JPS59211446A - Thermostatic apparatus for artificial fertilization - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention (C) relates to a constant temperature device for artificial insemination that thaws frozen sperm and keeps it at a temperature that allows conception during artificial insemination in the livestock industry〇 Conventional example Composition and its problems In recent years, artificial insemination using frozen sperm has become more common in the livestock industry.
In order to restore frozen sperm to a fertile temperature, a method is used in which a pellet of squeezed sperm is placed in a nutrient solution at a constant temperature and volume.

In this method, the following method was used to obtain a nutrient solution at a constant temperature and constant volume. That is, a specified nutrient solution is placed in a glass beaker, the beaker is placed in an insulated container, hot water is gradually poured into the container, and the temperature inside the beaker is raised in a hot water bath. A thermometer inserted into the beaker is used to visually confirm that the predetermined temperature has been reached.

However, the above method involves unstable elements such as visual temperature confirmation and hot water injection, and is also accompanied by complicated work. OBJECTS OF THE INVENTION The present invention addresses the above-mentioned drawbacks of the conventional technology, and provides a method for automatically supplying a nutrient solution to thaw frozen sperm, raise it to a fertile temperature, and keep it warm when performing artificial insemination. Structure of the Invention In order to achieve the above object, the constant temperature device for human fertilization of the present invention includes a 1.1 degree control device for the electric heating element and the temperature detection device. The main body includes a main body, and an outer lid that can be opened and closed at the main body opening.Furthermore, the main body includes a plurality of small containers and a holder for separating and holding the containers. It is designed to automatically supply a fixed amount of nutrient solution at a fixed temperature.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a bottomed cylindrical outer frame of the main body, and 2 is a heat insulating material 3, 4 such as glass wool on the outer frame 1 of the main body.
A bottomed cylindrical inner container 5 housed through the main body outer frame 1 covers the upper opening of the main body outer frame 1 with an outer lid rotatably attached to the main body outer frame 1 so as to be openable and closable. Reference numeral 6 denotes an inner cover made of an aluminum plate fixed to the inner surface of the outer cover 5, which covers the upper opening of the inner container 2 in the same way as the outer cover 5.

7 is an electric heating element wrapped around the upper outer wall of the inner container 2; 8 is an electric heating element arranged so as to surround the temperature detection device 9 attached to the center of the outer bottom surface of the inner container 2; A support frame provided on the inner bottom supports the temperature control device 12 via an insulating plate 11. Reference numeral 13 denotes a holder disposed inside the inner container 2, and a top plate having a plurality of holes 14 is attached to the upper part. 15 is a small glass container held by the hole 14 of the holder 13, and 16 is a nutrient solution stored in this small container 15. Further, 17 is a handle provided on two sides of the outer lid, 18 is a leg attached to the bottom of the outer frame 1 of the main body, and 19 is a neon lamp for indicating energization.

Figure 3 is an electrical circuit diagram of the thermostatic device for artificial fertilization according to the example.
21 is a power supply, 22 (temperature and fuse connected in series to this power supply, 23 is a directional three-terminal sirisk that controls the current flow of electric heating element Y and 8 connected in parallel, 24
(is the resistance connected to the on-lamp 19, 25.26.
27 are resistors and rectifier diodes connected in series,
The smoothing capacitor converts the AC voltage of the power supply 21 into value current voltage.

A temperature detecting device 9 consisting of resistors 28, 29, 30 and a negative characteristic thermistor constitutes a bridge circuit for the DC voltage, the output of which is connected to a voltage comparator 31. 32 is a PNP transistor directly connected to the power supply 21 via a resistor 33; 34 is an NPN transistor directly connected to the power supply 21 via resistors 35 and 36; 37;
．． 38 is a base resistor, and together with the resistor 36, the transistor 3
2 and 34 operating points are determined. 39 is a diode that prevents a reverse voltage from being applied to the base of the transistor 32, and 40 and 41 are resistors that supply base current to the N P NW ) transistor 42; The connection point P is connected to the output terminal of the voltage comparator 31. The collector terminal of the transistor 42 is connected to the gate terminal of the bidirectional three-terminal zyristor 23 via a resistor 43, and the collector terminal of the transistor 34 is connected to the connection point P by 1 and 1.

The operation of the non-embodiment thermostatic device for artificial fertilization constructed as described above will be described below.

A nutrient solution is poured into a small container 15 and placed at the bottom of the inner container 2 using a retainer 13. Next, the outer lid 5 is closed and the constant temperature device for artificial fertilization of wood is energized. Then, the neon lamp 19 lights up, the smoothing capacitor 27 is charged via the resistor 25 and the rectifier diode 26, and the DC power supply of the temperature control device @12 is turned on.
4fru.

In the temperature control device 12, when the temperature inside the inner container 2 is low and the resistance of the negative characteristic thermistor is high, that is, immediately after energization, the output of the voltage comparator 31 becomes a high level. The trench transistors 32 and 34 are the resistors 33 as mentioned above.
, 35 directly to the power supply 21, it turns on only when base current flows through these resistors 33, 35. Therefore, the transistor 34 is turned off only near the zero point of the power supply voltage, and is normally turned on. Therefore, since the connection point P is at a low temperature and reaches a high level only near the zero point of the power supply 'llL voltage, turning on the transistor capacitor 2, the bidirectional three-terminal XIRISK 23 is connected to 1, no, r, l-, ij1.
IL Electricity A1 - energize the heating elements 7 and 8.

In this way, the electric heating elements 7 and 8 are energized and the inner container 2 is heated. The two-part opening of the inner container 2 is closed by the inner lid 6 to form a closed space, which is effective due to the heat r1 added by the air heating elements 2 and 8 and the heat insulation 3.4. Then, increase W'+7 in this closed space.

Next, when the control j temperature, that is, the temperature determined by the resistance values of the resistors 28, 29, and 30 and the temperature characteristics of the negative characteristic thermesque, is reached, the output of the voltage comparator 31 (bow) becomes a low level, so the connection point P becomes low. level and transistor 4
2 does not turn on. Therefore, bidirectional three-terminal Cyrisk 23
is no longer conductive, and the fd current is not applied to the electric heating elements 7 and 8, so they do not generate heat.

In this way, the temperature of the inner container 2 is detected by the temperature detection device 9 consisting of a negative characteristic thermistor, and the temperature is '1Ill.
The temperature inside the inner container 2 is kept constant by the ml device 12.
can come. Therefore, the nutrient solution 16 contained in the inner container 2 is maintained at that temperature after rising to a predetermined grade of seven.

As described above, it is possible to obtain a nutrient solution with a constant temperature and a constant volume necessary to thaw frozen sperm, and when a pellet of frozen sperm is placed in this nutrient solution, the sperm are restored to a state capable of fertilizing. can be done.

As mentioned above, since the valley container 15 is made of glass, it is hygienic because it is hard to get scratched, and since it is held separately by the holder 13, it is hard to break.

Note that the present invention is not limited to the above embodiments,
It can be modified and implemented as appropriate within its scope.

As described above, the present invention provides an electric heating element, a temperature detection device,
It consists of a main body equipped with a temperature control device, an openable and closable outer lid provided at the opening of the main body, a plurality of small containers stored inside the main body, and a holder that separates and holds the small tea utensils. A certain amount of nutrient solution for thawing frozen sperm is stored in a small container inside the main body, and after a certain period of time has elapsed after the power is turned on, the nutrient solution can be heated to a certain temperature and maintained at that temperature.

Therefore, if a pellet of frozen sperm is subsequently placed in a small container, the sperm can be easily recovered to a temperature capable of fertilizing the sperm.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a constant temperature device for artificial fertilization according to an embodiment of the present invention, FIG. 2 is a perspective view of a holder in the same embodiment, and FIG. 3 is an electric circuit diagram in the same embodiment. 1... Main body outer frame (main body), 5... Outer lid, 7
, 8...Electric heating element, 9...Temperature detection device, 12...7 Crystallinity control device, 13...Holder, 16...Small container .

Claims (1)

[Claims] A main body equipped with an electric heating element, a temperature detection device, and a temperature control device, an outer lid that can be opened and closed provided at the opening of the main body, and a plurality of small containers stored inside the main body, and the small containers are held separately. A constant temperature device for artificial fertilization having a holder.