77 results about "Ice binding" patented technology

The invention relates to a control method for a frostless refrigerator. An additional heating wire is installed on the back of the refrigerating chamber of the frostless refrigerator. An air duct heating wire is arranged in the air duct system of the frostless refrigerator. Both the additional heating wire and the air duct heating wire are respectively connected with a magnetic sensitive switch and are controlled to heat by means of the magnetic sensitive switch. When the ambient temperature t is lower than or equal to t1, a heating wire control circuit is switched on and the additional heating wire and the air duct heating wire start heating. When the circuit is switched on and the ambient temperature t is higher than or equal to t2, the magnetic sensitive switch acts and the heating wire control circuit is switched off. The additional heating wire and the air duct heating wire stop heating. According to the invention, through increasing refrigerated load and refrigerated cycle wind, the functional faults, such as frosting and icing in an air duct system and the like, caused by less cycle wind when the refrigerator is used in a low-temperature harsh environment, can be solved, thus the stability and reliability of the mechanical frostless refrigerator can be improved.

The invention relates to the technical field of fire-fighting equipment, and discloses a high-safety winter anti-freezing fire-fighting nozzle which comprises a fire-fighting nozzle body. A threaded pipe is arranged at the top of the fire-fighting nozzle body, a fire-fighting water inlet is arranged in the threaded pipe, a water blocking plug is movably installed at the bottom of the fire-fightingwater inlet, and two sealing gaskets are fixedly installed between the periphery of the water blocking plug and the bottom end of the fire-fighting water inlet and located on the water blocking plug.A glass ball is arranged under the water plugging plug, and the glass ball is filled with heat-sensitive liquid. According to the high-safety winter anti-freezing fire-fighting nozzle, a special-shaped deicing tray is arranged to be in the shape of a plane with the top end concaved inwards, the top end of the special-shaped deicing tray can be a weak stress face, when water in the fire-fighting water inlet is iced and expanded in volume, the special-shaped deicing tray breaks preferentially compared with the glass ball, and the ice in the fire-fighting water inlet is in contact with exposed sodium chloride powder in the special-shaped deicing tray to reduce the freezing point, so that the problem that freezing continues to generate to squeeze the glass ball to cause damage is avoided.

The invention discloses an electric compression evaporation direct cooling type ice-bound pressure retaining corer. A fully sealed type refrigeration compressor is used for compressing refrigeration agents and directly performs refrigeration through evaporation at the outer wall of an ice valve pipe; and a fully sealed direct current compressor provides electric energy for driving through the short circuit connection of a hole bottom storage battery. The fully sealed type refrigeration compressor is used as a cold source; all refrigeration agent passages are connected through welding connectors; the problem of work incapability of a refrigeration system due to entering of liquid such as water into a refrigeration agent circulation pipeline can be effectively avoided; the required refrigeration quantity is regulated through regulating the electricity storage quantity of the storage battery; the sufficient cold quantity supply can be ensured; the system complexity is greatly reduced; the storage battery provides the power supply, so that the refrigeration compressor can be in a work state until a rock core sample is taken out from the ground surface in the whole rock core extraction process; and the continuous refrigeration is performed, so that the ice valve sealing reliability in the core taking operation process can be ensured.

The invention relates to an optical fiber type ice binding state sensor, and belongs to the photoelectric sensors. The problem that an existing icing sensor cannot be used for judging the ice layer and material surface binding state is solved, and the optimal shock excitation opportunity is conveniently selected for an electric heating-shock excitation composite type ice removal method. The optical fiber type ice binding state sensor comprises M transmitting optical fiber bundles and N receiving optical fiber bundles, one end of the M transmitting optical fiber bundles and one ends of the N receiving optical fiber bundles are bundled into a metal shell to form concentrated optical fiber bundles, the end face of the optical fiber bundles forms a detecting end, one light source device is installed at the other end of each of the M transmitting optical fiber bundles, and spectrums of the M light source devices are different; and one photoelectric receiving device is installed at the other end of each of the N receiving optical fiber bundles. The optical fiber type ice binding state sensor is small in size, light, capable of achieving multi-point distribution, free of movable accessories, high in reliability and simple in signal treatment, the optical fiber type ice binding state sensor can be used for analyzing influences of phase changes of an ice layer on the object surface on different spectral signals after temperature changes, and the optical fiber type ice binding state sensor is suitable for detecting the binding state of the object icing surface and the ice layer.

The invention discloses an anti-freezing system, an anti-freezing heat exchanger and application, and belongs to the field of heat pump systems. The technical problem that under the condition that existing heat exchangers cannot use heat in the outside world during power failure, water pipes in heat exchange pipes are frost-cracked due to freezing is solved. The anti-freezing system comprises an outer pipe. An inner pipe is arranged in the outer pipe. The inner pipe is a hollow elastic hose. Under the condition that water is supplied, the expansion size caused by freezing is offset through shrinkage of the inner pipe during freezing, and the situation that because the outer pipe freezes and is expanded, the outer pipe cracks is prevented. The inner pipe is a silica gel pipe, a rubber pipe or a pearl wool pipe and is low in cost and easy to manufacture. The hollow part of the inner pipe is filled with inert gas, gas tightness and water tightness are good, and the inert gas is safe and good in stability. One end of the inner pipe is a fixed connector, and the other end of the inner pipe is a closed end. The fixed connector is fixed to the outer pipe, and the closed end extends into the outer pipe. By means of the anti-freezing system, the anti-freezing heat exchanger and the application, efficient heat exchange and freezing prevention are achieved, the structure is simple, the price is low, and installation is convenient.

The invention discloses a food preservation control method and device, and a refrigerator. The method comprises the following steps: when the operation of putting a food is detected, cooling a compartment; monitoring the temperature of the food in real time in the cooling process; automatically determining a freezing point and/or a supercooling point of the food according to the temperature change and the temperature duration of the food; and storing the food according to the freezing point and/or the supercooling point of the food. According to the invention, based on the temperature change and the temperature duration of the food in the cooling process for the compartment, the freezing point and/or the supercooling point of the food placed in the compartment can be automatically determined, the temperature of the compartment is further automatically controlled to be the proper temperature for food storage, and automation and intelligence of ice temperature or super-ice temperature storage for the food are realized; and a user does not need to manually input the storage temperature or the name of the food, the operation difficulty of the user is simplified, the situation that the preservation period is affected by food freezing due to an improper temperature input by the user is avoided, and the user experience is improved.

The invention relates to the technical field of water drop icing and ice prevention, in particular to a water drop icing visualization experiment device and application thereof. At present, observation of water drop suspension in-phase icing cannot be carried out due to frosting and temperature limitation. The invention provides a water drop icing visualization experiment device which comprises a cabin door, the cabin door is connected with a shell, a temperature adjusting assembly is arranged in the shell, a suspension liquid drop generating assembly and a liquid drop generator are arranged in the shell, and the liquid drop generator is used in cooperation with the suspension liquid drop generating assembly; the cabin door is provided with an observation window, the observation window is connected with a vacuumizing assembly, and the cabin door can be connected with the shell in a sealed mode. The suspension freezing process observation of water drops in nitrogen environments at different temperatures can be realized, the size of the water drops, the suspension position of the water drops and the internal temperature of the cold cavity can be changed, and the suspension freezing process of the water drops can be obtained through experiments.

A coating applied to a surface to minimize or prevent the ability of drops of super-cooled water that impact on the surface from transforming into ice, comprises one or more layers collectively providing: a) thermal insulation between the surface to be protected and the drop; and b) a superhydrophobic surface on the top.

The invention provides a water conservancy ecological engineering desilting device which comprises a base and a collecting box, and a plurality of anti-supercooling assemblies capable of preventing the surface temperature of the collecting box from being too low are fixedly installed at the lower ends of the outer surfaces of the front side, the rear side and the left side of the collecting box in an equally adjacent mode. The anti-supercooling assembly comprises a shell, a moving assembly capable of automatically moving under the cold condition and a heating assembly capable of generating high-temperature heat. A plurality of shells are fixedly installed at the lower ends of the outer surfaces of the front side, the rear side and the left side of the collecting box in an equally adjacent mode, each shell is in a hollow and totally-closed cylindrical shape, and the shells are made of copper. According to the desilting device for the water conservancy ecological engineering, the effect that the collecting box has an anti-supercooling function can be achieved, even if the desilting device works in cold weather in winter, residual water in the blow-off pipe is not prone to icing due to the outdoor low temperature, ice blocks in the blow-off pipe can be dredged in time before operation, and normal operation of the desilting device is guaranteed.

The invention discloses a fresh air machine anti-freezing control method, a fresh air machine and a computer readable storage medium, the fresh air machine comprises a fresh air duct, an exhaust air duct and a total heat exchanger, air in the fresh air duct and air in the exhaust air duct are subjected to heat exchange at the position of the total heat exchanger, and a fourth heat exchange part is arranged in the exhaust air duct. The method comprises the steps that the exhaust air temperature before passing through the total heat exchanger in the exhaust air duct and the fresh air temperature before passing through the total heat exchanger in the fresh air duct are obtained; and when the fresh air temperature is smaller than or equal to the freezing temperature and the sum of the exhaust air temperature and the fresh air temperature is smaller than a first preset threshold value, the fourth heat exchange part is controlled to heat the air temperature in the exhaust air duct, and the first preset threshold value is larger than 0 DEG C. The effect of effectively preventing the frosting risk of the total heat exchanger is achieved.

The invention provides an anti-freezing defrosting control method and an air conditioner, and relates to the technical field of air conditioners. The anti-freezing defrosting control method is appliedto the air conditioner. The control method comprises the steps that the current I of an indoor fan is detected; according to the current I, the speed increasing change rate delta k and the amplification delta A of the current I are obtained; and according to the speed increasing change rate delta k and the amplification delta A, anti-freezing protection is started. Due to the fact that after a heat exchanger of an indoor unit is frosted, frost is attached to the surfaces of fins of the heat exchanger, even the fins of the heat exchanger are blocked, the air circulation resistance is increased, the air volume is rapidly reduced, and the current of the indoor unit is increased. Therefore, the speed increasing change rate delta k and the amplification delta A of the current I are obtained bydetecting the current I of the indoor fan, whether the heat exchanger of the indoor unit is frosted or even frozen or not can be accurately judged according to the speed increasing change rate deltak and the amplification delta A, and as a result, anti-freezing protection is started in time, the heat exchanger of the indoor unit is prevented from being frosted and frozen too much, and the refrigerating effect of the indoor unit is guaranteed.

The invention relates to a cold-resistant water meter. The water meter comprises a water meter body, a shell is arranged at the middle end of the water meter body, a connecting sleeve is arranged in the shell, a partition plate is arranged at the top of the connecting sleeve, the two ends of the partition plate make contact with anti-freezing pads respectively, a connecting rod is arranged at themiddle axis of the partition plate, a rotating rod is fixedly connected to the bottom of the connecting rod, and the top of the connecting rod penetrates through the partition plate and extends to theouter side of the partition plate. A protection pad and a heating pipe are arranged, when the air temperature is low, a heating wire is started, the heating wire generates heat, heat is released fromthe water meter body, so that the problem that a water meter body is frozen to affect the lives of residents is avoided; an anti-freezing cover is arranged, the dial plate is protected, the situationthat the device is damaged due to frost cracking of the dial plate is prevented, the situation that the interior of the water meter body is frozen or the dial plate is frozen to be damaged is effectively prevented, the service life of the water meter body is prolonged, the anti-freezing effect of the water meter body is enhanced, and the safety is improved.

The invention discloses a refrigerator drain pipe freezing and blocking monitoring system. The refrigerator drain pipe freezing and blocking monitoring system comprises a drain pipe freezing monitoring device; the drain pipe freezing monitoring device comprises a fixing bracket, an ultrasonic transmitting probe and an ultrasonic receiving probe. The fixing bracket is installed on the initial portion of a drain pipe, and the ultrasonic transmitting probe is installed on the fixing bracket and can transmit a monitoring signal. The ultrasonic receiving probe is installed on the fixing bracket, the ultrasonic transmitting probe and the ultrasonic receiving probe are oppositely arranged, and the monitoring signal penetrates through a pipeline and a medium in the pipeline to be received by an ultrasonic probe. The refrigerator drain pipe freezing and blocking monitoring system can judge whether the drain pipe of a refrigerator is frozen and blocked or not and give out an alarm in time afterthe drain pipe is frozen and blocked. Meanwhile, the monitoring system can cooperate with a heating device to melt ice, ice melting is stopped in time after ice melting of the drain pipe is completed,and complex procedures and high fees caused by manual refrigerator disassembling for ice melting can be avoided.

The invention discloses a low-temperature self-heating type anti-freezing water pipe, and belongs to the technical field of water pipe freezing prevention. The low-temperature self-heating type anti-freezing water pipe comprises a pipe body, magnet blocks and self-heating mechanisms, wherein the magnet blocks are arranged on two sides of the pipe body; the multiple self-heating mechanisms are arranged inside the pipe body; a faucet connecting block is fixedly connected to the outer wall of one side of the pipe body; a sealing cover is connected to the top end of the pipe body in a threaded mode; a sealing plug matched with the pipe body is fixedly connected to the inner wall of the sealing cover; an insulating layer matched with the pipe body is fixedly connected to the inner wall of eachmagnet block; a connecting hole matched with the faucet connecting block is formed in the outer wall of one of the magnet blocks; and the multiple self-heating mechanisms are uniformly distributed ontwo sides of the interior of the pipe body. The self-heating mechanisms in the water pipe can spontaneously generate heat to heat water in the water pipe along with the reduction of the temperature soas to prevent the water from freezing, and thus, the water pipe is prevented from cracking; and besides, the self-heating mechanisms are convenient to replace, the practicability is high, and the low-temperature self-heating type anti-freezing water pipe is suitable for being popularized.

The invention discloses an intelligent anti-frost-crack water meter and a working method thereof.The intelligent anti-frost-crack water meter comprises a dial plate cavity and a water flowing cavity, the dial plate cavity is located above the water flowing cavity and communicates with the water flowing cavity, and the two ends of the water flowing cavity are connected with a water inlet pipe and a water outlet pipe correspondingly; the water meter body comprises a dial plate part and an impeller part, the dial plate part is installed in the dial plate cavity, the lower end of the impeller part extends into the water flowing cavity, and the water meter body is slidably connected with the shell; a proximity switch is arranged at the top of the dial cavity, and a heating assembly and a temperature sensing device are arranged in the water flowing cavity. The water meter can be prevented from being frozen to crack when the temperature is too low in winter, the situation that an anti-freezing assembly in the water meter starts to operate without freezing is effectively avoided, energy consumption can be effectively reduced, and energy waste is reduced.

The invention belongs to the technical field of heat exchangers, and discloses an anti-frost device and a heat exchanger. The anti-frost device comprises fins, a bottom plate and a pipeline assembly, the fins are installed on the bottom plate, an air flow channel is arranged between the fins and the bottom plate, the pipeline assembly comprises a liquid inlet pipe and bottom branch pipes, and the liquid inlet pipe communicates with the bottom branch pipes. The bottom branch pipes are laid at the ends, close to the bottom plate, of the fins, one-way pieces are arranged on the bottom branch pipes, and the flow guide direction of the one-way pieces is from the bottom branch pipes to the liquid inlet pipe. The heat exchanger comprises a box body and the anti-frost device, the anti-frost device is installed on the box body, and the bottom plate is located at the bottom of the box body. The pipeline assembly can conduct a refrigerant, when heating work is executed, the low-pressure and low-temperature refrigerant does not pass through the bottom branch pipes at the ends, close to the bottom plate, of the fins, freezing caused by the too low temperature of the bottom plate is prevented, the air flow channel can increase the air flow, volatilization of accumulated water on the bottom plate is accelerated, and then the heat exchange performance of the heat exchanger is improved.