A multi-way valve body

Abstract

The present application discloses a multi-way valve body, comprising a first sealing chamber and a second sealing chamber stacked up and down, a first valve port formed on one side of the second sealing chamber, a partition formed between the first sealing chamber and the second sealing chamber, a plurality of first through holes connecting the first sealing chamber and the second sealing chamber arranged circumferentially on the outer side of the partition, a third sealing chamber formed in the first sealing chamber on the inner side of the plurality of first through holes, a plurality of second through holes connecting the first sealing chamber and the third sealing chamber formed on the side wall of the third sealing chamber, a plurality of second valve ports formed in sequence on the side wall of the third sealing chamber, each of the second valve ports extending through the first sealing chamber, a cock installed on the axis of the third sealing chamber. The present invention meets multiple adjustment requirements such as direct-through fuel cell stack, bypass exhaust, gas humidification, fuel cell stack shell purging, etc. by adjusting the angle of the internal cock.

Description

Technical Field

[0001] The present application relates to a valve body, and in particular to a multi-way valve body. Background Art

[0002] Based on the electrochemical principles of fuel cells and the application of fuel cell products in complete vehicles, the cathode chamber (air chamber) has different operating conditions, mainly divided into direct-flow to the stack, bypass exhaust, and humidification treatment. Different reversing valves are required to switch between these various operating conditions, which means they occupy a lot of space, are relatively difficult to control, and often pose sealing issues.

[0003] Currently, two-way selector valves for direct-through fuel cells and bypass exhaust have been developed on the market, but their functions cannot meet the needs of high integration and are relatively simple and single.

[0004] According to the reaction requirements of the fuel cell stack, the core component of the fuel cell system, the cathode chamber mainly has the following operating conditions: 1) directly into the fuel cell stack; 2) bypass exhaust; 3) into the fuel cell stack after humidification. Based on the above operating conditions, the market has developed two-way valves for direct injection into the fuel cell stack and bypass exhaust. The main disadvantages are as follows:

[0005] 1) Single function, just a simple two-way valve;

[0006] 2) Large flow resistance affects the system reaction efficiency;

[0007] 3) The installation point is difficult to operate;

[0008] 4) There is internal leakage inside the valve body and the sealing effect is poor. Summary of the Invention

[0009] The purpose of the present invention is to provide a multi-way valve body, which can meet multiple adjustment requirements such as direct-through fuel cell, bypass exhaust, gas humidification, and fuel cell shell purging by adjusting the angle of the internal cock according to the fuel cell reaction requirements and the actual application conditions.

[0010] To achieve the above objectives, the present invention provides the following technical solutions.

[0011] An embodiment of the present application discloses a multi-way valve body, including a first sealing cavity and a second sealing cavity stacked up and down, a first valve port formed on one side of the second sealing cavity, a partition formed between the first sealing cavity and the second sealing cavity, a plurality of first through holes connecting the first sealing cavity and the second sealing cavity are arranged in a circumferential direction on the outer side of the partition, a third sealing cavity is formed in the first sealing cavity by sealing on the inner side of the plurality of first through holes, a plurality of second through holes connecting the first sealing cavity and the third sealing cavity are formed on the side wall of the third sealing cavity, a plurality of second valve ports are formed in sequence on the side wall of the third sealing cavity, each of the second valve ports seals and extends through the first sealing cavity, a plug is rotatably installed on the axis of the third sealing cavity, when one of the second valve ports is opened, the plug seals all the other second valve ports.

[0012] Preferably, in the above-mentioned multi-way valve body, the first valve port is an air inlet, and three second valve ports are provided, namely a bypass port, a humidification port, and a stack direct inlet.

[0013] Preferably, in the above-mentioned multi-way valve body, a purge port is formed on one side of the first sealing cavity.

[0014] Preferably, in the above-mentioned multi-way valve body, a control module for driving the plug is provided at the center of the second sealed cavity.

[0015] Preferably, in the above-mentioned multi-way valve body, a fourth sealed cavity is formed below the second sealed cavity, an exhaust inlet and an exhaust outlet are formed on both sides of the fourth sealed cavity, and an adjustment baffle is formed in the middle of the fourth sealed cavity.

[0016] Preferably, in the above-mentioned multi-way valve body, an elastic sealing gasket is formed at the end of the plug for sealing the second through hole.

[0017] Compared with the existing technology, the advantages of the present invention are: it integrates multiple adjustment requirements of the fuel cell system stack reaction, such as straight-through stack, bypass exhaust, gas humidification, and stack shell purging; the valve body structure is highly integrated and the structural size is small; considering the direction adjustment requirements, the direction adjustment can be achieved by adjusting the plug angle, and the control is simple and feasible; a pressure self-sealing scheme is set at the edge of the plug end, which has good air tightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Shown is a three-dimensional view of a multi-way valve body in a specific embodiment of the present invention;

[0020] Figure 2 Shown is a three-dimensional view of a multi-way valve body in another perspective in a specific embodiment of the present invention;

[0021] Figure 3 Shown is an internal view of a multi-way valve body in a specific embodiment of the present invention;

[0022] Figure 4 Shown is a cross-sectional view of a multi-way valve body in a specific embodiment of the present invention;

[0023] Figure 5-Figure 7 Shown is a flow diagram of the gas inside the multi-way valve body at different gears in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following is a detailed description of the technical solutions in the embodiments of the present invention, with reference to the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Combine Figure 1-4As shown, the multi-way valve body 100 includes a first sealed cavity 101 and a second sealed cavity 102 stacked up and down, a first valve port 103 formed on one side of the second sealed cavity 102, a partition 104 formed between the first sealed cavity 101 and the second sealed cavity 102, a plurality of first through holes 105 connecting the first sealed cavity 101 and the second sealed cavity 102 are circumferentially arranged on the outer side of the partition 104, a third sealed cavity 106 is formed in the first sealed cavity 101 and sealed on the inner side of the plurality of first through holes 105, a plurality of second through holes 107 connecting the first sealed cavity 101 and the third sealed cavity 106 are formed on the side wall of the third sealed cavity 106, and a plurality of second valve ports 108 are sequentially formed on the side wall of the third sealed cavity 106, each second valve port 108 sealingly extending through the first sealed cavity 101, and a plug 109 is rotatably installed on the axis of the third sealed cavity 106. When one of the second valve ports 108 is opened, the plug 109 seals all the other second valve ports 108. The first valve port 103 is an air inlet, and the second valve port 108 is provided with three ports, namely a bypass port 1081, a humidification port 1082, and a stack direct inlet 1083. A purge port 110 is formed on one side of the first sealed cavity 101. A control module 111 for driving the plug 109 is provided in the center of the second sealed cavity 102. A fourth sealed cavity 112 is formed below the second sealed cavity 102, and an exhaust inlet 113 and an exhaust outlet 114 are formed on both sides of the fourth sealed cavity 112, and an adjustment baffle 115 is formed in the middle of the fourth sealed cavity 112. An elastic sealing gasket 116 is formed at the end of the plug 109 for sealing the second through hole 107.

[0026] When used specifically:

[0027] For the air inlet to bypass port solution, the position of the cock is as follows: Figure 7 As shown in the figure, when the bypass is opened, all interfaces except the purge port are blocked.

[0028] For the direct connection from air inlet to stack, the position of the cock is as follows: Figure 5 As shown, when the direct inlet of the stack is opened, all interfaces except the purge port are blocked.

[0029] For the air inlet to humidification port solution, the stopcock position is as follows: Figure 6 As shown, when the humidification port is opened, other interfaces except the purge port are blocked.

[0030] The tail exhaust is achieved by adjusting the baffle angle. In the middle is the regulating valve motor. The upper and lower angle adjustments do not intersect and are independently controlled.

[0031] A non-metallic soft seal is provided at the end of the plug, and the soft seal material is tightly adhered to the inner side wall by the internal pressure of the chamber, so the sealing effect is good.

[0032] This technical solution integrates multiple adjustment requirements of the fuel cell system's stack reaction, such as straight-through stack, bypass exhaust, gas humidification, and stack shell purging; the valve body structure is highly integrated and has a small structural size; considering the direction adjustment requirements, the direction adjustment can be achieved by simply adjusting the plug angle, and the control is simple and feasible; a pressure self-sealing solution is set at the edge of the plug end, which has good air tightness.

[0033] Moreover, this technical solution increases the cross-sectional area of ​​each channel, and the flow resistance of the valve body is small; the various joints and connectors of the valve body are close to each other, which is convenient for installation and maintenance; double-sided fixing points are set for easy installation and fixation; in order to better integrate the valve components, considering the need for tail exhaust back pressure cutoff of the cathode chamber (air chamber) of the fuel power system, the cutoff and back pressure functions of the tail exhaust valve are integrated at the same time.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0035] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A multi-way valve body, characterized in that: The vent valve of the second sealing chamber is connected with the air inlet of the air vent, and the vent valve of the second sealing chamber is connected with the air vent of the second sealing chamber.

2. The multi-way valve body according to claim 1, characterized in that: A purge port is formed on one side of the first sealed cavity.

3. The multi-way valve body according to claim 1, characterized in that: A control module for driving the cock is provided at the center of the second sealed cavity.

4. The multi-way valve body according to claim 1, characterized in that: A fourth sealed cavity is formed below the second sealed cavity, an exhaust inlet and an exhaust outlet are formed on both sides of the fourth sealed cavity, and an adjustment baffle is formed in the middle of the fourth sealed cavity.

5. The multi-way valve body according to claim 1, characterized in that: An elastic sealing gasket is formed at the end of the plug for sealing the second through hole.

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