A low-temperature heat pump antifreeze control intelligent sensing adjustment system and method

Abstract

The present invention provides an intelligent sensing and regulating system and method for antifreeze control of a low-temperature heat pump. The system acquires frost identification information of the heat exchanger and infrared temperature distribution of the heat exchanger by collecting infrared images of the heat exchanger plates of the heat exchanger and performing image recognition. The system monitors and acquires the multi-point temperature and heat exchanger flow of the heat pump heat exchanger. The system analyzes and determines the frost identification information of the heat exchanger plates and infrared temperature distribution of the heat exchanger plates. The system analyzes and determines the multi-point temperature and heat exchanger flow of the heat exchanger. The system intelligently senses abnormalities of the low-temperature heat pump system based on the identification and determination information, controls the triggering of frost elimination start-up signals and controls the triggering of temperature distribution abnormality alarms. The system controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger plates according to the frost elimination start-up signals. The system antifreezes the low-temperature heat pump system according to the control triggering of temperature distribution abnormality alarms and combines the heat exchanger temperature adjustment control signals and the heat exchanger flow control signals to adjust the energy utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy utilization detection intelligent control and regulation, and more specifically, to a low-temperature heat pump antifreeze control intelligent perception regulation method and system. Background Art

[0002] The coordination of various parts of the low-temperature heat pump system for ultra-low temperature operation and adaptation to ultra-low temperature environment is very critical; the existing refrigeration system has low efficiency and has the problem of difficult anti-freezing; the key to the ultra-low temperature heat pump system lies in anti-freezing control and improving system efficiency; specific problems include: how to monitor the frost on the heat exchanger and the temperature of the heat exchanger, the temperature of the heat exchanger and the flow rate of the heat exchanger, how to determine the frost on the heat exchanger and the temperature distribution of the heat exchanger and obtain the multi-point temperature determination information of the heat exchanger and the flow determination information of the heat exchanger, how to control the frost elimination and the temperature distribution abnormality alarm and control the triggering of the heat exchanger temperature adjustment signal and the heat exchanger flow signal, how to eliminate the frost on the heat exchanger and coordinate the anti-freezing of the low-temperature heat pump system to adjust the energy utilization rate, etc., which have yet to be solved; therefore, it is necessary to propose an intelligent perception and adjustment method and system for anti-freezing control of low-temperature heat pumps to at least partially solve the problems existing in the prior art. Summary of the Invention

[0003] A series of simplified concepts are introduced in the summary of the invention, which will be further explained in detail in the specific implementation method. The summary of the invention does not mean to attempt to limit the key features and necessary technical features of the technical solution for protection, nor does it mean to attempt to determine the scope of protection of the technical solution for protection.

[0004] To at least partially solve the above problems, the present invention provides a low-temperature heat pump antifreeze control intelligent sensing and adjustment system, comprising:

[0005] The monitoring and acquisition information recognition module collects infrared images of the heat exchanger fins and performs image recognition to obtain frost identification information and infrared temperature distribution of the fins; it also monitors and collects the multi-point temperature and flow rate of the heat exchanger working fluid in the heat pump;

[0006] Frost temperature and flow analysis and judgment module: analyzes and determines the frost identification information of the heat exchanger and the infrared temperature distribution of the heat exchanger, obtains the heat exchanger frost elimination start judgment information and the heat exchanger temperature distribution abnormality judgment information; analyzes and determines the multi-point temperature and heat exchanger flow of the heat exchanger, obtains the multi-point temperature judgment information and heat exchanger flow judgment information of the heat exchanger;

[0007] The information perception system control module identifies and determines information, intelligently perceives abnormalities in the low-temperature heat pump system, controls the triggering of frost elimination start signals, controls the triggering of temperature distribution abnormality alarms, controls the triggering of heat exchange medium temperature control signals and heat exchange medium flow control signals;

[0008] The frost elimination and antifreeze coordination module controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger plates according to the frost elimination start signal; according to the control triggering temperature distribution abnormal alarm, combined with the heat exchange working fluid temperature control signal and the heat exchange working fluid flow control signal, it performs antifreeze coordination for the low-temperature heat pump system and adjusts the energy utilization rate.

[0009] Preferably, the monitoring and collection information identification module includes:

[0010] The frost image perception and recognition submodule uses an infrared camera to collect infrared images of the heat exchanger fins of the heat exchanger; through image recognition of the infrared images of the heat exchanger fins, it obtains frost identification information and infrared temperature distribution of the heat exchanger fins;

[0011] The multi-point temperature monitoring and acquisition submodule sets a heat exchange medium multi-point temperature acquisition unit to collect and obtain the multi-point temperature of the heat exchange medium;

[0012] The heat exchange medium flow monitoring and collection submodule is equipped with a flow monitor on the heat exchange medium flow pipeline to monitor and collect the heat exchange medium flow of the heat pump.

[0013] Preferably, the frost temperature flow rate analysis and determination module includes:

[0014] The frost temperature analysis and judgment submodule analyzes the frost identification information and the infrared temperature distribution of the heat exchanger to determine whether the heat exchanger frost needs to be removed or whether the heat exchanger temperature distribution is abnormal. It also obtains the heat exchanger frost removal start determination information and the heat exchanger temperature distribution abnormality determination information.

[0015] The heat exchange working medium temperature analysis and determination submodule analyzes the temperature of the heat exchange working medium at multiple points, determines whether the temperature of the heat exchange working medium at multiple points is within the set normal temperature range, and obtains the determination information of the temperature of the heat exchange working medium at multiple points;

[0016] The heat exchange working fluid flow analysis and determination submodule analyzes the heat exchange working fluid flow information of the heat pump, determines whether the heat exchange working fluid flow of the heat pump meets the set heat exchange working fluid flow, and obtains the heat exchange working fluid flow determination information.

[0017] Preferably, the information perception system control module includes:

[0018] The frost elimination trigger control submodule controls the triggering of the frost elimination start signal and the triggering of the temperature distribution abnormality alarm according to the heat exchanger frost elimination start judgment information and the heat exchanger temperature distribution abnormality judgment information;

[0019] The heat exchange medium temperature control submodule triggers the heat exchange medium temperature control signal based on the multi-point temperature determination information of the heat exchange medium;

[0020] The heat exchange working medium flow control submodule triggers the heat exchange working medium flow control signal according to the heat exchange working medium flow determination information.

[0021] Preferably, the frost elimination and antifreeze matching module includes:

[0022] The heat exchange frost hot air elimination submodule controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger fins according to the frost elimination start signal;

[0023] The compressor electric heating and insulation submodule controls the compressor electric heating and insulation layer to keep the compressor warm and anti-freeze according to the temperature control signal of the heat exchange medium;

[0024] The antifreeze control energy efficiency adjustment submodule triggers an abnormal temperature distribution alarm based on the control, and combines the heat exchange medium temperature control signal and the heat exchange medium flow control signal to coordinate the compressor, expansion valve, antifreeze water pump and heat exchanger to optimize energy efficiency and adjust energy utilization.

[0025] The present invention provides an intelligent sensing and adjustment method for antifreeze control of a low-temperature heat pump, comprising:

[0026] S100, by collecting infrared images of the heat exchanger fins and performing image recognition, obtain frost identification information and infrared temperature distribution of the heat exchanger fins; monitor and collect the temperature and flow rate of the heat exchange medium at multiple points in the heat pump;

[0027] S200: Analyze and determine the identification information of frost on the heat exchanger and the infrared temperature distribution of the heat exchanger, and obtain the determination information of starting to eliminate frost on the heat exchanger and the determination information of abnormal temperature distribution of the heat exchanger; analyze and determine the temperature and flow rate of the heat exchanger at multiple points, and obtain the determination information of the temperature and flow rate of the heat exchanger at multiple points;

[0028] S300: Identify and determine information to intelligently sense abnormalities in the low-temperature heat pump system, control the triggering of a frost elimination start signal, control the triggering of a temperature distribution abnormality alarm, control the triggering of a heat exchange medium temperature control signal, and control the triggering of a heat exchange medium flow control signal;

[0029] S400, according to the frost elimination start signal, controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger plate; according to the control triggering temperature distribution abnormal alarm, combined with the heat exchange working fluid temperature control signal and the heat exchange working fluid flow control signal, performs anti-freeze coordination for the low-temperature heat pump system and adjusts the energy utilization rate.

[0030] Preferably, S100 includes:

[0031] S101, collecting an infrared image of a heat exchanger fin of a heat exchanger using an infrared camera; obtaining frost identification information and infrared temperature distribution of the heat exchanger fin by image recognition of the infrared image of the heat exchanger fin;

[0032] S102, setting a heat exchange medium multi-point temperature collection unit to collect and obtain the heat exchange medium multi-point temperature;

[0033] S103, a flow monitor is installed on the heat exchange medium flow pipeline to monitor and collect the heat exchange medium flow of the heat pump.

[0034] Preferably, S200 includes:

[0035] S201, analyzing the heat exchanger frost identification information and the heat exchanger infrared temperature distribution to determine whether heat exchanger frost removal is required or whether the heat exchanger temperature distribution is abnormal, and obtaining heat exchanger frost removal start determination information and heat exchanger temperature distribution abnormality determination information;

[0036] S202, analyzing the temperature of the heat exchange medium at multiple points, determining whether the temperature of the heat exchange medium at multiple points is within a set normal temperature range, and obtaining determination information of the temperature of the heat exchange medium at multiple points;

[0037] S203, analyzing the heat exchange working medium flow information of the heat pump, determining whether the heat exchange working medium flow of the heat pump meets the set heat exchange working medium flow, and obtaining heat exchange working medium flow determination information.

[0038] Preferably, S300 includes:

[0039] S301, based on the heat exchanger fin defrost removal start determination information and the heat exchanger fin temperature distribution abnormality determination information, controlling the triggering of a defrost removal start signal and controlling the triggering of a temperature distribution abnormality alarm;

[0040] S302, triggering a heat exchange medium temperature control signal based on the multi-point temperature determination information of the heat exchange medium;

[0041] S303: triggering a heat exchange medium flow control signal according to the heat exchange medium flow determination information.

[0042] Preferably, S400 includes:

[0043] S401, according to the frost removal start signal, controlling the heat exchange frost hot air blower to remove frost from the heat exchanger fins;

[0044] S402, controlling the electric heating insulation layer of the compressor to keep the compressor warm and prevent freezing according to the heat exchange medium temperature control signal;

[0045] S403, based on the abnormal temperature distribution alarm triggered by the control, combined with the heat exchange working medium temperature control signal and the heat exchange working medium flow control signal, the compressor, expansion valve, antifreeze water pump and heat exchanger cooperate with each other to optimize energy efficiency and adjust energy utilization rate.

[0046] Compared with the prior art, the present invention has at least the following beneficial effects:

[0047] The present invention discloses an intelligent sensing and regulating system and method for controlling antifreeze of a low-temperature heat pump. The system adopts a monitoring and collecting information recognition module, which acquires frost recognition information of the heat exchanger and infrared temperature distribution of the heat exchanger by acquiring infrared images of the heat exchanger plates of the heat exchanger and performing image recognition; monitors and acquires multi-point temperatures and heat exchanger flow rates of the heat exchanger; a frost temperature and flow analysis and judgment module analyzes and judges frost recognition information of the heat exchanger plates and infrared temperature distribution of the heat exchanger plates, acquires frost elimination start-up judgment information of the heat exchanger plates and heat exchanger temperature distribution abnormality judgment information; analyzes and judges multi-point temperatures and heat exchanger flow rates of the heat exchanger plates, acquires multi-point temperature judgment information of the heat exchanger plates and heat exchanger flow judgment information of the heat exchanger plates; an information sensing system control module identifies and judges information abnormalities of the low-temperature heat pump system, controls the triggering of frost elimination start-up signals and controls the triggering of temperature distribution abnormality alarms, controls the triggering of heat exchanger temperature adjustment control signals and heat exchanger flow control signals; frost elimination and antifreeze The frost coordination module controls the heat exchanger defrost hot air blower to eliminate frost on the heat exchanger according to the frost elimination start signal; according to the control triggering temperature distribution abnormal alarm, combined with the heat exchange working fluid temperature control signal and the heat exchange working fluid flow control signal, it performs anti-freeze coordination of the low-temperature heat pump system and adjusts the energy utilization rate; it can solve the ultra-low temperature operation anti-freeze control problem of the low-temperature heat pump system, improve the ultra-low temperature environment adaptability of the low-temperature heat pump, and the various parts of the low-temperature heat pump system cooperate to improve the energy utilization efficiency; it can monitor the frost on the heat exchanger and the heat exchanger temperature, the heat exchange working fluid temperature and the heat exchange working fluid flow; it can determine the frost on the heat exchanger and the heat exchanger temperature distribution and obtain the heat exchanger multi-point temperature determination information and the heat exchange working fluid flow determination information; it can control the frost elimination and temperature distribution abnormal alarm and control the triggering of the heat exchange working fluid temperature control signal and the heat exchange working fluid flow signal; it can perform frost elimination on the heat exchanger and the anti-freeze coordination adjustment of the low-temperature heat pump system, and significantly improve the energy utilization rate.

[0048] The present invention describes a low-temperature heat pump antifreeze control intelligent sensing adjustment system and method. Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technical personnel in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0050] Figure 1 This is a diagram of an embodiment of the low-temperature heat pump antifreeze control intelligent sensing and adjustment system described in the present invention.

[0051] Figure 2 This is another embodiment diagram of the low-temperature heat pump antifreeze control intelligent sensing and adjustment system described in the present invention.

[0052] Figure 3 This is a diagram of an embodiment of the intelligent sensing and adjustment method for antifreeze control of a low-temperature heat pump described in the present invention. DETAILED DESCRIPTION

[0053] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description. Figure 1-Figure 3 As shown, the present invention provides a low-temperature heat pump antifreeze control intelligent sensing and regulation system, comprising:

[0054] Monitoring and acquisition information identification module 1, by collecting infrared images of the heat exchanger fins and performing image recognition, obtains frost identification information and infrared temperature distribution of the heat exchanger fins; monitors and collects the multi-point temperature and flow rate of the heat exchange working fluid of the heat pump;

[0055] Frost temperature and flow rate analysis and determination module 2 analyzes and determines the frost identification information of the heat exchanger and the infrared temperature distribution of the heat exchanger, obtains the heat exchanger frost elimination start determination information and the heat exchanger temperature distribution abnormality determination information; analyzes and determines the multi-point temperature and heat exchanger flow of the heat exchanger, obtains the multi-point temperature determination information and heat exchanger flow determination information of the heat exchanger;

[0056] Information perception system control module 3, which identifies and determines information, intelligently perceives abnormalities in the low-temperature heat pump system, controls the triggering of frost elimination start signals, controls the triggering of temperature distribution abnormality alarms, controls the triggering of heat exchange medium temperature control signals and heat exchange medium flow control signals;

[0057] The frost elimination and antifreeze coordination module 4 controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger plate according to the frost elimination start signal; according to the control trigger temperature distribution abnormal alarm, combined with the heat exchange working medium temperature control signal and the heat exchange working medium flow control signal, it performs antifreeze coordination for the low-temperature heat pump system and adjusts the energy utilization rate.

[0058] The principle and effect of the above technical solution are as follows: the present invention provides an intelligent sensing and regulating system for antifreeze control of a low-temperature heat pump, comprising: a monitoring and acquisition information recognition module, which acquires frost recognition information of the heat exchanger and infrared temperature distribution of the heat exchanger by acquiring infrared images of the heat exchanger and performing image recognition; monitors and acquires multi-point temperatures and heat exchanger flow rates of the heat pump heat exchanger; a frost temperature and flow analysis and judgment module, which analyzes and determines frost recognition information of the heat exchanger and infrared temperature distribution of the heat exchanger, acquires frost elimination start-up judgment information of the heat exchanger and heat exchanger temperature distribution abnormality judgment information; analyzes and determines multi-point temperatures and heat exchanger flow rates of the heat exchanger, acquires multi-point temperature judgment information of the heat exchanger and heat exchanger flow judgment information; an information sensing system control module, which identifies and determines information and intelligently senses abnormalities of the low-temperature heat pump system, controls the triggering of frost elimination start-up signals and controls the triggering of temperature distribution abnormality alarms, controls the triggering of heat exchanger temperature adjustment control signals and heat exchanger flow control signals No.; frost elimination and antifreeze coordination module, according to the frost elimination start signal, controls the heat exchanger defrost hot air blower to eliminate frost on the heat exchanger; according to the control trigger temperature distribution abnormal alarm, combined with the heat exchange working fluid temperature control signal and the heat exchange working fluid flow control signal, the low-temperature heat pump system antifreeze coordination is carried out to adjust the energy utilization rate; it can solve the ultra-low temperature operation antifreeze control problem of the low-temperature heat pump system, improve the ultra-low temperature environment adaptability of the low-temperature heat pump, and the various parts of the low-temperature heat pump system cooperate to improve the energy utilization efficiency; it can monitor the frost on the heat exchanger and the heat exchanger temperature, the heat exchange working fluid temperature and the heat exchange working fluid flow; it can determine the frost on the heat exchanger and the heat exchanger temperature distribution and obtain the heat exchange working fluid multi-point temperature determination information and the heat exchange working fluid flow determination information; it can control the frost elimination and temperature distribution abnormal alarm and control the triggering of the heat exchange working fluid temperature control signal and the heat exchange working fluid flow signal; it can perform heat exchanger frost elimination and low-temperature heat pump system antifreeze coordination adjustment to significantly improve the energy utilization rate;

[0059] The technical solution of the present invention can comprehensively monitor parameters such as the frost condition of the heat exchanger plate, the temperature and flow rate of the heat exchange medium, rather than just local parameters, so that it can more accurately reflect the operating status of the equipment and provide a more accurate basis for subsequent control; intelligent control: this technical solution can not only be adjusted according to the current parameters, but also perform more complex control based on historical data and future predictions, so that the operation of the equipment can be more stable and the performance can be more optimized; comprehensive adjustment: this technical solution can not only perform single anti-frost and anti-freeze measures, but also perform comprehensive adjustment, so that the performance of the equipment can be more effectively improved, and the energy utilization rate can also be improved; improve energy utilization: this technical solution can effectively prevent the performance degradation of the equipment due to frost by monitoring and controlling the frost on the heat exchanger plate, thereby improving the operating efficiency of the equipment and further improving the energy utilization rate.

[0060] In one embodiment, the monitoring and collection information identification module includes:

[0061] The frost image perception and recognition submodule uses an infrared camera to collect infrared images of the heat exchanger fins of the heat exchanger; through image recognition of the infrared images of the heat exchanger fins, it obtains frost identification information and infrared temperature distribution of the heat exchanger fins;

[0062] The multi-point temperature monitoring and acquisition submodule sets a heat exchange medium multi-point temperature acquisition unit to collect and obtain the multi-point temperature of the heat exchange medium;

[0063] The heat exchange medium flow monitoring and collection submodule is equipped with a flow monitor on the heat exchange medium flow pipeline to monitor and collect the heat exchange medium flow of the heat pump.

[0064] The principle and effect of the above technical solution are as follows: monitoring and acquisition information identification module, including: frost image perception and recognition submodule, which collects infrared images of the heat exchanger plates of the heat exchanger through an infrared camera; obtains frost identification information of the heat exchanger plates and infrared temperature distribution of the heat exchanger plates through image recognition of the infrared images of the heat exchanger plates of the heat exchanger; multi-point temperature monitoring and acquisition submodule, which sets a multi-point temperature acquisition unit for the heat exchange working fluid to collect and acquire the multi-point temperature of the heat exchange working fluid; heat exchange working fluid flow monitoring and acquisition submodule, which sets a flow monitor on the heat exchange working fluid circulation pipeline to monitor and collect the heat pump heat exchange working fluid flow; the temperature sensor model has a measurement range of -55℃ to 125℃, with an accuracy of ±0.5℃; the flow sensor has a measurement range of 0L / min to 100L / min, with an accuracy of ±1% FS; the camera adopts a combination of infrared camera and visible light camera; during the operation of the equipment, the temperature sensor and flow sensor realize the real-time temperature and flow of the heat exchange working fluid.

[0065] In one embodiment, the frost temperature flow rate analysis and determination module includes:

[0066] The frost temperature analysis and judgment submodule analyzes the frost identification information and the infrared temperature distribution of the heat exchanger to determine whether the heat exchanger frost needs to be removed or whether the heat exchanger temperature distribution is abnormal. It also obtains the heat exchanger frost removal start determination information and the heat exchanger temperature distribution abnormality determination information.

[0067] The heat exchange working medium temperature analysis and determination submodule analyzes the temperature of the heat exchange working medium at multiple points, determines whether the temperature of the heat exchange working medium at multiple points is within the set normal temperature range, and obtains the determination information of the temperature of the heat exchange working medium at multiple points;

[0068] The heat exchange working fluid flow analysis and determination submodule analyzes the heat exchange working fluid flow information of the heat pump, determines whether the heat exchange working fluid flow of the heat pump meets the set heat exchange working fluid flow, and obtains the heat exchange working fluid flow determination information.

[0069] The principle and effect of the above technical solution are as follows: the frost temperature flow analysis and judgment module includes: a frost temperature analysis and judgment submodule, which analyzes the frost identification information of the heat exchanger and the infrared temperature distribution of the heat exchanger, determines whether it is necessary to remove frost from the heat exchanger or whether the temperature distribution of the heat exchanger is abnormal, and obtains the heat exchanger frost removal start judgment information and the heat exchanger temperature distribution abnormality judgment information; a heat exchange working fluid temperature analysis and judgment submodule, which analyzes the multi-point temperature of the heat exchange working fluid, determines whether the multi-point temperature of the heat exchange working fluid is within the set normal temperature range, and obtains the heat exchange working fluid multi-point temperature judgment information; a heat exchange working fluid flow analysis and judgment submodule, which analyzes the heat pump heat exchange working fluid flow information, determines whether the heat pump heat exchange working fluid flow meets the set heat exchange working fluid flow, and obtains the heat exchange working fluid flow judgment information; analyzes the frost identification information of the heat exchanger and the infrared temperature distribution of the heat exchanger, determines whether it is necessary to remove frost from the heat exchanger or the heat exchanger temperature distribution abnormality alarm, and obtains the heat exchanger frost removal judgment information and the heat exchanger temperature distribution abnormality alarm information, including: setting the heat exchanger Starting conditions for removing frost from heat exchanger plates; starting conditions for removing frost from heat exchanger plates include: the frost area of the heat exchanger plates is greater than one-fifth of the total area of the heat exchanger plates, or the frost thickness of the heat exchanger plates exceeds one-fifth of the interval between heat exchanger plates, or the frost area is not greater than one-fifth of the total area of the heat exchanger plates or the frost thickness of the heat exchanger plates does not exceed one-fifth of the interval between heat exchanger plates, but the frost accumulation rate exceeds the preset maximum frost accumulation rate; when the starting conditions for removing frost from heat exchanger plates are met, it is determined that the frost removal of heat exchanger plates is required, and the judgment information of removing frost from heat exchanger plates is obtained; setting the starting conditions for the abnormal temperature distribution alarm of heat exchanger plates; starting conditions for the abnormal temperature distribution alarm of heat exchanger plates include: the temperature distribution difference of heat exchanger plates is greater than the set temperature distribution difference range or the temperature of heat exchanger plates exceeds the normal working temperature range of heat exchanger plates; when the starting conditions for the abnormal temperature distribution alarm of heat exchanger plates appear, it is determined that the abnormal temperature distribution alarm of heat exchanger plates is required, and the judgment information of the abnormal temperature distribution alarm of heat exchanger plates is obtained; the analysis and judgment methods include: threshold analysis judgment method, statistical analysis judgment method or machine learning analysis judgment method.

[0070] In one embodiment, the information perception system control module includes:

[0071] The frost elimination trigger control submodule controls the triggering of the frost elimination start signal and the triggering of the temperature distribution abnormality alarm according to the heat exchanger frost elimination start judgment information and the heat exchanger temperature distribution abnormality judgment information;

[0072] The heat exchange medium temperature control submodule triggers the heat exchange medium temperature control signal based on the multi-point temperature determination information of the heat exchange medium;

[0073] The heat exchange working medium flow control submodule triggers the heat exchange working medium flow control signal according to the heat exchange working medium flow determination information.

[0074] The principles and effects of the above technical solution are as follows: the information perception system control module includes: a frost elimination trigger control submodule, which controls the triggering of the frost elimination start signal and the triggering of the temperature distribution abnormality alarm according to the heat exchanger frost elimination start judgment information and the heat exchanger temperature distribution abnormality judgment information; a heat exchange working fluid temperature adjustment control submodule, which triggers the heat exchange working fluid temperature adjustment control signal according to the heat exchange working fluid multi-point temperature judgment information; a heat exchange working fluid flow control submodule, which triggers the heat exchange working fluid flow control signal according to the heat exchange working fluid flow judgment information; if there is frost on the heat exchanger, the system automatically starts the defrost program in parallel; if the heat exchanger temperature is unevenly distributed, the system displays the temperature distribution difference information; the system displays the heat exchange working fluid temperature or the heat exchange working fluid flow.

[0075] In one embodiment, the frost elimination and antifreeze coordination module includes:

[0076] The heat exchange frost hot air elimination submodule controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger fins according to the frost elimination start signal;

[0077] The compressor electric heating and insulation submodule controls the compressor electric heating and insulation layer to keep the compressor warm and anti-freeze according to the temperature control signal of the heat exchange medium;

[0078] The antifreeze control energy efficiency adjustment submodule triggers an abnormal temperature distribution alarm based on the control, and combines the heat exchange medium temperature control signal and the heat exchange medium flow control signal to coordinate the compressor, expansion valve, antifreeze water pump and heat exchanger to optimize energy efficiency and adjust energy utilization.

[0079] The principle and effect of the above technical solution are as follows: frost elimination and antifreeze coordination module, including: heat exchange frost hot air elimination submodule, which controls the heat exchange frost hot air blower to eliminate frost on the heat exchange plate according to the frost elimination start signal; compressor electric heating insulation submodule, which controls the compressor electric heating insulation layer to insulate and antifreeze the compressor according to the heat exchange working medium temperature control signal; antifreeze control energy efficiency adjustment submodule, which triggers the abnormal temperature distribution alarm according to the control, combines the heat exchange working medium temperature control signal and the heat exchange working medium flow control signal, and coordinates the compressor, expansion valve, antifreeze water pump and heat exchanger to optimize energy efficiency and adjust energy utilization rate; coordinates the compressor, expansion valve, antifreeze water pump and heat exchanger to optimize energy efficiency and adjust energy utilization rate. The utilization rate includes: according to the control triggering temperature distribution abnormal alarm, combined with the heat exchange working medium temperature control signal and the heat exchange working medium flow control signal, the compressor operating power is intelligently controlled, and the heat exchange working medium temperature is adjusted to reach the set normal temperature range; and the antifreeze water pump start and stop and operating power are controlled, and the expansion valve flow is adjusted to control the heat exchange working medium flow so that the temperature distribution difference of the heat exchange plate meets the set temperature distribution difference range; through intelligent perception of the antifreeze status, the compressor, expansion valve, antifreeze water pump and heat exchanger of the low-temperature heat pump system are controlled to coordinate with each other in the antifreeze coordination. During the frost elimination process, the compressor power consumption is coordinated with the antifreeze water pump start and stop and operating power to achieve frost elimination and reduce the total energy consumption to optimize energy efficiency, and coordinate with the optimized energy efficiency to adjust the energy utilization rate.

[0080] The present invention provides an intelligent sensing and adjustment method for antifreeze control of a low-temperature heat pump, comprising:

[0081] S100, by collecting infrared images of the heat exchanger fins and performing image recognition, obtain frost identification information and infrared temperature distribution of the heat exchanger fins; monitor and collect the temperature and flow rate of the heat exchange medium at multiple points in the heat pump;

[0082] S200: Analyze and determine the identification information of frost on the heat exchanger and the infrared temperature distribution of the heat exchanger, and obtain the determination information of starting to eliminate frost on the heat exchanger and the determination information of abnormal temperature distribution of the heat exchanger; analyze and determine the temperature and flow rate of the heat exchanger at multiple points, and obtain the determination information of the temperature and flow rate of the heat exchanger at multiple points;

[0083] S300: Identify and determine information to intelligently sense abnormalities in the low-temperature heat pump system, control the triggering of a frost elimination start signal, control the triggering of a temperature distribution abnormality alarm, control the triggering of a heat exchange medium temperature control signal, and control the triggering of a heat exchange medium flow control signal;

[0084] S400, according to the frost elimination start signal, controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger plate; according to the control triggering temperature distribution abnormal alarm, combined with the heat exchange working fluid temperature control signal and the heat exchange working fluid flow control signal, performs anti-freeze coordination for the low-temperature heat pump system and adjusts the energy utilization rate.

[0085] The principle and effect of the above technical solution are as follows: The present invention provides an intelligent perception and adjustment method for antifreeze control of a low-temperature heat pump, comprising: acquiring frost identification information of the heat exchanger and infrared temperature distribution of the heat exchanger by collecting infrared images of the heat exchanger and performing image recognition; monitoring and acquiring multi-point temperatures and heat exchanger flow rates of the heat pump heat exchanger; analyzing and determining frost identification information of the heat exchanger and infrared temperature distribution of the heat exchanger, acquiring frost elimination start-up determination information of the heat exchanger and heat exchanger temperature distribution abnormality determination information; analyzing and determining multi-point temperatures and heat exchanger flow rates of the heat exchanger, acquiring multi-point temperature determination information of the heat exchanger and heat exchanger flow determination information of the heat exchanger; identifying and determining information on abnormalities of the low-temperature heat pump system, controlling the triggering of the frost elimination start-up signal and controlling the triggering of the temperature distribution abnormality alarm, controlling the triggering of the heat exchanger temperature adjustment control signal and the heat exchanger flow control signal; according to the frost elimination start-up signal , control the heat exchanger defrosting hot air blower to eliminate frost on the heat exchanger; according to the control triggering temperature distribution abnormal alarm, combined with the heat exchange working fluid temperature control signal and the heat exchange working fluid flow control signal, the low-temperature heat pump system is anti-freeze coordinated to adjust the energy utilization rate; it can solve the ultra-low temperature operation anti-freeze control problem of the low-temperature heat pump system, improve the ultra-low temperature environment adaptability of the low-temperature heat pump, and the various parts of the low-temperature heat pump system cooperate to improve the energy utilization efficiency; it can monitor the frost on the heat exchanger and the heat exchanger temperature, the heat exchange working fluid temperature and the heat exchange working fluid flow; it can determine the frost on the heat exchanger and the heat exchanger temperature distribution and obtain the heat exchange working fluid multi-point temperature determination information and heat exchange working fluid flow determination information; it can control the frost elimination and temperature distribution abnormal alarm and control the triggering of the heat exchange working fluid temperature control signal and the heat exchange working fluid flow signal; it can eliminate frost on the heat exchanger and coordinate the anti-freeze of the low-temperature heat pump system to significantly improve the energy utilization rate;

[0086] The technical solution of the present invention can comprehensively monitor parameters such as the frost condition of the heat exchanger plate, the temperature and flow rate of the heat exchange medium, rather than just local parameters, so that it can more accurately reflect the operating status of the equipment and provide a more accurate basis for subsequent control; intelligent control: this technical solution can not only be adjusted according to the current parameters, but also perform more complex control based on historical data and future predictions, so that the operation of the equipment can be more stable and the performance can be more optimized; comprehensive adjustment: this technical solution can not only perform single anti-frost and anti-freeze measures, but also perform comprehensive adjustment, so that the performance of the equipment can be more effectively improved, and the energy utilization rate can also be improved; improve energy utilization: this technical solution can effectively prevent the performance degradation of the equipment due to frost by monitoring and controlling the frost on the heat exchanger plate, thereby improving the operating efficiency of the equipment and further improving the energy utilization rate.

[0087] In one embodiment, S100 includes:

[0088] S101, collecting an infrared image of a heat exchanger fin of a heat exchanger using an infrared camera; obtaining frost identification information and infrared temperature distribution of the heat exchanger fin by image recognition of the infrared image of the heat exchanger fin;

[0089] S102, setting a heat exchange medium multi-point temperature collection unit to collect and obtain the heat exchange medium multi-point temperature;

[0090] S103, a flow monitor is installed on the heat exchange medium flow pipeline to monitor and collect the heat exchange medium flow of the heat pump.

[0091] The principle and effect of the above technical solution are as follows: the infrared image of the heat exchanger plate of the heat exchanger is collected by an infrared camera; the infrared image of the heat exchanger plate of the heat exchanger is recognized by image recognition to obtain the frost identification information of the heat exchanger plate and the infrared temperature distribution of the heat exchanger plate; a multi-point temperature acquisition unit for the heat exchange working fluid is set to collect and obtain the multi-point temperature of the heat exchange working fluid; a flow monitor is set on the heat exchange working fluid circulation pipeline to monitor and collect the flow of the heat pump heat exchange working fluid; the temperature sensor model has a measurement range of -55℃ to 125℃, with an accuracy of ±0.5℃; the flow sensor has a measurement range of 0L / min to 100L / min, with an accuracy of ±1% FS; the camera adopts a combination of infrared camera and visible light camera; during the operation of the equipment, the temperature sensor and flow sensor record the temperature and flow of the heat exchange working fluid in real time.

[0092] In one embodiment, S200 includes:

[0093] S201, analyzing the heat exchanger frost identification information and the heat exchanger infrared temperature distribution to determine whether heat exchanger frost removal is required or whether the heat exchanger temperature distribution is abnormal, and obtaining heat exchanger frost removal start determination information and heat exchanger temperature distribution abnormality determination information;

[0094] S202, analyzing the temperature of the heat exchange medium at multiple points, determining whether the temperature of the heat exchange medium at multiple points is within a set normal temperature range, and obtaining determination information of the temperature of the heat exchange medium at multiple points;

[0095] S203, analyzing the heat exchange working medium flow information of the heat pump, determining whether the heat exchange working medium flow of the heat pump meets the set heat exchange working medium flow, and obtaining heat exchange working medium flow determination information.

[0096] The principle and effect of the above technical solution are as follows: analyzing the frost identification information of the heat exchanger and the infrared temperature distribution of the heat exchanger, determining whether it is necessary to remove frost from the heat exchanger or whether the temperature distribution of the heat exchanger is abnormal, and obtaining the heat exchanger frost removal start judgment information and the heat exchanger temperature distribution abnormality judgment information; analyzing the multi-point temperature of the heat exchange working fluid, determining whether the multi-point temperature of the heat exchange working fluid is within the set normal temperature range, and obtaining the heat exchange working fluid multi-point temperature judgment information; analyzing the heat exchange working fluid flow information of the heat pump, determining whether the heat exchange working fluid flow of the heat pump meets the set heat exchange working fluid flow, and obtaining the heat exchange working fluid flow judgment information; analyzing the frost identification information of the heat exchanger and the infrared temperature distribution of the heat exchanger, determining whether it is necessary to remove frost from the heat exchanger or to issue an abnormal heat exchanger temperature distribution warning, and obtaining the heat exchanger frost removal judgment information and the heat exchanger temperature distribution abnormality warning information, including: setting the heat exchanger frost removal start condition; the heat exchanger frost removal start condition includes: heat exchanger frost The frost area is larger than one-fifth of the total area of the heat exchanger, or the frost thickness of the heat exchanger exceeds one-fifth of the heat exchanger interval, or the frost area is not larger than one-fifth of the total area of the heat exchanger or the frost thickness of the heat exchanger does not exceed one-fifth of the heat exchanger interval, but the frost accumulation rate exceeds the preset maximum frost accumulation rate; when the heat exchanger frost elimination starting conditions are reached, it is determined that the heat exchanger frost elimination needs to be performed, and the heat exchanger frost elimination judgment information is obtained; the heat exchanger temperature distribution abnormality alarm starting conditions are set; the heat exchanger temperature distribution abnormality alarm starting conditions include: the heat exchanger temperature distribution difference is greater than the set temperature distribution difference range or the heat exchanger temperature exceeds the normal working temperature range of the heat exchanger; when the heat exchanger temperature distribution abnormality alarm starting conditions appear, it is determined that the heat exchanger temperature distribution abnormality alarm needs to be performed, and the heat exchanger temperature distribution abnormality alarm judgment information is obtained; the analysis and judgment methods include: threshold analysis judgment method, statistical analysis judgment method or machine learning analysis judgment method.

[0097] In one embodiment, S300 includes:

[0098] S301, based on the heat exchanger fin defrost removal start determination information and the heat exchanger fin temperature distribution abnormality determination information, controlling the triggering of a defrost removal start signal and controlling the triggering of a temperature distribution abnormality alarm;

[0099] S302, triggering a heat exchange medium temperature control signal based on the multi-point temperature determination information of the heat exchange medium;

[0100] S303: triggering a heat exchange medium flow control signal according to the heat exchange medium flow determination information.

[0101] The principle and effect of the above technical solution are: according to the heat exchanger frost elimination start judgment information and the heat exchanger temperature distribution abnormality judgment information, the frost elimination start signal is controlled to be triggered, and the temperature distribution abnormality alarm is controlled to be triggered; according to the multi-point temperature judgment information of the heat exchange working fluid, the heat exchange working fluid temperature adjustment control signal is triggered; according to the heat exchange working fluid flow judgment information, the heat exchange working fluid flow control signal is triggered; if there is frost on the heat exchanger, the system automatically starts the defrost program in parallel; if the temperature distribution of the heat exchanger is uneven, the system displays the temperature distribution difference information; the system displays the heat exchange working fluid temperature or the heat exchange working fluid flow.

[0102] In one embodiment, S400 includes:

[0103] S401, according to the frost removal start signal, controlling the heat exchange frost hot air blower to remove frost from the heat exchanger fins;

[0104] S402, controlling the electric heating insulation layer of the compressor to keep the compressor warm and prevent freezing according to the heat exchange medium temperature control signal;

[0105] S403, based on the abnormal temperature distribution alarm triggered by the control, combined with the heat exchange working medium temperature control signal and the heat exchange working medium flow control signal, the compressor, expansion valve, antifreeze water pump and heat exchanger cooperate with each other to optimize energy efficiency and adjust energy utilization rate.

[0106] The principle and effect of the above technical solution are as follows: according to the frost elimination start signal, the heat exchange frost hot air blower is controlled to eliminate frost on the heat exchange plate; according to the heat exchange medium temperature control signal, the compressor electric heating insulation layer is controlled to insulate the compressor for antifreeze; according to the control trigger temperature distribution abnormal alarm, combined with the heat exchange medium temperature control signal and the heat exchange medium flow control signal, the compressor, expansion valve, antifreeze water pump and heat exchanger are coordinated with each other to optimize energy efficiency and adjust energy utilization rate; the compressor, expansion valve, antifreeze water pump and heat exchanger are coordinated with each other to optimize energy efficiency and adjust energy utilization rate, including: according to the control trigger temperature distribution abnormal alarm, combined with the heat exchange medium temperature control signal and the heat exchange medium flow control signal, The hot working medium temperature control signal and the heat exchange working medium flow control signal intelligently control the operating power of the compressor and adjust the temperature of the heat exchange working medium to within the set normal temperature range; and control the start and stop and operating power of the antifreeze water pump, cooperate with the adjustment of the expansion valve flow, and control the heat exchange working medium flow, so that the temperature distribution difference of the heat exchanger meets the set temperature distribution difference range; through intelligent perception of the antifreeze status, control the antifreeze coordination of the compressor, expansion valve, antifreeze water pump and heat exchanger of the low-temperature heat pump system. During the frost elimination process, the compressor power consumption is coordinated with the start and stop and operating power of the antifreeze water pump to achieve frost elimination and reduce the total energy consumption to optimize energy efficiency, and coordinate with the optimized energy efficiency to adjust the energy utilization rate.

[0107] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A low-temperature heat pump antifreeze control intelligent sensing and adjustment system, characterized in that: include: The monitoring and acquisition information recognition module collects infrared images of the heat exchanger fins and performs image recognition to obtain frost identification information and infrared temperature distribution of the fins; it also monitors and collects the multi-point temperature and flow rate of the heat exchanger working fluid in the heat pump; Frost temperature flow analysis and judgment module, which analyzes and determines the frost identification information of the heat exchanger and the infrared temperature distribution of the heat exchanger, and obtains the heat exchanger frost elimination start judgment information and the heat exchanger temperature distribution abnormality judgment information; Analyze and determine the multi-point temperature and flow rate of the heat exchange medium, and obtain the multi-point temperature determination information and the heat exchange medium flow rate determination information of the heat exchange medium; The information perception system control module identifies and determines information, intelligently perceives abnormalities in the low-temperature heat pump system, controls the triggering of frost elimination start signals, controls the triggering of temperature distribution abnormality alarms, controls the triggering of heat exchange medium temperature control signals and heat exchange medium flow control signals; The frost removal and antifreeze coordination module controls the heat exchanger frost hot air blower to remove frost on the heat exchanger fins according to the frost removal start signal; based on the abnormal temperature distribution alarm triggered by the control, combined with the heat exchange medium temperature control signal and the heat exchange medium flow control signal, it coordinates the low-temperature heat pump system with antifreeze and adjusts the energy utilization rate; Monitoring and collection information identification module, including: The frost image perception and recognition submodule uses an infrared camera to collect infrared images of the heat exchanger fins of the heat exchanger; through image recognition of the infrared images of the heat exchanger fins, it obtains frost identification information and infrared temperature distribution of the heat exchanger fins; The multi-point temperature monitoring and acquisition submodule sets a heat exchange medium multi-point temperature acquisition unit to collect and obtain the multi-point temperature of the heat exchange medium; The heat exchange medium flow monitoring and collection submodule is equipped with a flow monitor on the heat exchange medium flow pipeline to monitor and collect the heat exchange medium flow of the heat pump; Frost elimination and antifreeze matching module, including: The heat exchange frost hot air elimination submodule controls the heat exchange frost hot air blower to eliminate frost on the heat exchanger fins according to the frost elimination start signal; The compressor electric heating and insulation submodule controls the compressor electric heating and insulation layer to keep the compressor warm and anti-freeze according to the temperature control signal of the heat exchange medium; The antifreeze control energy efficiency adjustment submodule triggers an abnormal temperature distribution alarm based on the control, and combines the heat exchange medium temperature control signal and the heat exchange medium flow control signal to coordinate the compressor, expansion valve, antifreeze water pump and heat exchanger to optimize energy efficiency and adjust energy utilization.

2. The low-temperature heat pump antifreeze control intelligent sensing and adjustment system according to claim 1 is characterized in that: Frost temperature and flow analysis and judgment module, including: The frost temperature analysis and judgment submodule analyzes the frost identification information and the infrared temperature distribution of the heat exchanger to determine whether the heat exchanger frost needs to be removed or whether the heat exchanger temperature distribution is abnormal. It also obtains the heat exchanger frost removal start determination information and the heat exchanger temperature distribution abnormality determination information. The heat exchange working medium temperature analysis and determination submodule analyzes the temperature of the heat exchange working medium at multiple points, determines whether the temperature of the heat exchange working medium at multiple points is within the set normal temperature range, and obtains the determination information of the temperature of the heat exchange working medium at multiple points; The heat exchange working fluid flow analysis and determination submodule analyzes the heat exchange working fluid flow information of the heat pump, determines whether the heat exchange working fluid flow of the heat pump meets the set heat exchange working fluid flow, and obtains the heat exchange working fluid flow determination information.

3. The low-temperature heat pump antifreeze control intelligent sensing and adjustment system according to claim 1, characterized in that: Information perception system control module, including: The frost elimination trigger control submodule controls the triggering of the frost elimination start signal and the triggering of the temperature distribution abnormality alarm according to the heat exchanger frost elimination start judgment information and the heat exchanger temperature distribution abnormality judgment information; The heat exchange medium temperature control submodule triggers the heat exchange medium temperature control signal based on the multi-point temperature determination information of the heat exchange medium; The heat exchange working medium flow control submodule triggers the heat exchange working medium flow control signal according to the heat exchange working medium flow determination information.

4. A low-temperature heat pump antifreeze control intelligent sensing adjustment method, characterized in that: include: Adopting the adjustment method of the low-temperature heat pump antifreeze control intelligent sensing adjustment system; S100, by collecting infrared images of the heat exchanger fins and performing image recognition, obtain frost identification information and infrared temperature distribution of the heat exchanger fins; monitor and collect the temperature and flow rate of the heat exchange medium at multiple points in the heat pump; S200, analyzing and determining the heat exchanger fin frost identification information and the heat exchanger fin infrared temperature distribution, and obtaining the heat exchanger fin frost removal start determination information and the heat exchanger fin temperature distribution abnormality determination information; Analyze and determine the multi-point temperature and flow rate of the heat exchange medium, and obtain the multi-point temperature determination information and the heat exchange medium flow rate determination information of the heat exchange medium; S300: Identify and determine information to intelligently sense abnormalities in the low-temperature heat pump system, control the triggering of a frost elimination start signal, control the triggering of a temperature distribution abnormality alarm, control the triggering of a heat exchange medium temperature control signal, and control the triggering of a heat exchange medium flow control signal; S400, based on the frost removal start signal, controls the heat exchanger defrost hot air blower to remove frost from the heat exchanger fins; based on the control triggering of the abnormal temperature distribution alarm, combined with the heat exchange medium temperature control signal and the heat exchange medium flow control signal, performs antifreeze coordination for the low-temperature heat pump system and adjusts the energy utilization rate; S100 includes: S101, collecting an infrared image of a heat exchanger fin of a heat exchanger using an infrared camera; obtaining frost identification information and infrared temperature distribution of the heat exchanger fin by image recognition of the infrared image of the heat exchanger fin; S102, setting a heat exchange medium multi-point temperature collection unit to collect and obtain the heat exchange medium multi-point temperature; S103, installing a flow monitor on the heat exchange medium flow pipeline to monitor and collect the heat exchange medium flow of the heat pump; S400 includes: S401, according to the frost removal start signal, controlling the heat exchange frost hot air blower to remove frost from the heat exchanger fins; S402, controlling the electric heating insulation layer of the compressor to keep the compressor warm and prevent freezing according to the heat exchange medium temperature control signal; S403, based on the abnormal temperature distribution alarm triggered by the control, combined with the heat exchange working medium temperature control signal and the heat exchange working medium flow control signal, the compressor, expansion valve, antifreeze water pump and heat exchanger cooperate with each other to optimize energy efficiency and adjust energy utilization rate.

5. The low-temperature heat pump antifreeze control intelligent sensing adjustment method according to claim 4, characterized in that: S200 includes: S201, analyzing the heat exchanger frost identification information and the heat exchanger infrared temperature distribution to determine whether heat exchanger frost removal is required or whether the heat exchanger temperature distribution is abnormal, and obtaining heat exchanger frost removal start determination information and heat exchanger temperature distribution abnormality determination information; S202, analyzing the temperature of the heat exchange medium at multiple points, determining whether the temperature of the heat exchange medium at multiple points is within a set normal temperature range, and obtaining determination information of the temperature of the heat exchange medium at multiple points; S203, analyzing the heat exchange working medium flow information of the heat pump, determining whether the heat exchange working medium flow of the heat pump meets the set heat exchange working medium flow, and obtaining heat exchange working medium flow determination information.

6. The low-temperature heat pump antifreeze control intelligent sensing adjustment method according to claim 4, characterized in that: S300 includes: S301, based on the heat exchanger fin defrost removal start determination information and the heat exchanger fin temperature distribution abnormality determination information, controlling the triggering of a defrost removal start signal and controlling the triggering of a temperature distribution abnormality alarm; S302, triggering a heat exchange medium temperature control signal based on the multi-point temperature determination information of the heat exchange medium; S303: triggering a heat exchange medium flow control signal according to the heat exchange medium flow determination information.

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