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Direct-expansion type air-conditioning device

An air conditioning, direct expansion technology, applied in air conditioning systems, space heating and ventilation details, space heating and ventilation, etc., can solve the problems of unreliable oil return, high energy consumption, energy waste, etc. Refrigeration effect, ensure heat exchange efficiency, improve heat exchange efficiency

Inactive Publication Date: 2015-03-18
SUZHOU BSE AIR CONDITIONER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, this type of mechanism has caused serious energy waste, especially in some multi-connected systems, because the refrigerant is not evenly distributed, the oil return effect is not reliable, the energy consumption is high, the efficiency is low, and the life of the compressor is shortened. The impact is also greater

Method used

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Examples

Experimental program
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Embodiment 1

[0026] see figure 1 It is a direct-expansion air-conditioning device disclosed in the present invention, which includes a compressor 1, a condenser 2, a throttling device 3, and an evaporator 4 that are sequentially connected from head to tail to form a circuit; the throttling device 3 in this embodiment And the evaporator 4 is one, of course, according to actual needs, it is also possible to connect a plurality of them in parallel. The evaporator 4 is a partition heat exchanger; the compressor 1 is an oil-free compressor such as a magnetic levitation compressor or a refrigerant gas bearing compressor, and the oil-free compressor fundamentally solves the problem of no need to add lubricating oil. The air-conditioning system has the problems of short compressor life and low refrigeration efficiency caused by insufficient lubricating oil. In addition, since the partition wall heat exchanger is characterized by heat exchange through the partition wall, the cold and hot fluids ar...

Embodiment 2

[0029] see figure 2 , as another embodiment of the present invention, in order to realize the circulation of indoor air and outdoor air while ensuring the heat exchange efficiency of the air conditioning device, the air conditioning device also includes a preheating heat exchanger on the basis of the first embodiment 5. After outdoor fresh air enters from the first inlet 51 of the preheating heat exchanger 5 and exchanges heat with the indoor air flowing into the preheating heat exchanger 5, the first The outlet 52 enters the cooled medium inlet 41 of the evaporator 4, and after the outdoor fresh air is cooled in the evaporator 4, it is discharged into the room from the cooled medium outlet 42 of the evaporator 4, and the indoor air Adjustment; part of the indoor air enters from the second inlet 53 of the preheating heat exchanger 5, and after exchanging heat with the outdoor fresh air in the preheating heat exchanger 5, it flows from the preheating heat exchanger 5 The seco...

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Abstract

A direct-expansion type air-conditioning device, comprising a compressor, a condenser, a throttling gear and an evaporator, which are connected in sequence from end to end to form a loop. At least one throttling gear and at least one evaporator are arranged; the evaporator is a dividing wall type heat exchanger; and the compressor is an oil-free compressor. The utilized compressor is the oil-free compressor, so that a multi-evaporator system can be utilized easily without considering the return of refrigerant oil, and a multi-split air-conditioner system generated by the technique can realize long piping and long-distance refrigeration; in addition, in order to reduce the pressure drop of an air return pipe, a bigger air return pipe can be chosen as possible; therefore, the direct-expansion type air-conditioning device solves a problem that only a smaller air return pipe can be chosen in the traditional unit because of the need of oil returning.

Description

technical field [0001] The invention relates to the technical field of air conditioning devices, in particular to a direct expansion air conditioning device. Background technique [0002] With the continuous improvement of people's living standards, people's pursuit of quality of life is becoming increasingly urgent, and air conditioners have changed from a luxury accessory in the past to a necessity to ensure the quality of life. With the increasing use of air-conditioning, the proportion of air-conditioning energy consumption in the national energy consumption is also increasing year by year. How to improve the efficiency of air-conditioning and reduce power consumption is the relentless pursuit of the industry. [0003] In the traditional air-conditioning system, since the bearings of the driving device are ordinary oil-lubricated bearings, the refrigerant and oil flow in the refrigeration system at the same time. When the refrigerant flow rate continues to decrease, the ...

Claims

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Application Information

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IPC IPC(8): F24F1/00F24F13/30F25B1/00
CPCF24F5/001F24F13/30
Inventor 查晓冬魏辉
Owner SUZHOU BSE AIR CONDITIONER