WO2001014815A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
WO2001014815A1
WO2001014815A1 PCT/CN2000/000113 CN0000113W WO0114815A1 WO 2001014815 A1 WO2001014815 A1 WO 2001014815A1 CN 0000113 W CN0000113 W CN 0000113W WO 0114815 A1 WO0114815 A1 WO 0114815A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
heat exchange
heat medium
row
heating
Prior art date
Application number
PCT/CN2000/000113
Other languages
French (fr)
Chinese (zh)
Inventor
Feng Lang
Original Assignee
Feng Lang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to CN 99117045 priority Critical patent/CN1286390A/en
Priority to CN99117045.8 priority
Priority to CN00100429.8 priority
Priority to CN 00100429 priority patent/CN1307177A/en
Application filed by Feng Lang filed Critical Feng Lang
Publication of WO2001014815A1 publication Critical patent/WO2001014815A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag

Abstract

A heat exchanger includes a casing (8), an inlet (9) and an outlet (5) for heated fluid. The casing (8) contains one flat tube (3), the two end of which are connected with the inlet (9) and the outlet (5) for heated fluid respectively. A cavity (4) is formed between the tube (3) and the casing (8), the heat of a high temperature fluid flowing in the cavity (4) is transferred to the heated fluid flowing in the tube (3). The invention may be used as an exhaust heat recovery device of motor vehicle for heating of the passenger compartment.

Description

 Heat exchanger

Technical field

 The invention relates to a heat exchange device. Specifically, it relates to a heating device that obtains heating by using the recovered engine exhaust heat energy as an energy source. technical background

 Heat exchangers are widely used in chemical, petroleum, pharmaceutical, and HVAC engineering fields, resulting in heat exchangers of various models and specifications, most commonly used tube heat exchangers, which are suitable for different occasions. It is composed of a head, a head, a partition, a heat exchange box and the like. Although it has the advantages of simple structure and low cost, due to the problems of its structural design, the adopted pipe diameter is large and the heat dissipation pipe is relatively long, so that its heat exchange efficiency is low, the pipe resistance is large, and the heat exchange uniformity is poor. Its large volume and poor anti-vibration performance severely restrict its scope of application.

 The existing heating air-conditioning has a complicated structure, especially the heating and air-conditioning used in conjunction with the engine. Not only is the structure complicated, but it also consumes the useful power of the engine. The independent fuel-based heating and air-conditioning consumes a lot of fuel, and the structure is not simple. . Brief description of the invention

 An object of the present invention is to overcome the shortcomings of the prior art and provide an efficient heat exchanger with a simple and reasonable structure, high heat exchange efficiency, good temperature tolerance, and long service life.

 Another object of the present invention is to provide a heating and air-conditioning device driven by recovering thermal energy wasted in the exhaust gas of an engine, which saves energy and has a simple structure.

 Therefore, the present invention provides a heat exchange device, which includes a heat medium injection pipe and a heat medium discharge pipe, and is characterized in that a row of pipes is in fluid communication with the heat medium injection pipe and the heat medium discharge pipe at both ends thereof. They communicate with each other. They are located in a shell of the heat exchange device to form a heat exchange cavity, and a heat medium flowing in the row of tubes exchanges heat with a high temperature fluid.

The invention also provides a heating and air-conditioning device for a motor vehicle. The air-conditioning device includes a heat medium source and a heat medium conveying device. A heat recovery device connected to the engine exhaust is provided with a row of tubes in the heat recovery device, which is in fluid communication with the heat medium conveying device, so that the heat medium flowing in the row tubes exchanges heat with the engine exhaust gas. Brief description of the drawings

 The specific structure and working principle of the present invention will be described in detail below with reference to the drawings.

 FIG. 1 is a schematic diagram of a system structure of an embodiment of a heating device according to the present invention.

 Fig. 2 is a partially cutaway front view of the heat exchanger of the present invention.

 3A-3C are enlarged views of part A in FIG. 2, respectively, showing various embodiments of the section of the row of pipes.

 FIG. 4 is a cross-sectional view of an embodiment of the heat exchange cavity taken along the line C-C in FIG. 2. FIG. 5 is a simplified perspective view of the heat exchange core shown in FIG. 4.

 FIG. 6 is a cross-sectional view of another embodiment of the heat exchange cavity taken along the line C-C in FIG. 2. FIG. 7 is a simplified perspective view of the heat exchange core shown in FIG. 6. '

 FIG. 8 is a cross-sectional view of another embodiment of the heat exchange cavity taken along the line C-C in FIG. 2. FIG. 9 is a simplified perspective view of the heat exchange core shown in FIG. 8.

 FIG. 10 is a front view of the corrugated spoiler single pipe shown in FIG. 8.

 Fig. 11 is an end view of a corrugated spoiler single tube. Detailed description of the invention

Referring first to FIG. 1, FIG. 1 illustrates a system structure of an embodiment of a heating device according to the present invention. The device includes a heat recovery device (heat exchanger) 1. a radiator 20, a liquid storage tank 30, a balance tank 40, a liquid pump 50, a pressure reducing valve 60, a balance gas valve 70, an engine 80, and the components are connected to each other To form a loop. Its working principle is: First, connect the heat recovery device 1 to the exhaust of the engine 80, and let the engine exhaust gas pass through the heating chamber of the heat recovery device 1; pump the heat transfer medium from the liquid storage tank 30 into the heat through the liquid pump 50 The heat recovery is performed in the recoverer 1, and the heat-conducting medium after the heat recovery enters the radiator 20, Dissipate heat into the environment for heating. The heat-dissipating heat-conducting medium is returned to the liquid storage tank 30 and then the heating cycle is repeated. When a certain pressure is generated in the entire heating system, the decompression valve 60 in the liquid storage tank 30 is automatically opened to communicate with the balance tank 40, and the balance valve 70 on the balance tank 40 is directly connected to the atmosphere, so as to achieve the purpose of decompression. The pressure relief 60 of the liquid storage tank 3 is automatically closed after being pressed.

 Fig. 2 shows a heat exchanger 1 for a heating device. As shown in FIG. 2, the heat exchanger includes a heat exchanger shell 8. In this embodiment, the heat exchanger shell is made into a square tube shape, but the present invention is not limited to this, and it may be cylindrical. Shape or any other suitable shape. The heat exchanger shell 8 defines a heat exchange cavity 4, and a heat exchange core is provided in the cavity. The heat exchange core includes a row of tubes 3, which are formed by two thin substrates with concave and convex grooves, or sandwiched by narrow strips and the like sandwiched between two flat thin substrates to form a sandwich guide groove. tube. Those skilled in the art should know that other methods can be used to make the pipe of the present invention. The cross section of the row of pipes 3 may have various forms as shown in Figs. 3A to 3C, which are partially enlarged.

 FIG. 4 is a cross-sectional view of an embodiment of the heat exchange cavity taken along the line C-C in FIG. 2, showing the arrangement structure of the heat exchange core. Among them, the row of tubes 3 may be wavy, or any appropriate arrangement that is beneficial to improve the heat exchange efficiency. Both ends of the discharge pipe 3 are in fluid communication with the heat medium injection pipe 1 and the heat medium discharge pipe 2, respectively. With reference to Figs. 1 and 4, a heat exchange cavity inlet 6 and a heat exchange cavity outlet 7 are provided at two ends of the heat exchanger shell 8, respectively. Near the inlet 6 and the outlet 7, heat medium discharge nozzle 10 and heat medium injection nozzle 9, respectively, are provided, which are in fluid communication with the corresponding heat medium discharge pipe 2 and heat medium injection pipe 1, respectively.

The operation of the heat exchanger 1 of the present invention will be described below with reference to FIGS. 2-5. The heat medium injection pipe 1 and the heat medium discharge pipe 2 are in communication with both ends of the pipe 3 and are placed in the heat exchanger shell 8 to form a heat exchange cavity 4. The heat medium injection nozzle 9 is placed at the heat exchange cavity outlet 7 and the heat medium discharge nozzle 10 is placed at the heat exchange cavity inlet 6 to increase the heat convection effect. The present invention is provided in a state where the heat medium injection pipe 1 is in the lower part and the heat medium discharge pipe 2 is in the upper part. A high-temperature liquid or gas is passed into the heat exchange chamber, and at the same time, the heat exchange medium is injected through the heat medium injection nozzle 9. At this time, the heat exchange medium will exchange heat through the tube 3, and then from the heat medium The discharge nozzle 10 is discharged. In this process, because the forming substrate of the tube 3 is very thin and the diameter of the channel tube is extremely small, the heat exchange medium performs sufficient heat exchange with the high-temperature liquid and gas in the heat exchange chamber 4 to increase the temperature of the heat exchange medium. High, and the temperature of high-temperature gas and liquid decreases, thus achieving the purpose of heat exchange. The sandwich guide groove form in the tube structure adopted by the invention has the function of a capillary tube, which is easy to form a thermal directional convection effect, which is conducive to the flow of the medium, greatly reducing the resistance in the tube and improving the heat exchange efficiency. At the same time, the form of piping can greatly improve the uniform performance of heat exchange.

 6 and 7 show the structure of a heat exchange chamber 4 'according to a second embodiment of the present invention. The structure of the heat exchange cavity 4 'is similar to that of the first embodiment. Therefore, the same or similar parts are given the same or similar reference numerals.

 It can be seen from FIGS. 6 and 7 that a continuous spoiler fin group 5 is coupled between the outer tube walls of the row tube 3.

The operation of the heat exchanger 1 having the heat exchange chamber 4 'will be described below with reference to Figs. 2, 6 and 7. The heat medium injection pipe 1 and the heat medium discharge pipe 2 communicate with both ends of the pipe 3 and are placed in the heat exchanger shell 8 to form a heat exchange cavity 4 '. The continuous spoiler fin group 5 is connected between the outer tube walls of the row tube 3 to increase the heat exchange area. The heat medium injection nozzle 9 is placed at the heat exchange cavity outlet 7 and the heat medium discharge nozzle 10 is placed at the heat exchange cavity inlet 6 to increase the heat convection effect. In the present invention, a state in which the heat medium injection pipe 1 is in the lower part and the heat medium discharge pipe 2 is in the upper part is provided. A high-temperature liquid or gas is passed into the heat exchange chamber, and at the same time, the heat exchange medium is injected through the heat medium injection nozzle 9. At this time, the heat exchange medium will exchange heat through the discharge pipe 3 and then be discharged from the heat medium discharge pipe port 10. In this process, because the forming substrate of the tube 3 is very thin and the diameter of the channel tube is extremely small, the heat exchange medium performs sufficient heat exchange with the high temperature liquid and gas in the heat exchange cavity 4 ', so that the temperature of the heat exchange medium When the temperature rises, the temperature of the high-temperature gas and liquid decreases, thereby achieving the purpose of heat exchange. The sandwich guide groove form in the tube structure adopted by the invention has the function of a capillary tube, which is easy to form a thermal directional convection effect, which is conducive to the flow of the medium, greatly reducing the resistance in the tube and improving the heat exchange efficiency. The continuous spoiler fin set further increases the heat exchange area. At the same time, the form of piping can greatly improve the uniform performance of heat exchange. 8-11 show the structure of a heat exchange cavity 4 "according to a third embodiment of the present invention. The structure of the heat exchange cavity 4" is similar to the structure of the first embodiment. Therefore, the same or similar components use the same or Similar numbers.

 As can be seen from Figs. 8 and 9, a corrugated spoiler single tube 11 is placed between the outer tube walls of the row tube 3, and the tube of the single tube 11 and the end of the tube are connected to form a continuous spoiler tube group 5 '. It is clamped in the row pipe 3. Figures 10 and 11 show a corrugated single-flow tube 11.

 The operation of the heat exchanger 1 having a heat exchange cavity 4 "is described below with reference to Figs. 2, 8 and 9. Since the heat medium injection pipe 1 and the heat medium discharge pipe 2 are in communication with both ends of the pipe 3, and are placed in Inside the heat exchanger shell 8 thereby forming a heat exchange cavity 4 ". The corrugated spoiler single tube 11 is placed between the outer tube walls of the row tube 3, and the tube of the single tube 11 and the end of the tube are connected to each other to form a continuous spoiler tube group 5 'clamped in the row tube 3 to increase Heat exchange area. The heat medium injection nozzle 9 is placed at the heat exchange cavity outlet 7 and the heat medium discharge nozzle 10 is placed at the heat exchange cavity inlet 6 to increase the heat convection effect. In the present invention, the state where the heat medium injection pipe 1 is at the lower part and the heat medium discharge pipe 2 is at the upper part is provided. A high-temperature liquid or gas is passed into the heat exchange chamber, and at the same time, the heat exchange medium is injected through the heat medium injection nozzle 9. At this time, the heat exchange medium will exchange heat through the discharge pipe 3, and then be discharged from the heat medium discharge pipe port 10. In this process, because the forming substrate of the tube 3 is very thin and the diameter of the channel tube is extremely small, the heat exchange medium performs sufficient heat exchange with the high temperature liquid and gas in the heat exchange cavity 4 ", so that the temperature of the heat exchange medium When the temperature rises, the temperature of the high-temperature gas and liquid decreases, thereby achieving the purpose of heat exchange. The sandwich guide groove in the tube structure used in the present invention has the function of a capillary tube, and it is easy to form a thermal directional convection effect, which is beneficial to the flow of the medium. The resistance in the row of tubes is reduced, and the heat exchange efficiency is improved. The setting of the corrugated spoiler tube group further increases the heat exchange area. At the same time, the form of the row of tubes can greatly improve the uniform performance of heat exchange. Industrial Applicability

In summary, the heat exchanger of the present invention has a simple and reasonable structure, simple manufacture, high heat exchange efficiency, uniform heat exchange, small size and compactness, and good vibration resistance, and is suitable as a replacement product of the existing tube heat exchanger. . The heating device of the present invention having the above heat exchanger has the following advantages:

 (1) Energy saving: The required heat is recovered from the engine exhaust without providing additional energy.

 (2) Environmental protection: Various kinds of waste heat discharged into the atmosphere can be recovered as power source, reducing the greenhouse effect of the earth.

 (3) Low price: The device of this system is small in size, simple to manufacture and low in cost.

 (4) Long life: This system has fewer moving parts, low wear rate, and strong repair and regeneration.

 (5) Wide application area: As long as there is a heat source available for recycling, the system device can be used for heating.

 Those of ordinary skill in the art should know that the foregoing description of the device of the present invention is not limited to the embodiments shown and described in conjunction with the drawings. For example, the heat exchange device and heating device of the present invention can also be applied in the fields of chemical industry, petroleum, pharmaceutical, HVAC engineering and the like. Therefore, the present invention may have many variations and modifications without departing from the scope of the invention defined by the claims.

Claims

Rights request
What is claimed is: 1. A heat exchange device comprising a heat medium injection pipe and a heat medium discharge pipe, characterized in that a row of pipes is in fluid communication with the heat medium injection pipe and the heat medium discharge pipe at both ends thereof, and are located at A heat exchange cavity is formed in a casing of the heat exchange device, and a heat medium flowing in a row of tubes performs heat exchange with a high temperature fluid.
 2. The heat exchange device according to claim 1, characterized in that: a heat medium injection nozzle is placed at the outlet of the heat exchange chamber and is in the lower part, and a heat medium discharge nozzle is placed at the entrance of the heat exchange chamber and is in the upper part .
 3. The heat exchange device according to claim 1, characterized in that the row of tubes is formed by two thin substrates with concave and convex grooves mating or sandwiched by two thin thin substrates with a narrow strip interposed therebetween. Sandwich guide pipe.
 4. An air conditioning device for a motor vehicle, the air conditioning device comprising a heat medium source and a heat medium conveying device, characterized in that it further comprises a heat recovery device connected to the exhaust gas of the engine. A row of tubes is provided in the row, and the row of tubes is in fluid communication with the heat medium conveying device, so that the heat medium flowing in the row of tubes performs heat exchange with the engine exhaust.
 5. The heating and air-conditioning apparatus according to claim 4, wherein the heat medium source is a liquid storage tank, the heat medium conveying device is a liquid pump, and the heat recovery device forms a circulation loop; the circulation The circuit also includes a radiator for dissipating the recovered heat to the environment.
 6. The heating and air-conditioning apparatus according to claim 5, wherein a balance tank is in fluid communication with the liquid storage tank in a controllable manner, and is in controllable communication with the atmosphere through a balance valve, so as to be generated in the circulation circuit. When pressure is applied, pressure is reduced.
 7. The heating and air-conditioning apparatus according to claim 4, wherein the heat recovery device further comprises a heat medium injection pipe and a heat medium discharge pipe, which are in fluid communication with both ends of the discharge pipe and are located in a heat recovery shell Inside the body, a heat exchange cavity is formed.
8. The heating and air-conditioning apparatus according to claim 4, wherein a heat medium The injection nozzle is placed at the outlet of the heat exchange chamber and is in the lower part, and a heat medium discharge nozzle is placed at the inlet of the heat exchange chamber and is in the upper part.
 9. The heating and air-conditioning apparatus according to claim 4, wherein the row of pipes is formed by two thin substrates with concave and convex grooves mating or sandwiched between two flat thin substrates with a narrow strip interposed therebetween. Sandwich guide pipe.
PCT/CN2000/000113 1999-08-25 2000-05-11 Heat exchanger WO2001014815A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN 99117045 CN1286390A (en) 1999-08-25 1999-08-25 Efficient heat exchanger with guide slots in sandwich
CN99117045.8 1999-08-25
CN00100429.8 2000-01-31
CN 00100429 CN1307177A (en) 2000-01-31 2000-01-31 Warming air conditioner driven by heat energy of engine tail gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU45344/00A AU4534400A (en) 1999-08-25 2000-05-11 Heat exchanger

Publications (1)

Publication Number Publication Date
WO2001014815A1 true WO2001014815A1 (en) 2001-03-01

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ID=25739167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2000/000113 WO2001014815A1 (en) 1999-08-25 2000-05-11 Heat exchanger

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AU (1) AU4534400A (en)
WO (1) WO2001014815A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1972847U (en) * 1967-09-09 1967-11-16 Coleman & Co K G Imp Exp Lotto game.
US3712372A (en) * 1971-03-01 1973-01-23 Oilin Corp Method and apparatus for deforming a flat on parts of metal strip-type tubing while leaving other parts undeformed
DE2705178A1 (en) * 1976-03-18 1977-09-29 I P R A Ind Piemontese Radiato Heat Exchangers
US4705214A (en) * 1985-06-04 1987-11-10 Navistar International Transportation Corp. Independent exhaust gas heat system
US4962811A (en) * 1988-10-18 1990-10-16 Showa Aluminum Corporation Heat exchanger
DE4141556A1 (en) * 1991-12-17 1993-06-24 Behr Gmbh & Co Heat exchanger for exhaust system in motor vehicle - has casing with exchanger medium tube, with tube ends connected to intake and discharge outside casing
CN2175134Y (en) * 1993-07-19 1994-08-24 鲁尚文 Energy-saving and heating arrangement for automobile
CN2214314Y (en) * 1994-11-19 1995-12-06 抚顺客车厂 Liquid circulating heating device for automobile and bus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1972847U (en) * 1967-09-09 1967-11-16 Coleman & Co K G Imp Exp Lotto game.
US3712372A (en) * 1971-03-01 1973-01-23 Oilin Corp Method and apparatus for deforming a flat on parts of metal strip-type tubing while leaving other parts undeformed
DE2705178A1 (en) * 1976-03-18 1977-09-29 I P R A Ind Piemontese Radiato Heat Exchangers
US4705214A (en) * 1985-06-04 1987-11-10 Navistar International Transportation Corp. Independent exhaust gas heat system
US4962811A (en) * 1988-10-18 1990-10-16 Showa Aluminum Corporation Heat exchanger
DE4141556A1 (en) * 1991-12-17 1993-06-24 Behr Gmbh & Co Heat exchanger for exhaust system in motor vehicle - has casing with exchanger medium tube, with tube ends connected to intake and discharge outside casing
CN2175134Y (en) * 1993-07-19 1994-08-24 鲁尚文 Energy-saving and heating arrangement for automobile
CN2214314Y (en) * 1994-11-19 1995-12-06 抚顺客车厂 Liquid circulating heating device for automobile and bus

Also Published As

Publication number Publication date
AU4534400A (en) 2001-03-19

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