CN201209952Y - Overtemperature protective structure for multi-fan heater - Google Patents
Overtemperature protective structure for multi-fan heater Download PDFInfo
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- CN201209952Y CN201209952Y CNU2008200947478U CN200820094747U CN201209952Y CN 201209952 Y CN201209952 Y CN 201209952Y CN U2008200947478 U CNU2008200947478 U CN U2008200947478U CN 200820094747 U CN200820094747 U CN 200820094747U CN 201209952 Y CN201209952 Y CN 201209952Y
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- air channel
- temperature controller
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Abstract
A overheat protection structure of multiple fans heater comprises a shell; two or more fans, disposed in shell; electric heating elements, disposed at every wind outlet of the fan; an electrical control member and a temperature controller; a wind duct is additionally disposed in the shell and is provided with through-holes around electric heating elements of the fan; the temperature controller is fixed at upper of wind duct. Any one fan fails and stop, the temperature rises for the electric heating element positioned at front part of the fan, temperature rise and exceeds the set value for the air entering into wind duct from through-hole, then temperature controller cuts off power supply of electric heating element. The overheat protection structure can solve technical problem of safety and protection of multiple-fan air warming device, and guarantee that temperature controller can effectively cuts off power supply of electric heating element and avoids safety accident when any fan stops because of failure.
Description
[technical field]
The utility model relates to the overheat protection structure of household electrical appliance such as heater, relates in particular to the overtemperature safeguard structure that has many typhoons machine in the heater.
[background technology]
During heater work, be to rely on heating to heat room air.And the operating temperature of the constitutional detail of heater, electrical equipment all has certain limit, surpasses this limit, the danger of breaking-up equipment and initiation fire will take place, so all heaters all must have reliable protected by temperature limitation measure.The overtemperature fault of prior art heater nearly all occurs under the situation of the unusual stall of blower fan.The prior art heater all is single blower fan, during the blower fan stall, the highest point of temperature rise is determined in the heater, usually, determine that at this place of maximum temperaturerise point is provided with a temperature controller, temperature controller action when heating up unusually in the heater, the power supply circuits of disconnection heating, make it to quit work, just can avoid the generation of security incident.
Not long ago the someone proposed to use two technical schemes with the multi fan heater of fan, and its superiority is to realize slimming, reduced volume greatly, reduced cost.But how the variation difference in temperature field selects the set-point of temperature controller to become technical barrier in the heater that different fan troubles produce in many typhoons machine, if this difficult problem can't resolve, will there be potential safety hazard in this novel multi fan heater.
[utility model content]
The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and the overtemperature safeguard structure that proposes a kind of multi fan heater; Use this overtemperature safeguard structure; just can solve the technical barrier of security protection aspect with many typhoons machine heater; guarantee that any typhoon machine hinders for some reason that temperature controller can both cut off the power supply of heating effectively when shutting down, make it to quit work, avoid the generation of security incident.
The technical scheme that the utility model solve the technical problem employing is:
A kind of overtemperature safeguard structure of multi fan heater is proposed, this heater comprises housing, is arranged on the blower fan more than two or two in the described housing and is arranged on the respectively heating at this fan outlet place, and electric-controlled parts and the temperature controller that is provided with temperature-sensing element; The air channel is set in this housing in addition again, and described air channel has through hole respectively at the close respectively described heating place of this blower fan; The temperature-sensing element of described temperature controller is fixed on the top in the described air channel, uppermost first through hole top.The top in this air channel has air outlet, and the bottom in this air channel also is provided with air inlet.Described housing comprises fore shell and back cover, is respectively equipped with gusset in described fore shell and the back cover; After described fore shell and back cover are buckled into a casing, fasten mutually by the gusset separately on described fore shell and the back cover and to surround this air channel, and have through hole in its corresponding respectively place of this blower fan place heating.Perhaps, this air channel surrounds by the sheet material on bending edge edge, and this sheet material is flute profile with cover, and is provided with through hole respectively at the described heating place of its corresponding respectively this blower fan.If wherein any one blower fan breaks down and shuts down, then heating is positioned at the temperature rising at its position, front, enter the air themperature in air channel also along with rising near the through hole the heating, surpass its secure setting, this variations in temperature is passed to temperature controller by air, temperature controller will cut off the power supply of heating, makes it to quit work; This moment powered-down, wait fix a breakdown after, connect power supply, heating is in normal working temperature under the cooling of the cold wind that blower fan blows out, this multi fan heater can formally be started working again.
Compare with prior art; the beneficial effects of the utility model are: because the air channel is set in the heater with many typhoons machine in addition again; this air channel can form one can determine the highest point of temperature rise in this heater; so only this determines that the place of maximum temperaturerise point is provided with a temperature controller to need in the air channel; just can solve the technical barrier of safeguard protection aspect with many typhoons machine heater; guarantee that any typhoon machine hinders for some reason that temperature controller can both cut off the power supply of heating effectively when shutting down; make it to quit work, avoid the generation of security incident.
[description of drawings]
Fig. 1 is the main cutaway view of looking of orthographic projection of the overtemperature safeguard structure embodiment one of the utility model multi fan heater;
Fig. 2 is the main cutaway view of looking of the orthographic projection of described overtemperature safeguard structure embodiment two;
Fig. 3 is the main cutaway view of looking of the orthographic projection of described overtemperature safeguard structure embodiment three;
Fig. 4 is the structure for amplifying schematic diagram of temperature controller among Fig. 1 or Fig. 2;
Fig. 5 is the structure for amplifying schematic diagram of temperature controller among Fig. 3;
Fig. 6 is the vertical view cutaway drawing of Fig. 1 along A-A.
[specific embodiment]
Below in conjunction with each accompanying drawing the utility model is described in further detail.
Referring to Fig. 1 to Fig. 3, the utility model relates to a kind of overtemperature safeguard structure of multi fan heater, this heater comprises housing 10, is arranged on the blower fan more than two or two 11 in the described housing 10 and is arranged on the respectively heating at these blower fan 11 air outlet places, and electric-controlled parts 13 and the temperature controller that is provided with temperature-sensing element, electric-controlled parts 13 is electrically connected with heating, and temperature controller and heating are electrically connected; Air channel 15 promptly is set in housing 10 in this multi fan heater in addition again, and described air channel 15 is provided with through hole 151 respectively at the close respectively described heating place of this blower fan 11; The temperature-sensing element of described temperature controller is fixed on top, uppermost first through hole 151 tops in the described air channel 15.The top in this air channel 15 has air outlet 152, and the bottom in this air channel 15 also is provided with air inlet 153.As shown in Figure 6, described housing 10 comprises fore shell 16 and back cover 17, is respectively equipped with gusset 161 and 171 in described fore shell 16 and the back cover 17; After described fore shell 16 and back cover 17 are buckled into a casing, fasten mutually by described gusset 161 and 171 and to surround described air channel 15, and have through hole 151 in its corresponding respectively place of these blower fan 11 place's heatings.Or described air channel 15 surrounds by the sheet material 150 on bending edge edge, and this sheet material 150 is flute profile with cover, and has through hole 151 in its corresponding respectively place of these blower fan 11 place's heatings, and sheet material 150 operated by rotary motion are on the madial wall of this heater housing 10.If wherein any one blower fan 11 breaks down and shuts down, then heating is positioned at the temperature rising at its position, front, enter the air themperature in air channel 15 also along with rising near the through hole the heating 151, surpass its secure setting, this variations in temperature is passed to temperature controller by air, temperature controller will cut off the power supply of heating, makes it to quit work; This moment powered-down, wait fix a breakdown after, connect power supply, heating is in normal working temperature under the cooling of the cold wind that blower fan 11 blows out, this multi fan heater can formally be started working again.
Referring to Fig. 2, when the blower fan that has in the heater more than three, because air channel 15 is long, the temperature difference in the air channel 15 is bigger, for improving temperature control sensitivity, can also near through hole 151 places, these 15 inside, air channel of heating a temperature controller be installed respectively at each, be electrically connected on the heating after two or more temperature controller series connection.Though the cost of whole heater is increased, but this heater security performance has been improved, as long as any one temperature of experiencing surpasses its secure setting in two or more temperature controllers, all can cut off the power supply of heating, make it to quit work.
Embodiment one
Present embodiment is the overtemperature safeguard structure that the heater of two typhoon machines is arranged, as shown in Figure 1 and Figure 4, this heater comprises housing 10, be arranged on two typhoon machines 11 that the parallel connections in the described housing 10 are electrically connected and the heating that is arranged at these two typhoons machine, 11 air outlet places, and electric-controlled parts 13 and be provided with the temperature controller of temperature-sensing element.Described heating is a PTC ceramic heating assembly 12, comprises PTC ceramic heating plate 121 and heat sink 122; Perhaps, described heating is the heating wire that is fixed on the heat-resistant insulating board (as micarex).Described temperature controller is a bimetallic type temperature controller 20, comprises temperature-sensing element, insulating base 21 and the conductor wire 22 that is electrically connected with electric-controlled parts 13; Temperature-sensing element is the bimetal leaf assembly, comprises the bimetal leaf 23 and the stationary contact 25 that have movable contact 24; Described bimetallic type temperature controller 20 is electrically connected in series with heating.Air channel 15 promptly is set in housing 10 in this multi fan heater in addition again, as shown in Figure 6, this air channel 15 is after being buckled into a casing by fore shell 16 on the housing 10 and back cover 17, surrounds by the 171 mutual fastenings of the gusset on gusset on the fore shell 16 161 and the back cover 17; Described air channel 15 is provided with through hole 151 respectively at close respectively described heating 12 places of this blower fan 11, and through hole 151 is identical with blower fan 11 quantity, is two; After entering in the air channel 15, two through holes 151 successfully discharge air channel 15 in order to make from the hot-air of the heating 12 before the wind turbine 11, the top in this air channel 15 has air outlet 152, hot-air enters air channel 15 back risings like this, discharges from the air outlet 152 at its top; In order to make air channel 15 can enter some colder air, in order to quicken the circulation of air in the air channel 15, the bottom in this air channel 15 also is provided with air inlet 153; Bimetallic type temperature controller 20 is fixed on these air channel 15 internal upper parts, uppermost first through hole 151 tops.If any one blower fan 11 breaks down and shuts down in two, then heating 12 is positioned at the temperature rising at its position, front, enter the air themperature in air channel 15 also along with rising near the through hole 151 the heating 12, surpass its secure setting, this variations in temperature is passed to bimetallic type temperature controller 20 by air, bimetal leaf 23 heated bendings on this temperature controller 20, and movable contact 24 disconnects with stationary contact 25 on it, cut off the power supply of heating 12, make it to quit work; This moment powered-down, after fixing a breakdown, connect power supply, heating 12 is in normal working temperature under the cooling of the cold wind that blower fan 11 blows out, bimetal leaf 23 actions on this temperature controller 20, make movable contact 24 and stationary contact 25 closures on it, this multi fan heater can formally be started working again.Embodiment two
Present embodiment is the overtemperature safeguard structure that three typhoon machine heaters are arranged, and as Fig. 2 and shown in Figure 4, this example is basic identical with embodiment one, and different is:
First: heating be finned metal electric heating pipe 12 ', comprise electrothermal tube 123 and radiating fin 124;
Second: this heater has three blower fans 11 that are electrically connected arranged side by side and in parallel in main air duct, correspondingly, the through hole 151 in air channel 15 also is provided with three places, place respectively near the three typhoon machines 11, from the heating 12 before the three typhoon machines 11 ' hot-air enter air channel 15 from through hole 151,15 rise along the air channel, discharge air channel 15 from the air outlet 152 at top, 15 bottoms, air channel also are provided with air inlet 153, conveniently enter some colder air, in order to quicken the circulation of air in the air channel 15.In order to improve temperature control sensitivity, present embodiment is except that the top in described air channel 15, bimetallic type temperature controller 20 of uppermost first through hole 151 upper fixed, also receive in the power supply circuits of the heating in the electric-controlled parts 13 after having set up 20 series connection of 20, two bimetallic type temperature controllers of another bimetallic type temperature controller at the internal upper part in this air channel 15, second through hole 151 place; Though the cost of whole heater is increased, this heater security performance has been improved, as long as two bimetallic type temperature controllers 20 any one contacts disconnections, all can cut off heating 12 ' power supply, make it to quit work.
Embodiment three
As Fig. 3 and shown in Figure 5, the temperature controller of present embodiment be electronic type temperature controller 20 ', it is applied to the situation in the heater that heating is a PTC ceramic heating assembly 12.The temperature controller 20 of this electronic type ' the comprise holding wire 27 and the executive component of temperature-sensing element 26, control element, connection temperature-sensing element 26 and control element; Described temperature-sensing element 26 is electrically connected with control element, control element and executive component are included in the described electric-controlled parts 13; Described temperature-sensing element 26 and control element are the temperature control units in the described electric-controlled parts 13, executive component is relay, IGCT or large power triode, be converted to the order of the described heating work of control after the signal of telecommunication that control element is sent this temperature-sensing element 26 here is handled, carry out by described executive component.Temperature-sensing element 26 is occasionally thermistors of thermoelectricity, and their using method is basic identical, is installed in the air channel 15 with mechanical method fixation; For improving reliability, described temperature-sensing element 26 is provided with insulating coating 261.The temperature controller 20 of this heater use one cover electronic type ', comprise a temperature-sensing element 26, a cover control element and a cover executive component.When the blower fan that has in the heater more than three, because air channel 15 is long, the temperature difference in the air channel 15 is bigger, for improving temperature control sensitivity, the temperature controller 20 of electronic type ' also can use temperature-sensing element 26 more than one, one of them is fixed on top, uppermost first through hole 151 tops in the described air channel 15, described in addition temperature-sensing element 26 be fixed on successively near from the top successively down except that the described through hole 151 first, these 15 inside, air channel; Two or more temperature-sensing element 26 shared covers can be handled control element, a cover executive component of the signal of telecommunication of many temperature-sensing elements 26 simultaneously.Though the cost of whole heater is increased, but this heater security performance has been improved, as long as the temperature controller 20 of two or more electronic types ' in any one temperature of experiencing surpass its secure setting, all can cut off the power supply of heating, make it to quit work.
The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model; Therefore, all equivalents and modifications of being done with the utility model claim scope all should belong to the covering scope of the utility model claim.
Claims (10)
1. the overtemperature safeguard structure of a multi fan heater, described multi fan heater comprises housing (10), be arranged on the blower fan more than two or two (11) in the described housing (10) and be arranged on the respectively heating at this blower fan (11) air outlet place, and electric-controlled parts (13) and be provided with the temperature controller of temperature-sensing element; It is characterized in that:
Air channel (15) is set in the described housing (10) in addition again, and described air channel (15) have through hole (151) respectively at the close respectively described heating place of this blower fan (11); The temperature-sensing element of described temperature controller is fixed on top, uppermost first through hole (151) top in the described air channel (15).
2. the overtemperature safeguard structure of multi fan heater according to claim 1 is characterized in that:
The top in described air channel (15) has air outlet (152).
3. the overtemperature safeguard structure of multi fan heater according to claim 2 is characterized in that:
The bottom in described air channel (15) also is provided with air inlet (153).
4. according to the overtemperature safeguard structure of each described multi fan heater of claim 1～3, it is characterized in that:
Described housing (10) comprises fore shell (16) and back cover (17), is respectively equipped with gusset (161) and (171) in described fore shell (16) and the back cover (17); After described fore shell (16) and back cover (17) are buckled into a casing, fasten mutually by described gusset (161) and (171) and to surround described air channel (15), and have through hole (151) in the place that its corresponding respectively this blower fan (11) is located heating.
5. according to the overtemperature safeguard structure of each described multi fan heater of claim 1～3, it is characterized in that:
Described air channel (15) surrounds by the sheet material (150) on bending edge edge, and this sheet material (150) is flute profile with cover, and has through hole (151) in the place that its corresponding respectively this blower fan (11) is located heating.
6. the overtemperature safeguard structure of multi fan heater according to claim 1 is characterized in that:
Described temperature controller is one or mutual more than one bimetallic type temperature controller (20) of connecting, and comprises temperature-sensing element, insulating base (21) and the conductor wire (22) that is electrically connected with described electric-controlled parts (13); Described temperature-sensing element is the bimetal leaf assembly, comprises the bimetal leaf (23) and the stationary contact (25) that have movable contact (24); Described bimetallic type temperature controller (20) is electrically connected in series with heating;
When described temperature controller is more than one bimetallic type temperature controller (20), the temperature-sensing element of one of them is fixed on top, uppermost first through hole (151) top in the described air channel (15), in addition the temperature-sensing element of described temperature controller be fixed on successively near from the top successively down except that the described through hole (151) first, inside, this air channel (15).
7. the overtemperature safeguard structure of multi fan heater according to claim 1 is characterized in that:
Described temperature controller is the temperature controller (20 ') of electronic type, comprises the holding wire (27) and the executive component of one or more temperature-sensing element (26), control element, electrical connection temperature-sensing element (26) and control element; Described temperature-sensing element (26) is electrically connected with control element separately, described control element and executive component are included in the described electric-controlled parts (13), be converted to the order of the described heating work of control after the signal of telecommunication that described control element is sent this temperature-sensing element (26) here is handled, carry out by described executive component;
When described temperature-sensing element (26) is one when above, one of them is fixed on top, uppermost first through hole (151) top in the described air channel (15), described in addition temperature-sensing element (26) be fixed on successively near from the top successively down except that the described through hole (151) first, inside, this air channel (15).
8. the overtemperature safeguard structure of multi fan heater according to claim 7 is characterized in that:
Described temperature-sensing element (26) and described control element are the temperature control units in the described electric-controlled parts (13), and described executive component is relay, IGCT or large power triode.
9. the overtemperature safeguard structure of multi fan heater according to claim 7 is characterized in that:
Described temperature-sensing element (26) is an occasionally thermistor of thermoelectricity, and described temperature-sensing element (26) is provided with insulating coating (261).
10. the overtemperature safeguard structure of multi fan heater according to claim 1 is characterized in that:
Described heating is PTC ceramic heating assembly (12), comprises PTC ceramic heating plate (121) and heat sink (122); Perhaps, described heating is the heating wire that is fixed on the heat-resistant insulating board; Perhaps, described heating is a finned metal electric heating pipe (12 '), comprises electrothermal tube (123) and radiating fin (124).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200947478U CN201209952Y (en) | 2008-05-16 | 2008-05-16 | Overtemperature protective structure for multi-fan heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200947478U CN201209952Y (en) | 2008-05-16 | 2008-05-16 | Overtemperature protective structure for multi-fan heater |
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| Publication Number | Publication Date |
|---|---|
| CN201209952Y true CN201209952Y (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200947478U Expired - Lifetime CN201209952Y (en) | 2008-05-16 | 2008-05-16 | Overtemperature protective structure for multi-fan heater |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679436A (en) * | 2012-05-16 | 2012-09-19 | 广东美的环境电器制造有限公司 | Far infrared warmer |
| CN105346547A (en) * | 2015-09-30 | 2016-02-24 | 无锡惠发特精密机械有限公司 | Warm air blower for locomotive cab |
| CN107702335A (en) * | 2017-10-13 | 2018-02-16 | 李坚祥 | A kind of gas molding hot air machine |
| CN107894096A (en) * | 2017-12-14 | 2018-04-10 | 珠海格力电器股份有限公司 | Heating device |
| CN111664496A (en) * | 2020-06-08 | 2020-09-15 | 嘉兴市品鼎电器有限公司 | Heating device |
| CN113091326A (en) * | 2021-03-31 | 2021-07-09 | 青岛海尔空调器有限总公司 | Safety protection control method and device for fan heater and fan heater |
-
2008
- 2008-05-16 CN CNU2008200947478U patent/CN201209952Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679436A (en) * | 2012-05-16 | 2012-09-19 | 广东美的环境电器制造有限公司 | Far infrared warmer |
| CN105346547A (en) * | 2015-09-30 | 2016-02-24 | 无锡惠发特精密机械有限公司 | Warm air blower for locomotive cab |
| CN107702335A (en) * | 2017-10-13 | 2018-02-16 | 李坚祥 | A kind of gas molding hot air machine |
| CN107894096A (en) * | 2017-12-14 | 2018-04-10 | 珠海格力电器股份有限公司 | Heating device |
| CN111664496A (en) * | 2020-06-08 | 2020-09-15 | 嘉兴市品鼎电器有限公司 | Heating device |
| CN113091326A (en) * | 2021-03-31 | 2021-07-09 | 青岛海尔空调器有限总公司 | Safety protection control method and device for fan heater and fan heater |
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Address after: Floor 1, building 21, LIAN Science Park, 3 South Lan street, Longgang District, Guangdong City, Shenzhen Province, China: 518112 Patentee after: Shenzhen Lianchuang Technology Group Co., Ltd. Address before: Guangdong Province, Shenzhen City, Futian District Hongli Road Shangbu industrial district 304 Building 1 floor, zip code: 518031 Patentee before: Shenzhen Lianchuang Industry Co., Ltd. |
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Owner name: SHENZHEN LIANCHUANG SANJIN ELECTRIC CO., LTD. Free format text: FORMER OWNER: SHENZHEN LIANCHUANG TECHNOLOGY GROUP CO., LTD. Effective date: 20100702 |
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Free format text: CORRECT: ADDRESS; FROM: 518112 3RD FLOOR, BUILDING 1, LIANCHUANG SCI-TECH PARK, NO.21, BULAN ROAD, NANWAN STREET, LONGGANG DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518109 NO.23, HEPING EAST ROAD, LONGHUA STREET OFFICES, LONGHUA TOWN, BAO'AN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
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Effective date of registration: 20100702 Address after: 518109 Baoan District, Shenzhen, Longhua Town, Longhua street, Heping Road, No. 23 East Road, No. Patentee after: Lianchuang Sanjin Electric Appliance (Shenzhen) Co., Ltd. Address before: 518112, 3 floor, 1 LIAN Science Park, South Bay Street, Longgang District, Shenzhen District, Guangdong, Patentee before: Shenzhen Lianchuang Technology Group Co., Ltd. |
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Owner name: SHENZHEN LIANCHUANG ELECTRICAL APPLIANCE INDUSTRY Free format text: FORMER OWNER: THREE LIANCHUANG ELECTRONICS (SHENZHEN) CO., LTD. Effective date: 20110330 |
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Free format text: CORRECT: ADDRESS; FROM: 518109 NO. 23, HEPING EAST ROAD, LONGHUA SUBDISTRICT, LONGHUA TOWN, BAOAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518112 LIANCHUANG SCIENCE AND TECHNOLOGY PARK, BULAN ROAD, NANWAN SUBDISTRICT, LONGGANG DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
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Effective date of registration: 20110330 Address after: Longgang District of Shenzhen City, Guangdong province 518112 South Bay Street cloth LAN Lu LIAN Technology Park Patentee after: Shenzhen Lianchuang Electric Appliance Co., Ltd. Address before: 518109 Baoan District, Shenzhen, Longhua Town, Longhua street, Heping Road, No. 23 East Road, No. Patentee before: Lianchuang Sanjin Electric Appliance (Shenzhen) Co., Ltd. |
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