JPH0752546Y2 - Refrigerating / freezing refrigerant spraying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a refrigerant spraying device for freezing / freezing, which is mainly used for freezing / freezing (cooling) food.

[Prior Art] Conventionally, as a device for freezing or freezing food, Japanese Patent Laid-Open No.
There was one shown in the publication of -99456. In this device, refrigerant supply pipes are arranged in the upper part and both sides of the freezing chamber, and a plurality of spray nozzles are provided at these refrigerant supply pipes at intervals so as to be fixed to form a refrigerant spray device. Refrigerant is sprayed by the spray nozzle from above and on both sides of the object to be frozen placed in the room. Further, as disclosed in Japanese Patent Publication No. 59-26264, the above-mentioned 3
From the direction of a refrigerant and a blower, and JP-A-60-
As shown in Japanese Patent No. 62972, there is also one that conveys a frozen object horizontally by a conveyor and sprays a refrigerant onto the frozen object from above and below.

[Problems to be Solved by the Invention] In the conventional refrigerant spraying device as described above, the spraying nozzle is fixed to the refrigerant supply pipe in the freezing chamber to form the refrigerant spraying device,
Refrigerant such as brine is sprayed to the frozen object from the spraying nozzle, but since the spraying nozzle sprays the refrigerant in one direction, the unevenness of spraying may occur when the frozen object has a slightly complicated shape. There is a problem that it occurs, in the nozzle that sprays the refrigerant in one direction, even if the blower is also used to blow air, or the refrigerant is sprayed from both the upper and lower directions while horizontally transporting the frozen object, it has a complicated shape. There is a problem that the refrigerant cannot be evenly and sufficiently sprayed on the object to be frozen.

Further, these conventional devices are those in which the refrigerant is sprayed at a predetermined pressure and in a limited manner, and spraying at a desired refrigerant pressure according to the object to be frozen, other freezing / freezing methods such as immersion freezing. There was also a problem that could not be dealt with.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to sufficiently disperse a refrigerant even in an object to be frozen / frozen (cooled) having a complicated shape without causing uneven spraying. It is an object of the present invention to provide a refrigerant spraying device for freezing / freezing, which can adjust the pressure of the refrigerant to be sprayed and can also cope with other freezing / freezing methods such as immersion freezing.

[Means for Solving the Problems] In the refrigerating / freezing refrigerant spraying device according to the present invention, spraying nozzles for spraying the refrigerant to the refrigerant supply pipe provided in the freezing / freezing chamber and changing spraying directions are provided at intervals. Multiple refrigerants, and install the refrigerant passage between the freezing / freezing chamber and the refrigerant recovery chamber.
A controllable valve is provided in each of the auxiliary refrigerant return pipe connecting the upper part of the freezing chamber and the cooling chamber, and the refrigerant side pipe connecting the refrigerant delivery pipe on the pump discharge side and the cooling chamber.

[Operation] In the refrigerant distribution device according to the present invention, the valve of the refrigerant passage between the freezing / freezing chamber and the refrigerant recovery chamber is opened, the valves of the auxiliary refrigerant return pipe and the refrigerant bypass pipe are closed, and the refrigerant is pressure-fed through the refrigerant supply pipe. By changing the spraying direction of the refrigerant while spraying the refrigerant from the movable spray nozzle, the refrigerant is scattered and scattered on the object to be cooled such as the frozen object and the frozen object. In addition, the pressure of the refrigerant liquid to be sprayed is adjusted by appropriately adjusting the opening degree of the valve of the refrigerant side pipe to allow a part of the refrigerant liquid discharged from the pump to escape to the cooling chamber. Further, the valve of the refrigerant passage between the freezing / freezing chamber and the refrigerant recovery chamber and the valve of the refrigerant bypass pipe are closed, the valve of the auxiliary refrigerant return pipe is opened, and the refrigerant liquid sprayed from the movable spray nozzle is put into the freezing / freezing chamber. By storing and returning the refrigerant liquid having a predetermined liquid level or more from the auxiliary refrigerant return pipe to the cooling chamber, the liquid level of the refrigerant liquid is kept constant and the object to be frozen can be immersed and frozen.

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

FIG. 1 shows this embodiment. In FIG. 1, reference numeral 1 denotes a freezing / freezing (cooling) chamber, in which horizontal refrigerant supply pipes 2 are arranged in a plurality of upper and lower stages at positions close to both side walls 1a in the chamber 1, respectively. Is equipped with a plurality of movable spray nozzles 3 at required mutual intervals. The movable spray nozzle 3 is configured substantially in the same manner as the spray nozzle of an agricultural sprinkler that changes the spray direction of the refrigerant by spraying the refrigerant passing through the supply pipe 2 and rotating or oscillating the nozzle 3 by the pressure of the refrigerant. Has been done. The refrigerant supply pipe 2 is
A pump 5 installed outside the chamber 1 via a refrigerant transport pipe 4.
Of the pump 5, and the suction side of the pump 5 is connected to the cooling chamber 6 provided outside the chamber 1. A heat exchanger 8 of a refrigerator 7 provided below the chamber 1 is accommodated in the cooling chamber 6.

Further, below the bottom 1b of the chamber 1, there is provided a refrigerant recovery chamber 10 which communicates with the inside of the chamber 1 through a refrigerant passage 9, and the recovery chamber 10 is provided with the cooling chamber 6 and the refrigerant return chamber located below the recovery chamber 10. Connected by pipe 11. The refrigerant passage 9 and the refrigerant return pipe
Valves 15 and 16 are provided at 11. The upper part of the chamber 1 and the cooling chamber 6 are connected by an auxiliary refrigerant return pipe 17, and valves 19 and 20 are provided in a pipe line 18 connecting the auxiliary refrigerant return pipe 17 and the cooling chamber 6 to the suction side of the pump 5. It is provided. Further, the refrigerant transport pipe 4 and the upper part of the cooling chamber 6 are directly connected by a refrigerant side passage pipe 21, and a valve 22 is also provided in the refrigerant side passage pipe 21. The chamber 1 is provided with an entrance (not shown) having a door or the like on the front wall thereof, and a transport vehicle 13 loaded with the frozen object / the frozen object 12 can be moved into and out of the chamber 1.

Next, the operation of the embodiment configured as described above will be described.

First, the valves 15 and 16 provided in the refrigerant passage 9 and the refrigerant return pipe 11 and the valve 20 provided in the pipe line 18 connecting the cooling chamber 6 and the suction side of the pump 5 are opened to open the auxiliary refrigerant return pipe. 17 and a valve 19 provided in the refrigerant bypass pipe 21 and
Keep 22 closed. Then, the object to be frozen or the object to be frozen in the chamber 1
With the carrier 13 loaded with 12 inserted, the pump 5 is driven with the door of the door closed, and the refrigerant liquid cooled by the heat exchanger 8 in the operation of the refrigerator 7 is transferred to the refrigerant transport pipe 4. To the refrigerant supply pipe 2 and moving the nozzles 3 themselves while spraying the refrigerant liquid from the movable spray nozzles 3 to change the spray direction of the refrigerant liquid up, down, left or right, or both of them.
Refrigerant liquid is scattered and attached from the left and right sides to the surface of the frozen object or frozen object 12 loaded on a carrier 13. The scattered refrigerant is evenly scattered and evenly adheres to the surface of the frozen object / frozen object 12. The refrigerant liquid that did not adhere falls to the bottom 1b of the chamber 1, is collected in the refrigerant recovery chamber 10, is returned to the cooling chamber 6 via the refrigerant return pipe 11, and is cooled by the heat exchanger 8 of the refrigerator 7 inside the cooling chamber 6. It is cooled to a predetermined temperature and reused together with the remaining refrigerant liquid.

Next, open valves 15, 16 and 20 and close valve 19.
By appropriately adjusting the opening degree of the valve 22 provided in the pump 21, a part of the refrigerant liquid discharged from the pump 5 is transferred from the refrigerant side pipe 21 to the cooling chamber 6.
By letting it escape to, the pressure of the refrigerant liquid sprayed from the movable spray nozzle 3 can be changed and adjusted to a desired pressure. Further, by closing the valve 15 provided in the refrigerant passage 9 and opening the valve 19 of the auxiliary refrigerant return pipe 17 to operate, the refrigerant liquid sprayed from the movable spray nozzle 3 is stored in the chamber 1, and the auxiliary refrigerant return pipe 17 is stored. It is also possible to return the refrigerant liquid to the cooling chamber 6 from the above, and to immerse and freeze the object to be frozen while keeping the liquid surface of the refrigerant in the chamber 1 constant.

FIG. 2 shows another embodiment. In this embodiment, the refrigerant supply pipes 14 are provided in parallel with the refrigerant supply pipes 2 in a plurality of upper and lower stages from the center in the left-right direction of the rear wall where the inlet / outlet of the freezing / freezing chamber 1 is not provided. The movable spray nozzle 3 is mounted in the same manner as the refrigerant supply pipe 2 provided nearby, and the refrigerant supply pipe 14 and the movable spray nozzle 3 provided in these pipes are mounted on a carrier vehicle.
It is arranged at a position where it does not interfere with the frozen object and the frozen object loaded on 13 and this.

The structure and the basic operation of the refrigerant spraying device of the embodiment shown in FIG. 2 are the same as those of the embodiment shown in FIG. 1, and the same reference numerals as those of FIG. 1 in FIG. Indicates the same or a corresponding portion. That is, although not shown, this embodiment also has the pump 5, the cooling chamber 6, the refrigerator 7, the heat exchanger 8, the auxiliary refrigerant return pipe 17, the refrigerant bypass pipe 21, and the valve 16, similarly to FIG. It is equipped with 19,20,22. And
The refrigerant spraying device according to the embodiment shown in FIG. 2 can spray the refrigerant liquid not only from both sides of the carrier 13 but also from the center in the width direction thereof to both sides. Therefore, it is possible to more reliably and uniformly disperse the refrigerant liquid.

Further, in the embodiment shown in FIG. 2, the refrigerant supply pipes are provided at three positions on both sides and the central part, but this invention provides the above-mentioned supply pipes at four or more positions, and the vertical direction of these supply pipes. It is also possible to change the number of stages, and the movable spray nozzles may be provided in the upper portion or the lower portion of the supply pipe instead of the side portion, and the number of movable nozzles and the mutual interval can be changed.

In the present invention, when a liquid or gas that easily evaporates is used as the refrigerant, the object to be cooled can be cooled by the adjusted pressure and evaporation heat of the refrigerant itself without using the pump and the refrigerator. It is possible and has a high degree of freedom in selecting a refrigerant. Further, in this invention, the frozen object or the frozen (cooled) object may be conveyed by a conveyor.
Freezing (cooling) items are widespread in fish, vegetables, processed foods and similar products.

[Effects of the Invention] As described above, according to the present invention, the refrigerant to be pressure-fed through the refrigerant supply pipe is sprayed from the movable nozzle and the spraying direction is changed, so that the frozen object, the frozen object, etc. It is possible to spray the cooling medium in a scattered state on the object to be cooled, and thus even if the object to be cooled has a complicated shape,
The refrigerant can be sprayed evenly and evenly in a substantially even distribution.
As a result, the refrigerant adheres to the surface of the object to be cooled with little unevenness, and the object to be cooled can be frozen and frozen uniformly, and the pressure of the refrigerant to be sprayed can be adjusted. There is an effect that a refrigerant spraying device for freezing / freezing can be obtained which can cope with other freezing / freezing methods such as the above.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view showing a refrigerating / freezing refrigerant distributing device according to an embodiment of the present invention, and FIG. 2 is a schematic showing a part of a refrigerating / freezing refrigerant distributing device according to another embodiment of the present invention. It is a vertical sectional view. 1 ... Freezing / freezing chamber (freezing / freezing chamber), 2 ... Refrigerant supply pipe,
3 ... Movable spray nozzle, 4 ... Refrigerant transport pipe, 5 ... Pump, 6
... Cooling chamber, 9 ... Refrigerant passage, 10 ... Refrigerant recovery chamber, 11 ... Refrigerant return pipe, 12 ... Refrigerator / freeze object, 14 ... Refrigerant supply pipe, 15,1
6 ... Valve, 17 ... Auxiliary refrigerant return pipe, 19, 20 ... Valve, 21 ...
Refrigerant bypass pipe, 22 ... Valve. The same reference numerals in the drawings indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Seiji Tanaka, 2-6-2 Otemachi, Chiyoda-ku, Tokyo Ryoden Service Co., Ltd. (72) Yoshihiko Nomura, Serikawa-cho, Shimotoba, Fushimi-ku, Kyoto No. 34 stock company Nomurafuzu

Claims (1)

[Scope of utility model registration request] 1. Refrigeration to be frozen and into which the frozen matter 12 is carried
Freezing chamber 1, a refrigerant supply pipe provided in the freezing / freezing chamber 1 and provided with a plurality of spray nozzles 3 for spraying the refrigerant onto the frozen object / freezing object 12 and changing the spraying direction at intervals. 2, a cooling chamber 6 for cooling the refrigerant, a pump 5 having a suction side connected to the cooling chamber 6 and a discharge side connected to the refrigerant supply pipe 2 via a refrigerant transport pipe 4, the freezing / freezing chamber 1
A refrigerant recovery chamber 10 arranged below and communicating with the freezing / freezing chamber 1 through a refrigerant passage 9, a refrigerant return pipe 11 connecting the refrigerant recovery chamber 10 and the cooling chamber 6, the freezing / freezing chamber 1 Refrigerant return pipe 17 connecting the upper part of the cooling chamber 6 with the cooling chamber 6, and a refrigerant side pipe connecting the refrigerant transport pipe 4 with the cooling chamber 6
21, the refrigerant passage 9 between the freezing / freezing chamber 1 and the refrigerant recovery chamber 10, the auxiliary refrigerant return pipe 17, and the refrigerant side pipe 21
Refrigerant spraying device for freezing and freezing, in which controllable valves 15, 19, and 22 are provided respectively.