A liquid heater structure for a vehicle

Abstract

The utility model discloses a kind of liquid heater structures for vehicle, including heating cavity and the heating element being set in heating cavity, heating cavity is connected with liquid outlet pipe, heating element left and right sides are symmetrically provided with liquid flow processing device in heating cavity, liquid flow processing device includes liquid inlet interlayer and reflux cavity, the front and back sides of liquid inlet interlayer are respectively connected with liquid inlet pipe, the middle of liquid inlet interlayer is provided with the outlet being communicated with reflux cavity, outlet front and back sides are symmetrically provided with generating tube group on liquid inlet interlayer;Liquid working substance in the utility model is changed flow state by liquid flow processing device before heat exchange with heating element, change laminar flow into turbulent flow, the heat exchange efficiency of turbulent flow state liquid working substance and heating element is obviously improved compared with laminar flow state, under the same outlet temperature requirement, the application can reduce heating element energy consumption to some extent, beneficial to improve the endurance of electric new energy vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle thermal management devices, specifically to a liquid heater structure for vehicles. Background Technology

[0002] As is well known, electric new energy vehicles are equipped with thermal management systems, including heaters for heating battery packs. The basic working principle is to heat the liquid working fluid through electric heating elements and then exchange heat with the vehicle battery pack to maintain the normal operating temperature of the battery pack. Based on actual design and production experience, it is known that the liquid working fluid and electric heating elements in existing heaters undergo simple convection heat exchange, and there is room for improvement in heat exchange efficiency. Therefore, a new liquid heater structure for new energy vehicles is proposed. Utility Model Content

[0003] In view of the problems existing in the background art, the purpose of this utility model is to provide a liquid heater structure for vehicles, which effectively solves the problems existing in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A liquid heater structure for vehicles includes a heating chamber and a heating element disposed within the heating chamber. The heating chamber is connected to a liquid outlet pipe. Liquid flow treatment devices are symmetrically arranged within the heating chamber on both sides of the heating element. Each liquid flow treatment device includes an inlet jacket and a backflow chamber. Inlet pipes are connected to the front and rear sides of the inlet jacket, and an outlet communicating with the backflow chamber is located in the middle of the inlet jacket. Generating tube assemblies are symmetrically arranged on the inlet jacket on both sides of the outlet. Each generating tube assembly includes multiple vertical rows of generating tubes, each vertical row including multiple combined tubes evenly distributed along the vertical direction. The combined tubes communicate with the backflow chamber and the heating chamber. Each combined tube includes a semi-cylindrical tube and a triangular prism tube. The arc-shaped circumference of the semi-cylindrical tube faces the direction of incoming liquid, and the opposing surfaces of the triangular prism tube and the semi-cylindrical tube are parallel. Multiple turbulence-inducing rods are also disposed within the semi-cylindrical tube and the triangular prism tube.

[0006] Furthermore, distribution cavities are symmetrically arranged on the front and rear sides of the liquid inlet jacket. The distribution cavities are connected to the liquid inlet pipe. Multiple horizontal baffles are arranged inside the liquid inlet jacket. The horizontal baffles are located between two adjacent combined pipes in the vertical column of the generating pipe. The horizontal baffles divide the inner cavity of the liquid inlet jacket into multiple flow cavities. The distribution cavities are provided with through holes corresponding to the flow cavities.

[0007] Furthermore, the generating tube assembly includes two vertical rows of generating tubes, and an arc-shaped guide plate is provided in the reflux chamber. One side of the arc-shaped guide plate is fixed between the two vertical rows of generating tubes, and the other side extends to the vicinity of the outlet. The distance between the two arc-shaped guide plates is half the width of the outlet.

[0008] Furthermore, the upstream end of the liquid inlet pipe extends to the outside of the heating chamber and is connected to a liquid inlet main pipe.

[0009] Furthermore, the heating element includes at least two spiral electric heating tubes, which are fixed together by stainless steel cable ties.

[0010] Furthermore, a support is also provided between the heating element and the heating cavity.

[0011] This utility model has the following beneficial technical effects:

[0012] In this invention, the liquid working medium is first changed to a turbulent state by a liquid flow treatment device before heat exchange with the heating element. The heat exchange efficiency between the liquid working medium and the heating element in the turbulent state is significantly improved compared with that in the laminar state. Under the same outlet temperature requirement, this application can reduce the energy consumption of the heating element to a certain extent, which is beneficial to improving the range of electric new energy vehicles. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0014] Figure 2 This is a top view of the heating element in an embodiment of the present invention;

[0015] Figure 3 This is a top view of the internal structure of the liquid flow treatment device in an embodiment of this utility model;

[0016] Figure 4 This is a side view of the liquid inlet jacket in an embodiment of this utility model. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] like Figure 1-4 As shown in the figure, the vehicle liquid heater structure described in this embodiment includes a heating chamber 1 and a heating element 2 disposed in the heating chamber 1. The heating element 2 includes at least two spiral electric heating tubes 3, which are fixed together by stainless steel cable ties 4. To protect the heating element 2, a bracket 5 is also provided between the heating element 2 and the heating chamber 1. The bracket 5 is made of stainless steel and includes multiple curved sections. One side of the curved section abuts against the inner wall of the heating chamber, and the other side abuts against the heating element 2. This maintains the position of the heating element 2 during vehicle operation and prevents the heating element 2 from bumping against the inner wall of the heating chamber 1.

[0020] Heating chamber 1 is connected to a liquid outlet pipe, with the inlet of the liquid outlet pipe located in the middle of heating chamber 1. Liquid flow treatment devices 6 are symmetrically arranged in heating chamber 1 on both sides of heating element 2. Liquid flow treatment devices 6 include an inlet jacket 7 and a counterflow chamber 8. Inlet pipes 9 are connected to the front and rear sides of the inlet jacket 7, respectively. The upstream end of the inlet pipe 9 extends to the outside of heating chamber 1 and is connected to an inlet main pipe 10. An outlet 11 communicating with the counterflow chamber 8 is located in the middle of the inlet jacket 7. The outlet 11 has inlet pipes on both the front and rear sides. A generating tube group is symmetrically arranged on the interlayer 7. The generating tube group includes two vertical rows of generating tubes. Each vertical row of generating tubes includes three combined tubes evenly distributed in the vertical direction. The combined tubes connect the reflux chamber 8 and the heating chamber 1. The combined tubes include a semi-cylindrical tube 12 and a triangular prism tube 13. The arc-shaped circumference of the semi-cylindrical tube 12 faces the direction of the incoming liquid. The opposing surfaces of the triangular prism tube 13 and the semi-cylindrical tube 12 are parallel. Multiple turbulence rods 14 are also arranged inside the semi-cylindrical tube 12 and the triangular prism tube 13.

[0021] To optimize the liquid flow distribution in the height direction within the liquid inlet jacket 7, distribution cavities 15 are symmetrically arranged on the front and rear sides of the liquid inlet jacket 7. The distribution cavities 15 are connected to the liquid inlet pipe 9. Two horizontal baffles 16 are arranged inside the liquid inlet jacket 7. The horizontal baffles 16 are located between two adjacent combined pipes in the vertical column of the generating pipe. The horizontal baffles 16 divide the inner cavity of the liquid inlet jacket 7 into three flow chambers. The distribution cavities 15 are provided with through holes 18 corresponding to the flow chambers.

[0022] To better guide the outlet liquid flow toward the vertical column of generating pipes that is farther away from the outlet 11, an arc-shaped guide plate 19 is installed in the backflow chamber 8. One side of the arc-shaped guide plate 19 is fixed between the two vertical columns of generating pipes, and the other side extends to the vicinity of the outlet 11. The distance between the two arc-shaped guide plates 19 is half the width of the outlet 11.

[0023] The working principle of this embodiment is as follows:

[0024] The liquid working fluid flows into the distribution chambers 15 on both sides of the liquid inlet jacket 7 along the liquid inlet main pipe 10 and liquid inlet pipe 9. Then it passes through the through hole 18 and enters the flow passage chamber and flows towards the outlet 11. When passing through the combined pipe, many liquid flow vortices are formed on the downstream side of the combined pipe. The liquid flow vortices sent from both sides of the outlet 11 collide and break, causing the liquid flow to change from laminar flow to turbulent flow. After passing through the reverse flow chamber 8, the liquid flow enters the interior of the combined pipe. Under the continuous disturbance of the turbulent state maintained by the turbulent state by the turbulent bar 14, it enters the heating chamber 1 to exchange heat with the heating element 2. After absorbing heat, the liquid working fluid on both sides of the heating element 2 is discharged through the liquid outlet pipe for heating the vehicle battery pack. Compared with the prior art, in this embodiment, the liquid working fluid and the heating element 2 are first changed to change the flow state by the liquid flow treatment device 6 before exchanging heat, changing the laminar flow to turbulent flow. The heat exchange efficiency of the liquid working fluid and the heating element in the turbulent state is significantly improved compared with the laminar state. Under the same outlet temperature requirement, this embodiment can reduce the energy consumption of the heating element 2 to a certain extent, which is beneficial to improving the range of electric new energy vehicles.

[0025] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A liquid heater structure for vehicles, characterized in that, The device includes a heating chamber and a heating element disposed within the heating chamber. The heating chamber is connected to a liquid outlet pipe. A liquid flow treatment device is symmetrically arranged in the heating chamber on both sides of the heating element. The liquid flow treatment device includes an inlet jacket and a backflow chamber. An inlet pipe is connected to the front and rear sides of the inlet jacket, and an outlet communicating with the backflow chamber is disposed in the middle of the inlet jacket. A generating tube group is symmetrically arranged on the inlet jacket on both sides of the outlet. The generating tube group includes multiple vertical rows of generating tubes. Each vertical row of generating tubes includes multiple combined tubes evenly distributed in the vertical direction. The combined tubes communicate with the backflow chamber and the heating chamber. The combined tubes include semi-cylindrical tubes and triangular prism tubes. The arc-shaped circumference of the semi-cylindrical tubes faces the direction of incoming liquid, and the opposite faces of the triangular prism tubes and the semi-cylindrical tubes are parallel. Multiple turbulence rods are also disposed inside the semi-cylindrical tubes and the triangular prism tubes.

2. The structure of a vehicle liquid heater according to claim 1, characterized in that, The liquid inlet jacket has symmetrical distribution cavities on its front and rear sides. The distribution cavities are connected to the liquid inlet pipe. The liquid inlet jacket has multiple horizontal baffles. The horizontal baffles are located between two adjacent combined pipes in the vertical column of the generating pipe. The horizontal baffles divide the inner cavity of the liquid inlet jacket into multiple flow cavities. The distribution cavities have through holes corresponding to the flow cavities.

3. The structure of a vehicle liquid heater according to claim 1, characterized in that, The generating tube assembly includes two vertical rows of generating tubes. An arc-shaped guide plate is provided in the reflux chamber. One side of the arc-shaped guide plate is fixed between the two vertical rows of generating tubes, and the other side extends to the vicinity of the outlet. The distance between the two arc-shaped guide plates is half the width of the outlet.

4. A vehicle liquid heater structure according to claim 1 or 2, characterized in that, The upstream end of the liquid inlet pipe extends to the outside of the heating chamber and is connected to a liquid inlet main pipe.

5. The structure of a vehicle liquid heater according to claim 1, characterized in that, The heating element includes at least two spiral electric heating tubes, which are fixed together by stainless steel cable ties.

6. The structure of a vehicle liquid heater according to claim 5, characterized in that, A support is also provided between the heating element and the heating cavity.

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