A refrigerator with a self-priming hermetic door

Abstract

The invention relates to the technical field of household electrical appliances, and discloses a self-priming airtight door of a refrigerator, which is drawn out from the negative pressure chamber by means of an arc-shaped extrusion rod to reduce the air pressure inside the negative pressure chamber, and at the same time, the effect is achieved through the air guide hole and the guide hole. The gas groove is passed to the flow limiting device. Since the cross-sectional shape of the flow limiting hole in the flow limiting device is funnel-shaped and the outer hole diameter R1 > the inner hole diameter R2 > the middle hole diameter R3, the hole has flow limiting properties for gas and the closing speed is relatively fast. Fast, making it difficult for external air to enter the air guide groove and air guide hole through the restrictor hole. When the refrigerator door is completely closed, the outer cavity is in contact with the restrictor device, thereby resisting the restrictor hole and causing the internal low air pressure to act on the On the locking device, the bullet-shaped needle is moved by suction, and the tip of the bullet-shaped needle enters the R3 of the flow-limiting hole and contacts with the flow-limiting plate, which increases the external force required for opening the door and reduces the refrigerator temperature. The probability of the door being opened by mistake improves the effect of the anti-mis-opening function of the device.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a refrigerator with a self-priming hermetic door. Background technique [0002] Refrigerator is a kind of pressurization and decompression of refrigerant through compressor, so that the refrigerant liquefies and releases heat outside the refrigerator, and at the same time vaporizes and absorbs heat inside the refrigerator, so that the inside of the refrigerator can maintain a lower temperature. Keep the food and ingredients placed inside at a lower temperature to prolong its storage time. The existing refrigerator door is generally sealed by the adsorption effect of the magnetic adhesive strip installed on the door frame. This structure is relatively simple and practical. Stronger and lower production costs. [0003] However, the magnetism of the magnetic strip will gradually weaken with the increase of use time. In the end, the adsorption capacity of the magnetic s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing refrigerator door proposed in the background technology, the present invention provides a refrigerator with a self-priming hermetic door, which can assist in closing when the magnetic strip is weak. , Solve the problem that the traditional refrigerator door magnetic suction strip cannot be closed well after the magnetism becomes weak

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