A flying wing heat exchanger capable of improving wake pressure equalization

Abstract

The present invention discloses a flying wing heat exchanger capable of improving wake pressure equalization, comprising a heat exchanger body, a flow end head is arranged at the left end of the heat exchanger body, and a wake end head is arranged at the right end of the heat exchanger body, the inner side of the heat exchanger body is divided into several parts and provided with spacer layered plates, and the outer side of the spacer layered plates is provided with a flow cavity located inside the heat exchanger body, a first heat dissipation fin body is arranged above the heat exchanger body, and a second heat dissipation fin body is arranged below the heat exchanger body, the outer surfaces of the first heat dissipation fin body and the second heat dissipation fin body are provided with a scraped wave surface, and the left end of the flow end head is elliptical. The flying wing heat exchanger capable of improving wake pressure equalization is conducive to uniform temperature heat exchange, avoids the problem of poor heat exchange efficiency, can perform cost control analysis according to actual needs, and improves the practical effect of the device.

Description

Technical Field

[0001] The present invention relates to the technical field related to heat exchangers, and in particular to a flying wing heat exchanger capable of improving wake flow pressure equalization. Background Art

[0002] A heat exchanger is a heat exchange device that uses a refrigerant to cool or heat the air. After the heat exchanger is produced, it needs to be tested to ensure the quality of the air heat exchanger. Traditional testing equipment is relatively scattered and not systematic enough, which makes the air heat exchanger testing complicated and the testing efficiency is low. In environments such as power plants and wind tunnels, condensed water will form on the inner wall of the heat exchanger when the flue gas is passed in. The condensed water forms a water film on the inner wall of the heat exchanger, making the heat transfer between the flue gas and the heat exchanger more difficult, affecting the heat transfer efficiency of the heat exchanger. Traditional elliptical tube strings often use a single-piece type. When the sheet is hot-dip galvanized, the single-piece fins need to be connected in series through rods and then hot-dip galvanized. This is not only time-consuming and labor-intensive, but also increases production costs.

[0003] Chinese patent authorization announcement number CN104567475B discloses a composite heat exchanger, characterized in that it includes: a water heat exchange body with a built-in plate-fin water heat exchange core, the top surface of the water heat exchange body is encapsulated with an upper water chamber, the bottom surface of the water heat exchange body is encapsulated with a lower water chamber, the left end of the upper water chamber top plate is provided with a water outlet pipe, the interior of the upper water chamber supports a first oil heat exchanger and a second oil heat exchanger through a rear support plate, and the front plate of the lower water chamber is provided with a water inlet pipe.

[0004] The above-mentioned existing technical solutions have the following defects: it is not convenient to perform uniform temperature heat exchange, which easily leads to poor heat exchange efficiency, is not convenient to perform cost control analysis according to actual needs, and has poor practical effect. Therefore, we propose a flying wing heat exchanger that can improve the tail flow pressure equalization to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a flying wing heat exchanger that can improve wake pressure equalization, so as to solve the problems raised in the above background technology that it is inconvenient to carry out temperature uniform heat exchange, which easily leads to poor heat exchange efficiency, is inconvenient to carry out cost control analysis according to actual needs, and has poor practical effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flying wing type heat exchanger capable of improving wake pressure equalization, comprising a heat exchanger body, a left end of the heat exchanger body being provided with an incoming flow terminal, and a right end of the heat exchanger body being provided with a wake flow terminal, the inner side of the heat exchanger body being divided into several parts and provided with spacer layered plates, and the outer side of the spacer layered plates being provided with a flow cavity located inside the heat exchanger body, a first heat dissipation fin body being provided above the heat exchanger body, and a second heat dissipation fin body being provided below the heat exchanger body, and outer surfaces of the first heat dissipation fin body and the second heat dissipation fin body being provided with scraped wave surfaces.

[0007] In a possible implementation, the left end of the incoming flow end is elliptical, and the incoming flow end and the tail flow end are fixedly connected to the heat exchanger body, and the right end of the tail flow end is triangular.

[0008] In a possible implementation, the first heat dissipating fin body and the second heat dissipating fin body are disposed in correspondence with each other up and down with respect to a center line of the heat exchanger body.

[0009] In a possible implementation, the heat exchanger body, the first heat dissipation fin body, and the second heat dissipation fin body are all integrated.

[0010] In a possible implementation, the longitudinal cross-sections of the first heat dissipating fin body 6 and the second heat dissipating fin body 7 are arc-shaped, so as to facilitate guiding the airflow.

[0011] In a possible implementation, the first heat dissipating fin bodies 6 and the second heat dissipating fin bodies 7 are equidistantly distributed on the upper and lower surfaces of the heat exchanger body 1 .

[0012] Compared with the prior art, the beneficial effects of the present invention are: the flying wing heat exchanger that can improve the tail flow pressure equalization is conducive to uniform temperature heat exchange, avoids the problem of poor heat exchange efficiency, can perform cost control analysis according to actual needs, and improves the practical effect of the device;

[0013] 1. The secondary heat transfer of the fins forms a large gradient temperature difference; the corrugated angle of the fins can enhance the heat transfer on the air side; the heat flux density of the tube body is uniform, and the transient loss is weakened; the inlet and outlet temperature difference controls the temperature gradient more advantageously, so that the temperature field is uniform and the heat exchange efficiency is high;

[0014] 2. Years of engineering experience have shown that the flying wing fin heat exchanger will not be higher than the carbon steel fin tube structure, and the flying wing fin heat exchanger includes: <1> 1. The raw material is 5 series industrial aluminum, which is easy to purchase; <2> , combine punching-piercing-hot-dip galvanizing into a production and cutting process; <3> 1. No need for hot-dip galvanizing or other surface treatments, no restrictions such as environmental protection, and the construction period is controllable; <4> , high heat transfer efficiency and reduced overall material consumption; <5> 1. The overall structure is light, the engineering accessories and cost are reduced, and the construction is convenient; <6> , long life cycle; <7> , no attenuation, and the subsequent operation and maintenance costs are greatly reduced;

[0015] 3. The flying wing type setting can reduce the waveform conditions and solve the pressure loss problem. The fin spacing can be adjusted to improve the threshold of the characteristic scale and reduce the pressure loss. The fin spacing can be arbitrarily enlarged to reduce the effect of the flow velocity between the fins on the pressure loss. At the same time, the high heat transfer efficiency can make up for the loss caused by the reduction in area.

[0016] 4. Improve the efficiency of uniform heat exchange in the temperature field. The secondary heat transfer of the fins forms a large gradient temperature difference. The corrugated wave angle of the fins can enhance the heat transfer on the air side. The heat flux density of the tank is uniform, the transient loss is weakened, and the inlet and outlet temperature difference controls the temperature gradient more advantageously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0019] Figure 3 This is a qualitative schematic diagram of the cost analysis of the present invention.

[0020] In the figure: 1, heat exchanger body; 2, incoming flow end; 3, tail flow end; 4, spacer layered plate; 5, flow cavity; 6, first heat dissipation fin body; 7, second heat dissipation fin body; 8, scraped wave surface. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-3The present invention provides a technical solution: a flying wing heat exchanger capable of improving wake pressure equalization, comprising a heat exchanger body 1 having an incoming flow terminal 2 at the left end thereof, and a wake flow terminal 3 at the right end thereof, the inner side of the heat exchanger body 1 being divided into several parts and provided with spacer layered plates 4, and a flow cavity 5 located on the inner side of the heat exchanger body 1 being opened on the outer side of the spacer layered plates 4, a first heat dissipating fin body 6 being arranged above the heat exchanger body 1, and a second heat dissipating fin body 7 being arranged below the heat exchanger body 1, and outer surfaces of the first heat dissipating fin body 6 and the second heat dissipating fin body 7 being provided with a scraped wave surface 8.

[0023] Specific as Figure 1 , Figure 2 and Figure 3 In the figure, the left end of the incoming flow terminal 2 is elliptical, and the incoming flow terminal 2 and the tail flow terminal 3 are fixedly connected to the heat exchanger body 1, and the right end of the tail flow terminal 3 is triangular; the first heat dissipating fin body 6 and the second heat dissipating fin body 7 are arranged correspondingly up and down with respect to the center line of the heat exchanger body 1, and the heat exchanger body 1, the first heat dissipating fin body 6 and the second heat dissipating fin body 7 are integrated; the longitudinal cross-section shape of the first heat dissipating fin body 6 and the second heat dissipating fin body 7 is arc-shaped, which is convenient for guiding and draining the airflow, and the first heat dissipating fin body 6 and the second heat dissipating fin body 7 are equidistantly distributed on the upper and lower surfaces of the heat exchanger body 1, respectively, which is convenient for effectively guiding, draining and discharging the hot airflow.

[0024] When using the flying wing heat exchanger that can improve the wake pressure equalization, first assemble the various parts, and then firmly install the heat exchanger body 1 and the docking surface. Figure 1 and Figure 2 As shown in the figure, the left end of the incoming flow end 2 is set to be elliptical, and the incoming flow end 2 and the tail flow end 3 are fixedly connected to the heat exchanger body 1, and the right end of the tail flow end 3 is triangular, which can make the airflow circulate and evacuate better, and the first heat dissipation fin body 6 and the second heat dissipation fin body 7 are arranged correspondingly up and down about the center line of the heat exchanger body 1, and the heat exchanger body 1, the first heat dissipation fin body 6 and the second heat dissipation fin body 7 are all integrated, which can avoid the thermal resistance generated affecting the heat dissipation performance, and the outer surfaces of the first heat dissipation fin body 6 and the second heat dissipation fin body 7 are scraped by a CNC tool, so that the longitudinal section of the first heat dissipation fin body 6 and the second heat dissipation fin body 7 can form a flying wing shape, so as to increase the average heat flux density, so that the water flow can circulate in the flow cavity 5 under the separation effect of the spacer layer plate 4, and the interior of the flow cavity 5 can be set to be corrugated or uneven according to actual conditions, so as to increase the dredging of the airflow.

[0025] Specific as Figure 3As shown in , many years of engineering experience have shown that the flying wing fin heat exchanger will not be higher than the carbon steel fin tube structure, where the flying wing fin heat exchanger includes: <1> 1. The raw material is 5 series industrial aluminum, which is easy to purchase; <2> , combine punching-piercing-hot-dip galvanizing into a production and cutting process; <3> 1. No need for hot-dip galvanizing or other surface treatments, no restrictions such as environmental protection, and the construction period is controllable; <4> , high heat transfer efficiency and reduced overall material consumption; <5> 1. The overall structure is light, the engineering accessories and cost are reduced, and the construction is convenient; <6> , long life cycle; <7> , no attenuation, and the subsequent operation and maintenance costs are greatly reduced.

[0026] Specific as Figure 3 As shown in the figure, local reflow occurs near the trailing edge of the heat exchange tube. After development, the reflow zone disappears not far downstream. Along the streamline direction, the static pressure decreases slightly, but the static pressure distribution of the cross section is uniform. The average static pressure and average velocity of the inlet and outlet under the static pressure state include: inlet: average static pressure is 100827.1 [Pa], average velocity is 7.00 [m / s]; outlet: average static pressure is 100769.0 [Pa] (△P=58.1), average velocity is 7.01 [m / s]. The new flying wing fin heat exchanger has fins supported by the scraping process. The heat sink and the heat pipe are integrated to achieve body heat dissipation, no contact thermal resistance, no attenuation, improve heat transfer efficiency, and simplify the process chain.

[0027] Specific as Figure 1 In the process, the flying wing type setting can reduce the waveform conditions and solve the pressure loss problem. The fin spacing can be adjusted to improve the characteristic scale conditions and thus reduce the pressure loss. The fin spacing can be arbitrarily enlarged to reduce the effect of the flow velocity between the fins on the pressure loss. At the same time, the high heat transfer efficiency can make up for the loss caused by the reduction in area. The efficiency of uniform heat exchange in the temperature field can be improved, and the secondary heat transfer of the fins forms a large gradient temperature difference. The corrugated wave angle of the fins can enhance the heat transfer on the air side, the heat flux density of the tank is uniform, the transient loss is weakened, and the inlet and outlet temperature difference controls the temperature gradient more advantageously.

[0028] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flying wing heat exchanger capable of improving wake pressure equalization, characterized in that: include: A heat exchanger body (1), wherein the left end of the heat exchanger body (1) is provided with an incoming flow terminal (2), and the right end of the heat exchanger body (1) is provided with a tail flow terminal (3), the inner side of the heat exchanger body (1) is divided into several parts and provided with a spacer layered plate (4), and the outer side of the spacer layered plate (4) is provided with a flow cavity (5) located on the inner side of the heat exchanger body (1), a first heat dissipation fin body (6) is provided above the heat exchanger body (1), and a second heat dissipation fin body (7) is provided below the heat exchanger body (1), and the outer surfaces of the first heat dissipation fin body (6) and the second heat dissipation fin body (7) are provided with a scraped wave surface (8).

2. A flying wing heat exchanger capable of improving wake pressure equalization according to claim 1, characterized in that: The left end of the incoming flow end (2) is elliptical, and the incoming flow end (2) and the tail flow end (3) are both fixedly connected to the heat exchanger body (1), and the right end of the tail flow end (3) is triangular.

3. A flying wing heat exchanger capable of improving wake pressure equalization according to claim 1, characterized in that: The first heat dissipation fin body (6) and the second heat dissipation fin body (7) are arranged in correspondence with each other up and down with respect to the center line of the heat exchanger body (1).

4. A flying wing heat exchanger capable of improving wake pressure equalization according to claim 2, characterized in that: The heat exchanger body (1), the first heat dissipation fin body (6) and the second heat dissipation fin body (7) are all integrated.

5. The flying wing heat exchanger capable of improving wake pressure equalization according to claim 3, characterized in that: The longitudinal cross-sections of the first heat dissipation fin body (6) and the second heat dissipation fin body (7) are arc-shaped, which facilitates the guidance and drainage of the airflow.

6. A flying wing heat exchanger capable of improving wake pressure equalization according to claim 3, characterized in that: The first heat dissipation fin bodies (6) and the second heat dissipation fin bodies (7) are respectively distributed at equal distances on the upper and lower surfaces of the heat exchanger body (1).

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