WO2012003635A1 - Hollow blade heat-exchange fan - Google Patents

Abstract

A hollow blade heat-exchange fan includes an outer-rotor motor (1), a heat exchange rotor (2) consisting of a body (21) and blades (22), shaft seals (3), a housing (4) and gas output channels (5). The body (21) has a barrel-shaped structure, the inner cavity of which is axially divided into a plurality of ring regions (A, B, C) by partitions (214, 215). Each region is in communication with each other to form a bended gas flowing channel (I1). The blades (22) for heat exchange between a cold gas and a hot gas are hollow elements which radially traverse the plurality of ring regions (A, B, C) of the body (21) so that heat exchange can take place between the gas inside the blades (22) and the gas outside the blades (22). The blade (22) in the outermost region is designed to be a relatively wide tortuous blade in order to function as an axial flow blade and facilitate installation. Water permeable micro-holes (210) are provided on the partitions (214, 215). The hollow blades (22) and the partitions (214, 215) are both made of metal material with good thermal conduction.

Description

[Name of invention established by ISA in accordance with Rule 37.2] Hollow blade heat exchange fan Technical field

 The invention relates to a gas heat exchange device, in particular to a hollow fan full heat exchange new fan.

Background technique

A known heat recovery type fan or air preheater (shown in FIG. 1A) is usually composed of two fans 10 and a heat exchange core 20, etc., and the heat recovery type fan or air preheater performs The method of heat exchange is to use a fan to drive the gas flow, and the heat exchange core 20 is used for heat exchange. The heat exchange core of this heat exchange type can only be made of a non-metallic material having good water permeability and poor thermal conductivity, and thus heat exchange efficiency is low. Another well-known rotary gas heat exchange unit (shown in FIG. 1B) is composed of two wind turbines 10' and one heat exchange turntable 20'. The blower 10' is used to drive gas flow, and the heat exchange turntable 20' is continuous. Slowly rotating, the hot gas channel releases heat while the hot gas path absorbs heat. Since both heat exchange devices require at least three devices, the structure of the device is complicated. In view of the deficiencies of the conventional device, the inventors have applied for a gas heat exchange method and device (as shown in FIG. 1C and FIG. 1D) of the Chinese patent (patent number: 00119398.8), wherein the device is composed of a heat exchange component 1'A, The rotating shaft 2A, the shaft seal 3A, the gas output passage 4A, and the outer casing 5A are configured. The rotating shaft 2A is installed on the center line of the heat exchange unit 1'A, the heat exchange unit 1'A is rotatable around the rotating shaft 2A, and the gas output passage 4A is connected to the heat exchange. A shaft seal 3A is connected between the gas output passage 4A, the outer casing 5A, and the heat exchange unit 1'A at both ends of the assembly 1'A. The heat exchange component 1'A is a heat exchange rotor 11'A, the heat exchange rotor 11'A is mounted in the outer casing 5A, and the heat exchange rotor 11'A is composed of the outer cylinder 111'A, the blade 112'A, and the inner The inner cylinder 113'A is assembled in the outer cylinder 111'A, and a cavity I115'A is formed between the outer cylinder 111'A and the outer casing 5A. The outer cylinder 111'A and the inner cylinder 113'A are in the same rotation. The axis is rotatable about the axis of revolution. One end of the inner cylinder 113'A is sealed and the other end is opened. The outer cylinder 111'A is open at both ends; the vane 112'A is symmetrically disposed between the outer cylinder 111'A and the inner cylinder 113'A, and the radial ends of the vane 112'A are respectively connected to the outer cylinder 111'A and the inner cylinder 113' A, the blade 112'A is a hollow member, and the cavity 1121'A in the blade 112'A and the space 119 between the inner cylinder 113'A, the outer cylinder 111'A and the blade 112'A form cold and hot gases. The passage, the cavity 1121'A in the blade 112'A communicates with the inner cylinder 113'A inner cavity 1131'A, the cavity I115'A, forming a cold gas passage, and the vane 112'A surrounds the inner cylinder 113'A in the horizontal direction. A blade group is formed on the cross section, and the plurality of blade groups are arranged in parallel in the axial direction. Although the invention overcomes the deficiencies of the conventional products, there are still defects in that the heat exchange efficiency is not sufficiently high.

Summary of the invention

The object of the present invention is to provide a hollow vane full heat exchange new fan with high heat exchange efficiency.

To achieve the above object, the technical solution of the present invention is:

A hollow blade full heat exchange new fan, which is mainly composed of an outer rotor motor, a heat exchange rotor, a shaft seal, a casing and a gas output passage; the outer rotor motor is fixed in the middle of the outer casing, and the heat exchange rotor is sleeved on the outer rotor The motor is located in the outer casing, the gas output passage is connected to both ends of the heat exchange rotor, and the gas output passage and the outer casing and the heat exchange rotor are connected with a shaft seal; the heat exchange rotor is composed of a body and a blade. The body is an annular barrel-shaped structure, and the inner cavity is divided into a plurality of annular regions by a plurality of partitions in the axial direction, and the respective regions are electrically connected to each other to form a plurality of curved airflow passages. The inlet is the port of the outer ring cavity; the blade as the partitioning and driving heat exchange cold and hot gas is a hollow member, and the hollow blade passes through a plurality of annular regions of the barrel body in the radial direction, and both ends of the blade They are respectively fixed on the inner ring wall and the outer ring wall of the body and the middle portion is connected with the partition plates. The inner cavity of the blade forms an air flow passage with the inner ring cavity of the body, and the inlet of the channel is the port of the inner ring cavity.

The blade has a plurality of blades, and the plurality of blades respectively penetrate the body in a radial direction in a radial plane to form a blade group, and the plurality of blade groups are arranged in parallel along the axis.

The blade penetrating the body is divided into a plurality of hot and cold gas exchange regions by a plurality of annular regions on the body, and the blade segments located at the outermost region are twisted.

The plurality of annular regions of the body are divided by annular partitions extending axially from the inner end walls, respectively, and the ends of the partitions have a gap with the opposite inner end walls to form an air flow passage.

The plurality of annular regions of the body are three.

Micropores for permeable water are formed on the outer ring wall and the surfaces of the plurality of partition plates.

After adopting the above solution, the heat exchange rotor of the present invention is composed of a body and a blade, and the body is an annular barrel structure, and the inner cavity is divided into a plurality of annular regions in the axial direction, and the respective regions are electrically connected to each other to form. A plurality of curved air flow passages; the blades for heat exchange of cold and hot gases are hollow members, and the hollow blades pass through a plurality of annular regions of the barrel body in a radial direction. Since the blade passes through a plurality of annular regions of the barrel body, the gas in the blade and the gas outside the blade can perform multiple blade heat transfer and achieve reverse flow heat transfer, and the present invention also designs the blade located in the outermost region to be compared. The wide twisted shape not only functions as an axial flow vane but also facilitates blade mounting. Since the condensed water in the hot air is transferred to the cold air passage by the centrifugal force through the permeable pores, the hollow vanes and the separator can be made of a metal material having good heat conductivity. Therefore, the heat transfer efficiency of the present invention is high.

The invention will now be further described with reference to the drawings and specific embodiments.

DRAWINGS

1A and 1B are schematic views of two conventional gas heat exchange units;

1C is a schematic structural view of a conventional gas heat exchange device;

Figure 1D is a cross-sectional view taken along line F-F of Figure 1C;

Figure 2 is a schematic view of the structure of the present invention;

Figure 3 is a perspective view of the heat exchange rotor of the present invention;

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 5 is an exploded perspective view of the heat exchange rotor body of the present invention;

Figure 6 is a perspective view of the heat exchange rotor body of the present invention after being sleeved;

Figure 7 is a cross-sectional view taken along line B-B of Figure 6;

Figure 8 is a schematic view showing the installation of the shaft seal of the present invention;

9A and 9B are three different views of the blade of the present invention.

detailed description

As shown in FIG. 2, the present invention is a hollow vane full heat exchange new fan, which is mainly composed of an outer rotor motor 1, a heat exchange rotor 2, a shaft seal 3, a casing 4, a gas output passage 5, and a filter screen 6.

The outer rotor motor 1 is fixedly sleeved in the middle of the outer casing 4, and the heat exchange rotor 2 is sleeved on the outer rotor motor 1, and is fixed to the outer casing of the outer rotor motor 1 through the bracket 11 (shown in FIG. 3). An outer rotor motor 1 that is coupled with a heat exchange rotor 2 is mounted in the outer casing 4. The gas output channel 5 is connected to both ends of the heat exchange rotor 2, and the gas output channel 5 and the outer casing 4 and the heat exchange rotor 2 are connected with a shaft seal 3, and the shaft seal 3 is a non-contact type and a comb type (laby type) ) Shaft seal (as shown in Figure 8).

As shown in FIGS. 3 and 4, the heat exchange rotor 2 is composed of a body 21 and blades 22. The body 21 is an annular barrel-shaped structure, and the inner cavity is divided into three annular regions A, B and C by the partitions 214 and 215 disposed therein, and between the three regions A, B and C. The surfaces of the outer ring wall 212 and the partition plates 214 and 215 are provided with micropores 210 for permeable to water, and a plurality of curved airflow passages I1 (shown in FIG. 1) are formed. The inlet E1 of I1 is an end wall of the body 21 which is opened to become a gas inlet.

As shown in FIG. 2 to FIG. 4, the blade 22 as a partitioning and driving heat exchange cold and hot gas is a hollow member, and the hollow blade 22 sequentially passes through the outer ring wall 212 on the barrel body 21 in the radial direction, The partitions 214, 215, the inner ring wall 211 (ie, through the three annular regions A, B, C), the two ends of the blade 22 are respectively fixed on the inner ring wall 211 and the outer ring wall 212 of the body 21 and the middle portion thereof Connected to the partitions 214, 215, the inner cavity of the vane 22 forms an air flow passage I2 with the inner annular chamber 213 of the body 21, and the inlet E2 of the passage I2 is a port of the inner ring. The blade 22 has a plurality of blades 22 that penetrate the body 21 in a radial direction on a radial plane to form a blade group, and a plurality of blade 22 groups are arranged in parallel along the axis. The specific number of blades, blade size and number of blade groups can be determined according to the bidirectional flow impeller blade and blade parameter adjustment relationship.

As shown in FIG. 9A, the blade 22 penetrating the body 21 is divided into three cold and hot gas exchange regions by the three annular regions A, B, and C on the body 21, and the leaf segment 221 located at the outermost region A region. In the form of a twist, the long axis of the section forms a certain angle α with the direction of rotation of the rotor. For the purpose of assembly, the blade 22 has an angle of 0° and no distortion in the B and C regions, and is mainly used for heat exchange. The blade segment 221 of the blade in the outermost region A region may also not be twisted, and the angle α of the rotor rotation direction is 0°; the blade mainly used for heat exchange and flow guiding has a long axis and a rotor rotation direction angle α of 90°. (as shown in Figure 9B).

As shown in FIG. 5, FIG. 6, and FIG. 7, at the time of manufacture, the three annular regions A, B, and C of the body 21 are formed by arranging two drums 21A and 21B having different radial sizes. The two drums 21A and 21B are each provided with a ring of annular partitions 21A1 and 21B1 extending axially from the inner end wall, and the annular partition 21A1 and the annular partition 21B1 have different radial dimensions in the drums 21A and 21B. When the sockets are mutually sleeved, the insertion of the misalignment is formed, the end of the partition 21A1 is higher than the end of the outer wall of the drum 21A, and the end of the partition 21B1 is lower than the end of the outer wall of the drum 21B, so that the two drums 21A and 21B are mutually connected. When nested, the end of the partition 21B1 has a gap with the inner end wall of the other drum 21A to form an air flow passage. For a body having more annular regions, it can be manufactured according to the principle that a plurality of annular regions of the body are divided by annular partitions extending axially from the inner end walls respectively.

The main point of the invention is that the heat exchange rotor is divided into a plurality of annular regions from the body cavity in the axial direction, and the blades pass through a plurality of annular regions of the barrel body to form a bending multiple blade heat exchange passage to realize the reverse stroke. Heat exchange.

Claims (6)

1. A hollow blade full heat exchange new fan, characterized in that: it is mainly composed of an outer rotor motor, a heat exchange rotor, a shaft seal, a casing and a gas output passage; the outer rotor motor is fixed in the middle of the outer casing, and is replaced The heat rotor is sleeved on the outer rotor motor and located in the outer casing body, the gas output passage is connected to both ends of the heat exchange rotor, and the gas output passage and the outer casing and the heat exchange rotor are connected with a shaft seal; The body is composed of a body and a blade. The body is an annular barrel-shaped structure, and the inner cavity is divided into a plurality of annular regions by a plurality of partitions in the axial direction, and the respective regions are electrically connected to each other to form a plurality of curved shapes. An air flow passage, the inlet of the passage being a port of the outer ring chamber; the blade as a partitioning and driving heat exchange cold and hot gas is a hollow member, and the hollow blade passes through a plurality of rings of the barrel body in a radial direction In the region, the two ends of the blade are respectively fixed on the inner ring wall and the outer ring wall of the body and the middle portion is connected with each partition plate, and the inner cavity of the blade forms an air flow passage with the inner ring cavity of the body, and the passage of the channel Port inner cavity.

2. The hollow-blade full heat exchange new fan according to claim 1, wherein the plurality of blades have a plurality of blades, and the plurality of blades respectively penetrate the body in a radial direction to form a blade group. A plurality of blade groups are arranged in parallel along the axis.

3. The hollow blade full heat exchange new fan according to claim 1, wherein the blade penetrating the body is divided into a plurality of hot and cold gas exchange regions by a plurality of annular regions on the body, and is located at the outermost position. The leaf segments of the region are twisted.

4. The hollow-blade full heat exchange new fan according to claim 1, wherein the plurality of annular regions of the body are divided by annular partitions extending axially from the inner end walls, respectively. The ends of each of the baffles have a gap with their opposite inner end walls to form an air flow passage.

5. The hollow blade full heat exchange new fan according to claim 1, wherein the body has three annular regions.

6. The hollow-blade full heat exchange new fan according to claim 1, wherein the outer ring wall and the plurality of partitions are provided with micropores for permeable to water.

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