Shell-tube heat exchanger, air conditioner unit and descaling method
A technology of shell-and-tube heat exchangers and pipelines, which is applied in the fields of shell-and-tube heat exchangers, air-conditioning units and descaling. It can solve the problems of reduced unit life and high energy consumption for chemical descaling, so as to reduce maintenance costs and avoid corrosion. problems, the effect of prolonging the service life
Pending Publication Date: 2020-01-21
GREE ELECTRIC APPLIANCES INC
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[0004] In view of this, the object of the present invention is to provide a shell-and-tube heat exchanger, an air-conditioning unit and a descaling method to solve the problem of large energy consumption and reduced unit life caused by chemical descaling of the shell-and-tube heat exchanger in the prior art. question
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[0043] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0044] figure 1 is a structural schematic diagram of a shell-and-tube heat exchanger shown according to an exemplary embodiment, such as figure 1 As shown, the shell and tube heat exchanger includes:
[0045] The inlet and outlet water circulation pipeline is used to control the flow of the refrigerant in the shell-and-tube heat exchanger in the first direction through its own on-off;
[0046...
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The invention relates to a shell-tube heat exchanger, an air conditioner unit and a descaling method. The shell-tube heat exchanger comprises a water inlet-outlet circulation pipeline, a descaling pipeline and a controller, wherein the water inlet-outlet circulation pipeline is used for controlling a refrigerant in the shell-tube heat exchanger to flow according to a first direction through on andoff of the water inlet-outlet circulation pipeline; the descaling pipeline is connected between a water inlet and a water outlet of the shell-tube heat exchanger, and is used for controlling the refrigerant in the shell-tube heat exchanger to flow according to a second direction opposite to the first direction through on and off of the descaling pipeline; and the controller is used for controlling the water inlet-outlet circulation pipeline and the descaling pipeline to alternately communicate under a descaling mode, so that a pulse-type water wave capable of cleaning scales of a pipe wall isproduced in the shell-tube heat exchanger. According to the technical scheme provided by the invention, physical descaling can be realized, the corrosion problem of the shell-tube heat exchanger caused by chemical descaling is avoided, the service life of the shell-tube heat exchanger is prolonged, the maintenance cost is reduced, and the customer experience is improved.
Description
technical field [0001] The invention relates to the technical field of air-conditioning units, in particular to a shell-and-tube heat exchanger, an air-conditioning unit and a descaling method. Background technique [0002] At present, the mainstream evaporator of the modular machine adopts the shell-and-tube heat exchanger, because the shell-and-tube heat exchanger has high stability, good antifreeze effect, high heat exchange efficiency, mature and relatively simple manufacturing process, and low refrigerant volume and low cost. However, during the use of the shell-and-tube heat exchanger, the scale generated by long-term operation is easy to adhere to the pipeline, and the heat exchange effect of the evaporator will be greatly reduced. At the same time, the resistance of the waterway will increase, and the energy consumption of the user's water pump will increase. [0003] At present, the solution to the scaling of the shell-and-tube evaporator is to add a descaling agent...
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IPC IPC(8): F28D7/16F28F27/02F28G9/00F24F13/30
CPCF28D7/16F28F27/02F28G9/00F24F13/30
Inventor 代园黄嘉中林旭豪魏峰
Owner GREE ELECTRIC APPLIANCES INC