36results about How to "Timely defrosting" patented technology

The invention discloses a defrosting method for a heat-pump type air conditioner, which decides whether the defrosting operation mode, namely setting environment determination temperature t<1> and t<2> and three constants a, b and c, is carried out by combination of coil tube temperature T of an outdoor heat exchanger, outdoor temperature T, actual heating time H and set heating time h; under the following conditions, the unit starts the defrosting operation mode: 1. when T is less than or equal to t<1> and more than or equal to t<2>, if the coil tube temperature T of the outdoor heat exchanger meets the condition of T less than a, T plus c and H larger than h in a continuous M minutes, the unit starts to defrost; 2. when T is less than t<2>, if the coil tube temperature T of the outdoor heat exchanger meets the conditions of T less than b, T plus c and H larger than h in a continuous M minutes, the unit starts to defrost. The defrosting method has the advantages of shortening defrosting time, improving defrosting efficiency, leading to thorough defrosting and greatly improving heating efficiency.

The invention provides a method for controlling the defrosting of a refrigerator. The method comprises the following steps of: (A) detecting the environmental moisture and the environmental temperature of a refrigerator; (B) counting the opening frequency and the opening time of the refrigerator to obtain a cumulative opening frequency and a cumulative opening time; and (C) detecting the cumulative opening frequency and the cumulative opening time according to a specified time interval and defrosting the refrigerator when either the cumulative opening frequency or the cumulative opening time is larger than a preset specified value and the environmental moisture and the environmental temperature which are detected are under the specified conditions. Accordingly, a start defrosting point can be accurately confirmed according to practical environmental conditions, the operation conditions to the refrigerator, and the like so as to defrost in time to a certain degree and effectively reduce the power consumption.

The invention discloses an automatic defrosting control method for a frost free refrigerator. The method comprises a step of: intelligently judging a defrosting pointcut, namely testing evaporation temperature, refrigerating chamber temperature, environment temperature and real-time running state of the refrigerator, judging the attenuation degree of the heat exchange capacity of an evaporator ofthe refrigerator according to a set algorithm of the control method, and further judging the defrosting pointcut to automatically control the defrosting process. By the method, defrosting cut accuracy and exit timeliness are realized, the energy efficiency level and refreshing quality of the refrigerator are improved, and the intelligent control level of the refrigerator is improved.

The invention relates to the technical field of air-conditioners, and discloses an air-conditioner defrosting system. The air-conditioner defrosting system comprises a refrigerating fluid loop, the refrigerating fluid loop comprises a compressor, an indoor heat exchanger, a throttling gear and an outdoor heat exchanger which are connected through pipes, and the indoor heat exchanger is arranged in an indoor unit; the air-conditioner defrosting system further comprises a bypass branch way, a pipe temperature sensing package, an air outlet temperature sensing package, an electrical heating piece and a controller; the bypass branch way is used for defrosting for the outdoor heat exchanger, the first end of the bypass branch way is connected with the pipeline between the compressor and the indoor heat exchanger, the second end of the bypass branch way is connected with the pipeline between the throttling gear and the outdoor heat exchanger, and an adjusting valve for adjusting the refrigerating fluid flow is arranged on the bypass branch way; the pipe temperature sensing package is used for detecting the pipe temperature of the outdoor heat exchanger; the air outlet temperature sensing package is used for detecting the air outlet temperature of the indoor unit; the electrical heating piece is used for regulating and controlling the air outlet temperature of the indoor unit; and the controller is electrically connected with the adjusting valve, the pipe temperature sensing package, the air outlet temperature sensing package and the electrical heating piece. By means of the air-conditioner defrosting system, the fault rate of a reversing valve can be reduced, meanwhile, a user can be prevented from being blown with cold air, and the user comfort is improved.

The invention provides a defrosting control method of a refrigerator. The method comprises the steps of counting total working hours and door opening and closing times of the refrigerator from the last initialization operation of the refrigerator, and obtaining the ambient temperature and the ambient humidity of the refrigerator; obtaining a defrosting starting condition preset by the refrigerator, wherein the defrosting starting condition is that the number of door opening and closing times reaches a threshold of the number of the door opening and closing times, and the threshold of the number of the door opening and closing times is determined according to the total working hours, the ambient humidity and the ambient temperature; judging whether the refrigerator satisfies the defrosting starting condition, and if the refrigerator satisfies the defrosting starting condition, generating a defrosting starting trigger signal is generated. According to the defrosting control method, the threshold of the number of the door opening and closing times is determined according to the ambient humidity, the ambient temperature and the total working hours of the refrigerator, so that a defrosting starting point can be accurately determined according to the parameters of actual ambient conditions such as the ambient humidity, the ambient temperature and the like and working conditions such as the total working hours and the door opening and closing times of the refrigerator, and defrosting can be accurately performed in time according to actual conditions.

The invention provides a defrosting processing method and defrosting control device for a refrigerator. The refrigerator comprises a compressor and an evaporator. The defrosting processing method for the refrigerator comprises the steps of detecting the operation time of the compressor, the inlet temperature of the evaporator and the door opening and closing state of the refrigerator; according to the operation time of the compressor, the inlet temperature of the evaporator and the door opening and closing state of the refrigerator, determining whether defrosting processing is needed or not. According to the technical scheme, estimation precision of the amount of frosting on the surface of the evaporator is improved, reasonability of the defrosting process is improved, the problem that the amount of frosting on the surface of the evaporator is large due to the fact that the defrosting process is started earlier or later is avoided, and the using effect of the refrigerator is ensured.

The invention relates to a refrigerator monitoring device based on refrigerator door opening / closing states and humidity detection. The refrigerator monitoring device comprises a plurality of contact-type position sensors, a humidity sensor and a master controller, wherein each contact-type position sensor is positioned on the inner side of a corresponding refrigerator door, and is used for detecting the opening / closing state of the corresponding refrigerator door; the humidity detector is used for detecting the humidity in a refrigerator; the master controller is connected with the humidity detector and each contact-type position sensor, and is used for determining whether to start frost detection and automatic defrosting of the refrigerator according to the received humidity in the refrigerator and the opening / closing states of a plurality of refrigerator doors. Through the refrigerator monitoring device, the frost detection and the automatic defrosting of the refrigerator can be performed timely when the refrigerator doors are opened too long or the humidity in the refrigerator is overhigh, and the defrosting efficiency of the refrigerator is improved.

The invention discloses a defrost control method for an air-conditioner. The method comprises the steps of detecting the refrigerant pressure of a heat exchanger, acquiring a corresponding saturation temperature according to the detected refrigerant pressure of the heat exchanger, acquiring the dew point temperature of the environment, and controlling the air-conditioner to enter a defrost mode when the corresponding saturation temperature is lower than 0 DEG C and lower than or equal to the dew point temperature of the environment. The invention further discloses a defrost control device for an air-conditioner. It can be guaranteed that defrosting can be conducted in time when frost exists, the situation that defrosting is conducted when no frost exists is avoided, energy consumption is reduced, and the service life of the air-conditioner is prolonged.

Disclosed are a defrosting system of a heat pump water heater and a control method of the defrosting system. The defrosting system comprises a compressor, a condenser, a throttling element, a liquid accumulator, an evaporator and a gas-liquid separator which are sequentially connected, a first electric heating pipe is welded in the liquid accumulator and serially connected with a first temperature controller disposed in the liquid accumulator to be connected with a controller, a second electric heating pipe is welded in the gas-liquid separator and serially connected with a second temperature controller disposed in the gas-liquid separator to be connected with the controller, a compressor exhausting temperature sensor is arranged on the pipe wall of an exhausting pipe of the compressor, an evaporator outlet temperature sensor is arranged in an outlet pipeline of the evaporator, a water temperature sensor contacting with water is arranged in the condenser, the compressor exhausting temperature sensor, the evaporator outlet temperature sensor and the water temperature sensor are all connected with the controller, and the throttling element is also connected with the controller. By the defrosting system, the problems of low water temperature, long defrosting time, low defrosting efficiency, inaccurate judgment on controlling of defrosting starting and defrosting finishing and the like in the process of defrosting can be solved.

The invention discloses an air conditioner control method and device, a storage medium and an air conditioner. The method comprises the steps of determining a heat comfort state of an indoor environment of an air conditioner, and determining a frosting situation of an outdoor heat exchanger of the air conditioner; and according to the heat comfort state of the indoor environment and / or the frosting situation of the outdoor heat exchanger, determining a current operation mode of the air conditioner, and controlling the air conditioner to operate according to the current operation mode, whereinthe step of controlling the air conditioner to operate according to the current operation mode comprises: controlling the air conditioner to continuous operate at a heating mode, and controlling the air conditioner to reduce the output heat so as to operate, or controlling the air conditioner to operate at a defrosting mode, or controlling the air conditioner to stop or reduce frequency so as to operate. According to the scheme provided by the invention, the problem that since whether the air conditioner enters the defrosting mode or not is judged according to the temperature of the outdoor heat exchanger or a difference value between the temperature of the outdoor heat exchanger and the outdoor environment temperature, the heat comfort experience of a user is affected due to big indoor temperature drop during defrosting can be solved, and an effect on improving the heat comfort experience of the user during defrosting is achieved.

The invention discloses a multifunctional ventilating and freshness retaining refrigerator. Ventilation and freshness retaining of the refrigerator are necessary. The quality of air in the refrigerator can be visually known through a display screen; by a ventilation indicator lamp and a defrosting indicator lamp, ventilation, deodorization and defrosting of the refrigerator can be carried out by a user conveniently in time; an air feeding tube is in sleeving connection with an air discharging tube, so that the temperature can be changed conveniently; and owing to the multifunctional refrigerator, the user feels comfortable in the daily life.

The invention relates to the field of air-conditioner technology and discloses an air-conditioner defrosting system which comprises a refrigerant circuit. The refrigerant circuit comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger connected through a pipeline, wherein the indoor heat exchanger is arranged in an indoor unit and the indoor unit is provided with an inner blower for indoor air supply. The air-conditioner defrosting system further comprises a bypass shunt, a pipe line temperature sensing bulb, an air-out temperature sensing bulb and a controller, wherein the bypass shunt is used for defrosting the outdoor heat exchanger; a first end of the bypass shunt is connected with the pipeline between the compressor and the indoor heat exchanger; a second end of the bypass shunt is connected with the pipeline between the throttling device and the outdoor heat exchanger and a regulating valve used for regulating the refrigerant flow is arranged on the bypass shunt; the pipe line temperature sensing bulb is used for testing the pipe temperature of the outdoor heat exchanger; the air-out temperature sensing bulb is used for testing the air-out temperature of the inner blower; the controller is in electric connection with the regulating valve, the pipeline temperature sensing bulb and the air-out temperature sensing bulb respectively. The air-conditioner defrosting system and defrosting control method can reduce the failure rate of a reversing valve, simultaneously, avoid blowing cold wind to users and improve comfortableness.

The invention discloses a multi-split outdoor unit defrosting control system and method. The system comprises an imaging sensor arranged on the surface of a multi-split outdoor unit fin, the imaging sensor is connected with a defrosting controller through an imaging signal transmission line, and the defrosting controller is connected to a defrosting system through a defrosting control line. The imaging sensor is used for acquiring multi-split outdoor unit fin surface defrosting image information and transmitting the multi-split outdoor unit fin surface defrosting image information to the defrosting controller. Images are acquired by the imaging sensor, defrosting treatment can be performed once a preset threshold value is achieved, defrosting can be timely performed, defrosting effects aregood, building comfort is improved, and the system is economical, reliable, reasonable in running and convenient to mount. Automatic control is adopted, and expert management is omitted in cold weather.

The invention discloses an automatic defrosting control method for a frost free refrigerator. The method comprises a step of: intelligently judging a defrosting pointcut, namely testing evaporation temperature, refrigerating chamber temperature, environment temperature and real-time running state of the refrigerator, judging the attenuation degree of the heat exchange capacity of an evaporator ofthe refrigerator according to a set algorithm of the control method, and further judging the defrosting pointcut to automatically control the defrosting process. By the method, defrosting cut accuracy and exit timeliness are realized, the energy efficiency level and refreshing quality of the refrigerator are improved, and the intelligent control level of the refrigerator is improved.

The invention provides a defrosting control method and device for an air source heat pump system and an air conditioning system. The defrosting control method for the air source heat pump system comprises the steps that the environment temperature, the fin temperature, the fan running current and the duration time are selected to serve as parameter conditions for starting defrosting together; andthe fin temperature or defrosting operation time is selected to serve as a parameter condition for finishing defrosting. According to the defrosting control method of the air source heat pump system,defrosting of the air source heat pump system is accurate and timely.

The invention belongs to the technical field of air conditioning units, and aims at solving the problem that the defrosting judgment accuracy of an existing multi-split air conditioning unit is not high. The invention provides a defrosting control method for the multi-split air conditioning unit. The defrosting control method comprises the following steps: in the process of executing a heating mode by the multi-split air conditioning unit, acquiring the air pipe temperature and the liquid pipe temperature of an indoor unit; calculating the difference value between the air pipe temperature and the liquid pipe temperature of the indoor unit; judging whether the multi-split air conditioning unit meets the outdoor side preset defrosting condition or not; and selectively enabling the multi-split air conditioning unit to execute a defrosting mode according to the difference value and the judgment result of whether the multi-split air conditioning unit meets the outdoor side preset defrosting condition or not. According to the defrosting control method for the multi-split air conditioning unit, the false defrosting condition of the multi-split air conditioning unit can be avoided, the defrosting judgment accuracy is improved, the heating effect of the multi-split air conditioning unit can be truly reflected, defrosting is carried out in time when the heating effect is poor, and the influence on the use experience of a user is avoided.

The invention discloses a defrosting method and belongs to the technical field of air conditioners. The defrosting method comprises the steps that in the unsteady state heating process, the condensingpressure reducing rate index of the current time period is calculated, and whether the condensing pressure reducing rate index is smaller than a preset threshold value or not is judged, wherein the preset threshold value is the condensing pressure reducing rate index of a system achieved when a frost layer is accumulated to preset thickness; and if the condensing pressure reducing rate index is smaller than the preset threshold value, an air conditioner gets into a defrosting mode. The invention further discloses a defrosting device, the air conditioner and a storage medium. Whether the thickness of the frost layer on the surface of a condenser is accumulated to form the frost layer of the preset thickness or not is judged according to the condensing pressure reducing rate index, and thendefrosting is carried out in time.

The invention relates to the technical field of water heaters, in particular to an air-source water heater. The air-source water heater comprises a compression circulating pipeline and a defrosting device; the compression circulating pipeline comprises a compressor, a condenser, a throttling valve and an evaporator which are connected sequentially; an outlet of the evaporator is connected with aninlet of the compressor; the defrosting device is arranged on one side of the evaporator; and compressed air for blowing the surface of the evaporator to provide heat and power which are required during defrosting of the surface of the evaporator is stored inside the defrosting device. The invention further provides a defrosting method of the air-source water heater. Production of hot water by theaid of the air-source water heater is not hindered while defrosting is performed, the defrosting time is short, the efficiency is high, and the energy utilization rate is high.

The invention relates to the technical field of air conditioners and discloses an air conditioner comprising a condenser, wherein an outlet of the condenser is provided with a first defrosting sensor, and the middle of the condenser is provided with a second defrosting sensor. The invention also discloses a method for controlling the air conditioner to defrost, comprising the following steps of: when the temperature of the outlet of the condenser, detected by the first defrosting sensor, or the temperature in the middle of the condenser, detected by the second defrosting sensor, is lower thana first set temperature, starting the air conditioner to defrost. Two defrosting sensor are adopted to ensures that the air conditioner defrosts in time and prevent the occurrence of the condition that the air conditioner can not defrost due to too thick frost. In addition, the air conditioner can cleanly defrost can still ensure the defrosting effect under the condition of air shortage.

The invention provides a fixed frequency air conditioner defrosting control method and a computer storage medium. The fixed frequency air conditioner defrosting control method comprises the steps thatwhether a fixed frequency air conditioner meets preset defrosting conditions or not is judged; if yes, the rotating speed of an internal fan of the fixed frequency air conditioner is obtained, wherein the rotating speed of the internal fan can be a high speed, a medium speed and a low speed; the defrosting duration is determined according to the rotating speed of the internal fan; and a defrosting device of the fixed frequency air conditioner is controlled to perform defrosting according to the determined defrosting duration. By means of the scheme, since the frosting situation of a heat exchanger is closely linked to the rotating speed of the internal fan in the fixed frequency air conditioner heating operating process, the defrosting duration is determined according to the rotating speed of the internal fan when the fixed frequency air conditioner meets the preset defrosting conditions, it can be guaranteed that defrosting of the fixed frequency air conditioner is timely and thorough, and in addition, energy wasting is reduced.

The invention provides a defrosting control method of a refrigerator, comprising: counting the cumulative working time and the number of times of opening and closing of the refrigerator since the last initialization operation of the refrigerator, and obtaining the ambient temperature and humidity of the refrigerator; obtaining the preset defrosting time of the refrigerator Start conditions, defrost start conditions include: the number of door opening and closing times reaches the threshold of door opening and closing times, and the threshold of door opening and closing times is determined according to the cumulative working time, ambient humidity and ambient temperature; judging whether the refrigerator meets the defrosting start conditions, if the refrigerator meets the defrosting start conditions condition, generate a trigger signal to start defrosting. The defrosting control method of the present invention determines the door opening and closing times threshold according to the ambient humidity, ambient temperature, and cumulative working hours of the refrigerator, and can work according to the actual environmental conditions such as the ambient humidity and ambient temperature of the refrigerator, the cumulative working hours, and the number of times of door opening and closing. State and other parameters to accurately determine the starting point of defrosting, which can more accurately correspond to the actual situation to defrost in time.

The invention relates to a defrosting method and device of a refrigerator, control equipment, the refrigerator and a storage medium. The method comprises the steps that a current voltage signal output by piezoelectric equipment is obtained, and the current refrigeration duration of the refrigerator is detected; if the current voltage signal is smaller than or equal to the preset voltage value and the current refrigeration duration is longer than the preset single refrigeration duration, defrosting equipment of the refrigerator is started, the piezoelectric equipment is used for monitoring the thickness of a frost layer on an evaporator of the refrigerator and correspondingly outputting the voltage signal, the frosting condition on the evaporator is monitored in real time, whether the defrosting equipment is started or not is judged according to the frosting condition on the evaporator and the current refrigeration duration, a traditional timed defrosting mode is changed, it is guaranteed that defrosting can be conducted in time according to the frosting condition, the defrosting efficiency is improved, energy saving of the refrigerator is facilitated, the safety performance of the refrigerator is improved, and the service life of the refrigerator is prolonged.

The invention provides a defrosting control device and a defrosting control system of a refrigerator, and relates to the technical field of intelligent refrigerators. The defrosting control device comprises an evaporation probe, a refrigerator temperature probe and a temperature data processing controller of the refrigerator; the temperature data processing controller is respectively connected with the refrigerator temperature probe and the evaporation probe; the refrigerator temperature probe is used for detecting the refrigerator body stock temperature of the refrigerator and transmitting the refrigerator body stock temperature to the temperature data processing controller; the evaporation probe is used for detecting the evaporation temperature and transmitting the evaporation temperature to the temperature data processing controller; and the temperature data processing controller is used for controlling the refrigerator to exit the refrigeration working stage and enter the defrosting working stage when the condition that the temperature difference value obtained by subtracting the evaporation temperature from the refrigerator body stock temperature is larger than a preset SET value lasts for a first preset duration in the process that the refrigerator is in the refrigeration working stage. The technical problem that the defrosting control efficiency of the refrigerator is low is solved.

The invention provides an air conditioner and a defrosting control method thereof. During the defrosting operation of the air conditioner, the outdoor ambient wind speed is obtained, the outdoor coil temperature is detected, and the defrosting exit temperature corresponding to the wind speed grade to which the outdoor ambient wind speed belongs is obtained. When the outdoor coil temperature is higher than the defrost exit temperature corresponding to the wind speed level to which the outdoor ambient wind speed belongs, the air conditioner is controlled to exit the defrost; among them, different wind speed levels correspond to different defrost exit temperatures, and the wind speed level is negatively correlated with the defrost exit temperature . The present invention sets different defrosting exit temperatures according to the wind speed level, and the defrosting exit temperature can reflect the actual state of the current wind speed level when defrosting is completed, avoid the influence of ambient wind on the temperature of the outdoor coil, and ensure that the defrosting can exit in time when the defrosting is completed. Defrost to ensure indoor heating comfort.

The invention provides a method for controlling the defrosting of a refrigerator. The method comprises the following steps of: (A) detecting the environmental moisture and the environmental temperature of a refrigerator; (B) counting the opening frequency and the opening time of the refrigerator to obtain a cumulative opening frequency and a cumulative opening time; and (C) detecting the cumulative opening frequency and the cumulative opening time according to a specified time interval and defrosting the refrigerator when either the cumulative opening frequency or the cumulative opening time is larger than a preset specified value and the environmental moisture and the environmental temperature which are detected are under the specified conditions. Accordingly, a start defrosting point can be accurately confirmed according to practical environmental conditions, the operation conditions to the refrigerator, and the like so as to defrost in time to a certain degree and effectively reduce the power consumption.

The invention relates to a refrigerator monitoring device based on refrigerator door opening / closing states and humidity detection. The refrigerator monitoring device comprises a plurality of contact-type position sensors, a humidity sensor and a master controller, wherein each contact-type position sensor is positioned on the inner side of a corresponding refrigerator door, and is used for detecting the opening / closing state of the corresponding refrigerator door; the humidity detector is used for detecting the humidity in a refrigerator; the master controller is connected with the humidity detector and each contact-type position sensor, and is used for determining whether to start frost detection and automatic defrosting of the refrigerator according to the received humidity in the refrigerator and the opening / closing states of a plurality of refrigerator doors. Through the refrigerator monitoring device, the frost detection and the automatic defrosting of the refrigerator can be performed timely when the refrigerator doors are opened too long or the humidity in the refrigerator is overhigh, and the defrosting efficiency of the refrigerator is improved.

The invention discloses a defrosting control scheme for a low-temperature heating machine, which cannot solve the problem of not defrosting with frost or defrosting without frost, so that the unit cannot be defrosted in time and effectively or defrosted completely. The present invention is different from the existing traditional defrosting method. By detecting different parameter values ​​at different low ambient temperatures, it can be judged whether the unit needs to enter defrosting, so that it can timely judge the defrosting of the unit in time, and solve the problem of whether there is frost or not. The problem of defrosting or defrosting without frost The implementation of this case can improve the stability and heat transfer of the unit, reduce the frosting rate at low temperature and increase the defrosting rate.

The present invention provides an air conditioning system and a control method thereof, including an outdoor heat exchanger, the outdoor heat exchanger includes at least two heat exchange sections, at least one of the heat exchange sections has a direct or indirect connection with the indoor heat exchanger The heat exchange state and the defrosting state that are directly or indirectly connected to the exhaust port of the indoor heat exchanger and the compressor at the same time. In the air-conditioning system and its control method provided by the present invention, the outdoor heat exchanger is divided into a plurality of heat exchange sections to realize zone defrosting, and a small amount of heat is used to concentrate one heat exchange section for defrosting, and the defrosting time is not only shortened but also used The heating energy loss is small, the heat utilization rate becomes higher, and the defrosting is more timely. The heating capacity of the entire heating cycle has also been improved, and user comfort has been better optimized.

The invention discloses an air conditioner control method and device, a storage medium and an air conditioner. The method comprises the steps of determining a heat comfort state of an indoor environment of an air conditioner, and determining a frosting situation of an outdoor heat exchanger of the air conditioner; and according to the heat comfort state of the indoor environment and / or the frosting situation of the outdoor heat exchanger, determining a current operation mode of the air conditioner, and controlling the air conditioner to operate according to the current operation mode, whereinthe step of controlling the air conditioner to operate according to the current operation mode comprises: controlling the air conditioner to continuous operate at a heating mode, and controlling the air conditioner to reduce the output heat so as to operate, or controlling the air conditioner to operate at a defrosting mode, or controlling the air conditioner to stop or reduce frequency so as to operate. According to the scheme provided by the invention, the problem that since whether the air conditioner enters the defrosting mode or not is judged according to the temperature of the outdoor heat exchanger or a difference value between the temperature of the outdoor heat exchanger and the outdoor environment temperature, the heat comfort experience of a user is affected due to big indoor temperature drop during defrosting can be solved, and an effect on improving the heat comfort experience of the user during defrosting is achieved.