Multi-heat source control method, device and absorption refrigeration unit
An absorption refrigeration and control method technology, applied in refrigerators, refrigeration components, adsorption machines, etc., can solve problems such as complex software algorithms, complex opening conditions, occupied computing time and program capacity, etc., to reduce the amount of calculation and improve The effect of adjusting precision
Active Publication Date: 2018-08-14
YANTAI EBARA AIR CONDITIONER
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Problems solved by technology
However, the software algorithm of this control method is relatively complicated, each heat source needs to correspond to a PID control, and the judgment of the opening condition is also relatively complicated, which takes up a lot of computing time and program capacity of the CPU
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[0042] In order to enable those skilled in the art to better understand the solutions of the present invention, 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 are only 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 making creative efforts belong to the protection scope of the present invention.
[0043] seefigure 1 , which is a flow chart of Embodiment 1 of the multi-heat source control method provided by the present invention.
[0044] The multi-heat source control method provided in this embodiment is applied to absorption refrigeration units, and includes at least the following two heat sources: A heat source and B heat source; the gra...
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The invention provides a control method and device for multiple heat sources and an absorption type refrigerating unit. The method comprises the steps that the difference value between the cold water outlet temperature and the cold water target outlet temperature of the absorption type refrigerating unit is obtained; when the difference value is larger than 0, the first refrigerating capacity percentage is obtained through the PID algorithm according to the difference value; when the first refrigerating capacity percentage is smaller than or equal to (a-m)%, a valve corresponding to the heat source A is controlled to be opened, and a valve corresponding to the heat source B is controlled to be closed; when the first refrigerating capacity percentage is larger than (a+m)%, the valve corresponding to the heat source A is controlled to be completely opened, and the valve corresponding to the heat source B is controlled to be opened, wherein m is a preset non-sensible zone value; when the first refrigerating capacity percentage is larger than (a-m)% and smaller than (a+m)%, the valve corresponding to the heat source A and the valve corresponding to the heat source B are kept at the current state; and the calculated amount of a controller is reduced, the adjusting precision is improved, and the cold water outlet temperature can be adjusted to the cold water target outlet temperature as soon as possible.
Description
technical field [0001] The invention relates to the technical field of industrial refrigeration, in particular to a multi-heat source control method, device and absorption refrigeration unit. Background technique [0002] In recent years, with the continuous deepening of energy conservation and emission reduction, the application of absorption refrigeration machines in the industrial field has continued to expand. In order to make full use of energy, absorption refrigeration units with multiple heat sources have continued to increase. [0003] At present, most refrigerators are single heat source machines, so in order to stabilize the cold water outlet temperature, it is only necessary to control the input of a single heat source. [0004] When the types of heat sources of the refrigerator increase, in order to control the stability of the cold water outlet temperature, it is necessary to control multiple heat sources. The current control method is mainly to perform PID con...
Claims
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IPC IPC(8): F25B27/00F25B15/00F25B49/04
CPCF25B15/00F25B27/00F25B49/04F25B2500/19F25B2600/25Y02A30/27Y02B30/62
Inventor 王友良黄金龙王沙千时治青
Owner YANTAI EBARA AIR CONDITIONER