VRF air conditioning system and control method thereof

A technology of multi-connection system and control method, which is applied in the direction of control input related to air characteristics, air conditioning system, heating and ventilation control system, etc. It can solve the problems of condensation and dripping at the indoor unit, and achieve the effect of improving the comfort of use

Active Publication Date: 2018-01-12
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, one of the objectives of the present invention is to provide a control method of a multi-connected system that can effectively solve the problem of condensation and dripping at the indoor unit caused by frequent oil return of the compressor, improve user comfort, and adopt the Multi-line system controlled by control method

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  • VRF air conditioning system and control method thereof
  • VRF air conditioning system and control method thereof
  • VRF air conditioning system and control method thereof

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Embodiment Construction

[0035] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. To avoid obscuring the essence of the present invention, well-known methods, procedures, procedures, and components have not been described in detail.

[0036] Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0037] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

[0038] In the description of the ...

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Abstract

The invention discloses a VRF air conditioning system and a control method thereof. The VRF air conditioning system comprises a compressor and a plurality of indoor units arranged on a plurality of parallel branches, and each indoor unit comprises a draught fan; and the control method comprises the steps that when the VRF air conditioning system needs oil return in the refrigeration mode, whetherthe indoor unit in the shutdown state reaches the condensation condition or not is judged, the branch where the indoor unit is located is opened, and different control over the draught fan of the indoor unit is carried out according to the judgment result. According to the control method of the VRF air conditioning system, when oil return is needed by a compressor, whether the indoor unit in the shutdown state has the condensation risk or not is judged firstly, different control methods for the draught fan are adopted according to different conditions, and the problem that the compressor happens oil return frequently, and consequently the indoor unit happens condensation and water dropping is solved, and the user using comfort is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a control method of a multi-connection system and a multi-connection system controlled by the control method. Background technique [0002] In the air-conditioning system, after the compressor runs for a period of time, the refrigerating oil will circulate in the system along with the refrigerant, causing the refrigerating oil to remain in the indoor heat exchanger or in the piping between the indoor unit and the outdoor unit. If the refrigerating oil cannot be returned to the outdoor unit in time, the compressor cannot be effectively lubricated and cooled by the refrigerating oil, which affects the performance and reliability of the compressor. Therefore, the air-conditioning system needs to return oil after running for a period of time, so as to bring the refrigerated oil brought out by the compressor back to the compressor to ensure the normal operation of the air-con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/00F24F11/61F24F11/77F24F11/70F24F13/22F25B31/00F25B41/06F24F110/20F25B41/34
CPCF24F11/70F24F11/77F24F13/22F24F2013/221F24F11/86F25B2313/0233F25B2313/0293Y02B30/70F25B31/002F25B49/02
Inventor 焦华超张仕强武连发熊建国周冰黄志光李冬辉邱博
Owner GREE ELECTRIC APPLIANCES INC
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