JPS5818149Y2 - Air blowing part of frozen/refrigerated open showcase - Google Patents

Description

[Detailed description of the invention] The present invention relates to an open showcase for freezing and refrigerating, which forms an air curtain in the large open part of the front to partition the inside and outside of the refrigerator. Regarding the structure of the air blowing part of the case.

Generally, in order to obtain a good air curtain, an air outlet is equipped with a rectifier consisting of a number of narrow air passages formed adjacent to each other. When installed, condensation tends to form on the rectifier due to the temperature difference between the air blown out from the air outlet, which can cause dust to adhere to the rectifier, resulting in unsanitary conditions and deterioration of the appearance. It ends up.

In addition, due to the viscous resistance on the surface of the partition plate that partitions the air outlet, the air blowing speed near the part of the flow straightening device corresponding to the partition plate is extremely low compared to other parts, resulting in turbulent flow. This results in the inability to obtain a good air curtain with a temperature difference.

Therefore, an object of the present invention is to prevent condensation in the rectifier as described above.

Another purpose of the present invention is to suppress the decrease in the air blowing speed near the part corresponding to the partition plate of the rectifier, thereby solving the problem caused by the turbulent flow of discharged air. It's in the portrait.

Still another object of the present invention is to position the tip of the partition plate by a rectifying device, thereby simplifying the installation structure of the partition plate.

According to the present invention, in a freezing/refrigerating open showcase in which a rectifying device formed by forming a large number of narrow air passages adjacent to each other is installed so as to span the outlets of a plurality of air passages that blow out air of different temperatures, The air passage near the outlet is partitioned by a partition plate with a heater, while a groove wider than the thickness of the tip of the partition plate is provided in the part of the rectifier that faces the partition plate. An air refrigerator/freezer open showcase characterized in that the tip of the partition plate is fitted into the groove with a gap, so that the air heated by the heater also passes through the air passage corresponding to the groove. A blowing part is obtained.

Examples will be described below with reference to the drawings.

In the refrigeration or refrigerated open showcase shown in Fig. 1, a cooler 2 and a blower means 3 are arranged in the first air passage 1 to cool the air sucked in from the inner suction port 4 in the lower part and to blow the air inside the upper part. The air is blown out from the outlet 5, and a blowing means 7 is disposed in the second air passage 6, so that the air sucked in from the outer air intake port 8 at the lower part is blown out as it is, or slightly smaller than the air blown out from the inner air outlet 5. The air is cooled to a high temperature and the air is blown out from the outer outlet 9 at the top, and a common rectifier 10 is installed across the inner outlet 5 and the outer outlet 9, thereby allowing the air to flow into the large opening 11 at the front. Good two-layer air curtains C and C2 are formed, thereby continuously cooling the inner bottom surface of the refrigerator interior 12 and the articles displayed on the shelves 13.

Also, most of the air that formed the inner air curtain C1 enters the inner air intake port 4, and most of the air that formed the outer air curtain C2 enters the outer air intake port 8, so that the air is circulated as much as possible. ing.

Here, the cooler 2 is an evaporator part of a device that repeatedly condenses and evaporates a refrigerant, and the rectifier 10 is made of plastic and has a large number of adjacent elongated air passages each having a hexagonal cross section.

In the air blowing part of such a showcase, as shown in the detailed structure in FIG. A heater 15 made of a wire coated with vinyl is provided on the surface on the first air path 1 side, and a heat insulating material 16 is provided on the surface on the second air path 6 side, and is made of a material with high thermal conductivity such as metal, plastic, etc. A relatively thin partition plate 17 is fixed, and a heat insulating material 1 is attached to the rectifier 10 at a portion facing the tip of the partition plate 17.
A groove 18 wider than the thickness of the tip of the partition plate 17 including 6 parts is provided, and a front support 20 fixed to the upper heat insulating external wall 19 and a rear support 22 fixed to the interior ceiling board 21 are provided.
The rectifying device 10 is installed in a slightly curved state as shown in the figure, and at that time, the heater 1 of the partition plate 17 of the groove 18 is installed.
5 are fitted with a gap, so that air whose temperature has been slightly raised by the heater 15 also passes through the air passage (for example, 101) in the portion where the groove 18 is provided.

At this time, care must be taken to ensure that the groove 18 is not completely blocked by the heater 15.

During operation, the heater 15 is energized to heat a portion of the air at the outlet 5 of the first air path 1.

This heated air mainly enters the groove 18, where it is further heated by the heater 15 and passes through the air passage 101 of the rectifier 10.

In this way, the air in the first air passage 1 has low absolute humidity and is further heated and blown out from the air passage 101 as air with extremely low relative humidity. Therefore, even if the air blown out from the second air passage 6 Even if the relative humidity is high, dew does not form at the boundary on the outlet side of the rectifier 10.

Also, the air passage 1 in the portion corresponding to the groove 18 of the rectifier 10
01 is shorter than the air passages in other parts by the depth of the groove 18, so the resistance in the air passage 101 in that part is smaller than the resistance in other parts.

Therefore, the decrease in the blowing speed in that portion can be suppressed to a relatively small amount, so that the speed distribution of the blowing air from the rectifying device 10 is made uniform as a whole.

Note that the heat insulating material 16 may not be provided; in that case, the heater 15 may be attached to the surface of the partition plate 17 on the second air path 6 side, or may be attached to both sides, or It may be something.

Further, the rectifying device 10 may be made of metal, and it is not necessary that it be curved.

As described above, in the present invention, since air with extremely low relative humidity is passed between the parts of the rectifying device 10 facing the air channels having different temperatures, the rectifying device 10
This prevents unsanitary situations and deterioration of appearance due to dew condensation and dust adhesion.

Furthermore, since the velocity distribution of the air blown from the rectifying device 10 is made uniform throughout, turbulence of the blown air is prevented, and a good air curtain that maintains the temperature difference can be obtained.

Further, since the partition plate is positioned by entering the groove 18 of the rectifier 10 with its tip, the structure of the partition plate can be simplified.

In addition, although the above embodiment describes the case where the air curtain is formed in two layers, the present invention can be implemented in the same manner and the same effect can be achieved even in the case where the air curtain is formed in three or more layers. It goes without saying that the present invention can be applied to achieve the same effect wherever a certain amount of air is blown out, and that various other design changes are also possible.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a cross-sectional side view showing the overall structure of the frozen/refrigerated open showcase, and Fig. 2 is an enlarged view showing part A in Fig. 1 in detail. be. 1...First air path, 2...Cooler, 5.
...Inner air outlet, 6...Second air passage, 9.
...Outer air outlet, 1o...Curved rectifier, 14...
...Insulating partition wall, 15... Heater, 16.
...Insulation material, 17...Partition plate, 18...
····groove.

Claims (1)

[Scope of utility model registration request] In a freezer/refrigeration open showcase in which a rectifier consisting of a number of narrow air passages formed adjacent to each other is installed across the outlets of multiple air passages that blow out air at different temperatures, the air passages near the air outlets are The partitioning is performed by a partition plate with a heater, and on the other hand, a groove wider than the thickness of the tip of the partition plate is provided in the part of the rectifier that faces the partition plate, and the groove is provided with a groove that is wider than the thickness of the tip of the partition plate. A refrigeration system characterized in that the tips are fitted with a gap so that the air heated by the heater also passes through the air passage facing the groove.
Air blowing section of refrigerated open showcase.