Adsorption type sealed refrigerator door
Technical Field
The invention relates to a refrigerator accessory, in particular to a refrigerator door.
Background
The refrigerator is a common household appliance, can effectively prolong the storage time of food, and is one of necessary household appliances in the current family life; however, after the refrigerator is used for a long time, the sealing strips of the refrigerator door deform or age to different degrees, so that the sealing performance of the refrigerator door is reduced, the heat insulation performance of the refrigerator is reduced, and the storage and fresh-keeping capacity of food is reduced; meanwhile, when the refrigerator door cannot be sealed, outside water vapor enters the refrigerator and can be condensed on the inner wall of the refrigerator to form an ice layer, so that the refrigerating effect of the refrigerator is reduced, the refrigerating and fresh-keeping effects of the refrigerator are reduced, and more electric energy is consumed; therefore, the sealing ability of the refrigerator door is one of important standards for assessing the quality of the refrigerator.
Disclosure of Invention
Aiming at the problems, the invention provides the adsorption type sealed refrigerator door which is novel in structure and unique in principle and can effectively enhance the sealing effect of the refrigerator door, so that the heat preservation capability of the refrigerator is improved, and meanwhile, the power consumption is saved.
In order to solve the problems, the technical scheme adopted by the invention is as follows: the adsorption type sealed refrigerator door comprises a door body and a sealing strip capable of being matched with and adsorbed by a refrigerator body, wherein a heat insulation layer is arranged on the inner plate surface of the door body, and a handle is arranged on the outer plate surface;
the sealing strips are arranged on four sides of the inner plate surface of the door body and are composed of hollow pipes made of elastic materials, and adsorption holes are formed in one sides, facing the refrigerator body, of the hollow pipes;
the refrigerator door body is characterized in that an adjusting cavity is arranged on the door body, a port of the adjusting cavity is opposite to a refrigerator body, an elastic strain gauge is arranged at the port of the adjusting cavity in a sealing mode, and the elastic strain gauge and the adjusting cavity form a closed space; the closed space is communicated with the hollow pipe through an air duct.
The invention has the beneficial effects that: when the refrigerator door is opened, the adsorption hole is communicated with the outside, warm outside air enters the adsorption hole, and the elastic strain gauge is in a natural shape; after the refrigerator door is closed, the sealing strip and the edge of the refrigerator body are preliminarily adsorbed and closed, each adsorption hole is blocked by the edge of the refrigerator body, and at the moment, a cavity formed by the adjusting cavity, the air guide pipe and the adsorption hole is sealed; then, the cold air in the refrigerator cools the adjusting cavity through the elastic strain gauge, so that the air pressure in the cavity is gradually reduced, the adsorption holes are more tightly adsorbed on the edge of the refrigerator body under the action of the air pressure difference, and the refrigerator door is more tightly adsorbed on the refrigerator body; when the user pulls open the refrigerator door, elastic strain gauge can take place to the sunken elastic deformation of the door body, and finally the refrigerator door is opened, and elastic strain gauge reconversion.
The structure can gradually improve the sealing performance of the refrigerator door by utilizing the refrigeration effect of the refrigerator under the condition that the refrigerator door is initially closed, and effectively prevent the air leakage condition caused by slight deformation or aging of the sealing strip, thereby improving the air tightness and the heat insulation performance of the refrigerator; effectively preventing the water vapor from entering the refrigerator body and condensing into an ice layer and further reducing the energy consumption.
Preferably, the handle comprises a sliding column fixed on the panel surface outside the door body and a pull handle, and the pull handle and the sliding column are made of permanent magnetic materials with attractive magnetism; the end part of the pull handle is provided with a sliding groove matched with the sliding column, the depth of the sliding groove is greater than the length of the sliding column, an elastic bag is arranged between the end part of the sliding column and the bottom of the sliding groove, and two end faces of the elastic bag are fixed at the end part of the sliding column and the bottom of the sliding groove; an airtight telescopic cylinder is arranged in the adjusting cavity, and the axial end part of the airtight telescopic cylinder is opposite to the elastic strain gauge; the airtight telescopic cylinder can extend along the axial direction when gas enters; the airtight telescopic cylinder is communicated with the elastic bag through a flow guide pipe; when the user need open the refrigerator door, the pulling handle can make the pulling handle slide for the slip post, and the elasticity bag is lengthened this moment, so gas gets into the elasticity bag from airtight flexible section of thick bamboo, and airtight flexible section of thick bamboo shortens, and elasticity foil springback, so the volume reduces in adjusting the chamber, adjusts the inside atmospheric pressure increase of intracavity, and the atmospheric pressure increase of the adsorption orifice department that adjusts the chamber intercommunication, so adsorption efficiency descends, the opening refrigerator door that the user can be convenient this moment.
Preferably, the elastic strain gauge is fixedly provided with a damping cylinder, the damping cylinder is sleeved outside the airtight telescopic cylinder, and the inner wall of the damping cylinder is in damping contact with the airtight telescopic cylinder; the damping cylinder is sleeved outside the airtight telescopic cylinder, and a certain static friction force is kept between the damping cylinder and the airtight telescopic cylinder; when the air pressure in the adjusting cavity is low, the elastic strain gauge deforms under the action of pressure difference, so that the damping cylinder moves relative to the airtight telescopic cylinder, and the air pressure in the adjusting cavity gradually increases until the pressure difference is balanced with the damping force; the structure can ensure that the adsorption hole is kept with certain suction, and the hollow pipe cannot excessively deform due to too low air pressure in the adjusting cavity, so that the hollow pipe is aged or cracked, and the service life of the hollow pipe is ensured.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the door of the suction type refrigerator.
Fig. 2 is a schematic front view of the embodiment shown in fig. 1.
Detailed Description
Example (b):
in the embodiment shown in fig. 1 and 2, the adsorption type sealed refrigerator door comprises a door body 1 and a sealing strip 2 capable of being matched and adsorbed with a refrigerator body, wherein an insulating layer is arranged on the inner plate surface of the door body 1, and a handle is arranged on the outer plate surface;
the sealing strips 2 are arranged on four sides of the inner plate surface of the door body 1, the sealing strips 2 are composed of hollow tubes made of elastic materials, and one sides of the hollow tubes facing the refrigerator body are provided with adsorption holes 21;
an adjusting cavity 3 is arranged on the door body 1, the port of the adjusting cavity 3 is opposite to the refrigerator body, an elastic strain gauge 31 is arranged at the port of the adjusting cavity 3 in a sealing manner, and the elastic strain gauge 31 and the adjusting cavity 3 form a closed space; the closed space is communicated with the hollow pipe through an air duct 32;
the handle comprises a sliding column 41 fixed on the outer plate surface of the door body 1 and a pull handle 42, wherein the pull handle 42 and the sliding column 41 are made of permanent magnetic materials with attractive magnetism; a sliding groove matched with the sliding column 41 is formed in the end part of the pull handle 42, the depth of the sliding groove is larger than the length of the sliding column 41, an elastic bag 5 is arranged between the end part of the sliding column 41 and the bottom of the sliding groove, and two end faces of the elastic bag 5 are fixed to the end part of the sliding column 41 and the bottom of the sliding groove; an airtight telescopic cylinder 6 is arranged in the adjusting cavity 3, and the axial end part of the airtight telescopic cylinder 6 is over against the elastic strain gauge 31; the airtight telescopic cylinder 6 can extend along the axial direction when gas enters; the airtight telescopic cylinder 6 is communicated with the elastic bag 5 through a guide pipe 61 which can penetrate through the axis of the sliding column and is communicated with the elastic bag; the elastic strain gauge 31 is fixedly provided with a damping cylinder 311, the damping cylinder 311 is sleeved outside the airtight telescopic cylinder 6, and the inner wall of the damping cylinder 311 is in damping contact with the airtight telescopic cylinder 6.
When the refrigerator door is opened, the adsorption hole 21 is communicated with the outside, warm outside air enters the adsorption hole 21, and the elastic strain gauge 31 is in a natural state; after the refrigerator door is closed, the sealing strip 2 and the edge of the refrigerator body are preliminarily adsorbed and closed, each adsorption hole 21 is blocked by the edge of the refrigerator body, and at the moment, a cavity formed by the adjusting cavity 3, the air guide pipe 32 and the adsorption holes 21 is sealed; then, the cold air in the refrigerator cools the adjusting cavity 3 through the elastic strain gauge 31, so that the air pressure in the cavity is gradually reduced, and the adsorption holes 21 are more closely adsorbed on the edge of the refrigerator body under the action of the air pressure difference, so that the refrigerator door is more closely adsorbed on the refrigerator body; in the process, the pull handle 42 and the sliding column 41 keep magnetic adsorption, the volume of the elastic bag 5 is small, and then the airtight telescopic cylinder 6 keeps an expanded state; the expanded airtight telescopic cylinder 6 supports against the elastic strain gauge 31, and the elastic strain gauge 31 is effectively prevented from deforming, so that sufficient low air pressure is generated in the adjusting cavity 3, and the airtightness of the refrigerator door is further ensured.
When the user need open the refrigerator door, the pulling handle can make the pulling handle 42 slide for sliding column 41, elasticity bag 5 is elongated this moment, then gas gets into elasticity bag 5 from airtight telescopic tube 6, airtight telescopic tube 6 shortens, elasticity foil gage 31 kick-backs, then volume reduces in adjusting chamber 3, adjust the inside atmospheric pressure increase of chamber 3, with the atmospheric pressure increase of the absorption hole 21 department of adjusting chamber 3 intercommunication, then adsorption efficiency descends, the refrigerator door of opening that the user can be convenient this moment.
In this embodiment, a damping cylinder 311 is further fixedly disposed on the elastic strain gauge 31, the damping cylinder 311 is sleeved outside the airtight telescopic cylinder 6, and an inner wall of the damping cylinder 311 is in damping contact with the airtight telescopic cylinder 6; the damping cylinder 311 is sleeved outside the airtight telescopic cylinder 6, and a certain static friction force is kept between the damping cylinder 311 and the airtight telescopic cylinder 6; when the air pressure in the adjusting chamber 3 is too low, the force applied by the pressure difference to the elastic strain gauge 31 is larger than the static friction force, so that the damping cylinder 311 moves relative to the airtight telescopic cylinder 6, and then the air pressure in the adjusting chamber 3 is properly increased until the damping force can be balanced with the pressure generated by the pressure difference; this structure can guarantee that 21 departments of adsorption hole keep certain suction, can not cross low excessive deformation that causes the hollow tube because of the atmospheric pressure of adjusting in the chamber 3, causes the ageing or fracture of hollow tube to the life of hollow tube has been guaranteed.
In conclusion, the refrigerator door sealing structure can gradually improve the sealing performance of the refrigerator door by utilizing the refrigeration function of the refrigerator under the condition that the refrigerator door is initially closed, and effectively prevent the sealing strip 2 from being slightly deformed or being aged to cause air leakage, thereby improving the air tightness and heat insulation performance of the refrigerator, further effectively preventing water vapor from entering the refrigerator body of the refrigerator to be condensed into an ice layer, and further reducing energy consumption.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.