JP4082925B2 - Refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator such as a quick freezer.
[0002]
[Prior art]
Conventionally, what is shown in FIG. 8 is known as an example of a quick freezer. In this case, a storage chamber 2 is provided in a freezer main body 1 made of a heat insulating box, and a cooler chamber 4 is formed on the right side of the figure with a partition cover 3 interposed therebetween. When the cooler 5 circulated and connected by the apparatus and the refrigerant pipe has a structure in which the internal fan 6 is accommodated at the center height position on both the upper and lower sides, and the refrigerator and the internal fan 6 are driven, A circulating flow is generated in which air is sucked toward the cooler 5 and cold air generated by heat exchange while passing through the cooler 5 is blown out into the storage chamber 2 by the upper and lower internal fans 6. The food stored in the storage chamber 2 is rapidly frozen.
[0003]
[Problems to be solved by the invention]
Here, a cylindrical guide 8 is provided on the back surface of the partition cover 3 for the cool air blowing portion from the internal fan 6, and at that time, the depth dimension S of the guide 8 is set to be large. It is known that the closer to the blade 6A, the higher the speed of the blowout.
On the other hand, considering the convenience of maintenance in the cooler chamber 4 and the like, a structure that can swing open and close the partition cover 3 toward the inner wall 1A, for example, has been developed. Therefore, the depth dimension S is limited. In other words, there is a limit to increasing the blowing speed, and the cooling speed is slow or the speed is slow, which may cause a short cycle that is immediately sucked into the cooler 5 side.
[0004]
In addition, since the internal fan 6 has a structure in which the blades 6A are arranged around the rotation shaft 6B, the cold air is inevitably blown out toward the outside as shown by the arrow in FIG. As indicated by the symbol x in the same figure, it is rather difficult for the cool air to flow around the area immediately in front of the internal fan 6, and there is a possibility that the cooling rate may be uneven.
At the same time, the cool air turns well to the front opening 1B side of the main body 1 (the lower side of the figure (A)), and the rear surface of the door mounted on the main body 1 is easily cooled. There was also a problem that the packing attached between the front opening was likely to be frozen.
The present invention has been completed based on the above circumstances, and an object thereof is to increase the blowing speed of cold air. Another object is to allow the cold air to be blown out uniformly throughout the storage chamber.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, a cooler chamber in which a cooler and an internal fan are accommodated is provided on one wall surface side in a cooler main body provided with a door on the front surface and the inside of which is a storage chamber for food and the like. The cool air generated by the cooler is blown into the storage chamber by the internal fan and cooled , and the partition cover can swing and open with one side edge as a fulcrum. In the supported cooler, the internal fan is housed and mounted in a fan case, and the fan case is provided with a cylindrical first guide that opens the internal fan toward the partition cover. In addition, the partition cover is provided with a cylindrical second guide that is fitted to the outer periphery of the first guide , and the second guide has a predetermined dimension on the protruding end side of the first guide. With a length to wrap In the order to avoid interference with the guides between during swing open the partition cover, characterized in was a configuration that is formed to have a predetermined clearance in the radial direction between the first guide .
[0006]
According to a second aspect of the present invention, the cool air blown from the internal fan is directed straight in at least one of the first guide and the second guide. It is characterized in that a rectifying member for rectifying is provided.
The invention of claim 3 is characterized in that, in the invention of claim 2, the rectifying member is configured by assembling vertical and horizontal plate members in a lattice shape.
According to a fourth aspect of the present invention, in the third aspect, the cooler chamber is provided on either the left or right wall surface side, and the lattice-shaped rectifying member is formed of a plate material that is vertically oriented rather than horizontally oriented. It is characterized in that it is formed with a larger number of sheets.
[0007]
[Action and effect of the invention]
<Invention of Claim 1>
Since the second cover on the partition cover side is fitted to the outer periphery of the first cover on the fan case side, the guide has no leakage over the long distance from the blade position to the partition cover at the outer peripheral position near the blades of the internal fan. Can be arranged. For this reason, the blowing speed of cold air is increased, and the cooling speed can be increased. Further, since the blowing speed is increased, it is possible to prevent a short cycle that immediately goes around to the cooler side, and a predetermined cooling capacity is secured.
Although Ru structure der the partition cover is opened and closed swung, by a predetermined clearance is provided in the radial direction between the two covers, it is possible to open and close the partition cover without interfering with the guides.
[0008]
<Invention of Claim 2>
The cold air from the internal fan is blown out toward the storage room while being spread by the current plate. Thereby, the dispersion | variation in the cooling rate by the position in a storage chamber is suppressed as much as possible, and uniform cooling can be expected.
<Invention of Claim 3>
With a simple structure in which vertical and horizontal plates are assembled in a lattice shape, the rectification of cold air can be achieved.
<Invention of Claim 4>
By increasing the number of plate members in the vertical direction, it is possible to suppress particularly the cool air from moving toward the front opening side of the refrigerator main body, and to prevent the rear surface of the door attached thereto from being overcooled. As a result, it is possible to effectively prevent condensation on the surface of the door or freezing of the packing attached between the door and the front opening.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the case where it applies to a quick freezer is illustrated.
1 and 2, reference numeral 10 denotes a freezer body made of a vertically insulated heat insulating box with a front opening, which is supported by legs 11 provided at the four corners of the bottom, and the front opening has a central height. The upper and lower doors 13 are partitioned by the partition frame 12 at positions, and the heat insulating doors 14 are supported by the doors 13 so as to be swingable in the horizontal direction.
[0010]
As shown in FIG. 1, in the main body 10, the slightly over 2/3 region on the left side as viewed from the front is the storage chamber 15, and the remaining region on the right side is the cooler chamber 16.
Shelf pillars 18 are erected at the four corners of the storage chamber 15, and in a posture in which a pair of rails 19 having an L-shaped cross section face each other, the same height is provided between the front and back shelf pillars 18 on both the left and right sides. It has been handed over to be supported. A pair of these rails 19 are arranged in a plurality of stages, and a tray T having a square shallow dish shape is put in and out of both the rails 19 forming a pair while placing both side edges thereof.
On the other hand, in the cooler chamber 16, a cooler 21 is disposed at a substantially central height position, and internal fans 30 are attached to both upper and lower sides thereof.
[0011]
The cooler 21 is circulated and connected by a refrigeration apparatus 23 in a machine room 22 provided on the upper surface of the main body 10 by a refrigerant pipe, and a known refrigeration cycle is configured. The upper and lower internal fans 30 are housed and arranged in a fan case 35 which will be described in detail later.
Front covers 24 are stretched on the front surface of the cooler chamber 16 on both the upper and lower sides of the partition frame 12. On the other hand, on the side surface of the cooler chamber 16 that is the boundary with the storage chamber 15, a cooler cover 25 and two upper and lower internal fan covers 26 are stretched between the front and rear shelf columns 18. Yes.
Each cover 25, 26 is attached to the back shelf column 18 via a hinge 27, and is supported so as to be swingable toward the back surface of the storage chamber 15. The part is fixed to the shelf column 18 on the near side with a screw 28.
The cooler cover 25 is formed with a large number of suction ports 29 aligned on almost the entire surface.
[0012]
Now, the arrangement portion of the internal fan 30 will be described in detail.
As shown in FIG. 3, the fan case 35 is formed in a box shape in which the back surface and both upper and lower surfaces are opened, and a plurality of through holes 36 are opened on both side plates, and at each rear edge, The mounting plate 37 is formed by bending at a right angle. A motor casing 31 is mounted in the fan case 35 via a bracket (not shown), and both mounting plates 37 of the fan case 35 are fixed to the right side wall 10 </ b> A of the main body 10.
A first guide 40 having a cylindrical shape with a slightly larger diameter than the blades 32 of the internal fan 30 protrudes from the surface plate 38 of the fan case 35. A part of the blade 32 may face the proximal end side of the first guide 40. As shown in FIG. 4, the length of the first guide 40 is a little more than half the distance between the surface plate 38 of the fan case 35 and the closed internal fan cover 26.
[0013]
On the other hand, a cylindrical second guide 42 fitted on the outer peripheral side of the first guide 40 is provided on the rear surface of the internal fan cover 26. The second guide 42 has a length that wraps by a predetermined dimension L on the protruding end side of the first guide 40, and the guides 40, 42 are connected to each other when the internal fan cover 26 is swingably opened and closed. In order not to interfere, the first guide 40 has a diameter that secures a predetermined clearance.
In addition, the fitting part of both guides 40 and 42 may be couple | bonded with a screw etc. in the lower surface side etc., for example.
[0014]
Then, the effect | action of this embodiment is demonstrated.
During operation, the tray T storing the ingredients is placed on the left and right rails 19 and stored in the storage chamber 15. In this state, when the refrigeration apparatus 23 and both the internal fans 30 are driven, the internal air in the storage chamber 15 passes through the suction port 29 of the cooler cover 25 as shown by the arrow in FIG. While being sucked toward the cooler 21, cold air is generated by heat exchange while passing through the cooler 21. This cool air is introduced into the upper and lower fan cases 35 through the openings on the upper and lower surfaces and the through holes 36 on the side plates, and then a circulating flow is generated such that the cool air is blown out into the storage chamber 15 by the internal fans 30. The inside of the storage chamber 15 is cooled and the food is frozen.
[0015]
Here, in front of the blades 32 of the internal fan 30, the first guide 40 and the second guide 42 are arranged in a state of being partially wrapped and connected, in other words, around the blades 32 that are relatively close to each other. In this case, the guides 40 and 42 are arranged without leakage over a long distance from immediately before the blades 32 to the internal fan cover 26, so that the blowout speed of the cold air from the internal fan 30 is increased, thereby cooling the food. Speed can be increased. Further, since the blowing speed is increased, it is possible to prevent a short cycle that immediately goes around the cooler 21 after being blown out from the guide 42, and a predetermined cooling capacity is secured.
[0016]
Further, when a failure or the like of the cooler 21 or the internal fan 30 is found and repair or replacement of parts is performed, the covers 25 and 26 are opened individually after the tray T is pulled out. For example, if there is a failure in either the upper or lower in-compartment fan 30, first, the rail 19 arranged at the position of the corresponding in-compartment fan cover 26 and the rail 19 on the opposite side are removed as necessary. At the same time, the swinging end of the internal fan cover 26 is removed from the shelf column 18 by loosening the screws 28, and the internal fan cover 26 is placed at the back of the storage chamber 15 around the hinge 27 as shown by the chain line in FIG. Swing toward the surface. Thereby, since the installation position of the internal fan 30 is opened to the storage chamber 15 side, repair, parts replacement, etc. can be performed from the storage chamber 15 side. When the parts replacement is completed, the internal fan cover 26 is swung back to the original position.
As described above, since a predetermined clearance is provided in the radial direction between the first guide 40 and the second guide 42, the first guide of the second guide 42 that accompanies opening and closing of the internal fan cover 26. The insertion and removal with respect to 40 is also performed smoothly.
[0017]
Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, the rectifying member 50 is provided inside the front end side of the first guide 40 protruding from the surface plate 38 of the fan case 35A. The rectifying member 50 is formed in a lattice shape by combining one horizontal plate 51 and three vertical plates 52.
Other structures are the same as those in the first embodiment, and portions having the same function are denoted by the same reference numerals, and redundant description is omitted.
[0018]
According to this embodiment, when the cold air from the internal fan 30 is blown out into the storage chamber 15 through both the guides 40 and 42, the flow straightening member 50 is provided inside, and the horizontal plate 51, the vertical plate By restricting the flow at 52, as shown by the arrow in FIG. 7, the outward spread is suppressed and the air is blown out almost straight. As a result, cold air is uniformly distributed in the storage chamber 15, and variation in the cooling rate depending on the position in the storage chamber 15 is suppressed, so that uniform cooling can be expected.
Here, the number of the horizontal plates 51 and the vertical plates 52 constituting the rectifying member 50 is not limited to the above example. However, a sufficient rectifying function cannot be obtained if one horizontal plate 51 and one vertical plate 52 are provided. The larger the number, the more effective for rectification, but conversely the resistance increases and the wind speed of the cool air decreases. Therefore, the number should be determined in consideration of the rectification state and the wind speed.
[0019]
In the present embodiment, since the number of the horizontal plates 51 is one, and the three vertical plates 52 are arranged, the blown-out cool air is suppressed from spreading especially in the depth direction of the storage chamber 15. This means that the cool air is restrained from moving toward the entrance / exit 13 of the main body 10, and it is possible to prevent the back surface of the heat insulating door 14 attached thereto from being overcooled. As a result, it is possible to effectively prevent condensation on the surface of the heat insulating door 14 and freezing of the packing attached between the heat insulating door 14 and the mouth edge of the doorway 13.
Note that the single horizontal plate 51 means that the cool air is likely to spread relatively in the vertical direction, but this is not a problem in consideration of the flow of the entire cool air.
[0020]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) About the baffle member, you may be provided in the base end part in the 2nd guide by the side fan cover side.
(2) The rectifying member is not limited to the lattice shape exemplified in the above embodiment, but may be any other shape as long as it can function to rectify the cold air blown out in a substantially straight direction.
(3) The present invention can also be applied to those in which the cooler chamber is provided on the back surface or ceiling surface in the main body.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view as seen from the front according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view as seen from the side. FIG. FIG. 5 is a perspective view of a fan case according to the second embodiment. FIG. 6 is a side view showing a portion in which the internal fan is disposed. FIG. 8) (A) Schematic plan sectional view of conventional example (B) Schematic front sectional view [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Freezer main body 13 ... Entrance / exit 14 ... Thermal insulation door 15 ... Storage room 16 ... Cooler room 21 ... Cooler 25 ... Cooler cover 26 ... Inside fan cover 27 ... Hinge 30 ... Inside fan 32 ... Blade 35, 35A ... Fan case 38 ... Surface plate 40 ... First guide 42 ... Second guide 50 ... Rectifying member 51 ... Horizontal plate 52 ... Vertical plate

Claims (4)

A cooler room containing a cooler and an internal fan is installed on one wall side of the cooler body with a door on the front and the inside as a storage room for food, etc. In the refrigerator where the cool air generated by the container is blown into the storage chamber by the internal fan and cooled , and the partition cover is supported so as to be able to swing open and close with its one side edge as a fulcrum ,
The internal fan is accommodated in and attached to a fan case. The fan case is provided with a cylindrical first guide that opens the internal fan toward the partition cover, and the partition cover includes A cylindrical second guide fitted to the outer periphery of the first guide is provided ;
In addition, the second guide has a length that wraps by a predetermined dimension on the protruding end side of the first guide, and in order to avoid interference between the two guides when the partition cover swings and opens. A refrigerator having a predetermined clearance in the radial direction therebetween .   The inside of at least any one of the said 1st guide and the said 2nd guide is provided with the rectification | straightening member which rectifies | straightens the cold air blown from the said internal fan toward a straight direction. Item 1. The refrigerator according to item 1.   The cooler according to claim 2, wherein the rectifying member is configured by assembling vertical and horizontal plate materials in a lattice shape.   The cooler chamber is provided on either the left or right wall surface side, and the lattice-shaped rectifying member is formed with a larger number of plate members in the vertical direction than in the horizontal direction. 3. The refrigerator according to 3.

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