CN202267298U - Defrosting refrigerator - Google Patents
Defrosting refrigerator Download PDFInfo
- Publication number
- CN202267298U CN202267298U CN201120342741XU CN201120342741U CN202267298U CN 202267298 U CN202267298 U CN 202267298U CN 201120342741X U CN201120342741X U CN 201120342741XU CN 201120342741 U CN201120342741 U CN 201120342741U CN 202267298 U CN202267298 U CN 202267298U
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- temperature
- compressor
- defrost
- blower fan
- defrosting
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Abstract
The utility model provides a defrosting refrigerator which comprises a box body, an air duct cover plate, a door body, an evaporator, a defrosting sensor, a compressor, a fan and a controller, wherein the air duct cover plate is arranged in the box body to limit a compartment and an air duct positioned between the air duct cover plate and the inner rear wall of the box body; the defrosting sensor is arranged on the evaporator and is used for detecting the temperature of the evaporator; the fan is arranged in the air duct and is used for circulating air between the air duct and the compartment; and the controller is respectively connected with the defrosting sensor, the compressor and the fan to control the compressor to stop running after the compressor runs a predetermined on and off period and also control the fan to continuously run till the temperature sensed by the defrosting sensor achieves the first temperature. With the adoption of the defrosting refrigerator, the inside space of the refrigerator is saved, the complete machine cost is reduced, and the energy consumption is saved.
Description
Technical field
The utility model relates to refrigeration plant design and manufacturing technology field, particularly a kind of defrost refrigerator.
Background technology
The Along with people's growth in the living standard, refrigeration plants such as refrigerator have become the necessity of people's daily life.Wherein adopt the refrigerator of frost-free system because have that temperature is even, refrigerating speed is fast and advantage such as automatic defrosting, receives more and more consumers' favor.
The refrigerator of Traditional use frost-free system, general using blower fan realize that cold air forced convertion circulation comes indirect cooling food.Because in the refrigerating operaton process, the evaporator surface temperature is lower than the dew-point temperature of air in the case, air constantly circulates in refrigerator, and evaporator surface meeting frosting causes heat exchanger effectiveness to decline to a great extent, so needs defrost once behind the every operation certain hour of refrigerator.Defrost relies on defrosting device to carry out, and defrosting device generally adopts defrosting heater, comprises forms such as aluminum pipe heater, steel pipe heater, quartz tube heater, is installed in usually near evaporator surface or the evaporimeter.
Defrosting device not only takies the refrigerator inside space, increases refrigerator complete machine cost; And, can increase energy consumption of refrigerator 5%～10% because need switch on to heater in the defrost process; In addition, local temperature is higher in the defrosting heater galvanization, and there is potential safety hazard in the refrigerator for combustible refrigerants such as employing R600a.
Summary of the invention
The purpose of the utility model is intended to solve at least one of above-mentioned technological deficiency.
A purpose of the utility model is to propose a kind of defrost refrigerator.
For achieving the above object, comprise according to the defrost refrigerator of the utility model: a casing and a door body; Air channel cover plate, said air channel cover plate are located in the said casing so that in said casing, limit a chamber and the air channel between the interior rear wall of air channel cover plate and said casing; Evaporimeter, said evaporimeter are installed in the said air channel; Defrosting sensor, said defrosting sensor is located at the temperature that is used to detect said evaporimeter on the said evaporimeter; Compressor, said compressor links to each other with said evaporimeter; Blower fan, said blower fan are located at and are used for circulated air between said air channel and said chamber in the said air channel; And controller; Said controller link to each other with said defrosting sensor, said compressor and said blower fan respectively in case said controller, to control said compressor at predetermined start-stop of the every operation of said compressor after the cycle out of service and control said blower fan continuous service and reach first temperature up to the detected temperature of said defrosting sensor.
Defrost refrigerator according to the utility model; Controller is according to the operation of detected temperature control compressor of defrosting sensor and blower fan; The air that when compressor is out of service, circulates in a chamber and the air channel through fan operation defrosts; Thereby extra defrosting device need be set in casing, thereby save the refrigerator inside space and reduced the complete machine cost; Simultaneously owing to need not heat, thereby reduced energy consumption of refrigerator to defrosting device; In addition, because the higher defective of local temperature that does not exist defrosting device to cause, thereby eliminated potential safety hazard for the refrigerator that adopts combustible refrigerant.
In addition, according to the defrost refrigerator of the utility model, can also have following additional technical characterictic:
In the utility model; Said defrost refrigerator further comprises: temperature sensor; Said temperature sensor is located at said the indoor temperature that is used to detect said chamber; Wherein said controller links to each other with said temperature sensor, so that be scheduled to individual start-stop in the cycle, when the detected temperature of said temperature sensor reaches second temperature said; It is out of service and control said blower fan continuous service and reach the 3rd temperature up to the detected temperature of said defrosting sensor that said controller is controlled said compressor, wherein first temperature >=the 3rd temperature.
Defrost refrigerator according to the utility model; The surface area frost that causes evaporimeter when operation under more abominable working condition such as hot and humid grade more for a long time; Except each cycle of operation defrost once; Can also assist defrost in the cycle at a predetermined start-stop of compressor, this auxiliary defrost can be carried out between the down period of predetermined each compressor of start-stop in the cycle or carry out after the cycle at several start-stops.According to the defrost refrigerator of the utility model embodiment, can solve that long-pending frost is more, the problem of defrost overlong time.
In the utility model, said first temperature is between 3 ℃～5 ℃.
In the utility model, at said predetermined start-stop in the cycle, said controller stops said fan operation when the detected temperature of said defrosting sensor reaches said the 3rd temperature.
According to the defrost refrigerator of the utility model, can make blower fan that one period out of service is arranged, thereby prolong fan life.
In the utility model, control the said blower fan raising speed of service at predetermined start-stop of the said compressor operating said controller cycle after or when the detected temperature of said temperature sensor reaches said second temperature.
According to the defrost refrigerator of the utility model, when the defrosting beginning, the speed of service of blower fan improves, thereby quickens heat exchange, shortens the defrost time, reduces temperature rise.
Aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize through the practice of the utility model.
Description of drawings
Above-mentioned and/or additional aspect of the utility model and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the structural representation according to the defrost refrigerator of an embodiment of the utility model;
Fig. 2 is the structured flowchart according to the defrost refrigerator of an embodiment of the utility model;
Fig. 3 is the work sketch map that carries out normal defrost according to the defrosting sensor of an embodiment of the utility model, blower fan and compressor;
Fig. 4 is the flow chart according to the control method of the normal defrost of the defrost refrigerator of an embodiment of the utility model;
Fig. 5 is the work sketch map of assisting defrost according to the defrosting sensor of another embodiment of the utility model, temperature sensor, blower fan and compressor; With
Fig. 6 is the flow chart according to the control method of the auxiliary defrost of the defrost refrigerator of another embodiment of the utility model.
The specific embodiment
Describe the embodiment of the utility model below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the utility model, and can not be interpreted as restriction the utility model.
In the description of the utility model; It will be appreciated that; Term " vertically ", " laterally ", " on ", the orientation of indications such as D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation be for based on orientation shown in the drawings or position relation; Only be to describe with simplifying for the ease of describing the utility model; Rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction to the utility model.
In the description of the utility model, need to prove, unless otherwise prescribed and limit; Term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection; Also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly through intermediary; For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
Defrost refrigerator and defrost control method of refrigerator according to the utility model embodiment are described with reference to the drawings below.
Fig. 1 is the structural representation according to the defrost refrigerator of an embodiment of the utility model.As shown in Figure 1, door body 200, compressor 300, evaporimeter 400 and blower fan 500 that defrost refrigerator 10 comprises casing 100, links to each other with casing 100.
In casing 100, be provided with air channel cover plate 120 so that in casing 100, limit a chamber 130 and the air channel 140 between the interior rear wall of air channel cover plate 120 and casing 100.Being exposed on the surface in the air channel 140 of air channel cover plate 120 is equipped with air channel foam 110.The top of air channel foam 110 and air channel cover plate 120 is provided with the air outlet 600 that is communicated with an air channel 140 and a chamber 130.The bottom of air channel foam 110 and air channel cover plate 120 is provided with the return air inlet 700 that is communicated with an air channel 140 and a chamber 130.
Fig. 2 is the structured flowchart according to the defrost refrigerator of an embodiment of the utility model.As shown in Figure 2; Controller 800 link to each other with defrosting sensor 410, compressor 300 and blower fan 500 respectively in case controller 800 at predetermined start-stop of compressor 500 every operations after the cycle, out of service and control blower fan 500 continuous services of control compressor 300 reach first temperature up to defrosting sensor 410 detected temperature.
Fig. 3 is the work sketch map that carries out normal defrost according to the defrosting sensor of an embodiment of the utility model, blower fan and compressor.
In compressor operating predetermined start-stop cycle (t0) afterwards, controller 800 forces control defrost refrigerators 10 to get into defrost periods (t1).Getting into defrost periods (t1) afterwards; Compressor 300 is out of service; Air in blower fan 500 continuous services, a chamber 130 carry out heat exchange with the surface of evaporimeter 400, after defrosting sensor 410 detects temperature and rises to first temperature (Trd); Controller 800 control defrost refrigerators 10 withdraw from defrost periods, get into normal refrigerating operaton state.Defrost periods (t1) is by first temperature (Trd) decision (generally require Trd＞0 ℃), and preferably, first temperature (Trd) is between 3 ℃～5 ℃.In an embodiment of the utility model, getting first temperature (Trd) is 5 ℃.
Fig. 4 is the flow chart according to the control method of the normal defrost of the defrost refrigerator of an embodiment of the utility model.As shown in Figure 4, the control method of the normal defrost of defrost refrigerator 10 may further comprise the steps:
Step S401, compressor 300 and blower fan 500 operations.
Step S402 detects compressor 300 and whether has moved a predetermined start-stop cycle.
Step S403 is if then stop compressor 300 operations; If, then do not return step S401.
Step S404, continuous service blower fan 500.
Step S405, whether the temperature that detects evaporimeter 400 reaches the first temperature T rd.
Step S406 is if then finish normal defrost; If, then do not return step S404.
Defrost control method of refrigerator according to the utility model embodiment; According to the temperature control compressor 300 of evaporimeter 400 and the operation of blower fan 500; Air between when compressor 300 is out of service, circulate through blower fan 500 operations in chamber 130 and the air channel 140 defrosts; Thereby need not use extra defrosting device to carry out defrost, thereby save the refrigerator inside space and reduced the complete machine cost; Simultaneously owing to need not heat, thereby reduced energy consumption of refrigerator to defrosting device; In addition, because the higher defective of local temperature that does not exist defrosting device to cause, thereby eliminated potential safety hazard for the refrigerator that adopts combustible refrigerant.
According to an embodiment of the utility model, defrost refrigerator 10 can also comprise temperature sensor 131.Temperature sensor 131 is located at the temperature that is used to detect a chamber 130 in the chamber 130.In an embodiment of the utility model, temperature sensor 131 is located on the madial wall of a chamber 130.As shown in Figure 2; Controller 800 links to each other with temperature sensor 131; So that be scheduled to a start-stop in the cycle; When temperature sensor 131 detected temperature reached second temperature, out of service and control blower fan 500 continuous services of controller 800 control compressor 300 reached the 3rd temperature up to defrosting sensor 410 detected temperature, wherein first temperature >=the 3rd temperature.In an embodiment of the utility model, second temperature can be 2 ℃.
Fig. 5 is the work sketch map of assisting defrost according to the defrosting sensor of another embodiment of the utility model, temperature sensor, blower fan and compressor.
Shown in Fig. 5 is the work sketch map of assisting defrost in a start-stop cycle (t0).After temperature sensor 131 detected temperature arrived turn-on temperature (Trk), compressor 300 brought into operation with blower fan 500 and freezes, and temperature begins to descend in the chamber 130, and the surface of evaporimeter 400 has frost to form.After temperature sensor 131 detected temperature arrive second temperature (Trt); Compressor 300 is shut down; Blower fan 500 continuous services; Between air in the chamber 130 carry out heat exchange with the surface of evaporimeter 400, rise to the 3rd temperature (Trq) until defrosting sensor 410 detected temperature, blower fan 500 is out of service.In predetermined start-stop cycle (t0), the running time of compressor 300, (t1) determined by Trk and Trt jointly, and determine (generally require Trq >=0 ℃) by the 3rd temperature (Trq) running time of blower fan 500 (t2).
According to an embodiment of the utility model, controller 800 can stop blower fan 500 operations when defrosting sensor 410 detected temperature reach the 3rd temperature (Trq).Therefore before beginning of the next cycle of operation (T), blower fan 500 can keep running status always, also one section run-stopping status can be arranged between compressor 300 down periods.
According to an embodiment of the utility model, first temperature (Trd) >=the 3rd temperature (Trq).In an embodiment of the utility model, get first temperature (Trd)=5 ℃ and the 3rd temperature (Trq)=3, can make blower fan 500 during each start-stop cycle, one period out of service is arranged, thereby prolong the life-span of blower fan 500.
In an embodiment of the utility model, a predetermined start-stop cycle (t0) of compressor 300 work afterwards or when temperature sensor 131 detected temperature reached second temperature (Trt), controller 800 control blower fans 500 improved the speeds of service.
According to the defrost refrigerator 10 of the utility model embodiment, when the defrosting beginning, the speed of service of blower fan 500 improves (being higher than the rotation speed of fan under the compression mechanism cold state), thereby quickens heat exchange, shortens the defrost time, reduces temperature rise.
In an embodiment of the utility model, during defrosting, along with the rising of defrosting sensor 410 detected temperature, the rotating speed that controller 800 can be controlled blower fan 500 reduces gradually, even closes.
Fig. 6 is the flow chart according to the control method of the auxiliary defrost of the defrost refrigerator of another embodiment of the utility model.As shown in Figure 6, the control method of the auxiliary defrost of defrost refrigerator may further comprise the steps:
Step S601, compressor 300 and blower fan 500 operations.
Step S602, whether the temperature between detection in the chamber 130 has reached the second temperature T rt.
Step S603 is if then stop compressor 300 operations; If, then do not return step S601.
Step S604, continuous service blower fan 500.
Step S605, whether the temperature that detects evaporimeter 400 has reached the 3rd temperature T rq.
Step S606 is if then finish auxiliary defrost; If, then do not return step S604.
Control method according to the auxiliary defrost of the utility model embodiment; When defrost refrigerator 10 under more abominable working condition such as hot and humid grade, move and the surface area frost that causes evaporimeter 400 more for a long time; Except (T) defrost once of each cycle of operation; Can also in a predetermined start-stop cycle (t0) of compressor 300, assist defrost, this auxiliary defrost can be carried out or after several start-stop cycles (t0), carry out between the down period of the each compressor 300 in the predetermined start-stop cycle (t0).According to the control method of the auxiliary defrost of the utility model embodiment, can solve that long-pending frost is more, the problem of defrost overlong time.
According to an embodiment of the utility model, when the temperature of evaporimeter 400 reaches the 3rd temperature (Trq), can stop blower fan 500 operations.Therefore before beginning of the next cycle of operation (T), blower fan 500 can keep running status always, also one section run-stopping status can be arranged between compressor 300 down periods.
According to an embodiment of the utility model, first temperature (Trd) >=the 3rd temperature (Trq).In an embodiment of the utility model, get first temperature (Trd)=5 ℃ and the 3rd temperature (Trq)=3, can make blower fan 500 during each start-stop cycle, one period out of service is arranged, thereby prolong the life-span of blower fan 500.
In an embodiment of the utility model, a predetermined start-stop cycle (t0) of compressor 300 work afterwards or the temperature a chamber 130 in when reaching second temperature (Trt), the speed of service of raising blower fan 500.
According to the defrosting control method of the utility model embodiment, when the defrosting beginning, improve the speed of service (being higher than the rotation speed of fan under the compression mechanism cold state) of blower fan 500, thereby quicken heat exchange, shorten the defrost time, reduce temperature rise.
In an embodiment of the utility model, during defrosting, the rising along with the temperature of evaporimeter 400 can reduce the rotating speed of blower fan 500 gradually, even close blower fan 500.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained among at least one embodiment or example of the utility model.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described the embodiment of the utility model; For those of ordinary skill in the art; Be appreciated that under the situation of principle that does not break away from the utility model and spirit and can carry out multiple variation, modification, replacement and modification that the scope of the utility model is accompanying claims and be equal to and limit to these embodiment.
Claims (5)
1. a defrost refrigerator is characterized in that, comprising:
Casing and door body;
Air channel cover plate, said air channel cover plate are located in the said casing so that in said casing, limit a chamber and the air channel between the interior rear wall of air channel cover plate and said casing;
Evaporimeter, said evaporimeter are installed in the said air channel;
Defrosting sensor, said defrosting sensor is located at the temperature that is used to detect said evaporimeter on the said evaporimeter;
Compressor, said compressor links to each other with said evaporimeter;
Blower fan, said blower fan are located at and are used for circulated air between said air channel and said chamber in the said air channel; With
Controller; Said controller link to each other with said defrosting sensor, said compressor and said blower fan respectively in case said controller, to control said compressor at predetermined start-stop of the every operation of said compressor after the cycle out of service and control said blower fan continuous service and reach first temperature up to the detected temperature of said defrosting sensor.
2. defrost refrigerator according to claim 1 is characterized in that, said defrost refrigerator further comprises:
Temperature sensor; Said temperature sensor is located at said the indoor temperature that is used to detect said chamber; Wherein said controller links to each other with said temperature sensor, so that be scheduled to individual start-stop in the cycle, when the detected temperature of said temperature sensor reaches second temperature said; It is out of service and control said blower fan continuous service and reach the 3rd temperature up to the detected temperature of said defrosting sensor that said controller is controlled said compressor, wherein first temperature >=the 3rd temperature.
3. defrost refrigerator according to claim 2 is characterized in that, said first temperature is between 3 ℃～5 ℃.
4. defrost refrigerator according to claim 2 is characterized in that, at said predetermined start-stop in the cycle, said controller stops said fan operation when the detected temperature of said defrosting sensor reaches said the 3rd temperature.
5. defrost refrigerator according to claim 1 and 2; It is characterized in that, control the said blower fan raising speed of service at predetermined start-stop of the said compressor operating said controller cycle after or when the detected temperature of said temperature sensor reaches said second temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120342741XU CN202267298U (en) | 2011-09-14 | 2011-09-14 | Defrosting refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120342741XU CN202267298U (en) | 2011-09-14 | 2011-09-14 | Defrosting refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202267298U true CN202267298U (en) | 2012-06-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120342741XU Withdrawn - After Issue CN202267298U (en) | 2011-09-14 | 2011-09-14 | Defrosting refrigerator |
Country Status (1)
| Country | Link |
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| CN (1) | CN202267298U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287982A (en) * | 2011-09-14 | 2011-12-21 | 合肥美的荣事达电冰箱有限公司 | Defrosting refrigerator and control method thereof |
| CN104329872A (en) * | 2014-10-24 | 2015-02-04 | 海信容声(广东)冰箱有限公司 | Refrigerator evaporator defrosting method |
| CN109442855A (en) * | 2018-10-18 | 2019-03-08 | 湖北美的电冰箱有限公司 | Defrosting control method and device |
| CN109442854A (en) * | 2018-10-17 | 2019-03-08 | 湖北美的电冰箱有限公司 | Defrosting control method and device |
-
2011
- 2011-09-14 CN CN201120342741XU patent/CN202267298U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287982A (en) * | 2011-09-14 | 2011-12-21 | 合肥美的荣事达电冰箱有限公司 | Defrosting refrigerator and control method thereof |
| CN102287982B (en) * | 2011-09-14 | 2013-11-06 | 合肥美的电冰箱有限公司 | Defrosting refrigerator and control method thereof |
| CN104329872A (en) * | 2014-10-24 | 2015-02-04 | 海信容声(广东)冰箱有限公司 | Refrigerator evaporator defrosting method |
| CN109442854A (en) * | 2018-10-17 | 2019-03-08 | 湖北美的电冰箱有限公司 | Defrosting control method and device |
| CN109442854B (en) * | 2018-10-17 | 2020-10-09 | 湖北美的电冰箱有限公司 | Defrosting control method and device |
| CN109442855A (en) * | 2018-10-18 | 2019-03-08 | 湖北美的电冰箱有限公司 | Defrosting control method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20131106 |
|
| RGAV | Abandon patent right to avoid regrant |