Valve mounting structure, fluid control assembly and thermal management system

Abstract

The utility model provides a valve installation structure, a fluid control assembly and a thermal management system, the installation structure comprises a body, the body is provided with at least one inlet flow channel, the inlet flow channel is provided with a flow channel center line, and the inlet flow channel extends along the flow channel center line; the mounting hole is formed in the body and is used for mounting a valve; wherein the mounting hole is internally provided with a mounting center line coinciding with the center line of the valve to be mounted, the inlet flow channel is communicated with the mounting hole, and the number of intersection points of the mounting center line of the mounting hole and the flow channel center line of the inlet flow channel is zero. The inlet flow channel is arranged in the body, and the flow channel center line of the inlet flow channel and the mounting center line of the mounting hole are eccentrically arranged and are not intersected, so that when a medium flows in the inlet flow channel, the center line of the valve is not directly impacted, the flow resistance can be effectively reduced, and the scouring of the medium to the inner wall of the valve is also relieved; and the service life of the valve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile thermal management system, especially relates to a mounting structure of valve, fluid control assembly and thermal management system. BACKGROUND

[0002] The refrigerant circuit flow channel plate of the new energy automobile thermal management module needs to integrate multiple expansion valves and stop valves, the expansion valve produces throttling and pressure reduction on the refrigerant in the circuit, and is an indispensable part in the refrigerating system, and the stop valve makes the refrigerant flow in the specified flow channel according to different working modes through the valve switch, so that different functions are realized.

[0003] In the traditional refrigerant flow channel plate design, when the flow channel passes through the expansion valve and the stop valve, the center of the flow channel and the inlet center of the valve are opposite, which can cause the refrigerant to directly impact the valve core, increase the flow resistance, and affect the service life of the valve core.

[0004] In the increasingly complex refrigerant circuit topology, the refrigerant circuit flow channel plate needs to integrate more and more expansion valves and stop valves. Therefore, the number of flow channels in the flow channel plate increases, which leads to the increase of the volume of the flow channel plate, the increase of the processing difficulty, is not conducive to the miniaturization and lightweight design of the flow channel plate, and increases the manufacturing cost. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a mounting structure of valve, fluid control assembly and thermal management system, which is used to solve the problems that the center axis of the valve is opposite to the center of the flow channel, the medium directly impacts the valve core, the flow resistance is large, and the service life of the valve core is affected.

[0006] To achieve the above-mentioned purpose and other related purposes, on one hand, the utility model provides a mounting structure of valve, which comprises:

[0007] A body is provided with at least one inlet flow channel, the inlet flow channel has a flow channel center line, and the inlet flow channel extends along the flow channel center line;

[0008] A mounting hole is arranged on the body, and the mounting hole is used for mounting the valve;

[0009] Among them, the mounting hole has a mounting center line coinciding with the center line of the valve to be installed, the inlet flow channel communicates with the mounting hole, and the number of intersection points of the mounting center line of the mounting hole and the flow channel center line of the inlet flow channel is zero.

[0010] Further, the mounting hole and the inlet flow channel communicate through a communication hole, and the communication hole is formed by the intersection of the mounting hole and the inlet flow channel.

[0011] Further, the flow area of the communication hole is greater than or equal to the flow area of the inlet flow channel.

[0012] Further, the body is provided with a plurality of mounting holes, and the inlet flow channel is in communication with each mounting hole.

[0013] Further, each mounting hole is sequentially arranged along the extension direction of the inlet flow channel.

[0014] Further, the mounting center line of the mounting hole is perpendicular to the flow channel center line of the inlet flow channel.

[0015] Further, the inlet flow channel is a straight pipe.

[0016] Further, the body is further provided with an outlet flow channel, and the outlet flow channel is in communication with the mounting hole.

[0017] In another aspect, the application further provides a fluid control assembly, comprising the mounting structure and a valve mounted in the mounting hole.

[0018] In another aspect, the application further provides a thermal management system, comprising the fluid control assembly.

[0019] As described above, the application has the following beneficial effects: the application arranges the flow channel center line of the inlet flow channel and the mounting center line of the mounting hole in eccentric dislocation, so that the intersection number of the mounting center line of the mounting hole and the flow channel center line of the inlet flow channel is zero, so that when the medium flows in the inlet flow channel, the valve core of the valve is not directly impacted, the flow resistance is effectively reduced, the medium scouring on the inner wall of the valve is reduced, and the service life of the valve is increased. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the expansion valve;

[0021] Figure 2 It is a sectional view schematic diagram of the embodiment of the application Figure 1 ;

[0022] Figure 3 It is a sectional view schematic diagram of the embodiment of the application Figure 2 ;

[0023] Figure 4 It is a sectional view schematic diagram of the embodiment of the application Figure 3 .

[0024] PART NUMBER EXPLANATION

[0025] 1-coil; 2-valve body; 21-refrigerant inlet; 22-refrigerant outlet; 31-outer leakage sealing ring; 32-inner leakage sealing ring, 4-body, 41-inlet flow channel, 42-outlet flow channel, 43-mounting hole, 44-communication hole, 5-first valve member, 6-second valve member. DETAILED DESCRIPTION

[0026] The implementation of the present application will be described in detail by specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0027] It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the specification are only used to understand and read the content disclosed in the specification by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0028] In order to describe the present application in detail, first, the mounting structure of the valve member, the fluid control assembly and the thermal management system provided by the present application are described in detail.

[0029] As shown in Figures 2 to 4 The present application provides a mounting structure of a valve member, mainly used in the refrigerant circuit of a vehicle thermal management system. The mounting structure of the valve member includes a body 4, and at least one inlet flow channel 41 and an outlet flow channel 42 are arranged on the body 4. The outlet flow channel 42 is in communication with the inlet flow channel 41 through a mounting hole 43. The inlet flow channel 41 has a flow channel center line, and the inlet flow channel 41 extends along the flow channel center line. The flow channel center line refers to an imaginary center line along the main flow direction of a fluid passage, which can also be understood as the geometric center line of the inlet flow channel 41. For example, when the inlet flow channel 41 is circular, the flow channel center line is the axis, and when the inlet flow channel 41 is rectangular, the flow channel center line is the central axis of the rectangle.

[0030] The shape of the inlet flow channel 41 can be various shapes, and in some embodiments, the inlet flow channel 41 is a circular flow channel. The circular flow channel has equal distances from the center of the circle to each point on the circumference, so that the flow rate distribution is relatively more uniform when the fluid flows in the flow channel. Compared with other non-circular flow channels, such as square or rectangular flow channels, the circular flow channel can effectively reduce the local flow rate difference caused by the shape change of the flow channel wall. For example, when the liquid medium flows through the circular flow channel, the shear stress inside the fluid is relatively small due to the similar flow rate of each point, thereby reducing the energy loss caused by internal friction.

[0031] The circular flow channel can uniformly disperse the pressure on the flow channel wall when subjected to internal fluid pressure. This uniform pressure distribution characteristic makes the circular flow channel have better structural stability under high pressure conditions. Compared with a square flow channel, the corners of the square flow channel are prone to stress concentration and are more likely to break or deform under high pressure. The uniform stress characteristic of the circular flow channel makes it better adapt to the working requirements under various pressure conditions and reduces the risk of flow channel damage caused by pressure.

[0032] The flow resistance in the circular flow channel is relatively small. The resistance of fluid in the pipeline is related to the diameter, roughness of the pipeline, and the flow rate, viscosity of the fluid, etc. For a circular flow channel, the relatively smooth inner wall surface and uniform geometry help to reduce the frictional resistance between the fluid and the wall. Under the same flow rate and fluid properties, the circular flow channel can provide a smoother flow path than other shape flow channels with the same cross-sectional area, reducing energy loss during fluid flow.

[0033] The flow characteristics of the circular flow channel at the bend are also better than those of other shape flow channels. When the fluid flows through the bend, due to the effect of inertia, the flow rate of the fluid on the outside of the bend will increase, while on the inside it will decrease, thereby increasing the flow resistance. The circular flow channel can better guide the flow direction of the fluid in the bend design, so that the energy loss of the fluid at the bend is minimized.

[0034] In some embodiments, the inlet flow channel 41 is a straight pipeline, which is convenient to process and can also be produced by pressure casting core-pulling process, reducing the processing time of the inlet flow channel 41. The flow channel center line of the circular inlet flow channel 41 is the axis of the circular flow channel. The body 4 is made of pressure casting, and the inlet flow channel 41 is designed as a straight pipeline. Many parts are integrated on the body 4. For the valve parts in parallel in the topological principle, a straight pipeline is used to connect all the valve parts, which can save space, reduce machining, and arrange more compactly.

[0035] The mounting hole 43 is arranged on the body 4, and the valve member is mounted on the body 4 through the mounting hole 43. The mounting hole 43 has a mounting center line coinciding with the center line of the valve member to be mounted, the inlet flow channel 41 communicates with the mounting hole 43, and the number of intersection points of the mounting center line of the mounting hole 43 and the flow channel center line of the inlet flow channel 41 is zero.

[0036] In the prior art, the mounting hole 43 is arranged on the inlet flow channel 41, and the mounting center line of the mounting hole 43 intersects with the flow channel center line of the inlet flow channel 41. The medium directly impacts the valve core after entering the inlet flow channel 41, so that the impact force on the valve core is large, which affects the service life of the valve core. In the embodiment, the flow channel center line of the inlet flow channel 41 and the mounting center line of the mounting hole 43 are arranged in an eccentric offset manner, so that the number of intersection points of the two center lines is zero. When the medium flows in the inlet flow channel 41 and passes through the valve member, the medium will not directly impact the valve core of the valve member. Since the medium directly impacts the valve core is avoided, the local resistance in the flow process of the medium can be effectively reduced. If the medium directly impacts the valve core, it may cause a sharp change in flow state, forming complex flow states such as turbulence and vortex. The design of the present application avoids such problems. The eccentric arrangement enables the medium to flow more smoothly when passing through the valve member, greatly improving the flow velocity distribution; the more uniform flow velocity distribution not only reduces the shear stress generated by the large difference in flow velocity inside the fluid, but also reduces the erosion of the fluid to the inner wall of the valve member, prolonging the service life of the valve member.

[0037] The mounting hole 43 communicates with the inlet flow channel 41 through the communication hole 44. In some embodiments, one end of the communication hole 44 communicates with the inlet flow channel 41, and the other end communicates with the mounting hole 43. However, in order to facilitate processing, the communication hole 44 in the present embodiment is formed by the intersection of the mounting hole 43 and the inlet flow channel 41, rather than separately processing a communication hole 44. The mounting hole 43 is arranged downward from the side of the inlet flow channel 41, and the mounting hole 43 intersects with the side of the inlet flow channel 41, so that the communication hole 44 is naturally formed at the intersection of the two.

[0038] The mounting hole 43 is processed from top to bottom, and the mounting center line of the mounting hole 43 is vertically arranged with the body 4. Generally, the inlet flow channel 41 is also horizontally arranged, so that the mounting center line of the mounting hole 43 is perpendicular to the flow channel center line of the inlet flow channel 41. In the present embodiment, the mounting center line of the mounting hole 43 is perpendicular to the flow channel center line of the inlet flow channel 41, that is, when the mounting center line of the mounting hole 43 is projected onto the flow channel center line of the inlet flow channel 41, the two center lines are perpendicular.

[0039] The communication hole 44 is formed by the intersection of the mounting hole 43 and the inlet flow channel 41, which utilizes the layout of the mounting hole 43 itself to realize communication with the inlet flow channel 41, without the need for additional separate complex communication structure, simplifying the overall design and manufacturing process. Since the communication hole 44 is naturally formed by the intersection of the mounting hole 43 and the inlet flow channel 41, the shape and size precision requirements of the communication hole 44 itself are relatively not so strict. To some extent, as long as the machining precision of the mounting hole 43 and the inlet flow channel 41 meets the requirements, the communication effect of the communication hole 44 can be guaranteed. If the communication hole 44 is machined separately, higher machining precision may be required to ensure its precise communication with the inlet flow channel 41 and the mounting hole 43, otherwise problems such as poor communication and leakage may occur.

[0040] The flow area of the communication hole 44 is greater than or equal to the flow area of the inlet flow channel 41, which allows the fluid in the inlet flow channel 41 to pass through the communication hole 44 without any obstruction. The flow area of the communication hole 44 is not less than the flow area of the inlet flow channel 41, which will not cause the pressure in the inlet flow channel 41 to increase due to a decrease in flow area. During the flow of fluid from the inlet flow channel 41 to the communication hole 44, if the flow area of the communication hole 44 is less than the flow area of the inlet flow channel 41, the flow rate changes dramatically and the flow line is disordered when the fluid passes through the narrow communication hole 44, forming eddies and backflow, which can easily cause turbulent flow, increasing the resistance of the fluid. Local pressure increase and turbulence can cause fluid impact and vibration, and also cause greater erosion and wear on the walls of the communication hole 44 and the inlet flow channel 41. Over a long period of operation, it may cause damage to the communication hole 44 and the inlet flow channel 41, such as wall thinning, cracking, etc., increasing the risk of leakage, reducing the reliability and service life of the system.

[0041] Similarly, the flow area of the outlet flow channel 42 is also greater than or equal to the flow area of the inlet flow channel 41. When the flow area of the outlet flow channel 42 is greater than or equal to the flow area of the inlet flow channel 41, it provides more spacious flow space for the fluid, allowing it to pass through smoothly without excessive obstruction. A larger flow area of the outlet flow channel 42 can effectively reduce the resistance of the fluid during flow.

[0042] The body 4 is provided with a plurality of mounting holes 43, the mounting center line of each mounting hole 43 is eccentrically and staggeringly arranged with the flow channel center line of the inlet flow channel 41, and the inlet flow channel 41 is communicated with each mounting hole 43 respectively. If the center line of the valve and the flow channel center line of the inlet flow channel 41 intersect, the number of inlet flow channels 41 to be processed is equal to the number of valves to be installed. In the embodiment, the mounting center line of each mounting hole 43 is eccentrically and staggeringly arranged with the flow channel center line of the inlet flow channel 41, a plurality of valves can be arranged on the same inlet flow channel 41, thereby realizing parallel connection between the plurality of valves, which can reduce the number of inlet flow channels 41, greatly simplify the pipeline layout, arrange the valves more compactly, and save a large amount of space; meanwhile, the machining process is reduced, the size of the mounting structure is also reduced, and the cost is saved. If the inlet flow channel 41 is a straight pipeline, the machining is more simplified.

[0043] The plurality of mounting holes 43 are arranged in sequence along the extension direction of the inlet flow channel 41, and two valves are generally not installed at the same position in the extension direction of the inlet flow channel 41. The plurality of mounting holes 43 can be arranged on the same side, as shown in the figure, the first valve 5 and the second valve 6 are arranged on the same side of the inlet flow channel 41 with a certain interval. Figure 3 The plurality of mounting holes 43 can be arranged on the same side, as shown in the figure, the first valve 5 and the second valve 6 are arranged on the same side of the inlet flow channel 41 with a certain interval. The plurality of valves can also be arranged on the left and right sides of the extension direction of the inlet flow channel 41 respectively. When the mounting holes 43 are arranged on the same side, it is convenient for centralized management and maintenance, and the appearance of the system is more neat and compact, and space can also be effectively saved, which is convenient for operators to install and debug. When the mounting holes 43 are arranged on the left and right sides of the extension direction of the inlet flow channel 41 respectively, more complex fluid distribution and control functions can be realized. The plurality of mounting holes 43 are arranged in sequence along the extension direction of the inlet flow channel 41, whether on the same side or on the left and right sides, space can be effectively utilized, and the compactness of the system is improved. Compared with the traditional decentralized layout, the centralized layout can reduce the length of the pipeline and the connecting components, and reduce the volume and weight of the system.

[0044] The eccentric distance between the mounting center line of each mounting hole 43 and the flow channel center line of the inlet flow channel 41 can be the same or different. The sizes of the mounting holes 43 can be the same or different. In the prior art, different sizes of valves are installed on the mounting structure, and different flow channels are arranged to enable the valves to communicate with the inlet flow channel 41. In the embodiment, different sizes of valves can be installed on the same inlet flow channel 41. Each valve is connected to a different circuit, and by reasonably adjusting the eccentric distance of each mounting hole 43, the flow distribution and pressure balance between different cooling circuits can be realized.

[0045] The shape of the mounting hole 43 matches the valve to be installed, as shown in the figure. Figure 1As shown, the expansion valve includes a coil 1, a valve body 2, an outer leakage sealing ring 31, and an inner leakage sealing ring 32. The coil 1 is connected with an external controller to control the expansion valve. A refrigerant inlet 21 is arranged in a middle region of the valve body 2 and surrounds the valve body 2. A refrigerant outlet 22 is arranged at a lower portion of the valve body 2. Figure 2 As shown, the expansion valve is installed on the mounting structure. The mounting hole 43 includes a first section, a second section, and a third section with gradually decreasing inner diameters from top to bottom. The refrigerant inlet 21 is arranged in the second section. The inlet flow channel 41 can be machined along a first direction, and then the mounting hole 43 can be machined along a second direction. Figure 2 As shown, the first direction is a front-to-back direction, and the second direction is an up-to-down direction. Figure 2 As shown, the first direction is a front-to-back direction, and the second direction is an up-to-down direction. The mounting hole 43 is first machined to the first section, and then the second section and the third section are machined. Steps are arranged at the connection between the first section and the second section and at the connection between the second section and the third section. Figure 4 As shown, the communication hole 44 is arranged in the second section only. Therefore, the lower portion of the communication hole 44 is arranged at the connection between the second section and the third section. The lower portion of the communication hole 44 is a flat horizontal surface. The communication hole 44 does not affect the outer leakage sealing ring 31 and the inner leakage sealing ring 32.

[0046] In the vehicle thermal management system, the valve can be an expansion valve, a stop valve, or other valves.

[0047] In another aspect, the embodiment further provides a fluid control assembly, which includes the mounting structure and the valve installed in the mounting hole 43. The inlet of the valve is communicated with the inlet flow channel 41, and the outlet of the valve is communicated with the outlet flow channel 42.

[0048] In another aspect, the embodiment further provides a thermal management system, which includes the fluid control assembly. When used in the refrigerant circuit of the vehicle thermal management system, the body 4 can be used as a refrigerant flow channel plate.

[0049] The above embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the utility model should be covered by the claims of the utility model.

Claims

1. A valve mounting structure, characterized in that, include: The body has at least one inlet channel, the inlet channel has a center line, and the inlet channel extends along the center line; Mounting holes are provided on the body and are used to mount valve components; The mounting hole has a mounting center line that coincides with the center line of the valve to be installed. The inlet flow channel is connected to the mounting hole, and the number of intersections between the mounting center line of the mounting hole and the flow channel center line of the inlet flow channel is zero.

2. The mounting structure according to claim 1, characterized by The mounting hole is connected to the inlet channel through a connecting hole, which is formed by the intersection of the mounting hole and the inlet channel.

3. The installation structure according to claim 2, characterized in that, The flow area of ​​the connecting hole is greater than or equal to the flow area of ​​the inlet channel.

4. The installation structure according to claim 1, characterized in that, The main body is provided with multiple mounting holes, and the inlet flow channel is connected to each of the mounting holes respectively.

5. The installation structure according to claim 4, characterized in that, Each of the mounting holes is arranged sequentially along the extension direction of the inlet flow channel.

6. The installation structure according to claim 1, characterized in that, The mounting center line of the mounting hole is perpendicular to the flow channel center line of the inlet flow channel.

7. The installation structure according to claim 1, characterized in that, The inlet channel is a straight pipe.

8. The mounting structure according to any one of claims 1 to 7, characterized in that, The body is also provided with an outlet channel, which is connected to the mounting hole.

9. A fluid control component, characterized in that, The device includes the mounting structure as described in any one of claims 1 to 8 and a valve installed in the mounting hole; the inlet of the valve is connected to the inlet flow channel, and the outlet of the valve is connected to the outlet flow channel.

10. A thermal management system, characterized in that, Includes the fluid control component as described in claim 9.

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