CN206146261U - Novel heat exchanger core body - Google Patents
Novel heat exchanger core body Download PDFInfo
- Publication number
- CN206146261U CN206146261U CN201621024114.0U CN201621024114U CN206146261U CN 206146261 U CN206146261 U CN 206146261U CN 201621024114 U CN201621024114 U CN 201621024114U CN 206146261 U CN206146261 U CN 206146261U
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- plate
- etching
- heat exchanger
- molding
- runner
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Abstract
The utility model discloses a novel heat exchanger core body belongs to machine design technical field. This heat exchanger core body includes two apron, etching slab, shaping slab and baffles, shaping slab and baffle constitute a constitutional unit, constitutional unit and etching slab be superpose in turn between two apron, the non - of etching slab is lost facet and is connect relatively with the shaping slab, the baffle that loses facet and adjacent constitutional unit of etching slab docks mutually, all be equipped with the baffle between apron and the etching slab, all be equipped with the baffle between apron and the shaping slab, apron, etching slab, shaping slab and baffle are processed into an organic whole. This practical novel heat exchanger core body has mixed microchannel heat exchanger and plate heat exchanger's characteristics, can satisfy the use operating mode that the working medium cleanliness is not high, the cooling process of the marine work platform's of specially adapted the natural gas.
Description
Technical field
This utility model is related to a kind of new type heat exchanger core body, belongs to heat exchange design field.
Background technology
At present, micro-channel heat exchanger has been widely applied to the industries such as ship, automobile, air-conditioning, micro-channel heat exchanger due to
Its small volume, important new direction that is lightweight, having become current heat exchanger research opening, and how preferably to realize
Multiple fluid heat transfer problem is then the emphasis of current research and development.
The fluid working substance cleannes for being generally used for heat exchanger differ, and when using cleannes not high working medium, often go out
Now because of fouling in runner, or working medium endoparticle thing diameter it is excessive and block situation occur, reduce the service life of heat exchanger.
Utility model content
This utility model provides a kind of new type heat exchanger core body, and the technical scheme of employing is as follows：
The purpose of this utility model is to provide a kind of new type heat exchanger core body, including two cover plates 1, etching plate 3, into
Template piece 4 and dividing plate 5；The molding plate 4 and dividing plate 5 constitute a construction unit A；The construction unit A and etching plate 3
It is alternately superimposed between two cover plates 1；The non-etched face of the etching plate 3 is relative with molding plate 4 to be connect；The etching plate
3 etching face is relative with the dividing plate 5 of adjacent structural units A to be connect；Dividing plate 5 is equipped between the cover plate 1 and etching plate 3；Institute
State and between cover plate 1 and molding plate 4, be equipped with dividing plate 5；The cover plate 1, etching plate 3, molding plate 4 and dividing plate 5 are processed into
Integrally.
Preferably, the runner of the etching plate 3 and molding plate 4 is straight channel or tortuous flow path.
It is highly preferred that the straight channel and tortuous flow path are the passage of parallel channels or fin composition.
It is highly preferred that the runner of the etching plate 3 and molding plate 4 includes heat exchange runner and honeycomb duct；It is described to lead
Runner connects heat exchange runner and extends to the edge of plate；The heat exchange runner and honeycomb duct constitute linear, zigzag or Z-shaped
Shape runner.
Preferably, the fluid inlet and outlet of the etching plate 3 is arranged along the surrounding any direction of plate；The molding plate
4 fluid inlet and outlet is arranged along the surrounding any direction of plate；The fluid inlet and outlet and molding plate 4 of the etching plate 3
Fluid inlet and outlet mutually staggers.
Preferably, structure of the section of the molding plate 4 in multiple " several " font linear array.
Preferably, each described 4 two ends of molding plate is provided with two baffle plates 2.
Preferably, the new type heat exchanger core body, including two cover plates 1, baffle plate 2, etching plate 3, molding plate 4 and every
Plate 5；The molding plate 4 and dividing plate 5 constitute a construction unit A；The construction unit A is with etching plate 3 in two cover plates 1
Between be alternately superimposed on；The non-etched face of the etching plate 3 is relative with molding plate 4 to be connect；It is described etching plate 3 etching face with
The dividing plate 5 of adjacent structural units A is relative to be connect；Each described 4 two ends of molding plate is provided with two baffle plates 2；The cover plate 1 and etching
Dividing plate 5 is equipped between plate 3；Dividing plate 5 is equipped between the cover plate 1 and molding plate 4；The cover plate 1, baffle plate 2, etching
Plate 3, molding plate 4 and dividing plate 5 are processed into cuboid；The molding plate 4 is rectangle, and the import and export of its runner are arranged on
On rectangular long side；The etching plate 3 is rectangle, and the import and export of its runner are arranged on rectangular broadside.
Preferably, the new type heat exchanger core body, including two cover plates 1, baffle plate 2, etching plate 3, molding plate 4 and every
Plate 5；The molding plate 4 and dividing plate 5 constitute a construction unit A；The construction unit A is with etching plate 3 in two cover plates 1
Between be alternately superimposed on；The non-etched face of the etching plate 3 is relative with molding plate 4 to be connect；It is described etching plate 3 etching face with
The dividing plate 5 of adjacent structural units A is relative to be connect；Each described 4 two ends of molding plate is provided with two baffle plates 2；The cover plate 1 and etching
Dividing plate 5 is equipped between plate 3；Dividing plate 5 is equipped between the cover plate 1 and molding plate 4；The cover plate 1, baffle plate 2, etching
Plate 3, molding plate 4 and dividing plate 5 are processed into cuboid；The molding plate 4 is rectangle, and the import and export of its runner are arranged on
On rectangular broadside；The etching plate 3 is rectangle, and the import and export of its runner are arranged on rectangular long side.
Preferably, the new type heat exchanger core body, including two cover plates 1, baffle plate 2, etching plate 3, molding plate 4 and every
Plate 5；The molding plate 4 and dividing plate 5 constitute a construction unit A；The construction unit A is with etching plate 3 in two cover plates 1
Between be alternately superimposed on；The non-etched face of the etching plate 3 is relative with molding plate 4 to be connect；It is described etching plate 3 etching face with
The dividing plate 5 of adjacent structural units A is relative to be connect；Each described 4 two ends of molding plate is provided with two baffle plates 2；The cover plate 1 and etching
Dividing plate 5 is equipped between plate 3；Dividing plate 5 is equipped between the cover plate 1 and molding plate 4；The cover plate 1, baffle plate 2, etching
Plate 3, molding plate 4 and dividing plate 5 are processed into square；The square etching plate 3 of the molding plate 4 is in pros
Shape；The import and export of the runner of the etching plate 3 and molding plate 4 are arranged in foursquare different edge.
It is to process multi-form by way of chemical etching on plate that plate 3 is etched described in this utility model
Runner, runner can be straight channel, or tortuous flow path, and the runner import and export for etching plate 3 can pass through honeycomb duct position
In the optional position of the surrounding of plate, etch plate 3 and be applied to the higher working medium of fluid cleaning degree, gone out by etching and processing
Channel size is less, but refrigerant flow rate is relatively fast, and heat transfer effect is very good, and the voltage endurance capability for etching plate 3 is strong, but be easy to because
Fouling in runner, or working medium endoparticle thing diameter is excessive and blocks.
In this utility model, runner is straight channel or tortuous flow path, refers to that runner moves towards trend, can be linear, son
Shape or zigzag；The passage that concrete runner is generally parallel to each other, or linear, zigzag, shaped form, or by wing
The straight line or Curved runner of piece composition, or the flow channel shape that other skilled in the art can be obtained by routine variations.
In this utility model, lateral (section) of molding plate is the structure of multiple " several " sub- shape linear array side by side, runner
Can be straight channel, or tortuous flow path, it is adaptable to the relatively low working medium of fluid cleaning degree, the structure of " several " sub- shape can be with
Pass through the bulky grain in fluid, both are with the use of can reduce cleaner to greatest extent and verify existing in heat transferring medium
Dependence in cleannes, the voltage endurance capability of molding plate 4 are relatively low, but cocurrent flow directly can be set according to actual needs
It is fixed, generally, will not be excessive and block because of fouling or working medium endoparticle thing diameter.
This utility model median septum 5 is located between etching plate 3 and molding plate 4, can avoid two or more fluids
Mixed flow.
In the present invention, the shape of plate can be arranged to arbitrary shape, such as rectangle according to practical situation, square, circular
Deng.
This utility model heat exchanger core body feature is：
1) etch plate 3 and be applied to the higher working medium of fluid cleaning degree, the channel size gone out by etching and processing is less,
But refrigerant flow rate is relatively fast, heat transfer effect is very good, and molding plate 4 is applied to the relatively low working medium of fluid cleaning degree, " several "
The structure of sub- shape passes through can the bulky grain in fluid, and both are with the use of can reduce to greatest extent cleaning working medium
For dependence of the heat transferring medium in cleannes.
2) although the voltage endurance capability for etching plate 3 is strong, it is easy to because of fouling in runner, or working medium endoparticle thing diameter is excessive
And block, and the voltage endurance capability of dieplate piece 4 is relatively low, but through-flow diameter can be set according to actual needs, this Shen
Please heat exchanger core body will not be excessive and block because of fouling or working medium endoparticle thing diameter, be particularly well-suited to the day of offshore work platform
The refrigerating work procedure of right gas.
3) runner for etching plate 3 and the formation of molding plate 4 can be straight channel, or tortuous flow path.
4) runner for etching plate 3 imports and exports the optional position of the surrounding that plate can be located at by honeycomb duct；
5) the different multiple fluids for importing and exporting position according to runner countercurrently can exchange heat in (following current), it is also possible to which cross-flow exchanges heat；
6) flow passage structure of the heat transfer characteristic according to different fluid, molding plate 4 and etching plate 3 can be designed to arbitrarily
Size, to meet heat exchange demand；
7) generally etching plate is used for high temperature fluid, recommends arranging dieplate piece rather than etched plate with cover plate junction
Piece, this kind of structure can avoid heat exchanger core body cover plate temperature too high.
This utility model beneficial effect：
The advantage of this utility model heat exchanger core body is the characteristics of having mixed micro-channel heat exchanger and plate type heat exchanger,
The not high applying working condition of working medium cleannes can be met.Can be countercurrently (suitable according to the different multiple fluids that runner imports and exports position
Stream) heat exchange, it is also possible to cross-flow exchanges heat；Can according to the flow passage structure of the heat transfer characteristic of different fluid, molding plate and etching plate
To be designed to, arbitrary dimension, to meet heat exchange demand, this kind of heat exchanger core body is especially used in the natural gas of offshore work platform
Refrigerating work procedure.
Description of the drawings
Fig. 1 is this utility model structural representation；
(1, cover plate；2, baffle plate；3, etch plate；4, molding plate；5, dividing plate).
Fig. 2 is molding sheet structure schematic diagram.
Fig. 3 is etching plate linear structure schematic diagram.
Fig. 4 is etching plate zigzag structural representation.
Fig. 5 is etching plate zigzag structural representation.
Fig. 6 is etching plate zigzag structural representation.
Fig. 7 is etching plate fin structure close-up schematic view.
Specific embodiment
This utility model is described further with reference to specific embodiment, following examples will be helpful to this area
Technical staff further understands this utility model, but does not limit this utility model in any form.
In description of the present utility model, it should be noted that term " " center ", " longitudinal direction ", " horizontal ", " on ", D score,
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " top ", " bottom ", " interior ", " outward " and " endways " is based on attached
Orientation or position relationship shown in figure, is for only for ease of description this utility model and simplifies description, rather than indicate or imply
The device or element of indication must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The restriction of utility model.
In description of the present utility model, it should be noted that unless otherwise expressly provided and limit, term " installation ",
" being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or integratedly connect
Connect；Can be directly connected to, can also be indirectly connected with by intermediary, can be the connection of two components interiors.For
For one of ordinary skill in the art, concrete meaning of the above-mentioned term in this utility model can be understood with concrete condition.
Additionally, in description of the present utility model, unless otherwise stated, " multiple ", " multigroup ", " many " are meant that two
Individual or two or more.
Embodiment 1：
With reference to Fig. 1-7, the present embodiment provides a kind of new type heat exchanger core body, including two cover plates 1, baffle plate 2, etching plates
3rd, molding plate 4 and dividing plate 5；The molding plate 4 and dividing plate 5 constitute a construction unit A；Construction unit A and etching plate 3
It is alternately superimposed between two cover plates 1；The non-etched face of etching plate 3 is relative with molding plate 4 to be connect；The etching of etching plate 3
Face is relative with the dividing plate 5 of adjacent structural units A to be connect；Each described 4 two ends of molding plate is provided with two baffle plates 2；Cover plate 1 and etching
Dividing plate 5 is equipped between plate 3；Dividing plate 5 is equipped between cover plate 1 and molding plate 4；Cover plate 1, baffle plate 2, etching plate 3, into
Template piece 4 and dividing plate 5 are processed into cuboid；Molding plate 4 is rectangle, and the import and export of its runner are arranged on rectangular long side
On；Etching plate 3 is rectangle, and the import and export of its runner are arranged on rectangular broadside.
Structure (as shown in Figure 2) of the section of molding plate 4 in multiple " several " font linear array.
As shown in fig. 3 to 7, the runner for etching plate 3 and molding plate 4 is straight channel or tortuous flow path.Straight channel and complications
Runner is the passage of parallel channels or fin composition；The runner of etching plate 3 and molding plate 4 includes heat exchange runner and leads
Runner；Honeycomb duct connects heat exchange runner and extends to the edge of plate；Heat exchange runner and honeycomb duct constitute linear, zigzag or
Zigzag runner.
Embodiment 2
The present embodiment with the difference of embodiment 1 is：Cover plate 1, baffle plate 2, etching plate 3, molding plate 4 and dividing plate 5 add
Work is into cuboid；Molding plate 4 is rectangle, and the import and export of its runner are arranged on rectangular broadside；Etching plate 3 is in length
Square, the import and export of its runner are arranged on rectangular long side.
Embodiment 3
The present embodiment with the difference of embodiment 1 is：Cover plate 1, baffle plate 2, etching plate 3, molding plate 4 and dividing plate 5 add
Work is into square；The square etching plate 3 of the molding plate 4 is square；The etching plate 3 and molding plate
The import and export of 4 runner are arranged in foursquare different edge.
In the present embodiment when cover plate is with molding sheet contacts, dividing plate can be added in the middle of the two；When cover plate and etching
When the etching face of plate is contacted, dividing plate can be added in the middle of the two；When cover plate is contacted with the non-etched face of etching plate,
Can select to add dividing plate in the middle of the two.
It is the runner for processing multi-form by way of chemical etching on plate that plate 3 is etched in the present embodiment,
Runner can be straight channel, or tortuous flow path, and the runner for etching plate 3 is imported and exported and can be located at plate by honeycomb duct
Surrounding optional position, etch plate 3 and be applied to the higher working medium of fluid cleaning degree, the runner chi gone out by etching and processing
It is very little less, but refrigerant flow rate is relatively fast, and heat transfer effect is very good, and the voltage endurance capability for etching plate 3 is strong, but is easy to because in runner
Fouling, or working medium endoparticle thing diameter is excessive and blocks.
In the present embodiment, runner is straight channel or tortuous flow path, refers to that runner moves towards trend, can be linear, sub- shape
Or zigzag；The passage that concrete runner is generally parallel to each other, or linear, zigzag, shaped form, or by fin
The straight line or Curved runner of composition, or the flow channel shape that other skilled in the art can be obtained by routine variations.
In the present embodiment, lateral (section) of molding plate is the structure of multiple " several " sub- shape linear array side by side, and runner can
Being straight channel, or tortuous flow path, it is adaptable to which the relatively low working medium of fluid cleaning degree, the structure of " several " sub- shape can make
Bulky grain in fluid is passed through, and both verify in heat transferring medium clear with the use of can reduce cleaner to greatest extent
Dependence in cleanliness, the voltage endurance capability of molding plate 4 are relatively low, but cocurrent flow directly can be set according to actual needs,
Generally, will not be excessive and block because of fouling or working medium endoparticle thing diameter.
The present embodiment median septum 5 can avoid mixed flow between fluid.
This utility model heat exchanger core body feature is：
1st, etch plate 3 and be applied to the higher working medium of fluid cleaning degree, the channel size gone out by etching and processing is less,
But refrigerant flow rate is relatively fast, heat transfer effect is very good, and molding plate 4 is applied to the relatively low working medium of fluid cleaning degree, " several "
The structure of sub- shape passes through can the bulky grain in fluid, and both are with the use of can reduce to greatest extent cleaning working medium
For dependence of the heat transferring medium in cleannes.
Although the voltage endurance capability for the 2, etching plate 3 is strong, it is easy to because of fouling in runner, or working medium endoparticle thing diameter is excessive
And block, and the voltage endurance capability of dieplate piece 4 is relatively low, but through-flow diameter can be set according to actual needs, this Shen
Please heat exchanger core body will not be excessive and block because of fouling or working medium endoparticle thing diameter, be particularly well-suited to the day of offshore work platform
The refrigerating work procedure of right gas.
3rd, the runner for etching plate 3 and the formation of molding plate 4 can be straight channel, or tortuous flow path.
4th, the runner for etching plate 3 imports and exports the optional position of the surrounding that plate can be located at by honeycomb duct；
5th, the different multiple fluids for importing and exporting position according to runner countercurrently can exchange heat in (following current), it is also possible to which cross-flow exchanges heat；
The flow passage structure of the 6th, heat transfer characteristic according to different fluid, molding plate 4 and etching plate 3 can be designed to arbitrarily
Size, to meet heat exchange demand；
7th, generally etching plate is used for high temperature fluid, recommends arranging dieplate piece rather than etched plate with cover plate junction
Piece, this kind of structure can avoid heat exchanger core body cover plate temperature too high.
The advantage of this utility model heat exchanger core body is the characteristics of having mixed micro-channel heat exchanger and plate type heat exchanger,
The not high applying working condition of working medium cleannes can be met.Can be countercurrently (suitable according to the different multiple fluids that runner imports and exports position
Stream) heat exchange, it is also possible to cross-flow exchanges heat；Can according to the flow passage structure of the heat transfer characteristic of different fluid, molding plate and etching plate
To be designed to, arbitrary dimension, to meet heat exchange demand, this kind of heat exchanger core body is especially used in the natural gas of offshore work platform
Refrigerating work procedure.
The schematic specific embodiment of this utility model is the foregoing is only, and is not used to limit model of the present utility model
Enclose.Any those skilled in the art, on the premise of without departing from design of the present utility model and principle, done equivalent becomes
Change and modification, the scope of this utility model protection all should be belonged to.
Claims (10)
1. a kind of new type heat exchanger core body, it is characterised in that including two cover plates (1), etching plate (3), molding plate (4) and
Dividing plate (5)；The molding plate (4) and dividing plate (5) constitute a construction unit A；The construction unit A and etching plate (3)
It is alternately superimposed between two cover plates (1)；The non-etched face of etching plate (3) is relative with molding plate (4) to be connect；The erosion
The etching face of mechanical (3) is relative with the dividing plate (5) of adjacent structural units A to be connect；Between the cover plate (1) and etching plate (3)
It is equipped with dividing plate (5)；Dividing plate (5) is equipped between the cover plate (1) and molding plate (4)；The cover plate (1), etching plate
(3), molding plate (4) and dividing plate (5) processing are integral.
2. new type heat exchanger core body according to claim 1, it is characterised in that the etching plate (3) and molding plate (4)
Runner be straight channel or tortuous flow path.
3. new type heat exchanger core body according to claim 2, it is characterised in that the straight channel is parallel with tortuous flow path
The passage of passage or fin composition.
4. the new type heat exchanger core body according to Claims 2 or 3, it is characterised in that the etching plate (3) and molding plate
(4) runner includes heat exchange runner and honeycomb duct；The honeycomb duct connects heat exchange runner and extends to the edge of plate；It is described
Heat exchange runner and honeycomb duct constitute linear, zigzag or zigzag runner.
5. new type heat exchanger core body according to claim 1, it is characterised in that the fluid inlet and outlet of the etching plate (3)
Surrounding any direction along plate is arranged；The fluid inlet and outlet of the molding plate (4) is arranged along the surrounding any direction of plate；
The fluid inlet and outlet of etching plate (3) and the fluid inlet and outlet of molding plate (4) mutually stagger.
6. new type heat exchanger core body according to claim 1, it is characterised in that the section of the molding plate (4) is in multiple
The structure of " several " font linear array.
7. the new type heat exchanger core body according to claim 1 or 6, it is characterised in that each described molding plate (4) two ends sets
There are two baffle plates (2).
8. new type heat exchanger core body according to claim 1, it is characterised in that also including baffle plate (2)；Each described dieplate
Piece (4) two ends are provided with two baffle plates (2)；The cover plate (1), baffle plate (2), etching plate (3), molding plate (4) and dividing plate (5)
It is processed into cuboid；The molding plate (4) is rectangle, and the import and export of its runner are arranged on rectangular long side；It is described
Etching plate (3) is rectangle, and the import and export of its runner are arranged on rectangular broadside.
9. new type heat exchanger core body according to claim 1, it is characterised in that also including baffle plate (2)；Each described dieplate
Piece (4) two ends are provided with two baffle plates (2)；The cover plate (1), baffle plate (2), etching plate (3), molding plate (4) and dividing plate (5)
It is processed into cuboid；The molding plate (4) is rectangle, and the import and export of its runner are arranged on rectangular broadside；It is described
Etching plate (3) is rectangle, and the import and export of its runner are arranged on rectangular long side.
10. new type heat exchanger core body according to claim 1, it is characterised in that also including baffle plate (2)；Each described molding
Plate (4) two ends are provided with two baffle plates (2)；The cover plate (1), baffle plate (2), etching plate (3), molding plate (4) and dividing plate
(5) it is processed into square；Square etching plate (3) of the molding plate (4) is square；The etching plate
(3) it is arranged in foursquare different edge with the import and export of runner of molding plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024114.0U CN206146261U (en) | 2016-08-31 | 2016-08-31 | Novel heat exchanger core body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024114.0U CN206146261U (en) | 2016-08-31 | 2016-08-31 | Novel heat exchanger core body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206146261U true CN206146261U (en) | 2017-05-03 |
Family
ID=58619210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621024114.0U Expired - Fee Related CN206146261U (en) | 2016-08-31 | 2016-08-31 | Novel heat exchanger core body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206146261U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782181A (en) * | 2016-08-31 | 2018-03-09 | 航天海鹰(哈尔滨)钛业有限公司 | A kind of new type heat exchanger core |
| CN107816905A (en) * | 2017-09-25 | 2018-03-20 | 西安热工研究院有限公司 | A kind of high efficiency ultracritical carbon dioxide precooling device of circulating cooling water direct heat-exchange |
| CN109632272A (en) * | 2018-11-23 | 2019-04-16 | 合肥通用机械研究院有限公司 | A kind of PCHE core structure of heat exchanger design experiment model machine |
-
2016
- 2016-08-31 CN CN201621024114.0U patent/CN206146261U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782181A (en) * | 2016-08-31 | 2018-03-09 | 航天海鹰(哈尔滨)钛业有限公司 | A kind of new type heat exchanger core |
| CN107816905A (en) * | 2017-09-25 | 2018-03-20 | 西安热工研究院有限公司 | A kind of high efficiency ultracritical carbon dioxide precooling device of circulating cooling water direct heat-exchange |
| CN109632272A (en) * | 2018-11-23 | 2019-04-16 | 合肥通用机械研究院有限公司 | A kind of PCHE core structure of heat exchanger design experiment model machine |
| CN109632272B (en) * | 2018-11-23 | 2020-07-07 | 合肥通用机械研究院有限公司 | PCHE heat exchanger core structure design test model machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20210831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |