JP2002130188A - Blower and cooling apparatus having blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling apparatus for preventing progress of icing to a blower, reducing noises, and capable of stably keeping a storage room at a prescribed temperature. SOLUTION: This blower 19 for blowing cold air of a cooler 11 drops down water sticking by dewing and defrosting along a draining part 18 by arranging the draining part 18 formed in a flange shape larger than a boss diameter of an axial fan 20 in a motor support part 22, and prevents the water from intruding inside the axial fan 20. The blower 19 is slantingly installed so that a drain hole 26 becomes the lower side to make the water gathered in a bag- shaped space part 25 of a case 21 by the dewing and the defrosting easily flow to the drain hole 26, and prevents a state of making progree of the icing while gathering the water in the case 21, and prevents the occurrence of a contact sound and a restricting state of the blower 19 by the icing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower used in a cooling atmosphere and a cooling device such as a refrigerator provided with the blower.

[0002]

2. Description of the Related Art Conventionally, an axial-flow type blower aimed at miniaturization and power saving has been known.
It is easily conceivable that the present invention is applied to cooling devices such as refrigerators, showcases, ice machines, vending machines, and various types of air conditioners.

A conventional blower is disclosed in Japanese Patent Application Laid-Open No. Hei 6-1089.
There is the one disclosed in Japanese Patent Publication No. Hereinafter, the conventional blower will be described with reference to the drawings.

FIG. 7 is a sectional view of a conventional blower. FIG.
, 1 is an axial fan, which is attached to the case 2. The case 2 divides the suction side and the discharge side with respect to the axial flow fan 1, and surrounds the axial flow fan 1 at a predetermined interval so as to facilitate the flow of air from the suction side to the discharge side. It has a formed mouth ring 3.

Although there is no clear description of the portion of the case 2 where the axial fan 1 is mounted, it is natural that the case 2 has a support for mounting the axial fan 1.
In general, a motor support 4 having a diameter substantially equal to the diameter of the boss of the axial flow fan 1 is provided at the center of the case 2.

FIG. 8 is a cross-sectional view of a blower for reducing noise and increasing wind pressure. In FIG. 8, the case 5 surrounds the axial fan 1 at a predetermined interval with a mouth ring 6, has an opening 7 facing the axial fan 1, and forms a bag-shaped space 8.

[0007]

However, in the case where a conventional blower as shown in FIG. 7 is applied to a cooling device such as a refrigerator and is arranged close to a cooler, dew condensation or defrost due to moisture from outside the refrigerator is required. Freezing proceeds with the water melted in the axial flow fan 1 and the mouth ring 3 attached to the axial flow fan 1, or water enters the axial flow fan 1 through the motor support portion 4, resulting in contact noise due to icing. And the noise of the entire cooling device increases, or the storage chamber reaches a constrained state and cannot stably maintain the storage room at a predetermined temperature.

When a conventional blower as shown in FIG. 8 is disposed close to a cooler, water melted by dew condensation or defrost enters through an opening 7 of a mouth ring 6 and a bag-shaped case 5 is formed. The same problem as described above arises in that the ice accumulates in the space 8 and freezes.

The present invention solves the conventional problems.
To provide a cooling device that can prevent noise increase and restraint condition from occurring due to the progress of freezing, and can keep the storage room at a predetermined temperature with low noise by operating the blower normally. The purpose is to do.

[0010]

According to a first aspect of the present invention, there is provided an axial fan, and a case formed with a mouth ring surrounding the axial fan at a predetermined interval. Wherein the axial fan is attached to a motor support provided at the center of the case, and the motor support is provided with a drainer, wherein water adheres to the motor support. Even so, the water falls down along the drain section, and thus has an effect of preventing water from entering the inside of the axial fan.

According to a second aspect of the present invention, in the first aspect, the drain portion is provided on the outer periphery of the motor support portion and has a flange shape larger than the boss diameter of the axial fan. This is a blower, and the water adhering to the motor supporting portion flows along the flange-shaped drainage portion and falls down without wrapping around the axial fan, and thus has an effect of preventing water from entering the inside of the axial fan.

According to a third aspect of the present invention, there is provided an axial fan,
A case provided with a mouth ring that forms a bag-shaped space at predetermined intervals around the axial fan,
The blower is characterized in that a drain hole is provided in the bag-shaped space portion of the case, and has an action of discharging water from the drain hole even if water enters through the opening of the mouth ring and accumulates in the case. .

According to a fourth aspect of the present invention, there is provided a blower according to the third aspect, wherein the case has a rectangular shape, and a plurality of drain holes are provided at least diagonally. Even if the direction is not limited, there is an effect that the position of the drain hole is set at the lowest part.

According to a fifth aspect of the present invention, there is provided a blower according to the first or fourth aspect, wherein the surface of the case is subjected to a hydrophilic treatment. Even if it adheres to the part, there is an effect that the water easily flows by the hydrophilic treatment.

[0015] The invention according to claim 6 is the invention according to claims 1 to 5.
A cooling device characterized in that the blower according to any one of the above is provided in a cooling atmosphere of a cooler, and when water adheres to the blower due to dew or defrost due to the cooling atmosphere, the water adheres to the motor support portion. Water is prevented from entering the inside of the axial fan, and water that has entered through the mouth ring opening and accumulated in the case has the function of being discharged from the drain hole.

According to a seventh aspect of the present invention, there is provided a cooling device in which the blower according to the third aspect is mounted in a cooling atmosphere of a cooler such that a drain hole is located at a lowermost position. Due to the frost, water that has entered the opening of the mouth ring and accumulated in the case has an effect of easily flowing toward the drain hole.

According to an eighth aspect of the present invention, the case of the blower according to the third aspect has a rectangular shape, and a drain hole is disposed at a corner portion. A cooling device characterized by being installed at an angle.Even if it is a rectangular case with a side, the side is inclined so that water that has entered from the opening due to condensation or defrost does not collect, and It has the effect of making it easier to flow.

According to a ninth aspect of the present invention, there is provided a cooling apparatus, wherein the blower according to the fourth aspect is mounted in an inclined manner in a cooling atmosphere of a cooler such that a drain hole is located at a lowermost position. There is an effect that the position of the drain hole is set to the lowest part without limiting the mounting direction of the water drain hole.

According to a tenth aspect of the present invention, there is provided a cooling device according to any one of the seventh to ninth aspects, wherein the blower is mounted so that the drain hole faces the cooler. It is a device that has the function of making water accumulated in the case more easily due to dew condensation and defrost flow into the drain hole, and that water flowing out of the drain hole is drained from the drain hole below the cooler.

According to an eleventh aspect of the present invention, in the refrigerator according to any one of the seventh to ninth aspects, the blower is rotated immediately before the end of the defrosting of the cooler. Immediately before the end of the frost, the fan motor is rotated, and the ambient temperature is raised by the heat generated by the motor to melt frost and ice adhering to the fan motor.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a blower according to the present invention and a cooling device provided with the blower will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a main part of a refrigerator which is a cooling device provided with a blower according to Embodiment 1 of the present invention. FIG. 2 is a front view of a blower used for the refrigerator of the embodiment. FIG. 3 is a cross-sectional view of a blower used for the refrigerator of the embodiment.

In FIG. 1, reference numeral 9 denotes a refrigerator main body as an example of a cooling device, 10 denotes a refrigerator room provided in the refrigerator main body 9, and a cooler 11 is disposed on the back side of the refrigerator room 10; The inside rear duct 12 which forms an air passage for circulating cool air is attached so as to cover the inside, and a blower 13 is attached to the inside rear duct 12.

2 and 3, the blower 13 includes an axial fan 14 and a case 15, and the axial fan 14
Is mounted on a motor support 16 located at the center of the case 15. The case 15 divides the suction side and the discharge side with respect to the axial fan 14, and surrounds the axial fan 14 at a predetermined interval in order to facilitate the flow of air from the suction side to the discharge side. The mouth ring 17 is formed on the outer periphery of the motor support 16 and the axial fan 14
A draining portion 18 having a flange shape larger than the boss diameter is provided.

The operation of the refrigerator configured as described above will be described below.

Since the blower 13 is disposed close to the cooler 11, the blower 13 is cooled to zero degree or lower by the cool air generated by the cooler 11, and water condensed by moisture from the outside of the refrigerator or defrosted and melted. Adhere to. At this time, the water adhering to the motor support portion 16 of the case 15 falls down along the flange-shaped drainage portion 18, so that the water does not enter the inside of the axial flow fan 14, and the water enters and freezes. Can be prevented. Because of this,
It is possible to prevent the occurrence of contact noise between the fan and the ice and to prevent the cooling from being impossible due to the restriction of the fan due to icing, and to provide a highly reliable forced-ventilated refrigerator.

By performing the hydrophilic treatment on the surface of the case 15, water attached to the motor support portion 13 and the mouth ring 17 can easily flow, and the drainage can be performed more smoothly.

When the blower 13 is rotated immediately before the end of the defrosting, the ambient temperature of the blower 13 rises due to the heat generated by the motor, so that the frost or ice that has not been completely melted by the defrost and remains on the blower 13 can be melted. Therefore, it is effective to prevent further freezing.

(Embodiment 2) FIG. 4 is a perspective front view of a main part of a refrigerator which is a cooling device provided with a blower according to a second embodiment of the present invention, and FIG. 5 is a view showing a blower applied to the refrigerator of the embodiment. FIG. 6 is a sectional view of a blower applied to the refrigerator of the embodiment.

In FIG. 4, a blower 19 is mounted on a rear duct 12 inside the refrigerator, which forms an air passage for circulating cool air so as to cover the cooler 11.

5 and 6, the blower 19 is composed of an axial fan 20 and a rectangular case 21. The axial fan 20 is a motor support 2 located at the center of the case 21.
2 attached. Case 21 is a mouse ring 23
The mouth ring 23 separates the suction side and the discharge side with respect to the axial fan 20 and surrounds the axial fan 20 at a predetermined interval to reduce noise and increase wind pressure. In addition, a bag-shaped space portion 25 is formed having an opening 24 facing the axial fan 20.

The case 21 is provided with a drain hole 26 at a diagonal corner, and the blower 19 is attached to the inside rear duct 12 at an angle so that the drain hole 26 is on the lower side. Further, the blower 19 has a drain hole 26 for the cooler 11.
To the inside rear duct 12 so as to face toward the side.

The operation of the refrigerator configured as described above will be described below.

Since the blower 19 is disposed close to the cooler 11, the blower 19 is cooled to a temperature below zero by the cool air generated in the cooler 11, and water condensed by moisture from the outside of the refrigerator or defrosted and melted. It enters through the opening 24 of the mouth ring 23 and accumulates in the bag-like space 25 of the case 21. At this time, blower 1
9 is mounted so as to be inclined toward the drain hole 26, so that the horizontal sides corresponding to the upper and lower sides of the rectangular case are also inclined, and the bag-shaped space portion 25 is formed.
The water that has accumulated in the water can easily flow toward the drain hole 26 along the lateral side, and it is possible to prevent a state in which icing proceeds while the water remains in the bag-shaped space 25.

Further, in the blower 19, the drain hole 26 is
Since the water is inclined so as to face 1, the water can easily flow into the drain hole 21, and the water flowing out from the drain hole 26 can be discharged to the outside from a drain hole (not shown) provided at a lower portion of the cooler 11. I can do it.

Note that the blower 19 is
To install the fan, the direction of the blower must be fixed at the same time. However, if a plurality of drain holes 26 are provided at least on the diagonal line, it is possible to give a degree of freedom in mounting to the direction of the blower. .

Further, in this embodiment, the case 21 is formed in a square shape. However, the present invention is not limited to this. For example, the case 21 may be formed in a circular shape. Inevitably, water can be guided to the drain hole 26.

In the above embodiment, the refrigerator has been described, but as described above, the refrigerator (including the freezer)
However, the present invention is not limited to such a case, and a cooling device such as a showcase, an ice machine, a vending machine, and various types of air conditioners that exerts a cooling function by a cooler can achieve the same effect in the same configuration.

[0039]

As described above, the first aspect of the present invention comprises an axial fan and a case formed with a mouth ring surrounding the axial fan at a predetermined interval. The axial flow fan is attached to a motor support provided in a central portion of the case, and the blower is provided with a drain portion in the motor support, wherein water adheres to the motor support. However, since water does not fall down along the drain and does not enter the axial fan, it prevents contact noise and restraint due to icing even in a low-temperature atmosphere, resulting in low noise. It is possible to provide a blower that performs stable operation.

According to a second aspect of the present invention, in the first aspect of the present invention, the drain portion is provided on the outer periphery of the motor support portion and has a flange shape larger than the boss diameter of the axial fan. This is a blower, and water adhering to the motor support flows along the flange-shaped drainage section, falls down without sneaking into the axial fan, and does not enter the axial fan. Even if it is placed, it is possible to prevent the occurrence of contact noise and restraint due to freezing.

According to a third aspect of the present invention, there is provided an axial fan,
A case provided with a mouth ring that forms a bag-shaped space at predetermined intervals around the axial fan,
The blower is characterized in that a drain hole is provided in the bag-like space portion of the case, and water can be discharged from the drain hole even if water enters from the opening of the mouth ring and accumulates in the case. Therefore, it is possible to prevent icing from progressing with water remaining in the case even in a low-temperature atmosphere, and to prevent the occurrence of contact noise and restraint due to icing.

According to a fourth aspect of the present invention, there is provided a blower according to the third aspect, wherein the case has a rectangular shape, and a plurality of drain holes are provided at least diagonally. Even if the direction is not limited, since the position of the drain hole is set to the lowest part, the degree of freedom can be given to the use posture of the blower.

According to a fifth aspect of the present invention, there is provided a blower according to the first or fourth aspect, wherein the surface of the case is subjected to a hydrophilic treatment. Even if it adheres to the part, the water is easily flowed by the hydrophilic treatment, so that the drainage can be performed more smoothly.

[0044] The invention according to claim 6 is the invention according to claims 1 to 5.
A cooling device characterized in that the blower according to any one of the above is provided in a cooling atmosphere of a cooler, and when water adheres to the blower due to dew or defrost due to the cooling atmosphere, the water adheres to the motor support portion. Water is prevented from entering the inside of the axial fan, and water that has entered the mouth ring opening and accumulated in the case can be drained from the drain hole. It is possible to provide a cooling device that can prevent the problem beforehand, that has low noise, and that stably keeps the storage room at a predetermined temperature.

According to a seventh aspect of the present invention, there is provided a cooling apparatus wherein the blower according to the third aspect is mounted in a cooling atmosphere of a cooler such that a drain hole is located at a lowermost position. Due to the frost, the water that has entered the mouth ring opening and accumulated in the case can easily flow toward the drain hole, preventing the icing from proceeding with the accumulated water in the case and preventing the contact sound due to the icing of the blower It is possible to provide a cooling device which can prevent the occurrence of the restraint state, and can keep the storage room at a predetermined temperature stably with low noise.

According to an eighth aspect of the present invention, the case of the blower according to the third aspect has a rectangular shape, and a drain hole is arranged at a corner portion, and the cooling air of the cooler is set so that the drain hole is located at the bottom. This is a cooling device characterized by being installed at an angle to the water, even if it is a rectangular case with a horizontal side, water that has entered through the opening of the mouth ring due to condensation and defrost and accumulated in the case to the drain hole Since it is easier to flow toward the water, it prevents freezing from progressing with water remaining in the case, preventing the occurrence of contact noise and restriction due to freezing of the blower, low noise and keeping the storage room at a predetermined temperature. It is possible to provide a cooling device that keeps the temperature stable.

According to a ninth aspect of the present invention, there is provided a cooling apparatus characterized in that the blower according to the fourth aspect is mounted at an angle in a cooling atmosphere of a cooler such that a drain hole is located at a lowermost position. Even if the mounting direction is not limited, the position of the drain hole is set at the lowest part, so that the degree of freedom in mounting the blower can be given.

According to a tenth aspect of the present invention, there is provided the cooling device according to any one of the seventh to ninth aspects, wherein the blower is mounted so that the drain hole faces the cooler. It is a device, and the water that has accumulated in the case due to condensation and defrosting can flow more easily to the drain hole, and the water that has flowed out of the drain hole is drained from the drain hole at the bottom of the cooler. It is possible to prevent the icing from progressing, and to prevent the occurrence of the contact noise and the restraint state due to the icing of the blower.

An eleventh aspect of the present invention is the refrigerator according to any one of the seventh to ninth aspects, wherein the blower is rotated immediately before the end of the defrosting of the cooler. By rotating the fan motor immediately before the end of defrost, the ambient temperature is raised by the heat generated by the motor, and the frost and ice adhering to the fan motor are melted to prevent further freezing, and the contact due to the freezing of the blower It is possible to prevent the occurrence of a sound or a restraint state.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a front view of the blower of the refrigerator in the embodiment.

FIG. 3 is a sectional view of the blower of the refrigerator in the embodiment.

FIG. 4 is a perspective front view of a main part of a refrigerator according to a second embodiment of the present invention.

FIG. 5 is a front view of the blower of the refrigerator in the embodiment.

FIG. 6 is a sectional view of the blower according to the embodiment;

FIG. 7 is a sectional view of a conventional blower.

FIG. 8 is a sectional view of a conventional blower.

[Explanation of symbols]

 9 Refrigerator 11 Cooler 13, 19 Blower 14, 20 Axial fan 15, 21 Case 16, 22 Motor support 17, 23 Mouth ring 18 Drain section 25 Bag-shaped space section 26 Drain hole

Claims (11)

[Claims] An axial fan and a case formed with a mouth ring surrounding the axial fan at a predetermined interval around the axial fan, wherein the axial fan is a motor support provided at a central portion of the case. A blower mounted on the motor support, wherein the motor support is provided with a drainer. 2. The blower according to claim 1, wherein the drain section is provided on an outer periphery of the motor support section and has a flange shape larger than a boss diameter of the axial fan. 3. A case provided with an axial fan and a mouth ring that forms a bag-shaped space at predetermined intervals around the axial fan. A blower characterized by having a drain hole. 4. A case having a rectangular shape, wherein a plurality of drain holes are provided at least on a diagonal line.
A blower as described in. 5. The blower according to claim 1, wherein a hydrophilic treatment is performed on a surface of the case. 6. A cooling device comprising a blower, wherein the blower according to claim 1 is provided in a cooling atmosphere of a cooler. 7. A cooling device provided with a blower, wherein the blower according to claim 3 is mounted in a cooling atmosphere of a cooler such that a drain hole is located at a lowermost position. 8. A blower according to claim 3, wherein the blower case has a rectangular shape, and a drain hole is disposed at a corner, and the blower is inclined and mounted in a cooling atmosphere of a cooler such that the drain hole is located at a lowermost portion. Cooling equipment equipped with a blower. 9. A cooling device provided with a blower, wherein the blower according to claim 4 is installed in a tilted manner in a cooling atmosphere of a cooler such that a drain hole is located at a lowermost position. 10. A cooling device provided with a blower according to any one of claims 7 to 9, wherein the blower is mounted such that the drain hole faces the cooler. 11. A cooling device provided with a blower according to any one of claims 7 to 9, wherein the blower is rotated immediately before the completion of defrosting of the cooler.