阅读说明：本技术 一种多层热转换器 (Multilayer heat converter ) 是由 王玉复 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种多层热转换器。现有热转换器上流体通道均为光滑面,热交换面积小,流体通道中流体流速过快；同时,现有热转换器多为单层结构,以上两点使得现有热转换器的热交换效率低下。本发明设置有多个蓄热层,且多个蓄热层之间设置有层间联通通道,流体通道采用不规则形状。本发明增大了流体通道的内腔表面积,延缓了流体通道中流体的流动速度,延长了流体通道中流体的停留时间,提高了整个热转换器的热交换效率。(The invention discloses a multilayer heat converter. Fluid channels on the existing heat converter are all smooth surfaces, the heat exchange area is small, and the flow velocity of fluid in the fluid channels is too high; meanwhile, most of the existing thermal converters are of single-layer structures, and the heat exchange efficiency of the existing thermal converters is low due to the two points. The invention is provided with a plurality of heat storage layers, interlayer communication channels are arranged among the heat storage layers, and the fluid channel adopts an irregular shape. The invention increases the surface area of the inner cavity of the fluid channel, delays the flow speed of the fluid in the fluid channel, prolongs the retention time of the fluid in the fluid channel and improves the heat exchange efficiency of the whole heat converter.)

1. A multilayer heat converter, characterized by: the heat-accumulating type heat-accumulating device comprises a plurality of heat-accumulating layers (1) which are coaxially arranged, heat-accumulating fins (2) are arranged on the inner surfaces and the outer surfaces of the heat-accumulating layers (1), and fluid channels (3) are axially arranged on the side walls of the heat-accumulating layers (1); the cross section of the fluid channel (3) is irregular; the heat storage layers (1) are fixedly connected through interlayer connecting pieces (4), interlayer communicating channels (5) are arranged in the interlayer connecting pieces (4), and the heat storage layers (1) are mutually communicated through the interlayer communicating channels (5).

2. A multilayer heat converter according to claim 1, wherein: the cross section of the fluid channel (3) is formed by connecting a plurality of V-shaped channels in series.

3. A multilayer heat converter according to claim 1, wherein: the cross section of the fluid channel (3) is formed by alternately connecting a plurality of L-shaped channels and inverted L-shaped channels in series.

4. A multilayer heat converter according to claim 1, wherein: the cross section of the fluid channel (3) is in a central radial shape and is formed by a plurality of triangular notches arranged on a circle.

Technical Field

The invention belongs to the technical field of heat exchange, and particularly relates to a multilayer heat converter.

Background

A heat exchanger is a device that transfers the heat of one fluid to another fluid. Fluid channels on the existing heat converter are all smooth surfaces, the heat exchange area is small, and the flow velocity of fluid in the fluid channels is too high; meanwhile, most of the existing thermal converters are of single-layer structures, and the two points cause low heat exchange efficiency of the existing thermal converters, so that resource waste is caused. Therefore, it is very desirable to improve the heat exchange efficiency of the conventional heat converter.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the multilayer heat converter which has higher heat exchange efficiency and improves the effective utilization rate of resources.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a multilayer heat converter comprises a plurality of heat storage layers which are coaxially arranged, wherein heat storage fins are arranged on the inner surfaces and the outer surfaces of the heat storage layers, and fluid channels are axially arranged on the side walls of the heat storage layers; the cross section of the fluid channel is irregular; the heat storage layers are fixedly connected through interlayer connecting pieces, interlayer communicating channels are arranged in the interlayer connecting pieces, and the heat storage layers are communicated with one another through the interlayer communicating channels;

specifically, the cross section of the fluid channel is formed by connecting a plurality of V-shaped channels in series;

specifically, the cross section of the fluid channel is formed by alternately connecting a plurality of L-shaped channels and inverted L-shaped channels in series;

specifically, the cross section of the fluid channel is in a central radial shape and is formed by arranging a plurality of triangular notches on a circle.

The invention has the beneficial effects that:

1) the heat exchanger is provided with the heat storage layers, and the interlayer communication channels are arranged among the heat storage layers, so that the physical length of the fluid channel is increased, the turn-back times of the fluid in the fluid channel are increased, the heat exchange efficiency of the heat converter is improved, and the resource utilization rate is improved;

2) the fluid channel adopts an irregular shape, the surface area of the inner cavity of the fluid channel is increased, the flow speed of fluid in the fluid channel is delayed, and the retention time of the fluid in the fluid channel is prolonged, so that the heat exchange efficiency of the whole heat converter is improved.

Drawings

FIG. 1 is a schematic diagram of a circular three-layer heat converter (V-type);

FIG. 2 is a schematic perspective view of a circular three-layer heat exchanger (V-shaped);

FIG. 3 is a schematic diagram of a cylindrical three-layer heat converter (L-shaped);

FIG. 4 is a schematic view of a central radial fluid passage shape;

FIG. 5 is a schematic diagram of the engine exhaust heat exchange operation;

in the figure, 1-heat storage layer, 2-heat storage fins, 3-fluid channel, 4-interlayer connecting piece and 5-interlayer communicating channel.

Detailed Description

The present invention will be described in detail with reference to specific embodiments.

1) Example 1:

as shown in fig. 1, a schematic structural diagram of a circular three-layer heat converter (V-type) and a schematic structural diagram of a circular three-layer heat converter (V-type) in fig. 2, the present invention includes 3 coaxially disposed circular heat storage layers 1, and circular-arc heat storage fins 2 are disposed on inner and outer surfaces of the heat storage layers 1 along the circumference, so as to increase the heat storage area of the heat converter; the side wall of the heat storage layer 1 is axially provided with a fluid channel 3, the cross section of the fluid channel 3 is formed by connecting a plurality of V-shaped channels in series, the track is arc-shaped, the V-shaped fluid channel increases the surface area of the inner cavity of the fluid channel, the flow speed of the fluid in the fluid channel is delayed, and the retention time of the fluid in the fluid channel is prolonged; the 3 heat storage layers 1 are fixedly connected through interlayer connecting pieces 4, and the interlayer connecting pieces 4 are arranged in a circumferential array by taking the central axis of the heat converter as the center;

an interlayer communication channel 5 is arranged in the interlayer connecting piece 4, the heat storage layers 1 are communicated with each other through the interlayer communication channel 5, the physical length of the fluid channel is increased, and the turn-back times of the fluid in the fluid channel are increased;

2) example 2:

as shown in the structural schematic diagram of a cylindrical three-layer heat converter (L-shaped) in fig. 3, the present invention includes 3 rectangular heat storage layers 1, and arc-shaped heat storage fins 2 are circumferentially arranged on the inner and outer surfaces of the heat storage layers 1, so as to increase the heat storage area of the heat converter; the side wall of the heat storage layer 1 is axially provided with a fluid channel 3, the cross section of the fluid channel 3 is formed by alternately connecting a plurality of L-shaped fluid channels and inverted L-shaped fluid channels in series, the L-shaped fluid channel increases the surface area of an inner cavity of the fluid channel, the flow speed of fluid in the fluid channel is delayed, and the retention time of the fluid in the fluid channel is prolonged; the 3 heat storage layers 1 are fixedly connected through interlayer connecting pieces 4, and the interlayer connecting pieces 4 are arranged on four surfaces of the heat converter; an interlayer communication channel 5 is arranged in the interlayer connecting piece 4, the heat storage layers 1 are communicated with each other through the interlayer communication channel 5, the physical length of the fluid channel is increased, and the turn-back times of the fluid in the fluid channel are increased;

3) example 3:

as shown in the shape schematic diagram of the radial fluid channel in the center of fig. 4, the cross-sectional shape of the fluid channel 3 is radial in the center and is formed by a plurality of triangular notches arranged on a circle; in this embodiment, the overall structure of the heat converter may adopt the circular structure in embodiment 1 or the columnar structure in embodiment 2, and the number of heat storage layers may be calculated according to actual needs.

The shape of the fluid passage, the overall structure of the heat exchanger, and the number of heat storage layers are not limited to those shown in the embodiments, and any simple change in shape and increase in the number of layers are within the scope of the present invention.

Taking the heat exchange process of the engine as an example, the working principle of the invention is explained as follows:

as shown in the working principle diagram of the heat exchange of the exhaust gas of the engine in fig. 5, the multilayer heat converter is arranged in the exhaust pipe of the engine, and the area a in the diagram is the passing area of the high-temperature exhaust gas discharged by the engine; the heat of the tail gas of the engine is conducted to the multilayer heat converter through the heat storage fins on the heat storage layer; fluid flows in from a heat storage layer on the multilayer heat converter, flows through the fluid channels of the heat storage layer, and then flows into the adjacent heat storage layer through the interlayer communication channel, and heat accumulated on the multilayer heat converter is transferred to the fluid through heat exchange in the flowing process of the fluid.

The fluid channel is irregular in shape and provided with the plurality of heat storage layers, and the interlayer communication channels are arranged among the plurality of heat storage layers, so that the heat exchange area is increased, the retention time of fluid in the fluid channel is prolonged, and the heat exchange efficiency of the whole heat converter is improved.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention is not limited to the examples, and any equivalent changes to the technical solution of the invention by a person skilled in the art after reading the description of the invention are covered by the claims of the invention.