Air-conditioning refrigeration system and oil return control method of air-conditioning refrigeration system

A technology for air-conditioning refrigeration and oil return control, which is used in refrigerators, refrigeration components, refrigeration and liquefaction, etc., and can solve problems such as difficulty in oil return

Active Publication Date: 2020-11-13
博世热力技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this application is to provide an air-conditioning and refrigeration system that can solve the aforementioned problem of difficult oil return and has a simple structure

Method used

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  • Air-conditioning refrigeration system and oil return control method of air-conditioning refrigeration system
  • Air-conditioning refrigeration system and oil return control method of air-conditioning refrigeration system
  • Air-conditioning refrigeration system and oil return control method of air-conditioning refrigeration system

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Embodiment Construction

[0031] In order to help those skilled in the art to understand exactly the subject matter claimed in the present application, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] like figure 1 As shown, the present application provides an air conditioning and refrigeration system, including a compressor 1, a condenser 2, a throttle unit 4 and a plate evaporator 3 that are connected in sequence, and the refrigerant is driven by the compressor 1 to circulate in the air conditioning and refrigeration system, compressor 2, throttling unit 4, plate evaporator 3, and then return to the compressor 1, the air conditioning and refrigeration system also includes a system control unit 5, and the system control unit 5 further includes a throttle control module 51 and a unit control module 52. The flow control module 51 adjusts the opening of the valve member in the throttle unit 4 according to the parameter...

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Abstract

The invention discloses an air conditioner refrigeration system and an oil return control method for the air conditioner refrigeration system. The air conditioner refrigeration system comprises a compressor (1), a condenser (2), a throttling unit (4) and a plate evaporator (3) which sequentially communicate with one another. A refrigerant is driven by the compressor (1) to circulate in the air conditioner refrigeration system and returns to the compressor (1) through the condenser (2), the throttling unit (4) and the plate evaporator (3). The air conditioner refrigeration system further comprises a system control unit (5). The system control unit (5) comprises a throttling control module (51) and a unit control module (52). The throttling control module (51) adjusts the opening of a valve in the throttling unit (4) according to suction vapor superheat and exhaust superheat parameters of the air conditioner refrigeration system, and the unit control module (52) controls operation of the compressor (1) according to the suction vapor superheat and exhaust superheat parameters of the air conditioner refrigeration system.

Description

technical field [0001] The present application relates to refrigeration systems, and in particular, to an air-conditioning refrigeration system and an oil return control method for the system. Background technique [0002] When the air conditioning refrigeration system is running, part of the refrigeration oil will enter the evaporator with the refrigerant. If the air conditioner uses a plate heat exchanger as the evaporator, when the flow rate of the refrigerant in the evaporator channel is low, the refrigeration oil will gradually accumulate on the upper layer of the evaporator liquid surface, thereby forming an oil-rich foam layer. If the system cannot return oil in time, over time, the compressor will lose oil. In addition, with the continuous pursuit of energy saving and emission reduction in the industry, the area of ​​the evaporator is getting larger and larger, and the increase in the area will further reduce the flow rate of the refrigerant in the evaporator, makin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B49/02
Inventor 程振军徐广明
Owner 博世热力技术(上海)有限公司
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