Air heating PTC (Positive Temperature Coefficient) performance optimization structure of automobile air conditioning cabinet
By optimizing the heat dissipation structure of the air-heated PTC and adopting a symmetrical arrangement of heat dissipation fins and louvers, the flow field is improved to centrifugal diffusion, which solves the problems of insufficient heating capacity and poor temperature uniformity of air-heated PTC in new energy vehicles, and achieves more efficient heat diffusion and temperature uniformity.
Patent Information
- Application Number
- CN202520209039.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-08
AI Technical Summary
Traditional PTC heating structures in new energy vehicles suffer from limitations in heating capacity, resulting in insufficient heat output and poor temperature uniformity.
The heat dissipation structure of the air-heated PTC is optimized by adopting a symmetrical arrangement of heat dissipation fins and louvers to improve the flow field to centrifugal diffusion, thereby enhancing heat diffusion and air mixing.
Increase heating capacity, reduce weight, improve air outlet temperature uniformity, and enhance air mixing effect within the same boundary.
Smart Images
Figure CN223672217U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of automobile air conditioner, and relates to a wind warm PTC performance optimization structure of automobile air conditioner box. BACKGROUND
[0002] With the popularity of new energy electric vehicles, the passenger cabin heating source has become a topic of industry discussion, and water heating PTC and wind heating PTC have emerged as the times require. After industry application verification, water heating PTC has obvious disadvantages as a heating source of the passenger cabin: slow heating and high cost. Therefore, wind heating PTC has become an irreplaceable heating source. The wind heating PTC structure includes a controller, a high-low voltage plug-in component and a heating core. The heating core includes a heating body, a heat sink, a partition plate and a frame. The wind heating PTC is assembled in the air conditioner box as a heating source, and the working requirement is to pass high-voltage electricity only. The heating core generates heat under the action of high voltage, and the wind blows the heat to the vehicle interior.
[0003] New energy vehicles have three requirements for parts compared with traditional fuel vehicles: energy saving, small size and light weight. Obviously, the traditional structure and process cannot meet the requirements of new energy vehicles, especially the pursuit of spacious and super-large passenger cabins of new energy vehicles. The requirement for the structure of the air conditioner box is becoming more and more compact, and the assembly boundary reserved for the wind heating PTC is becoming smaller and smaller, but the demand for heating capacity is not decreasing. Therefore, how to further improve the heating capacity of the wind heating PTC under the limited boundary has become a technical difficulty that many manufacturers urgently need to solve. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the utility model aims to solve the above problems, and provides a wind warm PTC performance optimization structure of automobile air conditioner box. By optimizing the heat sink structure of the wind warm PTC, the technical problem that the heating capacity of the traditional air conditioner wind warm PTC cannot meet the requirement due to the limited boundary can be effectively solved, and the temperature uniformity can be effectively improved.
[0005] To achieve the above purpose, the utility model provides the following technical scheme:
[0006] A wind warm PTC performance optimization structure of automobile air conditioner box, including a heat sink and a heating strip, the heat sink is arranged on both sides of the heating strip; the heat sink includes heat sink strips fixedly welded on both sides of the connecting plate, the heat sink strip includes a plurality of heat sink fins extending along the length direction of the heating body and reciprocally bent; at least one group of window structures is arranged on each heat sink fin along the width direction of the heat sink strip, each group of window structures includes two louver windows arranged at intervals, the blades of the two louver windows are oppositely inclined, and are symmetrically arranged; the window structures on the adjacent two heat sink fins are also symmetrically arranged.
[0007] Further, the included angle between the blades of the louver window and the heat sink fin is 30-40°.
[0008] Further, the heat generating strips are multiple, arranged in parallel with intervals, and share a heat sink between two adjacent heat generating strips.
[0009] Further, the connecting plate is made of 1mm thick aluminum strip.
[0010] Further, the heat generating strips are in wave shape, the wave troughs are welded on the connecting plate, and the vertical height between the wave crest and the connecting plate is H; the projection height of the window structure on the vertical line of the connecting plate is 0.6H, and the distance on both sides of the projection corresponds to the wave crest and the wave trough.
[0011] Further, when the heat generating strips are flattened, the distance between the opposite window structures on the adjacent heat dissipation fins is equal.
[0012] The beneficial effects of the utility model lie in:
[0013] 1. The window structure used in the utility model changes the flow field after the wind enters the wind warm PTC, and the flow field changes from traditional straight in and straight out to straight in and centrifugal diffusion out, so that the heat diffusion is increased, and the heating capacity is improved.
[0014] 2. The flow field changes after the window structure, the centrifugal diffusion out wind, and the air mixing is enhanced, and the out wind temperature uniformity is improved.
[0015] 4. Under the same boundary and power, the heat generating core body of the utility model is lighter than the traditional type by about 50g.
[0016] Other advantages, objects and features of the utility model will be described in the subsequent specification to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be realized and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to make the purpose, technical scheme and advantages of the utility model more clear, the preferred detailed description of the utility model will be described below in combination with the drawings, and the drawings are as follows:
[0018] Figure 1 It is the overall schematic view of the automobile air conditioner box wind warm PTC performance optimization structure in the utility model.
[0019] Figure 2 It is the flattened schematic view of the adjacent heat dissipation fins in the utility model.
[0020] Figure 3 It is Figure 2 A-A sectional view in the utility model.
[0021] Figure 4A schematic view of the position of the windowed structure.
[0022] Reference numerals: 1 - heat dissipation strip; 2 - connecting plate; 3 - heat generation strip. DETAILED DESCRIPTION
[0023] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the specification. The present application can also be implemented or applied in other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and the following embodiments and features in the embodiments can be combined with each other without conflict.
[0024] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and the following embodiments and features in the embodiments can be combined with each other without conflict.
[0025] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only for illustrative purposes, and cannot be understood as a limitation of the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0026] Please refer to Figures 1 to 4The utility model provides a kind of automobile air conditioner box wind warm PTC performance optimization structure, including radiator and heating strip 3, radiator is installed in the both sides of heating strip 3;Radiator includes symmetrical fixedly welded in the both sides of connecting plate 2 heat dissipation strip 1, heat dissipation strip 1 includes and reciprocatingly bent and constitutes multiple heat dissipation fins along the length direction of heating body;At least one group of window structure is provided on each heat dissipation fin along the width direction of heat dissipation strip 1, two louver blinds are included in each group of window structure, the blade direction of two louver blinds is opposite, and symmetrically arranged;The window structure on adjacent two heat dissipation fins is also symmetrically arranged.After opening window, flow field changes, centrifugal diffusion outflow is formed after air flow passes through louver blind, increases heat diffusion, improves heating capacity simultaneously, strengthens air mixing, and it is favorable to the uniformity of outflow temperature.
[0027] In the embodiment, the angle between the blade in louver blind and heat dissipation fin, i. e. the window angle in the drawing, can be selected between 30-40 ° according to actual demand.
[0028] In the embodiment, heating strip 3 has multiple, is arranged in interval parallel, and one radiator is shared between adjacent two heating strips 3.Connecting plate 2 is made of 1mm thick aluminum strip.
[0029] Wherein, heat dissipation strip 1 is in the shape of wave, and the wave trough is welded on connecting plate 2, and the vertical height between wave crest and connecting plate 2 is H;The projection height of window structure on the vertical line of connecting plate 2 is 0.6H, and the distance of its projection two sides corresponding with wave crest and wave trough is equal.The spacing of opposite window structure on adjacent heat dissipation fins is equal when heat dissipation strip 1 is flattened, i. e. a1=a2=a3=a4 in the drawing.
[0030] Finally, it is explained that the above embodiment is only used to illustrate the technical scheme of the utility model and is not limited, although the utility model is described in detail with reference to preferred embodiment, ordinary skilled in the art should understand that the technical scheme of the utility model can be modified or equivalent replaced, without departing from the purpose and scope of the technical scheme, and it should be covered in the claim range of the utility model.
Claims
1. A performance optimization structure for PTC air conditioning unit heating in an automotive air conditioning unit, comprising a heat sink and a heating element, characterized in that: The heat dissipating body is arranged on both sides of the heat generating strip; the heat dissipating body comprises heat dissipating strips symmetrically fixed and welded on both sides of the connecting plate, the heat dissipating strips comprise a plurality of heat dissipating fins extending along the length direction of the heat generating strip and reciprocally bent; at least one set of windowing structure is arranged on each heat dissipating fin along the width direction of the heat dissipating strip, each set of windowing structure comprises two louver windows arranged at intervals, the blades of the two louver windows are oppositely inclined and symmetrically arranged; the windowing structures on the adjacent two heat dissipating fins are also symmetrically arranged.
2. The automobile air conditioner box wind-warming PTC performance optimization structure according to claim 1, characterized in that: The included angle between the blades of the louver window and the heat dissipating fin is 30-40°.
3. The automobile air conditioner box wind-warming PTC performance optimization structure according to claim 1, characterized in that: The heat generating strips are arranged in parallel at intervals, and one heat dissipating body is shared between the adjacent two heat generating strips.
4. The automobile air conditioner box wind warm PTC performance optimization structure according to claim 1, characterized in that: The connecting plate is made of 1mm thick aluminum strip.
5. The automobile air conditioner box wind warm PTC performance optimization structure according to claim 1, characterized in that: The heat dissipating strip is in a wave shape, the wave trough is welded on the connecting plate, the vertical height between the wave crest and the connecting plate is H; the projection height of the windowing structure on the vertical line of the connecting plate is 0.6H, and the distance on both sides of the projection corresponding to the wave crest and the wave trough is equal.
6. The automobile air conditioner box wind warm PTC performance optimization structure according to claim 1, characterized in that: When the heat dissipating strip is flattened, the distance between the opposite windowing structures on the adjacent heat dissipating fins is equal.