JPS5878575A - Continuous vacuum cooler - Google Patents

Abstract

PURPOSE:To obtain a continuous vacuum cooler for cooling the central parts of foods quickly without damaging their fragrance, by providing the cooler comprising a precooling means, the first preliminary chamber, a vacuum cooling means, and the second preliminary chamber. CONSTITUTION:Foods are placed on the tray 14, sent to the precooling chamber 13, precooled by cold air blown from the cold air device 15 by the air sending device 12, and transferred to the inlet of the first preliminary chamber 2. The door 21 is opened, and the foods are introduced into the first preliminary chamber by the air cylinder 28, the door 21 is closed, the chamber is made in a sealed state, the pressure is reduced, and the foods are then sent to the vacuum cooling chamber 30. The foods are sent to the inlet of the second preliminary chamber 4 by the conveying means 33, transferred to the second preliminary chamber 4, and the pressure in the chamber is restored to the atmospheric pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous vacuum cooling device, and in particular to a continuous vacuum cooling device that rapidly and effectively cools down to the center of food without impairing its aroma. Bread baked at 100°C to 80°C using an automatic bread machine (
Surface temperature approximately 97℃.

If the center temperature is about 77°C) or if the cake is allowed to cool naturally, the β-oxidation of the chili powder will progress and the aroma and taste will be significantly reduced.

To avoid this, attempts have been made to rapidly cool baked foods/kun and cakes by blowing them with extremely low temperature liquid nitrogen gas, and then store them in a freezer at about -20°C. However, due to their structure, they have poor thermal conductivity, so cooling with liquid nitrogen or a freezer does not cool the center quickly.Moreover, with this cooling method, the cooling energy and cooling time are low. Because it requires a lot of
It also increases costs.

An object of the present invention is to provide a continuous vacuum cooling device capable of rapidly and effectively IC cooling up to the center of food without impairing its aroma.

The present invention will be described in detail below based on embodiments and with reference to the drawings.

The device of the present invention includes a preliminary cooling means 凰, a first preliminary chamber 2,
The pre-chamber 2 with the vacuum cooling means 8 and the second reserve 4 communicates with the pre-cooling means l via a gas-tight inlet -21. Vacuum cooling middle stage 3.

Spare room in vh1 spare room 2! It communicates through an airtight exit door 22. The s2 reserve N4 communicates with the vacuum cooling means 3 via the airtight inlet door 4B and communicates with the outside of the system via the airtight outlet door 42.

The pre-cooling means 1 consists of a pre-cooling chamber 18.

The preliminary cooling fi1B is carried out by the conveyor means 11 and the blower means 12.
and has. The conveyor means 11 moves the food placed on the placing tray i4 from outside the system to the entrance of the first reserve N2 at a predetermined speed. The air blowing means 12 is.

This device sends cold air to the food while the food moves in the pre-cooling chamber 18. For example, a plurality of injection nozzles 120 provided along the movement process of the food and a blade 121 are further rotated to send the cold air to the pre-cooling chamber 18. A blower 122 is provided to blow air into the cooling II 11. This cooling room has a cold air generation value of 15! Air blowing means 12 is arranged in B and is routed through pipe 161.
sent to.

The 1m1 preliminary chamber 2 is connected to an atmosphere pipe 24 which communicates with the atmosphere through a pulp 23 and a vacuum tank 2 through a pulp 25.
6. This spare room 2
Further, the precooling chamber 130 has a carrying means 289, such as an air cylinder, for carrying the food into the s1 preliminary chamber z.

This first preliminary room 2 has an entrance/exit door 21.2S! , transportation means! 8. Atmospheric pulp gijd and vacuum valve 2S
The internal pressure is made equal to the western pressure of the vacuum cooling means 3 by the cooperative operation of the vacuum cooling means 3.

The vacuum cooling means 3 is a vacuum cooling chamber 30 connected to a vacuum tank s1, and serves to cool one food item. This vacuum cooling chamber 30 includes a supply means 32 for supplying the food in the first preliminary chamber 2 to the vacuum cooling chamber, for example, an air cylinder and a conveyor means 8B for moving one food product at a predetermined speed to the entrance of the second preliminary chamber 4. has.

The second preliminary chamber 4 is connected to an atmosphere pipe 44 communicating with the atmosphere via a valve 4m and a vacuum tank 81 via a valve 4s.
It has a vacuum piping 46 communicating with. This preparatory chamber 4 further includes a carry-out means 47, for example, an air cylinder, and 9 for carrying out the food in the vacuum cooling room sO to this yJg pre-N4.
It has a take-out means 48, such as a conveyor belt, for taking out the food out of the system. This second preliminary room has one entrance/exit door 41.
4L unloading hand R47, atmospheric valve 43. Vacuum valve 4
6 and the extraction means 48, the internal pressure thereof is made equal to atmospheric pressure.

The food to be cooled is placed on a food container 14 and conveyed into the precooling chamber 13 by a conveyor 6 leading to the opening 10 of the precooling means 1 . The food is moved at a predetermined speed through the pre-cooling chamber 18 to the entrance of the first reserve N2 by the conveyor means 11, and is pre-cooled by being blown with cold air from the cooling device LL& via the blower means 12. 1st
When the food reaches the entrance of the reserve N2, the first reserve chamber entrance door 21 is opened and the air cylinder 28 is operated to transport the food into the first reserve chamber. Once the food is brought in, the entrance doors 2, 1 are closed and the first pre-gi 1 chamber 2 is sealed. By operating the valve 26, the preliminary chamber 2 is gradually depressurized. When the pressure in the preliminary chamber 2 becomes equal to the internal pressure of the vacuum cooling chamber 30, the preliminary chamber outlet door 22 is opened, the air cylinder 32 is activated, and the food in the preliminary chamber 2 is supplied to the vacuum cooling chamber sO. This food is moved at a predetermined speed to the entrance of the s2 preliminary chamber 4 by the conveyor means 33 within the vacuum cooling N80. During this time, please urgently buy food 4
[Cooled. The outlet door 22 of the first preliminary chamber 2 is closed, and the internal pressure of the first preliminary chamber 2 is set equal to atmospheric pressure by operating the valve 3!3 in preparation for the next food delivery.

When the food moving in the vacuum cooling N30 by the conveyor means SSC reaches the entrance of the ml preparatory chamber 4, the internal pressure of the vacuum cooling chamber 30 is set equal to the @! ! The entrance door of the preliminary room 4 is opened. Next, the air cylinder 47 is operated to send the food into the s2 preliminary chamber 4. Entrance door 41
is closed, and this second reserve N4 is opened by operating the valve 43.
The pressure inside is set to be equal to atmospheric pressure. During this time, the food is being moved to the exit of the preliminary chamber by the belt conveyor 48. Then, the exit door 42 is opened and the cooled food is taken out of the system.

The pre-cooling means 1 gently cools the food by blowing air, and is therefore particularly useful for pre-cooling foods such as half-eaten bread and cakes which have a problem of odor. With this pre-cooling means 1, for example, the surface layer of bread that is at 97°C can be cooled down to about 60°C. For foods that must not be cooled while retaining their aroma, it is necessary to lower the surface temperature to about 60° C. or lower before main cooling using a vacuum. The blown air does not need to be cooled in advance; for example, room temperature air can be used. It is also possible to use a small amount of liquid nitrogen. Processing of foods with very low heat conductivity or foods with extremely poor heat conductivity 1
r also prevents the growth of microorganisms.

This preliminary cooling means 1 can be omitted. In this case, the pre-cooling means 1 can function only as a means for transporting the food outside the system to the entrance of the first pre-chamber 2 without supplying air. By appropriately adjusting the valves 23 and 25 of the first preliminary chamber 2, the first preliminary chamber 2 can also have a function as a preliminary cooling chamber. The conveyor means 11 is conveyed via a conveyor shaft 14 and a gear 81.

The conveyor means 8B has a conveyor shaft 84 and a gear 82, each of which is driven by the deceleration motor 8.

The switchboard 7 Gr allows the entire apparatus of the present invention to be operated automatically.

Since the apparatus of the present invention has such a structure and function, it can rapidly and effectively cool food even at its center mt.

[Brief explanation of drawings]

The figure is a front sectional view showing an embodiment of the device of the present invention. 1-Preliminary cooling means, 2--Second provision, 8-Vacuum cooling means, 4--Second preliminary chamber, 11.811-Conveyor means, 14-Food placement tray, 2! Lll-vacuum tank. that's all

Claims (1)

[Scope of Claims] L (1) A first preliminary chamber in which food outside the system is stored by opening an airtight inlet door, a vacuum cooling means communicating with the first preliminary chamber via an airtight exit door, vI It has a second auxiliary chamber which communicates with the vacuum cooling means through an airtight inlet door and communicates with the system external crystal through an airtight exit door. (The s1 preliminary chamber has an atmospheric pipe that communicates with the atmosphere through a valve, a vacuum pipe that communicates with the vacuum tank via a valve, and a means for transporting food from outside the system into the preliminary chamber. (S1# vacuum cooling means is a vacuum cooling chamber connected to a vacuum tank, the # vacuum cooling chamber is a supply means for supplying the food in the first preparatory chamber to the vacuum cooling 1 (4) The second preparatory chamber has a conveyor means for moving the pulp at a predetermined speed to the entrance of the second preparatory chamber. (4) The second preparatory chamber communicates with the vacuum tank through a valve for atmospheric piping that communicates with the atmosphere via the pulp. It has a vacuum piping, a carry-out means for carrying out the food in the vacuum cooling chamber to the s2 preliminary chamber, and a take-out means for taking out one food to the outside of the system. Continuous vacuum cooling device. λ For the I81 preliminary chamber. The apparatus according to claim 1, wherein the vacuum tank, the vacuum tank for the vacuum cooling chamber, and the vacuum tank for the s2 preliminary chamber are connected to the vacuum device via piping. , the apparatus according to claim IJ1, which is configured such that the internal pressure thereof becomes equal to the six-point pressure of the vacuum cooling chamber through the cooperative operation of the carrying means, the atmospheric pulp, and the vacuum pulp. is the apparatus according to claim 1, wherein the apparatus is configured such that its internal pressure is equal to atmospheric pressure through the cooperative operation of its entrance/exit door, carrying-in means, atmospheric valve g, and vacuum valve. The apparatus according to claim 1, wherein the food taking out means is a belt conveyor.a(1) A cooling means for storing and precooling the food outside the system through an opening, and #precooling. a first preliminary chamber communicating with the means via an airtight inlet door; a vacuum cooling means communicating with the preparatory seal through an airtight outlet door for main cooling the food; and an airtight inlet door to the vacuum cooling means. and a second pre-cooling chamber that communicates with the outside of the system via an airtight exit door. 131# The first preliminary chamber is a pre-cooling chamber having an air blowing means for sending cold air to the food while the food is being moved. It has a vacuum piping communicating with the vacuum tank and a carrying means for carrying the food in the pre-cooling chamber into the pre-cooling chamber. 141 The vacuum cooling means is a vacuum cooling IPH connected to the vacuum tank, and The cooling chamber has a supply means for supplying the food in the #1 preparatory chamber to the vacuum cooling chamber, and a conveyor means for moving the food at a predetermined speed to the entrance of the aug reserve. tail #*1! The preliminary room is equipped with atmospheric piping that communicates with the atmosphere through the pulp, vacuum piping that communicates with the vacuum tank through the pulp, a means for conveying the food in the vacuum cooling chamber to the +42 preliminary chamber, and one food system. and a means for taking out the material. Continuous vacuum cooling equipment. 7. The device according to claim 536, wherein the blowing means is a plurality of injection nozzles provided along a food transporter. 8L. The device according to claim 1, wherein the blowing means further includes a blower that sends cold air into the room while rotating blades.