KR101336708B1 - Blower unit for refrigerator - Google Patents

Abstract

The present invention relates to a blower of a refrigerator, the housing being provided inside the refrigerator to supply cold air from the evaporator provided in the refrigerator to the cooling space, the housing including a blower therein; And a drainage part provided in the housing to discharge the condensed water generated therein, wherein the housing is provided in a spiral shape, and the air is provided in a radial direction of the inlet port and the blower provided in the air in the direction of the rotation axis of the blower. It includes an outlet provided so that the outlet, the drain portion, is provided to penetrate the inside and outside of the housing in the radial direction of the blower, the housing is cut in the direction of the rotation axis of the blower and the housing along the radial direction of the blower It is characterized by being formed to expand outward. As a result, the wet air flowing into the blower of the refrigerator having the housing is prevented from freezing, thereby increasing the stability of the blowing fan and the efficiency of the refrigerator.

Refrigerator, Blower, Drainage

Description

Blower of refrigerator {BLOWER UNIT FOR REFRIGERATOR}

The present invention relates to a blower of a refrigerator, and more particularly, to a refrigerator having a drain for removing condensate to prevent wet air flowing into the blower of the refrigerator from condensing and freezing to reduce the efficiency of the refrigerator. It relates to a blower.

In general, the refrigerator is divided into a freezer compartment for storing the frozen storage and a refrigerating chamber for storing the refrigerated storage, and includes a freezing cycle for supplying cold air to the freezer compartment and the refrigerating chamber.

The refrigeration cycle is largely composed of a compressor, a condenser, an expansion device, and an evaporator, and the cool air generated from the evaporator is supplied through a blower fan provided at the periphery thereof and a cold air supply passage leading to the freezer compartment and the refrigerating compartment to keep the stored product at a low temperature. Let's go.

In recent years, as the storage capacity of a refrigerator increases, the length of a cold air supply passage leading to each storage space, that is, a refrigerator compartment and a freezer compartment, has increased, and the amount of cold air required for cooling the storage space has increased.

As a solution to this problem, it is conceivable to increase the size of the evaporator, but this causes a problem of increased noise and power consumption due to an increase in the performance of the compressor, and above all, the installation space of the evaporator becomes larger. The problem of relatively reducing the size of the storage space has arisen.

Next, to change the shape of the blowing fan for supplying cold air from the evaporator of the refrigerator to the storage space. That is, by providing a housing in the blower fan of the refrigerator to prevent the cold air generated from the evaporator to leak.

However, this approach has caused problems due to the defrosting apparatus generally employed to remove frost generated on the surface of the evaporator.

That is, the relatively hot humid air generated by the defrosting operation of the evaporator flows into the housing of the relatively low temperature blower to condense on the inner wall of the housing, and the condensed liquid forms an ice point on the inner surface of the housing. It grows gradually. Finally, it causes a problem of interfering with the rotation of the blowing fan that rotates inside the housing, severely causes a problem of breaking the blowing fan.

In addition, the freezing point that grows inside the housing narrows the flow path of the cold air, thereby reducing the amount of cold air supplied to the storage space of the refrigerator, thereby greatly reducing the cooling efficiency.

The present invention is to solve the above problems, to provide a blower of the refrigerator to increase the stability of the blower fan and the efficiency of the refrigerator by preventing the wet air flowing into the blower of the refrigerator having a housing to freeze. It is done.

One object of the present invention is a housing which is provided inside the refrigerator for supplying cold air to the cooling space from the evaporator provided in the refrigerator, the housing including a blower therein; And a drainage part provided in the housing to discharge the condensed water generated therein, wherein the housing is provided in a spiral shape, and the air is provided in a radial direction of the inlet port and the blower provided in the air in the direction of the rotation axis of the blower. It includes an outlet provided so that the outlet, the drain portion, is provided to penetrate the inside and outside of the housing in the radial direction of the blower, the housing is cut in the direction of the rotation axis of the blower and the housing along the radial direction of the blower It is achieved by the blower of the refrigerator, characterized in that formed by spreading out of the.

Here, the housing is cut in the direction of the rotation axis of the blower and the surface unfolded out of the housing along the radial direction of the blower may be formed in a direction opposite to the rotation direction of the blower.

The inlet may be provided adjacent to the evaporator of the refrigerator, and the outlet may be connected to a cold air supply passage formed inside the wall of the refrigerator to transfer the cold air to the storage space of the refrigerator.

The drainage part may be provided at a position closest to the ground according to a position of fixing the housing to the refrigerator.

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By the above configuration, the blower of the refrigerator according to the present invention,

First, by providing a drain in the housing of the blower to discharge the condensate generated therein, the condensate is prevented from freezing and growing inside the housing. Therefore, the problem that the blower of the blower is damaged can be prevented.

Second, by preventing the growth of the freezing point inside the housing, it is possible to prevent the problem of significantly reducing the cooling efficiency by maintaining the amount of cold air supplied to the storage space of the refrigerator.

Third, further comprising a drain guide member extending inclined downward from the drain hole or drain slit, the drain guide member is formed in a direction opposite to the rotation direction of the blower, thereby minimizing the cold air leaked from the blower to the outside The effect is to effectively remove condensate.

Refrigerator is used to freeze or refrigerate food by discharging cold air generated by a refrigeration cycle consisting of a compressor, a condenser, an expansion device, an evaporator, and lowering the temperature in the refrigerator. Top Mount-Type is located, Bottom Freezer-Type is located at the top and the freezer is at the bottom, and Side-by-side type is divided into the left and right sides of the freezer and the freezer. It is divided into (Side By Side-Type).

The blower of the refrigerator according to the present invention can be applied to the above-mentioned various types of refrigerators, but it is assumed that a case is adopted in a bottom freezer type refrigerator, which is one of the refrigerator types that are currently popular among consumers along with side by side type refrigerators. Will be explained.

1 is a cross-sectional view schematically illustrating the interior of a bottom freezer type refrigerator.

Referring to FIG. 1, the barrier 11 partitioning the refrigerator compartment 12 and the freezer compartment 13 up and down, and the refrigerator compartment door 14 and the refrigerator compartment door 15 for opening and closing the refrigerator compartment 12 and the freezer compartment 13. ), One side is in communication with the first cold air supply duct 20 installed in the barrier 11 and the first cold air supply duct 20 so as to guide the cold air generated from the evaporator 17 to the freezing compartment 13. It is installed inside the second cold air supply duct 21 and the refrigerating compartment door 14 and is supplied with cold air from the second cold air supply duct 21 through the cold air inlet 24 at the bottom thereof to defrost and supply ice water. A third cold air supply duct 40 which communicates with an ice making device 30 for storing ice and a cold air outlet 35 formed at an upper end of the ice making device 30 and supplies cold air to the cold room through the ceiling and the rear wall of the cold room. It consists of.

On the other hand, the ice making device 30 installed in the refrigerating compartment door 14 is installed in the heat insulating case 32 is installed in the heat insulating space, the heat insulating cover 31 is coupled to the heat insulating case 32 to the side of the refrigerating compartment.

In addition, a cold air inlet 24 and a cold air outlet 35 are installed at a lower side of the ice making device 30, and a second cold air supply duct communicating with the freezing chamber 13 by a side wall at the cold air inlet 24. 21 is formed.

The cold air supplied from the evaporator 17 installed on the rear wall of the freezer compartment flows through the first cold air supply duct 20 and is discharged into the freezer compartment 13 through the cold air outlet 22, and the first cold air supply duct 20 Since the cold air outlet 23 and the one side of the second cold air supply duct 21 is in communication with each other, the freezer compartment cold air flows to the second cold air supply duct 21 and is supplied to the ice maker 30. In this case, the first cold air supply duct 20 is formed in the barrier 11 to have a flow path communicating with the second cold air supply duct 21 formed on the sidewall of the refrigerator body 10.

On the other hand, a blower 100 is provided to transfer the cold air from the evaporator installed on the rear wall of the freezing chamber to the first, second, third cold air supply duct.

Hereinafter, a blower of a refrigerator according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing the appearance of the blower of the refrigerator according to the first embodiment of the present invention, Figure 3 is a view showing a housing of the blower of the refrigerator according to the first embodiment of the present invention.

2 and 3, the blower 100 of the refrigerator according to the first embodiment of the present invention is provided in the housing 120 and the housing 120 including a blower 110 therein. It is configured to include a drain 130 for discharging the condensate generated therein, and is provided inside the refrigerator to supply cold air from the evaporator provided in the refrigerator to the cooling space.

Here, the housing 120 is provided in a helical shape, and includes an inlet 121 provided to allow air to flow in the direction of the rotation axis of the blower 110 and an outlet 122 provided to allow air to flow out in the radial direction of the blower. It is provided to.

In general, the blower is composed of a blower causing a flow and a housing for guiding the flow into and out of the blower. There are several methods of classifying blowers, the most common method being classification by the characteristics of the flow through the blower, which is called axial-flow fan, radial-flow fan, mixed-flow type. Divided by a blower (Mixed-flow fan).

In the axial blower, the flow of air occurs in a direction parallel to the rotational axis of the blower, in which case the flow direction of the blower inlet and the outlet both coincide with the rotational axis. Propeller blowers, ie ordinary domestic fans, belong here. Axial blowers are used where the energy applied is primarily used to increase the velocity of the fluid, so that a lot of flow is required but not so much pressure.

Radial blowers usually use a spiral housing such that the blower inlet flow is in the direction of the axis of rotation but the outlet flow is at right angles to the axis of rotation, and the tubular housing is such that both the blower inlet and outlet flows are in the direction of the axis of rotation. It is largely distinguished. The radial type blower is mainly used for increasing the pressure by the centrifugal force, and therefore, it is widely used where the pressure is required rather than the flow rate.

Mixed flow blowers are used when an increase in flow rate and pressure is required at the same time when axial and radial flows are present in the blower. In addition, a new type of blower that does not depend on the rotation of the blower is used for a special purpose, a blower that does not require a motor using a piezoelectric element is also used.

As the blower 100 of the refrigerator according to the first embodiment of the present invention, any one of the sorted blowers may be adopted, but the helical housing 120 and the rotational axis direction of the blower 110 may be employed. By providing a radial blower provided with an inlet 121 through which air is introduced into the outlet 121 and an outlet 122 through which air flows out in the radial direction of the blower 110, the pressure of the outlet is greater than that of the storage space provided in the refrigerator. By being placed at a relatively high pressure state, it is possible to effectively discharge the cold air from the evaporator to the storage space provided in the refrigerator.

Next, the inlet 121 of the housing 120 may be installed adjacent to the evaporator of the refrigerator to prevent leakage of cold air generated from the evaporator. In addition, in order to prevent leakage of cold air transferred from the blower device 100 to the storage space of the refrigerator, it is preferable to combine the inlet of the cold air supply passage formed inside the wall of the refrigerator with the outlet of the housing as a sealing member.

Next, the drain 130 is provided to penetrate the inside and the outside of the housing in the radial direction of the blower 110, and further includes a drain slit 131 formed long in the width direction of the housing 120. desirable. This will be described in detail with reference to FIG. 3.

Referring to FIG. 3, the drainage slit 131 refers to a gap having a narrow width, and is formed in the width direction of the housing 120, and the length of the drainage slit 131 is equal to the width of the housing 120. Do. In addition, when the width t of the drainage slit 132 is increased, a problem may occur in which cold air leaks from the housing 120 through the drainage slit 131. When the width t is reduced, a problem may occur due to the surface tension of the condensate generated in the housing 120, which is connected to the drainage slit 131 to prevent drainage. Therefore, the width t of the drainage slit 131 can be obtained by the experiment within the above-described range.

On the other hand, the drain 130 is preferably provided with a drain guide member extending inclined downward from the drain slit 131. This will be described in detail with reference to FIG. 4.

4 is a view showing a state in which the drain guide member is installed in FIG.

Here, the drain guide member 132 is provided with a plate-shaped member having a length equal to the length of the drain slit 131, and any one of both side ends forming the drain slit 131. It is provided coupled to one side.

On the other hand, the drain guide member 132, in order to minimize the amount of cold air leaked through the drain slit 131 is preferably formed in a direction opposite to the rotation direction (A) of the blower, that is in a direction facing each other. Do.

Because, the flow direction of air generated by the rotation of the blower can be obtained by the sum of the radial velocity component of the blower and the tangential velocity component of the outer peripheral surface of the blower generated by the rotation of the blower. Can be. Accordingly, the drain guide member 132 is opposed to the direction of rotation A of the blower, that is, by the rotation of the blower to prevent cold air leaking through the drain slit 131 by the rotation of the blower. By forming the flow direction and the inner surface of the drain guide member 132 facing each other, it is possible to obtain an effect of minimizing the amount of cold air leaked through the drain slit 131.

On the other hand, since the drain portion 130 is provided to discharge the condensed water condensed in the housing 120, it is effective to provide the condensate at the point where the gravity is collected by gravity. Therefore, it is preferable that the refrigerator is provided at the position closest to the ground according to the position at which the housing 120 is fixed.

The operation by the configuration of the blower of the refrigerator according to the first embodiment of the present invention described above is as follows.

As the operation of the refrigerator continues, frost is caught on the surface of the low temperature evaporator, and a defrosting operation for removing frost on the surface of the evaporator is periodically performed by a control circuit provided in the refrigerator. At this time, the relatively high temperature humid air generated by the defrosting operation of the evaporator flows into the housing 120 of the relatively low temperature blower to condense inside the housing 120. The condensed wet air is collected at the lowest point of the housing 120 along the inner wall surface of the housing 120 by gravity, and drained out of the housing 120 through the drain slit 131 formed at the lowest point. Will be. In addition, the drain guide member 132 fixed to the drain slit 131 has a function of buffering the condensed water to be prevented from scattering and blocking leakage of cold air generated by a blower rotating inside the housing 120. Function

As a result, an effect of preventing freezing occurring inside the housing while minimizing leakage of cold air is obtained.

Hereinafter, a blower of a refrigerator according to a second embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this description, the matters overlapping with the description of the above-described first embodiment will be replaced by the following.

5 is a view showing a housing of the blower of the refrigerator according to the second embodiment of the present invention, Figure 6 is a view showing a state in which the drain guide member is installed in FIG.

5 and 6, the blower of the refrigerator according to the second embodiment of the present invention, is provided inside the refrigerator to supply cold air from the evaporator provided in the refrigerator to the cooling space, the blower therein It includes a housing 220 and a drain portion 230 provided in the housing 220 for discharging the condensed water generated therein.

Here, the drainage part 230 is provided to penetrate the inside and the outside of the housing 220 in the radial direction of the blower, and the plurality of drainage holes 231 provided to be discrete in the width direction of the housing 220. It is provided with.

In addition, the drain portion 230, it is preferable to further include a drain guide member 232 is provided to extend inclined downward from the drain hole (231).

The drain guide member 232 is preferably formed in a direction opposite to the rotation direction A of the blower.

On the other hand, the drain 230 is preferably provided at the position closest to the ground according to the position of fixing the housing 220 to the refrigerator.

Hereinafter, a blower of a refrigerator according to a third embodiment of the present invention will be described in detail with reference to the accompanying drawings.

7 is a view showing the housing of the blower of the refrigerator according to the third embodiment of the present invention.

Referring to FIG. 7, the blower of the refrigerator according to the third embodiment of the present invention is provided inside the refrigerator to supply cold air from the evaporator provided in the refrigerator to the cooling space, and includes a blower therein. And a drain 330 provided in the housing 320 and for discharging the condensed water generated therein.

Here, the drain portion 330 is provided to penetrate the inside and the outside of the housing in the radial direction of the blower, the housing 320 is cut in the direction of the rotation axis of the blower the housing (along the radial direction of the blower ( It is formed by spreading out of 320. The drainage part 330 has a through hole 331 through which the housing 320 is cut in the direction of the rotation axis of the blower and the housing 320 is cut in the direction of the rotation axis of the blower, thereby reducing the radial direction of the blower. Accordingly, the surface 332 is provided to the outside of the housing 320.

In addition, the drain 330 is preferably provided at the position closest to the ground according to the position of fixing the housing 320 to the refrigerator.

On the other hand, it is preferable that the surface 332 cut out and spread out of the housing 320 is formed in a direction opposite to the rotation direction A of the blower.

The foregoing has been shown and described with respect to specific embodiments of the invention. However, the present invention can be embodied in various forms without departing from its spirit or essential characteristics, so that the above-described embodiments should not be limited by the details of the detailed description, Even those embodiments which are not individually listed in the description should be construed broadly within the spirit and scope defined in the appended claims. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1 is a cross-sectional view schematically showing the interior of a bottom freezer type refrigerator;

2 is a view showing the appearance of a blower of the refrigerator according to the first embodiment of the present invention;

3 is a view showing the housing of the blower of the refrigerator according to the first embodiment of the present invention;

4 is a view showing a state in which the drain guide member is installed in FIG.

5 is a view showing a housing of the blower of the refrigerator according to the second embodiment of the present invention;

6 is a view showing a state in which the drain guide member is installed in Figure 5, and

7 is a view showing the housing of the blower of the refrigerator according to the third embodiment of the present invention.

**** Explanation of reference numerals for main parts of drawings

11: Barrier 12: Cold Room

13: freezer 17: evaporator

100: blower 110: blower

120 housing 121 inlet

122: outlet 130, 230, 330: drain

131: drainage slit 231: drainage hole

132, 232, 332: drain guide member

Claims (9)

It is provided inside the refrigerator to supply cold air from the evaporator provided in the refrigerator to the cooling space. A housing including a blower therein; And And a drain provided at the housing to discharge the condensed water generated therein. The housing is provided in a helical shape, the inlet is provided so that the air flows in the direction of the rotation axis of the blower and the outlet is provided so that the air flows in the radial direction of the blower, The drainage part is provided to penetrate the inside and the outside of the housing in the radial direction of the blower, and the housing is formed by cutting in the direction of the rotation axis of the blower and spreading out of the housing along the radial direction of the blower. Blower of the refrigerator. The method of claim 1, The blower of the refrigerator, characterized in that the housing is cut in the direction of the rotation axis of the blower and the surface extending out of the housing along the radial direction of the blower is formed in a direction opposite to the rotation direction of the blower. delete delete delete The method of claim 1, The inlet is provided adjacent to the evaporator of the refrigerator, the outlet is a blower of the refrigerator characterized in that it is connected to the cold air supply passage formed inside the wall of the refrigerator to transfer the cold air to the storage space of the refrigerator. The method according to any one of claims 1, 2 and 6, The drainage unit, the blower of the refrigerator, characterized in that provided in the position closest to the ground in accordance with the position for fixing the housing to the refrigerator. delete delete

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