A new energy vehicle heating system

Abstract

The invention discloses a new energy vehicle heating system, comprising: a cold air drainage mechanism, a cache tank, a heating chamber, a plurality of fin heaters, and a temperature sensor; the heating chamber comprises a first air inlet and a first air outlet arranged opposite to each other; a plurality of fin heaters are arranged in parallel in the heating chamber; the fin heater comprises a PTC heating element and a heating aluminum tube, the PTC heating element is arranged in the heating aluminum tube, a plurality of fins are arranged on the outer wall of the heating aluminum tube along its length direction, a flow channel is formed between any two adjacent fins, and the flow direction of the flow channel is consistent with the direction from the first air inlet to the first air outlet; the temperature sensor is arranged in the first air outlet, the first air outlet is connected with a three-way valve, the three-way valve is connected with a circulation pipe and an air outlet pipe; the cache tank comprises a second air inlet and a second air outlet, the second air inlet is respectively connected with the cold air drainage mechanism and the circulation pipe, and the second air outlet is connected with the first air inlet. The invention can increase the heating stroke and improve the heat conversion efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of heating equipment, and in particular to a heating system for a new energy vehicle. Background Art

[0002] In winter, due to the low outside temperature, vehicles need to turn on the heater to keep passengers warm. The heater usually uses a PTC heater to heat the air, but the heating stroke of the PTC heater is short, the temperature of the warm air is not enough, and the temperature of the warm air must reach the preset temperature, the surface temperature of the PTC heater is overheated, and the shell on which the PTC heater is installed is often made of plastic, which is easily deformed by heat and has a short lifespan. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention proposes a new energy vehicle heating system.

[0004] A new energy vehicle heating system proposed in the present invention comprises: a cold air drainage mechanism, a buffer tank, a heating chamber, a plurality of fin heaters, a circulation pipe, an air outlet pipe, a temperature sensor and a three-way valve;

[0005] The heating chamber comprises a first air inlet and a first air outlet which are arranged opposite to each other, and a plurality of fin heaters are arranged in parallel in the heating chamber;

[0006] The fin heater includes a PTC heating element and a heating aluminum tube, the PTC heating element is arranged in the inner cavity of the heating aluminum tube, a plurality of fins are arranged on the outer wall of the heating aluminum tube along the length direction thereof, a flow channel is formed between any two adjacent fins, and the flow direction of the flow channel is consistent with the direction from the first air inlet to the first air outlet;

[0007] The temperature sensor is arranged in the first air outlet, and the first air outlet is connected to the circulation pipe and the air outlet pipe respectively through the three-way valve;

[0008] The cache tank includes a second air inlet and a second air outlet, the second air inlet is connected to the cold air drainage mechanism and the circulation pipe respectively, and the second air outlet is connected to the first air inlet.

[0009] Preferably, the heating chamber includes an outer layer, a heat-insulating layer and an insulating heat-conducting layer which are arranged in sequence from the outside to the inside. A spiral flow channel is provided between the heat-insulating layer and the insulating heat-conducting layer. The air inlet of the spiral flow channel is connected to the cold air drainage mechanism, and the air outlet of the spiral flow channel is connected to the second air inlet.

[0010] Preferably, the spiral flow channel is separated by a spiral wire partition sealed between the heat insulation layer and the insulating heat conductive layer.

[0011] Preferably, the spiral flow channel is formed by a pipe spirally arranged between the heat insulation layer and the insulating heat conductive layer.

[0012] Preferably, a pump is connected between the circulation pipe and the second air inlet.

[0013] Preferably, a flow mixer is provided in the buffer tank.

[0014] Preferably, a flow equalizing plate is provided in the heating chamber between the first air inlet and the fin heater.

[0015] In the present invention, the proposed new energy vehicle heating system can mix the cold air introduced by the cold air drainage mechanism with the hot air heated once by the fin heater and then heat it through the fin heater, thereby increasing the heating stroke, making the discharged warm air reach a preset temperature, and improving the heat conversion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a new energy vehicle heating system proposed by the present invention. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] Reference Figure 1 , a new energy vehicle heating system proposed by the present invention comprises: a cold air drainage mechanism 1, a buffer tank 2, a heating chamber 3, a plurality of fin heaters 5, a temperature sensor and a three-way valve;

[0019] The heating chamber 3 includes a first air inlet and a first air outlet which are arranged opposite to each other, and a plurality of fin heaters 5 are arranged in parallel in the heating chamber 3;

[0020] The fin heater 5 includes a PTC heating element and a heating aluminum tube. The PTC heating element is arranged in the inner cavity of the heating aluminum tube. A plurality of fins are arranged on the outer wall of the heating aluminum tube along its length direction. A flow channel is formed between any two adjacent fins. The flow direction of the flow channel is consistent with the direction from the first air inlet to the first air outlet.

[0021] The temperature sensor is arranged in the first air outlet, and the first air outlet is connected to the circulation pipe and the air outlet pipe respectively through the three-way valve;

[0022] The cache tank 2 includes a second air inlet and a second air outlet. The second air inlet is connected to the cold air guide mechanism 1 and the circulation pipe respectively, and the second air outlet is connected to the first air inlet.

[0023] When the present invention is used specifically, the cold air diversion mechanism 1 introduces cold air into the buffer tank 2, and enters the heating chamber 3 through the first air inlet. The temperature sensor detects the temperature of the air heated by the fin heater 5 in the first air outlet. When the temperature of the air does not reach the preset temperature, the three-way valve connects the first air outlet and the circulation pipe, and the air enters the buffer tank 2 again through the first air outlet and the circulation pipe, preparing for the next heating. When the temperature of the air reaches the preset temperature, the three-way valve connects the first air outlet and the outlet pipe to discharge warm air into the vehicle.

[0024] The present invention can mix the cold air introduced by the cold air guide mechanism 1 with the hot air heated once by the fin heater 5 and then heat it by the fin heater 5, thereby increasing the heating stroke, making the discharged warm air reach a preset temperature, and improving the heat conversion efficiency.

[0025] Since the fin heater 5 is overheated on the surface of the heating chamber, and the outer shell of the heating chamber 3 is often made of plastic, it often causes the outer shell of the heating chamber 3 to be deformed due to excessive temperature. In order to avoid deformation of the outer shell of the heating chamber 3, in this embodiment, the heating chamber 3 includes an outer layer, a heat insulation layer and an insulating heat conductive layer arranged in sequence from the outside to the inside, and a spiral flow channel is arranged between the heat insulation layer and the insulating heat conductive layer. The air inlet of the spiral flow channel is connected to the cold air drainage mechanism 1, and the air outlet of the spiral flow channel is connected to the second air inlet. In addition, the setting of the outer shell of the heating chamber 3 can use the heat radiated by the fin heater 5 to the outside of the heating chamber 3 to preheat the cold air introduced by the cold air drainage mechanism 1, thereby reducing the energy required for subsequent heating.

[0026] In one specific embodiment, the spiral flow channel 4 is separated by a spiral wire partition sealed between the heat insulation layer and the insulating heat conductive layer.

[0027] In another specific embodiment, the spiral flow channel 4 is formed by a pipe spirally arranged between the heat insulation layer and the insulating heat conductive layer.

[0028] In a further embodiment, a pump is connected between the circulation pipe and the second air inlet.

[0029] In this embodiment, a mixer is provided in the buffer tank 2 to improve the mixing degree of cold air and hot air and improve the uniformity of the air after reheating.

[0030] In this embodiment, a flow regulating valve is connected between the buffer tank 2 and the first air inlet to adjust the heating wind speed.

[0031] However, since there is a certain angle between the direction of air entering the heating chamber 3 from the first air inlet and the direction of the fins of the fin heater 5, the fins are easily scratched, causing abnormal sound of wind blowing on the fins. Especially when the distance between the first air inlet and the fin heater 5 is close, the local wind speed is too high and it is more likely to produce abnormal sound quality. In order to reduce noise, in this embodiment, a flow equalizing plate is provided in the heating chamber 3 between the first air inlet and the fin heater 5.

[0032] Among them, the flow equalizing plate includes a flow equalizing surface located on the first air inlet side and a wind passing surface located on the fin heater 5 side. A through hole extending from the flow equalizing surface to the wind passing surface is provided on the flow equalizing plate, so that the air flow can flow from the flow equalizing surface to the wind passing surface.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new energy vehicle heating system, characterized in that: include: A cold air drainage mechanism (1), a buffer tank (2), a heating chamber (3), a plurality of fin heaters (5), a circulation pipe, an air outlet pipe, a temperature sensor and a three-way valve; The heating chamber (3) comprises a first air inlet and a first air outlet arranged opposite to each other, and a plurality of fin heaters (5) are arranged in parallel in the heating chamber (3); the heating chamber (3) comprises an outer layer, a heat insulation layer and an insulating heat conductive layer arranged in sequence from the outside to the inside, a spiral flow channel is provided between the heat insulation layer and the insulating heat conductive layer, the air inlet of the spiral flow channel is connected to the cold air drainage mechanism (1), and the air outlet of the spiral flow channel is connected to the second air inlet; The fin heater (5) comprises a PTC heating element and a heating aluminum tube, wherein the PTC heating element is arranged in the inner cavity of the heating aluminum tube, and a plurality of fins are arranged on the outer wall of the heating aluminum tube at intervals along the length direction thereof, and a flow channel is formed between any two adjacent fins, and the flow direction of the flow channel is consistent with the direction from the first air inlet to the first air outlet; The temperature sensor is arranged in the first air outlet, and the first air outlet is connected to the circulation pipe and the air outlet pipe respectively through the three-way valve; The buffer tank (2) comprises a second air inlet and a second air outlet, the second air inlet is respectively connected to the cold air drainage mechanism (1) and the circulation pipe, the second air outlet is connected to the first air inlet, a pump is connected between the circulation pipe and the second air inlet, and a flow mixer is provided in the buffer tank (2); A flow equalizing plate is provided in the heating chamber (3) between the first air inlet and the fin heater (5), the flow equalizing plate comprising a flow equalizing surface located on the first air inlet side and a wind passing surface located on the fin heater (5) side, and a through hole extending from the flow equalizing surface to the wind passing surface is provided on the flow equalizing plate, so that airflow can flow from the flow equalizing surface to the wind passing surface.

2. The new energy vehicle heating system according to claim 1, characterized in that: The spiral flow channel (4) is separated by a spiral wire partition plate which is sealed and arranged between the heat insulation layer and the insulating heat conductive layer.

3. The new energy vehicle heating system according to claim 1, characterized in that: The spiral flow channel (4) is formed by a pipeline spirally arranged between the heat insulation layer and the insulating heat conductive layer.

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