Automotive air heating core structure

Abstract

The utility model relates to a vehicle air heating core structure which comprises a conductive unit, a heat dissipation unit and a heating unit. A heating main body of the heating unit adopts a built-in resistance wire, and a positive electrode leading rod end and a negative electrode leading rod end are exposed at the front end of the heating main body; the conductive unit is composed of a plastic support and a copper bar assembly which is integrally molded and fixed, and each copper bar is provided with an anode input jack and a cathode output jack. The two ends and the middle of the copper bar assembly are each provided with a connecting claw, the connecting claws at the two ends serve as positive electrode input ends, and the connecting claws in the middle serve as common negative electrode output ends. Each heat dissipation unit is composed of a finned tube and internally fixed fins; the heating units and the heat dissipation units are sequentially bonded or welded at intervals, and sealing gaskets are installed at the front ends of the multiple sets of heating units and the heat dissipation units; the conductive unit is arranged at the front end of the sealing gasket; and the positive electrode guide rod end and the negative electrode guide rod end of the heating unit are respectively inserted and welded with the positive electrode input jack and the negative electrode output jack of the corresponding copper bar on the conductive unit. The structure is light in weight, high in heat exchange efficiency, safe and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile air conditioner, especially relates to a vehicle air heating core structure. BACKGROUND

[0002] New energy electric vehicle generally adopts power battery pack as power source, and is different from the heat source generated by the fuel engine of the fuel vehicle, the new energy electric vehicle does not have the power device that generates the heat source itself, and cannot be used as the source of the air heater, so the new energy vehicle heating needs to increase the additional heating equipment, and the PTC air heating heater just meets this demand. INVENTION CONTENTS

[0003] The utility model discloses to the above technical problem, propose a kind of vehicle air heating core structure of light weight, high heat exchange efficiency, safe and reliable.

[0004] The above purpose of the utility model is realized by the following technical scheme:

[0005] A kind of vehicle air heating core structure, including conducting unit, heat dissipation unit and heating unit;The heating unit is overall in the shape of flat square bar, and the heating main body uses built-in resistance wire, and the front end is exposed with positive pole lead rod end head and negative pole lead rod end head;The conducting unit is composed of plastic support and copper bar assembly solidified on the plastic support, and a positive input jack and a negative output jack are arranged on each copper bar of copper bar assembly;Copper bar assembly two ends and middle part are provided with one connecting claw respectively, and the connecting claw of two ends is positive input end, and the connecting claw of middle part is common negative output end, and the copper bar between the connecting claw of two ends and the connecting claw of middle part is respectively connected in series, and three connecting claws constitute external terminal connected with the control panel of vehicle air heating heater;The heat dissipation unit is composed of finned tube and fin inserted and welded in finned tube, and finned tube uses rectangular tube with opposite two sides opening;

[0006] Multiple groups of heating units and multiple groups of heat dissipation units are connected by bonding or welding in the manner of alignment at two ends and sequentially spaced, and sealing gasket is installed at the front end of multiple groups of heating units and heat dissipation units, and lead rod perforation is provided on the sealing gasket;The conducting unit is parallelly arranged at the front end of sealing gasket, and the number of copper bar of copper bar assembly is consistent with the number of heating unit, and the positive pole lead rod end head and the negative pole lead rod end head of multiple groups of heating units are inserted through the corresponding lead rod perforation on the sealing gasket, and are respectively inserted and matched with the positive input jack and the negative output jack of the corresponding copper bar on the conducting unit and are welded.

[0007] Moreover, the heating unit comprises an aluminum shell, magnesium powder, the resistance wire, two lead rods, and a rubber sleeve; the resistance wire is wound on the two lead rods and welded to the two lead rods at two ends; the two lead rods are parallelly inserted into the aluminum shell with the front ends exposed, the magnesium powder is filled in the periphery of the two lead rods in the aluminum shell, and the two ends of the aluminum shell are filled with sealing glue for sealing the magnesium powder; and the rubber sleeve is installed in front of the sealing glue at the front end of the aluminum shell.

[0008] The utility model has the advantages and positive effects that:

[0009] 1. The utility model has high heating efficiency, and the heating efficiency can be up to 95% or above through test.

[0010] 2. The utility model has simple structure and light weight, and compared with the same specification PTC air heating heater, the parts are reduced, the weight is reduced, and the lightweight design of the heating core body is realized.

[0011] 3. The utility model adopts resistance wire heating for the heating unit, and the performance is safe and reliable.

[0012] 4. The utility model has simple structure and low cost, and mass production can be realized.

[0013] 5. The utility model has wide applicable voltage range, and the heating power can be matched according to different requirements. DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is an explosion view of the utility model's conductive unit;

[0016] Figure 3 It is a front view of the utility model's conductive unit;

[0017] Figure 4 It is a schematic view of the utility model's heat dissipation unit;

[0018] Figure 5 It is an explosion view of the utility model's heat dissipation unit;

[0019] Figure 6 It is a schematic view of the utility model's heating unit;

[0020] Figure 7 It is an explosion view of the utility model's heating unit;

[0021] Figure 8 It is a sectional view of the utility model's heating unit;

[0022] Figure 9 It is a connection schematic view of the utility model's conductive unit and heating unit. DETAILED DESCRIPTION

[0023] The structure of the utility model will be further explained in combination with the drawings and by examples. It should be noted that the examples are narrative rather than limiting.

[0024] A heating core structure for vehicle air heating, please see Figures 1-9 The application point is that it comprises a conductive unit 1, a heat dissipation unit 2 and a heating unit 3.

[0025] The conductive unit 1 mainly comprises a plastic support 1.1 and a copper bar assembly 1.2, the copper bar assembly 1.2 and the plastic support 1.1 are integrated, the copper bar assembly 1.2 is arranged at the corresponding position during injection molding of the plastic support 1.1, and they are injection molded together, the copper bar assembly 1.2 is fixed inside the plastic support 1.1, and the plastic support 1.1 plays a fixing and insulating role on the copper bar assembly 1.2. Each copper bar 1.2 has a positive electrode access hole and a negative electrode access hole at both ends, which are used for realizing the fixing and welding of the fixed rod 3.4 of the heating unit. The copper bar assembly is provided with one connecting claw at both ends and the middle part, the connecting claws at both ends are positive electrode input ends 1.2.1, the connecting claw at the middle part is a common negative electrode output end 1.2.2, and the three connecting claws are used for being connected with the control panel of the vehicle air heating.

[0026] The number of the copper bars 1.2 is determined by the heating unit 3, each group of the heating unit corresponds to one copper bar, has a positive electrode input jack and a negative electrode output jack, and mainly conducts electricity to the heating unit 3. The number of the plastic supports 1.1 is determined by the copper bars 1.2, the plastic supports can be injection molded into an integrated or dispersed structure, the integrated structure is that all the copper bars correspond to one plastic support 1.1, and the dispersed structure is that several or single copper bars 1.2 correspond to one plastic support 1.1. In the utility model, the integrated plastic support structure is preferably adopted

[0027] The heat dissipation unit 2 mainly comprises a finned tube 2.1 and fins 2.2, mainly plays a role of uniform heat dissipation and increasing heat dissipation area, wherein the fins 2.2 are fixed in the finned tube 2.1 in a welding manner, the shape of the fins 2.2 is wavy, so that the heat dissipation is more uniform, and the shape of the fins 2.2 can also be changed into a zigzag shape, a telephone line shape, a Great Wall line shape and the like according to needs, in the utility model, the finned tube 2.1 is preferably a rectangular tube with opposite sides open, mainly fixes and protects the fins 2.2. Similarly, the shape of the finned tube 2.1 can also be changed according to needs, and can be changed into a cylindrical shape, an elliptical shape and the like, and the opening position of the finned tube can also be changed according to needs.

[0028] The heating unit 3 is in the shape of a flat rectangle as a whole, mainly comprising an aluminum shell 3.1, magnesium powder 3.2, resistance wire 3.3, lead rod 3.4, sealing glue 3.5 and rubber sleeve 3.6. The resistance wire is wound on the two lead rods, and the two ends are welded with the two lead rods respectively, the fixed resistance wire 3.3 and lead rod 3.4 are put into the aluminum shell 3.1 by a tool, and the number of the resistance wire 3.3 can be added according to the requirement. The magnesium powder 3.1 is wrapped around the resistance wire 3.3 to fix and insulate the resistance wire 3.3, the two ends of the magnesium powder 3.1 are compacted by a tool, and the sealing glue is poured to seal the whole. The rubber sleeve 3.6 is installed in front of the sealing glue 3.5 at the front end of the aluminum shell 3.1 to fix and insulate the lead rod 3.4.

[0029] The heating unit 3 and the heat dissipation unit 2 are connected by gluing or welding, the heating unit 3 and the heat dissipation unit 2 in the drawing are schematic, the number and arrangement mode of the heating unit 3 and the heat dissipation unit 2 can be adjusted according to the space of the production equipment and the requirement of the heating space size, for example, the arrangement mode can be one heating unit 3 and two heat dissipation units 2 or two heating units 3 and one heat dissipation unit 2, etc., the front end of the heating unit 3 and the heat dissipation unit 2 is provided with a sealing gasket 4, which mainly functions to seal, fix and buffer the heating core. The front end of the lead rod of the heating unit 3 is fixed with the copper bar 1.2 of the conductive unit 1 by welding to realize the function of conducting and heating.

[0030] The utility model discloses simple structure, few parts, light in weight, compare the PTC wind warm heater of having, reduce the part structure, reduce the overall structure weight, preparation process is simple, and the cost is low, and can realize mass production.

[0031] The embodiment of the utility model can be applied to the voltage range (high voltage DC: 200-840v, low voltage DC: 9-16V), and the rated power range (3000-10000W) is solved. The existing PTC wind warm heater structure is complex, and the cost is high. The product size, weight and cost are greatly reduced.

[0032] Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit of the utility model and the appended claims, therefore, the scope of the utility model is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A vehicle air heating core structure, comprising a conductive unit, a heat dissipation unit and a heating unit; characterized in that: the heating unit is in the shape of a flat square strip as a whole, and the heating main body adopts an embedded resistance wire, and the front end of the heating unit is externally exposed with a positive electrode lead rod end head and a negative electrode lead rod end head; the conductive unit is composed of a plastic support and a copper bar assembly fixed on the plastic support, and each copper bar constituting the copper bar assembly is provided with a positive electrode input jack and a negative electrode output jack; the copper bar assembly is provided with a connecting claw at each end and in the middle, the connecting claws at the two ends are positive electrode input ends, and the connecting claw in the middle is a common negative electrode output end, the copper bars between the connecting claws at the two ends and the connecting claw in the middle are connected in series, and the three connecting claws constitute external terminals connected with the control panel of the vehicle air heater; the heat dissipation unit is composed of a finned tube and fins inserted and welded in the finned tube, and the finned tube adopts a rectangular tube with openings on opposite sides; a plurality of heating units and a plurality of heat dissipation units are connected by adhesion or welding in a manner of alignment at both ends and sequential spacing, a sealing gasket is installed at the front end of the plurality of heating units and heat dissipation units, and lead rod perforations are provided on the sealing gasket; the conductive unit is arranged in parallel at the front end of the sealing gasket, the number of copper bars of the copper bar assembly is consistent with the number of heating units, the positive electrode lead rod end head and the negative electrode lead rod end head of the plurality of heating units pass through the corresponding lead rod perforations on the sealing gasket, and are respectively inserted and matched with the positive electrode input jack and the negative electrode output jack of the corresponding copper bars on the conductive unit and are welded.

2. The air heating core structure for vehicle according to claim 1, characterized by: the heating unit comprises an aluminum shell, magnesium powder, the resistance wire, lead rods and a rubber sleeve; the resistance wire is wound on the two lead rods and is welded at both ends to the two lead rods; the two lead rods are inserted in parallel in the aluminum shell in a manner of front end exposure, the magnesium powder is filled in the periphery of the two lead rods in the aluminum shell, the two ends of the aluminum shell are filled with sealing glue for sealing the magnesium powder, and the rubber sleeve is installed in front of the sealing glue at the front end of the aluminum shell.

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