83 results about "Frozen temperature" patented technology

The invention discloses a pepper freezing temperature gradient dynamic adjusting method and system, particularly relates to the technical field of industrial freezing temperature control, and is used for solving the problem of temperature gradient misalignment caused by the fact that a static model does not sense dynamic changes of material thermodynamic parameters in real time in an existing freezing control method. Temperature distribution and gas flow rate data in the freezing process are collected in real time, a high-confidence-coefficient data subset of a low-flow-rate area is screened based on spatial correlation, the dynamic heat conduction coefficient of the material is identified online through a recursive algorithm, and the dynamic heat conduction coefficient of the material is identified through a double-threshold-value judgment mechanism of the energy release rate and the phase lag angle. Performing segmentation fitting to generate a stable parameter sequence; further dynamically adjusting a preset temperature gradient model through a nonlinear correction strategy to generate a self-adaptive gradient control curve, and finally driving heat exchange rate adjustment to realize closed-loop tracking of the actual temperature gradient on a target curve; the freezing uniformity and energy efficiency of the high-moisture material are remarkably improved, and the control precision caused by thermal response mismatch is improved.

The invention provides a refrigerator and an unfreezing method for food materials stored in the refrigerator. The refrigerator comprises a refrigerating chamber, an unfreezing chamber and an evaporation cabin, and an evaporator and a fan are arranged in the evaporation cabin; the controller is connected with the humidity sensor, the temperature sensor, the first air door, the second air door, the evaporator and the fan. The unfreezing chamber is arranged in the refrigerating chamber of the refrigerator, food materials to be unfrozen are unfrozen to the temperature at which the food materials are slightly frozen and easy to cut by utilizing high-humidity gas in the evaporation cabin, and then the temperature in the unfreezing chamber is controlled within the constant range at which the food materials are slightly frozen and easy to cut. By controlling the opening or closing of the first air door and the fan, the effect of conveying the high-humidity gas to the thawing chamber can be realized, so that the problems of long thawing time and non-uniform thawing caused by incapability of accurately capturing the surface temperature of the stored food materials in the thawing process of the stored food materials are solved.

The invention discloses a novel preparation technology of low-temperature fresh-keeping cold-quenched tea, and relates to the field of cold-quenched tea preparation, and the novel preparation technology comprises the following steps: S1, fresh leaves are picked and then are directly subjected to low-temperature freezing treatment, the freezing temperature is-25 DEG C to-15 DEG C, and the freezing time is 20-40 minutes; s2, unfreezing and withering the frozen fresh leaves; s3, performing rocking treatment on the unfrozen and withered tea leaves; s4, rolling the rocked green leaves by adopting a gradient pressure method; s5, carrying out segmented fermentation treatment under temperature and humidity control conditions; s6, after fermentation is completed, performing low-temperature freezing on the tea leaves again; according to the novel preparation process of the low-temperature fresh-keeping cold-quenched tea, the ice crystal form is cooperatively regulated and controlled through staged freezing treatment, cell structure damage is reduced, dynamic rocking and gradient rolling processes are combined, the inclusion release path is accurately controlled, tea polyphenol, theaflavin and flower and fruit aroma components are effectively reserved, and the low-temperature fresh-keeping cold-quenched tea is prepared. And component loss caused by temperature fluctuation or single mechanical force in the traditional process is avoided.

The invention relates to the technical field of food component analysis and testing, in particular to a fruit pectin sampling and testing method which comprises the following steps: step 1, directionally freezing and crushing, and calculating a target freezing temperature according to a tissue freezing point temperature and cell structure characteristics of a to-be-tested fruit; step 2, gradient centrifugal separation: mixing the crushed particles with a low-temperature protection buffer solution, and maintaining the temperature to be lower than the critical gelation temperature; executing three-stage centrifugation; parameters of each stage are corrected in real time according to physical characteristics of a preorder isolate; 3, dynamic turbidity detection: mixing a pure pectin component with a reaction solution containing a chelating agent and positive ions; calculating the pectin content according to the geometrical characteristic parameters of the characteristic inflection points, and calibrating a calculation model through a standard atlas database. The method can effectively solve the problems of tissue damage and impurity interference in berry fruits and seed-containing fruits, ensures the accuracy and reliability of pectin detection, and has important technical advantages and application prospects.

The invention provides a temperature setting method and device of a vehicle-mounted refrigerator and the vehicle-mounted refrigerator, and relates to the technical field of vehicle-mounted refrigerators. Article information which is acquired by an article category acquisition module and is used for representing article categories can be received; according to the article information, article types of articles in the vehicle-mounted refrigerator are determined; under the condition that it is determined that the articles of the article categories are placed in the vehicle-mounted refrigerator, the current environment temperature collected by an environment temperature sensor is received, and historical first temperature setting samples corresponding to the articles of the article categories associated with other vehicle users are obtained from a cloud server; inputting the current environment temperature and historical first temperature setting samples corresponding to articles of a plurality of article categories associated with other vehicle users into a pre-trained freezing temperature determination model, and determining a recommended freezing temperature of the vehicle-mounted refrigerator; the working temperature of the vehicle-mounted refrigerator is controlled to be the recommended freezing temperature, the working temperature of the vehicle-mounted refrigerator can be automatically set, manual operation is not needed, and the experience feeling of a user is improved.

To provide a producing method and producing system for meal bread using frozen bread dough enabling freezing storage of meal bread and further being effective for the composition of bread dough not using chemical compounds.SOLUTION: A producing method for meal bread using frozen bread dough comprises, after a fermentation step, a diving step for dividing bread dough into predetermined weights, a first rapid cooling step for rapidly cooling the divided bread dough for a specified period of time, a thawing step for thawing the divided bread dough so that the temperature at the center of the divided bread dough becomes any temperature between 8°C and 10°C, a molding step for molding the thawed divided bread dough to obtain mold bread dough, a second rapid cooling step for rapidly cooling the mold bread dough for a specified period of time, a first storage step for storing the rapidly cooled mold bread dough at freezing temperature for a specified period, a second storage step for storing the frozen stored mold bread dough for a predetermined period, a multi-stage final proofing step for setting at least three stages of temperatures and periods after the second storage step to perform final proofing, and a baking step for baking the bread dough after the final proofing.SELECTED DRAWING: Figure 1A

The invention relates to a freeze concentration production method and device, and belongs to the technical field of freeze concentration. The method comprises the following steps: feeding a raw material (dilute solution) into a freezing and dissolving device A, setting a freezing temperature, freezing to achieve solid-liquid balance, and separating to obtain a high-concentration solution A; and heating and dissolving the separated ice body in the device to obtain solutions (A1, A2, ice with solute content of less than 1%) with different concentrations. The low-concentration solution (A2) is frozen and concentrated again according to the method, so that the concentration of the solution is improved. The high-concentration solution (A1) can be frozen and concentrated again by using the process method to improve the concentration of the solution, or solutions with different target concentrations can be obtained by mixing according to needs.

The invention discloses a temperature control system of an immersion type freezing device and relates to the technical field of immersion type freezing temperature control. Temperature control in the dipping and freezing process is achieved, it is ensured that large ice crystals are reduced in the food freezing process, damage to the interior of food is reduced, and meanwhile energy consumption and cost are reduced. The system comprises a temperature acquisition module, a liquid pump driving module, an upper computer, a data transmission module, a control module and a refrigeration equipment control module, the upper computer performs data interaction with the control module through the data transmission module; the temperature acquisition module acquires the temperature of the frozen object and the external environment, converts the acquired temperature signal into an electric signal and sends the electric signal to the control module; the control module controls the power of the liquid pump driving module through a cascade control strategy and a PID (Proportion Integration Differentiation) control algorithm according to the temperature signal of the frozen object and the influence value of the external environment on the freezing liquid; and starting and stopping of the refrigeration equipment control module are controlled according to the real-time temperature of the frozen object. The method is suitable for the field of dipping type freezing temperature control.

The invention relates to the technical field of refrigerators, in particular to a dual-system refrigerating belt variable-temperature refrigerator. Comprising a refrigerator body, the top of the front side of the refrigerator body is movably connected with a first refrigerator door through hinges, and the bottom of the front side of the refrigerator body is movably connected with a second refrigerator door through hinges. According to the dual-system refrigeration refrigerator with the variable temperature function, through cooperative use of the variable temperature drawer and the variable temperature assembly, the variable temperature chamber is additionally arranged in the refrigerating chamber in the refrigerator body, the requirement of a customer for storing real objects in multiple temperature areas is met, and food is not tainted by odor in the storage process; a user can freely adjust the temperature in the variable-temperature drawer according to actual needs, for example, when refrigerated food needs to be placed, the interior of the variable-temperature drawer is set to be at the refrigeration temperature, and when frozen food needs to be placed, the interior of the variable-temperature drawer is set to be at the freezing temperature, so that the storage requirements of different kinds of food can be met, and space waste can be avoided; the space utilization efficiency of the refrigerator body is improved.

Provided are: a first storage compartment of a freezing temperature zone; a second storage compartment of a temperature zone higher than the freezing temperature zone; a cooler (72) that has a cooling capacity that differs depending on the position and cools the surrounding air; a cooler compartment (7) that houses the cooler; a supply fan (71) disposed in the cooler compartment; a partition wall (6) that separates at least one of the first storage compartment and the second storage compartment from the front and back of the cooler compartment (7); a first air passage that transports air from the cooler compartment (7) to the first storage compartment; a second air passage that transports air from the cooler compartment (7) to the second storage compartment; a third air passage that returns air from the first storage compartment to the cooler compartment; and a fourth air passage (61D) that returns air from the second storage compartment to the cooler compartment, the third air passage having an air passage formed in the partition wall (6) that extends in the up-and-down direction in at least a portion, and the cooling capacity of the cooler to a second region lower than a first region supplies air drawn from the first storage compartment.

The application relates to an immersion refrigeration temperature control system, and relates to the technical field of immersion refrigeration temperature control. The system realizes temperature control during the immersion refrigeration process, reduces the formation of large ice crystals in the refrigeration process, reduces the damage to the inside of food, reduces energy consumption and reduces costs. The system comprises a temperature acquisition module, a liquid pump driving module, an upper computer, a data transmission module, a control module and a refrigeration equipment control module; the upper computer and the control module realize data interaction through the data transmission module; the temperature acquisition module collects the temperature of a refrigeration object and an external environment, converts the collected temperature signals into electric signals and sends the electric signals to the control module; the control module controls the power of the liquid pump driving module according to the temperature signals of the refrigeration object and the influence value of the external environment on the refrigeration liquid through a cascade control strategy and a PID control algorithm; and the control module also controls the start and stop of the refrigeration equipment control module according to the real-time temperature of the refrigeration object. The application is suitable for the field of immersion refrigeration temperature control.

The invention provides a vacuum freezing method and system based on a surface phase change self-cooling effect. The method comprises the following steps: constructing an initial sacrificial ice layer on the surface of a material; the pressure of the space where the materials are located is controlled to range from 0.01 Pa to 300 Pa and meets Plt; psat (T ice surface (t)), sublimating the sacrificial ice layer so as to absorb heat and cool the material; the existence of a sacrificial ice layer is maintained by dynamically spraying a liquid-phase medium on the surface of the material; and continuously reducing the temperature of the material through continuous sublimation of the sacrificial ice layer, and stopping the freezing process until the center temperature of the material is less than or equal to the target freezing temperature. The phase change latent heat of sublimation of the sacrificial ice layer is utilized to reduce the core temperature of the material to a target value, the dependence on an external cold source is gotten rid of breakthrough, and material damage and energy consumption are remarkably reduced.

The utility model relates to the technical field of freezing processing, in particular to blade or steel strip continuous ultralow-temperature freezing equipment which comprises a freezing cavity, a cold source is arranged in the freezing cavity, an exhaust port and a liquid outlet are formed in the freezing cavity, a feeding hole and a discharging hole are formed in the feeding position and the discharging position of the freezing cavity, a cover plate is connected to the top end of the freezing cavity in a sealed mode, and a freezing track is arranged in the freezing cavity. A cold guide plate is arranged above the freezing track, the two ends of the freezing track are connected with a feeding hole and a discharging hole respectively, and a purging device is arranged on the feeding hole or the discharging hole and used for purging the surface of a product located at the feeding hole or the discharging hole; the freezing track can provide supporting and guiding for products, the products enter from the feeding hole in one side of the box body and reach the discharging hole through the freezing track, it can be guaranteed that the freezing temperature of the products is uniform in the section of the freezing track, and the blowing device is arranged so that frost generated when the products make contact with outside air after being frozen can be removed; and the feeding hole or the discharging hole cannot be frosted under long-time low-temperature work.

The invention discloses a chitosan aerogel preparation method based on directional freezing mold design and freezing temperature regulation, designs a directional freezing device and a directional freezing mold of aerogel, and prepares chitosan aerogel at different freezing temperatures (a refrigerator:-15 DEG C, a freeze dryer:-45 DEG C, dry ice / ethanol:-78 DEG C, and liquid nitrogen:-196 DEG C). The directional freezing device designed by the invention consists of a container for containing refrigerants (dry ice / ethanol and liquid nitrogen) with different temperatures, a heat-conducting brass plate, a directional freezing mold and a temperature display capable of monitoring the temperature in real time, wherein the directional freezing mold is made of polytetrafluoroethylene and brass. Proved by comparison and embodiments, by adopting the directional freezing device disclosed by the invention, the pre-freezing temperature is regulated and controlled, and the chitosan aerogel with lower density, low thermal conductivity, high porosity and excellent mechanical properties is prepared.

The invention provides a dual-system refrigerator, a refrigerating chamber moisturizing control method and device and a storage medium, and the refrigerating chamber moisturizing control method is used for the dual-system refrigerator. Comprising the steps that the refrigerating temperature of a refrigerating chamber and the freezing temperature of a freezing chamber are obtained; and when the refrigerating temperature and the freezing temperature are both lower than a first preset temperature, the dual-system refrigerator is controlled to enter a refrigerating chamber moisturizing mode to operate. The invention aims to solve the problems that in the prior art, when a dual-system refrigerator enters a refrigerating chamber moisturizing mode to operate, the temperature of a freezing chamber is not considered, so that the freezing chamber is prone to being in a long-time temperature pulling process, and the moisturizing effect of the refrigerating chamber and the food preservation effect are affected.

This method for producing a frozen dessert has a freezing step in which a raw material liquid containing live bifidobacteria is frozen to obtain a partially frozen product. In order to suppress death of bifidobacteria, the freezing temperature in the freezing step is set to be lower than or equal to the freezing point of the raw material liquid, and the absolute value of the difference between the freezing point of the raw material liquid and the freezing temperature is set to be less than or equal to 2.0°C.

The utility model relates to the technical field of instant freezers, and discloses an instant freezer intelligent alarm system which comprises an instant freezing module, an instant freezing channel is formed in the instant freezing module, and a conveying frame is fixedly connected to the interior of the instant freezing channel. According to the intelligent alarm system of the instant freezer, the tension sensor, the displacement sensor and the speed sensor are arranged on the instant freezer, the tension force, the operation position and the operation speed of the net belt can be monitored, continuous and normal operation of the instant freezer is guaranteed, the freezing temperature of the instant freezer can be monitored by arranging the temperature sensor on the instant freezer, and the alarm effect is improved. By arranging a flash alarm and a sound alarm, warning can be conducted when the instant freezer breaks down, workers can be reminded of handling in time, and the problems that in the operation process of the instant freezer, normal operation of the instant freezer is affected by the tensioning force, the speed and the position of a mesh belt, and the product quality is affected are solved. And the freezing temperature of the instant freezer can influence the freezing quality.

1. Name of the product of this design: Electronic device with a graphical user interface for controlling a freezer. 2. Purpose of the product of this design: an electronic device used in freezers and refrigerators. 3. The design highlights of this design product are: the human-computer interactive graphical user interface for operating the screen functions of electronic equipment. 4. The picture or photo that best illustrates the key points of the design: Main view of Design 1. 5. There are no design points, and the left, right, top and bottom views are omitted. 6. Designate Design 1 as the base design. 7. Purpose of the graphical user interface: Design 1 The main view of the homepage interface is for the user to execute the freezer (refrigerator) and need to adjust the freezer mode. The main view of the homepage interface will appear. The user can touch the switch button in the main view interface to unlock the interface. At the same time, the interface enters an operational state, and there is a 5G wireless cellular network signal display icon at the top of the interface; the upper part of the interface contains working indicators for defrosting, fan, temperature, and pressure, which automatically light up according to the function of the equipment and during use. The left part of the interface is equipped with touchable setting, increase, and decrease operation buttons; the middle part of the interface is the temperature display area, including the refrigeration temperature display and the freezing temperature display. The current temperature is displayed in real time during use. You can also increase and decrease functions on the left side of the interface as needed; the right part of the interface is the touch-screen sterilization, energy saving, and negative oxygen function buttons. After the button is touched and selected, it will be displayed as a green icon; the lower part of the interface It can display the accumulated energy consumption, energy-saving energy consumption and date; when the sterilization function is touched on the main view interface, the fan is running at the same time, the fan working indicator light is displayed on the top of the interface, and the accumulated energy-saving energy consumption is displayed below the interface as shown in the changing state diagram 1; in the sterilization function, after the freezer and refrigerator fans have been used for a period of time, the pressure display light on the top of the interface lights up as shown in the changing state diagram 2; at the same time, the energy-saving function is turned on, the pressure is restored, and the upper pressure display light disappears as shown in the changing state diagram 3; at the same time, the negative oxygen function is turned on as shown in the state diagram 4; after the sterilization, energy-saving and negative oxygen functions are all turned off, the refrigeration and freezing temperatures are increased, the defrost function is automatically turned on, the defrost display light on the top of the interface lights up, and the date is displayed below the interface as shown in the changing state diagram 5; then the equipment resumes normal operation, the temperature drops, the defrost function is automatically turned off, the defrost display light on the top of the interface disappears, and the fan and temperature icons light up as shown in the changing state diagram 6. The only difference between Design 2 and Design 1 is that the middle area of ​​the main view only displays the refrigeration function and its current real-time temperature compared to Design 1. Other operating functions, display areas and human-computer interaction operations are the same.

The invention discloses a refrigerator control method and a refrigerator. The refrigerator control method comprises the steps that the actual refrigerating temperature Tc of a refrigerating chamber and the actual freezing temperature Td of a freezing chamber are detected; comparing the actual refrigeration temperature Tc with the set refrigeration temperature Tc, and comparing the actual freezing temperature Td with the set freezing temperature Td; when Tc set-Tc is larger than 0 and Td set-Td is smaller than 0, the draught fan of the evaporator cavity continues to operate and only supplies air to the freezing chamber, the compressor continues to operate, and the rotating speed of the compressor is controlled according to the freezing temperature difference value of Td set-Td; and / or when Tc is set to-Tc < 0 and Td is set to-Td > 0, the compressor stops running, and the fan of the evaporator cavity continues to run to supply air to the refrigerating chamber and the freezing chamber. In the refrigerating process of the storage chamber, different control logics are formulated according to the actual temperature in the chamber, so that the purposes of saving energy and improving the food storage quality are achieved.

To provide a refrigerator that can keep the degree of freshness even after food in a freezing temperature zone is thawed.SOLUTION: A refrigerator comprises a low-temperature chamber capable of being set to a plurality of temperature zone modes. The low-temperature chamber can be set to a partial freezing mode for cooling to a partial freezing temperature, and a thawing mode for cooling to a thawing temperature. When a load frozen to a freezing temperature is housed in the low-temperature chamber, and it is set to the thawing mode, it is operated in the thawing mode for a predetermined time, and operated in the partial freezing mode after the predetermined time elapses.SELECTED DRAWING: Figure 3

The embodiment of the invention provides a refrigerator, a control method and device of the refrigerator and a computer readable storage medium, the refrigerator is provided with a compressor, a freezing chamber and a defrosting sensor located in the freezing chamber, and the refrigerator control method comprises the steps that in response to the fact that the refrigerator is powered on, whether the temperature measured by the defrosting sensor is smaller than the preset freezing temperature or not is determined; in response to the fact that the temperature measured by the defrosting sensor is smaller than the preset freezing temperature, the compressor is controlled to be started in a delayed mode; and in response to the fact that the temperature measured by the defrosting sensor is larger than or equal to the preset freezing temperature, the compressor is controlled to be started in real time.

This present disclosure describes an apparatus and a method for measuring degradation kinetics of a biomaterial in aqueous solution below the normal freezing temperature. Further includes new systems comprising high-pressure containers with nucleating-locks, a temperature-control holder for the high-pressure containers, a holder for the nucleating-locks and an insulated low-temperature gradient chamber. A method is described comprising several steps such as filling of the high-pressure container with the biomaterial solution to be slightly below freezing temperature, closing of the container with a nucleating-lock, which is below freezing temperature, allowing the container to reach the reaction temperature, removing the container at selected time and bringing it to above freezing temperature and opening the container to recover the biomaterial solution.

The invention discloses a production technology of a high-fiber bean product and a preparation method of a high-fiber slurry-coated bean curd prefabricated dish, and relates to the technical field of food production. The production technology comprises the following steps: performing soaking, pulping and pulp-residue separation treatment on peeled soybeans in sequence to respectively obtain soybean milk and soybean residues; acquiring real-time water content and real-time temperature of the bean dregs, and performing monomer freezing treatment on the bean dregs to obtain frozen bean dregs; performing micro differentiation on the frozen bean dregs to obtain bean dreg dietary fibers, and backfilling the bean dreg dietary fibers into the soybean milk to prepare a high-fiber bean product; the freezing rate of the bean dregs from the initial temperature to the critical freezing temperature is smaller than the freezing rate of the bean dregs from the critical freezing temperature to the freezing point temperature, and the freezing rate of the bean dregs from the critical freezing temperature to the freezing point temperature is larger than the freezing rate of the bean dregs from the freezing point temperature to the target freezing temperature. According to the production technology of the high-fiber bean product, the freezing rate of monomer freezing treatment can be adjusted in real time to prevent large ice crystals from being formed in bean dregs.

Embodiments of the present application relate to a temperature control method and device, electronic equipment and storage medium. The method comprises: obtaining a current time; determining whether the current time belongs to a preset time range, wherein the opening frequency of the soft freezing chamber is less than or equal to a preset number threshold in the preset time range; in the case where the current time belongs to the preset time range, controlling the indoor temperature of the soft freezing chamber to decrease to a target temperature range, wherein the highest temperature included in the target temperature range is lower than the lowest temperature of the soft freezing temperature range. Thus, the shelf life of the food stored in the soft freezing chamber can be improved.

The invention provides a functional cheese sauce. The functional cheese sauce may be combined with various stuffing ingredients to form a self-supporting stuffing composition, which may be pressed or shaped such that it is self-supporting at a refrigerated or frozen temperature. The stuffing composition maintains its shape and is suitable for use in automated high throughput processing of food products such as roll-like food or Mexican rolls. Upon heating the stuffing composition, the self-supporting properties of the functional cheese sauce may disappear, such that the stuffing composition breaks down into a food product having desired organoleptic properties. Compositions of the functional cheese sauce, stuffing compositions, rolled food products, and methods of making are described.

The present invention relates to a refrigerator comprising: a cabinet; a first switchable chamber which is provided at one side of the cabinet, and which can be switched to freezing temperature or refrigeration temperature; a second switchable chamber which is provided at the other side of the cabinet, and which can be switched to refrigeration temperature or room temperature; an evaporator which is provided in the cabinet, and which produces cold air; and a first grill pan assembly disposed at the rear of the first switchable chamber, wherein the first grill pan assembly includes: a first grill pan; a shroud which is disposed at the rear of the first grill pan, and which includes a first flow path part for supplying the cold air to the first switchable chamber and a second flow path part that is formed on the opposite side of the first flow path part and that supplies the cold air to the second switchable chamber; a shroud cover disposed at the rear of the shroud; a first fan which is provided in the first flow path part, and which causes the cold air of the evaporator to flow in the first flow path part; a second fan which is provided in the second flow path part, and which causes the cold air of the evaporator to flow in the second flow path part; and a damper which is provided in the second flow path part, and which causes the cold air moved by the second fan to selectively flow to the second switchable chamber, and the shroud cover covers the second fan and the damper at the rear thereof.

A load handling device is provided for use in a frozen temperature environment. The load handling device comprises a driving mechanism operatively arranged to move the load handling device, and an enclosure to house a rechargeable power source to power the driving mechanism. The enclosure comprises a structure arranged to substantially fully enclose the power source. The structure comprises aerogel insulation. The enclosure comprises one or more load-bearing support elements configured to support the weight of the rechargeable power source and the aerogel insulation is not load-bearing. An enclosure is provided for a load handling device as defined herein. A storage and retrieval system is provided, comprising a grid framework structure. The grid framework structure comprises a track system comprising a plurality of tracks arranged in a grid pattern, a supporting framework structure supporting the track system, and a plurality of stacks of storage containers arranged in a plurality of storage columns located below the track system. The storage and retrieval system comprises at least one load handling device as defined herein.

The invention relates to the technical field of intelligent household appliances, and discloses a method for controlling a refrigerator, which comprises the following steps: obtaining the working state of a refrigeration air door; wherein the working state comprises a fault state; under the condition that the working state of the refrigeration air door is the fault state, the refrigeration temperature of a refrigeration chamber is obtained, and starting and stopping of a compressor are controlled according to the refrigeration temperature; the start-stop period of a compressor is determined, and the freezing temperature of a freezing chamber in the start-stop period and the current duty ratio of a freezing fan are obtained; and the duty ratio of the freezing fan is controlled according to the freezing temperature in the starting and stopping period and the current duty ratio of the freezing fan. According to the method, under the condition that the refrigeration air door cannot be reset, the temperature requirement of the freezing chamber is guaranteed while excessive refrigeration of the refrigeration chamber is avoided, the refrigeration effect of the refrigerator is improved, and the user experience feeling is improved. The invention further discloses a device for controlling the refrigerator and the refrigerator.

The invention provides a control method and device of a refrigerating system, a refrigerator and a storage medium. In the refrigerating system, a compressor, a condenser and a liquid separator communicate in sequence; the refrigeration evaporator is communicated with the liquid separator through a first pipe interface, the freezing evaporator is communicated with the liquid separator through a second pipe interface, and the first pipe interface is lower than the second pipe interface, so that a height difference exists between the first pipe interface and the second pipe interface, and the height difference is configured to be adjustable; the control method comprises the steps that when a compressor is shut down and runs, the first real-time refrigeration temperature of a refrigeration chamber is obtained; when the first real-time refrigeration temperature reaches the starting point temperature, a compressor is controlled to be started; the freezing temperature of the freezing chamber and the second real-time refrigeration temperature of the refrigeration chamber are obtained; if the freezing temperature is larger than the first preset temperature, the height difference is adjusted to be reduced; if the freezing temperature is smaller than the second preset temperature, the height difference is adjusted to be increased; the first preset temperature is higher than the second preset temperature; and when the second real-time refrigeration temperature reaches the refrigeration shutdown point temperature, the compressor is controlled to be shut down.