JPH0747351A - Production of deaerated water for food processing and device therefor - Google Patents

Abstract

PURPOSE:To obtain deaerated water at an extremely low cost and to use this water to processed food with its quality being less deteriorated by filling a closed vessel with the prescribed quantity of water preheated at a prescribed temp. heating the water until it boils and evacuating the closed vessel for a prescribed time after boiling. CONSTITUTION:A space between a deaeration tank 32 and a heating tank 31 is filled with about 34l water, and in this state, water is stored in a preheating tank 34 from a city water faucet 37, and a heater 35 is energized to heat the stored water to a prescribed temp. After that, the stored water is introduced into the deaeration tank 32. Then, a valve 49 is closed to seal the deaeration tank 32, and gas heating is performed from below. By this heating, water filling the deaeration tank 32 having an inner volume of about 30l begins to boil within about 30min depending on weather, room temp., etc., of that day. When the water boils, a motor 44 is energized to drive a vacuum pump 42, allowing the deaeration tank 32 to be evacuated for a prescribed time. In this way, deaerated water low in dissolved oxygen quantity and high in quality is easily obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing deaerated water for food processing and an apparatus for producing the same.

[0002]

2. Description of the Related Art Conventionally, in food processing such as konjac, tokoroten production, Japanese confectionery production and Tsukudani production,
From the viewpoint of transparency, texture, taste etc. of the finished food,
It was necessary to remove entrained air and other contaminants from the water used.

When water used for food processing contains a large amount of impurities such as air, the quality of processed foods to be finished is not uniform, and therefore, there are subtle differences in taste. This is because, when tap water containing chlorine is used, the finished food product has a "rough" texture and the taste is astringent. In order to solve this problem, what is called a degassed water producing apparatus is used which removes air and other impurities mixed in by using a hollow fiber as the water to be used or an activated carbon filter or the like.

FIG. 2 shows an outline of an apparatus for obtaining such degassed water. In FIG. 2, 1 is a tap, and 2
Is a feed water inlet, 3 is a pressure switch, 4 is a pressure reducing valve,
5 is a prefilter having a transmittance of 100 μ (micro), 6 is a vacuum gauge, 7 is a degassing module, and 8 is
Solenoid valve for sealing water, 9 is leak valve for vacuum breaking, 10 is pressure switch, 11 is antibacterial fibrous activated carbon, 12 is water sealing vacuum pump, 13 is degassing water outlet cosmetic valve, 14
Is a treated water outlet, and 15 is a sealed water drainage outlet. Tap 1
The water from the water is adjusted in the inflow pressure and the inflow rate by the supply water inlet 2, the electromagnetic valve 3 for sealing water, and the pressure reducing valve 4 set to the set pressure of 2.0 kg / cm ² , and then passes through the prefilter 5. After removing relatively large dust, the water-sealed vacuum pump 12 is sucked through the water-sealing solenoid valve 8 and discharged at a predetermined pressure.

The water discharged from the water-sealed vacuum pump 12 at a predetermined pressure passes through the degassing water module 7 to deaerate impurities such as air mixed in the water, and further by the antibacterial fibrous activated carbon 11. After the remaining impurities are removed by non-adhesion, the treated water outlet 14 is discharged as deaerated water through the deaerated water outlet decorative valve 13, while the water-sealed vacuum pump 12 is sealed through a sealed water drainage port 15. The water is drained. The degassed water thus obtained is used for the above-mentioned konjac, the production of Tokoroten, the production of Tsukudani, the production of Japanese confectionery, the production of coffee, the production of transparent ice, the pack water of Sozai, etc. By using, respectively, with transparency, ice with a low white turbidity, soft and hard to tear, excellent elasticity, uniform and smooth konjac without bubbles, place Ten, there is no boiling misalignment, and slime due to oxidation is suppressed. , Evenly boiled Tsukudani, low-transparency Japanese sweets, coffee, etc.

[0006]

However, although the use of such degassed water is excellent in food processing, the use of hollow fibers and activated carbon inevitably leads to running problems. It has the drawback of being expensive and resulting in high costs.

Further, in the method for producing deaerated water by the above method,
Since this is a method of degassing the water in the pipe through the pipe or the curtain, there is a drawback that impurities adhere to the pipe or the curtain and the degassing rate decreases.

[0008]

Therefore, the inventor of the present application has a double kettle structure in order to eliminate the use of activated carbon and the use of hollow fibers and to purify deaerated water with a low running cost. A heating means for heating caustic, a water supply pipe for degassing caustic, a vacuum evacuation pipe provided in addition thereto, and a water discharge pipe, and normal water is once heated to a boiling point near 100 ° C., The degassed water can be easily obtained by going through a vacuuming process at the time of boiling.

[0009]

The present invention is a simple method for removing impurities such as air contained in the water by boiling water such as tap water, then vacuuming the water and applying a negative pressure. A degassing method and an apparatus therefor.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention for degassing will be described with reference to the drawings. FIG. 1 is a schematic view of a deaerator according to the present invention. In the figure, 31 is a heating soda, and a drainage port 47 is provided so as to fill a full state at a level of about 80% of the total volume. There is. In addition, 32 is degassed sodium which can be filled with water to deaerate the water and then can be hermetically closed for evacuation, 33 is a water supply pipe, 34
Is a preheating soda, and 35 is a heater, which is connected to a commercial power source 36 and is energized for a predetermined time. In addition, 37
Is a tap, and 38 is a degassed water discharge pipe, which is connected to a discharge plug 39 or a commonly used food processing machine (not shown).

Reference numeral 40 denotes a vacuum pipe connected to the upper portion of the degassing soda 32, which is connected to a vacuum pump 42 via a water drain trap 41 which drains water by performing predetermined cooling. In the figure, 43 is an exhaust pipe, and 44 is
A motor for driving the vacuum pump 42, which is also connected to a commercial power source. In addition, 46 is the degassing soda 32
And a strainer filter installed between the drain traps 41.

In the apparatus of this embodiment, although the switches, the operation plate and the like are omitted, the heating caustic soda 31 has an internal volume of about 34 (liter), and the degassing soda 32 is An inner volume of about 30 (liter) was used.
This is because the device of this embodiment was produced on the premise that it is mainly used for processing walnut tofu and sesame tofu, and thus the walnut tofu and sesame tofu have an internal volume that can withstand one use of kneading. I did. Further, in the present embodiment, the preheating soda 34 and the heater 35 are provided to heat the tap water or the like, but this may be carried out by directly introducing the tap water into the degassing soda 32, or by using the gas. It is also possible to introduce heated water using other sources as a heating source into the degassing soda 32.

In this embodiment, the heater 35 and the preheating soda 34 provided with the heater 35 are provided, but a heater for heating may be provided so as to be submerged in the degassing soda 32. Is.

Next, a method of actually degassing in the apparatus of this embodiment will be described. In the apparatus of the present embodiment, about 34% is provided between the degassing soda 32 and the heating soda 31.
Fill (liter) of water. In this state,
Water is stored in the preheated soda 34 from the water tap 37, the heater 35 is energized, the stored water is heated to a predetermined temperature, and then introduced into the degassed soda 32. Then valve 49
Is closed and the degassing soda 32 is sealed, and gas heating is performed from the lower side, which is not shown. By this heating, the internal volume is about 3
The water sprinkled with 0 (liter) of degassed soda 32 will start to boil in about 30 minutes, depending on the temperature and the room temperature of the day. When the water boils, the motor 44 is energized, the vacuum pump 42 is driven, and the deaeration soda 32 is evacuated.

In this embodiment, one embodiment in which deaeration is attempted without heating with the heater 35 will be described. First, without heating the heater, water having a water temperature of 15 ° C. is introduced into the degassed soda 32, and the heated soda 31 is gas-combusted for about 30 minutes while the water is kept under boiling to boil the water under tension. Heated up. Regarding the boiling point, it was confirmed that the substance boils at 95 ° C. to 97 ° C. because it is heated in a closed state. After that, when the water that has been flooded boils,
The evacuation was started, and after about 20 minutes, the degassing operation was finished. The water that had been degassed was collected and the dissolved oxygen content was measured and found to be 0.03 PPM or less.

Next, food processing was performed using the degassed water. As food processing products, pastes,
Used for boiled dishes. The method used was exactly the same as the conventional method of using water. As a result, the kneaded product was about 6 times shorter than the conventional kneading time of 90 minutes.
Kneaded in 0 minutes (with a shortening time of approximately 30 minutes). In addition, regarding food products, it was possible to make food products with higher transparency than those using conventional degassing filters. In addition, the texture of this worried product was smoother and better than before.

Furthermore, when the cooked beans and potatoes were cooked using this water, so-called boiling over could be largely prevented in cooking, and the waste of materials could be saved. It was

[0018]

The degassing method according to the present invention can degas water for food processing at a much lower cost than that using a conventional degassing filter using hollow fibers.

Secondly, in the conventional method for producing deaerated water, since the deaeration method is the deaeration from the water in the pipe through the pipe or the curtain, impurities adhere to the pipe or the curtain and the degassing rate decreases. Although the cost was further increased and the running cost was extremely high, the method for producing degassed water according to the present invention makes it possible to obtain degassed water at a significantly lower cost than such conventional methods. You can

Further, even if food is processed by using water obtained by the degassing method according to the present invention, the quality of the obtained food is lower than that obtained by using conventional degassed water. Therefore, it is a good alternative to the conventional degassed water manufacturing method using hollow fibers. In addition, regarding the paste in food processing,
It can be kneaded in a shorter time than before. further,
Regarding food products, it is possible to manufacture a food product that has a higher transparency than that using a conventional degassing filter and has a smooth texture and excellent texture as compared with the conventional products. In addition, with regard to cooked beans and potatoes, so-called boiling over can be largely prevented, quality can be improved, and waste of materials can be saved. Therefore, considering these points, it is possible to obtain degassed water of higher quality than the degassed water purified by the conventional manufacturing method as a whole.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a deaerator according to the present invention.

FIG. 2 is a schematic view of an apparatus for obtaining conventional degassed water for food processing.

[Explanation of symbols]

 1 ... Water tap, 2 ... Supply water inlet, 3 ... Sealing solenoid valve, 4 ... Pressure reducing valve, 5 ... Prefilter, 7 ... Degassing water module, 8. ..Solenoid valve for sealing water, 11 ... Antibacterial fibrous activated carbon, 12 ... Water sealing vacuum pump, 13 ... Degassing water outlet cosmetic valve, 14 ... Treated water outlet, 15.・ Sea water drainage port, 31 ... Heating caustic, 32 ... Degassing caustic, 34 ... Preheating caustic, 35 ... Heater, 36 ... Commercial power source, 39 ... Discharge plug, 41. ..Drainage traps, 42 ... vacuum pumps, 47 ... drainage ports,

Claims (2)

[Claims] 1. A predetermined preheating step for a predetermined amount of water,
The method is characterized in that it comprises a step of pouring the water into a closed container and heating it until it boils in a closed state, and a step of vacuuming the water in the closed container for a predetermined time after the water has boiled. A method for producing deaerated water for food processing. 2. A preheating soda having a heater means connected to a commercial power source, a heating soda to be heated from the outside, and a degassing soda which can be sealed and which is filled with heating water and placed therein. The degassing soda is provided with a water injection pipe for introducing preheated water from the preheating soda and a drainage pipe leading to a food processing machine, while a predetermined strainer filter and a drain trap are provided from the upper part of the degassing soda. An apparatus for producing degassed water for food processing, comprising: an exhaust pipe connected to a vacuum pump provided with.