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Ammonia pump liquid supply refrigerating system and control method thereof

A technology of a refrigeration system and a control method, which is applied to refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve problems such as worker safety threats and leakage, and achieve a compact ammonia pump liquid supply refrigeration system, reduce volume size, and reduce area effect

Active Publication Date: 2020-12-29
华商国际工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides an ammonia pump liquid supply refrigeration system and its control method, which is used to solve the problem that the liquid receiver in the prior art is prone to leakage due to the large amount of liquid ammonia refrigerant stored, which threatens the safety of the staff. question

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  • Ammonia pump liquid supply refrigerating system and control method thereof
  • Ammonia pump liquid supply refrigerating system and control method thereof
  • Ammonia pump liquid supply refrigerating system and control method thereof

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Embodiment Construction

[0039]The embodiments of the present invention will be described in further detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0040]In the description of the embodiments of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right" , "Vertical", "horizontal", "top", "bottom", "inner", "outer" and other directions or positional relations are based on the positions or positional relations shown in the drawings, and are only for the convenience of description The embodiments of the invention and the simplified description do not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention. ...

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Abstract

The embodiment of the invention provides an ammonia pump liquid supply refrigerating system and a control method thereof. The ammonia pump liquid supply refrigerating system involves a compressor, a condenser, a liquid storage device, an expansion valve, a low-pressure circulating barrel, an ammonia pump, an evaporator and a control system. The exhaust end of the compressor is connected with an inlet of the condenser, and an outlet of the condenser is connected with a liquid inlet of the liquid storage device; an outlet of the liquid storage device is connected with an inlet of the expansion valve, and an outlet of the expansion valve is connected with a liquid supply port of the low-pressure circulating barrel; a liquid outlet of the low-pressure circulating barrel is connected with an inlet of the ammonia pump, and an outlet of the ammonia pump is connected with an inlet of the evaporator; an outlet of the evaporator is connected with a flow return port of the low-pressure circulating barrel, and a gas return port of the low-pressure circulating barrel is connected with an air suction port of the compressor; and the control system is connected with the expansion valve and used for controlling an opening degree of the expansion valve so as to adjust a liquid level height in the liquid storage device. The refrigerating system can effectively reduce the probability of ammonia leakage accidents, and the safety and reliability of the refrigerating system are greatly improved.

Description

Technical field[0001]The invention relates to the technical field of refrigeration, in particular to an ammonia pump liquid supply refrigeration system and a control method thereof.Background technique[0002]Ammonia pump liquid supply refrigeration system is a refrigeration system in the form of liquid pump pressure supply. A low-pressure circulation barrel is set between the evaporation system and the expansion valve. After the liquid in the low-pressure circulation barrel is pressurized by the ammonia pump, the evaporation system is forced to supply liquid. The internal gas and liquid are separated, the separated dry vapor is sucked in by the compressor, and the separated liquid participates in the pump pressurized liquid supply cycle again. Compared with other liquid supply methods, this liquid supply mode makes the refrigerant in the evaporator a two-phase flow, so it is not easy to accumulate oil; secondly, the liquid supply of the ammonia pump is the remaining liquid supply, wh...

Claims

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Application Information

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IPC IPC(8): F25B41/06F25B49/02F25B43/00
CPCF25B49/02F25B43/006
Inventor 李坤李瑞申张蕊孙天慧孙建军
Owner 华商国际工程有限公司
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