Split heat pump air conditioner system

Abstract

The invention discloses a split type heat pump air conditioning system. It uses refrigerant as refrigerant to directly heat or cool indoor air through heat exchangers, install compressors indoors and match the number of compressors with the number of indoor heat exchangers, and each indoor unit is equipped with an oil separator. It eliminates the problem of improper distribution of cooling or heat in each room, realizes cooling and heating on demand for each user, and avoids the hidden safety hazards that the compressor is arranged on the outer wall of the building. In addition, when one indoor unit fails, it will not affect the cooling and heating of other rooms. Under the condition that one room requires cooling and another room requires heating, the two can form a self-closed cycle, energy is transferred within the system, the operating cost is low, and the energy saving effect is particularly obvious. At partial load, the heat exchange area of ​​the outdoor heat exchanger is effectively utilized to reduce the input work of the compressor. The compressor and the indoor heat exchanger are matched one by one, so that each indoor unit operates relatively independently, which not only avoids the problem of uneven oil return of the compressor, but also solves the problem of household metering for cooling and heating in residential quarters.

Description

technical field [0001] The invention relates to a split-type heat pump air-conditioning system, which arranges compressors indoors, and makes the number of compressors equal to the number of indoor units, so as to maintain the relative independence of cooling and heating in each room, increase the comfort of the room, and realize the overall system Put into installation and operation at a lower cost. Each indoor unit is equipped with an oil separator, which not only avoids the problem of uneven oil return from the compressor, but also improves the heat exchange effect of the heat exchanger and reduces energy consumption. Background technique [0002] The air conditioning system adjusts and controls indoor temperature, humidity and cleanliness to meet human comfort and air quality requirements. At the same time, it is also required that the system is energy-saving, occupies a small space, beautifies the appearance of the building, is easy to install...

AI Technical Summary

Problems solved by technology

It also has disadvantages: an outdoor unit must be installed in each room, which greatly damages the appearance of the building; due to the mutual independence of the systems, not only the initial investment increases, but also when the air conditioner in a certain room stops working, other systems cannot use the outdoor unit of the room to replace the air conditioner. Heater to increase the heat exchange area, resulting in idle equipment, which is not conducive to energy saving

The VRV system solves some problems existing in central air-conditioning systems, water-loop heat pump air-conditioning systems or air conditioners, such as comfort, energy saving, energy utilization efficiency, occupied space, etc., but there are still deficiencies or new problems: outdoor units The bulky size brings difficulties to transportation, installation and maintenance, and there are potential safety hazards for outdoor units that are too heavy to be installed on the outer wall of the building; high-power compressors supply cooling to multiple indoor units in parallel, which may cause the distribution of cooling capacity Improper cooling often causes one room to be too cold and another room is too hot; when the temperature rises and falls in each room are inconsistent, the inverter compressor can only adjust the total cooling capacity, but cannot control the change of cooling capacity of each room; Indoor units are required to operate independently, and whether to provide cooling or heating is determined according to user needs; the problem of household metering for cooling and heating in residential quarters is difficult to solve; when the outdoor compressor fails, it will affect the use of all indoor units at the same time; multiple compressors The use of machines in parallel makes it difficult to return oil evenly

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