Method for processing disorderly closedown caused by partial blockage of inside pipeline of varied refrigerant volume (VRV) air-conditioning chamber

A multi-connected air conditioner and indoor unit technology, applied in the testing of machines/structural components, heating methods, space heating and ventilation, etc., to achieve the effect of ensuring operation

Active Publication Date: 2014-04-16
NINGBO AUX ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a treatment method to solve the problem of shutdown due to partial blockage of the inner pipeline of VRV multi-connected air conditioner

Method used

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Embodiment Construction

[0014] The method for dealing with system pressure overpressure faults caused by blockage of indoor pipelines of VRV multi-connected air conditioners of the present invention will be further described in conjunction with the accompanying drawings and the one-to-four VRV multi-connected air-conditioning system (refrigerant R410A) in the actual air-conditioning project.

[0015] 1) Determine the indoor unit causing the fault:

[0016] The operating mode of the one-to-four VRV multi-connected air conditioner is the heating mode, and the outdoor ambient temperature is about 7°C. When all four indoor units are turned on, the VRV multi-connected air conditioning system operates normally without any failure. But when other indoor units are turned off at night and only one indoor unit in the room is turned on, after the air conditioner has been running for a period of time, for example, after about 10 minutes (that is, T1 is equal to 10 minutes), the air conditioner fails and shuts do...

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Abstract

The invention discloses a method for processing the disorderly closedown caused by partial blockage of an inside pipeline of a varied refrigerant volume (VRV) air-conditioning chamber. The method is simple to examine the disorderly closedown of a VRV air-conditioning system, and is easy to discover the reason of a fault; interior decoration is also finished in actual operation when a VRV air-conditioner is finished installing, so that pipelines are not welded repeatedly as possible, and the pipelines are also not allowed in the field; or else, compensation cost after the decoration is damaged is very high. After the automatically regulated minimum opening degree of an electronic expansion valve is improved, so that the automatically regulated valve opening degree of the electronic expansion valve is matched with the flow rate of a system refrigerant; therefore, the normal operation of the VRV air-conditioning system can be ensured, and the phenomenon of the disorderly closedown, caused by the over-high pressure protection, of the system is avoided.

Description

technical field [0001] The invention relates to the technical field of a VRV multi-connected air-conditioning system, in particular to a processing method for shutting down due to partial blockage of indoor pipelines of a VRV multi-connected air-conditioning system. Background technique [0002] The current VRV (Varied Refrigerant Volume) multi-connected air-conditioning system refers to an air-conditioning system with one outdoor unit driving multiple indoor units. This type of air-conditioning system has relatively high requirements for equipment production and installation. If the welding process of the indoor evaporator components, electronic expansion valve components and branch pipe welding components cannot meet the requirements in the production process or installation process, there will be pipeline welding blockages, such as full blockage, half blockage and partial blockage. Blockage, etc., will easily lead to poor operation of the air conditioning system, and even...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00G01M99/00
Inventor 郑坚江程德威
Owner NINGBO AUX ELECTRIC
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