JPH0548042Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sterile cooling device for cooling food products whose quality deteriorates due to adhesion of bacteria.

[Prior art and its disadvantages] When cooling objects to be cooled such as food, in order to prevent bacteria from adhering to the objects to be cooled, it is necessary to turn the entire room in which the cooling device is installed into a clean room that is close to sterile conditions, or to stop the cooling operation. In order to suppress the growth of bacteria inside and outside of the cooling equipment, which has risen in temperature while it is inactive, sterilization is performed using ozone gas.

However, in order to prevent bacteria from adhering to objects to be cooled using this method, it is necessary to sterilize the entire room where the cooling device is installed, which requires high equipment costs for sterilization. Become.

Furthermore, since ozone gas has an adverse effect on the human body when the concentration is high, ozone gas remaining in the room after sterilization with ozone gas poses a problem.

[Purpose of the present invention] The present invention can reduce the size of sterilization equipment by limiting the space to be sterilized, and also reduces the danger to the human body caused by residual ozone after sterilization with ozone gas. We have made it possible to provide a sterile cooling device that can prevent germs as much as possible.

[Means] In order to achieve the above object, the sterile cooling device according to the present invention is provided with small chambers adjacent to the cooling chamber that communicate with the cooling chamber entrance and exit of the cooling device for cooling objects to be cooled, and each of the small chambers A sterile air supply unit with a high-performance filter is installed in the cooling chamber, and ozone gas is supplied to the cooling chamber and each small chamber during cooling operation suspension.

[Function] During cooling operation of the sterile cooling device, air sterilized by a high-performance filter is supplied from the sterile air supply unit to each small chamber, and the cooling chamber and each small chamber communicate with each other through the entrance and exit of the object to be cooled. becomes a sterile space.

While the cooling operation of the sterile cooling device is suspended, ozone gas is supplied to the cooling chamber and each small room to sterilize the room.

By restarting the cooling operation of the sterile cooling device, sterile air is supplied from the sterile air supply unit to each small room again, and the residual ozone in the small room is diluted and discharged to the outside.

[Example] Next, a specific example of the sterile cooling device according to the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 denotes, for example, a main body of an air blast type sterile cooling device, in which cool air is circulated within the room by means of an air blower and a cooling coil 4 arranged in a cooling chamber 2.

The cooling chamber 2 has an opening 2 that serves as an entrance and exit for the object to be cooled 5.
an entrance/exit clean booth 6, which is a small chamber with openings a and 2b and communicates with the cooling chamber 2 through each opening;
a and 6b are provided adjacent to the cooling chamber 2, respectively.

Each clean booth is provided with a sterile air supply unit 8, 8 each having a high performance filter 7, and this sterile air supply unit 8 supplies the air sucked in by, for example, a fan 9 with a high performance filter 7.
It is sterilized by passing through the clean booth 6.
It is intended to supply sterile air to a and 6b.

The sterile cooling device 1 is also provided with a belt conveyor 10 that extends from the inlet clean booth 6a, through the cooling chamber 2, to the outlet clean booth 6b, for example.
The object to be cooled 5 placed on the belt of this endlessly rotating belt conveyor at the entrance clean booth 6a passes through the cooling chamber 2 and passes through the exit clean booth 6.
This leads to b.

Further, ozone supply pipes 12a, 12 connected to the ozone generator 11 and having a nozzle at each tip.
b, 12c respectively inlet clean booth 6a,
The ozone is guided to the cooling chamber 2 and the exit clean booth 6b, thereby making it possible to supply ozone to each chamber.

In the sterile cooling device configured as above,
Belt conveyor 10 at entrance clean booth 6a
The object to be cooled 5 placed on the belt is appropriately cooled as it passes through the cooling chamber 2 along with the endlessly rotating belt, and reaches the exit clean booth 6b.

Therefore, sterile air is supplied to the entrance and exit clean booths 6a and 6b by the sterile air supply unit 8, and the inside of each clean booth is maintained in a sterile state. When the object 5 to be cooled comes out from the cooling chamber 2, bacteria will not adhere to the object 5 to be cooled.

During cooling operation suspension, ozone gas generated by the ozone generator 11 is supplied to the ozone supply pipes 12a and 12.
The ozone gas is supplied to the inlet clean booth 6a, cooling chamber 2, and outlet clean booth 6b through ozone gas b and 12c, and the ozone gas sterilizes each chamber and maintains each chamber in a sterile state until the cooling operation is restarted.

When the cooling operation is restarted, sterile air is supplied from the sterile air supply unit to each inlet/outlet clean booth 6a, 6b, the ozone gas remaining in each clean booth is diluted, and furthermore, the ozone gas remaining in each clean booth is The air is discharged from an appropriately provided air outlet.

[Effects] As explained above, the sterile cooling device according to the present invention has the space necessary for entering and exiting the cooling chamber into and out of the cooling chamber as small chambers adjacent to the cooling chamber. Since it is a sterile space to prevent germs from adhering to objects, there is no need for huge equipment to sterilize the entire room where the cooling device is installed.

Furthermore, by sterilizing the cooling chamber and each small chamber with ozone gas while the cooling operation is suspended, each chamber is maintained in a sterile state until the cooling operation is resumed.

Furthermore, when the cooling operation is resumed, sterile air is supplied to each small room from the sterile air supply unit, so the residual ozone in each small room is diluted and discharged outside, causing the residual ozone to be harmful to the human body. can eliminate the negative effects of

In this embodiment, the cooling method of the sterile cooling device is an air blast method, but the method is not limited to this.

[Brief explanation of the drawing]

The accompanying drawing is a longitudinal sectional view of the sterile cooling device according to the present invention. In the figure, 1... Sterile cooling device, 2... Cooling room, 2
a, 2b...Opening, 3...Blower, 4...Cooling coil, 5...Object to be cooled, 6a...Inlet clean booth, 6b...Outlet clean booth, 7...High performance filter, 8... Sterile air supply unit, 9
...Juan, 10... Belt conveyor, 11...
Ozone generator, 12a, 12b, 12c... ozone supply pipe.

Claims (1)

[Scope of utility model registration request] Small chambers communicating with the cooling chamber entrance and exit of the cooling device that cools the objects to be cooled are provided adjacent to the cooling chamber, each of the small chambers is equipped with a sterile air supply unit having a high-performance filter, and the cooling operation is suspended. A sterile cooling device characterized in that ozone gas is supplied to a cooling chamber and each small chamber inside.