CN107192284B - Compact heat exchange device - Google Patents
Compact heat exchange device Download PDFInfo
- Publication number
- CN107192284B CN107192284B CN201710510413.8A CN201710510413A CN107192284B CN 107192284 B CN107192284 B CN 107192284B CN 201710510413 A CN201710510413 A CN 201710510413A CN 107192284 B CN107192284 B CN 107192284B
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- China
- Prior art keywords
- heat exchange
- exchange plate
- channel
- cold fluid
- plate
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- 239000012530 fluid Substances 0.000 claims abstract description 172
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 7
- 238000009792 diffusion process Methods 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A compact heat exchange device is composed of a hot fluid outlet channel, a cold fluid inlet channel, a heat exchange plate set, a cold fluid outlet channel, a hot fluid inlet channel, a heat exchanger shell and a partition plate. The heat exchange units in the heat exchange plate group are integrally formed by diffusion welding, and the formed heat exchange units consist of a cold fluid channel, a hot fluid channel and a heat conducting metal substrate. The cold fluid channel in the heat exchange unit forms surrounding or semi-surrounding potential for the hot fluid channel, so that the heat transfer area for transferring heat to the outside through the metal plate by the hot fluid is reduced, and the higher heat transfer efficiency of the heat exchanger can be realized under the condition of relatively larger heat transfer area.
Description
Technical Field
The invention belongs to the field of heat transfer, and relates to a compact heat exchange device.
Background
The heat exchanger has wide application and various kinds and plays an important role in various industries. With the development of science and technology, some emerging fields or application require heat exchangers with higher heat transfer efficiency, smaller volume or weight, and long-term stable operation under high temperature and high pressure conditions. The conventional shell-and-tube heat exchanger has low heat exchange efficiency and huge volume, and thus, the application range is limited. The plate heat exchanger has high heat exchange efficiency, compact structure, light weight, strong adaptability, more and more forms and wider application. However, the conventional plate heat exchanger is susceptible to failure due to deformation, corrosion, blockage and the like under high temperature and high pressure conditions due to the defects of the manufacturing process.
The printed circuit board heat exchanger proposed by Heatric company in the united kingdom is a plate heat exchanger capable of withstanding relatively high fluid temperatures and pressures. The printed circuit board heat exchanger consists of a plurality of heat exchange plates, and each heat exchange plate is provided with a plurality of fluid channels carved by a chemical etching method. And stacking a plurality of heat exchange plates, integrally forming the heat exchange plates in a diffusion welding mode, and mutually penetrating two adjacent heat exchange plates by 1-2 mm. Because the integrally formed heat exchanger materials are the same, the change rule of the thermal expansion coefficient of each part of the heat exchanger along with the temperature is the same, and therefore, the heat exchanger can bear higher temperature and pressure.
In a printed circuit board heat exchanger, only one type of hot fluid or cold fluid generally passes through all channels of each heat exchange plate, and the hot fluid and the cold fluid respectively flow in the channels of two adjacent heat exchange plates. In the heat exchange process, heat of the hot fluid is transferred to the metal plate, and the heat is transferred to the cold fluid after the temperature of the metal plate is increased. At the same time, the metal plate also dissipates heat to the peripheral boundary. When the number of layers of the heat exchange plate is large, the heat emitted from the metal plate to the outside is smaller than the total heat transfer amount, and the heat dissipation has little influence on the heat transfer efficiency. However, when the number of heat exchange plates is small, the heat dissipated from the metal plates to the outside is not negligible compared with the total heat transfer amount, and the heat dissipation can obviously reduce the heat transfer efficiency of the heat exchanger.
Disclosure of Invention
The invention aims to provide a compact heat exchange device, wherein cold fluid channels of the heat exchange device are arranged on the periphery of hot fluid channels, so that the surrounding potential of cold fluid to hot fluid is realized, the heat transfer area of the hot fluid for transferring heat to the outside through a metal plate is reduced, and the higher heat transfer efficiency of a printed circuit board heat exchanger is realized under the condition that the heat transfer area is relatively larger.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a compact heat exchange device, comprising a heat exchanger shell, a hot fluid outlet channel, a hot fluid inlet channel, a cold fluid outlet channel and a heat exchange plate set, wherein the hot fluid outlet channel, the hot fluid inlet channel, the cold fluid outlet channel and the heat exchange plate set are arranged in the heat exchanger shell;
the heat exchange plate group comprises a plurality of heat exchange units, each heat exchange unit comprises a cold fluid channel and a hot fluid channel arranged in the cold fluid channel, a heat conduction metal substrate is arranged between the cold fluid channel and the hot fluid channel, one end of the heat exchange plate group is provided with a cold fluid inlet channel communicated with the cold fluid channel and a hot fluid outlet channel communicated with the hot fluid channel, and the other end of the heat exchange plate group is provided with a cold fluid outlet channel communicated with the cold fluid channel and a hot fluid inlet channel communicated with the hot fluid channel.
The invention is further improved in that the two sides of the heat exchange plate group are provided with the partition plates.
The invention is further improved in that the cold fluid channel and the hot fluid channel are arranged in parallel.
The invention is further improved in that the cold fluid channel is a straight channel, a zigzag channel or an S-shaped channel.
The invention is further improved in that the heat exchange unit further comprises an upper inner heat exchange plate, a lower inner heat exchange plate, an upper outer heat exchange plate and a lower outer heat exchange plate; the upper inner heat exchange plate and the lower inner heat exchange plate are identical in shape and are symmetrically arranged, and the upper outer heat exchange plate and the lower outer heat exchange plate are identical in shape and are symmetrically arranged; the heat exchange unit is prepared by the following method: holes with the same size are formed in the upper outer heat exchange plate and the lower outer heat exchange plate, the upper inner heat exchange plate and the lower inner heat exchange plate are arranged in the holes, a cavity formed between the upper inner heat exchange plate and the lower inner heat exchange plate is a hot fluid channel, and a cavity formed between the upper inner heat exchange plate and the upper outer heat exchange plate and between the lower inner heat exchange plate and the lower outer heat exchange plate is a cold fluid channel.
A further development of the invention is that one end of several cold fluid channels is connected to the cold fluid flow space and that on one side of the cold fluid flow space an inlet or outlet header is arranged.
The invention is further improved in that each heat exchange unit is integrally formed by overlapping an upper outer heat exchange plate, a lower outer heat exchange plate, an upper inner heat exchange plate and a lower inner heat exchange plate in a diffusion welding mode.
The invention is further improved in that the lengths of the upper inner heat exchange plate and the lower inner heat exchange plate in the fluid flow direction are larger than those of the upper outer heat exchange plate and the lower outer heat exchange plate.
The invention is further improved in that the shapes of the upper outer heat exchange plate, the lower outer heat exchange plate, the upper inner heat exchange plate and the lower inner heat exchange plate are manufactured in a pressing or pouring mode.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the hot fluid channel is arranged in the cold fluid channel, the cold fluid channel is arranged at the periphery of the hot fluid channel, and the heat conducting metal substrate is arranged between the cold fluid channel and the hot fluid channel, so that the surrounding potential of the cold fluid to the hot fluid is realized, the heat transfer area of the hot fluid for transferring heat to the outside through the metal plate is reduced, the heat dissipation capacity of the hot fluid for the outside through the metal plate is reduced, the higher heat transfer efficiency of the heat exchange device is realized under the condition that the number of layers of the heat exchanger is small or the heat dissipation area is relatively large, and the problem of low heat transfer efficiency of the heat exchanger when the number of layers of the heat exchange plate is small in the prior art is solved. The invention can be adapted to the situation where the cold side and hot fluid flow differ significantly, since it is easy to vary the cross-sectional area of the cold fluid or hot fluid channel in the invention.
Further, the two sides of the heat exchange plate group are provided with the partition plates for arranging the hot fluid inlets, so that the arrangement of the hot fluid inlets and the cold fluid inlets is facilitated.
Further, since the cold and hot fluids flow in parallel, in order to organize respective inflow and outflow of the cold and hot fluids, the lengths of the upper inner heat exchange plate and the lower inner heat exchange plate in the fluid flow direction are greater than those of the upper outer heat exchange plate and the lower outer heat exchange plate so as to leave a cold fluid flow space.
Further, an inlet or outlet header is provided on one side of the cold fluid flow space to facilitate distribution of the incoming or outgoing fluid.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic cross-sectional structure of a heat exchanger plate package.
Fig. 3 is a structural view of the heat exchange plate group.
Fig. 4 is a schematic flow diagram of a hot and cold fluid within a heat exchanger.
Wherein 1 is a hot fluid outlet channel, 2 is a hot fluid channel, 3 is a baffle, 4 is a cold fluid inlet channel, 5 is a shell, 6 is a cold fluid outlet channel, 7 is a cold fluid flow space, 8 is a cold fluid channel, 9 is a hot fluid inlet channel, 10 is a heat exchange plate group, 11 is an upper outer heat exchange plate, 12 is an upper inner heat exchange plate, 13 is a lower inner heat exchange plate, and 14 is a lower outer heat exchange plate.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 and 4, the compact heat exchange device according to the present invention includes a heat exchanger housing 5 and a hot fluid outlet passage 1, a hot fluid inlet passage 9, a cold fluid inlet passage 4, a cold fluid outlet passage 6, and a heat exchange plate group 10 provided in the heat exchanger housing 5; the outside of the heat exchange plate group 10 is provided with a partition plate 3 for arranging a hot fluid inlet; referring to fig. 2 and 3, the heat exchange plate group 10 includes a plurality of heat exchange units, each of which includes a cold fluid channel 8, a hot fluid channel 2, a heat conductive metal substrate, an upper inner heat exchange plate 12, a lower inner heat exchange plate 13, an upper outer heat exchange plate 11, and a lower outer heat exchange plate 14; the upper inner heat exchange plate 12 and the lower inner heat exchange plate 13 are identical in shape and are symmetrically arranged, and the upper outer heat exchange plate 11 and the lower outer heat exchange plate 14 are identical in shape and are symmetrically arranged; one end of the heat exchange plate group 10 is provided with a cold fluid inlet channel 4 communicated with the cold fluid channel 8 and a hot fluid outlet channel 1 communicated with the hot fluid channel 2, and the other end of the heat exchange plate group 10 is provided with a cold fluid outlet channel 6 communicated with the cold fluid channel 8 and a hot fluid inlet channel 9 communicated with the hot fluid channel 2.
The heat exchange unit is prepared by the following method: holes with the same size are formed in the upper outer heat exchange plate 11 and the lower outer heat exchange plate 14, an upper inner heat exchange plate 12 and a lower inner heat exchange plate 13 are arranged in the holes, a cavity formed between the upper inner heat exchange plate 12 and the lower inner heat exchange plate 13 is a hot fluid channel 2, and a cavity formed between the upper inner heat exchange plate 12 and the upper outer heat exchange plate 11 and between the lower inner heat exchange plate 13 and the lower outer heat exchange plate 14 is a cold fluid channel 8.
Referring to fig. 3, when semicircular holes are formed in the upper and lower outer heat exchange plates 11 and 14, since the upper and lower inner heat exchange plates 12 and 13 need to be fixed, a portion of the upper and lower inner heat exchange plates 12 and 13 is protruded out of the cold fluid channels 8 to be fixed, resulting in the cross section of each cold fluid channel 8 being two semi-rings instead of one ring. The upper inner heat exchange plate 12 and the lower inner heat exchange plate 13 are made of heat conducting metal substrates. The cold fluid channel 8 and the hot fluid channel 2 are formed by etching the upper outer heat exchange plate 11, the lower outer heat exchange plate 14, the upper inner heat exchange plate 12 and the lower inner heat exchange plate 13.
The cold fluid channel 8 and the hot fluid channel 2 are arranged in parallel, and the cold fluid channel 8 is a straight channel, a zigzag channel or an S-shaped channel. The cold fluid channel 8 forms an encircling or semi-encircling potential for the hot fluid channel 2.
In the invention, two ends of a plurality of cold fluid channels 8 are provided with a cold fluid flowing space 7; inlet ends of the plurality of cold fluid channels 8 are all communicated with the cold fluid flow space 7, and an inlet header is arranged at one side of the cold fluid flow space 7 for distributing the inflowing fluid; the outlet ends of the several cold fluid channels 8 are each in communication with the cold fluid flow space 7, and on one side of the cold fluid flow space 7 an outlet header is arranged for collecting the outgoing fluid.
Referring to fig. 4, the upper and lower inner heat exchange plates 12 and 13 according to the present invention have a length in the fluid flow direction greater than the upper and lower outer heat exchange plates 11 and 14. The upper outer heat exchange plate 11, the lower outer heat exchange plate 14, the upper inner heat exchange plate 12 and the lower inner heat exchange plate 13 are made by pressing or pouring.
Each heat exchange unit is integrally formed by superposing an upper outer heat exchange plate 11, a lower outer heat exchange plate 14, an upper inner heat exchange plate 12 and a lower inner heat exchange plate 13 in a diffusion welding mode.
Referring to fig. 1 and 4, the specific working procedure of the present invention is as follows:
cold fluid enters the heat exchanger from the cold fluid inlet channel 4, enters the cold fluid channels 8 of each layer through the distribution pipe, and flows out from the cold fluid outlet channel 6 after heat exchange is completed. The hot fluid enters the heat exchanger from the hot fluid inlet channel 9, then flows through the hot fluid channel, and flows out from the hot fluid outlet channel 1 after heat exchange is completed. The cold fluid and the hot fluid are always separated by the upper inner heat exchange plate, the lower inner heat exchange plate and the partition plate 3.
Since the cold and hot fluids flow in parallel, in order to organize the respective inflow and outflow of the cold and hot fluids, the upper inner heat exchange plate 12 and the lower inner heat exchange plate 13 have a length in the fluid flow direction larger than the upper outer heat exchange plate 11 and the lower outer heat exchange plate 14 so as to leave the cold fluid flow space 7. On one side of the cold fluid flow space 7 an inlet or outlet header is arranged for distributing the incoming flow or collecting the outgoing flow. Preferably, the hot fluid channel is formed by fusion of an upper inner heat exchange plate 12 and a lower inner heat exchange plate 13 through diffusion welding, the hot fluid channel 2 is connected with an inlet and outlet header, and the inlet and outlet header is respectively communicated with the hot fluid inlet and outlet channel.
Claims (4)
1. A compact heat exchange device, which is characterized by comprising a heat exchanger shell (5) and a hot fluid outlet channel (1), a hot fluid inlet channel (9), a cold fluid inlet channel (4), a cold fluid outlet channel (6) and a heat exchange plate group (10) which are arranged in the heat exchanger shell (5);
the heat exchange plate group (10) comprises a plurality of heat exchange units, each heat exchange unit comprises a cold fluid channel (8), a hot fluid channel (2) arranged in the cold fluid channel (8), a heat conducting metal substrate is arranged between the cold fluid channel (8) and the hot fluid channel (2), one end of the heat exchange plate group (10) is provided with a cold fluid inlet channel (4) communicated with the cold fluid channel (8) and a hot fluid outlet channel (1) communicated with the hot fluid channel (2), and the other end of the heat exchange plate group (10) is provided with a cold fluid outlet channel (6) communicated with the cold fluid channel (8) and a hot fluid inlet channel (9) communicated with the hot fluid channel (2);
the heat exchange unit also comprises an upper inner heat exchange plate (12), a lower inner heat exchange plate (13), an upper outer heat exchange plate (11) and a lower outer heat exchange plate (14); the upper inner heat exchange plate (12) and the lower inner heat exchange plate (13) are identical in shape and are symmetrically arranged, and the upper outer heat exchange plate (11) and the lower outer heat exchange plate (14) are identical in shape and are symmetrically arranged; the heat exchange unit is prepared by the following method: holes with the same size are formed in the upper outer heat exchange plate (11) and the lower outer heat exchange plate (14), an upper inner heat exchange plate (12) and a lower inner heat exchange plate (13) are arranged in the holes, a cavity formed between the upper inner heat exchange plate (12) and the lower inner heat exchange plate (13) is a hot fluid channel (2), a cavity formed between the upper inner heat exchange plate (12) and the upper outer heat exchange plate (11) and between the lower inner heat exchange plate (13) and the lower outer heat exchange plate (14) is a cold fluid channel (8), semicircular holes are formed in the upper outer heat exchange plate (11) and the lower outer heat exchange plate (14), a part of the upper inner heat exchange plate (12) and a part of the lower inner heat exchange plate (13) extend out of the cold fluid channel (8) to be fixed, and the cross section of each cold fluid channel (8) is in the shape of two semi-circles; forming a cold fluid channel (8) and a hot fluid channel (2) by etching an upper outer heat exchange plate (11), a lower outer heat exchange plate (14), an upper inner heat exchange plate (12) and a lower inner heat exchange plate (13); the upper inner heat exchange plate (12) and the lower inner heat exchange plate (13) are the heat conducting metal base plates;
both ends of the plurality of cold fluid channels (8) are provided with a cold fluid flow space (7); the inlet ends of the plurality of cold fluid channels (8) are communicated with the cold fluid flow space (7), and an inlet header is arranged at one side of the cold fluid flow space (7); the outlet ends of the plurality of cold fluid channels (8) are communicated with the cold fluid flow space (7), and an outlet header is arranged at one side of the cold fluid flow space (7);
each heat exchange unit is formed by superposing an upper outer heat exchange plate (11), a lower outer heat exchange plate (14), an upper inner heat exchange plate (12) and a lower inner heat exchange plate (13) in an integrated manner in a diffusion welding manner;
the two sides of the heat exchange plate group (10) are provided with partition plates (3); the cold fluid and the hot fluid are always separated by the upper inner heat exchange plate, the lower inner heat exchange plate and the partition plate (3);
the lengths of the upper inner heat exchange plate (12) and the lower inner heat exchange plate (13) in the fluid flow direction are larger than those of the upper outer heat exchange plate (11) and the lower outer heat exchange plate (14).
2. A compact heat exchange device according to claim 1, characterized in that the cold fluid channel (8) and the hot fluid channel (2) are arranged parallel to each other.
3. A compact heat exchange device according to claim 1 or 2, characterized in that the cold fluid channel (8) is a straight channel, a zigzag channel or an S-channel.
4. A compact heat exchanger device according to claim 1, characterized in that the upper outer heat exchanger plate (11), the lower outer heat exchanger plate (14), the upper inner heat exchanger plate (12) and the lower inner heat exchanger plate (13) are shaped by pressing or pouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510413.8A CN107192284B (en) | 2017-06-28 | 2017-06-28 | Compact heat exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510413.8A CN107192284B (en) | 2017-06-28 | 2017-06-28 | Compact heat exchange device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107192284A CN107192284A (en) | 2017-09-22 |
| CN107192284B true CN107192284B (en) | 2024-01-19 |
Family
ID=59881143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710510413.8A Active CN107192284B (en) | 2017-06-28 | 2017-06-28 | Compact heat exchange device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107192284B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895830B (en) * | 2020-07-30 | 2021-07-30 | 苏州固特斯电子科技有限公司 | Cross flow state heat exchange equipment based on heat convection process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003172591A (en) * | 2001-12-07 | 2003-06-20 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| CN1719179A (en) * | 2005-07-11 | 2006-01-11 | 刘庆久 | Pipe heat exchanger |
| JP2006258368A (en) * | 2005-03-17 | 2006-09-28 | Matsushita Electric Ind Co Ltd | Heat exchanger and heat pump water heater using it |
| CN203454864U (en) * | 2013-08-21 | 2014-02-26 | 苏州康华净化系统工程有限公司 | Jacketed pipe heat exchanger |
| CN203501882U (en) * | 2013-08-02 | 2014-03-26 | 成信绿集成股份有限公司 | Protection sleeve for heat exchanger coiled pipe elbow |
| CN104019678A (en) * | 2013-02-28 | 2014-09-03 | 张舒 | Plate core of radiator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5393606B2 (en) * | 2010-07-12 | 2014-01-22 | 株式会社Ｃｋｕ | Heat exchanger |
-
2017
- 2017-06-28 CN CN201710510413.8A patent/CN107192284B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003172591A (en) * | 2001-12-07 | 2003-06-20 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| JP2006258368A (en) * | 2005-03-17 | 2006-09-28 | Matsushita Electric Ind Co Ltd | Heat exchanger and heat pump water heater using it |
| CN1719179A (en) * | 2005-07-11 | 2006-01-11 | 刘庆久 | Pipe heat exchanger |
| CN104019678A (en) * | 2013-02-28 | 2014-09-03 | 张舒 | Plate core of radiator |
| CN203501882U (en) * | 2013-08-02 | 2014-03-26 | 成信绿集成股份有限公司 | Protection sleeve for heat exchanger coiled pipe elbow |
| CN203454864U (en) * | 2013-08-21 | 2014-02-26 | 苏州康华净化系统工程有限公司 | Jacketed pipe heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN107192284A (en) | 2017-09-22 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20211008 Address after: 710032 No. 136 Xingqing Road, Beilin District, Xi'an City, Shaanxi Province Applicant after: Xi'an Thermal Power Research Institute Co.,Ltd. Applicant after: HUANENG QINGHAI GENERATING Co.,Ltd. Address before: 710032 No. 136 Xingqing Road, Beilin District, Xi'an City, Shaanxi Province Applicant before: Xi'an Thermal Power Research Institute Co.,Ltd. |
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