CN111928688B - Fluid channel structure of printed circuit board heat exchanger and printed circuit board heat exchanger - Google Patents
Fluid channel structure of printed circuit board heat exchanger and printed circuit board heat exchanger Download PDFInfo
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- CN111928688B CN111928688B CN202010712196.2A CN202010712196A CN111928688B CN 111928688 B CN111928688 B CN 111928688B CN 202010712196 A CN202010712196 A CN 202010712196A CN 111928688 B CN111928688 B CN 111928688B
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- fluid
- circuit board
- printed circuit
- heat exchanger
- board heat
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- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
- F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
- F28D1/0316—Assemblies of conduits in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/30—Safety or protection arrangements; Arrangements for preventing malfunction for preventing vibrations
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The embodiment of the invention provides a fluid channel structure of a printed circuit board heat exchanger and the printed circuit board heat exchanger. The embodiment of the invention provides a fluid channel structure of a printed circuit board heat exchanger, which comprises: a plurality of sets of fluid lines arranged in parallel along a width direction of the fluid channel structure, each set of fluid lines comprising: a plurality of fluid flow channels and expansion cavities alternately arranged along a length direction of the fluid channel structure and connected to each other, wherein a width of the expansion cavities is greater than a width of the fluid flow channels. According to the fluid passage structure of the printed circuit board heat exchanger, provided by the embodiment of the invention, the intermittent expansion cavity structure is arranged in the fluid passage structure, and the capability of the expansion cavity for reducing pulsation is utilized, so that the beneficial effects of reducing the flow pulsation of the fluid passage and weakening pipeline vibration and fluid noise caused by the fluid pulsation are achieved.
Description
Technical Field
The invention relates to the technical field of printed circuit board heat exchangers, in particular to a fluid channel structure of a printed circuit board heat exchanger and the printed circuit board heat exchanger.
Background
In fluid heat exchange systems, fluid pulsations can excite the piping system to vibrate and fluid noise can propagate out of the pipe. The traditional rubber vibration isolator has good isolation capability on high-frequency vibration, but cannot realize vibration attenuation of full frequency bands on broadband vibration caused by fluid pulsation excitation. Fluid pulsations are currently attenuated by installing fluid pulsation attenuators in the piping to attenuate piping vibrations and fluid noise caused by the fluid pulsations. However, installing a fluid pulsation attenuator in the piping takes up system space, affecting system layout.
Disclosure of Invention
The embodiment of the invention provides a fluid channel structure of a printed circuit board heat exchanger, which is used for overcoming the defects of pipeline vibration and fluid noise caused by fluid pulsation in the prior art and weakening the vibration and the fluid noise in a pipeline without specially installing a fluid pulsation attenuator.
The embodiment of the invention provides a fluid channel structure of a printed circuit board heat exchanger, which comprises: a plurality of sets of fluid lines arranged in parallel along a width direction of the fluid channel structure, each set of fluid lines comprising: a plurality of fluid flow channels and expansion cavities alternately arranged along a length direction of the fluid channel structure and connected to each other, wherein a width of the expansion cavities is greater than a width of the fluid flow channels.
According to the fluid passage structure of the printed circuit board heat exchanger of one embodiment of the invention, the expansion cavities in each set of the fluid pipelines are constructed in a mirror symmetry structure relative to the axis of the fluid flow channel.
According to the fluid passage structure of a printed circuit board heat exchanger according to one embodiment of the present invention, the opposite surfaces of the expansion chamber facing each other in the width direction together enclose a polygonal shape.
According to the fluid passage structure of a printed circuit board heat exchanger according to one embodiment of the present invention, the opposite surfaces of the expansion chamber facing each other in the width direction form a circular arc surface.
The fluid channel structure of the printed circuit board heat exchanger according to one embodiment of the invention further comprises a fluid flow distribution cavity, and a plurality of groups of the fluid pipelines arranged in parallel are arranged in the fluid flow distribution cavity.
According to the fluid passage structure of the printed circuit board heat exchanger of one embodiment of the present invention, the opposite end faces of the fluid flow distribution chamber extending in the width direction are respectively configured as undulating surfaces.
According to the fluid passage structure of the printed circuit board heat exchanger of one embodiment of the present invention, the shapes of the two opposite end surfaces of the fluid flow distribution chamber are respectively continuous curved shapes.
According to the fluid channel structure of the printed circuit board heat exchanger, the wave trough positions of the curved surface are respectively arranged corresponding to one of the expansion cavities, and the wave crest positions of the curved surface are respectively arranged corresponding to the inlet of one of the fluid flow channels.
The fluid channel structure of the printed circuit board heat exchanger according to an embodiment of the present invention further includes a fluid inlet pipe and a fluid outlet pipe respectively connected to opposite end surfaces of the fluid flow distribution chamber configured as the undulating surface.
The embodiment of the invention also provides a printed circuit board heat exchanger, which comprises the fluid channel structure of the printed circuit board heat exchanger.
According to the fluid passage structure of the printed circuit board heat exchanger, provided by the embodiment of the invention, the intermittent expansion cavity structure is arranged in the fluid passage structure, and the capability of the expansion cavity for reducing pulsation is utilized, so that the beneficial effects of reducing the flow pulsation of the fluid passage and weakening pipeline vibration and fluid noise caused by the fluid pulsation are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fluid channel structure of a printed circuit board heat exchanger according to one embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fluid channel structure of a printed circuit board heat exchanger according to another embodiment of the present invention.
Reference numerals:
1: a fluid inlet tube; 2: an expansion lumen; 3: a fluid flow passage; 4: a fluid flow distribution chamber; 5: a fluid outlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The fluid passage structure of the printed circuit board heat exchanger according to the embodiment of the present invention will be described with reference to fig. 1 and 2.
As shown in fig. 1 and 2, in one embodiment of the present invention, a fluid passage structure of a printed circuit board heat exchanger includes: and a plurality of groups of fluid pipelines which are arranged in parallel along the width direction of the fluid channel structure. Specifically, each set of fluid lines includes: a plurality of fluid flow channels 3 and expansion chambers 2, each fluid flow channel 3 and each expansion chamber 2 being alternately arranged in a length direction of the fluid passage structure and connected to each other. The gaps between two adjacent groups of fluid lines also form fluid lines. That is, the fluid may flow through the fluid flow channel 3 and then enter the expansion chamber 2, or may flow through the expansion chamber 2 formed by the gap between two adjacent fluid flow channels 3 and then enter the fluid flow channel 3 formed by two adjacent expansion chambers 2.
Further, the width dimension of the expansion chamber 2 is larger than the width of the fluid flow channel 3, so that an intermittently expanded pipeline structure is formed inside the fluid pipeline. During the process of expanding the fluid in the fluid pipeline, the fluid pulsation in a partial frequency range is reflected continuously and attenuated. Specifically, the abrupt change of the cross section of the fluid pipeline is formed between the fluid flow channel 3 and the expansion cavity 2, and the transmission impedance is changed in the process of fluid pulsation propagation, so that the reflection and interference of the fluid pulsation are caused, and the aims of weakening the flow pulsation, fluid noise caused by the flow pulsation and the vibration of the fluid pipeline are fulfilled.
Further, the shape of the expansion chamber 2 may be various shapes, and it is only necessary that the dimension in the width direction thereof is larger than the width dimension of the fluid flow path 3, so that the cross-sectional dimension therebetween is formed to be abrupt. Alternatively, the structure of the expansion chamber 2 may be polygonal, elliptical, or the like.
According to the fluid passage structure of the printed circuit board heat exchanger, provided by the embodiment of the invention, the intermittent expansion cavity structure is arranged in the fluid passage structure, and the capability of the expansion cavity for reducing pulsation is utilized, so that the beneficial effects of reducing the flow pulsation of the fluid passage and weakening pipeline vibration and fluid noise caused by the fluid pulsation are achieved.
In one embodiment of the invention, the expansion chambers 2 in each set of fluid lines are arranged mirror-symmetrically with respect to the axis of the fluid flow channel 3. Specifically, two surfaces of the expansion chamber 2 symmetrically disposed with respect to the axis of the fluid flow path 3 may be flat surfaces, curved surfaces, or arc surfaces.
Specifically, as shown in fig. 1, in one embodiment of the present invention, the expansion chamber 2 is constructed in a rectangular structure.
In one embodiment of the invention, the expansion chamber 2 is configured in an elliptical configuration, as shown in figure 2.
It should be noted that: the shapes of the two expansion chambers 2 listed above are only two specific examples of the present invention, but any shape satisfying a width dimension larger than the width of the fluid flow channel 3 falls within the scope of the embodiments defined in the present invention, as described above.
As shown in fig. 1 and 2, in one embodiment of the present invention, the fluid channel structure of the printed circuit board heat exchanger further comprises a fluid flow distribution chamber 4. Specifically, a plurality of sets of fluid lines are arranged in parallel in the fluid flow distribution chamber 4, and both end surfaces of the fluid flow distribution chamber 4 corresponding to the inlet and outlet directions of each set of fluid lines are configured as undulating surfaces. The undulating surface may be in the form of a continuous curved surface, for example the cross-section of the curved surface may be in the form of a continuous wave, or in the form of a continuous broken line.
Furthermore, the wave trough positions of the curved surface are respectively arranged corresponding to one expansion cavity 2, and the wave crest positions of the curved surface are respectively arranged corresponding to one fluid flow channel 3. The purpose of this is that the flow cross-sectional area of the fluid at the valley and peak locations is equal after the fluid enters the fluid flow distribution chamber 4. When the fluid flow rate is constant, the area of each flow cross section is inversely proportional to the fluid flow velocity, and when the area of the flow cross section is equal, the velocity of the fluid passing through each fluid flow passage 3 is also equal. The fluid can flow into the outlet position at the same speed after entering the fluid flow distribution cavity 4, the uniformity of fluid flow is ensured, and the problems that the resistance of the fluid flow is increasingly large, the flow speed is increasingly slow, the flow uniformity is poor and the heat exchange effect of the printed circuit board heat exchanger is poor in the fluid flow process in the fluid channel structure of the traditional printed circuit board heat exchanger and in the inlet position area far away from the fluid flow distribution cavity 4 are solved, so that the heat exchange effect of the printed circuit board heat exchanger is improved.
As shown in fig. 1 and 2, in one embodiment of the present invention, the fluid passage structure of the printed circuit board heat exchanger further includes: a fluid inlet pipe 1 and a fluid outlet pipe 5. Specifically, the fluid inlet pipe 1 and the fluid outlet pipe 5 are respectively connected to two oppositely disposed end faces of the fluid flow distributing chamber 4 configured as an undulating surface.
The working principle of the fluid passage structure of the printed circuit board heat exchanger according to the embodiment of the present invention will be described in detail below by taking the embodiment shown in fig. 1 as an example.
Fluid enters the fluid flow distribution cavity 4 from the fluid inlet pipe 1, part of the fluid enters the fluid flow channel 3 through the expansion cavity 2, part of the fluid enters the expansion cavity 2 through the fluid flow channel 3, and fluid pulsation in a part of frequency range is continuously reflected and attenuated in the continuous expansion process of the fluid in a fluid pipeline, so that the aims of reducing the fluid pulsation of the fluid channel and attenuating pipeline vibration and fluid noise caused by the fluid pulsation are fulfilled.
After the fluid enters the fluid flow distribution cavity 4, because the two end surfaces of the fluid flow distribution cavity 4 connected with the fluid inlet pipe 1 and the fluid outlet pipe 5 are both in a curved surface shape, the trough position of the curved surface corresponds to the expansion cavity 2, and the peak position of the curved surface corresponds to the fluid flow channel 3, the areas of the flowing cross sections of the fluid are equal, so that the flow velocity of the fluid is the same, and the fluid can uniformly flow to the position of the fluid outlet pipe 5.
In another aspect, embodiments of the present invention further provide a printed circuit board heat exchanger, and in particular, a fluid channel structure of the printed circuit board heat exchanger as described above.
According to the printed circuit board heat exchanger provided by the embodiment of the invention, the intermittent expansion cavity structure is arranged in the fluid channel structure, and the capability of the expansion cavity for reducing pulsation is utilized, so that the beneficial effects of reducing the flow pulsation of the fluid channel and weakening pipeline vibration and fluid noise caused by the fluid pulsation are achieved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A fluid passage structure of a printed circuit board heat exchanger, comprising: a plurality of sets of fluid lines arranged in parallel along a width direction of the fluid channel structure, each set of fluid lines comprising: a plurality of fluid flow channels and expansion chambers alternately arranged along a length direction of the fluid channel structure and connected to each other, wherein a width of the expansion chamber is greater than a width of the fluid flow channels;
the fluid channel structure of the printed circuit board heat exchanger further comprises a fluid flow distribution cavity, a plurality of groups of fluid pipelines which are arranged in parallel are arranged in the fluid flow distribution cavity, two opposite end faces of the fluid flow distribution cavity extending along the width direction are respectively constructed into a wavy surface, the two opposite end faces of the fluid flow distribution cavity are respectively in a continuous curved surface shape, each trough position of the curved surface is respectively arranged corresponding to one of the expansion cavities, and each crest position of the curved surface is respectively arranged corresponding to the inlet of one of the fluid flow channels.
2. The fluid passage structure of a printed circuit board heat exchanger according to claim 1, wherein the expansion chambers in each set of the fluid conduits are configured in a mirror-symmetrical configuration with respect to an axis of the fluid flow channel.
3. The fluid passage structure of a printed circuit board heat exchanger according to claim 2, wherein surfaces of the expansion chamber facing each other in the width direction together enclose a polygonal shape.
4. The fluid passage structure of a printed circuit board heat exchanger according to claim 2, wherein surfaces of the expansion chamber facing each other in the width direction form a circular arc surface.
5. The fluid passage structure of a printed circuit board heat exchanger according to claim 1, further comprising a fluid inlet pipe and a fluid outlet pipe connected to opposite end surfaces of the fluid flow distribution chamber configured as a contoured surface, respectively.
6. A printed circuit board heat exchanger, characterized in that it comprises a fluid channel structure of a printed circuit board heat exchanger according to any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712196.2A CN111928688B (en) | 2020-07-22 | 2020-07-22 | Fluid channel structure of printed circuit board heat exchanger and printed circuit board heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712196.2A CN111928688B (en) | 2020-07-22 | 2020-07-22 | Fluid channel structure of printed circuit board heat exchanger and printed circuit board heat exchanger |
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| Publication Number | Publication Date |
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| CN111928688A CN111928688A (en) | 2020-11-13 |
| CN111928688B true CN111928688B (en) | 2021-10-29 |
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| CN202010712196.2A Active CN111928688B (en) | 2020-07-22 | 2020-07-22 | Fluid channel structure of printed circuit board heat exchanger and printed circuit board heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114353562B (en) * | 2021-11-30 | 2024-06-21 | 中国船舶重工集团公司第七一九研究所 | Heat exchange channel structure of printed circuit board heat exchanger and printed circuit board heat exchanger |
| CN114963835B (en) * | 2022-05-23 | 2023-04-28 | 西安交通大学 | Active type squamous-surface pulsating heat exchange channel with guide plate and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3490523A (en) * | 1968-04-08 | 1970-01-20 | Us Health Education & Welfare | Transfer device |
| DE19719261C2 (en) * | 1997-05-07 | 2001-06-07 | Valeo Klimatech Gmbh & Co Kg | Double-flow flat tube evaporator of a motor vehicle air conditioning system |
| CN103954162B (en) * | 2014-05-16 | 2015-10-21 | 中国科学院工程热物理研究所 | A kind of low-resistance Hydrodynamic cavitation structure strengthening Thermal Performance of Micro Channels |
| EP3542118B1 (en) * | 2016-12-26 | 2021-09-29 | PTT Global Chemical Public Company Limited | A heat exchanger for exchanging heat of fluids having different temperatures |
| CN207066221U (en) * | 2017-03-13 | 2018-03-02 | 广东美的暖通设备有限公司 | Distributor, heat exchanger assembly and air conditioner |
| CN111486719A (en) * | 2020-05-30 | 2020-08-04 | 西安热工研究院有限公司 | A symmetrical corrugated structure printed circuit board heat exchanger core |
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| CN111928688A (en) | 2020-11-13 |
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