CN109813029A - Refrigerator and its defrosting method - Google Patents
Refrigerator and its defrosting method Download PDFInfo
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- CN109813029A CN109813029A CN201910140268.8A CN201910140268A CN109813029A CN 109813029 A CN109813029 A CN 109813029A CN 201910140268 A CN201910140268 A CN 201910140268A CN 109813029 A CN109813029 A CN 109813029A
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Abstract
The invention proposes a kind of refrigerator and its defrosting methods, wherein refrigerator includes: cabinet, inside sets air duct, and air duct includes air outlet and return air inlet；First air door and the second air door, are respectively arranged at air outlet and return air inlet, and the first air door is for opening or closing air outlet, and the second air door is for opening or closing return air inlet；Evaporator and heating member are set in air duct；Wherein, under defrost operating mode, the first air door and the second air door close air outlet and return air inlet, heating member heating, to carry out defrost to evaporator respectively.According to the technical solution of the present invention, effectively enable heating member heat generated heat to be all deposited in without transmitting to refrigerator inside in air duct, heat can be completely used for defrost, improve defrost efficiency, shorten the defrost period；It is also rotated by blower, strengthens the cross-ventilation in air duct, further improve defrost efficiency.
Description
Technical field
The present invention relates to refrigeration technology fields, in particular to a kind of refrigerator and a kind of defrosting method.
Background technique
For refrigerator in refrigeration, evaporator surface temperature leads to evaporator fin far below air dew point in refrigeration (jelly) case
Surface sweating frosting, influences refrigeration effect, when the frost layer knot of evaporator surface is to certain thickness, it is necessary to implement to evaporator
Defrost.
Defrosting method is mainly electric heated defrosting method at present, and in this method, electric heating wire is generally placed inside air duct,
The heat of heater strip easily passes through air duct and is transmitted to box house, causes heating defrost efficiency low, and thermal radiation effect is lower, changes
White effect is poor.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
In view of this, it is an object of the present invention to provide a kind of refrigerators.
It is another object of the present invention to provide a kind of defrosting methods.
To achieve the goals above, the technical solution of first aspect present invention provides a kind of refrigerator, comprising: cabinet, it is interior
If air duct, air duct includes air outlet and return air inlet；First air door and the second air door, are respectively arranged at air outlet and return air inlet, the
One air door is for opening or closing air outlet, and the second air door is for opening or closing return air inlet；Evaporator and heating member, are set to
In air duct；Wherein, under defrost operating mode, the first air door and the second air door close air outlet and return air inlet, heating member respectively
Heating, to carry out defrost to evaporator.
In the technical scheme, refrigerator is closed out under defrost operating mode by the first air door and the second air door respectively
Air port and return air inlet, are closed air duct for a confined space, thus heating member heat caused by heat can all stay
There are, without transmitting to refrigerator inside, heat can be completely used for defrost, improve defrost efficiency in air duct, defrost week is shortened
Phase, and will not influence the temperature in refrigerator, it avoids interior heat up because of defrost of refrigerator body and causes the wind of the food spoilage of storage
Danger.
In the above-mentioned technical solutions, refrigerator further include: blower is set in air duct, and blower is used to accelerate the air in air duct
Convection current.
In the technical scheme, by the way that blower is arranged in air duct, so as to accelerate in air duct by the operating of blower
Cross-ventilation, when allowing to carry out defrost, hot-air can quickly flow, to further promote defrost efficiency, shorten defrost
Period.
It is to be appreciated that the blower in refrigerator can be two, one is only used for the flowing of the quickening hot-air in defrost,
And in addition a blower is set again for accelerating the flow of cold air under refrigeration mode；It can also be in both modes using same
A blower flows to accelerate air.
In the above-mentioned technical solutions, blower is centrifugal blower；Centrifugal blower is fixedly connected with the first air door；Air duct further includes
Air duct cover board, air outlet are set on air duct cover board；One in first air door and air duct cover board can move relative to another, with
The first air door is set to close or open air outlet.
In the technical scheme, centrifugal blower is set by blower, changes the effect of wind direction using centrifugal blower, is conducive to
By the evaporator being arranged in long and narrow air duct freeze cold air out guiding refrigerator body inside；Specifically, in refrigerator,
Air duct is typically disposed in the long and narrow space at cabinet rear portion, and evaporator is located at the bottom in long and narrow air duct, since cold air can generally sink
In bottom；And the accommodation space of refrigerator body is on front side of air duct, the air outlet in air duct is often also to be arranged on air duct top, in this way
Cold air can realize cooling when sinking through most of articles after entering refrigerator body from top, therefore, using centrifugation wind
Machine is conducive to extract the cold air for sinking to air duct bottom down to backward front discharge above air duct, into refrigerator body, mention
Rise the effect that cools.
Further, centrifugal blower is generally closer apart from air outlet, and centrifugal blower and the first air door are fixedly connected on one
Rise, centrifugal blower and the first air door made to be connected jointly with cabinet, be conducive to simplify structure in this way, avoid the first air door and cabinet it
Between connection structure and blower generate interference, influence to blow；One in first air door and air duct cover board can be relative to another
It is mobile, be conducive to the flexibility for promoting air channel structure layout and design.
In the above-mentioned technical solutions, centrifugal blower is set on cabinet by telescopic device, and centrifugal blower passes through telescopic device
Elongation and push the first air door to open air outlet；Centrifugal blower withdraws the first air door by the shortening of telescopic device to close
Close air outlet.
In the technical scheme, centrifugal blower is set on cabinet by telescopic device, so that being fixedly connected with centrifugal blower
The first air door together can be forward extended out with the elongation of telescopic device, be withdrawn with the shortening of telescopic device, into
One step, centrifugal blower is extended by telescopic device pushes the first air door to move forward unlatching air outlet, to make to be centrifuged wind
The wind that machine is sent out can enter the box house of refrigerator from air outlet, be the intracorporal article cooling of case；Shorten in telescopic device
When, the first air door can withdraw and close air door, closing air flue, consequently facilitating carrying out defrost.
In any of the above-described technical solution, heating member is set to the bottom of evaporator.
In the technical scheme, by the way that heating member to be set to the bottom of evaporator, so that the air after heating floats naturally,
The flowing for carrying out air naturally further improves defrost efficiency to be removed to the frost on the evaporator of top,
And such structure is simple, is easily installed.
The technical solution of second aspect of the present invention provides a kind of defrosting method, for any one of above-mentioned first aspect skill
The refrigerator of art scheme, comprising: close the first air door, the air outlet of closing air flue；Close the second air door, the return air of closing air flue
Mouthful；Start heating member heating, to eliminate the frost in air duct on evaporator.
In the technical scheme, by closing the first air door and the second air door, so that the air outlet and return air inlet in air duct are all
It is closed, so that entire air duct forms the space of a sealing, when heating member is heated, heat is all deposited in air duct
Without transmitting to refrigerator inside, heat can be completely used for defrost, improve defrost efficiency, shorten the defrost period, and will not
The temperature in refrigerator is influenced, interior heat up because of defrost of refrigerator body is avoided and causes the risk of the food spoilage of storage.
In the above-mentioned technical solutions, after starting heating member heating, further includes:
Obtain defrost parameter；In the case where defrost parameter meets preset condition, stop heating；Open air duct.
In the technical scheme, by the acquisition of defrost parameter, the progress situation of defrost can be recognized in time, is conducive to
Defrost process is precisely controlled；In the case where defrost parameter meets preset condition, stop heating, can effectively avoid adding
Warmware generates excessive heat, and then the refrigeration for avoiding excessive heat from being transmitted in refrigerator when opening air duct and influence refrigerator is cold
Freeze effect.
In the above-mentioned technical solutions, defrost parameter include the first temperature in air duct, the humidity in air duct, heating member plus
Any one or the combination of several of them in hot duration；Defrost parameter meets preset condition, specifically includes: the first temperature in air duct
More than or equal to preset first temperature；Or the humidity in air duct is more than or equal to default humidity；Or when heating duration more than or equal to presetting
It is long.
It in the technical scheme, include the first temperature in air duct, the humidity in air duct, heating member by defrost parameter
Heat any one or the combination of several of them in duration, these types of parameter detecting is convenient, and it is convenient to calculate, convenient for control defrost into
Degree；The first temperature in air duct is more than or equal to preset first temperature, illustrates that the temperature of heating has reached height, it is sufficient to defrost is completed,
Therefore can stop heating；Humidity in air duct is more than or equal to default humidity, illustrates that the frost born has been translated into moisture and has been dispersed into
In air, so that the air humidity in air duct increases, therefore it can stop heating at this time；In addition, due to the heating function of heating member
Rate is certain, therefore after heating preset duration, the first temperature in air duct can often reach preset first temperature, therefore can be with
When length is more than or equal to preset duration when heated, stop heating.These types of preset condition is all relatively simple, is easy to calculate, can be with
Promote the precision of defrost process control and the convenience of control.
In the above-mentioned technical solutions, blower is equipped in air duct；Before obtaining defrost parameter, further includes: in starting air duct
Blower reinforces the cross-ventilation in air duct.
In the technical scheme, by the way that blower is arranged in air duct, and blower is opened under defrost pattern, wind can be accelerated
Cross-ventilation in road, when allowing to carry out defrost, hot-air can quickly flow, to further promote defrost efficiency, shorten
The defrost period.
In the above-mentioned technical solutions, air duct is opened, is specifically included: starting evaporator refrigeration；Obtain the second temperature in air duct
Degree；In the case where second temperature is less than or equal to preset second temperature, stops freezing and open air duct.
In the technical scheme, first start evaporator refrigeration, until the second temperature in air duct is less than or equal to default second
In the case where temperature, stop freezing and open air duct, in this way, being generated in air duct due to heating defrost before opening air duct
The cold air that heat can be generated by evaporator absorbs, so that the temperature in air duct is reduced, so that after opening air duct, in air duct
It does not have in heat transfer to refrigerator body, the refrigerating of refrigerator is influenced so as to avoid the temperature rising in refrigerator body
Effect.
In any of the above-described technical solution, air duct is opened, is specifically included: opening the first air door, opens air outlet；It opens
Second air door opens return air inlet.
In the technical scheme, by the first air door of opening and the second air door, it is separately turned on air outlet and return air inlet, so that
Air in air duct can be circulated with the air in refrigerator body again, i.e., the air in air duct is blown by air outlet
Into cabinet, and go out to reenter air duct from return air inlet and be cooled down by evaporator, so that being able to maintain in the cabinet of refrigerator
Constant low temperature guarantees refrigerating effect.
In the above-mentioned technical solutions, in the case where blower is equipped in air duct, blower is set to refrigerator case by telescopic device
On body, blower is fixedly connected with the first air door；The first air door is closed, the air outlet of closing air flue specifically includes: telescopic device contracting
It is short, so that blower is withdrawn the first air door, the air outlet of closing air flue；The first air door is opened, air outlet is opened, specifically includes: is flexible
Device elongation, makes blower stretch out the first air door, opens air outlet.
In the technical scheme, blower is set on refrigerator body by telescopic device, so that being fixedly connected on one with blower
The first air door risen can be forward extended out with the elongation of telescopic device, be withdrawn with the shortening of telescopic device, further
Ground is extended by telescopic device in blower and the forward movement of the first air door is pushed to open air outlet, thus the wind for sending out blower
The box house of refrigerator can be entered from air outlet, be the intracorporal article cooling of case；When telescopic device shortens, the first air door
It can withdraw and close air outlet, closing air flue, consequently facilitating carrying out defrost.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the refrigerator of one embodiment of the present of invention；
Fig. 2 is the schematic cross-sectional view of the refrigerator of another embodiment of the invention；
Fig. 3 is the flow diagram of the defrosting method of one embodiment of the present of invention；
Fig. 4 is the flow diagram of the defrosting method of one embodiment of the present of invention；
Fig. 5 is the flow diagram of the defrosting method of one embodiment of the present of invention；
Fig. 6 is the flow diagram of the defrosting method of one embodiment of the present of invention.
Wherein, the corresponding relationship between appended drawing reference and component names of the Fig. 1 into Fig. 6 are as follows:
10 cabinets, 12 air ducts, 120 air outlets, 122 return air inlets, 124 second air doors, 14 evaporators, 16 heating members, 18 wind
Machine, 20 telescopic devices.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
According to some embodiments of the present invention referring to Fig. 1 to Fig. 6 description.
As shown in Figure 1, the refrigerator of the one embodiment proposed according to the present invention, comprising: cabinet 10 inside sets air duct 12, wind
Road 12 includes air outlet 120 and return air inlet 122；First air door (attached drawing is not shown) and the second air door 124, are respectively arranged on air outlet
120 and return air inlet 122 at, the first air door is for opening or closing air outlet 120, and the second air door 124 is for opening or closing back
Air port 122；Evaporator 14 and heating member 16 are set in air duct 12；Wherein, under defrost operating mode, the first air door and
Two air doors 124 close air outlet 120 and return air inlet 122 respectively, and heating member 16 heats, to carry out defrost to evaporator 14.
In this embodiment, refrigerator is closed out under defrost operating mode by the first air door and the second air door 124 respectively
Air port 120 and return air inlet 122 are closed air duct 12 for a confined space, so that heating member 16 heats generated heat
It can all be deposited in air duct 12 without being transmitted to refrigerator inside, heat can be completely used for defrost, defrost efficiency is improved,
The defrost period is shortened, and will not influence the temperature in refrigerator, interior heat up because of defrost of refrigerator body 10 is avoided and causes to store
Food spoilage risk.
Optionally, heating member 16 includes any one in electric heating wire, electric heating coil pipe, infrared heater.
In some embodiments, the first air door is rotatably arranged in air outlet 120, opened in a manner of through rotation or
Close air outlet 120；Or first air door translatablely be set to air outlet 120, opened or closed in a manner of through translation
Air outlet 120；Similarly, the second air door 124 rotatably or translatablely is set to return air inlet 122, is come in a manner of rotating or translating
Open or close return air inlet 122.
In the above-described embodiments, refrigerator further include: blower 18 is set in air duct 12, and blower 18 is for accelerating in air duct 12
Cross-ventilation.
In this embodiment, by the way that blower 18 is arranged in air duct 12, so as to pass through the operating of blower 18, accelerate wind
Cross-ventilation in road 12, when allowing to carry out defrost, hot-air can quickly flow, to further promote defrost efficiency, contract
The short defrost period.
It is to be appreciated that the blower 18 in refrigerator can be two, the stream for being only used for accelerating hot-air in defrost
It is dynamic, and in addition a blower 18 is set again for accelerating the flow of cold air under refrigeration mode；It can also make in both modes
Accelerate air flowing with the same blower 18.
Optionally, blower 18 includes any one in axial flow blower, centrifugal blower, diagonal flow fan.
In the above-described embodiments, blower 18 is centrifugal blower；Centrifugal blower is fixedly connected with the first air door；It also wraps in air duct 12
Air duct cover board is included, air outlet 120 is set on air duct cover board；One in first air door and air duct cover board can be relative to another shifting
It is dynamic, so that the closing of the first air door or unlatching air outlet 120.
In this embodiment, centrifugal blower is set by blower 18, changes the effect of wind direction using centrifugal blower, is conducive to
By the evaporator 14 being arranged in long and narrow air duct 12 freeze cold air out guiding refrigerator body 10 inside；Specifically,
In refrigerator, air duct 12 is typically disposed in the long and narrow space at 10 rear portion of cabinet, and evaporator 14 is located at the bottom in long and narrow air duct 12, due to
Cold air can generally sink to bottom；And the accommodation space of refrigerator body 10 is in the front side of air duct 12, the air outlet 120 in air duct 12 is often
It is also to be arranged on 12 top of air duct, such cold air can be when sinking through most of objects after entering refrigerator body 10 from top
Product realize cooling, therefore, using centrifugal blower, are conducive to extract the cold air for sinking to 12 bottom of air duct down to air duct 12
Discharge in front of Fang Houxiang promotes the effect that cools into refrigerator body 10.
Further, centrifugal blower is generally relatively close apart from air outlet 120, and centrifugal blower and the first air door are fixedly connected on
Together, so that centrifugal blower and the first air door is connected jointly with cabinet 10, be conducive to simplify structure in this way, avoid the first air door and case
Connection structure and blower 18 between body 10 generate interference, influence to blow；First air door can be opposite with one in air duct cover board
In another movement, be conducive to the flexibility for promoting air duct 12 topology layout and design.
Optionally, 18 cover board of blower can be slidably set on refrigerator body 10, with mobile relative to the first air door, thus
Open or close air outlet 120；Or first air door can telescopically be set to refrigerator body 10 on, to open or close air outlet
120, wherein preferably, the first air door can be telescopically set on refrigerator body 10, and such structure is more simple.
As depicted in figs. 1 and 2, in the above-described embodiments, centrifugal blower is set on cabinet 10 by telescopic device 20, specifically
Ground, as shown in Figure 1, centrifugal blower pushes the first air door by the elongation of telescopic device 20 to open air outlet 120；Such as Fig. 2
Shown, centrifugal blower withdraws the first air door by the shortening of telescopic device 20 to close air outlet 120.
In this embodiment, centrifugal blower is set on cabinet 10 by telescopic device 20, so that with the fixed company of centrifugal blower
The first air door being connected together can be forward extended out with the elongation of telescopic device 20, be received with the shortening of telescopic device 20
It returns, further, is moved forward in the first air door by the elongation of telescopic device 20 and open air outlet 120, to make centrifugal blower
The wind of submitting can enter inside the cabinet 10 of refrigerator from air outlet 120, be the article cooling in cabinet 10；In telescopic device
When 20 shortening, the first air door can withdraw and close air door, closing air flue 12, consequently facilitating carrying out defrost.
In any of the above-described embodiment, heating member 16 is set to the bottom of evaporator 14.
In this embodiment, by by heating member 16 be set to evaporator 14 bottom so that heating after air nature on
Floating, i.e., the flowing for carrying out air naturally further improves defrost to be removed to the frost on the evaporator 14 of top
Efficiency, and such structure is simple, is easily installed.
As shown in figure 3, according to the defrosting method of one embodiment of the second aspect of the application proposition, comprising:
Step S100: the first air door, the air outlet of closing air flue are closed；
By closing air flue air outlet, it is no longer flow towards the air in air duct in refrigerator body；
Step S102: the second air door, the return air inlet of closing air flue are closed；
By close return air inlet, be no longer flow towards the air in refrigerator in air duct, thus air duct be closed it is closed for one
Space avoids heat exchange between the two there is no air flowing between air duct and refrigerator body.
Step S104: starting heating member heating, to eliminate the frost in air duct on evaporator.
After the closing of air duct, starting heating member heating, heat is all deposited in without transmitting to refrigerator inside in air duct, heat
Amount can be completely used for defrost, improve defrost efficiency, shorten the defrost period, and will not influence the temperature in refrigerator, avoid
It heats up in refrigerator body because of defrost and causes the risk of the food spoilage of storage.
As shown in figure 4, the defrosting method of another embodiment proposed according to the application, comprising:
Step S200: the first air door, the air outlet of closing air flue are closed；
By closing air flue air outlet, it is no longer flow towards the air in air duct in refrigerator body；
Step S202: the second air door, the return air inlet of closing air flue are closed；
By close return air inlet, be no longer flow towards the air in refrigerator in air duct, thus air duct be closed it is closed for one
Space avoids heat exchange between the two there is no air flowing between air duct and refrigerator body.
Step S204: starting heating member heating, to eliminate the frost in air duct on evaporator；
After the closing of air duct, starting heating member heating, heat is all deposited in without transmitting to refrigerator inside in air duct, heat
Amount can be completely used for defrost, improve defrost efficiency, shorten the defrost period, and will not influence the temperature in refrigerator, avoid
It heats up in refrigerator body because of defrost and causes the risk of the food spoilage of storage.
Step S206: the first temperature in air duct is obtained；
By the acquisition to the first temperature in air duct, the progress situation of defrost can be recognized in time, is conducive to change
White process is precisely controlled.
It is to be appreciated that with the progress of defrost, the first temperature in air duct can be gradually risen, therefore can be by
One temperature detects to control the process of defrost.
Step S208: in the case that the first temperature in air duct is more than or equal to preset first temperature, heating member is closed, is stopped
Only heat；
The first temperature in air duct is more than or equal to preset first temperature, illustrates that the temperature of heating has reached height, it is sufficient to complete
It at defrost, therefore can stop heating, can effectively avoid heating member to generate excessive heat in this way, and then avoid excessive heat
The refrigerating effect of refrigerator is transmitted in refrigerator and influenced when opening air duct.
Step S210: air duct is opened.
After completing defrost, air duct is opened, the evaporator Jing Guo defrost freezes again at this time, and refrigerating efficiency rises, and reduces
Energy consumption.
As shown in figure 5, the defrosting method of another embodiment proposed according to the application, comprising:
Step S300: the first air door, the air outlet of closing air flue are closed；
By closing air flue air outlet, it is no longer flow towards the air in air duct in refrigerator body；
Step S302: the second air door, the return air inlet of closing air flue are closed；
By close return air inlet, be no longer flow towards the air in refrigerator in air duct, thus air duct be closed it is closed for one
Space avoids heat exchange between the two there is no air flowing between air duct and refrigerator body.
Step S304: starting heating member heating, to eliminate the frost in air duct on evaporator；
After the closing of air duct, starting heating member heating, heat is all deposited in without transmitting to refrigerator inside in air duct, heat
Amount can be completely used for defrost, improve defrost efficiency, shorten the defrost period, and will not influence the temperature in refrigerator, avoid
It heats up in refrigerator body because of defrost and causes the risk of the food spoilage of storage.
Step S306: the blower in starting air duct reinforces the cross-ventilation in air duct；
Blower is opened by the way that blower is arranged in air duct, and under defrost pattern, the cross-ventilation in air duct can be accelerated,
When allowing to carry out defrost, hot-air can quickly flow, to further promote defrost efficiency, shorten the defrost period.
Optionally, blower includes axial flow blower, centrifugal blower, any one in diagonal flow fan, preferably centrifugal blower.
Step S308: heating duration is obtained；
Since the heating power of heating member is certain, with the increase of heating duration, the temperature in air duct also can be gradually
Rise, defrosting effect enhancing；By the acquisition to heating duration, the progress situation of defrost can be recognized in time, be conducive to pair
Defrost process is precisely controlled.
Step S310: it is long more than or equal in the case where preset duration when heated, stop heating；
As described above, the first temperature in air duct can often reach preset first temperature after heating preset duration, because
When this can be grown when heated more than or equal to preset duration, stop heating, can effectively avoid heating member to generate so excessive hot
Amount, and then excessive heat is avoided to be transmitted to the refrigerating effect in refrigerator and influencing refrigerator when opening air duct.
Step S312: air duct is opened.
After completing defrost, air duct is opened, the evaporator Jing Guo defrost freezes again at this time, and refrigerating efficiency rises, and reduces
Energy consumption.
Optionally, stopping heating, after opening air duct, blower can stop working, and can continue to rotate and reinforce wind
Air flowing between road and refrigerator body, promotes refrigerating efficiency.
As shown in fig. 6, the defrosting method of another embodiment proposed according to the application, comprising:
Step S400: telescopic device shortens, and blower is made to withdraw the first air door, the air outlet of closing air flue；
In this embodiment, blower is set on refrigerator body by telescopic device, so that being fixed together with blower
The first air door can be forward extended out with the elongation of telescopic device, withdrawn with the shortening of telescopic device, further,
Shortened by telescopic device, the first air door can withdraw and close air outlet, and the air in air duct is made to be no longer flow towards refrigerator body
It is interior.
Step S402: the second air door, the return air inlet of closing air flue are closed；
By close return air inlet, be no longer flow towards the air in refrigerator in air duct, thus air duct be closed it is closed for one
Space avoids heat exchange between the two there is no air flowing between air duct and refrigerator body.
Step S404: starting heating member heating, to eliminate the frost in air duct on evaporator；
After the closing of air duct, starting heating member heating, heat is all deposited in without transmitting to refrigerator inside in air duct, heat
Amount can be completely used for defrost, improve defrost efficiency, shorten the defrost period, and will not influence the temperature in refrigerator, avoid
It heats up in refrigerator body because of defrost and causes the risk of the food spoilage of storage.
Step S406: the blower in starting air duct reinforces the cross-ventilation in air duct；
Blower is opened by the way that blower is arranged in air duct, and under defrost pattern, the cross-ventilation in air duct can be accelerated,
When allowing to carry out defrost, hot-air can quickly flow, to further promote defrost efficiency, shorten the defrost period.
Step S408: heating duration is obtained；
Since the heating power of heating member is certain, with the increase of heating duration, the temperature in air duct also can be gradually
Rise, defrosting effect enhancing；By the acquisition to heating duration, the progress situation of defrost can be recognized in time, be conducive to pair
Defrost process is precisely controlled.
Step S410: it is long when heated to close heating member more than or equal in the case where preset duration, stop heating；
As described above, the first temperature in air duct can often reach preset first temperature after heating preset duration, because
When this can be grown when heated more than or equal to preset duration, stop heating, can effectively avoid heating member to generate so excessive hot
Amount, and then excessive heat is avoided to be transmitted to the refrigerating effect in refrigerator and influencing refrigerator when opening air duct.
Step S412: starting evaporator refrigeration；
Before opening air duct, by start evaporator refrigeration, can by cold air caused by evaporator absorb because
The heat of defrost heating and generation, reduces the temperature in air duct, avoids after opening air duct, the temperature in air duct is higher than refrigerator body
Interior temperature and generate heat exchange, cause the temperature in refrigerator body to rise, avoid temperature in refrigerator body and rise and shadow
Ring the refrigerating effect of refrigerator.
Step S414: the second temperature in air duct is obtained；
By obtaining the second temperature in air duct, convenient for grasping the refrigeration cool-down situation of evaporator, to open wind in time
Road promotes refrigerating efficiency.
Step S416: in the case where second temperature is less than or equal to preset second temperature, stop refrigeration；
In the case where second temperature is less than or equal to preset second temperature, illustrate that the temperature in air duct has already decreased to and ice
Temperature in box body is identical, or lower than the temperature in refrigerator body, no longer has waste heat at this time and is dispersed into refrigerator case
In body, therefore it can stop freezing.
Step S418: telescopic device elongation makes blower push the first air door, opens air outlet；
The forward movement of the first air door is pushed to open air outlet as previously mentioned, blower is extended by telescopic device, to make
The wind that blower is sent out can enter the box house of refrigerator from air outlet,
Step S420: opening the second air door, opens return air inlet.
In this embodiment, by opening the first air door and the second air door, it is separately turned on air outlet and return air inlet, so that wind
Air in road can be circulated with the air in refrigerator body again, i.e., the air in air duct is blowed to by air outlet
In cabinet, and go out to reenter air duct from return air inlet and be cooled down by evaporator, so that being able to maintain perseverance in the cabinet of refrigerator
Fixed low temperature guarantees refrigerating effect.
According to the refrigerator for the specific embodiment that the application proposes, inside set air duct 12, be equipped in air duct 12 evaporator 14,
Blower 18, heater strip (i.e. heating member 16), heater strip (heating member 16) are set to the bottom of evaporator 14.
Specifically, the blower 18 of refrigerator is fixed on cabinet 10 by Telescopic-cylinder bar (i.e. telescopic device 20), on blower 18
It is fixedly connected with the first air door (not shown), the first air door is used to open or close the air outlet 120 in air duct 12；Air duct 12 is returned
The second air door 124 is provided at air port 122, the second air door 124 is for opening or closing return air inlet 122.
In normal refrigeration cycle, 18 function of blower is consistent with common blower, i.e. evaporator 14 is freezed in the rotation of blower 18
The cold wind of generation is blown into cabinet 10 by air outlet 120；During defrost, blower 18 by Telescopic-cylinder bar by being driven, in turn
The first air door is pushed, air outlet 120 is closed, while lower part return air inlet 122 is closed by the second air door 124, so that in air duct 12
An enclosure space is formed, then the heater strip (heating member 16) set on 14 bottom of evaporator is begun to warm up, while blower 18 is transported
Turn, reinforce thermal convection, optimizes defrost process.
According to the refrigerator of the above-mentioned specific embodiment of the application, heating defrost is carried out by closing air flue, avoids heat
It scatters and disappears, improves defrost efficiency；It is rotated by blower, strengthens the cross-ventilation in air duct, further improve defrost effect
Rate.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, according to the technical solution of the present invention, effectively makes
Heating member heats generated heat and can all be deposited in air duct without transmitting to refrigerator inside, and heat can be completely used for
Defrost improves defrost efficiency, shortens the defrost period；It is also rotated by blower, the cross-ventilation in air duct is strengthened, into one
Improve defrost efficiency to step.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as indicating
Or imply relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " installation ",
The terms such as " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, being also possible to can
Dismantling connection, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In description of the invention, it is to be understood that the instructions such as term " on ", "lower", "left", "right", "front", "rear"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or unit of indication or suggestion meaning must have specific direction, be constructed and operated in a specific orientation,
It is thus impossible to be interpreted as limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of refrigerator characterized by comprising
Cabinet, inside sets air duct, and the air duct includes air outlet and return air inlet；
First air door and the second air door are respectively arranged at the air outlet and the return air inlet, and first air door is for opening
Or the air outlet is closed, second air door is for opening or closing the return air inlet；
Evaporator and heating member are set in the air duct；
Wherein, under defrost operating mode, first air door and second air door close the air outlet and described respectively
Return air inlet, the heating member heating, to carry out defrost to the evaporator.
2. refrigerator according to claim 1, which is characterized in that further include:
Blower is set in the air duct, and the blower is used to accelerate the cross-ventilation in the air duct.
3. refrigerator according to claim 2, which is characterized in that
The blower is centrifugal blower；
The centrifugal blower is fixedly connected with first air door；
The air duct further includes air duct cover board, and the air outlet is set on the air duct cover board；
One in first air door and the air duct cover board can be relative to another movement, so that first air door is closed
Or open the air outlet.
4. refrigerator according to claim 3, which is characterized in that
The centrifugal blower is set on the cabinet by telescopic device, the elongation that the centrifugal blower passes through the telescopic device
And push first air door to open the air outlet；The centrifugal blower withdraws institute by the shortening of the telescopic device
The first air door is stated to close the air outlet.
5. refrigerator described in any one of -4 according to claim 1, which is characterized in that
The heating member is set to the bottom of the evaporator.
6. a kind of defrosting method is used for refrigerator of any of claims 1-5 characterized by comprising
Close the first air door, the air outlet of closing air flue；
The second air door is closed, the return air inlet in the air duct is closed；
Start heating member heating, to eliminate the frost in the air duct on evaporator.
7. defrosting method according to claim 6, which is characterized in that
After starting heating member heating, further includes:
Obtain defrost parameter；
In the case where the defrost parameter meets preset condition, stop heating；
Open the air duct.
8. defrosting method according to claim 7, which is characterized in that
The defrost parameter include the first temperature in the air duct, the humidity in the air duct, the heating member heating when
Any one or the combination of several of them in length；
The defrost parameter meets preset condition, specifically includes:
The first temperature in the air duct is more than or equal to preset first temperature；Or
Humidity in the air duct is more than or equal to default humidity；Or
The heating duration is more than or equal to preset duration.
9. defrosting method according to claim 7, which is characterized in that
Blower is equipped in the air duct；
Before the acquisition defrost parameter, further includes:
Start the blower in the air duct, reinforces the cross-ventilation in the air duct.
10. defrosting method according to claim 7, which is characterized in that
It is described to open the air duct, it specifically includes:
Start the evaporator refrigeration；
Obtain the second temperature in air duct；
In the case where the second temperature is less than or equal to preset second temperature, stops freezing and open the air duct.
11. the defrosting method according to any one of claim 7-10, which is characterized in that
It is described to open the air duct, it specifically includes:
First air door is opened, the air outlet is opened；
Second air door is opened, the return air inlet is opened.
12. defrosting method according to claim 11, which is characterized in that
In the case where being equipped with blower in the air duct, the blower is set on refrigerator body by telescopic device, the blower
It is fixedly connected with first air door；
The first air door of the closing, closes the air outlet in the air duct, specifically includes:
The telescopic device shortens, and so that the blower is withdrawn first air door, closes the air outlet in the air duct；
It is described to open first air door, the air outlet is opened, is specifically included:
The telescopic device elongation, makes the blower stretch out first air door, opens the air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910140268.8A CN109813029B (en) | 2019-02-26 | 2019-02-26 | Refrigerator and defrosting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910140268.8A CN109813029B (en) | 2019-02-26 | 2019-02-26 | Refrigerator and defrosting method thereof |
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| CN109813029A true CN109813029A (en) | 2019-05-28 |
| CN109813029B CN109813029B (en) | 2021-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110274423A (en) * | 2019-06-04 | 2019-09-24 | 合肥美的电冰箱有限公司 | Refrigeration equipment |
| CN114812051A (en) * | 2022-05-25 | 2022-07-29 | 珠海格力电器股份有限公司 | Refrigerator and defrosting control method of evaporator thereof |
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| Publication number | Publication date |
|---|---|
| CN109813029B (en) | 2021-06-29 |
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