-voltage frequency conversion inverter | |
| CN110829795A (en) | Frequency conversion controller convenient to heat dissipation | |
| CN216700803U (en) | Prevent overheated data center rack | |
| CN215379458U (en) | Intelligence moisturizing switch board | |
| CN109245555B (en) | Synchronous rectification high-frequency switch power supply | |
| CN112510891A (en) | Safety protection device of high-efficient motor | |
| CN212511291U (en) | Fan-free induction cooker | |
| CN219204383U (en) | Variable-frequency heat dissipation cooling device for high-voltage high-power motor | |
| CN201063526Y (en) | Large-power high-voltage frequency conversion commutator | |
| CN219247285U (en) | Industrial electricity energy-saving electricity-saving equipment | |
| CN112533434A (en) | Inversion module | |
| CN218998617U (en) | High-efficient radiating supersonic generator | |
| CN218675396U (en) | Heat dissipation formula photovoltaic module | |
| CN219536719U (en) | Frequency conversion cabinet heat radiation structure with high heat conduction channel | |
| CN214124570U (en) | Heat insulation device of high-voltage switch cabinet | |
| CN217362933U (en) | Intelligent remote medium-voltage soft starter | |
| CN217215643U (en) | High-efficient radiating low-voltage distribution cabinet | |
| CN210380625U (en) | Cascade topology converter that heat dispersion is good | |
| CN214125027U (en) | Forced heat-extraction cooling device for synchronous motor | |
| CN216290642U (en) | ABB converter with heat radiation structure | |
| CN219698266U (en) | Vehicle-mounted flameproof variable-frequency control cabinet | |
| CN220440500U (en) | Heat dissipation type three-phase asynchronous motor | |
| CN220492520U (en) | Ventilation power distribution cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
|
| RJ01 | Rejection of invention patent application after publication |