KR102468211B1 - Boiler device using heat medium oil with assistance heating means - Google Patents

Abstract

A boiler apparatus using thermal oil having an auxiliary heating means is disclosed. A boiler apparatus using thermal oil having an auxiliary heating means according to the present invention includes a main tank having a thermal oil accommodating portion accommodating thermal oil and a heating water accommodating portion distinct from the thermal oil accommodating portion; A heating water distribution tank configured to temporarily stay in the heating water circulated in the heating space by the heating pipe; Heating water heating pipes installed vertically; and a heater for heating the thermal oil accommodated in the thermal oil accommodating unit, and a heating water auxiliary heating means for heating the heating water in advance or additionally, wherein the heating water auxiliary heating means is provided for introducing the thermal oil into the heating water. a thermal oil inlet pipe provided with inlet holes and coupled while maintaining a distance from the surface of the heater; a first thermal oil circulation pipe having one end connected to the thermal oil inlet pipe and the other end located in the heating water receiving part; a second thermal oil circulation pipe having one end located in a lower region of the thermal oil accommodating unit and the other end located in the heating water accommodating unit; and a heat exchange pipe in which a heating water discharge path and a heat transfer oil circulation path are formed.

Description

Boiler device using thermal oil with auxiliary heating means {BOILER DEVICE USING HEAT MEDIUM OIL WITH ASSISTANCE HEATING MEANS}

The present invention relates to a boiler apparatus using thermal oil having an auxiliary heating means, and more particularly, heating that is discharged to a heating pipe by circulating the heated thermal oil in a thermal oil receiving unit by a heater and circulating the heated thermal oil to a heating water receiving unit. It relates to a boiler apparatus using thermal oil having an auxiliary heating means capable of supplying water in a heated state to a heating space.

In general, various configurations of boilers used for heating and hot water supply have been proposed by research and development to obtain more heat by using a smaller amount of fuel. In the case of these prior arts, most of them are technologies capable of providing combustion heat to a hot water tank without waste, and there is a limit to reducing heating costs.

Recently, a heat transfer oil boiler that circulates heat transfer oil instead of hot water in a heating pipe has been devised and used.

The thermal oil boiler described above can drastically reduce heating costs compared to oil and gas boilers that directly heat hot water. There were several problems, such as the difficulty in sealing and repairing when an oil leak occurs due to damage to the heating pipe, and the need to separately install a pipe that can use hot water.

As a prior art, Korean Utility Model Registration No. 20-0402470 (published date: 2005.11.30) discloses a boiler using an electric heater and thermal oil. A boiler using an electric heater and thermal oil has a vacuum state in which thermal oil is injected inside, and an electric heater is installed to be inserted inside to directly heat the thermal oil to a high temperature and vaporize it. The through-hole heater body and the plurality of assembly holes formed in the heater body are sealed and assembled, but the inside is formed as a hollow to maintain a vacuum state, and the inside of the hollow is assembled to communicate with the inside of the heater body. The pipe and the plurality of heat radiation pipes are installed to be accommodated inside, and the inside is partitioned into a hot water chamber and a heating water chamber by a diaphragm. It is configured to include a case in which the and discharge pipe are installed in communication, and when heat is applied through an electric heater, the thermal oil is vaporized and transferred to the inside of a plurality of heat radiation pipes to heat the heat radiation pipes to a high temperature at the same time, through which hot water and heating It is designed to heat water.

However, this boiler is configured so that heating water and hot water directly flow into the heating water chamber and the hot water chamber from the heating water inlet pipe or the hot water inlet pipe, thereby lowering the overall temperature of the heating water and hot water stored in the heating water chamber and the hot water chamber. Due to this, the electric heater had a problem in that it had to continuously consume a lot of power to increase the temperature of heating water or hot water.

On the other hand, as another prior art to solve the problems of the prior art, Korean Patent Registration No. 10-1640938 (published date: 2016.07.19) discloses a boiler using thermal oil. A boiler using such a thermal oil includes a distribution tank accommodating portion located at the lower portion, a thermal oil accommodating portion located above the dispersion tank accommodating portion and separated by a first diaphragm and receiving thermal oil, and a thermal oil accommodating portion located above the thermal oil accommodating portion. A main tank having a heating water receiving part isolated by 2 diaphragms; a heating water distribution tank installed in the distribution tank accommodating part so that the heating water circulated in the heating space flows in and temporarily stays; It is made in the shape of a long tube, and is installed vertically in the heat medium oil receiving part so that the heating water stored in the heating water distribution tank is heated and moved to the heating water receiving part. A plurality of heating water heating pipes communicating with the heating water receiving unit; and a heater installed in the thermal oil accommodating portion to heat the thermal oil and increase the temperature of the heating water passing through each of the heating water heating pipes.

In this way, the heating water circulated in the heating space is temporarily stored and then distributed to several heating water heating tubes, and each heating water heating tube is configured to independently heat with thermal oil, so that the heating water can be quickly heated with low power. Thereby, it is possible to save electrical energy.

However, the boiler using such thermal oil has a problem in that the temperature of the heating water, which has been raised inside each heating water heating tube disposed in the thermal oil accommodating unit, is temporarily accommodated in the heating water accommodating unit. That is, since the heating water heated up inside each heating water heating pipe is temporarily stored in the heating water receiving part not provided with a heating means and then discharged to the heating pipe, the temperature of the heating water discharged to the heating pipe decreases, thereby reducing the heating efficiency. There was a problem with this degradation.

. Republic of Korea Utility Model Registration No. 20-0402470 (Announcement date: 2005.11.30) . Republic of Korea Patent No. 10-1640938 (Announcement date: 2016.07.19)

An object of the present invention is to increase the temperature of heating water discharged through a heating pipe by circulating the heated thermal oil in a heating water receiving unit in a boiler using thermal oil by a heater, and then supplying the heated thermal oil to a heating space. It is to provide the means to do so.

In addition, the problem to be solved by the present invention is not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clear to those skilled in the art from the description below. You will be able to understand.

According to the present invention, the main tank having a thermal oil accommodating portion for accommodating thermal oil and a heating water accommodating portion distinguished from the thermal oil accommodating portion; A heating water distribution tank configured to temporarily stay in the heating water circulated in the heating space by the heating pipe; a plurality of heating water heating pipes having a hollow shape and being vertically disposed in the heat medium oil accommodating part, having a lower end communicating with the heating water distribution tank, and an upper end communicating with the heating water accommodating part; and a heater installed in the thermal oil accommodating portion to heat the thermal oil accommodated in the thermal medium oil accommodating portion to raise the temperature of the heating water passing through each of the heating water heating pipes, wherein the heating water accommodating portion and the thermal medium are heated. A heating water auxiliary heating means is provided in the oil receiving part to preliminarily or additionally increase the temperature of the heating water discharged to the heating pipe through the heat medium oil, and the heating water auxiliary heating means has inlet holes through which the heat medium oil flows in, a thermal oil inlet pipe coupled to the surface of the heater while maintaining a distance therebetween; a first thermal oil circulation pipe having one end connected to the thermal oil inlet pipe and the other end located in the heating water receiving part; a second thermal oil circulation pipe having one end located in a lower region of the thermal oil accommodating unit and the other end located in the heating water accommodating unit; and a double hollow type, wherein a heating water discharge path for discharging the heating water accommodated in the heating water receiving unit to the heating pipe is formed at the center, and a heat transfer oil circulation path for passing the heat transfer oil is formed on the outside. One side of the oil circulation path is connected to the first thermal oil circulation pipe and the other side is connected to the second thermal oil circulation pipe, and the heating water discharge path is composed of a heat exchange pipe connected to the heating pipe. It is achieved by a boiler apparatus using thermal oil with a heating means.

A heating water temperature sensor and a thermal oil temperature sensor for detecting the temperature of the heating water accommodated in the heating water accommodating unit may be provided in the heating water accommodating unit and the thermal oil accommodating unit, respectively.

An auxiliary heater for selectively heating the heating water may be provided in the heat exchange tube.

A plurality of heating water inlet holes through which heating water is introduced into the heating water discharge passage through the heat transfer oil circulation passage may be formed in the heat exchange pipe.

The first thermal oil circulation pipe is opened when the heating water temperature of the heating water accommodating part is lower than the thermal oil temperature of the thermal medium oil accommodating part, and closed when the heating water temperature and the thermal medium oil temperature are equal to each other. A valve may be provided.

A thermal oil circulation pump may be provided in the first thermal oil circulation pipe or the second thermal oil circulation pipe to circulate the thermal oil when the opening/closing valve is opened.

According to the present invention, a main tank having an inlet through which heating water circulated in a heating space flows in and an outlet through which heating water is discharged through being connected to a heating pipe and forming a thermal oil accommodating portion in which thermal oil and thermal storage material are accommodated is provided. ; The heating water circulated in the heating space by the heating pipe is introduced, circulates in the thermal oil accommodating unit, is heated by heat exchange with the thermal oil, and is installed inside the thermal oil accommodating unit to circulate back to the heating space. ; A heater installed in the thermal oil accommodating portion to heat the thermal oil accommodated in the thermal medium oil accommodating portion to increase the temperature of the heating water passing through the heating water heating pipe, wherein the heating water heating pipe accommodates the thermal medium oil An auxiliary heating water heating means is provided inside the part that is bent and arranged in multiple ways, both ends of which are connected to the inlet and the outlet, and which raises the temperature of the heating water discharged through the outlet. Having an auxiliary heating means comprising a plurality of heat exchange fins attached to the outer surface of the heating water heating pipe to expand the heat exchange area of the heating pipe to exchange heat with the heating water heated by the heater It is achieved by a boiler device using thermal oil.

A hot water heating pipe coupled to the heating water heating pipe by the heat exchange pins may be provided inside the thermal oil accommodating portion while maintaining a distance therebetween.

The heating water heating pipe, the hot water heating pipe, and the heat exchange pins constitute one heat exchange module, and 1 to 4 heat exchange modules may be disposed in parallel or in series.

Recirculation means for recirculating some or all of the heating water back to the inlet when the temperature of the heating water discharged to the outlet is lower than the set temperature is provided at the inlet and the outlet, and the recirculation means, an inflow multi-way valve connected to the heating pipe at the upper inlet side and connected to the heating water heating pipe at the inlet side and installed at the inlet port; The outlet side is connected to the heating pipe, the outlet side is connected to the heating water heating pipe, and a discharge temperature sensor for detecting the temperature of the heating water passing through the heating water heating pipe is provided and installed in the outlet. directional valve; and a recirculation pipe having one end connected to the inflow multi-way valve and the other end having a recirculation opening/closing valve and connected to the outlet multi-way valve.

According to the present invention, the heating water receiving unit and the heating medium oil receiving unit are provided with a heating water auxiliary heating means for previously or additionally raising the temperature of the heating water discharged to the heating pipe through the heating medium oil, so that the heating water discharged to the heating pipe is always It is possible to provide an effect capable of maintaining a heating temperature, that is, a high temperature.

In addition, electrical energy can be saved by using thermal oil as a heat source for additionally increasing the temperature of heating water. That is, heating water can be quickly heated with low power, thereby providing an effect of saving electrical energy.

1 is a schematic diagram showing a boiler apparatus using thermal oil having an auxiliary heating means according to a first embodiment of the present invention.
FIG. 2 is a perspective view illustrating a heating water distribution tank and a heating water heating pipe shown in FIG. 1;
3 is a schematic plan view showing the main tank shown in FIG. 1;
4 is a schematic cross-sectional view showing the heat exchange tube shown in FIG. 1;
5 is a schematic cross-sectional view showing the thermal oil inlet pipe shown in FIG. 1;
6 is a schematic cross-sectional view showing another embodiment of the heat exchange tube shown in FIG. 1;
7 is a schematic diagram illustrating a state in which an auxiliary heater is provided in the heat exchange tube shown in FIG. 1;
8 is a schematic diagram showing a boiler apparatus using thermal oil having an auxiliary heating means according to a second embodiment of the present invention.
9 is a schematic diagram showing a boiler apparatus using thermal oil having auxiliary heating means according to a third embodiment of the present invention.
10 is a schematic diagram showing a boiler apparatus using thermal oil having auxiliary heating means according to a fourth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

Also, terms used in this specification are for describing embodiments and are not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. The terms 'comprises' and/or 'comprising' used in the specification do not exclude the presence or addition of one or more other elements.

In addition, it should be understood that when an element is referred to as being “connected” to another element, it may be directly connected to the other element, but another element may exist in the middle. On the other hand, when an element is referred to as being “directly connected” to another element, it should be understood that no intervening elements exist.

Among the accompanying drawings, FIG. 1 is a schematic diagram showing a boiler apparatus using thermal oil having an auxiliary heating means according to a first embodiment of the present invention, and FIG. 2 is a heating water distribution tank and heating water heating shown in FIG. It is a perspective view showing the tube, and FIG. 3 is a schematic plan view showing the main tank shown in FIG. And, FIG. 4 is a schematic cross-sectional view showing the heat exchange pipe shown in FIG. 1, and FIG. 5 is a schematic cross-sectional view showing the thermal oil inlet pipe shown in FIG.

As shown in FIGS. 1 to 5, the boiler apparatus 10 using thermal oil having an auxiliary heating means according to the present invention has a heating water accommodating unit 26 and a thermal oil accommodating unit 24 as a thermal medium flow path. A heating water auxiliary heating means 60 is provided to increase the temperature of the heating water discharged through the heating pipe 14 in advance or additionally.

The boiler apparatus 10 includes a main tank 20 having a thermal oil accommodating portion 24 in which thermal oil is accommodated, a heating water accommodating portion 26 separated from the thermal oil accommodating portion 24, and a heating pipe. The heating water distribution tank 30 configured to temporarily stay in the heating water circulated in the heating space by (14), and the heating water distribution tank 30 made of a hollow shape and arranged vertically in the heat medium oil receiving part 24, respectively, and the lower part of the heating water distribution tank A plurality of heating water heating tubes 40 communicating with the heating water receiving portion 26 and communicating with the heating water receiving portion 26 at the upper end and heating the thermal oil accommodated in the thermal oil receiving portion 24 to heat each heating water heating pipe ( 40) and a heater 50 installed in the thermal oil accommodating part 24 to raise the temperature of the heating water passing through.

In addition, the main tank 20 is provided with a heating water auxiliary heating means 60. The heating water auxiliary heating means 60 has inlet holes 62A through which thermal oil is introduced, and includes a thermal oil inlet pipe 62 coupled while maintaining a distance from the surface of the heater 50 and coupled to the heater 50, and one end of the thermal medium A first thermal oil circulation pipe 64A connected to the oil inlet pipe 62 and the other end located in the heating water receiving portion 26, and one end located in the lower region of the thermal oil receiving portion 24 and the other end located in the heating water receiving portion 26 and a thermal oil circulation pipe 64 made up of a second thermal oil circulation pipe 64B located in the water receiving portion 26. In addition, it is made of a double hollow type, and a heating water discharge path 66A is formed in the center for the heating water accommodated in the heating water receiving part 26 to be discharged to the heating pipe 14, and the heating water passes through the outer side. A heat transfer oil circulation path 66B for heating the heating water passing through the discharge path 66A is formed, and one side of the heat transfer oil circulation path 66B is connected to the first heat transfer oil circulation pipe 64A and the other side is the second heat transfer oil circulation path 66B. It is connected to the heat medium oil circulation pipe 64B, and the heating water discharge path 66A includes a heat exchange pipe 66 connected to the heating pipe 14.

This will be described in more detail.

The main tank 20 has a hollow cylindrical or square tubular shape, and a dispersion tank accommodating portion 22 is provided at the inner lower portion separated from the thermal oil accommodating portion 24 by a first diaphragm 23, , In the middle portion, the thermal oil accommodating portion 24 is provided separated from the dispersion tank accommodating portion 22 and the heating water accommodating portion 26 by the first and second diaphragms 23 and 25. At this time, the dispersion tank accommodating portion 22, the thermal oil accommodating portion 24, and the heating water accommodating portion 26 may be configured to communicate with each other separately. However, in this embodiment, the structure divided by the first and second diaphragms 23 and 25 will be described as a standard. In addition, the heating water accommodating part 26 is provided in the upper part of the main tank 20 and is separated from the thermal oil accommodating part 24 by the second diaphragm 25.

The first and second diaphragms 23 and 25 are welded inside the main tank 20 so that thermal oil or heating water does not leak.

The heating water receiving part 26 provided on the upper part of the main tank 20 has a cover 26A for opening and closing. This opening and closing cover 26A is for maintenance, cleaning, and replenishment of the inside of the heating water accommodating part 26, and the heating water of each of the heating water distribution tank 30 and the first diaphragm 23 described above. It can be used when installing the heating tube 40 and the second diaphragm 25.

Thermal oil is accommodated in the thermal oil accommodating portion 24 and the heating water accommodating portion 26, and it is natural that a temperature sensor and a pressure sensor are installed, and a safety valve that opens when the pressure rises above a predetermined value is installed. .

The heating pipe 14 is piped in the heating space, and a circulation pump 12 for forcibly circulating heating water is installed. One or more circulation pumps 12 may be installed as needed.

The heating water distribution tank 30 is installed inside the distribution tank accommodating part 22, and is configured so that the heating water circulated through the heating space flows in through the heating pipe 14 and temporarily stays there, as shown in FIGS. 2 and 3. As shown. It is formed in a hollow square ring or circular ring shape with an empty space in the center so that the inflow heating water is distributed and moved to each heating water heating pipe 40 while circulating inside. That is, it is formed in a square ring or circular ring shape so that the heating water introduced into the heating water distribution tank 30 is distributed and moved to each heating water heating pipe 40 while circulating inside the heating water distribution tank 30. It will be.

Since the heating water distribution tank 30 is formed in a rectangular shape with an empty middle portion, the heating water flowing into the heating water distribution tank 30 can be distributed to each heating water heating pipe 40 installed at different locations.

At this time, the heating water distribution tank 30 may be configured in a circular shape.

The heating water heating pipe 40 is to independently heat the heating water distributed from the heating water distribution tank 30 and raise the temperature. The heating water heating pipe 40 is formed in a long tubular shape or cylindrical shape, and the heating water stored in the heating water distribution tank 30 is heated while moving to the heating water receiving unit 26. ) are installed vertically inside the The lower end of the heating water heating pipe 40 communicates with the heating water distribution tank 30 and the upper end communicates with the heating water receiving unit 26 .

The heating water heating tube 40 may be configured in a hollow cylindrical or polygonal tube shape, but in this embodiment, it will be described based on a cylindrical shape.

The heating water heating pipe 40 serves to move the heating water into the heating water receiving portion 26 while heating the internal heating water as the outer surface comes into contact with the thermal oil accommodated inside the thermal oil receiving portion 24 .

At this time, the inside of the heating water heating tube 40 is filled with a heat storage material 42 for providing resistance to the moving speed of the moving heating water and generating heat storage. Various materials may be used for the heat storage material 42 . The heating water heating pipe 40 of this structure is to allow the heating water to pass slowly through the heating water heating pipe 40 so that the heating water sufficiently rises in temperature, and also to rapidly increase the temperature by the heat storage of the heat storage material 42 It is to do.

In other words, if the heating water passes through the heating water heating pipe 40 quickly, the temperature rise by heating the thermal medium oil is not smoothly performed. It can be sufficiently heated by the heat transfer oil while passing slowly, and in addition, since the moving heating water is further heated by the heat storage of the heat storage material 42, the temperature rise rate is fast and it can be heated to a high temperature.

On the other hand, by slowing down the movement speed of the heating water moving from the heating water distribution tank 30 to the heating water receiving unit 26, the heating time by the thermal oil is lengthened, and the heating water heating pipe is widened to increase the contact area with the thermal oil. The diameter of the middle region is formed larger than the diameters of the lower and upper regions of (40). That is, as shown in FIG. 1, the cross-sectional area of the middle region of the heating water heating pipe 40 is formed larger than the cross-sectional area of the lower region or the upper region, so that the heating water introduced into the heating water heating pipe is larger than the lower region. While temporarily staying in the large middle region, it gradually moves to the heating water receiving part 26, and in this process, it is heated by the thermal oil for a sufficient time and in addition by the heat storage material 42, so that the heating water quickly reaches a predetermined temperature. be able to rise

The heating water heating pipe 40 is formed integrally, and the upper region and the lower region are integrally formed by pressing the upper region and the lower region from the outer four directions toward the inner center. This is to prevent leakage problems that may occur when configuring by assembling several parts. In addition, the upper and lower regions of the heating water heating pipe 40 are bonded to the second diaphragm 25 and the heating water distribution tank 30 forming the heating water receiving portion 26 by welding while maintaining airtightness. .

In this embodiment, the number of heating water heating pipes 40 is configured as 4 as shown in FIGS. 2 and 3, but it is not limited thereto and it is natural that a plurality of 2 or more may be configured.

The heater 50 heats the thermal oil accommodated in the thermal oil accommodating portion 24 and is installed inside the thermal oil accommodating portion 24 so that the heating water passing through each heating water heating tube 40 is indirectly heated to raise the temperature. It will be. The heater 50 is composed of a heating element or the like to convert electrical energy into thermal energy. The heater 50 may be configured in multiple numbers.

A heating water temperature sensor 70A is installed in the heating water accommodating part 26, and a thermal oil temperature sensor 70B is installed in the thermal oil accommodating part 24, respectively.

The heating water auxiliary heating means 60 is installed in the heating water accommodating part 26 and the thermal oil accommodating part 26 to increase the temperature of the heating water discharged to the heating pipe 14 through the thermal medium in advance or additionally.

The auxiliary heating means 60 for heating water has a plurality of inlet holes 62A through which the thermal oil flows, and maintains a distance from the surface of the heater 50 so as to enclose the heater 50 and combine the thermal oil inlet pipe. (62), the first thermal oil circulation pipe (64A), one end of which is connected to the thermal oil inlet pipe (62) and the other end is located in the heating water accommodating portion (26), and one end of the thermal oil accommodating portion (24). The second heat medium oil circulation pipe 64B located in the lower region and the other end located in the heating water receiving part 26, and the heating water accommodated in the heating water receiving part 26 in the center are made of a double hollow heating pipe 14 ) A heating water discharge path 66A for discharge to the center is formed, and a heat transfer oil circulation path 66B for passing the heat transfer oil is formed on the outside, and one side of the heat transfer oil circulation path 66B is a first heat transfer oil circulation pipe. (64A) and the other side is connected to the second thermal oil circulation pipe (64B), and the heating water outlet (66A) is configured to include a heat exchange pipe (66) connected to the heating pipe (14).

The thermal oil inlet pipe 62 is formed in a hollow shape in which a plurality of inlet holes 62A are formed so that the rod-shaped heater 50 passes therethrough. In particular, since the support ends are bent inside both ends, a space is formed between the outer circumferential surface of the heater 50 and the inner circumferential surface of the thermal oil inlet pipe 62 when the heater 50 is inserted into the inside. This space is for allowing the thermal oil to smoothly circulate through the first thermal oil circulation pipe 64A. Also, each of the inlet holes 62A is for allowing the thermal oil around the heater 50 and the thermal oil inlet pipe 62 to flow smoothly.

The first thermal oil circulation pipe 64A has one end connected to the middle portion of the thermal oil inlet pipe 62 in the thermal oil accommodating portion 24 and the other end located in the heating water accommodating portion 26.

The second thermal oil circulation pipe 64B has one end located within the heating water accommodating portion 26 and the other end located in a lower region of the thermal oil accommodating portion 24. In this way, the reason why the other end of the second thermal oil circulation pipe 64B is located in the lower region of the thermal oil accommodating portion 24 is that the thermal oil whose temperature is lowered while circulating through the heat exchange tube 66 is transferred to the thermal oil accommodating portion 24. This is to increase the temperature while circulating toward the lower part and rising again.

The first thermal oil circulation pipe 64A is opened when the temperature of the heating water in the heating water accommodating portion 26 is lower than the thermal oil temperature in the thermal oil accommodating portion 24, and when the heating water temperature and the thermal oil temperature are the same. An on-off valve 62B for closing in case is provided. The opening/closing operation of the opening/closing valve 62B is controlled by the control unit receiving the heating water and thermal oil temperature detection signals detected by the heating water temperature sensor 70A and the thermal oil temperature sensor 70B.

A thermal oil circulation pump P is provided in the first thermal oil circulation pipe 64A or the second thermal oil circulation pipe 64B to forcibly circulate the thermal oil at the same time as the opening/closing valve 62B is opened. In this embodiment, the thermal oil circulation pump P will be described based on what is provided in the second thermal oil circulation pipe 64B.

The above-described heat exchange pipe 66 is made of a double hollow type in which an inner pipe and an outer pipe are overlapped at intervals, and the heating water received in the heating water receiving portion 26 in the center, that is, the inner pipe, is transferred to the heating pipe 14. A heating water discharge path 66A communicating with the heating pipe 14 is formed in the center to be discharged, and a heat transfer oil circulation path 66B for passing the heat transfer oil is formed on the outside, that is, on the outer pipe. One side of the thermal oil circulation path 66B formed in the outer tube is connected to the first thermal oil circulation tube 64A, and the other side is connected to the second thermal oil circulation tube 64B. Therefore, the thermal oil introduced into the thermal oil inlet pipe 62 is heat-exchanged while circulating through the first thermal oil circulation pipe 64A, the thermal oil circulation passage 66B, and the second thermal oil circulation pipe 64B in turn, and then heat medium again. It flows into the oil receiving portion 24.

At this time, although not shown in the drawing, a plurality of heat exchange fins may be protrudingly formed on the inner circumferential surface of the heating water discharge path 66A, that is, on the inner circumferential surface or outer circumferential surface of the inner tube to improve heat exchange with the thermal oil. The inner tube may be formed corrugated to enlarge the contact surface area.

On the other hand, the heat exchange pipe 66 described above is shown as a straight line in this embodiment, but is not limited thereto, and the heat transfer oil circulating through the heat transfer oil circulation path 66B and the heating water passing through the heating water discharge path 66A It may be formed in a curved shape or a circular shape so that heat exchange is performed smoothly over a sufficient period of time.

The operation of the boiler apparatus 10 using the thermal oil having the auxiliary heating means configured as described above will be described.

When power is applied to the heater 50 installed in the thermal oil accommodating portion 24, the temperature of the thermal oil rises to a predetermined temperature. With the temperature of the thermal oil rising, the heating water circulated through the heating pipe 14 is introduced into the heating water distribution tank 30 installed inside the distribution tank accommodating part 22, and then the inside of the heating water distribution tank 30 cycle

The heating water introduced into the heating water distribution tank 30 and circulated is dispersed to each heating water heating pipe 40 installed vertically and moves upward. That is, the heating water is dispersed and introduced into each heating water heating pipe 40 installed vertically in each flow path formation region of the heating water distribution tank 30.

The moving heating water dispersed and introduced into each heating water heating tube 40 is heated while moving toward the heating water receiving unit 26 by the structure of the heating water heating tube 40 and the heat storage material 42, and the temperature is raised. do.

At this time, since the heat storage material 42 is filled inside the heating water heating pipe 40 and the upper region is formed narrowly with a smaller cross section than the middle region, the time for the heating water to stay in the heating water heating pipe 40, that is, the heating The time to pass through the water heating pipe 40 is delayed, so that the temperature can be sufficiently raised by the heat storage of the heat storage material 42 and the heating by the thermal oil.

In addition, the heating water circulating through the heating pipe 14 is not moved to one heating water heating pipe 40 at once, but is dispersed and moved to each heating water heating pipe 40 by the heating water distribution tank 30 By being heated independently of each other, it is possible to quickly raise the temperature of a large amount of heating water to a predetermined temperature.

While passing through each heating water heating pipe 40, the heating water heated to a predetermined temperature by being heated by the thermal storage material 42 and the thermal oil accommodated in the thermal oil accommodating portion 24 moved to the heating water accommodating portion 26. After a temporary stay

The heating water temporarily staying in the heating water receiving unit 26 is circulated back to the heating pipe 14 by the circulation pump 12 .

In this way, the heating water whose temperature is lowered while circulating through the heating pipe 14 is dispersed and moved to a plurality of heating water heating tubes 40 by the heating water dispersion tank 30, respectively, inside each heating water heating tube 40. Since the temperature is raised by being indirectly heated by the thermal oil independently, the time required to raise the temperature to a predetermined temperature can be shortened, so that power can be saved. That is, when the same amount of heating water is heated up to a predetermined temperature, compared to the case where the heating water is moved at once and the temperature is raised, as in the present invention, the heating water is dispersed in small amounts and heated independently in different places. It is possible to raise the temperature more quickly, and thus energy can be saved.

On the other hand, when the heating water temperature of the heating water receiving part 26 detected by the heating water temperature sensor 70A is lower than the thermal oil temperature detected by the thermal oil temperature sensor 70B, the aforementioned heating water auxiliary heating means (60) works. That is, the heating water auxiliary heating means 60 is operated when the difference between the temperature of the heating water and the temperature of the thermal oil is low beyond the set deviation range.

An operation process of the heating water auxiliary heating means 60 will be described.

The control unit receiving the heating water temperature signal of the heating water receiving unit 26 detected by the heating water temperature sensor 70A and the thermal oil temperature detection signal detected by the thermal oil temperature sensor 70B, the temperature of the heating water When is out of the set deviation range and is lower than the temperature of the thermal oil, the opening/closing valve 62B provided in the first thermal oil circulation pipe 64A is opened and the thermal oil circulation pump provided in the second thermal oil circulation pipe 64B Activate (P).

In this operation, the thermal oil around the thermal oil inlet pipe 62 surrounding the heater 50 passes through the inlet holes 62A in a state of being heated by the heater 50 through the first thermal oil circulation pipe 64A. After circulating, it flows into the inlet of the thermal oil circulation path 66B of the heat exchange pipe 66.

In other words, when power is applied to the heater 50, the thermal oil around the heater 50 is heated most quickly and to the highest temperature. Therefore, when the opening/closing valve 62B is opened and the thermal oil circulation pump P is operated, the heated thermal oil around the heater 50 flows into the first thermal oil circulation pipe 64A through each inlet hole 62A. After being circulated, it flows into the inlet of the thermal oil circulation path 66B of the heat exchange pipe 66.

A portion of the thermal oil heated by the heater 50 flows into the thermal oil circulation path 66B and then moves (circulates) toward the opposite outlet side to heat the heating water passing through the heating water discharge path 66A. That is, the high-temperature thermal oil circulating through the thermal oil circulation path 66B and the relatively low-temperature heating water passing through the heating water discharge path 66A heat-exchange to raise the temperature of the heating water to a high temperature.

In this way, when the temperature of the heating water accommodated in the heating water receiving portion 26 is lower than the thermal oil temperature, the opening/closing valve 62B opens the first thermal oil circulation pipe 64A and the thermal oil circulation pump P As a result of the operation, the temperature of the heating water discharged to the heating pipe 14 is reduced by heating the heating water discharge path 66A while being heated to a high temperature and circulating directly into the heating medium oil circulation path 66B. It can be raised to a higher temperature than the heating water outside the furnace 66A.

In other words, when the heating water discharged to the heating pipe 14 through the heating water discharge path 66A passes through the heating water discharge path 66A, the high-temperature thermal oil circulating through the heat transfer oil circulation path 66B is transferred to the heat exchange pipe. Since the inner pipe (the pipe forming the heating water discharge path) of (66) is heated, the temperature can be raised.

Among the accompanying drawings, FIG. 6 is a schematic cross-sectional view showing another embodiment of the heat exchange tube shown in FIG. 1 .

As shown in FIG. 6, in the boiler apparatus 10 using thermal oil having an auxiliary heating means according to another embodiment, the heating water around the external tube is in the outer tube of the heat exchange tube 66, and the thermal oil circulation path 66B It is the same as the above-described embodiment except that a plurality of heating water inlet holes 66C for flowing into the heating water discharge path 66A through ) are formed. Since the heating water inlet holes 66C are formed in the outer pipe, the heating water around the heat exchange pipe 66 can smoothly flow into the heating water outlet 66A.

FIG. 7 is a schematic diagram illustrating a state in which an auxiliary heater is provided in the heat exchange tube shown in FIG. 1 .

As shown in FIG. 7, the boiler apparatus 10 using thermal oil having an auxiliary heating means according to another embodiment includes an auxiliary heater 52 for selectively heating heating water in a heat exchange pipe 66. It is the same as the above-described embodiment except that it is. This auxiliary heater 52 may be provided in the heat medium oil circulation passage 66B, may be provided in the heating water discharge passage 66A, or may be provided by being wound around the outer tube of the heat exchange pipe 66. Since the auxiliary heater 52 is provided in the heat exchange tube 66, heating water can be quickly heated when the boiler apparatus 10 is initially driven.

Among the accompanying drawings, FIG. 8 is a schematic diagram showing a boiler apparatus using thermal oil having auxiliary heating means according to a second embodiment of the present invention.

As shown in FIG. 8, the boiler apparatus 10 using thermal oil having an auxiliary heating means according to the second embodiment has an inlet 220 connected to a heating pipe 14B so that heating water circulated in a heating space flows in. ), and a main tank 20 connected to the heating pipe 14A, having an outlet 230 through which heating water is discharged, and forming a thermal oil accommodating portion 24 in which thermal oil and heat storage material are accommodated. In addition, the heating water circulated in the heating space by the heating pipes 14A and 14B is introduced and circulated in the thermal oil accommodating portion 24 to be heated by heat exchange with the thermal oil and then circulated back to the heating space. 24) includes a heating water heating pipe 300 installed inside. In addition, a heater 50 installed in the thermal oil accommodating portion 24 is included to increase the temperature of the heating water passing through the heating water heating tube 300 by heating the thermal oil accommodated in the thermal oil accommodating portion 24 .

This will be described in more detail.

The main tank 20 forms a space for accommodating the heat storage material and thermal oil, and forms a thermal oil accommodating portion 24 for accommodating the heater 50, other temperature sensors, and the heating water heating pipe 300. And, the upper part can be provided with a lid that can maintain the inside. Of course, the lid is configured to be opened only when necessary. In the heat medium oil accommodation space 24 of the main tank 20, an inlet 220 connected to the heating pipe 14B is connected to the heating pipe 14B so that the heating water circulated in the heating space flows, and the heating pipe 14A is connected to discharge the heating water. Discharge ports 230 are provided respectively.

The heating water heating pipe 300 has a thermal oil receiving part 24 so that the heating water introduced into the inlet 220 is circulated and heated by heat exchange with the thermal oil, and then circulated back to the heating space and then discharged through the outlet 230. installed inside the The heating water heating pipe 300 may be made of a copper pipe having excellent heat conduction.

In addition, the heating water heating pipe 300 is bent multiple times (in a zigzag shape) and disposed inside the thermal oil accommodating portion 24 .

The heating water heating pipe 300 is provided with a heating water auxiliary heating means for efficiently raising the temperature of the heating water discharged through the discharge port 230 . The heating water auxiliary heating means expands the heat exchange area of the heating water heating pipe 300 so that heat exchange of the heating water with a low temperature is performed by circulating the heating space with the thermal oil heated by the heater 50. It consists of a plurality of heat exchange fins 320 attached to the outer surface of (300). These heat exchange fins 320 may also be made of copper, aluminum, or an alloy having high thermal conductivity.

Inside the thermal oil accommodating part 24, a hot water heating pipe 400 coupled to the heating water heating pipe 300 at a distance is provided by heat exchange fins 320. This hot water heating 400 may be optionally provided. The material of the hot water heating pipe 400 is the same as the heating water heating pipe 300.

In addition, the heating water heating pipe 300, the hot water heating pipe 400, and the heat exchange fins 320 form one heat exchange module M. As shown in FIG. 9 , 1 to 4 heat exchange modules M are disposed in parallel or in series.

Since one or more heat exchange modules M are configured, the heating water passing through the heating water heating pipe 300 of each heat exchange module M can be rapidly raised to a higher temperature.

On the other hand, in the inlet 220 and the outlet 230, when the temperature of the heating water discharged to the outlet 230 is lower than the set temperature, recirculation for recirculating some or all of the heating water back to the inlet 22. Means 500 are provided.

The recirculation means 500 is connected to the inlet 220-side heating pipe 14B and connected to the inlet 220-side heating water heating pipe 300A, and the inlet multi-way valve 510 installed at the inlet 220 and , Discharge temperature detection for detecting the temperature of the heating water that is connected to the outlet 230 side heating pipe 14A and connected to the outlet 230 side heating water heating pipe 300B and has passed through the heating water heating pipe 300 A discharge multi-way valve 520 equipped with a sensor 522 and installed at the outlet 230, one end connected to the inflow multi-way valve 510, and the other end provided with a recirculation opening/closing valve 532 to discharge multi-way It consists of a recirculation pipe 530 connected to the valve 520.

At this time, a pump 534 for recirculating heating water may be installed in the recirculation pipe 530 on the outlet 230 side. In addition, a heating water discharge opening/closing valve 540 for opening and closing the discharged heating water is installed in the heating pipe 14A of the outlet 230. The heating water discharge opening/closing valve 540 may be operated to block all or part of the heating pipe 14A.

With this configuration, when the temperature of the heating water discharged through the outlet 230 detected by the discharge temperature detection sensor 522 is lower than the set temperature, the control unit opens the recirculation opening/closing valve 532 to open a part of the heating water or All of them are recirculated back to the inlet 22 through the recirculation pipe 530. At this time, the heating water discharge opening/closing valve 540 is completely opened or partially opened as needed. This is to recirculate all or part of the heating water.

As described above, when the temperature of the heating water discharged through the outlet 230 is lower than the set temperature, the heating water is recirculated so that the heating water finally discharged to the heating pipe 14A through the outlet 230 is at the set temperature. It can be discharged in an elevated temperature.

Meanwhile, among the accompanying drawings, FIG. 10 is a schematic diagram showing a boiler apparatus using thermal oil having auxiliary heating means according to a fourth embodiment of the present invention.

As shown in FIG. 10, the heating water heating pipe 300 is the same as the above-described embodiment except that it is configured in plurality. By configuring a plurality of heating water heating tubes 300 as described above, the heating water capacity can be increased, and by dividing the heating water into each heating water heating tube 300 and increasing the temperature, the temperature raising efficiency of the heating water can be remarkably increased.

As described above, when the temperature of the heating water accommodated in the heating water receiving unit 26 is lower than the set temperature, the above-described auxiliary heating water heating means 60 is operated or the heating water heating pipe 300 has a heat exchange structure. As a result, the temperature of the heating water circulating in the heating space can be quickly raised to a desired heating water temperature, and energy saving as well as heating efficiency can be remarkably improved.

In the foregoing, although specific embodiments of the present invention have been described and shown, the present invention is not limited to the described embodiments, and it is common knowledge in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and modified embodiments should fall within the scope of the claims of the present invention.

10: thermal oil boiler 12, P: circulation pump
14: heating pipe 20: main tank
30: heating water distribution tank 40,300: heating water heating pipe
50: heater 60: heating water auxiliary heating means
62: thermal oil inlet pipe 64A: first thermal oil circulation pipe
64B: first thermal oil circulation pipe 66: heat exchange pipe
66A: heating water discharge path 66B: heat transfer oil circulation path
66C: Heat transfer oil inlet hole 70A: Heating water temperature sensor
70B: Thermal oil temperature sensor 500: Recirculation means

Claims (10)

A main tank having a thermal oil accommodating portion accommodating thermal oil and a heating water accommodating portion distinct from the thermal oil accommodating portion; A heating water distribution tank configured to temporarily stay in the heating water circulating in the heating space by the heating pipe; a plurality of heating water heating pipes having a hollow shape and being vertically disposed in the heat medium oil accommodating part, having a lower end communicating with the heating water distribution tank, and an upper end communicating with the heating water accommodating part; And a heater installed in the thermal medium oil accommodating portion to heat the thermal oil accommodated in the thermal medium oil accommodating portion to raise the temperature of the heating water passing through each heating water heating tube,
The heating water accommodating part and the thermal medium oil accommodating part are provided with heating water auxiliary heating means for previously or additionally increasing the temperature of the heating water discharged to the heating pipe through the thermal medium oil,
The heating water auxiliary heating means,
a thermal oil inlet pipe provided with inlet holes through which thermal oil is introduced and coupled while maintaining a distance from the surface of the heater;
a first thermal oil circulation pipe having one end connected to the thermal oil inlet pipe and the other end located in the heating water receiving part;
a second thermal oil circulation pipe having one end located in a lower region of the thermal oil accommodating unit and the other end located in the heating water accommodating unit; and
It is made of a double hollow type, and a heating water discharge path for discharging the heating water accommodated in the heating water receiving unit to the heating pipe is formed in the center, and a heat transfer oil circulation path for passing the heat transfer oil is formed on the outside, and the heat transfer oil One side of the circulation passage is connected to the first thermal oil circulation pipe and the other side is connected to the second thermal oil circulation pipe, and the heating water outlet is made of a heat exchange pipe connected to the heating pipe,
In the first thermal oil circulation pipe,
An on-off valve is provided to open when the heating water temperature of the heating water accommodating part is lower than the thermal oil temperature of the thermal medium oil accommodating part, and to close when the heating water temperature and the thermal medium oil temperature are the same. Characterized in that,
Boiler device using thermal oil with auxiliary heating means. According to claim 1,
In the heating water accommodating portion and the thermal oil accommodating portion,
Characterized in that a heating water temperature sensor and a thermal oil temperature sensor for detecting the temperature of the heating water accommodated in the heating water receiving unit are provided, respectively.
Boiler device using thermal oil with auxiliary heating means. According to claim 2,
In the heat exchange tube,
Characterized in that an auxiliary heater for selectively heating the heating water is provided,
Boiler device using thermal oil with auxiliary heating means. According to claim 1,
In the heat exchange tube,
Characterized in that a plurality of heating water inlet holes are formed for the heating water to pass through the heat medium oil circulation path and flow into the heating water discharge path.
Boiler device using thermal oil with auxiliary heating means. delete According to claim 1,
In the first thermal oil circulation pipe or the second thermal oil circulation pipe,
Characterized in that a thermal oil circulation pump is provided for circulating the thermal oil when the opening/closing valve is opened.
Boiler device using thermal oil with auxiliary heating means.


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