Heat pump with improved performance in heating mode

Details Heat pump with improved performance in heating mode Heat pump with improved performance in heating mode

F - Mech Eng,Light,Heat,Weapons

24

D

F24D 19/10 (2006.01) F25B 13/00 (2006.01)

Patent

CA 2529469

A heat pump having an indoor coil (13) that operates as a condenser when the system is in a heating mode and an outdoor coil (12) that operates as an evaporator when the system is in the heating mode. A variable speed indoor fan (23) is used to move supply air over the indoor coil and a temperature sensor (29) is arranged to provide ambient outdoor temperature data to a programmable computer (30). The computer contains a schedule for continuously adjusting the speed of the indoor fan (23) in response to changes in the ambient temperature so as to maintain the temperature of the supply air at a constant level. In doing so, the compressor discharge pressure is also maintained within allowable limits and is held substantially constant.

L'invention concerne une pompe à chaleur comprenant un échangeur intérieur (13) servant de condenseur lorsque le système est en mode chauffage et un échangeur extérieur (12) servant d'évaporateur lorsque le système est en mode chauffage. Un ventilateur intérieur à vitesse variable (23) est utilisé pour amener l'air extérieur à travers l'échangeur intérieur et un capteur thermique (29) est utilisé pour fournir à un ordinateur programmable (30) des données relatives à la température extérieure. L'ordinateur contient un programme permettant d'adapter continuellement la vitesse du ventilateur intérieur (23) en réponse à des variations dans la température ambiante, afin de maintenir la température de l'air à un niveau constant. Pour ce faire, la pression de refoulement du compresseur est également maintenue dans des limites acceptables et à un niveau sensiblement constant.

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