JPS6241215Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a fluid flow rate/temperature detector that can simultaneously detect the fluid flow rate and the fluid temperature, and in particular, the present invention relates to a fluid flow rate/temperature detector that can simultaneously detect the fluid flow rate and the fluid temperature. , and a thermistor.

Hereinafter, an example of the fluid flow rate/temperature detector according to the present invention will be described with reference to the drawings.

The figure shows an example of a fluid flow rate/temperature detector according to the present invention, which has a fluid conducting pipe 3 having a fluid inlet 1 and a fluid outlet 2.

The fluid-conducting pipe 3 has therein a partition plate 6 which divides the fluid-conducting pipe 3 into a pipe section 4 on the fluid inlet 1 side and a pipe section 5 on the fluid outlet 2 side.

The partition plate 6 includes a plate portion 7 extending in the direction of extension of the fluid-conducting tube body 3 so as to face the inner surface of the tube portion 5, and a plate portion 7 that allows the tube portions 4 and 5 to communicate with each other. It has a fluid guide hole 8 provided in.

Moreover, on the inner surface of the pipe portion 4 of the fluid communication pipe body 3,
At a position facing the fluid guide hole 8 mentioned above,
A concave receiving portion 9 is provided to receive a free end of a cylindrical body 12, which will be described later.

Further, a cylindrical body 12 is provided in the fluid-conducting tube 3 and extends into the tube portions 4 and 5 through the fluid guide hole 8.
is installed.

This cylindrical body 12 has a sufficiently smaller size than the fluid guide hole 8 and has a cylindrical portion 13 with one end closed.
and from the cylindrical part 13, integrally with this, the cylindrical part 13
It has a cylindrical part 14 which extends on the side opposite to the closed end side and has a larger size than the cylindrical part 13.

On the other hand, the cylindrical body 12 has a configuration in which magnetic leads 21 and 22 are introduced into an elongated sealed tube 20 from outside both ends thereof. A reed switch 10, which is known per se, and a thermistor 11, which is also known per se, are connected to a resin material 2 that is electrically insulating and thermally conductive.
It is buried and arranged in 3.

In this case, the reed switch 10 extends the sealing tube 20 in the direction along the axis of the cylindrical body 12, and positions the sealing tube 20 at a position straddling the inside of the cylindrical portion 13 and the inside of the cylindrical portion 14. The thermistor is disposed within the cylindrical body 12, and the thermistor is disposed within the cylindrical portion 13.

Further, from a position facing the fluid guide hole 8 of the partition plate 6 described above from the side opposite to the concave receiving portion 9 side, the fluid conduction tube 3 is provided with A cylindrical body 30 communicating with the fluid-conducting pipe body 3 is provided integrally with the fluid-conducting pipe body 3.

A screw 31 is attached to the outer periphery of this cylindrical body 30 on the side opposite to the fluid-conducting tube 3 side.

Further, the above-mentioned cylinder 12 has a crown body 33 integrally formed with the cylinder body 12 on its free end side on the side of the cylinder part 14 and having a screw 32 on the inner circumferential surface thereof.
2 are installed concentrically.

Thus, the crown body 33 is attached to the cylinder body 30.
By screwing the screws 31 of the cylindrical body 12 with the screws 31 of the cylindrical body 30 in a removable manner, the cylindrical body 12 allows its cylindrical portion 13 to be inserted into the fluid guide hole 8 of the partition plate 6. The free end of the cylindrical portion 13 is received in the concave receiving portion 9, and is attached to the fluid-conducting tube 3.

Further, around the cylinder body 12, on the tube part 5 side,
An annular permanent magnet body 34 that is movable while being guided by the cylindrical part 13 of the cylindrical body 12 in its extension direction is connected to the permanent magnet body 34 and the cylindrical parts 13 and 14 of the cylindrical body 12.
By the spring 35 inserted between the step part in between,
It is arranged eccentrically on the partition wall plate 6 side.

The above is an example of the configuration of the fluid flow rate/temperature detector according to the present invention.

According to the fluid flow rate/temperature detector of the present invention having such a configuration, if fluid is introduced into the fluid conducting pipe 3 from the fluid introduction port 1 side as shown by the arrow, the fluid The fluid flows from the tube section 4 side into the tube section 5 through the fluid guide hole 8 of the partition plate 6, and then is led out from the fluid outlet 2.

In this case, the fluid moves the permanent magnet body 34 into the cylinder body 1.
While being guided by the cylindrical portion 13 of No. 2, it is pushed up against the spring 35 with an amount of push up depending on the flow rate of the fluid. Therefore, when the permanent magnet 34 comes close to the reed switch 10, and the flow rate of the fluid exceeds a certain value, the reed switch 10 changes from an off state to an on state.

Further, when the fluid flows in the fluid conducting tube 3 as described above, the heat of the fluid is transferred to the tube 12.
When the fluid flows through the cylinder body 12, the heat of the fluid flows through the cylinder body 12.
and the resin material 23 filled in it,
The temperature of the fluid is detected by the thermistor 11.

Therefore, according to the fluid flow rate/temperature detector according to the present invention, the reed switch 10 can detect the flow rate of the fluid flowing into the fluid conduction tube 3, and the thermistor 11 can detect the fluid flow rate. A function of detecting the temperature of the fluid flowing inside the common pipe body 3 can be obtained.

For this reason, the fluid flow rate/temperature detector according to the present invention inserts the fluid conducting pipe 3 into the piping of a solar water heater, and detects the flow rate and temperature of water passing through the piping. It is suitable for application in the case of controlling a solar water heater.

Further, according to the fluid flow rate/temperature detector according to the present invention, the above-mentioned function of simultaneously detecting the fluid flow rate and the fluid temperature can be achieved at the fluid inlet port 1.
A partition plate 6 is provided in the fluid conducting tube 3 having a fluid conducting tube 3, a permanent magnet 34 and a spring 35 are arranged in the fluid conducting tube 3, and a reed switch 10 is provided in the fluid conducting tube 3. It has the feature that it can be obtained with an extremely simple configuration, in which a cylinder 12 having a thermistor 11 and a thermistor 11 installed therein is attached.

Further, according to the power supply circuit for controlling the constant current source of the current switching type logic circuit according to the present invention, the fluid conducting pipe 3
A partition plate 6 provided therein gives a stirring effect to the fluid flowing in the fluid-conducting pipe 3, and the partition plate 6 includes a cylinder 12 in which a thermistor 11 is installed.
is provided, so that the above-mentioned agitation of the fluid can be accurately detected by the thermistor 11.

[Brief explanation of the drawing]

The figure is a schematic cross-sectional view showing an example of a fluid flow rate/temperature detector according to the present invention. 1...Fluid inlet, 2...Fluid outlet, 3...
Pipe body for fluid conduction, 4, 5... Pipe portion, 6... Partition plate, 7... Plate portion, 8... Fluid guide hole, 10... Reed switch, 11... Thermistor, 12... Cylindrical body, 13, 14... Cylindrical portion, 20... Sealing tube of reed switch, 21, 22... Lead of reed switch, 23... Resin material, 30... Cylindrical body, 33...
Crown body, 34... Permanent magnet body, 35... Spring.

Claims (1)

[Claims for Utility Model Registration] A fluid conducting pipe body having a fluid inlet and a fluid outlet; and a second pipe part on the side of the fluid outlet, and the partition wall plate has a pipe part facing the inner surface of the second pipe part and extending in the direction of extension of the fluid conducting pipe body. a plate portion is provided, the plate portion is provided with a fluid guide hole that communicates the first and second pipe portions, and the fluid conducting pipe body is provided with a fluid guide hole that passes through the fluid guide hole. A cylindrical body housing a reed switch and a thermistor is provided so as to extend into the first and second pipe parts, and a spring is provided around the cylindrical body on the side of the second pipe part. A fluid flow rate/temperature detector in which a permanent magnet body, which is biased towards the partition wall plate, is movably arranged.