CN100337079C

CN100337079C - Axial-flow fan of refrigerator

Info

Publication number: CN100337079C
Application number: CNB031197892A
Authority: CN
Inventors: 郑多云
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: Taizhou LG Electronics Refrigeration Co Ltd
Priority date: 2003-03-12
Filing date: 2003-03-12
Publication date: 2007-09-12
Anticipated expiration: 2023-03-12
Also published as: CN1530609A

Abstract

The present invention relates to an axial flow fan. The axial flow fan promotes cold air of the heat exchange of an evaporator to easily circulate in a cold air circuit and a holding space of a refrigerator, a rotating axle of a drive motor is forcibly inserted into an insertion slot at the axle center of the axial flow fan, and therefore, the refrigerator is arranged in a rotary mode. The present invention is characterized in that an inlet port part of the insertion slot of the axle center of the axial flow fan forms a trapezoidal frame with a sloping edge; a rotating axle guiding part and the inlet port part of the insertion slot of the axle center are combined; the rotating axle guiding part of the drive motor in the insertion slot of the axle center has the proportion of 3:1 of the inserting direction to the vertical direction. Therefore, the rotating axle of the drive motor and the axial flow fan can be easily arranged in the narrow working space.

Description

The aerofoil fan of refrigerator

Technical field

The present invention relates to the axial flow fan structure of refrigerator, more detailed saying so about being easily mounted on the rotating shaft of drive motors the structure in the insertion groove of aerofoil fan axle center.

Background technology]

Generally speaking, refrigerator is divided into ice making and the refrigerating chamber of frozen food and the refrigerating chamber that stores the refrigeration thing under design temperature.The cold air of being changed by the cold-producing medium of loop cycle supplies in refrigerating chamber and the refrigerating chamber cabinet, in order to long-life food prod.

Fig. 1-Fig. 3 is the refrigerator structure chart of prior art.Fig. 1 is a front elevation, and Fig. 2 is the A-A ' sectional drawing of Fig. 1, and Fig. 3 is the A-A of Fig. 1 " sectional drawing.

As shown in the figure, existing refrigerator is distinguished refrigerating chamber 2 and refrigerating chamber 4 by the dividing plate 5 of heat-barrier material system, forms condenser chamber 1 and the cold air distributor chamber 15 that is distinguished by freezing lid 12 at the rear side of refrigerating chamber 2.

Evaporimeter 6 is installed in the condenser chamber 1, and the cold-producing medium by low temperature, low pressure carries out heat exchange.Part cold air drives by being installed in the aerofoil fan 8 that rotates on the drive motors, passes freezing lid 12 and supplies with refrigerating chamber 2.The cold air of remaining part freely descends along above-mentioned freezing lid 12, supplies with refrigerating chamber 4.

The air entry of cold air side condensing cover 12 below of supplying with to refrigerating chamber 4 sucks, and the cool-air feed loop 31 through the formation of air entry below offers refrigerating chamber 4.

Be arranged on the back side or the side of refrigerating chamber 4 to the exhaust outlet of refrigerating chamber 4 cool-air feeds, also can the back side and the side have.For the equilibrium cooling of refrigerating chamber 4 inside, cold gas exhausting outlet should be by suitable quantity setting in position.

Fig. 1-Fig. 3 shows that all there is cold gas exhausting outlet the back side and the side of existing refrigerator storage chamber interior.

Form 2 branch loops, air feed loop, left side 32 and air feed loop, right side 33 from the cool-air feed loop 31 that refrigerating chamber 2 extends in dividing plate inside.

The cold air supplied with of air feed loop 32 to the left, a part is discharged from a plurality of back side exhaust outlet 30a through the air feed loop, the back side 30 at the refrigerating chamber back side, and another part is by the left side exhaust outlet 32a discharge of refrigerating chamber 4 left surfaces.

The cold air of air feed loop 33 supplies is discharged by the right side exhaust outlet 33a of refrigerating chamber 4 right flanks to the right.

The process said process carries out heat exchange to the cold air of refrigerating chamber 2 and refrigerating chamber 4 supplies and the food of inner preservation, becomes the air of relatively-high temperature, and the refrigerating chamber of process dividing plate inside returns air circuit 2a and refrigerating chamber returns air circuit 4a, comes back near the evaporimeter 6.

In order to allow cold air pass through these cold air loops and receiving space circulates smoothly, aerofoil fan 8 and drive motors 16 should adopt suitable space structure.

Fig. 4 and Fig. 5 show that existing aerofoil fan 8 by refrigerator adopts 81 li of the insertion grooves in the axle center 80 in rotating shaft 160 its centres of pressure insertion of drive motors, allows aerofoil fan 8 and rotating shaft 160 rotate together.

But aerofoil fan 8 is installed in the very narrow space that forms between the locular wall of freezer chamber of refrigerator 2 and the freezing lid 12.For rotating shaft 160 rotations of aerofoil fan 8 with drive motors, the rotating shaft of forcing to insert 81 li of insertion grooves 160 will guarantee that suitable insertion length is arranged, therefore, aerofoil fan 8 has sizable difficulty with the operation that drive motors 16 is installed together, and becomes the problem that exists in the refrigerator production always.

Summary of the invention

The present invention provides the more refrigerator aerofoil fan of advanced configuration in order to address the above problem, and also the drive motors rotating shaft can be installed easily under narrow working space.

The present invention in order to achieve the above object, circulate with the cold air that promotes the evaporimeter heat exchange cold air loop and receiving space by refrigerator, the rotating shaft of drive motors is forced to insert in the insertion groove in aerofoil fan axle center, and the aerofoil fan of refrigerator can be installed rotatably.For the rotating shaft of drive motors being easily mounted in the insertion groove in aerofoil fan axle center, the insertion groove inlet portion in the axle center forms lopsided trapezium structure, and the rotating shaft guide portion in the insertion groove of axle center has direction of insertion to 3: 1 ratio of vertical direction.

Description of drawings

Fig. 1 is the front elevation of the refrigerator structure of prior art.

Fig. 2 is the A-A ' sectional drawing of Fig. 1.

Fig. 3 is the A-A of Fig. 1 " sectional drawing.

Fig. 4 is the front elevation of the refrigerator aerofoil fan of prior art.

Fig. 5 is the side view of refrigerator aerofoil fan of prior art and the sectional drawing of axial portions.

Fig. 6 is the sectional drawing of refrigerator aerofoil fan axial portions of the present invention.

Among the figure, 1-condenser chamber, the 2-refrigerating chamber, the 2a-refrigerating chamber returns air circuit, the 4-refrigerating chamber, the 4a-refrigerating chamber returns air circuit, 5-dividing plate, 6-evaporimeter, the 8-aerofoil fan, 12-condensing cover, 15-cold air distributor chamber, 16-drive motors, air feed loop, the 30-back side, 30a-back side exhaust outlet, 31-cool-air feed loop, air feed loop, 32-left side, 32a-left side exhaust outlet, air feed loop, 33-right side, 33a-right side exhaust outlet, 80-axle center, the 81-insertion groove, 82-rotating shaft guide portion, 160-rotating shaft.

The specific embodiment

Now described with regard to the specific embodiment of the present invention with reference to the accompanying drawings.

The present invention that shown in Figure 6 is is installed in the locular wall of refrigerating chamber 2 and cooling and covers between 12 the very structure of small space.For drive motors 16 rotating shafts 160 are easily mounted on 81 li of the insertion grooves in axle center and make aerofoil fan 8 with drive motors rotating shaft 160 rotations, 81 li rotating shafts 160 of forcing to insert of insertion groove will be guaranteed suitable insertion length, insertion groove inlet portion in the axle center forms lopsided trapezium structure, and the insertion groove in rotating shaft guide portion and axle center makes up at the insertion groove inlet portion.

Rotating shaft guide portion 82 is inserted 81 li of aerofoil fan 8 axle center insertion grooves by certain angle in narrow space, play the effect of drive motors rotating shaft 160 and aerofoil fan 8 easy combinations.Rotating shaft guide portion 82 is inserted to insertion groove 81 inboard pressures, is limited to proper depth.

Rotating shaft guide portion 82 in the insertion groove of axle center has direction of insertion to 3: 1 ratio of vertical direction.

The invention provides the refrigerator aerofoil fan that the advanced configuration more of drive motors rotating shaft also can be installed easily under narrow working space.

Claims

1, a kind of aerofoil fan of refrigerator, it is characterized in that: the rotating shaft of drive motors is forced to insert in the insertion groove in aerofoil fan axle center, insertion groove inlet portion in the axle center forms lopsided trapezium structure, and the insertion groove in rotating shaft guide portion and axle center makes up at the insertion groove inlet portion; Drive motors rotating shaft guide portion in the insertion groove of axle center has direction of insertion to 3: 1 ratio of vertical direction.