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Evaporator and heat exchanger with external loop, as well as heat pump system and air conditioning system comprising said evaporator or heat exchanger

一种热交换器、外部回路的技术，应用在装备排泄装置的蒸发器,冷凝器领域，能够解决不均匀流动、降低效率等问题

Inactive Publication Date: 2006-05-17
DANFOSS AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A particular problem with plate heat exchangers is that the accumulated liquid medium in the lower part of the evaporator causes uneven flow, resulting in reduced efficiency

Method used

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  • Evaporator and heat exchanger with external loop, as well as heat pump system and air conditioning system comprising said evaporator or heat exchanger
  • Evaporator and heat exchanger with external loop, as well as heat pump system and air conditioning system comprising said evaporator or heat exchanger
  • Evaporator and heat exchanger with external loop, as well as heat pump system and air conditioning system comprising said evaporator or heat exchanger

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Embodiment Construction

[0019] A problem with evaporator efficiency is that ideally no liquid should leave the evaporator, that is to say the liquid content of the evaporated medium should be zero, which is difficult to achieve in practice. It is thus an object of the present invention to provide a more efficient evaporator by minimizing the liquid content of the evaporated medium leaving the evaporator.

[0020] Another problem is that the higher liquid content of the evaporated medium increases the wear of the cooperating compressors connected to the evaporator. Thus, another object of the present invention is to reduce the wear of the compressor connected to the evaporator by minimizing the liquid content of the evaporated medium leaving the evaporator.

[0021] A specific problem with plate heat exchangers is that the accumulation of liquid medium in the lower part of the evaporator can cause uneven flow and consequently reduce efficiency. It is thus an object of the present invention to increas...

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Abstract

An evaporator including an evaporating chamber equipped with a drainage. The drainage drains accumulated liquid from the evaporator's lower parts and includes an external expansion driven injector and / or an external pump. The evaporator can be used e.g. in a heat exchanger, e.g. in a heat pump system or air condition system, and the vacuum driven injector can be integrated with an expansion device of the heat exchanger. A condenser can be used together with the evaporator in a heat exchanger of the plate type realizing an integrated superheater / supercooler. This is accomplished by the definition and use of delimited interacting zones through which the cooling medium circulates under heat exchange with itself.

Description

technical field [0001] The present invention relates generally to an evaporator and in particular to an evaporator equipped with a drainage device for increasing its efficiency and reducing the wear of cooperating compressors. The invention also relates to a condenser for use with said evaporator in a plate heat exchanger. Background technique [0002] Evaporators and condensers are, for example, devices for heat exchangers such as elongated tube heat exchangers, plate heat exchangers, spiral heat exchangers and the like. In a plate heat exchanger the medium circulates in alternating plates typically fabricated from metal and brazed together with sealed inlet and outlet tubes to form closed tubes within an assembly of interacting, interconnected plates A system in which a medium circulates under heat exchange in said closed piping system. Published patent application WO00 / 03189A1 describes such a plate heat exchanger in more detail. [0003] Figure 1 shows the working pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B39/02B01D1/00B01D3/00F25B41/00
CPCB01D3/007F25B39/022F25B41/00F25B2341/0011Y02B30/52
Inventor L·佩尔松
Owner DANFOSS AS
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