JPS5940403Y2 - Portable freezing device for fertilized eggs, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a portable simple freezing device for freezing and preserving fertilized eggs, sperm, etc.

The above-mentioned conventional freezing equipment is constructed by integrating a specially made low-temperature constant temperature chamber and a freezing device for temperature control, etc., so the entire equipment is quite large and can be easily moved. For this reason, fertilized eggs, sperm, etc. collected on-site are transported to a specific location 1 where the above-mentioned freezing device is installed, and then placed in the same device and frozen. However, there was a problem that the rate of death of sperm etc. during transportation was high and the yield was low.

Therefore, the present invention is a new portable and simple freezing device for fertilized eggs etc. as a result of studies in view of the above-mentioned conventional circumstances.
The objective is to have a suitably constructed structure that is easily portable and can be connected to a low-temperature liquefied gas container that is readily available on site, so that the fertilized eggs, etc. thus collected can be immediately frozen. The aim is to minimize the death of sperm, etc. by making it possible to do so.

The present invention will be described in detail below based on the drawings. As shown in FIG. In addition to being placed and fixed, an outer tank 5 made of a bottomed cylindrical body 4 having a diameter larger than that of the cylindrical body 1 is fitted on the outer circumferential side of the cylinder body 1 in a concentric manner, and both tanks 2°5 are integrated, and can be inserted into and removed from a separately prepared low-temperature liquefied gas container 6.
It is configured to close the opening 7 of the container 6 and to be freely attachable.

The inner tank 2 includes a straw-front stand 8 and a stirrer 9.
, a thermometer 10, a heater 11, and other necessary members are housed inside, as well as a refrigerant such as fluorocarbon.

On the other hand, a heat exchange medium G such as helium is sealed in the outer tank 5, and the sealing means is to press a button at the opening of the cylindrical body 4 and connect the cylindrical body 4 and the cylindrical body 1 of the inner tank 2. An injection tube 13 is attached in advance to the support stopper 12 that fixes the injection tube 13, and after helium or the like is injected from the injection tube 13, it is sealed off or pulp (not shown) is attached to the injection tube 13. It is preferable to close the valve after injection to seal.

Further, in the lid 3, a low temperature liquefied gas supply port 14 and a vaporized gas discharge port 15 for supplying liquid nitrogen etc. are communicated with the inside of the low temperature liquefied gas container 6 through a pipe 14a15a fixed through the lid 3. When the freezing device A is attached to the container 6 as shown in the figure, or when LN2, etc. is consumed during use, LN2, etc. can be poured into the container 6 from the supply port 14. Supply or replenish the LN2
Further, the lid 3 is provided with an opening 16 for attaching and detaching the straw front stand 8. In part 16,
An opening/closing lid 3a is provided to ensure the closed state.

In the illustrated example, the lid 3 is removably fixed to the opening edge of the low-temperature liquefied gas container 6 by bolts 11 or the like.

Moreover, the straw front stand 8 is, as shown in FIG.
A guide and handle 8b is installed upright on a horseshoe-shaped straw tube holder 8a, and a straw fracture 8c is fitted into the upright portion of the handle 8b so as to be able to slide up and down.
After the straw tube a is placed vertically in the recessed hole 8d provided on the top surface, a plurality of straw tubes a can be placed vertically by pressing the upper end of the straw tube a with the presser foot 8c. Moreover, by making the pedestal 8a and the presser foot 8c into a horseshoe shape, the stirrer 9 and the like do not get in the way when the container is taken in and out of the narrow inner tank 2.

The agitator 9 is constructed by inserting a rotary shaft (not shown) into a bearing tube 9a hanging from a support base 18 fixed to the lid 3, and attaching stirring blades 9b to the protruding end of the rotating shaft. It is formed to be driven and rotated by a motor M placed on the body 3 via a speed reducer 19.

To freeze the sperm, etc., the cold heat from LN2 or the like is transferred to the refrigerant via the heat exchange medium G, such as helium, and the agitator 9, thermometer 10, heater 11, etc. are used to freeze the sperm, etc. as is known. If you set the temperature of the refrigerant to the required conditions, it will work.

As described above, the present invention includes a lid 3 on the upper edge of the inner tank 2 formed to be able to store a refrigerant such as fluorocarbon, and an outer shell 3 sealed with a heat exchange medium G such as helium on the outer periphery of the inner tank 2. A tank 5 is provided, and a straw front stand 8 is installed in the refrigerant tank of the inner tank 2 so that it can be moved in and out, and necessary components such as an agitator 9, a heater 11, and a thermometer 10 are installed inside the refrigerant tank. The body 3 can be detachably connected to the low-temperature liquefied gas container 6, and the low-temperature liquefied gas supply port 14 and vaporized gas discharge port 15 that open into the container 6 are provided in the lid 3. The inner tank 2 in which the straw tube a is housed together with the refrigerant and the outer tank 5 in which the heat exchange medium G is sealed are integrated, and are much smaller than the low-temperature liquefied gas container 6. Because it can be used as However, since it can be used by attaching it to a liquid nitrogen gas container 6 that can be installed in advance, the mortality rate of fertilized eggs etc. can be extremely lowered compared to the conventional example, and a real improvement can be achieved.

In addition, the device can be easily manufactured with a very small number of components, with the main parts being the cylindrical bodies 1 and 4 of different diameters and the lid 3, and since the inner tank 2 can be small, the motor M of the stirrer 9 can be easily manufactured.
It is also possible to provide small, lightweight, and inexpensive products.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing the freezing device according to the present invention in use, and FIG. 2 is a perspective view illustrating the straw front stand of the device. 2... Inner tank, 3... Lid body, 5... Outer tank, 6...
Low-temperature liquefied gas container, stand in front of straw, 8a...
- Horseshoe-shaped straw tube holder, 8b... Guide and handle, 8c... Horseshoe-shaped straw fracture, 9... Stirrer, 10... Thermometer, 11... Converter , 14...
Low temperature liquefied gas supply port, 15... vaporized gas discharge port.

Claims (1)

[Scope of utility model registration request] (1) A lid is provided on the upper edge of an inner tank formed to be able to store a refrigerant such as fluorocarbon, and an outer tank filled with a heat exchange medium such as helium is integrally provided on the outer periphery of the inner tank. A straw-front stand is enclosed in the refrigerant in the inner tank so that it can be moved in and out, and necessary components such as an agitator, a heater, and a thermometer are also enclosed, and the lid body can be detachably attached to the low-temperature liquefied gas container. year,
A portable freezing device for fertilized eggs, etc., which is provided with a low-temperature liquefied gas supply port and a vaporized gas discharge port that open into the low-temperature liquefied gas container in the same lid. (21 The straw front stand is formed by attaching a horseshoe-shaped straw tube holder and a horseshoe-shaped straw front holder to a guide/handle erected from the holder so that it can slide vertically. A portable freezing device for fertilized eggs, etc., as set forth in claim 1, which has been registered as a utility model.