JP3037641U - Pipette nozzle with heater - Google Patents

Abstract

(57) [Summary] (Correction) [Problem] Revised the work procedure to subdivide the specimen blood heated elsewhere and transfer it to this testing device, and keep the pipette and its specimen blood warm to the desired temperature. While moving to the inspection equipment. SOLUTION: The surface of the body portion of the pipette nozzle is coated with a heat resistant electric insulating material 9, and the tip end of the stepped portion is provided with electric heating members 10, 10a at the folded portion where the vial coil is wound. The linear heating temperature control element 11 is provided in series, and the element portion is placed on the stepped portion on the tip end of the body portion of the pipette nozzle.
The heat-shrinkable and electrically-insulating heat-shrinkable synthetic resin 9a is fixed to the body portion of the above, and they are assembled and configured to form a pipette nozzle with a heater.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a pipette nozzle with a heater, which belongs to the technical field of physical and chemical inspection instruments.

[0002]

[Prior art]

 One of the methods for conducting analytical tests of chemical substances that are dissolved in liquids such as water is to heat the sample solution to the desired temperature. In particular, when conducting inspection analysis, it is divided into test tubes, beakers, small plates, etc., and it is heated with an alcohol lamp, small electric stove, small electric furnace, small high-frequency heating device, etc. to perform inspection analysis. Was there. In these cases, depending on the means for moving the heated sample solution to the next inspection device, the temperature may drop immediately before the inspection and analysis while maintaining the predetermined temperature, which may cause inconvenience. there were.

[0003]

[Problems to be solved by the device]

 As described above, if the sample solution that had been warmed up before the start of the test analysis fell without being able to maintain its temperature, there was a risk that correct test analysis could not be performed. The ability to maintain the desired temperature in the process was an issue to be solved by the present invention.

[0004]

[Means for Solving the Problems]

 Persons who perform a test analysis by subdividing the sample solution heated in another place and transferring it to this testing device by changing the work procedure so that the pipette and its sample solution are heated to the desired temperature and transferred to the testing device. Since it is good, it is a means to heat the liquid to be inspected, which is wrapped in an electric heating device in the body part of the pipette nozzle in the shape of a pre-throttle, to heat it to the desired temperature necessary for the inspection, Solve the above-mentioned fear that correct inspection and analysis cannot be performed.

[0005]

【Example】

 FIG. 1 is a schematic diagram of the previous embodiment. The pipette 1 sucks the heated blood 3n in the test tube 2n and drops it on the slide glass 4a of the inspection and analysis device 4. The heating device 5 for heating the blood 3n incorporates an electric heater 6 to heat the water 7 to a desired temperature to heat the blood 3n in the test tube 2n to the desired temperature. The blood 3n dropped on the slide glass 4a of the inspection / analysis device 4 is irradiated with the inspection / analysis light source 4b and internally analyzed via the light receiver 4c. The result is displayed on the display 4d of the inspection / analysis device 4. Be done. E is a power supply to each device.

FIG. 2 is a schematic configuration diagram of an embodiment of the present invention. An electric resistance heating element 10, 10a wound with a vial coil is provided on the surface of the body of the pipette 8 in the shape of a tapered tip, which is made of a ceramic material 9 that is an electrical insulating material. A non-linear heating temperature control element 11 is provided in series between the electric resistance heating elements 10 and 10a, and the pipette nozzle heater 12 is fixed with a heat-shrinkable and electrically insulating heat-shrinkable synthetic resin 9a. Are configured.

FIG. 3 is an electric resistance circuit diagram of the heater pipette nozzle 12 which is the pipette of FIG. A nonlinear heating temperature control element 11 is connected in series between the gas resistance heating wires 10 and 10a so that the nonlinear heating temperature control element 11 is mounted on the tip portion 8a of the pipette nozzle.

FIG. 4 is a schematic diagram of an embodiment of the present invention. The pipette 8 is heated by the nozzle heater 12 for pipette. When the blood 3n sucked into the pipette 8 from the inside of the test tube 2n is heated by the nozzle heater 12 for the pipette and reaches the desired temperature, the non-linear heat generation temperature control element 11 rapidly increases the electric resistance value. By suppressing the amount of electricity supplied and reducing the amount of heat generation, it is possible to drop the blood 3n sucked onto the slide glass 4a of the inspection / analysis device 4 while keeping the temperature of the blood 3n not raised. The dropped blood 3 n is irradiated with the test analysis light source 4 b, and is internally analyzed through the light receiver 4 c. The result is displayed on the display 4 d of the test analysis device 4. A large number of pipettes 8 equipped with pipette nozzle heaters 12 are provided on the turntable 8n, 12n in succession (not shown) to supply test blood 3n to the test analyzer 4 for test analysis. You can increase efficiency. E is a power supply to each device.

[0009]

[Effect of the invention]

 As described above, the pipette nozzle heaters 12 and 12n are provided on the pipettes 8 and 8n so that the test analysis of the blood 3n can be continuously performed at a constant temperature. In order to maintain the constant temperature, the non-linear heat generation temperature control element 11 is placed on the stepped step portion 8a of the nozzle of the pipette 8, and temperature control can be obtained very stably.

[0010]

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a conventional embodiment.

FIG. 2 is a configuration diagram in which a pipette nozzle heater 12 is provided on a pipette 8 of an embodiment of the present invention.

FIG. 3 is an electrical resistance circuit diagram of a pipette nozzle heater 12.

FIG. 4 is a schematic view of an embodiment of the present invention.

[Explanation of reference numerals] 1 pipette 2, 2n test tube 3, 3n blood 4 inspection / analysis device 4a slide glass 4b light source for inspection / analysis 4c light receiver 4d display 5 heating device for heating blood 3n 6 electric heater 7 water 8, 8n Blood 9 Ceramic material that is an electrically insulating material 9a Heat-shrinkable and electrically insulating heat-shrinkable synthetic resin 10, 10a Electric resistance heating element 11 Non-linear heating temperature control element 12 Pipette nozzle heater E Power supply to each device

Claims (1)

[Utility model registration claims] 1. A pipette nozzle is provided with a two-step-shaped portion in which a tip of a body portion is pre-drawn, and a heat-resistant electric insulating material is coated on the surface of the body portion to obtain the above-mentioned electric insulating material coating. An electric heating member is provided on the surface around the vial coil, and the heating member is integrally provided by providing a non-linear heating temperature control element in series at a portion located at the tip end step of the body portion of the pipette nozzle. A pipette nozzle with a heater, characterized in that the pipette nozzle is structured and fixed to a body portion of the pipette with a heat-shrinkable and electrically insulating heat-shrinkable synthetic resin, and is assembled and configured.