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Abstract of EP1197710 Heat pump equipment (10) comprising at least three heat exchangers (16, 24, 28), one (24) of which is intended to be located in an enclosed region (44) and the other two (16, 28) of which are intended to be located outside the enclosed region (44). Each heat exchanger (16, 24, 28) has a delta connection end connected in heat-exchange fluid communication with a delta arrangement (20).
The delta connection end of each heat exchanger (16, 24, 28) is connected to both of the delta connection ends of the other two heat exchangers via the delta arrangement (20). There are three fluid-expansion devices (32, 34, 36), one between the two connections of each pair of adjacent connections of the heat exchangers (16, 24, 28) to the delta arrangement (20). The present invention extends to heat pump equipment comprising at least three heat exchangers (214, 216, 218) connected in a heat-exchange fluid circuit, one (214) of which heat exchangers (214, 216, 218) is intended to be located in an enclosed region (228) and another of which is intended to be located outside the enclosed region (228).
A third one (216) of the heat exchangers is arranged so that air which flows through an aperture (232) in a wall (230) which forms a boundary of the enclosed region (228) passes over the said third heat exchanger (216). The present invention relates to heat pump equipment. In previously proposed heat pump equipment, means have been provided to enable heat exchangers outside a building to be defrosted even while the equipment is being used to transfer heat from outside the building into its interior, in the form of more than one pressure drop and complex solenoid operated valve systems.
This has made the equipment relatively expensive, and, because of its complexity, relatively difficult to diagnose any malfunction occurring within the equipment. Such equipment is disclosed in US-A-5 771 699. This has outside heat exchanger coils designed to change functions independently of one another from that of an evaporator to that of a condenser. This inhibits the accumulation of frost, and/or removes frost from an outside heat exchanger coil when the heat pump is operating in the heating mode without reversing the flow of refrigerant within, or impeding the flow of refrigerant to an inside heat exchanger coil. The present invention seeks to obviate this disadvantage.
Heat pump equipment comprising at least three heat exchangers, one of which is intended to be located in an enclosed region and the other two of which are intended to be located outside the enclosed region. Opening Serial Port Is Failed Skybox Harvey there. Each heat exchanger has a delta connection end connected in heat-exchange fluid communication with a delta arrangement. The delta connection end of each heat exchanger is connected to both of the delta connection ends of the other two heat exchangers via the delta arrangement. There are three fluid-expansion devices, one between the two connections of each pair of adjacent connections of the heat exchangers to the delta arrangement.
The present invention extends to heat pump equipment comprising at least three heat exchangers connected in a heat-exchange fluid circuit, one of which heat exchangers is intended to be located in an enclosed region and another of which is intended to be located outside the enclosed region. A third one of the heat exchangers is arranged so that air which flows through an aperture in a wall which forms a boundary of the enclosed region passes over the said third heat exchanger. Derman My Life As A Quant Pdf To Jpg. What I claim is: 1. TECHNICAL FIELD The present invention relates to heat pump equipment. BACKGROUND ART In previously proposed heat pump equipment, means have been provided to enable heat exchangers outside a building to be defrosted even while the equipment is being used to transfer heat from outside the building into its interior, in the form of more than one pressure drop and complex solenoid operated valve systems.
This has made the equipment relatively expensive, and, because of its complexity, relatively difficult to diagnose any malfunction occurring within the equipment. SUMMARY OF THE INVENTION A first aspect of the present invention seeks to obviate this disadvantage.