JPS6227339B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seal bumper for a differential pressure cooling device, and more particularly, the present invention relates to a seal bumper for a differential pressure cooling device, and more particularly, by providing a seal bumper on a wall surface on which an air intake port of a differential pressure cooling device is provided so as to surround the air intake port, The present invention relates to a seal bumper that improves the sealing performance between the object and the object to be cooled to increase the cooling efficiency, and also absorbs the impact when the object to be cooled is piled up and prevents damage to the wall surface.

Differential pressure cooling methods have recently been adopted for cooling agricultural products such as vegetables in warehouse-type refrigerators.

This differential pressure cooling method creates a positive pressure part and a negative pressure part in the refrigerator, and uses this pressure difference to move cold air.If there is a ventilation hole in the container that holds the agricultural products, the cold air will flow through the ventilation hole. It penetrates into the container and permeates into the gaps between the crops, cools the crops uniformly, and then escapes from the other ventilation hole, so there is no uneven cooling, and there is no sweating phenomenon when the crops are cooled. Has many advantages.

A refrigerator that applies this differential pressure ventilation type has a double-walled refrigerator wall to form a duct, an air intake at the bottom of the inner wall, an air outlet at the top, and a pressure fan installed at the air outlet. In general, the objects to be cooled are stacked in two blocks in front of the wall surrounding this air inlet, with a certain space in the middle, and this space is covered with an airtight sheet to make it a sealed space. By driving the fan,
This creates a pressure difference between the closed space and the inside of the refrigerator to cause cold air to move.

However, in this case, a gap is likely to occur between the stacked objects to be cooled and the wall surface, and cold air enters through this gap, making it impossible to effectively form a differential pressure. In addition, the objects to be cooled are placed on pallets and transported into the warehouse using a forklift, but when stacking them along the wall, the pallets or the objects to be cooled can impact the wall surface, causing damage to the wall surface. be.

The present invention was made to solve the above-mentioned drawbacks, and its purpose is to improve the airtightness between the wall surface and the object to be cooled, thereby increasing the differential pressure cooling efficiency, and to stack the object to be cooled along the wall surface. An air intake port is provided on the wall surface that can reduce the impact of lifting the air, and objects to be cooled are piled up surrounding the air intake port to form a space in front of the air intake port.
The open part of the space is covered with an airtight sheet, and the air in the space is sucked through the air intake port to create a pressure difference between the inside and outside of the space, thereby allowing cold air to penetrate into the gap between the objects to be cooled. A seal bumper for a differential pressure cooling device, characterized in that an elastic and airtight seal bumper is provided on a wall surface on a side where objects to be cooled are piled up, sandwiching the air intake port at least in the vertical direction. It is on offer.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows an example of a differential pressure ventilation type refrigerator.

In the figure, 10 is a refrigerator, and 12 is a refrigerator. At the bottom of the wall surface 14 of the refrigerator 10, there is an air intake port 16,
A discharge port 18 is provided at the top, and this air intake port 16
and the discharge port 18 communicate with each other through a duct 20,
A pressure fan 22 is installed at a suitable location within the duct 20.

Reference numeral 24 designates a seal bumper according to the present invention, which is made of an elastic and airtight part such as a space-filling rubber member or foamed urethane covered with an airtight sheet. Two seal bumpers 24 are disposed on the wall surface 14 having the air intake port 16 so as to sandwich the air intake port 16, reaching from above the air intake port 16 to the floor surface.

Reference numeral 26 denotes a sheet winding drum, which is horizontally rotatably disposed on the wall surface 14 above the seal bumper, and whose central shaft 28 is connected to a drive shaft 32 of a winding motor 30 via a coupler. has been done.
An airtight sheet 34 is wound around the drum 26, and the airtight sheet 34 can be made to cover the front of the wall surface 14 by input or by reversing the winding motor 30.

It is sufficient that the seal bumper 24 is provided at least in the vertical direction, sandwiching the air intake port 16 as described above, but as shown in FIG. Alternatively, as shown in FIG. 4, a plurality of air intake ports 16 may be provided vertically on both sides of the air intake port 16.

Furthermore, as another example of the differential pressure ventilation device, as shown in FIG. 5, there is a built-in ventilation fan, and
A blower unit 38 having a discharge duct 36 at the top and an air intake port (not shown) on the wall surface is conceivable.
This air blower unit 38 is provided with a seal bumper 24 and an airtight sheet 34 surrounding the air intake port in the same manner as described above.
may be provided. This blower unit 3
Reference numeral 8 is movably arranged inside the refrigerator, and sucks cold air inside the refrigerator from an air intake port and blows it out into the refrigerator from a discharge duct 36.

Next, the operation of the present invention will be explained.

First, as shown in FIG. 1 and FIG.
The blocks are stacked in two blocks surrounding the air intake port 16 in front of the block so that there is a certain space in the middle. In this case, the ends of the first container 40' and the pallet 42 come into contact with the seal bumper 24, which reduces the impact during stacking and also protects the container 40' and the wall surface 14.
airtightness is maintained. That is, as shown in FIG.
Even if the wall surface of 0' or the end surface of the pallet 42 is not straight but has an uneven surface, the convex portion of the seal bumper 24 bites into the seal bumper 24 due to its elasticity, and as a result, the seal bumper 24 may extend into the concave portion. are in contact with each other to maintain airtightness.

Note that the pallet 42 has at least one side surface closed, leaving a hole for the fork insertion, and the closed surfaces are arranged in series to surround the air intake port 16, so that the air flow from the side surface of the pallet 42 is prevented. Prevent air inflow.

After stacking the containers 40, the airtight sheet 34 is pulled out and covers the top surface of the containers 40, leaving the air intake port 16 side open, so as to seal the space. Next, by driving the blower fan 22, the air in the space is sucked through the air intake port 16 and discharged into the refrigerator 10 through the discharge port 18.
A pressure difference is created between the refrigerator 10 and the space surrounded by the container 40, and cold air enters the container 40 through the vent hole of the container 40. The cold air that has entered is sucked toward the air suction port 16, and after penetrating into the gaps between the crops in the container 40 and uniformly cooling the crops, it is returned to the warehouse from the discharge port 18 via the air suction port 16. It is something that is discharged.

Note that when the container 40 is small and the seal bumper 24 is exposed above the container 40, the airtight sheet 34 is hung along the wall surface so as to cover the seal bumper 24 to cover the wall surface 14, and the container 40 is further exposed. Cover the top side as before.

When the blower fan 22 is driven, the airtight sheet 34 straddles the exposed seal bumper 24 due to the suction force, as shown in FIG.
Airtightness can be maintained by being in close contact with.

Furthermore, if a plurality of seal bumpers 24 are provided on both sides of the air intake port 16 as shown in FIG.
By abutting on more than one seal bumper 24, it is convenient to easily stack them parallel to the wall surface.

As described above, according to the present invention, the sealing performance between the wall surface and the object to be cooled is extremely good, there is no unnecessary pressure leakage, and the differential pressure cooling efficiency can be improved. Moreover, it is effective in absorbing the impact on the wall surface when the objects to be cooled are piled up and preventing damage to the wall surface.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view showing an example of a differential pressure ventilation type refrigerator, and FIGS. 2 to 4 are front views showing preferred embodiments of the seal bumper according to the present invention. FIG. 5 is an explanatory diagram showing a portable blower with a seal bumper attached thereto, and FIGS. 6 and 7 are explanatory diagrams each showing the state in use. 10...Refrigerator, 12...Freezer, 14...Wall surface, 16...Air intake port, 18...Discharge port, 20...
Duct, 22... Pressure fan, 24... Seal bumper, 26... Sheet winding drum, 28... Center shaft, 30... Winding motor, 32... Drive shaft, 3
4...Airtight sheet, 36...Discharge duct, 38...
...Blower unit, 40... Container with vent, 42...
Palette.

Claims (1)

[Claims] 1 An air intake is provided on a wall surface, objects to be cooled are piled up surrounding the air intake to form a space in front of the air intake, the open part of the space is covered with an airtight sheet, and the air in this space is In a differential pressure cooling device that infiltrates the gap between the objects to be cooled by suctioning through the air vent and creating a differential pressure between the inside and the outside of the space, the wall surface on the side where the objects to be cooled are stacked is made of elastic and airtight material. 1. A seal bumper for a differential pressure cooling device, characterized in that a seal bumper having a high temperature is provided at least in the vertical direction across the air intake port.