KR20220018207A - Gas engine heatpump - Google Patents

Abstract

The present invention relates to a gas engine heat pump. The gas engine heat pump includes: an engine combustion mixture gas of fuel and air; a compressor receiving motive power from the engine to compress a refrigerant; an exhaust gas heat exchanger exchanging heat between coolant and exhaust gas discharged from the engine; a coolant pump circulating the coolant; a gas-liquid separator receiving the coolant having passed through the exhaust gas heat exchanger, and then, and separating the coolant into gasified coolant and liquefied coolant to store the liquefied coolant therein while discharging the gasified coolant to the outside; and an exhaust case receiving the exhaust gas having passed through the exhaust gas heat exchanger to discharge the gas to the outside. In the exhaust case, the gas-liquid separator is installed to form a space, through which the exhaust gas passes, between the gas-liquid separator and the exhaust gas, and an opening is formed on an upper side of the gas-liquid separator to discharge the gasified coolant and the exhaust gas at the same time.

Description

Gas engine heat pump {GAS ENGINE HEATPUMP}

The present invention relates to a gas engine heat pump, and more particularly, to a gas engine heat pump in which a device for separating and discharging air bubbles contained in cooling water and a device for discharging exhaust gas are integrated.

In general, a heat pump refers to a device that cools and cools a room through the process of compression, condensation, expansion, and evaporation of a refrigerant. When cooling the room, the indoor heat exchanger may function as an evaporator through which a low-temperature and low-pressure refrigerant passes, and the outdoor heat exchanger may function as a condenser through which a high-temperature and high-pressure refrigerant passes. Conversely, when heating the room, the indoor heat exchanger may function as a condenser, and the outdoor heat exchanger may function as an evaporator.

The heat pump is composed of an electric heat pump (EHP) that drives a compressor using an electric motor, and a gas engine heat pump (GHP) that drives the compressor using combustion energy of fuel gas. can be largely distinguished.

1 and 2 show a schematic configuration of a conventional gas engine heat pump.

1 and 2 , in a gas engine heat pump, air and fuel may be mixed in a mixer 1 and introduced into the engine 2 as a mixer. At this time, in the process before the mixture is introduced into the engine 2, an air cleaner (not shown), a zero governor (not shown), a supercharger (not shown) or a turbocharger (not shown), a throttle valve (not shown) and an intake manifold (not shown). Thermal energy generated according to the combustion reaction of the mixer in the engine 2 may be converted into mechanical energy to drive a compressor (not shown).

On the other hand, the exhaust gas generated according to the combustion reaction of the mixer in the engine 2 passes through the exhaust manifold 2a and then passes through the exhaust gas heat exchanger 3 and a muffler (not shown) to pass through the exhaust tower 4 It can be discharged to the outside of the gas engine heat pump through the In addition, condensed water generated in the process of exhausting the exhaust gas may be discharged to the outside after being purified by a drain filter (not shown).

At this time, in order to lower the temperature of the exhaust gas discharged and to recover and utilize waste heat, the exhaust gas and cooling water may exchange heat in the exhaust gas heat exchanger 3 . The cooling water may be injected and stored in the cooling water auxiliary tank 7 and circulated by the cooling water pump P.

The coolant flowing by the coolant pump (P) passes through the exhaust gas heat exchanger (3) and flows into the engine (2) to prevent overheating of the engine (2) and consequent damage or performance degradation, and to recover waste heat. can At this time, by controlling the opening of the valves (Va, Vb) to cool the room, the cooling water flows into the outdoor heat exchanger (6) to dissipate heat, and when heating the room, the cooling water is transferred to the indoor heat exchanger ( 5) and can exchange heat with the refrigerant.

On the other hand, in the case of a general gas engine heat pump as in the prior art, an air layer remains in the cooling water piping line, and a certain amount of air is also introduced in the process of injecting the cooling water into the cooling water auxiliary tank 7 , so that the air layer in the cooling water is in the form of bubbles. will remain as When the coolant containing bubbles is circulated, there is a problem affecting the reliability of the engine, such as a decrease in the efficiency of the heat exchanger.

In order to solve this problem, in the conventional case, air bubbles are discharged through a bubble removal operation in which the stopper of the cooling water auxiliary tank 7 is opened during a test run after the cooling water is injected. And, the coolant mixed with bubbles during coolant circulation flows to the coolant auxiliary tank 7 through the exhaust manifold 2a before flowing into the engine 2, and opens and closes according to the pressure of the bubbles to release the bubbles to the outside. The discharged cooling water cap (8) was connected to the cooling water auxiliary tank (7) to discharge the remaining air bubbles.

However, since the gas is not separated from the cooling water and the mixed fluid containing the gas contained in the cooling water, bubbles that are not discharged to the outside during the bubble removal operation remain in the cooling water, the structure of the piping line is complicated, and the cooling water auxiliary tank ( 7) and the cooling water cap (8) are far apart, so there is a problem that air bubbles above a certain level are not well discharged.

In addition, the configuration of the exhaust tower 4 for discharging exhaust gas to the outside, the cooling water auxiliary tank 7 for discharging air bubbles to the outside, and the cooling water cap 8 are structurally separated, which complicates the manufacturing process and increases the material cost. There is a problem that causes

In addition, in the process of discharging air bubbles to the cooling water cap 8 while the cooling water stored in the cooling water auxiliary tank 7 flows, a small amount of cooling water and air bubbles may leak through the gap between the stoppers of the cooling water auxiliary tank 7 . Such cooling water is accumulated in the upper chamber, and some of it is sprayed and deposited on the heat exchanger, thereby reducing the efficiency of the heat exchanger.

Domestic Patent Publication No. 10-0495630 (Registration Date: June 07, 2005)

The problem to be solved by the present invention is to solve the above problems.

Another object of the present invention is to integrate a structure for discharging exhaust gas to the outside and a structure for discharging air bubbles contained in cooling water to the outside, and a gas engine for discharging the exhaust gas and cooling water bubbles to the outside through one exhaust passage module. to provide a heat pump.

Another object of the present invention is to provide a gas engine heat pump including a structure for efficiently separating coolant and gas from a mixed fluid including coolant and gas and discharging to the outside.

Another object of the present invention is to provide a gas engine heat pump including a structure in which coolant leaks from a structure serving as a coolant tank, but is not accumulated on the upper body or deposited in a heat exchanger.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a gas engine heat pump according to an embodiment of the present invention includes an engine for combusting a mixture of fuel and air, a compressor receiving power from the engine to compress a refrigerant, and from the engine. An exhaust gas heat exchanger for exchanging the discharged exhaust gas with cooling water, a cooling water pump for circulating the cooling water, and the cooling water passing through the exhaust gas heat exchanger flows in, and converting the flowed cooling water into gaseous cooling water and liquid cooling water Separately, the liquid cooling water is stored therein, and the gas-liquid cooling water includes a gas-liquid separation device for discharging to the outside, and an exhaust case receiving the exhaust gas passing through the exhaust gas heat exchanger and discharging to the outside.

At this time, in the exhaust case, the gas-liquid separation device is installed therein, a space through which the exhaust gas passes is formed between the gas-liquid separation device and the exhaust case, and an opening is formed at the upper side of the gas-liquid separation device to form the gas phase of cooling water and the exhaust gas may be discharged together.

The exhaust case may be formed with a condensed water outlet at the lower side of the gas-liquid separation device. Therefore, it is possible to discharge the condensed water generated in the exhaust gas discharge process. Even if the cooling water accommodated in the gas-liquid separation device leaks from between the gaps of the gas-liquid separation device, it is discharged through the condensate outlet, and the cooling water is accumulated in the upper chamber or deposited in the heat exchanger, thereby reducing heat exchange efficiency.

The gas engine heat pump may further include an exhaust cover surrounding an upper portion of the exhaust case and having an upper surface opened in a mesh shape. Accordingly, exhaust gas and gaseous cooling water can be discharged to the outside through the exhaust cover, and the gas-liquid separation device can be protected from the outside.

The gas-liquid separation device is formed in a hollow shape to accommodate the cooling water therein, to form a bubble outlet at an upper portion through which the cooling water in the gas phase is discharged, and is spaced apart from the inner circumferential surface of the exhaust case inward to form the space. It may further include a case.

The gas-liquid separation case may include a slit rib protruding in a radially outward direction from an outer circumferential surface of the gas-liquid separation case to an inner circumferential surface of the exhaust case, and having a plurality of slits formed along the circumferential direction.

The exhaust case may include a support rib that protrudes in a radially inward direction from an inner circumferential surface of the exhaust case and supports the rib.

The gas-liquid separation device may include a cooling water cap connected to the bubble outlet of the gas-liquid separation case and opened and closed according to pressure to discharge the cooling water in the gas phase to the outside.

The gas-liquid separation device may include a cone-shaped center body that is disposed inside the gas-liquid separation case, is opened up and down, and becomes narrower toward the bottom. At this time, the mixed fluid (cooling water) flowing into the gas-liquid separation device passes through the center body and causes a turning motion along the inner circumferential surface of the cone-shaped center body, and the cooling water and bubbles (liquid coolant and gaseous cooling water) can be effectively separated

The gas engine heat pump may further include a cooling water inlet pipe for introducing the cooling water that has passed through the exhaust gas heat exchanger into the gas-liquid separation device, wherein the cooling water inlet pipe extends from the inner upper portion of the center body in a circumferential direction to the mixed fluid By discharging, it is possible to accelerate the turning motion.

The gas-liquid separation device may include at least one first baffle plate disposed between the outside of the center body and the gas-liquid separation case and having a plurality of holes formed therein. As the baffle plate is disposed inside the gas-liquid separation device as in the present invention, the mixed fluid flowing into the gas-liquid separation device may collide with the baffle plate, and the flow rate of the mixed fluid is reduced while having different densities. Separation of cooling water and air bubbles may be facilitated.

and a cooling water discharge pipe connected to the gas-liquid separation device for discharging the liquid cooling water separated from the introduced cooling water, wherein the cooling water discharge pipe includes any one of a plurality of holes formed in the first baffle plate; It can be supported through the gas-liquid separation case.

The gas-liquid separation device may include at least one second baffle plate disposed inside the center body and having a plurality of holes formed therein.

The gas-liquid separation device may include at least one support wall that protrudes outward from the center body and extends in the vertical direction, and supports the center body.

The gas-liquid separation device is disposed between the outside of the center body and the gas-liquid separation case, and includes at least one first baffle plate having a plurality of holes, wherein the first baffle plate includes a slit into which the support wall is inserted. can be formed.

The support wall may be formed in plurality to be in contact with the inner circumferential surface of the gas-liquid separation case.

In the gas-liquid separation case, a coupling groove into which the support wall is inserted may be formed inside the gas-liquid separation case.

The details of other embodiments are included in the detailed description and drawings.

According to the gas engine heat pump of the present invention, there are one or more of the following effects.

First, by integrating the structure for discharging the exhaust gas to the outside and the structure for discharging the bubbles contained in the cooling water to the outside, it is possible to discharge the exhaust gas and the cooling water bubbles to the outside through one exhaust passage module, thereby eliminating unnecessary exhaust lines There is no need to form, the manufacturing method is simplified and manufacturing cost is reduced.

Second, there is an advantage in that liquid cooling water and gaseous cooling water can be efficiently separated from the mixed fluid containing cooling water and gas and discharged to the outside.

Third, even if liquid cooling water leaks from the gas-liquid separation device, there is an advantage that it can be discharged to the outside through the condensate outlet without being accumulated in the upper body or deposited in the heat exchanger.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims or the means of solving the problems.

1 is a schematic block diagram of a gas engine heat pump according to the prior art.
FIG. 2 is a perspective view illustrating an internal structure of the gas engine heat pump of FIG. 1 .
3 is a schematic block diagram of a gas engine heat pump according to an embodiment of the present invention.
4 is a perspective view illustrating an internal structure of the gas engine heat pump according to FIG. 3 .
5 is a perspective view illustrating an exhaust assembly according to an embodiment of the present invention.
6 is a perspective view showing the internal structure of the exhaust assembly of FIG. 5 and the flow of fluid.
7 is an exploded perspective view in which the structure of the exhaust assembly according to the embodiment of the present invention is disassembled.
8 is an exploded perspective view in which the structure of the gas-liquid separation device included in the exhaust assembly of the present invention is disassembled.
9 is a perspective view illustrating a baffle assembly, a coolant cap, and a pipe structure included in the gas-liquid separation device.
10 is a perspective view through the baffle assembly of FIG.
11 is a transmission side view showing the internal structure and the flow of fluid from the side of the exhaust assembly according to the embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between components and other components. Spatially relative terms should be understood as terms including different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and/or "comprising" means that a referenced component, step and/or action excludes the presence or addition of one or more other components, steps and/or actions. I never do that.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly defined in particular.

In the drawings, the thickness or size of each component is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. In addition, the size and area of each component do not fully reflect the actual size or area.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the case of FIGS. 1 and 2 , as described above, a description thereof will be omitted.

Hereinafter, a gas engine heat pump system according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4, but descriptions of the same contents as those of FIGS. 1 and 2 will be omitted.

A gas engine heat pump according to an embodiment of the present invention includes an engine 2 that burns a mixture of fuel and air, a compressor (not shown) that compresses a refrigerant by receiving power from the engine 2, and an engine ( 2) includes an exhaust gas heat exchanger 3 for exchanging the exhaust gas discharged from the exhaust gas and cooling water, and a cooling water pump P for circulating the cooling water.

The gas engine heat pump includes an exhaust assembly 100 . The coolant may be accommodated in the exhaust assembly 100 and circulate in the gas engine heat pump system by the coolant pump P. Then, the exhaust gas generated according to the combustion reaction of the mixer in the engine 2 exchanges heat with the coolant in the exhaust gas heat exchanger 3, and then passes through the exhaust assembly 100 through the exhaust gas inlet 23, can be discharged outside.

Cooling water heat-exchanged in the exhaust gas heat exchanger (3) recovers waste heat from the engine (2) by adjusting the opening degree of the valves (Va, Vb), and then circulates in the indoor heat exchanger (5) or the outdoor heat exchanger (6). can In addition, bubbles included in the cooling water may flow to the exhaust assembly 100 through the cooling water inlet pipe 3a through the exhaust manifold 2a in the form of a mixed fluid together with a small amount of cooling water.

At this time, the exhaust assembly 100 receives the cooling water introduced through the cooling water inlet pipe 3a, and the cooling water is circulated to the outdoor heat exchanger 6 or the indoor heat exchanger 5 through the cooling water discharge pipe 6a. can be Bubbles included in the cooling water may be separated from the cooling water and discharged to the outside through the exhaust assembly 100 .

For reference, in the following, the terms "cooling water" and "mixed fluid" are sometimes used without distinction, but "cooling water" flowing into the exhaust assembly 100 through the cooling water inlet pipe 3a refers to liquid coolant and gas It refers to the form of a mixed fluid in which the cooling water of In addition, the separated cooling water may be divided into liquid cooling water and gaseous cooling water, liquid cooling water is referred to as “cooling water”, and gaseous cooling water may be referred to as “gas” (or “bubbles”). . With respect to other references, those skilled in the art will be able to clearly distinguish between liquid cooling water and gaseous cooling water.

Hereinafter, with reference to FIGS. 5 and 6 , the exhaust assembly 100 according to an embodiment of the present invention receives the exhaust gas passing through the exhaust gas heat exchanger 3 and exhausts the exhaust case 20 and , the cooling water that has passed through the exhaust gas heat exchanger 3 is supplied and the introduced cooling water is separated into a gaseous cooling water and a liquid cooling water, the liquid cooling water is stored inside, and the gaseous cooling water is discharged to the outside. It includes a gas-liquid separation device (30). At this time, the cooling water supplied by the gas-liquid separation device from the exhaust gas heat exchanger 3 is a mixed fluid in which gaseous cooling water and liquid cooling water are mixed, and may contain cooling water, air bubbles and other gases contained in the cooling water. have.

The exhaust case 20 may be connected to the exhaust tower 4 (refer to FIG. 4 ) to introduce exhaust gas generated through the combustion process of the engine 2 . The exhaust case 20 is formed in a hollow, and the upper part is opened to discharge the introduced exhaust gas. For example, the exhaust case 20 may be formed in a cylindrical shape with an open top.

The exhaust case 20 may include an exhaust gas inlet 23 formed on one side of the exhaust case 20 to introduce exhaust gas into the exhaust case. The exhaust gas inlet 23 may be formed under the exhaust case 20 . The exhaust gas inlet 23 may communicate with the exhaust gas heat exchanger 3 and the exhaust tower 4 .

The exhaust case 20 may include a condensate outlet 25 formed on one side of the exhaust case 20 to discharge condensed water generated in the exhaust gas discharge process. The condensed water outlet 25 may be formed at a lower portion of the exhaust case 20 . The condensate outlet 25 may be located below the gas-liquid separation device 30 to be described later. Therefore, even if the cooling water accommodated in the gas-liquid separation device 30 leaks from between the gaps of the gas-liquid separation device 30, it is discharged through the condensed water outlet 25, and the cooling water is accumulated in the upper body or deposited in the heat exchanger to improve heat exchange efficiency. Dropping problems can be avoided.

A gas-liquid separation device 30 may be installed inside the exhaust case 20 . In addition, a space through which the exhaust gas passes may be formed between the gas-liquid separation device 30 and the exhaust case 20 . Specifically, the circumferential surface of the gas-liquid separation device 30 may be spaced apart from the inner circumferential surface of the exhaust case 20 inward to form a space through which the exhaust gas passes. At this time, since the upper portion of the exhaust case 20 is opened, the exhaust gas introduced into the exhaust case 20 through the exhaust gas inlet 23 is a space between the exhaust case 20 and the gas-liquid separator 30 . It may be discharged to the outside through the open upper part of the exhaust case 20 (see FIG. 11).

The gas-liquid separator 30 is connected to the cooling water inlet pipe 3a to receive and store the circulated cooling water, and is connected to the cooling water discharge pipe 6a to discharge the stored cooling water, so that the cooling water can be circulated again.

At this time, the cooling water may be introduced into the gas-liquid separation device 30 through the cooling water inlet pipe 3a in a state of a mixed fluid mixed with bubbles. The gas-liquid separator 30 may separate cooling water and air bubbles from the introduced mixed fluid. The separated bubble is a gas, and is discharged to the outside through the outlet 312 and/or the coolant cap 35 of the gas-liquid separation device 30 , and is discharged together with the exhaust gas through the open upper part of the exhaust case 20 , , the separated cooling water is stored and then flows to the indoor heat exchanger 5 or the outdoor heat exchanger 6 through the cooling water discharge pipe 6a by driving the cooling water pump P (refer to FIG. 11). That is, the gas-liquid separator 30 of the present invention can separate the cooling water in the gaseous and liquid phases while also serving as the conventional cooling water cap 8 and the cooling water auxiliary tank 7 .

On the other hand, the temperature of the exhaust gas discharged through heat exchange with the cooling water in the exhaust gas heat exchanger 3 is about 60 to 70 degrees, and indirectly comes into contact with the cooling water accommodated in the gas-liquid separation device 30, the indoor heat exchanger ( 5) or the radiator 6 side, the temperature of the coolant accommodated in the gas-liquid separation device 30 can be maintained constant at about 50 to 60 degrees, which has the advantage of increasing the reliability of the engine.

Meanwhile, the exhaust cover 10 may be detachably disposed on the exhaust case 20 . The exhaust cover 10 may cover the gas-liquid separation device 30 installed inside the exhaust case 20 to protect it from the outside. In addition, the gas-liquid separation device may be managed by detaching the exhaust cover 10 , or cooling water may be injected into the gas-liquid separation device 30 . The coolant may be injected into the gas-liquid separator 30 by opening the coolant cap 35 (refer to FIG. 7 ).

The exhaust cover 10 may surround an upper portion of the exhaust case 20, and an upper surface thereof may be opened in a mesh shape. The exhaust cover 10 may include a cylindrical cover body 11 surrounding the upper outer circumferential surface of the exhaust case 20 , and a cover hole 13 formed in a mesh shape to form a plurality of holes. The exhaust case 20 has an open upper end to communicate with the cover hole 13 , and the cooling water bubbles separated from the exhaust gas and the mixed gas may be discharged through the cover hole 13 .

Hereinafter, referring to FIG. 7 , a first cover groove 16 and a second cover groove 17 concave upwardly may be formed at the lower end of the cover body 11 . And on the upper end of the exhaust case 20, a first exhaust case groove 26 and a second exhaust case groove 27, which are recessed downward at positions corresponding to the first and second cover grooves 16 and 17. can be formed.

When the exhaust cover 10 is disposed on the upper portion of the exhaust case 20, the first cover groove 16 and the first exhaust case groove 26 form a hole through which the coolant discharge pipe 6a passes, and the second The cover groove 17 and the second exhaust case groove 27 may be formed with a hole through which the coolant inlet pipe 3a passes. The coolant inlet pipe 3a passes through the hole formed by the second cover groove 17 and the second exhaust case groove 27 to be connected to the gas-liquid separator 30, and the coolant outlet pipe 6a is connected to the first cover groove It may be connected to the gas-liquid separation device 30 through the hole formed by the 16 and the first exhaust case groove 26 .

Meanwhile, the gas-liquid separation device 30 may include gas-liquid separation cases 310 , 320 , 330 formed in a hollow shape to accommodate cooling water therein, and a bubble outlet 312 through which gas is discharged. The gas-liquid separation cases 310 , 320 , and 330 may be spaced apart from the inner circumferential surface of the exhaust case 20 to form a space through which the exhaust gas passes. The gas-liquid separation cases 310 , 320 , 330 may be formed in a cylindrical shape.

The cooling water inlet pipe 3a may penetrate a part of the gas-liquid separation case 310 , 320 , 330 , communicate with the inside of the gas-liquid separation case, and introduce a mixed fluid into the gas-liquid separation case. In addition, the cooling water discharge pipe 6a penetrates a part of the gas-liquid separation case 310 , 320 , 330 to communicate with the inside of the gas-liquid separation case, and may discharge the cooling water stored in the gas-liquid separation case to the outside.

The mixed fluid introduced into the gas-liquid separation device 30 is separated into cooling water and bubbles (gas) by the difference in density, and the gas is discharged through the bubble outlet 312 formed at the top of the gas-liquid separation cases 310, 320, 330. Discharged to the outside, the cooling water is stored in the lower portion of the gas-liquid separation case (310, 320, 330).

On the other hand, the gas-liquid separation case (310, 320, 330) is a slit rib 332 protruding radially outward from the outer circumferential surface of the gas-liquid separation case to the inner circumferential surface of the exhaust case, and in which a plurality of slits 333 are formed along the circumferential direction. ) may be included. The exhaust gas may pass through the slit 333 formed in the slit rib 332 and be discharged to the outside through the upper part of the exhaust case.

The gas-liquid separation cases 310 , 320 , 330 and the exhaust case 20 are formed in a cylindrical shape, and the slit ribs 332 are disposed in a spaced apart space to be supported and/or coupled by the exhaust case 20 . have. The exhaust case 20 may include a support rib 22 that protrudes in a radially inward direction from the inner circumferential surface of the exhaust case 20 and supports the slit rib 332 . In this case, the support ribs 22 may protrude at a predetermined interval so as not to block the slits 333 formed in the slit ribs 332 .

Meanwhile, the gas-liquid separator 30 may include a cooling water cap 35 that opens and closes according to the pressure of the bubbles to discharge the bubbles to the outside. The cooling water cap 35 may be coupled to the upper portion of the gas-liquid separation cases 310 , 320 , 330 . The inside of the cooling water cap 35 may include a pressure spring, a pressure valve, a vacuum spring, a vacuum valve, and a gasket.

More specifically, the cooling water cap 35 may be connected to the bubble outlet 312 formed on the upper portion of the gas-liquid separation cases 310 , 320 , 330 . At this time, when the mixed fluid flows into the gas-liquid separator 30 , the pressure inside the gas-liquid separator 30 increases, and accordingly, the coolant cap 35 may be opened. In addition, the gas separated from the mixed fluid may be discharged to the outside through the opening of the open coolant cap 35 .

The cooling water cap 35 of the present invention is directly connected to the bubble outlet 312 formed on the upper portion of the gas-liquid separation device 30, and the cooling water auxiliary tank 7 and the cooling water cap 8 are installed as separate components and spaced apart. Compared to the prior art, which can be opened and closed according to the internal pressure smoothly, the discharge efficiency of cooling water bubbles can be increased.

The cooling water cap 35 may have a first connecting pipe 6b connected to the cooling water discharge pipe 6a on one side thereof. Accordingly, the cooling water accompanying the gas discharged through the cooling water cap 35 may sequentially flow to the first connection pipe 6b and the cooling water discharge pipe 6a.

Hereinafter, referring to FIG. 8 , the gas-liquid separation cases 310 , 320 , and 330 may include an upper case 310 , a middle case 320 , and a lower case 330 that are sequentially arranged from the upper side to the lower side.

The upper case 310 may be formed in a cylindrical shape with an open lower portion and an upper portion covered. A bubble outlet 312 is formed in the upper portion of the upper case 310 to discharge the cooling water bubbles separated from the mixed fluid. In the upper case 310, two pipe insertion holes 314 are formed, and the second connection pipe 6c connected to the cooling water discharge pipe 6a and the cooling water inlet pipe 3a pass through the pipe insertion holes 314. to communicate with the inside of the gas-liquid separation device 30 .

Meanwhile, the cooling water cap 35 is disposed on the cap body 352 connected to the bubble outlet 312 and the cap body 352, and opens and closes the upper part of the cap body 352 by pressure ( 351) may be provided. General structures of the coolant cap 35 such as a spring, a valve, and a gasket may be accommodated in the cap body 352 . A first connecting pipe 6b is connected to one side of the cap body 352 so that the cooling water discharge pipe 6a and the cap body 352 may communicate with each other.

The cooling water discharge pipe 6a penetrates the first connecting pipe 6b connected to the cap body 352 side of the cooling water cap 35 and the pipe insertion hole 314 of the upper case 310 to form the gas-liquid separation device 30 . It may be branched into a second connecting pipe 6c connected to the inside. The second connection pipe 6c may extend adjacent to the bottom surface of the lower case 330 disposed at the lower end. The cooling water stored in the gas-liquid separation device 30 may flow into the second connection pipe 6c and flow to the cooling water discharge pipe 6a.

A middle case 320 may be coupled to a lower end of the upper case 310 , and a lower case 330 may be coupled to a lower end of the middle case 320 . The upper case 310 , the middle case 320 , and the lower case 330 are coupled to each other so as to be detachably manufactured, and the gas-liquid separation device 30 can be easily managed.

The middle case 320 may be formed in a ring shape in which upper and lower ends are opened. The lower case 330 is formed in a cylindrical shape with an open upper portion and a closed lower portion to accommodate cooling water. In addition, the above-described slit rib 332 may be formed along the outer circumferential surface at the upper end of the lower case 330 .

Meanwhile, the gas-liquid separation device 30 may include a baffle assembly 340 disposed inside the gas-liquid separation cases 310 , 320 , 330 . This will be described later with reference to FIGS. 9 and 10 .

Hereinafter, referring to FIGS. 8 to 10 , the baffle assembly 340 may include baffle plates 341 , 342 , 343 , and 344 having a plurality of holes formed therein. In addition, the baffle assembly 340 may include a center body 345 having a cylindrical shape that is located in the center of the baffle assembly 340 and opened up and down. In addition, a plurality of support walls 346 extending in the vertical direction and protruding outward from the center body 345 to support the baffle assembly 340 may be formed on the center body 345 .

The center body 345 is disposed inside the gas-liquid separation device 30 and may be located near the center. The center body 345 may be formed in a cone shape that becomes narrower from the upper side to the lower side. The cooling water inlet pipe 3a may discharge the mixed fluid to the inside of the center body 345 .

At this time, the mixed fluid flowing into the gas-liquid separation device 30 passes through the center body 345 and causes a turning motion along the inner circumferential surface of the cone-shaped center body 345, and the cooling water and the cooling water by the centrifugal force acting on the mixed fluid It is possible to effectively separate air bubbles (see FIG. 11 ).

The cooling water inlet pipe 3a may discharge the mixed fluid from the inner upper portion of the center body 345 in the circumferential direction to accelerate the turning movement. The end of the cooling water inlet pipe 3a extending into the upper case 310 may be bent in the circumferential direction at the inner upper portion of the center body 345 .

Meanwhile, the baffle assembly 340 may include at least one first baffle plate 341 , 342 disposed inside the gas-liquid separation cases 310 , 320 , 330 and having a plurality of holes formed therein. The first baffle plates 341 and 342 may be disposed in a space between the outside of the center body 345 and the gas-liquid separation cases 310 , 320 , 330 .

The first baffle plates 341 and 342 may include an upper first baffle plate 341 and a lower first baffle plate 342 disposed below the upper first baffle plate 342 . The number of the first baffle plates is not limited.

An opening (unsigned) corresponding to the shape of the outer peripheral surface of the center body 345 is formed in the center of the first baffle plates 341 and 342, and the center body ( 345) may be inserted. The center body 345 may be coupled through the upper first baffle plate 341 and the lower first baffle plate 342 . The center body 345 is formed in a cone shape that becomes narrower toward the bottom, and the opening (unsigned) formed in the upper first baffle plate 341 is the opening (unsigned) formed in the lower first baffle plate 342 . ) may be larger than the

As the speed of the mixed fluid increases, the possibility that the cooling water, air bubbles, and gases contained in the mixed fluid are not separated because they are entrained increases. As the baffle plate is disposed inside the gas-liquid separation device 30 as in the present invention, the mixed fluid flowing into the gas-liquid separation device 30 may collide with the baffle plate, and the flow rate of the mixed fluid may be reduced. As it is reduced, cooling water having different densities and air bubbles can be separated smoothly.

On the other hand, the cooling water discharge pipe (6a) passes through one side of the gas-liquid separation case 310 as described above (refer to FIG. 8) and extends into the gas-liquid separation case 310. A second connection pipe (6c) is connected. may include The second connection pipe 6c of the cooling water discharge pipe 6a passes through any one of a plurality of holes formed in the first baffle plates 341 and 342 to be supported by the first baffle plate and the gas-liquid separation case. can

For example, when the first baffle plates 341 and 342 include the first upper first baffle plate 341 and the lower first baffle plate 342 , the coolant discharge pipe 6a passes through the upper case 310 . and a second connection pipe 6c extending into the gas-liquid separation case includes any one of a plurality of holes formed in the upper first baffle plate 341 and a plurality of holes formed in the lower second baffle plate 342 . It may extend to a vicinity adjacent to the bottom surface of the lower case 330 through any one.

The second baffle plates 343 and 344 may be disposed inside the center body 345 to be in contact with the inner circumferential surface of the center body. The second baffle plates 343 and 344 include an upper second baffle plate 343 disposed inside the center body 345 and a lower side of the upper second baffle plate 343 inside the center body 345 . It may include a lower second baffle plate 344 disposed on the . The number of the second baffle plates 343 and 344 is not limited.

When the mixed fluid is discharged from the cooling water inlet pipe 3c into the gas-liquid separation device 30 , the flow rate is faster than the flow rate at which the bubbles are discharged to the outside through the cooling water cap 35 . That is, the diameter of each of the plurality of holes formed in the second baffle plates 343 and 344 may be designed to be smaller than the diameter of each of the plurality of holes formed in the first baffle plates 341 and 342 . Accordingly, the flow rate of the mixed fluid discharged from the cooling water inlet pipe 3c can be greatly reduced, and the flow of the gas discharged to the outside through the cooling water cap 35 can be smoothed.

And, in the case of the lower second baffle plate 344, an opening near the center of the lower second baffle plate 344 so as not to leak to the outside of the gas-liquid separator 30 due to an increase in the flow rate of the coolant that does not pass through the second baffle plates 343 and 344. 344a may be formed.

Meanwhile, the gas-liquid separation device 30 protrudes outward from the center body 345 and extends in the vertical direction, and may include at least one support wall 346 supporting the center body 345 . A plurality of the support walls 346 are arranged in the circumferential direction along the circumference of the center body 345 and may be rotated radially. In addition, the support wall 346 may be approximately equal to the height of the center body 345 .

The support wall 346 may be integrally formed with the center body 345 and support the first baffle plates 341 and 342 disposed outside the center body. The first baffle plates 341 and 342 have a slit (unsigned) into which the support wall 346 is inserted, and the support wall 346 has a slit (unsigned) formed in the first baffle plates 341 and 342 . may be inserted into and coupled to each other.

On the other hand, unlike shown, the support wall 346 protrudes from the center body 345 to the inner peripheral surface of the gas-liquid separation case (310, 320, 330) in the radially outward direction? can That is, the plurality of support walls 346 may be in contact with the inner peripheral surfaces of the gas-liquid separation cases 310 , 320 , 330 .

Accordingly, when manufacturing the gas-liquid separation device 30 , for example, the support wall 346 is inserted in contact with the inner circumferential surface of the lower case 330 , and the middle case 320 and the upper case 310 are sequentially inserted. Since it can be manufactured in such a way as to be placed in contact with the support wall 346 , the manufacturing method is simplified, and the baffle assembly 340 can be supported by the gas-liquid separation cases 310 , 320 , 330 . have.

Meanwhile, in the gas-liquid separation cases 310 , 320 , 330 , a coupling groove 326 into which the support wall 346 is inserted may be formed inside the gas-liquid separation case (see FIG. 8 ). The coupling groove 326 may be arranged in a circumferential direction on the inner circumferential surface of the gas-liquid separation case 310 , 320 , 330 at a position corresponding to the support wall 346 . The coupling groove 326 may have a concave groove cut so that the support wall 346 can be inserted, and may be formed in a “C” shape.

The coupling groove 326 may be formed in the middle case 320 . Accordingly, the coupling groove 326 and the support wall 346 formed in the middle case 320 are coupled to each other, and then the middle case 320 is coupled to the lower case 330 and the upper case 310 to separate gas and liquid. The device 30 can be manufactured simply.

A support member 336 may protrude from the bottom surface of the gas-liquid separation case 310 , 320 , 330 at a position corresponding to the support wall 346 (see FIG. 8 ). The support member 336 may be formed on the bottom surface of the lower case 330. Accordingly, the support member 336 supports the support wall 346 and the center body 345 of the baffle assembly 340. can be spaced apart from the bottom surface of the gas-liquid separation cases 310, 320, and 330. Therefore, the cooling water passing through the center body 345 through the hole formed at the bottom of the center body 345 is transferred to the gas-liquid separation device 30 ) to flow toward the bottom surface, and may be accommodated in the gas-liquid separation device 30 (see FIG. 11 ).

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and in the technical field to which the present invention belongs, without departing from the gist of the present invention as claimed in the claims Various modifications may be made by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

1: Mixer 2: Engine
2a: exhaust manifold 3: exhaust gas heat exchanger
3a: cooling water inlet pipe 4: exhaust tower
5: Indoor heat exchanger 6: Outdoor heat exchanger
6a: cooling water discharge pipe 6b: first connection pipe
6c: second connection pipe 7: coolant auxiliary tank
8: coolant cap P: coolant pump
Va: first valve Vb: second valve
10: exhaust cover 11: cover body
13: cover hole 16: first cover groove
17: second cover groove 20: exhaust case
21: exhaust case body 22: protrusion
23: exhaust gas inlet 25: condensate discharge pipe
26: first exhaust case groove 27: second exhaust case groove
30: gas-liquid separation device 310, 320, 330: gas-liquid separation case
310: upper case 312: air bubble outlet
314: tube insertion hole 320: middle case
326: coupling groove 330: lower case
332: rib 333: slit
336: support member 340: baffle assembly
341: upper first baffle plate 342: lower first baffle plate
343: upper second baffle plate 344: lower second baffle plate
344a: Hall 345: Center Body
346: support wall 350: coolant cap
351: cap cover 352: cap body

Claims (16)

an engine that burns a mixture of fuel and air;
a compressor receiving the power of the engine and compressing the refrigerant;
an exhaust gas heat exchanger for exchanging the exhaust gas discharged from the engine and cooling water;
a cooling water pump circulating the cooling water;
Gas-liquid separation in which the cooling water that has passed through the exhaust gas heat exchanger is introduced, and the introduced cooling water is separated into a gaseous cooling water and a liquid cooling water, the liquid cooling water is stored inside, and the gaseous cooling water is discharged to the outside Device; and
and an exhaust case for receiving the exhaust gas passing through the exhaust gas heat exchanger and discharging to the outside,
The exhaust case is
The gas-liquid separation device is installed therein so that a space through which the exhaust gas passes is formed between the gas-liquid separation device and the exhaust case, and an opening through which the gas-phase cooling water and the exhaust gas are discharged from the upper side of the gas-liquid separation device gas engine heat pump.
The method of claim 1,
The exhaust case is
A gas engine heat pump in which a condensate outlet is formed at the lower side of the gas-liquid separation device.
The method of claim 1,
The gas engine heat pump further comprising an exhaust cover surrounding the upper portion of the exhaust case and having an upper surface opened in a mesh shape.
The method of claim 1,
The gas-liquid separation device,
Gas further comprising a gas-liquid separation case formed in a hollow to accommodate the cooling water therein, forming a bubble outlet at an upper portion through which the gaseous cooling water is discharged, and spaced apart from the inner circumferential surface of the exhaust case inward to form the space engine heat pump.
5. The method of claim 4,
The gas-liquid separation case,
and a slit rib protruding radially outward from an outer circumferential surface of the gas-liquid separation case to an inner circumferential surface of the exhaust case and having a plurality of slits formed along the circumferential direction.
6. The method of claim 5,
The exhaust case is
and a support rib protruding radially inward from the inner circumferential surface of the exhaust case and supporting the slit rib.
5. The method of claim 4,
The gas-liquid separation device,
and a coolant cap connected to the bubble outlet of the gas-liquid separation case and opened and closed according to pressure to discharge the coolant in the gas phase to the outside.
5. The method of claim 4,
The gas-liquid separation device,
A gas engine heat pump disposed inside the gas-liquid separation case, the gas engine heat pump including a cone-shaped center body that is opened up and down and that is narrower toward the lower side.
9. The method of claim 8,
Further comprising a cooling water inlet pipe for introducing the cooling water that has passed through the exhaust gas heat exchanger into the gas-liquid separation device,
The coolant inlet pipe is a gas engine heat pump for discharging the coolant in a circumferential direction from an inner upper portion of the center body.
9. The method of claim 8,
The gas-liquid separation device,
A gas engine heat pump including at least one first baffle plate disposed between the outer circumferential surface of the center body and the gas-liquid separation case and having a plurality of holes formed therein.
11. The method of claim 10,
Further comprising a cooling water discharge pipe connected to the gas-liquid separation device for discharging the cooling water in the gas phase separated from the introduced cooling water,
The cooling water discharge pipe is
A gas engine heat pump supported through any one of a plurality of holes formed in the first baffle plate and the gas-liquid separation case.
9. The method of claim 8,
The gas-liquid separation device,
A gas engine heat pump disposed inside the center body and including at least one second baffle plate having a plurality of holes.
9. The method of claim 8,
The gas-liquid separation device,
The gas engine heat pump including at least one support wall protruding outwardly from the center body and extending in the vertical direction to support the center body.
14. The method of claim 13,
The gas-liquid separation device,
It is disposed between the outer circumferential surface of the center body and the gas-liquid separation case, and includes at least one first baffle plate having a plurality of holes formed therein;
The first baffle plate,
A gas engine heat pump having a slit into which the support wall is inserted.
14. The method of claim 13,
The support wall is
A gas engine heat pump formed in plurality and in contact with the inner circumferential surface of the gas-liquid separation case.
14. The method of claim 13,
The gas-liquid separation case,
A gas engine heat pump in which a coupling groove into which the support wall is inserted is formed inside the gas-liquid separation case.

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