JP2000220852A - Heat medium heating and transferring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit the efficient operation of a heat medium heating and transferring device without causing any entrainment, of air in the heat medium transferring means by discharging surely gaseous constituent, staying in the heat medium transferring means. SOLUTION: A heat medium heating device is provided with a heating means 7, a heat exchanging means 8, a heat/electricity converting means 9 inserted between the heating means 7 and the heat exchanging means 8, and a heat medium transferring means 10 driven by the electromotive force of the heat/ electricity converting means 9, while the heat medium transferring means 10 is provided with a gas discharging means 12. The gas discharging means 12 is an evacuating means for sucking liquid and gas, whereby gaseous constituent remaining in the heat medium transferring means 9, is discharged forcibly by the pressure effect of the evacuating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid heating and conveying system, and more particularly to a gas discharging device for discharging a gas component staying in a heating medium conveying means used in a heat generating medium circulating system for a thermoelectric generator. Things.

[0002]

2. Description of the Related Art Conventionally, a gas discharging means of a heating medium conveying means used in a heating medium circulating circuit of this kind is generally shown in FIG. This gas discharging means is provided with a gas discharging path 3 above the casing 2 of the heat medium transporting means 1.
The opening / closing stopper 5 is attached to the discharge port 4 of the first embodiment.

In the above configuration, the gas component in the heat medium conveying means 1 before the operation is started is opened by opening and closing the opening / closing stopper 5, and the heat medium is injected from the gas discharge port 4 and at the same time, the gas component inside is expelled. When the liquid overflows from the gas discharge port 4, the opening / closing stopper 5 is closed. After completing this gas discharge work,
The heat medium transfer operation of the heat medium transfer means 1 is started. If the heat medium transfer means 1 does not reach a normal operation state due to gas suction in one gas discharge operation, a normal heat medium transfer operation state can be obtained by repeating the gas discharge operation.

In the above conventional example, the heat medium is injected from the gas outlet 4, but a liquid supply port is provided separately from the gas outlet 4, and a gas component is expelled from the gas outlet 4 while injecting the heat medium therefrom. The same gas can be exhausted.

[0005]

However, in the gas discharge device used in the above-described conventional heat medium transport system, if the internal flow path of the heat medium transport means has a curved flow path shape, the inside of the heat medium transport means will be distorted. The staying gas component does not float smoothly to the gas discharge path, and the gas component cannot be discharged to the outside. In addition, when the heat transfer medium is reduced in size, the diameter of the gas discharge path is reduced, the flow path is closed by the liquid film due to the surface tension of the liquid, and the gas components in the heat transfer medium are not discharged.

[0006]

Means for Solving the Problems To solve the above problems, a heating medium heating and conveying apparatus of the present invention comprises a heating means, a heat exchange means,
A thermoelectric conversion unit inserted between the heating unit and the heat exchange unit, a heating medium transport unit driven by a starting force of the thermoelectric conversion unit, and a gas discharge unit disposed in the heat medium transportation unit. Things.

The gas discharging means is a pressure reducing means for sucking a liquid or a gas in the heating medium conveying means, and a gas component staying in the heating medium conveying means is forcibly discharged by a pressure action. is there.

According to the above invention, the gaseous component in the heat transfer medium can be quickly discharged even if the heat transfer medium is bent and complicated and has a narrow flow path without opening and closing the gas discharge passage. In addition, the heating medium transfer operation can be easily brought into a normal operation state.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating means, a heat exchange means,
A thermoelectric conversion unit inserted between the heating unit and the heat exchange unit; a heating medium transport unit driven by an electromotive force of the thermoelectric conversion unit; and a gas discharge unit is disposed in the heat medium transportation unit. Things. Then, the gas component in the heat medium transport means can be discharged when the heat medium is supplied.

The gas discharging means is a pressure reducing means for sucking a liquid or a gas in the heating medium conveying means. Then, the gas component in the heat medium transporting means is forcibly discharged by the action of the generated decompression force.

The pressure reducing means has a pump chamber in which a bellows is mounted, a pump inflow path in which a check valve is inserted and communicates with a discharge portion of the heat medium conveying means, and a pump outflow path in which a check valve is inserted. It was done. The pressure in the pump chamber is reduced by the expansion and contraction of the bellows.

The pressure reducing means has a piston inscribed in the pump chamber. The pressure in the pump chamber is reduced by the reciprocating motion of the piston.

Further, the pressure reducing means has a check valve provided inside a piston in contact with the pump chamber. When the piston is lifted, the check valve is closed, and the pressure in the pump chamber is reduced.

Further, the heat medium conveying means has a liquid supply means, and an outflow path of the gas discharge means has a closed circuit structure communicating with the liquid supply means. Then, the gas flowing out of the outflow passage is collected by the liquid supply means.

Further, a gas-liquid detecting means for discriminating a gas and a liquid is provided on an outflow path of the gas discharging means. Then, it detects that the fluid in the outflow path has changed from gas to liquid, and stops the operation of the gas discharging means.

The gas extracting means includes a pressure reducing means using a plunger pump capable of automatic operation, a control means for controlling the operation of the pressure reducing means, and a gas-liquid detecting means provided in the outflow passage for distinguishing between gas and liquid. It is composed. Then, the gas discharging means detects that the fluid in the outflow path has changed from gas to liquid, and the pressure reducing means automatically stops.

Further, the heating medium conveying means has a liquid supply means in an inflow path, and the heating medium circulating circuit has a discharge portion of the heating medium conveying means.
In this configuration, a circulation circuit closing means is provided in a circulation path to the inflow path of the liquid supply means. Then, by closing the circuit closing means and operating the gas discharging means, only the liquid in the liquid supply means flows into the gas discharging means.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a top view of a heating medium heating / transporting apparatus equipped with gas discharge means according to Embodiment 1 of the present invention, and FIG.
1 is a heating medium circulation circuit diagram of a heating medium transport system using a heating medium heating and transporting device. FIG. 3 is a sectional view in which the pressure reducing means is mounted on the gas discharging means.

In FIG. 1 to FIG. 3, reference numeral 6 denotes a heating medium heating / conveying apparatus, and a heating medium heating unit is inserted between the heating means 7 and the heat exchange means 8 using combustion heat, and between the heating means 7 and the heat exchange means 8. The heat medium circulating circuit includes a heat medium transfer unit 10, a liquid supply unit 11, and a gas discharge unit 12 attached to the heat medium transfer unit 10. The heat medium conveying means 10 includes a heat medium inflow path 13 and a heat medium discharge path 14.
And the casing 1 to which the impeller shaft 15 is attached
6 and a driving unit including a motor 18, a driving magnet 19, and a motor fixing base 20. A centrifugal pump having no self-sufficiency is used as a heat medium conveying means. The motor 18 is driven by the electromotive force of the thermoelectric converter 9. Reference numeral 21 denotes a pump chamber 23 in which a bellows 22 is attached and a pump inflow passage 2 in which a check valve 24 is inserted.
5 and a pump outflow passage 27 into which a check valve 26 is inserted. The pressure in the pump chamber 23 is reduced by the expansion and contraction of the bellows 22. The liquid supply means 11 includes a container 29 having a liquid supply port 28, an outgoing pipe 30, and a return pipe 31. 32
Is a fuel tank of the heating means 7, 33 is a combustion igniter, 34
Is a circulation circuit closing means, and 35 is a radiator.

Next, the operation will be described. When the heat medium is poured from the supply port 28 of the liquid supply means 11 and the container 29 is filled with the heat medium, the circulation circuit is closed by the circulation circuit closing means 34 and the gas discharge means 12 is closed. Bellows 2 of a certain decompression means 21
When the valve 2 is compressed, the check valve 24 is closed, the check valve 26 is opened, and the gas in the pump chamber 23 is pushed out to the pump outlet 27. Subsequently, when the bellows 22 is extended, the check valve 26 is closed, the check valve 24 is opened, and the fluid in the heat medium transfer means 10 is sucked up into the pump chamber 23, and the pressure in the heat medium transfer means 10 is reduced. Due to this pressure drop, the heat medium in the liquid supply means 11 is transferred to the forward pipe 30, the heat medium transport means 10, the gas discharge means 12
And the gas in the flow path is pushed out to the pump chamber 23. Then, the inside of the heat medium transporting means 10 is filled with the heat medium. After the inside of the heating medium conveying means 10 is filled with the heating medium, the heating means 7 is ignited by the combustion igniter 33 to start heating. When the heating of the heating means 7 starts, the temperature of the upper surface of the thermoelectric conversion means 9 rises, a temperature difference from the lower surface is generated, the thermoelectric conversion means 9 generates electric power, and electric power is supplied to the heat medium transport means 10, The drive magnet 19 is rotated by the motor 18 of the heat medium transporting means 10. The rotation of the drive magnet 19 rotates the impeller 17 magnetically coupled, and the heat medium is accelerated, pressurized and circulated. When the transfer of the heat medium is started and the heat medium is sent to the radiator 35 circuit and decreases in the heat medium supply means 11, the heat medium is supplied from the supply port 28, and the entire circulation circuit is filled with the heat medium. I do. After the circulation path is filled with the heat medium, the water supply port is closed to set the heat medium heating / transporting device 6 to a normal operation state.

(Embodiment 2) FIG. 4 is a sectional view of a gas discharging means according to Embodiment 2 of the present invention. The difference from the first embodiment is that the bellows 22 is a piston 36 and the pump chamber 23 is depressurized. The piston 36 is provided with a check valve 37.

The components having the same reference numerals as in the first embodiment have the same structure, and the description is omitted.

Next, the operation will be described. When the piston 36 of the pressure reducing means as the gas discharging means 12 is depressed, the check valve 37 is opened, and the gas in the pump chamber 23 flows out of the outflow passage 27.
It is pushed out to. Subsequently, when the piston 36 is pulled up, the check valve 24 is opened, the fluid in the heat medium transport unit 10 is sucked up, and the pressure in the heat medium transport unit 10 decreases. Due to this pressure drop, the heat medium in the liquid supply means 11 flows into the heat medium transfer means 10 and at the same time, the gas component in the heat medium transfer means 10 is pushed out to the pump chamber 23, and the heat medium transfer means 10
The inside is filled with a heating medium.

(Embodiment 3) FIG. 5 is a sectional view of an outflow passage of gas discharging means according to Embodiment 3 of the present invention. The difference from the first embodiment is that the outflow path 38 of the gas discharge unit 12 is connected to the liquid supply unit 1.
1 so that the heat medium flowing out of the gas discharge means 12 is recovered in the circulation circuit system.

The components having the same reference numerals as in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation will be described. When the bellows 22 of the pressure reducing means which is the gas discharging means 12 is compressed,
The check valve 24 is closed, the check valve 26 is opened, and the gas in the pump chamber 23 is pushed out to the outflow passage 38 and flows into the container 29 of the liquid supply means 11. Subsequently, when the bellows 22 is extended, the check valve 26 closes, the check valve 24 opens, and the fluid in the casing 16 of the heat medium transporting means 10 is sucked into the pump chamber 23,
The pressure in the casing 16 decreases. Due to this pressure drop, the heat medium in the liquid supply means 11 flows into the casing 16 from the outward pipe 30 through the heat medium inflow path 13 having a flow path shape bent.

By repeating the above operation, the fluid flowing out of the outflow passage 38 of the gas discharge means 12 flows from the gas into the final pure heat medium from the mixture of the gas and the heat medium and flows into the liquid supply means 11.

(Embodiment 4) FIG. 6 is a sectional view of a gas-liquid detecting means according to Embodiment 4 of the present invention. The difference from the first embodiment is that a gas-liquid detecting means 40 having rotating blades 39 for distinguishing a gas and a liquid is provided in an outflow path 38 of the gas discharging means 12.

The components having the same reference numerals as in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation will be described. At the initial stage of the operation of the gas discharging means 12, the gaseous component is discharged from the heating medium conveying means 10. The discharged gas component flows into the liquid supply means 11 through the rotating blade 39 of the outflow passage 38. Rotating blade 3
Reference numeral 9 indicates that when the fluid impinging on the blades is gas, the momentum for rotating the blades is small, and the rotating blades 39 are substantially stopped.

When the operation of the gas discharge means 12 is continued and the heat medium transport means 10 is filled with the heat medium and the heat medium is discharged from the gas discharge means 12 to the outflow passage 38, the rotating blades 39 are liquid and have a mass of It rotates with the heat medium flow with large momentum.
The rotation of the rotary blades 39 determines that the heat medium transport unit 10 is filled with the heat medium, and stops the operation of the gas discharge unit 12.

(Embodiment 5) FIG. 7 is an external view of a gas discharging means showing Embodiment 5 of the present invention. The difference from the first embodiment is that the plunger pump 41 is used as the pressure reducing means, and the automatic operation is enabled. Further, a control means 42 for controlling the plunger pump 41 and a gas-liquid detection means 43 are provided. The gas-liquid detecting means 43 includes electrodes 45 and 46 in a container 44, and identifies whether the fluid in the outflow path is a gas or a liquid based on a change in electric resistance between the two electrodes.

The components having the same reference numerals as in the first embodiment have the same structure, and the description is omitted.

Next, the operation will be described. After the heat medium is poured from the supply port 28 of the liquid supply means 11 and the container 29 is filled with the heat medium, the control means 42 is operated to operate the plunger pump 4.
Start 1 Due to the suction force of the plunger pump 41, the pressure in the heat medium transport unit 10 decreases, and the heat medium in the liquid supply unit 11 flows into the heat medium transport unit 10. In the initial stage of the operation, the fluid sent from the plunger pump 41 to the outflow passage 38 is a gaseous component.
The electric resistance between the plunger pumps 45 and 45 becomes high.
Continue the operation of 1.

The operation of the plunger pump 41 is continued,
When the heating medium conveying means 10 is filled and the heating medium flows into the outflow passage 38, the electric resistance value between the electrodes 44 and 45 of the gas-liquid detecting means 43 decreases, and the reduced resistance value is input to the control means 42 and controlled. The means 42 stops the operation of the plunger pump 41.

[0037]

As is clear from the above description, the gas collecting apparatus of the present invention has the following effects.

According to the present invention, a centrifugal pump having no self-sufficiency can be used as the heat transfer means, and the heat medium can be transferred efficiently using the electromotive force of the thermoelectric conversion means 9.

Further, since the gas is discharged using the negative pressure suction of the gas discharging means 12, the discharging time is shortened. Although the internal flow path configuration of the heat medium transporting means 10 is narrow, and the flow path of the heat medium is trapped and a liquid film is formed due to the surface tension of the heat medium, gas components in the heat medium transporting means 10 can be discharged.

Further, since the heat medium discharged from the gas discharge means 12 is returned to the heat medium circulation circuit system, the operation of recovering the heat medium becomes unnecessary. In addition, since the discharge side and the suction side of the gas discharge means 12 form a bypass path via a check valve, even if foreign substances are clogged in the heat medium circulating circuit and the closed state is established, the gas discharge means 12 functions as a relief path. By acting, the heat medium transporting means 10 can be prevented from being in a high pressure state and damaged.

Further, it is possible to recognize that the gas discharge has been completed by stopping the rotating blades 39 of the gas-liquid detecting means inserted into the outflow passage 38, so that the gas component in the heat medium transport means 10 can be reliably discharged. .

[Brief description of the drawings]

FIG. 1 is a top view of a heat medium heating and conveying device according to a first embodiment of the present invention.

FIG. 2 is a heating medium circulation circuit diagram of a heating medium transfer system using the heating medium heating and transferring apparatus.

FIG. 3 is a sectional view showing a gas discharging means of the heating medium heating and conveying device.

FIG. 4 is a cross-sectional view illustrating a gas discharge unit according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating an outflow path of a gas discharge unit according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating a gas-liquid detection unit inserted into an outflow passage according to a fourth embodiment of the present invention.

FIG. 7 is a principle configuration diagram showing a gas discharging unit according to a fifth embodiment of the present invention.

FIG. 8 is a sectional view showing a conventional gas discharging means.

[Explanation of symbols]

 Reference Signs List 6 heating medium heating / conveying device 7 heating means 8 heat exchanger 9 thermoelectric conversion means 10 heating medium conveying means 11 liquid supply means 12 gas discharge means 19 combustion means 21 decompression means 22 bellows 23 pump chamber 24, 26 check valve 25 inflow Path 27 Outflow path 36 Piston 39 Rotating blade 40 Gas-liquid detecting means 41 Plunger pump 42 Control means

Claims (10)

[Claims] 1. Heating means, heat exchange means for heating a heat medium with heat generated by said heating means, thermoelectric conversion means inserted between said heating means and heat exchange means, electromotive force of said thermoelectric conversion means A heating medium heating / transporting device in which a gas discharge means is disposed in a heating medium transporting means of a thermal power generation heating medium circulating system comprising a heating medium transporting means driven by a heat medium and circulating a heating medium. 2. A heating medium heating / transporting apparatus according to claim 1, wherein said gas discharging means is a pressure reducing means for sucking a liquid or gas in said heating medium carrying means. 3. The decompression means comprises a pump chamber in which a bellows is mounted, a pump inflow path in which a check valve is inserted and which communicates with a discharge portion of the heat medium conveying means, and a pump outflow path. The heat medium heating and conveying apparatus according to claim 2, wherein the pressure is reduced. 4. The heat medium heating / transporting apparatus according to claim 2, wherein the pressure reducing means has a pump chamber and a piston in contact with the pump chamber, and the pressure in the pump chamber is reduced by the reciprocating motion of the piston. 5. A heating medium heating and conveying apparatus according to claim 4, wherein a check valve is provided inside the piston. 6. The heating medium heating and conveying apparatus according to claim 1, wherein the heating medium conveying means has a liquid supply means, and an outflow path of the gas discharge means communicates with the liquid supply means. 7. A structure in which gas-liquid detecting means for discriminating between gas and liquid is provided in the outflow path of the gas discharging means, and when the fluid in the outflow path changes from gas to liquid, the operation of the pressure reducing means is stopped. The heating medium heating and conveying device according to claim 1. 8. The gas discharge means includes an automatic operation type decompression means, a control means for controlling the operation of the decompression means, and a gas-liquid detection means provided in an outflow passage for distinguishing between gas and liquid. 2. The heat medium heating / transporting apparatus according to claim 1, wherein the operation of the pressure reducing means is automatically stopped by detecting that the fluid has changed from gas to liquid. 9. The heating medium heating / transporting apparatus according to claim 1, wherein the gas discharging means is a plunger pump. 10. The heating medium heating / transporting apparatus according to claim 1, further comprising a circulation circuit closing means in a circulation path from a discharge section of the heating medium transporting means to an inflow path of the gas collecting means.