CN217686789U - Fin type pulsating heat pipe heat exchanger - Google Patents

Abstract

The utility model discloses a fin formula pulsation heat pipe exchanger, install the pulsation heat pipe in the closed loop in the box including box and at least part, filling working medium in the pulsation heat pipe, the pulsation heat pipe is separated into heat absorption section, thermal-insulated section and heat extraction section with the pulsation heat pipe through left and right end plate and two heat insulating boards, the pulsation heat pipe of heat absorption section and heat extraction section is equipped with a plurality of fins respectively in the cover, the space casting at thermal-insulated section place has thermal-insulated material layer. The utility model discloses a form the heat insulating section with two heat insulating boards, the heat insulating material layer is cast in the heat insulating section, prevents to produce the heat exchange between heat absorption section and the heat extraction section, and U type pipe passes through expand tube technology and fin fixed connection, utilizes air conditioner heat exchanger manufacturing process, can produce efficient fin formula pulsation heat pipe exchanger in batches; the manufacturing process is simple, the raw materials are easy to obtain, and the capillary transport and heat transfer limit of the traditional heat pipe are avoided.

Description

Fin type pulsating heat pipe heat exchanger

Technical Field

The utility model belongs to the technical field of the waste heat utilization equipment, more specifically, relate to an utilize fin formula pulsation heat pipe exchanger of high temperature exhaust heating cold air.

Background

In the field of industrial production and building air conditioning, a large amount of high-temperature air or low-temperature air exists, and the recovery of heat from the high-temperature air or the recovery of cold from the low-temperature air is necessary to reduce energy consumption.

Various types of waste heat recovery technologies exist, such as plate-fin heat exchangers, rotary-wheel heat exchangers, and traditional heat pipe heat exchangers.

Pulsating heat pipes are currently recognized as an efficient heat transfer technology. The traditional pulsating heat pipe is formed by bending a capillary tube with the diameter less than 5mm into a plurality of loops and then connecting the loops at the head to form a closed loop. The interior of the vacuum pump is vacuumized and then is injected with working media, wherein the working media can be methanol, water, acetone, refrigerants R134a and R245fa, or a mixture of methanol and water, a mixture of methanol and acetone and the like, and in order to enhance the heat transfer effect, a nano material can also be used in the working media. The working medium forms a state that the air plugs and the liquid plugs are alternately distributed in the tube by self under the action of gravity and capillary. When the evaporation section is loaded with a heat load and the condensation section is loaded with a cold load, the working medium in the evaporation section pipe is heated and vaporized, the volume is rapidly expanded and increased, and the pressure of the evaporation section is increased; the working medium in the condensation section pipe is cooled and liquefied, the volume is reduced, and the pressure of the condensation section is reduced. The pressure difference is formed between the condensation section and the evaporation section, the working medium in the evaporation section is pushed to the condensation section for condensation by the pressure difference, the working medium in the condensation section is pushed to the evaporation section for heating and vaporization, and external power and a capillary core of a traditional heat pipe are not needed for heat transfer of the pulsating heat pipe. Although the pulsating heat pipe is also provided with the fins in the prior art, the fins are fixedly connected by adopting the welding technology, so that the manufacturing is relatively difficult and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a fin formula pulsation heat pipe exchanger possesses simple manufacture, low cost, advantage that heat exchange efficiency is high.

According to the utility model discloses an aspect provides fin type pulsating heat pipe heat exchanger, including the pulsating heat pipe of box and the at least partial closed loop of installing in the box, the working medium is annotated to the pulsating heat pipe intussuseption, the pulsating heat pipe separates into heat absorption section, heat insulating section and heat extraction section with the pulsating heat pipe through two heat insulating boards, the pulsating heat pipe of heat absorption section and heat extraction section is equipped with a plurality of fins respectively in the cover, the space casting that heat insulating section place has the heat insulating material layer.

In a specific embodiment of the present invention, two heat-insulating plates are connected by two intermediate plates, and the heat-insulating plates and the intermediate plates are welded and fixed to each other to form a casting space for casting the heat-insulating material layer.

The utility model discloses a specific embodiment, the pulsating heat pipe includes many U type pipes, it is fixed with the fin through the expand tube technology behind the first through-hole of fin that U type pipe is pegged graft, and adjacent U type pipe is established ties through the semicircle pipe and is followed through closed loop connecting pipe and connect, closed loop connecting pipe is equipped with the connector that is used for evacuation and notes liquid.

The utility model discloses a specific embodiment, the quantity of pulsation heat pipe is two sets of or more than two sets of, and at least one set of pulsation heat pipe is established ties and is set up in the box, and the heat absorption section that corresponds in at least one set of pulsation heat pipe is established ties, and the heat extraction section that separates the heat absorption section and the series connection of at least one set of pulsation heat pipe connects gradually to cut apart the heat absorption section of establishing ties and the heat extraction section of establishing ties.

The utility model discloses a specific embodiment, the box includes two apron, and left end board and right end board set up two between the apron, the space at heat absorption section place is enclosed into the heat absorption space by apron, left end board and heat insulating board, and the space at heat extraction section place is enclosed into the heat extraction space by apron, right end board and heat insulating board, be equipped with the second through-hole that supplies the pulsating heat pipe to pass on left end board and the right end board, the pulsating heat pipe is pegged graft behind the second through-hole, and is fixed with left end board and right end board through the expand tube technology.

The utility model discloses a technical scheme has following advantage or one of beneficial effect at least among the above-mentioned technical scheme: the utility model discloses a two heat insulating boards form heat insulating section, the heat insulating material layer has been cast in the heat insulating section, prevent to produce heat exchange between heat absorbing section and the heat extraction section, and the heat insulating material layer prevents to play the wind between heat absorbing section and the heat release section simultaneously, and U type pipe passes through expand tube technology and fin fixed connection, increases heat transfer capacity, utilizes air conditioner heat exchanger manufacturing process, can produce efficient fin formula pulsation heat pipe heat exchanger in batches; the manufacturing process is simple, the raw materials are easy to obtain, and the capillary transport and heat transfer limit of the traditional heat pipe are avoided.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the operation of an embodiment of the present invention;

fig. 3 is a left side view of an embodiment of the present invention;

fig. 4 is a right side view of an embodiment of the present invention;

fig. 5 is a schematic diagram of a pulsating heat pipe in an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; may be mechanically, electrically or otherwise in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other elements or indirectly connected through one or more other elements or in an interactive relationship between two elements.

The following disclosure provides many different embodiments or examples for implementing different aspects of the invention.

Referring to fig. 1 to 5, the fin type pulsating heat pipe heat exchanger includes a box body and a pulsating heat pipe 20 of a closed loop at least partially installed in the box body, the pulsating heat pipe is a heat exchange pipe with a diameter smaller than 5mm, a working medium is filled in the pulsating heat pipe 20, the pulsating heat pipe 20 is divided into a heat absorption section 11, a heat insulation section 12 and a heat extraction section 13 by a left end plate 14, a right end plate 15 and two heat insulation plates 17, a space where the heat insulation section 12 is located is cast with a heat insulation material layer, the heat absorption section 11 is provided with a hot air inlet and a hot air outlet, the heat extraction section 13 is provided with a cold air inlet and a cold air outlet, the pulsating heat pipe 20 of the heat absorption section 11 and the heat extraction section 13 is respectively sleeved with a plurality of fins, and the pulsating heat pipe 20 is fixedly connected with the fins through a pipe expansion process. The fins are stamped from sheet metal, which may be copper foil or aluminum foil.

Hot air enters a space where the heat absorption section 11 is located from a hot air inlet, working medium in the heat absorption section 11 is heated and vaporized, the volume is rapidly expanded and increased, the pressure of the heat absorption section 11 is increased, and heat absorbed gas is discharged from a hot air outlet; the cold air enters the space where the heat discharging section 13 is located from the cold air inlet, the cold air obtains the condensation heat and the sensible heat of working media in the pipe on the surface of the heat discharging section 13, the working media in the heat discharging section 13 are cooled and liquefied, the size is reduced, the pressure of the heat discharging section 13 is reduced, and the heat exchange is realized.

The pulsating heat pipe 20 comprises a plurality of U-shaped pipes 21, the U-shaped pipes 21 are inserted into first through holes of fins and then fixed with the fins through a pipe expanding process, adjacent U-shaped pipes 21 are connected in series through semicircular pipes 22 and then connected through a closed-loop connecting pipe 23, and the closed-loop connecting pipe 23 is provided with a connecting port 24 for vacuumizing and injecting liquid.

The box body comprises two cover plates 16, a left end plate 14 and a right end plate 15 are arranged between the two cover plates 16, second through holes for the pulsating heat pipe 20 to pass through are formed in the left end plate 14 and the right end plate 15, and the pulsating heat pipe 20 is inserted into the second through holes and then fixed with the left end plate 14 and the right end plate 15 through a pipe expanding process. The space where the heat absorption section 11 is located is surrounded by a cover plate 16, a left end plate 14 and a heat insulation plate 17 to form a heat absorption space, the space where the heat extraction section 13 is located is surrounded by the cover plate 16, a right end plate 15 and the heat insulation plate 17 to form a heat extraction space, the heat absorption space and the heat extraction space are manufactured into a square box body, heat transfer working media are filled in the pulsating heat pipe, and hot air or cold air flows from an unclosed end face.

During production, the fins, the left end plate 14, the right end plate 15, the heat insulation plate 17, the U-shaped pipes 21 and the semi-circular pipes 22 are processed through equipment.

The U-shaped pipe 21 is stringed with a left end plate 14, replaced with a fin and stringed with two heat insulation plates 17, the distance between the two heat insulation plates 17 is about 80cm, then stringed with an upper end plate 15 and a right end plate 15, the fin is tightly matched with the U-shaped pipe 21 by using a pipe expanding method, after the adjacent U-shaped pipe 21 is welded with the semi-circular pipe 22, the whole U-shaped pipe 21 is connected in series to form a loop, finally, the closed-loop connecting pipe 23 is welded, and the working medium is filled after vacuumizing through the connecting port 24.

Preferably, after the installation, an insulating material is cast between the two insulation boards 17, so that the space where the insulating section 12 is located is filled with an insulating material layer, and the insulating material layer prevents wind from flowing between the heat absorbing section 11 and the heat discharging section 13 on one hand, and prevents heat exchange between the heat absorbing section 11 and the heat discharging section 13 on the other hand.

The utility model discloses utilize little Guan Jingguan plate heat exchanger manufacturing technology, manufactured pulsating heat pipe heat exchanger, possessed and made simple, low cost, advantage that heat exchange efficiency is high.

The utility model discloses an in the embodiment, two heat insulating boards 17 are connected through two intermediate lamella 18, and two heat insulating boards 17's distance is not less than 50mm, and two heat insulating boards 17 are the parallel plate of suit on the heat exchange tube, and the equal open casting space of lower extreme forms after heat insulating board 17 and the 18 welded fastening of intermediate lamella, and the lower extreme in casting space is sealed through the apron, behind casting space casting insulation material, shelters from the upper end in casting space through the apron.

In an embodiment of the present invention, the U-shaped pipe 21 and the semicircular pipe 22 are fixed by welding, so that the manufacturing is simple and the cost is low, and the heat insulating material layer is shielded by the cover plate 16 on the upper side after the heat insulating material is cast.

The utility model discloses an embodiment, when using, according to the size of the amount of wind, will the quantity design of pulsation heat pipe 20 is for two sets of or more than two sets of, and at least a set of pulsation heat pipe 20 is established ties and is set up in the box, and the heat absorption section 11 that corresponds is established ties among at least a set of pulsation heat pipe 20, and the heat extraction section 13 that corresponds is established ties among at least a set of pulsation heat pipe 20, and heat extraction section 12 connects gradually in at least a set of pulsation heat pipe 20 to cut apart the heat absorption section 11 with the heat extraction section 13 of establishing ties.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (5)

1. The finned pulsating heat pipe heat exchanger is characterized by comprising a box body and a pulsating heat pipe of a closed loop, wherein at least part of the pulsating heat pipe is arranged in the box body, a working medium is filled in the pulsating heat pipe, the pulsating heat pipe is divided into a heat absorption section, a heat insulation section and a heat exhaust section through a left end plate, a right end plate and two heat insulation plates, the pulsating heat pipe of the heat absorption section and the heat exhaust section is respectively sleeved with a plurality of fins, and a heat insulation material layer is cast in a space where the heat insulation section is located.

2. The finned pulsating heat pipe heat exchanger of claim 1, wherein the two heat insulation plates are connected by two intermediate plates, and the heat insulation plates and the intermediate plates are welded and fixed to form a casting space for casting the heat insulation material layer.

3. The finned pulsating heat pipe heat exchanger as recited in claim 1, wherein the pulsating heat pipe comprises a plurality of U-shaped pipes, the U-shaped pipes are fixed to the fins by a pipe expansion process after being inserted into the first through holes of the fins, adjacent U-shaped pipes are connected in series by semicircular pipes and then connected by a closed-loop connecting pipe, and the closed-loop connecting pipe is provided with a connecting port for vacuum pumping and liquid injection.

4. The finned pulsating heat pipe heat exchanger as claimed in claim 3, wherein the number of the pulsating heat pipes is two or more, at least one group of the pulsating heat pipes is arranged in the box in series, corresponding heat absorbing sections of at least one group of the pulsating heat pipes are connected in series, corresponding heat discharging sections of at least one group of the pulsating heat pipes are connected in series, and the heat insulating sections of at least one group of the pulsating heat pipes are connected in sequence to divide the heat absorbing sections and the heat discharging sections which are connected in series.

5. The finned pulsating heat pipe heat exchanger as claimed in claim 1, wherein the box body comprises two cover plates, a left end plate and a right end plate are disposed between the two cover plates, a space where the heat absorbing section is located is surrounded by the cover plates, the left end plate and the heat insulating plate to form a heat absorbing space, a space where the heat dissipating section is located is surrounded by the cover plates, the right end plate and the heat insulating plate to form a heat dissipating space, the left end plate and the right end plate are provided with second through holes for the pulsating heat pipes to pass through, and the pulsating heat pipes are inserted into the second through holes and then fixed to the left end plate and the right end plate through a pipe expanding process.

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