CN212300004U - Printed circuit board type heat exchanger device with symmetrical corrugated structure - Google Patents
Printed circuit board type heat exchanger device with symmetrical corrugated structure Download PDFInfo
- Publication number
- CN212300004U CN212300004U CN202020953994.XU CN202020953994U CN212300004U CN 212300004 U CN212300004 U CN 212300004U CN 202020953994 U CN202020953994 U CN 202020953994U CN 212300004 U CN212300004 U CN 212300004U
- Authority
- CN
- China
- Prior art keywords
- type
- corrugated
- symmetrical
- heat exchanger
- printed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A printed circuit board type heat exchanger device with a symmetrical corrugated structure comprises a plurality of A-type plate pieces and a plurality of B-type plate pieces, wherein A-type corrugated flow channels are arranged on the A-type plate pieces, and B-type corrugated flow channels are arranged on the B-type plate pieces. The A-type corrugated flow channel and the B-type corrugated flow channel are formed by a plurality of corrugated micro-channels in parallel. The surface lines of the left side wall and the right side wall of the micro-channel are in a symmetrical periodic ripple structure. The symmetrical corrugated structures on the left side wall surface and the right side wall surface of the micro-channel strengthen the fluid disturbance and the scouring on the wall surfaces and induce secondary flow, so that the printed circuit board type heat exchanger core body with the structure has the characteristics of strong anti-blocking capability, excellent heat transfer performance, large heat transfer area density and small maintenance workload.
Description
Technical Field
The utility model relates to a heat transfer device technical field, in particular to symmetrical ripple structure printed circuit board formula heat exchanger device.
Background
A printed circuit board heat exchanger (PCHE) is a micro-channel plate heat exchanger, has the advantages of compact structure, high temperature resistance, high pressure resistance, safety, reliability and the like, and is widely applied to the fields of refrigeration and air conditioning, petroleum and natural gas, nuclear industry, chemical industry, electric power industry and the like. The heat exchange core body is a core component of the PCHE, and not only provides a flow channel of high-temperature working media and low-temperature working media, but also provides a heat transfer area between the high-temperature working media and the low-temperature working media. The PCHE core body is formed by assembling metal plates etched with a large number of fine flow channels in a laminated mode and then performing diffusion welding.
The PCHE core body micro-channel structure which is mature in technology and widely applied at present has two types of straight channel and Z-shaped channel, and the side wall of the channel is of a straight surface structure. The straight-line channel has the advantages of simple structure and small pressure loss, and the Z-shaped channel has the advantage of strong heat transfer capacity. Theoretical research and practical experience show that the PCHE equipment with the diameter of about 2mm has excellent comprehensive performance, so that most of the PCHE products adopt a linear or Z-shaped microchannel structure with the equivalent diameter of about 1-2 mm.
The number of micro-channels in megawatt-level PCHE equipment is as large as nearly one hundred thousand, and for the micro-channels with large number, no matter a straight-line or Z-shaped micro-channel structure is adopted, the problem of micro-channel blockage is a technical problem which cannot be avoided and is difficult to overcome. The situation that micro-channels are partially blocked often occurs in the operating PCHE equipment, and if the micro-channels are not processed in time, the blocking problem is rapidly worsened, and finally the equipment cannot normally operate. At present, the most commonly adopted and effective technology for treating the blockage in the PCHE core body micro-channel at home and abroad is an ultrahigh pressure (100 MPa) hydraulic jet method. But the equipment and labor cost of the technology is high, the maintenance cost of the PCHE equipment can be obviously improved, and the economy is poor.
Disclosure of Invention
In order to solve the problems existing in the prior art, the utility model aims to provide a symmetrical corrugated structure printed circuit board heat exchanger device, this heat exchanger core have prevent stifled strong ability, heat transfer performance is excellent, heat transfer area density is big, the little characteristics of maintenance work load.
In order to realize the purpose, the utility model discloses a technical scheme is:
a printed circuit board type heat exchanger device with a symmetrical corrugated structure comprises a plurality of A-type plate pieces 1 and a plurality of B-type plate pieces 2 which are sequentially and alternately stacked from top to bottom, wherein A-type corrugated flow channels 3 are etched on the upper surfaces of the A-type plate pieces 1, and B-type corrugated flow channels 4 are etched on the upper surfaces of the B-type plate pieces 2; the A-type corrugated flow passage 3 is introduced with a high-temperature working medium or a low-temperature working medium which needs to be subjected to heat exchange, and the B-type corrugated flow passage 4 is introduced with a low-temperature working medium or a high-temperature working medium which needs to be subjected to heat exchange.
The A-type corrugated flow channel 3 is formed by a plurality of symmetrical corrugated micro-channels in parallel, and the B-type corrugated flow channel 4 is formed by a plurality of symmetrical corrugated micro-channels in parallel.
The surface lines of the two side walls of the micro-channel of the A-shaped corrugated flow channel 3 are any one of arc waves, sine waves, triangular waves and trapezoidal waves which are symmetrical to each other.
The surface lines of the two side walls of the micro-channel of the B-type corrugated flow channel 4 are any one of arc waves, sine waves, triangular waves and trapezoidal waves which are symmetrical to each other.
The cross section of the micro-channel of the A-shaped corrugated flow channel 3 is rectangular; the cross section of the micro-channel of the B-type corrugated flow channel 4 is rectangular.
The flow channel directions of the A-type corrugated flow channel 3 and the B-type corrugated flow channel 4 can be arranged in a parallel, vertical or inclined staggered mode.
One or more B-type plates 2 can be arranged between the A-type plates 1.
One or more A-type plates 1 can be arranged between the B-type plates 2.
The utility model has the advantages that:
(1) strong antifouling, antiscaling and anti-blocking capabilities. The symmetrical corrugated side wall shape of the micro-channel can induce secondary flow and improve the turbulence degree of the fluid, so that impurity particles in the fluid are difficult to deposit and scale in the micro-channel, and the channel blockage can be effectively prevented. Even if a small amount of accumulated dirt is blocked, the secondary flow can well scour the wall surface of the channel, and the secondary flow has strong effects of removing the dirt and dredging the blockage.
(2) The heat transfer performance is excellent. When flowing along the symmetrical corrugated wall surface, the fluid forms strong disturbance and induces secondary flow, so that the thickness of a thermal boundary layer is effectively reduced, the convective heat transfer resistance is reduced, and the convective heat transfer coefficient between the fluid and the wall surface of the micro-channel is improved. Compare with straight lateral wall microchannel structure, the utility model provides a symmetrical ripple lateral wall structure microchannel's coefficient of heat transfer can promote more than 2 times.
(3) The heat transfer area density is large. Compared with a straight side wall structure, the utility model provides a symmetrical ripple side wall structure heat transfer area density can increase 30% ~ 300%.
(4) The maintenance workload is small. Because symmetrical ripple lateral wall structure microchannel scale control, prevent stifled, scale removal, dredge stifled ability reinforce, can show and reduce microchannel and block up the risk, consequently the utility model provides a symmetrical ripple lateral wall structure PCHE equipment takes place to block up probability greatly reduced that became invalid, and equipment mediation maintenance work volume and maintenance cost all obtain reducing by a wide margin.
Drawings
Fig. 1 is an assembly diagram of the present invention.
Fig. 2 is the structural schematic diagram of the symmetrical arc-shaped wave with symmetrical corrugated walls of the present invention.
Fig. 3 is a schematic diagram of the symmetrical sine wave structure of the symmetrical corrugated wall surface of the present invention.
Fig. 4 is a schematic diagram of the symmetrical triangular wave structure of the symmetrical corrugated wall surface of the present invention.
Fig. 5 is a schematic view of the symmetrical trapezoidal wave structure of the symmetrical corrugated wall surface of the present invention.
Wherein, 1 is A-type plate, 2 is B-type plate, 3 is A-type corrugated flow channel, and 4 is B-type corrugated flow channel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a printed circuit board heat exchanger device with a symmetrical corrugated structure is formed by 3 a-type plates 1 and 2B-type plates 2 which are spaced from top to bottom, stacked and assembled, and then diffusion-welded. The A-type corrugated flow channel 3 is arranged on the A-type plate 1 and is used as a flow channel of a high-temperature working medium; and the B-type sheet 2 is provided with a B-type corrugated flow passage 4 as a flow passage of a low-temperature working medium.
As shown in fig. 2 to 5: the surface lines of the two side walls of the micro-channel of the A-shaped corrugated flow channel 3 are any one of arc waves, sine waves, triangular waves and trapezoidal waves which are symmetrical to each other.
The surface lines of the two side walls of the micro-channel of the B-type corrugated flow channel 4 are any one of arc waves, sine waves, triangular waves and trapezoidal waves which are symmetrical to each other. The larger the amplitude of the corrugated line is, the smaller the pitch is, the stronger the anti-blocking ability of the corrugated flow channel is, the better the heat transfer performance is, the larger the heat transfer area density is, but the resistance loss is also increased obviously.
The cross section of the micro-channel of the A-shaped corrugated flow channel 3 is rectangular; the cross section of the micro-channel of the B-type corrugated flow channel 4 is rectangular.
The A-type plate sheet 1 and the B-type plate sheet 2 are both 100 multiplied by 80 multiplied by 2mm3316 stainless steel mirror plate. An A-type corrugated flow channel 3 is etched on the upper surface of the A-type plate 1, and a B-type corrugated flow channel 4 is etched on the upper surface of the B-type plate 2. The corrugated flow channels 3 and 4 are formed by 5 symmetrical corrugated side wall structure micro-channels which are arranged in parallel at equal intervals and are longThe degree is 100mm, the width of the rectangular cross section of the micro-channel is 2-4 mm, the depth of the micro-channel is 1mm, and the distance between the micro-channels is 16 mm. The corrugated lines on the left side wall surface and the right side wall surface of the micro-channel are semicircular arcs with the amplitude of 2mm, the pitch of the semicircular arcs is 4mm, and the corrugated lines on the left side wall surface and the right side wall surface are symmetrical about the central longitudinal section of the micro-channel. Increasing the corrugation amplitude or decreasing the corrugation pitch helps to strengthen the fluid disturbance, increase the secondary flow strength, improve the anti-blocking capability and heat transfer performance, increase the heat transfer area, and reduce the maintenance workload of the equipment, but increases the manufacturing cost and the operating cost of the equipment due to the increase of the etching length and the flow resistance.
The main flow direction of the high-temperature working medium in the A-type corrugated flow passage 3 is from top right to bottom left, the main flow direction of the low-temperature working medium in the B-type corrugated flow passage 4 is from bottom left to top right, and the high-temperature working medium and the low-temperature working medium are arranged in a countercurrent mode.
Claims (8)
1. A printed circuit board type heat exchanger device with a symmetrical corrugated structure is characterized by comprising a plurality of A-type plates (1) and a plurality of B-type plates (2) which are alternately stacked and arranged from top to bottom in sequence, wherein A-type corrugated flow channels (3) are etched on the upper surfaces of the A-type plates (1), and B-type corrugated flow channels (4) are etched on the upper surfaces of the B-type plates (2); high-temperature working media or low-temperature working media needing heat exchange are introduced into the A-type corrugated flow passage (3), and low-temperature working media or high-temperature working media needing heat exchange are introduced into the B-type corrugated flow passage (4).
2. A symmetrical corrugated construction printed circuit board heat exchanger device according to claim 1, characterized in that the a-type corrugated flow channel (3) is composed of a number of symmetrical corrugated micro-channels in parallel and the B-type corrugated flow channel (4) is composed of a number of symmetrical corrugated micro-channels in parallel.
3. A printed circuit board heat exchanger device with a symmetrical corrugated structure according to claim 1, wherein the lines of the two side walls of the microchannel of the a-type corrugated flow channel (3) are any one of arc wave, sine wave, triangular wave and trapezoidal wave which are symmetrical with each other.
4. A printed circuit board heat exchanger device with a symmetrical corrugated structure according to claim 1, wherein the lines on the two side walls of the microchannel of the B-shaped corrugated flow channel (4) are any one of arc wave, sine wave, triangular wave and trapezoidal wave which are symmetrical with each other.
5. A symmetrical corrugated construction printed circuit board heat exchanger device according to claim 1, characterized in that the microchannel cross-sectional shape of the a-shaped corrugated flow channel (3) is rectangular; the cross section of the micro-channel of the B-type corrugated flow channel (4) is rectangular.
6. A symmetrical corrugated construction printed circuit board heat exchanger device according to claim 1, characterized in that the flow channel directions of the a-type corrugated flow channels (3) and the B-type corrugated flow channels (4) can be arranged in parallel, vertically or obliquely staggered arrangement.
7. A symmetric corrugated construction printed circuit plate heat exchanger device according to claim 1, characterized in that one or more B-type plates (2) can be placed between the a-type plates (1).
8. A symmetric corrugated construction printed circuit plate heat exchanger device according to claim 1, characterized in that one or more a-type plates (1) can be placed between the B-type plates (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020953994.XU CN212300004U (en) | 2020-05-30 | 2020-05-30 | Printed circuit board type heat exchanger device with symmetrical corrugated structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020953994.XU CN212300004U (en) | 2020-05-30 | 2020-05-30 | Printed circuit board type heat exchanger device with symmetrical corrugated structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212300004U true CN212300004U (en) | 2021-01-05 |
Family
ID=73941014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020953994.XU Active CN212300004U (en) | 2020-05-30 | 2020-05-30 | Printed circuit board type heat exchanger device with symmetrical corrugated structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212300004U (en) |
-
2020
- 2020-05-30 CN CN202020953994.XU patent/CN212300004U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10473403B2 (en) | Heat exchanger | |
| EP2455694A2 (en) | Heat exchanger | |
| CN111707115A (en) | Diffusion welding compact heat exchanger with combined heat exchange plate | |
| CN111486719A (en) | Core body of printed circuit board type heat exchanger with symmetrical corrugated structure | |
| CN111059934A (en) | Composite construction printed circuit board formula heat exchanger core | |
| CN111059933A (en) | High-efficient many return strokes printed circuit board formula heat exchanger core | |
| CN111854486A (en) | Micro-channel heat exchanger | |
| CN109443056B (en) | Double-sided staggered printed circuit board type heat exchange plate and heat exchanger | |
| CN111721151A (en) | Core body of printed circuit board type heat exchanger with sinusoidal channel structure | |
| CN112033192A (en) | High-pressure-resistant high-heat-exchange-rate brazed heat exchanger | |
| CN212300004U (en) | Printed circuit board type heat exchanger device with symmetrical corrugated structure | |
| CN212482206U (en) | Diffusion welding compact heat exchanger with combined heat exchange plate | |
| CN108801008A (en) | A kind of cross connection structural printing circuit board type heat exchanger core body | |
| CN211451981U (en) | Plate heat exchanger | |
| CN113154915A (en) | Discontinuous S-shaped fin heat exchange plate and PCHE core body | |
| WO1996006320A1 (en) | Plate-type heat exchanger for liquids and gases | |
| CN207180438U (en) | Plate type heat exchanger main heat exchange plate ripple plot structure | |
| CN112272444A (en) | Printed circuit board heat exchanger core for reducing stress | |
| CN115307464A (en) | Printed plate type heat exchanger core and heat exchanger | |
| CN215003090U (en) | Large and small channel plate heat exchanger | |
| CN201225853Y (en) | Wide channel plate heat exchanger with detachable intensified element on one side | |
| CN216558438U (en) | Plate type heat exchanger | |
| WO2015090187A1 (en) | Heat exchange unit and heat exchanger | |
| CN210004852U (en) | compact heat exchanger | |
| CN215832535U (en) | Mixed rib heat exchanger core and heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |