CN109425168A - Refrigerating appliance and its control method - Google Patents
Refrigerating appliance and its control method Download PDFInfo
- Publication number
- CN109425168A CN109425168A CN201710784619.XA CN201710784619A CN109425168A CN 109425168 A CN109425168 A CN 109425168A CN 201710784619 A CN201710784619 A CN 201710784619A CN 109425168 A CN109425168 A CN 109425168A
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- Prior art keywords
- evaporator
- humidity
- defrost
- refrigerating appliance
- humidity sensor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/067—Evaporator fan units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
- F25B2347/023—Set point defrosting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/02—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/10—Sensors measuring the temperature of the evaporator
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention provides a kind of refrigerating appliances, comprising: the storeroom for stored goods；The evaporator room that can be connected to the storeroom, the evaporator for cooling wind are set in the evaporator room；It can be circulated between the storeroom and evaporator room by the wind that the evaporator cools down；For detecting the humidity sensor of the humidity of wind；On wind flow direction, the humidity sensor is set to the downstream position of the evaporator.Humidity to obtain according to the detection carries out other controls, such as determines the time point for more accurately starting evaporator defrost based on obtained humidity or its variation is detected, and improves the efficiency of evaporator defrost.In addition, the invention also provides a kind of control methods of above-mentioned refrigerating appliance.
Description
Technical field
The present invention relates to refrigeration technology fields, in particular to domestic refrigerator and its control method.
Background technique
Domestic refrigerator in use, the inevitably frosting on the evaporator of refrigerating chamber and freezing chamber, thus need
Periodically to start the heater of installation on an evaporator to defrost to evaporator, and defrosting water is discharged by drainage pipeline.Phase
Ying Di, the operation control of refrigerator include that the refrigeration cycle freezed to storeroom and the defrost to defrost to evaporator recycle.
Defrosting control commonly timing defrost in frost-free refrigerator, timing defrost be possible to evaporator surface frosting very
Refrigerator begins to defrost when few, this will cause the waste of the energy.In addition, the above method further disadvantage is that in wet season, use
Family door opening times, which increase, has had accumulated many frosts on evaporator, but does not arrive the regulation defrost time, and refrigerator does not have started defrost, this is just
The refrigeration performance of refrigerator can be seriously affected.In order to overcome the defect of timing defrost, some improved defrosting control methods are bases
Refrigerator conduction time, compressor operating time, door opening times, environment temperature etc. are because usually controlling defrost.These defrosting control sides
Although method improves the efficiency of defrost to a certain extent, there are many factor considered, and programmed logic is complicated.
Summary of the invention
How accurately problems solved by the invention is timely defrost in refrigerator operational process.
To solve the above problems, on the one hand, the present invention provides a kind of refrigerating appliances, comprising: the storage for stored goods
Hide room；The evaporator room that can be connected to the storeroom, the evaporator for cooling wind are set in the evaporator room；It is described
The cooling wind of evaporator can circulate between the storeroom and evaporator room；For detecting the humidity sensor of the humidity of wind
Device；On wind flow direction, the humidity sensor is set to the downstream position of the evaporator.
The humidity of the wind refers to the humidity of the wind circulated between storeroom and evaporator.
By the way that humidity sensor is arranged with the humidity of the wind after detection stream pervaporation device in the downstream position of evaporator, thus
The humidity obtained according to the detection carries out other controls, such as determining more accurate based on obtained humidity or its variation is detected
Beginning evaporator defrost time point, improve evaporator defrost efficiency.
As a further improvement of the present invention, which further includes the control list connecting with the humidity sensor
Member, the beginning of evaporator defrost described in the humid control that described control unit is detected based on the humidity sensor.
The humidity or humidity variation of downstream position based on detection evaporator, can more directly and accurately judge evaporator
Frosting situation, it is more accurate to control time point for starting of evaporator defrost.So as to avoid unnecessary defrost, energy is saved
Source；Also it can start in time defrost in the case where there is defrost demand, improve the working efficiency of refrigeration system.In addition, based on wet
It spends this single factors and controls the starting of defrost, it is simpler in control logic.
It as a further improvement of the present invention, further include temperature sensor for detecting the temperature of the evaporator, institute
State the end that control unit controls the evaporator defrost based on the temperature that the temperature sensor detects.
As a further improvement of the present invention, described control unit is configured to: being reached when the lasting defrost time of evaporator
When to preset time, described control unit controls the defrost for terminating the evaporator.
As a further improvement of the present invention, the humidity sensor is disposed proximate to the downstream position of the evaporator.
Close to evaporator downstream position refer to the wind energy across evaporator in time by humidity sensor position detected,
Decaying is not had started in the humidity of the wind of this position or is disturbed, and can really reflect the humidity of wind when just passing through evaporator.
The humidity of wind based on this position can directly and accurately judge the frosting degree of evaporator, so as to accurately determine that defrost is opened
The time point of beginning.
As a further improvement of the present invention, the humidity sensor is set on the wall of the evaporator room.
As a further improvement of the present invention, the humidity sensor is set to the air outlet position of the evaporator room.
The air outlet of so-called evaporator room refers to the outlet that evaporator room is connected to other air ducts or ducting part, air duct packet
Refrigerating chamber air duct or freezing chamber air duct are included, ducting part includes air door etc..
So-called evaporator room refers to the room that standalone configuration comes out in air path system, with air inlet or outlet air
Mouthful；Or referring to a part as air duct in air path system, air outlet can be configured for air duct and be connected to storeroom at this time
Air outlet.
As a further improvement of the present invention, further include for agitate wind recycle fan, on the flow direction of wind, should
Fan is set to the downstream position of the evaporator；The humidity sensor is set between the evaporator and the fan
Position or the humidity sensor are set to the downstream position of the fan and close to the fan or the humidity sensors
Device is set on the fan.
As a further improvement of the present invention, the fan is set to the downstream position of the evaporator and close to the steaming
Send out device.
Another aspect of the present invention is to provide a kind of control method of refrigerating appliance, wherein the refrigerating appliance includes: use
In the storeroom of stored goods；The evaporator room that can be connected to the storeroom, the evaporator for cooling wind are set to the steaming
It sends out in device room；It can be circulated between the storeroom and evaporator room by the wind that the evaporator cools down；For detecting wind
Humidity humidity sensor；The control method includes the following steps: the humid control institute detected based on the humidity sensor
State the beginning of evaporator defrost.
As a further improvement of the present invention, which includes the following steps: to detect based on the humidity sensor
The variation of humidity control the beginning of the evaporator defrost.
As a further improvement of the present invention, wherein the refrigerating appliance includes: the temperature for detecting the evaporator
Temperature sensor include；The control method following steps: the temperature based on temperature sensor detection controls the evaporation
The end of device defrost.
As a further improvement of the present invention, which includes the following steps: the lasting defrost time when evaporator
When reaching preset time, described control unit controls the defrost for terminating the evaporator.
As a further improvement of the present invention, on wind flow direction, the humidity sensor is for detecting the evaporation
The humidity of the wind of the downstream position of device.
As a further improvement of the present invention, described in the variation control of the humidity based on humidity sensor detection
Starting for evaporator defrost further includes following steps:
The humidity sensor in the second preset time period t2 after being terminated based on defrost primary on the evaporator
The comparison result of the default humidity value H1 of the humidity average value H2 of detection and one and the beginning for controlling evaporator defrost next time.
So-called humidity average value refers to equably detects several humidity values in the second preset time period, then asks this several
The average value of humidity value.
As a further improvement of the present invention, the default humidity value H1 is to be next to the evaporator last time defrost knot
The humidity average value or initial default of the humidity sensor detection in the first preset time period t1 after beam.
If the humidity average value in so-called first preset time period is equably to detect dry and wet in the first preset time period
Then angle value seeks the average value of several humidity values.So at this time the default humidity value be can with the different defrost periods and
Change.
So-called initial default refers to preset fixed value when refrigerator factory.
As a further improvement of the present invention, the start time point of the second time period t2 with the time passage backward
And far from the time point at the end of the evaporator last time defrost.
As a further improvement of the present invention, the humidity average value H2 with the time backward passage be variable.
As a further improvement of the present invention, the start time point of the second time period t2 is later than one on the evaporator
Time point at the end of secondary defrost.
As a further improvement of the present invention, ginseng is preset when the humidity average value H2 is smaller by one than the default humidity value H1
When Kao Zhi ⊿ H, start the defrost next time of the evaporator.
For example, H1 and H2 use relative humidity, as the small 8-10 ﹪ of H2 ratio H1, start the change next time of the evaporator
Frost.
Detailed description of the invention
Fig. 1 is the longitudinal sectional schematic diagram of the refrigerator of one embodiment of the present invention；
Fig. 2 is the partial enlarged view that Fig. 2 is Tu1Zhong evaporator room part；
Fig. 3 is the flow chart of the humid control evaporator defrost based on humidity sensor detection；
Fig. 4 be it is same judge whether to start evaporator defrost during, second time period t2 is flat with time shaft
The schematic diagram of shifting.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention is illustrated so that refrigerating appliance is implemented as household Two door refrigerator as an example, but the present invention and not only
It is only restricted in Two door refrigerator, is readily applicable to three-door refrigerator, side by side combination refrigerator or multi-door refrigerator etc..Fig. 1 is implementation of the present invention
The vertical planing surface schematic diagram of example refrigerator.As shown in Figure 1, the inner space of refrigerator 100 is separated into mutually independent two by partition wall 8
Compartment is the first compartment 1 and second compartment 2 respectively.First 11 and second 21 is independently closed above-mentioned two compartment.
The refrigerated storage temperature of first compartment 1 is set higher than zero degree, and the second compartment 2 for being located at 1 lower section of the first compartment is then arranged to
Freezing chamber.It is equipped with evaporator room 4 in the lower section of partition wall 8, evaporator 5 and fan 6 are installed among the evaporator room 4.In wind
Circulate on direction, fan 6 is the downstream position for closing on evaporator 5 and being set to evaporator 5.Connect with the evaporator room 4
The first logical air duct 7 is set to 102 the inside of refrigerator lining, is especially set to the heat-insulated of 1 inner back wall behind of the first compartment
In layer, so that the first air duct 7 will not occupy effective storage space inside the first compartment 1, the space inside the first compartment 1 is improved
Utilization rate.Wind is after evaporator 5 is cooling, under the agitating of fan 6, enters the first compartment 1 along the first air duct 5.
Return air inlet 12 is provided in the first compartment 1.Cold wind passes through back after cooling stored goods respectively in the first compartment 1
Air port 12 enters return air access (not shown) Returning evaporimeter room 4.Evaporator room 4 is equipped with the inlet air being connected to return air channel
Mouth 41, wind are recycled back by the air intake vent 41 into evaporator room 4, and enter next sky after the cooling of evaporator 5
Gas circulation.
The part cold air come out from evaporator room 4 can be downwardly into along the second air duct (not shown) to be set as freezing
The second compartment 2 of room, and the specific region for installing and designing route arrival freezing chamber cools down frozen goods.
Refrigerator 100 has refrigeration and defrosting system, and controls the control unit of the refrigeration and defrosting system, and be used for
Detect the humidity sensor of the evaporator temperature sensor and detection of evaporator temperature by the humidity of the wind after cooling of evaporator 5
(not shown).Wherein the refrigeration and defrosting system include that compressor (not shown), evaporator 5, fan 6, defrost add
The elements such as hot device (not shown).Defrosting heater can be solid with the adjoining connection of the fin of evaporator and refrigerant tubing
It is scheduled on common electric heating wire together.Evaporator temperature sensor, which can be, is arranged the temperature to detect evaporator on an evaporator
Degree, humidity sensor are preferably disposed on the downstream position of evaporator to detect through the variation of the humidity of the wind of evaporator, the two
The temperature and humidity feedback that sensor detects is handled into the control circuit board of control unit.Control unit is according to processing
As a result corresponding control signal is issued to elements such as compressor 3, evaporator 4, fan 5, defrosting heaters, to realize control storage
Hide the refrigeration of room and the defrost of evaporator 4.
For accurate and be timely detected the humidity of the just wind by evaporator 5 and toward downstream flow, humidity sensor
Device is preferably located in the downstream position for closing on evaporator 5 or region.Fig. 2 is the partial enlargement of Tu1Zhong evaporator room part
Figure, as shown in Fig. 2, fan is set to the downstream area of the evaporator 5 in evaporator room 4 and close to evaporator 5.Humidity sensor
3 are just disposed proximate to the region between evaporator 5 and fan 6, are especially set to keeping away for the evaporator room 4 in the region.
In this way, wind circulates and also passes through quickly after through evaporator 5 humidity sensor 3 under the agitating of fan 6,
Humidity sensor 3 is detected in time just by the humidity and its variation of the wind after evaporator 5, thus based on above-mentioned
The frosting degree of humidity variation accurate judgement evaporator 5 is detected, whether to start next secondary evaporator defrost and providing accurately
Judgment basis.
About the setting position of humidity sensor, those skilled in the art should be readily conceivable that, as long as humidity passes
The position of sensor setting can satisfy humidity sensor and can quickly detect in time just through evaporator and past downstream side
Humidity to the wind of flowing is than more preferably.For example, humidity sensor can also be directly arranged on fan；Or
In the case that fan is set as aerofoil fan, humidity sensor also can be set the downstream position in the fan and close on the wind
Fan；Or humidity sensor is set on channel or the air outlet of connection evaporator room and other first and second air ducts.The example above
Setting position be to close on very much evaporator downstream.
Refrigerator is typically all to start defrost program according to the scheduled defrost period, between the time between two defrost programs
Every can be set to Fixed Time Interval or be set can according to refrigerator use and operating condition and it is self-adjustable
Time interval.
Fig. 3 is the flow chart of the humid control evaporator defrost based on humidity sensor detection.As shown in figure 3, refrigerator exists
Default mono- preset initial value of humidity value H1 is assigned in default setting, is judged whether for the first time using after bringing into operation as refrigerator
Start the judgement parameter of evaporator defrost.In the subsequent course of normal operation of refrigerator, humidity sensor is constantly detected close to evaporation
The position of device downstream or the humidity in region calculate the humidity average value in one second preset time period t2 and are set as H2, and will
Humidity average value H2 further determines whether the change next time for starting evaporator according to comparison result compared with default humidity value H1
Frost.If H2 ratio H1 small value reaches a default Can Kao Zhi ⊿ H, control unit if, starts the defrost next time of the evaporator.
During defrost next time, the temperature of temperature sensor real-time detection evaporator, according to the temperature results of detection
Judge whether the defrost of termination evaporator；If the temperature of evaporator reaches predetermined maximum temperature, control unit control evaporation
Device defrost terminates.At the same time, it also can determine whether to stop the defrost of evaporator according to the duration of defrost next time, if
The lasting defrost time reaches the maximum preset time, and control unit, which also controls evaporator defrost, to be terminated.It is being next to evaporator defrost
In the first preset time period t1 after end, humidity sensor constantly detects the position or region close to evaporator downstream
Then humidity calculates the humidity average value in first preset time period t1, and assigns this humidity average value to H1 as new
Default humidity value, to replace original preset initial value, using as judge whether next time start evaporator defrost judgement
Parameter.In next second time period t2 after evaporator defrost terminates, humidity sensor is constantly detected close to evaporator
The position of downstream or the humidity in region calculate the humidity average value H2 in next second preset time period t2, thus
Start judgement into next new evaporator defrost.
Humidity average value in the first above-mentioned preset time period t1 refers to humidity sensor in the first preset time period t1
Inside equably detect close to evaporator downstream position or region humidity and obtain several humidity values, if then seeking the dry and wet
The average value of angle value, such as the first preset time period t1 were set as 2 small times, and humidity sensor was once obtained every detection in 1 minute
1 humidity value, 120 humidity values are obtained in 2 hours, then acquire the average value of 120 humidity values again using as the
Humidity average value in one preset time period t1, and as default humidity value H1.It can be seen that every secondary evaporator defrost terminates, correspondingly
Default humidity value H1 can be assigned again, so H1 is likely to be change in the different defrost periods.
Similarly, humidity average value refers to humidity sensor in the second preset time period t2 in above-mentioned second preset time period t2
Inside equably detect close to evaporator downstream position or region humidity and obtain several humidity values, if then seeking the dry and wet
The average value of angle value.
Fig. 4 be it is same judge whether to start evaporator defrost during, second time period t2 is flat with time shaft
The schematic diagram of shifting.The time point that the above flush distillation device defrost terminates is start time point 0 namely the first preset time period t1
Start time is 0, and humidity average value H1 is obtained in the t1.Then the second preset time period t2 after start time point 0
Humidity average value H2 is obtained, again inside to compare with H1.The start time point of second preset time period t2 not with 0 weight of start time point
It closes, that is, is later than start time point 0, while advancing over time, the start time point of the second preset time period t2 is more next
Further away from start time point 0.Different humidity average value H2 is obtained in the t2 of different location on a timeline, with constantly with
H1 is compared.As it can be seen that it is same judge whether start evaporator defrost during, H1 is constant, but H2 is possible to
It as the time is becoming always, and substantially may be in gradually smaller trend.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (20)
1. a kind of refrigerating appliance, comprising:
Storeroom (1,2) for stored goods；
The evaporator room (4) that can be connected to the storeroom (1,2), the evaporator (5) for cooling wind are set to the evaporator
In room (4)；It can be circulated between the storeroom (1,2) and evaporator room (4) by the evaporator (5) cooling wind；
For detecting the humidity sensor (3) of the humidity of wind；
It is characterized in that, the humidity sensor (3) is set to the downstream position of the evaporator (5) on wind flow direction.
2. refrigerating appliance as described in claim 1, which is characterized in that further include the control being connect with the humidity sensor (3)
Unit processed, described control unit are based on the beginning of evaporator defrost described in the humid control of the humidity sensor (3) detection.
3. refrigerating appliance as claimed in claim 2, which is characterized in that further include the temperature for detecting the evaporator (5)
Temperature sensor, described control unit controls the knot of the evaporator defrost based on the temperature that the temperature sensor detects
Beam.
4. refrigerating appliance as claimed in claim 2, which is characterized in that described control unit is configured to: when evaporator (5)
When the lasting defrost time reaches preset time, described control unit controls the defrost for terminating the evaporator (5).
5. the refrigerating appliance as shown in claims 1 or 2, which is characterized in that the humidity sensor (3) is disposed proximate to described
The downstream position of evaporator (5).
6. refrigerating appliance as claimed in claim 5, which is characterized in that the humidity sensor (3) is set to the evaporator
On the wall of room (4).
7. refrigerating appliance as claimed in claim 5, which is characterized in that the humidity sensor (3) is set to the evaporator
The air outlet position of room (4).
8. refrigerating appliance as claimed in claim 1 or 2, which is characterized in that it further include the fan (6) for agitating wind to recycle,
On the flow direction of wind, which is set to the downstream position of the evaporator (5)；Humidity sensor (3) setting
Position or the humidity sensor (3) between the evaporator (5) and the fan (6) are set to the fan (6)
Downstream position and be set on the fan (6) close to the fan (6) or the humidity sensor (3).
9. refrigerating appliance as claimed in claim 8, which is characterized in that the fan (6) is set under the evaporator (5)
Swim position and close to the evaporator (5).
10. a kind of control method of refrigerating appliance, wherein the refrigerating appliance includes: the storeroom for stored goods；It can be with
The evaporator room of the storeroom connection, the evaporator for cooling wind are set in the evaporator room；It is cold by the evaporator
But wind can circulate between the storeroom and evaporator room；For detecting the humidity sensor of the humidity of wind；The control
Method processed includes the following steps:
The beginning of evaporator defrost described in humid control based on humidity sensor detection.
11. the control method of refrigerating appliance as claimed in claim 10, which comprises the steps of: based on described
The variation of the humidity of humidity sensor detection controls the beginning of the evaporator defrost.
12. the control method of refrigerating appliance as described in claim 10 or 11, which is characterized in that the wherein refrigerating appliance packet
Include: the temperature sensor of the temperature for detecting the evaporator includes；The control method following steps: it is passed based on the temperature
The temperature of sensor detection controls the end of the evaporator defrost.
13. the control method of refrigerating appliance as described in claim 10 or 11, which comprises the steps of: work as steaming
When the lasting defrost time of hair device reaches preset time, described control unit controls the defrost for terminating the evaporator.
14. the control method of refrigerating appliance as described in claim 10 or 11, which is characterized in that on wind flow direction, institute
The humidity of the wind of downstream position of the humidity sensor for detecting the evaporator is stated, and the downstream position is close to the evaporation
Device.
15. the control method of refrigerating appliance as claimed in claim 11, which is characterized in that described to be based on the humidity sensor
The variation control evaporator defrost of the humidity of detection starts to further include following steps: based on primary on the evaporator
Defrost terminate after the second preset time period t2 in humidity sensor detection the default humidity of humidity average value H2 and one
The comparison result of value H1 and the beginning for controlling evaporator defrost next time.
16. the control method of refrigerating appliance as claimed in claim 15, which is characterized in that the default humidity value H1 is immediately
The humidity of the humidity sensor detection is flat in the first preset time period t1 after the evaporator last time defrost terminates
Mean value or initial default.
17. the control method of the refrigerating appliance as described in claim 15 or 16, which is characterized in that the second time period t2's
Start time point is with elapsing for time backward and far from the time point at the end of the evaporator last time defrost.
18. the control method of refrigerating appliance as claimed in claim 17, which is characterized in that the humidity average value H2 with when
Between backward passage be variable.
19. the control method of the refrigerating appliance as described in claim 15 or 16, which is characterized in that the second time period t2's
Start time point is later than the time point at the end of the evaporator last time defrost.
20. the control method of the refrigerating appliance as described in claim 15 or 16, which is characterized in that as the humidity average value H2
When a default Can Kao Zhi ⊿ H smaller than the default humidity value H1, start the defrost next time of the evaporator.
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| CN109425168B (en) | 2022-02-11 |
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