CN113038808A - High-power 5G base station circuit board using circulating oil for refrigeration - Google Patents
High-power 5G base station circuit board using circulating oil for refrigeration Download PDFInfo
- Publication number
- CN113038808A CN113038808A CN202110354146.6A CN202110354146A CN113038808A CN 113038808 A CN113038808 A CN 113038808A CN 202110354146 A CN202110354146 A CN 202110354146A CN 113038808 A CN113038808 A CN 113038808A
- Authority
- CN
- China
- Prior art keywords
- pipe
- heat conduction
- circuit board
- barrel
- box
- 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.)
- Pending
Links
- 239000010724 circulating oil Substances 0.000 title claims abstract description 20
- 238000005057 refrigeration Methods 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract 5
- 238000007789 sealing Methods 0.000 claims description 38
- 238000005192 partition Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 8
- 210000003437 trachea Anatomy 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000003433 contraceptive agent Substances 0.000 description 1
- 230000002254 contraceptive effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20254—Cold plates transferring heat from heat source to coolant
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20281—Thermal management, e.g. liquid flow control
Abstract
The invention relates to the technical field of circuit boards, in particular to a high-power 5G base station circuit board refrigerated by circulating oil, which comprises a protective box, wherein the circuit board is arranged in the protective box, supporting blocks are arranged at two ends of the circuit board, the supporting blocks are fixed on the bottom surface of an inner cavity of the protective box, spring clamping pieces are arranged on the supporting blocks, a liquid injection pipe and a liquid discharge pipe are arranged at one side of each supporting block, the liquid discharge pipe is arranged at one side of the liquid injection pipe, and a plurality of heat conduction blocks which are uniformly distributed are arranged at the other side of the liquid injection pipe, the low-temperature circulating oil is injected through the liquid injection pipe, the circulating oil carries the heat around the wiring board in the process of passing through the heat conduction pipe, the effective cooling is realized, and the heat conduction box is used for sensing the temperature, and when the ambient temperature of the heat conduction box returns to normal, the corresponding L-shaped pipe channel is interrupted, so that the effect of self-regulation is realized.
Description
Technical Field
The invention relates to the technical field of circuit boards, in particular to a high-power 5G base station circuit board using circulating oil for refrigeration.
Background
In the prior art, a high-power 5G base station circuit board generates certain heat in the working process, so that the ambient temperature of the circuit board is forced to rise, and the aging of the circuit board is inevitably accelerated in the long run, thereby influencing the use of the circuit board and having important significance in cooling the circuit board.
If the circulating oil refrigeration mechanism can be invented, the high-efficiency and accurate cooling effect on the circuit board can be realized, the working safety of the circuit board is improved, the problem can be solved, and the high-power 5G base station circuit board using the circulating oil for refrigeration is provided.
Disclosure of Invention
The invention aims to provide a high-power 5G base station circuit board using circulating oil for refrigeration, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-power 5G base station circuit board refrigerated by circulating oil comprises a protection box, wherein a circuit board is arranged in the protection box, supporting blocks are arranged at two ends of the circuit board, the supporting blocks are fixed on the bottom surface of an inner cavity of the protection box, spring clamping pieces are arranged on the supporting blocks, a liquid injection pipe and a liquid discharge pipe are arranged on one side of each supporting block, the liquid discharge pipe is arranged on one side of each liquid injection pipe, a plurality of heat conduction blocks which are uniformly distributed are arranged on the other side of each liquid injection pipe, a heat conduction box is arranged between each heat conduction block and the circuit board, a plurality of support columns which are uniformly distributed are fixedly connected between each heat conduction box and each heat conduction block, a heat conduction pipe is arranged in each heat conduction block, two ends of each heat conduction pipe protrude out of each heat conduction block, the heat conduction pipes in each heat conduction block are in wave distribution, the one end protrusion of L type pipe is to annotating the liquid pipe outside, and the other end fixedly connected with of L type pipe gathers a class section of thick bamboo, the other end of heat pipe extends to in the L type pipe, one side fixedly connected with trachea of heat conduction box, tracheal one end extends to in the L type pipe, and the trachea tip is provided with the acrosome, the one end fixedly connected with bellows of acrosome, keeps away from the one end fixedly connected with control cylinder of acrosome on the bellows, be provided with the control valve in the L type pipe.
Preferably, the control valve comprises a sealing cylinder, a sealing ball, a spring and a partition plate, the sealing cylinder and the partition plate are fixed on the inner wall of the end part of the air pipe, the sealing ball and the spring are arranged between the sealing cylinder and the partition plate, one end of the spring is in contact with the partition plate, and the other end of the spring is in contact with the sealing ball.
Preferably, the partition plate is a circular plate, the plate body is provided with a plurality of uniformly distributed through holes in an annular mode, the sealing cylinder is a cylinder, the bottom surface of one side of the cylinder body is provided with a spherical groove, and the sealing ball partially protrudes into the spherical groove of the sealing cylinder.
Preferably, the top body shape is cylinder and cylinder one end is most advanced form, and the most advanced protrusion of top body is outside the trachea, and the middle part of the directional sealed section of thick bamboo of most advanced of top body, the cylinder lateral wall of top body is fitted with a contraceptive ring and is equipped with a plurality of evenly distributed's protrusion slider, and protrusion slider part on the top body extends to in the prismatic spout of seting up on tracheal body inner wall.
Preferably, the control cylinder is fixed on the inner wall of the air pipe, the corrugated pipe and the top body are movably sleeved in the air pipe, the flow gathering cylinder is in a shape that one end of the cylinder is integrally connected with the trapezoid cylinder, and the cylinder of the flow gathering cylinder is fixedly sleeved outside the air pipe.
Preferably, the heat conduction block is square block-shaped, the heat conduction box is square plate shell body-shaped, the liquid injection pipe and the liquid discharge pipe in the protection box are distributed in parallel, and one end of each of the liquid injection pipe and the liquid discharge pipe extends to the outside of the protection box.
Compared with the prior art, the invention has the beneficial effects that:
1. the structure design of the invention realizes the effect of automatic and accurate adjustment and cooling, low-temperature circulating oil is injected through the liquid injection pipe, the circulating oil carries heat around the wiring board in the process of passing through the heat conduction pipe, effective cooling is realized, the heat conduction box is used for sensing temperature, and when the ambient temperature of the heat conduction box returns to normal, the corresponding L-shaped pipe channel is interrupted, thus realizing the effect of autonomous adjustment;
2. the pneumatic control device is sealed by the corrugated pipe, so that the top body can move freely to control the sealing ball, and the control cylinder, the air pipe and the heat conduction box form a sealed space, so that the movement of the top body can be triggered by the thermal expansion of air in the heat conduction box, and the sensitive pneumatic control effect is realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a heat-conducting block;
fig. 3 is a schematic structural view of the heat conducting box.
In the figure: the device comprises a protection box 1, a circuit board 2, a supporting block 3, a liquid injection pipe 4, a liquid discharge pipe 5, a heat conduction block 6, a heat conduction box 7, a supporting column 8, a heat conduction pipe 9, an L-shaped pipe 10, a flow gathering cylinder 11, a top body 12, a corrugated pipe 13, a control cylinder 14, a control valve 15, an air pipe 16, a spring clamping piece 17, a sealing cylinder 18, a sealing ball 19, a spring 20 and a partition plate 21.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the technical solutions of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution: a high-power 5G base station circuit board using circulating oil for refrigeration comprises a protection box 1, a circuit board 2 is arranged in the protection box 1, supporting blocks 3 are arranged at two ends of the circuit board 2, the supporting blocks 3 are fixed on the bottom surface of an inner cavity of the protection box 1, spring clamping pieces 17 are arranged on the supporting blocks 3, a liquid injection pipe 4 and a liquid discharge pipe 5 are arranged on one side of the supporting blocks 3, the liquid discharge pipe 5 is arranged on one side of the liquid injection pipe 4, a plurality of heat conduction blocks 6 which are uniformly distributed are arranged on the other side of the liquid injection pipe 4, a heat conduction box 7 is arranged between the heat conduction blocks 6 and the circuit board 2, a plurality of support columns 8 which are uniformly distributed are fixedly connected between the heat conduction box 7 and the heat conduction blocks 6, a heat conduction pipe 9 is arranged in the heat conduction block 6, two ends of the heat conduction pipe 9 protrude out of the, be provided with a plurality of evenly distributed's L type pipe 10 in annotating the liquid pipe 4, the one end protrusion of L type pipe 10 is to annotating the liquid pipe 4 outside, the other end fixedly connected with of L type pipe 10 gathers a class section of thick bamboo 11, the other end of heat pipe 9 extends to in the L type pipe 10, one side fixedly connected with trachea 16 of heat conduction box 7, the one end of trachea 16 extends to in the L type pipe 10, and the trachea 16 tip is provided with roof 12, the one end fixedly connected with bellows 13 of roof 12, the one end fixedly connected with control cylinder 14 of roof 12 is kept away from on the bellows 13, be provided with control valve 15 in the L type pipe 10.
The control valve 15 comprises a sealing cylinder 18, a sealing ball 19, a spring 20 and a partition plate 21, wherein the sealing cylinder 18 and the partition plate 21 are fixed on the inner wall of the end part of the air pipe 16, the sealing ball 19 and the spring 20 are arranged between the sealing cylinder 18 and the partition plate 21, one end of the spring 20 is contacted with the partition plate 21, and the other end of the spring 20 is contacted with the sealing ball 19.
The partition plate 21 is a circular plate, a plurality of through holes are uniformly distributed on the plate body in an encircling manner, the sealing barrel 18 is a cylinder, a spherical groove is formed in the bottom surface of one side of the barrel body, and the sealing ball 19 partially protrudes into the spherical groove of the sealing barrel 18.
The shape of the top body 12 is cylindrical, one end of the top body is pointed, the pointed end of the top body 12 protrudes out of the air pipe 16, the pointed end of the top body 12 points to the middle part of the sealing barrel 18, a plurality of uniformly distributed protruding sliding blocks are annularly arranged on the side wall of the cylinder of the top body 12, and the protruding sliding blocks on the top body 12 partially extend into prismatic sliding grooves formed in the inner wall of the pipe body of the air pipe 16.
The control cylinder 14 is fixed on the inner wall of the air pipe 16, the corrugated pipe 13 and the top body 12 are movably sleeved in the air pipe 16, the flow gathering cylinder 11 is in a shape that one end of the cylinder is integrally connected with a trapezoidal cylinder, and the cylinder of the flow gathering cylinder 11 is fixedly sleeved outside the air pipe 16.
Heat conduction piece 6 is square cubic, heat conduction box 7 is square plate shell body form, notes liquid pipe 4 and 5 parallel distribution of fluid-discharge tube in the protection box 1, and it all has one end to extend to the protection box 1 outside to annotate liquid pipe 4 and fluid-discharge tube 5, refer to picture protection box 1 and understand, through external pipeline and notes liquid pipe 4, fluid-discharge tube 5 intercommunication, use the circulating oil mechanism of supplying oil among the prior art to annotating liquid pipe 4 and pour into the low-temperature fluid, the fluid flows the in-process in the protection box 1, take away the heat around the circuit board 2, realize the cooling to circuit board 2, the fluid is arranged outward through fluid-discharge tube 5 afterwards, and then is retrieved.
The working principle is as follows: in the process of flowing fluid in the liquid injection pipe 4, the fluid is diffused through the plurality of L-shaped pipes 10, the fluid in the L-shaped pipes 10 flows into the heat conduction pipes 9, the heat conduction block 6 and the heat conduction box 7 are both sensitive heat conduction materials, and gas which is sensitive to thermal expansion and cold contraction in the prior art is stored in the heat conduction box 7, so that the effect of temperature control fluid is realized, specifically, heat is emitted in the working process of the circuit board 2, the heat is transferred into the heat conduction box 7, the gas in the heat conduction box 7 expands, further, airflow is injected into the corrugated pipe 13 through the air pipe 16, the corrugated pipe 13 deforms and expands, the air pressure acts on the top body 12, the top body 12 moves to jack the sealing ball 19, the sealing ball 19 is far away from the sealing barrel 18, so that the channel of the L-shaped pipes 10 is smooth, namely, the fluid in the liquid injection pipe 4 can be injected into the heat conduction pipes 9 through the L-shaped pipes 10, the corresponding channel of the L-shaped pipe 10 cannot be unblocked, because the circuit board 2 rebounds to push the sealing ball 19, the sealing barrel 18 and the sealing ball 19 contact the channel of the L-shaped pipe 10, and the design realizes the effect of automatic and accurate control of temperature reduction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an use cryogenic high power 5G basic station circuit board of circulating oil, includes protection box (1), its characterized in that: the protective box (1) is internally provided with a circuit board (2), two ends of the circuit board (2) are provided with supporting blocks (3), the supporting blocks (3) are fixed on the bottom surface of an inner cavity of the protective box (1), spring clamping pieces (17) are arranged on the supporting blocks (3), one side of each supporting block (3) is provided with a liquid injection pipe (4) and a liquid discharge pipe (5), one side of each liquid injection pipe (4) is provided with a liquid discharge pipe (5), the other side of each liquid injection pipe (4) is provided with a plurality of uniformly distributed heat conduction blocks (6), a heat conduction box (7) is arranged between each heat conduction block (6) and the circuit board (2), a plurality of uniformly distributed supporting columns (8) are fixedly connected between each heat conduction box (7) and each heat conduction block (6), each heat conduction block (6) is internally provided with a heat conduction pipe (9), and two ends of each heat conduction pipe (9, the heat conduction pipes (9) in the heat conduction block (6) are distributed in a wave shape, one end of each heat conduction pipe (9) extends into the liquid discharge pipe (5), a plurality of L-shaped pipes (10) which are uniformly distributed are arranged in the liquid injection pipe (4), one end of each L-shaped pipe (10) protrudes out of the liquid injection pipe (4), the other end of each L-shaped pipe (10) is fixedly connected with a flow gathering barrel (11), the other end of the heat conducting pipe (9) extends into the L-shaped pipe (10), one side of the heat conducting box (7) is fixedly connected with an air pipe (16), one end of the air pipe (16) extends into the L-shaped pipe (10), and the end part of the air pipe (16) is provided with a top body (12), one end of the top body (12) is fixedly connected with a corrugated pipe (13), one end of the corrugated pipe (13) far away from the top body (12) is fixedly connected with a control cylinder (14), and a control valve (15) is arranged in the L-shaped pipe (10).
2. The high-power 5G base station circuit board using the circulating oil for refrigeration is characterized in that: the control valve (15) comprises a sealing barrel (18), a sealing ball (19), a spring (20) and a partition plate (21), the sealing barrel (18) and the partition plate (21) are fixed on the inner wall of the end part of the air pipe (16), the sealing ball (19) and the spring (20) are arranged between the sealing barrel (18) and the partition plate (21), one end of the spring (20) is in contact with the partition plate (21), and the other end of the spring (20) is in contact with the sealing ball (19).
3. The high-power 5G base station circuit board using the circulating oil for refrigeration is characterized in that: the partition plate (21) is in a circular plate shape, a plurality of uniformly distributed through holes are annularly arranged on the plate body, the sealing barrel (18) is in a cylindrical shape, a spherical groove is formed in the bottom surface of one side of the barrel body, and part of the sealing ball (19) protrudes into the spherical groove of the sealing barrel (18).
4. The high-power 5G base station circuit board using the circulating oil for refrigeration is characterized in that: the shape of the top body (12) is cylindrical, one end of the top body is pointed, the pointed end of the top body (12) protrudes out of the air pipe (16), the pointed end of the top body (12) points to the middle part of the sealing barrel (18), a plurality of uniformly distributed protruding sliding blocks are annularly arranged on the side wall of the cylinder of the top body (12), and the protruding sliding blocks on the top body (12) partially extend into prismatic sliding grooves formed in the inner wall of the pipe body of the air pipe (16).
5. The high-power 5G base station circuit board using the circulating oil for refrigeration is characterized in that: the control barrel (14) is fixed on the inner wall of the air pipe (16), the corrugated pipe (13) and the top body (12) are movably sleeved in the air pipe (16), the flow gathering barrel (11) is in a shape that one end of the barrel is integrally connected with the trapezoid barrel, and the barrel of the flow gathering barrel (11) is fixedly sleeved outside the air pipe (16).
6. The high-power 5G base station circuit board using the circulating oil for refrigeration is characterized in that: the heat conduction block (6) is square block-shaped, the heat conduction box (7) is square plate shell body-shaped, the liquid injection pipe (4) and the liquid discharge pipe (5) in the protection box (1) are distributed in parallel, and one end of each of the liquid injection pipe (4) and the liquid discharge pipe (5) extends to the outside of the protection box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110354146.6A CN113038808A (en) | 2021-04-01 | 2021-04-01 | High-power 5G base station circuit board using circulating oil for refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110354146.6A CN113038808A (en) | 2021-04-01 | 2021-04-01 | High-power 5G base station circuit board using circulating oil for refrigeration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113038808A true CN113038808A (en) | 2021-06-25 |
Family
ID=76453824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110354146.6A Pending CN113038808A (en) | 2021-04-01 | 2021-04-01 | High-power 5G base station circuit board using circulating oil for refrigeration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113038808A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688147A (en) * | 1985-09-20 | 1987-08-18 | Fujitsu Limited | Cooling device attached to each surface of electronic parts on a printed-wiring board |
| CN210133520U (en) * | 2019-05-16 | 2020-03-10 | 佛山市高明联星电路板有限公司 | Circuit board with plastic package structure |
| CN211589682U (en) * | 2019-12-20 | 2020-09-29 | 江苏亚泰管业制造有限公司 | Burnishing device is used in stainless steel tube machining |
| CN211607120U (en) * | 2019-10-23 | 2020-09-29 | 上海逸之盈信息技术中心(有限合伙) | Network circuit board for 5G |
| CN112492843A (en) * | 2020-11-24 | 2021-03-12 | 王松岩 | Security protection supervisory equipment independent power supply device |
-
2021
- 2021-04-01 CN CN202110354146.6A patent/CN113038808A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688147A (en) * | 1985-09-20 | 1987-08-18 | Fujitsu Limited | Cooling device attached to each surface of electronic parts on a printed-wiring board |
| CN210133520U (en) * | 2019-05-16 | 2020-03-10 | 佛山市高明联星电路板有限公司 | Circuit board with plastic package structure |
| CN211607120U (en) * | 2019-10-23 | 2020-09-29 | 上海逸之盈信息技术中心(有限合伙) | Network circuit board for 5G |
| CN211589682U (en) * | 2019-12-20 | 2020-09-29 | 江苏亚泰管业制造有限公司 | Burnishing device is used in stainless steel tube machining |
| CN112492843A (en) * | 2020-11-24 | 2021-03-12 | 王松岩 | Security protection supervisory equipment independent power supply device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201449196U (en) | Radiator with heat storage capacity | |
| CN102322601A (en) | Light-emitting diode (LED) backlight module and liquid crystal display device | |
| CN106950009B (en) | High-temperature environment pressure measurement system | |
| CN106091462A (en) | A kind of self-adjustable throttling refrigerator using memory metal alloy | |
| CN113053615B (en) | Helium microcirculation refrigeration Dewar system for superconducting magnet | |
| CN113038808A (en) | High-power 5G base station circuit board using circulating oil for refrigeration | |
| CN114251534A (en) | Ammonia gas heat tracing transportation device with self-adjusting energy consumption | |
| CN109373638B (en) | Low refrigerant charge natural convection evaporator for refrigeration system of refrigeration house | |
| CN116428892A (en) | Surface cooler for compressor | |
| CN213277724U (en) | Transformer cabinet temperature control type heat dissipation structure | |
| CN203550337U (en) | Solar absorption type evaporator | |
| CN203123982U (en) | Large high/low-temperature vacuum environment sting system work room | |
| CN112492843A (en) | Security protection supervisory equipment independent power supply device | |
| CN207881218U (en) | A kind of oil groove convenient for fast cooling | |
| CN210999628U (en) | Cooling device of plastic mould | |
| CN209820238U (en) | Heat dissipation system | |
| CN209115322U (en) | A kind of pump high-temperature buffer device | |
| CN108221950B (en) | Liquid nitrogen freezer with grooved liquid supply pipe | |
| CN203758335U (en) | Inner tube for heat exchange tube of open rack vaporizer | |
| CN215288791U (en) | Take temperature monitoring device's stem cell to shift storehouse | |
| CN214082397U (en) | A quick cooling box for after mould drawing of patterns | |
| CN219346849U (en) | Water spraying device for cooling air-cooled condenser of refrigerating unit | |
| CN218761634U (en) | Pressure reducing valve structure device with sealing function | |
| CN109121368B (en) | Thin-wall liquid cooling plate | |
| CN218031425U (en) | Straight-through type sealing stop valve with pressure relief function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210625 |