Heater for vehicle-mounted thermal management system

Abstract

The utility model relates to a heater for a vehicle-mounted thermal management system, which comprises a shell, wherein a through open slot is formed in the shell; the heating pipe is installed in the open groove, a first flow channel is formed in the heating pipe, the first end of the heating pipe is connected with a water inlet guide pipe installed outside the shell, and the second end of the heating pipe is connected with a water outlet guide pipe installed outside the shell; a second flow channel surrounding the heating pipe is formed between the heating pipe and the inner wall of the open groove, the first end of the heating pipe is provided with a flow dividing opening used for communicating the first flow channel with the second flow channel, and the outlet of the first flow channel and the outlet of the second flow channel are both communicated with the water outlet guide pipe; and the outlet temperatures of the first flow channel and the second flow channel are the same or nearly the same. According to the utility model, the periphery of the heating pipe is coated with the second flow channel, so that the heating pipe can heat internal and external fluids at the same time, and the heating efficiency is higher.

Description

Technical Field

[0001] This utility model relates to a heater, and more particularly to a heater for an on-board thermal management system. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] In a vehicle's thermal management system, a heater is typically installed. It works in conjunction with the refrigerant in the thermal management system to control the temperature of the fluid, thereby managing the temperature of the vehicle's air conditioning system, battery cooling system, motor cooling system, and so on.

[0004] Existing fluid heaters include plate flow and pipe flow types. Pipe flow heaters have better heating efficiency, mainly by directly heating the fluid in the pipe through heating tubes. However, their heating area is limited, and there is still room for improvement in heating efficiency.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0006] The purpose of this invention is to provide a heater for an on-board thermal management system. By using a first flow channel inside the heating tube and a second flow channel surrounding it, the heating tube can simultaneously heat the fluids inside and outside, and the outlet temperatures are the same or nearly the same, resulting in high heating efficiency.

[0007] To achieve the above objectives, this utility model discloses a heater for an on-board thermal management system, the heater for the on-board thermal management system comprising:

[0008] A housing having a through slot;

[0009] A heating element is installed in the slot, the heating element has a first flow channel inside, the first end of the heating element is connected to a water inlet pipe installed outside the housing, and the second end of the heating element is connected to a water outlet pipe installed outside the housing.

[0010] A second flow channel is formed between the heating tube and the inner wall of the slot, surrounding the heating tube. A diversion port is provided at the first end of the heating tube to connect the first flow channel and the second flow channel. The outlets of the first flow channel and the second flow channel are both connected to the water outlet conduit. The outlet temperatures of the first flow channel and the second flow channel are the same or nearly the same.

[0011] As a further description of the above technical solution, the cross-sectional area of ​​the first flow channel is larger than that of the second flow channel, and the heating tube cavity is provided with heat dissipation fins installed from the first end of the heating tube to the second end of the heating tube, so that the temperature difference of the water flowing from the first end to the second end of the heating tube is the same as the temperature difference of the water flowing from the first end to the second end of the second flow channel.

[0012] As a further description of the above technical solution, the ratio of the cross-sectional area of ​​the first flow channel to the cross-sectional area of ​​the second flow channel is 2.5 to 1.

[0013] As a further description of the above technical solution, the slot and the heating pipe are configured as a U-shape with the middle section bent, and the water inlet pipe and the water outlet pipe are installed on the same plane.

[0014] As a further description of the above technical solution, a transition block is fixed to one end face of the shell. The transition block has an inlet and an outlet. The inlet conduit is installed at the inlet position of the transition block and connected to the first end of the heating tube. The outlet conduit is installed at the outlet position of the transition block and connected to the second end of the heating tube.

[0015] As a further description of the above technical solution, a first sealing ring is installed between the water inlet conduit and the transition block, and a second sealing ring is installed between the water outlet conduit and the transition block.

[0016] As a further description of the above technical solution, the second end of the heating tube is provided with a return port that communicates with the second flow channel, the branch port is provided in a plurality of positions that are equally spaced around the extension direction of the heating tube, and the return port is provided in a plurality of positions that are equally spaced around the extension direction of the heating tube.

[0017] As a further description of the above technical solution, a third sealing ring and a fourth sealing ring are respectively installed between the heating tube and the inner wall of the groove. The third sealing ring is located between the diversion port and the water inlet pipe, and the fourth sealing ring is located between the return port and the water outlet pipe.

[0018] As a further description of the above technical solution, a thick film for heating is attached to the outer wall of the heating tube.

[0019] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0020] This invention discloses a heater for an on-board thermal management system. By incorporating a second flow channel surrounding the heating tube, the heating tube can simultaneously heat both internal and external fluids, resulting in high heating efficiency. Water entering through the inlet pipe can flow from the heating tube to the outlet pipe, or it can flow from the branch outlet at the first end of the heating tube into the second flow channel, and then back to the outlet pipe from the return outlet at the second end. In other words, both the inner and outer walls of the heating tube can directly heat the water flow, maximizing the heating area and achieving optimal heating efficiency. Furthermore, the first flow channel inside the heating tube and the second flow channel outside the heating tube have the same or nearly the same outlet temperature, and the multi-channel design does not compromise the heating objective.

[0021] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a cross-sectional schematic diagram of a heater for an on-board thermal management system provided in the embodiments of this specification;

[0024] Figure 2 This is an overall installation diagram of a heater for an on-board thermal management system provided in the embodiments of this specification;

[0025] Figure 3 This is a three-dimensional schematic diagram of a heater for an on-board thermal management system provided in the embodiments of this specification;

[0026] Figure 4 This is a three-dimensional cross-sectional view of a heater for an on-board thermal management system provided in the embodiments of this specification;

[0027] In the picture:

[0028] 100. Compressor;

[0029] 1. Housing; 11. Groove; 111. Second flow channel; 12. Third sealing ring; 13. Fourth sealing ring;

[0030] 2. Heating element; 21. Flow branch port; 22. Return port; 23. Heat dissipation fins; 24. First flow channel;

[0031] 3. Water inlet pipe; 31. First sealing ring;

[0032] 4. Water outlet pipe; 41. Second sealing ring;

[0033] 5. Transition block; 51. Inlet; 52. Outlet. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0035] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0036] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0037] Please see Figure 1-4 This embodiment provides a heater for an on-board thermal management system, wherein the heater for the on-board thermal management system includes:

[0038] The housing 1 has a through slot 11.

[0039] Heating tube 2 is installed in slot 11. Heating tube 2 has a first flow channel 24 inside. The first end of heating tube 2 is connected to the water inlet pipe 3 installed outside the shell 1, and the second end of heating tube 2 is connected to the water outlet pipe 4 installed outside the shell 1.

[0040] A second flow channel 111 is formed between the heating tube 2 and the inner wall of the groove, surrounding the heating tube 2. The first end of the heating tube 2 is provided with a diversion port 21 for connecting with the first flow channel 24 and the second flow channel 111. The outlets of the first flow channel 24 and the second flow channel 111 are both connected to the water outlet pipe 4. The outlet temperatures of the first flow channel 24 and the second flow channel 111 are the same or close to the same.

[0041] Based on the above structure, during use, cold water can be introduced from one side of the water inlet pipe 3. Then, the cold water enters the first end of the heating tube installed in the slot 11 of the housing 1 through the water inlet pipe 3. First, a portion of the cold water flows directly from the cavity of the heating tube 2 into the first flow channel 24 and flows downstream. During the flow, under the high temperature heating of the heating tube 2 wall, heat is absorbed from the inner wall of the heating tube 2, and the temperature of the cold water fluid in the cavity of the heating tube 2 is raised until it flows to the second end of the heating tube 2 and reaches the preset temperature, thus completing the heating of the first flow channel 24.

[0042] Simultaneously, when the cold water fluid enters the first end of the heating pipe 2, another part of the fluid flows from the branch port 21 of the heating pipe 2 into the second flow channel 111 between the heating pipe 2 and the slot 11, and flows from the first end to the second end of the second flow channel 111. During the flow, under the high temperature heating of the heating pipe 2 wall, heat is absorbed from the outer wall of the heating pipe 2, and the temperature of the cold water fluid in the second flow channel 111 is raised until it flows back to the heating pipe from the return port 22 at the second end of the heating pipe 2 to complete the heating.

[0043] Finally, the heated hot water fluid in the cavity of the heating pipe 2 and the heated hot water fluid in the second flow channel 111 converge at the second end of the heating pipe 2, are discharged from the outlet pipe 4, and are delivered to the designated components of the vehicle system for heating.

[0044] In the above structure, the heating tube 2 can simultaneously heat both internal and external fluids by using a second flow channel 111 that surrounds it, resulting in high heating efficiency. Water entering from the inlet pipe 3 can flow from the heating tube 2 to the outlet pipe 4, or it can flow from the branch port 21 at the first end of the heating tube 2 into the second flow channel 111, and then from the return port 22 at the second end of the heating tube 2 to the outlet pipe 4. In other words, both the inner and outer walls of the heating tube 2 in this invention can directly heat the water flow, maximizing the heating area and achieving better heating efficiency.

[0045] Existing heaters that use heating tube 2 can generally only heat the fluid inside the heating tube 2 in one direction.

[0046] In this embodiment, to ensure stable heat output, the cross-sectional area of ​​the first flow channel 24 is larger than that of the second flow channel 111. Heat dissipation fins 23 are installed in the cavity of the heating pipe 2, extending from the first end to the second end. This ensures that the temperature difference between the water flowing from the first end to the second end of the heating pipe 2 is the same as the temperature difference between the water flowing from the first end to the second end of the second flow channel 111. In other words, in this embodiment, the flow rate inside the heating pipe 2 is greater than the flow rate in the outer second flow channel 111. However, by installing heat dissipation fins 23 inside the heating pipe 2 for turbulence and auxiliary heating, the flow velocity within the heat dissipation fins 23 can be indirectly reduced. This ensures that the same mass of fluid absorbs the same amount of heat from the wall of the heating pipe 2 under the influence of the heat dissipation fins 23 as it does in the second flow channel 111. Specifically, in this embodiment, a thick film is attached to the outer wall of the heating pipe 2 for easy connection to external power supply and installation. This allows the heating pipe 2 as a whole to function as a complete heat source, heating the water flow on both the inner and outer walls. Specifically, in this embodiment, the heat dissipation fins 23 can be configured as a combination of metal sheets with multiple bends in cross section. The ratio of the cross-sectional area of ​​the first flow channel 24 to the cross-sectional area of ​​the second flow channel 111 is 2.5 to 1, which makes it easy to achieve a consistent heating effect.

[0047] Please see Figure 1 The housing 1 has a U-shaped groove 11 and a heating tube 2 with a bend in the middle section. The inlet pipe 3 and outlet pipe 4 are installed on the same plane. A transition block 5 is fixed to one end face of the housing 1. The transition block 5 has an inlet 51 and an outlet 52. The inlet pipe 3 is installed at the inlet 51 of the transition block 5 and connected to the first end of the heating tube 2. The outlet pipe 4 is installed at the outlet 52 of the transition block 5 and connected to the second end of the heating tube 2. Based on the U-shaped structure, the housing 1 can be set as a semi-annular structure with a groove 11 opening on one side. The transition block 5 seals the side with the groove 11, facilitating the installation of the inlet pipe 3 and the outlet pipe 4. Specifically, the housing 1 can be made of aluminum-silicon-magnesium alloy, and the transition block 5 can be made of SU444 stainless steel. The combination of the two can achieve a stable structural connection through brazing.

[0048] Further, please see Figure 1 A first sealing ring 31 is installed between the water inlet pipe 3 and the transition block 5 to prevent fluid leakage between the water inlet pipe 3 and the transition block 5. Similarly, a second sealing ring 41 is installed between the water outlet pipe 4 and the transition block 5, and its principle is the same as that of the first sealing ring 31 mentioned above.

[0049] In another embodiment, the second end of the heating tube 2 has a return port 22 connected to the second flow channel 111. The diversion ports 21 are configured as multiple ports spaced at equal angles around the extension direction of the heating tube 2, specifically four ports at equal angles, each spaced 90 degrees apart. This allows fluid to enter from four directions, and the four sets of openings can meet the flow requirements, while also simplifying the manufacturing process. Similarly, the return ports 22 are configured as multiple ports spaced at equal angles around the extension direction of the heating tube 2, with the number consistent with the number of diversion ports 21.

[0050] Please see Figure 1 A third sealing ring 12 and a fourth sealing ring 13 are respectively installed between the heating tube 2 and the inner wall of the slot 11. The third sealing ring 12 is located between the diversion port 21 and the water inlet pipe 3. The third sealing ring 12 can be locked in the protruding limiting groove on the slot 11 to prevent the displacement of the third sealing ring 12. The third sealing ring 12 is used to limit the leakage of water flow in the second flow channel 111 towards the transition block 5. Similarly, the fourth sealing ring 13 is located between the return port 22 and the water outlet pipe 4, and its principle is the same as that of the third sealing ring 12.

[0051] In another embodiment, such as Figure 3 As shown, the transition block 5 can fix the inlet pipe 3 and the outlet pipe 4 by means of threaded connection.

[0052] Please see Figure 2 The heater used in the vehicle thermal management system can be installed on one side of the compressor 100. Specifically, the housing 1 can be fixed and stably installed by the contoured surface formed by the controller box and other structures set on one side of the compressor 100, which has a high degree of integration.

[0053] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0054] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0055] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A heater for an on-board thermal management system, characterized in that, The heater for the vehicle thermal management system includes: A housing having a through slot; A heating element is installed in the slot, the heating element has a first flow channel inside, the first end of the heating element is connected to a water inlet pipe installed outside the housing, and the second end of the heating element is connected to a water outlet pipe installed outside the housing. A second flow channel is formed between the heating tube and the inner wall of the slot, surrounding the heating tube. A diversion port is provided at the first end of the heating tube to connect the first flow channel and the second flow channel. The outlets of the first flow channel and the second flow channel are both connected to the water outlet conduit. The outlet temperatures of the first flow channel and the second flow channel are the same or nearly the same.

2. The heater for an on-board thermal management system according to claim 1, characterized in that: The cross-sectional area of ​​the first flow channel is larger than that of the second flow channel. The heating tube is provided with heat dissipation fins installed from the first end to the second end of the heating tube, so that the temperature difference of the water flowing from the first end to the second end of the heating tube is the same as the temperature difference of the water flowing from the first end to the second end of the second flow channel.

3. The heater for an on-board thermal management system according to claim 2, characterized in that: The ratio of the cross-sectional area of ​​the first flow channel to the cross-sectional area of ​​the second flow channel is 2.5 to 1.

4. The heater for an on-board thermal management system according to claim 1, characterized in that: The slot and the heating pipe are configured as a U-shape with a bend in the middle section, and the water inlet pipe and the water outlet pipe are installed on the same plane.

5. The heater for an on-board thermal management system according to claim 4, characterized in that: A transition block is fixed to one end face of the housing. The transition block has an inlet and an outlet. The inlet conduit is installed at the inlet position of the transition block and connected to the first end of the heating tube. The outlet conduit is installed at the outlet position of the transition block and connected to the second end of the heating tube.

6. The heater for an on-board thermal management system according to claim 5, characterized in that: A first sealing ring is installed between the water inlet pipe and the transition block, and a second sealing ring is installed between the water outlet pipe and the transition block.

7. The heater for an on-board thermal management system according to claim 1, characterized in that: The flow divider is configured as a plurality of ports spaced at equal angles around the extension direction of the heating tube. The second end of the heating tube has a return port connected to the second flow channel. The return port is configured as a plurality of ports spaced at equal angles around the extension direction of the heating tube.

8. The heater for an on-board thermal management system according to claim 7, characterized in that: A third sealing ring and a fourth sealing ring are respectively installed between the heating tube and the inner wall of the slot. The third sealing ring is located between the diversion port and the water inlet pipe, and the fourth sealing ring is located between the return port and the water outlet pipe.

9. The heater for an on-board thermal management system according to claim 1, characterized in that: The outer wall of the heating tube is covered with a thick film for heating.

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