CN1256563C - Evaporation device of refrigerator - Google Patents

Abstract

The present invention discloses an evaporation device of a refrigerator, which comprises an evaporator arranged in the rear of a freezing chamber in the incline method, a plurality of blowing fans arranged on the upper end of the evaporator, and a rolling mechanism into which the evaporator can be inserted, wherein the rolling mechanism can rotate by the set angle along with the rotation of the blowing fan, and thus, a flowing passage for the cold air flowing across the surface of the flow across can be transformed. The evaporation device of a refrigerator can change the bygone cold air flowing passage before the evaporator requires to defrost in the prior art to make the cold air pass through other parts without frost formation of the evaporator, and in this way, the driving set time for the defrosting operation of the evaporator can be relatively set for longer; thereby, the driving time of the refrigerator can be relatively increased, specifically the time for forming the freezing cycle can be increased, and thus, the cooling performance of the refrigerator can be conspicuously raised and the power consumption of the refrigerator is decreased.

Description

The refrigerator vaporising device

Technical field

The present invention relates to a kind of refrigerator vaporising device.

Background technology

In general, the cold air that the refrigerator refrigerating circulation system that to be a kind of utilization be made of mechanical parts such as compressor, condenser, expansion valve and evaporimeters produces reduces the temperature in the refrigerator, thereby reaches device freezing or the keeping nourishment purpose.Fig. 1 is the refrigerator structure and the circulating cold air state side sectional view of prior art.As shown in Figure 1, refrigerator is by body 100; Be positioned at two parts up and down of body 100 and have freezing, refrigeration and the keeping food function refrigerating chamber 110 and refrigerating chamber 120; Be installed in body 100 1 sides and can open and close refrigerating chamber 110 and the refrigerating chamber door 130 of refrigerating chamber 120 and refrigerating-chamber door 140; Form by compressor 150, not shown condenser, the refrigerating circulation system that evaporimeter 160 constitutes with producing cooling refrigerating chamber 110 and refrigerating chamber 120 required cold air.The effect of evaporimeter 160 is to absorb heat on every side so that refrigerant evaporation becomes gaseous state in the refrigerating circulation system.For the cold air that produces via evaporimeter 160 is discharged in each shelf 170 of refrigerating chamber 110 and refrigerating chamber 120, the back side inwall 180 of refrigerating chamber 110 and refrigerating chamber 120 is provided with cold gas exhausting outlet 190,190a.The gaseous coolant that is become low-temp low-pressure by evaporimeter 160 flow in the compressor 150, and compressed machine 150 compression backs become high-temperature high-pressure state from the low-temp low-pressure state.When then being cooled during by condenser, the gaseous coolant that is compressed into HTHP makes it to become the highly pressurised liquid state.The refrigerant that is cooled to high-pressure liquid becomes the state that evaporates easily with heat exchange method through expansion valve decompression back in evaporimeter 160, flow to then in the evaporimeter 160 that can carry out refrigerant evaporation.Refrigerant in the inflow evaporator 160 absorbs the refrigerator inside heat and will become the low-temp low-pressure gaseous coolant after the surrounding air cooling, flows into compressor 150 then again.At this moment, through absorbed by refrigerant with the heat exchange of evaporimeter 160 cold air that cools down behind the heat can under the driving of the blowing fan 200 that is arranged at evaporimeter 160 upper ends by refrigerating chamber 110 and refrigerate the cold gas exhausting outlet 190, the 190a that are provided with on 120 back side inwalls 180 and be discharged to refrigerator inside and form circulating current, thereby can reduce the internal temperature of refrigerating chamber 110 and refrigerating chamber 120.Then, the cold air that temperature raises after refrigerating chamber 110 and refrigerating chamber 120 inner loop offers evaporimeter 160 again via refrigerator pipe 210 and is cooled once more.At this moment, the cold air that offers evaporimeter 160 once more can be because the cause of mixing with extraneous air when opening and closing refrigerator doors be the low temperature and high relative humidity state, so can be at the surface of evaporimeter 160 formation one deck frost because of the temperature difference between evaporimeter 160 and the moist cold air.As shown in Figure 2, especially be to carry out under the situation at the low temperature and moisture cold air that need carry out heat exchange with evaporimeter 160 during by evaporimeter 160 along the fixing path direction that flows, the white thickness that is formed on evaporimeter 160 surfaces can increase sharply, and the formation speed of frost also can be accelerated.Owing to can hinder cold air flow by evaporimeter 160 attached to the frost on evaporimeter 160 surfaces, so the air conditioning quantity of delivering to refrigerating chamber 110 and refrigerating chamber 120 inside by blowing fan 200 can sharply descend, like this, the cooling performance of refrigerator will reduce greatly.Solution to this problem is to use the evaporimeter 160 that is provided with defrosting pipe 160a.When evaporimeter 160 surfaces form frost, can utilize defrosting pipe 160a periodically to carry out defrosting work.But need during defrosting the refrigerator refrigerating circulation system in the middle of the running is stopped, could utilizing the defrosting pipe 160a that is arranged on the evaporimeter 160 to defrost then.But when periodically defrosting, need periodically to drive the defrosting pipe 160a that is arranged on the evaporimeter 160, will increase the power consumption of refrigerator so greatly.

Summary of the invention

In order addressing the above problem, thereby to the object of the present invention is to provide a kind of relatively long driving time that can increase refrigerator relatively of setting-up time that makes defrosting, thereby can to reduce the refrigerator vaporising device of refrigerator power consumption.

In order to achieve the above object, refrigerator vaporising device provided by the invention comprises: the evaporimeter that is arranged on the refrigerating chamber rear in the inclination mode; Be arranged on a plurality of blowing fans of evaporimeter upper end; With can insert evaporimeter in it, can carry out corresponding rotation with the rotation of blowing fan, thereby the energy transform stream is through the cold air flow path of evaporator surface, and symmetry offers and can will cold air be flow in the evaporimeter on the periphery, is discharged to the cold airflow inlet of blowing fan portion and the tourelle of cold gas exhausting outlet then.

Before can need carrying out defrost operation at the evaporimeter of prior art, refrigerator vaporising device provided by the invention changes cold air flow path in the past, make cold air via the evaporimeter other parts of frosting not as yet, so just can set the driving setting-up time that is used for the evaporator defrost operation relatively longways, thereby can increase the driving time of refrigerator relatively, promptly, the time that forms freeze cycle can be increased, thereby the cooling performance of refrigerator and the power consumption of reduction refrigerator can be significantly improved.

Description of drawings

Below in conjunction with the drawings and specific embodiments refrigerator vaporising device of the present invention is elaborated.

Fig. 1 is the refrigerator structure and the circulating cold air state side sectional view of prior art.

Fig. 2 is the prior art freezer compartment of refrigerator front section view that is provided with evaporimeter and blowing fan.

Fig. 3 is state diagram after the frosting on the evaporimeter of prior art.

Fig. 4 is a freezer compartment of refrigerator forward cutaway view of the present invention.

Fig. 5 is for using three pipe evaporator stereograms in the present invention.

Fig. 6 a and Fig. 6 b are respectively tourelle front view of the present invention and side view.

Fig. 7 a and Fig. 7 b are refrigerator vaporising device active state figure of the present invention.

The specific embodiment

As Fig. 4, Fig. 5 and shown in Figure 6, refrigerator vaporising device 10 provided by the invention comprises the evaporimeter 20 that is arranged on refrigerating chamber 110 rears in the inclination mode; Be arranged on a plurality of blowing fans 30, the 30a of evaporimeter 20 upper ends; With can insert in it evaporimeter 20 and can be with the rotation of blowing fan 30,30a with the rotation of decided angle, thereby can change the cylindric tourelle 40 of the cold air flow path of the evaporimeter 20 of flowing through.Because tourelle 40 can rotate to an angle with the rotation of blowing fan, so just can change the flow passage of cold air, can will flow through on the evaporimeter 20 that fixedly installs of refrigerating chamber 110 rears the cold air flow path of fin 21,21a become as yet the other parts of not frosting.And in order to be provided with longlyer than in the past defrosting task driven setting cycle, be provided with the evaporimeter 20 of three tube shapes in the refrigerating chamber back that prior art evaporimeter 160 is set in the inclination mode, and a plurality of blowing fans 30,30a are set in the upper end of evaporimeter 20 and can insert evaporimeter 20 and can change the tourelle 40 of the cold air flow path of the evaporimeter 20 of flowing through.

In addition, in order to carry out heat exchange better than the needle tubing structure evaporimeter 160 of prior art, by on March 25th, 1999 disclosed publication number just provide a kind of new refrigerator three pipe evaporators for the Korean Patent of 99-023109, that is, this three pipe evaporators are fixedly installed on the rear of refrigerating chamber in the inclination mode.As shown in Figure 5, this evaporimeter 20 comprises first, second refrigerant pipe 22,23 that refrigerant is flow through; Be set up in parallel between two refrigerant pipes 22,23, and in the defrosting pipe 24 of heatable heater 25 of when defrosting is housed; And between first, second refrigerant pipe 22,23 and defrosting pipe 24, and in order to improve aeration thereon two ends certain spacing of being separated by offered first, second fin 21 of tabular, the 21a in a plurality of skylights 26.In order to make refrigerant pass through first, second refrigerant pipe 22,23 of three pipe evaporators 20, the end, the same side of first, second refrigerant pipe 22,23 is provided with tube connector 27.Like this, the refrigerant of the process decompression of discharging from not shown expansion valve flow in the first refrigerant pipe 22 by the inlet of the first refrigerant pipe 22, the refrigerant that flows through the first refrigerant pipe 22 then flows to the second refrigerant pipe 23 by the tube connector 27 that connects the first refrigerant pipe 22 and the second refrigerant pipe 23, and is discharged in the compressor 150 by the outlet of the second refrigerant pipe 23.As shown in Figure 4, in the present invention, can rotate simultaneously and decided angle along with the rotation of blowing fan 30,30a, blowing fan 30,30a and tourelle 40 are connected on the not shown control part together by making tourelle 40.In addition, enter into the refrigerating chamber 110 and the refrigerating chamber 120 of refrigerator, be provided with a plurality of blowing fans 30,30a in the upper end of evaporimeter 20 in order to make the cold air that has changed flow passage by tourelle 40.In addition, as Fig. 4 and shown in Figure 6, tourelle 40 has can make evaporimeter 20 be inserted in interior cylinder-like structure, and in order to make angle that its rotation simultaneously along with the rotation of blowing fan 30,30a is decided, thereby change the flow passage of cold air, relative position offers and can make under the driving of blowing fan 30,30a in the cold air elder generation inflow evaporator 20 on the periphery of tourelle 40, then is discharged to the cold airflow inlet 41 and the cold gas exhausting outlet 42 of blowing fan 30,30a portion again.

Fig. 7 a and Fig. 7 b are refrigerator vaporising device active state figure of the present invention.Shown in Fig. 7 a, when driving is arranged on the side blowing fan 30 of evaporimeter 20 upper ends at refrigerating chamber 110 rears, the wind-force that blowing fan 30 produces can make air flow through the same flow passage of cold air flow path with the prior art evaporimeter 160 of Figure 1 and Figure 2, flows into from the interior cold airflow inlet 41 that is inserted with the tourelle 40 of evaporimeter 20 then.The cold air that cold airflow inlet 41 by tourelle 40 flows into can carry out heat exchange during via the fin 21 on the evaporimeter 20 of tourelle 40 inside, 21a and obtain cooling with the refrigerant in the evaporimeter 20.Carry out being cooled to after the heat exchange cold air of uniform temperature then discharges by the cold gas exhausting outlet 42 of tourelle 40 with evaporimeter 20, and as shown in Figure 1, under the effect of blowing fan 30 via the cold gas exhausting outlet 190 that is opened in refrigerating chamber 110 and refrigerating chamber 120 back side inwalls, inside that 190a is discharged to refrigerator.The internal temperature of refrigerating chamber 110 and refrigerating chamber 120 is to be reduced to below the design temperature by the cold air that flows into.And can offering evaporimeter 20 once more by refrigerator pipe shown in Figure 1 210, the cold air that temperature has raise after the inner loop of refrigerating chamber 110 and refrigerating chamber 120 is cooled again.Because of refrigerator doors 130,140 needs often to open and close, the cold air that at this moment offers evaporimeter 20 has mixed with extraneous air and has been the low temperature and moisture state.Can be when the fin 21 of the cold air of this low temperature and moisture by evaporimeter 20,21a because of the frosting on the surface of evaporimeter 20 and fin 21,21a of the temperature difference between evaporimeter 20 and the low temperature and moisture cold air.Especially when the cold air of the low temperature and moisture cold air flow path by evaporimeter 20 be under the fixed-direction situation, the white thickness that is formed on evaporimeter 20 surfaces and fin 21, the 21a can increase sharply, simultaneously, white formation speed also can be accelerated.At this moment can hinder cold air flow attached to the frost on evaporimeter 20 surfaces, so the air conditioning quantity of delivering to refrigerating chamber 110 and refrigerating chamber 120 inside by blowing fan 30 can sharply descend by evaporimeter 20.At this moment, shown in Fig. 7 b, before carrying out defrost operation, can drive the blowing fan 30a that is arranged on evaporimeter 20 upper end opposite sides.At this moment, in be inserted with evaporimeter 20 tourelle 40 will rotate to an angle, promptly rotate to the perpendicular direction of cold air flow path that forms with the driving of blowing fan 30.When the cold airflow inlet 41 of cold air by the tourelle 40 that rotates to an angle flows into, can not flow on the other parts surface of frosting as yet on the evaporimeter 20 that be inserted in tourelle 40, and carry out heat exchange and then cool down with refrigerant in the evaporimeter 20, discharge via the cold gas exhausting outlet 42 of tourelle 40 then, be discharged in refrigerating chamber 110 and the refrigerating chamber 120 by blowing fan 30a more at last.When all knot is expired frost on the both direction cold air flow path of evaporimeter 20, carry out defrost operation again.Refrigerator vaporising device provided by the invention can be set the driving setting cycle that is used for evaporimeter 20 defrost operations relatively longways than the refrigerator of prior art, thereby can increase the driving time of refrigerator relatively, that is, the time that forms freeze cycle can be increased, thereby the cooling performance of refrigerator can be significantly improved.Especially the refrigerator effect that refrigerator vaporising device of the present invention uses for the high humility area is more remarkable.Refrigerator vaporising device of the present invention is not only applicable to the refrigerator of up-down structure, and is applicable to the refrigerator of left and right sides structure.

Claims (1)

1, a kind of refrigerator vaporising device is characterized in that: described refrigerator vaporising device comprises: the evaporimeter (20) that is arranged on refrigerating chamber (110) rear in the inclination mode; Be arranged on a plurality of blowing fans (30,30a) of evaporimeter (20) upper end; With can insert evaporimeter (20) in it, can carry out corresponding rotation with the rotation of blowing fan (30,30a), thereby the energy transform stream is through the cold air flow path on evaporimeter (20) surface, and symmetry offers and can will cold air be flow in the evaporimeter (20) by the driving of blowing fan (30,30a) on the periphery, is discharged to blowing fan (30,30a) the cold airflow inlet (41) of portion and the tourelle (40) of cold gas exhausting outlet (42) then.

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