28 results about "Freeze stat" patented technology

Technologies for thaw detection are described. The system includes a sensor included in a container, a sensor blocking mechanism, and a detector. The container includes a fluid. The sensor blocking mechanism prevents detection of the sensor while a portion of the fluid in the container is in a frozen state. The detector is configured to detect the sensor while the portion of the fluid in the container is in a thawed state. The thawed state deactivates the sensor blocking mechanism by activating a movement of the sensor.

The present disclosure provides a method for removing ice from a vehicle's handle assembly using a selectable control system. The method includes receiving a control mode signal that selects one of several preset modes to carry out the de-icing operation. These control modes include at least two of the following: a monitoring mode, a vehicle standby mode, and a rapid de-icing mode. In the monitoring mode, the system continuously monitors the frozen state of the handle and applies heat at a first power level based on that condition. The vehicle standby mode preheats the handle at a second power level for a predetermined time before the vehicle is expected to be used. The rapid de-icing mode activates heating at a third power level when the vehicle is already in use. By allowing the selection of different modes based on driving habits or usage scenarios, the method enables a single control system to adapt to varying user needs and conditions.

The invention provides a bulk material unfreezing method, system and device, and the method comprises the steps: obtaining real-time state information corresponding to a to-be-unfrozen bulk material if it is detected that a carrier enters an unfreezing chamber; the real-time freezing state comprises carrier information of the carrier and the real-time freezing state of the bulk material to be unfrozen; based on a preset state information-unfreezing parameter corresponding relation, unfreezing parameters corresponding to the bulk materials to be unfrozen are determined; controlling a free water generation unit to operate according to the unfreezing parameters so as to form free water on the surface of the bulk material to be unfrozen; controlling the microwave unfreezing unit to operate according to the unfreezing parameters so as to unfreeze the bulk material to be unfrozen; wherein the free water is flowable liquid water. In the mode, free water can be formed on the surface of the to-be-unfrozen bulk material, and the unfreezing efficiency of unfreezing the bulk material is improved by a method of heating the to-be-unfrozen bulk material and the free water on the surface of the to-be-unfrozen bulk material through microwaves at the same time, so that the unfreezing time of unfreezing the bulk material is shortened.

The invention belongs to the technical field of shield segment repair, and discloses a freezing repair method for a shield segment in a water-rich sand layer, which comprises the following steps of: constructing a repair well on the outer side of a damaged shield segment close to a shield tunnel; freezing holes are constructed in the repair well, then freezing pipes are connected for freezing construction, and a freezing curtain corresponding to the damaged shield segment is formed; after the frozen curtain reaches the design strength, the frozen state is kept, and frozen soil around the damaged segment is manually chiseled away; the positioned damaged shield segment is repaired, and it is determined that the repairing effect reaches the expected state; and removing the freezing pipe to release the freezing state, and then backfilling and repairing the well to the ground elevation. According to the method, under the condition that normal use of an existing tunnel is not affected, the damaged shield segment can be rapidly and effectively repaired, the construction risk of constructors is reduced, economic losses can be rapidly, safely, scientifically and reasonably reduced, a new repairing method is provided for the field of underground tunnel engineering, and the method is suitable for application and popularization.

The present invention discloses a method and device for dealing with the antifreeze problem of water meters, comprising the following steps: S1, installing a temperature sensor and a pressure sensor in the water meter respectively; S2, installing a switch pressure relief valve on the outside of the water meter; S3, accurately determining whether the water meter is in a frozen state by collecting water temperature and water pressure; S4, simultaneously setting a temperature threshold, and when the water temperature in the meter is lower than the temperature threshold, starting the timer and opening the switch pressure relief valve; S5, resetting the temperature range threshold and the pressure threshold, and when the water temperature reaches the temperature range threshold and the pressure threshold, opening the switch pressure relief valve, otherwise it does not reach the set temperature range threshold and the pressure threshold. This device can accurately determine whether the water meter is in a frozen state by collecting water temperature and water pressure, and the water meter quickly releases pressure to the water meter through the active switch pressure relief valve, thereby achieving the effect of active antifreeze of the water meter. Compared with the existing technology, it has better antifreeze effect, faster response, and better water saving.

The invention discloses a pipe pile for packaging a cold storage phase change material and a construction method of the pipe pile. The pipe pile comprises a concrete outer layer, a heat conduction structure layer, a heat insulation layer and a cold storage layer which are sequentially arranged from outside to inside. A connecting reinforcing block is arranged at the top of the concrete outer layer; a top packaging block is arranged at the top of the connection reinforcing block; a supplementing pipeline and a pressure balancing pipeline are arranged on the top packaging block; and the supplementing pipeline and the pressure balancing pipeline are both communicated with the cold storage layer. The special cold storage phase change material is packaged in the cold storage layer in the pipe pile, cold energy can be stored in the freezing period, the cold energy is gradually released in the melting period, soil around the pile is kept in a frozen state at the temperature of 0 DEG C or below, and the bearing capacity of a composite foundation in the hot season is not reduced; the phase change material can smoothen temperature fluctuation of soil around the pile, the freezing pulling phenomenon is eliminated, the bearing capacity of a foundation is more stable, and stability of an upper structure is facilitated.

This application discloses a photovoltaic control system and method for coping with extremely cold and snowy weather. The method includes the following steps: obtaining data from the inverter and photovoltaic panels; determining whether the cooling fan is frozen based on the data from the inverter and the cooling fan; if the cooling fan is frozen, adjusting the control loop corresponding to the inverter so that the inverter operates in SVG mode; determining the snow accumulation on the photovoltaic panel based on the environmental data and status data of the photovoltaic panel; and if the photovoltaic panel is snowed in, controlling the heating device installed on the photovoltaic panel to heat the photovoltaic panel. The system is used to implement the above method. The beneficial effects of this application include the ability to simultaneously defrost the cooling fan and remove snow from the photovoltaic panel, ensuring that the photovoltaic system can better cope with extremely cold weather. Furthermore, the defrosting of the cooling fan and the snow removal of the photovoltaic panel are both simple and safe, and do not require excessive hardware structure, ensuring that no excessive additional costs are incurred.

The invention discloses a Larsen steel sheet pile anti-seepage system based on fore shaft precise freezing and a construction method.The Larsen steel sheet pile anti-seepage system comprises a Larsen steel sheet pile supporting wall, a fore shaft freezing pipe system, a freezing circulation system and a monitoring control system, and the Larsen steel sheet pile supporting wall comprises a plurality of Larsen steel sheet piles which are connected through fore shafts; the fore shaft freezing pipe system is arranged at the fore shaft connecting position of the Larsen steel sheet pile supporting wall and can conduct local freezing on a gap of the fore shaft connecting position and the surrounding area of a fore shaft, the freezing circulation system provides low-temperature media for the fore shaft freezing pipe system, and the monitoring control system is arranged at the fore shaft connecting position and used for monitoring the fore shaft connecting position of the Larsen steel sheet pile supporting wall. According to the system, the freezing state of the fore shaft freezing pipe system can be monitored in real time, the working state of the freezing circulating system can be adjusted, the cost is low, the construction efficiency is high, the freezing area is shrunk to the fore shaft connecting position, the thermal load is small, the freezing efficiency is high, meanwhile, the freezing area accurately acts on a leakage source and blocks a leakage path, the anti-seepage effect is improved, and stability and reliability are achieved.

The invention relates to a freezing detection device and air conditioning equipment. The freezing detection device comprises a base, a communicating rod and a detection control assembly. The base is connected to a heat exchanger of the air conditioning equipment in a matched mode, and a connecting part protrudes out of the base. The communicating rod is connected with the connecting part, and a rotating fulcrum is formed at the joint of the communicating rod and the connecting part; the communicating rod is provided with a first end and a second end located on the two sides of the rotating fulcrum respectively. The detection control assembly is connected in the base in a matched mode and at least partially protrudes out of the outer surface, provided with the connecting part, of the base. The freezing detection device controls the driving force of the two ends of the communicating rod and judges the conduction state through the detection control assembly, and precise recognition of the freezing condition of the heat exchanger is achieved. After it is determined that the heat exchanger is in the frozen state, the detection control assembly closes the communicating pipeline of the lower heat exchanger in time, and the lower heat exchanger is cut off, so that the influence of refrigerant leakage light on the upper heat exchanger and the whole air conditioner equipment caused by pipeline breakage of the pipeline of the lower heat exchanger is avoided.

The utility model discloses a refrigerator, which is provided with a storage chamber, a refrigerating chamber and a refrigerating chamber, wherein the storage chamber is provided with a space capable of storing stored objects; an oscillation unit that forms high-frequency electric power; and a first electrode and a second electrode which are disposed facing each other, are connected to the oscillation unit, and receive high-frequency electric power from the oscillation unit to generate an electric field in the storage chamber. In the refrigerator, as the operation mode of the storage chamber, any two or more modes of a freezing mode for freezing the stored object, a storage mode for maintaining the frozen state of the stored object, and a thawing mode for thawing the frozen stored object are provided for the stored object arranged between the first electrode and the second electrode.

The invention provides an ultrasonic unfreezing device and an unfreezing method, and relates to the technical field of frozen product unfreezing. The interior of the box body is used for containing an unfreezing medium, the box body is arranged in the frame body, and an opening is formed in the top of the box body; the transmission chain system is annular, one part of the transmission chain system is in transmission inside the box body through the opening, the other part of the transmission chain system is in transmission outside the box body, and the two sides of the transmission chain system are in transmission on the two sides of the box body respectively; the two ultrasonic vibration plates are arranged in the box body and are respectively arranged above and below one part of the transmission chain system, and each ultrasonic vibration plate is provided with at least three ultrasonic generators with different frequencies; according to the method, the meat in a frozen state is pretreated by utilizing cavitation and micro-jet effects generated by multi-frequency combined ultrasound, so that the melting rate of ice crystals in the meat is increased, and the aim of quickly unfreezing is fulfilled.

The utility model provides a smoke exhaust pipe and a gas water heater comprising the same, the smoke exhaust pipe comprises a smoke exhaust pipe body, and the smoke exhaust pipe further comprises an induction coil, a power supply circuit, an interlayer and a magnetic attraction part. The induction coil is arranged in the smoke exhaust pipe body, the power supply circuit is arranged in the smoke exhaust pipe body and used for providing a periodic power supply, the interlayer is arranged in the smoke exhaust pipe body and connected with the power supply circuit, and the size of the interlayer can be changed according to temperature changes so as to drive the power supply circuit to be electrically connected or disconnected with the induction coil. The magnetic attraction part is arranged outside the smoke exhaust pipe body and can be attracted magnetically. When the temperature is higher than the preset temperature, the power supply circuit is disconnected with the induction coil; when the temperature is lower than the preset temperature, the power supply circuit is electrically connected with the induction coil, and the induction coil can drive the magnetic attraction part to knock the smoke exhaust pipe body so that the smoke exhaust pipe body can recover to the non-freezing state. And the gas water heater can return to a normal working state by knocking the ice layer open through the magnetic attraction part.

The application discloses a kind of fuel cell stack low-temperature cold start graded control method, comprising the following steps: (1), according to reference temperature, anode flow path frozen state, stack high-frequency impedance value, judge current freezing grade;(2), according to freezing grade and reference temperature, select corresponding heating start strategy;(3), after executing corresponding heating start strategy, enter transition operation stage, make that the outlet temperature of stack cooling liquid reaches threshold value;(4), after transition operation stage ends, enter normal temperature operation stage.The application is based on the graded control architecture of freezing grade evaluation, and the freezing grade of stack is comprehensively evaluated by multiple dimension parameters such as ambient temperature, stack temperature, anode flow path freezing detection and stack high-frequency impedance before starting, and the matching heating start mode is selected according to the evaluation result, to realize the self-adaptive graded control of different low-temperature working conditions.

The application relates to the field of heat exchange equipment, and particularly discloses an immersed salt solution phase change heat exchange device for a cold and heat combined supply system, which comprises a base sheet, heat exchange pipes and branch-shaped radiating fins, the inner channel arranged in the base sheet is used to make the phase change agent and the heat exchange agent have a larger contact area, the heat exchange efficiency is improved, and then the freezing and thawing efficiencies are improved; meanwhile, the spray holes arranged on the surface of the base sheet and communicated with the inner channel are used, the phase change agent liquid flow generates a spraying liquid flow through the spray holes, the heat exchange efficiency is improved, the crystallization of the phase change agent on the surface of the heat exchange pipe is reduced, the freezing and thawing speeds are accelerated, the first heat exchange equipment and the second heat exchange equipment with the same structure are arranged, freezing heat supply work and thawing cold supply work are carried out according to the freezing state, the circulation flow efficiency of the phase change agent and the heat exchange agent is improved, the demand for simultaneous cold supply and heat supply is met, and the stability of energy supply is improved.

The invention discloses a device for testing a pore structure and moisture migration characteristics in a single soil layer freezing process. The device comprises a sample box, an upper pressing plate, a lower pressing plate, a pressurizing rod, a first-stage temperature control environment box, a second-stage temperature control cold bath, a valve system and measuring equipment. A sealing ring layer is arranged in the sample box to prevent gas or liquid from permeating; the upper and lower pressing plates are provided with micropores, gas injection pipes, liquid injection pipes and the like for uniformly injecting and discharging gas and liquid; the measuring equipment dynamically monitors parameters such as pressure and liquid volume. The device can simulate the freezing state of a single-layer soil body, carry out a uniform freezing test, a pore characteristic test and a seepage characteristic research, reveal the distribution rule of pore ice, unfrozen water and gas, and establish a water migration model. According to the invention, the pore structure and the moisture migration characteristic in the soil freezing process can be accurately tested, and a scientific basis is provided for solving the problem of engineering freezing injury.

The application discloses a kind of meat superchilling easy cutting control method and device based on refrigerator, method includes: control meat hardness detection module's film pressure sensor real-time sensing detection gelatinous substance swelling situation of analog meat state, and gelatinous substance swelling situation extrusion film pressure sensor, make the resistance change signal of film pressure sensor generation;Control the resistance change signal of film pressure sensor generation, through DAC digital-analog converter is converted into resistance change digital signal, obtain the hardness and frozen state grade of current meat;According to the resistance change digital signal of conversion, control the damper switch of refrigerator specified position, and control the start-stop of refrigeration of refrigerator specified position, to control the hardness and frozen state grade of current meat is in predetermined superchilling easy cutting state.The application reduces control cost;Directly carry out refrigeration control at the same time, the maintenance of meat superchilling easy cutting state is more stable, and preservation effect will be better.

The application discloses a water heater and relates to the technical field of household appliances. The water heater comprises a smoke exhaust pipe, the smoke exhaust pipe comprises a smoke exhaust pipe body and a heating device, the heating device is used for heating the smoke exhaust pipe body so that the smoke exhaust pipe body returns to a non-frozen state, the smoke exhaust pipe further comprises a power generation device, a first driving device and a second driving device, the power generation device is electrically connected to the heating device, and the power generation device is used for supplying power to the heating device. When the water heater is in an open state, the first driving device is powered to enable the first driving device to drive the power generation device to open or close according to temperature change. When the water heater is in a closed state, the second driving device can change its own size according to temperature change to drive the power generation device to open or close. No matter whether the water heater is in the open state or the closed state, the smoke exhaust pipe can achieve good anti-freezing effect, avoid blockage of the smoke exhaust pipe, and save electric energy consumption.

The present invention discloses an anti-freezing device for a charging gun in alpine regions, which relates to the technical field of charging guns. The present invention includes a plug, an end panel and a handle, and the plug is connected to the power receiving end through a buckle. Heating sheets are embedded in the unlocking button and the buckle movable plate of the device, and anti-freezing is achieved through a thermistor and a force-sensitive resistor. When low-temperature freezing occurs, pressing the unlocking button triggers the heating sheet to melt the ice, ensuring smooth plugging and unplugging; after the temperature recovers, the thermistor automatically cuts off the power to avoid energy waste. The dual force-sensitive resistors detect the frozen and unfrozen states, enhancing stability. The electromagnetic solenoid-assisted unlocking is combined with mechanical transmission to improve flexibility. The reset tension spring and the limiting convex block ensure the durability of the structure. The device effectively solves the problem of freezing of the charging gun in alpine environments, improving the use reliability and operation convenience.

The invention discloses a low-boiling-point liquefied gas cold energy recovery anti-freezing gasifier, and belongs to the technical field of gasifiers. An upper parallel flow tube plate and a lower parallel flow tube plate, wherein the upper parallel flow tube plate and the lower parallel flow tube plate are oppositely arranged in the shell; the condensation end of the heat pipe / micro heat pipe array is arranged on the upper parallel flow pipe plate, and the evaporation section of the heat pipe / micro heat pipe array is arranged on the lower parallel flow pipe plate; wherein low-boiling-point liquefied gas is introduced into the upper parallel flow tube plate, a secondary refrigerant is introduced into the lower parallel flow tube plate, and the freezing point of the secondary refrigerant is lower than-20 DEG C; according to the working medium packaged in the micro heat pipe array, when the temperature of the working medium is lower than-20 DEG C to 0 DEG C, a heat pipe is in a dormant or frozen state, and operation is stopped. The problem that a traditional dividing wall type heat exchanger is frozen or even destroyed when the dividing wall type heat exchanger is shut down is solved, and meanwhile energy generated when low-boiling-point liquefied gas is gasified is well recycled.

This invention discloses a self-optimizing control system for ice cream production parameters, relating to the field of production control technology. It includes: a working condition construction module, which collects process operating parameters of a continuous freezing section, divides the process into time periods according to different operating stages, and maps the process operating parameters of each time period to the current position of each actuator, forming a working condition page; a state classification module, which extracts freezing state features from the working condition page, classifies the freezing sections, and matches them with historical operation segments, forming a freezing state table and a list of reachable paths; and a sequence optimization module, which uses a working condition transition sequence optimization algorithm to progressively expand the adjustment parameters corresponding to the freezing state table and the list of reachable paths, and uses a sequence forward convergence pruning algorithm to filter out sequences that deviate from the target production zone and disrupt continuous output, forming candidate operation chains. This invention significantly reduces the effective search space and ensures the safety of the adjustment process through the sequence forward convergence pruning algorithm.

This invention discloses a method and system for monitoring the antifreeze properties of finned tube bundles in direct air-cooled islands, relating to the field of temperature measurement technology for direct air-cooled units. The method includes acquiring temperature monitoring data of the finned tube bundle surface, calculating the antifreeze margin from the temperature monitoring data to obtain antifreeze status data; pre-setting an antifreeze monitoring model and inputting the antifreeze status data into the model; and intelligently monitoring and locating the freezing status of the finned tube bundle based on the output of the antifreeze monitoring model. This invention ensures the effectiveness of monitoring and improves the efficiency of temperature data acquisition by establishing a one-dimensional temperature monitoring deployment scheme. By locating freezing based on the working fluid flow characteristics, temperature anomalies in the finned tube bundle are classified into different risk levels, and corresponding antifreeze assessment methods are adopted, improving the accuracy of freezing identification. A real-time monitoring and evaluation system is established through antifreeze margin indicators, and the antifreeze monitoring scheme is regularly updated and optimized to improve monitoring efficiency.

The present invention provides a large-scale insulation facility for a tailings pond overflow well, belonging to the technical field of insulation facilities for tailings pond overflow wells. The present invention includes an inner and outer ring of an insulation shed, an insulation shed roof, overflow well columns, an overflow well ring beam, etc. The insulation shed is arranged on a floating bridge platform, and a pulley block is fixed to the four corners of the top overflow well ring beam by fixing bolts. A steel wire rope is arranged through the pulley block, one end of the steel wire rope is wrapped around a winch, and the other end of the steel wire rope is connected to the insulation shed roof. A connector connects the winch to the floating bridge platform, and the insulation shed is equipped with a temperature monitoring system. The present invention can keep a certain area around the overflow well in an unfrozen state all year round, eliminating the safety hazards posed by the frozen layer to the overflow well structure.

The invention discloses an anti-freezing device for a charging gun in an alpine region, and relates to the technical field of charging guns. The device comprises a plug, an end panel and a handle, wherein the plug is connected with a power receiving end through a buckle. According to the device, heating pieces are embedded in an unlocking button and a buckle movable plate, and freezing prevention is achieved through a thermistor and a force sensitive resistor. When low-temperature freezing occurs, the unlocking button is pressed to trigger the heating piece to melt ice, and smooth plugging and unplugging are ensured; and after the temperature recovers, the thermistor is automatically powered off to avoid energy waste. And the double force-sensitive resistors detect freezing and non-freezing states, so that the stability is enhanced. Electromagnet auxiliary unlocking is combined with mechanical transmission, and the flexibility is improved. The reset tension spring and the limiting protruding block ensure that the structure is durable. The device effectively solves the problem that the charging gun is frozen in the high and cold environment, and improves the use reliability and operation convenience.

The invention relates to the technical field of corrugated board processing and manufacturing, and discloses a carton cutting process for improving carton production yield, which comprises the following steps: determining a corrugated board cutting path by utilizing machine vision; spraying the phase change pretreatment liquid along the path to form a wet infiltration area; applying lateral tensile tension to the two sides of the infiltration area before the liquid is frozen, so that the fibers are in a tensile orientation state; keeping tension, performing subzero treatment, and freezing the pretreatment liquid to lock the fiber network; cutting and separating by using a cutter in a freezing state; and after cutting, the solid medium at the notch is gasified and volatilized. According to the method, through the synergistic effect of liquid phase infiltration, tension induced orientation and cryogenic phase change locking, flexible fibers are converted into rigid brittle bodies for fracture separation, collapse of a corrugated structure and generation of edge burrs are effectively prevented, rapid drying and no residue are achieved through the high volatilization characteristic of media, and the carton processing precision and the yield are obviously improved.

The invention discloses a hydraulically-driven anti-freezing automobile active diffuser and a control method thereof in the technical field of automobile manufacturing, and the hydraulically-driven anti-freezing automobile active diffuser comprises a control output mechanism which is installed on the upper portion of an anti-collision beam and comprises a controller and a hydraulic pump, and the controller controls power output of the hydraulic pump according to a whole automobile instruction; the output end of the hydraulic pump pushes pressurized liquid to the hydraulic rod through the hydraulic guide pipe; the mounting base is mounted at the lower part of the anti-collision beam, and the lower end is rotationally connected with the diffuser panel; the two ends of the hydraulic rod are rotationally connected with the mounting base and the diffuser panel correspondingly, and the rotating angle of the diffuser panel is controlled through stretching and retracting; and the heating device is mounted on the surface of the diffuser panel and used for heating the whole structure based on the controller. The heating anti-freezing function is achieved through the heating device, if a local freezing state is generated in frost weather, the basic function can be achieved through heating, in addition, the hydraulic rod can output high transmission force, and icebreaking starting is easier under the freezing condition.

To shorten the work period while efficiently using cold energy in a ground freezing method using a shield machine. [Solution] The ground excavation method comprises the steps of erecting a resin freezing outer pipe in the ground, inserting an inner pipe into the freezing outer pipe erected in the ground, supplying a refrigerant from the inner pipe, and freezing a frozen area with cold heat from the freezing outer pipe, changing the cold heat range so that cold heat is applied mainly to a surface-side non-excavation area of ​​the frozen area that is located closer to the ground surface than the excavation area through which the shield machine passes, thereby maintaining the frozen state of the surface-side non-excavation area, and excavating the excavation area with the shield machine while leaving the freezing outer pipe in place within the excavation area.

The invention relates to a stabilizing device for an oil and gas well mouth in a frozen soil zone. The stabilizing device comprises a cooling assembly used for cooling a soil layer around the well mouth, a heat conduction assembly used for conducting heat transmitted to the soil layer by drilling fluid in an oil and gas well to the ground, and a heat insulation assembly installed between the heat conduction assembly and the cooling assembly. The heat conduction assembly comprises a first heat conduction piece and a second heat conduction piece, wherein the first heat conduction piece is arranged outside a casing pipe used for circulating the drilling fluid in a sleeving mode, and the second heat conduction piece is installed on the soil layer and connected with the first heat conduction piece. And the heat insulation assembly is constructed to be capable of separating the heat conduction assembly from the cooling assembly, so that the cooling assembly can enable the soil layer to be always kept in a frozen state in the process that the first heat conduction piece conducts the heat to the ground through the second heat conduction piece. Therefore, the problem that the bearing capacity of the stratum is reduced due to the fact that the soil layer near the wellhead melts due to temperature rise can be solved, and instability damage of the oil and gas wellhead is avoided.

A control method and system of an ice making device as well as a refrigerator having the same. The control method includes receiving first detection data of a detection sensor on an ice-making water injection pipe after ice is turned over and before water is injected; judging whether ice exists in the ice-making water injection pipe according to the first detection data; and turning on a heating assembly when ice exists in the ice-making water injection pipe. In the control method of an ice making device according to the present invention, the detection sensor is provided, whether the water injection pipe is frozen is judged by the detection sensor detecting whether ice exists, the detection method is more accurate, a freezing state of the ice-making water injection pipe can be known more accurately, and the heating assembly can be turned on more efficiently to unfreeze the ice-making water injection pipe.