CN1542395A - Self-descaling plate-fin heat exchanger - Google Patents
Self-descaling plate-fin heat exchanger Download PDFInfo
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- CN1542395A CN1542395A CNA031242146A CN03124214A CN1542395A CN 1542395 A CN1542395 A CN 1542395A CN A031242146 A CNA031242146 A CN A031242146A CN 03124214 A CN03124214 A CN 03124214A CN 1542395 A CN1542395 A CN 1542395A
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Abstract
The self-descaling finned plate heat exchanger includes composite finned plate pressure cavity, sealing end plate caps, inlet and outlet medium pipes, sealing fasteners, etc. All the parts may be welded completely or partially to constitute heat exchange units, which are further assembled into detachable heat exchanger. The composite finned plate pressure cavity is one parallel pipe-cavity complex comprising plates, finned plates and medium inlet and outlet pipes connected together via welding. The composite finned plate pressure cavity may produce elastic deformation under action of pressure. There may be heat insulating layer set on the casing of the self-descaling finned plate heat exchanger.
Description
The present invention relates to a kind ofly, belong to field of heat exchangers from the scale removal plate-fin heat exchanger.
At present, known air-conditioning high-pressure refrigerant when the condensation heat release, make easily with it the water of heat exchange on water side heat exchange interface, produce incrustation scale, cause heat exchange efficiency to descend, and cause the obstruction of heat exchanger channels easily, flow resistance is increased, power loss increases.As be used to air-conditioning high-pressure refrigerant radiator that adds hot water etc.
During high temperature refrigerant gas that air conditioner when work compressor is discharged, the heat of vaporization of high-temperature gas is drained by condenser, when heating by the indoor set heat supply.Because present air conditioner only has the function of air temperature modification and dehumidifier, purposes is single, and capacity usage ratio is low.And because compact conformation, particularly plate type heat exchanger fouling and the residing spatial constraints of air-conditioner, the heat exchanger efficiency that makes is low, is difficult for installing, and is unfavorable for the further raising of capacity usage ratio.On the circulation line of air conditioner refrigeration agent, can add heat exchanger and carry out UTILIZATION OF VESIDUAL HEAT IN or ice cold-storage.In order to realize this purpose, need more suitable heat exchanger.
The purpose of this invention is to provide that a kind of it is simple in structure from the scale removal plate-fin heat exchanger, bearing capacity is strong, and area of dissipation is big, from scale removal.It is not being changed under the prerequisite of air conditioner structure substantially, be used for the recuperation of heat of air-conditioning high-pressure refrigerant when the condensation heat release, can realize the UTILIZATION OF VESIDUAL HEAT IN of air conditioner effectively, also can be used as other purposes and use, and have insulation and sound insulation value.
The object of the present invention is achieved like this: a kind of from the scale removal plate-fin heat exchanger, comprise plate fin compound deformable pressure-bearing cavity volume and the plate that cooperates with it by sealing, medium turnover tube connector, compositions such as sealing fastening assembly.Plate fin compound deformable pressure-bearing cavity volume and the plate that cooperates with it by sealing, medium turnover tube connector can be formed the heat exchange unit of two media at least by being welded to connect entirely.Or by partly being welded to form the compound deformable pressure-bearing of plate fin cavity volume, plate fin compound deformable pressure-bearing cavity volume and the compound deformable pressure-bearing of plate fin cavity volume, plate connect to form the heat exchange unit plate-fin heat exchanger of two media at least.The former plate, plate fin, plate, medium turnover tube connector are welded, plate, plate fin, plate stack connection, plate fin and the welding of plate inner surface junction, constitute two not connected cavitys, the two ends of two cavitys connect draws medium turnover tube connector, forms the non-removable plate-fin heat exchanger of heat exchange unit; The latter then is that plate, plate fin, medium turnover tube connector weld together and form the sweating heat crosspoint, assemble with heat exchange unit or plate then, stack mutually, form the MEDIA FLOW chamber, with the elastomeric pad sealing, form dismountable plate-fin heat exchanger between sweating heat crosspoint or the plate.There is certain elasticity at the fin plate heat exchange interface and the plate interface of plate-fin heat exchanger, the cavity of forming can the elasticity of bulk expand under big pressure, elasticity of bulk contraction distortion under less pressure, its normal pressure section structure of cavity is other shape except that positive circular arc.On scale removal plate-fin heat exchanger housing, heat-insulation layer can be set.
The plate fin can be forms such as plain fin, serrated fin, corrugated fin, and fin plate is shaped by punching stretch, but is shaped with the end socket synchro-draw, also can pass through welding forming, the interface of fin is for expanding under big pressure, and cubical expansion is out of shape and is out of shape under less pressure and recovers.Cavity volume under the normal pressure, its structure can be other shape the circular arc that can not change except that volume.Fin is the primary element of plate-fin heat exchanger, and the diabatic process in the plate-fin heat exchanger mainly is to finish by heat convection between the heat conduction of fin and fin and the fluid.
The effect of fin is:
(1) enlarge heat transfer area, improve the compactedness of heat exchanger, fin can be regarded the extension and the expansion of dividing plate as, simultaneously because fin has the specific area more much bigger than dividing plate, thereby compactedness is obviously increased;
(2) improve heat transfer efficiency, because the special construction of fin, fluid forms strong disturbance in runner, make the boundary layer constantly break, upgrade, thereby reduced thermal resistance effectively, has improved heat transfer efficiency;
(3) improved the intensity and the bearing capacity of heat exchanger,, made the plate chamber form firm integral body, so can bear certain pressure although fin is all very thin because fin plays a part ribs.
(4) fin is because the designed elasticity pressure-bearing cavity volume distressed structure that is shaped as, promptly when pressure increases, deformation takes place in the fin metallic plate under the effect of pressure, when pressure reduces, fin metallic plate elasticity is recovered original shape, can remove attached to the fragility calcium dirt on the fin metallic plate, realize therefore can realizing the unattenuated of plate heat exchange efficiency from descaling function.
The structural shape of several fins commonly used:
(1) plain fin is stamped to form by foil, its heat exchange is interior mobile similar to flow dynamic characteristic and pipe, fin with respect to other structural shapes, be characterized in that the coefficient of heat transfer, flow resistance coefficient are all smaller, this fin generally is used in and requires smaller fluid resistance and the heat transfer occasion of the coefficient of heat transfer of himself bigger (for example liquid side or undergo phase transition).Plain fin generally has higher intensity.
(2) saw tooth fin, saw tooth fin can be regarded plain fin as and be cut into many short and small fragments and stagger certain intervals mutually and the discontinuous fin that forms.This fin is to promoting the disturbance of fluid, and it is very effective to destroy the thermal resistance boundary layer, belongs to high-effect fin but fluid corresponding increase of its flow resistance during by saw tooth fin.Saw tooth fin generally is used in the occasion that needs augmentation of heat transfer (especially gas side).
(3) corrugated fin, corrugated fin are with the foil punching press or are rolled into certain waveform, form curved channel, make fluid constantly change flow direction therein, to promote the disturbance of fluid, separate or destruction thermal resistance boundary layer, and its effect is equivalent to the fracture of fin.Ripple is closeer, and wave amplitude is bigger, more can augmentation of heat transfer.
Plate can be flat board or can be punching out on the plate groove with the different reinforcement flow-disturbings of fin plate flow path groove direction.
The compound deformable pressure-bearing of plate fin cavity volume is that plate fin, sheet plate, medium turnover tube connector pass through welding forming, it is the complex that has the forming tube cavity configuration, sealing each other between the runner of tube chamber, the heat exchange interface of fin plate has certain elasticity, can under big pressure, the elasticity of bulk expand, elasticity of bulk contraction distortion under less pressure, its normal pressure structure is other shape except that positive circular arc, welding manner can be multiple Type of Welding such as soldering, electric resistance welding, microwave weldering, Laser Welding.
On the plate of dismountable plate-fin heat exchanger or the plate fin flow-disturbing fin can be installed, flow-disturbing fin correspondence is installed on the trench place of adjacent fins plate, can be useful on the pore of cross-under fastening bolt on the flow-disturbing fin, the pore of adjacent fastening bolt is on same straight line, be supported on the trench place of adjacent fins plate with the flow-disturbing fin, the flow-disturbing fin is wavy; Plate and plate fin edge can be useful on the wave groove edge of positioning seals.
Stack mutually by seal between plate chamber and the plate chamber, form water cavity, the flow-disturbing fin is supported between plate chamber and the plate chamber, and the end plate that is fixed and clamped by independent setting compresses seal combination with bolt.
Stack mutually by seal between the plate chamber of dismountable plate-fin heat exchanger and the plate chamber, form and walk water cavity, the flow-disturbing fin is supported between plate chamber and the plate chamber, be installed with clamping screw within the guide hole, the lock sealing bolt compresses seal combination by the rigidity pressure-bearing pad frame that compression end covers with each heat exchange cavity.
The sealing fastening assembly comprises bolt, has the sealed loop-pad of certain thickness conventional rubber or the manufacturing of other elastomeric material, or circle pad, the rigidity pressure-bearing pad frame of the rubber of middle built-in support or the manufacturing of other elastomeric material.
The deformation pressure-bearing cavity volume of heat exchange unit plate, plate fin, the compound full welded seal moulding of plate, pick out by medium turnover tube connector, or be connected in series, be connected in parallel, or series, parallel connects, form different heat exchange runners, can form the heat exchange unit of two media at least by being welded to connect entirely.The plate end cap of Pei Heing with it, all-welded finned heat exchanger can pass through the bolt securing member, bolt is formed a heat exchanger that stacks mutually, and the two media of every group of heat exchanger can establish one's own system by serial or parallel connection, and the heat transferring medium that feeds in the heat exchanger can be at least two kinds together.
Heat exchange unit is for to form the heat exchange unit plate type heat exchanger of two media at least by partly being welded to connect.The former plate, plate fin, plate, medium turnover tube connector are welded, and are the non-removable plate-fin heat exchangers of heat exchange unit; The latter then is plate, plate fin, medium turnover tube connector welds together becomes the sweating heat crosspoint, assemble with heat exchange unit or plate then, stack mutually, form the MEDIA FLOW chamber, use gasket seal between welding unit or the plate, form dismountable plate-fin heat exchanger.Medium between the heat exchange unit can pass in and out tube connector by medium and be connected in series, is connected in parallel or for series, parallel connects, form different heat exchange runners.Plate-fin heat exchanger can be arranged to adverse current, cross-flow, multiple flow, multipass flow by the various combination of runner, and it also is the most basic runner layout pattern that adverse current is used the most generally.Cross-flow generally is used in its effective temperature difference and is not starkly lower than adverse current, or the variations in temperature of a side liquid is not more than half occasion of cold and hot fluid maximum temperature difference.
Plate-fin heat exchanger need make up by series, parallel, the connection in series-parallel of many cell board bundles, and when unit combination, a very important problem is exactly how to make fluid in the intrafascicular uniform distribution of these cell boards.Should adopt symmetric form from fluid uniform distribution angle as far as possible, avoid parallel flow type, because each unit fluid resistance may not wait, should note mating proper during combination, the layout of process pipe also will be noted this point.
Housing can be used stainless steel, copper and alloy thereof, and aluminium and alloy thereof, carbon steel sheet or other have certain intensity and flexible sheet metal is made, and metallic spacer layer can adopt identical materials with housing, also can adopt different sheet metals.Full welding heat exchange unit plate, plate fin, plate adopt to stack and are welded, and realize with welding its crest, paddy and metal tangent line intersection, both sides.Partly weld heat exchange unit plate, plate fin and adopt to stack and be welded, its trough is realized with welding with metal sheet intersection on one side.Make it form isolated mutually circulation passage, the both sides of metallic spacer layer are two kinds of circulation mediums, i.e. cold-producing medium and heat exchange agent, and the metallic spacer layer both sides distribute and the busway, link to each other with the passage of metallic spacer layer and housing formation successively and lead to the import and export that diagonal is arranged.The medium of metallic spacer layer both sides carries out heat exchange with reflux type.Cold-producing medium enters a side spatial channel in the housing by the import that is arranged on top, flows out by the outlet of bottom, and the heat exchange agent enters opposite side spatial channel in the housing by the import that is arranged on housing bottom, and flows out by the outlet on top.Cold-producing medium and heat exchange agent are carried out heat exchange by the metallic spacer layer that is provided with in the housing, and import and export makes the flow in each passage identical according to flow design.
Compare with conventional heat exchanger from scale removal plate wing compact heat exchanger and to have following characteristics:
(1) heat transfer efficiency height because the disturbance of fin convection cell is constantly broken the boundary layer, thereby has the bigger coefficient of heat transfer; Simultaneously because the very thin thickness of dividing plate, fin has high-termal conductivity, so that plate-fin heat exchanger can reach very high efficient.
(2) compactness is because plate-fin heat exchanger has two subsurfaces of expansion.
(3) light and handy, owing to compactness and how by the metal alloy manufacturing.
(4) from descaling function, the plate heat exchange efficiency is unattenuated.
Characteristics such as the present invention kept plate type heat exchanger thermal efficiency height, it is little, in light weight to take up room, cost is low, but also have bending, intensity height, take up room littler (its thickness can less than 1cm), be suitable for different space requirements, metallic spacer layer and two kinds of functions of heat exchanger arranged, can large-scale production, higher popularization and application values is arranged.A kind of heat exchanger of new structure is provided, the plate-sheet-type structure, compact conformation, processing is simple.Bearing capacity is strong, and heat exchange area is big, has not only realized the UTILIZATION OF VESIDUAL HEAT IN or the ice accumulation of energy of air conditioner, more can be used as the heat-exchanger rig of other purposes.
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1, Fig. 2 weld entirely from scale removal plate-fin heat exchanger structural representation
Fig. 1 is the plate cavity configuration schematic diagram of full welded plate fin heat exchanger;
Fig. 2 is the cross-sectional configuration schematic diagram of full welded plate fin heat exchanger.
Among the figure: 1 cooling water inlet pipe, 2 cooling water cavities, 3 plate fins, 4 full brazing sheet fin heat exchanger housings, 5 refrigerant outlet pipes, 6 cooling water outlet pipes, 7 refrigerant inlet pipes, 8 plate fin plate welding edges edge, 9 cold-producing medium elasticity variable volume chambers, 10 plates
Among Fig. 1, Fig. 2: plate 10 and plate fin 3 interconnective parts are one by being welded to connect, form plate fin plate welding edge along 8, plate fin 3 and two plate 10 sealings are isolated into cavity 2,9 mutually, this cavity has certain bearing capacity, and plate fin 3 and plate 10 all have the curvature pressurized to change, make the big cavity of pressure have the ability that volume changes, therefore realized the function of automatic desludging, cooling water inlet pipe 1 is arranged with cooling water outlet pipe 6 diagonal, and flow path is equated.Refrigerant inlet pipe 7, refrigerant outlet pipe 5 diagonal are arranged, flow path is equated.
Fig. 3, Fig. 4, Fig. 5, Fig. 6 are that half welding is detachably from scale removal plate-fin heat exchanger structural representation
Fig. 3 is the box-like plate-fin heat exchanger section structure of monolithic half a soldering group schematic diagram;
Fig. 4 is the box-like plate-fin heat exchanger section structure of multi-disc half a soldering group schematic diagram;
Fig. 5 partly welds demountable panel fin heat exchanger facade sectional structure schematic diagram for monolithic;
Fig. 6 partly welds demountable panel fin heat exchanger structural representation for monolithic;
Among the figure: wave groove edge, location, 8 refrigerant outlet pipes, 9 spacer dimple water jackets edge, 10 welded seal faces, 11 lock nuts, 12 bolts are installed pore, 13 cooling water cavities, 14 cooling water outlet pipes, 15 refrigerant inlet pipes, 16 plates, 17 plates, 18 plate fins in 1 cooling water inlet pipe, 2 elastomeric pads, 3 rigidity pressure-bearing pad frames, 4 flow-disturbing fins, 5 lock sealing bolts, the 6 cold-producing medium elasticity variable volume chambers, 7
Among Fig. 3, Fig. 4, Fig. 5, Fig. 6: plate 16 is formed by being welded to form cold-producing medium elasticity variable volume chamber 6 with plate fin 17, elasticity variable volume chamber 6 by interior location wave groove along 7, the spacer dimple water jacket will seal in the groove that the elastomeric pad 2 in the fastening assembly is positioned to form along 9, flow-disturbing fin 4, lock sealing bolt 5, lock nut 11, rigidity pressure-bearing pad frame 3 and nut are installed pore 12 plate fin 18 and cold-producing medium elasticity variable volume chamber 6 seal group are integrated, and form dismountable from the scale removal plate-fin heat exchanger.Wherein cooling water inlet pipe 1 is installed for waiting flow path diagonal angle with cooling water outlet pipe 14, and also for waiting flow path diagonal angle to install, the two is countercurrent flow for cold-producing medium and cooling water for refrigerant inlet pipe 15 and refrigerant outlet pipe 8.Refrigerant inlet pipe 15 is connected in parallel with other refrigerant inlet pipe, refrigerant outlet pipe 8 is connected in parallel with other refrigerant outlet pipe, cooling water inlet pipe 1 is connected in parallel with other cooling water inlet pipe, cooling water outlet pipe 14 is connected in parallel with other cooling water outlet pipe, just forms parallel from scale removal plate-fin heat exchanger group (Fig. 4).Refrigerant inlet connects next plate-fin heat exchanger refrigerant inlet again to refrigerant outlet, and coolant outlet connects cooling water inlet, just forms tandem from scale removal plate-fin heat exchanger group.
Fig. 7 is that half welding is detachably from the cross-sectional structure schematic diagram of another version of scale removal plate-fin heat exchanger;
Fig. 8, Fig. 9 are that half welding is detachably from the cross-sectional structure schematic diagram of another version of scale removal plate-fin heat exchanger;
Figure 10 be half welding detachably from the scale removal plate-fin heat exchanger, its pressure-bearing transfiguration cavity be the structural representation of the plate-fin heat exchanger of middle placement.
Fig. 7, Fig. 8, Fig. 9, Figure 10 principle are equal to Fig. 3, Fig. 4, Fig. 5, Fig. 6, and just the structure difference of the compound deformable pressure-bearing of plate fin cavity volume is all dismountable plate-fin heat exchanger.
Claims (10)
1, a kind of from the scale removal plate-fin heat exchanger, comprise plate fin compound deformable pressure-bearing cavity volume and the plate that cooperates with it by sealing, medium turnover tube connector, compositions such as sealing fastening assembly, it is characterized in that: plate fin compound deformable pressure-bearing cavity volume and the plate that cooperates with it by sealing, medium turnover tube connector, can form the heat exchange unit of two media at least by being welded to connect entirely, or by partly being welded to form the compound deformable pressure-bearing of plate fin cavity volume, plate fin compound deformable pressure-bearing cavity volume and the compound deformable pressure-bearing of plate fin cavity volume, plate connects to form the heat exchange unit plate-fin heat exchanger of two media at least, the former plate, the plate fin, plate, medium turnover tube connector is welded, plate, the plate fin, plate stacks connection, plate fin and the welding of plate inner surface junction, constitute two not connected cavitys, the two ends of two cavitys connect draws medium turnover tube connector, form the non-removable plate-fin heat exchanger of heat exchange unit, the latter then is a plate, the plate fin, medium turnover tube connector welds together forms the sweating heat crosspoint, assemble with heat exchange unit or plate then, stack mutually, form the MEDIA FLOW chamber, with the elastomeric pad sealing, form dismountable plate-fin heat exchanger between sweating heat crosspoint or the plate; There is certain elasticity at the fin plate heat exchange interface and the plate interface of plate-fin heat exchanger, curvature can change under certain pressure, the cavity of forming can the elasticity of bulk expand under big pressure, elasticity of bulk contraction distortion under less pressure, its normal pressure section structure of cavity can be provided with heat-insulation layer for other shape except that positive circular arc on scale removal plate-fin heat exchanger housing.
2, plate fin according to claim 1, it is characterized in that: the plate fin can be forms such as plain fin, serrated fin, corrugated fin.
3, plate according to claim 1 is characterized in that: plate can be flat board or can be on the plate there to be and the different groove of plate fin flow path groove direction punching out.
4, the compound deformable pressure-bearing of plate fin according to claim 1 cavity volume, it is characterized in that: the compound deformable pressure-bearing of plate fin cavity volume is that sheet plate, plate fin, medium turnover tube connector pass through welding forming, it is the complex that has the forming tube cavity configuration, sealing each other between the runner of tube chamber, the heat exchange interface of fin plate has certain elasticity, can under big pressure, the elasticity of bulk expand, elasticity of bulk contraction distortion under less pressure, its normal pressure structure is other shape except that positive circular arc.
5, dismountable plate-fin heat exchanger according to claim 1, it is characterized in that: on the plate of dismountable plate-fin heat exchanger or the plate fin flow-disturbing fin can be installed, flow-disturbing fin correspondence is installed on the trench place of adjacent fins plate, can be useful on the pore of cross-under fastening bolt on the flow-disturbing fin, the pore of adjacent panels fin heat exchanger fastening bolt is on same straight line, the flow-disturbing fin is supported on the trench place of adjacent respective panels fin, and the flow-disturbing fin is concavo-convex or wavy; Plate and plate fin edge can be useful on the wave groove edge of positioning seals elastomeric pad.
6, demountable panel fin heat exchanger according to claim 1, it is characterized in that: stack mutually by seal between plate chamber and the plate chamber, form water cavity, the flow-disturbing fin is supported between plate chamber and the plate chamber, and the end plate that is fixed and clamped by independent setting compresses seal combination with bolt.
7, dismountable plate-fin heat exchanger according to claim 1, it is characterized in that: stack mutually by seal between the plate chamber of dismountable plate-fin heat exchanger and the plate chamber, form and walk water cavity, the flow-disturbing fin is supported between plate chamber and the plate chamber, be installed with clamping screw within the guide hole, the lock sealing bolt compresses seal combination by the rigidity pressure-bearing pad frame that compression end covers with each heat exchange cavity.
8, sealing fastening assembly according to claim 1, it is characterized in that: the sealing fastening assembly comprises bolt, has the sealed loop-pad elastomeric pad of certain thickness conventional rubber or the manufacturing of other elastomeric material, or circle pad elastomeric pad, the rigidity pressure-bearing pad frame of the rubber of middle built-in support or the manufacturing of other elastomeric material.
9, heat exchange unit according to claim 1, it is characterized in that: the deformation pressure-bearing cavity volume of heat exchange unit plate, plate fin, the compound full welded seal moulding of plate, pick out by medium turnover tube connector, be connected in series, be connected in parallel, or series, parallel connects, form different heat exchange runners, can form the heat exchange unit of two media at least by being welded to connect entirely; All-welded finned heat exchanger can pass through the bolt fastening assembly, and bolt is formed a heat exchanger that stacks mutually, and the two media of every group of heat exchanger can establish one's own system by serial or parallel connection, and the heat transferring medium that feeds in heat exchanger can be at least two kinds.
10, heat exchange unit according to claim 1, it is characterized in that: heat exchange unit is plate, plate fin, medium turnover tube connector welds together becomes the sweating heat crosspoint, be non-removable, heat exchange unit, pad, plate assemble by securing member, stack sealing mutually, form the MEDIA FLOW chamber, form dismountable plate-fin heat exchanger; Medium between the heat exchange unit can pass in and out tube connector by medium and be connected in series, is connected in parallel or for series, parallel connects, form different heat exchange runners.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031242146A CN100489430C (en) | 2003-05-02 | 2003-05-02 | Self-descaling plate-fin heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031242146A CN100489430C (en) | 2003-05-02 | 2003-05-02 | Self-descaling plate-fin heat exchanger |
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| CN1542395A true CN1542395A (en) | 2004-11-03 |
| CN100489430C CN100489430C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031242146A Expired - Fee Related CN100489430C (en) | 2003-05-02 | 2003-05-02 | Self-descaling plate-fin heat exchanger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579144A (en) * | 2013-11-06 | 2014-02-12 | 国家电网公司 | Module flow balancing water channel used for direct current converter valve |
| CN107764081A (en) * | 2017-10-20 | 2018-03-06 | 罗良宜 | A kind of self-propelled plate heat exchanger |
| CN116680838A (en) * | 2023-07-27 | 2023-09-01 | 东莞市鹏锦机械科技有限公司 | Heat transfer calculation method of plate-fin heat exchanger |
-
2003
- 2003-05-02 CN CNB031242146A patent/CN100489430C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579144A (en) * | 2013-11-06 | 2014-02-12 | 国家电网公司 | Module flow balancing water channel used for direct current converter valve |
| CN107764081A (en) * | 2017-10-20 | 2018-03-06 | 罗良宜 | A kind of self-propelled plate heat exchanger |
| CN116680838A (en) * | 2023-07-27 | 2023-09-01 | 东莞市鹏锦机械科技有限公司 | Heat transfer calculation method of plate-fin heat exchanger |
| CN116680838B (en) * | 2023-07-27 | 2024-04-26 | 东莞市鹏锦机械科技有限公司 | Heat transfer calculation method of plate-fin heat exchanger |
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| CN100489430C (en) | 2009-05-20 |
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Owner name: BEIJING HUANNENG HAICHEN SCIENCE CO., LTD.; APPLI Free format text: FORMER OWNER: XU BAOAN Effective date: 20081024 |
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Effective date of registration: 20081024 Address after: Room 2, unit 33, 302 Dong Dong Dong, Beijing, Shijingshan District, China: 100041 Applicant after: Beijing annex Hai Chen Technology Co., Ltd. Co-applicant after: Xu Baoan Address before: Room 2, unit 33, 302 Dong Dong Dong, Beijing, Shijingshan District, China: 100041 Applicant before: Xu Baoan |
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Granted publication date: 20090520 Termination date: 20120502 |