Humidifier for fuel cell engine

Abstract

A humidifier and a fluid director for a fuel cell engine, the humidifier comprises a humidifying cylinder and a fluid director, the rear end of the fluid director is mounted to the front end of the humidifying cylinder, the front end of the fluid director is used for being connected to an intercooler, the humidifying cylinder is internally provided with a humidifying cavity, and the fluid director is mounted in the humidifying cavity. A flow guide cavity communicated with the humidifying cavity is formed in the flow guide device, the flow guide cavity comprises a plurality of guide cavities which are communicated in sequence, and the flow areas of the guide cavities are sequentially increased in the direction from the direction away from the humidifying cavity to the direction close to the humidifying cavity; after air enters the flow guide cavity from the front end of the flow guide device, the flow area of the air in the flow guide cavity is gradually increased, the sudden change frequency of the flow area of the air in the flow guide cavity is increased, and the sudden change degree of the flow area each time is reduced, so that the pressure drop of gas is reduced, the auxiliary consumption of a system is reduced, and the overall efficiency of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of humidifiers, in particular to a humidifier used for a fuel cell engine. Background Art

[0002] At present, membrane humidifiers are generally used for air humidification in fuel cell engines. Dry air is cooled from an intercooler and then enters the humidifier. The intercooler and the humidifier are connected by a pipeline. The gas flow area in the pipeline is small, and the gas flow area in the inner cavity of the humidifier is large. When the gas is output from the pipeline to the inner cavity of the humidifier, the gas flow area suddenly increases, causing gas turbulence, which in turn causes a large gas pressure drop, increases the auxiliary consumption of the system, and reduces the overall efficiency of the system. Utility Model Content

[0003] The utility model aims to provide a humidifier for a fuel cell engine, so as to solve the technical problem that in the fuel cell engine, during the process of conveying air from an intercooler to a humidifier, the air pressure drop is large, thereby reducing the overall efficiency of the system.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a humidifier for a fuel cell engine, including a humidifying cylinder and a deflector, the rear end of the deflector is installed to the front end of the humidifying cylinder, the front end of the deflector is used to connect to an intercooler, a humidifying chamber is provided in the humidifying cylinder, a deflector is provided in the deflector and the deflector is connected to the humidifying chamber, the deflector includes a plurality of guide chambers connected in sequence, and the flow area of ​​each guide chamber increases in sequence from away from the humidifying chamber to close to the humidifying chamber.

[0005] Optionally, it also includes a first fixing bolt, the outer wall of the humidifying cylinder is provided with a first edge protruding outward, the front end surface of the first edge is provided with a plurality of first holes along the circumference of the humidifying cylinder, the end of the deflector close to the humidifying cylinder is provided with a first connecting portion, the first connecting portion is provided with a plurality of second holes extending from its front end surface to its rear end surface, the second holes correspond to the first holes one by one, the first connecting portion is sleeved on the outside of the outer wall of the humidifying cylinder, the rear end surface of the first connecting portion is against the front end surface of the first edge, and the first fixing bolt passes through the first hole and the second hole to fix the deflector and the humidifying cylinder.

[0006] Optionally, the deflector includes an end cover and a plurality of adapters, the end cover includes a cover plate and a plurality of second connection parts corresponding one to the adapters, the cover plate covers the front end of the humidification cylinder and is fixedly connected to the humidification cylinder, the second connection part is arranged on the other side of the cover plate, each of the adapters is respectively connected to the corresponding second connection part, and the guide cavity is provided in the cover plate and the adapter.

[0007] Optionally, a plurality of membrane tubes parallel to each other are provided in the humidification chamber, and the extension lines of the axes of the membrane tubes converge into the guide chamber of the cover plate, and the flow area of ​​the guide chamber of the cover plate gradually increases from away from the humidification chamber to close to the humidification chamber.

[0008] Optionally, the cover plate is an arc-shaped plate arched in a direction away from the humidification cylinder.

[0009] Optionally, the adapter includes an air intake portion and a reducing portion connected in sequence, the front end of the air intake portion is used to connect to an intercooler, and the rear end of the reducing portion is connected to the second connecting portion, and the guide cavity is respectively provided in the air intake portion and the reducing portion, and the flow area of ​​the guide cavity of the air intake portion is smaller than the flow area of ​​the guide cavity of the reducing portion.

[0010] Optionally, the air inlet portion is arranged on the bottom surface of the diameter-changing portion.

[0011] Optionally, the deflector also includes a second fixing bolt, a second side eave is provided on the outer side wall at the rear end of the adapter, the second side eave is arranged around the guide cavity of the adapter, the rear end face of the second side eave is provided with a plurality of through third holes around the guide cavity of the adapter, the front end face of the second connecting part is provided with a plurality of fourth holes corresponding to the third holes one by one, the rear end face of the second side eave is against the front end face of the second connecting part, the second fixing bolt passes through the third hole and is inserted into the fourth hole to fix the second side eave and the second connecting part.

[0012] Optionally, it further comprises a first sealing ring, wherein the first sealing ring is arranged between the end cover and the humidifying cylinder;

[0013] The deflector further includes a second sealing ring, which is arranged between the end cover and the adapter.

[0014] The utility model also relates to a deflector, which is the above-mentioned deflector.

[0015] Compared with the prior art, the humidifier of the utility model has the following beneficial effects:

[0016] The humidifying cylinder of the utility model is provided with a humidifying chamber, and the deflector is provided with a guide chamber connected to the humidifying chamber. The guide chamber includes a plurality of guide chambers connected in sequence, and the flow area of ​​each guide chamber increases in sequence from a direction away from the humidifying chamber to a direction close to the humidifying chamber, so that after the air enters the guide chamber from the front end of the deflector, the flow area of ​​the air in the guide chamber gradually increases, the number of sudden changes in the flow area of ​​the air in the guide chamber is increased, and the degree of each sudden change in the flow area is reduced, so as to reduce the pressure drop of the gas, reduce the auxiliary consumption of the system, and increase the overall efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the humidifier of the utility model.

[0018] Figure 2 It is the front view of the humidifier of the utility model.

[0019] Figure 3 It is a cross-sectional view of the humidifier of the utility model.

[0020] Figure 4 It is a left view of the humidifier of the utility model.

[0021] Figure numerals: 1. humidifying cylinder; 11. humidifying chamber; 12. membrane tube; 13. first side eaves; 2. deflector; 21. end cover; 211. cover plate; 212. second connecting part; 22. adapter; 221. air inlet part; 222. reducing part; 223. second side eaves; 23. first connecting part; 24. second sealing ring; 25. deflector chamber; 3. first fixing bolt; 4. first sealing ring. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] like Figures 1 to 4As shown, a humidifier of the utility model includes a humidifying cylinder 1 and a deflector 2, the rear end of the deflector 2 is installed to the front end of the humidifying cylinder 1, the front end of the deflector 2 is used to connect to the intercooler, the humidifying cylinder 1 is provided with a humidifying chamber 11, the deflector 2 is provided with a deflector chamber 25 connected with the humidifying chamber 11, the deflector chamber 25 includes a plurality of guide chambers connected in sequence, and the flow area of ​​each guide chamber increases sequentially along the direction away from the humidifying chamber 11 to the direction close to the humidifying chamber 11.

[0026] In the above technical scheme, after the air enters the guide cavity 25 from the front end of the deflector 2, the flow area of ​​the air in the guide cavity 25 gradually increases, increasing the number of sudden changes in the flow area of ​​the air in the guide cavity 25 and reducing the degree of each sudden change in the flow area, so as to reduce the pressure drop of the gas, reduce the auxiliary consumption of the system, and increase the overall efficiency of the system; in addition, in the utility model, the setting method in which each guide cavity is arranged in sequence to increase in size and gradually increase the inner diameter of the guide cavity 25 has the advantages of easy demoulding and low manufacturing cost, and according to a certain ratio, the effect of reducing the pressure drop of the two is not much different.

[0027] Furthermore, the specific connection relationship between the humidifying cylinder 1 and the deflector 2 is as follows: the humidifier also includes a first fixing bolt 3, the outer wall of the humidifying cylinder 1 is provided with a first edge 13 protruding outward, and the front end face of the first edge 13 is provided with a plurality of first holes along the circumference of the humidifying cylinder 1, and the end of the deflector 2 close to the humidifying cylinder 1 is provided with a first connecting portion 23 protruding, and the first connecting portion 23 is provided with a plurality of second holes extending from its front end face to its rear end face, and the second holes correspond to the first holes one by one, and the first connecting portion 23 is sleeved on the outside of the outer wall of the humidifying cylinder 1, and the rear end face of the first connecting portion 23 is against the front end face of the first edge 13, and the first fixing bolt 3 passes through the first hole and the second hole to fix the deflector 2 and the humidifying cylinder 1.

[0028] Furthermore, the deflector 2 includes an end cover 21 and a plurality of adapters 22, the end cover 21 includes a cover plate 211 and a plurality of second connection parts 212 corresponding to the adapters 22 one by one, the cover plate 211 covers the front end of the humidification cylinder 1 and is fixedly connected to the humidification cylinder 1, the second connection part 212 is arranged on the other side of the cover plate 211, each of the adapters 22 is respectively connected to the corresponding second connection part 212, and the guide cavity is provided in the cover plate 211 and the adapter 22; wherein, the guide cavity is respectively provided in the adapter 22, so that the air is respectively input into the plurality of adapters 22 and then merged into the end cover 21.

[0029] Furthermore, in a commonly used humidifier for a fuel cell engine, the air entering the humidifier can only be blown to the membrane tube 12 in a single area, which makes the utilization rate of the membrane tube 12 low, and the air cannot be humidified evenly, resulting in poor humidification performance. In order to improve the humidification performance, a plurality of membrane tubes 12 parallel to each other are provided in the humidification chamber 11, and the extension lines of the axes of the membrane tubes 12 are all converged to the guide cavity of the cover plate 211, and the flow area of ​​the guide cavity of the cover plate 211 gradually increases from away from the humidification chamber 11 to close to the humidification chamber 11, and the flow The air to the guide cavity of the cover plate 211 can be uniformly circulated along its cavity wall to each of the membrane tubes 12, so that each of the membrane tubes 12 can humidify the air, the utilization rate of the membrane tubes 12 is high, the humidification is uniform, and the humidification performance is good; in addition, the cover plate 211 is an arc-shaped plate arched away from the humidification cylinder 1, which can further reduce the pressure drop of the air in the guide cavity in the cover plate 211; in addition, only the flow area of ​​the guide cavity set by the cover plate is variable, and the flow areas of other guide cavities are unchanged.

[0030] Furthermore, the adapter 22 includes an air intake portion 221 and a reducing portion 222 connected in sequence, the front end of the air intake portion 221 is used to connect to the intercooler, and the rear end of the reducing portion 222 is connected to the second connecting portion 212, and the guide cavity is respectively provided in the air intake portion 221 and the reducing portion 222, and the flow area of ​​the guide cavity of the air intake portion 221 is smaller than the flow area of ​​the guide cavity of the reducing portion 222, so that the flow area of ​​air in the adapter 22 can change twice.

[0031] Furthermore, in order to adapt to the arrangement of various components in the fuel cell engine, the air inlet portion 221 is arranged on the bottom surface of the diameter-reducing portion 222 .

[0032] Furthermore, the specific connection method between the cover plate 211 and the adapter 22 is: the deflector 2 also includes a second fixing bolt, a second side eave 223 is provided on the outer side wall at the rear end of the adapter 22, the second side eave 223 is arranged around the guide cavity of the adapter 22, the rear end face of the second side eave 223 is provided with a plurality of through third holes around the guide cavity of the adapter 22, the front end face of the second connecting part 212 is provided with a plurality of fourth holes corresponding to the third holes one by one, the rear end face of the second side eave 223 is against the front end face of the second connecting part 212, the second fixing bolt passes through the third hole, and is inserted into the fourth hole to fix the second side eave 223 and the second connecting part 212.

[0033] Furthermore, in order to prevent air leakage, the humidifier also includes a first sealing ring 4, which is arranged between the end cover 21 and the humidification cylinder 1; the deflector 2 also includes a second sealing ring 24, which is arranged between the end cover 21 and the adapter 22.

[0034] The utility model also relates to a deflector 2, which is the deflector 2 mentioned above.

[0035] Furthermore, the specific connection methods of fixed setting and fixed connection refer to the relative position relationship of two components that can be fixedly connected, including fixing by connecting parts, fixing by welding, fixing by adhesives, fixing by integral molding, and fixing by snap connections.

[0036] Furthermore, the connecting parts include fasteners, straps, ties, pneumatic connecting elements, hydraulic connecting elements, flange plates, Velcro, and buttons.

[0037] In summary, the embodiment of the utility model provides a humidifier, and its technical effects are:

[0038] The humidifying cylinder of the utility model is provided with a humidifying chamber, and the deflector is provided with a guide chamber connected to the humidifying chamber. The guide chamber includes a plurality of guide chambers connected in sequence, and the flow area of ​​each guide chamber increases in sequence from a direction away from the humidifying chamber to a direction close to the humidifying chamber, so that after the air enters the guide chamber from the front end of the deflector, the flow area of ​​the air in the guide chamber gradually increases, the number of sudden changes in the flow area of ​​the air in the guide chamber is increased, and the degree of each sudden change in the flow area is reduced, so as to reduce the pressure drop of the gas, reduce the auxiliary consumption of the system, and increase the overall efficiency of the system.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A humidifier, characterized in that: The invention comprises a humidifying cylinder (1) and a deflector (2), wherein the rear end of the deflector (2) is mounted to the front end of the humidifying cylinder (1), and the front end of the deflector (2) is used to be connected to an intercooler. The humidifying cylinder (1) is provided with a humidifying chamber (11), and the deflector (2) is provided with a deflector chamber (25) connected to the humidifying chamber (11). The deflector chamber (25) comprises a plurality of deflector chambers connected in sequence, and the flow area of ​​each deflector chamber increases in sequence from away from the humidifying chamber (11) to close to the humidifying chamber (11).

2. The humidifier according to claim 1, characterized in that It also includes a first fixing bolt (3), the outer wall of the humidifying cylinder (1) is provided with a first edge (13) protruding outward, the front end surface of the first edge (13) is provided with a plurality of first holes along the circumference of the humidifying cylinder (1), the deflector (2) is provided with a first connecting portion (23) protruding at one end close to the humidifying cylinder (1), the first connecting portion (23) is provided with a plurality of second holes extending from its front end surface to its rear end surface, the second holes corresponding to the first holes one by one, the first connecting portion (23) is sleeved on the outer side of the outer wall of the humidifying cylinder (1), the rear end surface of the first connecting portion (23) is against the front end surface of the first edge (13), the first fixing bolt (3) passes through the first hole and the second hole to fix the deflector (2) and the humidifying cylinder (1).

3. The humidifier according to claim 1, characterized in that The deflector (2) comprises an end cover (21) and a plurality of adapters (22); the end cover (21) comprises a cover plate (211) and a plurality of second connection parts (212) corresponding one to the adapters (22); the cover plate (211) covers the front end of the humidifying cylinder (1) and is fixedly connected to the humidifying cylinder (1); the second connection part (212) is arranged on the other side of the cover plate (211); each of the adapters (22) is respectively connected to the corresponding second connection part (212); and the guide cavity is provided in both the cover plate (211) and the adapter (22).

4. The humidifier according to claim 3, characterized in that: A plurality of membrane tubes (12) parallel to each other are arranged in the humidification chamber (11), and the extension lines of the axes of the membrane tubes (12) converge into the guide chamber of the cover plate (211), and the flow area of ​​the guide chamber of the cover plate (211) gradually increases from being away from the humidification chamber (11) to being close to the humidification chamber (11).

5. The humidifier according to claim 4, characterized in that The cover plate (211) is an arc-shaped plate that arches in a direction away from the humidifying cylinder (1).

6. The humidifier according to claim 3, characterized in that: The adapter (22) comprises an air intake portion (221) and a reducing portion (222) which are connected in sequence, the front end of the air intake portion (221) is used to connect to the intercooler, and the rear end of the reducing portion (222) is connected to the second connecting portion (212), and the guide cavity is respectively provided in the air intake portion (221) and the reducing portion (222), and the flow area of ​​the guide cavity of the air intake portion (221) is smaller than the flow area of ​​the guide cavity of the reducing portion (222).

7. The humidifier according to claim 6, characterized in that The air inlet portion (221) is arranged on the bottom surface of the diameter-changing portion (222).

8. The humidifier according to claim 3, characterized in that: The deflector (2) also includes a second fixing bolt, a second side eave (223) is provided on the outer side wall of the rear end of the adapter (22), the second side eave (223) is arranged around the guide cavity of the adapter (22), the rear end face of the second side eave (223) is provided with a plurality of third through holes around the guide cavity of the adapter (22), the front end face of the second connecting part (212) is provided with a plurality of fourth holes corresponding to the third holes one by one, the rear end face of the second side eave (223) is against the front end face of the second connecting part (212), the second fixing bolt passes through the third hole and is inserted into the fourth hole to fix the second side eave (223) and the second connecting part (212) in connection.

9. The humidifier according to claim 3, characterized in that: It also includes a first sealing ring (4), wherein the first sealing ring (4) is arranged between the end cover (21) and the humidifying cylinder (1); The deflector (2) further comprises a second sealing ring (24), wherein the second sealing ring (24) is arranged between the end cover (21) and the adapter (22).

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