Water source heat pump three-tube type heat recovery multi-online air conditioning system

Abstract

The invention relates to a water source heat pump three-tube type heat recovery multi-online air conditioning system, comprising a compressor, four-way valves, an outdoor heat exchanger, a water pump and a water storage tank as well as more than one indoor heat exchanger, electronic expansion valve, branch pipe and solenoid valve, wherein the compressor, the outdoor heat exchanger and the indoor heat exchangers are connected into a circuit by virtue of the four-way valves, the electronic expansion valves, the branch pipes and the solenoid valves, and more than two four-way valves are adopted. One side connecting pipe of each four-way valve is connected with an air-returning pipe by virtue of a capillary tube, and exhausted air is cut off when an exhaust pipe is communicated with the side connecting pipe. More branched pipes are arranged in the air conditioning system provided by the invention, thus more indoor heat exchangers can be connected. The water source heat pump technology and the three-tube type multi-online heat pump air conditioning technology are combined, and water is taken as a cold hot source to exchange heat with the outdoor heat exchanger. The machine set of the system provided by the invention has a compact structure, thus the volume is reduced; and the system is easy to mount and can be mounted in a room, thus the length and height of a refrigerant piping are reduced, and the attenuation of system capability is effectively reduced.

Description

Water source heat pump three-pipe heat recovery multi-connected air conditioning system technical field The invention relates to a water source heat pump three-pipe heat recovery multi-connected air conditioning system. Background technique Chinese Patent Document No. CN200979258Y discloses a three-pipe heat recovery air conditioning system, including an outdoor unit system and an indoor unit system. The outdoor unit system includes a compressor, a condenser, a four-way valve, a low-pressure tank, an outdoor unit electronic expansion valve, High-pressure pipes, medium-pressure pipes, low-pressure pipes and cut-off solenoid valves are respectively arranged on the corresponding pipes. The indoor unit system includes several indoor units, three-way switching devices and throttling components. The refrigerant outlet of the compressor passes through the cut-off solenoid valves respectively. and the high-pressure pipe are connected to the A port of the three-way switching device...

AI Technical Summary

Problems solved by technology

Compared with ordinary multi-connected air-conditioning systems, this system adds high-pressure air pipes, and the indoor and outdoor sides are connected through three pipes; this system can not only realize the cooling and heating functions of ordinary multi-connected air-conditioning systems, but also realize simultaneous cooling and heating. The heating function recovers the heat that originally needs to be discharged outdoors to the area that needs heating, which is environmentally friendly and energy-saving; however, because it uses air as the cold and heat source of the outdoor unit heat exchanger, there are certain restrictions on installation, and it can only be installed in Ventilated places such as the roof or the ground or floor balconies, and there are problems such as large volume, loud noise, and poor heating effect at low temperature

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