A device for preparing liquid water below 0 degrees Celsius

Abstract

A device for preparing liquid water below 0 DEG C, comprising a container with an opening and a cover capable of being tightly installed on the opening, the outside of the container is provided with a gas source for filling inert gas into the container and discharging air in the container, the cover is provided with an air inlet pipe and an air outlet pipe, an air inlet valve is installed on the air inlet pipe, an air outlet valve is installed on the air outlet pipe, the gas source is communicated with the air inlet pipe, and the device further comprises a freezing box capable of being cooled to below 0 DEG C, and the container containing water and inert gas is placed in the freezing box in the state of preparing liquid water below 0 DEG C. The external gas source of the device for preparing liquid water below 0 DEG C replaces the air in the container through the air inlet pipe and fills inert gas, when the temperature of water under static state is below 0 DEG C, the partial pressure of water vapor on the free liquid surface is controlled to make the partial pressure between liquid molecules resist the influence of surface tension, so that the water continuously maintains liquid state, and the device has simple structure and low cost.

Description

Technical Field

[0001] This utility model relates to a water treatment device, and more particularly to a device for preparing liquid water below 0°C. Background Technology

[0002] When the static water temperature is below 0℃, existing technologies to maintain its liquid state require either rigorous treatment to deionize the water and remove condensation nuclei (which, while theoretically possible, has extremely limited practical applications and is prohibitively expensive, making it difficult to promote in the civilian sector), or artificial control of the partial pressure of water vapor at the liquid surface, such as continuous vacuuming, to alter the partial pressure and maintain the liquid state. This method requires complex equipment and is similarly limited in its application. While providing vibrational kinetic energy to the water body using energy output devices like ultrasound to increase the energy of individual water molecules can maintain a liquid state, when the liquid volume becomes large enough that the ultrasound cannot fully cover the affected area, the uncovered areas will still freeze. However, if the ultrasound energy is too high and covers the entire liquid, it can easily lead to the generation of numerous bubbles, failing to meet the requirement of consistently maintaining a low-temperature liquid state, resulting in unstable performance and other drawbacks. From an application perspective, for biological products such as vegetables and fruits rich in water, when water solidifies from a liquid state, its volume expands, which can damage cell walls to some extent, leading to the loss of nutrients and spoilage. If preservation in a continuously liquid state can be achieved, the quality of storage can be greatly improved. Therefore, maintaining a liquid state continuously at water temperatures below 0°C has practical value. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a simple and low-cost liquid water preparation device below 0°C, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a liquid water preparation device below 0°C, characterized in that: it includes a container with an opening and a lid that can be sealed on the opening; an air source is provided outside the container; the air source is used to fill the container with inert gas and discharge the air inside the container; an air inlet pipe and an air outlet pipe are installed on the lid; an air inlet valve is installed on the air inlet pipe; an air outlet valve is installed on the air outlet pipe; the air source is connected to the air inlet pipe; and it also includes a freezing box that can cool down to below 0°C; in the liquid water preparation state below 0°C, the container containing water and inert gas is placed in the freezing box.

[0005] Preferably, the air inlet valve and the air outlet valve are located above the lid. This arrangement ensures that the air inlet valve and the air outlet valve are not affected by water inside the container.

[0006] The intake and exhaust pipes can have various installation structures. Preferably, the lower ends of both the intake and exhaust pipes extend downwards beyond the bottom of the cover.

[0007] To ensure more thorough gas replacement within the container, the extension length of the inlet pipe is greater than that of the outlet pipe.

[0008] In order to fill the container with inert gas, the gas source includes a gas source container and a gas source pipe. The gas source container contains inert gas, and the gas source pipe is connected to the air inlet pipe and is located upstream of the air inlet valve along the airflow direction.

[0009] To monitor the water temperature inside the container, a temperature sensor is installed inside the container. When the temperature sensor detects that the water temperature inside the container is higher than 0°C, it indicates that cooling needs to continue. When it detects that the water temperature inside the container is lower than 0°C, it indicates that cooling is complete, and the lid can be opened to take out liquid water below 0°C.

[0010] A water level sensor is installed inside the container to detect the water level. When the water level is detected to be low, water can be added to the container.

[0011] To prevent gas from escaping from the container, a sealing connection structure is provided between the lid and the container opening.

[0012] Compared with the prior art, the advantages of this utility model are as follows: the container lid of the liquid water preparation device below 0℃ is equipped with an air inlet pipe and an air outlet pipe. The air inlet pipe is equipped with an air inlet valve, and the air outlet pipe is equipped with an air outlet valve. An external air source replaces the contents of the container through the air inlet pipe and fills it with inert gas. When the static water temperature is below 0℃, by controlling the partial pressure of water vapor on the free liquid surface, the partial pressure between liquid molecules resists the influence of surface tension, thereby keeping the water in a liquid state. The device has a simple structure and low cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention with the container lid open;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model in the water production state. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 and Figure 2As shown, the liquid water preparation device below 0°C in this embodiment includes a container 1 with an opening and a lid 2 installed on the opening. A sealing connection structure is provided between the lid 2 and the opening of the container 1 to ensure that the lid 2 can be sealed with the container 1 after it is installed. An air inlet pipe 4 and an air outlet pipe 5 are installed on the lid 2. The lower ends of both the air inlet pipe 4 and the air outlet pipe 5 extend downwards from the bottom of the lid 2, and the extension length of the air inlet pipe 4 is greater than the extension length of the air outlet pipe 5. An air inlet valve 6 is installed on the air inlet pipe 4, and an air outlet valve 7 is installed on the air outlet pipe 5. The air inlet valve 6 and the air outlet valve 7 are located above the lid 2.

[0017] An air source 3 is provided outside the container 1. The air source 3 is used to fill the container 1 with inert gas and discharge the air inside the container 1. Specifically, the air source 3 includes an air source container 31 and an air source pipe 32. The air source container 31 contains inert gas, and the air source pipe 32 is connected to the air inlet pipe 4 and is located upstream of the air inlet valve 6 along the airflow direction.

[0018] A temperature sensor (not shown in the figure) for detecting water temperature and a water level sensor (not shown in the figure) for detecting water level are installed inside container 1.

[0019] The device also includes a freezer 8 that can cool down to below 0°C. A container 1 containing water and inert gas is placed in the freezer 8 in a liquid water preparation state below 0°C.

[0020] The working process and principle of this device are as follows:

[0021] First, connect the gas source 3 to the inlet pipe 4, open the lid 2, and fill the container 1 with water 9. The water 9 maintains a free liquid surface under gravity, leaving a certain space above the surface. Then, close the lid 2, at which point both the inlet valve 6 and the outlet valve 7 are closed. Next, open the inlet valve 6 and the outlet valve 7. Inert gases such as nitrogen, argon, and helium inside the gas source container 31 enter the container 1 through the inlet pipe. These inert gases are insoluble or sparingly soluble in water, thus displacing the air above the liquid surface inside the container 1. The displaced air is discharged through the outlet valve 7, thereby reducing the partial pressure of water vapor on the free liquid surface. Finally, place the container containing water and inert gas into a freezer 8 below 0°C for cooling. When the partial pressure of water vapor on the free liquid surface of the static water remains low, the water can remain liquid even when the water temperature is consistently below 0°C, such as -10°C or -15°C. When water is needed, open the lid to obtain liquid water below 0°C.

Claims

1. A device for preparing liquid water below 0°C, characterized in that: The container (1) includes an open container and a lid (2) that can be sealed on the open container (1). An air source (3) is provided outside the container (1) for filling the container (1) with inert gas and venting the air inside the container (1). An air inlet pipe (4) and an air outlet pipe (5) are installed on the lid (2). An air inlet valve (6) is installed on the air inlet pipe (4) and an air outlet valve (7) is installed on the air outlet pipe (5). The air source (3) is connected to the air inlet pipe (4). The container (1) is also equipped with a freezer (8) that can cool down to below 0°C. The container (1) containing water and inert gas is placed in the freezer (8) in a liquid water preparation state below 0°C.

2. The apparatus for preparing liquid water below 0°C according to claim 1, characterized in that: The air inlet valve (6) and air outlet valve (7) are located above the cover (2).

3. The apparatus for preparing liquid water below 0°C according to claim 1, characterized in that: The lower ends of the air inlet pipe (4) and the air outlet pipe (5) extend downwards to the bottom of the cover (2).

4. The apparatus for preparing liquid water below 0°C according to claim 3, characterized in that: The extension length of the air inlet pipe (4) is greater than the extension length of the air outlet pipe (5).

5. The apparatus for preparing liquid water below 0°C according to claim 1, characterized in that: The gas source (3) includes a gas source container (31) and a gas source pipe (32). The gas source container (31) contains inert gas. The gas source pipe (32) is connected to the air inlet pipe (4) and is located upstream of the air inlet valve (6) along the airflow direction.

6. The apparatus for preparing liquid water below 0°C according to claim 1, characterized in that: A temperature sensor for detecting water temperature is installed inside the container (1).

7. The apparatus for preparing liquid water below 0°C according to claim 1, characterized in that: A water level sensor for detecting water level is installed inside the container (1).

8. The apparatus for preparing liquid water below 0°C according to any one of claims 1 to 7, characterized in that: A sealing connection structure is provided between the lid (2) and the opening of the container (1).

Images