KR-20260063963-A - Media on which automatic defrosting systems and methods and computer programs are recorded

Abstract

According to one embodiment of the present invention, an automatic defrosting system is disclosed comprising: a heater capable of heating an evaporator to remove frost generated on the evaporator located in a cold storage warehouse; a defrosting sensor located in the evaporator to measure the temperature; an internal sensor located in the cold storage warehouse to measure the temperature; and a controller for controlling the on/off of the heater; wherein the controller receives the temperature measured by the defrosting sensor and the temperature measured by the internal sensor, and when the difference (DT) between the temperature measured by the defrosting sensor and the temperature measured by the internal sensor is greater than or equal to a reference value, the controller determines that there is at least one of a refrigerant shortage, a need for defrosting operation, and a fan failure, and if it determines that a need for defrosting operation, the controller turns on the heater to perform a defrosting operation. By doing so, power consumed due to unnecessary defrosting operations can be reduced.

Inventors

• 오진현

Assignees

• 주식회사 국제커머스그룹

Dates

Publication Date

20260507

Application Date

20241031

Claims (1)

1. A heater capable of heating the evaporator to remove frost generated on the evaporator located in a cold storage warehouse; A defrost sensor located in the above-mentioned evaporator to measure temperature; An internal sensor located in the above-mentioned cold storage to measure the temperature; and A controller for controlling the on/off of the above heater; is included, The above controller receives the temperature measured by the above defrost sensor and the temperature measured by the above internal sensor, and if the difference (DT) between the temperature measured by the above defrost sensor and the temperature measured by the above internal sensor is greater than or equal to a reference value, it determines that there is at least one of a refrigerant shortage, a need for defrosting operation, and a fan failure, and if it determines that a need for defrosting operation, it turns on the above heater to perform a defrosting operation, characterized by an automatic defrosting system.

Description

Media on which automatic defrosting systems and methods and computer programs are recorded The present invention relates to an automatic defrosting system, a method, and a medium on which a computer program is recorded. In cold storage/refrigerated warehouses, cold storage racks, refrigerated showcases, etc. (hereinafter collectively referred to as 'cold storage') used to store food or processed products, defrosting operations to remove frost are essential to increase freezing efficiency. Conventional defrosting operations are mostly carried out using a method called 'periodic time defrosting,' which removes frost by heating an internal heater (electric rod...) at predetermined intervals (e.g., 4 to 6 hours) while taking into account the surrounding humidity and temperature conditions. However, periodic timed defrosting causes frequent temperature fluctuations in freezers or cold storage, which may result in damage to food or products near heaters; additionally, since it requires repeating the process of raising the temperature (above 30 degrees) and then lowering it again during defrosting, Heat loss and electricity consumption increase at temperatures below -20 degrees Celsius (in the case of cold storage). FIG. 1 illustrates a defrosting operation based on the results of conventional periodic time defrosting. Referring to FIG. 1, defrosting is performed every 6 hours. It can be seen that in such cases, frequent defrosting operations damage products stored in the cold storage, increase the operating time of the solenoid valve for refrigeration, and consume a lot of electricity. Figure 1 is a diagram illustrating conventional defrosting technology. FIG. 2 is a drawing for explaining an automatic defrosting system according to an embodiment of the present invention. FIG. 3 is a drawing illustrating an automatic defrosting method according to an embodiment of the present invention. FIG. 4 is a drawing illustrating an automatic defrosting method according to another embodiment of the present invention. FIG. 5 is a drawing for explaining the effects according to embodiments of the present invention. FIG. 6 is a diagram illustrating the difference between the defrosting temperature and the internal temperature according to one embodiment of the present invention. The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments associated with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete and to ensure that the spirit of the invention is sufficiently conveyed to those skilled in the art. In this specification, when a component is mentioned as being on another component, it means that it may be formed directly on the other component or that a third component may be interposed between them. Furthermore, the terms used in this specification are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used in this specification, 'comprises' and/or 'comprising' do not exclude the presence or addition of one or more other components to the mentioned components. The present invention will be described in detail below with reference to the drawings. In describing the specific embodiments below, various specific details have been included to explain the invention more specifically and to aid in understanding. However, a reader with sufficient knowledge in the art to understand the invention will recognize that it can be used without these various specific details. In some cases, it is noted in advance that commonly known parts that are not significantly related to the invention have been omitted to prevent unnecessary confusion in describing the invention. FIG. 2 is a drawing for explaining an automatic defrosting system according to an embodiment of the present invention. Referring to FIG. 2, an automatic defrosting system according to one embodiment of the present invention may include a heater (11) capable of heating an evaporator (1) to remove frost generated on an evaporator (1) located in a cold storage warehouse (10), a defrosting sensor (13) located in the evaporator (1) to measure the temperature, an internal sensor (15) located in the cold storage warehouse (10) to measure the temperature, and a controller (17) for controlling the on/off of the heater (11). For reference, for the purpose of explaining the present invention, a condenser (3), a compressor (5), an expansion valve (7), an electronic valve (9), and a blower fan (19) are additionally illustrated. The compressor (5) receives the gaseous refrigerant flowing out through the evaporator (1), compresses it, and converts i