KR102407648B1 - Air Conditioner - Google Patents

Abstract

The present invention relates to an air conditioner, and more particularly, to an air conditioner including a compressor driven by an engine. To this end, a compressor for compressing the refrigerant, an engine for driving the compressor, a first outdoor unit including a case forming a space in which the compressor and the engine are disposed, and an outdoor heat exchanger for exchanging the refrigerant with the outside. An air conditioner including a second outdoor unit, wherein the case comprises: a peripheral panel for forming an inlet through which air is introduced at a lower side of the engine and covering the circumference; an upper plate disposed on the open upper side of the peripheral panel, disposed on the upper side of the engine, and forming a heat sink through which air is discharged; and a loop disposed above the upper plate and covering the heat sink, wherein the loop covers the entire heat sink when viewed from the top, and at least one side perpendicular to the vertical direction is opened to form a roof opening portion.
In the outdoor unit, the present invention has the advantage of effectively dissipating internal heat to the outside without the introduction of foreign substances or wind without a separate blowing fan.

Description

Air Conditioner {Air Conditioner}

The present invention relates to an air conditioner, and more particularly, to an air conditioner including a compressor driven by an engine.

In general, an air conditioner is a device for cooling or heating a room using a heat pump cycle including a compressor, an outdoor heat exchanger, an expansion mechanism, and an indoor heat exchanger.

In order to circulate the refrigerant in the heat pump cycle, a compressor must be driven, and if air conditioners are classified according to the compressor driving method, they can be largely divided into EHP (Electric Heat Pump) and GHP (Gas Engine Driven Heat Pump) types.

The EHP method is a method of driving a compressor using electricity like a motor. In the case of the EHP method, it is easy to control and can be miniaturized, so it is mainly suitable for home use.

The GHP method is a method of driving a compressor using an engine using gas as fuel. The fuel cost is low and the heating and cooling capacity can be enlarged, so it is suitable for use in industries or large buildings. In addition, there is an advantage that there is no problem of power supply and demand.

However, in the GHP method, since the engine produces power using the explosive power through combustion of gas fuel, vibration and noise are relatively large, and there is a problem that heat is generated by itself. In addition, there is a problem that the overall weight is also large because it requires sufficient durability and several attachments.

Due to the characteristics of the engine as described above, when the engine is disposed in one outdoor unit, vibration and noise of the engine are transmitted to components of other heat pump cycles, which may cause performance degradation. In addition, there is a problem that may cause damage to electronic components due to the heat of the engine itself.

In addition, the outdoor unit of the GHP is often installed on the roof of a building, and the outdoor unit in which the engine is disposed is very difficult to move because its weight is considerable. this may happen

In addition, as the components of the heat pump and the engine must all be arranged in the limited space of the outdoor unit case, the internal structure may become quite cramped and complicated. In this case, when repair or maintenance is required, there is a problem that the work difficulty and fatigue of the operator may be significantly increased.

The above problems can be solved by separating the outdoor unit into two units, arranging an engine and a compressor in one unit, and arranging a heat pump cycle configuration excluding the compressor in the other unit.

Existing GHP air conditioner outdoor unit has a separate blower fan that discharges air to the outside. A blower fan is a device for exchanging heat with an outdoor heat exchanger through forced convection. It is also a device for discharging engine heat to the outside to prevent overheating of the engine. However, when the unit in which the engine and the compressor are separately arranged as described above is configured, it is sufficient if the engine is maintained only at a temperature of about 60°C to 70°C or less. Therefore, since the temperature is not relatively high, heat of the engine can be dissipated through natural convection rather than forced convection, and it is rather inefficient to arrange a blower fan.

KR20150137601A

SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner in which an outdoor unit is separated into two units and disposed in a gas engine driven heat pump (GHP) type air conditioner.

Another object of the present invention is to provide an air conditioner in which an engine and a compressor are disposed in separate units in an outdoor unit of a GHP air conditioner.

Another object of the present invention is to provide an air conditioner having an outdoor unit that is easy to move and install in a GHP air conditioner.

Another object of the present invention is to provide an air conditioner having an outdoor unit that is easy to repair and maintain in a GHP air conditioner.

Another object of the present invention is to provide an air conditioner capable of efficiently dissipating heat generated from the engine of the engine/compressor unit to the outside without a separate blower fan.

Another object of the present invention is to provide an air conditioner capable of effectively preventing foreign substances from entering a heat sink of an engine/compressor unit.

Another object of the present invention is to provide an air conditioner capable of continuous operation because water does not flow into a heat sink of an engine/compressor unit even in rainy weather.

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, an air conditioner according to an embodiment of the present invention includes a first case including a compressor for compressing a refrigerant, an engine for driving the compressor, and a case forming a space in which the compressor and the engine are disposed. An air conditioner comprising an outdoor unit and a second outdoor unit including an outdoor heat exchanger for exchanging a refrigerant with the outside, wherein the case forms an inlet through which air is introduced under the engine, and a peripheral panel covering the periphery ; an upper plate disposed on the open upper side of the peripheral panel, disposed on the upper side of the engine, and forming a heat sink through which air is discharged; and a loop disposed above the upper plate and covering the heat sink, wherein the loop covers the entire heat sink when viewed from the top, and at least one side perpendicular to the vertical direction is opened to form a roof opening portion.

In addition, the peripheral panel includes a front side wall, a rear side wall, a left wall and a right wall respectively disposed on the front, rear, left and right sides, and forms a shape of a square pillar, and the roof is disposed to be spaced apart from the heat sink by a predetermined height and an upper roof that is formed to extend toward the upper plate from both left and right sides of the upper roof, and is disposed to cover the entire heat sink when viewed from the left and right; including, so that air flows to the outside, A front roof opening portion and a rear roof opening portion may be formed on the front side and the rear side, respectively.

In addition, the upper plate may be disposed to be positioned below a plane formed by an upper end of the peripheral panel, and the upper roof may be disposed between the upper plate and a plane formed by the upper end of the peripheral panel. .

In addition, the first outdoor unit may include: a drainage device disposed on the upper plate and configured to drain water to the outside; and a waterproof sill having a predetermined height on the upper plate and disposed to surround the front, rear, left and right of the heat sink, wherein the drainage device is spaced apart from the upper plate by a predetermined height and arranged to communicate with the outside and a drain hole that is formed, and the height of the waterproof sill may be higher than or equal to the height of the drain hole, and may be lower than the upper roof.

Also, the first outdoor unit may include a plurality of the drainage devices.

According to claim 3, wherein each of the shape of the heat sink and the upper roof may be a rectangle.

In addition, the front end of the upper roof is located above an imaginary straight line connecting the upper end of the front side wall and the front end of the heat sink, and the rear end of the upper roof is a virtual connecting the rear end of the heat sink with the rear end of the upper roof. It may be located above the straight line of

In addition, each of the inner surfaces of the left and right side roofs of the side roof may be disposed to be spaced apart from the left and right ends of the heat sink by a predetermined distance.

In addition, the peripheral panel includes a front side wall, a rear side wall, a left wall and a right wall respectively disposed on the front, rear, left and right sides, and forms a shape of a square pillar, and the roof is disposed to be spaced apart from the heat sink by a predetermined height and an upper roof that is formed to extend toward the upper plate from both left and right sides of the upper roof, and is disposed to cover the entire heat sink when viewed from the left and right; including, so that air flows to the outside, A loop opening may be formed on either one of the front side or the rear side, and the other side may be closed.

In addition, the upper plate may be disposed to be positioned below a plane formed by the upper end of the peripheral panel, and may be disposed to be inclined so that the height is lowered toward the one side.

In addition, the first outdoor unit may be disposed on the upper plate and further include a drainage device for draining water to the outside, wherein the drainage device may be disposed on one side of the upper plate having a lower height.

In addition, the first outdoor unit may include a plurality of the drainage devices.

In addition, the one end of the upper roof may be located above an imaginary straight line connecting the upper end of the side wall close to the one side and the end of the heat sink close to the one side.

In addition, the upper roof may have a shape inclined so that the height increases toward the one side.

In addition, the upper loop, doedoe higher toward the one side, may have a convex shape toward the outside.

In addition, the first outdoor unit may further include a grill disposed on the upper side of the case to prevent the inflow of foreign substances.

According to the air conditioner of the present invention, there are one or more of the following effects.

First, there is an advantage that vibration and noise can be effectively managed by separating the outdoor unit into two units and separately disposing the engine and the compressor.

Second, since the outdoor unit is divided into two units and the weight is distributed, it also has the advantage of convenient movement and installation.

Third, since the outdoor unit is separated into two units to secure a working space, there is also an advantage in that repair and maintenance are convenient.

Fourth, there is an advantage in that the energy consumed by removing the blower fan from the unit in which the engine and the compressor are disposed is also reduced.

Fifth, there is an advantage in that the production process is simplified and production costs are reduced by removing the blower fan from the unit in which the engine and the compressor are disposed.

Sixth, there is an advantage in that the weight is reduced by removing the blower fan from the unit in which the engine and the compressor are disposed.

Seventh, there is also the advantage of effectively dissipating the heat generated from the engine.

Eighth, there is also the advantage of not having to put in a separate work to dissipate the heat generated from the engine.

Ninth, there is an advantage of preventing foreign substances from entering the heat sink.

Tenth, there is an advantage of preventing moisture from entering the heat sink in case of rain.

Eleventh, there is the advantage of being able to utilize the case of the existing GHP air conditioner.

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.

1 is a system diagram of an air conditioner according to the present invention.
2 is a perspective view illustrating a first outdoor unit and a second outdoor unit of the air conditioner according to the present invention.
3 is a front view of a first outdoor unit and a second outdoor unit of the air conditioner according to the present invention.
4 is a rear perspective view showing a state of the first outdoor unit of the air conditioner according to the present invention.
5 is a rear perspective view showing the state of the first outdoor unit from which the peripheral panel is removed.
6 is a side view of the first outdoor unit from which the peripheral panel, the upper cover, and the frame are removed.
7 is a rear perspective view of the second outdoor unit of the air conditioner according to the present invention.
8 is a front perspective view showing a state of the second outdoor unit from which the peripheral panel is removed.
9 is a front perspective view of the second outdoor unit in which the peripheral panel, the upper panel, and the blowing fan are removed.
10 is a perspective view showing a state of the first outdoor unit from which the grill is removed.
11 is a conceptual diagram illustrating a state in which air flows in the first outdoor unit.
12 is a side view illustrating a heat sink of the first outdoor unit according to an embodiment of the present invention.
13 is a side view showing a heat sink of the first outdoor unit according to another embodiment of the present invention.
14 is a side view showing a heat sink of the first outdoor unit according to another embodiment of the present invention.
15 is a side view showing a heat sink of the first outdoor unit according to another embodiment of the present invention.
16 is an enlarged view showing the heat sink shown in FIG. 10 .
17 is a perspective view illustrating a drainage device disposed around a heat sink.

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.

The front (F), rear (R), left (Le), right (Ri), upper (U), and lower (D) marks shown in FIGS. 2 to 11 are descriptions of the air conditioner according to this embodiment. is for Accordingly, if the reference is changed, the direction setting may be differently grasped.

Hereinafter, the present invention will be described with reference to the drawings for explaining an air conditioner according to embodiments of the present invention.

<Overall composition>

Referring to FIG. 1 , the air conditioner of the present invention heats a first outdoor unit 100 for driving an engine 140 and a compressor 150 with gas fuel, and a refrigerant discharged from the compressor 150 with outdoor air. Alternatively, the second outdoor unit 200 that heats the coolant for cooling the engine 140 with outdoor air or refrigerant, and the first outdoor unit 100 and the second outdoor unit 200 are connected, and the coolant flows. It includes a cooling water pipe 400, a first outer refrigerant pipe 310 connecting the first outdoor unit 100 and the second outdoor unit 200, and through which a refrigerant flows.

The air conditioner of the present invention includes at least one indoor unit (not shown) connected to the second outdoor unit 200, connects the second outdoor unit 200 and the indoor unit, and connects the second outdoor unit 200 to the second outdoor unit through which the refrigerant flows. It includes an outer refrigerant pipe (320).

The first outdoor unit 100 and the second outdoor unit 200 are spaced apart from each other. The first outdoor unit 100 and the second outdoor unit 200 are connected to the cooling water pipe 400 and the first outer refrigerant pipe 310 . Accordingly, it is possible to minimize transmission of vibrations according to the driving of the engine 140 and the compressor 150 included in the first outdoor unit 100 to the second outdoor unit 200 .

<1st outdoor unit>

4 and 5 , the first outdoor unit 100 includes an engine 140 driven through combustion of gas fuel, and a compressor connected to the engine 140 and a belt 152 to compress refrigerant ( 150), and a first case 110 that forms an external shape and forms a space in which the engine 140 and the compressor 150 are disposed.

The first case 110, the first base 112 covering the lower side, the first base 112 is vertically disposed on the upper side, the first frame 114 forming a skeleton, the first base 112 upper side It may include a first peripheral panel 122 that is disposed on, is connected to the first frame 114, and covers the circumferential surface.

Also referring to FIG. 10, the first case 110 is disposed on the open upper side of the first circumferential panel 122, and is disposed below a predetermined depth rather than the plane formed by the upper end of the first circumferential panel 122, An upper plate 126 disposed above the engine 140 may be included. An opening is formed in the center of the upper plate 126 to form a heat dissipation hole 128 through which air can pass. A roof 500 is disposed on the upper plate 126 . The roof 500 is disposed on the upper side of the heat sink 128 , and is disposed to have the entire heat sink 128 when viewed from the upper side.

Referring to FIG. 5 , the first base 112 may be fixed to the ground, and a configuration disposed inside the first case 110 may be fixed. The first base 112 is a first base panel 116 and a first base supporter 118 disposed below the first base panel 116 and spaced apart from the ground to an upper side of the first base panel 116. , which is disposed on the upper side of the first base panel 116 and may include a first base frame 120 to which some components are fixed.

Referring to FIG. 6 , the first base 112 may include two first base frames 120 spaced apart from each other on the upper side of the first base panel 116 . The first base frame 120 has an approximately 'C' shape in cross section, and both ends are fixed to the first base panel 116 . Since the first base frame 120 is fixed to the first base panel 116 at both ends of the bent, vibration generated in the damper 146 to be described below can be mitigated and transmitted to the first base panel 116 .

Referring to FIG. 5 , the first frame 114 may be disposed at the corners of the first base panel 116 , respectively. The first peripheral panel 122 is connected to the first frame 114 spaced apart from each other, and is disposed to cover the peripheral surface of the first outdoor unit 100 . The first peripheral panel 122 forms an external shape of the first outdoor unit 10 . A first inlet (122b1) through which air is introduced is formed in a lower portion of the first peripheral panel (122).

Referring to FIG. 3 , the first peripheral panel 122 may include a first connector 124 to which the first outer refrigerant pipe 310 and the outer cooling water pipe 410 are connected. The first connector 124 is disposed at the lower end of the first peripheral panel 122 .

Referring to FIG. 5 , the first control box 180 is disposed in the inner space of the first case 110 . The first control box 180 is disposed above the inner space so as to be spaced apart from the engine 140 , so that transfer of heat generated from the engine 140 to the first control box 180 can be minimized.

Referring to FIGS. 4 and 10 , a first upper grill 132 covering the upper side of the upper plate 126 may be disposed on the upper plate 126 and the roof 500 . The first upper grill 132 has a grid shape or a stripe shape to prevent an external object from falling to the upper plate 126 without interfering with the flow of air.

The engine 140 is an internal combustion engine that operates through a process of burning compressed gas. The engine 140 may rotate the engine-side pulley 142 (refer to FIG. 1 ) disposed on one side of the engine 140 through four strokes of intake, compression, explosion, and exhaust.

Referring to FIG. 5 , in the first outdoor unit 100 , an engine frame 144 for fixing the arrangement of the engine 140 on the upper side of the first base 112 , the engine frame 144 and the first base ( It connects 112 and includes a damper 146 for mitigating vibration caused by the operation of the engine 140 . The first outdoor unit 100 includes a plurality of dampers 146 . In this case, the four dampers 146 may be disposed to be spaced apart from each other.

Each of the plurality of dampers 146 may connect the engine frame 144 and the first base 112 to each other. Each of the plurality of dampers 146 may have a lower end coupled to the first base frame 120 , and an upper end coupled to the engine frame 144 .

The engine frame 144 may be coupled to the engine 140 on one side and connected to the damper 146 on the other side. Accordingly, it is possible to minimize the transmission of vibrations according to the operation of the engine 140 to the entire first case 110 .

The engine frame 144 may fix the arrangement of the compressor 150 connected to the engine 140 and the belt 152 . That is, in the engine frame 144 , the engine 140 and the compressor 150 may be spaced apart from the first base 112 by a predetermined interval.

The compressor 150 may be connected to the engine 140 to compress the refrigerant when the engine 140 operates. Two compressors 150 connected to the engine 140 may be disposed in the first outdoor unit 100 . The compressor 150 includes an engine-side pulley 142 and a compressor-side pulley 154 connected by a belt 152 , and the compressor-side pulley 154 (refer to FIG. 1 ) rotates by the operation of the engine 140 . , the refrigerant can be compressed.

Referring to FIG. 5 , the first outdoor unit 100 includes an air cleaner 160 that filters the air supplied to the engine 140 and supplies clean air, and the gas supplied to the engine 140 at a constant pressure. The zero governor 162 supplied, the air cleaner 160 and the mixer 164 that mixes the gas and air supplied through the zero governor 162, and the exhaust that heat exchanges the gas discharged from the engine 140 with the coolant A gas heat exchanger 166, a muffler 168 for reducing the noise of exhaust gas discharged from the engine 140, and a drain filter 170 for purifying and exhausting condensed water generated in the exhaust gas that has passed through the muffler 168 may include

The zero governor 162 always supplies fuel at a constant pressure regardless of a change in the pressure or flow rate of the fuel flowing into the zero governor 162 . The zero governor 162 can obtain a stable outlet pressure over a wide range, and can control the pressure of gas fuel supplied to the engine to be almost constant in the form of atmospheric pressure.

The air cleaner 160 may block the mixing of moisture and oil in the form of dust and mist by using a filter for external air supplied to the engine.

The mixer 164 discharges the supplied fuel and air at a constant mixing ratio and supplies it to the engine.

The zero governor 162 may be fixedly disposed on one side of the first frame 114 . The air cleaner 160 is disposed adjacent to the zero governor 162 . The air cleaner 160 may be fixed to the upper plate 126 through a separate fixing member 184 .

The muffler 168 may be fixedly disposed on one side of the first frame 114 . The muffler 168 is disposed above the drain filter 170 , so that condensed water generated from the muffler 168 may flow into the drain filter 170 . The drain filter 170 may be fixedly disposed on the first base 112 . Referring to FIG. 5 , the drain filter 170 may be fixedly disposed above the first base frame 120 . The exhaust gas exhaust port 134 may be disposed above the muffler 168 . Accordingly, the exhaust gas that has passed through the muffler 168 may be discharged to the outside through the exhaust gas exhaust port 134 .

The first outdoor unit 100 includes an oil tank 172 for storing oil, and an oil pump 174 for supplying the oil stored in the oil tank 172 to the engine. The oil pump 174 may supply the oil stored in the oil tank 172 to the engine to preheat or cool the engine 140 .

The oil tank 172 may be fixedly disposed above the first base panel 116 . The oil tank 172 may be disposed between the two first base frames 120 spaced apart from each other.

The first outdoor unit 100 includes a first control box 180 in which an electric component for controlling the driving of the engine 140 or the compressor 150 is incorporated.

The first control box 180 is spaced apart from the engine 140 . Referring to FIG. 5 , the engine 140 is fixedly disposed on the first base 112 , and the first control box 180 is disposed adjacent to the first upper panel 126 . In the inner space formed by the first peripheral panel 122 , the first base 112 , and the first upper panel 126 , the first control box 180 is spaced apart from the engine 140 as far as possible. It is possible to minimize the transfer of heat generated by the engine 140 to the first control box 180 .

<2nd outdoor unit>

7 to 9 , the second outdoor unit 200 has an external shape, a suction port is formed on a circumferential surface (not shown), and a second case 210 that forms a discharge port (not shown) upward. ), a blowing fan 230 for sending the air inside the second case 210 to the outlet, a fan motor M for rotating the blowing fan 230, an outdoor heat exchanger 240 disposed inside the second case 210 ), disposed inside the second case 210 , the coolant pump 238 for supplying coolant to the engine 140 or the exhaust gas heat exchanger 166 , is disposed inside the second case 210 , and the compressor 150 ), a switching valve 242 that sends the refrigerant discharged from the outdoor heat exchanger 240 or an indoor unit, an oil separator 244 that separates oil in the refrigerant discharged from the compressor 150, and the refrigerant supplied to the compressor 150 and an accumulator 246 for supplying gaseous refrigerant to the compressor 150, a plate heat exchanger 248 for exchanging heat with cooling water and refrigerant, a radiator 250 for exchanging cooling water with outdoor air, and flow of cooling water It includes cooling water valves 252a and 252b for controlling the direction, and a cooling water tank 254 for storing cooling water.

The second case 210 includes a second base 212 that covers the lower side, a second frame 218 that is vertically disposed above the second base 212 , and a second frame 218 that forms a skeleton, and an upper side of the second base 212 . The upper panel (not shown) is disposed on, is connected to the second frame 218, and is disposed on the second peripheral panel 220 covering the circumferential surface, the second peripheral panel 220 and the upper side, and forms an exhaust port (not shown) ( 226) may be included.

The second peripheral panel 220 is formed with a suction port (221a) through which air is sucked. The second peripheral panel 220 may include a second connector 222 to which the first outer refrigerant pipe 310 and the outer cooling water pipe 410 are connected. The second connector 222 is disposed at the lower end of the second peripheral panel 220 .

Referring to FIG. 3 , a third connector 222b to which the second outer refrigerant pipe 320 is connected may be disposed at the lower end of the second peripheral panel 220 . The third connector 222b may be spaced apart from the second connector 222a in one direction and disposed at the same height as the second connector 222a.

Referring to FIG. 8 , a second control box 256 for controlling the operation of the blowing fan 230 and the cooling water pump 238 is disposed in the inner space of the second case 210 . The second control box 256 may be disposed adjacent to the blowing fan 230 to rapidly form forced convection of air around the second control box 256 to cool the second control box 256 .

An outlet (not shown) is formed in the upper panel 226 , and a blowing fan 230 is disposed below the outlet (not shown). A second upper grill 232 covering the upper panel 226 is disposed above the blowing fan 230 .

2 and 3 , the second case 210 may be formed to have the same size as the first case 110 . That is, the second base 212 included in the second case 210 may have the same size as the first base 112 included in the first case 110 . In addition, the second peripheral panel 220 included in the second case 210 may have the same size as the first peripheral panel 122 included in the first case 110 . As described above, the first base 112 and the second base 212 have the same size, and as the first peripheral panel 122 and the second peripheral panel 220 have the same size, each configuration It can be produced with the same manufacturing process. This may bring simplification to the production process of the first case 110 and the second case 210, and may bring about the effect of reducing the manufacturing cost.

The coolant pump 238 may send coolant to the engine 140 and the exhaust gas heat exchanger 166 to cool the engine 140 and the exhaust gas heat exchanger 166 . The cooling water pump 238 may be disposed in the first outdoor unit 100 . Even if the cooling water pump 238 is disposed as the first outdoor unit 100 , additional cooling water pipes or refrigerant pipes are not exposed to the outside of the first outdoor unit 100 and the second outdoor unit 200 , so the cooling water pump 238 ) may be disposed in the first outdoor unit 100 .

<Roof and heat sink>

Hereinafter, the roof 500 and the heat sink 128 of the first outdoor unit 100 will be described.

10 and 11 , in the first outdoor unit 100 , a heat dissipation hole 128 is formed in the center of the upper plate 126 to communicate with the inner space formed by the first case 110 . do. The inner space and the outside communicate with each other through the heat sink 128 . The compressor 150 and the engine 140 inside the first outdoor unit 100 generate heat, and when the heat is not released to the outside, the heat is accumulated inside and the internal temperature rises. In this case, since it adversely affects not only the engine 140 and the compressor 150 but also electronic components such as the first control box 180 disposed therein, it may cause a direct degradation of the performance of the first outdoor unit 100 . . Therefore, it is necessary to dissipate the heat inside the first outdoor unit 100 to the outside. Unlike the second outdoor unit 200 in which the outdoor heat exchanger 240 is disposed, it is sufficient if the internal temperature of the first outdoor unit 100 is maintained at a temperature of about 60°C to 70°C or less. If a forced convection means, such as a blowing fan 230, is disposed in the first outdoor unit 100, a control means for controlling this must be separately included or built in the first control box 180, and the blowing fan 230 ) may be rather inefficient because additional power is consumed to drive it. It is efficient to use natural convection to maintain a temperature of about 60°C to 70°C. High temperature air has a lower density than low temperature air and rises due to buoyancy, creating natural convection. Referring to FIG. 11 , in order for the air to which the heat generated by the compressor 150 and the engine 140 is transferred to rise, the inlet 122b1 through which the air is introduced is at least equal to or lower than that of the compressor 150 and the engine 140 . should be placed in position. And the heat sink 128 from which the air is discharged should be disposed above the compressor 150 and the engine 140 . In this case, the air introduced from the inlet 122b1 passes through the compressor 150 and the engine 140 , absorbs the heat of the compressor 150 and the engine 140 , rises and passes through the heat sink 128 to the outside. will be emitted However, since external wind, snow, rain or dust may be introduced through the heat sink 128 communicating with the outside, a means to prevent this is required.

Referring to FIG. 10 , the upper plate 126 is disposed on the upper side of the first case 110 , and disposed below a predetermined depth rather than a plane formed by the upper end of the first peripheral panel 122 , rather than the engine 140 . and an upper plate 126 disposed on the upper side. The upper plate 126 may be disposed to cover all components such as the engine 140 disposed therein when viewed from above, except for the heat sink 128 . In the upper plate 126 , in addition to the heat dissipation hole 128 , a drainage device 550 may be disposed or an opening through which the muffler 168 may be formed. A gap may be generated between the upper plate 126 and the first peripheral panel 122 so that a sealing process may be performed so that an external material does not flow therein. Since the upper end of the first peripheral panel 122 from the upper plate 126 has a height by a predetermined depth, foreign substances such as wind, snow, rain, and dust from the outside flow backward through the heat sink 128 Inflow in the lateral direction can be prevented.

The first peripheral panel 122 may include a front side wall 122a, a rear side wall 122b, a left wall 122c, and a right side wall 122d respectively disposed on the front, rear, left, and right sides. One circumference panel 122 may form an external shape of a square pillar.

Referring to FIG. 10 , the first outdoor unit 100 includes a roof 500 disposed above the upper plate 126 and disposed to cover the entire heat sink 128 when viewed from the top. The roof 500 is configured to prevent external wind or foreign substances from flowing into the heat sink 128 . The roof 500 may include an upper roof 510 disposed to be spaced apart from the heat sink 128 upward by a predetermined height and disposed to cover the entire heat sink 128 when viewed from the top. The upper roof 510 is configured to prevent wind or foreign substances flowing in from the upper side from being introduced through the heat sink 128 . To this end, the uppermost portion of the upper roof 510 is located below the plane formed by the upper end of the first peripheral panel (122). In addition, the area of the upper roof 510 should be larger than the open area of the heat sink 128 . The shape of the upper roof 510 may be a rectangle when viewed from above, and the heat sink 128 may also have a rectangular shape. The upper roof 510 and the heat sink 128 may be rectangular similar to each other.

Since the upper roof 510 is disposed to be spaced apart from the upper plate 126 by a predetermined distance, a space may be formed between the upper roof 510 and the upper plate 126 . A portion of the space communicating with the outside is referred to as a roof opening portion. Air discharged from the heat sink 128 passes through the roof opening. The roof opening portion may be formed on at least one side perpendicular to the vertical direction in the space between the upper roof 510 and the upper plate 126 , and may be formed on at least one side of the front, rear, left, and right sides. In this case, a plurality of support pillars (not shown) may be disposed on the upper plate 126 , and the upper roof 510 may be supported and disposed through the support pillars.

The roof 500, a blocking member (not shown) extending from the end of the upper roof 510 to the upper plate 126 may be disposed on the front side, the rear side, the left side or the right side. The blocking member (not shown) is configured to isolate and block the heat sink 128 and the outside. In the space formed between the upper roof 510 and the upper plate 126 , a roof opening portion is formed on a side where a blocking member (not shown) is not disposed. In this case, the air emitted from the heat sink 128 bypasses the blocking member (not shown) and flows to the outside, and foreign substances such as wind, snow, rain and dust flowing in from the outside are removed by the blocking member (not shown). 128), so it cannot be directly introduced from the lateral direction.

Referring to FIG. 10 , the roof 500 may include a side roof 520 as a blocking member (not shown) on the left and/or right. The inner surface of the side roof 520 may be disposed to be spaced apart from the end of the near heat sink 128 by a predetermined distance. When the side roof 520 is viewed from the side where the side roof 520 is disposed, the entire heat sink 128 is seen to be covered. The side loop 520 may further include a loop coupling part 530 disposed on the lower side. The loop coupling part 530 is configured for coupling the side roof 520 and the upper plate 126 . The loop coupling part 530 may be formed to extend outwardly of the heat sink 128 from the lower end of the side loop 520 . The loop coupling part 530 and the upper plate 126 may be coupled by a screw or the like, and the coupling means is not limited thereto.

On the other hand, when the side roof 520 is disposed on the left and right sides, the left and right sides of the heat sink 128 are blocked from the outside, and open portions connected to the outside are formed on the front side and the rear side. This is referred to as a front side opening (FO) and a rear side opening (RO). (See Fig. 12)

12, the first peripheral panel 122 forms the exterior of the first outdoor unit 100 in a rectangular shape, the upper plate 126 and the heat sink 128 are formed in a rectangular shape, and the front side opening part ( When both the FO) and the rear opening portion RO are formed, the end of the upper roof 510 on the side of the roof opening portion may be disposed as follows. In the case of the front side opening (FO), the front end of the upper roof 510 is located above the imaginary straight line connecting the upper end of the front side wall of the first peripheral panel 122 and the front end of the heat sink 128. can And, in the case of the rear opening portion RO, the rear end of the upper roof 510 is higher than the imaginary straight line connecting the upper end of the rear side wall 122b of the first peripheral panel 122 and the rear end of the heat sink 128 . It may be arranged to be located in In this case, a spaced gap is formed between the front and rear virtual straight lines and the ends of the front and rear upper roof 510, and the high-temperature air emitted from the heat sink 128 can pass through the spaced gap without interfering with the flow. have.

Referring to FIG. 12 , a waterproof sill 560 may be disposed around the heat sink 128 . External foreign substances may be accumulated on the upper plate 126 , and water may be accumulated by rain or melted snow. The waterproof jaw 560 is a means for preventing such foreign substances or water from flowing into the heat sink 128 . The waterproof jaw 560 may be formed or disposed to protrude on the upper plate 126 , may be formed at a constant height, and may be disposed to surround at least a portion or all of the heat dissipation hole 128 . If the upper plate 126 is formed in a plane parallel to the horizontal direction, the waterproof jaw 560 is disposed to surround the entire circumference of the heat sink 128 . In addition, the waterproof jaw 560 may be disposed to be spaced apart from the end of the heat sink 128 by a certain distance. Even if it is introduced into the heat dissipation hole 128 can be prevented from flowing directly. The waterproof jaw 560 may be disposed to be located inside the roof 500 when viewed from the top. When the waterproof jaw 560 is disposed on the outside of the roof 500 , the area between the first peripheral panel 122 and the waterproof jaw 560 may be excessively reduced, and waterproof in consideration of the height of the waterproof jaw 560 . This is because the storage volume in which foreign substances on the outside of the jaw 560 can be accumulated can be reduced.

10 and 12 , a drainage device 550 may be disposed on the upper plate 126 . The drainage device 550 is configured to discharge the water accumulated on the upper plate 126 to the outside. The drain device 550 includes a drain hole 551 disposed above the drain device 550 to introduce water from the outside. The drain device 550 includes a pipe (not shown), and the pipe (not shown) communicates with the drain hole 551 and at the same time communicates with the outside. When the waterproof sill 560 is disposed, the height h1 of the drainage device 550 should be formed at least equal to or lower than the height h2 of the waterproof sill 560, and preferably the height of the drainage device 550 ( h1) should be lower than the height (h2) of the waterproof sill 560. In this case, the water that has not flowed into the heat sink 128 due to the waterproof sill 560 is accumulated up to the height of the drainage device 550 , and the more accumulated water is preferentially discharged to the outside through the drainage device 550 . For this reason, it is possible to prevent water from overflowing into the heat sink 128 beyond the waterproof sill 560 . Of course, when the waterproof sill 560 is not disposed, the drainage device 550 is recessed from the upper plate 126 and must be disposed at the same or lower than the upper plate 126 . In this case, since water does not accumulate on the upper plate 126 and must be immediately discharged through the drainage device 550 to the outside, preferably, the drainage device 550 is disposed at a lower place than the upper plate 126 . do. Only one drainage device 550 may be disposed, or a plurality of drainage devices 550 may be disposed. When a plurality of pieces are disposed, the amount of drainage per hour can be increased, and even when one of the drainage devices 550 is blocked by foreign substances, there is an advantage that water can be discharged to the outside through the other drainage devices 550 .

Referring to FIG. 12 , the height h2 of the waterproof sill 560 is, when the side of the roof opening portion of the roof 500 is one side, the upper end of one side of the first peripheral panel 122 and the heat dissipation hole 128 . It may be formed so that the upper end of one side of the waterproof sill 560 is disposed at a lower place than a virtual straight line connecting one end of the . This is in order not to interfere with the flow of air discharged through the heat sink 128 . And this is another reason why the waterproof jaw 560 is disposed to be spaced apart from the end of the heat sink 128 by a predetermined distance.

Referring to FIG. 13 , on the other hand, the roof 500 may have a roof opening portion formed on only one side of the front side or the rear side. At this time, a blocking wall 570 may be additionally disposed on the other side as a blocking member (not shown) other than the side roof 520 . For example, when only the front side opening FO is formed in the roof 500 , the blocking wall 570 may be disposed on the rear side of the roof 500 .

Even when the roof opening portion is formed on only one side of the front side or the rear side of the roof 500 as described above, the one end of the upper roof 510 is the upper end of the one side of the first peripheral panel 122 and the heat dissipation hole 128 ) may be disposed above the imaginary straight line connecting the one end.

And, referring to FIG. 13 , the upper plate 126 may be inclined so as to decrease in height toward any one of the front side and the rear side. In this case, the drainage device 550 should be disposed on the lower side of the upper plate 126 , preferably, it may be disposed at the lowest point of the upper plate 126 . At this time, when the height of the drainage device 550 is lower than the lowest end among the ends of the heat sink 128 , the waterproof sill 560 does not need to be disposed. However, if the height of the drainage device 550 is higher than the lowest disposed ends among the ends of the heat sink 128 , the waterproof sill 560 must be disposed, and the height of the vent 560 is at least the height of the drainage device 550 . It should be higher than or equal to, preferably higher than the height of the drainage device 550 . And, when the roof opening portion is formed on only one side of the front side or the rear side of the roof 500, and the blocking wall 570 is disposed on the other side, the waterproof jaw 560 does not surround the entire circumference of the heat sink 128. and may not be formed or disposed on the other side. This is because, in the upper plate 126 , water due to snow, rain, etc. is accumulated in a lower part of the upper plate 126 .

In addition, when the roof opening portion is formed on one side, referring to FIG. 14 , the upper roof 510 may be formed to be inclined to increase in height toward the one side. In this case, the flow resistance of the air discharged through the heat sink 128 may be reduced. For example, when only the front side opening (FO) is formed, the angle between the upper loop 510 and the straight line connecting the front side upper end of the first peripheral panel 122 and the front end of the heat sink 128 is reduced and is close to parallel. As the angle decreases, it becomes more consistent with the flow direction of the discharged air, so that the flow resistance of the air can also be reduced.

In addition, when a loop opening portion is formed on the one side, referring to FIG. 15 , the upper roof 510 is inclined so as to increase in height toward the one side, and at the same time, the upper roof 510 is convex toward the outside. can be formed. In this case, the flow resistance of the air discharged through the heat sink 128 may be further reduced. For example, when only the front opening FO is formed, the air discharged from the rear end of the heat sink 128 is guided along the blocking wall 570, and then the flow direction is gently changed to change the flow direction to the front opening FO. ) is guided to the front end of the formed upper loop 510, there is no abrupt change in the flow direction, and thus the flow resistance is reduced.

On the other hand, when the upper roof 510 is formed in a plate shape, referring to FIG. 16 , bending deformation due to fatigue accumulation may occur at the end of the side where the roof opening portion is formed. To prevent this, a reinforcing member 540 extending in a direction perpendicular to the upper roof 510 may be disposed at the end of the upper roof 510 on the side of the roof opening. At this time, when the reinforcing member 540 is formed to extend upward, the foreign substances accumulated in the upper roof 510 are removed from the heat sink 128 without interfering with the flow of air emitted from the heat sink 128 . It can fall to the side and block the inflow.

In addition, referring to FIG. 4 , the first upper grill 132 may be disposed above the roof 500 . The first upper grill 132 may be formed in a grid or stripe shape as described above. Since the flow of air discharged from the heat sink 128 should not be obstructed, the gap between the grids or stripes should not be too narrow. Accordingly, the first upper grill 132 is configured to primarily filter relatively bulky foreign substances from the outside.

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.

100 1st outdoor unit
110 Case 1
122 first peripheral panel
122b1 inlet
126 upper plate
128 heat sink
140 engine
150 compressor
200 2nd outdoor unit
300 refrigerant pipe
400 coolant pipe
500 loops
510 upper roof
520 side roof
530 loop coupling part
540 Reinforcing member
550 drainage
551 drain hole
552 drain body
560 chin
570 barrier
FO front opening
RO rear opening
h1 drainage height
h2 chin height

Claims (16)

a first outdoor unit including a compressor for compressing a refrigerant, an engine for driving the compressor, and a case forming a space in which the compressor and the engine are disposed; and a second outdoor unit disposed separately from the first outdoor unit and including an outdoor heat exchanger for exchanging refrigerant with the outside;
The case is
a peripheral panel forming an inlet through which air is introduced at the lower side of the engine and covering the circumference;
an upper plate disposed on the open upper side of the peripheral panel, disposed on the upper side of the engine, and forming a heat sink through which air is discharged; and
It is disposed on the upper side of the upper plate, including a loop for covering the heat sink,
The loop is
When viewed from above, the air conditioner covers the entire heat sink, and at least one side perpendicular to the vertical direction is opened to form a roof opening portion. According to claim 1,
The peripheral panel includes a front side wall, a rear side wall, a left wall and a right wall respectively disposed on the front, rear, left and right sides, and forms the shape of a square pillar,
The loop is
An upper roof disposed to be spaced apart from the heat sink by a predetermined height; And,
Including; and a side roof formed to extend toward the upper plate from both left and right sides of the upper roof, and arranged to cover the entire heat sink when viewed from the left and right.
An air conditioner in which a front roof opening part and a rear roof opening part are formed on the front side and the rear side, respectively, so that air flows to the outside. 3. The method of claim 2,
The upper plate is
It is arranged to be located below the plane formed by the upper end of the peripheral panel,
The upper roof is an air conditioner disposed between a plane formed by an upper end of the peripheral panel and the upper plate. 4. The method of claim 3,
The first outdoor unit,
a drainage device disposed on the upper plate and draining water to the outside; and
It has a predetermined height on the upper plate, further comprising a waterproof sill disposed to surround the front, rear, left and right of the heat sink,
The drainage device is
It is spaced apart from the upper plate by a predetermined height and includes a drain hole disposed to communicate with the outside,
The height of the waterproof sill is higher than or equal to the height of the drain hole, and is lower than that of the upper roof. 5. The method of claim 4,
The first outdoor unit,
An air conditioner including a plurality of the drainage devices. 4. The method of claim 3,
Each of the heat sink and the upper roof has a rectangular shape. 7. The method of claim 6,
The front end of the upper loop,
It is located above the imaginary straight line connecting the upper end of the front side wall and the front end of the heat sink,
The rear end of the upper loop,
An air conditioner positioned above the imaginary straight line connecting the rear side wall, the upper end, and the rear end of the heat sink. 3. The method of claim 2,
The side loop is
Each of the inner surfaces of the left and right side roofs is disposed to be spaced apart from the left and right ends of the heat sink by a predetermined distance. According to claim 1,
The peripheral panel includes a front side wall, a rear side wall, a left wall and a right wall respectively disposed on the front, rear, left and right sides, and forms the shape of a square pillar,
The loop is
An upper roof disposed to be spaced apart from the heat sink by a predetermined height; And,
Including; and a side roof formed to extend toward the upper plate from both left and right sides of the upper roof, and arranged to cover the entire heat sink when viewed from the left and right.
An air conditioner in which a roof opening is formed on either one of the front side or the rear side so that air flows to the outside, and the other side is closed. 10. The method of claim 9,
The upper plate is
It is arranged to be located below the plane formed by the upper end of the peripheral panel,
The air conditioner is inclined so that the height becomes lower as it approaches the roof opening part. 11. The method of claim 10,
The first outdoor unit,
It is disposed on the upper plate and further comprises a drainage device for draining water to the outside,
The drainage device is an air conditioner disposed on a side having a lower height of the upper plate. 12. The method of claim 11,
The first outdoor unit,
An air conditioner including a plurality of the drainage devices. 11. The method of claim 10,
The end of the upper loop adjacent to the roof opening portion is,
An air conditioner positioned above an imaginary straight line connecting an upper end of a side wall adjacent to the roof opening part and an end of the heat sink adjacent to the roof opening part among the front side wall, the rear side wall, the left wall and the right wall. . 10. The method of claim 9,
The upper loop is
An air conditioner having an inclined shape such that the height increases as it approaches the roof opening portion. 10. The method of claim 9,
The upper loop is
The height of the air conditioner increases as it approaches the roof opening portion, and the air conditioner has a convex shape toward the outside. 16. The method according to any one of claims 1 to 15
The first outdoor unit,
The air conditioner further comprising a grill disposed on the upper side of the case to prevent the inflow of foreign substances.

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