CN112367824B - Electric energy metering box - Google Patents
Electric energy metering box Download PDFInfo
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- CN112367824B CN112367824B CN202011472871.5A CN202011472871A CN112367824B CN 112367824 B CN112367824 B CN 112367824B CN 202011472871 A CN202011472871 A CN 202011472871A CN 112367824 B CN112367824 B CN 112367824B
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- heat dissipation
- driving
- metering box
- drive
- telescopic cavity
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- 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
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
-
- 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
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses an electric energy metering box, which relates to the technical field of metering boxes, and the technical scheme of the electric energy metering box is characterized by comprising a metering box body, wherein a heat dissipation mechanism is arranged in the metering box body; the heat dissipation mechanism comprises a combined mutual inductor and a heat dissipation telescopic cavity sleeved on the combined mutual inductor, wherein the inner side surface of the heat dissipation telescopic cavity is provided with a plurality of arrays distributed and oriented to the air inlet and outlet holes of the combined mutual inductor, the heat dissipation telescopic cavity is connected with a driving piece used for driving the heat dissipation telescopic cavity to stretch and retract so as to enable the combined mutual inductor to perform heat dissipation treatment, and the driving piece is sleeved on the combined mutual inductor and used for absorbing heat on the combined mutual inductor. According to the invention, the heat on the combined transformer is absorbed by the heat dissipation telescopic cavity and the driving piece, so that the purpose of remarkably improving the heat dissipation performance of the electric energy metering box is realized, and the combined transformer has the effect of high use stability.
Description
Technical Field
The invention relates to the technical field of metering boxes, in particular to an electric energy metering box.
Background
The electric energy metering box is conventional metering equipment and is a necessary device before a power line enters a house; particularly, in recent years, with the development of economy, the acceleration of the pace of urbanization construction and the acceleration of industrial upgrading, particularly the popularization of household appliances, the specific gravity of electricity consumption of third-generation industry and residents is continuously increased, so that the power demand is continuously increased, and the country increases the investment on power infrastructure including rural power grid transformation, urban transformation and the like, so that the electric energy metering box has wide development space as a power product terminal meter.
Chinese patent application publication No. CN105548633A discloses an electric energy metering box, which comprises a box body, the box body is divided into a plurality of small inner chambers by baffles, a chamber door is arranged between each small inner chamber and the box body, a main box door is arranged on the box body, the small inner chambers are separated from the small inner chambers by heat insulation plates, and heat dissipation holes are arranged on the side walls of the box body.
But this electric-energy metering box only realizes the heat dissipation function through louvre and heating panel, and the radiating effect is poor, and then influences electric-energy metering box's stable use, awaits improving.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an electric energy metering box which has the effects of effective heat dissipation and stable use.
In order to achieve the purpose, the invention provides the following technical scheme:
an electric energy metering box comprises a metering box body, wherein a heat dissipation mechanism is arranged in the metering box body; the heat dissipation mechanism comprises a combined mutual inductor and a heat dissipation telescopic cavity sleeved on the combined mutual inductor, wherein the inner side surface of the heat dissipation telescopic cavity is provided with a plurality of arrays distributed and oriented to the air inlet and outlet holes of the combined mutual inductor, the heat dissipation telescopic cavity is connected with a driving piece used for driving the heat dissipation telescopic cavity to stretch and retract so as to enable the combined mutual inductor to perform heat dissipation treatment, and the driving piece is sleeved on the combined mutual inductor and used for absorbing heat on the combined mutual inductor.
By adopting the technical scheme, the heat dissipation telescopic cavity sleeved on the combined mutual inductor is compressed along with the driving of the driving piece, so that heat dissipation air flow is conveyed to the combined mutual inductor, and after the air flow is mixed, the heat dissipation telescopic cavity extends to absorb hot air; meanwhile, the heat on the combined transformer is absorbed through the driving piece sleeved on the combined transformer, the purpose of remarkably improving the heat dissipation performance of the electric energy metering box is achieved, and the combined transformer further has the effect of high use stability.
The invention is further configured to: a condenser and a dehumidifier are arranged in the heat dissipation telescopic cavity.
Through adopting above-mentioned technical scheme, the condenser plays the effect of release air conditioning in order to get rid of the heat, and the dehumidifier plays the effect of getting rid of gaseous vapor, and then reaches and prevents that the vapor condensation from influencing the purpose of combination transformer stability in use.
The invention is further configured to: the driving piece comprises a plurality of poking rods, a driving swing rod connected with one end of each poking rod and a plurality of heat dissipation units driven by the driving swing rods simultaneously, a plurality of swing grooves which are distributed in an equal radian mode and are matched with the corresponding driving swing rods respectively are formed in the side face of the periphery of the combined transformer, one end of each poking rod is connected with a rotating hinge rod in each swing groove in a splicing mode, the poking rods are connected in a rotating mode, the other end of each poking rod is provided with a butt poking head used for being abutted to one end of the heat dissipation telescopic cavity, and the other end of the heat dissipation telescopic cavity is fixedly connected with the metering box body.
Through adopting above-mentioned technical scheme, the drive poker rod pivoted effect is realized when making the drive pendulum rod rotate to the heat dissipation unit to the flexible cavity of butt shifting block compression heat dissipation through the poker rod again to make the flexible cavity compression of heat dissipation carry the heat dissipation air current to the combination mutual-inductor, and then reach stable radiating effect, make this electric-energy metering box have effective heat dissipation and use stable effect.
The invention is further configured to: the heat dissipation unit is including cup jointing combination mutual-inductor is kept away from the drive lantern ring of poker rod one end and is used for the drive lantern ring is followed combination mutual-inductor axis direction is reciprocating motion's drive bull stick, the drive lantern ring orientation the one end inboard of drive pendulum rod be provided with be used for with drive pendulum rod butt and drive oblique wall in the drive pendulum rod pivoted butt, and be provided with in the swing inslot with corresponding the elastic component of the medial surface butt of drive pendulum rod.
Through adopting above-mentioned technical scheme, the drive lantern ring cup joints on the combination mutual-inductor in order to absorb the heat on the combination mutual-inductor, and then does under the drive of drive bull stick and do reciprocating motion along combination mutual-inductor axis direction, and then realizes making drive pendulum rod pivoted effect, has that the structure operation is stable and effective radiating effect.
The invention is further configured to: one end of the driving swing rod, which is far away from the poke rod, is provided with a contact supporting ball, and the contact supporting ball is used for being abutted against the inner oblique wall of the abutment.
Through adopting above-mentioned technical scheme, the butt touches the butt contact ball and the butt interior skew wall butt of butt and will show the butt resistance that reduces drive pendulum rod and drive lantern ring to realize further promoting the rotational stability's of drive pendulum rod effect.
The invention is further configured to: the outside of the drive lantern ring is provided with drive screw thread, the drive bull stick has cup jointed two spacing lantern rings, and is provided with from two wear out between the spacing lantern ring and insert in the drive screw thread with drive thread engagement's drive synapse.
Through adopting above-mentioned technical scheme, when the drive bull stick rotated, made the drive synapse rotate between two spacing lantern rings, and then made the drive lantern ring rotate under with drive threaded engagement again, realized making the drive lantern ring steady rotation in order to realize the purpose of the compression and the extension of the flexible cavity of control heat dissipation, had simple structure and the convenient effect of control.
The invention is further configured to: the driving rotating rod is connected with a hand rotating wheel or a stepping motor.
Through adopting above-mentioned technical scheme, hand reel or step motor make drive bull stick rotate and can realize the effective heat dissipation of this electric-energy metering box, have simple structure and control convenient effect.
The invention is further configured to: the specific heat capacity of the driving lantern ring is smaller than that of the combined transformer; and in the reciprocating motion of the driving lantern ring, the driving lantern ring is inserted into the inner side of the heat dissipation telescopic cavity and reciprocates out of the inner side of the heat dissipation telescopic cavity.
Through adopting above-mentioned technical scheme, make the drive lantern ring effective absorption make the heat on the mutual-inductor, and then the heat dissipation through the drive lantern ring is in order to realize further promoting the effect of this electric-energy metering box's heat dispersion.
In conclusion, the invention has the following beneficial effects: the rotation and the removal of the rotation control drive lantern ring through the drive bull stick, and then realize making the drive pendulum rod rotate the back and make the poker rod stir the flexible cavity of heat dissipation, realize the effective heat dissipation of combination mutual-inductor, show heat dispersion and the stability in use who promotes this electric-energy metering box.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
fig. 2 is a schematic structural diagram of the heat dissipation mechanism of the present embodiment;
fig. 3 is a schematic cross-sectional structure diagram of the heat dissipation mechanism of the present embodiment.
Description of reference numerals: 1. a batch tank body; 11. a heat dissipation layer; 12. a circulating air layer; 2. a heat dissipation mechanism; 21. a combined transformer; 211. a swing groove; 22. a heat dissipation telescopic cavity; 221. air inlet and outlet holes; 23. a drive collar; 231. abutting the inner sloped wall; 232. a drive screw; 24. driving the rotating rod; 241. a limiting lantern ring; 242. driving a synapse; 25. a poke rod; 251. abutting against the shifting block; 252. rotating the hinge rod; 253. driving the swing rod; 254. against the contact ball.
Detailed Description
In order to make the technical solution and advantages of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, an electric energy metering box comprises a metering box body 1. The metering box body 1 is composed of a heat dissipation layer 11 and circulating air layers 12 located at the upper end and the lower end of the heat dissipation layer 11. The heat dissipation layer 11 has the functions of effectively dissipating heat and reinforcing the metering box body 1; the circulating air layer 12 is provided with air inlet and outlet slots for air to flow and achieve the purpose of effective heat dissipation.
As shown in fig. 1 and 2, a heat radiation mechanism 2 is provided in the batch tank body 1. The heat dissipation mechanism 2 comprises a combined transformer 21 and a heat dissipation telescopic cavity 22 sleeved on the combined transformer 21. The inner side surface of the heat dissipation expansion cavity 22 is provided with a plurality of air inlet and outlet holes 221 (see fig. 3) which are distributed in an array and face the combined transformer 21. The heat dissipation telescopic cavity 22 is connected with a driving piece for driving the heat dissipation telescopic cavity 22 to stretch so as to perform heat dissipation treatment on the combined transformer 21. And the driving member is sleeved on the combined transformer 21 and is used for absorbing heat on the combined transformer 21. Therefore, the heat dissipation telescopic cavity 22 sleeved on the combined transformer 21 is compressed along with the driving of the driving part, so as to convey heat dissipation air flow to the combined transformer 21, and after the air flow is mixed, the heat dissipation telescopic cavity 22 extends to absorb hot air; meanwhile, the heat on the combined transformer 21 is absorbed by the driving piece sleeved on the combined transformer 21, the purpose of remarkably improving the heat dissipation performance of the electric energy metering box is achieved, and the combined transformer 21 has the effect of high use stability.
As shown in fig. 2 and 3, a condenser and a dehumidifier are provided in the heat-dissipating telescopic chamber 22. The condenser plays the effect of releasing cold air in order to get rid of the heat, and the dehumidifier plays the effect of getting rid of aqueous vapor in the gas, and then reaches and prevents that the aqueous vapor condensation from influencing the purpose of combination transformer 21 stability in use. It should be noted that the driving member includes a plurality of tap levers 25, a driving swing link 253 connected to one end of the corresponding tap lever 25, and a heat dissipation unit for simultaneously driving the plurality of driving swing links 253 to rotate. A plurality of swing grooves 211 which are distributed in an equal radian and are respectively matched with the corresponding driving swing rods 253 are arranged on the peripheral side surface of the combined transformer 21. One end of the tap lever 25 is provided with a rotary hinge rod 252 inserted into the swing groove 211 and rotatably connecting the tap lever 25 to the swing groove 211. The other end of the poke rod 25 is provided with an abutting poke head 251 which is used for abutting against one end of the heat dissipation telescopic cavity 22. And the other end of the heat dissipation telescopic cavity 22 is fixedly connected with the metering box body 1. Therefore, when the driving swing rod 253 is driven to rotate by the heat dissipation unit, the effect of driving the poking rod 25 to rotate is realized, and then the heat dissipation telescopic cavity 22 is compressed by the abutting poking head 251 of the poking rod 25, so that the heat dissipation telescopic cavity 22 is compressed and then conveys heat dissipation airflow to the combined transformer 21, and further the effect of stabilizing heat dissipation is achieved, and the electric energy metering box has the effects of effective heat dissipation and stable use.
Meanwhile, the heat dissipation unit comprises a driving lantern ring 23 sleeved at one end of the combined transformer 21 far away from the poke rod 25 and a driving rotating rod 24 used for driving the driving lantern ring 23 to reciprocate along the axial direction of the combined transformer 21. An abutting inner inclined wall 231 for abutting against the driving swing link 253 and driving the driving swing link 253 to rotate is arranged on the inner side of one end, facing the driving swing link 253, of the driving collar 23, and an elastic piece abutting against the inner side face of the corresponding driving swing link 253 is arranged in the swing groove 211. Therefore, the driving sleeve ring 23 sleeved on the combined transformer 21 absorbs heat on the combined transformer 21, and then performs reciprocating motion along the axial direction of the combined transformer 21 under the driving of the driving rotating rod 24 to perform an effective heat dissipation effect, so that the effect of driving the swinging rod 253 to rotate is realized, and the structure has the effects of stable operation and effective heat dissipation. Meanwhile, the specific heat capacity of the driving collar 23 is smaller than that of the combined transformer 21; in the reciprocating motion of the driving lantern ring 23, the driving lantern ring 23 is inserted into the inner side of the heat dissipation telescopic cavity 22 and is in reciprocating motion penetrating out of the inner side of the heat dissipation telescopic cavity 22, so that heat on the combined transformer 21 is effectively absorbed through the driving lantern ring 23, and the heat dissipation performance of the electric energy metering box is further improved through the heat dissipation of the driving lantern ring 23.
As shown in fig. 3, a contact ball 254 is disposed at an end of the driving swing link 253 remote from the tap lever 25. The contact ball 254 is used for abutting with the inner abutting inclined wall 231, and then when the inner abutting inclined wall 231 abuts with the contact ball 254, the abutting resistance of the driving swing link 253 and the driving sleeve ring 23 is obviously reduced, so that the effect of further improving the rotation stability of the driving swing link 253 is realized. It should be mentioned that the drive screw 232 is provided on the outside of the drive collar 23. The drive turn bar 24 is sleeved with two stop collars 241 and is provided with a drive synapse 242 which passes between the two stop collars 241 and is inserted into the drive thread 232 to engage the drive thread 232. Therefore, when the driving rotating rod 24 rotates, the driving synapse 242 rotates between the two limiting lantern rings 241, and then the driving lantern ring 23 rotates under the engagement with the driving thread 232, so that the purpose of controlling the compression and extension of the heat dissipation telescopic cavity 22 by stably rotating the driving lantern ring 23 is achieved, and the heat dissipation telescopic cavity has the effects of simple structure and convenience in control. Correspondingly, the driving rotary rod 24 is connected with a hand rotary wheel or a stepping motor. The hand-operated wheel or the stepping motor drives the rotating rod 24 to rotate, so that the effective heat dissipation of the electric energy metering box can be realized, and the electric energy metering box has the effects of simple structure and convenience in control.
In conclusion, this application drives the rotation and the removal of lantern ring 23 through the rotation control of drive bull stick 24, and then realizes making the drive pendulum rod 253 rotate the back and make poker rod 25 stir the flexible cavity 22 of heat dissipation, realizes the effective heat dissipation of combination mutual-inductor 21, is showing heat dispersion and the stability in use who promotes this electric-energy metering box.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the present invention may occur to those skilled in the art without departing from the principle of the present invention, and such modifications and embellishments should also be considered as within the scope of the present invention.
Claims (8)
1. The utility model provides an electric energy metering box, includes batch meter body (1), its characterized in that: a heat dissipation mechanism (2) is arranged in the metering box body (1); the heat dissipation mechanism (2) comprises a combined transformer (21) and a heat dissipation telescopic cavity (22) sleeved on the combined transformer (21), wherein a plurality of arrays are distributed on the inner side surface of the heat dissipation telescopic cavity (22) and face towards the air inlet and outlet holes (221) of the combined transformer (21), the heat dissipation telescopic cavity (22) is connected with a driving part for driving the heat dissipation telescopic cavity (22) to stretch out and draw back, so as to be right the driving part for heat dissipation processing of the combined transformer (21), and the driving part is sleeved on the combined transformer (21) and used for absorbing heat on the combined transformer (21).
2. An electric energy metering box according to claim 1, characterized in that: a condenser and a dehumidifier are arranged in the heat dissipation telescopic cavity (22).
3. An electric energy metering box according to claim 1, characterized in that: the driving piece comprises a plurality of poking rods (25), a driving swing rod (253) connected with one end of each poking rod (25) and a plurality of driving heat dissipation units which drive the driving swing rod (253) to rotate, a plurality of swing grooves (211) which are distributed in an equal radian mode and are matched with the driving swing rod (253) are formed in the side face of the periphery of the combined mutual inductor (21), the poking rods (25) are connected with rotating hinged rods (252) in the swing grooves (211) in a rotating mode in a splicing mode, one end of each poking rod (25) is provided with a poking head (251) which is connected with one end of each heat dissipation telescopic cavity (22) in a butt mode, and the other end of each heat dissipation telescopic cavity (22) is fixedly connected with the metering box body (1).
4. An electric energy metering box according to claim 3, characterized in that: the radiating unit is including cup jointing combination transformer (21) are kept away from drive lantern ring (23) and the drive that is used for driving poker rod (25) one end drive lantern ring (23) are followed reciprocating motion's drive bull stick (24) is to combination transformer (21) axis direction, drive lantern ring (23) orientation the one end inboard of drive pendulum rod (253) be provided with be used for with drive pendulum rod (253) butt and drive skew wall (231) in drive pendulum rod (253) pivoted butt, and be provided with in swing groove (211) with corresponding the elastic component of the medial surface butt of drive pendulum rod (253).
5. An electric energy metering box according to claim 4, characterized in that: one end, far away from the poke rod (25), of the driving swing rod (253) is provided with a contact supporting ball (254), and the contact supporting ball (254) is used for being abutted against the inner abutting inclined wall (231).
6. An electric energy metering box according to claim 4, characterized in that: the outer side of the driving lantern ring (23) is provided with a driving thread (232), the driving rotating rod (24) is sleeved with two limiting lantern rings (241), and a driving synapse (242) penetrates out of the two limiting lantern rings (241) and is inserted into the driving thread (232) to be meshed with the driving thread (232) is arranged.
7. An electric energy metering box according to claim 6, characterized in that: the driving rotating rod (24) is connected with a hand rotating wheel or a stepping motor.
8. An electric energy metering box according to claim 6, characterized in that: the specific heat capacity of the driving collar (23) is smaller than that of the combined transformer (21); and in the reciprocating motion of the driving lantern ring (23), the driving lantern ring (23) is inserted into the inner side of the heat dissipation telescopic cavity (22) and reciprocates out of the inner side of the heat dissipation telescopic cavity (22).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020109417241 | 2020-09-09 | ||
| CN202010941724 | 2020-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112367824A CN112367824A (en) | 2021-02-12 |
| CN112367824B true CN112367824B (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011472871.5A Active CN112367824B (en) | 2020-09-09 | 2020-12-15 | Electric energy metering box |
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| CN (1) | CN112367824B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102238848A (en) * | 2010-04-27 | 2011-11-09 | 富瑞精密组件（昆山）有限公司 | Heat dissipation device and airflow generator thereof |
| CN205091376U (en) * | 2015-11-06 | 2016-03-16 | 国网山东省电力公司菏泽供电公司 | Movable type electric power metering box |
| JP2016047579A (en) * | 2014-08-28 | 2016-04-07 | Dmg森精機株式会社 | Voltage transformer for machine tool, and machine tool having the same |
| CN106574638A (en) * | 2014-08-28 | 2017-04-19 | 通用电气航空系统有限责任公司 | Air-cooling system and airflow generator |
| CN107642483A (en) * | 2016-07-20 | 2018-01-30 | 杨杰 | A kind of piezoelectric ceramics blower fan |
| CN207233523U (en) * | 2017-09-27 | 2018-04-13 | 保定市冀中电力设备有限责任公司 | Heat radiating type prepayment intelligent combination transformer |
| CN110195724A (en) * | 2019-07-05 | 2019-09-03 | 常州威图流体科技有限公司 | A kind of piezoelectric fan, radiator and electronic equipment |
| CN210223727U (en) * | 2019-07-10 | 2020-03-31 | 成都市晨曦电力有限责任公司 | High-efficient transformer heat abstractor |
-
2020
- 2020-12-15 CN CN202011472871.5A patent/CN112367824B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102238848A (en) * | 2010-04-27 | 2011-11-09 | 富瑞精密组件（昆山）有限公司 | Heat dissipation device and airflow generator thereof |
| JP2016047579A (en) * | 2014-08-28 | 2016-04-07 | Dmg森精機株式会社 | Voltage transformer for machine tool, and machine tool having the same |
| CN106574638A (en) * | 2014-08-28 | 2017-04-19 | 通用电气航空系统有限责任公司 | Air-cooling system and airflow generator |
| CN205091376U (en) * | 2015-11-06 | 2016-03-16 | 国网山东省电力公司菏泽供电公司 | Movable type electric power metering box |
| CN107642483A (en) * | 2016-07-20 | 2018-01-30 | 杨杰 | A kind of piezoelectric ceramics blower fan |
| CN207233523U (en) * | 2017-09-27 | 2018-04-13 | 保定市冀中电力设备有限责任公司 | Heat radiating type prepayment intelligent combination transformer |
| CN110195724A (en) * | 2019-07-05 | 2019-09-03 | 常州威图流体科技有限公司 | A kind of piezoelectric fan, radiator and electronic equipment |
| CN210223727U (en) * | 2019-07-10 | 2020-03-31 | 成都市晨曦电力有限责任公司 | High-efficient transformer heat abstractor |
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| Publication number | Publication date |
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| CN112367824A (en) | 2021-02-12 |
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