Patent Application
20130276470
1. Field of the Invention
The invention refers to a non idle air condition system. The non idle air condition system, especially for a vehicle, comprises a blower, a main evaporator, an auxiliary evaporator for a non idle mode and a heater core.
2. Description of the Background Art
Especially commercial trucks use non idle air condition system having a conventional refrigeration system driven by a combustion engine and one refrigeration system operated by an electric compressor for cooling the cabin by stopped combustion engine. Every refrigeration system requires other oil for its refrigeration loop. Consequently, two evaporators are needed.
Conventional HVAC modules are shown in
The problem addressed in this invention is to indicate a non idle air condition system, which needs less space by a high airflow performance.
Therefore, in an embodiment of the present invention, the same condensate drains can be used by the main evaporator and the auxiliary evaporator. Application of only one condensate drains for both the main evaporator and the auxiliary evaporator demands to bring the evaporators closely together for which reason space is reduced in the air condition system. Furthermore, airflow performance reduction is minimized and costs are decreased because of economy of one condensate drains.
In another aspect of invention, the main evaporator and the auxiliary evaporator are assembled face to face with a direct touching between the main evaporator and the auxiliary evaporator. Hence, the space for the HVAC module is reduced more.
In addition, the main evaporator can be mounted in a correct airflow direction while the auxiliary evaporator is mounted in an incorrect airflow direction. The advantage of this arrangement is in a better airflow and a reduced noise level because the pressure drop only minor increases.
Furthermore, the main evaporator and the auxiliary evaporator can be integrated in one heat exchanger. By equal dimensions of the main evaporator and the auxiliary evaporator a compact unit is created which handling during the assembling process is simplified.
In another aspect of the invention, the refrigerant loop of the main evaporator and the refrigerant loop of the auxiliary evaporator can be combined in the heat exchanger. This could be achieved by sizing the individual circuits according to performance requirements. Because of this embodiment retrofit capability of the only one heat exchanger is improved.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
Another embodiment of the invention is depicted in
Both discussed embodiments of the invention have the advantage that only one condensate drains is required for the main evaporator 3 and the auxiliary evaporator 4. An only minor increase of pressure drop allows a better airflow and a reduced noise level. Both systems are retrofit.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.
