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Multi-connected air-conditioning unit and oil balancing system thereof

A multi-connected air conditioner and oil system technology, applied to compressors, refrigerators, refrigeration components, etc., can solve problems such as lack of oil, affect the normal operation of the system, and the oil volume of outdoor units cannot be well balanced, so as to maintain Normal operation and good oil quantity

Active Publication Date: 2013-01-23
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During this oil equalization process, the second compressor does not participate in the oil equalization between the units, so that the oil volume between the outdoor units cannot be well balanced, and it is easy to cause a unit in the system to lack oil, affecting the normal operation of the system

Method used

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  • Multi-connected air-conditioning unit and oil balancing system thereof
  • Multi-connected air-conditioning unit and oil balancing system thereof

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Embodiment Construction

[0025] Embodiments of the present invention provide an oil equalization system of a multi-connected air conditioner unit and the multi-connected air conditioner unit. Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. see figure 2 , the oil equalization system provided by the embodiment of the present invention includes more than two sets of units, figure 2 The composition diagram of only one of the units is shown: the connection between the units can be realized by connecting the oil equalization shut-off valves of each group of units to each other.

[0026] Each unit includes at least two compressors, figure 2 A unit of two compressors is shown, the unit comprising a first inverter compressor 111 and a second inverter compressor 112 .

[0027] The oil discharge port of the first frequency conversion compressor 111 is connected in series with the first oil discharge check valve 115 and then connected wit...

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Abstract

The invention provides an oil balancing system of a multi-connected air-conditioning unit. According to the oil balancing system, an outdoor unit comprises two units, and each unit comprises at least two compressors, gas-liquid separators and oil balancing pipes, wherein the gas-liquid separators are connected to air suction ports of the compressors through air suction pipe units; exhaust ports of the compressors are respectively connected with each gas-liquid separator and then are connected with one another in parallel; an oil outlet of each oil separator is respectively connected to each air suction pipe unit; the oil balancing pipes are connected to the gas-liquid separators through oil suction pipes; and the oil balancing pipes of the units are communicated with one another. The invention also provides the multi-connected air-conditioning unit. According to invention, oil in the compressors is discharged to the oil balancing pipes through the oil outlets of the compressors in the units, and all the compressors in the units participate in oil balancing among the units, and therefore, the oil quantity between the outdoor units is better balanced, and the normal operation of the system is maintained.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to an oil equalizing system of a multi-connected air-conditioning unit and the multi-connected air-conditioning unit. Background technique [0002] In multi-connected air conditioning units, the air pipes, liquid pipes and oil equalizing pipes of each unit are usually connected to form a system. figure 1 It shows the composition schematic diagram of one of the units, and the other units connected through the gas pipe, liquid pipe and oil equalizing connecting pipe are not shown. Taking the system composed of two units as an example, see figure 1 , the system oil equalization process consists of two parts: oil equalization between compressors and oil equalization between units: (1) A part of the oil discharged from the first compressor 111 through the oil discharge port directly enters the second suction pipe group 129 Two compressors 112, the oil discharged from the second co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B31/00
Inventor 远义忠国德防毛守博卢大海何建奇
Owner HAIER GRP CORP
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