TWI801732B - Heat exchange module and method of heat exchange - Google Patents

Abstract

A heat exchange module includes a plurality of spray column array heat exchangers. Each of the spray column array heat exchangers includes a housing and a plurality of spray columns, wherein the housing defines a heat exchange room and is configured for a first fluid to pass through the heat exchange room, and the plurality of spray columns are arranged in the housing in a staggered array configuration and each are configured for a second fluid to pass therethrough. The spray columns in said staggered array configuration improves the heat transfer efficiency and thus promoting the heat exchange. Moreover, each of the spray columns is equipped with a swirl generator, such as twisting plates and various types of swirl guide fins or swirl guide grooves, to make the second fluid a swirl jet, thus improving the heat transfer efficiency by close range jet impaction. The second fluid, after passing through the spray columns, impacts the outer surface of a next spray column array heat exchanger and flows into the spray columns of said next spray column array heat exchanger to increase the heat exchange area and the convective heat transfer coefficient of the first fluid and the second fluid.

Description

Heat exchange module and heat exchange method

The invention relates to a heat exchange module, especially a heat exchange module with a vortex generator.

The general electric power chain cooling system transmits the thermal power from the battery stack, motor driver, motor stator, motor rotor and transmission device to the atmosphere through the central cooling system in a forced water (oil) cooling cycle.

The traditional central cooling system uses tube-fin heat exchange modules, such as the "heat exchanger" in the Republic of China Patent Publication No. 487797, as shown in the first picture of 487797, which mainly includes multiple heat exchange tubes and multiple continuous bends heat dissipation fins and a plurality of header boxes, wherein each of the heat exchange tubes is arranged at intervals, the heat dissipation fins are arranged between the two heat exchange tubes, and the two header boxes are respectively connected to the The above-mentioned heat exchange tubes are used to form a circulating water circuit.

However, in the above-mentioned traditional tube-fin heat exchange module, the airflow between the cooling fins is generally a typical boundary layer type flow, and the convective heat transfer coefficient is relatively low, so it is often used to increase the heat dissipation area of the fins. The method improves the cooling power of the radiator, but increases the weight, volume and airflow field resistance of the cooling system, and fouling between fins often occurs during operation. In addition, the flow field in the heat exchange tube is a typical straight tube turbulent flow, and the heat transfer enhancement effect is weak.

In order to cope with the development of lightweight and miniaturized electric power chains, it is urgent to further improve the cooling performance of traditional heat exchange modules.

Therefore, in order to improve the cooling performance of the heat exchange module, the inventor proposes an array spray column heat exchanger, which includes a shell and a plurality of spray columns. The shell part defines a heat exchange chamber, and there are two delivery ports on the shell part, and the delivery ports communicate with the heat exchange room for a first fluid to pass through the heat exchange room. Each of the spray column arrays is distributed in the heat exchange chamber, and the spray columns all define a channel, which runs through the shell, and the channel is used for a second fluid to pass through, so that the first fluid and the second fluid can pass through each other. The fluid performs heat exchange, and a spoiler is provided on a surface of the channel or/and the spray column adjacent to the heat exchange chamber to improve cooling performance.

Further, the spoiler can be spiral fins or various fins.

Further, vortex generators, such as twisted vanes or various vortex guide vanes or guide grooves, can be installed in each spray column, so that the passing second fluid becomes a swirl jet.

Further, the spray columns in each column are arranged in a staggered manner with the spray columns in adjacent columns.

Further, there are a plurality of channels on the shell, and the channels communicate with each other alternately, and each of the channels is respectively located between two adjacent spray columns.

The present invention is also a heat exchange module, comprising the array spray column heat exchanger as mentioned above, the spray column of each said array spray column heat exchanger and the adjacent said array spray column heat exchanger The spray columns correspond to each other.

Further, there is a distance between each spray column heat exchanger array and adjacent spray column heat exchanger arrays, so as to introduce external fluid.

Further, the positions of the spray columns of each of the array spray column heat exchangers are staggered from the positions of the spray columns of the adjacent array spray column heat exchangers.

Further, the distance is between 0.1 times and 0.5 times the diameter of the channel.

The present invention is also a heat exchange module, which includes a plurality of array spray column heat exchangers, and each of the array spray column heat exchangers includes a shell and a plurality of spray columns, the shell defines a heat exchange chamber, and The shell allows a first fluid to pass through the heat exchange chamber. A plurality of spray columns are arranged in the shell in a staggered array, and the spray columns of two adjacent array spray column heat exchangers are partially or completely staggered, and each of the spray columns can provide a first The two fluids pass through, and the heat exchange is carried out by applying the heat transfer enhancement method of the spray column array. Install vortex generators in each spray column, such as twisted vanes or various vortex guide vanes or guide grooves, so that the second fluid becomes a swirl jet, improving the heat transfer enhancement effect of the short-distance impact spray column. After the second fluid passes through the spray column, it will impact the next set of array spray column heat exchangers and flow into the spray columns of the next set of array spray column heat exchangers to increase the heat exchange between the first fluid and the second fluid Area and convective heat transfer coefficient.

The present invention is also a fluid heat exchange method, comprising: a plurality of arrays of spray column heat exchangers are adjacently arranged, each array of spray column heat exchangers includes a shell and a plurality of spray columns, and the shell defines a heat exchange chamber , there are two delivery ports on the shell, the delivery ports are all connected to the heat exchange chamber, the spray column array is distributed in the heat exchange chamber, and the spray columns all define a channel, and the channel runs through both sides of the shell. A first surface and a second surface of one side, and there is a distance between the second surface of one array of spray column heat exchangers and the first surface of adjacent arrays of spray column heat exchangers; and a first A fluid passes through the heat exchange chamber, and a second fluid passes through the channel of the spray column to exchange heat between the first fluid and the second fluid, and when the second fluid passes through one of the spray column arrays After the spray column of the heat exchanger, the second fluid impacts the first surface of the adjacent array spray column heat exchanger through the gap to form an impact spray column.

According to the above-mentioned technical features, the following effects can be achieved:

1. A spoiler is provided on the surface or/and channel of the spray column to improve cooling performance.

2. The spoiler on the spray column can be any one or combination of spiral fins and fins, which helps to enhance the heat transfer of the passing fluid (such as water, oil and other cooling fluids).

3. The vortex generator in the spray column can be any one or a combination of twisted fins, vortex fins, and vortex guide grooves, so that the passing fluid (such as air) becomes a vortex spray column to enhance the heat transfer effect.

4. Between two adjacent array spray column heat exchangers, the positions of the spray columns are staggered from each other, so that the passing fluid can impact the downstream array spray column heat exchanger, further enhancing the heat transfer effect.

5. There are a plurality of staggered channels on the array spray column heat exchanger to improve the fluidity between two adjacent array spray column heat exchangers after the impact of the fluid, and to increase the first fluid and the second fluid The heat transfer area and convective heat transfer coefficient.

100: heat exchange module

1: Array spray column heat exchanger

11: shell

11A: board body

11B: shell seat

111: heat exchange chamber

112: delivery port

113: The first side

114: second side

115: channel

12: spray column

121: channel

122: surface

123: Vortex generator

124: spoiler

200: Fan module

300: connector

301: Bolt

302: Nut

T: spacing

[The first figure] is a three-dimensional appearance schematic diagram of an embodiment of the present invention.

[Second Figure] is a three-dimensional exploded schematic diagram of an embodiment of the present invention.

[The third figure A] is a schematic plan view of an embodiment of the present invention.

[The 3rd Fig. B] is the second schematic plan view of the embodiment of the present invention.

[Fourth Figure] is the cross-section and schematic diagram of IV-IV in the first figure.

[Fifth Picture] is the cross-section and schematic diagram of V-V in the first picture.

Based on the above technical features, the main functions of the heat exchange module and the heat exchange method of the present invention will be clearly presented in the following embodiments.

Please refer to the first figure, which discloses that the heat exchange module (100) of the embodiment of the present invention includes a plurality of array spray column heat exchangers (1) arranged in series. In this embodiment, a fan module (200) is disposed on one side of the heat exchange module (100) for introducing airflow. Each array spray column heat exchanger (1) and the wind The fan modules (200) can be fixed in series by a plurality of connectors (300) [such as bolts (301) and nuts (302)].

Please refer to the second figure to match the first figure, each of the spray column array heat exchangers (1) includes a shell (11) and a plurality of spray columns (12). The shell (11) for example comprises a plate body (11A) and a shell base (11B), and the shell base (11B) can be in the shape of ㄇ, so as to be placed between the plate body (11A) and the shell base (11B). A heat exchange chamber (111) and two transfer ports (112) are defined between them, so that the first fluid passes through the heat exchange chamber (111). The first fluid is, for example, water, oil and other cooling liquids. The delivery port (112) can be used to communicate with external pipelines to form a circulating waterway. The shell (11) has an opposite first surface (113) and a second surface (114), and the first surface (113) and the second surface (114) are located on the plate body (11A) and the Two opposite outer sides of the shell seat (11B). Preferably, there are a plurality of grooves (115) on the first surface (113), the grooves (115) are alternately communicated with each other, and each of the grooves (115) is respectively located in two adjacent Between the spray columns (12).

Please refer to the second figure to match the first figure, each of the spray columns (12) arrays is distributed in the heat exchange chamber (111), and the spray columns (12) of each column are connected with the spray columns of the adjacent columns ( 12) It can be arranged in a staggered manner. The spray column (12) is, for example, in the shape of a circular tube, defining a channel (121), and the channel (121) runs through the first surface (113) and the second surface (114). A vortex generator (123) is arranged in the channel (121) of the spray column (12), so that the passing second fluid (such as air and other fluids) can generate vortices to enhance the heat transfer effect, and the vortex generates The device (123) is, for example, a twisted sheet, but it can also be a vortex vane, a vortex guide groove or a combination. One surface (122) of the spray column (12) adjacent to the heat exchange chamber (111) is provided with a spoiler (124), and the spoiler (124) is, for example, a spiral fin, but it can also be Various fins or combinations.

As shown in the third figure A and the third figure B, they are the planar schematic diagrams of the array spray column heat exchangers (1) of different layers respectively. Compared with the third figure A and the third B figure, it can be seen that the array spray column heat exchangers (1) in each layer The positions of the spray columns (12) of the heat exchanger (1) and the positions of the spray columns (12) of the adjacent array spray column heat exchangers (1) are staggered from each other The positions of the channels (115) are also staggered from each other, so that the passing fluid can impact the downstream array spray column heat exchanger (1), further enhancing the heat transfer effect.

Continue referring to the fourth and fifth figures, the second surface (114) of each of the spray column heat exchanger arrays (1) is connected to the first surface of the adjacent spray column heat exchanger array (1). The surfaces (113) are opposite to each other, so that fluid (such as air flow) can impact on the channel (115), and the fluid can improve fluency and heat transfer through the channel (115). There is a distance (T) between each array spray column heat exchanger (1) and the adjacent array spray column heat exchanger (1) to introduce external fluid and apply the air entrainment principle. ), the low-temperature airflow is sucked from the outside, and the distance (T) can be between 0.1 times and 0.5 times the diameter of the channel (121), so as to impose a very small separation distance (extremely small separation distance) impact spray column array to enhance heat transfer, reduce the volume of the heat exchanger and increase the heat exchange area, and together increase the heat exchange area to total volume ratio of the heat exchange module.

It should be added that the heat exchange module of the embodiment of the present invention can be applied to the electric power chain cooling system, but is not limited thereto. For example, it can also be applied to various fields with heat exchange requirements such as electronic products and air conditioners.

Based on the description of the above-mentioned embodiments, it is possible to fully understand the operation of the present invention, use and the effect that the present invention produces, but the above-mentioned embodiments are only preferred embodiments of the present invention, and should not be used to limit the implementation of the present invention. The scope, that is, the simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention, all fall within the scope of the present invention.

100: heat exchange module

1: Array spray column heat exchanger

200: Fan module

300: connector

301: Bolt

302: Nut

Claims (5)

A fluid heat exchange method, comprising: a plurality of arrays of spray column heat exchangers are adjacently arranged, each array of spray column heat exchangers includes a shell and a plurality of spray columns, the shell defines a heat exchange chamber, and the shell There are two delivery ports on the top, the delivery ports are all connected to the heat exchange chamber, the spray column array is distributed in the heat exchange room, and the spray columns all define a channel, and the channel runs through one of the first two sides of the shell. One side and a second surface, and there is a distance between the second surface of one of the spray column heat exchanger arrays and the first surface of the adjacent spray column heat exchanger array, and one of the spray column array heat exchangers The spray column of the heat exchanger is staggered from the spray column of the adjacent spray column heat exchanger; and a first fluid passes through the heat exchange chamber, and a second fluid passes through the channel of the spray column , to exchange heat between the first fluid and the second fluid, and when the second fluid passes through the spray column of one of the array spray column heat exchangers, the second fluid impacts the adjacent The first face of the array jet heat exchanger forms an impingement jet. A heat exchange module for performing the fluid heat exchange method described in claim 1, the heat exchange module includes a plurality of array spray column heat exchangers, and each of the array spray column heat exchangers includes a shell A piece and a plurality of spray columns, the shell defines a heat exchange chamber, and the shell allows a first fluid to pass through the heat exchange chamber, the plurality of spray columns are arranged in a staggered array in the shell, and the adjacent The spray columns of the two array spray column heat exchangers are partially or completely staggered, and each of the spray columns is used for a second fluid to pass through, and a vortex generator is arranged in the spray columns to make all the spray columns The second fluid becomes a vortex spray column, and after the second fluid passes through the spray column, the second fluid will impact a first surface of the next set of array spray column heat exchangers to form an impact spray column , and flow into the spray column of the next group of the array spray column heat exchanger, so as to increase the heat exchange area and convective heat transfer coefficient between the first fluid and the second fluid. The heat exchange module according to claim 2, wherein the vortex generator is any one or a combination of a swirl plate, a vortex fin, and a vortex guide groove. The heat exchange module according to claim 3, wherein the spray columns in each row are arranged alternately with the spray columns in adjacent rows. The heat exchange module according to any one of claim 2 to claim 4, wherein one side of the shell has a plurality of channels, and the channels communicate with each other alternately, and each of the channels is respectively located in the adjacent Between the two spray posts, the distance is between 0.1 times and 0.5 times the diameter of the channel.

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