CN103472323B - A kind of rapid heat-exchange device through crack flow of fluid medium - Google Patents
A kind of rapid heat-exchange device through crack flow of fluid medium Download PDFInfo
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- CN103472323B CN103472323B CN201310303014.6A CN201310303014A CN103472323B CN 103472323 B CN103472323 B CN 103472323B CN 201310303014 A CN201310303014 A CN 201310303014A CN 103472323 B CN103472323 B CN 103472323B
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Abstract
A kind of rapid heat-exchange device through crack flow of fluid medium of the present invention belongs to heat-exchanger rig field, relates to the flowing of a kind of gap by fluid media (medium) and realizes quick heat-exchanger rig.Heat-exchanger rig is made up of hot box and heat exchanging body, and hot box is made up of casing, upper cover, lower cover; Heat exchanging body is by outer heat exchanging body, interior heat exchanging body, heat filling, O-ring seal, and inlet seal pad, inlet attack, outlet connection, exit seal pad, pad, bolt, nut, test specimen form.Interior heat exchanging body external cylindrical surface and outer heat exchanging body face of cylinder clearance fit, gap length is suitably adjusted to 0.1-1mm according to fluid properties, material properties and working ability, this device has simple to operate, that response is timely, temperature control is accurate, rate temperature change is high feature, improves thermocycling efficiency.
Description
Technical field
The invention belongs to heat-exchanger rig field, relate to the flowing of a kind of gap by fluid media (medium) and realize quick heat-exchanger rig.
Background technology
The performance of electric and electronic product and parts is subject to impact and the restriction of internal temperature, and in practical work process, not only environment temperature changes at any time, and components and parts itself also can generate heat and cause the change of temperature simultaneously, and then have an impact to the serviceability of components and parts.Therefore test products serviceability at different temperature evaluates the whether qualified important evidence of product.As electrotechnical, electronic environmental test standard " high temperature low-temperature test directive/guide " (GBT2424.1-2005) regulation according to China, hot test and low-temperature test need to make product meet certain rate temperature change, this just needs one can realize quick heat exchange, and the heat-exchanger rig that heat exchange rate is controlled.
Current thermocycling is generally completed by high-low temperature test chamber or thermal shock test chamber.This experimental provision has had certain developing history, from three case structures of initial two-box type structure comparative maturity till now.Two-box type structure pre-installs the medium that heat-exchange performance is good, do not affect sample usually in two casings, is generally liquid, and in two casings, medium temperature reaches the design temperature of heating and cooling, and keeps constant temperature.During humid test, test specimen is immersed in a casing, temperature transition is realized in another casing by Transfer Experiment sample.As patent leaf is built out. novel swift electron element thermal shock machine: China, CN202025049U.2011-11-02. has invented a kind of typical two-box type structure, take alcohol as low temperature refrigerant.Therefore two-box type structure has following shortcoming: need mobile device, is unfavorable for on-line measurement, and temperature rate cannot accurately control, and needs test block to immerse in medium.Three case structures improved thus are generally made up of high-temperature cabinet, cryogenic box and chamber, and heat exchange mode adopts usually forces wind circulation.Such as, in hot test, high-temperature cabinet adopts Electric heating, and air heat is passed into test casing to uniform temperature, and test component puts into chamber inside, discharge chamber internal gas simultaneously and loop back high-temperature cabinet and again heat, realize the object of circulating-heating, economize energy.By controlling heating-up temperature and the air circulation speed of air in high-temperature cabinet, the temperature variation requirement of particular requirement can be realized; During low-temperature test, then compression refigerating machine is generally adopted to realize chamber cooling.As document Sun Zhi and, Shi Guoli, Korea Spro Wang send, and hippology shines, Luo Renzhi. novel clamshell doors high/low temperature dynamic test case development [J]. low temperature and superconduction .2006 03 phase are exactly typical three case structure chambers, and document door structure improves.Three box type high/low temperature cold-hot impact tester generally adopt and have employed heat exchange pattern that is three box, wind circulation.The high-low temperature tester of existing employing air heat-exchange mode is limited by low thermal conductivity and the low heat capacity characteristic of air, and temperature becomes the speed of response and temperature-controlled precision is difficult to improve.Meanwhile, for test exemplar, excessive chamber space is easily caused temperature uneven and is improved chamber power consumption.Therefore, three case structures obviously have that volume is large, power consumption is high, the shortcoming that heat exchange efficiency is low, heat loss is large.
Summary of the invention
The technical problem to be solved in the present invention overcomes above defect to provide a kind of rapid heat-exchange device through crack flow of fluid medium, meet the requirement of rate temperature change in thermocycling, be particularly suited for the high/low temperature test experiments of small electric and electronic product, have compact, heat exchange fast, the feature of energy-conserving and environment-protective, simultaneously due to heat-exchanger rig compact conformation, be particularly suitable for desktop type thermocycling experiment device.
The technical scheme that the present invention takes is: a kind of rapid heat-exchange device through crack flow of fluid medium, is characterized in that, heat-exchanger rig is made up of hot box and heat exchanging body, and wherein, hot box is made up of casing 4, upper cover 5, lower cover 6; Heat exchanging body is made up of outer heat exchanging body 1, interior heat exchanging body 2, heat filling 3, O-ring seal 7, inlet seal pad 8, inlet attack 9, outlet connection 10, exit seal pad 11, pad 12, bolt 13, nut 14, test specimen 15;
In hot box, casing 4 is cylindrical, and endoporus is stepped appearance endoporus, is provided with heat exchanging body in the middle part of endoporus, and upper cover 5 is arranged on stepped appearance endoporus top, and on upper cover 53 projections are inserted in casing 43 mounting groove i, and lower cover 6 is arranged on stepped appearance endoporus bottom; The upper part of stepped appearance endoporus has 3 uniform rectangle mounting groove i, and the bottom of mounting groove i respectively has one to go out pore b, goes out pore b and leads to endoporus from box outer surface.
In heat exchanging body, outer heat exchanging body 1 is cylindrical, O-ring seal 7 is arranged in the seal groove g of outer heat exchanging body 1 upper surface, outer heat exchanging body 1 endoporus is divided into face of cylinder h, groove f, the threaded hole of circular conical surface k and lower end four sections, interior heat exchanging body 2 coaxially inserts in outer heat exchanging body 1 endoporus, on interior heat exchanging body 2, on 6 threaded holes of cylinder and outer heat exchanging body 1,6 bolts hole of cylinder align, 12 pads 12 pad on bolt hole uniform with outer heat exchanging body 1 big column lower surface 6 on 6 bolts hole that interior heat exchanging body 2 upper surface is uniform respectively, 6 bolts 13 are each passed through pad 12, interior heat exchanging body 2 bolt hole, outer heat exchanging body 1 bolt hole, be connected respectively with 6 nuts 14 after pad 12, nut 14 upper surface contacts with pad 12 lower surface, interior heat exchanging body 2 external cylindrical surface d and outer heat exchanging body 1 inner cylinder face h transition fit, interior heat exchanging body 2 external cylindrical surface c and outer heat exchanging body 1 inner cylinder face h clearance fit, gap length is according to fluid properties, material properties and working ability are suitably adjusted to 0.1-1mm, interior heat exchanging body 2 outer conical surface j and outer heat exchanging body 1 internal conical surface k clearance fit, gap length is suitably adjusted to 0.1-1mm according to processing conditions, interior heat exchanging body 2 lateral groove e upper end exceeds the bottom surface of the groove f of outer heat exchanging body 1, inlet seal pad 8 is arranged on outer heat exchanging body 1 bottom surface, inlet attack 9 one end external thread is arranged in the threaded hole of outer heat exchanging body 1 lower end, contact with inlet seal pad 8 lower surface, what simultaneously the other end mouth of pipe aligned casing 4 enters pore a, uniform 3 threaded holes in outer heat exchanging body 1 side, threaded hole is passed into groove f side from the side, 3 exit seal pads 11 are arranged on the uniform threaded hole end face of 3 of outer heat exchanging body 1 side respectively, 3 outlet connection 10 one end external threads be arranged on outer heat exchanging body 1 side uniform threaded hole in, with exit seal pad 11 surface contact, simultaneously 3 outlet connection 10 other end pipe adapters go out pore b with 3 of casing 4 respectively and align, test specimen 15 is contained in interior heat exchanging body 2 sample groove m, space heat filling 3 is filled.
A kind of rapid heat-exchange device through crack flow of fluid medium, it is characterized in that, heat filling 3 is the Heat Conduction Material of coefficient of heat conductivity >=0.5W/ (mK), Heat Conduction Material heat conductive silica gel, copper powder, silver powder or fluent material.
Remarkable result of the present invention is: apply a kind of rapid heat-exchange device through crack flow of fluid medium provided by the invention and carry out thermocycling, have simple to operate, response in time, temperature control is accurate, rate temperature change is high, improves thermocycling efficiency.
Accompanying drawing explanation
Fig. 1 is that a kind of master of rapid heat-exchange device through crack flow of fluid medium looks cut-away illustration, and Fig. 2 is the vertical view of Fig. 1, and Fig. 3 is the A-A face cut-open view of Fig. 1, and Fig. 4 is the front view of device heat exchanging body part.Wherein: the outer heat exchanging body of 1-, heat exchanging body in 2-, 3-heat filling, 4-casing, 5-upper cover, 6-lower cover, 7-O-ring seal, 8-inlet seal pad, 9-inlet attack, 10-outlet connection, 11-exit seal pad, 12-pad, 13-bolt, 14-nut, 15-test specimen, a-casing 4 enters pore, b-casing 4 goes out pore, heat exchanging body 2 one section of external cylindrical surface on the lower in c-, one section of external cylindrical surface that in d-, heat exchanging body 2 is top, the groove of heat exchanging body 2 outside surface processing in e-, the groove of f-outer heat exchanging body 1 endoporus side processing, the seal groove of outer heat exchanging body 1 upper surface of g-, the outer heat exchanging body 1 endoporus face of cylinder of h-, mounting groove on i-casing 4, the conical outer surface of heat exchanging body 2 in j-, the cone-shaped inner hole surface of the outer heat exchanging body 1 of k-, m-sample groove.
Fig. 5 is the measured point temperature curve of embodiment, and wherein the unit of horizontal ordinate is t/min, and the unit of ordinate is T/ DEG C.
Embodiment
Enforcement of the present invention is described in detail below in conjunction with technical scheme and accompanying drawing.As shown in accompanying drawing 1,2,3,4, a kind of rapid heat-exchange device through crack flow of fluid medium of this invention is made up of hot box and heat exchanging body, and hot box provides heat exchanging body a heat insulation environment, and wherein heat exchanging body is placed on inside hot box; Heat exchanging body realizes the quick heat exchange to test specimen 15, test specimen 15 is placed in interior heat exchanging body 2 sample cell m, space heat filling 3 is filled, high temperature fluid medium passes into from inlet attack 9, the gap that fluid media (medium) is formed through the conical surface j and k, converge to the slit flow channel of outer heat exchanging body 1 and interior heat exchanging body 2 formation, then converge in outer heat exchanging body 1 groove f through interior heat exchanging body 2 groove e, and flow out from outlet connection 10; High temperature fluid medium is out-of-date in interior heat exchanging body 2 outside surface high velocity stream, heat will be conducted to interior heat exchanging body 2 fast by convection heat transfer' heat-transfer by convection, interior heat exchanging body 2 temperature raises, by heat transfer, heat is delivered to the heat filling 3 of filling in sample cell m, and pass to the test specimen 15 of heat filling 3 inside further, finally realize heat from fluid media (medium) to test specimen 15 quick exchange.
The assembling process of device is: first assemble heat exchanging body, O-ring seal 7 is arranged in the seal groove g of outer heat exchanging body 1 upper surface, interior heat exchanging body 2 coaxially inserts in outer heat exchanging body 1 endoporus, on interior heat exchanging body 2, on 6 threaded holes of cylinder and outer heat exchanging body 1,6 bolts hole of cylinder align, 12 pads 12 pad on bolt hole uniform with outer heat exchanging body 1 big column lower surface six on 6 bolts hole that interior heat exchanging body 2 upper surface is uniform respectively, 6 bolts 13 are each passed through pad 12, interior heat exchanging body 2 bolt hole, outer heat exchanging body 1 bolt hole, pad 12, 6 nuts 14 are arranged on bolt respectively, upper surface contacts with pad 12 lower surface, bolt 13 and nut 14 are tightened and makes interior heat exchanging body 2 and outer heat exchanging body 1 pinch seal circle 7, prevent fluid media (medium) from revealing, outer heat exchanging body 1 endoporus is the threaded hole four sections being divided into face of cylinder h, groove f, circular conical surface k and lower end, and interior heat exchanging body 2 external cylindrical surface d and outer heat exchanging body 1 inner cylinder face h transition fit, play fixation, interior heat exchanging body 2 external cylindrical surface c and outer heat exchanging body 1 inner cylinder face h clearance fit, gap length is suitably adjusted to 0.1-1mm according to fluid properties, material properties and working ability, and gap is less, and under identical flow, flow velocity is larger, and heat transfer rate is faster, interior heat exchanging body 2 outer conical surface j and outer heat exchanging body 1 circular conical surface k clearance fit, gap length is suitably adjusted to 0.1-1mm according to processing conditions, interior heat exchanging body 2 lateral groove e upper end exceeds the bottom surface of the f groove of outer heat exchanging body 1, and this is to enable liquid from gap by converging in groove f after groove e, inlet seal pad 8 is arranged on outer heat exchanging body 1 bottom surface, inlet attack 9 one end external thread is arranged in the threaded hole of outer heat exchanging body 1 lower end, contact with inlet seal pad 8 lower surface, 3 exit seal pads 11 are arranged on the uniform threaded hole end face of three of outer heat exchanging body 1 side respectively, one end external thread of three outlet connections 10 be arranged on outer heat exchanging body 1 side uniform threaded hole in, with exit seal pad 11 surface contact, test specimen 15 is contained in interior heat exchanging body 2 sample groove m, and space heat filling 3 is filled,
The enter mouth of pipe a of fluid inlet line by casing 4 is connected with heat exchanging body inlet attack 9 pipe adapter, 3 export pipelines are connected with three outlet connection 10 pipe adapters of heat exchanging body by the outlet mouth of pipe b of casing 4, heat exchanging body is inserted in casing 4,3 outlet connections 10 will with 3 of a casing 4 uniform mounting groove i to upper, what make inlet attack 9 pipe adapter align casing (4) enters mouth of pipe a, fills in upper cover 5 and lower cover 6.
Example 1 is that employing micro fuel cell carries out fluid media (medium) gap and to flow quick heat transfer experiments.According to above embodiment, as shown in accompanying drawing 1,2, fuel cell is positioned in interior heat exchanging body 2 sample groove m, with copper powder as heat filling 3, outer heat exchanging body 1 endoporus and interior heat exchanging body 2 outside surface tolerance clearance are for being 0.1mm, 70 DEG C of hot water are connected inlet attack 9, and hot water is drawn by outlet connection 10, measures the temperature of fuel cell upper surface.Accompanying drawing 3 is test specimen 15 temperature variation curves obtained, and can find out, the heating rate of test specimen can reach 10 DEG C/min, can be implemented in temperature transition in a few minutes completely.
A kind of rapid heat-exchange device through crack flow of fluid medium of the present invention, achieves under specific experimental conditions, carries out the quick heat transfer experiments of test specimen.The present invention is flowed in the fluid media (medium) gap to test specimen quick heat transfer experiments, have the advantages that test efficiency is high, simple to operate, practical, the heat transfer experiments of test specimen can be completed fast, for the thermocycling of test specimen provides possible ways, for temperature fatigue test provides test platform.
Claims (2)
1. a rapid heat-exchange device through crack flow of fluid medium, is characterized in that, heat-exchanger rig is made up of hot box and heat exchanging body, and wherein, hot box is made up of casing (4), upper cover (5), lower cover (6); Heat exchanging body is made up of outer heat exchanging body (1), interior heat exchanging body (2), heat filling (3), O-ring seal (7), inlet seal pad (8), inlet attack (9), outlet connection (10), exit seal pad (11), pad (12), bolt (13), nut (14), test specimen (15);
In hot box, casing (4) is for cylindrical, endoporus is stepped appearance endoporus, in the middle part of endoporus, heat exchanging body is installed, upper cover (5) is arranged on stepped appearance endoporus top, make 3 projections on upper cover (5) be inserted into casing (4) 3 mounting grooves (i) in, lower cover (6) is arranged on stepped appearance endoporus bottom; The upper part of stepped appearance endoporus has 3 uniform rectangle mounting grooves (i), and mounting groove bottom (i) respectively has one to go out pore (b), goes out pore (b) and leads to endoporus from casing (4) outside surface;
In heat exchanging body, outer heat exchanging body (1) is for cylindrical, O-ring seal (7) is arranged in the seal groove (g) of outer heat exchanging body (1) upper surface, outer heat exchanging body (1) endoporus is divided into the face of cylinder (h), groove (f), the threaded hole of circular conical surface (k) and lower end four sections, interior heat exchanging body (2) coaxially inserts in outer heat exchanging body (1) endoporus, 6 threaded holes of the upper cylinder of interior heat exchanging body (2) and 6 bolts hole of the upper cylinder of outer heat exchanging body (1) align, 12 pads (12) are padded on bolt hole uniform with outer heat exchanging body (1) big column lower surface 6 on 6 bolts hole that interior heat exchanging body (2) upper surface is uniform respectively, 6 bolts (13) are each passed through pad (12), interior heat exchanging body (2) bolt hole, outer heat exchanging body (1) bolt hole, pad (12) is connected respectively with 6 nuts (14) afterwards, nut (14) upper surface contacts with pad (12) lower surface, interior heat exchanging body (2) external cylindrical surface (d) and outer heat exchanging body (1) inner cylinder face (h) transition fit, interior heat exchanging body (2) external cylindrical surface (c) and outer heat exchanging body (1) inner cylinder face (h) clearance fit, gap length is according to fluid properties, material properties and working ability are suitably adjusted to 0.1-1mm, interior heat exchanging body (2) outer conical surface (j) and outer heat exchanging body (1) internal conical surface (k) clearance fit, gap length is suitably adjusted to 0.1-1mm according to processing conditions, interior heat exchanging body (2) lateral groove (e) upper end exceeds the bottom surface of outer heat exchanging body (1) groove (f), inlet seal pad (8) is arranged on outer heat exchanging body (1) bottom surface, inlet attack (9) one end external thread is arranged in the threaded hole of outer heat exchanging body (1) lower end, contact with inlet seal pad (8) lower surface, what simultaneously the other end mouth of pipe aligned casing (4) enters pore (a), uniform 3 threaded holes in outer heat exchanging body (1) side, threaded hole is passed into groove (f) side from the side, 3 exit seal pads (11) are arranged on the uniform threaded hole end face of 3 of outer heat exchanging body (1) side respectively, 3 outlet connection (10) one end external threads be arranged on outer heat exchanging body (1) side uniform threaded hole in, with exit seal pad (11) surface contact, simultaneously 3 outlet connection (10) other end pipe adapters go out pore (b) with 3 of casing (4) respectively and align, test specimen (15) is contained in interior heat exchanging body (2) sample groove (m), space heat filling (3) is filled.
2. a kind of rapid heat-exchange device through crack flow of fluid medium according to claim 1, it is characterized in that, the Heat Conduction Material that heat filling (3) is coefficient of heat conductivity >=0.5W/ (mK), Heat Conduction Material is heat conductive silica gel, copper powder, silver powder or fluent material.
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| CN201310303014.6A CN103472323B (en) | 2013-07-18 | 2013-07-18 | A kind of rapid heat-exchange device through crack flow of fluid medium |
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| CN104568185B (en) * | 2014-12-10 | 2017-03-01 | 中国航天科技集团公司第六研究院第十一研究所 | High temperature bleeder temperature-measuring gun |
| CN107271904A (en) * | 2017-05-24 | 2017-10-20 | 苏州宇量电池有限公司 | Measuring device for heat yield during circulating battery |
| CN107524579A (en) * | 2017-09-26 | 2017-12-29 | 安徽万瑞冷电科技有限公司 | A kind of cryogenic pump |
| CN113446800B (en) * | 2020-03-24 | 2022-05-31 | 合肥华凌股份有限公司 | Fresh-keeping device and refrigerator |
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| CN2094022U (en) * | 1991-04-13 | 1992-01-22 | 尹华相 | Tubular heat-exchanger |
| JPH07270303A (en) * | 1994-04-01 | 1995-10-20 | Katoo:Kk | Environment tester |
| US5499277A (en) * | 1994-08-19 | 1996-03-12 | General Electric Company | Method and apparatus for enhancing reactor air-cooling system performance |
| JP3619345B2 (en) * | 1997-04-14 | 2005-02-09 | 株式会社日本マイクロニクス | Circuit board support, circuit board inspection method, and circuit board inspection apparatus |
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