Vehicle-mounted heater

Abstract

The utility model relates to a vehicle-mounted heater which comprises a shell, the shell is installed in a positioning groove, and the shell is provided with a tubular open groove with a bent middle section. The heating pipe is installed in the open groove, a first flow channel is formed in the heating pipe, heat dissipation fins are arranged in the first flow channel, a second flow channel surrounding the heating pipe is formed between the heating pipe and the inner wall of the open groove, and the first flow channel and the second flow channel share a water inlet guide pipe installed outside the shell on the water inlet side. The first flow channel and the second flow channel share a water outlet guide pipe installed outside the shell on the water outlet side. Wherein the heating pipe is arranged to be in a U shape with a bent middle section, and the water inlet guide pipe and the water outlet guide pipe are installed on the same plane. The heating efficiency can be improved by arranging two layers of flow channels inside and outside the heating pipe, and the water inlet guide pipe and the water outlet guide pipe are arranged on the same plane by virtue of the U-shaped structure, so that the volume can be smaller on the basis of meeting the heating power.

Description

Technical Field

[0001] This utility model relates to a heater, and more particularly to a vehicle-mounted heater. 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 vehicle heaters include plate flow heaters that guide water flow through an integrated cover, but their contact area with the water is limited, and generally only one side of the aluminum material in contact with the water is coated with an additional heat film, thus limiting heating efficiency. Other methods use heating pipes to heat the fluid within them, but these are constrained by the pipe diameter in the installation environment, making their heating efficiency insufficient. Furthermore, existing heaters are typically mounted on compressors, resulting in large sizes and wasted space due to inefficient piping layouts.

[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 vehicle heater that can improve heating efficiency by setting two layers of flow channels inside and outside the heating tube, and by using a U-shaped structure to set the inlet and outlet water pipes on the same side, so that the volume can be made smaller while meeting the heating power requirements.

[0007] To achieve the above objectives, this utility model discloses a vehicle-mounted heater, wherein a controller mounted on a compressor is located on the side opposite to the compressor, and the vehicle-mounted heater includes:

[0008] A housing, which is installed in the positioning groove, and the housing is provided with a tubular groove with a bent middle section;

[0009] A heating element is installed in the slot. The heating element has a first flow channel inside and heat dissipation fins are provided in the first flow channel. A second flow channel is formed between the heating element and the inner wall of the slot, surrounding the heating element. The first flow channel and the second flow channel share a water inlet conduit installed outside the housing on the water inlet side, and the first flow channel and the second flow channel share a water outlet conduit installed outside the housing on the water outlet side.

[0010] The heating tube is configured as a U-shape with a bent middle section, and the inlet and outlet water pipes are installed on the same plane. As a further description of the above technical solution, a thick film for heating is attached to the outer wall of the heating tube.

[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 heat dissipation fins are installed in the cavity of the heating tube 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.

[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, 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.

[0014] 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.

[0015] As a further description of the above technical solution, one end of the positioning groove is provided with a first opening and a second opening, the water inlet pipe passes through and abuts against the first opening, and the water outlet pipe passes through and abuts against the second opening.

[0016] As a further description of the above technical solution, the size of the positioning groove matches the outer edge of the housing, so that the positioning groove limits the horizontal movement of the housing. Through the above technical solution, the beneficial effects of this utility model are as follows:

[0017] This utility model discloses a vehicle-mounted heater that improves heating efficiency by setting two layers of flow channels inside and outside the heating tube. A U-shaped structure is used to arrange the inlet and outlet water pipes on the same plane. Heat dissipation fins are also installed inside the first flow channel, increasing the heating area for the water flow. This allows for a smaller volume while still meeting heating power requirements. Specifically, the heating tube in this application forms a first flow channel inside and a second flow channel outside the heating tube. By heating the heating tube simultaneously from both inside and outside, heating efficiency is significantly improved. Furthermore, by setting the heating tube to bend in the middle to form a U-shaped structure with parallel ends, the inlet and outlet water pipes can be installed on the same plane of the housing, extending the heating tube while reducing the overall volume.

[0018] 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

[0019] 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.

[0020] Figure 1 This is an exploded schematic diagram of a vehicle-mounted heater provided in the embodiments of this specification;

[0021] Figure 2 This is a cross-sectional schematic diagram of a vehicle-mounted heater provided in the embodiments of this specification;

[0022] Figure 3 This is a schematic diagram of the overall installation of a vehicle-mounted heater provided in the embodiments of this specification;

[0023] Figure 4 This is a three-dimensional schematic diagram of a vehicle-mounted heater provided in the embodiments of this specification;

[0024] Figure 5 This is a three-dimensional cross-sectional view of a vehicle-mounted heater provided in the embodiments of this specification;

[0025] In the picture:

[0026] 100. Compressor; 200. Controller; 201. Positioning slot; 202. First opening; 203. Second opening;

[0027] 1. Housing; 11. Groove; 111. Second flow channel; 12. Third sealing ring; 13. Fourth sealing ring;

[0028] 2. Heating element; 21. Flow branch port; 22. Return port; 23. Heat dissipation fins; 24. First flow channel;

[0029] 3. Water inlet pipe; 31. First sealing ring;

[0030] 4. Water outlet pipe; 41. Second sealing ring;

[0031] 5. Transition block; 51. Inlet; 52. Outlet. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Please see Figure 1-5 This embodiment provides a vehicle-mounted heater, which includes:

[0036] The housing 1 has a through slot 11.

[0037] A heating tube 2 is installed in the slot 11. The heating tube 2 has a first flow channel 24 inside, and heat dissipation fins 23 are provided in the first flow channel 24. A second flow channel 111 is formed between the heating tube 2 and the inner wall of the slot 11, surrounding the heating tube 2. The first flow channel 24 and the second flow channel 111 share a water inlet conduit 3 installed outside the housing 1 on the water inlet side, and the first flow channel 24 and the second flow channel 111 share a water outlet conduit 4 installed outside the housing 1 on the water outlet side.

[0038] The slot 11 and the heating pipe 2 are configured as U-shaped with a bend in the middle section, and the water inlet pipe 3 and the water outlet pipe 4 are installed on the same plane.

[0039] Specifically, the controller 200 of the vehicle heater is mounted on the side opposite to the compressor 100. A positioning groove 201 is recessed on the side of the controller 200 opposite to the compressor 100. One end of the positioning groove 201 has a first opening 202 and a second opening 203. The water inlet pipe 3 passes through and abuts against the first opening 202, and the water outlet pipe 4 passes through and abuts against the second opening 203. The size of the positioning groove 201 matches the outer edge of the housing 1, so that the positioning groove 201 limits the horizontal movement of the housing 1.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In the above structure, the slot 11 and the heating tube 2 are configured as a U-shape with a bend in the middle section, and the inlet pipe 3 and the outlet pipe 4 are installed on the same plane. A transition block 5 is fixed to one end face of the shell 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 is 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 is connected to the second end of the heating tube 2. Based on the U-shaped structure, the shell 1 can be configured as a semi-annular structure with an opening of the slot 11 on one side, and the side with the slot 11 is sealed by the transition block 5, which facilitates the installation of the inlet pipe 3 and the outlet pipe 4. Specifically, the shell 1 can be made of aluminum-silicon-magnesium alloy, and the transition block 5 can be made of SU444 stainless steel. The combination between the two can achieve a stable structural connection through brazing. The heating tube 2 has heat dissipation fins 23 installed from the first end to the second end of the heating tube in the tube cavity. The heat dissipation fins 23 can be scale-shaped to increase the contact surface with the water flow, so that the heating tube 2 heats the water flow more evenly.

[0044] In the above structure, heating efficiency can be improved by setting two layers of flow channels inside and outside the heating tube 2, and the inlet pipe 3 and outlet pipe 4 are set on the same plane by means of a U-shaped structure. At the same time, heat dissipation fins 23 are set inside the first flow channel 24, which increases the heating area of ​​the water flow. While meeting the heating power requirements, the volume can be made smaller. Specifically, the heating tube 2 in this application forms a first flow channel 24 inside and a second flow channel 111 outside the heating tube 2. By heating the heating tube 2, both the inside and outside of the heating tube 2 are heated at the same time, which can significantly improve the heating efficiency. At the same time, by setting the heating tube 2 to be bent in the middle to form a U-shaped structure with parallel ends, the inlet pipe 3 and outlet pipe 4 can be installed on the same plane of the shell 1, which lengthens the heating tube 2 while reducing the overall volume. Meanwhile, by setting the positioning groove 201 with matching size and the first opening 202 and the second opening 203, the installation convenience of the shell 1 can be improved, eliminating the need for additional positioning of the shell 1, the inlet pipe 3 or the outlet pipe 4.

[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 of the hot water, the cross-sectional area of ​​the first flow channel 24 is larger than that of the second flow channel 111, so 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. That is, 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 in the heat dissipation fins 23 can be indirectly reduced, so 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 easy installation, allowing the heating pipe 2 as a whole to function as a complete heat source to heat the water flowing between 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] Further, please see Figure 2 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.

[0048] 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.

[0049] Please see Figure 2 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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 vehicle-mounted heater, wherein a controller mounted on a compressor is located on the side opposite to the compressor, characterized in that, The controller has a recessed positioning groove on the side opposite to the compressor, and the vehicle heater includes: A housing, which is installed in the positioning groove, and the housing is provided with a tubular groove with a bent middle section; A heating element is installed in the slot. The heating element has a first flow channel inside and heat dissipation fins are provided in the first flow channel. A second flow channel is formed between the heating element and the inner wall of the slot, surrounding the heating element. The first flow channel and the second flow channel share a water inlet conduit installed outside the housing on the water inlet side, and the first flow channel and the second flow channel share a water outlet conduit installed outside the housing on the water outlet side. The heating tube is 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.

2. The vehicle-mounted heater according to claim 1, characterized in that: The outer wall of the heating tube is covered with a thick film for heating.

3. The vehicle-mounted heater 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 heat dissipation fins are installed in the cavity of the heating tube from the first end to the second end of the heating tube, so that the temperature difference between the water flowing from the first end to the second end of the heating tube is the same as the temperature difference between the water flowing from the first end to the second end of the second flow channel.

4. The vehicle-mounted heater according to claim 3, 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.

5. The vehicle-mounted heater according to claim 1, 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 vehicle-mounted heater 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 vehicle-mounted heater according to claim 1, characterized in that: One end of the positioning groove is provided with a first opening and a second opening. The water inlet pipe passes through and abuts against the first opening, and the water outlet pipe passes through and abuts against the second opening.

8. The vehicle-mounted heater according to claim 1, characterized in that: The size of the positioning groove matches the outer edge of the housing so that the positioning groove limits the horizontal movement of the housing.

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