A self-heating drainage and hydrogen discharge combination valve

Abstract

This invention discloses a self-heating drainage and hydrogen discharge combined valve, comprising an iron core, a frame sleeved outside the iron core, and an armature placed inside the iron core. A pole shoe is provided at the bottom inner end of the iron core. The end of the armature away from the pole shoe forms an inlet for water and hydrogen inflow and a switch for opening and closing the inlet between the armature and the iron core. The armature has a flow section for water and hydrogen flow, and the pole shoe has an outlet for drainage and hydrogen discharge. A heating section is provided between the iron core and the frame. This invention proposes a novel structure for the drainage and hydrogen discharge combined valve, utilizing a heating coil to regulate the internal temperature to achieve long-term operation at low temperatures, and utilizing the switch to fulfill the drainage and hydrogen discharge requirements.

Description

Technical Field

[0001] This invention relates to the field of hydrogen fuel cells, specifically a self-heating drainage and hydrogen discharge combination valve. Background Technology

[0002] During the operation of a hydrogen fuel cell, water is typically produced by using hydrogen and oxygen, which in turn generates electricity to drive a motor. To ensure continuous operation, it is necessary to maintain a certain gas concentration inside the cell and remove excess water.

[0003] Meanwhile, there is currently no good solution for vehicles operating in low-temperature conditions (below -20°C). Summary of the Invention

[0004] To address the shortcomings of the prior art, this invention provides a self-heating drainage and hydrogen discharge combination valve. This invention proposes a novel structure for the drainage and hydrogen discharge combination valve, utilizing a heating coil to regulate the internal temperature to meet the requirement of long-term operation at low temperatures, and using a switching unit to fulfill the drainage and hydrogen discharge needs.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a self-heating drainage and hydrogen discharge combination valve, comprising an iron core, a frame sleeved outside the iron core, and an armature placed inside the iron core. The bottom end of the iron core is provided with a pole shoe. The end of the armature away from the pole shoe forms an inlet for water and hydrogen and a switch for closing and opening the inlet between the armature and the iron core. The armature is provided with a flow section for water and hydrogen to pass through, and the pole shoe is provided with an outlet for drainage and hydrogen discharge.

[0006] A heating element is provided between the iron core and the frame.

[0007] Furthermore, the iron core is provided with a through hole to form the inlet.

[0008] Furthermore, a boss is provided at the end of the armature away from the pole shoe. The outer diameter of the boss is larger than the through hole, and the boss can block the through hole to form the switch part.

[0009] Furthermore, the boss is provided with a boss gasket.

[0010] Furthermore, the armature has a notch on the outer periphery of the boss, and a receiving cavity is formed between the notch and the iron core. The receiving cavity can communicate with the through hole when the boss is opened.

[0011] Furthermore, the flow section employs a through hole formed inside the armature, with one end of the through hole connected to the receiving cavity and the other end connected to the outlet.

[0012] Furthermore, the outlet adopts a through-hole with an irregular shape opened in the pole shoe, one end of which can be connected to the through hole and the other end connected to the outside.

[0013] Furthermore, a blind hole is provided on the end face of the armature near the pole shoe, and a spring is provided in the blind hole. The spring abuts against the pole shoe, and an abutment gasket is provided at the abutment point.

[0014] Furthermore, the heating element employs a heating coil.

[0015] In summary, the present invention has achieved the following technical effects:

[0016] This invention can precisely control the temperature of the gaseous, liquid, or mixed medium flowing through the iron core, and achieve the function of precisely controlling the flow channel switch;

[0017] This invention mainly achieves reliable temperature control by adding a special heating unit. This method has the advantages of high product adaptability, high production efficiency, and low cost.

[0018] This invention also increases the aperture size to meet the requirements of large flow rates for drainage and hydrogen discharge. Attached Figure Description

[0019] Figure 1 This is a cross-sectional schematic diagram of a self-heating drainage and hydrogen discharge combined valve provided in an embodiment of the present invention. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Example:

[0027] like Figure 1 As shown, a self-heating drainage and hydrogen discharge combination valve, particularly a self-heating drainage and hydrogen discharge combination valve (DP valve) for hydrogen fuel cells, includes an iron core 1, a frame 9 sleeved outside the iron core 1, and an armature 5 placed inside the iron core 1. The bottom end of the iron core 1 is provided with a pole shoe 13. The end of the armature 5 away from the pole shoe 13 forms an inlet for water and hydrogen and a switch for opening and closing the inlet between the armature 5 and the iron core 1. The armature 5 is provided with a flow section for water and hydrogen to pass through, and the pole shoe 13 is provided with an outlet for drainage and hydrogen discharge.

[0028] The iron core 1 is provided with a through hole 101 to form an inlet for the introduction of water and hydrogen.

[0029] The end of the armature 5 furthest from the pole shoe 13 is provided with a boss 53. The outer diameter of the boss 53 is larger than that of the through hole 101. The boss 53 can block the through hole 101 to form a switch part. When the boss 53 blocks the through hole 101, it is in the closed state. When the boss 53 moves away from the through hole 101, it is in the open state, allowing water and hydrogen to enter.

[0030] The boss 53 is equipped with a boss gasket 3 to ensure that there is no leakage when it is closed.

[0031] The armature 5 has a notch on the outer periphery of the boss 53, forming a receiving cavity 54 between the notch and the iron core 1. The receiving cavity 54 can communicate with the through hole 101 when the boss 53 is open. The receiving cavity 54 can temporarily contain the water and hydrogen that rush in when it is open, preventing the flow section from being unable to flow a large amount of water and hydrogen at the beginning, and ensuring that the armature will not overflow due to too much water and hydrogen.

[0032] The flow section uses a through hole 51 inside the armature 5. One end of the through hole 51 is connected to the receiving cavity 54, and the other end is connected to the outlet. In this embodiment, the through hole 51 is a series of circular holes to facilitate the flow of water and hydrogen, and the increased hole diameter meets the requirements for large-flow drainage and hydrogen discharge.

[0033] The outlet adopts a through-hole 131 opened in the pole shoe 13. One end of the through-hole 131 can be connected to the through hole 51, and the other end is connected to the outside, for drainage and hydrogen discharge.

[0034] A blind hole 52 is provided on the end face of the armature 5 near the pole shoe 13. A spring 8 is provided in the blind hole 52. The spring 8 abuts against the pole shoe 13, and abutting pad 12 is provided at the abutting point for shock absorption.

[0035] A heating element is provided between the iron core 1 and the frame 9. In this embodiment, the heating element is a heating coil 6, which can precisely control the temperature of the gaseous, liquid or mixed medium flowing through the iron core.

[0036] The present invention also includes an O-ring 2, a pressure plate 4, an armature 5, a drive coil 10, a housing 11, a plastic-encapsulated housing 14, an O-ring 15, and a fixing screw 16. The drive coil 10 is provided inside the housing 11, and a frame 9 is provided inside the drive coil 10. The top of the housing 11 is provided with a top cover 7, and the top of the top cover 7 is provided with a pressure plate 4. The outer side of the housing 11 and the top cover 7 is provided with a plastic-encapsulated housing 14. The bottom end of the housing 11 is connected to the iron core 1. The outer side of the iron core 1 is provided with a heating coil 6, and the heating coil 6 is connected to the pressure plate 4. The iron core 1 is provided with an armature 5, and through round holes are provided on both sides of the armature 5. The top of the armature 5 is provided with a sealing gasket 3, and the bottom end of the armature 5 is provided with a blind hole. A spring 8 is provided in the blind hole. The bottom end of the iron core 1 is provided with a pole shoe 13, and through irregular-shaped through holes are provided inside the pole shoe 13. The top of the pole shoe 13 is provided with a blind hole. A shock-absorbing pad 12 is provided in the blind hole. The bottom end of the pole shoe 13 is connected to the fixing screw 16. The bottom of the iron core 1 has an outlet, and the top of the iron core 1 has an inlet.

[0037] Heating coil 6 and drive coil 10 are connected to an external power supply via plugs. The drive coil is covered by a plastic-encased shell 14, which encloses the iron core, top cover, drive coil, frame and heating coil, and the shell is sealed to the iron core.

[0038] The armature 5 is equipped with a spring at its bottom end. When the armature slides along the axis to the top under the force of the spring, the sealing gasket comes into contact with the iron core, thereby closing the inlet. Under the magnetic force of the drive coil, the armature can slide along the axis to the bottom end, causing the sealing gasket to separate from the iron core, thus opening the inlet and realizing the function of precisely controlling the flow channel switch.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A self-heating drainage and hydrogen exhaust combination valve, comprising an iron core (1), a framework (9) sleeved outside the iron core (1), an armature (5) placed in the iron core (1), and a pole shoe (13) arranged at the bottom end of the iron core (1), characterized in that: The armature (5) at the end away from the pole shoe (13) forms an inlet for water and hydrogen and a switch for opening and closing the inlet between it and the iron core (1). The armature (5) is provided with a flow section for water and hydrogen to pass through, and the pole shoe (13) is provided with an outlet for water and hydrogen to be discharged. A heating element is provided between the iron core (1) and the frame (9); The iron core (1) is provided with a through hole (101) to form the inlet; The armature (5) has a boss (53) at the end away from the pole shoe (13). The outer diameter of the boss (53) is larger than the through hole (101). The boss (53) can block the through hole (101) to form the switch part. The armature (5) has a notch on the outer periphery of the boss (53), and a receiving cavity (54) is formed between the notch and the iron core (1). The receiving cavity (54) can communicate with the through hole (101) when the boss (53) is opened. The circulation section adopts a through hole (51) opened inside the armature (5), one end of the through hole (51) is connected to the receiving cavity (54), and the other end is connected to the outlet. The outlet adopts a through irregularly shaped through hole (131) opened in the pole shoe (13), one end of the through irregularly shaped through hole (131) can be connected to the through hole (51), and the other end is connected to the outside. The armature (5) has a blind hole (52) on its end face near the pole shoe (13). A spring (8) is provided in the blind hole (52). The spring (8) abuts against the pole shoe (13), and an abutment gasket (12) is provided at the abutment point.

2. The self-heating drainage and hydrogen discharge combined valve according to claim 1, characterized in that: The boss (53) is provided with a boss gasket (3).

3. The self-heating drainage and hydrogen discharge combined valve according to claim 1, characterized in that: The heating element uses a heating coil.

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