Temperature compensation device for speed regulating resistor of automobile air conditioner

CN224419142UActive Publication Date: 2026-06-26SHANGHAI YIHANG AUTOMOBILE PARTS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI YIHANG AUTOMOBILE PARTS
Filing Date
2025-07-12
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The resistance of the speed control resistor in an automotive air conditioning system fluctuates with temperature changes, causing unstable fan speed and affecting cooling or heating performance. Existing technology cannot achieve accurate compensation across the entire temperature range and increases system complexity and cost.

Method used

The thermistor and the compensation circuit board are vertically welded together. Combined with the elastic pressure plate and constant pressure in the connecting bracket, the thermistor and the speed control resistor body are made into zero-gap contact. The heat-conducting plate is directly connected to the heat sink to replace the external heat dissipation circuit. The heat dissipation efficiency is improved by using honeycomb holes and micro-arc oxidation layer. Precise compensation is achieved through the clamping rod and clamping seat structure.

Benefits of technology

This achieves improved fan speed stability across the entire temperature range, reduces system complexity and the number of parts, optimizes heat dissipation, and lowers system costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of automobile air conditioning systems, and discloses a temperature compensation device for an automobile air conditioner speed regulating resistor, which comprises a temperature compensation module, a speed regulating resistor module and a support assembly. The temperature compensation device for the automobile air conditioner speed regulating resistor is characterized in that the lead of the thermistor is vertically welded with the compensation circuit board, the constant pressure exerted by the elastic pressing piece in the connecting support is combined, the thermistor is ensured to be in zero-gap contact with the automobile air conditioner speed regulating resistor body, accurate compensation in the whole temperature range is realized, the stability of the fan rotating speed is improved, the connecting support integrates the compensation circuit board and the spring-driven clamping rod structure, the number of parts is reduced compared with a traditional scheme, the heat-conducting sheet is directly connected with the heat-dissipating sheet to replace the external heat-dissipating circuit, the external circuit design is reduced, the specific surface area can be increased through the honeycomb holes, the natural convection efficiency is improved through the micro-arc oxidation layer, the heat-dissipating effect is optimized, and the system complexity is reduced.
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