CN1474143A - Defrosting device for refrigerator - Google Patents
Defrosting device for refrigerator Download PDFInfo
- Publication number
- CN1474143A CN1474143A CNA02129142XA CN02129142A CN1474143A CN 1474143 A CN1474143 A CN 1474143A CN A02129142X A CNA02129142X A CN A02129142XA CN 02129142 A CN02129142 A CN 02129142A CN 1474143 A CN1474143 A CN 1474143A
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- China
- Prior art keywords
- water
- evaporimeter
- cold air
- storage tank
- evaporator
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Abstract
The defroster for refrigerator includes cold air path for circulating cold air inside the case, evaporator set on the cold air path to constitute freezing circulation, water storage tank over the evaporator to store normal temperature water, valve connected between the water storage tank and the evaporator to supply water to the evaporator selectively, and the water collecting tank below the evaporator to collect thawed water from the evaporator. In addition, between the water collecting tank and the water storage tank, there may be circulating pipeline with circulating pump to pump water from the water collecting tank to the water storage tank. Utilizing water in normal temperature to eliminate frost attached to the evaporator can avoid temperature rise during defrosting and raise freezing efficiency.
Description
Technical field
The present invention relates to refrigerator, especially utilize the water of normal temperature to remove the defrosting device for refrigerator of the frost that evaporimeter produces.
Background technology
General refrigerator is the freeze cycle by compression condensation-expansion-evaporation of carrying out medium repeatedly, and the box house temperature is reduced, and keeps the device of food freshness within a certain period of time.Refrigerator is one of necessity in the life.
In refrigerator, compressor, condenser, expansion valve and evaporimeter form freeze cycle as the basic comprising parts.Compressor becomes the gas medium increasing temperature and pressure of low-temp low-pressure the gas medium of HTHP; The condensing medium that flows into from compressor of condenser; The diameter of expansion valve is narrower and small than the diameter of other parts, will reduce pressure from the medium that condenser flows into; Medium through expansion valve is in evaporimeter under the low-pressure state, can absorb the heat of box house.
The skiagraph of prior art refrigerator as shown in Figure 1, the prior art refrigerator comprises refrigerating chamber 2 and refrigerating chamber.Refrigerating chamber 2 is arranged on the inside of casing 1, carries out the cold air that heat exchange flows directly into by evaporimeter 5 and makes refrigerating chamber 2 keep 18 degrees below zero Celsius approximately; The cold air of refrigerating chamber 2 flow in the refrigerating chamber, makes refrigerating chamber keep 0 to 7 degree Celsius.The rear downside of refrigerating chamber 2 is provided with Machine Room 4.The rear of refrigerating chamber 2 is provided with cold air path 10, and cold air flows into refrigerating chamber 2 and refrigerating chamber by cold air path, carries out heat exchange.Cold air path 10 is provided with evaporimeter 5, blowing fan 9 and motor 8.Blowing fan 9 forced circulation make cold air flow into refrigerating chamber 2 by the cold air of the temperature reduction of evaporimeter 5; Motor 8 drives the blowing fan rotation.The top of cold air path is provided with cold gas exhausting outlet 11 in addition, and the bottom of cold air path is provided with cold air sucting inlet 12.
In addition, casing 1 by dividing plate by about be divided into refrigerating chamber 2 and refrigerating chamber (not shown).Dividing plate is provided with a plurality of connected entrances, by connected entrance the cold air of refrigerating chamber and the cold air of refrigerating chamber is freely exchanged, and makes the cold air of refrigerating chamber 2 be supplied to refrigerating chamber, and the cold air of refrigerating chamber flow in the cold air path 10 by refrigerating chamber.
The course of work with prior art refrigerator of said structure is simply described as follows:
Be equipped with in refrigerating chamber 2 and refrigerating chamber under the state of food and apply power supply, then the compressor in the Machine Room 4 starts according to the control signal of control part, carries out heat exchange by freeze cycle on evaporimeter 5.By the cold air process heat-absorbing action of evaporimeter, temperature is lowered, and cold air is transported in the refrigerating chamber 2 by blowing fan 9.Part in the cold air flow into refrigerating chamber by connected entrance.The cold air that rises through temperature after refrigerating chamber 2 and the refrigerating chamber circulation flows to the evaporimeter direction by cold air sucting inlet 12 again.
In the refrigerator operation process, the moisture that flows out in the casing forms frost at evaporimeter 5, above evaporimeter 5.Frost is the key factor that hinders cold air flow, can reduce cooling effectiveness, so must regularly carry out the defrost process of removing frost on the evaporimeter 5.Generally the periphery at evaporimeter 5 is provided with a plurality of Defrost heaters 6,7.Defrost heater is divided into contact Defrost heater 6 and contactless Defrost heater 7.6 contacts of contact Defrost heater are on evaporimeter 5, on the fin of heat conduction with heat transferred evaporimeter 5; Contactless Defrost heater 7 keeps a determining deviation with evaporimeter 5, on the fin of heat radiation with heat transferred evaporimeter 5.Defrosting can be adopted the method that one of them or both adopt according to the kind of refrigerator.
In operation during defrost process, apply the electric current of certain hour to Defrost heater 6,7, the heat of generation will be removed attached to the frost on the evaporimeter 5 to the fin transmission of evaporimeter 5.At this moment the water of Chan Shenging is discharged or self is evaporated to the refrigerator outside by independent dust-collecting bucket and collector pipe.
But the Defrost heater with prior art of said structure has following shortcoming: when the operation defrost process, the heat that produces by Defrost heater 6,7 rises the box house temperature, so increase the weight of to the initial stage freezing load of freeze cycle next time, because the load of evaporimeter 5 increases the weight of, and has finally caused cooling effectiveness decline.And Defrost heater 6,7 produces heat by applying electric current, can cause Product Safety decline above more than temperature required if apply too much electric current.
Summary of the invention
Technical problem to be solved by this invention provides a kind of water of normal temperature that utilizes and will remove attached to the frost on the evaporimeter, prevents during the operation defrost process that the box house temperature from rising, and improves cooling effectiveness, freezer frost device safe in utilization.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of defrosting device for refrigerator, the cold air path that comprises circulation box house cold air, cold air path is provided with the evaporimeter that constitutes freeze cycle, the aqua storage tank that the storage normal-temperature water is arranged above evaporimeter, be connected with the switching valve that optionally water of aqua storage tank is fed to the evaporimeter upper end between aqua storage tank and evaporimeter upper end, the below of evaporimeter is provided with the dust-collecting bucket of the water that collection melts from evaporimeter.
Between dust-collecting bucket and aqua storage tank, be connected with circulation line, on circulation line, be provided with water with dust-collecting bucket and be pumped into circulating pump in the aqua storage tank.
The invention has the beneficial effects as follows: utilize the water of normal temperature to remove attached to the frost on the evaporimeter, the rising of box house temperature has improved cooling effectiveness when having prevented to carry out defrost process.In addition, need not the extra heater that is provided for defrosting, prevented, so guaranteed the security used because heater produces the security incident that too much heat causes.
Description of drawings
Fig. 1 is the skiagraph of prior art defrosting device for refrigerator.
Fig. 2 is the skiagraph of defrosting device for refrigerator first example structure of the present invention.
Fig. 3 is the skiagraph of defrosting device for refrigerator second example structure of the present invention.
Among the figure, 1: casing; 2: refrigerating chamber; 5: evaporimeter; 9: blowing fan; 10: cold air path; 21: aqua storage tank; 22: supply line; 23: open and close valve; 24: dust-collecting bucket; 27: circulation line; 28: circulating pump.
The specific embodiment
Below in conjunction with the drawings and specific embodiments defrosting device for refrigerator of the present invention is described in further detail:
Described refrigerator is by being divided into the parallel refrigerator of refrigerating chamber 2 and refrigerating chamber about dividing plate.
Defrosting device for refrigerator of the present invention is the device that drops into normal-temperature water to the upper end of evaporimeter 5, below defrosting device for refrigerator is elaborated:
The rear of casing 1 is provided with aqua storage tank 21, and the water of normal temperature can be stored in the inside of aqua storage tank 21; Upper end from a side of aqua storage tank 21 to the evaporimeter 5 of cold air path 10 inside is provided with supply line 22; Supply line 22 is provided with and opens and closes valve 23, opens and closes the upper end that valve 23 can optionally flow into the water of aqua storage tank 21 evaporimeter 5.The tail end of supply line 22 has the structure (not shown) that water is evenly flow into evaporimeter 5 upper ends.
Aqua storage tank 21 is attached on the general tap of family by independent supply line, so the water of supplying in aqua storage tank can keep temperature above freezing usually.
Lower end at the evaporimeter 5 of cold air path inside is provided with conical dust-collecting bucket 24, and dust-collecting bucket is used to be collected in the water that melts on the evaporimeter; The lower end of dust-collecting bucket 24 is provided with collector pipe 25; The lower end of casing 1 is provided with evaporating pan 26, and evaporating pan 26 is collected the water of discharging by collector pipe.The hot natural evaporation that the water conservancy of evaporating pan 26 produces with Machine Room in the refrigerator operation process 4, perhaps the user takes out evaporating pan 26, and water is outwelled.
Aqua storage tank 21 can separate setting with the rear of casing 1, also aqua storage tank 21 can be installed in the inside of casing 1.
Effect to defrosting device for refrigerator with said structure is elaborated below:
At first, before removing, stop the work of compressor and blowing fan 9, make the cold air of box house stop circulation attached to the frost on the evaporimeter 5.The open then valve 23 that opens and closes makes the water of aqua storage tank 21 flow into the upper end of evaporimeter 5 equably.At this moment, the density attached to the frost on the evaporimeter 5 is 0.2g/cm
3, and the density of water is 1g/cm
3So the density of frost is compared with the density of water, as seen frost is loosely organized.When the water of inflow evaporator 5 upper ends along the fin of evaporimeter to dirty, penetrate into the loose structure inside of frost, frost is melted at an easy rate.The water that melts, is collected in the dust-collecting bucket 24 of cold air path 10 lower ends to dirty along evaporimeter 5, finally is collected in the evaporating pan 26 by collector pipe 25 then.The water that is collected on the evaporimeter 26 is discharged to the outside by natural evaporation or by user's operation.
By defrosting device for refrigerator of the present invention frost on the evaporimeter 5 is removed.Need not to be provided with the heat releasing sources such as Defrost heater that influence the box house temperature, having significantly reduced after the defrosting running carry out freeze cycle the time the burden of evaporimeter 5.
The defrosting device for refrigerator of embodiment 2 second embodiment of the present invention need not the water supply that obtains continuing from aqua storage tank 21 shown in Figure 2, just can remove the frost on the evaporimeter 5.
As shown in Figure 3, in the defrosting device for refrigerator of the second embodiment of the present invention, in order not obtain outside water supply, and utilize the water that melts from evaporimeter 5 again from aqua storage tank 21, be provided with circulation line 27 between dust-collecting bucket 24 and aqua storage tank 21, circulation line is provided with circulating pump 28.
The course of work and first embodiment with said structure refrigerator are basic identical, just when carrying out the defrosting running, after will be in the water that evaporimeter 5 melts is collected dust-collecting bucket 24, the work by circulating pump 28 makes water flow into again in the aqua storage tank 21 along circulation line 27.
By the defrosting device for refrigerator of the second embodiment of the present invention, in order to remove the frost on the evaporimeter 5, need not to continue the outside water of supply, only need water of supply, just can in time the frost on the evaporimeter 5 be removed.
Because the circulation line 27 of dust-collecting bucket 24 lower ends is through the Machine Room 4 of the higher refrigerator of excess temperature, so can improve the temperature of the water of circulation.
In sum, the personnel that have general knowledge in technical field of the present invention can propose a lot of distortion in basic fundamental thought range of the present invention, but all in protection scope of the present invention.
Claims (2)
1, a kind of defrosting device for refrigerator, the cold air path (10) that comprises circulation box house cold air, cold air path is provided with the evaporimeter (5) that constitutes freeze cycle, it is characterized in that having the aqua storage tank (21) of storage normal-temperature water in the top of evaporimeter (5), be connected with the switching valve (23) that optionally water of aqua storage tank is fed to the evaporimeter upper end between aqua storage tank (21) and evaporimeter (5) upper end, the below of evaporimeter (5) is provided with the dust-collecting bucket (24) of collection from the water of evaporimeter (5) thawing.
2, defrosting device for refrigerator according to claim 1, it is characterized in that between dust-collecting bucket (24) and aqua storage tank (21), being connected with circulation line (27), on circulation line (27), be provided with water with dust-collecting bucket (24) and be pumped into circulating pump (28) in the aqua storage tank (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA02129142XA CN1474143A (en) | 2002-08-19 | 2002-08-19 | Defrosting device for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA02129142XA CN1474143A (en) | 2002-08-19 | 2002-08-19 | Defrosting device for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1474143A true CN1474143A (en) | 2004-02-11 |
Family
ID=34144009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA02129142XA Pending CN1474143A (en) | 2002-08-19 | 2002-08-19 | Defrosting device for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1474143A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997534A (en) * | 2011-09-13 | 2013-03-27 | 珠海格力电器股份有限公司 | Refrigerator and defrosting method thereof |
| CN105423683A (en) * | 2015-11-05 | 2016-03-23 | 海信容声(广东)冰箱有限公司 | Refrigeration device and control method thereof |
| CN105650981A (en) * | 2016-02-04 | 2016-06-08 | 青岛海尔股份有限公司 | Refrigerator |
| CN106016955A (en) * | 2016-06-06 | 2016-10-12 | 许昌学院 | Intelligent refrigerator controller and control method |
| CN106247742A (en) * | 2016-08-12 | 2016-12-21 | 合肥美菱股份有限公司 | A kind of refrigerator freezing fan defrosting device and control method thereof |
| CN107621117A (en) * | 2017-10-30 | 2018-01-23 | 广西万山香料有限责任公司 | Panel-assembled cold store for anise-oil freezing and crystallizing |
| CN111397272A (en) * | 2020-03-03 | 2020-07-10 | 青岛海尔电冰箱有限公司 | Double-system refrigerator |
-
2002
- 2002-08-19 CN CNA02129142XA patent/CN1474143A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997534A (en) * | 2011-09-13 | 2013-03-27 | 珠海格力电器股份有限公司 | Refrigerator and defrosting method thereof |
| CN105423683A (en) * | 2015-11-05 | 2016-03-23 | 海信容声(广东)冰箱有限公司 | Refrigeration device and control method thereof |
| CN105650981A (en) * | 2016-02-04 | 2016-06-08 | 青岛海尔股份有限公司 | Refrigerator |
| CN105650981B (en) * | 2016-02-04 | 2018-08-10 | 青岛海尔股份有限公司 | Refrigerator |
| CN106016955A (en) * | 2016-06-06 | 2016-10-12 | 许昌学院 | Intelligent refrigerator controller and control method |
| CN106247742A (en) * | 2016-08-12 | 2016-12-21 | 合肥美菱股份有限公司 | A kind of refrigerator freezing fan defrosting device and control method thereof |
| CN106247742B (en) * | 2016-08-12 | 2018-09-18 | 长虹美菱股份有限公司 | A kind of refrigerator freezing fan defrosting device and its control method |
| CN107621117A (en) * | 2017-10-30 | 2018-01-23 | 广西万山香料有限责任公司 | Panel-assembled cold store for anise-oil freezing and crystallizing |
| CN111397272A (en) * | 2020-03-03 | 2020-07-10 | 青岛海尔电冰箱有限公司 | Double-system refrigerator |
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