Air supply demister

Abstract

To provide an air supply demister with further improved performance.SOLUTION: An air supply demister comprises a duct forming a flow path through which supply air circulates upward from below, and a demister body provided above the duct. The demister body has: a plurality of gutter parts that has a receiving surface recessed downward and extending obliquely, and is arranged side by side at intervals; and a plurality of return parts that is provided above the gutter parts, has a return surface upwardly recessed, and is arranged side by side at intervals. The return surface of the return part straddles across adjacent receiving surfaces in an extension direction of the return surface when viewed in a vertical direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to an intake demister.

Background Art

[0002] In a high-output engine system, a turbocharger is used to ensure intake air pressure. An intercooler for cooling the intake air is provided between the engine body and the turbocharger.

[0003] In this intercooler, condensed water is generated as the intake air is cooled. If the condensed water enters the engine body, it may cause damage to the valve due to heat shock. Therefore, for example, a device called a condensate separation device (intake demister) described in Patent Document 1 below has been conventionally used. In this device, punching metal is arranged on the flow path to separate the condensed water.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when punching metal is used as described above, the separated condensed water may be scattered along with the flow of the intake air. In addition, since the punching metal blocks the flow path, it may cause a pressure loss for the intake air. As a result, the performance of the intake demister deteriorates.

[0006] The present disclosure has been made to solve the above problems, and an object thereof is to provide an intake demister with further improved performance.

Means for Solving the Problems

[0007] In order to solve the above problems, the intake air demister according to the present disclosure includes a duct that forms a flow path through which intake air flows from below upward, and a demister main body provided in the duct. The demister main body has a receiving surface that is concave downward and extends obliquely, a plurality of gutter portions arranged side by side with a space therebetween, and a plurality of return portions provided above the gutter portions and having a return surface that is concave upward and arranged side by side with a space therebetween. Each of the return portions, when viewed in the vertical direction, has the return surface straddling the adjacent receiving surfaces in the extending direction of the return surface. and further has a projecting portion that projects from the edge of the gutter portion toward the receiving surface side. The air supply demister according to the present disclosure includes a duct that forms a flow path through which air supply flows from below upward, and a demister main body provided in the duct. The demister main body has a receiving surface that is concave downward and extends obliquely, a plurality of gutter portions arranged side by side with a space therebetween, and a plurality of return portions provided above the gutter portions and having a return surface that is concave upward and arranged side by side with a space therebetween. Each of the return portions straddles the adjacent receiving surfaces in the extending direction of the return surface in a top-down view. Among the gutter portions, it further has a cover portion that covers at least the lower end portion from above. The air supply demister according to the present disclosure includes a duct that forms a flow path through which air supply flows from below upward, and a demister main body provided in the duct. The demister main body has a receiving surface that is concave downward and extends obliquely, a plurality of gutter portions arranged side by side with a space therebetween, and a plurality of return portions provided above the gutter portions and having a return surface that is concave upward and arranged side by side with a space therebetween. Each of the return portions straddles the adjacent receiving surfaces in the extending direction of the return surface in a top-down view. It further has a water-repellent coating layer provided on the receiving surface and the return surface.

Advantages of the Invention

[0008] According to the present disclosure, an intake air demister with further improved performance can be provided.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0010] (Configuration of the intake air demister) Hereinafter, the intake air demister 100 according to an embodiment of the present disclosure will be described with reference to FIGS. 1 and 2. This intake air demister 100 is a device provided on the downstream side of an intercooler that cools the exhaust gas from the engine to a certain temperature when supplying it to the turbocharger. Specifically, as shown in FIG. 1, the intake air demister 100 includes a duct 1, a header 3, and a demister main body 4.

[0011] The duct 1 has a cylindrical shape, and intake air G flows through it from below upward. An intercooler 2 is provided inside the duct 1. The intercooler 2 is, for example, a fin-and-tube type heat exchanger, and performs heat exchange between the refrigerant flowing inside and the intake air G. As a result, the temperature of the intake air G decreases.

[0012] The header 3 is integrally provided above the duct 1. The demister main body 4 is housed inside the header 3. The intake air G containing moisture flowing from the duct 1 is separated into gas and liquid by the demister main body 4. Among these, the intake air G from which the moisture has been removed is discharged to the outside through an exhaust port 32 provided at the upper part of the header 3.

[0013] (Configuration of the demister main body) Next, the configuration of the demister main body 4 will be described with reference to FIGS. 1 and 2. The demister main body 4 has a gutter part 41 and a return part 42.

[0014] As shown in FIG. 1, both the gutter part 41 and the return part 42 are inclined with respect to the horizontal direction. Note that, different from this example, a configuration in which only the gutter part 41 is inclined is also possible.

[0015] Furthermore, as shown in FIG. 2, the gutter part 41 and the return part 42 have an L-shaped cross-sectional shape. The gutter part 41 is recessed downward. The surface facing upward of the gutter part 41 is a receiving surface 41a. A water-repellent coating layer C is provided on this receiving surface 41a. A plurality of such gutter parts 41 are arranged at intervals in the horizontal direction.

[0016] Above the gutter part 41, a plurality of return parts 42 are provided. Each return part 42 is recessed upward. The surface facing downward of the return part 42 is defined as the return surface 42a. On this return surface 42a, similar to the receiving surface 41a, a water-repellent coating layer C is provided. These return parts 42 are arranged at intervals in the horizontal direction, similar to the gutter part 41. In a vertical view, for each return part 42, the return surface 42a extends across the receiving surface 41a of the lower gutter part 41 adjacent in the vertical direction over the entire area in the extending direction of the return surface 42a. That is, when viewed from the vertical direction, at least a part of the return surface 42a and the receiving surface 41a overlap each other. Stated more specifically, the gutter part 41 and the return part 42 are offset from each other in the horizontal direction.

[0017] (Function and Effect) Subsequently, the operation of the above-described intake demister 100 will be described. First, the intake air G is introduced into the duct 1. Then, the intake air G is cooled by the intercooler 2. The cooled intake air G contacts the demister main body 4 in the header 3. At this time, as shown in FIG. 2, among the intake air G, the gas-phase component G1 flows upward from below through the gap between the above-described gutter part 41 and the return part 42.

[0018] On the other hand, the moisture W contained in the intake air G condenses on the return surface 42a of the return part 42. This moisture W flows down the return surface 42a under the action of gravity as shown by the arrow in FIG. 2, and then flows down to the lower gutter part 41. Since the gutter part 41 is inclined with respect to the horizontal direction as described above, the moisture W flows downward along the inclination. Thereafter, the moisture W is discharged to the outside through the discharge port 31 (see FIG. 1) connected to the header 3 to which the gutter part 41 is connected. That is, the lower ends of the plurality of gutter parts 41 are connected to the discharge port 31.

[0019] According to the above configuration, the moisture W contained in the supply air G flowing through the duct 1 condenses and is captured on the return surface 42a of the return portion 42. The captured moisture flows down to the lower gutter portion 41 by gravity. Further, the moisture W flows downward along the inclination of the gutter portion 41 by gravity and is taken out to the outside. Thereby, the possibility that the moisture W scatters from the demister main body 4 and returns into the supply air G can be reduced. Further, since the gutter portion 41 and the return portion 42 are arranged at intervals from each other, the flow of the supply air G is not obstructed. For this reason, the generation of pressure loss in the supply air demister 100 can also be suppressed.

[0020] Furthermore, according to the above configuration, since the return surface 42a is inclined, the condensed moisture W can be made to flow downward in the inclined direction and drip toward the receiving surface 41a. Thereby, the moisture can be evacuated from the flow path more quickly.

[0021] Also, according to the above configuration, the moisture W stored in the gutter portion 41 is discharged to the outside through the discharge port 31 formed in the header 3. Since the moisture can be discharged by the differential pressure between the header internal pressure and the atmospheric pressure, other devices such as a pump become unnecessary, and the manufacturing cost and maintenance cost of the device can be reduced.

[0022] In addition, according to the above configuration, the coating layer C can avoid the retention of the moisture W on the receiving surface 41a and the return surface 42a and cause it to flow down promptly. Thereby, the possibility that the moisture W scatters from the demister main body 4 can be further reduced.

[0023] The embodiments of the present disclosure have been described above. Note that various changes and modifications can be made to the above configuration without departing from the gist of the present disclosure. For example, as a modification, as shown in FIG. 3, it is also possible to adopt a configuration further having a cover portion 5 that covers at least the lower end portion of the gutter portion 41 from above. According to this configuration, since the cover portion 5 is provided, the possibility that the moisture once dropped onto the gutter portion 41 scatters upward again can be reduced.

[0024] Furthermore, as shown in FIG. 4, it is also possible to adopt a configuration in which a pair of projecting portions 6 that project from the edge of the gutter portion 41 toward the receiving surface 41a side are further provided. According to this configuration, since the projecting portions 6 are provided on the gutter portion 41, the possibility that the moisture that has once dripped onto the gutter portion 41 scatters upward again can be further reduced.

[0025] In addition, it is also possible to form the gutter portion 41 into the shapes shown in FIGS. 5 and 6. In the example of FIG. 5, the gutter portion 41 has a bottom surface 41b and a receiving surface 41a that extends obliquely from the edge of the bottom surface 41b. In the example of FIG. 6, the gutter portion 41 has a semi-cylindrical shape. Its inner peripheral surface is the receiving surface 41a'. According to these configurations, compared with the configuration having the L-shaped cross-sectional shape described in the above embodiment, the volume of the gutter portion 41 can be increased. As a result, it becomes possible to capture and discharge a larger amount of moisture.

[0026] Also, although not shown in detail, it is also possible to stack a plurality of gutter portions 41 and return portions 42 in the vertical direction respectively. It is also possible to provide only one layer of the gutter portion 41 and provide two or more return portions 42 above. In any configuration, it is desirable that at least a part of the return portions 42 overlap when viewed from the vertical direction. According to such a configuration, it becomes possible to further expand the processing performance (moisture capture amount) of the demister main body 4.

[0027] <Supplementary Note> The supply air demister 100 described in each embodiment is understood as follows, for example.

[0028] (1) The air supply demister 100 according to the first aspect includes a duct 1 that forms a flow path through which the supply air G flows from below upward, and a demister main body 4 provided above the duct 1. The demister main body 4 has a receiving surface 41a that is recessed downward and extends obliquely, and a plurality of gutter portions 41 arranged in parallel with a space therebetween. Above the gutter portions 41, there are provided a plurality of return portions 42 having a return surface 42a that is recessed upward and arranged in parallel with a space therebetween. In a vertical view, the return surface 42a of each return portion 42 straddles the adjacent receiving surface 41a in the extending direction of the return surface 42a.

[0029] According to the above configuration, the moisture W contained in the supply air G flowing through the duct 1 condenses and is captured on the return surface 42a of the return portion 42. The captured moisture W flows down to the lower gutter portion 41 by gravity. Further, the moisture W flows downward along the inclination of the gutter portion 41 by gravity and is taken out to the outside. Thereby, the possibility of the moisture W scattering from the demister main body 4 can be reduced. Also, since the gutter portions 41 and the return portions 42 are respectively arranged with a space therebetween, the flow of the supply air G is not obstructed. For this reason, the generation of pressure loss in the air supply demister 100 can also be suppressed.

[0030] (2) In the air supply demister 100 according to the second aspect, the return surface 42a is inclined so as to be parallel to the receiving surface 41a.

[0031] According to the above configuration, since the return surface 42a is inclined, the condensed moisture can be dripped downward in the inclined direction and also toward the receiving surface 41a while flowing downward. Thereby, the moisture can be evacuated from the flow path more quickly.

[0032] (3) The air supply demister 100 according to the third aspect further includes a header 3 provided above the duct 1 and having a discharge port 31 for guiding fluid to the outside. The lower ends of the plurality of gutter portions 41 are connected to the discharge port 31.

[0033] According to the above configuration, the moisture W stored in the gutter portion 41 is discharged to the outside through the discharge port 31 formed in the header 3. Since the moisture can be discharged by the differential pressure between the header internal pressure and the atmospheric pressure, other devices such as a pump are not required, and the manufacturing cost and maintenance cost of the device can be reduced.

[0034] (4) The air supply demister 100 according to the fourth aspect further includes a projecting portion 6 that projects from the edge of the gutter portion 41 toward the receiving surface 41a side.

[0035] According to the above configuration, since the projecting portion 6 is provided on the gutter portion 41, the possibility that the moisture that has once dripped onto the gutter portion 41 scatters upward again can be reduced.

[0036] (5) The air supply demister 100 according to the fifth aspect further includes a cover portion 5 that covers at least the lower end portion of the gutter portion 41 from above.

[0037] According to the above configuration, since the cover portion 5 is provided, the possibility that the moisture that has once dripped onto the gutter portion 41 scatters upward again can be reduced.

[0038] (6) The air supply demister 100 according to the sixth aspect includes a plurality of the gutter portions 41 stacked in the vertical direction and a plurality of the return portions 42.

[0039] According to the above configuration, since a plurality of gutter portions 41 and a plurality of return portions 42 are stacked in the vertical direction, more moisture can be condensed and captured. Thereby, the processing performance of the air supply demister 100 can be improved.

[0040] (7) The air supply demister 100 according to the seventh aspect further includes a water-repellent coating layer C provided on the receiving surface 41a and the return surface 42a.

[0041] According to the above configuration, the coating layer C can avoid the retention of moisture on the receiving surface 41a and the return surface 42a and cause it to flow down quickly. As a result, the possibility of moisture scattering from the demister body 4 can be further reduced.

Explanation of Signs

[0042] 100 Air supply demister 1 Duct 2 Intercooler 3 Header 4 Demister body 5 Cover part 6 Protruding part 31 Drain outlet 32 Exhaust port 41 Gutter part 41a, 41a´ Receiving surface 41b Bottom surface 42 Return part 42a Return surface G Air supply W Moisture

Claims

1. A duct forming a flow path through which supply air flows from below upward, a demister body provided above the duct, comprising: The demister body has a receiving surface that is concave downward and extends obliquely, and a plurality of gutter portions arranged in parallel with a space therebetween, a plurality of return portions provided above the gutter portions, having a return surface that is concave upward, and arranged in parallel with a space therebetween, and has: In a vertical view, each of the return portions has the return surface straddling the adjacent receiving surfaces in the extending direction of the return surface, A supply air demister further having an overhanging portion that projects from the edge of the gutter portion toward the receiving surface side.

2. A duct forming a flow path through which supply air flows from below upward, a demister body provided above the duct, comprising: The demister body has a receiving surface that is concave downward and extends obliquely, and a plurality of gutter portions arranged in parallel with a space therebetween, a plurality of return portions provided above the gutter portions, having a return surface that is concave upward, and arranged in parallel with a space therebetween, and has: In a vertical view, each of the return portions has the return surface straddling the adjacent receiving surfaces in the extending direction of the return surface, A supply air demister further having a cover portion that covers at least the lower end of the gutter portions from above.

3. A duct forming a flow path through which supply air flows from below upward, a demister body provided above the duct, comprising: The demister body has a receiving surface that is concave downward and extends obliquely, and a plurality of gutter portions arranged in parallel with a space therebetween, a plurality of return portions provided above the gutter portions, having a return surface that is concave upward, and arranged in parallel with a space therebetween, and has: In a vertical view, each of the return portions has the return surface straddling the adjacent receiving surfaces in the extending direction of the return surface, A supply air demister further having a water-repellent coating layer provided on the receiving surface and the return surface.

4. The supply air demister according to any one of Claims 1 to 3, wherein the return surface is inclined so as to be parallel to the receiving surface.

5. Further comprising a header provided above the duct and having a discharge port for guiding fluid to the outside, The supply air demister according to any one of Claims 1 to 4, wherein the lower ends of the plurality of gutter portions are connected to the discharge port.

6. The air supply demister according to any one of claims 1 to 5, comprising a plurality of said gutter portions and a plurality of said return portions laminated in the vertical direction.

Images