A refrigerator and/or freezer unit and system for storing, monitoring, and maintaining a supply of temperature sensitive pharmaceutical products in compliance with regulatory requirements. The unit contains compartments for each product type in multiple controlled temperature zones with sensors to track product status and content. In a system, each unit communicates with an application service provider to provide remote inventory management capability.

A refrigeration system includes: a leak sensor disposed within a building and configured to measure an amount of refrigerant that has leaked from the refrigeration system within the building; an estimation module configured to determine an estimated amount of refrigerant that has leaked from the refrigeration system within the building based on the measured amount; and a leak module configured to: determine whether a leak is present in the refrigeration system within the building based on the estimated amount of refrigerant that has leaked from the refrigeration system; and take one or more remedial actions when a leak is present in the refrigeration system within the building.

A cryogenic freezer features a dewar defining a storage space. A reservoir is positioned within or adjacent to the storage space and is configured to contain a cryogenic liquid with a headspace above the cryogenic liquid in a reservoir interior space that is sealed with respect to the storage space. A refrigeration module is in heat exchange relationship with the reservoir. A sensor is configured to determine a temperature or pressure within the reservoir. A system controller is connected to the sensor and the refrigeration module and configured so that the refrigeration module is adjusted to provide additional cooling to the reservoir when a pressure or temperature within the headspace increases.

A system generates alerts based on sensor data obtained from equipment, for example, refrigeration equipment. Examples of equipment instances include refrigeration equipment, heating equipment, air conditioning equipment, and so on. The system accesses a model, for example, a machine learning model trained to predict an alert threshold for generation of alerts. The system modifies the alert threshold value for an equipment instance based on the output of the machine learning model. The system uses the modified alert threshold value for generating alerts. The system may track the number of times the alert threshold was adjusted. If the number of times the alert threshold value is modified exceeds a predetermined fault threshold value, the system determines that the equipment is faulty.

A method for verifying an alarm condition in an environmental sensing system includes monitoring data received from environmental sensors; detecting anomalous data received from one of the plurality of environmental sensors; determining the context in which the anomalous data was acquired is consistent with typical usage activities; and providing an alarm condition alert when the determined context is not consistent with typical activities. A system for intelligently monitoring environmental conditions includes environmental sensors configured to monitor first and second environmental conditions and to communicate with an intelligent analysis module. The intelligent analysis module is configured with logic to determine whether anomalous data has been collected by the environmental sensors, to determine the context in which the anomalous data was collected, to determine whether the anomalous data can be attributed to a routine activity, and to provide an alarm condition if the anomalous data cannot be attributed to a routine activity.

The present disclosure provides a usage notification device that adds, to a refrigerator not provided with a communication function, the function of notifying a communication terminal of usage. The usage notification device includes an attachment portion, a wireless communication unit, a door open/closed recognition unit, and a notification control unit. The attachment portion attaches the usage notification device to an exterior of the refrigerator. The wireless communication unit performs a wireless communication with the communication terminal. The door open/closed recognition unit recognizes the open or closed state of the refrigerator. The notification control unit transmits the usage information on the refrigerator based on the door open or closed state of the refrigerator, to the communication terminal via the wireless communication unit.

In an ice maker, a controller is operatively connected to the ice maker's water system to determine a parameter indicative of a total amount of water filtered by a replaceable filter cartridge. Based on the determined parameter, the controller can provide a numerical indication of the total amount of water filtered by the replaceable filter cartridge. Based on the determined parameter, the controller can determine that the replaceable filter cartridge requires replacement. The parameter can be determined based on the amount of time a water inlet valve is opened and/or a water pressure signal. The controller can take action when it determines that the water filter needs replacement, for example, by making a local alarm indication, pushing a remote notification, or making an automated purchase transaction for a new filter cartridge.

A method for determining a time frame for when a freezer having a compressor should be defrosted include the steps of measuring compressor cycling over time, determining a change in compressor cycling over time, and determining from the change in in compressor cycling over time determined a time frame for when the freezer should be defrosted.

A refrigerator is configured to enable a user to open doors of the refrigerator easily. The refrigerator performs a method for controlling the doors to prevent from opening due to a malfunction.

An ice machine, a fault handling method and fault handling apparatus of the ice machine, and a refrigeration device. The ice machine includes an ice machine body, an ice making tray located in the ice machine body, a heating assembly, and an ice stirring assembly for stirring out ice made in the ice making tray. A fault of an ice stirring assembly is automatically removed by means of a heating treatment mode of gradually raising a heating temperature multiple times, the method and apparatus moving simply and quickly, wherein the satisfaction degree of users is improved.