KR20130088236A - Condesation-water outlet structure of sterling engine - Google Patents

Abstract

PURPOSE: A condensate water discharge structure of a stirling engine is provided to extend service life of a seal by preventing corrosion in the seal by directly discharging the condensate water through an outlet. CONSTITUTION: A condensate water discharge structure of a stirling engine comprises an engine bracket (430), a seal (20), and an outlet (30). The engine bracket wraps the upper circumference of a stirling engine (110). The seal wraps a part of a surface of the stirling engine with protecting the engine bracket, and the cross section is formed into Ω-shape. The outlet discharges condensate water with exhaust gas from the seal to outside.

Description

Condensation-water outlet structure of sterling engine

The present invention relates to a condensate discharge structure of the Stirling engine, specifically, when the return temperature of the Stirling engine m-CHP is low, the exhaust gas is condensed on the surface of the engine bracket, and condensate accumulates inside the seal. The present invention relates to a condensate discharge structure of a Stirling engine for protecting the seal from corrosion by discharging it.

With the recent interest in finding new energy sources, the importance of recovering and reusing the latent heat of low-temperature exhaust gas or cooling water, which can be said to occur in almost all fields of industry, is increasing.

The organic Rankine cycle is mainly applied to convert low temperature heat energy to high energy energy.

Such an organic Rankine cycle is a form of power cycle that makes it possible to obtain a shaft force with relatively high thermal efficiency even under low temperature heat source conditions by using an organic heating medium having a higher vapor pressure than water as a working fluid.

For example, known organic Rankine cycles are interconnected with independent components such as circulation pumps, turbines, condensers, and evaporators, causing the working fluid to expand in the turbine after it is vaporized in the evaporator, Which is then liquefied and then fed back to the evaporator by the pump.

However, since the known organic Rankine system is complex in structure, requires a large amount of organic heating medium, and precisely controls each element device, it is not easy to start and stop at present .

On the other hand, another example is a Stirling Engine, in which each component constituting a power cycle is assembled into one engine and uses a gas such as air as a working fluid, so that the device is very simple and easy to operate This provides the advantage.

In addition, since such a Stirling engine has the highest thermal efficiency among the power cycles, it is very simple in structure when compared with the conventional organic Rankine system in converting medium and low temperature thermal energy into power, while enabling a highly efficient conversion of energy . ≪ / RTI >

It will be described in more detail with respect to a small cogeneration generator having a Stirling engine configured as described above.

As shown in FIG. 1, the small cogeneration generator includes a housing 100, a sterling engine 110 is installed inside the housing 100, and an auxiliary boiler 200 is disposed above the sterling engine 110. Is installed.

At this time, the Stirling engine 110 is driven by a main boiler. When the engine burner 120 provided in the main boiler heats the engine head (not shown) of the Stirling engine 110, The working fluid is expanded and contracted by the temperature difference to produce an alternating current.

The auxiliary boiler 200 includes a sensible heat exchanger 210 and a latent heat exchanger 220 and produces hot water through heat exchange with high temperature supplied through the flat plate type burner.

In this case, the cooling water pipe 130 is passed through the Stirling engine 110 to cool the Stirling engine 110, and then the hot water produced in the latent heat heat exchanger (220) and the sensible heat exchanger (210).

As shown in FIGS. 2 and 3, the Stirling engine 110 provided with the small cogeneration generator includes an engine mounting bracket 400 having a cross-sectional shape of a '凹' type, and the engine mounting bracket 400. A fixing bracket 410 provided at a lower portion is fixed to the housing 100, and is provided between the engine mounting bracket 400 and the fixing bracket 410, but the engine mounting bracket 400 of the Stirling engine 110 is fixed to the housing 100. The upper part is penetrated through.

In addition, the spring 500 is coupled to each of the four corner regions of the engine mounting bracket 400 and the fixing bracket 410, the upper portion of the spring 500 to the engine mounting bracket 400, the lower portion of the fixing bracket ( Coupled to 410, the Stirling engine 110 is elastically supported. That is, the Stirling engine 110 is a structure supported by the spring 500 in the air floating state.

In addition, the Stirling engine 110 and the engine mounting bracket 400 is provided with an engine bracket 430 at the lower portion of the coupling portion and wrapped to seal the lower part of the engine bracket 430 and the surface of the Stirling engine 110. The shape of the cross section is combined with the seal 20 having an omega shape.

When the return temperature of the Stirling engine 110 Micro-CHP is low (below 30 ° C.) inside the seal 20, exhaust gas is condensed on the surface of the engine bracket 430, and condensed water flows into the seal 20. It is going to be.

The condensed water is acidic, and if the condensed water stays inside the seal 20 for a long time, the seal may be deteriorated and oxidized, and water may be leaked, thereby causing an electrical hazard such as a short circuit.

The present invention has been invented to solve the above-mentioned conventional problems, the condensate discharge structure of the sterling engine to form a discharge port to discharge the condensate to the outside of the seal surrounding the sterling engine to facilitate the discharge of the condensate The purpose is to provide.

The present invention for achieving the above technical problem is a small including a sterling engine that is heated by an engine burner to produce electricity, and an auxiliary boiler installed on top of the sterling engine and having a sensible heat exchanger and a latent heat exchanger to produce hot water In a cogeneration generator, an engine bracket provided to surround an upper circumference of the sterling engine; Covering a part of the surface of the Stirling engine while protecting the engine bracket, the seal having a cross-sectional shape of the X-shaped and outlet for discharging the condensed water condensate exhaust gas condensed inside the seal on the lower side of the seal It includes.

In one embodiment, the outlet further comprises a hose which is inserted into the outlet to guide the condensate accumulated in the seal into the trap for discharging the condensate of the auxiliary boiler and an inlet connected to the hose and formed in the trap. .

In one embodiment, the trap further includes a first level sensor on one side of the inlet to notify that the outlet is blocked when the condensate outlet is blocked on one side thereof.

According to the boiler condensate discharge structure of the present invention, the condensate can be discharged through the discharge port formed in the lower portion of the seal so that the acidic condensate can be discharged directly from the inside of the seal to prevent corrosion of the seal to extend the life of the seal. have.

In addition, when the discharged condensate is discharged through the trap is provided with a sensor for detecting when the discharge is not smooth it has the effect of inducing the smooth discharge of the condensate.

Figure 1 is a schematic diagram showing the exhaust process of the exhaust gas of the Stirling engine of a general small cogeneration generator.
FIG. 2 is a front view schematically showing the Stirling engine provided in FIG. 1.
3 is a partially enlarged view illustrating a coupling relationship between the Stirling engine, the engine bracket, and the seal of FIG. 2.
Figure 4 is a partially enlarged view showing the appearance of the condensate discharge structure of the Stirling engine of the present invention.
FIG. 5 is a view illustrating a trap connected to an outlet of the seal of FIG. 4.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the present invention, the condensate discharge structure of the Stirling engine of the present invention will be described in detail.

Prior to the description, the same reference numerals as in the prior art will be described. In addition, description of the same structure as a conventional structure is replaced by description of a conventional structure.

Figure 4 is a partially enlarged view showing the appearance of the condensate discharge structure of the Stirling engine of the present invention, Figure 5 is a view showing the appearance of a trap connected to the outlet of the seal of Figure 4 configured.

4 and 5, the condensate discharge structure of the Stirling engine of the present invention, the Stirling engine 110 is heated by an engine burner to produce electricity, and installed on top of the Stirling engine 110 and the sensible heat exchanger and In the small combined heat generator comprising a secondary boiler for producing hot water with a latent heat exchanger, the engine bracket 430 is provided to surround the upper circumference of the Stirling engine 110, and while protecting the engine bracket 430 A part of the surface of the Stirling engine 110, the seal 20 is formed in the shape of the cross-section and the condensate water exhaust gas condensed inside the seal 20 on the lower side of the seal 20 It is composed of a discharge port 30 to be discharged. A separate water jacket (not shown) is formed on the engine bracket 430 to protect the seal 20 from high temperature exhaust gas.

On the other hand, the seal 20 surrounding the Stirling engine 110 and the engine bracket 430 is in direct contact with the engine and the engine bracket 430, so if the return temperature of the Stirling engine 110 is low, hot exhaust gas condenses. As a result, condensation gas is generated, and in this case, condensate flows into the seal 20 along the surface of the engine bracket 430 and is accumulated. Therefore, the discharge port 30 is for discharging the condensed water to the outside.

Since the condensed water is acidic, if it is accumulated inside the seal 20 formed of silicon for a long time, the seal 20 may be corroded and cracks may be generated. Prevent risks from occurring.

On the other hand, the discharge port 30, the hose 22 and the hose 22 which is inserted into the discharge port 30 and guides the condensate accumulated in the seal 20 to be introduced into the trap 2 for discharging the condensate of the auxiliary boiler. ) May be further provided with an inlet 21 formed in the trap (2).

Therefore, the condensed water discharged through the outlet 30 is introduced through the hose 22 and the inlet portion 21 and then discharged through the trap 2.

The trap 2 has an inlet 40 through which the condensed water generated from the auxiliary boiler flows in an upper portion thereof, and an outlet 70 is formed in the lower portion thereof.

Meanwhile, the trap 2 may further include a first water level sensor 50 at one side of the inlet part 21 to notify that the outlet is blocked to the outside when the condensate outlet is blocked at one side thereof. The first water level sensor 50 serves to detect when the flow of condensed water in the seal 20 is not smooth or the outlet is clogged or when the water level is above a certain level.

In addition, a second level sensor 60 of the trap for detecting whether there is water in the trap 2 may be further provided outside the trap 2. The second water level sensor 60 prevents the combustion gas from flowing back when the water in the trap 2 evaporates because the trap 2 has no water or has not been used for a long time, thereby damaging the trap 2. It prevents it from becoming.

The embodiment of the condensate discharge structure of the Stirling engine of the present invention described above is merely exemplary, and those skilled in the art to which the present invention pertains may various modifications and other equivalent embodiments therefrom. You will know well. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

2: trap 20: seal
21: inlet 22: hose
30: outlet 40: inlet
50: first level sensor 60: second level sensor
100: housing 110: Stirling engine
111: engine heat exchanger 112: exhaust gas flow path
120: engine burner 400: engine mounting bracket
410: fixing bracket 430: engine bracket
500: spring

Claims (3)

In a small cogeneration machine including a stirling engine 110 heated by an engine burner to generate electricity, and an auxiliary boiler installed on the top of the stirling engine 110 and having a sensible heat exchanger and a latent heat exchanger to produce hot water.
An engine bracket 430 provided to surround an upper circumference of the sterling engine 110;
A seal 20 which covers a part of the surface of the Stirling engine 110 while protecting the engine bracket 430 and has a cross-sectional shape of a Ω shape.
Condensate discharge structure of the Stirling engine, characterized in that it comprises a discharge port 30 for discharging the condensed water exhaust gas condensed inside the seal 20 on the lower side of the seal (20). The method according to claim 1,
In the discharge port 30,
A hose 22 inserted into the outlet 30 to guide the condensed water accumulated in the seal 20 to the trap 2 for discharging the condensed water of the auxiliary boiler;
Condensate discharge structure of the Stirling engine, characterized in that it further comprises an inlet (21) connected to the hose (22) is formed in the trap (2). The method of claim 2,
In the trap 2,
Condensate discharge structure of the Stirling engine (1) characterized in that it further comprises a first water level sensor (50) on one side of the inlet (21) to inform that the outlet is blocked when the condensate outlet is blocked on one side.

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