JPH0579370U - Defroster - Google Patents

Abstract

(57) [Summary] [Purpose] A desired air flow rate is set for each internal fan. [Constitution] In the inner box 12, a partition wall 14 is arranged on the left wall surface side, and a fan chamber is formed between the partition wall 14 and the left inner wall surface of the inner box 12. Two exhaust ports 14a1 and 14a2 in which cool air circulation fans (in-compartment fans) 14b1 and 14b2 are arranged are formed in the central portion of the partition wall 14, and the lower edge of the partition wall 14 is separated from the inner wall surface of the inner box 12 and sucked. It forms the mouth 14d. An airflow guide plate 41 having a U-shaped cross-section having a lower opening is arranged around the cool air circulation fan 14b2.
The cool air circulation fan 14b2 sucks the air in the inner box 12 from the opening of the airflow guide plate 41 through the suction port 14d,
The cool air circulation fan 14b1 sucks the air in the inner box 12 from the opening other than the airflow guide plate 41 through the suction port 14d and blows it toward the thawed product.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a thawing store, and more particularly to a thawing store that blows air inside the store to a frozen product to accelerate the thawing.

[0002]

[Prior Art]

 Conventionally, as this type of defroster, the one shown in FIG. 10 is known. In the figure, the thawing cabinet main body is formed as a double box in which an inner box 2 made of a heat conducting member is arranged in an outer box 1 having a heat insulating member as a wall material. An evaporator 3 of a cooler and a blower fan 4 are housed between the outer case 1 and the inner case 2, and the blower fan 4 is cooled by allowing the evaporator 3 to pass the air in the space for cooling. Blow air to the outer circumference of the inner box. In the inner box 2, a partition wall 5 is arranged at a position separated from the left wall in the figure by a predetermined distance, and the partition wall 5 forms a fan chamber with the left wall.

A gap is formed between the lower end of the partition wall 5 and the lower wall of the inner box, and the gap serves as the suction port 5a of the fan chamber. Further, the partition wall 5 is formed with two exhaust ports 5b1 and 5b2 toward the inner surface of the inner box 2. For cooling air circulation, the cool air is blown into the inner box 2 from the fan chamber to the respective exhaust ports 5b1 and 5b2. A fan (in-compartment fan) 6 is provided. It should be noted that the inner box 2 is provided with two shelf plates 7 for placing the thawed products at a position facing the respective cool air circulation fans 6.

In the above structure, when the cooler and the blower fan 4 are operated, the cooled air indirectly cools the inside from the outer peripheral side of the inner box. On the other hand, the cool air circulation fan 6 sucks the air in the inner box 2 from the suction port 5a and blows it toward the defrosted product placed on the shelf 7 from the exhaust ports 5b1 and 5b2. In the figure, the air circulation is indicated by arrows.

[0005]

[Problems to be Solved by the Invention] In the above-mentioned conventional defroster, since the cooling air circulation fan closer to the suction port has a better suction efficiency than the cooling air circulation fan farther from the suction port, there is a difference in the blowing amount. However, there was a problem in that there was a difference in the thawing time of the thawed products placed on each shelf. The present invention has been made in view of the above problems, and an object of the present invention is to provide a defrosting cabinet that can provide a desired air flow rate for each internal fan when a plurality of internal fans are provided.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the invention according to claim 1 has a plurality of in-compartment fans arranged in a fan chamber formed in the chamber, and each in-compartment fan draws in-compartment air from a suction port of the fan chamber. In a defroster that sucks air and blows the air in the same room from the facing exhaust port to generate circulating air in the room, separate the air flow path from the suction port in the fan chamber to the internal fan. It is provided with an air flow guide plate that is provided and adjusts the flow rate of air blown by each internal fan.

According to a second aspect of the present invention, the airflow guide plate is configured so that the air flow passages are divided so that the suction resistances of the internal fans are substantially equal.

[0008]

[Action]

 In the device according to claim 1 configured as described above, when the internal fan provided in the fan chamber is operated, the air in the internal chamber enters the fan chamber through the suction port, and the air flow provided in the fan chamber. It is separated by the guide plate and sucked up to the fans in each cabinet. Therefore, the amount of air blown by each internal fan depends on the shape and arrangement of the airflow guide plates.

Further, in the invention according to claim 2 configured as described above, the airflow guide plate divides the air flow path so that the suction resistances of the internal fans are substantially equal. As a result, the amount of air blown by the fans in each cabinet is also almost equal.

[0010]

[Effect of the device]

 As described above, according to the present invention, the air flow guide plate is provided to partition the air flow path, thereby preventing the air flow rate from changing in accordance with the relative arrangement of the internal fans, and thus, the desired air flow is achieved. It is possible to provide a thawing chamber in which the thawing time of the thawed product can be adjusted as the air volume.

According to the second aspect of the invention, since the airflow guide plates make the suction resistances of the fans in each of the compartments equal, the amount of air blown by the fans in the compartments becomes equal, and the thawing time of the thawed product is also increased. Will be equal.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a defroster according to an embodiment of the present invention. In the figure, the thawing cabinet main body is composed of a heat insulating box 10 and an auxiliary box 20. The heat insulating box 10 is formed as a double box in which an inner box 12 made of a heat conducting member is arranged in an outer box 11 having a heat insulating member as a wall material. In the space between the outer box 11 and the inner box 12, the evaporator 31 of the cooling mechanism 30 covered by the heat insulating cover 13 and the blower fan 32 are fixed to the left inner wall surface of the outer box 11, and the blower fan is provided. Reference numeral 32 denotes air sucked in the space from a suction passage formed on the lower side of the heat insulating cover 13 to pass through the evaporator 31 to cool the air, and air cooled by an exhaust passage formed on the upper side of the heat insulating cover 13. Is blown toward the outer circumference of the inner box 12.

A partition wall 14 is disposed in the inner box 12 at a position separated from the left wall in the figure by a predetermined distance, and the partition wall 14 forms a fan chamber with the left inner wall surface of the inner box 12. FIG. 2 shows a state in which the partition wall 14 is seen through from the inner surface side of the inner box 12, and the cool air circulation fan (housing) is provided inside the circular hole-shaped exhaust ports 14a1 and 14a2 formed by arranging the partition wall 14 vertically. Inner fans) 14b1 and 14b2 are provided. The respective cool air circulation fans 14b1 and 14b2 are stays 14b1a and 14b2a fixed to the back surface of the partition wall 14, motors 14b1b and 14b2b instructed by the stays, and fans fixed to the rotary shafts of the motors. 14b1c, 14b2c, and the surface of the partition wall 14 is provided with a cover 14c that also serves as a louver. Further, the lower edge of the partition wall 14 is separated from the inner wall surface of the inner box 12 to form a gap, and the gap serves as a suction port 14d.

An airflow guide plate 41 is arranged around the lower cool air circulation fan 14b2. The airflow guide plate 41 is fixed in a state in which a strip plate having a width of the space between the inner wall surface of the inner box 12 and the partition wall 14 is bent in a U-shaped cross section and the opening is directed downward. The open end of the airflow guide plate 41 is arranged in accordance with the height of the lower end of the partition wall 14, and the downward opening of the inner plate 41 of the airflow guide has a portion of the suction port 14d located below the cold air circulation flap. The opening 14d1 is dedicated to the fan 14b2, and the remaining portion of the suction port 14d outside the opening of the airflow guide plate 41 is the opening 14d2 dedicated to the upper cooling air circulation fan 14b1.

In the inner box 12, shelf plates 15a and 15b are arranged vertically, and the height of both shelf plates 15a and 15b is such that when the defrosted product is placed, the defrosted product is a cool air circulation fan 14b1. , 14b2 and the height of 14b2. A compressor 33 other than the evaporator 31 and the blower fan 32 in the cooling mechanism 30 is housed in the auxiliary box 20.

Next, the operation of this embodiment having the above configuration will be described. When the cooling mechanism 30 is operated, the condensed refrigerant is supplied to the evaporator 31 and vaporized, and the blower fan 32 sucks air from the suction passage below the heat insulating cover 13 to pass the air to the evaporator 31 and also passes through the evaporator 31. The cooling air is sent to the outer peripheral side of the inner box 12 from the exhaust path above the heat insulating cover 13. When the air flows along the outer periphery of the inner box 12, the cold heat is transferred into the inner box 12 through the wall material made of a good heat conductor, and indirectly cools the air in the inner box 12.

It is assumed that the same frozen mass is placed on the shelves 15a and 15b, and an attempt is made to thaw it in the thaw chamber. The cool air circulation fans 14b1 and 14b2 respectively rotate to suck the air in the storage chamber from the suction port 14d of the fan chamber and try to blow air from the exhaust ports 14a1 and 14a2. Since the airflow guide plate 41 is arranged around the lower cool air circulation fan 14b2, the force sucked by the cold air circulation fan 14b2 is concentrated only on the open end side of the airflow guide plate 41. The open end corresponds to the opening 14d1 of the suction port 14d in the fan chamber, and the cool air circulation fan 14b2 sucks the air in the inner box 12 directly from the opening 14d1 facing the inner box 12. Then, the air is blown from the exhaust port 14a2 toward the thawed product placed on the shelf plate 15b.

On the other hand, in the upper cool air circulation fan 14b1, a part of the fan chamber is closed due to the provision of the airflow guide plate 41, and the suction force of the cold air circulation fan 14b1 is reduced. It concentrates on the opening 14d2 in the suction port 14d. Then, the cool air circulation fan 14b1 sucks the air in the inner box 12 from the suction port 14d of this portion, and blows it from the exhaust port 14a1 toward the defrosted product placed on the shelf board 15a.

As described above, the flow paths through which the respective cool air circulation fans 14b1 and 14b2 suck the air in the inner box 12 are divided by the airflow guide plate 41, and are individually provided in the inner box 12 through the openings 14d1 and 14d2. Facing. On the other hand, the suction resistance of each of the cool air circulation fans 14b1 and 14b2 changes according to the shape of the airflow guide plate 41 that divides the fan chambers, and the amount of air blown by the cool air circulation fans 14b1 and 14b2 determines the suction resistance. It changes according to the shape of the air flow guide plate 41.

Therefore, if the cool air circulation fans 14b1 and 14b2 having the same blowing capacity are used and the shape of the airflow guide plate 41 is determined so that the suction resistances of the cold air circulation fans 14b1 and 14b2 are the same, The air flow rate of each can be the same. In this embodiment, the opening 14d1 dedicated to the cooling air circulation fan 14b1 and the opening 14d2 dedicated to the cooling air circulation fan 14b2 are made to have substantially the same size.

Although the airflow guide plate 41 is formed in a U-shaped cross section in the above embodiment, the suction resistance can be adjusted to obtain a desired air flow rate in other forms as shown below. May be. The airflow guide plate 42 shown in FIG. 3 has a U-shaped cross section with the opening facing downward, and the airflow guide plate 43 shown in FIG. 4 has a U-shaped cross section with the opening facing downward and the upper side has a mountain shape. It has a slanted shape. For both of these, the fan chamber is divided into two chambers, and a separate air flow path is formed for each of the cool air circulation fans 14b1 and 14b2.

On the other hand, the airflow guide plate 44 shown in FIG. 5 has a shape in which an opening is formed in the upper portion of the U-shaped airflow guide plate 42 shown in FIG. 3, and the airflow guide plate 45 shown in FIG. 2 has a shape in which an opening is formed in the upper portion of the airflow guide plate 41 having a U-shaped cross section shown in FIG. 2, and the airflow guide plate 46 shown in FIG. It has a shape in which plate materials are arranged. Further, the airflow guide plate 47 shown in FIG. 8 is composed of two plate members like the airflow guide plate 46 and both plate members are arranged obliquely to each other, and the airflow guide plate 48 shown in FIG. 9 is a V-shaped section. The two plate materials are shaped so that their concave portions face each other. In all of these, the air flow paths of the cool air circulation fans 14b1 and 14b2 in the fan chamber are connected.

In the above-mentioned embodiment, the case where two cool air circulation fans are arranged is explained, but the case where three or more fans are arranged is also applicable. Further, although the one in which the air flow guide plate is fixed has been described, the end portion of the air flow guide plate may be bent so that fine adjustment is possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a defroster according to an embodiment of the present invention.

FIG. 2 is a partially transparent front view of the partition wall shown in FIG.

FIG. 3 is a partially transparent front view of a partition wall according to another embodiment.

FIG. 4 is a partially transparent front view of a partition wall according to another embodiment.

FIG. 5 is a partially transparent front view of a partition wall according to another embodiment.

FIG. 6 is a partially transparent front view of a partition wall according to another embodiment.

FIG. 7 is a partially transparent front view of a partition wall according to another embodiment.

FIG. 8 is a partially transparent front view of a partition wall according to another embodiment.

FIG. 9 is a partially transparent front view of a partition wall according to another embodiment.

FIG. 10 is a cross-sectional view of a conventional defroster.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Insulation box 14 ... Partition 14a1, 14a2 ... Exhaust port 14b1, 14b2 ... Cool air circulation fan 14d ... Suction port 15a, 15b ... Shelf plate 41-48 ... Airflow guide plate

Claims (2)

[Scope of utility model registration request] 1. A plurality of internal fans are arranged in a fan chamber formed in the internal compartment, and each internal fan sucks air in the internal compartment from a suction port of the fan chamber and also from the facing exhaust port to the inside of the internal compartment. In a defroster that blows air to generate circulating air in the refrigerator, it is arranged so as to divide the air flow path from the suction port in the fan chamber to the fan in the refrigerator, and the flow rate of air blown by the fans in the refrigerator A thawing chamber provided with an air flow guide plate for adjusting 2. The defroster according to claim 1, wherein:
A thawing cabinet, wherein the airflow guide plate is configured to divide the air flow path so that the suction resistances of the internal fans are substantially equal.