CN101932889B - A temperature controlling gravity heat pipe - Google Patents
A temperature controlling gravity heat pipe Download PDFInfo
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- CN101932889B CN101932889B CN2007801000261A CN200780100026A CN101932889B CN 101932889 B CN101932889 B CN 101932889B CN 2007801000261 A CN2007801000261 A CN 2007801000261A CN 200780100026 A CN200780100026 A CN 200780100026A CN 101932889 B CN101932889 B CN 101932889B
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- Prior art keywords
- heat pipe
- pipe
- condensation segment
- temperature controlling
- temperature
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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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
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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
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/06—Control arrangements therefor
Abstract
A temperature controlling gravity heat pipe (2) comprises an evaporation section (21), a condensation section (22), a cut-off pipe (24) and an elastic corrugated pipe (25). A cut-off valve port (23) is formed in the condensation section (22). The open end of the cut-off pipe (24) is situated under the valve port (23) and provided with a cut-off flange (244), which can fit the valve port (23) hermetically. The temperature controlling gravity heat pipe (2) can prevent the temperature of cold source from rising continuously when the temperature of the heat pipe (2) is higher than a set value.
Description
Technical field
The present invention relates to a kind of heat pipe, is a kind of controlled temperature controlling gravity heat pipe that heats pipework condensation section temperature specifically.
Background technology
Heat pipe is a kind of high-performance heat transfer components, and advantages such as heat transfer efficiency height, temperature are even, simple in structure because it has, reliable operation are used widely in various occasions.Gravity assisted heat pipe is one type of wherein simple, that effect is the highest heat pipe, is being widely used in field of solar energy.Heat pipe is when work; Can be divided into evaporator section, adiabatic section and three zones of condensation segment; The heat transfer medium that is in evaporator section absorbs the heat of thermal source through thermotube wall and explosive evaporation is a steam, and this steam arrives condensation segment through the adiabatic section heat is passed to low-temperature receiver through heat pipe wall, and heat transfer medium is condensed into liquid and relies on gravity to flow back to evaporator section; Circulation is delivered to low-temperature receiver with heat from thermal source so continuously.In the course of work of this tradition gravity assisted heat pipe, continuous heat transferred low-temperature receiver with thermal source is to the not restriction of heat transfer temperature of heat transfer medium.In actual use, low-temperature receiver receives the restriction of certain condition, often can not unrestrictedly heat; For example, in hot pipe type solar heat collector, the heat that thermal-collecting tube absorbs constantly passes to heat-exchanging water tank through gravity assisted heat pipe; Reaching the purpose of the water in the heating water tank, but when sunshine is very strong, constantly transmit heat through gravity assisted heat pipe; Water in the water tank can seethe with excitement, and adds the large water tank internal pressure, if unrestrictedly heating; Might cause water tank to burst apart, or water inlet, delivery port collapsed out, abnormally dangerous.
Therefore, if gravity assisted heat pipe unrestrictedly transmits heat, will have hidden danger.
Can not control the defective of temperature for overcoming above-mentioned traditional gravity assisted heat pipe, abroad the someone proposes a kind of Temp.-controlled heat pipe.Its structure does, is provided with choke cover in the condensation segment of heat pipe, and is provided with common spring in the lower end of this choke cover, and end is provided with memory alloy spring on it, and this memory alloy spring has memory function, preestablishes to work after it is higher than uniform temperature.When the temperature in the heat pipe was lower than this design temperature, memory alloy spring did not have elasticity, and common spring is in original state, and choke cover does not contact with heat pipe, and heat transferring medium is in circulation status, the heat pipe operate as normal in the heat pipe.When the temperature in the heat pipe reached design temperature, choke cover was depressed in its effect of memory alloy spring, below condensation segment, made it can't be with the heat transferred low-temperature receiver heat transfer medium blocking-up, thus the temperature of control low-temperature receiver, and at this moment, common spring is in compressive state.When the temperature of low-temperature receiver is lower than design temperature, when promptly the condensation segment temperature is lower than design temperature, memory alloy spring forfeiture elasticity, choke cover is in original state under common spring action, and heat pipe works on.
Though above-mentioned existing temperature controlling gravity heat pipe can effectively be controlled the temperature of heat pipe condenser section; Played preventing water tank because of overheated effect of bursting apart, but had following defective: (1) is because this Temp.-controlled heat pipe temperature control is to realize with following at condensation segment through the heat-exchange working medium blocking-up with vapor state, when the temperature of thermal source is higher; Heat-exchange working medium constantly absorbs heat; But owing to the blocking-up of choke cover can not pass heat, thereby cause increase in temperature in the heat pipe, the heat pipe internal pressure increases.Phenomenons such as choke cover is collapsed out, tube wall bursts apart may take place in heat pipe under strong pressure, therefore, also have hidden danger.(2) owing to need to adopt memory alloy spring realize its block function, and the price of memory alloy spring is very expensive on the market, causes this Temp.-controlled heat pipe cost higher, is difficult to widespread usage.
For solving the defective that above-mentioned Temp.-controlled heat pipe exists, the patent No. is that the Chinese utility model patent of 02231511.X has proposed a kind of Temp.-controlled heat pipe 100.Its structure such as Fig. 1-shown in Figure 2; Comprise the intercepting sewer 102 of condensation segment 101 porch that are connected heat pipe 100, still be provided with one or more cycle fluid refluxing opening 103, on this refluxing opening 103, be provided with temperature control bimetal leaf or memorial alloy sheet 104 at intercepting sewer 102; One end of this bimetal leaf or memorial alloy sheet 104 is connected on the intercepting sewer 102; Can be connected with spring 106 between the other end and the condensation segment, when the temperature in the heat pipe 100 reached the deformation temperature of bimetal leaf or memorial alloy sheet 104, the free end of this bimetal leaf or memorial alloy sheet 104 was in the position that refluxing opening 103 is closed (as shown in Figure 2); Thereby stop the liquid heat transfer medium in the condensation segment 101 to be back to evaporator section; After a period of time, the heat transfer medium in the heat pipe evaporator section 105 all is evaporated to condensation segment 101 like this, is condensed into liquid back and is blocked in the condensation segment by bimetal leaf or memorial alloy sheet; Evaporator section 105 is interior owing to there is not heat transfer medium; Thereby can not be with heat transferred condensation segment 101, can't continue to obtain heat with the low-temperature receiver of condensation segment 101 heat exchange, thereby control the temperature of low-temperature receiver.After a period of time; When the temperature in the condensation segment 101 is reduced to the deformation temperature that is lower than bimetal leaf or memorial alloy sheet 104; This bi-metal plate deformed is left refluxing opening 103, and perhaps memorial alloy sheet 104 is inoperative, under the effect of spring 106, leaves refluxing opening 103, thereby makes refluxing opening 103 be in open mode; Liquid heat transfer medium in the condensation segment 101 flows back in the evaporator section 105, proceeds the heat exchange circulation.
Thereby the Temp.-controlled heat pipe 100 that provides at the Chinese utility model patent of this 02231511.X is owing to be to flow back to evaporator section 105 through the liquid heat-exchange working medium that stops condensation segment 101 to stop low-temperature receivers to continue to heat up, thereby efficiently solves the heat-exchange working medium blocking-up of above-mentioned employing choke cover blocking-up vapor state and problem such as the choke cover that causes is collapsed out, tube wall bursts apart.But still there is following problem in this Temp.-controlled heat pipe: 1) because temperature control bimetal leaf or memorial alloy sheet 104 are arranged in the condensation segment 101, be in closed state in the heat pipe 101; In case chosen the setting deformation temperature of memorial alloy sheet 104; After processing Temp.-controlled heat pipe, the maximum temperature that the low-temperature receiver that this Temp.-controlled heat pipe 100 is controlled can reach has just been confirmed, can't have been regulated according to actual conditions; But in the actual use of heat pipe; Different use occasions and service time have the different temperature regulatory demand, and this Temp.-controlled heat pipe 100 can't satisfy the adjusting requirement of carrying out maximum temperature as required, thereby have limited its extensive use.2) though the cost of bimetal leaf or memorial alloy sheet is lower than the cost of memory alloy spring; But because the cost itself of bimetal leaf or memory alloy material is just than higher; The manufacturing cost of this bimetal leaf or memorial alloy sheet is still much higher than adopting common material, gets widespread usage thereby also restricted this Temp.-controlled heat pipe.
Summary of the invention
The objective of the invention is to, a kind of temperature controlling gravity heat pipe is provided, it can block the backflow of liquid heat transfer medium when the heat pipe condenser section temperature is higher than setting value, thereby stops the lasting rising of sink temperature, and reliable operation, and cost is low.
The present invention also aims to, a kind of temperature controlling gravity heat pipe is provided, it can change elastic component as required at any time, thereby regulates the temperature of damming of temperature controlling gravity heat pipe, makes it be applicable to the temperature control demand of multiple different low-temperature receivers.
The inventor is through the discovery that studies for a long period of time, and there are certain corresponding relation in pressure and temperature in the heat pipe, and the temperature in the heat pipe is high more, and pressure is just big more, referring to shown in Figure 3.Particularly when the height that reaches more than 300 degrees centigrade, the less variation of temperature, pressure just can produce bigger variation.If can change the backflow of the liquid heat transfer medium of controlling heat pipe condenser section according to the pressure in the heat pipe, then can realize the temperature control of opposite heat tube temperature.
Above-mentioned purpose of the present invention can adopt following technical scheme to realize:
A kind of temperature controlling gravity heat pipe, this temperature controlling gravity heat pipe comprises:
Evaporator section;
Condensation segment has opening in the upper end of this condensation segment, and in this condensation segment, is formed with the valve port that dams;
Intercepting sewer is arranged in the condensation segment, one of which end sealing and the other end is uncovered, and on tube wall, be provided with a plurality of pores, wherein the opening end of this intercepting sewer is positioned at the valve port below of condensation segment, and has the flange that dams that cooperates with said sealing valve port;
Elastic bellows is connected between the upper end opening of blind end and condensation segment of intercepting sewer, to form vacuum seal.
In the present invention, on the opening of the upper end of said condensation segment, be covered with end cap, on this end cap, be provided with passage, so that elastic bellows volume inside and atmosphere.
In the present invention, as the optional embodiment of another one, between the blind end of said end cap and intercepting sewer, be provided with flexible member.
In the present invention, on described intercepting sewer blind end, be connected with a guide post, on said end cap, be provided with pilot hole, an end of this guide post passes the pilot hole on the end cap and stretches out in outside the end cap.
In the present invention, on the guide post of said end cap inboard, be provided with the first spacing catch.
In the present invention, on the guide post in the said end cap outside, be provided with the second spacing catch.
In the present invention, described gravity assisted heat pipe is a reduced pipe, and wherein the caliber of condensation segment is greater than the evaporator section caliber.
In the present invention, described gravity assisted heat pipe be positioned at condensation segment first the pipe, be positioned at evaporator section second the pipe and connect this first the pipe and second the pipe tube connector be formed by connecting.
In the present invention, the lower end of described first pipe inwardly turns down the formation in-flanges, limits described valve port by this in-flanges.
In the present invention, have flat sealing surface on the lower surface of the in-flanges of the described first pipe lower end, the upper surface of the described flange that dams also has the flat sealing surface that cooperates with lower surface this in-flanges.
In the present invention, the described flange that dams is made up of the flanging that the intercepting sewer lower end outwards turns down.
In the present invention, described elastic bellows is tin-phosphor bronze bellows or corrugated stainless steel tubing.
Said structure of the present invention, temperature in heat pipe raises, during the pressure that makes steam in the heat pipe act on the intercepting sewer blind end receives greater than this blind end the pressure opposite with steam pressure; Elastic bellows between intercepting sewer and the condensation segment is by upwards compression; The flange that dams of intercepting sewer lower end is moved upwards up to the position that cooperates with sealing valve port, and with the valve port sealing, the liquid heat transfer medium that is condensed in the condensation segment is dammed in condensation segment; Can't get back to evaporator section; Thereby stoped the low-temperature receiver of heat transfer medium, stoped the persistently overheating of low-temperature receiver, avoided the situation that low-temperature receiver bursts apart because of the transition heating to take place the heat transferred condensation segment of evaporator section; When the temperature of heat pipe condenser section is reduced to setting value; During the pressure that makes steam act on the intercepting sewer blind end receives less than this blind end the pressure opposite with steam pressure, intercepting sewer moves down, and the flange that dams leaves valve port; Make that trapped liquid heat transfer medium flow in the heat pipe evaporator section through valve port in the condensation segment; Thereby heat pipe begins operate as normal, proceeds heat exchange circulation, and the low-temperature receiver of condensation segment is heated.So circulation, thus realize the temperature control of opposite heat tube, the temperature of heat pipe is controlled under the design temperature that low-temperature receiver allows, thereby has eliminated hidden danger.
In the present invention; Owing to be to change the backflow of controlling the liquid heat transfer medium in the condensation segment through the pressure that variations in temperature causes; Thereby adopt elastic bellows and the structure that is sealed and matched of dam flange and valve port can realize the temperature control of opposite heat tube; Not only simple in structure, reliable operation, and avoided adopting expensive memory alloy material, cost greatly reduced.Particularly; After being connected with flexible member between end cap and the intercepting sewer blind end; Can open end cap and come to change at any time flexible member with different coefficient of elasticity; Thereby can regulate the force-bearing situation of intercepting sewer blind end, make this temperature controlling gravity heat pipe can have the different temperature of damming as required, to adapt to the different temperature control demands of low-temperature receiver.
Description of drawings
Fig. 1 is the structural representation that a kind of existing temperature controlling gravity heat pipe is in normal operating conditions;
Fig. 2 is the structural representation that a kind of existing temperature controlling gravity heat pipe is in current floe condition;
Fig. 3 is temperature and the pressure mapping table that adopts dried saturated steam in the heat pipe, and wherein the unit of temperature t and pressure p is respectively: temperature ℃, pressure (P * 10
-5) Pa;
Fig. 4 is the normal operating conditions structural representation of first embodiment of the present invention;
Fig. 5 is the current floe condition sketch map of first embodiment of the present invention;
Fig. 6 is the normal operating conditions structural representation of second embodiment of the invention;
Fig. 7 is the current floe condition sketch map of second embodiment of the invention.
The specific embodiment
Like Fig. 4-shown in Figure 7, temperature controlling gravity heat pipe 2 of the present invention comprises evaporator section 21 and condensation segment 22, have opening 221 in the upper end of this condensation segment 22, and the bottom in this condensation segment 22 is formed with the valve port 23 that dams.This temperature controlling gravity heat pipe 2 also includes intercepting sewer 24; Be arranged in the condensation segment 22; One of which end enclosed shape becomes blind end 241; And the uncovered opening end 242 that forms of the other end, and on the tube wall of this intercepting sewer 24, be provided with a plurality of pores 243, so that the gaseous heat-transfer medium in the evaporator section 21 enters in the condensation segment 22 through this pore 243.Wherein the opening end 242 of this intercepting sewer 24 is positioned at valve port 23 belows of condensation segment 22, and has the flange 244 that dams that is sealed and matched with said valve port 23.And; Between the upper end opening 221 of the blind end 241 of this intercepting sewer 24 and condensation segment 22, also be connected with an elastic bellows 25; Form vacuum seal, thereby with the sealing from intercepting sewer 24 blind ends 241 to the space the open upper end 221 in the condensation segment 22, and required elastic force is provided.The port of this elastic bellows 25 and atmosphere.
When the heat pipe operate as normal; The flange 244 that dams on intercepting sewer 24 opening ends 242 separates with valve port 23; Heat transfer medium is heated at evaporator section 21 and is evaporated to gaseous state in the heat pipe 2; And enter into condensation segment 22 through the pore on the intercepting sewer 24 243, and carry out being condensed into liquid state after the heat exchange at condensation segment 22 and low-temperature receiver, thereby flowing back into evaporator section 21 through valve port 23, this liquid heat transfer medium forms the heat exchange circulation; The low-temperature receiver at heat transferred condensation segment 22 places that constantly evaporator section 21 absorbed is like Fig. 4, shown in Figure 6; Temperature in heat pipe 2 is higher than setting value; When making pressure that steams in the heat pipe 2 act on intercepting sewer 24 blind ends 241 greater than this blind end 241 pressure opposite with steam pressure that receive, the elastic bellows 25 between intercepting sewer 241 and the condensation segment 22 is upwards compressed, and the flange 244 that dams of intercepting sewer 24 lower ends is moved upwards up to the position that is sealed and matched with valve port 23; With valve port 23 sealings (like Fig. 5, shown in Figure 7); Thereby the liquid heat transfer medium that is condensed in the condensation segment 22 is dammed in condensation segment 22, can't get back to evaporator section 21, has blocked the heat exchange circulation of heat transfer medium; Thereby stop or reduced the low-temperature receiver that heat transfer medium constantly passes to heat condensation segment 22 places; Thereby avoided the persistently overheating of low-temperature receiver, and avoided the phenomenon that low-temperature receiver bursts apart because of the transition heating to take place, opposite heat tube 2 has played the temperature control effect.After continuing a period of time, the temperature in the evaporator section 21 descends, and the steam pressure in the heat pipe 2 reduces; When making upward pressure that steams in the heat pipe 2 act on intercepting sewer 24 blind ends 241 less than this blind end 241 pressure opposite that receive with steam pressure; Intercepting sewer 24 moves down, and the flange 244 that dams leaves valve port 23, and the liquid heat transfer medium in the condensation segment 22 is flow back in the evaporator section 21; Proceed the heat exchange circulation, heat pipe 2 begins operate as normal again.
In above-mentioned temperature control process; Owing to be to change the backflow of controlling the liquid heat transfer medium in the condensation segment 22 through the pressure that variations in temperature causes; Thereby the structure that is sealed and matched of employing elastic bellows 25 and dam flange 244 and valve port 23 can realize the temperature control of opposite heat tube 2; Not only simple in structure, reliable operation, and avoided adopting expensive memory alloy material, cost greatly reduced.
In the present invention; Like Fig. 4-shown in Figure 7; On the upper end of said condensation segment 22 opening 22, can further be provided with end cap 26; On this end cap 26, be provided with passage 261, thereby make space and atmosphere in the elastic bellows 25, atmospheric pressure can be acted on the blind end 241 of intercepting sewer 24 through this passage 261.
Need to prove that the upper and lower among the present invention is to the direction that is meant on the drawing shown in Fig. 4-7, and do not represent the placement direction of the heat pipe of actual working state.
Come to explain in more detail the present invention with several specific embodiments below.
Embodiment 1
Like Fig. 4, shown in Figure 5; In the present embodiment, this temperature controlling gravity heat pipe 2 by heat pipe with condensation segment 22 and evaporator section 21, be arranged on the intercepting sewer 24 in the condensation segment 22 and be connected the open upper end of condensation segment 22 and the elastic bellows 25 between the intercepting sewer 24 constitutes.End cap 26 can be provided with or not be provided with as required, and Fig. 4, Fig. 5 show the situation with end cap 26.This end cap 26 can be the metal end with passage 261.
In the present embodiment; Open-ended 221 of the upper end of elastic bellows 25 and condensation segment 22 salablely welds together; The lower end of this elastic bellows 25 can be connected together with upper end closed end 241 seal welds of intercepting sewer 24; Thereby make elastic bellows 25 outer spaces form the heat pipe condenser section 22 that is communicated with through valve port 23 with heat pipe evaporator section 21, and space and atmosphere in the elastic bellows 25 can be applied on the blind end 241 of intercepting sewer 24 atmospheric pressure.
Like Fig. 4, shown in Figure 5, the blind end 241 of this intercepting sewer 24 can constitute through sealing welding one plug on the port of intercepting sewer 241.
In an embodiment, described heat pipe 2 can be reduced pipe, and wherein the caliber of condensation segment 22 is greater than evaporator section 21 calibers.This heat pipe 2 can be specifically be formed by connecting first pipe 201 that is positioned at condensation segment 22, the tube connector 203 that is positioned at second pipe 202 of evaporator section 21 and connects this first pipe, 201 and second pipe 202.This tube connector 203 is the horn-like pipe of port greater than lower port, and its port and 201 seal welds of first pipe are connected together, and its lower port and 202 seal welds of second pipe are connected together, thereby form the heat pipe 2 with enclosure space.Metal end 26 can be threadedly connected on the open upper end 221 of first pipe 201.
In the present embodiment, the lower end of described first pipe 201 can inwardly turn down the formation in-flanges, limits described valve port 23 by this in-flanges, and is not only simple in structure, and makes the structure of this valve port 23 more stable, durable.Can certainly form this valve port 23 through welding annular lip on condensation segment 22 inwalls as required.
In the present embodiment; Has flat sealing surface on the lower surface 231 of the in-flanges of described first pipe 201 lower ends; The upper surface of the described flange 244 that dams also has the flat sealing surface 245 that cooperates with lower surface this in-flanges; Thereby when the upper surface of this flange 244 that dams contacts with the lower surface of the in-flanges that forms valve port 23, can form reliable sealing, prevent that liquid heat transfer medium from flowing out.
In the present embodiment, the described flange 244 that dams is made up of the flanging that intercepting sewer 24 lower ends outwards turn down.
In the present embodiment, described elastic bellows 25 can be tin-phosphor bronze bellows or corrugated stainless steel tubing.
In the present embodiment; When heat pipe is not worked; There is not steam pressure in the heat pipe; This elastic bellows 25 is in extended state under downward atmospheric pressure and gravity effect, and the elastic force of elastic bellows 25 and atmospheric pressure and gravitational equilibrium, and the flange 244 that dams this moment has a segment distance apart from valve port 23.When the heat pipe operate as normal; The blind end 241 of intercepting sewer 24 receives steam and upwards pressure, and intercepting sewer 24 moves upward, and elastic bellows 25 pressurizeds are in compressive state; Produce the elastic force of antagonism steam pressure downwards; Temperature in heat pipe reaches (for example 150 degrees centigrade) before the design temperature, and when the steam pressure that makes progress and downward elastic force, atmospheric pressure and gravity reached balance, the flange 244 that dams still left valve port 23 (as shown in Figure 4); Heat transfer medium carries out normal heat exchange circulation, the low-temperature receiver at heat transferred condensation segment 22 places that constantly evaporator section 21 absorbed.Continuous rising along with sink temperature; When the temperature in the heat pipe 2 was elevated to the set-point temperature value, the steam pressure in the heat pipe also increased to elastic force, atmospheric pressure and gravity greater than downward elastic bellows 25, intercepting sewer 24 was moved upward to dam the position of flange 244 with valve port 23 sealings; With valve port 23 sealings (as shown in Figure 5); The liquid heat transfer medium that is condensed in the condensation segment 22 is dammed in condensation segment 22, can't get back to evaporator section 21, in evaporator section 21, all flows to condensation segment 22 after all liquid heat transfer medium vaporizations; Thereby blocked the heat exchange circulation of heat transfer medium; Thereby avoided the persistently overheating of low-temperature receiver, and avoided the phenomenon that low-temperature receiver bursts apart because of the transition heating to take place, opposite heat tube 2 has played the temperature control effect.After continuing a period of time, the temperature in the evaporator section 21 descends, and the steam pressure in the heat pipe 2 reduces; When making upward pressure that steams in the heat pipe 2 act on intercepting sewer 24 blind ends 241 less than downward elastic force, atmospheric pressure and gravity; Intercepting sewer 24 moves down, and the flange 244 that dams leaves valve port 23, and the liquid heat transfer medium in the condensation segment 22 is flow back in the evaporator section 21; Proceed the heat exchange circulation, heat pipe 2 beginning operate as normal.So circulation, the heating-up temperature of 2 pairs of low-temperature receivers of heat pipe always is controlled under the design temperature, thereby plays the temperature control effect of opposite heat tube 2.
Embodiment 2
Like Fig. 6, shown in Figure 7, the basic structure of present embodiment is identical with embodiment 1, repeats no more at this.The main distinction of present embodiment and embodiment 1 is, in the present embodiment, between the blind end 241 of said end cap 26 and intercepting sewer 24, is provided with flexible member 27.This flexible member 27 can specifically adopt spring, and the one of which end can be connected on the end cap 26, and the other end is connected on the blind end 241 of intercepting sewer 24, thereby when heat pipe is worked, intercepting sewer 24 is produced downward elastic force.
Like this; In the present embodiment; During the heat pipe operate as normal; The downward active force that intercepting sewer 24 receives is the elastic force+atmospheric pressure+gravity of the elastic force+flexible member 27 of elastic bellows 25, and intercepting sewer 24 receives upwards pressure and act on the pressure on the plug of blind end 241 for the heat pipe inner vapor.During the heat pipe operate as normal; The poised state that those power reach, the flange 244 that dams on the intercepting sewer 24 leaves valve port 23, makes valve port 23 be in open mode; Liquid heat transfer medium in the condensation segment 22 flow into evaporator section 21 through this valve port; And the steam of evaporator section 21 evaporations enters into condensation segment 22 through the pore on the intercepting sewer 24 243, forms the heat exchange circulation, and is as shown in Figure 5.When the temperature in the heat pipe reaches setting value; Steam pressure in the heat pipe increases to the downward power that receives greater than intercepting sewer 24, makes intercepting sewer 24 move upward, and the flange 244 that dams reaches the position of valve port 23; With valve port 23 sealings; Block the path that flows back to of liquid heat transfer medium in the condensation segment 22, thereby the heat exchange circulation of blocking-up heat transfer medium stops the lasting rising of sink temperature.After continuing a period of time, the temperature in the evaporator section 21 descends, and the steam pressure in the heat pipe 2 reduces; Make when steams in the heat pipe 2 act on the upward pressure of intercepting sewer 24 blind ends 241 less than the elastic force+atmospheric pressure of the elastic force+flexible member 27 of downward elastic bellows 25+gravity; Intercepting sewer 24 moves down, and the flange 244 that dams leaves valve port 23, and the liquid heat transfer medium in the condensation segment 22 is flow back in the evaporator section 21; Proceed the heat exchange circulation, heat pipe 2 beginning operate as normal.So constantly circulation, the temperature control of realization opposite heat tube.
In the present embodiment; Because being the elastic force+atmospheric pressure+gravity by the elastic force+flexible member 27 of elastic bellows 25, downward power constitutes; Through changing the coefficient of elasticity of flexible member 27; Can when intercepting sewer 24 is in same position, change this downward amount of force, thereby change the maximum temperature of the heat pipe that makes valve port 23 sealings.And, in the present embodiment because flexible member 27 is arranged on and the blind end 241 of the end cap 26 of atmosphere and intercepting sewer 24 between the space in, when opening end cap 26 and change flexible members 27, can not produce any influence by the interior enclosure space of opposite heat tube.Like this; Can be according to the variation of high design temperature of different low-temperature receivers; Easily through changing for example spring of flexible member 27; Adapt to different temperature control demands, make heat pipe of the present invention become the adjustable temperature controlling gravity heat pipe of temperature, for the wide popularization and application of temperature controlling gravity heat pipe provides advantage.
Like Fig. 6, shown in Figure 7; In the present embodiment; On the blind end 241 of described intercepting sewer 24, can be connected with a guide post 28; On said end cap 26, be provided with pilot hole 262, an end of this guide post 28 passes the pilot hole 262 on the end cap 26 and stretches out in outside the end cap 26, thereby when intercepting sewer 24 moves up and down, plays guide effect.In the present embodiment, when avoiding intercepting sewer 24 to move upward, receive excessive steam pressure and cause the distortion of valve port 23, on the inboard guide post 28 of said end cap 26, be provided with the first spacing catch 281.This first spacing catch 281 can support and end on the medial surface of end cap 26, and the moving displacement that intercepting sewer 24 is made progress plays position-limiting action.In the present embodiment, equally, on the guide post 28 in said end cap 26 outsides, be provided with the second spacing catch 282 in order to limit the downward displacement of this intercepting sewer 24.
This structure that guide post 28, the first spacing catch 281 and the second spacing catch 282 are set equally also can be used for being not described in detail at this among the embodiment 1.
The foregoing description among the present invention only is used to explain the present invention, but not is used to limit the present invention.For example; The valve port 23 among the present invention and the structure that is sealed and matched of the flange 244 that dams; Except the end face seal structure described in the embodiment, also can adopt the valve port 23 and the flange 23 that dams to be the conical surface seal fit structure of taper, also can adopt other structure certainly; As long as can not do concrete restriction in the present invention with valve port 23 sealings when the flange 244 that dams arrives shutoff position.
Claims (12)
1. temperature controlling gravity heat pipe, this temperature controlling gravity heat pipe comprises:
Evaporator section;
Condensation segment has opening in the upper end of this condensation segment, and in this condensation segment, is formed with the valve port that dams;
Intercepting sewer is arranged in the condensation segment, one of which end sealing and the other end is uncovered, and on tube wall, be provided with a plurality of pores, wherein the opening end of this intercepting sewer is positioned at the valve port below of condensation segment, and has the flange that dams that cooperates with said sealing valve port;
Elastic bellows is connected between the upper end opening of blind end and condensation segment of intercepting sewer.
2. temperature controlling gravity heat pipe as claimed in claim 1 is characterized in that, on the opening of the upper end of said condensation segment, is covered with end cap, on this end cap, is provided with passage.
3. temperature controlling gravity heat pipe as claimed in claim 2 is characterized in that, between the blind end of said end cap and intercepting sewer, is provided with flexible member.
4. like claim 2 or 3 described temperature controlling gravity heat pipes, it is characterized in that, on described intercepting sewer blind end, be connected with a guide post, on said end cap, be provided with pilot hole, an end of this guide post passes the pilot hole on the end cap and stretches out in outside the end cap.
5. temperature controlling gravity heat pipe as claimed in claim 4 is characterized in that, on the guide post of said end cap inboard, is provided with the first spacing catch.
6. temperature controlling gravity heat pipe as claimed in claim 5 is characterized in that, on the guide post in the said end cap outside, is provided with the second spacing catch.
7. temperature controlling gravity heat pipe as claimed in claim 1 is characterized in that, described heat pipe is a reduced pipe, and wherein the caliber of condensation segment is greater than the evaporator section caliber.
8. temperature controlling gravity heat pipe as claimed in claim 7 is characterized in that, described heat pipe be positioned at condensation segment first the pipe, be positioned at evaporator section second the pipe and connect this first the pipe and second the pipe tube connector be formed by connecting.
9. temperature controlling gravity heat pipe as claimed in claim 8 is characterized in that, the lower end of described first pipe inwardly turns down the formation in-flanges, limits described valve port by this in-flanges.
10. temperature controlling gravity heat pipe as claimed in claim 9 is characterized in that, has flat sealing surface on the lower surface of the in-flanges of the described first pipe lower end, and the upper surface of the described flange that dams also has the flat sealing surface that cooperates with lower surface this in-flanges.
11. temperature controlling gravity heat pipe as claimed in claim 1 is characterized in that, the described flange that dams is made up of the flanging that the intercepting sewer lower end outwards turns down.
12. temperature controlling gravity heat pipe as claimed in claim 1 is characterized in that, described elastic bellows is tin-phosphor bronze bellows or corrugated stainless steel tubing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2007/070631 WO2009030090A1 (en) | 2007-09-05 | 2007-09-05 | A temperature controlling gravity heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101932889A CN101932889A (en) | 2010-12-29 |
| CN101932889B true CN101932889B (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007801000261A Expired - Fee Related CN101932889B (en) | 2007-09-05 | 2007-09-05 | A temperature controlling gravity heat pipe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101932889B (en) |
| WO (1) | WO2009030090A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929814A (en) * | 2010-09-19 | 2010-12-29 | 刘至国 | Heat pipe |
| FR3031582B1 (en) * | 2015-01-13 | 2018-11-30 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | HEATER COMPRISING A HEAT PUMP FLUID AND AN ABSORBABLE OR ADSORBABLE GAS AND A POROUS MATERIAL |
| CN104833248B (en) * | 2015-05-22 | 2017-01-11 | 东南大学 | Lunar vehicle radiation radiator |
| CN110488051A (en) * | 2019-08-28 | 2019-11-22 | 黄圣扬 | A kind of multimeter dehumidification device |
| CN113551548B (en) * | 2020-11-05 | 2022-04-08 | 临沂大学 | Gravity heat pipe |
| CN117346570A (en) * | 2023-12-06 | 2024-01-05 | 国家能源集团科学技术研究院有限公司 | Low-cost vacuum heat pipe heat exchanger with high heat absorption density |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4291676A (en) * | 1978-06-30 | 1981-09-29 | U.S. Philips Corporation | Solar collector, comprising an evaporation/condensation system |
| CN2383033Y (en) * | 1999-08-06 | 2000-06-14 | 华南理工大学 | Screw flow petaling shell-and-tube heat exchanger |
| CN2420810Y (en) * | 2000-04-18 | 2001-02-21 | 扬州市华扬太阳能热水器有限公司 | New electric heating tube |
| CN2544240Y (en) * | 2002-04-19 | 2003-04-09 | 葛洪川 | Temp.-controlled heat pipe |
| CN2716747Y (en) * | 2004-04-11 | 2005-08-10 | 徐宝安 | Glass vacuum solar transduction heat pipe |
| CN2775587Y (en) * | 2004-12-10 | 2006-04-26 | 北京清华阳光太阳能设备有限责任公司 | Heat pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000146473A (en) * | 1998-11-02 | 2000-05-26 | Fujikura Ltd | Power-free temperature-measurement type, heat transfer controlling heat pipe |
-
2007
- 2007-09-05 CN CN2007801000261A patent/CN101932889B/en not_active Expired - Fee Related
- 2007-09-05 WO PCT/CN2007/070631 patent/WO2009030090A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4291676A (en) * | 1978-06-30 | 1981-09-29 | U.S. Philips Corporation | Solar collector, comprising an evaporation/condensation system |
| CN2383033Y (en) * | 1999-08-06 | 2000-06-14 | 华南理工大学 | Screw flow petaling shell-and-tube heat exchanger |
| CN2420810Y (en) * | 2000-04-18 | 2001-02-21 | 扬州市华扬太阳能热水器有限公司 | New electric heating tube |
| CN2544240Y (en) * | 2002-04-19 | 2003-04-09 | 葛洪川 | Temp.-controlled heat pipe |
| CN2716747Y (en) * | 2004-04-11 | 2005-08-10 | 徐宝安 | Glass vacuum solar transduction heat pipe |
| CN2775587Y (en) * | 2004-12-10 | 2006-04-26 | 北京清华阳光太阳能设备有限责任公司 | Heat pipe |
Non-Patent Citations (1)
| Title |
|---|
| JP特開2000-146473A 2000.05.26 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101932889A (en) | 2010-12-29 |
| WO2009030090A1 (en) | 2009-03-12 |
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