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Double-tube multifunctional multi-connected air-conditioning system and control method thereof

A multi-connected air-conditioning and multi-functional technology, applied in the field of air-conditioning, can solve the problems of inability to recover waste heat in the computer room, low-frequency operation of indoor air-conditioning compressors, etc., to avoid frosting and defrosting problems, save space and equipment, and ensure cooling effect Effect

Active Publication Date: 2016-12-21
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the existing indoor multi-connected air conditioner and the computer room air conditioner are installed separately, the waste heat in the computer room cannot be recovered, and the indoor air conditioner has problems such as low-frequency operation of the compressor, low-temperature startup, lubrication, energy regulation, etc.

Method used

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  • Double-tube multifunctional multi-connected air-conditioning system and control method thereof

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Embodiment 1

[0033] Such as figure 1 As shown, this embodiment discloses a two-pipe multifunctional multi-connected air conditioning system, including: compressor 1, condenser 3, four-way valve 2, high-pressure gas-liquid separator 4, subcooler 5, and evaporator module ;

[0034] The evaporator module includes: a computer room evaporator 8 for continuous cooling of equipment in the computer room or base station, and at least one indoor evaporator 7 for indoor cooling or heating, the computer room evaporator 8, indoor evaporator The first end of the device 7 is respectively divided into an upper branch and a lower branch, and valves are arranged on the upper branch and the lower branch; the second ends of the machine room evaporator 8 and the indoor evaporator 7 are respectively divided into a left branch With the right branch, the left branch and the right branch are respectively provided with check valves 11 in opposite directions, and the directions of the check valves 11 in each left b...

Embodiment 2

[0044] Such as Figure 2 to Figure 5 As shown, the present invention also discloses the control method of the two-pipe multifunctional multi-connected air-conditioning system described in Embodiment 1. By opening or closing each of the valves to adjust the flow direction of the refrigerant, the following working conditions can be realized:

[0045] Overall refrigeration status: such as figure 2 As shown, the four-way valve 2 is switched to the state where the outlet of the compressor 1 is connected to the first end of the condenser 3, all the valves on the upper branch are opened, and all the valves on the lower branch are closed; the refrigerant coming out of the compressor 1 First pass through the condenser 3 to release heat, then enter the first interface of the high-pressure gas-liquid separator 4, and pass through the third interface of the high-pressure gas-liquid separator 4, the first passage of the subcooler 5, and each of the right The branches respectively enter t...

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Abstract

The invention belongs to the technical field of air conditioners, and discloses a double-tube multifunctional multi-connected air-conditioning system and a control method thereof. The double-tube multifunctional multi-connected air-conditioning system comprises a compressor, a condenser, a four-way valve, a high-pressure gas-liquid separator, a supercooler and an evaporator module. A machine room evaporator in the evaporator module conducts continuous refrigeration, other indoor evaporators need to achieve different indoor temperature controlling states according to needs, and a second throttling device is additionally arranged on a pipeline wherein the machine room evaporator is placed. According to the double-tube multifunctional multi-connected air-conditioning system and the control method thereof, a multi-connected machine and an machine room air conditioner are coupled and can work independently, the problems of small load operation, lubricating, oil returning, frosting, defrosting, starting, stopping and the like of the multi-connected machine are solved, waste heat of the machine room is recovered, the space is saved, and equipment cost is lowered; and the second throttling device enables the machine room evaporator and the indoor evaporators to have different evaporation temperatures, and the refrigeration effect of the machine room evaporator is guaranteed.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a two-control multifunctional multi-connected air conditioning system and a control method thereof. Background technique [0002] With the rapid development of the digital construction of the information industry and the intelligentization of home appliances, the number of computer rooms and base stations has increased rapidly. Due to the large sensible heat load of the data center and the closed enclosure structure, the air conditioning systems of the computer rooms and base stations need to be refrigerated all year round; and the room The air-conditioning system is mainly used for heating in winter and cooling in summer. According to statistics, the energy consumption of air-conditioning in computer rooms and base stations accounts for more than 40% of the total energy consumption; The operation process is relatively independent; in winter and other low-temperature sea...

Claims

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Application Information

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IPC IPC(8): F25B5/02F25B13/00F25B41/04F25B41/06F25B47/00F25B49/02F25B41/20F25B41/30
CPCF25B5/02F25B7/00F25B47/006F25B49/022F25B2313/0233F25B2313/006F25B41/22F25B41/30
Inventor 王飞
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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