Defrosting system and method and commercial refrigeration display cabinet

A pressure switch and solenoid valve technology, applied in the field of commercial refrigeration display cabinets, can solve problems such as low defrosting efficiency, and achieve the effects of improving market competitiveness, high degree of automation, and simple and convenient operation

Inactive Publication Date: 2021-05-14
QINGDAO HIRON COMML COLD CHAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem of low defrosting efficiency of the existing defrosting system, the present invention proposes a defrosting system and method, which can control all the high-temperature gaseous refrigerant discharged from the compressor into the hot gas bypass branch during defrosting. Realize efficient defrosting of evaporator

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  • Defrosting system and method and commercial refrigeration display cabinet
  • Defrosting system and method and commercial refrigeration display cabinet

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Embodiment Construction

[0043] In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

[0044] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention.

[0045] In the descri...

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Abstract

The invention provides a defrosting system and method and a commercial refrigeration display cabinet. The defrosting system comprises a compressor, an evaporator, a tee joint, a defrosting branch and a refrigeration branch. The defrosting branch is provided with a defrosting heating pipe and an electromagnetic valve, wherein the defrosting heating pipe is connected with the evaporator; and the electromagnetic valve is arranged between the tee joint and the defrosting heating pipe and is used for controlling the on-off states of the defrosting branch. The refrigeration branch is provided with a condenser, a throttling element and a pressure switch valve, wherein the condenser is connected with the tee joint through a condenser connecting pipe; the throttling element is connected with the evaporator; and the pressure switch valve is arranged between the condenser and the throttling element. According to the defrosting system provided by the invention, when the defrosting function is started, the refrigerating branch in the system can be automatically cut off through the combined control of the electromagnetic valve and the pressure switch valve, high-temperature exhaust gas of the compressor completely flows into the defrosting branch, the efficient defrosting function on the outer surface of the evaporator is achieved, and the defrosting efficiency of the display cabinet is effectively improved. And the defrosting period is shortened.

Description

technical field [0001] The invention belongs to the technical field of commercial refrigeration display cabinets, in particular to a defrosting system and method and a commercial refrigeration display cabinet. Background technique [0002] The commercial refrigeration display cabinet is an insulated cabinet with the functions of refrigeration, preservation, display and sales. Customers open the door to pick up items from time to time and staff regularly open the door to replenish goods, so a large amount of ambient high-temperature and high-humidity air enters the cabinet. , resulting in severe frosting on the surface of the evaporator, affecting its heat transfer effect. Defrosting will increase additional energy consumption, how to efficiently defrost has become a key technology to improve the refrigeration performance of display cabinets. [0003] The common defrosting methods include electric heating defrosting, hot gas bypass defrosting and liquid spray defrosting. The...

Claims

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Application Information

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IPC IPC(8): F25B47/02F25B41/20F25B49/02A47F3/04
CPCF25B47/022F25B49/02A47F3/0404
Inventor 宋鲜霞高龙于富林刘国强万鹏刘飞孙佳友
Owner QINGDAO HIRON COMML COLD CHAIN
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