Multi-runner communication valve assembly and thermal management system

Abstract

The utility model discloses a multi-runner communicating valve assembly and a heat management system. The multi-runner communicating valve assembly comprises a valve body, and the valve body is sequentially provided with an upper-layer runner and a lower-layer runner in the vertical direction; the upper-layer flow channel is composed of a first flow channel and a second flow channel, the first flow channel is arranged on the upper portion of the valve body in the horizontal direction, and the second flow channel communicates with the first flow channel; the lower-layer flow channel is composed of a third flow channel, a fourth flow channel and a fifth flow channel, and the fourth flow channel and the fifth flow channel are communicated with the third flow channel. According to the multi-flow-channel communicating valve assembly, the upper-layer flow channel and the lower-layer flow channel which are independent of each other are designed, so that the structure of a refrigerant loop of an automobile is effectively simplified, and the structure of a thermal management system of the whole automobile is simplified; according to the utility model, a plurality of stop valves and expansion valves are integrated on the valve body, and the integrated valve body structure is adopted, so that the heat management of the whole vehicle can be realized only by controlling and switching the state of each valve of the valve body, the purpose of simplifying a heat management system is realized, and meanwhile, the heat management requirement of the whole vehicle is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts and relates to a multi-channel connecting valve component and a thermal management system. Background Art

[0002] Today, the thermal management of new energy vehicles mainly includes automotive air conditioning, battery thermal management, motor and electronic control thermal management. To meet these controls, it is necessary to add many pipes, components or control valves to the air-conditioning system to achieve thermal management of the entire vehicle, which makes the thermal management system of the entire vehicle complicated and redundant.

[0003] At the same time, in order to control multiple components or control valves to achieve the purpose of thermal management of the entire vehicle, many integrated modules need to be set up accordingly. The integrated modules are relatively heavy, expensive, complex to control, complex in structure, have poor product stability, and complex in production process, which also makes the thermal management system of the entire vehicle more complicated.

[0004] In order to solve the above problems, a device is needed to simplify the thermal management system and meet the thermal management requirements of the entire vehicle. Utility Model Content

[0005] In view of this, the utility model provides a multi-channel connecting valve assembly and a thermal management system. The multi-channel connecting valve assembly integrates multiple channels and is applied to the refrigerant circuit of automobile thermal management, which effectively reduces the number of air-conditioning pipelines in the system and saves the layout space of the entire vehicle. At the same time, the multi-channel connecting valve assembly integrates multiple stop valves and expansion valves, which can further simplify the structure of the refrigerant circuit of the thermal management system, thereby simplifying the structure of the thermal management system of the entire vehicle.

[0006] The utility model discloses a multi-channel connecting valve assembly, comprising a valve body, wherein the valve body is sequentially provided with an upper channel and a lower channel along a vertical direction;

[0007] The upper flow channel includes a first flow channel and a second flow channel, the first flow channel is arranged at the upper part of the valve body along the horizontal direction, and the second flow channel is connected to the first flow channel;

[0008] The lower flow channel includes a third flow channel, a fourth flow channel and a fifth flow channel, and the fourth flow channel and the fifth flow channel are respectively connected to the third flow channel.

[0009] Furthermore, it also includes an expansion valve, the valve body is provided with a connecting channel, the third flow channel and the fourth flow channel are connected through the connecting channel, the expansion valve is installed in the connecting channel, and the expansion valve is used to connect the third flow channel and the fourth flow channel or cut off the connection between the third flow channel and the fourth flow channel.

[0010] Furthermore, the third flow channel is located above the fourth flow channel in the vertical direction; and the connecting channel is vertically arranged and connects the third flow channel and the fourth flow channel.

[0011] Furthermore, it also includes a plurality of connecting ports arranged on the valve body, the plurality of connecting ports include a first connecting port, a second connecting port and a third connecting port, the valve body has a front end face and a rear end face, the first flow channel is horizontally penetrated from back to front, the first flow channel forms the first connecting port and the second connecting port for fluid to flow into or out of the first flow channel at the rear end face and the front end face of the valve body respectively, one end of the second flow channel is connected to the first flow channel, and the other end extends to the front end face of the valve body and forms a third connecting port on the front end face for fluid to flow into or out of the second flow channel.

[0012] Furthermore, the multiple connecting ports also include a fourth connecting port, a fifth connecting port and a sixth connecting port, the third flow channel extends from the valve body to the rear end face of the valve body and forms a fourth connecting port on the rear end face of the valve body for fluid to flow into or out of the third flow channel, the fourth flow channel extends from the valve body to the front end face of the valve body and forms a fifth connecting port on the front end face of the valve body for fluid to flow into or out of the fourth flow channel, the fifth flow channel extends from the valve body to the front end face of the valve body and forms a sixth connecting port on the front end face of the valve body for fluid to flow into or out of the fifth flow channel.

[0013] Further, it also includes a first stop valve, a second stop valve, a third stop valve and a fourth stop valve;

[0014] The first stop valve is installed on the valve body and is located near the second communication port, and the first stop valve is used to control the on and off of the first flow channel;

[0015] The second stop valve is installed on the valve body and is located near the third communication port, and the second stop valve is used to control the on and off of the second flow channel;

[0016] The third stop valve is installed on the valve body and is located near the fifth connecting port, and the third stop valve is used to control the on-off of the fourth flow channel;

[0017] The fourth stop valve is installed on the valve body and is located near the sixth communication port. The fourth stop valve is used to control the on-off of the fifth flow channel.

[0018] Furthermore, the expansion valve comprises an expansion valve core and a temperature-sensitive package, the connecting passage is vertically penetrated, and the temperature-sensitive package and the expansion valve core are sequentially arranged in the connecting passage from top to bottom.

[0019] The utility model also discloses a thermal management system, which is equipped with the aforementioned multi-channel communication valve assembly.

[0020] Beneficial effects of the utility model:

[0021] The utility model discloses a multi-channel connecting valve assembly and a thermal management system. By designing mutually independent upper and lower flow channels, the structure of the automobile's refrigerant circuit is effectively simplified, thereby simplifying the structure of the thermal management system of the entire vehicle. By integrating multiple stop valves and expansion valves on the valve body, the integrated valve body structure only needs to control and switch the states of the valves of the valve body to control the thermal management of the entire vehicle, thereby achieving the purpose of simplifying the thermal management system and meeting the thermal management needs of the entire vehicle. The utility model has a simple overall structure, is easy to process, and has good product stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the utility model;

[0023] Figure 2 It is a rear view of the utility model;

[0024] Figure 3 It is a top view of the utility model;

[0025] Figure 4 for Figure 1 Sectional view at AA in the middle;

[0026] Figure 5 for Figure 1 Sectional view at the middle BB;

[0027] Figure 6 for Figure 1 Sectional view at CC;

[0028] Figure 7 This is a flow diagram of the medium in the upper flow channel in the embodiment of the utility model when the expansion valve is open;

[0029] Figure 8 This is a flow diagram of the medium in the lower flow channel in the embodiment of the utility model when the expansion valve is open;

[0030] Fig. 9 This is a flow diagram of the medium in the upper flow channel in the embodiment of the utility model when the expansion valve is closed;

[0031] Fig.10 This is a flow diagram of the medium in the lower flow channel when the expansion valve is closed in an embodiment of the present utility model. DETAILED DESCRIPTION

[0032] It should be noted that in the description of this specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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. The valve body in this embodiment is a hexahedron. In the present invention, for the convenience of description, the side of the valve body connected to the evaporator is defined as the rear side, that is, Figure 2 The view is a rear view, which is understandable to technicians in this technical field and will not be elaborated here.

[0033] As shown in the figure, the utility model discloses a multi-channel connecting valve assembly, including a valve body 1, wherein the valve body 1 is sequentially provided with an upper channel and a lower channel in the vertical direction; the upper channel includes a first channel 14 and a second channel 15, wherein the first channel 14 is horizontally provided at the upper part of the valve body 1, and the second channel 15 is connected to the first channel 14; the lower channel includes a third channel 16, a fourth channel 17 and a fifth channel 18, wherein the fourth channel 17 and the fifth channel 18 are respectively connected to the third channel 16. In this embodiment, by providing two independent channels, the structure of the original multi-pipe and multi-valve refrigerant circuit is replaced, thereby effectively simplifying the structure of the refrigerant circuit of the automobile, and thus simplifying the structure of the thermal management system of the entire vehicle.

[0034] In this embodiment, an expansion valve is also included. A connecting channel is provided in the valve body 1. The third flow channel 16 and the fourth flow channel 17 are connected through the connecting channel. The expansion valve is installed in the connecting channel. The expansion valve is used to connect the third flow channel 16 and the fourth flow channel 17 or cut off the connection between the third flow channel 16 and the fourth flow channel 17. The expansion valve in this embodiment is a thermal expansion valve. By setting the temperature, the opening and closing and the opening degree of the thermal expansion valve are controlled to realize the control of the flow channel on and off. Further, the flow size of the corresponding flow channel can also be controlled.

[0035] In this embodiment, the third flow channel 16 is located above the fourth flow channel 17 in the vertical direction, that is, in terms of height, the third flow channel 16 is higher than the fourth flow channel 17; the connecting channel is vertically arranged and connects the third flow channel 16 and the fourth flow channel 17. The flow channels at two heights with the vertical connecting channel can facilitate the installation of the expansion valve, and also facilitate the expansion valve to control the opening and closing of the third flow channel 16 and the fourth flow channel 17 and adjust the flow rate.

[0036] In this embodiment, it also includes a plurality of connecting ports arranged on the valve body 1. The arrangement of the connecting ports is to facilitate the connection of the valve body 1 of this embodiment to the refrigerant circuit of the whole vehicle. The connecting ports can be directly processed on the valve body 1, such as processing a threaded hole on the valve body 1 as a connecting port to connect to the flow channel, or directly use a connecting joint, etc. This connection method is understandable to technicians in this technical field and is not repeated here. In the embodiment, the plurality of connecting ports at least include a first connecting port 2, a second connecting port 3 and a third connecting port 4. The valve body 1 has a front end face and a rear end face. The first flow channel 14 is arranged to pass through from back to front in the horizontal direction. The first flow channel 14 forms a first connecting port 2 and a second connecting port 3 for fluid to flow into or out of the first flow channel 14 on the rear end face and the front end face of the valve body 1, respectively. One end of the second flow channel 15 is connected to the first flow channel 14, and the other end extends to the front end face of the valve body 1 and forms a third connecting port 4 on the front end face for fluid to flow into or out of the second flow channel 15. In this embodiment, the plurality of connecting ports further include a fourth connecting port 5, a fifth connecting port 6 and a sixth connecting port 7. The third flow channel 16 extends from the inside of the valve body 1 to the rear end face of the valve body 1 and forms a fourth connecting port 5 on the rear end face of the valve body 1 for fluid to flow into or out of the third flow channel 16. The fourth flow channel 17 extends from the inside of the valve body 1 to the front end face of the valve body 1 and forms a fifth connecting port 6 on the front end face of the valve body 1 for fluid to flow into or out of the fourth flow channel 17. The fifth flow channel 18 extends from the inside of the valve body 1 to the front end face of the valve body 1 and forms a sixth connecting port 7 on the front end face of the valve body 1 for fluid to flow into or out of the fifth flow channel 18. As shown in the figure, the valve body 1 is a hexahedral structure. The various flow channels of this embodiment are actually directly processed on the valve body 1. For example, the first flow channel 14 is a through channel directly processed from the rear end face to the front end face by mechanical processing, and two holes are formed on the rear end face and the front end face respectively. The hole on the rear end face is the first connecting port 2, and the hole on the front end face is the second connecting port 3; the second flow channel 15 is a non-through channel formed by machining from the front end face to the inside of the valve body 1, and the hole formed on the front end face by machining the second flow channel 15 is the third connecting port 4; in this embodiment, in order to facilitate machining and connection, the second flow channel 15 is parallel to the first flow channel 14, and the connection between the second flow channel 15 and the first flow channel 14 is achieved by machining an intermediate channel 19, and the intermediate channel 19 is perpendicular to the first flow channel 14 and also perpendicular to the second flow channel 15. Such a setting is more convenient for machining, such as Figure 5As shown, the middle channel 19 is formed by machining from the right side of the valve body 1 into the valve body, and is a blind hole channel with only one opening. At the same time, in order to ensure the sealing of the flow channel, a plugging cover 20 is provided to block the opening of the middle channel 19. This is understandable to those skilled in the art and will not be described in detail here. Similarly, the third flow channel 16, the fourth flow channel 17 and the fifth flow channel 18 are also obtained by machining at corresponding positions in the same manner, and the formation of the fourth connecting port 5, the fifth connecting port 6 and the sixth connecting port 7 is also the same as the first connecting port 2, etc., which will not be described in detail here. In this embodiment, the third flow channel 16, the fourth flow channel 17 and the fifth flow channel 18 are also parallel to each other, and the third flow channel 16 and the fifth flow channel 18 are at the same height. The connection between the above two is also the same as the connection between the first flow channel and the second flow channel 15. An middle channel 19 is also provided between the third flow channel 16 and the fifth flow channel 18, and a plugging cover 20 is provided accordingly. This is understandable to those skilled in the art and will not be described in detail here.

[0037] In this embodiment, a first stop valve 8, a second stop valve 9, a third stop valve 10 and a fourth stop valve 11 are also included; in this embodiment, only four stop valves need to be controlled to control the flow direction of the refrigerant medium, thereby achieving control of the thermal management of the entire vehicle.

[0038] The first stop valve 8 is installed on the valve body 1 and is located near the second connecting port 3. The first stop valve 8 is used to control the on-off of the first flow channel 14; the second stop valve 9 is installed on the valve body 1 and is located near the third connecting port 4. The second stop valve 9 is used to control the on-off of the second flow channel 15; the third stop valve 10 is installed on the valve body 1 and is located near the fifth connecting port 6. The third stop valve 10 is used to control the on-off of the fourth flow channel 17; the fourth stop valve 11 is installed on the valve body 1 and is located near the sixth connecting port 7. The fourth stop valve 11 is used to control the on-off of the fifth flow channel 18. As shown in the figure, the four stop valves are installed by opening channels on the side walls at corresponding positions of the valve body 1. During installation, the valve core of the corresponding stop valve is inserted into the corresponding flow channel, and the on-off of the flow channel is controlled by the valve core. Taking the first stop valve 8 as an example, Figure 5 As shown, after the first stop valve 8 is installed, the valve core is inserted into the first flow channel 14 and close to the second communication port 3. The first stop valve 8 can be opened, and the fluid can flow in from the first flow port and flow out from the second flow port. After the first stop valve 8 is closed, the fluid cannot flow out from the second flow port. The installation form of the second stop valve 9, the third stop valve 10 and the fourth stop valve 11 is the same as the first stop valve 8, which is understandable to those skilled in the art and will not be repeated here.

[0039] In this embodiment, the expansion valve includes an expansion valve core 13 and a temperature-sensitive package 12, and the connecting channel is arranged through in the vertical direction. The temperature-sensitive package 12 and the expansion valve core 13 are arranged in the connecting channel from top to bottom in sequence. In this embodiment, in order to facilitate processing, the connecting channel is designed to be vertically through, and the bottom of the temperature-sensitive package 12 is a telescopic push rod that can be controlled by temperature. The push rod is used to push the valve core to adjust the opening and closing or the opening of the valve core. The temperature-sensitive package 12 is inserted and installed in the connecting channel from top to bottom, and the expansion valve core 13 is inserted and installed in the connecting channel from bottom to top. The expansion valve core 13 is located at the lower part of the connecting channel, and the temperature-sensitive package 12 occupies the middle and upper parts of the connecting channel; and the connecting channel is processed into a step-like structure, and the diameters of each section are different. After the temperature-sensitive package 12 is installed, the lower part of the connecting channel is independent and not connected with the middle and upper parts. This setting is to ensure that the upper flow channel and the lower flow channel are independent of each other, and the two flow channels will not cross due to the existence of the connecting channel. The working principle and working mode of the thermal expansion valve are the application of the existing technology here, so they are not repeated here.

[0040] The embodiment of the utility model also discloses a thermal management system, which is equipped with the aforementioned multi-channel communication valve assembly.

[0041] The present invention is further described below in conjunction with the refrigerant circuit of an automobile. The rear end face of the valve body 1 is provided with a mounting hole to provide a mounting position for the installation of the evaporator. The first connecting port 2 is connected to the outlet of the evaporator, the fourth connecting port 5 is connected to the outlet of the evaporator, the second connecting port is connected to the low-pressure pipe at the inlet of the compressor of the automobile, the third connecting port 4 is connected to the inlet of the coaxial pipe (for heat exchange of the battery panel and waste heat recovery), the fifth connecting port 6 is connected to the outlet of the condenser, and the sixth connecting port 7 is connected to the outlet high-pressure pipe of the compressor.

[0042] The expansion valve is controlled by the control system to open the first stop valve 8 and the third stop valve 10, and close the second stop valve 9 and the fourth stop valve 11. At this time, the refrigerant enters the valve body 1 from the first connecting port 2, and flows out to the compressor through the second connecting port 3 for subsequent circulation. The medium flows as follows: Figure 7 As shown, after the cycle is completed, the refrigerant flows into the valve body 1 through the fifth connecting port 6, and then flows back to the evaporator through the fourth connecting port 5. The medium flows as shown in the figure. Figure 8 This cycle is a refrigeration cycle.

[0043] The expansion valve is controlled not to work by the control system, the first stop valve 8 and the third stop valve 10 are controlled to be closed, and the second stop valve 9 and the fourth stop valve 11 are opened. At this time, the refrigerant enters the valve body 1 from the first connecting port 2, and flows out to the coaxial tube through the third connecting port 4 for subsequent circulation. The medium flows as follows Fig. 9 As shown, after the cycle is completed, the refrigerant flows into the valve body 1 through the sixth connecting port 7, and then flows back to the evaporator through the fourth connecting port 5. The medium flows as shown in FIG. Fig.10 This cycle is a heat pump cycle. It should be noted that since the third flow channel 16 and the fourth flow channel 17 are not at the same height, Figure 6 The fourth flow channel 17 cannot be directly seen in the figure, but in order to facilitate the representation of the medium flow direction, Figure 8 and Fig.10 The position of the fourth flow channel 17 and the valve core state of the third stop valve 10 are indicated by dotted lines, which is clearer and more intuitive. This is understandable to those skilled in the art and will not be described in detail here. It should be noted that the control system in this embodiment is an application of the prior art, and the present utility model does not improve it, so it is not described in detail.

[0044] It can be seen that the multi-channel connecting valve assembly of the utility model can effectively reduce the number of air conditioning pipes in the system after being applied to the refrigerant circuit of the automobile, and the control is simpler. In addition, the overall structure is simple, easy to process, and has good working stability, reducing costs while improving quality.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A multi-channel connecting valve assembly, characterized in that: It comprises a valve body, wherein the valve body is sequentially provided with an upper flow channel and a lower flow channel along the vertical direction; The upper flow channel includes a first flow channel and a second flow channel, the first flow channel is arranged at the upper part of the valve body along the horizontal direction, and the second flow channel is connected to the first flow channel; The lower layer flow channel includes a third flow channel, a fourth flow channel and a fifth flow channel, and the fourth flow channel and the fifth flow channel are respectively communicated with the third flow channel.

2. The multi-channel connecting valve assembly according to claim 1, characterized in that: It also includes an expansion valve, the valve body is provided with a connecting channel, the third flow channel and the fourth flow channel are connected through the connecting channel, the expansion valve is installed on the connecting channel, and the expansion valve is used to connect the third flow channel and the fourth flow channel or cut off the connection between the third flow channel and the fourth flow channel.

3. The multi-channel connecting valve assembly according to claim 2, characterized in that: The third flow channel is located above the fourth flow channel in the vertical direction; the connecting channel is vertically arranged and connects the third flow channel and the fourth flow channel.

4. The multi-channel connecting valve assembly according to claim 3, characterized in that: It also includes a plurality of communication ports arranged on the valve body, the plurality of communication ports include at least a first communication port, a second communication port and a third communication port, the valve body has a front end face and a rear end face, the first flow channel is arranged to penetrate from back to front in the horizontal direction, the first flow channel forms the first communication port and the second communication port for fluid to flow into or out of the first flow channel at the rear end face and the front end face of the valve body respectively, one end of the second flow channel is connected to the first flow channel, and the other end extends to the front end face of the valve body and forms the third communication port for fluid to flow into or out of the second flow channel at the front end face.

5. The multi-channel connecting valve assembly according to claim 4, characterized in that: The multiple connecting ports also include a fourth connecting port, a fifth connecting port and a sixth connecting port. The third flow channel extends from the valve body to the rear end face of the valve body and forms the fourth connecting port on the rear end face of the valve body for fluid to flow into or out of the third flow channel. The fourth flow channel extends from the valve body to the front end face of the valve body and forms the fifth connecting port on the front end face of the valve body for fluid to flow into or out of the fourth flow channel. The fifth flow channel extends from the valve body to the front end face of the valve body and forms the sixth connecting port on the front end face of the valve body for fluid to flow into or out of the fifth flow channel.

6. The multi-channel connecting valve assembly according to claim 5, characterized in that: Also includes a first stop valve, a second stop valve, a third stop valve and a fourth stop valve; The first stop valve is installed on the valve body and is located near the second communication port, and the first stop valve is used to control the on and off of the first flow channel; The second stop valve is installed on the valve body and is located near the third communication port, and the second stop valve is used to control the on and off of the second flow channel; The third stop valve is installed on the valve body and is located near the fifth communication port, and the third stop valve is used to control the on-off of the fourth flow channel; The fourth stop valve is installed on the valve body and is located near the sixth communication port. The fourth stop valve is used to control the opening and closing of the fifth flow channel.

7. The multi-channel connecting valve assembly according to claim 6, characterized in that: The expansion valve comprises an expansion valve core and a temperature sensing package. The connecting passage is vertically penetrated. The temperature sensing package and the expansion valve core are sequentially arranged in the connecting passage from top to bottom.

8. A thermal management system, characterized in that: The thermal management system is equipped with a multi-channel connecting valve assembly as described in any one of claims 1-7.

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