CN207368449U - A kind of ventilation and heat switchgear - Google Patents
A kind of ventilation and heat switchgear Download PDFInfo
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- CN207368449U CN207368449U CN201721286467.2U CN201721286467U CN207368449U CN 207368449 U CN207368449 U CN 207368449U CN 201721286467 U CN201721286467 U CN 201721286467U CN 207368449 U CN207368449 U CN 207368449U
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- cabinet
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- exhaust fan
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Abstract
The application provides a kind of ventilation and heat switchgear, including cabinet, cabinet includes outer cabinet and the interior cabinet being arranged on inside outer cabinet, and gap is equipped between outer cabinet and interior cabinet, interior cabinet is sealed set, the bottom of outer cabinet is equipped with base, and the top of base is equipped with support plate, cavity is surrounded between support plate and base, cavity inside is equipped with cold air chamber and pressure fan, the input terminal of pressure fan is connected by gas outlet with cold air chamber, and the bottom of interior cabinet is equipped with ventilation hole, and the output terminal of pressure fan is connected by ventilation hole with interior cabinet inner cavity；The top of interior cabinet is equipped with vent, and the lateral wall of outer cabinet is equipped with exhaust fan, and exhaust fan is connected by vent with interior cabinet inner cavity, and the output terminal of exhaust fan is arranged on the outside of cabinet；Cabinet is sealed set in the utility model, by setting pressure fan in interior bottom of cabinet portion, pressure fan can be delivered to through cold air in interior cabinet cabinet, and interior cabinet top portion connects exhaust fan, the hot-air of interior cabinet cabinet internal upper part can be evacuated to outside cabinet, the temperature of interior cabinet cabinet can be effectively reduced.
Description
Technical field
This application involves switchgear technical field, more particularly to a kind of ventilation and heat switchgear.
Background technology
Switchgear is a kind of electrical equipment, and switchgear outside line is introduced into master switch in cabinet, is switched subsequently into sub-control, respectively
Branch is needed to set by it.Under normal operating conditions, the equipment electrical current in switchgear is larger, is leading to larger electricity for a long time
Substantial amounts of heat can be produced during stream, switchgear uses in hot environment, greatly reduces the service life of switchgear, switchgear
Heat dissipation performance it is poor, be easy to cause aging circuit；Due to the leakproofness of switchgear, in the heavier place of some loads, exist out
Close cabinet temperature it is excessive the problem of, the temperature exceeding standard of switchgear, directly affects the safe and stable operation of equipment, and heat production is
The process of continuous development, if be not controlled by, degree of superheat can constantly aggravate, and seriously affect the service life of switchgear.
Switchgear of the prior art is equipped with the ventilation hole for divulging information, and since the aperture of ventilation hole is larger, easily will
Impurity in air is brought into cabinet, is not easy to clear up, and seriously affects the use of electric elements in cabinet.
Utility model content
This application provides a kind of ventilation and heat switchgear, and to solve in the prior art, inside switch cabinet temperature is high, is not easy
The how reluctant problem of dust in heat dissipation and cabinet.
The utility model embodiment provides a kind of ventilation and heat switchgear, including cabinet；
The cabinet includes outer cabinet and the interior cabinet being arranged on inside outer cabinet, and gap, institute are equipped between the outer cabinet and interior cabinet
It is sealed set to state interior cabinet, and the bottom of the outer cabinet is equipped with base, and the top of the base is equipped with support plate, the support plate with
Cavity is surrounded between the base, the cavity inside is equipped with cold air chamber and pressure fan, refrigeration machine, institute are equipped with the cold air chamber
The side for stating cold air chamber is equipped with gas outlet, and the input terminal of the pressure fan is connected by the gas outlet with the cold air chamber, institute
The bottom for stating interior cabinet is equipped with ventilation hole, and the output terminal of the pressure fan is connected by the ventilation hole with the interior cabinet inner cavity；
The top of the interior cabinet is equipped with vent, and the lateral wall of the outer cabinet is equipped with exhaust fan, the exhaust fan it is defeated
Enter end to connect with the interior cabinet inner cavity by the vent, the output terminal of the exhaust fan is arranged on the outside of the cabinet；
The side of the outer cabinet is equipped with air inlet hole, and the baffle for controlling the air inlet hole opening and closing, institute are equipped with the air inlet hole
State in cavity and be equipped with motor, the motor is connected by transmission device with the baffle, and can control the shifting of the baffle
Move to control the opening and closing of the air inlet hole；The lateral wall of the interior cabinet is equipped with fan close to the side of the air inlet hole；
The lateral wall of the interior cabinet is equipped with the first temperature sensor, and the outer cabinet inside is close to the side of the air inlet hole
Equipped with the first filter screen, one end of first filter screen is connected with the top of the outer cabinet, the other end and the support plate phase
Even, the second filter screen is equipped with the air inlet hole, the mesh of second filter screen is more than the mesh of first filter screen；
The lateral wall of the outer cabinet is equipped with second temperature sensor, further includes controller, the fan, the first temperature sensing
Device, second temperature sensor, motor, pressure fan, exhaust fan, refrigeration machine are electrically connected with the controller, in the controller
Receiving module is transmitted equipped with wireless signal.
Optionally, slide being equipped with the air inlet hole on the outer cabinet side wall, the baffle is slidably connected with the slide,
The motor is equipped with turntable, and the turntable is arranged in the shaft of the motor, and the turntable is equipped with connecting rod, the connecting rod
One end be hinged with the turntable, the other end and the panel hinge.
Optionally, the bottom of the interior cabinet is equipped with shockproof support base, and the quantity of the shockproof support base is four, is distributed on
The bottom of the interior cabinet, the shockproof support base are arranged in the support plate.
Optionally, the outside of the exhaust fan is equipped with protective cover, and the exhaust fan is arranged in the protective cover.
Optionally, the top of the cabinet is equipped with triangle waterproof cabinet lid.
Optionally, the storage battery being used for for refrigeration machine power supply is equipped with the cold air chamber.
Optionally, the outer bottom of cabinet portion is equipped with universal wheel, and the universal wheel is equipped with arrestment mechanism.
The prior art is contrasted, the beneficial effects of the utility model are：
1st, cabinet includes outer cabinet and interior cabinet in the utility model, and interior cabinet is arranged on inside outer cabinet, is set between interior cabinet and outer cabinet
There is gap, the bottom of outer cabinet is equipped with cavity, cold air chamber and pressure fan are equipped with cavity, refrigeration machine, cold air chamber are equipped with cold air chamber
Side be equipped with gas outlet, the input terminal of pressure fan is connected by gas outlet with cold air chamber, and the bottom of interior cabinet is equipped with ventilation hole, send
The output terminal of wind turbine is connected by ventilation hole with interior cabinet inner cavity, and the indoor gas of cold air can be delivered to interior cabinet cabinet by pressure fan
It is interior, the temperature in interior cabinet can be reduced；The top of interior cabinet is equipped with vent, and the lateral wall of outer cabinet is equipped with exhaust fan, exhaust fan
Input terminal connected by vent with interior cabinet inner cavity, the output terminal of exhaust fan is arranged on the outside of cabinet, due to the heat in interior cabinet
Air is on the top of cold air, by setting exhaust fan in interior cabinet upper portion side wall, can take out the hot-air in interior cabinet cabinet
Go out to outside cabinet, can further reduce the temperature in interior cabinet.
2nd, the side of the utility model China and foreign countries cabinet is equipped with air inlet hole, and the baffle of control air inlet hole opening and closing is equipped with air inlet hole,
Motor is equipped with cavity, motor is connected by transmission device with baffle, and is capable of the movement of control baffle to control air inlet hole
Opening and closing, the lateral wall of interior cabinet is equipped with the first temperature sensor, and the lateral wall of outer cabinet is equipped with second temperature sensor, also wraps
Controller is included, temperature sensor, motor, pressure fan, exhaust fan are electrically connected with the controller, when second temperature sensor is examined
When the temperature value of survey is less than preset temperature value, it was demonstrated that the temperature outside cabinet is relatively low, the motor work of controller control at this time, motor control
Air inlet hole is opened in baffle movement, while controls fan to rotate, and the cold air outside cabinet can enter outer cabinet and interior cabinet from air inlet hole
Between gap in, the temperature in gap between outer cabinet and interior cabinet can be reduced；When the temperature value of second temperature sensor detection is high
When default temperature value, it was demonstrated that the temperature outside cabinet is higher, and the motor work of controller control at this time, the movement of motor control baffle will
Inlet air bore closure, prevents hot wind from entering in cabinet.
3rd, the side inside the utility model China and foreign countries cabinet close to air inlet hole is equipped with the first filter screen, one end of the first filter screen
It is connected with the top of outer cabinet, the other end is connected with support plate, and the second filter screen is equipped with air inlet hole, and the mesh of the second filter screen is big
In the mesh of the first filter screen, the first filter screen can by outside larger contaminant filter to the cabinet in air, the second filter screen
Setting can the further impurity crossed in air filtering.
4th, slide is equipped with the enterprising air holes of the utility model China and foreign countries cabinet side wall, baffle is slidably connected with slide, is set on motor
There is turntable, turntable is arranged in the shaft of motor, and turntable is equipped with connecting rod, and one end and the turntable of connecting rod are hinged, the other end and gear
Plate is hinged, and during practical operation, the shaft of motor, which rotates, drives turntable to rotate, and turntable drives baffle to be moved along slide by connecting rod,
It can easily realize the opening and closing of air inlet hole, it is simple in structure, it is easy to operation.
Brief description of the drawings
To be illustrated more clearly that background technology or the technical solution of the utility model, below to the prior art or specific implementation
The attached drawing being used in combination in mode is briefly described；It should be evident that the attached drawing below in conjunction with embodiment is only to use
In conveniently understanding the utility model embodiment, for those of ordinary skill in the art, before not making the creative labor
Put, other attached drawings can also be obtained according to these attached drawings；
Fig. 1 is the overall structure diagram for the switchgear that the utility model embodiment provides；
Fig. 2 is the drive mechanism schematic diagram of baffle；
Wherein：The outer cabinets of 1-, cabinet in 2-, 3- bases, 4- support plates, 5- cavitys, 6- cold air chambers, 7- pressure fan, 8- refrigeration machines,
9- gas outlets, 10- ventilation holes, 11- vents, 12- exhaust fans, 13- air inlet holes, 14- baffles, 15- slides, 16- motors, 17-
Turntable, 18- connecting rods, the first temperature sensors of 19-, the first filter screens of 20-, the second filter screens of 21-, 22- shafts, the shockproof branch of 23-
Support seat, 24- protective covers, 25- waterproof cabinet lids, 26- storage batteries, 27- universal wheels, 28- fans, 29- second temperature sensors.
Embodiment
In order to make those skilled in the art more fully understand the technical solution in the utility model, below in conjunction with this reality
With the attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, should all belong to the scope of the utility model protection.
The ventilation and heat switchgear that the utility model embodiment provides, including cabinet, sets at the top of cabinet in the present embodiment
There is triangle waterproof cabinet lid 25, can effectively play waterproof action.
Fig. 1 is the overall structure diagram for the switchgear that the utility model embodiment provides.As shown in Figure 1, cabinet includes
Outer cabinet 1 and the interior cabinet 2 being arranged on outer cabinet 1 inside, breaker, disconnecting switch, on-load switch, operating mechanism, mutual inductor and respectively
The devices such as kind protective device are placed in interior cabinet 2, are equipped with gap between outer cabinet 1 and interior cabinet 2, air can flow in gap.
Interior cabinet 2 is sealed set, can prevent dust from entering in interior 2 cabinet of cabinet, and the bottom of outer cabinet 1 is equipped with base 3, base 3 it is upper
Portion is equipped with support plate 4, and cavity 5 is surrounded between support plate 4 and base 3, and cavity 5 is internally provided with cold air chamber 6 and pressure fan 7, cold air
Refrigeration machine 8 is equipped with room 6, the storage battery 26 for being used for powering for refrigeration machine 8 is equipped with cold air chamber 6.The side of cold air chamber 6 is equipped with out
Gas port 9, the input terminal of pressure fan 7 are connected by gas outlet 9 with cold air chamber 6, and the bottom of interior cabinet 2 is equipped with ventilation hole 10, pressure fan 7
Output terminal connected by ventilation hole 10 with interior 2 inner cavity of cabinet.
In actual use, the gas in cold air chamber 6 can be delivered in interior 2 cabinet of cabinet by pressure fan 7, can be reduced
Temperature in interior 2 cabinet of cabinet.
The top of interior cabinet 2 is equipped with vent 11, and the lateral wall of outer cabinet 1 is equipped with exhaust fan 12, the input terminal of exhaust fan 12
Connected by vent 11 with interior 2 inner cavity of cabinet, the output terminal of exhaust fan 12 is arranged on the outside of cabinet.
The side of outer cabinet 1 is equipped with air inlet hole 13, and the baffle 14 that control air inlet hole 13 is opened and closed, cavity 5 are equipped with air inlet hole 13
Interior to be equipped with motor 16, motor 16 is connected by transmission device with baffle 14, and be capable of the movement of control baffle 14 come control into
The opening and closing of air holes 13；The lateral wall of interior cabinet 2 is equipped with fan 28 close to the side of air inlet hole 13.
The lateral wall of interior cabinet 2 is equipped with the first temperature sensor 19, and the outer inside of cabinet 1 is equipped with the close to the side of air inlet hole 13
One filter screen 20, one end of the first filter screen 20 are connected with the top of outer cabinet 1, and the other end is connected with support plate 4, at air inlet hole 13
Equipped with the second filter screen 21, the mesh of the second filter screen 21 is more than the mesh of the first filter screen 20.
The lateral wall of outer cabinet 1 is equipped with second temperature sensor 29, further includes controller, fan 28, the first temperature sensor
19th, second temperature sensor 29, motor 16, pressure fan 7, exhaust fan 12, refrigeration machine 8 are electrically connected with the controller, in controller
Receiving module is transmitted equipped with wireless signal.
When the temperature value that second temperature sensor 29 detects is less than preset temperature value, it was demonstrated that the temperature outside cabinet is relatively low, this
When controller receive control motor 16 after the signal that second temperature sensor 29 is sent and work, 16 control baffle 14 of motor moves
Air inlet hole 13 is opened, while controls fan 28 to rotate, can speed up the air circulation of hole between interior cabinet 2 and outer cabinet 1, can
Reduce the temperature in gap between outer cabinet 1 and interior cabinet 2；When the temperature value that second temperature sensor 29 detects is higher than preset temperature value
When, it was demonstrated that the temperature height outside cabinet, at this time controller control motor after receiving the signal that second temperature sensor 29 is sent
16 work, 16 control baffle 14 of motor, which moves, closes air inlet hole 13, prevents hot wind from entering in cabinet.
Slide 15 is equipped with the outer enterprising air holes 13 of 1 side wall of cabinet, baffle 14 is slidably connected with slide 15, and motor 16, which is equipped with, to be turned
Disk 17, turntable 17 are arranged in the shaft 22 of motor 16, and turntable 17 is equipped with connecting rod 18, and one end and the turntable 17 of connecting rod 18 are cut with scissors
Connect, the other end is hinged with baffle 14.In other embodiments, slide 15 can be arranged on outer 1 madial wall of cabinet close to air inlet hole
At 13, at this time, baffle 14, connecting rod 18, turntable 17 are arranged inside the cabinet of outer cabinet 1.
During practical operation, the shaft 22 of motor 16, which rotates, drives turntable 17 to rotate, and turntable 17 drives baffle by connecting rod 18
14 move along slide 15, can easily realize the opening and closing of air inlet hole 13, simple in structure, easy to operation.
The bottom of interior cabinet 2 is equipped with shockproof support base 23, and the quantity of shockproof support base 23 is four, is distributed on the bottom of interior cabinet 2
Portion, shockproof support base 23 are arranged in support plate 4, and the setting of shockproof support base 23 is played the role of cabinet 2 in placement and toppled over, together
When, can form gap between 1 bottom of interior 2 bottom of cabinet and outer cabinet, easy to air circulation due to setting shockproof support base 23.
The outside of exhaust fan 12 is equipped with protective cover 24, and exhaust fan 12 is arranged in protective cover 24, can play protection exhausting
The effect of machine 12.In the present embodiment, protective cover 24 is equipped with switch gate, easy to the maintenance and maintenance to exhaust fan 12.
The storage battery 26 for being used for powering for refrigeration machine 8 is equipped with cold air chamber 6.
Outer 1 bottom of cabinet is equipped with universal wheel 27, and universal wheel 27 is equipped with arrestment mechanism, the setting of universal wheel 27, easy to switch
The movement of cabinet.
The ventilation and heat switchgear in the utility model embodiment is described in detail above.This part is using specific
Embodiment is set forth the principle and embodiment of the utility model, and the explanation of above example is only intended to help to understand
The core concept of the utility model, in the case where not departing from the utility model principle, those of ordinary skill in the art are not having
All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.
Claims (7)
1. a kind of ventilation and heat switchgear, including cabinet, it is characterised in that：
The cabinet includes outer cabinet (1) and is arranged on the internal interior cabinet (2) of outer cabinet (1), between the outer cabinet (1) and interior cabinet (2)
Equipped with gap, the interior cabinet (2) is sealed set, and the bottom of the outer cabinet (1) is equipped with base (3), the top of the base (3)
Equipped with support plate (4), cavity (5) is surrounded between the support plate (4) and the base (3), the cavity (5) is internally provided with cold
Gas chamber (6) and pressure fan (7), the cold air chamber (6) is interior to be equipped with refrigeration machine (8), and the side of the cold air chamber (6) is equipped with gas outlet
(9), the input terminal of the pressure fan (7) is connected by the gas outlet (9) with the cold air chamber (6), the bottom of the interior cabinet (2)
Portion is equipped with ventilation hole (10), and the output terminal of the pressure fan (7) is connected by the ventilation hole (10) and interior cabinet (2) inner cavity
It is logical；
The top of the interior cabinet (2) is equipped with vent (11), and the lateral wall of the outer cabinet (1) is equipped with exhaust fan (12), described
The input terminal of exhaust fan (12) is connected by the vent (11) with interior cabinet (2) inner cavity, the exhaust fan (12) it is defeated
Outlet is arranged on the outside of the cabinet；
The side of the outer cabinet (1) is equipped with air inlet hole (13), and air inlet hole (13) place, which is equipped with, controls the air inlet hole (13) to open
The baffle (14) closed, the cavity (5) is interior to be equipped with motor (16), and the motor is connected by transmission device with the baffle, and
And the movement of the baffle (14) can be controlled to control the air inlet hole (13) to be opened and closed；
The lateral wall of the interior cabinet (2) is equipped with temperature sensor (19), and the outer cabinet (1) is internal close to the air inlet hole (13)
Side be equipped with the first filter screen (20), one end of first filter screen (20) is connected with the top of the outer cabinet (1), another
End is connected with the support plate (4), and air inlet hole (13) place is equipped with the second filter screen (21), second filter screen (21)
Mesh is more than the mesh of first filter screen (20)；
Further include controller, the temperature sensor (19), motor (16), pressure fan (7), exhaust fan (12) with the control
Device is electrically connected, and wireless signal transmission receiving module is equipped with the controller.
2. ventilation and heat switchgear according to claim 1, it is characterised in that：
Air inlet hole (13) place is equipped with slide (15), the baffle (14) and the slide (15) on outer cabinet (1) side wall
It is slidably connected, the motor (16) is equipped with turntable (17), and the turntable (17) is arranged on the shaft (22) of the motor (16)
On, the turntable (17) is equipped with connecting rod (18), and one end of the connecting rod (18) and the turntable (17) are hinged, the other end and institute
It is hinged to state baffle (14).
3. ventilation and heat switchgear according to claim 2, it is characterised in that：
The bottom of the interior cabinet (2) is equipped with shockproof support base (23), and the quantity of the shockproof support base (23) is four, is distributed on
The bottom of the interior cabinet (2), the shockproof support base (23) are arranged in the support plate (4).
4. ventilation and heat switchgear according to claim 3, it is characterised in that：
The outside of the exhaust fan (12) is equipped with protective cover (24), and the exhaust fan (12) is arranged in the protective cover (24).
5. ventilation and heat switchgear according to claim 4, it is characterised in that：
The top of the cabinet is equipped with triangle waterproof cabinet lid (25).
6. ventilation and heat switchgear according to claim 5, it is characterised in that：
The storage battery (26) being used for for refrigeration machine power supply is equipped with the cold air chamber (6).
7. ventilation and heat switchgear according to claim 6, it is characterised in that：
Outer cabinet (1) bottom is equipped with universal wheel (27), and the universal wheel (27) is equipped with arrestment mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721286467.2U CN207368449U (en) | 2017-09-30 | 2017-09-30 | A kind of ventilation and heat switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721286467.2U CN207368449U (en) | 2017-09-30 | 2017-09-30 | A kind of ventilation and heat switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207368449U true CN207368449U (en) | 2018-05-15 |
Family
ID=62346582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721286467.2U Active CN207368449U (en) | 2017-09-30 | 2017-09-30 | A kind of ventilation and heat switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207368449U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390863A (en) * | 2018-11-01 | 2019-02-26 | 温州电力设计有限公司 | A kind of umbilical air-conditioning ventilation system |
| CN110350425A (en) * | 2019-08-13 | 2019-10-18 | 广东精益电力设备有限公司 | A kind of intelligent distribution box of controllable temperature and humidity |
| CN112117687A (en) * | 2020-09-15 | 2020-12-22 | 顾瑞升 | Box-type substation with emergency early warning lifting device and use method thereof |
| CN112366534A (en) * | 2020-11-30 | 2021-02-12 | 陕西科技大学 | Moisture-proof device of hydropower station |
| CN114389155A (en) * | 2020-10-16 | 2022-04-22 | 四川广安爱众股份有限公司 | Electrical cabinet and anti-condensation control method thereof |
| CN114885544A (en) * | 2022-05-10 | 2022-08-09 | 邹艳 | Stable mobile communication device and communication method |
-
2017
- 2017-09-30 CN CN201721286467.2U patent/CN207368449U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390863A (en) * | 2018-11-01 | 2019-02-26 | 温州电力设计有限公司 | A kind of umbilical air-conditioning ventilation system |
| CN110350425A (en) * | 2019-08-13 | 2019-10-18 | 广东精益电力设备有限公司 | A kind of intelligent distribution box of controllable temperature and humidity |
| CN112117687A (en) * | 2020-09-15 | 2020-12-22 | 顾瑞升 | Box-type substation with emergency early warning lifting device and use method thereof |
| CN114389155A (en) * | 2020-10-16 | 2022-04-22 | 四川广安爱众股份有限公司 | Electrical cabinet and anti-condensation control method thereof |
| CN112366534A (en) * | 2020-11-30 | 2021-02-12 | 陕西科技大学 | Moisture-proof device of hydropower station |
| CN114885544A (en) * | 2022-05-10 | 2022-08-09 | 邹艳 | Stable mobile communication device and communication method |
| CN114885544B (en) * | 2022-05-10 | 2024-03-29 | 邹艳 | Stable mobile communication device and communication method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210726 Address after: 257506 No.98 Yongxin Road, Shengtuo Town, Kenli District, Dongying City, Shandong Province Patentee after: Shandong Xingchen Holding Co.,Ltd. Patentee after: SHANDONG DONGCHEN ENERGY-SAVING POWER EQUIPMENT Co.,Ltd. Address before: 257506 Fuxi, Shengtuo Town, Kenli County, Dongying City, Shandong Province (No. 98, Yongxin Road) Patentee before: CHINA EASTAR HOLDINGS GROUP Co.,Ltd. Patentee before: SHANDONG DONGCHEN ENERGY-SAVING POWER EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |