air conditioner

Abstract

The invention provides an air conditioning device (100). The air conditioning device (100) comprises a refrigerating fluid circulating loop (A) and a heat medium circulating loop (B). The refrigerating fluid circulating loop (A) is provided with a compressor (10), a first refrigerating fluid flow path switching device (11), multiple thermal-medium heat exchangers (25), a first throttling gear (26) and a heat source side heat exchanger (12), wherein refrigerating fluid circulates among the devices to form refrigerating circulation. The heat medium circulating loop (B) is provided with the multiple heat-medium heat exchangers (25), a pump (31) and multiple utilization side heat exchangers (35), wherein a heat medium circulates among the devices. The air conditioning device is further provided with a heat medium energy storage part (60) connected to the heat medium circulating loop (B) and used for storing the heat medium, an energy storage part inner heat exchanger (25c) connected to the refrigerating fluid circulating loop (A) for heating or cooling the heat medium in the heat medium energy storage part (60) through supplied heat source side refrigerating fluid, and delivering the heated and stored heat medium which is heated and stored in the heat medium energy storage part (60) to the utilization side heat exchangers (35) requiring heating operation or delivering the cooled and stored heat medium which is cooled and stored in the heat medium energy storage part (60) to the utilization side heat exchangers (35) requiring refrigerating operation.

Description

[0001] This application is a divisional application for an invention patent application with the international application date of June 16, 2011, the international application number of PCT / JP2011 / 003448, the national application number of 201180071153.X, and the invention name of "air conditioning device". technical field [0002] The present invention relates to an air conditioner suitable for use in, for example, a multi-unit air conditioner for a building. Background technique [0003] The air conditioner has a configuration in which a heat source unit (outdoor unit) is arranged outside a building, and an indoor unit is arranged inside a building, as in a multi-unit air conditioner for a building. The refrigerant circulating in the refrigerant circuit of such an air-conditioning apparatus radiates heat (absorbs heat) to the air supplied to the heat exchanger of the indoor unit, and heats or cools the air. Then, the heated or cooled air is sent to the space to be air-cond...

AI Technical Summary

Problems solved by technology

Therefore, in the technology described in Patent Document 3, not only is it an expensive system corresponding to the number of pumps, but also the noise is large, so it is not a practical structure.

[0025] In addition, since the heat exchanger through which the refrigerant flows is arranged near the indoor unit, there is a possibility that the refrigerant may leak in the room or in the vicinity of the room.

[0026] In the technology described in Patent Document 4, since the primary refrigerant after the heat exchange flows into the same flow path as the primary refrigerant before the heat exchange, when multiple indoor units are connected, each indoor unit cannot function properly. maximum capacity, become a structure that wastes energy

[0027] In the technology described in Patent Document 5, there is no problem when a single refrigerant or a near-azeotropic refrigerant is used as a refrigerant, but when a non-azeotropic mixed refrigerant is used as a refrigerant, the refrigeration When the refrigerant-heat medium heat exchanger is used as an evaporator, the heat medium such as water may freeze due to the temperature gradient between the saturated liquid temperature of the refrigerant and the saturated gas temperature

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