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Air conditioner, refrigerating system and compressor assembly for refrigerating system

A refrigeration system and compressor technology, which is applied in refrigeration components, air-conditioning systems, refrigerators, etc., can solve problems such as high R&D costs, compressor failure, and compressor compression of liquid refrigerants, so as to improve development efficiency and reliability Effect

Active Publication Date: 2016-04-13
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the liquid density of R290 is very different from that of R410A and R22, and, for compressors with the same displacement, the refrigerating capacity of R290 refrigerant will vary greatly compared with R410A and R22, and the refrigeration system There are restrictions on the amount of refrigerant charge. Therefore, it is impossible to help the development of R290 compressors based on existing technologies, which brings about the problems of long compressor development cycle and high research and development costs. Moreover, if the liquid accumulator is not selected properly , it may cause the compressor to compress liquid refrigerant, and in extreme cases, it will cause the compressor to fail

Method used

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  • Air conditioner, refrigerating system and compressor assembly for refrigerating system
  • Air conditioner, refrigerating system and compressor assembly for refrigerating system
  • Air conditioner, refrigerating system and compressor assembly for refrigerating system

Examples

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Embodiment 1

[0102] Such as figure 1 As shown, the rotary compressor 1 includes a shell and the inner space surrounded by it, and an accumulator 2 is arranged outside the shell, and the inlet of the accumulator 2 is connected to the low-pressure side heat exchanger 3 of the refrigeration system (not shown shown), the outlet of the accumulator 2 is connected with the suction path provided on the shell of the rotary compressor 1 .

[0103] Since R290 is a flammable refrigerant, according to the Chinese national standard GB4706.32-2012, the refrigeration system using R290 has a refrigerant charge limit requirement, and the limit value is calculated by formula (1). Therefore, if the refrigeration system using R290 refrigerant is used in rooms of different sizes, the refrigeration system can calculate the maximum refrigerant charge limit requirement according to the formula (1).

[0104] In this embodiment, the accumulator 2 has an internal volume V (ml), and the displacement of the compressor...

Embodiment 2

[0108] In this embodiment, the design volume of the reservoir 2 is according to the formula At this time, the accumulator 2 is relatively small, and when there are strict requirements on the size of the accumulator 2 of the compressor 1, or when the refrigerant charge of the refrigeration system is lower than the limit value, it can better meet the requirements. requirements, and has the advantage of low cost.

[0109] Wherein, the design volume of the liquid reservoir 2 is selected according to the formula:

[0110]

[0111] Since other structures of the rotary compressor 1 in this embodiment are the same as the corresponding structures of the rotary compressor 1 in Embodiment 1, details are not repeated here.

[0112] In the foregoing embodiments, only typical implementations have been listed, and other easy-to-expand implementations, such as the system can be a dual-purpose system for cooling and heating with a four-way valve (such as Figure 5 ), the compressor 1 can...

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Abstract

The invention discloses an air conditioner, a refrigerating system and a compressor assembly for the refrigerating system. The compressor assembly comprises a compressor and a liquid accumulator. The compressor comprises a shell, a motor and a compression mechanism. The motor and the compression mechanism are both arranged in the shell and connected with each other. The liquid accumulator is arranged outside the shell. An outlet of the liquid accumulator is communicated with the interior of the compression mechanism. The volume of the liquid accumulator is V, wherein V meets the condition shown in the specification, h0 is the mounting height of the refrigerating system in a room, and v is the gas displacement of the compressor adopting refrigerant R290. According to the compressor assembly, it can be guaranteed that when the R290 refrigerating system meets the standard limitation requirements for refrigerant charge, the liquid accumulator can meet the use requirements for gas-liquid separation; accordingly, the situation that the compressor compresses liquid-state refrigerant is avoided, and the reliability of the compressor assembly is improved.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to an air conditioner, a refrigeration system and a compressor assembly thereof. Background technique [0002] As an alternative refrigerant to HCFC (hydrochlorofluorocarbon) such as R22, and HFC (hydrofluorocarbon) such as R410A or R407C, hydrocarbon refrigerant R290 (propane) has attracted widespread attention in the industry. However, when R290 is used in a refrigeration system, a very important issue is its high flammability. The Chinese national standard GB4706.32-2012 has requirements to limit the refrigerant charge of the refrigeration system. [0003] Compared with traditional R410A and R22 refrigerants, the refrigerant charge of the R290 refrigeration system with the same capacity is greatly reduced. On a rotary compressor, a liquid accumulator for gas-liquid separation is generally installed. For R410A and R22 refrigerants, when the capacity of the refrigeration sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/00F24F5/00F25B41/40
Inventor 高斌
Owner GUANGDONG MEIZHI COMPRESSOR