CN201590988U - Electric box heat radiation structure, electric box and ventilation unit - Google Patents
Electric box heat radiation structure, electric box and ventilation unit Download PDFInfo
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- CN201590988U CN201590988U CN2010201143550U CN201020114355U CN201590988U CN 201590988 U CN201590988 U CN 201590988U CN 2010201143550 U CN2010201143550 U CN 2010201143550U CN 201020114355 U CN201020114355 U CN 201020114355U CN 201590988 U CN201590988 U CN 201590988U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 16
- 230000005855 radiation Effects 0.000 title abstract description 16
- 238000009434 installation Methods 0.000 claims description 29
- 230000001965 increasing effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000017525 heat dissipation Effects 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides an electric box heat radiation structure, it includes: the electric box cover plate seals the electric box body from the side part, one of the bottom and the top of the electric box cover plate is provided with an air inlet opening communicated with the external environment, and the other is provided with an air outlet opening; the first air guide component is arranged in the electric box body and positioned between the electric box cover plate and the electric appliance element in the electric box body, and the first air guide component is provided with a plate-shaped air guide part opposite to the electric appliance element in the electric box body. The utility model also provides an electric box and ventilation unit including above-mentioned electric box heat radiation structure.
Description
Technical field
The utility model relates to the heat radiation field, is specifically related to be used for electrical box radiator structure, electrical box and ventilation unit.
Background technology
The electrical control complexity of present DC frequency-changing unit, electric elements are many, and caloric value is big, and for guaranteeing the permanently effective operation and the useful life of unit, the heat dissipation design of electrical box is extremely important.In general frequency conversion unit electrical box design, only adopt radiator to dispel the heat.This electrical box design is applicable to the low power frequency conversion unit of 10kW～16kW, for the DC frequency-changing modularization unit more than the 25kW, when under bad working environments, moving, because running current is big, caloric value is big, the working temperature of electrical box temperature inside and inner electric elements self all can't satisfy the electrical safety instructions for use.Simultaneously, DC frequency-changing modularization unit is installed in abominable outdoor of condition of work, and electrical box must waterproof and dustproof and protection against the tide.Therefore, general electrical box is sealed construction, and the additional radiator of important electric component general using dispels the heat.Yet the structure and the size that are limited to electrical box, and the heat-sinking capability of radiator and cost are not the best ways by radiator heat-dissipation only.Some frequency conversion electrical box has increased heat radiation window design, but many and disperse for pyrotoxin, especially is positioned at the heater element of bottom or corner, because of heat can't in time distribute the temperature drift that causes self, thereby can't satisfy the requirement of electrical safety.Also have the electrical box of some DC frequency-changing to have the effect of air inducing, but owing to do not form rational air channel, the inreal high efficiency and heat radiation of realizing.
The utility model content
The purpose of this utility model provides a kind of radiator structure of electrical box, and it can realize the high efficiency and heat radiation to electrical box.
At above-mentioned purpose, provide a kind of electrical box radiator structure according to first aspect of the present utility model, it comprises: the electrical box cover plate, from sidepiece sealing electrical box body, one in the bottom of electrical box cover plate and the top is formed with the air intake opening that communicates with external environment condition, and another is formed with the air-out opening; The first wind-guiding member is arranged on the electrical box body interior, and between electrical box cover plate and the intrinsic electric elements of electrical box, the first wind-guiding member has the tabular air dam relative with the electric elements of electrical box body interior.
Preferably, according to electrical box radiator structure of the present utility model, wherein, the first wind-guiding member is the member with L shaped cross section.
Preferably, according to electrical box radiator structure of the present utility model, wherein, the integral level height of the tabular air dam of the first wind-guiding member is positioned on the air intake opening of electrical box cover plate.
Preferably, according to electrical box radiator structure of the present utility model, it also comprises: installation component, and the electrical box body is installed on its inboard, is formed with air inlet on the installation component; The second wind-guiding member is arranged between electrical box cover plate and the installation component, and the air intake opening of first side of the second wind-guiding member and electrical box cover plate bottom communicates, and second side communicates with the air inlet of installation component.
Preferably, according to electrical box radiator structure of the present utility model, wherein, has air-guiding aisle between the end face of electrical box body and the side of installation component.
Preferably, according to electrical box radiator structure of the present utility model, wherein, the member of the second wind-guiding member for increasing gradually from first side direction, second side.
Preferably, according to electrical box radiator structure of the present utility model, wherein, the air intake opening of electrical box cover plate and air-out open upper side edge are provided with downward-sloping baffle plate, and baffle plate is positioned at the electrical box cover plate outside.
Preferably, according to electrical box radiator structure of the present utility model, wherein, the integral level height of the air inlet of installation component is positioned under the air intake opening of electrical box cover plate bottom.
Preferably, according to electrical box radiator structure of the present utility model, wherein, the lower edge of the air inlet of installation component is provided with acclivitous air dam, and air dam is positioned at the inboard of installation component.
Also provide a kind of electrical box on the other hand according to of the present utility model, it comprises the electrical box radiator structure according to the utility model first aspect.
Also provide a kind of ventilation unit according to another aspect of the present utility model, it comprises according to the utility model electrical box on the other hand.
The utlity model has following technique effect:
The utility model provides a kind of radiator structure of electrical box, it has designed air duct structure and corresponding wind-guiding member and ventilation hole, make the zone that the air flow direction electric elements are concentrated, thereby make electric elements to dispel the heat fast, effectively reduce temperature in the electrical box and efficiently solve the problem of electrical box high efficiency and heat radiation, thereby guarantee that unit is under mal-condition and operating mode, electric elements are all worked in satisfactory temperature range, have improved the stability and the useful life of frequency conversion unit operation.And then the utility model has reached waterproof and dustproof and moistureproof purpose by designing baffle plate on ventilating opening, guarantees the good running environment of inside components and parts of electrical box.At this, of the present utility model simple in structure, keeping having improved assembling cheaply simultaneously, thereby improving production efficiency.
Should be appreciated that above generality is described and the following detailed description is all enumerated and illustrative, purpose is in order to provide further instruction to claimed the utility model.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the utility model.These accompanying drawings illustrate embodiment more of the present utility model, and are used for illustrating principle of the present utility model with specification.Identical in the accompanying drawings parts are represented with identical label.In the accompanying drawing:
Fig. 1 shows the three-dimensional structure diagram of employing according to the electrical box of radiator structure of the present utility model;
Fig. 2 shows employing another three-dimensional structure diagram according to the electrical box of radiator structure of the present utility model;
Fig. 3 shows the decomposition chart of employing according to the electrical box of radiator structure of the present utility model;
Fig. 4 shows the schematic diagram after employing is installed in the air-conditioning unit according to the electrical box of the radiator structure of a kind of execution mode of the utility model;
Fig. 5 shows the schematic diagram after employing is installed in the air-conditioning unit according to the electrical box of the radiator structure of the another kind of execution mode of the utility model.
Embodiment
Usually, all need to be equipped with electrical box in the large-scale unit equipment, various electric elements are installed in the electrical box, these electric elements can distribute a large amount of heats in the course of the work, become the main heater element of system, therefore need carry out radiating treatment to it.Heat dissipation box of the prior art mostly is enclosed construction, and portion installs that radiator comes for electric elements heat radiations additional but poor effect within it, and can be subjected to size restrictions.Also there is employing to offer the design of heat radiation window in electrical box end face or bottom surface, but this heat radiation window all is in set structure inside, can't with exterior, only rely on this heat radiation window can not obtain better heat radiating effect, and can't guarantee the good dust-proof waterproof effect.In addition, the structure of offering radiating opening in the electrical box side is also arranged, in this design, utilize additional air pipe that the blower fan apparatus of radiating opening with the outside communicated, thereby realize the heat radiation of moving air, but this radiator structure needs plus outer member and ventilation unit, and make is very complicated.Therefore, the utility model is at the shortcoming of above-mentioned prior art, proposed a kind of simple in structurely, and it is convenient to realize, the radiator structure of good heat dissipation effect.And this radiator structure of the present utility model can also provide the good dust-proof waterproof effect.Below with reference to accompanying drawings and in conjunction with preferred embodiment radiator structure embodiment of the present utility model is described.
At first, wherein show the electrical box that has adopted according to radiator structure of the present utility model with reference to Fig. 1-3.Shown in the decomposition view among Fig. 3, according to principle of the present utility model, this electrical box radiator structure mainly comprises: electrical box cover plate 13, a side of its sealing electrical box body 15, and the bottom of electrical box cover plate 13 and top are formed with the air intake opening 13a that is used for air-flow turnover and air-out opening 13b respectively (in illustrated embodiment, because the unit blower fan is arranged on electrical box top, therefore with the bottom be designed to air intake opening 13a, the top be air-out opening 13b); And the first wind-guiding member 14, it is arranged on electrical box body 15 inside, between the electric elements in electrical box cover plate 13 and electrical box body 15, this first wind-guiding member 14 has the tabular air dam 14a relative with the electric elements of electrical box body 15 inside, lead on its inner electric elements so that will enter air-flows in the electrical box body 15, thereby electric elements are effectively dispelled the heat.In unit blower fan running and after producing negative pressure, outside cold air is inhaled into electrical box body 15 inside by the ventilation orifice 13a of bottom, the tabular air dam 14a of the first wind-guiding member 14 is with the cold air guiding heating electric elements place that enters, in the airflow passes electric elements process heat of its generation is taken away, absorbed heat and the thermal current of heating and then the ventilation orifice 13b by the top flow out electrical box body 15.The flow direction of air-flow in electrical box body 15 as shown in Figure 4, the air-flow that flows out electrical box body 15 is inhaled into blower fan and then is rejected to the unit outside.Utilize above-mentioned radiator structure, electrical box of the present utility model can effectively be dispelled the heat.
As previously described, electrical box of the prior art is generally full-enclosed structure, adopts to dispel the heat in the mode of inner attached heat sinks, and the radiating effect of this radiator structure can't satisfy the instructions for use of bad working environments.In the utility model, adopt the radiator structure of air duct type, by forming air intake opening 13a and the air-out opening 13b that turnover wind is used in electrical box cover plate 13 bottoms and top, the first wind-guiding member 14 is set in electrical box body 15 simultaneously, form heat dissipation wind channel thus from the electrical box bottom to the top, air-flow flows through in electrical box body 15 inside along the air channel that said structure forms, each electric elements of under the guiding of the first wind-guiding member 14, flowing through simultaneously, thus realization is to the heat radiation of electric elements.Radiator structure of the present utility model forms air intake opening 13a and air-out opening 13b on the cover plate 13 of electrical box sidepiece, thus dustproof and waterproof effectively.The make of this radiator structure that the utility model adopts is simple, realizes that cost is low, can effectively reduce the electrical box temperature inside, improves the stability and the useful life of frequency conversion unit operation.
As mentioned above, in the embodiment shown in Fig. 4,5, the ventilation orifice of the bottom of electrical box cover plate 13 is air intake opening 13a and the ventilation orifice at top is air-out opening 13b.This is by the decision of the installation site of electrical box and air-conditioning unit blower fan, in other embodiment (for example, the unit blower fan is arranged on the situation of electrical box below), the ventilation orifice that can make the bottom of electrical box cover plate 13 is air-out opening 13a and the ventilation orifice at top is air intake opening 13b.
And then, in order to obtain good wind effect, the top of the air intake opening 13a that preferably is arranged on electrical box cover plate 13 of the first wind-guiding member 15, thereby the electric elements that the feasible air-flows that enter from the bottom in the electrical box body 15 are successfully guided to electrical box body 15 inside by the first wind-guiding member 14.Particularly, the first wind-guiding member 14 can be the board member in L shaped cross section, and a side of L shaped member forms tabular air dam 14a, and another side is then as the windshied part 14b of barrier air.In the embodiment shown in fig. 4, side is provided with electric elements before and after the electrical box inside, the tabular air dam 14a of the first wind-guiding member 14 is between the electric elements of both sides at this moment, tabular air dam 14a left side is the electric elements on the frequency conversion mainboard, these element heating amounts are big, and the right side is common electric elements, and this part electric elements caloric value is very little, therefore most of air-flow need be introduced the zone at the element place of left part.Therefore, the air-flow that enters electrical box inside is divided into two parts at tabular air dam 14a place, and the electric elements of the both sides of flowing through respectively, the air-flow in left side is walked around the first wind-guiding member 14 and is flowed out, the air-flow quilt of inflow right side area then windshied part 14b stops that because right side electric elements caloric value is little, and the right side element is little to the resistance of air-flow, therefore windshied part 14b is set can not influence the interior radiating effect of electrical box, also helps air-flow is guided to the big caloric value electric elements place in left side simultaneously.In another embodiment, as shown in Figure 5, electrical box has only a side to be provided with electric elements, then this moment the first wind-guiding member 14 tabular air dam 14a be positioned at a side of electric elements, and the air intake opening 13a of the contiguous electrical box cover plate 13 of windshied part 14b, the air-flow that enters electrical box inside is by the windshied part 14b electric elements zone of directly leading, and then the electric elements of flowing through under the guide effect of tabular air dam 14a, and then flows out electrical box.
Shown in Fig. 4,5, the first wind-guiding member 14 firmly is installed on the mounting bar 15a of electrical box body 15 sides, can adopt screw connection, welding or mode such as bonding.In Fig. 4, tabular air dam 14a right side is provided with electric elements, these electric elements are isolated from originally be installed in the low electric elements of a part of heat dissipation capacity on the frequency conversion mainboard, and these isolated electric elements are directly installed on the tabular air dam 14a, and are electrically connected with the frequency conversion mainboard.
Further, according to the utility model, in order further to improve the radiating effect of air channel type heat elimination structure, can further optimize its structure, corresponding ventilation unit is set being used to install on the structural member of electrical box body 15, and correspondingly between mounting structure spare and electrical box body 15, wind guide component is set, thus form the guiding channel of an air-flow at this, so that outer gas stream is concentrated importing electrical box body 15 inside.Shown in Fig. 3,4, the radiator structure of electrical box of the present utility model also comprises: installation component 11, and electrical box body 15 is installed on its inboard, is formed with air inlet 11a on this installation component 11; The second wind-guiding member 12, it is arranged between electrical box cover plate 13 and the installation component 15, and first side of the second wind-guiding member 12 communicates with the air intake opening 13a of electrical box cover plate 13 bottoms, and second side communicates with the air inlet 11a of installation component 11.As shown in Figure 3, the second wind-guiding member 12 of the present utility model is the member of case shape.By above-mentioned additional structure, outside cold air can be inhaled into by the air inlet 11a on the installation component 11, and then by the guide function of the second wind-guiding member 12 concentrated area goes out to enter in the electrical box body 15 at the air intake opening 13a of electrical box cover plate 13, thereby further optimized the radiating effect of air channel type heat elimination structure.
Preferably, as shown in Figure 3, increase gradually from its first side direction, second side according to the second wind-guiding member 12 of electrical box radiator structure of the present utility model, this design makes air-flow converge in the air intake opening 13a place of electrical box cover plate 13 in the concentrated area more.
Further, shown in Fig. 3,4, in cooling mechanism of the present utility model, has air-guiding aisle 16 between the side of the end face of electrical box body 13 and installation component 11, converge by the thermal current of this air-guiding aisle 16 from the air-out opening 13b effluent air of electrical box cover plate 13 with other, and then by the unit blower fan sucking-off of top.In addition, the air-out opening 13b effluent air from electrical box cover plate 13 also can directly be discharged into the unit outside.
Further, in electrical box radiator structure of the present utility model, the upper edge of the air intake opening 13a at electrical box cover plate 13 bottoms and top and air-out opening 13b is respectively arranged with downward-sloping baffle plate 13c, 13d, and these baffle plates 13c, 13d are positioned at the outside of electrical box cover plate 13.The purpose that above-mentioned baffle plate 13c, 13d are set is further to improve dustproof, waterproof effect, so that satisfy the instructions for use of air-conditioning unit under the bad working environments condition.
In the present embodiment, the integral level height of the air inlet 11a of installation component 11 is positioned at the below of the air intake opening 13a of electrical box cover plate 13 bottoms, and this is the design of carrying out along with the air draught direction (from top to bottom) of the unit blower fan in the present embodiment.At this moment, in order further to improve the result of ventilating heat dissipation in air channel, the lower edge of the air inlet 11a of installation component 11 is provided with acclivitous air dam 11b, and this air dam 11b is positioned at the inboard of installation component 11.When air-flow entered by the air inlet 11a of installation component 11 from the outside, this air dam 11b towards the air intake opening 13a of top guiding, entered in the electrical box body 15 air-flow in air-flow smoothly.
Below, in conjunction with Fig. 4, the working method of the electrical box radiator structure in the shown preferred embodiment is described.At first, unit blower fan 17 has formed the negative pressuren zone of unit inside and the zone of positive pressure of unit outside in operation process.The outside air of low temperature relatively of unit enters into the second wind-guiding member 12 from the A district by the air inlet 11a on the installation component 11, enter the C district of electrical box body 15 inside by the air intake opening 13a of electrical box cover plate 13 bottoms via the guiding of the second wind-guiding member 12, the heating electric elements that air-flow is flowed through main under the guiding of the first wind-guiding member 14, thereby to its heat radiation, hot-air behind the absorption heat arrives the D district, and then by the air-out opening 13b outflow arrival installation component 11 at electrical box cover plate 13 tops and the E district between the electrical box cover plate 13, and enter into the F district of unit inside by the wind-guiding road of design herein, thermal current is in F district and other relatively hot air mixed, and then by the blower fan suction to the unit outside, thereby realized the high efficiency and heat radiation in the electrical box.
Electrical box radiator structure of the present utility model not only can temperature with high efficiency, waterproof and dustproof and protection against the tide, and the production efficiency height, and is convenient and practical.In similarly the frequency conversion electrical box designs, can use this structure to solve problem according to actual conditions, have wide range of applications.
In addition, the ventilation unit that need to prove the electrical box that adopts radiator structure of the present utility model and comprised this electrical box is also in protection range of the present utility model.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (11)
1. an electrical box radiator structure is characterized in that, comprising:
Electrical box cover plate (13), from sidepiece sealing electrical box body (15), one in the bottom of described electrical box cover plate and the top is formed with the air intake opening (13a) that communicates with external environment condition, and another is formed with air-out opening (13b);
The first wind-guiding member (14), be arranged on described electrical box body interior, between described electrical box cover plate and the intrinsic electric elements of described electrical box, the described first wind-guiding member has the tabular air dam (14a) relative with the electric elements of described electrical box body interior.
2. electrical box radiator structure according to claim 1 is characterized in that, the described first wind-guiding member is the member with L shaped cross section.
3. electrical box radiator structure according to claim 1 is characterized in that, the integral level height of the tabular air dam (14a) of the described first wind-guiding member is positioned on the air intake opening of described electrical box cover plate.
4. electrical box radiator structure according to claim 1 is characterized in that, also comprises:
Installation component (11), electrical box body (15) is installed on its inboard, is formed with air inlet (11a) on the described installation component;
The second wind-guiding member (12), be arranged between described electrical box cover plate and the described installation component, and first side of the described second wind-guiding member communicates with the air intake opening (13a) of described electrical box cover plate bottom, and second side communicates with the air inlet (11a) of described installation component.
5. electrical box radiator structure according to claim 4 is characterized in that, has air-guiding aisle (16) between the end face of described electrical box body and the side of described installation component.
6. electrical box radiator structure according to claim 4 is characterized in that, the member of the described second wind-guiding member for increasing gradually from first side direction, second side.
7. electrical box radiator structure according to claim 1, it is characterized in that, the air intake opening (13a) of described electrical box cover plate and the upper edge of air-out opening (13b) are provided with downward-sloping baffle plate (13c, 13d), and described baffle plate is positioned at the described electrical box cover plate outside.
8. electrical box radiator structure according to claim 4 is characterized in that, the integral level height of the air inlet of described installation component (11a) is positioned under the air intake opening (13a) of described electrical box cover plate bottom.
9. electrical box radiator structure according to claim 8 is characterized in that, the lower edge of the air inlet of described installation component (11a) is provided with acclivitous air dam (11b), and described air dam is positioned at the inboard of described installation component.
10. an electrical box is characterized in that, comprises according to each described electrical box radiator structure among the claim 1-9.
11. a ventilation unit is characterized in that, comprises electrical box according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201143550U CN201590988U (en) | 2010-02-03 | 2010-02-03 | Electric box heat radiation structure, electric box and ventilation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201143550U CN201590988U (en) | 2010-02-03 | 2010-02-03 | Electric box heat radiation structure, electric box and ventilation unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590988U true CN201590988U (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201143550U Expired - Lifetime CN201590988U (en) | 2010-02-03 | 2010-02-03 | Electric box heat radiation structure, electric box and ventilation unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590988U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102665380A (en) * | 2012-04-09 | 2012-09-12 | 美的集团有限公司 | Gas-liquid separation type heat dissipation air duct structure of electric control box of outdoor unit of air conditioner |
| CN103249279A (en) * | 2012-02-10 | 2013-08-14 | 珠海格力电器股份有限公司 | Electric box assembly and multi-connected air conditioning unit using same |
| CN112654207A (en) * | 2020-11-06 | 2021-04-13 | 广州菲亚兰德科技有限公司 | Electric box with heat dissipation air duct and electric equipment |
| CN114828507A (en) * | 2022-03-22 | 2022-07-29 | 国网山东省电力公司惠民县供电公司 | Novel power system communication management device |
-
2010
- 2010-02-03 CN CN2010201143550U patent/CN201590988U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103249279A (en) * | 2012-02-10 | 2013-08-14 | 珠海格力电器股份有限公司 | Electric box assembly and multi-connected air conditioning unit using same |
| CN103249279B (en) * | 2012-02-10 | 2015-12-16 | 珠海格力电器股份有限公司 | Electric box assembly and multi-connected air conditioning unit using same |
| CN102665380A (en) * | 2012-04-09 | 2012-09-12 | 美的集团有限公司 | Gas-liquid separation type heat dissipation air duct structure of electric control box of outdoor unit of air conditioner |
| CN112654207A (en) * | 2020-11-06 | 2021-04-13 | 广州菲亚兰德科技有限公司 | Electric box with heat dissipation air duct and electric equipment |
| CN114828507A (en) * | 2022-03-22 | 2022-07-29 | 国网山东省电力公司惠民县供电公司 | Novel power system communication management device |
| CN114828507B (en) * | 2022-03-22 | 2023-07-25 | 国网山东省电力公司惠民县供电公司 | Novel power system communication management device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |