JPH0418227B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] This invention vaporizes a working fluid 19 in a first evaporator 01, and a second condensing section 10 provided at a lower position than the first evaporator 01.
The heat of condensation is extracted from the injector 02 or the pump 18, and the working fluid 19 is supplied to the upper heat exchange system installed at a higher position than the condensate reservoir 12, and the heated and vaporized steam is transferred to the first condensing section 09. This is a heat transfer device that utilizes the heat of condensation by moving to the evaporator and cooling it using a heat exchanger 20, and that can simultaneously transfer heat to a condensing section located at a higher position and a lower position than the evaporator. It is.

[Conventional technology]

Conventionally, heat pipes, thermosyphons, and the like are known as heat transfer devices that do not require external mechanical driving force such as a power pump. All of these devices attempt to transport heat by utilizing phase changes caused by evaporation and condensation of the heat medium, but in these conventional heat transfer devices, heat transfer is performed from below to above. It is unsuitable to transfer heat from above to below.

〔the purpose〕

Unlike such conventional methods, the present invention makes it possible to simultaneously transfer heat from above to below and from below to above, and does not use any external mechanical driving force for the heat transfer. The aim is to provide a heat transfer device that is not necessary.

〔composition〕

In order to achieve the above object, the present invention combines two loops, and utilizes the heat of condensation generated in the heat transfer process from above to below, and transfers the condensed liquid from below to above through the injector 02 or A loop that has a pumping action using the pump 18 and the check valve 13 and a working fluid discharged from the injector 02 or the first evaporator 01 by the pump 18.
between the first evaporator 01 and the second evaporator 05, or above the first evaporator 01, in order to effectively utilize the heat retained in the working fluid that is returned to the It is characterized by being constructed with a loop that has the same function as a regular loop heat pipe installed in the heat pipe.

That is, according to the invention, the device is composed of two loop circuits. The first loop includes a first evaporator 01, an injector 02, a steam pipe flow path 03, a liquid flow path 04, a second evaporator 05, and a steam riser pipe flow path 0.
6. To a position higher than the working fluid downcomer flow path 07, etc., or the evaporator constituted by the first evaporator 01, the steam riser pipe flow path 06 with the turbine 15 interposed, the working fluid downcomer flow path 07, etc. This is a heat transport circuit. The second loop includes the first evaporator pipe 01 and the steam pipe flow path 11.
Condensate reservoir 12, check valve 13, condensate return pipe 14,
It is composed of an injector 02, a pump 18, etc., and is a heat transport circuit to a position lower than the evaporator. With this configuration, the present invention provides a heat transfer device characterized by providing two circuits that can simultaneously transfer heat from above to below and from below to above.

〔Example〕

Next, embodiments of the present invention will be described.

FIG. 1 is an explanatory diagram showing one embodiment according to claim 1 of the present invention, and the entirety is a communication circuit with a loop structure. 01 is a first evaporator, and part of the steam generated here is used to operate the injector 02, but the remaining steam is provided at a lower position than the first evaporator 01 via a steam pipe flow path 11. and transported to the condensing section 10. The condensed working fluid 19 enters the condensate reservoir 12, passes through the check valve 13, and the condensate return pipe 1.
4 and enters Injector 02. First evaporator 01
A part of the steam generated in
is sucked into the second evaporator 05. 2nd evaporator 0
At step 5, the working fluid is vaporized, moves up the steam riser channel 06, is liquefied in the first condensing section 09, and returns to the first evaporator pipe 01 through the working fluid downcomer channel 07.

FIG. 2 is an explanatory diagram showing an embodiment according to claim 2 of the present invention, in which a turbine 15 is interposed in the steam riser passage 06 instead of the injector 02 shown in FIG. A part of the steam generated in the steam vessel 01 passes through the steam pipe flow path 03 and drives the turbine 15 while passing through the steam riser pipe flow path 06 and the communication pipe flow path 08.
The working fluid is then condensed by releasing heat in the first condensing section 09, flows through the working fluid downcomer channel 07, and returns to the first evaporator 01. The other part of the steam generated in the first evaporator 01 passes through the steam pipe passage 11, releases heat in the second condensing section 10, condenses, and enters the condensate distillate 12. This condensate passes through a check valve 13, and is pumped up to the first evaporator 01 via a condensate return pipe passage 14 by a pump 18 driven by a drive system consisting of a turbine 15, a generator 16, and a storage battery 17, and heat is transferred from above. It constitutes a lower heat exchange system that moves downward. The upper heat exchange system that transfers heat from the bottom to the top is the same as that shown in FIG. 1, except that the injector 02, liquid flow path 04, and second evaporator 05 are not included.

The first evaporator 01 and the second evaporator 05 in the loop heat pipe of the present invention do not need to have a box-shaped structure as shown in the figure, and may be constructed from a single metal tube.

The heat transfer device of the present invention can be modified in various ways. For example, the two evaporators 01 and 05 do not necessarily need to be separated, and can be configured as one unit as shown in FIG. 2 if the amount of steam is distributed appropriately. Various arrangements can be considered for the arrangement of the evaporators 01, 05, etc. as long as the functions of the present invention are not impaired.

〔Effect of the invention〕

The heat transfer device of the present invention is capable of pumping the working fluid from the cooler (condensing section) installed below to the evaporator installed above without applying external mechanical driving force. , 05). Furthermore, since the latent heat of the working fluid is utilized, a large amount of heat can be transported per volume. Therefore, the heat transfer device of the present invention is suitable for melting snow on roofs of houses, roads, and the like. Note that the amount of heat used in the injector 02 is stored in the working fluid and transported to the evaporator 05, so there is little thermal loss.

[Brief explanation of drawings]

FIG. 1 is a simple explanatory diagram of an embodiment according to claim 1 of the present invention, and FIG. 2 is a simple explanatory diagram of an embodiment according to claim 2. 01...First evaporator, 02...Injector, 0
3... Steam pipe flow path, 04... Liquid flow path, 05... Second evaporator, 06... Steam rising pipe flow path, 07... Working liquid down pipe flow path, 08... Connection pipe flow path, 09...
First condensing section, 10... Second condensing section, 11... Steam pipe passage, 12... Condensate distillate, 13... Check valve, 1
4... Condensate return pipe flow path, 15... Turbine, 1
6... Generator, 17... Storage battery, 18... Pump, 19... Working fluid, 20... Heat exchanger.

Claims (1)

[Claims] 1. A first evaporator 01 for vaporizing the working fluid;
A part of the vaporized working fluid (steam) is transferred to the injector 0.
2, a liquid flow path 04 for supplying the working fluid 19 drawn from the condensate return pipe 14 by the injector 02 to the second evaporator 05, and a liquid flow path 04 for supplying the steam generated in the second evaporator 05 to the second evaporator 05. 2 Steam riser pipe flow path 06 provided for moving upward from the evaporator 05, the first
a working fluid downcomer flow path 07 that connects to the lower part of the evaporator 01 and rises upward; a connecting pipe flow path 08 that connects the steam riser pipe flow path 06 and the working fluid downcomer flow path 07;
An upper heat exchange system is provided in which heat is transferred from below to above through a loop consisting of a first condensing section 09 that is interposed between the connecting pipe flow path 08 and the working fluid downcomer flow path 07 and from which heat is removed by a heat exchanger 20. In addition, a steam pipe flow path 11 connecting the first evaporator 01 and the second condensing section 10 provided below the first evaporator 01, a condensed liquid reservoir 12 provided at a lower position than the second condensing section 10, and a reverse channel provided at the outlet thereof. A loop consisting of a condensate return pipe flow path 14 connected to the injector 02 via a stop valve 13 constitutes a lower heat exchange system that transfers heat from above to below, and as a whole, downward heat transfer and upward heat transfer are performed at the same time. A heat transfer device characterized by: 2 a first evaporator 01 for vaporizing the working fluid;
A first steam riser flow path 06 with a turbine 15 interposed therebetween that operates with a part of the vaporized working fluid (steam).
Condensate return pipe flow path 1 provided at the bottom of the evaporator 01
4 and rising upward, the first condensate is interposed between the steam riser pipe flow path 06 and the working fluid downcomer flow path 07, and is slowly heated by the heat exchanger 20. The loop consisting of the section 09 constitutes an upper heat exchange system that transfers heat from below to above, and a steam pipe flow path 11 connecting the first evaporator 01 and the second condensing section 10 provided below it, and the second condensing section Part 10
A condensate reservoir 12 located at a lower position, a check valve 13 located on the outlet side thereof, a pump 18 provided on the outlet side of the check valve 13, and a first evaporator 01 provided below the first evaporator 01. A second loop is formed with a condensate return pipe flow path 14 connecting the pump 18 and connecting the turbine 1
5. The pump 18 is operated by a drive system consisting of a generator 16 and a storage battery 17, and a second loop constitutes a lower heat exchange system that transfers heat from above to below, thereby achieving overall downward heat transfer and upward heat transfer. A heat transfer device characterized by simultaneous operation.