CN113915818B - Refrigerator with a door - Google Patents

Refrigerator with a door Download PDF

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Publication number
CN113915818B
CN113915818B CN202110007328.6A CN202110007328A CN113915818B CN 113915818 B CN113915818 B CN 113915818B CN 202110007328 A CN202110007328 A CN 202110007328A CN 113915818 B CN113915818 B CN 113915818B
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CN
China
Prior art keywords
end cover
mounting
shielding
air inlet
refrigerator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110007328.6A
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Chinese (zh)
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CN113915818A (en
Inventor
张升刚
韩丽丽
张月
张守杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Refrigerator Co Ltd
Original Assignee
Hisense Refrigerator Co Ltd
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Publication date
Application filed by Hisense Refrigerator Co Ltd filed Critical Hisense Refrigerator Co Ltd
Priority to CN202110007328.6A priority Critical patent/CN113915818B/en
Publication of CN113915818A publication Critical patent/CN113915818A/en
Application granted granted Critical
Publication of CN113915818B publication Critical patent/CN113915818B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The present invention provides a refrigerator, including: the box body is limited with a storage chamber, a fan air cavity communicated with the storage chamber, an evaporator cavity and an air inlet communicated with the evaporator cavity and the fan air cavity; the shielding device is arranged on one side of the air inlet close to the evaporator and comprises: the shielding structure is arranged at the air inlet; installing an end cover; the inner fixed end cover is positioned in the mounting end cover and is abutted against the mounting end cover to form a placing space; the driving mechanism comprises a driving shaft and a motor positioned in the placing space, one end of the driving shaft is connected with the motor in the placing space, the other end of the driving shaft penetrates through the inner fixed end cover to be connected with the shielding structure, and the motor drives the driving shaft to drive the shielding structure to move so as to open or close the air inlet; the air inlet can be closed when the evaporator is defrosted, so that hot air generated when the evaporator is defrosted is prevented from entering the storage chamber, and the temperature in the storage chamber is ensured to be stable; set up internal fixation end cover and form with the installation end cover butt and place the space, avoid the too big frosting in making the space of placing in the clearance between the two, and avoid the motor to wet.

Description

Refrigerator with a door
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator with a shielding device.
Background
Refrigerators have been commonly used in human lives as home appliances. At present, the mainstream refrigerator is an air-cooled frost-free refrigerator, after the evaporator freezes, the evaporator is heated and defrosted through a heating wire without defrosting by a user. The air-cooled frostless refrigerator brings convenience to users and simultaneously influences the freshness preservation of food materials in a freezing chamber of the users. When the evaporator is heated and defrosted, the air channel of the freezing chamber has no closing function, the air at the evaporator part is communicated with the air in the freezing chamber, when the evaporator is heated by the heating wire, the hot air directly enters the freezing chamber through the upper air inlet, the temperature fluctuation of the freezing chamber is caused, and the fluctuation range can even reach about 15 ℃. Temperature fluctuation can accelerate protein degradation, promotes microorganism growth and reproduction, destroys muscle tissue, and therefore the temperature fluctuation condition of freezer directly influences the fresh-keeping period of frozen meat, also can cause some food to melt simultaneously and refreeze, influences the taste, influences user experience.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art. For this purpose,
according to an embodiment of the present disclosure, there is provided a refrigerator including:
the box body is limited with a storage chamber, a fan air cavity communicated with the storage chamber, an evaporator cavity and an air inlet communicated with the evaporator cavity and the fan air cavity;
the evaporator is arranged in the evaporator cavity and used for exchanging heat with air to generate cold air;
the fan is arranged in the fan air cavity and used for sucking cold air generated by the evaporator into the fan air cavity through the air inlet and then sending the cold air into the storage chamber;
the shielding device is arranged on one side, close to the evaporator, of the air inlet, and comprises:
the shielding structure is arranged at the air inlet;
the mounting end cover is connected to the box body;
the inner fixed end cover is positioned in the mounting end cover and is abutted with the mounting end cover to form a placing space between the inner fixed end cover and the mounting end cover;
the driving mechanism comprises a driving shaft and a motor located in the placing space, one end of the driving shaft is connected with the motor in the placing space, the other end of the driving shaft penetrates out of the inner fixing end cover to be connected with the shielding structure, and the motor drives the driving shaft to drive the shielding structure to move so as to open or close the air inlet.
The air inlet is provided with the shielding device capable of closing the air inlet, so that the air inlet can be closed when the evaporator defrosts, the evaporator cavity is completely isolated from the air cavity of the fan, hot air generated when the evaporator defrosts enters the storage chamber is avoided, the problem of large temperature fluctuation in the storage chamber caused by heating and defrosting of the evaporator is solved, the stability of the temperature in the storage chamber is ensured, heat cannot be lost, defrosting time is shortened, and defrosting energy consumption is reduced; the shielding device is arranged at one side of the air inlet close to the evaporator, so that hot air generated by defrosting of the evaporator is far away from the storage chamber as far as possible, and the influence of heat conduction on the temperature in the storage chamber is reduced; set up the internal fixation end cover and form with the installation end cover butt and place the space, in the space was placed to the motor was located, avoided producing too big clearance between internal fixation end cover and the installation end cover, avoided cold wind to get into through the clearance and place the space in make and place frosting in the space, and avoided the motor to wet.
According to this disclosed embodiment, the installation end cover includes installation end cover diapire and installation end cover lateral wall, the internal fixation end cover includes internal fixation end cover diapire and internal fixation end cover lateral wall, internal fixation end cover lateral wall tip with the inboard butt of installation end cover diapire avoids producing too big clearance between internal fixation end cover lateral wall and the installation end cover diapire.
According to an embodiment of the present disclosure, the shielding apparatus further includes:
the first sealing ring is arranged at the joint of the inner side of the bottom wall of the installation end cover and the end part of the side wall of the inner fixing end cover, the installation end cover and the inner fixing end cover are connected in a sealing mode through the first sealing ring, water vapor is prevented from entering the placing space through the joint of the installation end cover and the inner fixing end cover to generate frosting, and the motor is prevented from being damped.
According to the embodiment of the disclosure, the joint of the bottom wall of the installation end cover and the side wall of the internal fixing end cover is wrapped with a foaming layer, so that the sealing effect is enhanced.
According to this disclosed embodiment, be equipped with on the interior stiff end lid and supply the first through-hole that the drive shaft passed, be equipped with first seal groove in the first through-hole, the device that shields still includes:
the second sealing washer is located in the first seal groove, will the drive shaft with it is sealed between the internal fixation end cover, avoid steam to pass through between drive shaft and the internal fixation end cover get into place the space in for the motor is in the sealing ring, can play damp-proofing effect.
According to the embodiment of the present disclosure, the shielding structure includes the shielding plate and locates the shielding plate and keep away from the first spliced pole of air intake one side, be equipped with in the first spliced pole by first spliced pole outer end is to its inboard extension and end in inside the first spliced pole or the inside first internal thread of shielding plate, be equipped with first external screw thread in the drive shaft, first internal thread with first external screw thread closes, sets up first internal thread and ends inside first spliced pole or shielding plate, avoids gaseous passing in the gap between first internal thread and the first external screw thread, can play sealed effect, avoids in hot gas gets into the storage chamber also to avoid air conditioning to enter into the junction of first internal thread and first external screw thread to cause the frosting.
According to an embodiment of the present disclosure, the shielding apparatus further includes:
the mounting nut is provided with a second through hole, the mounting nut is sleeved on the driving shaft through the second through hole and sleeved at the outer end of the first connecting column to form a thread transmission cavity, the first internal thread and the first external thread are screwed in the thread transmission cavity, and a second sealing groove is formed in the second through hole;
and the third sealing ring is arranged in the second sealing groove and seals the driving shaft and the mounting nut, so that the threaded transmission cavity is sealed, and water vapor is prevented from entering the threaded transmission cavity to cause internal frosting.
According to an embodiment of the present disclosure, the shielding apparatus further includes:
the mounting gasket is sleeved on the driving shaft and located at the bottom in the mounting nut, a further sealing effect is achieved, and water vapor is prevented from entering the spiral transmission cavity to cause internal frosting.
According to the embodiment of the disclosure, a second connecting column is arranged on one side, close to the air inlet, of the shielding plate, and the first internal thread extends from the outer end of the first connecting column to the inner side of the first connecting column, then penetrates through the shielding plate to extend onto the second connecting column and is stopped inside the second connecting column.
Set up first internal thread and end inside the second spliced pole, avoid gaseous passing in the gap between first internal thread and the first external screw thread, can play sealed effect, avoid steam to enter into the storage chamber and also avoid air conditioning to enter into the junction of first internal thread and first external screw thread to arouse the frosting.
According to the embodiment of the disclosure, the installation end cover is a barrel-shaped structure with an opening end facing the shielding structure, the shielding structure can move to the opening end of the installation end cover to close the opening end of the installation end cover, cold air can be prevented from blowing to the driving mechanism, frosting on the driving mechanism can be avoided, and meanwhile, the problem that the cold air blown from the evaporator cannot enter the storage chamber to cause air volume loss can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a perspective view of a refrigerator according to an embodiment of the present disclosure;
fig. 2 is a front view of a partial structure of a refrigerator according to an embodiment of the present disclosure;
fig. 3 is a partial structural sectional view of a refrigerator according to an embodiment of the present disclosure;
fig. 4 is a partial sectional view of a refrigerator according to an embodiment of the present disclosure;
fig. 5 is an exploded view of a partial structure of a refrigerator according to an embodiment of the present disclosure;
fig. 6 is an exploded view of a partial structure of a refrigerator according to an embodiment of the present disclosure;
FIG. 7 is a front view of a screening arrangement according to an embodiment of the present disclosure;
FIG. 8 is a cross-sectional view of a shade device according to an embodiment of the present disclosure;
FIG. 9 is an exploded view of a portion of a shade device according to an embodiment of the present disclosure;
FIG. 10 is an exploded view of a portion of a shade device according to an embodiment of the present disclosure;
FIG. 11 is an exploded view of a portion of a shade device according to an embodiment of the present disclosure;
FIG. 12 is an exploded view of a portion of a shade device according to an embodiment of the present disclosure;
FIG. 13 is an exploded view of a portion of a shade device according to an embodiment of the present disclosure;
FIG. 14 is an exploded view of a portion of a shade device according to an embodiment of the present disclosure;
FIG. 15 is a partial cross-sectional structural view of a shade device according to an embodiment of the present disclosure;
FIG. 16 is a cross-sectional view of a heating structure according to an embodiment of the present disclosure;
FIG. 17 is an exploded view of a portion of a shade device according to an embodiment of the present disclosure;
fig. 18 is a schematic structural view of a heating structure according to an embodiment of the present disclosure.
In the above figures: a refrigerator 100; a screening arrangement 1; a shielding structure 11; a shielding plate 111; a guide hole 1111; a first reinforcing column 1112; a first connecting post 112; a first internal thread 1121; a second connecting column 113; a drive mechanism 12; a drive shaft 121; a first external thread 1211; a profiled shaft section 1212; a first limit step 1213; a pin hole 1214; shaft 1215; a power source 122; a capstan 123; the first protrusions 1231; follower wheel 124, profile hole 1241; a pin 125; a fixed mounting plate 13; a fixed mounting plate body 131; a first vent 1311; a heating structure through hole 1312; a guide rod 132; a first connecting shaft section 1321; a second limit step 1322; a heating structure placement slot 1323; mounting the end cap 14; mounting end cap bottom wall 141; mounting end cap side walls 142; a first connection hole 143; a first stopper 144; a third connection hole 145; a first collar 146; a second convex ring 147; a guide groove 148; an outlet hole 149; an inner fixed end cap 15; an inner fixed end cap bottom wall 151; a first placing groove 1511; a first mounting location 1512; a second placing groove 1513; an inner fixed end cap side wall 152; a coupling lug 153; the second connection hole 154; a first via 155; a first seal groove 1551; a first cylinder 156; a second cylinder 157; the placement space 161; a second seal ring 163; a threaded drive cavity 165; a third seal ring 166; mounting pads 167; mounting pad through hole 1671; a mounting nut 17; mounting nut bottom wall 171; mounting nut side wall 172; a second through hole 173; a second seal groove 1731; a heating structure 18; a heating wire 181; a heater wire placing pipe 182; a mounting rod 183; a spiral groove 1831; a positioning shaft 1832; mounting rod front end 1833; a mounting rod rear end 1834; the heating wire penetrates through the hole 1835; a front threaded connection section 1836; a rear threaded connection section 1837; a helical projection 1838; an electrical wire 184; a box body 2; a housing 21; an inner container 22; a liner back plate 221; liner backplane through holes 2211; a storage chamber 23; a fan air cavity 24; an evaporator chamber 25; an air inlet 26; an air duct assembly 27; an air duct back plate 271; a refrigerator door 3; an evaporator 4; and a fan 5.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
The present invention provides a refrigerator 100, which will be described in detail with reference to fig. 1 to 18, wherein fig. 1 is a perspective view of the refrigerator, fig. 2 is a front view of a partial structure of the refrigerator, and fig. 3 and 4 are sectional views of the partial structure of the refrigerator.
Referring to fig. 1 to 4, the refrigerator 100 includes an insulated cabinet 2, and the cabinet 2 may include an outer case 21 having an open front side, an inner case 22 disposed in the outer case and having an open front side, and a thermal insulation layer (not shown) disposed between the outer case and the inner case, and the thermal insulation layer may be a foamed layer.
The cabinet 2 defines a plurality of storage compartments 23 for storing food and the like, wherein the storage compartments may include a refrigerating compartment, a freezing compartment, a fresh food compartment, and the like. The refrigerator further includes a refrigerator door 3 installed at a front side of the cabinet to open or close the storage chamber.
The front side is a side facing a user when the refrigerator is used, and the rear side is an opposite side of the front side.
The refrigerator has a refrigeration system, which may be configured to include at least a compressor (not shown), a condenser (not shown), a throttle device (not shown), and an evaporator 4 to generate cool air for the storage compartment.
The box body 2 is further provided with a fan air cavity 24 communicated with the storage chamber, an evaporator cavity 25 and an air inlet 26 communicated with the evaporator cavity and the fan air cavity, and the evaporator 4 is arranged in the evaporator cavity 25 and used for exchanging heat with air to form cold air. The refrigerator 100 includes a blower fan 5, and the blower fan 5 is disposed in the blower fan chamber 24, and is used for sucking cool air generated by the evaporator into the blower fan chamber through the air inlet and then sending the cool air into the storage chamber.
An air duct assembly 27 is installed in the inner container 22, the air duct assembly is arranged on the front side of the inner container back plate 221, and an evaporator cavity 25 is formed between the air duct assembly 27 and the inner container back plate 221. It should be noted that the back is the side of the refrigerator opposite to the user.
Can be formed with fan wind chamber 24 and air inlet duct (not shown) in the wind channel subassembly, fan wind chamber passes through air inlet duct and storeroom intercommunication, forms air intake 26 on the wind channel subassembly, and the fan passes through the air intake with air conditioning with the evaporimeter intracavity and inhales the fan wind intracavity, then sends to in the storeroom through air inlet duct, provides air conditioning for the storeroom.
Specifically, the air duct assembly includes an air duct back plate 271, an air duct cover plate (not shown), and air duct foam (not shown) located between the air duct back plate and the air duct cover plate, a fan air cavity is formed between the air duct back plate and the air duct foam, the air inlet is located on the air duct back plate, the air inlet can be a circular opening, so that air can pass through the air inlet, and of course, the air inlet can be set to other shapes as long as air can pass through the air inlet.
After the refrigerator runs for a long time, the evaporator for providing cold volume can frost on thereby influence the transmission of cold volume, reduces the refrigeration performance of refrigerator, heats the evaporator in order to defrost, because communicate between evaporator chamber and the storeroom, leads to when the evaporator heats the defrosting, and hot-air passes through the air intake and enters into the storeroom in, causes the temperature fluctuation in the storeroom big, influences the quality of the interior stock article of storeroom.
Therefore, a shielding device 1 is added to the refrigerator, referring to fig. 5 and 6, the shielding device 1 is connected to the cabinet and is disposed at one side of the air inlet 26 close to the evaporator for opening or closing the air inlet, and the shielding device 1 can be connected to the inner container or the air duct assembly or both the inner container and the air duct assembly.
When the refrigerator is in a refrigerating working condition, the shielding device opens the air inlet, and at the moment, the fan normally sucks air refrigerated by the evaporator from the air inlet to refrigerate the storage chamber; when the refrigerator needs defrosting, firstly, an instruction is sent to the refrigerator electric control board, the shielding device closes the air inlet, and the evaporator cavity is completely separated from the fan air cavity, the air inlet duct and the storage chamber; then the evaporator heating wire heats and defrosts, after the defrosting is finished, the shielding device opens the air inlet, and the shielding device returns to the original refrigeration position.
The air inlet is provided with the shielding device capable of closing the air inlet, so that the air inlet can be closed when the evaporator defrosts, the evaporator cavity is completely isolated from the air cavity of the fan, hot air generated when the evaporator defrosts enters the storage chamber is avoided, the problem of large temperature fluctuation in the storage chamber caused by heating and defrosting of the evaporator is solved, the stability of the temperature in the storage chamber is ensured, heat cannot be lost, defrosting time is shortened, and defrosting energy consumption is reduced; the shielding device is arranged on one side of the air inlet close to the evaporator, so that hot air generated by defrosting of the evaporator is far away from the storage chamber as far as possible, and the influence of heat conduction on the temperature in the storage chamber is reduced.
Referring to fig. 7 and 8, the shielding apparatus 1 may include a shielding structure 11, and the shielding structure 11 is provided at the intake vent 26 to open or close the intake vent 26.
The shielding device 1 further comprises a driving mechanism 12, the driving mechanism 12 is connected to the shielding structure 11, and the driving mechanism drives the shielding structure 11 to move to open or close the air inlet. The moving direction of the shielding structure 11 can be arranged along the axial direction of the air inlet, so that the efficiency of opening and closing the air inlet can be improved. The driving mechanism 12 can be connected to the center of the shielding structure 11, so that the force point of the shielding structure 11 is located at the center thereof, thereby avoiding the problems of distortion and jamming during the moving process of the shielding structure, and making the operation of the shielding structure more stable and smooth.
Referring to fig. 9 and 10, the driving mechanism 12 may include a driving shaft 121 and a power source 122, the power source 122 is fixedly disposed on the box, the driving shaft 121 may be disposed along an axial direction of the air inlet, one end of the driving shaft 121 is connected to the shielding structure 11, the other end of the driving shaft 121 is connected to the power source 122, the power source 122 drives the shielding structure 11 to move back and forth through the driving shaft 121 to open or close the air inlet, and the power source and the driving shaft are configured to stably control the shielding structure to open and close the air inlet.
Referring to fig. 9 and 14, the shielding structure 11 is provided with a first internal thread 1121, the end of the driving shaft 121 connected to the shielding structure 11 is provided with a first external thread 1211, the first external thread 1211 is matched with the first internal thread 1121, the shielding device 1 further includes a fixed mounting plate 13, the fixed mounting plate 13 is fixedly arranged on the box body and is slidably connected with the shielding structure 11 for limiting the rotation of the shielding structure 11; because the fixed mounting plate is arranged to limit the shielding structure to rotate, the shielding structure can only be driven to move back and forth along the axial direction of the air inlet when the power source drives the driving shaft to rotate. Set up first internal thread, first external screw thread and fixed mounting board, can turn into the back-and-forth movement of shielding the structure with the rotation of drive shaft, realize opening and closing the air intake.
Specifically, the first internal threads can be double-helix threads, the stability of the connection of the shielding structure and the driving shaft can be improved, the thread pitch of the double-helix threads can be 10-60mm, the stroke of the shielding structure can be 10-30mm, and a relatively larger thread pitch is arranged compared with the stroke of the shielding structure, so that the rotation angle of the driving shaft can be reduced, and the efficiency of opening and closing the air inlet is improved.
The shielding structure 11 includes a shielding plate 111, a first connecting post 112 is disposed on a side of the shielding plate 111 away from the air inlet 2, the first connecting post 112 can be located at a center of the shielding plate, and the first connecting post 112 can be disposed perpendicular to the shielding plate 111 and disposed along a moving direction of the shielding plate. Specifically, the first internal thread 1121 may extend inward from an outer end of the first connecting column, and the first internal thread 1121 may be cut inside the first connecting column or inside the shielding plate or penetrate through the shielding plate.
Set up first internal thread 1121 and extend to the inboard by the outer end of first connecting column, can increase first internal thread length, enlarge application scope, reduce the thickness that shields the structure, reduce the occupation to air intake rear portion space, avoid reducing the thickness of the insulating layer of inner bag backplate department, avoid the box rear portion to produce the condensation phenomenon.
The first internal thread 1121 is arranged to be cut off in the first connecting column or in the shielding plate, so that gas is prevented from passing through a gap between the first internal thread and the first external thread, a sealing effect can be achieved, hot gas is prevented from entering the storage chamber, and cold gas is prevented from entering the connecting position of the first internal thread and the first external thread to cause frosting; the first internal thread 1121 is arranged to penetrate through the shielding plate, so that the length of the first internal thread can be increased, and the application range is expanded.
Specifically, the shielding plate 111 may be a circular plate, or a plate having another shape as long as the air inlet can be closed. When the air inlet is a circular opening and the shielding plate 111 is a circular plate, the diameter R2 of the shielding plate should be larger than the diameter R1 of the air inlet, so that the shielding plate can completely close the air inlet, thereby preventing a gap from being generated, preventing air from passing through the gap, and achieving the purpose of completely closing the air inlet.
In other embodiments of this patent, referring to fig. 8 and fig. 11, a second connecting column 113 may be further disposed on a side of the shielding plate 111 close to the air inlet, the second connecting column 113 is disposed opposite to the first connecting column 112, a first internal thread 1121 extends from an outer end of the first connecting column 112 to an inner side and then extends through the shielding plate to the second connecting column, and the first internal thread 1121 may extend through the second connecting column or end in the second connecting column.
A second connecting column is arranged on one side, close to the air inlet, of the shielding plate 111, and a first internal thread is arranged to extend to the second connecting column, so that the length of the first internal thread can be lengthened, the space at the rear part of the air inlet is not occupied, the reduction of the thickness of a foaming layer at the back plate of the liner is avoided, and the condensation phenomenon at the back of the refrigerator is avoided; the internal thread 1121 is arranged to be cut off in the second connecting column, so that the internal thread is prevented from penetrating through the second connecting column, gas is prevented from penetrating through a gap between the internal thread and the external thread, a sealing effect can be achieved, hot gas is prevented from entering the storage chamber, and cold gas is prevented from entering the connecting position of the first internal thread and the first external thread to cause frosting; set up first internal thread and run through the second spliced pole, can increase first internal thread's length, enlarge application scope.
In this embodiment, the power supply can be the motor, and the output shaft of motor can directly keep away from the one end fixed connection who shields the structure with drive shaft 121 for the motor directly orders about the drive shaft and rotates, and perhaps, the output shaft of motor passes through the driving medium and is connected with the drive shaft, and the motor rotates and drives the drive shaft through the driving medium and rotates. Specifically, referring to fig. 8 to 10, the driving mechanism 12 further includes a driving wheel 123 and a driven wheel 124, the driving wheel 123 is connected to an output shaft of the motor, the driven wheel 124 is engaged with the driving wheel 123 and is connected to the other end of the driving shaft, that is, the driven wheel 124 is fixedly connected to one end of the driving shaft far away from the shielding structure, and the motor drives the driving shaft to rotate through the driving wheel and the driven wheel, so that the shielding structure moves back and forth. Set up the action wheel and follow the driving wheel, can transmit the rotation of motor for the drive shaft for the motor drives the drive shaft and rotates.
Can set up motor deviation drive shaft one side, motor output shaft locates the motor and keeps away from one side of shielding structure 11 promptly, the motor is close to one side of shielding structure from the action wheel and is connected with the action wheel, make the motor can make full use of action wheel and the space between the shielding structure, reduce the thickness of shielding device when can normally accomplish drive work, reduce the occuping to air intake rear portion space, avoid reducing the thickness of the insulating layer of inner bag backplate department, avoid the refrigerator back to produce the condensation phenomenon.
The driven wheel 124 can be arranged to be sleeved on the driving shaft to drive the driving shaft to rotate together with the driven wheel, specifically, referring to fig. 10, the end of the driving shaft 121 connected with the driven wheel is provided with a special-shaped shaft section 1212, the driven wheel 124 is provided with a special-shaped hole 1241, the special-shaped shaft section 1212 is matched with the special-shaped hole 1241, and the special-shaped shaft section 1212 of the driving shaft is inserted into the special-shaped hole to rotate together with the driven wheel. The inner end department of dysmorphism axial segment 1212 is equipped with first spacing step 1213, avoids deviating from the inner of special-shaped axial segment 1212 from the driving wheel, and simple structure avoids the length of extension drive shaft, reduces the occupation to air intake rear space, avoids reducing the thickness of the insulating layer of inner bag backplate department, avoids the box rear portion to produce the condensation phenomenon.
The one end that the driving shaft was connected from the driving wheel is equipped with and is located the pinhole 1214 of keeping away from shielding structure one side from the driving wheel, actuating mechanism still includes the round pin axle 125 of adaptation in pinhole 1214, round pin axle 125 inserts in pinhole 1214, avoid deviating from its tip of driving shaft connection from the driving wheel, and adopt round pin axle 125 and the cooperation of cotter hole, moreover, the steam generator is simple in structure, avoid the length of extension drive shaft, reduce the occupation to air intake rear portion space, avoid reducing the thickness of the insulating layer of inner bag backplate department, avoid the box rear portion to produce the condensation phenomenon.
Specifically, the pin hole 1214 is arranged at the outer end of the special-shaped shaft section 1212, and the pin shaft 125 and the first limit step 1213 limit the driven wheel on the special-shaped shaft section, so as to prevent the driven wheel from being separated from the special-shaped shaft section, and enable the driven wheel to drive the driving shaft to rotate. In other embodiments of the present disclosure, the end of the driving shaft 121 may be fixedly connected to the shielding structure, that is, the driving shaft is fixedly connected to the shielding plate 111, and the driving shaft extends and retracts to drive the shielding structure to move back and forth, so that the transmission manner is simple, the intermediate loss is reduced, and the resources are saved. Specifically, the power source may be an air cylinder, and the driving shaft 121 is connected to a piston rod of the air cylinder, or the driving shaft 121 is a piston rod of the air cylinder, and the air cylinder makes the driving shaft 121 stretch and drive the shielding structure to move back and forth.
In this embodiment, referring to fig. 9, the fixed mounting plate 13 includes a fixed mounting plate body 131, the fixed mounting plate body 131 is fixed on the box and is disposed on one side of the shielding structure, specifically, the mounting plate body 131 may be configured to be connected to the air duct assembly back plate or the inner container, and is disposed on one side of the shielding structure close to the air inlet 2, so that the fixed mounting plate body 131 is located at the air inlet 2, and the fixed mounting plate body 131 may be configured to be attached to the back of the air duct back plate and is provided with a first ventilation hole 1311 opposite to the air inlet, so that the cold air can pass through the fixed mounting plate body 131. Can set up the air inlet and protrude in one side that the fixed mounting panel body is close to the shield plate for the shield plate can directly seal the air inlet, avoids the gap that produces between fixed mounting panel body and the wind channel backplate to influence the stability of temperature in the apotheca. Wherein, first ventilation hole 1311 can set up to the round hole, and the diameter R3 more than or equal to the diameter R1 of air intake of first ventilation hole avoids the fixed mounting panel body to shield the air intake, and influence air conditioning passes through.
It should be noted that the fixed mounting plate body 131 may also be disposed on a side of the shielding structure away from the air inlet.
The fixed mounting plate 13 further includes a guiding rod 132, the guiding rod 132 can be disposed along the axial direction of the air inlet for limiting the rotation of the shielding structure and/or guiding the shielding structure, the shielding structure is sleeved on the guiding rod and slidably connected to the guiding rod, the driving mechanism 13 drives the shielding structure to move along the guiding rod to open or close the air inlet, wherein the guiding rod 132 is disposed on one side of the fixed mounting plate body 131 close to the shielding structure, so that the shielding structure is sleeved on the guiding rod.
Specifically, be equipped with the guiding hole 1111 with the guiding rod 132 adaptation on the shield panel 111, guiding rod 132 insert in the guiding hole and with guiding hole sliding connection, make things convenient for the shield panel to be connected with the guiding rod, guiding rod 132 is the column pole, and the guiding hole is the round hole, reduces the resistance in guiding rod and guiding hole, the direction of being convenient for.
Be equipped with on shield plate 111 and be located guiding hole 1111 department and still be equipped with first enhancement post, guiding hole 1111 extends and runs through first enhancement post, sets up first enhancement post 1112 and can play the effect to shield plate 111 reinforcing strength, and the length of increase guiding hole improves the guide effect, improves the stability of shielding structure operation.
The number of the guide rods 132 is one, or two guide rods are provided, and when two guide rods are provided, the middle points of the two guide rods are opposite to the central position of the shielding structure; or, the guide bar can set up to have at least three, and when having at least three guide bar, the guide bar all is located the circumference of same circle, and the centre of a circle of this circle just to the central point who shields the structure puts, can avoid shielding the structure and remove the problem that the production distortion in-process and block for shield the structure operation more steadily, difficult production is rocked.
In this embodiment, referring to fig. 8-9 and 11, the shielding device 1 further includes a mounting end cover 14, the mounting end cover 14 is fixedly connected to the box, the mounting end cover 14 can be connected to the box through the fixing mounting plate 14, the mounting end cover 14 is connected to the guide rod, the mounting end cover is covered on one side of the driving mechanism far away from the shielding structure and is connected to the driving mechanism for fixing the driving mechanism, so as to provide a support for the driving mechanism and prevent the driving mechanism from shaking.
Specifically, the installation end cover 14 can be a barrel-shaped structure with an open end, the open end of the installation end cover 14 faces the shielding structure, the installation end cover 14 comprises an installation end cover bottom wall 141 and an installation end cover side wall 142, the installation end cover covers the side of the driving mechanism far away from the shielding structure, the shielding structure can move to the position of the open end of the installation end cover to close the open end of the installation end cover, cold air can be prevented from blowing to the driving mechanism, frosting on the driving mechanism can be avoided, and meanwhile, cold air blown from an evaporator can be prevented from not entering the storage chamber to cause air loss.
Specifically, the outer end of the guide rod 132 is provided with a first connecting shaft section 1321, the inner end of the first connecting shaft section 1321 is provided with a second limiting step 1322, the mounting end cover bottom wall 141 is provided with a first connecting hole 143, the first connecting hole 143 is matched with the first connecting shaft section 1321, the first connecting shaft section is inserted into the first connecting hole, the outer end of the first connecting shaft penetrates through the first connecting hole and is fixedly connected with the first limiting member 144, the mounting end cover bottom wall is limited between the second limiting step and the first limiting member, the mounting end cover is prevented from being separated from the guide rod, the mounting end cover bottom wall can be clamped between the second limiting step and the first limiting member, the mounting end cover is stably connected to the guide rod, and the mounting end cover is prevented from shaking on the guide rod.
Specifically, the first position-limiting element 144 may be a nut, and the nut is in threaded connection with the outer end of the first connecting shaft section, or the first position-limiting element is a pin, and a pin hole adapted to the pin is correspondingly formed in the outer end of the first connecting shaft section.
The installation end cover inside wall slope sets up, can be that the bottom wall becomes the obtuse angle setting in installation end cover inside wall and the installation end cover, and the processing of being convenient for, and can strengthen the intensity of installation end cover diapire and installation end cover lateral wall junction, improve the intensity and the stability of installation end cover. The guide groove 148 for the guide rod to pass through is formed in the inner side wall of the mounting end cover, so that the inner wall of the mounting end cover is prevented from interfering with the guide rod, the guide rod can pass through the side wall of the mounting end cover, the size of the mounting end cover can be reduced, the occupation of the rear space of the air inlet is reduced, and the condensation phenomenon generated on the back of the refrigerator is avoided.
The bottom wall of the mounting end cover is also provided with a wire outlet 149 through which a power line of the power source passes, so that the power source can work normally, the size of the wire outlet can be set to be adaptive to the power line, cold air entering the wire outlet due to the overlarge wire outlet is prevented from frosting, and the wire outlet 149 can be a round hole.
In this embodiment, the screening arrangement further comprises an inner fixing end cap 15, see fig. 8-15, for fixing the driving mechanism 12, which inner fixing end cap is fixed to the housing, in particular, the inner fixing end cap 15 may be fixed to the housing by means of a mounting end cap 14.
The internal fixation end cover 15 and the installation end cover 14 are connected in an abutting mode to form a placing space 161 between the internal fixation end cover and the installation end cover, specifically, the internal fixation end cover can be arranged in the installation end cover, the internal fixation end cover 15 is also of a barrel-shaped structure with an open end, the open end of the internal fixation end cover faces the installation end cover bottom wall 141, the internal fixation end cover 15 comprises an internal fixation end cover bottom wall 151 and an internal fixation end cover side wall 152, and the end portion of the internal fixation end cover side wall and the inner side of the installation end cover bottom wall are connected in an abutting mode to form a placing space 161 between the internal fixation end cover and the installation end cover bottom wall.
Specifically, be equipped with engaging lug 153 on the outer wall of internal fixation end cover lateral wall 152, be equipped with second connecting hole 154 on the engaging lug, be equipped with on the installation end cover with the third connecting hole 145 of second connecting hole 154 adaptation, second connecting hole and third connecting hole pass through screw zonulae occludens, make the inboard butt of internal fixation end cover lateral wall tip and installation end cover diapire, avoid producing too big clearance between internal fixation end cover lateral wall and the installation end cover diapire, it makes the space of placing frosting to avoid cold wind to get into through the clearance and place in the space, wherein the engaging lug can be provided with eight, the even distribution is around the internal fixation end cover, make the stable connection of internal fixation end cover on the installation end cover.
The power source 122 is disposed in the placing space 161, and the power source may be fixedly disposed on the inner fixing end cap and/or the mounting end cap, specifically, the motor or the cylinder is disposed in the placing space 161, and the motor or the cylinder is fixedly disposed on the inner fixing end cap and/or the mounting end cap. Be equipped with the first through-hole 155 that supplies the drive shaft to pass on the internal fixation end cover 15, drive shaft one end is passed first through-hole 155 and is connected in placing the space with the power supply, and is specific, can be for setting up first through-hole on the internal fixation end cover diapire.
The shielding device further comprises a first sealing ring (not shown), the first sealing ring is arranged at the joint of the mounting end cover and the internal fixing end cover, and particularly is arranged at the joint of the inner side of the bottom wall of the mounting end cover and the end part of the side wall of the internal fixing end cover, so that the internal fixing end cover 15 and the mounting end cover are connected in a sealing manner through the first sealing ring to form a placing space between the internal fixing end cover and the mounting end cover; the gap between the inner fixing end cover 15 and the mounting end cover 14 is avoided, water vapor is caused to enter the placing space through the connecting part of the mounting end cover and the inner fixing end cover to generate frosting, and the motor is prevented from being damped.
The inner wall of the first through hole 155 can be further provided with a first sealing groove 1551, the first sealing groove 1551 can be arranged in the middle of the first through hole, the shielding device further comprises a second sealing ring 163, the second sealing ring 163 is arranged in the first sealing groove and sleeved on the driving shaft, and the driving shaft is connected with the inner fixed end cover in a sealing mode through the second sealing ring.
Through setting up first sealing washer and second sealing washer, can improve the leakproofness of placing the space and further avoid steam to get into and place the space in, avoid the motor to wet, avoid reducing the life of motor, reduce cost of maintenance.
The action wheel also can locate from the driving wheel and place in the space 161, the driving shaft passes first through-hole 155 and is being connected from the driving wheel placing the space, can set up the drive shaft 121 and connect the tip and the inboard counterbalance of installation end cover diapire from driving wheel 124, it offsets with the inboard counterbalance of internal fixation end cover diapire to follow the driving wheel, can reduce the thickness of shielding device, reduce the occupation to air intake rear portion space, avoid reducing the thickness of the insulating layer of inner bag backplate department, avoid the refrigerator back to produce the condensation phenomenon, improve the stability of drive shaft simultaneously, avoid rocking from driving wheel and drive shaft.
One side that action wheel 123 is close to the installation end cover inner wall is equipped with first arch 1231, and installation end cover diapire inboard is equipped with the first bulge 146 with first protruding adaptation, and first arch inserts in the first bulge, can play location and further fixed effect, can avoid the action wheel to deviate from the motor output shaft. Still can set up first protruding tip and the inboard counterbalance of installation end cover diapire and/or the action wheel offsets with the top of first bulge loop to and the action wheel sets up the offside of first arch and offsets with the step wall on the motor output shaft, can avoid the action wheel to follow motor output shaft direction round trip movement, the stability of reinforcing action wheel.
The inner side of the bottom wall of the mounting end cover is also provided with a second convex ring 147, the end part of the driving shaft connected with the driven wheel is inserted into the second convex ring, the functions of positioning and further fixing the driving shaft can be achieved, and the mounting end cover and the inner fixing end cover can be conveniently connected.
The bottom wall of the inner fixed end cover is recessed towards the side of the shielding structure near the driving wheel to form a first placing groove 1511, and the motor is arranged in the first placing groove, so that the motor can fully utilize the space between the driving wheel and the shielding structure, and the thickness of the shielding device is reduced; first place be equipped with first installation position 1512 on the recess diapire and place recess 1513 to the second that shields the structure side recess formation, it is concrete, first installation position has at least one, but wherein first installation position symmetry sets up when having two, and the motor sets firmly on first installation position and the motor is close to one side of shielding the structure and locates the second and place the recess in, can be stable place the motor, avoid the motor to rock, still play the effect of location simultaneously, make things convenient for placing of motor.
The inner side face of the bottom wall of the inner fixing end cover is provided with a first cylinder 156 arranged at the first through hole 155, the first through hole 155 extends towards the first cylinder 156 and penetrates through the first cylinder, a driving shaft can penetrate conveniently, the length of the second through hole 155 can be prolonged, and a first sealing groove is convenient to arrange. The top wall of first cylinder 156 offsets with the lateral wall from the driving wheel, and second bulge loop lateral wall top also offsets with the lateral wall from the driving wheel for follow the driving wheel and be located between first cylinder 156 and the second bulge loop 147, can avoid following the driving wheel and rock back and forth along shielding structure direction of motion, the reinforcing is followed the stability of driving wheel.
Be equipped with the second cylinder 157 of locating first through-hole 155 department on the external lateral surface of internal fixation end cover diapire, first through-hole 155 extends and runs through the second cylinder to second cylinder 157 side, the drive shaft of being convenient for passes, the space in the external side of internal fixation end cover diapire can make full use of, the first through-hole length of extension, be convenient for set up first seal groove, reduce the occupation to air intake rear portion space, avoid reducing the thickness on the foaming layer of inner bag backplate department, avoid the refrigerator back to produce the condensation phenomenon.
In this embodiment, the shielding apparatus further includes a mounting nut 17, referring to fig. 8, 13 and 15, the mounting nut includes a mounting nut bottom wall 171 and a mounting nut side wall 172, a second through hole 173 is formed in the mounting nut 17, the second through hole 173 is formed in the mounting nut bottom wall 171, the mounting nut is sleeved on the driving shaft through the second through hole 173, the mounting nut is connected with the shielding structure to form a threaded transmission cavity 165, wherein the mounting nut is sleeved on an outer end of the first connection column to form a threaded transmission cavity 165 with the shielding structure, the mounting nut is provided with a second internal thread, the first connection column is provided with a second external thread, the mounting nut is connected with the first connection column through a thread, the first internal thread is screwed with the first external thread in the threaded transmission cavity, so that a joint of the first internal thread and the first external thread is prevented from being exposed to the outside, and frost formation of the joint of the first internal thread and the first external thread caused by direct blowing of cool air is prevented.
The cross sectional dimension that the drive shaft set up first external screw thread department is greater than the second through-hole for the drive shaft can't deviate from in the screw transmission chamber 165, inject first external screw thread on first internal thread, make mounting nut establish in the drive shaft at a pot head of drive shaft connection power supply, and is concrete, the second through-hole can be the round hole, the axis body 1215 that the drive shaft set up first external screw thread department can be the cylinder, the cross-sectional diameter of this cylinder is greater than the diameter of second through-hole, make the drive shaft can't deviate from in the screw transmission chamber.
A second sealing groove 1731 is arranged in the second through hole, the shielding device further comprises a third sealing ring 166, the third sealing ring is positioned in the second sealing groove and sleeved on the driving shaft, and the driving shaft and the mounting nut are sealed through the third sealing ring. Through setting up mounting nut, and shield and form screw thread transmission chamber 165 between the structure, set up the third sealing washer for the screw thread transmission chamber is sealed, prevents that steam from getting into the screw thread transmission intracavity and arousing inside frosting.
The bottom still is equipped with mounting pad 167 in the mounting nut, is equipped with mounting pad through-hole 1671 on the mounting pad, and the mounting pad cover is established on the drive shaft and its mounting pad through-hole inner wall offsets with the drive shaft, plays further sealed effect, prevents that steam from getting into the helical drive intracavity and arouse inside frosting.
The mounting nut diapire offsets with the internal fixation end cover diapire outside, and is concrete, and the mounting nut offsets with the second post body, reduces the thickness that shields the device, reduces the occupation to air intake rear portion space, avoids the refrigerator back to produce the condensation phenomenon.
In other embodiments of this patent, can fill the foaming layer in the installation end cover, can improve the heat preservation ability of shielding device, improve the holistic heat preservation ability of refrigerator, further reduce to set up the attenuate of shielding device to the foaming layer between inner bag backplate and the shell, reduce the problem of box rear portion condensation.
Specifically, actuating mechanism can include drive shaft and power supply, and the one end of drive shaft is connected with the structure of shielding, and the power supply sets firmly on the box and is connected with the other end of drive shaft, and power supply drive shaft drives and shields the structure removal, and foaming layer in the installation end cover can wrap up power supply and drive shaft, when improving the holistic heat preservation ability of refrigerator, avoids cold wind direct-blow power supply and drive shaft, avoids frosting.
When setting up the internal fixation end cover in the shielding device, wherein the internal fixation end cover can be located the installation end cover and be connected the formation with the installation end cover and be located placing the space between the two, the power supply is located and is placed in the space and place the space with drive shaft connection, the other end of drive shaft is worn out the internal fixation end cover and is connected with shielding structure, foaming layer in the installation end cover can wrap up the internal fixation end cover, wherein, the junction of installation end cover diapire and internal fixation end cover lateral wall can be wrapped up by the foaming layer in the installation end cover, when improving the holistic heat preservation ability of refrigerator, further will place the space and externally isolated, avoid steam to get into and place the space, avoid the motor to wet, avoid reducing the life of motor, reduce cost of maintenance, guarantee that actuating mechanism moves stably.
When the driving mechanism drives the shielding structure to move backwards to seal the opening end of the installation end cover, one side, away from the air inlet, of the shielding structure can be abutted to a foaming layer in the installation end cover, so that the work of the shielding structure is not influenced, the thickness of the foaming layer in the installation end cover is increased, air conditioning can be prevented from entering the installation end cover through a gap between the foaming layer and the installation end cover, and frosting in the installation end cover is avoided.
When the shielding structure includes the shielding plate and locates the shielding plate and keep away from the first spliced pole of air intake one side, be equipped with first internal thread in the first spliced pole, be equipped with first external screw thread in the drive shaft, first internal thread closes with first external screw thread spiral shell, actuating mechanism drive shielding structure backward movement can make the first spliced pole of foaming layer parcel in the installation end cover, further make first internal thread and first external screw thread isolated with the outside, avoid steam to get into the junction of first internal thread and first external screw thread, avoid frosting.
When the shielding device further comprises a mounting nut, the mounting nut is provided with a second through hole, the mounting nut is sleeved on the driving shaft through the second through hole and is sleeved at the outer end of the first connecting column to form a threaded transmission cavity, the first internal thread is screwed with the first external thread in the threaded transmission cavity, the driving mechanism drives the shielding structure to move backwards to enable the foaming layer in the mounting end cover to wrap the mounting nut, the overall heat preservation capacity of the refrigerator is improved, the threaded transmission cavity is isolated from the outside, water vapor is prevented from entering the threaded transmission cavity, and frosting at the joint of the first internal thread and the first external thread is avoided.
Foaming layer between inner bag backplate and the shell can set up to the outside of parcel at the installation end cover, further reduces the attenuate of shielding device to foaming layer between inner bag backplate and the shell, reduces the problem of box rear portion condensation.
Specifically, the liner back plate is provided with a liner back plate through hole 2211, the back of the installation end cover penetrates through the liner back plate through hole to enable the installation end cover to be positioned in a foaming layer between the liner back plate and the shell, part of the installation end cover can be arranged in the foaming layer between the liner back plate and the shell, or the installation end cover can be completely positioned in the foaming layer between the liner back plate and the shell, namely the opening end of the installation end cover is also positioned in the foaming layer between the liner back plate and the shell; the foaming layer can support the mounting end cover while the condensation on the rear part of the box body is reduced, and the stability of the shielding device is improved.
Or the liner back plate is sunken towards the back of the shell to form a liner groove, the mounting end cover is positioned in the liner groove, part of the mounting end cover can be arranged in the liner groove, or the mounting end cover can be arranged in the liner groove, namely the opening end of the mounting end cover is recessed in the liner groove opening; the foaming layer can support the mounting end cover while the condensation on the rear part of the box body is reduced, and the stability of the shielding device is improved.
To the thin refrigerator in foaming layer between ultra-thin or inner bag backplate and the shell, still can paste vacuum insulation panels at installation end cover back, can play further heat retaining effect, improve the heat preservation ability of shielding the device, further reduce the problem of box rear portion condensation, it surpasss installation end cover back outward flange to set up the vacuum insulation panels outward flange, specific for surpassing installation end cover diapire outward flange, make the insulation board size be greater than installation end cover diapire size, set up the great heated board of size, the installation end cover border subcooling that can avoid the heat bridge effect to arouse, it takes place the condensation to arouse that the box back corresponds installation end cover border department.
During operation of the screening arrangement, there is a problem that the screening arrangement 11 is frozen on the guide rods 132, so that the screening arrangement 11 cannot move back and forth, and the screening arrangement fails.
Thus, in further embodiments of the present patent, the shielding device further comprises a heating structure 18, see fig. 16-18, arranged in the guide bar 132 for avoiding freezing of the shielding structure on the guide bar. Specifically, the guide bar 132 is a hollow structure, a heating structure placing groove 1323 is formed in the guide bar 132, a heating structure through hole 1312 corresponding to the heating structure placing groove is formed in the fixed mounting plate body 131, the heating structure penetrates through the heating structure through hole 1312 to be inserted into the heating structure placing groove, the heating structure placing groove and the heating structure through hole are arranged, the heating structure is placed inside the guide bar, the heating structure is close to the guide bar as far as possible, and heating efficiency is improved.
The heating structure 18 comprises a heating wire, and two ends of the heating wire are connected with a heating wire power supply for heating, and the heating wire can melt ice on the guide rod by heating, so that the problem that the shielding structure 11 is frozen on the guide rod 132 to cause the failure of the shielding device is solved. The material of the heating wire can be constantan, kang Mengtong alloy, zinc cupronickel, nickel-chromium alloy, copper-nickel alloy, iron-chromium-aluminum alloy and the like.
Referring to fig. 16, the heating structure 18 may further include a heater wire accommodating tube 182, and the heater wire 181 is disposed in the heater wire accommodating tube 182, so that the heater wire accommodating tube can protect the heater wire. The heating structure 18 further comprises two sections of wires 184, two ends of the heating wire are respectively connected with one section of wire 184, the heating wire 181 can be sealed in the heating wire placing tube 182, so as to avoid the external environment from affecting the heating wire, and the wires 184 connecting the two ends of the heating wire penetrate out of the heating wire placing tube and are then connected with the power supply of the heating wire. The heating wire placing pipe can be made of high-temperature-resistant materials, and the heating wire can be prevented from melting the heating wire placing pipe. The heating wire placing pipe 182 sealed with the heating wire is inserted into the heating structure placing groove through the heating structure through hole 1312, and then the electric wire can be adhered to the fixed mounting plate by using tinfoil and/or the heating structure through hole 1312 is blocked, so that the heating structure is prevented from being separated from the heating structure placing groove.
In other embodiments of the present patent, referring to fig. 17 and 18, the heating structure 18 may include a mounting bar 183, the heating wire may be wound around the mounting bar 183 to be preferably fixed, and the mounting bar wound around the heating wire is inserted into the heating structure seating groove through the heating structure through-hole 1312; specifically, be equipped with helicla flute 1831 on the installation pole outer wall, the heater strip winding can avoid destroying the heater strip in the installation in the helicla flute 1831, can play the effect of protection heater strip, guarantees the life of heater strip. After the heating wire is wound on the mounting rod, the heating wire can be adhered to the mounting rod by using tinfoil or glue. The mounting bar 183 can be made of aluminum alloy, so that the heat conductivity can be increased, ice on the guide bar can be melted with the fastest efficiency, and the normal movement of the shielding structure 11 on the slide bar can be guaranteed.
Be equipped with location axle 1832 in the helicla flute 1831, the tip that the helicla flute is close to the guide bar outer end is located to the location axle, and the heater strip is gone up to winding to location axle department from the one end that the helicla flute was kept away from the location axle, then winds back the helicla flute around the location axle and keeps away from the tip of location axle, sets up the uniqueness that the heater strip installation can be ensured to the fixed axle.
Installation pole 183 has relative installation pole front end 1833 and installation pole rear end 1834 that sets up, the one end that installation pole rear end is close to the guide bar outer end for the installation pole, the one end of installation pole front end for the installation pole keeps away from the guide bar outer end, it wears out hole 1835 to be equipped with the heater strip on the installation pole front end 1833, the hole is worn out from the heater strip at the both ends of heater strip, then be connected with heater strip power, avoid installing and destroy the heater strip in the use, can play the effect of protection heater strip, guarantee the validity of heater strip work. Wherein, the heater strip wears to say the hole and can have two, and the both ends of heater strip are worn out from two heater strip biography holes respectively, can avoid heater strip both ends intertwine, improve the reliability of heater strip work.
The both ends of installation pole 183 are equipped with the threaded connection section respectively, and the both ends of installation pole 183 all are connected with fixed mounting board fixed connection through the screw thread, and both ends are connected with fixed mounting board 12 with the screw thread around setting up the installation pole, can reduce thermal contact resistance, promote heater strip heat utilization rate.
Specifically, the threaded connection section includes a front threaded connection section 1836 located at the front end of the mounting rod and a rear threaded connection section 1837 located at the rear end of the mounting rod, the rear threaded connection section 1837 is connected with the guide rod, and the front threaded connection section 1836 is connected with the guide rod and/or the fixed mounting plate body. The heater wire exit holes 1835 may be provided on the front threaded segment 1836.
The outer wall of the mounting rod is also provided with a spiral protrusion 1838 which is propped against the inner wall of the heating structure placing groove, so that the thermal resistance can be further reduced, and the heat transfer efficiency is improved.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A refrigerator, characterized by comprising:
the box body is limited with a storage chamber, a fan air cavity communicated with the storage chamber, an evaporator cavity and an air inlet communicated with the evaporator cavity and the fan air cavity;
the evaporator is arranged in the evaporator cavity and used for exchanging heat with air to generate cold air;
the fan is arranged in the fan air cavity and used for sucking cold air generated by the evaporator into the fan air cavity through the air inlet and then sending the cold air into the storage chamber;
the shielding device is arranged on one side, close to the evaporator, of the air inlet, and comprises:
the shielding structure is arranged at the air inlet;
the mounting end cover is connected to the box body, the mounting end cover is of a structure with an opening at one end, and the opening end of the mounting end cover faces the shielding structure;
the inner fixed end cover is positioned in the mounting end cover and is abutted with the mounting end cover to form a placing space between the inner fixed end cover and the mounting end cover;
the driving mechanism comprises a driving shaft and a motor positioned in the placing space, one end of the driving shaft is connected with the motor in the placing space, the other end of the driving shaft penetrates through the inner fixing end cover to be connected with the shielding structure, and the motor drives the driving shaft to drive the shielding structure to move so as to open or close the air inlet;
the mounting end cover covers one side of the driving mechanism far away from the shielding structure, and the shielding structure can move to the opening end of the mounting end cover to close the opening end of the mounting end cover.
2. The refrigerator of claim 1 wherein the mounting end cap includes a mounting end cap bottom wall and mounting end cap side walls, the internal fixation end cap includes an internal fixation end cap bottom wall and internal fixation end cap side walls, and ends of the internal fixation end cap side walls abut against an inside of the mounting end cap bottom wall.
3. The refrigerator of claim 2, wherein the shielding device further comprises:
the first sealing ring is arranged at the joint of the inner side of the bottom wall of the installation end cover and the end part of the side wall of the internal fixed end cover, and the installation end cover and the internal fixed end cover are connected in a sealing mode through the first sealing ring.
4. The refrigerator of claim 2 wherein the junction of the bottom wall of the mounting end cap and the side wall of the inner fixed end cap is encapsulated with a foam layer.
5. The refrigerator as claimed in claim 1, wherein the inner fixing end cap is provided with a first through hole for the driving shaft to pass through, a first sealing groove is provided in the first through hole, and the shielding device further comprises:
and the second sealing ring is arranged in the first sealing groove and seals the driving shaft and the inner fixed end cover.
6. The refrigerator as claimed in claim 1, wherein the shielding structure comprises a shielding plate and a first connecting post disposed on a side of the shielding plate away from the air inlet, the first connecting post has a first internal thread extending from an outer end of the first connecting post to an inner side thereof and terminating inside the first connecting post or the shielding plate, the driving shaft has a first external thread, and the first internal thread is screwed with the first external thread.
7. The refrigerator of claim 6, wherein the shielding device further comprises:
the mounting nut is provided with a second through hole, the mounting nut is sleeved on the driving shaft through the second through hole and sleeved at the outer end of the first connecting column to form a threaded transmission cavity, the first internal thread and the first external thread are screwed in the threaded transmission cavity, and a second sealing groove is formed in the second through hole;
and the third sealing ring is arranged in the second sealing groove and seals the driving shaft and the mounting nut.
8. The refrigerator of claim 7, wherein the shielding device further comprises:
and the mounting gasket is sleeved on the driving shaft and is positioned at the bottom in the mounting nut.
9. The refrigerator as claimed in claim 6, wherein the shielding plate is provided with a second connecting column at a side thereof adjacent to the air inlet, and the first internal thread extends from an outer end of the first connecting column to an inner side thereof and then extends through the shielding plate to the second connecting column and terminates inside the second connecting column.
10. The refrigerator of claim 1, wherein the mounting end cap is a barrel structure, and the shielding structure is movable to close the mounting end cap open end.
CN202110007328.6A 2021-01-05 2021-01-05 Refrigerator with a door Active CN113915818B (en)

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Citations (2)

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CN108800722A (en) * 2018-06-05 2018-11-13 海信（山东）冰箱有限公司 A kind of wind cooling refrigerator

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CN106247735B (en) * 2016-07-12 2019-08-13 青岛海尔股份有限公司 A kind of refrigerator
JP6970429B2 (en) * 2017-10-31 2021-11-24 アクア株式会社 refrigerator
CN108362066B (en) * 2018-02-09 2020-10-09 海尔智家股份有限公司 Fan shielding device and refrigerator
CN112082304B (en) * 2019-06-12 2023-04-07 海信冰箱有限公司 Refrigerating equipment

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CN108759228A (en) * 2018-06-05 2018-11-06 海信（山东）冰箱有限公司 A kind of wind cooling refrigerator
CN108800722A (en) * 2018-06-05 2018-11-13 海信（山东）冰箱有限公司 A kind of wind cooling refrigerator

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