CN104896866B - A kind of detection position limiting structure, refrigerator and the cold storage plant of cold storage plant air door - Google Patents
A kind of detection position limiting structure, refrigerator and the cold storage plant of cold storage plant air door Download PDFInfo
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- CN104896866B CN104896866B CN201510292723.8A CN201510292723A CN104896866B CN 104896866 B CN104896866 B CN 104896866B CN 201510292723 A CN201510292723 A CN 201510292723A CN 104896866 B CN104896866 B CN 104896866B
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Abstract
The invention discloses a kind of detection position limiting structure, refrigerator and the cold storage plant of cold storage plant air door, be related to cold storage plant technical field, for solve throttle condition signal can not feed back to main control chip in the prior art and air door be not closed completely it is real caused by between indoor temperature be difficult to control to the problem of invent.The detection position limiting structure of cold storage plant air door of the present invention, including support base, air door, drive device and main control chip, support base is provided with air port, air door is provided with air port, drive device is used to drive air door to rotate, also include closed position detection switch, closed position detection switch is mechanical switch, mechanical switch and main control chip connection, mechanical switch has limiting section, as air door is to the rotation of closed position, air door can extrude the acting surface of mechanical switch, when air door is completely closed, air door can trigger mechanical switch, mechanical switch is set to send the first feedback signal to main control chip, limiting section can lock air door simultaneously.The present invention is used to distribute cold to compartment.
Description
Technical field
The present invention relates to cold storage plant technical field, more particularly to a kind of detection position limiting structure, the ice of cold storage plant air door
Case and cold storage plant.
Background technology
Air door is electronic load important in cold storage plant, for carrying out cold distribution to each compartment.When indoor
When temperature is higher than design temperature, drive device driving air door is opened, and the cold that evaporator is produced is entered the compartment by air door,
So that the indoor temperature reduction of this；When an indoor temperature is less than design temperature, drive device driving air door is closed, and is made
The cold that evaporator is produced stops entering the compartment, so that the temperature for preventing this indoor is too low.
Air door of the prior art, without any feedback signal, is unable to completely close when completely closing when air door breaks down
When, it is impossible to throttle condition signal is fed back into main control chip, to carry out fault restoration or processing, indoor temperature is difficult between causing
Control.In addition, after drive device driving air door is completely closed, drive device stops, in driving reaction force and flowing cold
Impetus under, air door can turn an angle to the direction of opening, air door is not closed completely reality, and cold can continue into phase
The compartment answered, indoor temperature is difficult to control between also resulting in.
The content of the invention
Embodiments of the invention provide a kind of detection position limiting structure, refrigerator and the cold storage plant of cold storage plant air door, can solve
Certainly in the prior art when air door, which breaks down, to be unable to completely close, it is impossible to which throttle condition signal is fed back into main control chip, with
Carry out fault restoration or processing, and air door be not closed completely it is real caused by between indoor temperature the problem of be difficult to control to.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
A kind of detection position limiting structure of cold storage plant air door, including support base, air door, drive device and main control chip,
The support base is provided with air port, is provided with the air door at the air port, the drive device be used to driving the air door to rotate with
The air port, in addition to closed position detection switch are opened or closed, the closed position detection switch is mechanical switch, described
Mechanical switch and main control chip connection, the mechanical switch have limiting section, with the air door turning to closed position
Dynamic, the air door can extrude the acting surface of the mechanical switch, when the air door is completely closed, and the air door can trigger described
Mechanical switch, makes the mechanical switch send the first feedback signal to the main control chip, while the limiting section can will be described
Air door is locked.
The detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention, is opened due to setting closed position to detect
Close, when air door is completely closed, closed position detection switch can send the first feedback signal to main control chip, therefore, work as air door
When failure is unable to completely close, closed position detection switch will not then send the first feedback signal, and main control chip can be obtained
Know that air door breaks down, independently repaired so as to be restarted by drive device or adjust the modes such as heater working condition and carry out failure
And processing, when damper faults can not be repaired independently, then damper faults code is shown by display board, facilitate technical staff to cold
Device is hidden to be repaired, and then indoor temperature between avoiding is the problem of be difficult to control to, further, since closed position detection
Switch as mechanical switch, and mechanical switch has limiting section, when air door is completely closed, limiting section can lock air door, prevent
Air door is rotated to the direction of opening, it is ensured that air door is positioned at completely closed state, so that avoid causes because air door is not closed completely
Between indoor temperature the problem of be difficult to control to.
The embodiment of the present invention additionally provides a kind of refrigerator, includes the detection position limiting structure of above-mentioned cold storage plant air door.
Refrigerator provided in an embodiment of the present invention, due to setting closed position detection switch, when air door is completely closed, is closed
Position detecting switch can send the first feedback signal to main control chip, therefore, when air door, which breaks down, to be unable to completely close, close
Closed position detection switch will not then send the first feedback signal, and main control chip can learn that air door breaks down, so that by driving
Dynamic device is restarted or adjusted the modes such as heater working condition and carries out failure independently reparation and processing, when damper faults can not be autonomous
During reparation, then damper faults code is shown by display board, facilitate technical staff to repair refrigerator, and then avoid compartment
The problem of interior temperature is difficult to control to, further, since closed position detection switch is mechanical switch, and mechanical switch has
Limiting section, when air door is completely closed, limiting section can lock air door, prevent air door from being rotated to the direction of opening, it is ensured that air door
Completely closed state is positioned at, is sent out so as to avoid the problem of indoor temperature is difficult to control between caused by air door is not closed completely
It is raw.
The embodiment of the present invention additionally provides a kind of cold storage plant, includes the spacing knot of detection of above-mentioned cold storage plant air door
Structure.
Cold storage plant provided in an embodiment of the present invention, due to setting closed position detection switch, when air door is completely closed,
Closed position detection switch can send the first feedback signal to main control chip, therefore, be unable to completely close when air door breaks down
When, closed position detection switch will not then send the first feedback signal, and main control chip can learn that air door breaks down, so that logical
Over-driving device is restarted or adjusted the modes such as heater working condition and carries out failure independently reparation and processing, when damper faults can not
During autonomous reparation, then damper faults code is shown by display board, facilitate technical staff to repair cold storage plant, and then keep away
The problem of indoor temperature is difficult to control between having exempted from, further, since closed position detection switch is mechanical switch, and machinery
Switch has limiting section, and when air door is completely closed, limiting section can lock air door, prevents air door from being rotated to the direction of opening,
Ensure that air door is positioned at completely closed state, so that it is unmanageable to avoid the indoor temperature between caused by air door is not closed completely
Problem occurs.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Schematic diagram when Fig. 1 opens for the detection position limiting structure apoplexy door of cold storage plant air door of the embodiment of the present invention；
Schematic diagram when Fig. 2 closes for the detection position limiting structure apoplexy door of cold storage plant air door of the embodiment of the present invention；
Fig. 3 is the schematic diagram for detecting limiting section in position limiting structure of cold storage plant air door of the embodiment of the present invention；
The signal that Fig. 4 cooperates for the detection position limiting structure protrusions and groove of cold storage plant air door of the embodiment of the present invention
Figure；
Fig. 5 is that magnetic part in the detection position limiting structure of cold storage plant air door of the embodiment of the present invention and the first adsorption piece are mutually inhaled
The schematic diagram of conjunction.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are based on shown in the drawings
Orientation or position relationship, are for only for ease of the description present invention and simplify description, rather than indicate or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Term " first ", " second " be only used for describe purpose, and it is not intended that indicate or imply relative importance or
The implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be expressed or imply
Ground includes one or more this feature.
Dividing plate is provided with the inner bag of the cold storage plants such as wind cooling refrigerator, the space that inner bag is surrounded is divided into by refrigerating chamber by dividing plate
Evaporator storehouse is provided with the back of refrigerating chamber refrigerating chamber, evaporator storehouse is connected with refrigerating chamber by freezing air channel, the back of the body of refrigerating chamber
Portion is connected provided with refrigeration air channel, refrigeration air channel with refrigerating chamber, is connected between refrigeration air channel and freezing air channel by blast pipe, in order to
Cold distribution is carried out to each compartment, air door can be set in corresponding air channel, for example, can be set in the exit of blast pipe
Put in air door, air door and drive device connection, evaporator storehouse and be provided with evaporator and fan, the cold that fan can produce evaporator
Refrigerating chamber is delivered to by freezing air channel, while being delivered to by blast pipe at air door, when the temperature in refrigerating chamber is higher than start
During temperature, drive device driving air door is opened, and the cold in blast pipe is flowed into refrigeration air channel by air door, and then flow into refrigeration
Freezed room；When the temperature in refrigerating chamber is less than shutdown temperature, drive device driving air door is closed, and is made cold in blast pipe
Amount stopping flows into refrigeration air channel, refrigerating chamber is stopped refrigeration.
Fig. 1 and Fig. 2 is a specific embodiment, this reality of the detection position limiting structure of cold storage plant air door of the embodiment of the present invention
Apply the detection position limiting structure of the cold storage plant air door in example, including support base 1, air door 2, drive device (not shown) and
Main control chip (not shown), support base 1, which is provided with air port 11, air port 11, is provided with air door 2, and the drive device is used to drive
Air door 2 is rotated to open or close air port 11, in addition to closed position detection switch 3 and stopping means 4, and closed position detection is opened
3 and main control chip connection are closed, as air door 2 is to the rotation of closed position, air door 2 can move closer to closed position detection and open
3 are closed, when air door 2 is completely closed, air door 2 can trigger closed position detection switch 3, turn off position detecting switch 3 to described
Main control chip sends the first feedback signal, while stopping means 4 can lock air door 2.
The detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention, due to setting closed position detection switch
3, when air door 2 is completely closed, closed position detection switch 3 can send the first feedback signal to main control chip, therefore, work as air door
When 2 failures are unable to completely close, closed position detection switch 3 will not then send the first feedback signal, main control chip
Learn that air door 2 breaks down, so as to restart by drive device or adjust the modes such as heater working condition to carry out failure autonomous
Repair and handle, when the failure of air door 2 can not be repaired independently, then the failure code of air door 2 is shown by display board, facilitate technology people
Member repairs to cold storage plant, and then indoor temperature between avoiding is the problem of be difficult to control to, and is limited further, since setting
Position device 4, when air door 2 is completely closed, stopping means 4 can lock air door 2, prevent air door 2 from being rotated to the direction of opening, protect
Card air door 2 is positioned at completely closed state, so that it is unmanageable to avoid the indoor temperature between caused by air door 2 is not closed completely
Problem occurs.
In order to detect whether air door breaks down, electric current testing can be also used, specifically, by drive device running
In current value be acquired, and contrasted with preset value, when air door breaks down, the current value and preset value collected
Mismatch, then it represents that air door breaks down.The feelings of frosting or icing occur because air door is operated in low temperature environment, on air door
Condition, now, the load of air door become the big electric current caused in drive device running and also increased, and the current value collected also can be with
Preset value is mismatched, and represents that air door breaks down, and actual upper wind door does not break down, i.e., electric current testing easily produces mistake
Sentence phenomenon.The detection position limiting structure of cold storage plant air door in the embodiment of the present invention, first can be sent when air door is completely closed
Feedback signal, the first feedback signal will not be then sent when air door, which breaks down, to be unable to completely close, that is, represents that event occurs in air door
Barrier, compared to electric current testing, the detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention will not be because of frosting or knot
The factors such as ice produce misjudgment phenomenon, so as to improve the accuracy of detection.
Support base 1 in reference picture 1, above-described embodiment includes rectangular recess 12, and the bottom surface of rectangular recess 12 is provided with air port
11, air door 2 is rotated with rectangular recess 12 and is connected, and the rotary shaft 21 of air door 2 is as shown in Figure 2.Closed position detection switch 3 can be set
In the side wall vertical with rotary shaft 21 of rectangular recess 12, as shown in Figures 1 and 2, closed position detection switch 3 may also set up in
The side wall of parallel with the rotary shaft 21 and remote rotary shaft 21 of rectangular recess 12 or the bottom surface for being arranged at rectangular recess 12,
In an embodiment of the present invention, reference picture 1, closed position detection switch 3 is mechanical switch, i.e., using machinery
The mode of touching changes the switch of the break-make of its internal circuit, and as air door 2 is to the rotation of closed position, air door 2 can be leaned on gradually
Acting surface that is near and extruding the mechanical switch, when air door 2 is completely closed, air door 2 can trigger the mechanical switch, make described
Mechanical switch sends first feedback signal to the main control chip.When needing to open air door 2, drive device drives wind
Door 2 is rotated to open position, as air door 2 is to the rotation of open position, the acting surface point of air door 2 gradually with the mechanical switch
From.The mechanical switch could be triggered when the acting surface of the mechanical switch being expressed into certain position due to air door 2, so as to carry
The high accuracy of detection, and the price of mechanical switch is relatively low, is manufactured into the detection position limiting structure of cold storage plant air door
This reduction.
In another embodiment of the invention, reference picture 2, closed position detection switch 3 is inductive switch, with air door
2 to closed position rotation, air door 2 can move closer to the induction zone of the inductive switch, when air door 2 is completely closed, air door 2
The induction zone of the inductive switch can be entered and the inductive switch is triggered, the inductive switch is sent to the main control chip
First feedback signal.When needing to open air door 2, in the presence of drive device, air door 2 can be gradually distance from sensing and open
The induction zone of pass.
Specifically, inductive switch can be magnetic induction switch, such as Hall switch, now, air door are provided with magnetic part, with
The magnetic part on rotation of the air door to closed position, air door can move closer to the induction zone of Hall switch, when air door is closed completely
When closing, the magnetic part on air door can enter the induction zone of Hall switch and trigger Hall switch, make Hall switch to the master control
Chip sends first feedback signal.Hall switch has the spies such as contactless, low-power consumption, long life, response frequency height
Point, so that the service life of the detection position limiting structure of cold storage plant air door is improved, in addition, when air door is completely closed, Hall
Switch can quickly sense magnetic part, and quickly send first feedback signal to main control chip, so as to improve detection
Sensitivity.
Inductive switch can also be photoelectric sensor switch, and as air door is to the rotation of closed position, air door can be moved closer to
The induction zone of photoelectric sensor switch, when air door is completely closed, air door can enter the induction zone of photoelectric sensor switch and by photoelectricity
The light that inductive switch is sent is reflected back, and receives the photoelectric device in photoelectric sensor switch, so as to trigger photoelectric sensor switch.
Photoelectric sensor switch not only fast response time, and restricted smaller by object materials, can not only detect magnetic bodies, moreover it is possible to
Glass, plastics are detected, the object of the material such as woodwork, detection range is wider.
Stopping means 4 in reference picture 2, the embodiment of the present invention includes the He of the first locating part 41 being arranged on support base 1
The second locating part 42 on air door 2 is arranged at, when air door 2 is in fully closed position, the first locating part 41 and second is spacing
Part 42, which can cooperate, locks air door 2.
In an embodiment of the present invention, the first locating part 41 is groove, and the second locating part 42 is projection, when air door 2
During in fully closed position, the projection can engage with the groove, so as to lock air door 2；When needing to open air door 2
When, in the presence of drive device, projection can be skidded off out of groove.Air door 2 is locked by groove and raised engaging, prevented
The direction that air door 2 is opened under the impetus of flowing cold to air door 2 is rotated, it is ensured that air door 2 is positioned at completely closed state,
So as to avoid the problem of indoor temperature is difficult to control between caused by air door 2 is not closed completely.
In addition, when the first locating part 41 is groove, the second locating part 42 can also be the door side of air door 2, at air door 2
When fully closed position, the Men Bianke of air door 2 engages with groove, so as to lock air door 2.
For convenience projection skidded off out of groove, the bottom land and notch of the groove are connected by cambered surface, with air door 2 to
The rotation of closed position, air door 2 can drive projection gradually to be slided along cambered surface into groove, when air door 2 is completely closed, and projection is sliding
To groove, engage with groove, so that air door 2 is locked, it is raised when drive device driving air door 2 is rotated to open position
It can be skidded off along cambered surface out of groove, because the setting of cambered surface makes the bottom land of groove and notch connection smoother, so as to facilitate convex
Rise and skidded off out of groove.
To ensure when air door 2 is completely closed, projection can be set along cambered surface slide into grooves on the support base 1 in the present embodiment
Have the guide groove connected with the cambered surface, thus, as air door 2 is to the rotation of closed position, it is raised can be from the entrance of guide groove
Cambered surface, and then slide into grooves are slided into guide groove, and along guide groove, so as to ensure that projection can when air door is completely closed
Along cambered surface slide into grooves.
It is raised along arc for convenience when air door is opened in order to ensure the engaging of raised and groove when air door is completely closed
Face is skidded off out of groove, and air door 2 is provided with blind hole in the present embodiment, raised one end in blind hole, and with the bottom of blind hole
Connected by elastic component, the raised other end is under the elastic force effect of elastic component and support base 1 is inconsistent, as air door 2 is to pass
The rotation of closed position, projection can move closer to groove, when air door 2 is completely closed, and the raised elastic force in elastic component can under acting on
Stretch into groove, so as to engage with groove.When needing air door to open, in the presence of drive device, air door 2 is to open position
Rotate, when projection slides to cambered surface, the extrudable elastic component of projection, and slided along the hole wall of blind hole to blind via bottom direction, so that
Make elastic component produce deformation, and then facilitate projection skidded off along cambered surface out of groove.
In another embodiment of the invention, the first locating part 41 is the first adsorption piece, and the second locating part 42 is second
Adsorption piece, when air door 2 is in fully closed position, first adsorption piece is with the mutual adhesive of the second adsorption piece to lock
Air door 2；When needing to open air door 2, in the presence of drive device, air door 2 overcomes the first adsorption piece and the second adsorption piece
Between attraction rotated to open position.Air door 2 is locked with the second adsorption piece mutual adhesive by the first adsorption piece,
Prevent the direction that air door 2 is opened under the impetus of flowing cold to air door 2 from rotating, it is ensured that air door 2, which is positioned at, to be completely closed
State, so as to avoid the problem of temperature indoor between caused by air door 2 is not closed completely is difficult to control to.
The first above-mentioned adsorption piece can be magnet or wind the electromagnet that is formed after hot-wire coil by iron core,
Second adsorption piece by the material of magnet or electromagnet magnetic absorption by that can be made；Or first adsorption piece is by can be by magnet
Or the material of electromagnet magnetic absorption is made, second adsorption piece is magnet or wound by iron core after hot-wire coil
The electromagnet of formation, can be by magnet or the material and magnet or electromagnetism iron phase of electromagnet magnetic absorption when air door is completely closed
Mutual adhesive, so as to lock air door.
Air door 2 is rotated to open position for convenience, when the first adsorption piece is by can be by magnet or electromagnet magnetic absorption
When material is made, the second adsorption piece is preferably electromagnet, when the second adsorption piece is by can be by magnet or the material of electromagnet magnetic absorption
When material is made, the first adsorption piece is preferably electromagnet.Now with the first adsorption piece by can be by magnet or the material of electromagnet magnetic absorption
Material is made, and the second adsorption piece is electromagnet to be specifically described：During air door 2 is rotated to closed position, electromagnet power-off,
When air door 2 is completely closed, attraction is produced between the first adsorption piece and electromagnet, electromagnet and the first adsorption piece is mutually inhaled
Air door 2 is locked in conjunction；When needing to open air door 2, electromagnet is powered, and makes electromagnet close to one end of the first adsorption piece and the
The polarity of one adsorption piece is identical, so that repulsive force is produced between the first adsorption piece and electromagnet, in the common work of drive device
Under, air door 2 can leave the induction zone of magnetic induction switch, be rotated to open position.Air door 2 open during, by
Electromagnet be powered, the attraction between the first adsorption piece and electromagnet is changed into repulsive force, the repulsive force facilitate air door 2 to
The rotation of open position.
When air door is completely closed, air door can also be locked using other position limiting structures, for example, can be set on support base
Sucker, sucker connection vacuum generator, as air door is to the rotation of closed position, air door can fit with the adsorption plane of sucker, this
When, the vacuum generator can extract the gas between the adsorption plane of sucker and damper surface out, make the adsorption plane and air door of sucker
Vacuum is produced between surface, so that air door is locked air door by sucker suction, when needing air door to open, vacuum generator
It can be inflated between the adsorption plane and damper surface of sucker, make the Vacuum solutions between the adsorption plane and damper surface of the sucker
Remove, under the collective effect of drive device, air door is gradually rotated to open position.By sucker and the mutual adhesive of air door by air door
Locking, prevents the direction that air door is opened under the impetus of flowing cold to air door from rotating, it is ensured that air door is positioned at complete pass
Closed state, so as to avoid the problem of temperature indoor between caused by air door is not closed completely is difficult to control to.
In order to detect whether air door is opened completely, referring to Figures 1 and 2, cold storage plant air door provided in an embodiment of the present invention
Detection position limiting structure, in addition to open position detection switch 5, open position detection switch 5 and main control chip connection, with
Rotation of the air door 2 to open position, air door 2 can move closer to open position detection switch 5, when air door 2 is opened completely, wind
Door 2 can trigger open position detection switch 5, open position detection switch 5 is sent the second feedback signal to the main control chip,
Thus, when air door 2, which breaks down, to be opened completely, open position detection switch 5 will not then send the second feedback signal, main
Control chip can learn that air door breaks down, and failure is carried out certainly so as to restart by drive device or adjust heater working condition
Major in multiple and handle, when damper faults can not be repaired independently, then damper faults code is shown by display board, facilitate technology people
Member repairs to cold storage plant, it is to avoid between indoor temperature the problem of be difficult to control to.
Open position detection switch 5 may be disposed at the side wall vertical with rotary shaft 21 of rectangular recess 12, may also set up in square
Connected in star 12 and side wall of the rotary shaft 21 parallel and close to rotary shaft 21, are open position detection switch 5 shown in Fig. 1 and Fig. 2
Located at the side wall vertical with rotary shaft 21 of rectangular recess 12, when air door 2 is opened completely, air door 2, which can trigger, is located at rectangular recess
Open position detection switch 5 on 12.
In an embodiment of the present invention, reference picture 1, open position detection switch 5 is mechanical switch, i.e., using machinery
The mode of touching changes the switch of the break-make of its internal circuit, and as air door 2 is to the rotation of open position, air door 2 can extrude machine
The acting surface of tool switch, when air door 2 is opened completely, air door 2 can trigger mechanical switch, make the mechanical switch to the master control
Chip sends second feedback signal；As air door 2 is to the rotation of closed position, the acting surface that air door 2 can be with mechanical switch
Separation, when the acting surface of mechanical switch being expressed into certain position due to air door 2 could Crush trigger switch, so as to improve inspection
The accuracy of survey, in addition, the price of mechanical switch is relatively low, so as to reduce the manufacture of the detection position limiting structure of cold storage plant air door
Cost.
In another embodiment of the invention, reference picture 2, open position detection switch 5 is inductive switch, with air door
2 to open position rotation, air door 2 can move closer to the induction zone of inductive switch, and when air door 2 is opened completely, air door 2 can enter
Enter the induction zone of the inductive switch and trigger the inductive switch, the inductive switch is sent described to the main control chip
Second feedback signal, when needing to close air door 2, in the presence of drive device, air door 2 can be gradually distance from inductive switch
Induction zone.
Specifically, inductive switch can be magnetic induction switch, such as Hall switch, now, air door are provided with magnetic part, with
The magnetic part on rotation of the air door to open position, air door can move closer to the induction zone of Hall switch, when air door is beaten completely
When opening, the magnetic part on air door can enter the induction zone of Hall switch and trigger Hall switch, make Hall switch to the master control
Chip sends second feedback signal.Hall switch has the spies such as contactless, low-power consumption, long life, response frequency height
Point, so that the service life of the detection position limiting structure of cold storage plant air door is improved, in addition, when air door is opened completely, Hall
Switch can quickly sense magnetic part, and quickly send second feedback signal to main control chip, so as to improve detection
Sensitivity.
Inductive switch can also be photoelectric sensor switch, and as air door is to the rotation of open position, air door can be moved closer to
The induction zone of photoelectric sensor switch, when air door is opened completely, air door can enter the induction zone of photoelectric sensor switch and by photoelectricity
The light that inductive switch is sent is reflected back, and receives the photoelectric device in photoelectric sensor switch, so as to trigger photoelectric sensor switch.
Photoelectric sensor switch not only fast response time, and restricted smaller by object materials, can not only detect magnetic bodies, moreover it is possible to
Glass, plastics are detected, the object of the material such as woodwork, detection range is wider.
Further, drive device is direct current generator, and the moment of torsion of direct current generator is big, and price is low, not only realizes air door
It is rapidly opened and closed, also reduce the manufacturing cost of the detection position limiting structure of cold storage plant air door.
In addition, drive device can also be stepper motor, the step angle of stepper motor is not by voltage, electric current and temperature etc.
Influence, therefore, when stepper motor, step number is acted as desired, and when driving air door to close or open, angle that air door is turned over is missed
Poor very little, and this error not long term accumulation, so as to ensure that when stepper motor stops, air door has been opened or completely completely
Close.
To ensure that air door 2 can be opened or completely closed completely, the main control chip and drive device connection are described
Main control chip can receive first feedback signal and open position detection switch 5 that closed position detection switch 3 sends and send
Second feedback signal, and control the drive device to close.When needing air door 2 to open, main control chip control driving
Device is opened, and makes drive device drive air door 2 to be rotated to open position, when air door 2 is opened completely, open position detection switch
5 send second feedback signal to main control chip, and main control chip control drive device is closed；It is main when needing air door 2 to close
Control chip controls drive device to open, make drive device drive air door 2 to be rotated to closed position, when air door 2 is completely closed, close
Closed position detection switch 3 sends first feedback signal to main control chip, and main control chip control drive device is closed.
Because when open position detection switch 5 detects the opening completely of air door 2, open position detection switch 5 is to master control
Chip sends the second feedback signal, and main control chip control drive device is closed, when closed position detection switch 3 detects air door 2
When completely closing, closed position detection switch 3 sends the first feedback signal to main control chip, and main control chip control drive device is closed
Close, closed so as to avoid air door 2 in the front driving device opening or completely close completely, so prevent air door 2 close less than
The cold that evaporator is produced caused by position is entered after compartment by gap between air door 2 and support base 1, indoor temperature between causing
The problem of being difficult to control to.
The detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention, with detection and spacing two kinds of functions,
And both functions can also produce linkage effect under some specific structures, tied so as to reach to save parts or make
The purpose of structure, is illustrated below by way of two embodiments：
Embodiment one：
The detection position limiting structure of cold storage plant air door in reference picture 1 and Fig. 3, the present embodiment, including support base 1, air door
2nd, drive device (not shown) and main control chip (not shown), support base 1 are provided with air port 11, air port 11 and are provided with
Air door 2, the drive device is used to drive air door 2 to rotate to open or close air port 11, in addition to closed position detection switch
3, closed position detection switch 3 is mechanical switch, i.e., change the switch of the break-make of its internal circuit by the way of machinery touching,
The mechanical switch and main control chip connection, the mechanical switch has limiting section 31, as air door 2 is to closed position
Rotate, air door 2 can extrude the acting surface of the mechanical switch, and when air door 2 is completely closed, air door 2 can trigger the machinery and open
Close, the mechanical switch is sent the first feedback signal to the main control chip, while limiting section 31 can lock air door 2.
The detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention, due to setting closed position detection switch
3, when air door 2 is completely closed, closed position detection switch 3 can send the first feedback signal to main control chip, therefore, work as air door
When 2 failures are unable to completely close, closed position detection switch 3 will not then send the first feedback signal, main control chip
Learn that air door 2 breaks down, so as to restart by drive device or adjust the modes such as heater working condition to carry out failure autonomous
Repair and handle, when damper faults can not be repaired independently, then damper faults code is shown by display board, facilitate technical staff
Cold storage plant is repaired, and then indoor temperature between avoiding is the problem of be difficult to control to, further, since closed position
Detection switch 3 is mechanical switch, and mechanical switch has limiting section 31, and when air door 2 is completely closed, limiting section 31 can be by air door
2 lockings, prevent air door 2 from being rotated to the direction of opening, it is ensured that air door 2 is positioned at completely closed state, so as to avoid because of air door
The problem of indoor temperature is difficult to control between caused by being not closed completely.
The limiting section implementation of mechanical switch has following two：
Implementation one：Above-mentioned mechanical switch can be rocker switch, and the limiting section 31 is the rocker switch
Acting surface, as the air door is to the rotation of closed position, the air door can extrude the acting surface of described rocker switch one end, when
When the air door is completely closed, the acting surface of described rocker switch one end is depressed, so as to trigger the rocker switch, makes described
Rocker switch sends first feedback signal to the main control chip, while the acting surface of the rocker switch other end sticks up
Rise, so as to withstand the rear surface of air door, the air door is locked, when the rear surface of air door described here is closed for air door, wind
Plane parallel with the plane where air port and away from the air port on door.This structure make use of the special construction of rocker switch real
Now to the spacing of air door, scheme is simple and is easily achieved.
Implementation two：Reference picture 4, limiting section 31 can be the groove being arranged on the mechanical switch acting surface, this
When, air door 2 is provided with projection 22, and as air door 2 is to the rotation of closed position, air door 2 can be switched by raised 22 extrusion machinery
Acting surface, when air door 2 is completely closed, projection 22 can trigger the mechanical switch, make the mechanical switch to the master control
Chip sends first feedback signal, while projection 22 and groove coordinate clamping to lock air door 2.Pass through projection 22 and groove
Cooperation clamping air door 2 is locked, prevent the direction that air door 2 is opened to air door under the impetus of flowing cold from rotating, protect
Card air door 2 is positioned at completely closed state, so that it is unmanageable to avoid the indoor temperature between caused by air door is not closed completely
Problem occurs.When needing to open air door 2, drive device drives air door 2 to be rotated to open position so that projection 22 is from groove
Inside skid off, and then separated with mechanical switch.
Opposite, limiting section can also be projection, and now, air door is provided with groove, with air door turning to closed position
Dynamic, air door can extrude the projection on the mechanical switch, and then extrude the mechanical switch, when the air door is completely closed,
Air door can trigger the mechanical switch, the mechanical switch is sent first feedback signal to the main control chip, simultaneously
Raised and groove coordinates clamping to lock air door.
Reference picture 4, raised 22 is skidded off, the bottom land and notch of the groove are connected by cambered surface 32 out of groove for convenience
Connect, with the acting surface that air door 2 can be switched to the rotation of closed position, air door 2 by raised 22 extrusion machinery, and gradually along arc
Face 32 is slided into groove, when air door 2 is completely closed, and projection 22 is slided in groove, coordinates clamping with groove, so that by air door
2 lockings, when drive device driving air door 2 is rotated to open position, projection 22 can be skidded off along cambered surface 32 out of groove, due to arc
The setting in face 32 makes the bottom land of groove and notch connection smoother, is skidded off so as to facilitate projection out of groove.
Reference picture 4, to ensure when air door 2 is completely closed, projection 22 can be along the slide into grooves of cambered surface 32, in the present embodiment
The acting surface of mechanical switch is provided with the guide groove 33 being connected with cambered surface 32, thus, with the turning to air door closed position of air door 2
Dynamic, projection 22 can enter guide groove 33 from the entrance of guide groove 33, and slide to cambered surface 32, and then slide into grooves along guide groove 33,
So as to ensure that when air door 2 is completely closed, projection 22 can be along the slide into grooves of cambered surface 32.
When needing air door 2 to open, reference picture 4 raised 22 is skidded off, the present embodiment along cambered surface 32 out of groove for convenience
Middle air door 2 is provided with blind hole 23, and one end of projection 22 is connected in blind hole 23 with the bottom of blind hole 23 by elastic component 24
Connect, in the presence of drive device, air door 2 is rotated to open position, when projection 22 is slided in cambered surface 32, projection 22 can extrude
Elastic component 24, and slided along the hole wall of blind hole 23 to the bottom direction of blind hole 23, so that elastic component 24 produces deformation, and then conveniently
Projection 22 is skidded off along cambered surface 32 out of groove.
Embodiment two：
The detection position limiting structure of cold storage plant air door in reference picture 1, Fig. 2 and Fig. 5, the present embodiment, including support base 1,
Air door 2, drive device (not shown) and main control chip (not shown), support base 1 are provided with air port 11, air port 11
Provided with air door 2, drive device is used to drive air door 2 to rotate to open or close air port 11, in addition to closed position detection switch 3
With magnetic part 421, closed position detection switch 3 is magnetic induction switch, the magnetic induction switch and main control chip connection, magnetic
Property part 421 on the air door 2, support base 1 includes the first adsorption piece 411 that can be with the magnetic absorption of magnetic part 421, with air door 2
To the rotation of closed position, magnetic part 421 can move closer to the induction zone of the magnetic induction switch, when air door 2 is completely closed,
Magnetic part 421 can enter the induction zone of the magnetic induction switch, the magnetic induction switch is sent first to the main control chip
Feedback signal, while air door 2 is locked in the mutual adhesive of 421 and first adsorption piece of magnetic part 411.
The detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention, due to setting closed position detection switch
3, when air door 2 is completely closed, closed position detection switch 3 can send the first feedback signal to main control chip, therefore, work as air door
When 2 failures are unable to completely close, closed position detection switch 3 will not then send the first feedback signal, main control chip
Learn that air door 2 breaks down, so as to restart by drive device or adjust the modes such as heater working condition to carry out failure autonomous
Repair and handle, when the failure of air door 2 can not be repaired independently, then the failure code of air door 2 is shown by display board, facilitate technology people
Member repairs to cold storage plant, and then indoor temperature between avoiding is the problem of be difficult to control to, in addition, it is complete to work as air door 2
During contract fully, air door 2 is locked in the mutual adhesive of 421 and first adsorption piece of magnetic part 411, can prevent direction of the air door 2 to opening
Rotate, it is ensured that air door 2 is positioned at completely closed state, so that it is difficult to avoid the indoor temperature between caused by air door 2 is not closed completely
The problem of to control.When needing to open air door 2, in the presence of drive device, air door 2 overcomes the He of magnetic part 421
Attraction between first adsorption piece 411 is rotated to open position, can be gradually distance from the induction zone of magnetic induction switch.
Above-mentioned magnetic part 421 can be magnet or wind the electromagnet formed after hot-wire coil by iron core.
The embodiment of the present invention additionally provides a kind of controlling party of the detection position limiting structure for above-mentioned cold storage plant air door
Method, when magnetic part 421 is electromagnet, methods described includes：
When needing air door 2 to close, main control chip receives air door shutdown signal, and main control chip control drive device is opened
Open, make drive device drive air door 2 to be rotated to closed position, while the electromagnet is powered, as the air door 2 is to close stance
The rotation put, electromagnet can move closer to the induction zone of the magnetic induction switch, and when the air door is completely closed, electromagnet can
Into the induction zone of the magnetic induction switch, the magnetic induction switch is set to send the first feedback signal to the main control chip, together
When electromagnet air door 2 is locked with the mutual adhesive of the first adsorption piece 411.
When needing air door 2 to open, when needing air door to open, the above method is further comprising the steps of：
Main control chip receives air door opening signal, and the main control chip control electromagnet power-off makes electromagnet and first
Attraction between adsorption piece 411 is eliminated, while the main control chip controls the drive device to drive air door 2 to open position
Rotate.
The above method, by being powered off to electromagnet, makes electromagnet and the first adsorption piece 411 during air door 2 is opened
Between attraction eliminate so that facilitate drive device driving rotation of the air door 2 to open position.
The first above-mentioned adsorption piece 411 can be electromagnet.
The embodiment of the present invention additionally provides a kind of controlling party of the detection position limiting structure for above-mentioned cold storage plant air door
Method, methods described includes：
The original state of the electromagnet is off-position, when needing air door 2 to close, and main control chip receives air door pass
Signal is closed, main control chip control drive device is opened, and makes drive device drive air door to be rotated to closed position, with the air door
To the rotation of closed position, magnetic part 421 can move closer to the induction zone of the magnetic induction switch, when the air door is completely closed
When, magnetic part 421 can enter the induction zone of the magnetic induction switch, the magnetic induction switch is sent the to the main control chip
One feedback signal, magnetic part 421 can attract the iron core of the electromagnet, make the iron core and magnetic part 421 of the electromagnet mutual
Air door 2 is locked in adhesive.
When needing air door to open, the above method is further comprising the steps of：
Main control chip receives air door opening signal, and the main control chip controls the electromagnet to be powered a period of time, made
Electromagnet after energization is identical with the polarity of magnetic part close to one end of magnetic part, so that being produced between magnetic part and electromagnet
Repulsive force, while the main control chip controls the drive device to drive the air door to be rotated to open position.
It should be noted that in order to avoid the electromagnet after energization produces influence, above-mentioned main control chip to magnetic induction switch
The time that the electromagnet is powered is controlled to be set in advance in main control chip by program, within this period, inductive switch
The magnetic sensed, but signal is not sent, in addition, in order to avoid the electromagnet after energization produces influence on magnetic induction switch, also
Can be by electromagnet outside the induction range of inductive switch.
The above method, by being powered to electromagnet, makes between magnetic part 421 and electromagnet during air door 2 is opened
Attraction be changed into repulsive force, the repulsive force facilitates rotation of the air door 2 to open position.
When the first adsorption piece 411 is electromagnet, it can also be controlled by the following method：
Main control chip receives air door shutdown signal, and main control chip control drive device is opened, and drive device is driven wind
Door is rotated to closed position, and the electromagnet is in off-position, and when the air door is completely closed, the magnetic part can enter
The induction zone of the magnetic induction switch, makes the magnetic induction switch send the first feedback signal, the master to the main control chip
Control chip receives the electric current that electromagnetism Tie Tong first direction is controlled after first feedback signal, makes electromagnet and the magnetic
The mutual adhesive of part.
When needing air door to open, the above method is further comprising the steps of：
Main control chip receives air door opening signal, and the main control chip controls the electric current of electromagnetism Tie Tong second direction
For a period of time, the sense of current of the electric current of the second direction and the first direction is on the contrary, the main control chip is controlled simultaneously
The drive device drives the air door to be rotated to open position.
In another implementation, when needing air door to open, the above method can also be realized by following steps：
Main control chip receives air door opening signal, and the main control chip controls the electromagnet power-off, while the master
Drive device described in control chip controls drives the air door to be rotated to open position.
Embodiments of the invention additionally provide a kind of control method of the detection position limiting structure of cold storage plant air door, the side
Method includes：When needing air door 2 to open, main control chip control drive device is opened, and drive device is driven air door 2 to open position
Rotation is put, when air door 2 is opened completely, open position detection switch sends second feedback signal, master control to main control chip
Chip controls drive device is closed；When needing air door 2 to close, main control chip control drive device is opened, and makes drive device band
Dynamic air door 2 is rotated to closed position, when air door 2 is completely closed, and closed position detection switch 3 sends described the to main control chip
One feedback signal, main control chip control drive device is closed.
The control method of the detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention, when open position detection
Switch 5 detect air door 2 completely opening when, open position detection switch 5 sends the second feedback signal, master control core to main control chip
Piece control drive device is closed, when closed position detection switch 3, which detects air door 2, to be completely closed, closed position detection switch 3
The first feedback signal is sent to main control chip, main control chip control drive device is closed, opened completely so as to avoid air door 2
Or the front driving device completely closed is closed, and then prevent the cold that air door 2 closes caused evaporator generation not in place from passing through
Gap enters after compartment between air door 2 and support base 1, the problem of indoor temperature is difficult to control between causing.
The embodiment of the present invention additionally provides a kind of detection of the cold storage plant air door in refrigerator, including any of the above-described embodiment
Position limiting structure.
Refrigerator provided in an embodiment of the present invention, due to setting closed position detection switch 3, when air door 2 is completely closed, is closed
Closed position detection switch 3 can send the first feedback signal to main control chip, therefore, be unable to completely close when air door 2 breaks down
When, closed position detection switch 3 will not then send the first feedback signal, and main control chip can learn that air door 2 breaks down, so that
Restarted by drive device or adjust the modes such as heater working condition and carry out failure independently reparation and processing, when the failure of air door 2
When can not independently repair, then the failure code of air door 2 is shown by display board, facilitate technical staff to repair refrigerator, and then
The problem of indoor temperature is difficult to control between avoiding, further, since stopping means is set, when air door 2 is completely closed,
Stopping means can lock air door 2, can prevent air door 2 from being rotated to the direction of opening, it is ensured that air door 2, which is positioned at, completely closes shape
State, so as to avoid the problem of indoor temperature is difficult to control between caused by air door 2 is not closed completely.
Due to the detection position limiting structure of cold storage plant air door and the various embodiments described above that are used in the refrigerator of the present embodiment
The detection position limiting structure of the cold storage plant air door of middle offer is identical, therefore the two can solve the problem that identical technical problem, and reaches
Identical Expected Results.
Other compositions of refrigerator on the embodiment of the present invention etc. have been well known to those skilled in the art, herein no longer
Describe in detail.The embodiment of the present invention additionally provides the cold storage plant air door in a kind of cold storage plant, including any of the above-described embodiment
Detection position limiting structure.
Cold storage plant provided in an embodiment of the present invention, due to setting closed position detection switch 3, when air door 2 is completely closed
When, closed position detection switch 3 can send the first feedback signal to main control chip, therefore, when the failure of air door 2 can not be complete
During closing, closed position detection switch 3 will not then send the first feedback signal, and main control chip can learn that air door 2 breaks down,
Failure independently reparation and processing are carried out so as to which the modes such as heater working condition are restarted or adjusted by drive device, when air door 2
When failure can not be repaired independently, then the failure code of air door 2 is shown by display board, facilitate technical staff to tie up cold storage plant
Repair, and then indoor temperature between avoiding is the problem of be difficult to control to, further, since stopping means is set, when air door 2 is complete
During closing, stopping means can lock air door 2, can prevent air door 2 from being rotated to the direction of opening, it is ensured that air door 2 is positioned at completely
Closed mode, so as to avoid the problem of indoor temperature is difficult to control between caused by air door 2 is not closed completely.
Due to the detection position limiting structure of cold storage plant air door used in the cold storage plant of the present embodiment and above-mentioned each reality
The detection position limiting structure for applying the cold storage plant air door provided in example is identical, therefore the two can solve the problem that identical technical problem, and
Reach identical Expected Results.
Other compositions of cold storage plant on the embodiment of the present invention etc. have been well known to those skilled in the art, herein
No longer describe in detail.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (8)
1. a kind of detection position limiting structure of cold storage plant air door, including support base, air door, drive device and main control chip, institute
State support base to be provided with air port, the air port provided with the air door, the drive device is used to drive the air door to rotate to beat
Open or close and close the air port, it is characterised in that also including closed position detection switch, the closed position detection switch is machinery
Switch, the mechanical switch and main control chip connection, the mechanical switch has limiting section, as the air door is to closing
The rotation of position, the air door can extrude the acting surface of the mechanical switch, and when the air door is completely closed, the air door can
The mechanical switch is triggered, the mechanical switch is sent the first feedback signal to the main control chip, while the limiting section
The air door can be locked；
The mechanical switch is rocker switch, and the limiting section is the acting surface of the rocker switch, as the air door is to pass
The rotation of closed position, the air door can extrude the acting surface of described rocker switch one end, described when the air door is completely closed
The acting surface of rocker switch one end is depressed, and the acting surface of the other end, which is tilted, locks the air door；
Or, the limiting section is the groove being arranged on the mechanical switch acting surface, and the air door is provided with projection, with
The air door is to the rotation of closed position, and the air door can work as institute by the raised acting surface for extruding the mechanical switch
When stating air door and completely closing, it is described it is raised can trigger the mechanical switch, the mechanical switch is sent to the main control chip
First feedback signal, while described raised and described groove coordinates clamping to lock the air door.
2. the detection position limiting structure of cold storage plant air door according to claim 1, it is characterised in that the bottom land of the groove
Connected with notch by cambered surface, the guide groove that the acting surface of the mechanical switch is provided with and the cambered surface is connected.
3. the detection position limiting structure of cold storage plant air door according to claim 1 or 2, it is characterised in that on the air door
Provided with blind hole, described raised one end is connected in the blind hole with the bottom of the blind hole by elastic component.
4. the detection position limiting structure of cold storage plant air door according to claim 1, it is characterised in that also including open position
Detection switch, the open position detection switch and main control chip connection, when the air door is opened completely, the opening
Position detecting switch can send the second feedback signal to the main control chip.
5. the detection position limiting structure of cold storage plant air door according to claim 4, it is characterised in that the open position inspection
Slowdown monitoring switch is mechanical switch, and as the air door is to the rotation of open position, the air door can extrude the work of the mechanical switch
With face, when the air door is opened completely, the air door can trigger the mechanical switch, make the mechanical switch to the master control
Chip sends second feedback signal.
6. the detection position limiting structure of cold storage plant air door according to claim 4, it is characterised in that the open position inspection
Slowdown monitoring switch is inductive switch, and as the air door is to the rotation of open position, the air door can move closer to the inductive switch
Induction zone, when the air door is opened completely, the air door can enter the inductive switch induction zone and trigger the sense
Inductive switch, makes the inductive switch send second feedback signal to the main control chip.
7. a kind of refrigerator, it is characterised in that include the test limit of cold storage plant air door according to any one of claims 1 to 6
Bit architecture.
8. a kind of cold storage plant, it is characterised in that include the inspection of cold storage plant air door according to any one of claims 1 to 6
Survey position limiting structure.
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| CN201510292723.8A CN104896866B (en) | 2015-05-29 | 2015-05-29 | A kind of detection position limiting structure, refrigerator and the cold storage plant of cold storage plant air door |
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| CN201510292723.8A CN104896866B (en) | 2015-05-29 | 2015-05-29 | A kind of detection position limiting structure, refrigerator and the cold storage plant of cold storage plant air door |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112556269B (en) * | 2017-03-08 | 2023-04-11 | 青岛海尔特种电冰柜有限公司 | Horizontal air-cooled refrigerator |
| CN107091551A (en) * | 2017-03-08 | 2017-08-25 | 青岛海尔特种电冰柜有限公司 | Cold storage air-cooled sleeping cabinet |
| CN112556270A (en) * | 2017-03-08 | 2021-03-26 | 青岛海尔特种电冰柜有限公司 | Air-cooled horizontal cabinet |
| CN107238244A (en) * | 2017-06-01 | 2017-10-10 | 青岛海尔特种电冰柜有限公司 | Horizontal type wind-cooling refrigerating cabinet |
| CN107339842A (en) * | 2017-06-01 | 2017-11-10 | 青岛海尔特种电冰柜有限公司 | With air curtain function Horizontal type wind-cooling refrigerator |
| CN107314597A (en) * | 2017-06-01 | 2017-11-03 | 青岛海尔特种电冰柜有限公司 | Horizontal type wind-cooling refrigerator with keepalive feature |
| CN107314598A (en) * | 2017-06-01 | 2017-11-03 | 青岛海尔特种电冰柜有限公司 | Multi-temperature zone Horizontal type wind-cooling refrigerator |
| CN109722851A (en) * | 2019-01-23 | 2019-05-07 | 安徽意华电器有限公司 | A kind of roller washing machine using air dampers |
| CN111623584A (en) * | 2020-05-15 | 2020-09-04 | 海信（山东）冰箱有限公司 | Refrigerator air door resetting method and system, refrigerator and related equipment |
| CN112325545A (en) * | 2020-11-27 | 2021-02-05 | 浙江冰盛制冷科技有限公司 | Air door device for refrigerator |
| CN115682576A (en) * | 2021-07-30 | 2023-02-03 | 青岛海尔电冰箱有限公司 | Air door assembly and refrigeration equipment |
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| WO2001023815A1 (en) * | 1999-09-28 | 2001-04-05 | Arçelik A.Ş. | Memory element controlled damper |
| KR20050072617A (en) * | 2004-01-07 | 2005-07-12 | 삼성전자주식회사 | Refrigerator |
| KR101490184B1 (en) * | 2008-06-23 | 2015-02-05 | 엘지전자 주식회사 | Refrigerator |
| CN102352711B (en) * | 2011-07-28 | 2014-06-18 | 合肥美的电冰箱有限公司 | Door closing structure for refrigerator and refrigerator with door closing structure |
| CN202692363U (en) * | 2012-05-04 | 2013-01-23 | Tcl空调器(中山)有限公司 | Air door control device and fresh air integrated air conditioning equipment |
| CN104296467A (en) * | 2013-07-17 | 2015-01-21 | 苏州三星电子有限公司 | Door-in-door structure of fridge |
| CN103900342B (en) * | 2014-04-04 | 2016-02-24 | 合肥美的电冰箱有限公司 | Air door is closed into level detecting apparatus and refrigerating plant |
| CN104296459B (en) * | 2014-10-21 | 2017-01-25 | 湖北美的电冰箱有限公司 | Air cooling refrigerator air door component and air cooling refrigerator with same |
| CN104329862B (en) * | 2014-11-07 | 2017-02-22 | 合肥美的电冰箱有限公司 | Refrigerator ventilation door and electric refrigerator |
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