JPH0260939B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an open shower case, and particularly to a method for manufacturing an air rectification mechanism provided at a jet port that forms a laminar flow of cooling air in an open portion.

(Prior art) Conventionally implemented open show case 10
0 has a large opening 1 on the front as shown in Figure 7.
A partition 104 is provided inside the heat insulating wall 102 having a cross section of approximately 01, with a first ventilation path 103 interposed therebetween, and a second ventilation path 105 is provided inside the partition 104.
An inner box 106 with multiple shelves is provided through the inner box 106,
A first blower 107 in the first ventilation path 103,
A second blower 108 and a first evaporator 109 are provided in the second ventilation path 105, and the open part 1
A first spout 111b and a second spout 111a provided with a rectifying mechanism 110 in the first ventilation passage 103 and the second ventilation passage 105 at the upper edge in 01
Similarly, a third blower 112 and a second evaporator 11 are provided on the upper surface of the heat insulating wall 102.
A third air outlet 1 is provided in the third ventilation passage 114 provided with a
11c, and the openings of the first ventilation passage 103 and the second ventilation passage 105 on the lower side of the open part 101 are connected to the first intake port 115 and the second intake port 1, respectively.
16.

The open show case 100 has a cooling air flow that circulates between the second ventilation passage 105 and the opening 101, an air flow that circulates between the first ventilation passage 103 and the opening 101, and a third jet port 111c. The inside of the inner box 106 is cooled while blocking the intrusion heat from the opening part 101 by dehumidifying or cooling air flow that blows out and shields the opening part 101.
The layered air flow in the opening 101 is first, second,
A laminar flow that is rectified in a certain direction by the rectification mechanism 110 provided at the third jet ports 111b, 111a, and 111c so that the air flow does not scatter and the three layers of air flow do not mix excessively with each other. After the open portion 101 is covered, the air flow is divided into an air flow that is sucked into the first and second suction ports 115 and 116 and circulated, and an air flow in the outermost layer that is discharged outside the refrigerator.

Therefore, the rectifying mechanism 110 that forms the air flow is
It is considered to be one of the important mechanisms that determines the cooling effect of open-sided cases.

As a method of manufacturing this rectifying mechanism, for example, the method shown in Japanese Patent Publication No. 57-38253 is known.

That is, as is clear from FIG. 8, the openings 1 are formed of synthetic resin such as polyethylene or polypropylene, and are adjacent to each other through thin-walled portions.
After making a cut from the opposite direction so as to intersect with the opening hole 119 as shown by arrow A in the material of the rectifying unit 118 having a plurality of 19, the rectifying mechanism 117 is formed by folding and stacking the pieces using the cut as a guide. This is the way to do it.

In addition, as shown in FIG. 9 and Japanese Patent Application Laid-Open No. 51-88576, the adhesive surface of the rectifying unit 121 made of a thermoplastic material is coated with adhesive at regular intervals along the length direction l. 123 in the width direction S, and then stretched in the stretching direction (width direction S in FIG. 9) using a tensioning device, and further heated and cooled to shape and harden the laminated rectifying units. There is also a method of forming the rectifying mechanism 120 having hexagonal openings 122 on both end faces.

(Problems with the prior art) First, regarding the prior art,
The rectifying mechanism produced by the manufacturing method shown in the publication is supported only by the restoring force of the rectifying unit when attached to the upper edge spout of the opening of the open shower case. When removed from the exit, it fell apart and was very difficult to handle.

In addition, in the case of an open shower case, it is conventionally known that the shielding effect is better if the velocity of the air flow ejected from the rectifier mechanism is set close to 0 inside, outside the refrigerator, and inside the refrigerator, and increases as it approaches the center. better known. In order to form a rectifying mechanism with such an effect, the manufacturing method shown in Japanese Patent Publication No. 57-38253 requires that only the same materials be used for the rectifying unit; In this type of flow rectification mechanism, it is necessary to make diagonal notches, fold back at the notches, and stack the layers, so that at least one of the two end faces provided with the apertures has an oblique shape. The end face provided with this was misaligned, and when attached to the spout, the appearance was unfavorable.

Furthermore, when making a cut in the flow straightening unit, the cut must be made to a degree that allows the flow straightening unit to be bent and supported by restoring force when the flow straightening mechanism is attached to the spout, and the bending work must be Since the process itself was troublesome, it was also difficult to process.

Next, in the rectifying mechanism manufactured by the manufacturing method disclosed in JP-A-51-88576, the individual rectifying units are bonded only on the surface coated with adhesive, and the film thickness is thin (50 to 80 μm). ), easily damaged by impact,
Therefore, the rectification effect was also adversely affected.

In addition, the manufacturing process is complicated and expensive, and only the same rectifying unit can be used.

In addition, with the above two manufacturing methods, it is difficult to attach a handle when removing the rectifying mechanism from the jet nozzle.
Therefore, the removal work was very troublesome.

(Object of the Invention) An object of the present invention is to solve the problems of the prior art by providing a simple and inexpensive manufacturing process, allowing the material of the rectifying unit to be changed, and further strengthening the structure against impact. To provide a method for manufacturing an air rectifying mechanism such as an open shower case, which is hard to be damaged, does not disturb the rectifying effect, has a good appearance when attached to a jet nozzle, and is easy to remove.

(Means of the Invention) A large number of rectifying unit materials made of extrusion moldable synthetic resin and having a plurality of opening holes adjacent to each other through thin-walled portions on both end faces are laminated, and the laminated rectifying unit bodies are A rectifying mechanism is formed in which the laminated rectifying units are fixed together by a fixing means, and the laminated surfaces are heated and welded while being cut in a direction intersecting the opening hole by a heated cutting and welding means stage. It is something.

(Example) Examples of the present invention will be described below with reference to the drawings of FIGS. 1 to 6.

Figure 3 shows the main parts of the air rectification mechanism of the open show case. Reference numeral 1 denotes a rectifying mechanism made of synthetic resin such as polyethylene or polypropylene, and the rectifying unit 2 has a plurality of opening holes 3 adjacent to each other through thin-walled portions on both end faces.
It has a structure in which a large number of layers are stacked along arrow S.

FIG. 1 shows a first embodiment of a method and apparatus for manufacturing a rectifying mechanism 1 having such a structure.

The manufacturing apparatus includes a mounting table 4 on which the stacked rectifying units are placed, a mounting frame 11 as a fixing means having a roughly shaped cross section provided at the front end of the upper surface of the mounting table 4, and the mounting table 4.
A fixed frame 9 provided in front of the front end of the frame 9, and a movable frame 8 with a roughly shaped cross section that can move up and down between the fixed frames 9.
Then, wires such as nichrome wires are stretched from the left and right sides of the moving frame 8 with insulators 6 in between so as to be at least as wide as the left and right widths of the stacked rectifier units, and the left and right ends are provided with springs 7 to take up the slack. It consists of a heating filament 5 as a cutting and welding means, and a voltage regulator 10 for adjusting the amount of heat generated by the heating filament 5.

In order to form the rectifying mechanism 1 using the manufacturing apparatus configured as described above, a large number of rectifying units 2 are stacked so that the apertures 3 are in the same direction, and the stacked rectifying units are connected to the apertures 3. The stacked rectifying units are placed on the mounting table 4 so that both end surfaces thereof are the front and rear ends, and the front ends of the stacked rectifying units are passed between the mounting frames 11 so that they protrude from the front end of the mounting table 4. . At this time, the stacked rectifier units are firmly fixed together as one by the mounting table 4 and the mounting frame 11.

Thereafter, the movable frame 8 descends in the direction of arrow A, and while cutting the stacked rectifying units to a predetermined width using the heating filaments 5, heating and melting the laminated surface of each rectifying unit 2 to adjoin the rectifying units 2. The rectifying mechanism 1 is formed by welding the rectifying units 2 together. If necessary, after raising the moving frame 8, the stacked rectifying units are pushed out in front of the mounting table 4, and the heating filament 5
It is also possible to continuously form a large number of rectifying mechanisms 1 by cutting and welding.

Note that the cutting conditions vary depending on the thickness, material, and cutting direction of the stacked rectifier units, so the thickness of the heating wire 5 may be changed or the voltage may be adjusted using the voltage regulator 10 according to the cutting conditions. The amount of heat generated by the heating filament 5 may be changed. Furthermore, the height and width of the mounting frame 11 may be arbitrarily changed depending on the width and thickness of the stacked rectifying units.

FIG. 2 shows another embodiment of the method and apparatus for manufacturing the rectifying mechanism 1.

As in FIG. 1, the manufacturing apparatus includes a mounting table 4 on which the stacked rectifying units are placed, a mounting frame 11 as a fixing means with a roughly shaped cross section provided at the front end of the upper surface, and at least a mounting table. The fulcrum 1 is located in front of the extension of the front end of 4 and below the mounting table 4.
A movable frame 8 having a general cross-section that can be vertically rotated about 2; Furthermore, a heating wire 5 as a cutting and welding means is made of a nichrome wire or the like and has at least one end so as to take up the slack with a spring 7;
It further includes a voltage regulator that adjusts the amount of heat generated by the heating filament 5.

In order to form the rectifying mechanism 1 using the manufacturing apparatus configured as described above, the rectifying unit 2 is assembled as shown in FIG.
A large number of stacked rectifying units are stacked so that the opening holes 3 are in the same direction, and the stacked rectifying units are placed on the mounting table 4 so that both end surfaces with the opening holes 3 are the front and rear ends, and the stacked rectifying units are further stacked. The front end of the body is passed between the mounting frames 11 so as to protrude from the front end of the mounting table 4, and the moving frame 8 is rotated in the direction of arrow B to cut the body with the heating filament 5 and separate the individual rectifying units. Adjacent rectifying unit bodies 2 are welded together by heating and melting the laminated surfaces of the bodies 2.

Further, in the same manner as in the embodiment shown in FIG. 1, in this embodiment as well, after rotating the moving frame 8 upward, the stacked rectifying units are pushed out in front of the mounting table 4, and the heating wire is By cutting and welding the strips 5, a large number of rectifying mechanisms 1 can be continuously formed.
1 height and width can be changed arbitrarily,
In addition, the amount of heat generated by the heating wire 5 may be changed by adjusting the voltage using the voltage regulator 10. Particularly in the case of this embodiment, the angle of the moving frame 8 may be sensed with a potentiometer or the like, and the voltage regulator 10 may be controlled based on the sensed signal.

In addition, in both the embodiments shown in FIGS. 1 and 2, it is possible to change the heating filament 5 not only by voltage adjustment but also by power adjustment. In this case, by using a thyristor stopper or the like, the temperature of the heater is measured with a thermistor, and feedback control is performed using the output thereof.

Incidentally, the material of the rectifying unit 2 used in the embodiments of FIGS. As shown in Figure 4, the thin-walled portions are tilted diagonally in the same direction to form the opening hole 3 in a rhombus shape; As shown in Figure 4 d, the thin-walled portions are alternately tilted diagonally in opposite directions to make the opening hole 3 trapezoidal, and as shown in Figure 4e, the thin-walled portion is S-shaped and the opening hole 3 is shaped as a wave. If the rectifying mechanism 1 is formed by the manufacturing method of the present invention using such a material, it is possible to further increase the strength against impact.

In FIG. 5, spout ports 111a, 111b, and
The flow straightening mechanism 1 having a smooth surface exposed from 111c is shown provided with a handle 13 that facilitates removal from the jet ports 111a, 111b, and 111c and is aesthetically pleasing. In order to form such a rectifying mechanism 1, according to the manufacturing method of the present invention, the handle 13 is stacked on the outermost layer of the stacked rectifying units, fixed with the mounting frame 11, and then cut with the heating filament 5. It can be heat welded.

Furthermore, as shown in FIG.
The shielding effect is increased by getting close to 0 on the inside and outside of the refrigerator, and becoming faster as you get closer to the center.
In order to form the rectifying mechanism 1 which is also preferable in terms of appearance, rectifying unit 2 materials of different widths are used according to the manufacturing method of the present invention, and the outermost layer is the rectifying unit 2 with the smallest width, and as it approaches the center, They may be laminated to form a rectifying unit 2 with a large width, then fixed with a mounting frame 11, and then heated and welded while being cut with a heating filament 5.

(Effects of the Invention) As described above, according to the present invention, the rectifying unit is formed of extrusion moldable synthetic resin and has a plurality of opening holes adjacent to each other through thin-walled portions on both end faces. A large number of stacked rectifier units are stacked together, and the stacked rectifier units are fixed together by a fixing means, and the stacked rectifier units are cut in a direction intersecting the opening hole by heated cutting and welding means. Since the rectifying mechanism was formed by heating and welding the laminated surfaces, the manufacturing equipment and manufacturing process are inexpensive, the material of the rectifying unit can be changed, and it is strengthened against impact, is less likely to be damaged, and is more It is possible to provide a method for manufacturing an air rectification mechanism such as an open-shoulder case that has a good appearance when attached to an outlet and is easy to remove.

In addition, the manufacturing method of the present invention allows a large number of rectifying mechanisms to be formed continuously, resulting in very high work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a typical embodiment of the present invention. FIG. 2 is a perspective view showing another embodiment of the invention.
FIG. 3 is a perspective view showing the main parts of the rectifying mechanism formed according to the present invention. FIG. 4 is a plan view showing a thin portion and openings of a rectifying unit material that can be used in accordance with the present invention. FIG. 5 is a perspective view showing an example of a rectifying mechanism with a handle formed according to the present invention. FIG. 6 is a plan view showing another example of the rectifying mechanism formed according to the present invention other than those shown in FIGS. 1 and 5, and the velocity distribution of the cooling air flow before and after passing through the rectifying mechanism when the same is used. FIG. 7 is a sectional view showing an example of a conventionally known open show case. Figure 8 shows 1 of the prior art.
An example is shown, and a, b, and c are a perspective view and a plan view showing a rectifying unit, a method for manufacturing a rectifying mechanism, and a rectifying mechanism, respectively. FIG. 9 shows another example of the prior art,
FIGS. 3A and 3B are perspective views showing a stacked rectifying unit and a rectifying mechanism, respectively. 1... Rectification mechanism, 2... Rectification unit, 3... Opening hole,
4... Mounting table, 5... Heating wire, 8... Moving frame, 9... Fixed frame, 10... Voltage regulator, 11... Mounting frame, 12...
Fulcrum, 100...Open case, 101...
Opening parts, 111a, 111b, 111c... spouts.

Claims (1)

[Claims] 1. Made of extrudable synthetic resin,
A large number of rectifying unit materials each having a plurality of opening holes adjacent to each other through thin-walled portions on both end faces are laminated, the laminated rectifying unit bodies are fixed together by a fixing means, and the laminated rectifying unit is body,
1. A method of manufacturing an air rectifying mechanism for an open show case or the like, characterized in that the rectifying mechanism is formed by heating and welding laminated surfaces while cutting in a direction intersecting the opening hole using heated cutting and welding means. 2. The cutting and welding means is a heating wire consisting of a heating wire whose applied voltage can be arbitrarily controlled according to the cutting conditions, and is adapted to apply an expanding force in the length direction. A method of manufacturing an air rectifying mechanism such as an open show case according to claim 1, characterized in that: