CN103363761B - Frostless refrigerator with circulation wind defrosting function and control method thereof - Google Patents
Frostless refrigerator with circulation wind defrosting function and control method thereof Download PDFInfo
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- CN103363761B CN103363761B CN201310288438.XA CN201310288438A CN103363761B CN 103363761 B CN103363761 B CN 103363761B CN 201310288438 A CN201310288438 A CN 201310288438A CN 103363761 B CN103363761 B CN 103363761B
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Abstract
The invention relates to the technical field of refrigerators in the electrical appliances, in particular to a frostless refrigerator with a circulation wind defrosting function and a control method thereof. The frostless refrigerator with the circulation wind defrosting function comprises a cold chamber, a cold chamber temperature sensor arranged on the side wall of the cold chamber, a fan motor arranged at the back of the cold chamber, an evaporator arranged at the bottom of the fan motor, a defrosting temperature sensor arranged on an air inlet tube at the top of the evaporator, and a cold chamber return air inlet at the bottom of the evaporator, wherein a defrosting heater is arranged between the bottom of the evaporator and the cold chamber return air inlet; a cold air supply inlet is formed in the back of the cold chamber; a display used for adjusting temperature is arranged on a refrigerator door body. Through utilizing the temperature difference between the evaporator and the cold chamber when the refrigerator stops working, the residue cold of the evaporator can be utilized to refrigerate the cold chamber; high-temperature air in the cold chamber can be utilized to defrost the evaporator.
Description
Technical field
The present invention relates to the refrigerator technical field in electric equipment, more specifically, relate to a kind of band circulated air defrost frost-free refrigerator-freezer and control method thereof.
Background technology
For band circulated air defrost frost-free refrigerator-freezer, generally refer to that the fan electromotor of refrigerator is lowered the temperature except the cold air forced circulation produced by evaporimeter when compressor for refrigeration refrigeration reaches room between refrigeration, the function such as freezing.Also be that the fan electromotor of refrigerator utilizes the high-temperature gas of refrigerating chamber when compressor shutdown, scrub the frost layer on evaporimeter.So there is multi-functional for band circulated air defrost frostless electric frost: one, to be generally [2 DEG C ~ 8 DEG C] because of the temperature of refrigerating chamber; and the temperature of the evaporimeter of refrigerator when compressor shutdown is generally below 0 DEG C; utilize the high-temperature gas of refrigerator room, can defrost to evaporimeter.The difference of the temperature of evaporimeter and the temperature of refrigerator room when two, utilizing refrigerator to shut down, can utilize the remaining cold of evaporimeter to freeze to refrigerator room.Three, utilize circulated air defrost to add the defrost of electric heater, defrost has duplicate protection, strengthens the reliability of refrigerator function.But in the prior art,
If 1 have employed circulation defrost, but with the fixed temperature of evaporimeter, such as: when the temperature of evaporimeter is about 3 DEG C ~ 5 DEG C, the blower fan of circulation defrost just quits work.If the temperature that refrigeration regulates is 2 DEG C, the temperature requirement that there is refrigerating chamber is also lower than the temperature requirement of evaporimeter, and circulation defrost just cannot effectively utilize room between remaining cold pair of evaporimeter to freeze, and the temperature of possible refrigerating chamber is difficult to reach.Limit the adjustable range of temperature of refrigerating chamber.
If 2 power that blower fan consumption is not set in circulation defrost process with utilize the cold border equalization point carrying out freezing more than evaporimeter, the power of fan operation consumption may be caused to be greater than the refrigeration that cold belt comes more than evaporimeter, cause power consumption to increase, be difficult to produce a desired effect.
3 if air-cooled refrigerated cabinet, in order to the convenience on controlling, may have employed one or more air door, and cause the control of refrigerator complicated, cost up, the competitiveness of product declines.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of band circulated air defrost frost-free refrigerator-freezer, utilizes the high-temperature gas of refrigerating chamber to defrost to evaporimeter, improves circulation defrost road to cold utilization more than evaporimeter.Improve refrigerator performance, enhance the reliability that refrigerator uses, further, provide its control method.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of band circulated air defrost frost-free refrigerator-freezer, wherein, comprise refrigerator room, be located at the refrigerator room temperature-sensitive head of refrigerator room sidewall, be located at the fan electromotor at back, refrigerator room, be located at the evaporimeter bottom fan electromotor, be located at the defrost temperature-sensitive head of evaporimeter top air inlet pipe, be located at the refrigerator room return air inlet of base of evaporator, defrosting heater is provided with between base of evaporator and refrigerator room return air inlet, the back of refrigerator room is provided with refrigeration air outlet, the door body of refrigerator is provided with the display screen regulating temperature.The first fruit and vegetable box and the second fruit and vegetable box is also provided with bottom described refrigerator room.
Fan electromotor can force air to circulate, and evaporimeter can carry out cold output, and display screen is provided with button, the temperature of adjustable refrigerator room, and refrigerator room temperature-sensitive head is used for the actual temperature of perception refrigerator room, and the refrigeration modes of refrigerator room is frostless air-cooled.When refrigerator room temperature-sensitive head reaches turn-on temperature, first judged the temperature of evaporimeter by defrost temperature-sensitive head.The temperature of defrost temperature-sensitive head is lower than the design temperature of display screen, first Half Speed startup optimization fan electromotor, utilizes the remaining cold of evaporimeter to freeze to refrigerator room, utilizes again the high-temperature gas of refrigerator room, the floating frost of evaporator surface is scrubbed, the frost layer of evaporimeter is removed.Except using circulated air defrost, also facilitate defrosting heater defrost, dual defrosting system, when guaranteeing that a certain type defrost was lost efficacy, the defrost of refrigerator all can be changed totally.
The refrigerant inlet pipe position at evaporimeter top is fixed with defrost temperature-sensitive head, and whether defrost temperature-sensitive head is whether clean for judging evaporimeter defrost, and carries out the control of circulated air defrost or electric heater defrost.Adopt circulated air defrost to be main when defrost, defrosting heater heating defrost is auxiliary, and when dual defrost guarantees that a certain type defrost was lost efficacy, the defrost of refrigerator all can be changed totally, ensure that the quality of refrigerator, improves the reliability of refrigerator.
Base of evaporator has the return air inlet of refrigerator room, the air outlet of refrigeration is had at fan electromotor top, in the running of fan electromotor, the high-temperature gas of refrigerator room gets back to refrigerator room return air inlet, through evaporator, deliver to refrigerator room from refrigeration air outlet, form the circulation of an air current composition with this.
With a control method for circulated air defrost frost-free refrigerator-freezer, comprising following steps:
S1. refrigerator room temperature-sensitive head detects the temperature of refrigerator indoor, if reach turn-on temperature, carries out step S2;
S2. defrost temperature-sensitive head detects the temperature of evaporimeter, and this temperature is T1, and the design temperature of display screen is T2;
If T1 is less than T2 and T2-T1≤2 degree, carry out step S3;
If T1 is greater than T2 or T1 and is less than T2 and T2-T1≤2 degree, carry out step S4;
S3. Half Speed starts fan electromotor, utilizes the waste heat of evaporimeter to freeze to refrigerator room, utilizes again the high-temperature gas of refrigerator room, scrub, the frost layer of evaporimeter removed the floating frost of evaporator surface;
Defrost temperature-sensitive head detects the temperature of evaporimeter, if this temperature T1 stablizes, continues Half Speed and starts fan electromotor, utilize the waste heat of evaporimeter to freeze to refrigerator room, until run to the shutdown temperature of refrigerator room temperature-sensitive head;
Defrost temperature-sensitive head detects the temperature of evaporimeter, if this temperature constantly raises, is increased to T1 and is greater than T2 or T1 and is less than T2 and T2-T1≤2 degree, carry out step S4;
S4. full speed startup optimization compressor and fan electromotor, freeze to refrigerator room, run to the shutdown temperature of refrigerator room temperature-sensitive head.
Described display screen is provided with button, and the adjustable range of its temperature is 2 ~ 8 degree.User can set according to the temperature of the demand of own temperature to display screen.
Compared with prior art, beneficial effect is:
1, the present invention utilizes the high-temperature gas of refrigerator room; the temperature of refrigerating chamber is generally [2 DEG C ~ 8 DEG C]; and the temperature of the evaporimeter of refrigerator when compressor shutdown is generally below 0 DEG C, utilize the high-temperature gas of refrigerator room, can defrost to evaporimeter.Substantially the frost layer of evaporimeter all can be changed to the greatest extent in each shutdown; the frost layer on evaporimeter is avoided to add up due to the available machine time length of compressor; improve refrigerating efficiency during compressor operating; strengthen the reliability that refrigerator uses, prevent the phenomenons such as evaporimeter frost layer causes defrost bad because of accumulative.
2, the difference of the temperature of evaporimeter and the temperature of refrigerator room when the present invention utilizes refrigerator to shut down, can utilize the remaining cold of evaporimeter to freeze to refrigerator room.But the power needing to weigh fan electromotor consumption in circulation defrost process with utilize the cold border equalization point carrying out freezing more than evaporimeter, find the refrigeration of cold belt more than evaporimeter and be equal to, or greater than the power that fan electromotor runs consumption.
3, the present invention is except using circulated air defrost, and also facilitate electric heater defrost, dual defrosting system, when guaranteeing that a certain type defrost was lost efficacy, the defrost of refrigerator all can be changed totally, ensure that the quality of refrigerator, improves the reliability of refrigerator.
Accompanying drawing explanation
Fig. 1 is refrigerator internal structure schematic diagram of the present invention.
Fig. 2 is refrigerator Facad structure schematic diagram of the present invention.
Fig. 3 is door part of refrigerator display screen structure schematic diagram of the present invention.
Fig. 4 is refrigerator controlling method principle schematic of the present invention.
Detailed description of the invention
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent; In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
As Figure 1-3, a kind of band circulated air defrost frost-free refrigerator-freezer, wherein, comprise refrigerator room 11, be located at the refrigerator room temperature-sensitive head 21 of refrigerator room 11 sidewall, be located at the fan electromotor 22 at back, refrigerator room 11, be located at the evaporimeter 24 bottom fan electromotor 22, be located at the defrost temperature-sensitive head 23 of evaporimeter 24 top air inlet pipe, be located at the refrigerator room return air inlet 26 bottom evaporimeter 24, defrosting heater 25 is provided with between bottom evaporimeter 24 and refrigerator room return air inlet 26, the back of refrigerator room 11 is provided with refrigeration air outlet 27, the door body of refrigerator is provided with the display screen 28 regulating temperature.The first fruit and vegetable box 12 and the second fruit and vegetable box 13 is also provided with bottom refrigerator room 11.
Fan electromotor 22 can force air to circulate, evaporimeter 24 can carry out cold output, and display screen 28 is provided with button, the temperature of adjustable refrigerator room 11, refrigerator room temperature-sensitive head 21 is for the actual temperature of perception refrigerator room 11, and the refrigeration modes of refrigerator room 11 is frostless air-cooled.When refrigerator room temperature-sensitive head 21 reaches turn-on temperature, first judged the temperature of evaporimeter 24 by defrost temperature-sensitive head 23.The temperature of defrost temperature-sensitive head 23 is lower than the design temperature of display screen 28, first Half Speed startup optimization fan electromotor 22, utilizes the remaining cold of evaporimeter 24 to freeze to refrigerator room 11, utilizes again the high-temperature gas of refrigerator room 11, the floating frost on evaporimeter 24 surface is scrubbed, the frost layer of evaporimeter 24 is removed.Except using circulated air defrost, also facilitate defrosting heater 25 defrost, dual defrosting system, when guaranteeing that a certain type defrost was lost efficacy, the defrost of refrigerator all can be changed totally.
The refrigerant inlet pipe position at evaporimeter 24 top is fixed with defrost temperature-sensitive head 23, and whether defrost temperature-sensitive head 23 is whether clean for judging evaporimeter 24 defrost, and carries out the control of circulated air defrost or electric heater defrost.Adopt circulated air defrost to be main when defrost, it is auxiliary that defrosting heater 25 heats defrost, and when dual defrost guarantees that a certain type defrost was lost efficacy, the defrost of refrigerator all can be changed totally, ensure that the quality of refrigerator, improves the reliability of refrigerator.
The return air inlet 26 of refrigerator room is had bottom evaporimeter 24, the air outlet 27 of refrigeration is had at fan electromotor 22 top, in the running of fan electromotor 22, the high-temperature gas of refrigerator room 11 gets back to refrigerator room return air inlet 26, through evaporator 24, deliver to refrigerator room 11 from refrigeration air outlet 27, form the circulation of an air current composition with this.Display screen 28 is provided with button, and the adjustable range of its temperature is 2 ~ 8 degree.User can set according to the temperature of the demand of own temperature to display screen.
As shown in Figure 4, a kind of control method with circulated air defrost frost-free refrigerator-freezer, wherein, comprises the following steps:
S1. refrigerator room temperature-sensitive head 21 detects the temperature in refrigerator room 11, if reach turn-on temperature, carries out step S2;
S2. defrost temperature-sensitive head 23 detects the temperature of evaporimeter 24, and this temperature is T1, and the design temperature of display screen 28 is T2;
If T1 is less than T2 and T2-T1≤2 degree, carry out step S3;
If T1 is greater than T2 or T1 and is less than T2 and T2-T1≤2 degree, evaporimeter 24 is available remaining cold less, there is fan electromotor 22 and runs the power consumed and be greater than and utilize the cold effect of freezing to refrigerator room 11 of evaporimeter more than 24, carry out step S4;
S3. Half Speed starts fan electromotor 22, because the temperature of refrigerator room 11 is generally 2 DEG C ~ 8 DEG C, and the temperature of the evaporimeter 24 of refrigerator when compressor shutdown is generally below 0 DEG C, the waste heat of evaporimeter 24 is utilized to freeze to refrigerator room 11, utilize again the high-temperature gas of refrigerator room 11, the floating frost on evaporimeter 24 surface is scrubbed, the frost layer of evaporimeter 24 is removed;
Defrost temperature-sensitive head 23 detects the temperature of evaporimeter 24, if this temperature T1 stablizes, continue Half Speed and start fan electromotor 22, utilize the waste heat of evaporimeter 24 to freeze to refrigerator room 11, do not need to start compressor, until run to the shutdown temperature of refrigerator room temperature-sensitive head 21;
Defrost temperature-sensitive head 23 detects the temperature of evaporimeter 24, if this temperature constantly raises, is increased to T1 and is greater than T2 or T1 and is less than T2 and T2-T1≤2 degree, carry out step S4;
S4. full speed startup optimization compressor and fan electromotor 22, freeze to refrigerator room 11, run to the shutdown temperature of refrigerator room temperature-sensitive head 21.
In the process of circulated air defrost, fan electromotor 22 consume power with utilize the cold border equalization point carrying out freezing of evaporimeter more than 24 to be about: suppose that defrost temperature-sensitive head 23 temperature is T1, the design temperature of display screen 28 is T2, fan electromotor 22 Half Speed startup optimization consumed power P.Its balanced type is: the effect running circulated air defrost during T2-T1=2 DEG C approximates fan electromotor Half Speed startup optimization consumed power P.Time of circulated air defrost changes with the design temperature change of defrost temperature-sensitive head 23 and display screen 28, but the refrigeration that its effect keeps cold belt more than evaporimeter is greater than the power that fan electromotor consumes.Reach expection energy-saving effect.
Except using circulated air defrost, also facilitate electric heater defrost, dual defrosting system, when guaranteeing that a certain type defrost was lost efficacy, the defrost of refrigerator all can be changed totally, ensure that the quality of refrigerator, improves the reliability of refrigerator.
The corresponding same or analogous parts of same or analogous label; Describe position relationship in accompanying drawing only for exemplary illustration, the restriction to this patent can not be interpreted as.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can do the improvement of some applicable actual conditions to the technical scheme of invention.Therefore, protection scope of the present invention is not limited thereto, and those of skill in the art are any to be included within scope based on non-material change in technical solution of the present invention.
Claims (2)
1. the control method with circulated air defrost frost-free refrigerator-freezer, is characterized in that comprising the following steps:
S1. refrigerator room temperature-sensitive head (21) detects the temperature in refrigerator room (11), if reach turn-on temperature, carries out step S2;
S2. defrost temperature-sensitive head (23) detects the temperature of evaporimeter (24), and this temperature is T1, and the design temperature of display screen (28) is T2;
If T1 is less than T2 and T2-T1≤2 degree, carry out step S3;
If T1 is greater than T2 or T1 and is less than T2 and T2-T1≤2 degree, carry out step S4;
S3. Half Speed starts fan electromotor (22), the waste heat of evaporimeter (24) is utilized to freeze to refrigerator room (11), utilize again the high-temperature gas of refrigerator room (11), the floating frost on evaporimeter (24) surface is scrubbed, the frost layer of evaporimeter (24) is removed;
Defrost temperature-sensitive head (23) detects the temperature of evaporimeter (24), if this temperature T1 stablizes, continue Half Speed and start fan electromotor (22), utilize the waste heat of evaporimeter (24) to freeze to refrigerator room (11), until run to the shutdown temperature of refrigerator room temperature-sensitive head (21);
Defrost temperature-sensitive head (23) detects the temperature of evaporimeter (24), if this temperature constantly raises, is increased to T1 and is greater than T2 or T1 and is less than T2 and T2-T1≤2 degree, carry out step S4;
S4. full speed startup optimization compressor and fan electromotor (22), freeze to refrigerator room (11), run to the shutdown temperature of refrigerator room temperature-sensitive head (21).
2. a kind of control method with circulated air defrost frost-free refrigerator-freezer according to claim 1, is characterized in that, described display screen (28) is provided with button, and the adjustable range of its temperature is 2 ~ 8 degree.
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| CN201310288438.XA CN103363761B (en) | 2013-07-10 | 2013-07-10 | Frostless refrigerator with circulation wind defrosting function and control method thereof |
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| CN103363761B true CN103363761B (en) | 2015-06-24 |
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| CN104329872A (en) * | 2014-10-24 | 2015-02-04 | 海信容声(广东)冰箱有限公司 | Refrigerator evaporator defrosting method |
| CN105466153A (en) * | 2016-01-13 | 2016-04-06 | 广东机电职业技术学院 | Portable cold and hot insulation box and temperature regulation method thereof |
| CN106382785A (en) * | 2016-08-31 | 2017-02-08 | 成都鲜生活冷链物流有限公司 | Defrosting method for cold chain transport vehicle |
| CN107120899B (en) * | 2017-04-27 | 2019-09-20 | 海信（山东）冰箱有限公司 | A kind of wind cooling refrigerator and its defrosting control method |
| CN107477973A (en) * | 2017-08-28 | 2017-12-15 | 合肥华凌股份有限公司 | Blower control method, system and refrigerator |
| CN108800715B (en) * | 2018-06-19 | 2021-02-02 | 海信（山东）冰箱有限公司 | Refrigeration equipment and control method |
| CN109442785B (en) * | 2018-10-30 | 2021-05-07 | 海信容声(广东)冰箱有限公司 | Refrigeration equipment and control method |
| CN110887315A (en) * | 2019-12-03 | 2020-03-17 | 珠海格力电器股份有限公司 | Refrigerator defrosting detection device, refrigerator defrosting control method and refrigerator |
| CN110940135A (en) * | 2019-12-09 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator and defrosting detection device and defrosting control method thereof |
| CN111306885A (en) * | 2020-03-03 | 2020-06-19 | 广东奥马冰箱有限公司 | Air-cooling full-refrigerating box return air defrosting control method |
| CN112460905B (en) * | 2020-11-19 | 2022-02-25 | 珠海格力电器股份有限公司 | Refrigerator return air defrosting control method and device and air-cooled refrigerator |
| CN113654296B (en) * | 2021-08-12 | 2022-07-15 | 珠海格力电器股份有限公司 | Refrigerator defrosting control method and device, storage medium and refrigerator |
| CN114935237A (en) * | 2022-05-30 | 2022-08-23 | 合肥美菱物联科技有限公司 | Refrigerator defrosting system and control method |
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