CN104879996B - A kind of detection position limiting structure of cold storage plant air door - Google Patents
A kind of detection position limiting structure of cold storage plant air door Download PDFInfo
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- CN104879996B CN104879996B CN201510290063.XA CN201510290063A CN104879996B CN 104879996 B CN104879996 B CN 104879996B CN 201510290063 A CN201510290063 A CN 201510290063A CN 104879996 B CN104879996 B CN 104879996B
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Abstract
The invention discloses a kind of detection position limiting structure of cold storage plant air door, be related to cold storage plant technical field, for solve in the prior art cannot by throttle condition signal feed back to main control chip and air door be not closed completely it is real caused by between the unmanageable problem of indoor temperature and 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 to open or close air port, also include closed position detection switch and stopping means, closed position detection switch and main control chip are connected, as air door is to the rotation of closed position, air door can move closer to closed position detection switch, when air door is completely closed, air door can trigger closed position detection switch, turn off position detecting switch and send the first feedback signal to main control chip, stopping means can lock air door simultaneously.The present invention is used to distribute cold to each compartment.
Description
Technical field
The present invention relates to cold storage plant technical field, more particularly to a kind of detection position limiting structure of cold storage plant air door.
Background technology
Air door is electronic load important in cold storage plant, for carrying out cold distribution to each compartment.When an interior
When temperature is higher than design temperature, drive device drives air door to open, and the cold that evaporator is produced is entered the compartment by air door,
So that the temperature reduction of this interior；When the temperature of an interior is less than design temperature, drive device drives air door to close, and makes
The cold that evaporator is produced stops entering the compartment, so as to prevent the temperature of this interior 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 treatment, indoor temperature is difficult between causing
Control.In addition, after drive device drives air door to completely close, drive device stops, reaction force and flowing cold are being driven
Impetus under, air door can turn an angle to the direction opened, and 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 of cold storage plant air door, it is possible to resolve work as wind in the prior art
Door breaks down when being unable to completely close, it is impossible to throttle condition signal is fed back into main control chip, to carry out fault restoration or place
Reason, and air door be not closed completely it is real caused by between the indoor unmanageable problem of temperature.
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 is opened or closed, also including closed position detection switch and stopping means, the closed position detection switch and institute
Main control chip connection is stated, as the air door is to the rotation of closed position, the air door can move closer to the closed position inspection
Slowdown monitoring switch, when the air door is completely closed, the air door can trigger the closed position detection switch, make the closed position
Detection switch sends the first feedback signal to the main control chip, while the stopping means can lock the air door.
The detection position limiting structure of cold storage plant air door provided in an embodiment of the present invention, opens due to setting closed position detection
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 treatment, when damper faults cannot 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 the indoor unmanageable problem of temperature between avoiding occurs, further, since setting spacing dress
Put, when air door is completely closed, stopping means can lock air door, prevent air door from being rotated to the direction opened, it is ensured that air door is fixed
Position in completely closed state, so as to avoid be not closed completely because of air door caused by between the unmanageable problem of indoor temperature occur.
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
The accompanying drawing to be used needed for having technology description is 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.
Fig. 1 is the schematic diagram when detection position limiting structure apoplexy door of embodiment of the present invention cold storage plant air door is opened；
Fig. 2 is the schematic diagram when detection position limiting structure apoplexy door of embodiment of the present invention cold storage plant air door is closed；
Fig. 3 is the schematic diagram of limiting section in the detection position limiting structure of embodiment of the present invention cold storage plant air door；
The signal that Fig. 4 cooperates for the detection position limiting structure protrusions and groove of embodiment of the present invention cold storage plant air door
Figure；
Fig. 5 in the detection position limiting structure of the embodiment of the present invention cold storage plant air door magnetic part and the first adsorption piece mutually inhale
The schematic diagram of conjunction.
Specific 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 ", D score, "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " are based on shown in the drawings
Orientation or position relationship, are for only for ease of the description present invention and simplify and describe, rather than indicate or imply signified device or
Element with specific orientation, with specific azimuth configuration and operation, therefore must 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 connects with refrigerating chamber by freezing air channel, the back of the body of refrigerating chamber
Portion is provided with refrigeration air channel, and refrigeration air channel connects with refrigerating chamber, is connected by blast pipe between refrigeration air channel and freezing air channel, 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
Air door is put, air door and drive device are connected, evaporator and fan, the cold that fan can produce evaporator are provided with evaporator storehouse
Refrigerating chamber is delivered to by freezing air channel, while be delivered at air door by blast pipe, when the temperature in refrigerating chamber is higher than start
During temperature, drive device drives air door to open, 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 drives air door to close, and makes 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 embodiment of the present invention cold storage plant air door
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 is provided with air port 11, and air door 2 is provided with air port 11, and the drive device is used to drive
Air door 2 is rotated to open or close air port 11, and also including closed position detection switch 3 and stopping means 4, 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, to carry out failure autonomous so as to restart by drive device or adjust the modes such as heater working condition
Repair and process, when the failure of air door 2 cannot 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 the indoor unmanageable problem of temperature between avoiding occurs, further, since setting limit
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 opened, and protect
Card air door 2 be positioned at completely closed state, so as to avoid because air door 2 be not closed completely caused by between indoor temperature it is unmanageable
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 for collecting
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 becomes the big electric current caused in drive device running and also increases, and the current value for collecting 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 the 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 breaks down to be unable to completely close, that is, represent 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.
Reference picture 1, the support base 1 in 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 that rectangular recess 12 is vertical with rotary shaft 21, as shown in Figures 1 and 2, closed position detection switch 3 may also set up in
Rectangular recess 12 is parallel with rotary shaft 21 and side wall away from rotary shaft 21 or is arranged at the bottom surface of 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, and as air door 2 is to the rotation of open position, air door 2 gradually divides with the acting surface of 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 accuracy of detection high, and the price of mechanical switch is relatively low, makes being manufactured into for 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, and such as Hall switch, now, air door is provided with magnetic part, with
Rotation of the air door to closed position, the magnetic part on 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.The Hall switch spy such as have contactless, low-power consumption, long life, response frequency high
Point, so as to improve the service life of the detection position limiting structure of cold storage plant air door, 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 sends 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
The object of the materials such as detection glass, plastics, woodwork, detection range is wider.
Reference picture 2, the stopping means 4 in 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 can cooperate and lock 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 from groove.Air door 2 is locked by the engaging of groove and projection, is prevented
The direction that air door 2 is opened under the impetus of flowing cold to air door 2 rotates, it is ensured that air door 2 is positioned at completely closed state,
So as to avoid be not closed completely because of air door 2 caused by between the unmanageable problem of indoor temperature occur.
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.
Projection is skidded off from groove for convenience, and 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 in groove along cambered surface, and when air door 2 is completely closed, projection is sliding
To groove, engage with groove, it is raised when drive device drives air door 2 to be rotated to open position so as to air door 2 be locked
Can be skidded off from groove along cambered surface, it is convex so as to facilitate because the setting of cambered surface makes the bottom land of groove and notch connection smoother
Rise and skidded off from groove.
To ensure when air door 2 is completely closed, projection can set along cambered surface slide into grooves on the support base 1 in the present embodiment
There is the gathering sill connected with the cambered surface, thus, as air door 2 is to the rotation of closed position, projection can be from the entrance of gathering sill
Into gathering sill, and cambered surface, and then slide into grooves are slided to along gathering sill, so as to ensure that projection can when air door is completely closed
Along cambered surface slide into grooves.
When air door is completely closed, in order to ensure the engaging of raised and groove, when air door is opened, projection is along arc for convenience
Face skids off from 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 inconsistent with support base 1 under the elastic force effect of elastic component, as air door 2 is to pass
The rotation of closed position, projection can move closer to groove, and when air door 2 is completely closed, 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 hole wall along blind hole slides to blind via bottom direction, so that
Make elastic component produce deformation, and then facilitate projection skidded off from groove along cambered surface.
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 and the mutual adhesive of the second adsorption piece are locking
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 to open position rotate.Air door 2 is locked with the second adsorption piece mutual adhesive by the first adsorption piece,
The direction for preventing air door 2 from being opened to air door 2 under the impetus of flowing cold rotates, it is ensured that air door 2 is positioned at and completely closes
State, so as to avoid be not closed completely because of air door 2 caused by between the indoor unmanageable problem of temperature occur.
The first above-mentioned adsorption piece can be magnet, or by the electromagnet that is formed after iron core winding hot-wire coil,
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 be magnet, or by iron core winding hot-wire coil after
The electromagnet of formation, when air door is completely closed, can be by magnet or the material and magnet or electromagnetism iron phase of electromagnet magnetic absorption
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 specifically described for electromagnet：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 near 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.During air door 2 is opened, by giving
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 of sucker and air door
Vacuum is produced between surface, so that air door is locked air door by sucker suction, when needing air door to open, vacuum generator
Can be inflated between the adsorption plane of sucker and damper surface, 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, the direction for preventing air door from being opened to air door under the impetus of flowing cold rotates, it is ensured that air door is positioned at and closes completely
Closed state, so as to avoid be not closed completely because of air door caused by between the indoor unmanageable problem of temperature occur.
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, also including open position detection switch 5, open position detection switch 5 and the main control chip are connected, 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 breaks down can not 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, so as to restart by drive device or adjust heater working condition carry out failure certainly
Major in multiple and process, when damper faults cannot 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 the indoor unmanageable problem of temperature occur.
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 rotary shaft 21, parallel and close to the side wall of rotary shaft 21, are open position detection switch 5 shown in Fig. 1 and Fig. 2
Located at the side wall that rectangular recess 12 is vertical with rotary shaft 21, when air door 2 is opened completely, air door 2 can trigger and be 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, air door 2 can be with the acting surface of mechanical switch
Separate, 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, and such as Hall switch, now, air door is provided with magnetic part, with
Rotation of the air door to open position, the magnetic part on 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.The Hall switch spy such as have contactless, low-power consumption, long life, response frequency high
Point, so as to improve the service life of the detection position limiting structure of cold storage plant air door, 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 sends 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
The object of the materials such as detection glass, plastics, 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 action as desired, when driving air door to close or open, angle that air door is turned over is missed
Difference very little, and this error not long term accumulation, so as to ensure that when stepper motor stops, air door has been opened or complete completely
Close.
For guarantee air door 2 can be opened completely or be completely closed, the main control chip and the drive device are connected, described
Main control chip can receive first feedback signal that closed position detection switch 3 sends and open position detection switch 5 sends
Second feedback signal, and control the drive device to close.When needing air door 2 to open, main control chip control drives
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 is opened, and makes drive device drive air door 2 to be rotated to closed position, when air door 2 is completely closed, is closed
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 air door 2 and opens completely, 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 in the front driving device opening completely or completely close so as to avoid air door 2, so prevent air door 2 close less than
Position caused by evaporator produce cold by gap between air door 2 and support base 1 enter compartment after, between causing interior temperature
Unmanageable problem.
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 to act under some specific structures, tied such that it is able to reach to save parts or make
The purpose of structure, illustrates below by way of two embodiments：
Embodiment one：
Reference picture 1 and Fig. 3, the detection position limiting structure of the cold storage plant air door in 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, are provided with air port 11
Air door 2, the drive device is used to drive air door 2 to rotate to open or close air port 11, also including 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 the main control chip are connected, and 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, to carry out failure autonomous so as to restart by drive device or adjust the modes such as heater working condition
Repair and process, when damper faults cannot be repaired independently, then damper faults code is shown by display board, facilitate technical staff
Cold storage plant is repaired, and then the indoor unmanageable problem of temperature between avoiding occurs, 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 opened, it is ensured that air door 2 is positioned at completely closed state, so as to avoid because of air door
The unmanageable problem of indoor temperature occurs 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, by air door locking, the rear surface of air door described here for air door close when, wind
It is parallel with the plane where air port and away from the plane in the air port on door.This structure make use of the special construction reality of rocker switch
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 raised 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, raised 22 can trigger the mechanical switch, make the mechanical switch to the master control
Chip sends first feedback signal, while air door 2 is locked in projection 22 and groove fit clamping.By raised 22 and groove
Cooperation clamping air door 2 is locked, prevent air door 2 flowing cold impetus under to air door open direction rotate, protect
Card air door 2 be positioned at completely closed state, so as to avoid because air door be not closed completely caused by between indoor temperature it is unmanageable
Problem occurs.When needing to open air door 2, drive device drives air door 2 to be rotated to open position so that raised 22 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, while
Air door is locked in raised and groove fit clamping.
Reference picture 4, raised 22 is skidded off from groove for convenience, and the bottom land and notch of the groove are connected by cambered surface 32
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 in groove, and when air door 2 is completely closed, raised 22 slide in groove, and groove fit clamping, so as to by air door
2 lockings, when drive device drives air door 2 to be rotated to open position, raised 22 can skid off along cambered surface 32 from groove, due to arc
The setting in face 32 makes the bottom land of groove and notch connection smoother, is skidded off from groove so as to facilitate projection.
Reference picture 4, can be along the slide into grooves of cambered surface 32, in the present embodiment to ensure when air door 2 is completely closed, raised 22
The acting surface of mechanical switch is provided with the gathering sill 33 being connected with cambered surface 32, thus, with the turning to air door closed position of air door 2
Dynamic, raised 22 can enter gathering sill 33 from the entrance of gathering sill 33, and slide to cambered surface 32, and then slide into grooves along gathering sill 33,
Can be along the slide into grooves of cambered surface 32 so as to ensure that when air door 2 is completely closed, raised 22.
When needing air door 2 to open, reference picture 4 raised 22 is skidded off, the present embodiment along cambered surface 32 from groove for convenience
Middle air door 2 is provided with blind hole 23, and raised 22 one end is connected with the bottom of blind hole 23 in blind hole 23 by elastic component 24
Connect, in the presence of drive device, air door 2 is rotated to open position, when raised 22 slide in cambered surface 32, raised 22 can extrude
Elastic component 24, and hole wall along blind hole 23 slides to the bottom direction of blind hole 23, so that elastic component 24 produces deformation, so that it is convenient
Raised 22 skid off along cambered surface 32 from groove.
Embodiment two：
Reference picture 1, Fig. 2 and Fig. 5, the detection position limiting structure of the cold storage plant air door in 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, at air port 11
Air door 2 is provided with, drive device is used to drive air door 2 to rotate to open or close air port 11, also including closed position detection switch 3
With magnetic part 421, closed position detection switch 3 is magnetic induction switch, and the magnetic induction switch and the main control chip are connected, magnetic
Property part 421 on the air door 2, support base 1 include can with the first adsorption piece 411 of 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, to carry out failure autonomous so as to restart by drive device or adjust the modes such as heater working condition
Repair and process, when the failure of air door 2 cannot 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 the indoor unmanageable problem of temperature between avoiding occurs, in addition, when air door 2 is complete
During contract fully, air door 2 is locked in the mutual adhesive of 421 and first adsorption piece of magnetic part 411, can prevent air door 2 to the direction opened
Rotate, it is ensured that air door 2 is positioned at completely closed state, so as to avoid be not closed completely because of air door 2 caused by between indoor temperature it is difficult
Occur with the problem for controlling.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 the electromagnet by being formed after iron core winding hot-wire coil.
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 is powered off during air door 2 is opened by electromagnet, makes electromagnet and the first adsorption piece 411
Between attraction eliminate, so as to facilitate drive device drive 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, and when needing air door 2 to close, 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 of the electromagnet and magnetic part 421 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, makes
Electromagnet after energization is identical with the polarity of magnetic part near 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 main control chip in advance by program, within this time period, inductive switch
The magnetic for sensing, but not sending signal, 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 is powered during air door 2 is opened by electromagnet, makes between magnetic part 421 and electromagnet
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, 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 with 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 conversely, 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, and when air door 2 is completely closed, 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
When switch 5 detects air door 2 and opens completely, 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 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 for completely closing is closed, and then prevent the cold that air door 2 closes caused evaporator generation not in place from passing through
After gap enters compartment between air door 2 and support base 1, the indoor unmanageable problem of temperature 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, closes
Closed position detection switch 3 can send the first feedback signal to main control chip, therefore, it is 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
The modes such as heater working condition are restarted or adjusted by drive device carries out failure independently reparation and treatment, when the failure of air door 2
When cannot independently repair, then the failure code of air door 2 is shown by display board, facilitate technical staff to repair refrigerator, and then
The unmanageable problem of indoor temperature occurs 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 opened, it is ensured that air door 2 is positioned at and completely closes shape
State, so as to avoid be not closed completely because of air door 2 caused by between the unmanageable problem of indoor temperature occur.
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 treatment are carried out so as to the modes such as heater working condition are restarted or adjusted by drive device, when air door 2
When failure cannot 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 the indoor unmanageable problem of temperature between avoiding occurs, 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 opened, it is ensured that air door 2 is positioned at completely
Closed mode, so as to avoid be not closed completely because of air door 2 caused by between the unmanageable problem of indoor temperature occur.
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 above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
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 (3)
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 and be provided with air port, the air door is provided with the air port, 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 has limit
Position portion, the closed position detection switch is mechanical switch, and the closed position detection switch and the main control chip are connected, with
Rotation of the air door to closed position, the air door can extrude the acting surface of the mechanical switch, when the air door is complete
During closing, the air door can trigger the closed position detection switch, make the closed position detection switch to the master control core
Piece sends the first feedback signal, while the limiting section can lock the air door；
The limiting section is the groove being arranged on the mechanical switch acting surface, and the air door is provided with projection, with described
Rotation from air door to closed position, the air door can be by the raised acting surface for extruding the mechanical switch, when the wind
When door is completely closed, the raised triggerable mechanical switch makes the mechanical switch send described to the main control chip
First feedback signal, while the air door is locked in the clamping of described raised and described groove fit.
2. 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 the main control chip are connected, as the air door is to the rotation of open position,
The air door can move closer to the open position detection switch, and when the air door is opened completely, the air door can trigger institute
Open position detection switch is stated, the open position detection switch is sent the second feedback signal to the main control chip.
3. the detection position limiting structure of cold storage plant air door according to claim 2, it is characterised in that the open position inspection
Slowdown monitoring switch is mechanical switch or inductive switch.
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| CN201510290063.XA CN104879996B (en) | 2015-05-29 | 2015-05-29 | A kind of detection position limiting structure of cold storage plant air door |
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| CN201510290063.XA CN104879996B (en) | 2015-05-29 | 2015-05-29 | A kind of detection position limiting structure of cold storage plant air door |
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| CN104896867B (en) * | 2015-05-29 | 2017-10-03 | 海信容声(广东)冰箱有限公司 | A kind of detection position limiting structure, cold storage plant and the control method of cold storage plant air door |
| CN109312952B (en) * | 2016-06-21 | 2021-05-07 | 三菱电机株式会社 | Open-close cover detection device |
| CN107543467A (en) * | 2016-06-23 | 2018-01-05 | 上海瓦姆石油天然气管业有限公司 | Overturning chuck precision testing device with automatic absorbing function |
| CN106440620B (en) * | 2016-09-30 | 2019-03-12 | 青岛海尔股份有限公司 | A kind of ducting assembly and the refrigerator with it |
| CN106440621B (en) * | 2016-09-30 | 2019-03-12 | 青岛海尔股份有限公司 | Refrigerator |
| CN107314592A (en) * | 2017-06-01 | 2017-11-03 | 青岛海尔特种电冰柜有限公司 | Moisturizing Horizontal type wind-cooling refrigerator |
| CN107642930A (en) * | 2017-06-01 | 2018-01-30 | 青岛海尔特种电冰柜有限公司 | Low humidity Horizontal type wind-cooling refrigerator |
| CN107120891A (en) * | 2017-06-01 | 2017-09-01 | 青岛海尔特种电冰柜有限公司 | Horizontal refrigerator with four sides air blowing function |
| CN107091552A (en) * | 2017-06-01 | 2017-08-25 | 青岛海尔特种电冰柜有限公司 | Horizontal refrigerating cabinet |
| CN107525333B (en) * | 2017-07-28 | 2019-12-20 | 合肥美的电冰箱有限公司 | Air duct assembly and refrigerator with same |
| CN110260587A (en) * | 2019-05-16 | 2019-09-20 | 澳柯玛股份有限公司 | A kind of electric flap feedback control system |
| 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 |
| CN116271165A (en) * | 2023-02-23 | 2023-06-23 | 北京市门头沟区医院 | Sterilizer for heart coronary artery operation |
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| JP2780219B2 (en) * | 1994-11-29 | 1998-07-30 | 株式会社ミヤマエ | Refrigerator damper |
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