JPH0142737Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a technique for supplying a heated liquid to an evaporation space in a boiler.

[Conventional technology]

Conventionally, the liquid to be heated was supplied under pressure to a high-pressure evaporation space using an electric pump.

[Problem that the invention attempts to solve]

However, high-pressure pumps are expensive and require a large amount of expensive electric power to drive the high-pressure pumps, resulting in high equipment and operating costs.

An object of the present invention is to make the equipment for supplying the heated liquid to the evaporation space inexpensive and consume very little power or do not require power.

[Means for solving problems]

A characteristic configuration of the present invention is that an evaporation space in which a gas phase solvent is generated by heating a salt solution and a salt solution production space that supplies the salt solution to the evaporation space are connected by a circulation channel equipped with a pump, and the salt solution is A permeation membrane is provided between the production space and the solvent storage space to allow the liquid phase solvent to permeate from the solvent storage space to the salt solution production space, and its effects are as follows.

[Effect]

In other words, the higher the concentration of the salt solution in the salt solution production space, the higher the osmotic pressure at which the liquid phase solvent in the solvent storage space flows into the salt solution production space through the osmotic membrane, even if the evaporation space is under high pressure. The liquid phase solvent can be sufficiently replenished into the evaporation space.

In addition, since the salt solution in the salt solution production space is forcibly stirred by the action of the circulation flow path, it is possible to reliably prevent a decrease in the salt solution concentration due to the penetration of the liquid phase solvent near the permeation membrane. By maintaining a high concentration, the osmotic pressure can be reliably maintained at a high level at all times.

The circulation channel can be freely designed to be short and have no or few bends as needed, so the pressure drop can be made sufficiently small. Electric pumps, which are extremely cheap and consume less electricity, can be used as bubble pumps or other heat-driven pumps that do not consume electricity.

[Effect of idea]

As a result, it is possible to replenish the liquid phase solvent into the high-pressure evaporation space with inexpensive equipment that effectively utilizes permeable membranes, and at low operating costs without requiring large amounts of expensive electricity as in the past. It has now become possible to provide boilers that are extremely economical.

〔Example〕

Next, an example will be shown with reference to FIG.

A closed evaporation space 1 that accommodates a salt solution, and a closed salt solution production space 8 that supplies the salt solution to the evaporation space 1.
and circulation channels 10a and 10b having pump 9.
A permeation membrane 3 is provided between both spaces 1 and 8 to form a closed solvent storage space 2 and allow the liquid phase solvent to permeate from the solvent storage space 2 to the salt solution production space 8. A boiler is provided with a device 4 for heating the salt solution inside.

A hot air heater that connects a fan coil 5 to the evaporation space 1 through a gas-phase solvent supply pipe 6 and to a solvent storage space 2 through a liquid-phase solvent reduction pipe 7, and uses hot air from the fan coil 5. has been configured.

[Another example]

Next, another embodiment will be described.

As shown in FIG. 2, the circulation channels 10a, 1
0b is provided with a heat exchange section 11 that cools the salt solution returning from the evaporation space 1 to the salt solution production space 8 with the liquid phase solvent of the solvent storage space 2 to prevent the permeation membrane from deteriorating due to the high temperature salt solution, An even more convenient boiler can be obtained if there is almost no heat loss.

The solvent storage space 2 is formed into an open type, and the liquid phase solvent is supplied to the solvent storage space 2 from a supply source such as a water supply, and the liquid phase solvent from the fan coil 5 is collected or released. In addition, the structure for supplying the liquid phase solvent to the solvent storage space 2 can be changed appropriately.

The device 4 for heating the salt solution in the evaporation space 1 may be of any type, such as one using gas or petroleum as fuel, an electric heating type, or a waste heat recovery type.

The type of permeable membrane 3 can be appropriately selected, such as a cellulose acetate membrane, a polyamide membrane, or a composite membrane in which a diluted membrane is formed on a porous polymer support.

To prepare a salt solution, an appropriate solute such as NaCl can be selected, and an appropriate solvent such as water can be selected.

Boilers are used for example, floor heating systems, water heaters,
It can be anything else.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram showing an embodiment of the present invention, and FIG. 2 is a conceptual diagram showing another embodiment of the present invention. 1... Evaporation space, 2... Solvent storage space, 3...
Permeable membrane, 8... Salt solution production space, 9... Pump,
10a, 10b...Circulation flow path, 11...Heat exchange section.

Claims (1)

[Claims for Utility Model Registration] An evaporation space 1 for generating a gas phase solvent by heating a salt solution and a salt solution production space 8 for supplying the salt solution to the evaporation space 1 are connected to a circulation flow path 1 with a pump 9.
Connected by 0a and 10b, the salt solution production space 8
The boiler is provided with a permeation membrane 3 between the solvent storage space 2 and the solvent storage space 2 to allow the liquid phase solvent to permeate from the solvent storage space 2 to the salt solution production space 8. Claims for Utility Model Registration: The circulation channels 10a and 10b are provided with a heat exchange section 11 for cooling the salt solution returning from the evaporation space 1 to the salt solution production space 8 with the liquid phase solvent in the solvent storage space 2. Boilers as described in paragraph.