CN200959350Y - liquid fuel mixer - Google Patents

Abstract

The utility model relates to a liquid fuel blender for the required liquid fuel of storage fuel cell, it includes: the heat dissipation device comprises a shell, at least one heat dissipation member and a breathable liquid-impermeable film. The shell is used for forming a first inner space and a second inner space, wherein the first inner space is adjacent to the second inner space, the shell part for separating the first inner space from the second inner space is provided with at least more than one air inlet and at least more than one water outlet, and the second inner space is used for containing liquid fuel. The heat dissipation members are disposed in the first inner space. The air permeable and liquid impermeable film is arranged at the air inlet. The utility model discloses in order to avoid the comdenstion water to condense the inner wall, can set up the bottom of first inner space into a structure that has ramp and/or drainage way, and the delivery port setting is at the end of ramp or the lower side of drainage way structure.

Description

liquid fuel mixer

technical field

The utility model relates to a liquid fuel mixer for storing liquid fuel required by a fuel cell, and in particular to a liquid fuel mixer capable of recovering water reactants generated by the fuel cell.

Background technique

A fuel cell is a power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy through electrode reactions. There are quite a few types of fuel cells today, which can be distinguished according to the nature of the electrolyte: alkaline fuel cells, phosphoric acid fuel cells, proton exchange membrane fuel cells, molten carbonate fuel cells, solid oxide fuel cells and other fuel cells with five different electrolytes . Among them, the proton exchange membrane fuel cell also includes the so-called direct methanol fuel cell, which directly uses methanol as fuel without first transforming it into hydrogen. It is one of the technologies with high research and development energy at present. Use generators, portable power supplies, etc.

At present, the technical development of fuel cells is facing many challenges. Among them, the design of fuel supply system is the subject of research by many manufacturers, including the technical issue of how to recycle the water products produced by fuel cells after chemical reactions. In addition, how to miniaturize the fuel cell to reduce the overall volume is another issue that manufacturers are concerned about.

Utility model content

The main purpose of the utility model is to provide a liquid fuel mixer, which can be used to recycle the water product produced by the fuel cell and store the liquid fuel required by the fuel cell.

Another object of the present invention is to provide a liquid fuel mixer, which combines the condenser and the fuel mixing tank into a two-in-one structure to reduce the total volume of the fuel cell.

To achieve the above purpose, the utility model provides a liquid fuel mixer for storing liquid fuel required by a fuel cell, which includes: a housing, at least one heat sink, and an air-permeable and liquid-impermeable membrane. The casing is used to form a first internal space and a second internal space, wherein the first internal space is adjacent to the second internal space, and the casing part is used to separate the first internal space and the second internal space There are at least one air inlet and at least one water outlet, and the second internal space is used to accommodate liquid fuel. The cooling elements are arranged in the first internal space. The air-permeable and liquid-impermeable membrane is arranged at the air inlet.

The liquid fuel mixer of the utility model uses the first internal space as a condenser, and uses the second internal space to store the liquid fuel required by the fuel cell, and effectively utilizes the space so that the overall volume of the fuel cell can be significantly reduced. An advantage of utility models.

Another advantage of the utility model is that the aqueous solution storage tank necessary for the traditional fuel cell is omitted, and the condensed water from the first internal space is directly used to dilute the liquid fuel, so the fuel cell can be miniaturized . In addition, the condensed water in the first inner space can flow down to the second inner space under the action of gravity without pumping, so it also contributes to the miniaturization of the fuel cell.

In order to make those familiar with the art understand the purpose, features and effects of the present utility model, the utility model is described in detail as follows by following specific embodiments and accompanying drawings.

Description of drawings

Fig. 1 shows a sectional view of the liquid fuel mixer of the present invention.

FIG. 2 is a cross-sectional view taken along line I-I in FIG. 1 .

Fig. 3 shows a cross-sectional view of a variant embodiment of the liquid fuel mixer of the present invention.

Explanation of main component symbols

liquid fuel mixer 1

Shell 10

First interior space 100

Second interior space 102

air intake 104

Outlet 106

Air inlet 108

Radiator 12

Breathable and liquid impermeable membrane 14

steam 16

Check valve 18

Pressure relief valve 19

Liquid Fuel Mixer 3

liquid fuel 2

Detailed ways

Fig. 1 shows a sectional view of the liquid fuel mixer of the present invention, and Fig. 2 is a cross-sectional view taken along line I-I in Fig. 1 . The liquid fuel mixer 1 of the present utility model is used for storing the liquid fuel 2 required by the fuel cell, and the fuel cell suitable for the utility model can be a direct methanol fuel cell (DMFC), and the liquid fuel mixer 1 is used for storing directly Aqueous methanol solution for methanol fuel cells2. Of course, the utility model can also be applied to fuel cell devices using other kinds of liquid fuels.

Referring to FIG. 1 , the liquid fuel mixer 1 of the present invention includes the following components: a housing 10 , at least one heat sink 12 and an air-permeable and liquid-impermeable membrane 14 . The casing 10 is used to form a first internal space 100 and a second internal space 102 , and the first internal space 100 and the second internal space 102 are adjacent to each other. As shown in FIG. 1 , the first internal space 100 is adjacent to the second internal space 102 up and down, and the second internal space 102 may implement an L-shaped spatial structure (but not limited to this spatial structure). The housing portion 10 connected to and used to separate the first internal space 100 from the second internal space 102 has an air inlet 104 and a water outlet 106 . In practice, the bottom end of the first internal space 100 can be set as a structure with ramps and/or drains, and the water outlet 106 can be set at the end of the lower side of the ramp or drain structure, so that Avoid condensate condensation on the inner wall.

These heat sinks 12 are arranged in the first internal space 100, so the first internal space 100 is mainly used as a condensation space, so the liquid fuel mixer 1 also has the functions that a general condenser should have. As for the second internal space 102 in the present invention, it is mainly used to accommodate the liquid fuel 2 .

These heat sinks 12 can implement the structure of heat dissipation fins, for example, and as shown in FIG. Internal space 100.

The air-permeable and liquid-impermeable membrane 14 is disposed at the air inlet 104 . In a specific embodiment, the air-permeable and liquid-impermeable film 14 can tightly cover the air inlet 104 and be fixed to the casing 10 . By setting the gas-permeable and liquid-impermeable membrane 14, the water vapor 16 evaporated from the liquid fuel 2 in the second internal space 102 due to high temperature can pass through the gas-permeable and liquid-impermeable membrane 14 and enter the first internal space 100, and then the water vapor 16 can also participate in the condensation operation performed in the first internal space 100 .

Moreover, the liquid fuel mixer 1 of the present invention may further include a check valve 18 , and the check valve 18 is disposed at the water outlet 106 . The function of the check valve 18 is to only allow the condensed water in the first internal space 100 to flow to the second internal space 102 in one direction. However, if the liquid fuel 2 in the second internal space 102 rises to the position of the water outlet 106 , it cannot flow into the first internal space 100 due to the non-return function of the check valve 18 .

As shown in Figure 2, the housing 10 located outside the first internal space 100 is further provided with an air inlet 108, and the air inlet 108 communicates with the first internal space 100, and the air inlet 108 can be connected to the fuel cell for discharge. Outlet for gaseous products (not shown in the figure). Taking the direct methanol fuel cell as an example, the air inlet 108 can be connected to the outlet of the direct methanol fuel cell for discharging the water vapor product.

Fig. 3 shows a cross-sectional view of a variant embodiment of the liquid fuel mixer of the present invention. The casing part 10 of the liquid fuel mixer 3 used to separate the first internal space 100 from the second internal space 102 has at least one air inlet 104 . Moreover, the liquid fuel mixer 3 may further include a pressure relief valve 19 disposed at the air inlet 104 . The setting of the pressure relief valve 19 can maintain the safe gas pressure in the second internal space 102 and prevent abnormal pressure from damaging the air-permeable and liquid-impermeable membrane 14 . When the gas pressure formed by the water vapor 16 exceeds a certain safety set value, the pressure relief valve 19 can be automatically opened to release some water vapor 16 directly into the first internal space 100. When the gas pressure returns below the safe set value, The pressure relief valve 19 can then be automatically and slowly closed.

Moreover, in order to make the first internal space 100 used as the condensation space in the liquid fuel mixer 1, 3 of the present utility model have a better condensation effect, the material of the shell 10 of the liquid fuel mixer 1, 3 can use a It should be made of a thermally conductive material, preferably an acid-resistant metal. Of course, the material of the housing 10 of the liquid fuel mixer 1, 3 can also be plasticized material that has been treated with anti-acid, such as plastic.

The liquid fuel mixer 1, 3 of the present invention uses the first internal space 100 as a condenser, and uses the second internal space 102 to store the liquid fuel 2 required by the fuel cell, effectively utilizing the space, so that the overall volume of the fuel cell Can significantly reduce, is an advantage of the present utility model.

Another advantage of the present utility model is that the aqueous solution storage tank necessary for conventional fuel cells is omitted, and the condensed water from the first internal space 100 is directly used to dilute the liquid fuel, so the fuel cell can be made smaller change. In addition, the condensed water in the first inner space 100 can flow down to the second inner space 102 under the action of gravity without pumping, so it also contributes to the miniaturization of the fuel cell.

Although the utility model has been disclosed above with specific embodiments, the disclosed specific embodiments are not intended to limit the utility model. Such changes and modifications all belong to the category of the present utility model, and the protection scope of the present utility model should be as the criterion as defined by the claims.

Claims (15)

1. A liquid fuel mixer for storing liquid fuel required by a fuel cell, characterized in that: comprising: A shell, used to form a first internal space and a second internal space, wherein the first internal space is adjacent to the second internal space, and connected to and used to separate the first internal space from the second internal space The housing portion of the second internal space has at least one air inlet and at least one water outlet, and the second internal space is used to accommodate the liquid fuel; At least one heat sink is arranged in the first internal space; A gas-permeable and liquid-impermeable membrane is arranged at the air inlet. 2. The liquid fuel mixer as claimed in claim 1, further comprising: a check valve disposed at the water outlet. 3. The liquid fuel mixer as claimed in claim 1, further comprising: a pressure relief valve disposed at the air inlet. 4. The liquid fuel mixer as claimed in claim 1, wherein the first internal space is adjacent to the second internal space above and below. 5. The liquid fuel mixer as claimed in claim 1, wherein the second internal space is an L-shaped space structure. 6. The liquid fuel mixer as claimed in claim 1, wherein the cooling member is a cooling fin. 7. The liquid fuel mixer according to claim 1, characterized in that: the casing has an air inlet, and the air inlet communicates with the first internal space, and the diameter of the air inlet is connected to the fuel cell. To discharge the gaseous product outlet. 8. The liquid fuel mixer as claimed in claim 1, characterized in that: the bottom end of the first internal space is a structure with a ramp and/or a drain. 9. The liquid fuel mixer according to claim 8, characterized in that: the water outlet is arranged at the end of the lower side of the ramp and/or the flow channel structure. 10. The liquid fuel mixer of claim 1, wherein the housing is a thermally conductive material. 11. The liquid fuel mixer as claimed in claim 10, wherein the heat-conducting material is an acid-proof treated metal material. 12. The liquid fuel mixer of claim 1, wherein the housing is a plasticized material. 13. The liquid fuel mixer as claimed in claim 12, wherein the plasticized material is an anti-acid treated material. 14. The liquid fuel mixer as claimed in claim 1, wherein the liquid fuel is an aqueous methanol solution. 15. The liquid fuel mixer of claim 1, wherein the fuel cell is a direct methanol fuel cell.

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