JPS62138670A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a freezing apparatus for effectively freezing fresh foods.

The present applicant previously proposed Japanese Patent Application No. 128465/1983 regarding the freezing of fresh foods using an aqueous ethyl alcohol solution. The present invention relates to an apparatus for carrying out the invention of the application more effectively, and its feature is that an evaporator is disposed with a certain gap between the upper and lower parts of a bath containing an aqueous solution of ethyl alcohol. In addition to this, a conveyor belt is provided for placing the object to be frozen and passing through the gap.

An example of implementing the present invention will be described below based on the drawings.

(2) is the main body of the device, and (2) is a horizontally long bathtub placed inside the bathtub with a heat insulating material 3 in between.
``It has a built-in aqueous solution 4 of 50% and 50% water.

5 and 6 are located below and above the bathtub, the former covering approximately the entire length of the tank, the latter being an evaporator placed approximately in the center of the tank, and 7 being sandwiched between both evaporators in the horizontally long tank. It is a conveyance means that enters from one end and exits at a curved end. The conveying means in this case consists of a lower conveyor belt 8 and an upper conveyor belt 9. The lower conveyor belt 8 is arranged in a V-shape above the lower evaporator 5, but the upper conveyor belt 9 is arranged above the upper evaporator 5. 6 in the length direction.

Therefore, each of the conveyor belts 8 and 9 is attached to the endless chain belts 10a, 10b, and lla and llb, which rotate at both left and right side positions in the bathtub.Specifically, the endless chain belts 10a and 10b are Bearing stands 12a and 12b are arranged opposite each other as a pair at positions slightly further back and forth outside the bathtub.
, 13a, 13b via shafts 14 and 15, respectively, chain portions 16a, 16b and 17a, 17'.
Bracket plates 18a, 1 are rotatably supported via brackets 18a and 18b at the inlet and outlet portions of the bathtub, respectively.
8b, 19a, 19b, and a plurality of sprockets 22 rotatably supported from the left and right walls of the bathtub via bearing plates. It is formed in a V-shape with a gentle downward slope and upward slope as a whole, and the rotation of the chain band is 1I.
This is done by rotating the chain portion 23 attached to the Il 1114 via the chain 725 by the drive of the motor 24 with a speed reducer.

On the other hand, the endless chain bands 11a and ll'b are connected to the outer periphery of the upper evaporator via a large number of rotatable sprockets 27 on bearing plates attached to the left and right walls of the bathtub.
a, lob and a similar V-shape that maintains a constant distance S in the bathtub, and the rotation of the chain band is caused by the chain band 11a, ll'l.
) is pulled out to the upper part of the entrance side of the bathtub, and a chain part 29a is supported by shaft bearings 28a and 28b arranged opposite to this part.
, 291), another chain part 31 is provided at one end of the shaft 30 that connects both chains, and a check 733 is connected between the chain part 31 and another chain part 32 provided on the shaft 14. By connecting the lower endless chain band 10 with the drive of the motor 24,
It is designed to be rotated in synchronization with the rotations of a and 10'b. Although not shown in the drawings, a chain portion for tension adjustment is provided along with the upper and lower chain bands.

35 is a W4 ring pump, 36 is a static mixer (honeycomb mixer), and the antifreeze in the bathtub 2 is fed to the chain ring pump 3 through a suction v38 from a through hole 37 bored in the upper part of the bathtub.
5, the liquid is taken out through a static mixer 36, and then blown out from a discharge pipe 39 disposed at the bottom of the bathtub 2. For this purpose, there are many A discharge hole 40 is formed upward. In addition, in the drawing, 41 is a refrigerator, 42a, 421) are refrigerant introduction pipes, and 43a
, 481) is a refrigerant outlet pipe, and 44 is a temperature sensor.Next, to explain the operation, when the refrigerator 41 is turned on, the inside of the bathtub is heated by the heat exchange action of the steamer 5.6. The ethyl alcohol aqueous solution is rapidly cooled, and its temperature is -60°C.
Even ultra-low temperatures of 'c' are possible. On the other hand, motor 2
4 to rotate the upper and lower conveyor belts 9 and 8, and place raw foodstuffs, such as sea bream and sweetfish, to be frozen on the lower conveyor belt 8 on the entrance side of the bathtub 2. Accordingly, the object to be frozen is pinched between the upper conveyor belt 9 and the upper conveyor belt 9 at the entrance to the bathtub 2, carried into the ultra-low temperature antifreeze solution in the bathtub 2, subjected to constant ++: flfil i Ft, and then conveyed to the exit side. It becomes something that can be taken out.

At this time, the antifreeze in the bathtub is taken out through the suction pipe 38 by the drive of the chain ring pump 35, mixed by the static mixer 36 to activate the bond between ethyl alcohol and water, and then placed in the bathtub. It is blown out from the through hole of the discharge pipe 39.

According to the device of the present invention, the thickness is 30 MM at an antifreeze temperature of -30°C.
It takes 18 minutes to freeze sea bream, 9 minutes for flounder with a thickness of 15, 4 minutes for shrimp with a thickness of 13 rtx, and 25 minutes in thickness.
For example, it takes 7 minutes for ayu with feathers, which is 1 time compared to conventional freezing or spraying with liquefied gas, which doubles productivity, and also reduces the freezing time. The short length is also very good for maintaining freshness.

During implementation of the present invention, the temperature sensor 44 senses changes in the temperature of the antifreeze in the bathtub 2 and automatically controls the feeding speed of the conveying means for the frozen object to a required speed.

In the above embodiment, a conveyor belt is used as the means for transporting the frozen object, but the upper evaporator 6 is removed and the frozen object is immersed in the bathtub for a certain period of time via a basket or other means, and then pulled out. There is no problem in implementing it at work, and this is another example of implementing the present invention.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the device, and FIG. 2 is a plan view thereof. 1... Apparatus body 2... Bathtub 5.6... Evaporator 7... Transport means 10a, 1
0b, lla, 1lb --- infinite chain band 16a, 1
6b, 17a, tub, chain part 24...
Motor with reducer 35 ... Circulation pump 36 ・
...Static mixer 38 ...Suction pipe 39
・・・Discharge pipe 44 ・・・Temperature detector patent applicant Fukushin Iron Works Co., Ltd. Manager Patent attorney Hirotoshi Oguma Procedural amendment March 31, 1986 Showa 6011- Patent m No. 279629 2 Invention Name Refrigeration Equipment Slow 3 Relationship with the case of the person making the amendment Address of the owner of the license 13-12 Tawara 7, M Teshiro-cho, Kakiyama-shi Name Nobu Akira Co., Ltd. Chichiko 4, Agent Address: 6-6, Minamicho, Fukuyama City, Yama [Yi Building 5] Date of amendment order: February 25, 1985 (,,,+,,
1 (, 5, > 6 Number of inventions increased by amendment 7 Target of amendment

Claims (2)

[Claims] (1) An evaporator is placed at the top and bottom of a bath containing an aqueous solution of ethyl alcohol so that there is a certain gap therebetween, and a conveyance means is placed in which the object to be frozen is placed and passes through the gap. A refrigeration device characterized by: (2) The refrigeration apparatus according to claim 1, wherein the traveling speed of the conveyance means is appropriately controlled according to the temperature inside the tank.