Air-conditioning system, control method thereof and passenger car air conditioner comprising air-conditioning system

Abstract

The invention provides an air-conditioning system, a control method thereof and a passenger car air conditioner comprising the air-conditioning system. The air-conditioning system comprises a circulation loop composed of a compressor assembly (100), an indoor heat exchanger (4), an outdoor heat exchanger (6) and a throttling element (5), wherein the compressor assembly (100) comprises at least two branch circuits connected in parallel; at least one compressor is arranged on each branch circuit; and the total displacement of the compressors on any branch circuit is not equal to the total displacement of the compressors on the other branch circuits. The air-conditioning system can select to switch on the small-displacement compressors and switch off the large-displacement compressors and the branch circuits of the large-displacement compressors under a low-load condition, so that the air-conditioning system meets the requirements for heating or refrigerating in an indoor environment at low power consumption, power consumption is effectively reduced, and energy is saved. The air-conditioning system can also select to connect the compressors of different displacements and the branch circuits according to required different refrigerating or heating loads and play a role of intelligent optimal control.

Description

technical field [0001] The invention belongs to the technical field of compressors and air conditioners, and in particular relates to an air conditioner system, a control method thereof, and a passenger car air conditioner having the same. Background technique [0002] In the prior art, due to the large changes in the number of members of passenger cars and city buses during the operation process, such as commuting to get off work, holidays and other peak times of passenger flow, the number of passengers is full, and the number of passengers in other time periods is relatively small, and the driving environment is also constantly changing, such as When driving in direct sunlight and in cool weather, the air conditioning load of a passenger car varies greatly. Therefore, the passenger car air conditioner is required to meet the requirements of a wide range of load changes. At present, the passenger car air conditioning unit usually adopts a single large displacement inverter co...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the air-conditioning unit in the prior art consumes a lot of power under the condition of small load, thereby providing an air-conditioning system, its control method and a passenger car air-conditioning system with the same.

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