CN100432590C

CN100432590C - Refrigerator

Info

Publication number: CN100432590C
Application number: CNB2004100718102A
Authority: CN
Inventors: 沈在城; 崔峰俊; 李尙益; 郑永; 宋城浩
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2004-09-06
Filing date: 2004-09-06
Publication date: 2008-11-12
Anticipated expiration: 2024-09-06
Also published as: CN1746599A

Abstract

The present invention relates to a refrigerator which comprises a freezing chamber, a refrigerating chamber which is arranged beside the freezing chamber, a partition board used for separating the freezing chamber from the refrigerating chamber, a plurality of racks used for dividing the freezing chamber into a plurality of small regions in a vertical direction, evaporators which are installed at the lower part of back of the freezing chamber and are arranged into a plurality of rows front and rear, a separating board used for separating the part provided with the evaporators from the lower part of the freezing chamber, a screwy blowing fan which is composed of a motor, a wheel shaft and a plurality of blades, and a pipeline, wherein an inflow port through which air can flows into the freezing chamber is formed on the lower part of the separating board, and an exhaust port through which the air flowing through the evaporators can be exhausted out; the screwy blowing fan delivers air out from bottom to top in an axial direction; the motor is installed right above the evaporators, and the wheel shaft forms a long cylindrical shape and is installed on the motor in the mode of shaft connection; the wheel shaft rotates by taking a vertical shaft as the center, and the blades are formed on the outer surface of the wheel shaft and twist as well as extend to the other end in an axial direction from one end of the wheel shaft and along the outer surface of the wheel shaft to form a screwy shape. The outside of the screwy blowing fan is covered by the pipeline which extends upwards throughout from the screwy blowing fan, and the side surface of the pipeline is divided into a plurality of cold air discharge ports which are communicated with all the regions of the freezing chamber and are used for discharging cold air.

Description

Refrigerator

Technical field

The present invention relates to a kind of refrigerator.

Background technology

In general,---this kind of refrigeration cycle of condensation---expansion---evaporation that refrigerator is that cold-producing medium (drive fluid) is compressed repeatedly, make refrigerator inside keep low-temperature condition, thus make the food that leaves in the refrigerator during certain in the device of maintenance fresh state.

Aforesaid refrigerator has cooling cycle system, this cooling cycle system generally comprises following building block, be compressor, it can be heated up the gaseous refrigerant of low temperature/low pressure/pressurized treatments, thereby makes above-mentioned cold-producing medium become the gaseous refrigerant of high temp/high pressure; Condenser, it can make from above-mentioned compressor by means of extraneous air and flow into its inner cold-producing medium realization condensation; Expansion valve, its diameter is littler than the diameter of other parts, thereby can be to flow into its inner cold-producing medium reduced pressure treatment from above-mentioned condenser; Evaporimeter can make the cold-producing medium that flows through above-mentioned expansion valve evaporate under low-pressure state, thereby absorbs the heat of refrigerator inside.

Structure and effect to common two-door (side by side) side by side refrigerator describes with reference to the accompanying drawings.

As shown in Figure 1, above-mentioned refrigerator is divided into following two parts substantially, i.e. refrigerating chamber (1) realized that under the effect of evaporimeter (4) major part in the cold air of heat exchange can flow into its inside, so its temperature inside the box can remain on approximately about-18 ℃; Refrigerating chamber (2) realized that under the effect of evaporimeter (4) part in the cold air of heat exchange flow into its inside, so its temperature inside the box can keep about about 0～7 ℃.

Here, refrigerating chamber (1) and refrigerating chamber (2) are separated by dividing plate (3), cold air connected entrance (3a) is formed at the top, rear of aforementioned barriers (3), has realized that under the effect of evaporimeter (4) cold air of heat exchange can flow in the refrigerating chamber by this cold air connected entrance (3a).Cold air connected entrance (3b) is formed at the bottom of part in the case of aforementioned barriers (3), and the cold air of finishing the rising of circulation and temperature in above-mentioned refrigerating chamber (2) can flow back in the refrigerating chamber (1) again by this cold air connected entrance (3b).In addition, be used for to the inside of the cold air connected entrance (3a) of above-mentioned refrigerating chamber supply cold air the damper (not shown) being housed also, this damper is used for control and flows to the cold air of above-mentioned refrigerating chamber (2).

As shown in Figure 2, blowing fan (6) also is equipped with on the top of above-mentioned evaporimeter (4), and it can force row to refrigerating chamber (1) in the cold air that flows through the reduction of evaporimeter and temperature; Motor is used for driving said fan (6).Front in above-mentioned evaporimeter (4) is used for separating the inner space of refrigerating chamber and inner panel (7) the formation cold air delivery pipe road (10) in the space that above-mentioned evaporimeter (4) is housed.Above-mentioned inner panel (7) goes up and forms several cold gas exhausting outlets that communicate with refrigerating chamber (11), cold airflow inlet (13) is formed at the bottom of above-mentioned inner panel (7), in refrigerating chamber, finished cold air that circulation and temperature raise by above-mentioned cold airflow enter the mouth (13) flow to evaporimeter (4) again.The back basifacial of above-mentioned refrigerating chamber (1) forms Machine Room (5).

In refrigerating chamber (1) and refrigerating chamber (2), fill connection power supply under the state of food if having the refrigerator of said structure, compressor in the Machine Room will receive the control signal of being sent by controller (controller) (not shown) so, thereby starts.If above-mentioned compressor starts, so aforesaid cooling cycle system will start, and therefore, just can form heat exchange environment on every side in above-mentioned evaporimeter (4).

The cold air that flows through above-mentioned evaporimeter (4) by with the heat exchange of evaporimeter, temperature can reduce, the cold air of these low temperature can flow to the cold air delivery pipe road (10) of refrigerating chamber side under the driving of blowing fan (6) then.Next, the part in the above-mentioned cold air flow in the refrigerating chamber (1) by cold gas exhausting outlet (11), and some can flow in the refrigerating chamber (2) by cold air connected entrance (3a).This cold air is circulated throughout the back temperature and can raises in above-mentioned refrigerating chamber (1) and refrigerating chamber (2), the cold air that this temperature raises flows to evaporimeter (4) again and carries out heat exchange by inflow entrance (13).It more than is exactly the loop structure of cold air.

But, in the above-mentioned current refrigerator, the cold air flow channel that is installed in the tube shaped at refrigerating chamber rear occupies bigger space, and, cold airflow is crossed after the long row evaporimeter that is installed in above-mentioned refrigerating chamber rear, can flow in each zone of refrigerating chamber by each cold gas exhausting outlet that forms on passing away.That is to say that aforesaid air flow passage structure is path length not only, and complex structure, flow impedance is increased, and then the load that makes blowing fan and be used for driving the motor of blowing fan increases.

In addition, also there is following problem in aforesaid current refrigerator, promptly occupies certain space owing to constitute the pipeline of above-mentioned cold air flow channel, therefore the inner space of refrigerating chamber is dwindled.

Summary of the invention

In order to overcome the above-mentioned shortcoming that current refrigerator exists, the invention provides a kind of refrigerator, the present invention has improved the structure of cold air flow channel, thereby has enlarged the internal capacity of refrigerator, also reduces channel impedance simultaneously.In addition, cold air can also be entered equably the inside of refrigerator, thereby the temperature of refrigerator inside is evenly distributed.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of refrigerator is characterized in that, comprises refrigerating chamber; Be arranged on the refrigerating chamber on refrigerating chamber next door; Be used for separating the dividing plate of above-mentioned refrigerating chamber and refrigerating chamber; Above-mentioned refrigerating chamber can be separated into several racks of several zonules at above-below direction; Evaporimeter, it is installed in the rear lower portion of above-mentioned refrigerating chamber, lines up some row on fore-and-aft direction; Demarcation strip can separate part that above-mentioned evaporimeter the is housed lower part with refrigerating chamber, and its underpart forms the inflow entrance that can make the air flow evaporimeter in the refrigerating chamber, and the outlet that the air that flows through evaporimeter is discharged is formed at its top; The spirality blowing fan, be to constitute by motor, wheel shaft and several blades, can air is bottom-up along axially sending, wherein motor mounting is directly over above-mentioned evaporimeter, wheel shaft is long drum, be installed on the above-mentioned motor with the axle ways of connecting, wheel shaft can be the center rotation with vertical axle, above-mentioned several blades form on the outer surface of wheel shaft, promptly from an end of wheel shaft outer surface along wheel shaft, while twisting,, thereby form spiral-shaped until the other end towards extending axially; Pipeline can cover the outside of above-mentioned spirality blowing fan, and begins upwards to prolong from the spirality blowing fan always, and its lateral parts forms several cold gas exhausting outlets, and these cold gas exhausting outlets are connected with each zone of refrigerating chamber, are used for discharging cold air.

Aforesaid refrigerator, wherein pipeline is the drum of cross section for circle.

Aforesaid refrigerator, wherein the upper end of pipeline forms refrigerating chamber side cold gas exhausting outlet, and cold air is arranged to refrigerating chamber from the above-mentioned refrigerating chamber side cold gas exhausting outlet that refrigerating chamber and refrigerating chamber are communicated with.

Aforesaid refrigerator, wherein the upper and lower of the wheel shaft of spirality blowing fan has been clipped certain-length, the length L of wheel shaft respectively _hThan the straight length L between the two ends of blade _bLittle.

Aforesaid refrigerator, wherein the ratio of the straight length between the two ends of the length of wheel shaft and blade is 4: 6.

Aforesaid refrigerator, wherein identical length has been clipped in the upper and lower of wheel shaft.

Aforesaid refrigerator, wherein the cold gas exhausting outlet on the pipeline is made of several slotted openings, and these slotted openings form on the side of above-mentioned pipeline and each regional corresponding position.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the front elevation of current refrigerator, the structure of the cold air flow channel of display refrigerator inside

Fig. 2 is the sectional view of the major part of current refrigerator shown in Figure 1, shows the cold air flow channel structure of current refrigerator

Fig. 3 is the sectional view of major part of an embodiment of refrigerator of the present invention, shows the structure of cold air flow channel

Fig. 4 is the front elevation of refrigerator shown in Figure 3

Fig. 5 is the top cross-sectional view of the major part of refrigerator shown in Figure 3

Fig. 6 is the decomposition side view of an embodiment of spirality blowing fan in the refrigerator shown in Figure 3 and circular pipe

Fig. 7 is the sectional view of major part of another embodiment of refrigerator of the present invention

Fig. 8 a and Fig. 8 b are the side view and the front elevation of the spirality blowing fan in the refrigerator shown in Figure 7

The number in the figure explanation:

100: refrigerating chamber 110: rack

150: demarcation strip 160: the spirality blowing fan

162: wheel shaft (hub) 163: blade (blade)

165: motor (motor) 170: circular pipe (duct)

171,172: cold gas exhausting outlet 174: the cold gas exhausting outlet of refrigerating chamber side

The specific embodiment

Fig. 3 to Fig. 6 is an embodiment of refrigerator of the present invention, as shown in the figure, refrigerator of the present invention is divided into following two parts substantially, be refrigerating chamber (100), major part under the effect of evaporimeter (140) in the cold air of realization heat exchange can flow into its inside, so its temperature inside the box can remain on approximately about-18 ℃; Refrigerating chamber (200), the part under the effect of evaporimeter (140) in the cold air of realization heat exchange flow into its inside, so its temperature inside the box can keep about about 0～7 ℃.Above-mentioned refrigerating chamber (100) and refrigerating chamber (200) are separated by dividing plate (barrier) (300).

The top of aforementioned barriers (300) forms and can make cold air flow to the cold air connected entrance (310) of refrigerating chamber (200) from refrigerating chamber (100), and the bottom of dividing plate (300) forms and can make cold air be communicated with (320) from the cold air that refrigerating chamber (200) flows to refrigerating chamber (100).

In addition, in above-mentioned refrigerating chamber (100) and the refrigerating chamber (200) several racks (110) are housed respectively, these racks (110) can be separated into several zones along the vertical direction with refrigerating chamber (100) and refrigerating chamber (200).

The rear lower portion of above-mentioned refrigerating chamber (100) is equipped with evaporimeter (140), and above-mentioned evaporimeter (140) is being lined up on the fore-and-aft direction more than 2 row, and therefore, the thickness on its fore-and-aft direction is bigger, and is highly then less.The inner space of above-mentioned evaporimeter (140) and refrigerating chamber (100) is that to be separated plate (150) separated.Inflow entrance (151) is formed at the bottom of this demarcation strip (150), and the inner air of refrigerating chamber (100) can flow to evaporimeter (140) by above-mentioned inflow entrance (151).

Be equipped with lower member directly over the above-mentioned evaporimeter (140), i.e. spirality blowing fan (160), it can be bottom-up along axially sending with air; Motor (165) is used for driving spirality blowing fan (160) rotation; Circular pipe (170) can be with the cold air of being discharged by above-mentioned spirality blowing fan (160) to each regional guidance.

As shown in Figure 6, above-mentioned spirality blowing fan (160) is by constituting with the lower part, and promptly wheel shaft (162) is to be long drum, is connected on the motor (165) with the axle ways of connecting, thereby can rotates; 2 blades (163), they form on the outer surface of wheel shaft (162), promptly from an end of wheel shaft (162) outer surface along wheel shaft, while twisting towards extending axially, until the other end, thereby form spiral-shaped.

If under the driving of above-mentioned motor (165), wheel shaft (162) and blade (163) rotate at a high speed towards a direction, air will flow into from the below of spirality blowing fan (160) so, leaked-in air flows with spiral track along the surface of wheel shaft (162) and blade (163), and row upward at last.And flowed with helical trajectory towards axial by the air that above-mentioned spirality blowing fan (160) is discharged, therefore to compare with existing axial flow fan, the pressure that this spirality blowing fan is discharged air is bigger.

Above-mentioned circular pipe (170) is to be long cylindrical shape, is connected on the rear wall of refrigerating chamber (100), the outside of above-mentioned spirality blowing fan (160) can be covered.Above-mentioned circular pipe (170) not only can improve the pressure of the air of being discharged by spirality blowing fan (160), these air upwards can also be guided simultaneously, thereby cold air is flow in each zone.

Form cold gas exhausting outlet (171,172) on the side of above-mentioned circular pipe (170) and each the regional corresponding position, it is slightly forwards outstanding to be positioned at upper end outlet (171) topmost in this cold gas exhausting outlet, is nozzle (nozzle) shape; The cold gas exhausting outlet (172) that is positioned at lower end and middle part is made of several slotted openings that form a line (slot).

Certainly, can all be set as outstanding nozzle (nozzle) shape in leading slightly side to above-mentioned cold gas exhausting outlet (171,172), also can all be set as slotted opening (slot) shape that forms a line to them, if but consider the manufacture craft of circular pipe, so preferably circular pipe is made said structure.

In addition, a side of the upper end of above-mentioned circular pipe (170) forms refrigerating chamber side cold gas exhausting outlet (174), and cold air can be by this refrigerating chamber side cold gas exhausting outlet (174) row to the cold air connected entrance (310) in the formation of the top of aforementioned barriers (300).That is to say, to circular pipe 170) the top flow air in a part can flow to refrigerating chamber (200) by above-mentioned refrigerating chamber side cold gas exhausting outlet (174).

The following describes the course of work of refrigerator with said structure.

At first, along with running with the cooling cycle system headed by the compressor (not shown), evaporimeter (140) forms heat exchange environment on every side, in this case, if spirality blowing fan (160) rotates under the driving of fan motor (135), the inner air of refrigerating chamber (100) just can flow to evaporimeter (140) by the inflow (151) of demarcation strip (150) bottom so, these air can obtain cooling by the heat exchange with evaporimeter (140), and the air that has been cooled then flow into the lower end of circular pipe (170).

The cold air that flow into the lower end of above-mentioned circular pipe (170) can move to the top of circular pipe (170) afterwards flowing through spirality blowing fan (160).Cold air in this circular pipe (170) internal flow can be discharged by the cold gas exhausting outlet (172) that forms on the various piece of circular pipe (170), thereby with each zone cooling.In addition, a part that flows to the cold air of the top can be by the top zone of upper end cold gas exhausting outlet (171) row to refrigerating chamber (200), some is discharged (174) by refrigerating chamber side cold air and discharges, and these cold air can flow in the refrigerating chamber (200) via the cold air connected entrance (310) on dividing plate (300) top.

Flow into the inner cold air of refrigerating chamber (200) and can flow in the refrigerating chamber (100) with the cold air connected entrance (320) of the cold air in the refrigerating chamber (100) at last, and then restart aforesaid circulation by dividing plate (300) bottom.

Fig. 7, Fig. 8 a, Fig. 8 b have shown another embodiment of refrigerator of the present invention, among this embodiment, the structure of the spirality blowing fan (560) that is used to blow has been done some changed, thereby improved the noise reduction performance of blowing fan.

Specifically, the spirality blowing fan (560) of present embodiment has following structure, promptly in the mutual nonoverlapping scope on the outer surface of the wheel shaft (562) of hollow circle tube with certain-length, formed 2 spiral vanes (563), this blade (563) has certain length (from the lower end to the vertical length of upper end) (L _b).Here, the length (L of above-mentioned wheel shaft (562) _h) than the straight length (L of this blade (563) _b) little, the upper and lower of promptly above-mentioned wheel shaft (562) is respectively than the short certain length of above-mentioned blade (563).

The inside of above-mentioned wheel shaft (562) forms the connecting portion of one (564) with it, and this connecting portion (564) is the position that is connected with the axle (566) of drive motor (565), plays a part rotating shaft.

Length (the L of this wheel shaft (562) _h) with the straight length (L of blade (563) _b) ratio be preferably 4: 6, and the upper and lower of wheel shaft (562) preferably cut down identical length, and two edge tails of wheel shaft are equated with the difference of the length of two edge tails of above-mentioned blade (563), but also is not that requirement must be adopted this structure.

If flow into the inner space of wheel shaft (562) along the outer surface flow air of wheel shaft (562) from the below of wheel shaft (562), will produce eddy current so, but in the blowing fan of present embodiment, because certain length has been clipped in the upper and lower of wheel shaft (562), therefore can reduce the influence that above-mentioned eddy current brings.So, just can on the basis that keeps original draft capacity, reduce noise.

The present invention has following advantage, and evaporimeter is installed in and namely is installed in the lower of refrigerating chamber on the lower position The side, cold air is by being installed in a circular pipe on the refrigerating chamber rear wall discharged to regional, therefore Say that the present invention can increase the internal capacity of refrigerating chamber significantly.

Meanwhile, because the position of evaporimeter is lower, and can reduce flow impedance to greatest extent, Therefore can effectively reduce to be loaded into the load on the fan motor.

Claims

1, a kind of refrigerator is characterized in that, comprises refrigerating chamber; Be arranged on the refrigerating chamber on refrigerating chamber next door; Be used for separating the dividing plate of above-mentioned refrigerating chamber and refrigerating chamber; Above-mentioned refrigerating chamber can be separated into several racks of several zonules at above-below direction; Evaporimeter, it is installed in the rear lower portion of above-mentioned refrigerating chamber, lines up some row on fore-and-aft direction; Demarcation strip can separate part that above-mentioned evaporimeter the is housed lower part with refrigerating chamber, and its underpart forms the inflow entrance that can make the air flow evaporimeter in the refrigerating chamber, and the outlet that the air that flows through evaporimeter is discharged is formed at its top; The spirality blowing fan, be to constitute by motor, wheel shaft and several blades, can air is bottom-up along axially sending, wherein motor mounting is directly over above-mentioned evaporimeter, wheel shaft is long drum, be installed on the above-mentioned motor with the axle ways of connecting, wheel shaft can be the center rotation with vertical axle, above-mentioned several blades form on the outer surface of wheel shaft, promptly from an end of wheel shaft outer surface along wheel shaft, while twisting,, thereby form spiral-shaped until the other end towards extending axially; Pipeline can cover the outside of above-mentioned spirality blowing fan, and begins upwards to prolong from the spirality blowing fan always, and its lateral parts forms several cold gas exhausting outlets, and these cold gas exhausting outlets are connected with each zone of refrigerating chamber, are used for discharging cold air.

2, refrigerator according to claim 1 is characterized in that above-mentioned pipeline is the cross section and is circular drum.

3, refrigerator according to claim 1 and 2 is characterized in that the upper end of above-mentioned pipeline forms refrigerating chamber side cold gas exhausting outlet, and cold air is arranged to refrigerating chamber from the above-mentioned refrigerating chamber side cold gas exhausting outlet that refrigerating chamber and refrigerating chamber are communicated with.

4, refrigerator according to claim 1 and 2 is characterized in that the upper and lower of the wheel shaft of above-mentioned spirality blowing fan has been clipped certain-length, the length L of wheel shaft respectively _hThan the straight length L between the two ends of blade _bLittle.

5, refrigerator according to claim 4 is characterized in that the ratio of the straight length between the two ends of the length of above-mentioned wheel shaft and blade is 4: 6.

6, refrigerator according to claim 4 is characterized in that identical length has been clipped in the upper and lower of above-mentioned wheel shaft.

7, refrigerator according to claim 1 and 2 is characterized in that the cold gas exhausting outlet on the above-mentioned pipeline is made of several slotted openings, and these slotted openings form on the side of above-mentioned pipeline and each regional corresponding position.