JPH04222624A - Apparatus for making carbonated water - Google Patents

Abstract

PURPOSE:To efficiently perform the absorption of carbon dioxide into water by vertically providing a circulating pipe in a pressure-resistant container having the carbon dioxide inflow port positioned above one direct jet nozzle or a plurality of direct jet nozzles provided to the upper part thereof so as to position the same under the surface of the water in said container. CONSTITUTION:Carbon dioxide is introduced into a carbonator 1 and drinking water is introduced into the carbonator 1 from a direct jet nozzle 2. The carbonated water within the carbonator 1 is circulated for a predetermined time between a carbonated water outflow port 4 and a drinking water inflow port 3. The carbonated water recirculated from the direct jet nozzle 2 to the carbonator 1 enters a circulating pipe 6 and flows downwardly while it involves the water outside the circulating pipe 6 and this circulation is repeated to raise the concn. of carbon dioxide. By this method, the high concn. carbonated water blown in water along with the jet stream of carbonated water can be well mixed with low concn. carbonated water and, therefore, carbon dioxide can be efficiently dissolved in water.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing carbonated water.

0002

2. Description of the Related Art Conventionally, carbonated water production apparatuses have used a method of blowing gas into water (for example, Japanese Patent Publication No. 52-47031, Utility Model Application No. 53-101095,
Utility Model Application Publication No. 56-66285) or a method of blowing water into carbon dioxide gas (for example, a method of injecting water from a nozzle into carbon dioxide gas in a carbonator (Utility Model Application Publication No. 49-4494)
8, Utility Model Publication No. 62-32586) and a method of spraying water (Utility Model Publication No. 59-12996).

[0003] The former method of blowing water into carbon dioxide gas has the advantage of being compact and durable because the device is simple, but because the contact time of carbon dioxide gas with water is short, high concentrations Difficult to obtain carbonated water. In order to obtain highly concentrated carbonated water, it is necessary to increase the carbon dioxide pressure and leave it for a long time, but due to the dangers associated with high pressure, the cost is high, and it is necessary to leave it for a long time. The drawback was that carbonated water could not be provided immediately.

On the other hand, the latter method of blowing gas into water has the advantage of being able to obtain highly concentrated carbonated water in a short time, but it is difficult to spray or inject water into a pressurized carbonator. The equipment becomes complicated because a pump and nozzle are required. In particular, in order to obtain highly concentrated carbonated water, it is necessary to spray with a smaller diameter or to blow carbon dioxide gas deep into the water together with the water jetted from the nozzle, which requires a high-output pump and the equipment becomes larger. There was a drawback.

[0005]

[Problems to be Solved by the Invention] The present invention was proposed in order to solve the above-mentioned drawbacks, and the purpose is to provide a compact carbonated water production device that can produce highly concentrated carbonated water in a short time. The purpose is to efficiently absorb carbon dioxide gas into water.

[0006]

[Means for Solving the Problems] The carbonated water production device of the present invention includes one or more direct injection nozzles provided in the upper part,
and a carbonated water production device comprising the direct injection nozzle, and a pressure container having a carbon dioxide gas inlet located above the lower end of the direct injection nozzle and a carbonated water outlet located at the bottom, into the pressure container from above. It is characterized by a circulation pipe that penetrates downward and is submerged below the water surface.

[0007]

[Function] By configuring the present invention as described above, the high concentration carbonated water blown into the water with the jet stream can be mixed well with the low concentration carbonated water, so that the carbonated water can be mixed with the low concentration carbonated water. can be efficiently dissolved.

The reason for the above is as follows. The dissolution of carbon dioxide into water is related to the following gas-liquid dissolution equation.

N=KL×ΔC l/KL = l/HkG +1/βkL ΔC: Concentration difference (kg-mol/m3) H: Henry's constant (atm・
m3/kg-mol) KL: Overall mass transfer coefficient based on liquid phase (m/hr) kG: Gas phase mass transfer coefficient (kg-mol)
mol/m2 ・hr・atm) kL: Liquid phase mass transfer coefficient (m/hr) N: Absorption rate per unit contact of gas and liquid (kg-mol/m2 ・hr) β: Reaction constant Carbon dioxide absorption rate Q (kg-mol/hr) is N multiplied by the gas-liquid contact area S (m2). Therefore, in order to achieve the above objective, it is necessary to increase KL and S.

[0010] In the method of blowing gas into water, if means such as stirring are not used, KL and S become small, making it difficult to obtain highly concentrated carbonated water in a short time.

[0011] Therefore, it is necessary to adopt a method of blowing water into carbon dioxide gas which can increase KL and S.

[0012] Furthermore, there are two methods of blowing water into carbon dioxide gas: a spray method and an injection method, but the spray method requires a space for spraying and therefore requires a large device. Therefore,
In order to create a compact carbonated water production device, it is necessary to efficiently dissolve carbon dioxide gas into water using an injection method so that highly concentrated carbonated water can be obtained in a short time even with a small pump.

[0013] Here, by increasing ΔC, that is, by making sure that the water in the tank that comes into contact with the carbon dioxide gas blown into the water with the jet is successfully updated to water with a lower concentration, it becomes carbonated water. can be efficiently dissolved.

[0014]

[Example] Next, an example of the present invention will be described. still,
The embodiments are merely illustrative, and it goes without saying that various changes and improvements can be made without departing from the spirit of the invention.

First, the structure of the carbonated water production apparatus of the present invention will be explained with reference to FIG. The carbonated water production device is composed of a carbonator 1, a pump 7, a carbon dioxide gas cylinder 11, and piping members such as electromagnetic valves 8, 9, and 10.

[0016] The carbonator 1 is installed vertically, and inside the carbonator 1 there is a direct injection nozzle 2 facing vertically downward at the top and a vertically downward direct injection nozzle 2 at the center of the carbonator 1, with openings at both ends at a position submerged in water. A circulation pipe 6 made of a straight hollow cylinder is provided.

The carbonator 1 also has a drinking water inlet 3 at the top for taking drinking water into the direct injection nozzle 2, a carbonated water outlet 4 at the bottom, and a carbonated water outlet 4 located above the lower end of the direct injection nozzle 2. A gas inlet 5 is provided, the drinking water inlet 3 is connected to the pump 7, the carbonated water outlet 4 is branched, and one side is connected to a faucet (not shown) via a solenoid valve 9, and the other side is connected to a circulation pipe through a pipe. A carbon dioxide gas supply port 5 is connected to a three-way solenoid valve 10 through a solenoid valve 8 and a pressure reducer 12 to a carbon dioxide gas cylinder 1.
1, respectively.

Furthermore, by connecting the three-way solenoid valve 10 to the drinking water supply section, the pump 7, and the carbonated water outlet 4, piping is provided so that drinking water can be taken in and carbonated water can be circulated to the carbonator. .

Next, a method for producing carbonated water will be explained. Carbon dioxide gas brought to a predetermined pressure by a pressure reducer 12 is introduced into the pressurized carbonator 1, and drinking water is introduced into the carbonator 1 through the direct injection nozzle 2 by switching the solenoid valve 10.

When a predetermined amount of drinking water enters the carbonator 1, the solenoid valve 10 is switched to release the carbonator 1.
between the carbonated water outlet 4 and the drinking water inlet 3,
It circulates for a predetermined period of time. Direct injection nozzle 2 to carbonator 1
The carbonated water that is recirculated inside enters the circulation pipe 6, draws in water outside the circulation pipe 6, flows downward, and repeats this process to increase the concentration.

[0021] In this way, water with a high concentration of carbon dioxide coming out of the direct injection nozzle 2 is mixed with water with a low concentration of carbon dioxide. This improves the mixing ratio of carbonic acid.

The produced carbonated water is supplied from the faucet using the gas pressure in the carbonator 1 by opening the solenoid valve 9.

[0023]

Effects of the Invention According to the present invention, the water in the high concentration of carbon dioxide that is blown into the water with the jet stream can be mixed well with the low concentration carbonated water, thereby reducing the dissolution of carbon dioxide gas into the water. It can be done efficiently. This has the effect of providing a compact carbonated water production device that can produce highly concentrated carbonated water in a short time.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of a carbonated water production apparatus of the present invention.

[Explanation of sign]

1 Carbonator 2 Direct injection nozzle 3　Drinking water inlet 4 Carbonated water outlet 5　Carbon dioxide gas inlet 6 Circulation pipe 7 Pump 8 Solenoid valve 9 Solenoid valve 10 Solenoid valve 11 Carbon dioxide cylinder 12　Pressure reducer

Claims (1)

[Claims] 1. From a pressure vessel having one or more direct injection nozzles provided at the top, a carbon dioxide gas inlet located above the lower end of the direct injection nozzle, and a carbonated water outlet located at the bottom. 1. A carbonated water producing apparatus characterized in that a circulation pipe penetrating from above to below inside the pressure-resistant container is provided so as to be submerged below the water surface.