Control method and control system for natural air return defrosting in refrigeration
A technology of returning to weathering and defrosting and a control method, which is applied in the control system of refrigerated natural returning to weathering and defrosting, and in the field of cold storage and natural returning to weathering and defrosting control
Active Publication Date: 2017-08-18
HEFEI HUALING CO LTD +2
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Problems solved by technology
[0004] The purpose of the present invention is to provide a large-screen refrigerator with a door body air duct structure and a large-screen refrigerator to solve the cooling problem of the CPU
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[0044] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.
[0045]In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
[0046] In order to solve the problem of poor defrosting effect in the prior art. The invention provides a refrigerated natural return weathering defrost control method and...
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The invention relates to the field of defrosting treatment, and particularly relates to a control method for natural air return defrosting in refrigeration and a control system for natural air return defrosting in refrigeration. The control method comprises the following steps: starting air return defrosting; acquiring a real-time environment temperature according to a signal of stopping refrigeration of a refrigeration chamber; determining the minimum time length of the air return defrosting and the maximum time length of the air return defrosting according to the real-time environment temperature; generating a shutdown signal of a refrigeration fan according to the time length of the air return defrosting, the minimum time length of the air return defrosting, the maximum time length of the air return defrosting and a temperature of a refrigeration defrosting sensor; determining a shutdown time of the refrigeration fan according to the real-time environment temperature; and recording a shutdown time length of the refrigeration fan in real time, and exiting the air return defrosting and carrying out refrigeration in the refrigeration chamber after the shutdown time length of the refrigeration fan is greater than or equal to T(shutdown). According to the control method and the control system, the air return defrosting time is limited, complete melting of a surface frost layer of an evaporator is guaranteed, and the problem of long-time no refrigeration of the refrigeration chamber due to that the temperature of the refrigeration defrosting sensor cannot achieve a start-up temperature for a long time is avoided.
Description
technical field [0001] The invention relates to the field of defrosting treatment, in particular to a refrigerated natural return defrosting control method and a refrigerated natural return defrosting control system. Background technique [0002] The existing dual-system air-cooled refrigerator freezer generally uses natural return to defrost, that is, after the refrigeration is completed, the solenoid valve is switched but the refrigerating fan continues to operate, and the heat carried by the refrigerated return air is used to heat the frost layer on the surface of the evaporator. To achieve the purpose of defrosting, a temperature sensor is generally installed on the outlet of the evaporator of the refrigerating room to control the defrosting process of the refrigerating room. Only when the temperature reaches the set temperature, that is, the refrigerator can supply cooling to the refrigerating room again. . The existing return air defrosting is mainly controlled by the...
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IPC IPC(8): F25D29/00F25D21/06
CPCF25D21/06F25D29/003F25D29/005
Inventor 张海婷徐海宾
Owner HEFEI HUALING CO LTD