CN110455034A - A kind of refrigerator air duct and control method - Google Patents
A kind of refrigerator air duct and control method Download PDFInfo
- Publication number
- CN110455034A CN110455034A CN201910885895.4A CN201910885895A CN110455034A CN 110455034 A CN110455034 A CN 110455034A CN 201910885895 A CN201910885895 A CN 201910885895A CN 110455034 A CN110455034 A CN 110455034A
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- CN
- China
- Prior art keywords
- fanning strip
- air
- air duct
- refrigerator
- defrost
- 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.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims abstract description 21
- 238000010257 thawing Methods 0.000 claims description 16
- 238000007710 freezing Methods 0.000 claims description 15
- 230000008014 freezing Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 5
- 230000000873 masking effect Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000009246 food effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- 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
- F25D17/065—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 with compartments at different temperatures
-
- 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
- F25D17/067—Evaporator fan units
-
- 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
-
- 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
- F25D29/00—Arrangement or mounting of control or safety devices
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
Abstract
The invention discloses a kind of refrigerator air duct and control methods, are related to household electrical appliances refrigeration technology field.A rotary air valve mechanism is fixedly installed in cooling air duct of the present invention；Rotary air valve mechanism includes lower fanning strip and the upper fanning strip that is mounted on lower fanning strip；The side of lower fanning strip and upper fanning strip is fixedly connected with an opposite flank inner wall of cooling air duct respectively；The arc-shaped side of lower fanning strip is fixed with an arc panel along middle part.The present invention passes through during evaporator defrost, control motor realizes that enter the wind arc port is not connected to air outlet to drive two drive rod rotations, and then two flappers of realization, hot gas to prevent defrost from generating flows into compartment, and indoor temperature has an impact between pair；And by the connection of air inlet arc port and air outlet come the regular supply of cooling capacity indoor between guaranteeing；This process effectively reduces the average fluctuation of a room temperature, and avoids the frosting of fan, improves the mouthfeel of fan reliability of operation and food.
Description
Technical field
The invention belongs to household electrical appliances refrigeration technology fields, more particularly to a kind of refrigerator air duct and control method.
Background technique
It is the Main way of current refrigerator technology development that big volume is air-cooled；Its refrigeration of wind cooling refrigerator is steamed in an indoor setting
Device is sent out, is sent cold wind to each space for needing to freeze through air duct by fan rotation, cold wind and an indoor hot-air change
Evaporator, which is back to, through air -return duct after heat carries out heat exchange again；In the process, an indoor damp-heat air enters evaporator room
Condensation frosts to the cold on an evaporator, to make evaporator keep preferable refrigeration effect, needs periodically to defrost to evaporator；
It is generally periodically defrosted using electrically heated mode at present, hot gas forms wind circulation, this side through former cooling air duct again in heating process
Formula between being easy to cause temperature fluctuation during defrosting of indoor temperature it is larger, influence the fresh-keeping effect of food storing.
In view of the above-mentioned problems, also there is related similar patent that masking mode is taken this, block the wind circulation during defrost,
Such as application No. is the Chinese invention patent of CN201611237095.4, a kind of constant temperature refrigerator and its control method are disclosed, is such as schemed
1, by designing masking device on refrigerating fan, when evaporator defrost, masking device will circulate in evaporator room
Air and fan housing supply air duct block, so that reaching hot gas during blocking defrost leads to compartment to an indoor formation wind circulation
Temperature rises more problem.But such mode, since fan section is the position of hot and cold air exchange, normal process of refrigerastion
In, there are frosts on electric fan.Above-mentioned implementation is arranged masking device directly on fan in defrost and blocks wind
It recycles, hot gas removal when defrost is difficult to be utilized in the frosting at fan, and global reliability has certain influence.
Therefore a kind of refrigerator air duct is required study come when reducing evaporator defrost, thermal current generates shadow to the temperature of compartment
It rings, and improves fan reliability of operation.
Summary of the invention
The purpose of the present invention is to provide a kind of refrigerator air duct and control method, by during evaporator defrost,
Control motor realizes that enter the wind arc port is not connected to air outlet, comes to drive two drive rod rotations, and then two flappers of realization
The hot gas for preventing defrost from generating flows into compartment, and indoor temperature has an impact between pair；And by air inlet arc port and go out
The connection in air port is come the regular supply of cooling capacity indoor between guaranteeing；It solves existing evaporator defrost and shadow easily is generated to compartment temperature
The problem of ringing, and fresh-keeping effect decline and fan operational reliability caused to decline.
In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
The present invention is a kind of refrigerator air duct, including refrigerator body, and the refrigerator body includes at least one compartment and at least
One be set between indoor evaporator room；Fan and evaporator are separately installed in the evaporator room；The compartment and steaming
A freezing fan housing is fixedly installed between hair device room, the side of the freezing fan housing is provided with several cold air outlets；The freezing fan housing
A cooling air duct being connected with evaporator room is formed between evaporator, the freezing fan housing and compartment form one and evaporator
The air -return duct that room is connected；
A rotary air valve mechanism is fixedly installed in the cooling air duct；
The rotary air valve mechanism includes lower fanning strip and the upper fanning strip that is mounted on lower fanning strip；The lower fanning strip
It is fixedly connected respectively with an opposite flank inner wall of cooling air duct with the side of upper fanning strip；
The arc-shaped side of the lower fanning strip is fixed with an arc panel along middle part；The central angle edge of the lower fanning strip is fixed
There is one first coaming plate；
The central angle edge of the upper fanning strip is fixed with the second coaming plate compatible with the first coaming plate；
One group of air inlet arc port is constituted between the lower fanning strip, upper fanning strip, arc panel, the first coaming plate and the second coaming plate
With one group of air outlet；
Two drive rods are rotatably connected between the central angle of the lower fanning strip and the central angle of upper fanning strip；
Two drive rods pass through a pair of of gear engaged transmission；And two are respectively fixed with a baffle on the drive rod；
The end of one drive rod is fixedly connected with the output shaft of motor, and the motor is fixedly mounted on lower fanning strip
Side.
Further, two guide rods are fixed at the central angle of the upper fanning strip, and the guide rod is located in the second coaming plate；
Guide post is fixed at the central angle of the lower fanning strip, the guide post is located in the first coaming plate, and the guide post
End face is provided with blind hole compatible with guide rod.
Further, the baffle includes stripe board and fixed ring；The side of the stripe board is fixed with a fixed ring, institute
Fixed ring is stated to be fixedly connected with drive rod.
Further, the arc-shaped side of the lower fanning strip is respectively fixed with a snap-gauge along both ends, is provided with one on the snap-gauge
Bayonet；
The arc-shaped side of the upper fanning strip fixes L-type card adapter plate along both ends respectively；The L-type card adapter plate and bayonet, which are formed, to be blocked
Connect cooperation.
Further, the end of the baffle forms with the side of the first coaming plate and the first coaming plate end sides limit respectively
Steric hindrance gear cooperation.
Further, two sleeves, the end shape of the sleeve and drive rod are fixed at the central angle of the upper fanning strip
At rotation connection.
A kind of control method of refrigerator air duct, comprising the following steps:
S001, judge whether refrigerator meets defrost condition, if meeting the condition for starting defrost, then follow the steps S002；
Before S002, defrosting, compressor is out of service, fan and refrigeration door opening, and electric motor starting simultaneously makes to enter the wind arc port
It is not connected to air outlet；So that the cold air on evaporator is entered refrigerating chamber through refrigerating air door, after running Nmin, executes step S003；
S003, defrosting start: compressor continues to remain off, fan and refrigeration air door close, air inlet arc port with
Air outlet continues to keep disconnected state, and defrosting heater is connected, and defrost thermal current is in evaporator indoor circulation；Detect defrost temperature
The defrost whether degree sensor temperature Tz is greater than setting stops temperature Tzmax and thens follow the steps S004 if more than Tzmax；
S004, defrost terminate, and defrosting heater disconnects, and compressor, fan and refrigeration air door continue to remain turned-off, and enter the wind arc
Shape mouth and air outlet continue to keep disconnected state, after Nmin, execute step S005；
S005, compressor are opened, and after running Nmin, execute step S006；
S006, compressor continue starting, and fan and refrigeration door opening, cold air are transported in refrigerator room and evaporator room's circulation
Row detects defrost temperature sensor temperature Tz and freezing compartment temperature sensor temperature Ts, and is difference DELTA T=(Ts-Tz), sentences
Whether disconnected Δ T is more than or equal to M1 DEG C, if so, closing refrigeration air door, continues to run；Judge whether Δ T is more than or equal to M2 DEG C, if
It is that then defrosting control terminates, into normal refrigerating state, enters the wind arc port with air outlet and keep the state being connected to.
Further, the setting Δ T and M2 DEG C of > M1 DEG C.
The invention has the following advantages:
1, the present invention drives two drive rod rotations by during evaporator defrost, controlling motor, and then realizes
Two flappers realize that air inlet arc port is not connected to air outlet, and the hot gas to prevent defrost from generating flows into compartment, right
Between indoor temperature have an impact；And by the connection of air inlet arc port and air outlet come the normal confession of cooling capacity indoor between guaranteeing
It answers；This process effectively reduces the average fluctuation of a room temperature, and avoids the frosting of fan, improves fan operation
The mouthfeel of reliability and food.
2, the present invention drives a drive rod rotation by motor, and another drive rod is driven by the engagement of two gears
Rotation and keep two baffle ends close to each other or separate to realize that two baffles rotate simultaneously, improve the closure of two air outlets or
The synchronism of opening guarantees the effect and reliability of operation of rotary air valve mechanism trap heat.
3, on the present invention is reinforced by the clamping engagement of L-type card adapter plate and snap-gauge upper latch notch and blind hole and guide rod cooperation
The bonding strength and the first coaming plate of fanning strip and lower fanning strip and the leakproofness of the second coaming plate cooperation, improve rotary wind door machine
The safety and leakproofness of structure.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of masking device position in the prior art；
Fig. 2 is the position view of rotary air valve mechanism of the invention；
Fig. 3 is the scheme of installation of rotary air valve mechanism of the invention in cooling air duct；
Fig. 4 is the structural schematic diagram of rotary air valve mechanism of the invention；
Fig. 5 is the schematic diagram that two baffles of the invention are opened；
Fig. 6 is the signal that two baffles of the invention are gathered；
Fig. 7 is the structural representation of upper fanning strip of the invention；
Fig. 8 is the structural representation of drive rod of the invention；
In attached drawing, parts list represented by the reference numerals are as follows:
1- refrigerator body, 2- compartment, 3- evaporator room, 4- freeze fan housing, 5- rotary air valve mechanism, fanning strip under 6-, 7-
Upper fanning strip, 8- drive rod, 9- baffle, 10- motor, 11- masking device, 201- cooling air duct, 202- air -return duct, 301- wind
Fan, 302- evaporator, 401- cold air outlet, 501- air inlet arc port, 502- air outlet, 601- arc panel, the first coaming plate of 602-,
603- guide post, 604- snap-gauge, the second coaming plate of 701-, 702- guide rod, 703-L type card adapter plate, 801- gear, 901- stripe board,
902- fixed ring, 6031- blind hole, 6041- bayonet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " inner wall ", "ON", "bottom", "top", " side ", " length
Indicating positions or the positional relationship such as degree ", " end ", " all sides ", are merely for convenience of description of the present invention and simplification of the description, rather than
The component or element of indication or suggestion meaning must have a particular orientation, and be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
As shown in Figs. 1-2, the present invention is a kind of refrigerator air duct and control method, including refrigerator body 1, and refrigerator body 1 is wrapped
It includes at least one compartment 2 and at least one is set to the evaporator room 3 in compartment 2；Fan is separately installed in evaporator room 3
301 and evaporator 302；A freezing fan housing 4 is fixedly installed between compartment 2 and evaporator room 3, the side of freezing fan housing 4 is provided with
Several cold air outlets 401；A cooling air duct 201 being connected with evaporator room 3 is formed between freezing fan housing 4 and evaporator 302, it is cold
Freeze fan housing 4 and forms an air -return duct 202 being connected with evaporator room 3 with compartment 2；
As shown in Figure 1, be in the prior art at fan 301 installation masking device 11,302 defrost of evaporator when
It waits, masking device 11 blocks the air to circulate in evaporator room 3 and fan housing supply air duct, thus during reaching blocking defrost
Hot gas causes compartment temperature to rise more problem to an indoor formation wind circulation；But since 301 part of fan is hot and cold air
The position of exchange, in normal process of refrigerastion, there are frosts on the flabellum of fan 301, reduce the reliable of the operation of fan 301
Property；
As Figure 2-3, the present invention is that a rotary air valve mechanism 5 is fixedly installed in cooling air duct 201；
As shown in Figure 4-8, rotary air valve mechanism 5 includes the lower upper fanning strip 7 fanning strip 6 and be mounted on lower fanning strip 6；
The fan-shaped edge of rotary air valve mechanism 5 is placed exactly in the two sides of cooling air duct 201, i.e., only rotary air valve mechanism 5 acts, cold
Amount or heat could pass through out of rotary air valve mechanism 5；The side of lower fanning strip 6 and upper fanning strip 7 respectively with cooling air duct 201
An opposite flank inner wall be fixedly connected, lower fanning strip 6 and upper fanning strip 7 can be pasted onto refrigeration by polyurethane foam
In the inner wall in air duct 201；Or fix lower fanning strip 6 and upper fanning strip 7 by welding；
The arc-shaped side of lower fanning strip 6 is fixed with an arc panel 601 along middle part, when two baffles, 9 end is close to each other, arc
The both ends of plate 601 and two baffles 9 form limit and stop cooperation, and constitute fan-shaped region between two baffles 9 and arc panel 601；
The central angle edge of lower fanning strip 6 is fixed with one first coaming plate 602；
The central angle edge of upper fanning strip 7 is fixed with second coaming plate 701 compatible with the first coaming plate 602；
Constituted between lower fanning strip 6, upper fanning strip 7, arc panel 601, the first coaming plate 602 and the second coaming plate 701 one group into
Wind arc port 501 and one group of air outlet 502；The first coaming plate 602 on lower fanning strip 6 and the second coaming plate 701 on upper fanning strip 7
It when abutting against cooperation, can be blocked at the central angle to lower fanning strip 6 and upper fanning strip 7, so that entire rotary air valve mechanism 5
Only there are two air inlet arc ports 501 and two air outlets 502 to be connected to the external world, without other gas inlet and outlets；
Two drive rods 8 are rotatably connected between the central angle of lower fanning strip 6 and the central angle of upper fanning strip 7；
Two drive rods 8 pass through a pair of of 801 engaged transmission of gear, and two drive rods, 8 top is respectively fixed with a gear 801, and two
Gear 801 is intermeshed；And two are respectively fixed with a baffle 9 on drive rod 8；
The end of one drive rod 8 is fixedly connected with the output shaft of motor 10, and motor 10 is fixedly mounted on the side of lower fanning strip 6
Face.
Wherein, two guide rods 702 are fixed at the central angle of upper fanning strip 7, and guide rod 702 is located in the second coaming plate 701；Under
Fanning strip 6 and upper fanning strip 7 all respectively include a connecting plate, two ring flat-plates and two side plates, the both ends of connecting plate and are separately connected
There is connecting plate, the end of ring flat-plate is connected with side plate, and the side of side plate and baffle 9 form limit and stop cooperation, prevent two baffles 9
When being located remotely from each other, 9 rotation amplitude of baffle is excessive to be detached from from upper fanning strip 7 or lower fanning strip 6, and cooling capacity or heat is caused to flow；
Guide post 603 is fixed at the central angle of lower fanning strip 6, guide post 603 is located in the first coaming plate 602, and guide post 603
The central axis of central axis and ring flat-plate coincides, and the end face of guide post 603 is provided with blind hole 6031 compatible with guide rod 702.
Wherein, baffle 9 includes stripe board 901 and fixed ring 902；The side of stripe board 901 is fixed with a fixed ring 902,
Fixed ring 902 is fixedly connected with drive rod 8, and a notch is provided in stripe board 901, is to provide space for the rotation of gear 801.
Wherein, the arc-shaped side of lower fanning strip 6 is respectively fixed with a snap-gauge 604 along both ends, is provided with a bayonet on snap-gauge 604
6041；
The arc-shaped side of upper fanning strip 7 fixes L-type card adapter plate 703 along both ends respectively；L-type card adapter plate 703 and 6041 shape of bayonet
At clamping engagement, to reinforce the bonding strength between upper fanning strip 7 and lower fanning strip 6.
Wherein, the end of baffle 9 forms with the side of the first coaming plate 602 and 602 end sides of the first coaming plate limit respectively
Steric hindrance gear cooperation.
Wherein, two sleeves 704 are fixed at the central angle of upper fanning strip 7, the end formation of sleeve 704 and drive rod 8 turns
Dynamic connection, sleeve 704 provide rotation basis for the rotation of drive rod 8, and drive rod 8 can be formed by bearing and sleeve 704 and be rotated
Cooperation can also make the end of drive rod 8 and sleeve 704 form clearance fit.
During defrost, motor 10 drives a drive rod 8 rotation, and under the engaged transmission of two gears 801, two drive rods
8 rotate synchronously, and two baffles 9 is driven to rotate simultaneously, so that two baffles 9 is starved end and are located remotely from each other, last baffle 9 turns to sector
On the side of plate 7 or lower fanning strip 6, and limit is formed with the side plate side of the second coaming plate 701 or the first coaming plate 602 and stops to match
It closes, baffle 9 blocks the air outlet 502 of rotary air valve mechanism 5 at this time, and air inlet arc port 501 is not attached to air outlet 502
Logical, cooling capacity will not pass through rotary air valve mechanism 5；
After defrost, when normally entering the refrigerating state to compartment 2, under the driving of motor 10, two drive rods 8 are same
The end of step two baffles 9 of driving is close to each other, and the end of two baffles 9 is made to form limit resistance with the both ends of arc panel 601 respectively
Gear cooperation, baffle 9 does not block the air outlet 502 of rotary air valve mechanism 5 at this time, air inlet arc port 501 and air outlet 502
It is connected, cooling capacity can freeze to compartment 2 by rotary air valve mechanism 5；
This rotary air valve mechanism 5 can avoid the frost of fan 301 far from fan 301, improve the operation of fan 301
Reliability.
A kind of control method of refrigerator air duct, comprising the following steps:
S001, judge whether refrigerator meets defrost condition, if meeting the condition for starting defrost, then follow the steps S002；
Before S002, defrosting, compressor is out of service, and fan 301 and refrigeration door opening, motor 10 start and makes to enter the wind arc
Shape mouth 501 is not connected to air outlet 502；The cold air on evaporator 302 is set to enter refrigerating chamber through refrigerating air door, after running N1min,
Execute step S003；
S003, defrosting start: compressor continues to remain off, and fan 301 and refrigeration air door are closed, and enters the wind arc port
501 continue to keep disconnected state with air outlet 502, i.e. rotary air valve mechanism 5 blocks cooling air duct 201, prevents from steaming
Heat in hair device room 3 enters in compartment 2, and defrosting heater is connected, and defrost thermal current recycles in evaporator room 3；Detection
The defrost whether defrost temperature sensor temperature Tz is greater than setting stops temperature Tzmax and thens follow the steps if more than Tzmax
S004；
S004, defrost terminate, and defrosting heater disconnects, and compressor, fan 301 and refrigeration air door continue to remain turned-off, into
Wind arc port 501 and air outlet 502 continue to keep disconnected state, after N2min, execute step S005；
S005, compressor are opened, and after running N3min, cooling evaporator room executes step S006；
S006, compressor continue starting, and fan 301 and refrigeration door opening, cold air are followed in refrigerator room and evaporator room 3
Inscription of loop detects defrost temperature sensor temperature Tz and freezing compartment temperature sensor temperature Ts, and is difference DELTA T=(Ts-
Tz), judge whether Δ T is more than or equal to M1 DEG C, if so, closing refrigeration air door, continue to run；Judge whether Δ T is more than or equal to
M2 DEG C, if so, defrosting control terminates, into normal refrigerating state, enter the wind what arc port 501 was connected to the holding of air outlet 502
State, i.e. rotary air valve mechanism 5 are to cooling air duct 201 without blocking；S006 is using relatively high air themperature to refrigerating chamber
Refrigeration is freezed using secondary lower air temperatures to freezing chamber top layer air port.
Wherein, Δ T and M2 > M1 DEG C is set.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (8)
1. a kind of refrigerator air duct, including refrigerator body (1), the refrigerator body (1) includes at least one compartment (2) and at least one
A evaporator room (3) being set in compartment (2)；Fan (301) and evaporator are separately installed in the evaporator room (3)
(302)；A freezing fan housing (4), the side of freezing fan housing (4) are fixedly installed between the compartment (2) and evaporator room (3)
Face is provided with several cold air outlets (401)；One is formed between the freezing fan housing (4) and evaporator (302) to be connected with evaporator room (3)
Logical cooling air duct (201), freezing fan housing (4) form an air -return duct being connected with evaporator room (3) with compartment (2)
(202)；It is characterized by:
A rotary air valve mechanism (5) is fixedly installed in the cooling air duct (201)；
The rotary air valve mechanism (5) includes lower fanning strip (6) and the upper fanning strip (7) being mounted on lower fanning strip (6)；It is described
The side of lower fanning strip (6) and upper fanning strip (7) is fixedly connected with an opposite flank inner wall of cooling air duct (201) respectively；
The arc-shaped side of the lower fanning strip (6) is fixed with an arc panel (601) along middle part；The central angle of the lower fanning strip (6)
Edge is fixed with one first coaming plate (602)；
The central angle edge of the upper fanning strip (7) is fixed with compatible second coaming plate (701) with the first coaming plate (602)；
Between the lower fanning strip (6), upper fanning strip (7), arc panel (601), the first coaming plate (602) and the second coaming plate (701)
Constitute one group of air inlet arc port (501) and one group of air outlet (502)；
Two drive rods (8) are rotatably connected between the central angle of the lower fanning strip (6) and the central angle of upper fanning strip (7)；
Two drive rods (8) pass through a pair of of gear (801) engaged transmission；And two are respectively fixed with one on the drive rod (8)
Baffle (9)；
The end of one drive rod (8) is fixedly connected with the output shaft of motor (10), and the motor (10) is fixedly mounted on down
The side of fanning strip (6).
2. a kind of refrigerator air duct according to claim 1, which is characterized in that consolidate at the central angle of the upper fanning strip (7)
Surely have two guide rods (702), and the guide rod (702) is located in the second coaming plate (701)；
It is fixed with guide post (603) at the central angle of the lower fanning strip (6), the guide post (603) is located at the first coaming plate (602)
It is interior, and the end face of the guide post (603) is provided with and guide rod (702) compatible blind hole (6031).
3. a kind of refrigerator air duct according to claim 1, which is characterized in that the baffle (9) include stripe board (901) and
Fixed ring (902)；The side of the stripe board (901) is fixed with a fixed ring (902), the fixed ring (902) and drive rod
(8) it is fixedly connected.
4. a kind of refrigerator air duct according to claim 1, which is characterized in that the arc-shaped side of the lower fanning strip (6) is along two
End is respectively fixed with a snap-gauge (604), is provided with a bayonet (6041) on the snap-gauge (604)；
The arc-shaped side of the upper fanning strip (7) fixes L-type card adapter plate (703) respectively along both ends；The L-type card adapter plate (703) with
Bayonet (6041), which is formed, to be engaged by clamping.
5. a kind of refrigerator air duct according to claim 1, which is characterized in that the end of the baffle (9) is respectively with first
The side of coaming plate (602) and the first coaming plate (602) end sides form limit and stop cooperation.
6. a kind of refrigerator air duct according to claim 1, which is characterized in that consolidate at the central angle of the upper fanning strip (7)
Surely have two sleeves (704), the end of the sleeve (704) and drive rod (8), which is formed, to be rotatablely connected.
7. a kind of control method of refrigerator air duct as claimed in any one of claims 1 to 6, which is characterized in that including following step
It is rapid:
S001, judge whether refrigerator meets defrost condition, if meeting the condition for starting defrost, then follow the steps S002；
Before S002, defrosting, compressor is out of service, and fan (301) and refrigeration door opening, motor (10) start and makes to enter the wind arc
Shape mouth (501) is not connected to air outlet (502)；So that the cold air on evaporator (302) is entered refrigerating chamber through refrigerating air door, runs
After N1min, step S003 is executed；
S003, defrosting start: compressor continues to remain off, and fan (301) and refrigeration air door are closed, and enters the wind arc port
(501) continue to keep disconnected state with air outlet (502), defrosting heater is connected, and defrost thermal current is in evaporator room (3)
Circulation；The defrost whether detection defrost temperature sensor temperature Tz is greater than setting stops temperature Tzmax and then holds if more than Tzmax
Row step S004；
S004, defrost terminate, and defrosting heater disconnects, and compressor, fan (301) and refrigeration air door continue to remain turned-off, and enter the wind
Disconnected state is continued to keep in arc port (501) and air outlet (502), after N2min, executes step S005；
S005, compressor are opened, and after running N3min, execute step S006；
S006, compressor continue starting, and fan (301) and refrigeration door opening, cold air are followed in refrigerator room and evaporator room (3)
Inscription of loop detects defrost temperature sensor temperature Tz and freezing compartment temperature sensor temperature Ts, and is difference DELTA T=(Ts-
Tz), judge whether Δ T is more than or equal to M1 DEG C, if so, closing refrigeration air door, continue to run；Judge whether Δ T is more than or equal to
It M2 DEG C, if so, defrosting control terminates, into normal refrigerating state, enters the wind arc port (501) and air outlet (502) and keeps connecting
Logical state.
8. a kind of control method of refrigerator air duct according to claim 7, which is characterized in that setting Δ T and the M2 >
M1℃。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910885895.4A CN110455034A (en) | 2019-09-19 | 2019-09-19 | A kind of refrigerator air duct and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910885895.4A CN110455034A (en) | 2019-09-19 | 2019-09-19 | A kind of refrigerator air duct and control method |
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| CN110455034A true CN110455034A (en) | 2019-11-15 |
Family
ID=68492293
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121383A (en) * | 2019-12-30 | 2020-05-08 | 青岛海尔电冰箱有限公司 | Defrosting control method of single-system refrigerator, electronic device and refrigerator |
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