Control valve and heat dissipation system
By designing a control valve with integrated filters in the heat dissipation system of the fuel cell system, the problems of large space occupation, inconvenient assembly and coolant penetration are solved, and more efficient heat dissipation and more stable stack operation are achieved.
Patent Information
- Application Number
- CN202420506503.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-03-15
AI Technical Summary
The existing heat dissipation system of fuel cell systems has problems such as large space occupation, inconvenient assembly, and coolant penetration into the stack chamber, which affects catalyst activity and system output power.
A control valve is designed to integrate a first filter into the first valve port, and to control the communication of the valve port through a control assembly to avoid penetration of coolant.
The system reduces space occupation, facilitates assembly, and effectively prevents coolant from penetrating into the stack chamber, protects catalyst activity, and improves the output power of the system.
Smart Images
Figure CN222479523U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fuel cells, in particular to a control valve and a heat dissipation system. Background Art
[0002] At present, in order to dissipate heat from the fuel cell stack, a radiator is usually installed in the fuel cell system. The coolant continuously circulates in the radiator to dissipate heat from the fuel cell stack. A replenishing tank is provided to absorb the coolant vapor discharged from the radiator and replenish the coolant into the radiator, thereby ensuring that the temperature of the coolant circulating in the radiator meets the requirements, thereby achieving a heat dissipation effect.
[0003] However, the existing heat dissipation system has two defects. On the one hand, in order to prevent impurities from entering the fuel cell stack from the water supply tank, a filter is usually added to the pipe connecting the water supply tank to the system. However, due to the limited space of the entire heat dissipation system, the addition of the filter will take up extra space, thereby increasing the difficulty of taking over the pipe and making it inconvenient to assemble. On the other hand, since the water supply tank is usually arranged above the fuel cell stack, there will be a pressure difference in the coolant pipeline between the water supply tank and the fuel cell stack. When the heat dissipation system is turned off, the pressure difference will cause the coolant at the fuel cell stack inlet to penetrate into the fuel cell stack cavity, resulting in a large area of viscous coolant covering the catalyst surface layer, which reduces the activity of the catalyst and affects the output power of the system. Utility Model Content
[0004] The purpose of the utility model is to provide a control valve and a heat dissipation system, which not only reduces the occupied space and is convenient for assembly, but also can prevent the coolant from penetrating into the chamber in the fuel cell stack.
[0005] In order to achieve the above-mentioned objectives, the present invention provides a control valve, comprising: a valve body, a control component, a fluid replenishing tube and a first filter; the valve body has a first valve port, a second valve port, a third valve port and a fourth valve port that are interconnected, wherein the first valve port and the third valve port are respectively arranged on both sides of the valve body in a first direction, and the second valve port and the fourth valve port are respectively arranged on both sides of the valve body in a second direction; the control component is arranged on the valve body for controlling the communication between the first valve port, the second valve port, the third valve port and the fourth valve port; one end of the fluid replenishing tube is connected to the first valve port, and the other end is used to be connected to the fluid replenishing tank; the first filter is arranged in the first valve port for filtering the coolant flowing through the first valve port.
[0006] Optionally, the first valve port includes a first extension portion and a second extension portion, the first extension portion extends along the first direction, the second extension portion extends along a third direction, and one end is connected to the first extension portion; the fluid infusion tube includes a third extension portion and a fourth extension portion, the third extension portion extends along the third direction, the fourth extension portion extends along the fourth direction, one end of the third extension portion is connected to the other end of the second extension portion, the other end of the third extension portion is connected to one end of the fourth extension portion, and the other end of the fourth extension portion is used to connect to the fluid infusion tank, and the first filter extends along the third direction and is arranged in the second extension portion.
[0007] Optionally, a drain port is further provided at one end of the first extension portion away from the third valve port.
[0008] Optionally, a mounting member is further included, wherein the second extension portion has a first boss at one end facing away from the first extension portion, and the third extension portion has a second boss at one end facing away from the fourth extension portion, the first boss has a first mounting hole, and the second boss has a second mounting hole, and the mounting member passes through the second mounting hole to the first mounting hole in sequence to connect the second extension portion with the third extension portion.
[0009] Optionally, a first sealing ring is further included, and a first sealing groove is also provided on the first boss. The first sealing ring is arranged on the first sealing ring, and as the mounting member connects the second extension portion with the third extension portion, the second boss can squeeze the first sealing ring to fix the first sealing ring in the first sealing groove.
[0010] Optionally, the first filter includes a base and a filter portion, the inner side wall of the first valve port is provided with a mounting groove, the base is arranged in the mounting groove, and the top surface of the base abuts against the side wall of the infusion tube, and the filter portion is arranged on the side of the base away from the infusion tube and is connected to the infusion tube.
[0011] Optionally, a second sealing ring is further included, and a second sealing groove is opened on the outer side wall of the base, and the second sealing ring is arranged in the second sealing groove.
[0012] In order to achieve the same purpose, the utility model also provides a heat dissipation system, including: a water filling tank, a battery stack, a radiator, a water pump, a first pipe, a second pipe, a third pipe, a fourth pipe and a control valve as described above; the radiator has a first liquid inlet and a first liquid outlet, the battery stack has a second liquid inlet and a second liquid outlet, the first liquid outlet is connected to the second valve port through the first pipe, the fourth valve port is connected to the second liquid inlet through the second pipe, the second liquid outlet is connected to the first liquid inlet through the third pipe, one end of the fourth pipe is connected to the third pipe, and the other end is connected to the third valve port, the water filling tank is connected to the liquid filling pipe, and the water pump is arranged on the second pipe for pumping coolant to the second liquid inlet.
[0013] Optionally, a throttle is further included, which is arranged on the third pipeline and located between the second liquid outlet and the connection between the third pipeline and the fourth pipeline. The throttle is used to regulate the pressure of the third pipeline.
[0014] Optionally, a second filter is further included, and the second filter is arranged on the fourth pipe.
[0015] Compared with the prior art, the control valve and heat dissipation system of the embodiment of the utility model have the following beneficial effects: first, the system integrates the first filter in the first valve port, so that when installing, it is only necessary to connect the liquid replenishing tank and the liquid replenishing pipe, without connecting the first filter first and then connecting the valve body, and when the coolant circulates, the first filter can not only filter the coolant in the liquid replenishing tank, but also filter the coolant flowing from the first liquid outlet to the second liquid inlet. In addition, since the first filter is provided with the first valve port, when the heat dissipation system stops working, the first valve port can be disconnected under the control of the control component, thereby avoiding a pressure difference in the coolant pipeline between the water replenishing tank and the fuel cell stack, thereby avoiding the coolant at the second liquid inlet from penetrating into the chamber of the fuel cell stack. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the main structure of the control valve according to an embodiment of the present utility model;
[0017] Figure 2 This is an assembly diagram of the control valve according to an embodiment of the present utility model;
[0018] Figure 3 It is a front view of the control valve according to an embodiment of the present utility model;
[0019] Figure 4 This is an embodiment of the utility model Figure 3 Cross-section view in the AA direction;
[0020] Figure 5 It is a structural schematic diagram of the heat dissipation system of an embodiment of the present utility model.
[0021] In the figure, 1, control valve; 11, valve body; 111, first valve port; 1111, first extension; 1112, second extension; 1113, drain port; 1114, first boss; 11141, first sealing groove; 1115, mounting groove; 112, second valve port; 113, third valve port; 114, fourth valve port; 12, control assembly; 13, infusion tube; 1131, third extension; 1132, fourth extension; 1133, second Boss; 14, first filter; 141, base; 1411, second sealing groove; 142, filter part; 15, mounting part; 16, first sealing ring; 17, second sealing ring; 2, water supply tank; 3, fuel cell stack; 4, radiator; 5, water pump; 6, first pipe; 7, second pipe; 8, third pipe; 9, fourth pipe; 91, second filter; 10, throttle; X, first direction; Y, second direction; Z, third direction; M, fourth direction. DETAILED DESCRIPTION
[0022] The following embodiments 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", 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 cannot be understood as a limitation on the present invention.
[0024] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.
[0025] like Figure 1 and Figure 2As shown, a control valve 1 of an embodiment of the present invention includes: a valve body 11, a control component 12, a liquid replenishing pipe 13 and a first filter 14; the valve body 11 has a first valve port 111, a second valve port 112, a third valve port 113 and a fourth valve port 114 that are interconnected, wherein the first valve port 111 and the third valve port 113 are respectively arranged on both sides of the valve body 11 in the first direction X, and the second valve port 112 and the fourth valve port 114 are respectively arranged on both sides of the valve body 11 in the second direction Y; the control component 12 is arranged in the valve body 11, for controlling the communication between the first valve port 111, the second valve port 112, the third valve port 113 and the fourth valve port 114; one end of the liquid replenishing pipe 13 is connected to the first valve port 111, and the other end is used to be connected to the liquid replenishing tank; the first filter 14 is arranged in the first valve port 111, for filtering the coolant flowing through the first valve port 111.
[0026] Based on the above scheme, first, the system integrates the first filter 14 into the first valve port 111, so that during installation, it is only necessary to connect the fluid replenishing tank to the fluid replenishing pipe 13, and there is no need to connect the first filter 14 first and then connect the valve body 11. In addition, when the coolant circulates, the first filter 14 can not only filter the coolant in the fluid replenishing tank, but also filter the coolant flowing from the first liquid outlet to the second liquid inlet. In addition, since the first filter 14 is provided with the first valve port 111, when the heat dissipation system stops working, the first valve port 111 can be disconnected under the control of the control component 12, thereby avoiding a pressure difference in the coolant pipeline between the water replenishing tank 2 and the fuel cell stack 3, thereby avoiding the coolant at the second liquid inlet from penetrating into the chamber of the fuel cell stack 3.
[0027] like Figure 2 As shown, in order to improve the filtering effect, the first valve port 111 includes a first extension portion 1111 and a second extension portion 1112, the first extension portion 1111 extends along the first direction X, the second extension portion 1112 extends along the third direction Z, and one end is connected to the first extension portion 1111; the infusion tube 13 includes a third extension portion 1131 and a fourth extension portion 1132, the third extension portion 1131 extends along the third direction Z, the fourth extension portion 1132 extends along the fourth direction M, one end of the third extension portion 1131 is connected to the other end of the second extension portion 1112 One end is connected, the other end of the third extension part 1131 is connected to one end of the fourth extension part 1132, and the other end of the fourth extension part 1132 is used to be connected to the fluid replenishing tank. The first filter 14 extends along the third direction Z and is arranged in the second extension part 1112. By setting the first valve port 111 and the fluid replenishing pipe 13 to be L-shaped, when the fluid replenishing tank transports coolant to the system, it can be more fully filtered by the first filter 14, and the distance of the cooling pipe in the first direction X will not be increased, thereby not affecting the layout of the entire system.
[0028] like Figure 2 As shown, in order to facilitate cleaning of the first valve port 111, a drain port 1113 is further provided at the end of the first extension portion 1111 facing away from the third valve port 113. Before the first filter 14 is removed, the coolant at the connection can be discharged through the drain port 1113 to avoid coolant residue in the first valve port 111.
[0029] like Figure 2 As shown, in order to ensure the connection strength between the second extension portion 1112 and the third extension portion 1131, a mounting member 15 is also included. The second extension portion 1112 has a first boss 1114 at one end away from the first extension portion 1111, and the third extension portion 1131 has a second boss 1133 at one end away from the fourth extension portion 1132. The first boss 1114 has a first mounting hole, and the second boss 1133 has a second mounting hole. The mounting member 15 passes through the second mounting hole to the first mounting hole in sequence to connect the second extension portion 1112 with the third extension portion 1131.
[0030] like Figure 2-Figure 4 As shown, in order to ensure the sealing of the connection between the second extension part 1112 and the third extension part 1131, a first sealing ring 16 is also included, and a first sealing groove 11141 is also opened on the first boss 1114. The first sealing ring 16 is arranged on the first sealing ring 16, and as the mounting member 15 connects the second extension part 1112 with the third extension part 1131, the second boss 1133 can squeeze the first sealing ring 16 to fix the first sealing ring 16 in the first sealing groove 11141.
[0031] like Figure 2-Figure 4 As shown, in order to facilitate the disassembly and assembly of the first filter 14, the first filter 14 includes a base 141 and a filter portion 142. A mounting groove 1115 is provided on the inner side wall of the first valve port 111. The base 141 is arranged in the mounting groove 1115, and the top surface of the base 141 abuts against the side wall of the infusion tube 13. The filter portion 142 is arranged on the side of the base 141 away from the infusion tube 13 and is communicated with the infusion tube 13.
[0032] like Figure 2-Figure 4 As shown, in order to prevent the coolant from seeping into the mounting groove 1115 , a second sealing ring 17 is further included. A second sealing groove 1411 is defined on the outer wall of the base 141 , and the second sealing ring 17 is disposed in the second sealing groove 1411 .
[0033] like Figure 5As shown, a heat dissipation system of an embodiment of the present invention includes: a water replenishing tank 2, a battery stack 3, a radiator 4, a water pump 5, a first pipe 6, a second pipe 7, a third pipe 8, a fourth pipe 9 and the control valve 1 as mentioned above; the radiator 4 has a first liquid inlet and a first liquid outlet, the battery stack 3 has a second liquid inlet and a second liquid outlet, the first liquid outlet is connected to the second valve port 112 through the first pipe 6, the fourth valve port 114 is connected to the second liquid inlet through the second pipe 7, the second liquid outlet is connected to the first liquid inlet through the third pipe 8, one end of the fourth pipe 9 is connected to the third pipe 8, and the other end is connected to the third valve port 113, the water replenishing tank 2 is connected to the liquid replenishing pipe 13, and the water pump 5 is arranged on the second pipe 7 for pumping the coolant to the second liquid inlet.
[0034] like Figure 5 As shown, in order to avoid the coolant at the second liquid outlet from penetrating into the chamber of the fuel cell stack 3 due to the pressure difference between the first liquid inlet and the second liquid outlet, a throttle valve 10 is also included. The throttle valve 10 is provided on the third pipe 8 and is located between the second liquid outlet and the connection between the third pipe 8 and the fourth pipe 9. The throttle valve 10 is used to regulate the pressure of the third pipe 8 to avoid a pressure difference between the first liquid inlet and the second liquid outlet.
[0035] like Figure 5 As shown, in order to prevent impurities from entering the valve body 11 , a second filter 91 is further included. The second filter 91 is provided on the fourth pipe 9 , and the filter in the fourth pipe 9 is filtered by the second filter 91 .
[0036] The working process of this utility model is:
[0037] 1. When the radiator 4 of the cooling system is not working, the control component 12 controls the third valve port 113 and the fourth valve port 114 to be connected, and the coolant circulates between the fourth valve port 114, the second pipe 7, the second liquid inlet, the second liquid outlet, the third pipe 8, the fourth pipe 9 and the third valve port 113;
[0038] 2. When the radiator 4 is working, the control component 12 controls the second valve port 112 and the fourth valve port 114 to communicate, and the coolant circulates between the fourth valve port 114, the second pipe 7, the second liquid inlet, the second liquid outlet, the third pipe 8, the first liquid inlet, the first liquid outlet, the first pipe 6, and the second valve port 112;
[0039] 3. When the liquid replenishing tank is working, the control component 12 controls the first valve port 111 and the fourth valve port 114 to communicate, and the coolant flows from the liquid replenishing tank into the second pipe 7;
[0040] 4. When the cooling system stops working, the control component 12 controls the second valve port 112 and the third valve port 113 to be connected, and the coolant circulates between the third valve port 113, the fourth pipe 9, the third pipe 8, the first liquid inlet, the first liquid outlet, the first pipe 6 and the second valve port 112.
[0041] In summary, the embodiment of the present invention provides a control valve 1 and a heat dissipation system, which first integrates the first filter 14 in the first valve port 111, so that during installation, it is only necessary to connect the liquid replenishing tank to the liquid replenishing pipe 13, and there is no need to connect the first filter 14 first and then connect the valve body 11. In addition, when the coolant circulates, the first filter 14 can not only filter the coolant in the liquid replenishing tank, but also filter the coolant flowing from the first liquid outlet to the second liquid inlet. In addition, since the first filter 14 is provided with the first valve port 111, when the heat dissipation system stops working, the first valve port 111 can be disconnected under the control of the control component 12, thereby avoiding a pressure difference in the coolant pipeline between the water replenishing tank 2 and the fuel cell stack 3, thereby avoiding the coolant at the second liquid inlet from penetrating into the chamber of the fuel cell stack 3.
[0042] 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 replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.
Claims
1. A control valve, characterized in that: include: A valve body, a control assembly, a liquid filling tube and a first filter; The valve body has a first valve port, a second valve port, a third valve port and a fourth valve port which are interconnected, wherein the first valve port and the third valve port are respectively arranged on both sides of the valve body in a first direction, and the second valve port and the fourth valve port are respectively arranged on both sides of the valve body in a second direction; The control assembly is disposed on the valve body and is used to control the communication between the first valve port, the second valve port, the third valve port and the fourth valve port; One end of the liquid infusion tube is connected to the first valve port, and the other end is used to be connected to the liquid infusion tank; The first filter is disposed in the first valve port, and is used for filtering the coolant flowing through the first valve port.
2. The control valve according to claim 1, characterized in that: The first valve port includes a first extension portion and a second extension portion, the first extension portion extends along the first direction, the second extension portion extends along the third direction, and one end is connected to the first extension portion; the infusion tube includes a third extension portion and a fourth extension portion, the third extension portion extends along the third direction, the fourth extension portion extends along the fourth direction, one end of the third extension portion is connected to the other end of the second extension portion, the other end of the third extension portion is connected to one end of the fourth extension portion, and the other end of the fourth extension portion is used to connect to the infusion tank, and the first filter extends along the third direction and is arranged in the second extension portion.
3. The control valve according to claim 2, characterized in that: An end of the first extension portion away from the third valve port is also provided with a liquid discharge port.
4. The control valve according to claim 2, characterized in that: It also includes a mounting member, the second extension portion has a first boss on one end facing away from the first extension portion, the third extension portion has a second boss on one end facing away from the fourth extension portion, the first boss has a first mounting hole, the second boss has a second mounting hole, and the mounting member passes through the second mounting hole into the first mounting hole in sequence to connect the second extension portion with the third extension portion.
5. The control valve according to claim 4, characterized in that: It also includes a first sealing ring. A first sealing groove is also opened on the first boss. The first sealing ring is arranged on the first sealing ring. As the mounting member connects the second extension part with the third extension part, the second boss can squeeze the first sealing ring to fix the first sealing ring in the first sealing groove.
6. The control valve according to claim 1, characterized in that: The first filter includes a base and a filter portion. The inner side wall of the first valve port is provided with a mounting groove. The base is arranged in the mounting groove, and the top surface of the base abuts against the side wall of the infusion tube. The filter portion is arranged on a side of the base away from the infusion tube and is communicated with the infusion tube.
7. The control valve according to claim 6, characterized in that It also includes a second sealing ring. The outer side wall of the base is provided with a second sealing groove, and the second sealing ring is arranged in the second sealing groove.
8. A heat dissipation system, characterized in that: include: A water replenishment tank, a battery stack, a radiator, a water pump, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a control valve as described in claim 1; the radiator has a first liquid inlet and a first liquid outlet, the battery stack has a second liquid inlet and a second liquid outlet, the first liquid outlet is connected to the second valve port through the first pipeline, the fourth valve port is connected to the second liquid inlet through the second pipeline, the second liquid outlet is connected to the first liquid inlet through the third pipeline, one end of the fourth pipeline is connected to the third pipeline, and the other end is connected to the third valve port, the water replenishment tank is connected to the liquid replenishment pipe, and the water pump is arranged on the second pipeline for pumping coolant to the second liquid inlet.
9. The heat dissipation system according to claim 8, characterized in that: It also includes a throttle, which is arranged on the third pipeline and located between the second liquid outlet and the connection between the third pipeline and the fourth pipeline. The throttle is used to adjust the pressure of the third pipeline.
10. The heat dissipation system according to claim 8, characterized in that: It also includes a second filter, which is arranged on the fourth pipe.