Micro-channel heat exchanger and air conditioner utilizing micro-channel heat exchanger
A micro-channel heat exchanger, cylinder technology, applied in the direction of heat exchanger type, heat exchanger shell, indirect heat exchanger, etc., can solve the problem of uneven distribution of micro-channel heat exchanger, reduce the overall size, improve Heat transfer efficiency and uniform flow distribution
Active Publication Date: 2017-05-31
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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Problems solved by technology
[0005] The present invention aims to design and disclose a microchannel heat exchanger with a new structure, which can effectively improve the problem of uneven distribution of microchannel heat exchangers
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[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] see figure 1 Shown is a schematic structural diagram of the first embodiment of the micro-channel heat exchanger disclosed in the present invention. The micro-channel heat exchanger disclosed in the present invention can achieve uniform distribution of refrigerant in a gas-liquid two-phase mixed state in the micro-channel technical effect....
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Abstract
The invention provides a micro-channel heat exchanger. The micro-channel heat exchanger comprises multiple uniformly-distributed flat tubes and a flow collecting tube communicating with the multiple flat tubes. The flow collecting tube is arranged on one ends of the flat tubes and provided with a flow guide column with a certain height. A refrigerating with a gas-liquid two-phase mixing state flows from one side of the flow guide column, flows through the flow guide column and out to the flat tubes. The refrigerating has the characteristic flow rate u. The outer diameter of the flow guide column d is equal to Re multiplied by mu / u, wherein mu represents the kinematic viscosity of the refrigerating, Re refers to the Reynolds number, and Re is larger than or equal to 40. The invention further discloses an air conditioner provided with the micro-channel heat exchanger. The micro-channel heat exchanger and the air conditioner utilizing the micro-channel heat exchanger have following beneficial effects: by guiding the two-phase refrigerant with the characteristic flow rate to flow through the flow guide column with the set outer diameter, the irregularly-flowing two-phase refrigerant is converted to be an extremely-regular alternating vortex street on a downstream side of the flow guide column, thereby enabling the refrigerant to freely and uniformly flow in the flat tubes downstream.
Description
technical field [0001] The invention relates to the technical field of air conditioning, in particular to a microchannel heat exchanger and an air conditioner using the microchannel heat exchanger. Background technique [0002] Microchannel heat exchangers have been widely used in many industries as condensation heat exchange equipment. Compared with the finned tube heat exchanger widely used in air conditioners at present, the microchannel heat exchanger has a series of advantages of small internal volume, compact structure, high heat exchange efficiency and low material cost. The heat exchanger has the potential to replace the finned tube heat exchanger. However, due to the unique structural characteristics of the microchannel heat exchanger, when it works in the evaporator condition, it is easy to have the problem of uneven refrigerant distribution, which leads to the ineffective use of the heat exchange area, which seriously affects the heat exchange. device efficiency...
Claims
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Login to View More IPC IPC(8): F28D1/053F28F9/02F28F9/22
CPCF28D1/05333F28F9/0265F28F9/22
Inventor 刘晓蕾朱立荣董德智王元宋强国德防刘江彬刘景升
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD