JPH0629651Y2 - Conveyor type refrigeration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The conveyor type refrigerating apparatus of the present invention is mainly used for continuously refrigerating an object to be frozen such as fresh food conveyed by the conveyor.

[Prior Art] A conveyor-type refrigerating apparatus for continuously freezing (cooling or freezing) an object to be frozen such as frozen food on a conveyor belt by injecting a low-temperature refrigerant onto the lower surface of the conveyor belt. However, it is difficult to uniformly inject the low-temperature refrigerant onto the lower surface of the conveyor belt, which causes a problem that unevenness in freezing occurs on the frozen object on the conveyor belt.

Therefore, in order to solve the above problems, a brine tank is provided on the lower surface side of the conveyor belt, and the low temperature brine in this brine tank is brought into contact with the lower surface of the conveyor belt to freeze the frozen object. Conventional freezing devices have been put to practical use.

Conventionally, this type of refrigerating apparatus supplies low temperature brine cooled by a brine cooler to a brine tank under a conveyor belt by a pipe.

[Problems to be Solved by the Invention] In the conventional conveyor type refrigerating apparatus, since the low temperature brine from the brine cooler is supplied to the brine tank under the conveyor belt by a pipe, the brine tank and the brine cooler are separated from each other. When the distance is long, there is a problem that the heat loss in the middle of the pipe is large and the refrigerating capacity is lowered.

Further, if the piping is long, the piping resistance increases, so that a pump with a large capacity is required to send the low temperature brine to the brine tank, and an extra power is also required, which is not economical.

The present invention has been proposed in order to solve such a conventional problem, and provides a conveyor type refrigerating apparatus which has no heat loss in a brine pipe and can improve refrigeration efficiency as compared with the conventional one. With the goal.

[Means for Solving the Problems] In order to achieve this object, the conveyor type refrigerating apparatus of the present invention is provided with a brine tank on the lower surface side of a conveyor belt that carries an object to be frozen and runs in the freezing chamber. A brine cooler is provided in the brine tank, and the brine in the brine tank is made to rise by a pump so that it comes into contact with the lower surface of the conveyor belt.

[Operation] In the present invention described above, the brine cooler in the brine tank cools the brine directly, and the cooled low-temperature brine is undulated by the pump and brought into contact with the lower surface of the conveyor belt. The above-mentioned object to be frozen is frozen.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In the figure, a driven roller for a conveyor is provided outside the freezer compartment 1.
3a and 3b are provided, and a driving roller 5a and a driven roller 5b which are rotated in the direction of arrow A by a motor 4 are provided outside the room.
Is provided, and the endless conveyor belt 6 hung on both left and right rollers travels in the freezer compartment 1 in the direction of arrow B. The belt 6 passes through a carry-in entrance 7 and a conveyor exit 8, a carry-out exit 9 and a conveyor entrance 10 that are opened on both side walls of the freezer compartment 1, and circulates the inside and outside of the freezer compartment 1.

The carry-in port 7 and the carry-out port 9 are provided with curtains or the like for preventing the cooling air from escaping outside the room.

In addition, a brine tank 11 is supported by a pedestal 12 near the lower surface of the conveyor belt 6 (on the side on which the object to be frozen 2 is placed) in the freezer compartment 1 and adjacent to the lower surface of the belt 6 and surrounded by the endless belt 6. Are arranged. In the brine tank 11, a brine cooler 14 is attached while being supported by a support base 15.
The low-temperature refrigerant from the cooling unit 16 is supplied to the respective cooling coils 14a of these brine coolers 14 through the feed pipe 17, and the refrigerant that has passed through the respective cooling coils 14a is returned to the unit 16 through the return pipe 18.

Further, a large number of vertical blow-out pipes 22 are provided in the brine tank 11, and the pump 19 sucking the brine in the brine tank from the suction pipe 20 sends it out from the discharge pipe 21 to the blow-out pipe 22. ing.

The height position of the outlet 22a of the blow-out pipe 22 is the lower position of the cooler 14. By setting the height position of the outlet 22a to the lower position of the cooler 14 in this way, the outlet of the blow-out pipe 22 is
The brine blown out from 22a causes brine 13 in the tank.
And the brine 13 is uniformly cooled by each cooler 14.

In the figure, the blow-out pipe 22 penetrates the bottom plate of the brine tank 11. However, the discharge pipes 21 may be arranged at the inner bottom of the tank and a large number of them may be started up from the discharge pipes.

In the above conveyor type refrigerating apparatus having this configuration, the brine 13 in the brine tank 11 is directly cooled by the plurality of coolers 14, and the cooled low-temperature brine is pumped out by the pump 19, but the blowout pipe 22 into the tank again. Is discharged vertically. This discharge causes the liquid surface of the low-temperature brine to swell, and the wave contacts the lower surface of the conveyor belt 6, so that the frozen material on the conveyor belt is directly frozen by the swelling brine 13a.

In this way, by providing the cooler 14 in the brine tank 11 to directly cool the brine 13 in the tank, heat loss is reduced as compared with the case where the low temperature brine is sent to the brine tank by piping as in the conventional case. The refrigerating capacity is improved.

An air cooler and a blower (not shown) are provided above the conveyor belt 6, and the object to be frozen 2 is also frozen by blowing cold air onto the object to be frozen 2 on the conveyor belt 6.

[Effects of the Invention] As described above, in the present invention, the low temperature brine in the brine tank disposed under the conveyor belt is made to wavy by the pump and brought into contact with the lower surface of the conveyor belt. They can be brought into close contact with each other, and there is no unevenness in freezing on the object to be frozen on the conveyor belt. Moreover, since the brine cooler is provided in the brine tank, there is no heat loss and the refrigerating capacity is improved as compared with the case where the low temperature brine from the conventional brine cooler is sent to the brine tank by piping.

[Brief description of drawings]

FIG. 1 is a block diagram of a conveyor bed type refrigerating apparatus according to the present invention. In the figure, 1 ... Freezing room, 2 ... Refrigerator, 3 ... Driven roller, 4 ... Motor, 5 ... Driving roller, 6 ... Conveyor belt, 7 ... Carrying port, 8 ... Conveyor outlet, 9 Carrying. Outlet, 10 …… Conveyor inlet 11 …… Brine tank, 12 …… Stand 13 …… Brine, 13a …… Ruffled brine 14 …… Brine cooler, 15 …… Support stand 16 …… Cooling unit, 17 …… Feed pipe 18 …… Return pipe, 19 …… Pump 20 …… Suction pipe, 21 …… Discharge pipe 22 …… Blowout pipe, 22a …… Outlet

Claims (1)

[Scope of utility model registration request] 1. A brine tank is provided on the lower surface side of a conveyor belt that carries an object to be frozen and runs in a freezing chamber, a brine cooler is provided in the brine tank, and the brine in the brine tank is undulated by a pump. Conveyor-type refrigeration equipment designed to contact the lower surface of the conveyor belt.