CN-122015400-A - Energy-saving defrosting control method and system for marine refrigeration equipment

CN122015400ACN 122015400 ACN122015400 ACN 122015400ACN-122015400-A

Abstract

The application discloses an energy-saving defrosting control method and system for marine refrigeration equipment, and relates to the field of refrigeration energy conservation, wherein the method comprises the steps of deploying a composite sensor at a key point position on the surface of an evaporator to obtain a dynamic map based on frosting rate-distribution-morphology; the method comprises the steps of sending the target defrosting mode judgment and the oriented defrosting decision to a defrosting control module, determining a defrosting parameter control group, carrying out decision constraint based on attitude constraint conditions of a ship swing angle, carrying out register storage on the defrosting parameter control group, and carrying out driving management and control on a defrosting execution assembly by carrying out control sequence optimization based on refrigerant planning and dynamic priority weight. The application solves the technical problems of low defrosting efficiency, high energy consumption and influence on refrigeration stability caused by the fact that the actual frosting state of the evaporator cannot be accurately matched in the defrosting control of the conventional marine refrigeration equipment, and achieves the technical effects of accurately matching the actual frosting state of the evaporator, improving the defrosting efficiency, reducing the operation energy consumption and guaranteeing the refrigeration stability.

Inventors

DING HUI
ZHOU QINGTING
Lu Tichun

Assignees

江苏凯翔厨房科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260209

Claims (10)

1. An energy-saving defrosting control method for a marine refrigeration device, which is characterized by comprising the following steps: deploying a composite sensor at a key point position on the surface of an evaporator of the refrigeration equipment to obtain a dynamic map based on frosting rate-distribution-morphology; Transmitting the dynamic map to a defrosting control module embedded in the central control of the refrigeration equipment, and executing target defrosting mode judgment and directional defrosting decision to determine a defrosting parameter control group, wherein decision constraint is carried out according to attitude constraint conditions based on the swing angle of the ship; And (3) performing register storage on the defrosting parameter control group, and performing driving management and control on the defrosting execution assembly by performing control sequence optimization based on refrigerant planning and dynamic priority weight.
2. The energy-saving defrosting control method for marine refrigerating equipment as claimed in claim 1, wherein the key points comprise an air inlet side, a fin middle part and an air outlet side, and the composite sensor is a miniature wireless temperature-humidity-imaging type; And according to the composite sensor, performing time sequence acquisition and vector distribution conversion of key points to integrate the key points into the dynamic map, wherein the vector distribution comprises microscopic frost layer thickness, frost layer distribution uniformity and frost crystal morphology.
3. The method for controlling energy-saving defrosting of a marine refrigeration equipment as claimed in claim 1, wherein the defrosting control module comprises: a multi-defrosting mode is deployed, wherein the multi-defrosting mode comprises local reverse circulation, hot gas bypass cooperative cold storage agent spraying and high-frequency pulse electric heating cooperative air flow flushing; Deploying a first judgment threshold according to mode judgment based on the multiple defrosting modes; deploying a defrost decision array according to the multiple defrost mode, wherein the defrost decision array comprises a plurality of defrost decision devices corresponding to the multiple defrost mode; and forming a defrosting control module according to the first judgment threshold and the defrosting decision array.
4. A method of energy efficient defrost control for a marine refrigeration appliance as claimed in claim 3 wherein performing a target defrost mode determination and a directional defrost decision, determining a defrost reference group comprises: the defrosting control module embedded in the refrigeration equipment receives the dynamic map, performs joint judgment based on vector characteristics, and determines a target defrosting mode, wherein the target defrosting mode is a single defrosting mode or a multi-defrosting mode cooperation; Acquiring six-degree-of-freedom motion data of a ship, and determining a ship swing angle; And carrying out directional activation and decision on the defrosting decision array according to the target defrosting mode and the ship swing angle, and determining a defrosting parameter control group.
5. The method of claim 4, wherein the performing directional activation and decision of the defrost decision array according to the target defrost mode and the ship swing angle comprises: excavating the interaction relation between the roll of the ship and the windward side of the evaporator; determining attitude constraint conditions by performing first-order conversion based on the interaction relation and second-order conversion based on a target defrosting mode on the ship swing angle; and according to the target defrosting mode, directionally activating the defrosting decision array, and carrying out mode driving decision by combining the attitude constraint condition to generate the defrosting parameter control group.
6. The method of claim 1, wherein performing a control sequence optimization based on refrigerant planning comprises: storing the defrosting parameter control group into a first register, and predicting a pressure balance point after refrigerant migration based on the real-time working condition of an evaporator before the defrosting mode is activated; Dynamically planning a refrigerant recovery path and flow according to the pressure balance point to generate refrigerant planning parameters; And adding the refrigerant planning parameters into the defrosting parameter control group.
7. The method of energy saving defrost control for a marine refrigerator according to claim 6, wherein performing a control sequence optimization based on dynamic priority weights comprises: Setting dynamic priority weights, wherein the dynamic priority weights are defined based on real-time ship power grid quality, a library Wen Pianli degrees and frosting rate; And if the defrosting parameters are coordinated in a plurality of defrosting modes, performing execution sequence and resource allocation on the defrosting parameter groups by real-time quantification of weight scores based on the dynamic priority weights.
8. The method of energy saving defrost control for a marine refrigerator as claimed in claim 6, wherein driving control of the defrost performing assembly comprises: establishing communication interaction between the first register and a defrosting execution assembly; generating a first reference control sequence of a first stage according to the defrosting reference control group in the first register, wherein the first reference control sequence is provided with a space-time code mark; Generating a multi-path control instruction based on the first reference control sequence, and performing cooperative control on the defrosting execution assembly.
9. The method for controlling energy-saving defrosting of a refrigerating apparatus for a ship as claimed in claim 8, wherein after driving the defrosting performing unit, comprising: after the single defrosting based on the first reference control sequence is finished, acquiring residual data of a frost layer and a library Wen Huifu curve as real-time defrosting data; And carrying out iterative optimization on the defrosting parameter control group according to the real-time defrosting data.
10. A marine refrigeration appliance energy saving defrost control system for implementing a marine refrigeration appliance energy saving defrost control method according to any one of claims 1-9, the system comprising: The dynamic map acquisition module is used for deploying a composite sensor at a key point position on the surface of an evaporator of the refrigeration equipment to acquire a dynamic map based on frosting speed-distribution-morphology; The defrosting parameter control group determining module is used for sending the dynamic map to a defrosting control module embedded in the central control of the refrigeration equipment, executing target defrosting mode judgment and directional defrosting decision, and determining a defrosting parameter control group, wherein decision constraint is carried out by using attitude constraint conditions based on the swing angle of the ship; And the defrosting control module is used for storing the defrosting parameter control group in a register, and driving and controlling the defrosting execution assembly by optimizing a control sequence based on refrigerant planning and dynamic priority weight.

Description

Energy-saving defrosting control method and system for marine refrigeration equipment Technical Field The application relates to the field of refrigeration energy conservation, in particular to an energy-saving defrosting control method and system for marine refrigeration equipment. Background The frosting of the evaporator of the marine refrigeration equipment can directly reduce the heat exchange efficiency, increase the energy consumption and influence the refrigeration quality, and is a key problem which must be solved in the stable and efficient operation of the marine cold chain system. The current main flow technology for solving the problem of evaporator frosting mostly adopts timing defrosting or single temperature threshold to trigger defrosting, and specifically realizes that electrothermal defrosting or hot gas defrosting is started according to a fixed time period, or the whole-area unified defrosting action is triggered only after a single temperature point at the outlet of the evaporator reaches a set value. The existing method depends on fixed period or single-point temperature judgment, the actual distribution, thickness and growth rate difference of a frost layer at different positions of an evaporator cannot be perceived, the defrosting action is started too early to cause energy waste or is started too late to cause heat exchange deterioration, and meanwhile, the unified defrosting of the whole area can cause inefficacy consumption and fluctuation of the warehouse temperature for the area without defrosting. In the related art at the present stage, the defrosting control of the marine refrigeration equipment has the technical problems that the defrosting efficiency is low, the energy consumption is high and the refrigeration stability is influenced because the actual frosting state of the evaporator cannot be accurately matched. Disclosure of Invention The application provides an energy-saving defrosting control method and system for marine refrigeration equipment, which adopt the technical means that a composite sensor is deployed at the key point of the surface of an evaporator to obtain a dynamic map with frosting rate-distribution-form, the dynamic map is sent to a central control embedded defrosting control module, a target defrosting mode is judged by combining the attitude constraint condition of a ship swing angle and a defrosting parameter control group is decided and determined, the defrosting parameter control group is stored in a register, and a defrosting execution assembly is driven to complete defrosting control and the like through a refrigerant planning and dynamic priority weight optimizing control sequence, so that the technical problems that the actual frosting state of the evaporator cannot be accurately matched, the defrosting efficiency is low, the energy consumption is high and the refrigeration stability is influenced in the existing defrosting control of the marine refrigeration equipment are solved, and the technical effects of accurately matching the actual frosting state of the evaporator, improving the defrosting efficiency, reducing the running energy consumption and guaranteeing the refrigeration stability are achieved. The application provides an energy-saving defrosting control method for a marine refrigeration device, which comprises the steps of deploying a composite sensor at a key point of the surface of an evaporator of the refrigeration device, obtaining a dynamic map based on frosting rate-distribution-form, sending the dynamic map to a defrosting control module embedded in a central control of the refrigeration device, executing target defrosting mode judgment and directional defrosting decision, determining a defrosting parameter control group, wherein decision constraint is carried out on the defrosting parameter control group according to attitude constraint conditions based on a ship swing angle, storing a register, and carrying out driving management and control on a defrosting execution assembly by carrying out control sequence optimization based on refrigerant planning and dynamic priority weight. In a possible implementation mode, the method comprises the following steps that the key points comprise an air inlet side, a fin middle part and an air outlet side, the composite sensor is of a miniature wireless temperature-humidity-imaging type, and the time sequence acquisition and the vector distribution conversion of the key points are executed according to the composite sensor and integrated into the dynamic map, wherein the vector distribution comprises microscopic frost layer thickness, frost layer distribution uniformity and frost crystal form. In a possible implementation manner, the defrosting control module is used for deploying a multi-defrosting mode, wherein the multi-defrosting mode comprises local reverse circulation, hot gas bypass cooperative cold storage agent spraying and high-frequency pulse electric heating cooperative air