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A kind of multi-line cleaning method

A multi-line and cleaning technology, applied in the field of multi-line cleaning, can solve the problems of high cost of multi-line cleaning and incomplete cleaning.

Active Publication Date: 2020-02-28
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of high cleaning cost and incomplete cleaning of the existing multi-lines, the present invention proposes a multi-lines cleaning method, which can solve the above problems

Method used

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  • A kind of multi-line cleaning method
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  • A kind of multi-line cleaning method

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Experimental program
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Embodiment 1

[0032] Embodiment 1, this embodiment proposes a multi-line cleaning method, such as figure 1 shown, including the following steps:

[0033] S1. The off-line experiment detects the oil quantity Q contained in the system, and the time T required to clean the oil quantity Q in the experimental record, and calculates the time required to clean the unit oil quantity t=T / Q;

[0034] S2. Estimate the current system oil quantity Q1, and calculate the time T1 required to clean the current system oil quantity Q1 according to the time required per unit oil quantity t=T / Q, where T1=Q1*t;

[0035] Calculate the time t required to clean a unit of oil through offline experiments. Since the refrigerant flow rate in the pipeline is basically constant when the compressor is running at a fixed frequency, so when updating and filtering other systems When using the off-line experimental test to calculate the time t required to clean a unit of oil as a reference, it can be concluded that the clean...

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PUM

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Abstract

The invention discloses a multi-split cleaning method which comprises the following steps: (1) an offline experiment detects the oil content Q of a system, the required time T for cleaning the oil quantity Q fully is recorded in the experiment, and the required time t for cleaning the unit oil quantity is calculated according to a function that t is equal to T / Q; (2) the current system oil quantity Q1 is estimated, the required time T1 for cleaning the current system oil quantity Q1 is calculated according to the required time t which is equal to T / Q for cleaning the unit oil quantity t, wherein T1 is equal to Q1*t; and (3) a controller receives a cleaning command, a speed increasing renewing and filtration step is carried out, and a multi-split machine is controlled to run in a refrigeration mode. According to the multi-split cleaning method, no on-line system is required to be mounted again, and the multi-split machine is controlled to accomplish cleaning in a running process; through computing the oil content of the system, the cleaning time can be set precisely, the waste of time and energy sources due to the fact that the set cleaning time for cleaning thoroughly is too long can be avoided, and used oil can be cleaned thoroughly.

Description

technical field [0001] The invention belongs to the technical field of air conditioner cleaning, and in particular relates to a multi-line cleaning method. Background technique [0002] Around 2000, commercial multi-split units slowly entered the market. Commercial multi-split machines have changed from the initial stand-alone 8HP and 10HP to today’s stand-alone 26HP. From fixed frequency to full frequency conversion, the refrigerant has also been updated from R22 to R410A system. The technology has experienced Substantial upgrades, and the first batch of multi-line users, the units have been used for more than ten years, and the performance, energy efficiency, and unit reliability have fallen behind obviously, and they have entered the update stage. If ordinary models are used instead, the internal structure of the original building will be destroyed, a large number of discarded piping components will be generated, and the normal work of existing owners will be affected. In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B43/00F25B49/02F25B31/00
CPCF25B31/002F25B43/003F25B49/02F25B2400/01F25B2400/23F25B2500/06
Inventor 毛守博李君飞何建奇隋志蔚
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD