CN202177324U - Header bearing type heat exchanger - Google Patents
Header bearing type heat exchanger Download PDFInfo
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- CN202177324U CN202177324U CN2011202555321U CN201120255532U CN202177324U CN 202177324 U CN202177324 U CN 202177324U CN 2011202555321 U CN2011202555321 U CN 2011202555321U CN 201120255532 U CN201120255532 U CN 201120255532U CN 202177324 U CN202177324 U CN 202177324U
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Abstract
The utility model provides a header bearing type heat exchanger, which exchanges heat to obtain hot tap water via heating hot water. The header bearing type heat exchanger comprises: two headers, each header comprises a header housing, a hole plate, and a cover plate. Two or more than two tap water heat absorbing pipes are fixedly connected between the two headers, a heating heat supply pipes is inserted in each tap water heat absorbing pipe, the heating heat supply pipes are communicated, one end of the heating heat supply pipes is connected with a heating water inlet, and the other is connected with the heating water outlet; the internal of one of the headers is provided with one or more than one water blocking plate, the internal of the other header is provided with one or more than one water blocking plate. The periphery of the water blocking plate is provided with turning edges, one side edge is welded on the hole plate, other side edges are clamped or welded on the header housing. The periphery of the cover plate is provided with turning edges, plate edges at the two sides of the hole plate are folded outward to be edges, the edges folded outward at the two sides of the hole plate are in parallel welding connection with plate edges of the header housing. The header housing pipe plate parallel connector welding seam bears pressure, water leakage of the welding seam is not generated, and reverse-flow type heat exchange can be realized.
Description
Technical field
The utility model relates to a kind of installing and using on civilian household heater heat supplying pipeline, utilizes heating installation hot water to carry out the heating exchanger that the running water bathing of heat is obtained in heat exchange, relates in particular to a kind of header pressure-bearing type heat exchange device.
Background technology
The applicant applied on June 10th, 2008, on June 3rd, 2009 authorized, the patent No. is that proof existed obvious deficiency and defective really in practice after patented product that CN200820024167.1, utility model name are called " header shunting heat storage adverse current type heat exchanger " was put on market; Can not vertically install; Stored hot water is limited during because of static state, usefulness more to be heated such as needs in the way of having a bath, occur one take turns can not produce more than 38C ° defective such as hot water bathing continuously, the user is unsatisfied with.The patented product running water endothermic tube caliber is thick, volume big, the water storage cavity is big; It is slow that heating tube heats the cold water of big cavity; Instant heating is difficult to realize, manufacturing cost is high, can not vertically install, take up room greatly, not attractive in appearance, waste mounting material and labour cost.
The applicant's patent No. is that the former patent " header shunting heat storage adverse current type heat exchanger " of CN200820024167.1 can not vertically be installed reason and is: the shunting water-stop sheet is at one end in the header cavity; Not to be tightly connected to cause going here and there water and directly advance directly to go out not circulate, can not vertically install.If vertical the installation, 4 pipe joints must make progress, and cause vent valve downward, are prone to vent plug, and heating tube does not circulate and can't use.
In addition, generally adopt the floor heating heat supply at present, if vertical mounting pipe joint needs near floor mounted.Pipe joint is upwards installed and caused the mounting material waste, and is not attractive in appearance.If 4 pipe joint is easy for installation downwards, material-saving is quick, attractive in appearance; But running water system does not circulate; Because of 4 pipe joints design at one end on the header, water-stop sheet is not to be sealedly connected with the slit, and cold water directly advances directly through the slit of water-stop sheet in the header cavity of bottom; Hot water becomes dead angle whole running water system heating not circulate to form and goes up heat cool two districts down in top header and the pipe, and can not putting hot water can't use.
The applicant applied on June 10th, 2008, on June 3rd, 2009 authorized, the patent No. is after patented product that CN200820024167.1, utility model name are called " header shunting heat storage adverse current type heat exchanger " is put on market; There are obvious deficiency and defective through practical proof of three heating phases; Installation direction is limited, can not vertically install, and can not produce hot water more than 38 ℃ continuously; Most critical be that header welding point angle welding is leaked, the too high about 15%--28% of water leakage ratio.On header, orifice plate, communicating pipe welding point angle welding structure, have defective, because the welding of the patented product tube plate structure, the header cavity is greater than the pipe cavity; It is the weakest position of compression resistance; Mostly the header design is the about 90 ° of corner joints of " D " word shape or cuboid cavity, particularly header and orifice plate, and angle welding is the highest position of water leakage ratio; Profile material tube is water-tight, is again that the pipe compression resistance is strong.Must solve header pressure-bearing welding point welding line structure problem, it is water-tight to solve product, reduces product repair rate after sale, reduces manufacturing cost and maintenance cost, makes product practical periodically long.
Summary of the invention
The utility model mainly solves header housing pipe sheet weld joint not pressure-bearing, weld seam seepy question or can not vertical installation question.Conventional welding point mode is like banjo fixing butt jointing, lap joint, corner joint, T junction and butt weld, angle welding etc.The thin-wall stainless steel tube sheet is made the header housing and is used conventional welding method, has weld defect.Former patented product is air seal test 2.5Mpa before dispatching from the factory, 20 minutes ne-leakages of pressurize, the user practical about 20-30 days of heating period through shrinkage thermal expansion physical reactions; The bead crack seepage just occurs, have universal phenomenon, an after-market product repeated to repair about 1-10 time in a heating phase; Scrappage is 20%; Repair rate is about 28%, and maintenance cost surpasses manufacturing cost, and factory has become salvage station not have sharp production.
The purpose of the utility model provides a kind ofly utilizes the user of heating pipe network thermal source to have a bath; The endothermic tube non-scaling; Cavity clearance is little between two medium tube pipes, cold fluid parcel heat pipe adverse current in narrow and small cavity, and heat conduction is fast; Heat is big, and header housing tube sheet also connects the watertight header pressure-bearing type heat exchange of joint welding device.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of header pressure-bearing type heat exchange device comprises: two headers, and header comprises header housing, orifice plate and cover plate, is fixedly connected with heating installation water inlet, heating installation delivery port, running water inlet and running water outlet on the header; Be fixedly connected with two or more running water endothermic tubes between two headers; Be installed with the heating supply pipe in the running water endothermic tube; The heating supply pipe is what be communicated with; One end of the heating supply pipe after the connection connects described heating installation water inlet, and the other end of heating supply pipe connects described heating installation delivery port; It is characterized in that: be provided with one or more water blockoff plate in a header therein.
According to described header pressure-bearing type heat exchange device, it is characterized in that: in another header, be provided with one or more water blockoff plate.
According to described header pressure-bearing type heat exchange device, it is characterized in that: have flange around the described water blockoff plate, or simultaneously other have worn flange for the plane.
According to described header pressure-bearing type heat exchange device, it is characterized in that: have flange around the described cover plate.
According to described header pressure-bearing type heat exchange device, it is characterized in that: the edges of boards of described orifice plate both sides outwards folding have the limit, and the orifice plate both sides outwards limit and the header housing edges of boards and connecing of folding are welded to connect.
According to described header pressure-bearing type heat exchange device, it is characterized in that: described header comprises first header and second header; First header comprises: the first header housing, orifice plate and cover plate, and there is the limit in the hole of orifice plate to in-draw, and the edges of boards of orifice plate both sides outwards folding have the limit, and the orifice plate both sides outwards limit and the first header housing edges of boards and connecing of folding are welded to connect; Orifice plate is to the Kong Bianyu of in-draw running water endothermic tube and connect and be welded to connect; The two ends of the first header housing, the two ends of orifice plate are respectively with cover plate and connect and be welded to connect; Second header comprises: the second header housing, orifice plate and cover plate, and there is the limit in the hole of orifice plate to in-draw, and the edges of boards of orifice plate both sides outwards folding have the limit, and the orifice plate both sides outwards edges of boards and the second header housing edges of boards and connecing of folding are welded to connect; Orifice plate is to the Kong Bianyu of in-draw running water endothermic tube and connect and be welded to connect; The two ends of the second header housing, the two ends of orifice plate are respectively with cover plate and connect and be welded to connect.
According to described header pressure-bearing type heat exchange device, it is characterized in that: described water blockoff plate one side be stuck in or seal the welding or means of spot welds on orifice plate, other sides be stuck in or seal the welding or means of spot welds on the header housing.
According to described header pressure-bearing type heat exchange device; It is characterized in that: described water blockoff plate simultaneously is the plane; Other have worn flange; Have water blockoff plate insertion mouth on the described orifice plate, the water blockoff plate of the flat edge insertion orifice plate of water blockoff plate inserts in the mouth and is welded to connect on orifice plate, and other limits of water blockoff plate seal welding or means of spot welds or are stuck on the header housing.
According to described header pressure-bearing type heat exchange device; It is characterized in that: described water blockoff plate simultaneously is the plane; Other have worn flange; Described orifice plate is that the flat edge of water blockoff plate was welded to connect on the seam of two knothole plates more than two joints and two saved, and other limits of water blockoff plate seal welding or means of spot welds or are stuck on the header housing.
According to described header pressure-bearing type heat exchange device, it is characterized in that: it is stupefied that described header has reinforcement; Curved perhaps through the series connection connection of heat supply communicating pipe between the said heating supply pipe through holding; Described header housing, orifice plate, cover plate, water blockoff plate, running water endothermic tube, heating supply pipe, water blockoff plate are stainless steel material.
The utility model is dared to experiment to reform and is created; Change the welding point mode and the weld seam form of former patented product; Rationally arrange header housing position while welding; Improve the mechanical property of weld seam, take workpiece compacting plumb joint to inlay compound and connect face bonding, solved header housing welding point weld seam seepy question from the innovation structure that fuses welding.The utility model cover plate, water-stop sheet outward flanging; The hole of orifice plate is to in-draw, the outside flanging of the edges of boards of orifice plate, and workpiece flange weldment also connects the plumb joint welding and can evenly control molten hole and molten bath; Be prone to the through welding even weld, its purpose reduces flexural deformation, and anti-impact force is strong; Gain in strength, compression resistance is big, and the weld seam flawless is water-tight.Tube sheet is taked to inlay compound weldering and is connect joint design.Solve welding flexural deformation, change corner joint, angle welding position, improved the weld seam welding quality.The member follow procedure does not have the gap to be inlayed tube sheet two walls and merges the bilateral alignment of welding point port, and argon arc welding is pinched limit formula downhand welding method and inlayed from fusion sealing Welding Structure or plate and plate that the splice bar port is bilateral to align and connect Welding Structure, is superior to the one side welding with back formation technology.Strengthened tensile strength, improved hardness, reduced 4 weld seam angle of bend of header, and weld seam does not contact advantages such as minimizing corrosion and water flow velocity friction welding bead with WATER AS FLOW MEDIUM.
In addition; Header housing tube sheet member does not have the gap, and to inlay tube sheet compound and connect the bilateral alignment of port and pinch limit downhand welding method from fusion welding, reduces welding stress or linear shrinkage distortion, angular deformation etc., improves the anti intercrystalline corrosion ability of welding point; Improve welding joint mechanical property, compressive resistance is big.Filler wire weldering speed is fast, and pore-free, add slag, crackle, weld appearance and be shaped beautifully, be a kind of efficient, high-quality, economy, energy-conservation advanced welding procedure.The utility model header housing tube sheet and joint welded seam pressure-bearing, weld seam are water-tight, and water blockoff plate sealing welding can realize vertical installation, and the utility model also can be realized counter-flow heat exchange.
Description of drawings
Fig. 1 has only a water blockoff plate in header of the utility model, the structural representation of no water blockoff plate in another header.
Fig. 2 is for there being the structural representation of a plurality of water blockoff plates in the header in the utility model.
Fig. 3 is the external structure sketch map in the utility model.
The structural representation of Fig. 4 when to be that the utility model is vertical install.
Fig. 5 is the partial enlarged drawing among Fig. 1.
Fig. 6 is the structural representation of the first header housing.
Fig. 7 is the A-A cutaway view of Fig. 6.
Fig. 8 is the structural representation of cover plate 3.
Fig. 9 is the front view of cover plate 3.
Figure 10 is the B-B cutaway view of Fig. 9.
Figure 11 is the structural representation of cover plate 7 or water blockoff plate 11, and water blockoff plate 11 is identical with cover plate 7 structures.
Figure 12 is the front view of cover plate 7 or water blockoff plate 11.
Figure 13 is the C-C cutaway view of Figure 12.
Figure 14 is the front view of the another kind of shape of water blockoff plate 11.
Figure 15 is the D-D cutaway view of Figure 12.
Figure 16 is the front view of orifice plate.
Figure 17 is the E-E cutaway view of Figure 16.
Figure 18 is the welding connection structure sketch map between the first header housing and orifice plate, orifice plate and the running water endothermic tube.
In the accompanying drawing: 1, heating installation water inlet; 2, running water outlet; 3, cover plate; 4, orifice plate; 5, running water endothermic tube; 6, heating supply pipe; 7, cover plate; 8, the second header housing; 9, running water inlet; 10, heating installation delivery port; 11, water blockoff plate; 12, the first header housing; 13, heat supply communicating pipe; 14, reinforcement is stupefied.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:
The utility model header pressure-bearing type heat exchange device such as Fig. 1, shown in Figure 2 comprise: two headers, and header comprises header housing, orifice plate 4 and cover plate, is fixedly connected with heating installation water inlet 1, heating installation delivery port 10, running water inlet 9 and running water outlet 2 on the header; Be fixedly connected with two or more running water endothermic tubes 5 between two headers; Be installed with heating supply pipe 6 in the running water endothermic tube 5; Heating supply pipe 6 is what be communicated with; One end of the heating supply pipe 6 after the connection connects described heating installation water inlet 1, and the other end of heating supply pipe 6 connects described heating installation delivery port 10; It is characterized in that: be provided with one or more water blockoff plate 11 in a header therein.
The utility model header pressure-bearing type heat exchange device is provided with one or more water blockoff plate 11 in another header.
The shape identical (referring to the cover plate among Figure 11, Figure 12, Figure 13 7) that has flange and cover plate 7 around the water blockoff plate 11 of the utility model, perhaps the one side of water blockoff plate 11 be the plane other wear flange (referring to the water blockoff plate in Left-wing Federation's case among Fig. 2 11 and Figure 14, Figure 15).
Like Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, shown in Figure 13, have flange around the cover plate 3 of the utility model, the cover plate 7.
The edges of boards of the orifice plate 4 of the utility model (referring to Figure 16, Figure 17) both sides outwards folding have the limit, orifice plate 4 both sides outwards folding limit and header housing edges of boards and connect and be welded to connect (referring to Figure 18).
The header of the utility model comprises first header and second header; First header comprises: the first header housing 12, orifice plate 4 and cover plate 3, and there is the limit in the hole of orifice plate 4 to in-draw, and the edges of boards of orifice plate 4 both sides outwards folding have the limit, and the orifice plate 4 both sides outwards limit and the first header housing, 12 edges of boards and connecing of folding are welded to connect; The hole of orifice plate 4 is welded to connect to the Kong Bianyu of in-draw running water endothermic tube 5; The two ends of the two ends of the first header housing 12, orifice plate 4 are respectively with cover plate 3 and connect and be welded to connect; Second header comprises: the second header housing 8, orifice plate 4 and cover plate 7, and there is the limit in the hole of orifice plate 4 to in-draw, and the edges of boards of orifice plate 4 both sides outwards folding have the limit, and the orifice plate 4 both sides outwards edges of boards and the second header housing, 8 edges of boards and connecing of folding are welded to connect; The hole of orifice plate 4 is to the Kong Bianyu of in-draw running water endothermic tube 5 and connect and be welded to connect; The two ends of the two ends of the second header housing 8, orifice plate 4 are respectively with cover plate 7 and connect and be welded to connect.
Perhaps; Water blockoff plate 11 one sides of the utility model are the plane, and other have worn flange, and orifice plate 4 is more than two joints and two save; The flat edge of water blockoff plate 11 is welded to connect on the seam of two knothole plates 4, and other limits of water blockoff plate 11 seal welding or means of spot welds or are stuck on the header housing.
The header of the utility model has stupefied 14 (referring to the Fig. 3) of reinforcement.
Curved perhaps through heat supply communicating pipes 13 series connection connection (referring to Fig. 2) between the utility model heating supply pipe through holding.
The header housing of the utility model, orifice plate, cover plate, water blockoff plate, running water endothermic tube, heating supply pipe, water blockoff plate etc. are stainless steel material.
Welding is meant seal weld or spot welding in the utility model.
The applicant dares to experiment to reform and creates; Change the welding point mode and the weld seam form of former patented product; Rationally arrange header housing position while welding; Improve the mechanical property of weld seam, take workpiece compacting plumb joint to inlay compound and connect face bonding, solved header housing welding point weld seam seepy question from the innovation structure that fuses welding.The stainless steel tube sheet material 0.73-0.91mm that the header choosing is thin suppresses four power muscle and strengthens cover plate, water-stop sheet; The high 2mm of outward flanging, orifice bore be to the high 3mm of the in-draw outside flanging of high 2mm edges of boards, and workpiece flange weldment also connects the plumb joint welding and can evenly control molten hole and molten bath; Be prone to the through welding even weld, its purpose reduces flexural deformation, and anti-impact force is strong; Gain in strength, compression resistance is big, and the weld seam flawless is water-tight.Tube sheet is taked to inlay compound and is connect joint design.Solve welding flexural deformation, change corner joint, angle welding position, improved the weld seam welding quality.The member follow procedure does not have the gap to be inlayed tube sheet two walls and merges the bilateral alignment of welding point port, and argon arc welding is pinched limit formula downhand welding method and inlayed from fusion sealing Welding Structure or plate and plate that the splice bar port is bilateral to align and connect Welding Structure, is superior to the one side welding with back formation technology.Strengthened tensile strength, improved hardness, reduced 4 weld seam angle of bend of header, and weld seam does not contact advantages such as minimizing corrosion and water flow velocity friction welding bead with WATER AS FLOW MEDIUM.
In addition; Header housing tube sheet member does not have the gap, and to inlay tube sheet compound and connect the bilateral alignment of port and pinch limit downhand welding method from fusion welding, reduces welding stress or linear shrinkage distortion, angular deformation etc., improves the anti intercrystalline corrosion ability of welding point; Improve welding joint mechanical property, compressive resistance is big.Filler wire weldering speed is fast, and pore-free, add slag, crackle, weld appearance and be shaped beautifully, be a kind of efficient, high-quality, economy, energy-conservation advanced welding procedure.
The utility model has solved one thread two size of heating installation mounting pipe joint and has been divided into 1 cun outer silk of 3/4 (6 fens internal threads), and is easy for installation, and vertical and horizontal all can be installed material-saving, innovative product energy-conservation, economic, practical, that periodically grow.
Embodiment recited above describes the preferred implementation of the utility model; Be not that design and protection domain to the utility model limits; Under the prerequisite that does not break away from the utility model design concept; Common engineers and technicians make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model.
Claims (10)
1. header pressure-bearing type heat exchange device, comprising: two headers, header comprise header housing, orifice plate (4) and cover plate, are fixedly connected with heating installation water inlet (1), heating installation delivery port (10), running water inlet (9) and running water outlet (2) on the header; Be fixedly connected with two or more running water endothermic tubes (5) between two headers; Be installed with heating supply pipe (6) in the running water endothermic tube (5); Heating supply pipe (6) is what be communicated with; One end of the heating supply pipe (6) after the connection connects described heating installation water inlet (1), and the other end of heating supply pipe (6) connects described heating installation delivery port (10); It is characterized in that: be provided with one or more water blockoff plate (11) in a header therein.
2. header pressure-bearing type heat exchange device according to claim 1 is characterized in that: in another header, be provided with one or more water blockoff plate (11).
3. header pressure-bearing type heat exchange device according to claim 1 is characterized in that: described water blockoff plate (11) has flange all around, or simultaneously other have worn flange for the plane.
4. header pressure-bearing type heat exchange device according to claim 1 is characterized in that: described cover plate (3,7) has flange all around.
5. header pressure-bearing type heat exchange device according to claim 1 is characterized in that: the edges of boards of described orifice plate (4) both sides outwards folding have the limit, and orifice plate (4) the both sides outwards limit and the header housing edges of boards and connecing of folding are welded to connect.
6. according to claim 1 or 4 described header pressure-bearing type heat exchange devices, it is characterized in that: described header comprises first header and second header; First header comprises: the first header housing (12), orifice plate (4) and cover plate (3), and there is the limit in the hole of orifice plate (4) to in-draw, and the edges of boards of orifice plate (4) both sides outwards folding have the limit, and orifice plate (4) the both sides outwards limit and first header housing (12) edges of boards and connecing of folding are welded to connect; Orifice plate (4) is to the Kong Bianyu of in-draw running water endothermic tube (5) and connect and be welded to connect; The two ends of the two ends of the first header housing (12), orifice plate (4) are respectively with cover plate (3) and connect and be welded to connect; Second header comprises: the second header housing (8), orifice plate (4) and cover plate (7), and there is the limit in the hole of orifice plate (4) to in-draw, and the edges of boards of orifice plate (4) both sides outwards folding have the limit, and orifice plate (4) the both sides outwards edges of boards and second header housing (8) edges of boards and connecing of folding are welded to connect; Orifice plate (4) is to the Kong Bianyu of in-draw running water endothermic tube (5) and connect and be welded to connect; The two ends of the two ends of the second header housing (8), orifice plate (4) are respectively with cover plate (7) and connect and be welded to connect.
7. header pressure-bearing type heat exchange device according to claim 1 and 2 is characterized in that: described water blockoff plate (11) one sides be stuck in or seal the welding or means of spot welds on orifice plate (4), other sides be stuck in or seal the welding or means of spot welds on the header housing.
8. header pressure-bearing type heat exchange device according to claim 3; It is characterized in that: described water blockoff plate (11) one side is the plane; Other have worn flange; Have water blockoff plate insertion mouth on the described orifice plate (4), the water blockoff plate of the flat edge insertion orifice plate of water blockoff plate (11) inserts in the mouth and is welded to connect on orifice plate, and other limits of water blockoff plate (11) seal welding or means of spot welds or are stuck on the header housing.
9. header pressure-bearing type heat exchange device according to claim 3; It is characterized in that: described water blockoff plate (11) one side is the plane; Other have worn flange; Described orifice plate (4) is that the flat edge of water blockoff plate (11) was welded to connect on the seam of two knothole plates (4) more than two joints and two saved, and other limits of water blockoff plate (11) seal welding or means of spot welds or are stuck on the header housing.
10. header pressure-bearing type heat exchange device according to claim 1 is characterized in that: described header has reinforcement stupefied (14); Curved perhaps through heat supply communicating pipe (13) series connection connection between the said heating supply pipe through holding; Described header housing, orifice plate, cover plate, water blockoff plate, running water endothermic tube, heating supply pipe, water blockoff plate are stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202555321U CN202177324U (en) | 2011-07-10 | 2011-07-10 | Header bearing type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202555321U CN202177324U (en) | 2011-07-10 | 2011-07-10 | Header bearing type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202177324U true CN202177324U (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202555321U Expired - Fee Related CN202177324U (en) | 2011-07-10 | 2011-07-10 | Header bearing type heat exchanger |
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| Country | Link |
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| CN (1) | CN202177324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297613A (en) * | 2011-07-10 | 2011-12-28 | 张伟 | Header pressure-bearing heat exchanger |
| CN102650502A (en) * | 2012-05-25 | 2012-08-29 | 昆山市宏盛散热器制造有限公司 | Heat radiator |
-
2011
- 2011-07-10 CN CN2011202555321U patent/CN202177324U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297613A (en) * | 2011-07-10 | 2011-12-28 | 张伟 | Header pressure-bearing heat exchanger |
| CN102650502A (en) * | 2012-05-25 | 2012-08-29 | 昆山市宏盛散热器制造有限公司 | Heat radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20150710 |
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| EXPY | Termination of patent right or utility model |