KR20190132782A - Side channel type regenerative blower - Google Patents

Abstract

The present invention relates to a side channel type regenerative blower. The side channel type regenerative blower comprises: an external blade; and an impeller including a circular ring-type internal blade. Accordingly, leakage of gas or fuels introduced through the regenerative blower can be prevented, and performance of the regenerative blower can be increased.

Description

Side channel type reproduction blower {SIDE CHANNEL TYPE REGENERATIVE BLOWER}

The present application relates to a side channel type regenerative blower, and more particularly, to an impeller including an outer blade and an inner blade having a circular ring structure, thereby preventing leakage of gas and / or fuel introduced through the regenerative blower, A side channel type reproduction blower capable of improving the performance of a blower.

In general, regenerative blowers are mainly used for delivering gases at relatively low flow rates and high pressures, such as industrial high pressure blowers (ring blowers). In recent years, regenerative blowers are also used as air superchargers and hydrogen recirculators in fuel cell systems. The scope of use is expanding.

There are two types of reproduction blowers, an open channel type and a side channel type. Among them, a structure of a conventional side channel type reproduction blower is shown in FIG. 1 and included in a conventional side channel type reproduction blower. The structure of the impeller being shown is shown in FIG. 2.

As shown in FIGS. 1 and 2, the impeller 140 has flow path grooves 121 and 131 of the first and second casings 120 and 130 along the circumferential direction on both sides of the outer body 142. In addition, the flow grooves 143 forming the pressure channels 137 and 138 are formed, and each of the flow grooves 143 includes an outer blade having a plurality of vanes 144 at predetermined intervals.

However, as described above, since the conventional regeneration blower includes the impeller 140 having the above structure, the gas and / or fuel flowing into the suction port may be re-introduced into the suction port so that the gas and / or the fuel may leak. Due to the large transfer loss, there is a problem that the product quality is also reduced.

Therefore, in order to overcome this problem, it is urgent to research and develop a side channel type regenerative blower that can prevent the leakage of gas and / or fuel.

Patent Document 1: Republic of Korea Patent Publication No. 2011-0006413

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a side channel type regenerative blower capable of preventing leakage of gas and / or fuel and improving performance by including impellers composed of outer and inner blades. There is this.

The present invention for achieving the above object, the first casing and the second casing coupled to each other to form a receiving space therein, and installed in the receiving space between the first casing and the second casing is rotated by a motor It includes an impeller, the first casing and the second casing is formed on the inner side facing the impeller flow path grooves along the circumferential direction, respectively, one of the coupling of the first casing and the second casing at both ends of the flow path groove A suction inlet forming portion and an outlet forming portion are formed in the groove shape forming the inlet and outlet, the impeller has a flow groove is formed on both sides along the circumferential direction to form a pressure channel along with the flow path groove, the inside of the flow groove An inclined angle of 50 degrees to 70 degrees and an outer blade provided with a plurality of vanes at predetermined intervals, and an inner blade having a circular ring structure; Square provides a side-channel blower reproduction defined by the angle of the vanes relative to the forming surface of the impeller.

Specifically, the plurality of vanes formed on the outer blade is formed with an inclination angle of 50 degrees to 70 degrees from the ground of the impeller. The vane generates a transfer pressure, and serves to transfer the sucked gas and / or fuel to the discharge port. Specifically, the inclination angle of the vane may be 55 degrees to 65 degrees or 58 degrees to 63 degrees.

Specifically, the outer blade may include 30 or more vanes, and specifically, the outer blade may include 30 to 50, 35 to 45, or 38 or 42 vanes.

Referring to FIG. 3, the inner blade 146a is specifically designed to block gas and / or fuel flowing into the inlet from being re-introduced into the inlet, and thus has a circular ring structure. It is formed along the inner circumferential surface of the outer blade 145 to prevent leakage.

The side channel type regeneration blower of the present invention further includes a silencer coupled to one side of the first casing and the second casing, wherein the silencer communicates the inlet and outlet with the inlet and outlet pipes connected to the outside, respectively. It is preferred that the inlet and outlet connectors are provided.

Preferably, the suction port and the discharge port are provided at intermediate portions of the pressure feeding channel on the first casing side and the pressure feeding channel on the second casing side.

The inlet and outlet are preferably formed so that the cross-sectional area is equal to or less than 10% of the sum of the cross-sectional areas of the pressure feeding channel on the first casing side and the pressure feeding channel on the second casing side.

Referring to FIG. 4, the inner blades 146a and 146b include a first inner blade 146a having a circular ring structure and a second inner blade 146b having a plurality of partition walls, and the second inner blade ( 146b is formed between the outer blade 145 and the first inner blade 146a.

The partition wall extends upwardly from the ground of the impeller, and the angle between the ground of the impeller and the partition wall is in the range of 80 to 100 degrees, in the range of about 83 to 97 degrees, in the range of about 85 to 95 degrees, or about It may be in the range of 87 degrees to 92 degrees or approximately vertical. In particular, when the angle formed by the partition wall is vertical, leakage of gas and / or fuel can be effectively prevented and noise can be attenuated.

The second inner blade may include 20 or more partitions, and specifically, may be 20 to 35, 23 to 32, or 25 to 30.

The present invention also provides a fuel cell comprising a side channel type regenerative blower.

The fuel cell may be a proton exchange membrane cell (PEM).

The structure and components of the fuel cell and the proton exchange membrane cell are known to those skilled in the art to which the present invention pertains, and a detailed description thereof will be omitted below.

The structures and components of the fuel cell and the proton exchange membrane cell are well known to those skilled in the art to which the present invention pertains.

As described above, the side channel type regenerative blower of the present invention includes an impeller including an outer blade and an inner blade having a circular ring structure, thereby preventing the leakage of gas and / or fuel introduced through the regenerative blower, thereby improving the performance of the regenerative blower. Can improve.

1 is an exploded perspective view of a conventional side channel type regeneration blower.
Figure 2 is a perspective view showing the structure of a conventional impeller.
3 and 4 are perspective views of the impeller.
5 is a perspective view showing an embodiment of a side channel type reproduction blower according to the present invention.
6 is an exploded perspective view of the present invention blower shown in FIG.
7 is a cross-sectional view of the present invention blower shown in FIG.
8 is a view showing the efficiency of the present invention and the conventional side channel type regeneration blower for the volume flow rate (Volume Flow Rate).

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention. The accompanying drawings show exemplary embodiments of the invention, which are provided to assist in understanding the invention. In the accompanying drawings, the scope of the present invention is not limited by the thickness, size, ratio, etc. shown in the drawings.

5 is a perspective view showing an embodiment of a side channel type regeneration blower according to the present invention, FIG. 6 is an exploded perspective view of the present invention regeneration blower shown in FIG. 5, and FIG. 7 is a regeneration of the present invention shown in FIG. It is sectional drawing of blower.

As shown in FIGS. 5 to 7, the regeneration blower of the present invention is provided with a first casing 120 and a second casing 130, each of which is formed on the upper side of the silencer 110, and the first casing 120. ) And the impeller 140 is rotatably installed inside the second casing 130. In addition, a motor 150 for rotating the impeller 140 is installed on the top of the silencer 110.

The silencer 110 is provided with an inlet connector 113 and a discharge connector 114 in the upper surface portion, the inlet pipe 111 and the discharge pipe 112 is connected to the side surface. Although not shown, the two passages connecting the inlet connector 113 and the inlet pipe 111, the outlet connector 114, and the outlet pipe 112 are provided separately from each other in the silencer 110. At least one side of the noise means is provided.

The first casing 120 and the second casing 130 are coupled to each other to surround both sides of the impeller 140 to form pumping channels 137 and 138 through which gas is transferred. The flow path grooves 121 and 131 having a predetermined length are formed along the circumferential direction. The flow path grooves 121 and 131 may be formed in a shape having a curved portion having various shapes that are generally applied to a casing of a regenerative blower, including a semi-circular cross-sectional shape. Semi-circular suction inlet forming portions forming one inlet 127 and an outlet 128 at the bottom of the first and second casings 120 and 130 when the first and second casings 120 and 131 are coupled to each other. 122 and 132 and outlet openings 123 and 133 are provided. The inlet 127 and the outlet 128 are in communication with the inlet connector 113 and the outlet connector 114 of the silencer 110, respectively.

The impeller 140 includes a circular inner body 141 connected to the output shaft of the motor 150 and an annular outer body 142 provided on the outer circumference of the inner body 141. The inner body 141 and the outer body 142 may be formed as a separate member or may be integrally formed.

On both sides of the outer body 142 of the impeller 140, along the circumferential direction, pressure channels 137 and 138 are formed along the flow path grooves 121 and 131 of the first and second casings 120 and 130, respectively. Flow grooves 143 are formed, and the plurality of vanes 144 are provided at predetermined intervals in each of the flow grooves 143. The flow groove 143 may also be formed in a shape having a curved portion of various forms, including a semi-circular cross-sectional shape, typically applied to the impeller of the regeneration blower.

On the other hand, each of the inlet forming portion 122, 132 and the outlet forming portion 123, 133 of the first casing 120 and the second casing 130 is the same as each of the pressure channel (137, 138) formed on both sides It is preferable to be formed to have a cross-sectional area. That is, it is preferable that the cross-sectional areas of the suction port 127 and the discharge port 128 are formed to be equal to the sum of the cross-sectional areas of the two pressure feed channels 137 and 138.

In addition, the inlet port 127 and the outlet port 128 are preferably formed in the middle portion of the both side pressure channel (137, 138) so that the flow rate and the transfer force of both side pressure channel (137, 138) is equal.

The regenerative blower of the present invention configured as described above, when the impeller 140 is rotated by the motor 150, the vane 144 while sucking the gas into the pumping channels 137 and 138 through the suction port 127. By applying the transfer pressure by the discharge port 128 is discharged to the outside. The inlet 127 is a gas inlet from the outside through the inlet pipe 111 of the silencer 110, the outlet port 128 is a gas pressure to the outside through the discharge pipe 112 of the silencer 110 is made. .

The regeneration blower of the present invention as described above has one suction port 127 and one discharge port for the two pressure channels 137 and 138 formed between the impeller 140 and the first casing 120 and the second casing 130. Since it is made of a structure having a 128, it is not necessary to provide the entry and exit block on both sides of the casing as in the prior art, the suction port forming portion of the first groove 120 and the second casing 130 in the form of a simple groove ( Only the inlets 127 and the outlets 128 may be formed by forming only the 122 and 132 and the outlet openings 123 and 133. Therefore, the structure of the blower is simplified and the assembling process is simplified, thereby improving productivity and reducing manufacturing costs.

Furthermore, since the silencer 110 has only one inlet connector 113 and one discharge connector 114, the structure of the silencer 110 is simplified and the coupling process between the transfer unit and the silencer is simplified, further improving productivity and cost efficiency. It has the advantage of being.

In addition, since the number of coupling parts in which gas leakage occurs is reduced, the transfer loss is reduced, there is an advantage that the performance of the blower is also improved.

Example 1.

A side channel type regeneration blower including the impeller structure of FIG. 3 was prepared.

Example 2.

A side channel type regeneration blower including the impeller structure of FIG. 4 was prepared.

Comparative Example 1.

A side channel type regeneration blower including the impeller structure of FIG. 2 was prepared.

Experimental Example

The leakage prevention performance of the regeneration blower of the Example and the comparative example was evaluated, and the result is shown in following Table 1 and FIG.

Volumetric Flow Rate (LPM) Comparative example (efficiency,%) Example 1 (efficiency,%) 300 43 43 400 52 55 500 53 59 600 38 43 680 15 22

Referring to Table 1 and Figure 8, unlike Example 1, since the impeller further includes an inner blade of a circular ring structure, the efficiency of preventing the leakage of gas and / or fuel flowing through the regeneration blower is more It confirmed that it is excellent.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

110: silencer
111: inlet pipe, 112: outlet pipe
113: inlet connector, 114: outlet connector
120: first casing
121, 131: Eurohome
122, 132: suction port forming unit
123, 133: outlet formation part
127: inlet, 128: outlet
130: second casing
137, 138: pressure feeding channel
140: impeller
141, 142: inner body, outer body
143: flow groove
144: vane
145: outer blade
146a, 146b: first and second inner blades
150: motor

Claims (7)

A first casing and a second casing coupled to each other to form an accommodation space therein, and an impeller installed in the accommodation space between the first casing and the second casing and rotated by a motor,
Each of the first casing and the second casing has a flow path groove formed in a circumferential direction on an inner surface facing the impeller, and each of the flow path grooves has one inlet port and an outlet port when the first casing and the second casing are coupled to each other. Is provided with a suction port forming portion and the outlet forming portion of the groove,
The impeller has a flow groove forming a pressure channel along with the flow path groove in the circumferential direction on both sides, the inclination angle is 50 to 70 degrees inside the flow groove is provided with a plurality of vanes at predetermined intervals A blade and an inner blade having a circular ring structure,
The inclination angle is a side channel type regeneration blower defined by the angle formed by the vane with respect to the ground of the impeller. The method of claim 1,
And a silencer coupled to one side of the first casing and the second casing, wherein the silencer is provided with an inlet connector and an outlet connector for communicating the inlet and outlet ports with the inlet and outlet tubes respectively connected to the outside. Side channel type playback blower. The method of claim 1,
And the suction port and the discharge port are provided at an intermediate portion of the pressure feeding channel on the first casing side and the pressure feeding channel on the second casing side. The method of claim 1,
And said inlet and outlet are formed so that the cross-sectional area is equal to or less than 10% of the sum of the cross-sectional areas of the pressure feeding channel on the first casing side and the pressure feeding channel on the second casing side. The method of claim 1,
The inner blade includes a first inner blade having a circular ring structure and a second inner blade provided with a plurality of partition walls, wherein the second inner blade is formed between the outer blade and the first inner blade. Channel-type playback blower. The method of claim 5,
The partition wall extends upward from the ground of the impeller, and the angle formed by the ground of the impeller and the partition wall is characterized in that the range of 80 to 100 degrees range side regeneration blower. A fuel cell comprising the side channel regenerative blower according to any one of claims 1 to 6.

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