Efficient parallel oil-free multi-machine-head evaporative cooling refrigerating unit with cooling capacity recovery function

Abstract

The invention discloses an efficient parallel oil-free multi-machine-head evaporative cooling refrigerating unit with a cooling capacity recovery function. The efficient parallel oil-free multi-machine-head evaporative cooling refrigerating unit comprises a low-temperature air inlet pipe, one end of the low-temperature air inlet pipe is in communication with the indoor space, the other end of the low-temperature air inlet pipe is connected with the air inlet end of a fan, the air outlet end of the fan is connected with one end of a low-temperature air outlet pipe, one outlet of the low-temperature air outlet pipe is connected with an air inlet of a condenser, the other outlet of the low-temperature air outlet pipe is in communication with the atmosphere, the outlet end of a condensing coil of the condenser is connected with the inlet end of a liquid storage tank, the outlet end of the liquid storage tank is sequentially connected with a parallel evaporator set, one end of a gas-liquid separator and one end of a parallel compressor set, and the other end of the parallel compressor set is connected with the inlet end of the condensing coil of the condenser. In summer, indoor exhaust air is led to an air inlet of the condenser and is dragged by the fan of the condenser, and the water temperature is reduced and the heat exchange efficiency is improved through the condensing coil; and in winter, when the indoor temperature is higher than the environment temperature, the fan opens an external air valve, and exhaust air is directly exhausted into the outdoor atmosphere.

Description

technical field [0001] The invention belongs to the technical field of refrigeration and air conditioning, and in particular relates to a high-efficiency parallel oil-free multi-head evaporative refrigeration unit with the function of cooling capacity recovery. Background technique [0002] The indoor ambient temperature of the edible fungi factory is mostly 5 degrees, 15 degrees, 20 degrees, and 25 degrees according to the different strains. Edible fungus releases carbon dioxide continuously during the growth process, and fresh air needs to be supplied to the room according to the oxygen content in the room, and at the same time, the indoor air is discharged to the outside. [0003] 1. In the form of a direct expansion machine, this equipment is one outdoor unit corresponding to one or two indoor units. The compressor is mostly in the form of an air-cooled scroll or screw, and the air volume required for cooling is large. The exhaust air volume in the room corresponding to...

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Problems solved by technology

The exhaust air volume in the room corresponding to a single outdoor unit cannot meet the cooling demand

The air-cooled fins of the direct expansion machine are all V-shaped open air intake modes, and it is difficult to concentrate the indoor exhaust air to cool the fins. At the same time, it is necessary to add control equipment to each outdoor unit, which increases investment.

[0004] 2. The central air conditioner is generally water-cooled. A machine room and a cooling tower are built at a certain point in the factory area. At this time, the location of the cooling tower is far away from the room to be cooled. If the remote exhaust air is collected for cooling, it needs to be increased. Exhaust fan ducts and exhaust fans, additional investment and operating energy consumption, contrary to the original intention of energy saving

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