CN215490396U

CN215490396U - Heat collecting pipe with heat storage function

Info

Publication number: CN215490396U
Application number: CN202122133568.9U
Authority: CN
Inventors: 唐文涛; 李家发; 夏洪良; 吴会娇; 王瑞祥; 孙成鹏
Original assignee: Hebei Tongchuang Energy Technology Co ltd
Current assignee: Hebei Tongchuang Energy Technology Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-01-11
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a heat collecting tube with a heat storage function, which adopts a double-layer glass sleeve structure formed by combining an inner layer sleeve and an outer layer sleeve, wherein a vacuum interlayer is arranged between the double-layer glass sleeve; the heat pipe is characterized in that an isolation region formed by separating a part of the inner sleeve from the evaporation end of the heat pipe in the circumferential direction is arranged between the inner sleeve and the evaporation end of the heat pipe, solid-liquid phase-change materials are filled in the isolation region, the phase change temperature of the solid-liquid phase-change materials is 40-60 ℃, and a part of the fin passes through the isolation region. The utility model can better improve the overall heat conversion efficiency of the heat pipe and the utilization efficiency of solar radiation heat by storing heat, and has the advantages of high thermal reaction rate, good heat transfer effect, high heat conversion efficiency and the like.

Description

Heat collecting pipe with heat storage function

Technical Field

The utility model relates to a solar heat collector, in particular to a heat collecting tube with a heat storage function.

Background

Heat utilization is an important form of application for solar energy utilization. A solar collector is a device that converts radiant energy of the sun into thermal energy. Particularly, in a solar water heating system, a solar heat collector is required to collect heat energy irradiated by the sun to heat water. Because the heat collector can only collect solar energy in a limited time of a day, the heat absorption efficiency is the key for determining the quality of the solar water heating system.

Among the existing solar thermal collectors, the most common is a heat pipe type solar thermal collector, the structure mainly includes a header and a heat collecting pipe, the heat collecting pipe is arranged obliquely, the header is in a long strip shape and is installed and fixed at the upper end of the heat collecting pipe, the inside of the header is a heat exchange cavity, one end of the heat exchange cavity is connected with a water inlet pipe, the other end is connected with a water outlet pipe, the heat collecting pipe has a plurality of pipes and is arranged at the lower side of the header along the direction perpendicular to the header at intervals, the structure of the heat collecting pipe generally includes a sleeve made of glass material, the heat collecting pipe further includes a heat pipe, an evaporation end of the heat pipe is inserted into the sleeve, a condensation end of the heat pipe is exposed out of the sleeve and is inserted into the heat exchange cavity of the header, wherein the sleeve generally adopts a double-layer glass sleeve structure, a vacuum interlayer is arranged between the double-layer glass sleeves, and a heat absorbing material coating is coated on the outer surface of the inner-layer sleeve. When the sun shines like this, shines the heat absorbing material coating and is absorbed and make the inlayer sleeve pipe intensification through outer sleeve pipe and vacuum intermediate layer, and outer sleeve pipe and the setting of vacuum intermediate layer can avoid the heat of collecting to be taken away by external wind current, are favorable to the heat absorption heat-retaining. Fins are then typically provided between the evaporator end of the heat pipe and the inner sleeve to better transfer the heat from the inner sleeve to the evaporator end of the heat pipe. During operation, after the evaporation end of the heat pipe absorbs heat, the working medium inside can be heated, vaporized and upwards moved to the condensation end to release heat and condense, the heat released by the condensation end heats the water in the heat exchange cavity, and meanwhile, the working medium flows downwards to the evaporation end after condensation at the condensation end and forms circulation.

The existing solar heat collector has the following defects: 1 the existing heat collecting pipe mounting structure is only to set up a sealing washer on the installing port of header, because the partial length of heat collecting pipe condensation is less, in order to improve condensation end radiating effect as far as possible, then need insert the heat pipe condensation end in the header from the sealing washer until complete butt on the inner wall of the other end of header inner chamber, improve the length of condensation end in the header inner chamber as far as possible like this in order to improve radiating effect. However, when the heat collecting pipe is installed, the position cannot be accurately measured, and the heat collecting pipe is easily inserted too deeply and damaged due to overlarge abutting pressure of the inner side wall of the header. Meanwhile, the heat pipe still has the defect that the heat release efficiency of the condensation end is lower than the heat absorption efficiency of the evaporation end, so that the heat conversion and absorption effects are reduced. Meanwhile, the existing heat collecting pipe mounting structure has the defect of inconvenient installation, insertion, disassembly and extraction. 2 the heat absorption efficiency of the evaporation end of the heat pipe in the existing heat collecting pipe is higher than the heat release efficiency of the condensation end, so that the overall heat conversion efficiency of the heat pipe is not high, and the utilization efficiency of the solar radiation heat is not high. In part of the prior patent technologies, phase-change materials are filled between the heat pipe and the sleeve to store heat; this, in turn, can result in a slower and more irreparable rate of device heating reaction. 3 in the existing heat collecting tube, although the fin is arranged between the evaporation end of the heat pipe and the inner sleeve for better heat transfer, a gap exists between the fin and the side wall of the attached glass tube, and the fin is easily softened when being heated to increase the gap, so that the airflow flows in the gap after being heated, the heat transfer and heat conduction performance of the fin can be greatly influenced, and the comprehensive heat exchange coefficient of the heat collecting tube is reduced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the technical problems to be solved by the utility model are as follows: how to provide one kind can be through the storage heat, improve the whole thermal conversion efficiency of heat pipe better, improve the solar radiation heat utilization efficiency, and the device thermal reaction rate is fast has the thermal-arrest thermal-collecting tube of function.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a heat collecting pipe with a heat storage function is provided with a double-layer glass sleeve structure formed by combining an inner layer sleeve and an outer layer sleeve, a vacuum interlayer is arranged between the double-layer glass sleeve, the heat collecting pipe also comprises a heat pipe, an evaporation end of the heat pipe is positioned in the middle of an inner cavity of the inner layer sleeve, and fins are arranged between the evaporation end of the heat pipe and the inner layer sleeve; the heat pipe is characterized in that an isolation region formed by separating a part of the inner sleeve from the evaporation end of the heat pipe in the circumferential direction is arranged between the inner sleeve and the evaporation end of the heat pipe, solid-liquid phase-change materials are filled in the isolation region, the phase change temperature of the solid-liquid phase-change materials is 40-60 ℃, and a part of the fin passes through the isolation region.

Therefore, in the process that the fins transmit the solar illumination heat absorbed by the heat collecting tube to the evaporation end of the heat pipe, a part of fins pass through the solid-liquid phase-change material and are liquefied, so that a part of heat is absorbed and stored by the solid-liquid phase-change material, and a part of heat is transmitted to the evaporation end of the heat pipe to be absorbed and is transmitted to the header through the heat pipe. Therefore, the solid-liquid phase change material absorbs a part of heat to be stored, the defect that the heat absorption efficiency of the evaporation end of the heat pipe is higher than the heat dissipation efficiency of the condensation end, so that the overall heat conversion utilization efficiency is not high can be overcome, and the phenomenon that the condensation effect is influenced by overhigh temperature caused by excessive heat introduced into the condensation end of the heat pipe can be avoided. The heat stored in the phase-change material can be slowly released at night, the temperature in the tube is kept not too low, and the heat collecting tube can be well prevented from frosting or freezing at night to cause damage in areas with large temperature difference at night.

Further, the phase transition temperature of the solid-liquid phase change material is about 50 ℃.

Further, the outer surface of the inner sleeve is coated with a heat absorbing material coating.

Therefore, the heat absorbing material coating can be better relied on to absorb the illumination heat, and the vacuum interlayer is relied on to isolate the air, so that the heat loss is avoided. In other embodiments, the heat absorbing material coating may be provided directly to the outer surface of the wing portion of the fin.

Further, the fins are made of aluminum.

This enables better heat transfer.

Further, the fin has that the cross-section is curved alar part, and the alar part outside is used for pasting and absorbing heat with inner casing inner wall, and the fin still has a whole annular installation department that is, and the heat pipe evaporation end is installed in the installation department by the parcel, and the fin still has the rib portion that is used for heat transfer between the two between connection alar part and the installation department, the rib portion is through isolation region.

Therefore, the fins are adhered to the inner wall of the inner-layer sleeve pipe by the wing parts and absorb heat, and the solid-liquid phase change material is not arranged at the wing parts, so that the overall heat absorption effect of the fins is not influenced. Meanwhile, after the wing parts absorb heat, the heat is concentrated on the rib parts and then is transferred to the middle mounting part through the rib parts, so that surplus heat can be generated on the rib parts, the rib parts pass through the isolation region, the surplus heat can be absorbed and stored by the solid-liquid phase change material in the isolation region in the heat transfer process of the rib parts, and the surplus heat is normally transferred to the mounting part and enters the heat pipe. Therefore, the structure enables the heat collecting tube to store heat and simultaneously avoids the defect that the heating reaction rate of the device is slowed down due to untimely heat transfer.

Further, the rib is provided with a plurality of ribs, part of the ribs are connected with the mounting part through the isolation area, and part of the ribs are directly connected with the mounting part.

Therefore, the heat pipe can better ensure that a part of heat can be directly transferred to the installation part through the rib part, and when the sunlight is weak, enough heat is directly transferred to the installation part and absorbed by the heat pipe in the installation part, so that the problem that the hot water effect of the device is poor due to the heat absorption influence of the solid-liquid phase change material when the sunlight is weak is avoided.

Furthermore, the cross sections of the wing parts are in a shape of a minor arc and are positioned on the left side and the right side of the heat collecting pipe, the rib parts comprise two first rib parts, the two first rib parts extend inwards to the central position from the upper ends of the wing parts on the two sides along the diameter direction of the inner sleeve and are connected in a parallel mode to form an installation part used for surrounding the evaporation end of the heat pipe; the solid-liquid phase-change material is encapsulated between the two first ribs and forms an isolation zone.

This facilitates the formation and installation of the fins and also facilitates the formation of the isolation regions. Meanwhile, after the solid-liquid phase change material is heated and liquefied, the solid-liquid phase change material can be filled into a gap between the mounting part and the evaporation end of the heat pipe, so that heat can be better transferred between the mounting part and the evaporation end of the heat pipe, and the heat transfer efficiency between the fin and the evaporation end of the heat pipe is improved.

Furthermore, an elastic sealing strip arranged along the length direction of the heat collecting pipe is arranged at the joint position between the wing part and the first rib part, and the elastic sealing strip protrudes out of the outer surface of the wing part (when the stress is not applied) and abuts against the inner wall of the inner-layer sleeve pipe to form sealing.

Therefore, the fixing of the position of the fin can be better kept after the fin is installed, and meanwhile, the solid-liquid phase-change material can be better encapsulated in the isolation area, so that the solid-liquid phase-change material is prevented from falling into the lower space through the outer surface of the fin.

Furthermore, the two first rib parts are respectively provided with a heat transfer bulge which is formed by bending and extending towards the opposite direction at the position close to the mounting part.

In this way, the heat transfer protrusions extend into the solid-liquid phase-change material, and surplus heat gathered at the mounting portion (particularly surplus heat caused by excessive heat transferred to the mounting portion by the ribs in the direction opposite to the first ribs) can be better transferred to the solid-liquid phase-change material for storage. Meanwhile, the heat transfer bulge is close to the mounting part, so that the situation that the mounting part seizes the first rib part to transfer heat is avoided. Meanwhile, in the process of installing the fins, the heat transfer protrusions can be extruded inwards, so that the wing parts of the fins are contracted inwards, and the fins can be conveniently installed in the inner-layer sleeve of the heat collecting tube. After the fins are installed, the heat transfer protrusions can apply outward elastic force to the first rib portions (the first rib portions are arranged along the diameter direction, so that the outward elastic force along the diameter direction cannot be generated by the first rib portions), the elastic sealing strips at the outer ends of the first rib portions can be well abutted against the inner wall of the inner-layer sleeve for sealing, and the solid-liquid phase change material is better prevented from being leaked.

In addition, when the fin is implemented, the fan-shaped areas at the front end and the rear end of the fin in the length direction between the isolation areas can be in sealing connection by selecting elastic and flexible materials, so that the fin can be installed in a mode of compressing the wing parts of the fin when the fin is convenient to install, and the fin can be inserted and installed more conveniently and quickly. Of course, in the implementation, the positions of the front end and the rear end in the length direction of the fin between the isolation areas can also be sealed by embedding an elastic sealing strip at the upper surface position after the two sides of the fan-shaped connecting plate and the rib part are sealed and fixed. In addition, the front end and the rear end of the heat pipe can be further sealed in a mode of sleeving sealing rings, so that complete sealing isolation of an isolation area is realized better, and leakage of solid-liquid phase change materials is avoided. In addition, when the solid-liquid phase-change material is implemented, 48# paraffin, 58# paraffin, trissyringane paraffin, erythritol and the like can be adopted, and the filling capacity can be about 75% of the filling reserved space (changed according to the angle of the heat collector), so that the overflowing of the melted solid-liquid phase-change material easily caused by over filling can be prevented.

Furthermore, a layer of heat conduction oil film formed by heat conduction oil is arranged between the outer side surface of the wing part of the fin and the inner wall of the corresponding inner layer sleeve.

Therefore, the heat conduction oil film can prevent air from entering the gap to influence heat transfer, and the wing part can absorb heat better. And more importantly, the heat-conducting oil film has certain viscosity, so that wing parts of the fins can be still attached to the inner wall of the inner-layer sleeve after being heated and softened, the problem that the fins are separated from the inner wall of the inner-layer sleeve due to being heated and softened to cause low heat transfer efficiency is avoided, and the stability of the heat transfer effect at the initial position of a heat transfer path is ensured. When the heat conduction oil film is implemented, the heat conduction oil film is formed by heat conduction oil with good heat conductivity and cohesiveness.

Furthermore, the outer side surfaces of the wing parts of the fins are distributed with liquid distribution micro-channels, and the liquid distribution micro-channels are formed by a plurality of liquid distribution grooves which are distributed on the outer side surfaces of the wing parts of the fins and have the depth of less than 1 mm.

Therefore, the heat conduction oil can be more conveniently distributed on the surface of the wing part of the whole fin through the liquid distribution micro-channel formed by the liquid distribution grooves to form a heat conduction oil film.

Further, the liquid distribution groove comprises a width direction liquid distribution groove which is arranged along the width direction of the wing part and is uniformly distributed along the length direction at intervals, and a length direction liquid distribution groove which is arranged adjacent to the first rib part and is arranged along the length direction of the fin, wherein one end of the width direction liquid distribution groove is connected with the length direction liquid distribution groove.

Therefore, the heat conduction oil can be more uniformly distributed on the surface of the wing part of the whole fin and form a heat conduction oil film.

Furthermore, a liquid storage tank is formed at the joint of the width direction liquid distribution groove and the length direction liquid distribution groove in an expanding mode, a liquid storage capsule is packaged in the liquid storage tank and used for containing heat conduction oil, and one side of the liquid storage capsule is connected with the elastic sealing strip.

Therefore, in the installation process, the elastic sealing strip is installed in place and then is abutted and extruded with the inner wall of the inner-layer sleeve, so that the liquid storage capsule can be broken and heat conduction oil is released, and the liquid distribution groove is filled with the elastic sealing strip. Therefore, the structure is skillfully combined with the elastic sealing strip, so that the heat conducting oil is released by utilizing the elastic deformation force of the elastic sealing strip to distribute liquid in the installation process. Is very convenient, fast, ingenious and feasible.

Further, the liquid storage capsule is made of a hot melt adhesive film, and the melting temperature of the hot melt adhesive film is about 50 ℃. Therefore, even if part of the liquid storage capsules are not broken or broken thoroughly during installation, the hot melt adhesive film can be melted and broken to distribute liquid along with the rise of the heating temperature of the heat collecting tube in the using process of the device, and the reliability of the device is improved.

Further, the lower end position of the wing part is also provided with a second rib part which extends inwards to the middle position along the diameter direction of the inner sleeve and is connected with the mounting part.

Like this, can guarantee better that some heat can directly pass through the rib and to the installation department heat transfer, when guaranteeing that sunlight is less strong, the absorptive partial heat of alar part can directly reach the heat pipe and avoid being absorbed by phase change material, guarantees the hot water effect of device during cloudy day. Meanwhile, the second rib parts can better support the wing parts, so that the wing parts of the fins can be attached to the inner wall of the inner-layer sleeve after being heated and softened better, the situation that the heat transfer efficiency is lower due to the fact that the fins are softened by heating and separated from the inner wall of the inner-layer sleeve is avoided, and the stability of the heat transfer effect at the initial position of a heat transfer path is guaranteed.

Furthermore, the inner end position of the second rib part is provided with an upward folding section, and the second rib part is connected and fixed with the mounting part through the folding section.

The second rib portion can generate an elastic force outwards along the diameter direction through the upward folding section (if the second rib portion is integrally arranged along the diameter direction, the elastic force cannot be generated in the diameter direction), and the elastic force can enable the wing portion to be better attached to the inner wall of the inner sleeve. Simultaneously, more importantly, this book is to the section and is made the fin can insert the installation department of fin back earlier with the heat pipe evaporation end when the installation, handheld installation department and through the book section of compression second rib portion earlier, make both sides fin draw close inwards, then can insert the inlayer sleeve pipe with whole fin convenient and fast ground, after inserting to target in place, loosen the book section of second rib portion, both sides fin outwards pops out and pastes with inlayer sleeve pipe inner wall, then can also promote the book section of second rib portion along the outside direction of diameter, make both sides fin paste closely with inlayer sleeve pipe inner wall better, and extrude the breakage with the stock solution capsule better, realize the release cloth liquid of conduction oil. The convenience of installation is greatly improved.

Furthermore, a sealing plug is arranged on the end face of the front end between the inner sleeve and the outer sleeve, and the evaporation end of the heat pipe is inserted into and hermetically fixed on the sealing plug.

Therefore, the heat pipe and the inner and outer double-layer sleeves are convenient to install and fix.

Furthermore, a spring clip is arranged at the bottom of the rear end between the inner casing and the outer casing.

Therefore, the inner and outer double-layer sleeves are convenient to keep an interval.

In conclusion, the heat pipe heat exchanger can better improve the overall heat conversion efficiency of the heat pipe and the utilization efficiency of solar radiation heat by storing heat, and has the advantages of high thermal reaction rate, good heat transfer effect, high heat conversion efficiency and the like.

Drawings

Fig. 1 is a schematic view of a solar collector to which the present invention is applied.

Fig. 2 is a partial structural schematic view of the single quick-insertion limiting structure in fig. 1.

Fig. 3 is a cross-sectional view of fig. 2.

Fig. 4 is a schematic structural diagram of the device for sealing and fixing the condensation end of the single heat pipe in fig. 1.

Fig. 5 is a schematic view of a single heat collecting tube in fig. 1.

Fig. 6 is a schematic cross-sectional view of fig. 5.

FIG. 7 is a schematic view of the structure of the individual airfoil of FIG. 6.

Fig. 8 is a left side view of fig. 7.

Detailed Description

The utility model will be described in further detail below with reference to a specific embodiment of a solar collector in which the utility model is used.

In the specific implementation: referring to fig. 1-8, a solar heat collector comprises a header 1 and a heat collecting tube 2, wherein the heat collecting tube is arranged in an inclined manner, the header 1 is in a long strip shape and is fixedly mounted at the upper end of the heat collecting tube along the length direction, a heat exchange cavity 3 is arranged inside the header 1, one end of the heat exchange cavity 3 is connected with a water inlet tube 4, the other end of the heat exchange cavity is connected with a water outlet tube 5, the heat collecting tube 2 is arranged at the lower side of the header at intervals along the direction perpendicular to the header, the solar heat collector further comprises a heat pipe 6, an evaporation end 7 of the heat pipe 6 is inserted into the heat collecting tube, and a condensation end 8 of the heat pipe 6 is exposed out of the heat collecting tube 2 and is inserted into the heat exchange cavity 3 of the header 1.

Like this, the thermal-arrest pipe is through inserting limit structure soon and accomplishing the erection joint, realizes spacingly when can guaranteeing quick installation, avoids the heat pipe condensation end of thermal-arrest pipe to insert too deeply and lead to the damage with the header inner wall butt is too tight, has made things convenient for quick installation and has guaranteed the installation back efficiency of releasing heat.

The heat collecting pipe 2 is of a double-layer glass sleeve structure formed by combining an inner sleeve 9 and an outer sleeve 10, a vacuum interlayer is arranged between the double-layer glass sleeves, and the outer surface of the inner sleeve is coated with a heat absorbing material coating 11.

Therefore, the heat absorbing material coating can be better relied on to absorb the illumination heat, and the vacuum interlayer is relied on to isolate the air, so that the heat loss is avoided.

The evaporation end 7 of the heat pipe 6 is located in the middle of the inner cavity of the inner layer sleeve 9, and a fin 12 is arranged between the evaporation end 7 of the heat pipe and the inner layer sleeve 9.

This allows for better heat transfer. The fins are usually made of aluminum material, which can better transfer heat.

The quick-insertion limiting structure comprises a condensation end 8 of a heat pipe 6, the condensation end 8 of the heat pipe is completely exposed out of a sealing plug 13 on the end face of the heat collecting pipe, and the diameter of the condensation end 8 of the heat pipe is larger than that of an evaporation end 7 of the heat pipe; insert limit structure soon still including being located the thermal-collecting tube mounting groove 14 on the header installation face, the cooperation of pegging graft at the thermal-collecting tube tip is installed in thermal-collecting tube mounting groove 14, and the intermediate position of thermal-collecting tube mounting groove bottom is opened has and communicates to heat transfer cavity and heating pipe condensation end male interface, is provided with on the interface with heat pipe condensation end complex sealing washer 15.

Like this, rely on the thermal-collecting tube mounting groove to realize spacing to the thermal-collecting tube tip, the heat pipe condensation end of thermal-collecting tube tip inserts the heat transfer cavity from the interface, relies on the sealing washer to realize sealing between heat pipe condensation end and the header interface. Therefore, the heat collecting pipe can be quickly installed and limited, and the installation is very convenient and quick.

Wherein, insert limit structure soon still including setting up round elasticity spacing ring 23 on the inside wall of thermal-collecting tube mounting groove, elasticity spacing ring 23 is used for when the thermal-collecting tube installation and the contact of thermal-collecting tube peripheral surface and spacing.

Like this, rely on elasticity spacing ring and heat collecting pipe peripheral surface contact and spacing for the notch of heat collecting pipe mounting groove can be opened bigger in order to make things convenient for the heat collecting pipe to insert, and it is spacing to lean on elasticity spacing ring after the heat collecting pipe inserts, has sealing washer and elasticity spacing ring two locating points on the heat collecting pipe length direction, can guarantee better to aim at and realize quick installation. When the elastic limiting ring is implemented, the elastic limiting ring is made of rubber materials.

Wherein, the sealing ring 15 is fixedly installed at the inserting port, a circle of elastic clamping piece is arranged on the periphery of the front end of the sealing ring, the elastic clamping piece comprises a front half section 16 and a rear half section 17, the elastic clamping piece is in an outward half-and-half folded state before installation, one end of the elastic clamping piece is fixed with the sealing ring 15, the other end of the elastic clamping piece is fixedly connected with a butting disc 18, the butting disc 18 is positioned at the adjacent or attached position of the inner side wall of the header heat exchange cavity opposite to the inserting port after the elastic clamping piece is unfolded, and the condensation end 8 of the heat pipe is inserted and matched in the sealing ring 15 and enables the elastic clamping piece to be in an unfolded state; a section of space is left between the end surface of the end part of the heat collecting pipe and the bottom surface of the heat collecting pipe mounting groove.

Like this, in the installation, the heat pipe condensation end of collecting tube tip inserts the heat transfer cavity from the interface after, can directly support the butt dish and insert to heat transfer cavity is inside, is promoted to the state of expanding until the elasticity clamping piece, and the collecting tube can't be promoted again this moment, and elasticity clamping piece and butt dish are wrapped the heat pipe condensation end together and are assisted the realization fixed, improve fixed effect. Meanwhile, the abutting disc is already positioned at the adjacent or attached position of the inner side wall of the header heat exchange cavity opposite to the insertion port, so that the condensation end can be ensured to be positioned in the heat exchange cavity to the maximum extent. Therefore, the heat collecting pipe is convenient to mount and fix, and the heat release efficiency of the condensation end in the heat exchange cavity can be improved to the maximum extent.

Wherein, the shape of the abutting disk 18 is consistent with the shape of the end face of the heat pipe condensation end 8, and the cross section of the elastic clamping piece is in an arc shape consistent with the cross section circle of the heat pipe condensation end.

Make the thermal-collecting tube installation insert the back like this, the heat pipe condensation end can just be lived by butt dish and the laminating parcel of the elasticity clamping piece that expandes, avoids the heat pipe condensation end to directly expose in the heat transfer cavity for a long time like this and condenses the incrustation scale and lead to being difficult to extract when dismantling. Greatly improve the convenient degree of device maintenance dismantlement.

Wherein, the abutting disk 18 and the elastic clamping piece are made of materials with heat transfer efficiency higher than that of water; the outer side surface of the front half section of the elastic clamping piece far away from the insertion port is provided with a rib 19 protruding outwards along the length direction.

Therefore, after the heat collecting pipe is installed and inserted, the condensation end of the heat pipe can be just attached and wrapped by the abutting disc and the unfolded elastic clamping piece; therefore, after the abutting disc and the elastic clamping piece are made of materials with heat transfer efficiency higher than that of water, the heat dissipated by the condensation end of the heat pipe can be quickly dissipated into flowing water in the heat exchange cavity under the auxiliary heat dissipation effect of the abutting disc, the elastic clamping piece and the rib structure. The heat release efficiency of the condensation end of the heat pipe is greatly improved in an auxiliary mode, the phenomenon that the condensation effect is influenced due to the fact that the temperature is too high when the condensation end dissipates heat in time is avoided, and therefore the heat utilization efficiency of the device is greatly improved on the whole.

Wherein, butt dish 18 and elastic clamping piece adopt aluminium material to make, and elastic clamping piece includes first half 16 and second half 17, rib 19 adopts elastic metal material to make, and rib 19 is whole to weld in elastic clamping piece first half middle part of the surface along length direction, and both ends surpass elastic clamping piece first half front and back both ends and flatten around rib 19, and the rib front end surpasss elastic clamping piece first half 16 front end parts and flattens the back welded fastening on butt dish (front end) after flattening, and the rib rear end surpasss elastic clamping piece first half rear end parts and flattens the back and is the state of bending welded to elastic clamping piece second half 17 lateral surfaces.

Therefore, the abutting disc and the elastic clamping piece are made of aluminum, so that the heat dissipation and heat release effects can be better improved; meanwhile, the ribs made of elastic metal materials are used for conveniently realizing the connection between the two sections of elastic clamping pieces and the abutting discs and keeping the elasticity, so that the heat collecting pipes can be quickly reset after being detached and pulled out.

Wherein, the back end of the back half section elastic clip piece is provided with a connecting strip 20 with a narrowed width direction, and the connecting strip 20 is bent and then is inserted and fixed in the sealing ring.

Thus, the connection between the elastic clip and the seal ring is facilitated and deformation can be maintained. The event is based on above-mentioned structure, the application actually still discloses a device is used to sealed fixed of heat pipe condensation end, its foundation structure does, including a sealing washer 15, the sealing washer 15 outside be used for with the header on the interface cooperation of heat collecting pipe mounting groove bottom intermediate position, the sealing washer 15 inboard is used for the cooperation of heat supply pipe condensation end to insert, the sealing washer front end periphery is provided with round elasticity clamping piece, elasticity clamping piece is outside half fold condition, elasticity clamping piece one end and sealing washer 15 are fixed, another end fixedly connected with butt dish 18, the sealing washer external diameter is greater than butt dish external diameter. The specific configuration of each component of the seal-securing device can then be further refined to the configuration defined above and below. Thus, the sealing and fixing device can be separately produced, processed and formed and then assembled and installed in the plug port of the header; therefore, the production and assembly are more convenient.

Wherein, the front end of the front half section 16 of the elastic clip is connected with the front end of the abutting disc 18, the front end of the sealing ring extends forwards from the front end of the inserting port to form a lip 21 with a trumpet-shaped inner surface, so that when the elastic clip is in a half-and-half folded state, the rear end of the abutting disc 18 can fall into the lip 21 to form sealing.

Like this, at the in-process of dismantling the thermal-collecting tube and overhauing, the thermal-collecting tube is extracted the back, and the elasticity clamping piece resumes half fold condition, and the butt dish is driven and is replied the butt and live the lip to it is sealed to compress tightly to form under the inside water pressure effect of heat transfer cavity. Water leakage is avoided, and online disassembly and maintenance of the heat collecting tube are conveniently realized.

Wherein, the rear end of the sealing ring 15 is exposed backwards from the rear end of the plug interface and forms a limiting bulge 22, and a hanging step is formed between the limiting bulge 22 and the bottom surface of the heat collecting pipe mounting groove.

Therefore, the sealing ring is convenient to position by hanging the step during assembly, and the front end face of the heat collecting pipe can be buffered by the limiting bulge during installation of the heat collecting pipe, so that damage is avoided.

The main body of the header is made of polyurethane; the main body portion of the header also has a layer of harder outer shell 34 on its outer surface, which may be made of metal or hard plastic to improve the overall strength of the device. Therefore, the heat-insulation device has a sufficient heat-insulation effect and avoids heat dissipation loss in the heat exchange cavity.

Wherein, the heat exchange cavity 3 of header 1 is provided with a recess on just facing the inside wall of interface, and the recess is embedded to be provided with an area and is greater than the cushion 24 of heat pipe condensation end tip, and when the condensation end of heat pipe inserted and made the elasticity clamping piece be the expansion state, the butt joint dish pasted with cushion 24 surface mutually.

Therefore, the heat pipe condensation end can be inserted into the innermost part of the heat exchange cavity, the heat pipe condensation end is protected, and the damage caused by the offset of the heat pipe condensation end and the inner side wall of the header heat exchange cavity is avoided. And then can make the heat pipe condensation end heat transfer effect maximize under guaranteeing the safe assembly prerequisite.

Wherein, the surface of cushion 24 is provided with a heating panel 25, and the heating panel area is greater than heat pipe condensation end tip, and the heating panel is that heat transfer efficiency is greater than the material of water and makes, and the condensation end of heat pipe inserts and makes the elasticity clamping piece be when expanding the state, and the butt dish pastes with heating panel 25 surface mutually.

Therefore, the end part of the condensation end of the heat pipe can conduct heat outwards through the heat dissipation plate, and the heat release efficiency of the condensation end is improved. Meanwhile, according to the principle of the heat pipe, the groove, the elastic material in the groove and the structural mode of further adding the heat dissipation plate can be independently implemented on the header, so that the header structure which is convenient for heat pipe installation and improves the protection effect of the heat pipe during installation can be obtained.

The heat dissipation plate 25 is made of an aluminum material. The cost is low and the heat dissipation effect is better.

An isolation region 26 formed by separating a part of the inner sleeve from the evaporation end of the heat pipe in the circumferential direction is arranged between the inner sleeve and the evaporation end of the heat pipe, a solid-liquid phase change material is filled in the isolation region 26, the phase change temperature of the solid-liquid phase change material is 40-60 ℃ (about 50 ℃ is optimal), and a part of the fin 12 passes through the isolation region 26.

Therefore, in the process that the fins transmit the solar illumination heat absorbed by the heat collecting tube to the evaporation end of the heat pipe, the solar illumination heat passes through the solid-liquid phase-change material and is liquefied, part of heat is absorbed and stored by the solid-liquid phase-change material, and part of heat is transmitted to the evaporation end of the heat pipe to be absorbed and is transmitted to the header through the heat pipe. Therefore, the solid-liquid phase change material absorbs a part of heat to be stored, the defect that the heat absorption efficiency of the evaporation end of the heat pipe is higher than the heat dissipation efficiency of the condensation end, so that the overall heat conversion utilization efficiency is not high can be overcome, and the phenomenon that the condensation effect is influenced by overhigh temperature caused by excessive heat introduced into the condensation end of the heat pipe can be avoided. The heat stored in the phase-change material can be slowly released at night, the temperature in the tube is kept not too low, and the heat collecting tube can be well prevented from frosting or freezing at night to cause damage in areas with large temperature difference at night.

Wherein, fin 12 has the cross-section and is curved alar part 27, and the alar part 27 outside is used for pasting and absorbing heat with inner casing inner wall, and the fin still has a whole annular installation department 28 that is, and the heat pipe evaporation end is installed in the installation department by the parcel, and the fin still has the rib portion that is used for heat transfer between the two between connection alar part and the installation department, the rib portion passes through isolation region.

Wherein the rib has a plurality of ribs, a portion of the ribs being connected to the mounting portion 28 via the isolation zone, and a portion of the ribs being directly connected to the mounting portion.

The sections of the wing parts 27 are in an inferior arc shape and are positioned at the left side and the right side of the heat collecting pipe, the rib parts comprise two first rib parts 29, the two first rib parts 29 extend inwards to the central position from the upper ends of the wing parts at the two sides along the diameter direction of the inner sleeve and form a mounting part 28 for surrounding the evaporation end of the heat pipe in a winding manner; the solid-liquid phase-change material is encapsulated between the two first ribs and forms an isolation zone 26.

The connection position between the wing part 27 and the first rib part 29 is further provided with an elastic sealing strip 30 arranged along the length direction of the heat collecting pipe, and the elastic sealing strip 30 protrudes out of the outer surface of the wing part (when not stressed) and abuts against the inner wall of the inner-layer sleeve to form sealing.

The two first rib portions 29 are provided with heat transfer protrusions 39 bent and extended in opposite directions at positions close to the mounting portions 28.

And a heat conduction oil film formed by heat conduction oil is arranged between the outer side surface of the wing part of the fin 12 and the inner wall of the corresponding inner layer sleeve.

Wherein, the distribution of the alar part outside surface of fin is provided with cloth liquid microchannel 31, and cloth liquid microchannel 31 comprises a plurality of cloth liquid grooves that distribute on the alar part outside surface of fin and the degree of depth is less than 1 millimeter.

The liquid distribution groove comprises width direction liquid distribution grooves 32 which are arranged along the width direction of the wing part and are evenly distributed along the length direction at intervals, and also comprises length direction liquid distribution grooves 33 which are arranged adjacent to the first rib parts and are arranged along the length direction of the fin, wherein one ends of the width direction liquid distribution grooves are connected with the length direction liquid distribution grooves.

The liquid storage groove 35 is formed at the joint of the width direction liquid distribution groove and the length direction liquid distribution groove in an expanding mode, a liquid storage capsule is packaged in the liquid storage groove 35 and used for containing heat conduction oil, and one side of the liquid storage capsule is connected with the elastic sealing strip.

Wherein the liquid storage capsule is made of a hot melt adhesive film, and the melting temperature of the hot melt adhesive film is about 50 ℃. Therefore, even if part of the liquid storage capsules are not broken or broken thoroughly during installation, the hot melt adhesive film can be melted and broken to distribute liquid along with the rise of the heating temperature of the heat collecting tube in the using process of the device, and the reliability of the device is improved.

The lower end of the wing 27 is also provided with a second rib 36 extending inwards along the diameter direction of the inner sleeve to a middle position to be connected with the mounting part.

The inner end of the second rib 36 has an upward folded section 37, and is connected and fixed with the mounting part through the folded section.

Wherein, a sealing plug 13 is arranged on the front end face between the inner layer sleeve and the outer layer sleeve, and the evaporation end of the heat pipe is inserted and sealed and fixed on the sealing plug 13.

Wherein, a spring clip 38 is arranged at the bottom of the rear end between the inner casing and the outer casing.

Claims

1. A heat collecting pipe with a heat storage function is provided with a double-layer glass sleeve structure formed by combining an inner layer sleeve and an outer layer sleeve, a vacuum interlayer is arranged between the double-layer glass sleeve, the heat collecting pipe also comprises a heat pipe, an evaporation end of the heat pipe is positioned in the middle of an inner cavity of the inner layer sleeve, and fins are arranged between the evaporation end of the heat pipe and the inner layer sleeve; the heat pipe is characterized in that an isolation region formed by separating a part of the inner sleeve from the evaporation end of the heat pipe in the circumferential direction is arranged between the inner sleeve and the evaporation end of the heat pipe, solid-liquid phase-change materials are filled in the isolation region, the phase change temperature of the solid-liquid phase-change materials is 40-60 ℃, and a part of the fin passes through the isolation region.

2. The heat collecting tube with a heat storage function as claimed in claim 1, wherein the phase transition temperature of the solid-liquid phase change material is 50 ℃; the outer surface of the inner sleeve is coated with a heat-absorbing material coating; the fins are made of aluminum.

3. The heat collecting tube with a heat accumulating function according to claim 1, wherein the fin has a wing portion having an arc-shaped cross section, an outer side of the wing portion being attached to an inner wall of the inner jacket to absorb heat, and a mounting portion having an annular shape as a whole, the evaporation end of the heat pipe being housed in the mounting portion, and a rib portion connecting the wing portion and the mounting portion and for transferring heat therebetween, the rib portion passing through the insulating region.

4. The heat collecting tube having a heat accumulating function according to claim 3, wherein the rib portion has a plurality of rib portions, a part of the rib portion is connected to the mounting portion via the isolated region, and a part of the rib portion is directly connected to the mounting portion.

5. The heat collecting tube with the heat storage function as claimed in claim 3, wherein the wing parts have a slightly arc cross section and are located at the left and right sides of the heat collecting tube, and the rib parts comprise two first rib parts which extend inwards to a central position from the upper ends of the wing parts at the two sides along the diameter direction of the inner sleeve and are connected in a winding manner to form a mounting part for surrounding the evaporation end of the heat tube; the solid-liquid phase-change material is encapsulated between the two first ribs and forms an isolation zone.

6. The heat collecting tube with a heat storage function as claimed in claim 5, wherein the connection position between the wing part and the first rib part is further provided with an elastic sealing strip arranged along the length direction of the heat collecting tube, and the elastic sealing strip protrudes out of the outer surface of the wing part and abuts against the inner wall of the inner sleeve to form a seal;

the two first rib parts are close to the mounting part and are respectively provided with a heat transfer bulge which is formed by bending and extending towards the opposite direction.

7. The heat collecting tube with heat storage function as claimed in claim 6, wherein a layer of heat conductive oil film made of heat conductive oil is provided between the outer surface of the wing part of the fin and the inner wall of the corresponding inner layer sleeve.

8. The heat collecting tube with heat storage function as claimed in claim 7, wherein the liquid distribution micro-channels are distributed on the outer side surfaces of the wing parts of the fins, and each liquid distribution micro-channel is composed of a plurality of liquid distribution grooves which are distributed on the outer side surfaces of the wing parts of the fins and have the depth of less than 1 mm;

the liquid distribution groove comprises width direction liquid distribution grooves which are arranged along the width direction of the wing part and are evenly distributed along the length direction at intervals, and also comprises length direction liquid distribution grooves which are arranged adjacent to the first rib parts and are arranged along the length direction of the fins, wherein one end of each width direction liquid distribution groove is connected with the corresponding length direction liquid distribution groove.

9. The heat collecting tube with the heat storage function as claimed in claim 8, wherein a liquid storage tank is further formed at the joint of the width direction liquid distribution groove and the length direction liquid distribution groove in an expanded manner, a liquid storage capsule is sealed in the liquid storage tank and used for containing heat conduction oil, and one side of the liquid storage capsule is connected with the elastic sealing strip;

the liquid storage capsule is made of a hot melt adhesive film, and the melting temperature of the hot melt adhesive film is 50 ℃.

10. The heat collecting tube with a heat accumulating function according to claim 8, wherein the lower end position of the wing part is further provided with a second rib part extending inward along the diameter direction of the inner sleeve to a middle position to be connected with the mounting part;

the inner end of the second rib part is provided with an upward folding section which is connected and fixed with the mounting part through the folding section;

a sealing plug is arranged on the end face of the front end between the inner sleeve and the outer sleeve, and the evaporation end of the heat pipe is inserted into and fixed on the sealing plug in a sealing way;

a spring clip is arranged at the bottom of the rear end between the inner casing and the outer casing.