KR20130102352A - Scroll compressor - Google Patents

Abstract

PURPOSE: A horizontal type scroll compressor is provided to rapidly cool a control unit with some of refrigerant flowing via an inlet as the inlet is directly connected to a third space unit in which the control unit is installed. CONSTITUTION: A horizontal type scroll compressor includes a casing (101), a driving motor (102), a crank shaft (125), a compression unit, and a control unit. The compression unit is joined to the crank shaft and includes a rotating scroll (105) with a rotating wrap (152) and fixing scroll (104) with a fixing wrap (132) to form two pairs of compressive chambers by being engaged to the rotating wrap of the rotating scroll. The control unit is electrically connected to the driving motor and controls the driving motor. The internal space of the casing is partitioned into a first space unit (S1) in which the driving motor is installed and an outlet pipe is connected; a second space unit (S2) in which the compression unit is installed and an inlet pipe is connected, and a third space unit (S4) in which the control unit is installed. The second and third space units are communicated.

Description

Horizontal Scroll Compressor {SCROLL COMPRESSOR}

The present invention relates to a horizontal scroll compressor, and more particularly, to a horizontal scroll compressor applied to a vehicle having an inverter integrally.

Generally, a compressor is a device that compresses a fluid such as refrigerant gas, and the compressor is classified into a rotary compressor, a reciprocating compressor, a scroll compressor, and the like according to a method of compressing the fluid.

The scroll compressor is a high-efficiency low-noise compressor which is widely applied in the field of an air conditioner. The scroll compressor forms a plurality of compression chambers in pairs between respective scrolls while two scrolls move relative to each other. The refrigerant is continuously sucked and compressed and discharged.

1 is a cross-sectional view showing the structure of a conventional horizontal scroll compressor.

As shown in the drawing, in the conventional scroll compressor, the main frame 2 and the subframe 3 are arranged at a predetermined interval in the transverse direction in the inner space of the casing 1, and the main frame 2 and A driving motor 4 for generating a rotational force is installed between the subframes 3, and a pivoting scroll 6 to be described later through the main frame 2 at the center of the rotor 42 of the driving motor 4. Is coupled to the crankshaft (5) is coupled to transfer the rotational force of the drive motor (4).

The fixed scroll 6 is fixedly installed at the front side of the main frame 2, and the fixed scroll 6 is provided with two pairs of compression chambers S engaged with the fixed scroll 5 and continuously moving. The swing scroll 7 is coupled to each other, and an Oldham's ring 8 is provided between the swing scroll 7 and the main frame 2 to pivot while preventing the swing scroll 7 from rotating. .

A bearing hole 21 for supporting the crank shaft 5 in the radial direction is formed in the center of the main frame 2, and the bearing bearing 21 has a main bearing for supporting the crank shaft 5 in the radial direction ( 22) is installed.

The inner space of the casing 1 is divided into a suction space 15 in which the suction port 11 is formed and a discharge space 16 in which the discharge port 12 is formed by the main frame 2, and the suction space 15. ) Is provided with a discharge cover 64 which seals the discharge port 63 of the fixed scroll 6 to form an intermediate space 17 so as to communicate with the discharge space 16, and the drive space is provided in the discharge space 16. The motor 4 is provided.

On the front side of the casing 1 is provided an inverter housing 13 which is electrically connected to the drive motor 4 and accommodates an inverter 81 for controlling the drive motor 4. The inverter housing 13 is provided with an air passage 13a for sucking the outside air to cool the inverter 81. In addition, a plurality of heat dissipation fins 13b are formed on the front surface of the inverter housing 13 to cool the inverter housing 13.

In the drawing, reference numeral 31 denotes a sub bearing supporting the crankshaft in a radial direction, 41 is a stator of a drive motor, 51 is an oil path, 61 is a fixed plate, 62 is a fixed wrap, 63 is a discharge port, 71 is a turning plate. 72 is turning lap, 73 is boss, 74 is pin bearing and 82 is IGBT.

The conventional horizontal scroll compressor as described above is operated as follows.

That is, when power is applied to the drive motor 4, the rotating crank shaft 5 rotates together with the rotor 4b of the drive motor 4, and the turning scroll 7 is driven by the old dam ring 8. In the upper surface of the frame 2, the pivoting movement is made by an eccentric distance, and two pairs of compression chambers S are continuously formed between the fixed wrap 62 and the swing wrap 72.

This compression chamber (S) is moved to the center by the continuous turning movement of the turning scroll (7) and as the volume is reduced the refrigerant gas is sucked into the suction space (15) of the casing (1) through the suction port (11), The refrigerant gas is sucked into the compression chamber through the suction port provided in the fixed scroll 7 and compressed and discharged to the discharge space 16 of the casing 1 through the discharge port 63.

At this time, heat is generated in the inverter 81, but the heat is cooled by contacting air passing through the air passage 13a of the inverter housing 13 and air to the heat dissipation fin 13b.

However, in the conventional horizontal scroll compressor as described above, in order to cool the heat generated by the inverter 81, a separate air passage 13a must be formed in the inverter housing 13 and at the same time, a heat radiation fin 13b must be formed. Therefore, not only the processing of the inverter housing 13 is complicated, but also the structure of the inverter housing 13 is cooled by the ambient air, so that the inverter housing 13 and the inverter 81 are kept under high ambient temperature. There was a problem that can not be smoothly cooled. In particular, when the horizontal scroll compressor as described above is applied to the engine of the automobile, the temperature around the compressor is further increased by the engine heat, which causes the inverter components to be deteriorated without the cooling of the inverter 81 smoothly. This could be degraded.

An object of the present invention is to provide a horizontal scroll compressor that can not only simplify the structure for cooling the inverter, but also increase the cooling efficiency of the inverter to prevent deterioration of inverter components and thereby increase the performance or reliability of the compressor. .

In order to achieve the object of the present invention, the casing is provided with a closed inner space; A drive motor installed in the inner space of the casing and having a stator and a rotor; A crank shaft coupled to the rotor of the drive motor; A compression unit including a fixed scroll having a fixed wrap coupled to the crankshaft and having a swing scroll having a swing wrap and a pair of compression chambers engaged with the swing wrap of the swing scroll; And a control unit electrically connected to the drive motor and installed in the inner space of the casing to control the drive motor, wherein the inner space of the casing includes: a first in which the drive motor is installed and the discharge tube is in communication; The horizontal scroll compressor is divided into a space portion, a second space portion in which the compression unit is installed and the suction pipe is communicated, and a third space portion in which the control unit is installed, and the second space portion and the third space portion are formed to communicate with each other. Can be provided.

Here, the suction port is formed in the casing so that the suction pipe is connected, the suction port is in communication with the second space portion and the third space portion, or the suction port is formed in the casing so that the suction pipe is connected, the suction port is the first It may be formed to communicate with the three space portion independently.

The casing may include a shell in which the driving motor is installed; A front cap coupled to one end of the shell to receive the compression part; And a top plate coupled to one end of the front cap to receive the control unit, wherein the front cap includes: a cap portion coupled to the shell and formed with a suction port to be connected to a suction pipe; And a plate part which is integrally formed with the cap part and divides the second space part and the third space part, and a communication hole is formed to communicate the second space part and the third space part.

In addition, the casing is provided with a closed inner space; A drive motor installed in the inner space of the casing and having a stator and a rotor; A crank shaft coupled to the rotor of the drive motor; A compression unit including a fixed scroll having a fixed wrap coupled to the crankshaft and having a swing scroll having a swing wrap and a pair of compression chambers engaged with the swing wrap of the swing scroll; And a control unit electrically connected to the drive motor and installed in the inner space of the casing to control the drive motor, wherein the inner space of the casing includes: a first in which the drive motor is installed and the discharge tube is in communication; A space unit, a second space unit in which the compression unit is installed and a suction pipe is connected, and a third space unit in which the control unit is installed, and the control unit is divided into a partition member that divides the second space unit and the third space unit. It is installed, the partition member may be formed with a heat dissipating portion to contact the refrigerant sucked into the casing.

The heat dissipation unit may include a plurality of heat dissipation fins formed on one side of the partition member belonging to the second space portion, or a refrigerant passage communicating with the suction pipe is formed inside the partition member, and the outlet of the refrigerant passage may be formed in the second member. 2 may be formed to communicate with the space portion.

In addition, the casing may be provided with a terminal unit to which the driving motor and the control unit are electrically connected.

The fixed wrap and the swiveling wrap each have a first uniform section, a variable section, and a second uniform section formed in succession with each other in the direction of the wrap start end from the wrap end, and the second uniform section is greater than the wrap thickness of the first uniform section. The wrap thickness of can be formed thicker.

In the horizontal scroll compressor according to the present invention, the suction port is directly connected to the third space portion in which the control unit is installed, or the heat dissipation fin or the refrigerant flow path is formed in the front cap in which the control unit is installed, whereby a part of the refrigerant sucked through the suction port is Direct cooling of the control unit or indirect cooling through heat transfer allows the control unit to be cooled quickly.

1 is a longitudinal sectional view showing an example of a conventional horizontal scroll compressor;
Figure 2 is a perspective view showing the appearance of the horizontal scroll compressor of the present invention,
3 is a perspective view of the inside of the lateral scroll compressor according to FIG.
Figure 4 is a longitudinal sectional view showing the inside in the horizontal scroll compressor according to FIG.
5 is an enlarged longitudinal sectional view showing another example of the anti-rotation member in the horizontal scroll compressor according to FIG. 4;
6 is an enlarged longitudinal sectional view showing another example of the anti-rotation member in the horizontal scroll compressor according to FIG. 4;
7 is a plan view showing the shape of the wrap thickness of the turning wrap according to the present invention,
8 and 9 are vertical cross-sectional views showing the control unit heat dissipation unit according to the present invention, respectively.

Hereinafter, the horizontal scroll compressor according to the present invention will be described in detail with reference to the embodiment shown in the accompanying drawings.

Figure 2 is a perspective view showing the appearance of the horizontal scroll compressor of the present invention, Figure 3 is a perspective view showing the inside broken in the horizontal scroll compressor according to Figure 2, Figure 4 is a longitudinal cross-sectional view showing the inside in the horizontal scroll compressor according to FIG. It is also.

As shown in the horizontal scroll compressor according to the present invention, the casing 101 is installed long in the horizontal direction, the drive motor 102 for generating a rotational force on one side of the inner space of the casing 101 is installed, On the other side of the inner space of the casing 101 includes a fixed scroll 104 and the turning scroll 105 and the compression unit for receiving the rotational force of the drive motor 102 to form a pair of two compression chamber (P) is installed On one side of the compression unit, a control unit 106 for controlling the operation of the compressor is installed.

The casing 101 forms a first space portion S1 that is open at both ends to form a discharge space, and a shell 111 in which the driving motor 102 is installed, and the shell 111. A front cap 112 that forms a second space portion S2 coupled to one end of the suction space and accommodates the compression unit, and a second space portion that is coupled to one end of the front cap 112. A top plate 113 for forming a third space portion S3 constituting the suction space together with S2 and accommodating the control unit 106, and the other end of the shell 111 are covered with the first space. A fourth space portion S4 constituting the discharge space or the oil separation space together with the first space portion S1 may be formed, and may be formed of a back cap 114 having an oil pump 119 to be described later.

The main frame 103 supporting the crankshaft 125 to be described later and partitioning the first space S1 and the second space S2 may be sealably coupled to the front side of the shell 111. Sealing such as a gasket or an O-ring between the shell 111 and the main frame 103, between the front cap 112 and the top plate 113, and between the shell 111 and the back cap 114, respectively. A member (unsigned) may be interposed.

A plurality of fastening grooves 1111 are formed at one open end of the shell 111, and a plurality of fastening holes 1125 are formed at the front cap 112 to correspond to the fastening grooves 1111 of the shell 111. do. Accordingly, the front cap 112 uses the long fastening bolt B1 fastened to the fastening groove 1111 of the shell 111 by passing through the fastening hole 1121 of the front cap 112. Can be fastened to.

A fastening groove 1122 may be formed in the front cap 112, and a fastening hole (not shown) may be formed in the top plate 113 to correspond to the fastening groove 1122 of the front cap 112. Thus, the top plate 113 is front cap 112 by using a short fastening bolt (B2) that penetrates the fastening hole 1131 of the top plate 113 and is fastened to the fastening groove 1122 of the front cap 112. Can be fastened to In this case, it is possible to repair or replace the control unit by removing only the top plate 113 without disassembling the front cap 112 when the control unit 106 fails.

Although not shown in the drawings, the top plate, the front cap, and the shell may be fastened by using a long fastening bolt fastened to the shell 111 by passing through the top plate 113 and the front cap 112 continuously. . In this case, the top plate, the front cap, and the shell may be easily assembled.

A discharge cover 145 to be described later is interposed between the front cap 112 and the fixed scroll 104 to be described later. The discharge cover 145 may be fastened together when the long fastening bolt B1 is fastened. . In this case, a separate process or parts are not required to assemble the discharge cover 145, thereby simplifying the assembly process.

Meanwhile, a bearing hole 131 is formed in the center of the main frame 103 so as to radially support the crank shaft 125 to be described later, and a crank shaft 125 is radially formed at one side of the bearing hole 131. Main bearing 132 to support it may be installed.

An inlet 1125 is formed in the front cap 112 so as to communicate with the second space S2, and a discharge port 1141 is formed in the back cap 114 so as to communicate with the fourth space S4. The main frame 103 has an exhaust passage 1311 is formed to communicate the intermediate space (S5) and the first space (S1) to be described later, is installed between the shell 111 and the back cap 114 is In the differential pressure separator 115 separating the first space S1 and the fourth space S4, the refrigerant moving to the first space S1 is discharged through the fourth space S4. The exhaust hole 1151 may be formed near the uppermost point so as to be guided to the uppermost point, and an oil hole 1152 may be formed at the lowest point of the differential pressure separating plate. As a result, the refrigerant gas moving to the first space S1 moves to the fourth space S4 through the exhaust hole 1151, while the oil moving to the first space S1 is transferred to the first space S1. It is pressed by the pressure of the first space portion S1 and moves to the fourth space portion S4 forming a relatively low pressure portion through the oil hole 1152.

One side of the shell 111 may be a terminal portion 116 for electrically connecting the terminal of the drive motor 102 and the terminal of the control unit 106. The terminal portion 116 is composed of a plurality of terminal pins 1161, and the first space portion S1 is formed by forming a molding portion 1162 around the plurality of terminal pins 1161 using an insulating material such as plastic. It may be desirable to prevent the second space portion S2 from communicating with the terminal portion 116.

The front cap 112 is formed in an annular shape and coupled to the main frame 103, the cap portion 1121, and is covered in one side of the cap portion 1121 transversely to the second space portion (S2) and third It may be composed of a plate portion 1122 for separating the space (S3). An Insulated Gate Bipolar Transistor (IGBT) 161, which forms part of the control unit 106, is coupled to the plate portion 1122, and a substrate 162 electrically connected to the idle unit 161. It can be combined to be spaced apart by a predetermined height.

The cap part 1121 may have a suction port 1125 to which the suction pipe is connected. The suction port 1125 may be bisected by the plate part 1122 such that the suction port 1125 may communicate with the second space S2 and the third space S3 at the same time. The suction port 1125 may be formed to communicate with the second space portion S2 or the third space portion S3 independently by the plate portion 1122.

A communication hole 1126 may be formed in the plate portion 1122 such that the second space portion S2 and the third space portion S3 communicate with each other. Thus, even when the refrigerant is sucked into the second space S2 or the third space S3 or simultaneously sucked into the second space S2 and the third space S3, the refrigerant It may be sucked into the suction port 143 of the fixed scroll 104 to be described later through both the second space (S2) and the third space (S3).

Here, when the suction port 1125 is formed to be in communication with the second space S2 and the third space S3 at the same time, the second space side suction port 1125a and the third space side suction port 1125b. The cross-sectional area of can be adjusted appropriately. For example, while the suction port 143 of the fixed scroll 104 communicates with the second space portion S2, the third space portion S3 communicates with the communication hole 1126 provided in the plate portion 1122. Since it communicates with the suction port 143, a large amount of refrigerant sucked through the suction port 1125 may be sucked toward the second space side suction port. Therefore, in order to allow the refrigerant to be uniformly sucked into the second space portion S2 and the third space portion S3, it is preferable that the cross section area of the third space portion side suction port is larger than that of the second space side suction port. . However, if the cross-sectional area of the third space-side suction port is too wide, a large amount of refrigerant may be sucked into the third space S3 to cause suction loss, so it is desirable to form an excessively wide cross-sectional area of the third space-side suction port. Not. Therefore, it may be preferable that the third space side suction port is formed in a range of about 25 to 75% of the cross-sectional area of the second space side suction port.

A discharge port 1141 may be formed at one side of the back cap 114 to be connected to the discharge pipe, and an oil separator 117 may be inserted into the discharge port 1141. The oil separator 117 may be installed in a direction perpendicular to the installation surface, but in order to double the oil separation effect by increasing the centrifugal force, the oil separator may be inclined.

In addition, a sub bearing 118 supporting the other end of the crankshaft 125 may be installed at the center of the back cap 114, and the oil pump 119 may be installed at one side of the sub bearing 118.

The driving motor 102 may be wound around the stator 121 in a winding coil manner. In addition, the drive motor 102 may be a constant speed motor having the same rotation speed of the rotor 122, but the rotation speed of the rotor 122 may be varied in consideration of the multifunctionality of the refrigeration apparatus to which the compressor is applied. Inverter motors can be used. The crankshaft 125 is rotatably coupled to the turning scroll 105 to be described later to the rotor 122 of the driving motor 102 to transmit the rotational force of the driving motor 102 to the turning scroll 105. Combined.

A fixed scroll (104) is fixedly coupled to one side of the main frame (102). The fixed scroll 104 is fixed plate 141 is formed in the shape of a disk to be fixed to the main frame 102, the fixed wrap 142 for forming a compression chamber (P) on one side of the fixed plate 141 Is formed, a suction port 143 is directly connected to the suction port 1125 at the edge of the hard plate 141, and a discharge port 144 is formed at the center of the fixed plate 141. And a discharge cover 145 for guiding the refrigerant discharged through the discharge port 144 to move to the first space (S1) without passing through the second space (S2) on the rear surface of the fixed scroll (104) Can be installed. The discharge cover 145 may be fastened to the fixed scroll 104 and the fixed scroll 104 may be fastened to the main frame 102, but the discharge cover 145 and the fixed scroll 104 may be main together. The frame 102 may be fastened or the discharge cover 145, the fixed scroll 104, and the main frame 102 may be fastened together to the shell 111. When the discharge cover and the fixed scroll or the discharge cover and the fixed scroll and the main frame are fastened together, the manufacturing cost of the compressor can be reduced by reducing the number of fastening bolts and the number of assembly operations.

Between the upper surface of the main frame 102 and the bottom of the fixed scroll 104 is provided with a rotating scroll 105 to form a pair of compression chamber (P) together with the fixed scroll (104). The pivoting scroll 105 is a pivoting plate 151 is formed in the shape of a disc to make a pivoting movement between the main frame 102 and the fixed scroll 104, the fixed wrap (151) on one side of the pivoting plate (151) Swivel wrap 152 is formed in engagement with the 142 to form a compression chamber (P), the boss 153 is coupled to the crank shaft 125 is formed on the other side of the swivel plate 151.

Between the pivoting scroll 105 and the main frame 102, the rotational scroll 105 receives the rotational force of the driving motor 102 to prevent the rotation of the rotation without rotating the rotational member (all damring) 171 is installed. The anti-rotation member may be made of a keyless olddam ring 172 in addition to the olddam ring having a key as shown in FIG. 5, and the pin 1731 is provided on the swinging scroll 105 as shown in FIG. The groove 1732 having a may be formed of a pin and a ring type.

The fixed wrap 142 and the swing wrap 152 is formed in an involute shape with a uniform wrap thickness, or the wrap thickness is thickened at a constant rate from the end of the wrap toward the start end direction, that is, from the suction to the discharge direction of the refrigerant. It may be formed in an algebraic spiral shape.

However, when the fixed wrap 142 and the swing wrap 152 is formed in a typical involute shape, the thickness of the wrap is constant, so the volume change rate is also constant. Therefore, in order to obtain a high compression ratio in the scroll compressor using the involute curve, it is necessary to increase the number of turns of the lap or increase the height of the lap. However, as the number of turns of the lap increases, the size of the compressor also increases, and when the height of the lap increases, the strength of the lap weakens and the reliability decreases.

On the other hand, when the fixed wrap 142 and the swing wrap 152 is formed in a logarithmic spiral shape, the compression ratio can be increased to a certain degree without increasing the number of turns of the wrap, but when the wrap is designed in a logarithmic spiral shape, the suction end When the lap thickness of the lap is determined, the lap thickness of the discharge end (ie, the end of the lap) is also determined so that the design freedom of the lap is lowered, thereby reducing the compression ratio of the scroll compressor to the desired freezing capacity. There was a limit to the design.

 In view of this, in the present embodiment, the fixed wrap 142 and the swing wrap 152 are formed to have a variable section between a plurality of uniform sections, so that the discharge end thickness of the wrap (that is, the start end thickness of the wrap) is reduced. It can be formed significantly larger than the suction end thickness (that is, the end thickness of the wrap), thereby increasing the thickness of the wrap in accordance with the change in the compression ratio can significantly improve the compressor performance.

As shown in FIG. 7, the fixed wrap and the swing wrap of the present embodiment (the fixed wrap and the swing wrap are formed to be symmetrical, so hereinafter, the pivot wrap will be described as a representative example) 152 are the suction side ends of the wrap (of the wrap End angle) to a predetermined section, a first uniform section 1521 having the same wrap thickness is formed, and a variable section 1522 having a wrap thickness thicker toward the discharge side from the inner end of the first uniform section 1521 to a predetermined section is provided. A second uniform section 1523 having the same wrap thickness is formed from the inner end of the variable section 1522 to the discharge side end of the wrap (start angle of the wrap).

The wrap thickness of the first uniform section 1521 is thinner than the wrap thickness of the second uniform section 1522. Preferably, when the lap thickness of the first uniform section 1521 is t1 and the lap thickness of the second uniform section 1523 is t2, the lap thickness ratio t2 / t1 in the two uniform sections is It may be formed so that at least 1.5 <(t2 / t1) <3.0. Here, when the ratio of the lap thickness in the two uniform sections 1521 and 1523 is 1.5 or less, the compression ratio does not increase as expected because the lap thickness at the discharge side end is thinner as compared with the conventional algebraic spiral lap. Can be. On the other hand, when the ratio of the lap thickness is 3.0 or more, the lap thickness of the second uniform section 1523 on the discharge port side becomes too thick, making it difficult to secure a proper discharge hole, thereby increasing the discharge resistance as the area of the discharge hole is narrowed. There is a fear that the compressor performance is lowered.

The lap thickness t3 of the variable section is greater than or equal to the lap thickness t1 of the first uniform section 1521, and the lap thickness t2 of the second uniform section 1523 is the maximum lap thickness. It may be formed equal or smaller.

In the drawings, reference numeral 146 denotes a check valve and 1251 denotes an oil passage.

The above-described horizontal scroll compressor according to the present invention operates as follows.

That is, when power is applied to the drive motor 102, the crankshaft 125 rotates together with the rotor 142 to transmit rotational force to the turning scroll 105.

Then, the swing scroll 105 is a pair of two moving in succession between the fixed wrap 142 and the swing wrap 152 while turning the eccentric distance from the main frame 102 by the Oldham ring 171 The compression chamber P is formed.

Then, the compression chamber P moves to the center by the continuous turning motion of the turning scroll 105 to decrease the volume to compress the refrigerant sucked into the compression chamber P through the suction port 1125, and the compressed refrigerant Is discharged to the first space S1 of the casing 101 through the discharge port 144 communicated with the inner final compression chamber.

Here, a part of the refrigerant sucked into the second space S2 through the suction port 1125 is directly sucked into the compression chamber P through the suction port 1043 of the fixed scroll 104, whereas the third refrigerant Some of the refrigerant moving to the space S3 is directly contacted with the idle 161 forming the control unit 106 and the circuit board 162 to be cooled, and then cooled through the communication hole 1126. S2) and is sucked into the compression chamber (P) through the suction port 143 of the fixed scroll (104). As a result, a part of the cold refrigerant sucked through the suction port 1125 circulates directly through the third space S3 in which the control unit 106 is installed, thereby directly cooling the control unit 106, and thus cooling structure such as a separate heat dissipation fin. Without this, the control unit can be cooled effectively, thereby improving the performance and reliability of the compressor and preventing deterioration of parts of the control unit.

On the other hand, the refrigerant discharged from the compression chamber (P) is discharged into the intermediate space (5) by the discharge cover 145, the refrigerant discharged into the intermediate space (5) is the exhaust hole of the fixed scroll (104) ( 1511 and the exhaust passage 1311 of the main frame 102 are moved to the first space S1, and the refrigerant moving to the first space S1 is exhausted from the differential pressure separating plate 115. The refrigerant moves to the fourth space S4 through the holes 1151, and the refrigerant moving to the fourth space S4 is separated from the oil to move to the refrigerating cycle through the discharge port 1145. At this time, the oil separated from the refrigerant is pumped by the oil pump 119 is supplied to the compression unit. The oil contained in the first space S1 is formed through the oil hole 1152 of the differential pressure separating plate 115 due to the pressure difference between the first space S1 and the fourth space S4. 4 is moved to the space S4 and pumped to the oil pump 119 together with the oil separated from the refrigerant, and is supplied to the compression unit.

On the other hand, when there is another embodiment of the heat dissipation unit for cooling the control unit in the horizontal scroll compressor according to the present invention.

That is, in the above-described embodiment, a part of the refrigerant sucked into the inner space of the casing 101 through the inlet 1125 is guided to the third space S3 provided with the control unit 106 to control the unit 106. ) Was cooled and then sucked into the compression chamber (P).

However, in this embodiment, as shown in Figure 8, the inlet 1125 is formed so as to communicate only with the second space (S2) at the same time a plurality of heat radiation fins (one side of the plate portion 1122 of the front cap 112) 1126 to form the refrigerant flowing through the inlet 1125 is in contact with the heat dissipation fin 1126 provided in the plate portion 1122 of the front cap 112 to cool the front cap 112 by the third space (S3) ) Or indirectly cools the idle 161.

In this case, since the refrigerant sucked through the suction port 1125 does not flow into the third space S3, the refrigerant is preheated when it is circulated to the third space S3, thereby preventing the suction loss. can do.

On the other hand, unlike the embodiment shown in Figure 8 is another embodiment of the present embodiment as shown in Figure 9 the refrigerant passage 1127 is the front cap 112 so that the refrigerant can pass through the interior of the front cap 112 It can be formed in the plate portion 1122 of the. The inlet of the refrigerant passage 1127 may be in communication with the inlet 1125, while the outlet may be in communication with the second space S2.

A portion of the refrigerant sucked through the inlet 1125 passes through the refrigerant passage 1127 to cool the front cap 112, and the third cap S3 is cooled as the front cap 112 is cooled. It is possible to indirectly cool the idleness.

In this case, as the refrigerant suctioned through the suction port 1125 passes through the narrow and long refrigerant passage 1127, suction resistance may be generated, and suction loss may be generated as compared with the embodiment of FIG. 8. Compared to the exemplary embodiment shown in the drawing, since the refrigerant does not flow into the third space part and thus does not come into direct contact with the idle space, an element such as the idle can be prevented from being damaged or excessively preheated by the refrigerant.

101: casing 111: shell
112: front cap 1125: inlet
1125a: second space side suction port 1125b: third space side suction port
113: top plate 114: back cap
115: differential pressure separating plate 1151: exhaust hole
1152: oil hole 116: terminal portion
117: oil separator 118: sub-bearing
119: oil pump 102: drive motor
121: stator 122: rotor
125: crankshaft 103: main frame
132: main bearing 104: fixed scroll
132: fixed wrap 143: suction port
144: discharge port 105: turning scroll
151: turning lap 152: turning lap
106: control unit 171: Olddamling
172: Keyless Oldhamling 1731,1732: pins, groove
P: Compression chamber S1, S2, S3, S4: Space part
S5: Intermediate space

Claims (11)

A casing having a sealed inner space;
A drive motor installed in the inner space of the casing and having a stator and a rotor;
A crank shaft coupled to the rotor of the drive motor;
A compression unit including a fixed scroll having a fixed wrap coupled to the crankshaft and having a swing scroll having a swing wrap and a pair of compression chambers engaged with the swing wrap of the swing scroll; And
And a control unit electrically connected to the drive motor and installed in the inner space of the casing to control the drive motor.
The inner space of the casing,
It is divided into a first space portion in which the drive motor is installed and the discharge tube communicates, a second space portion in which the compression unit is installed and the suction tube communicates, and a third space portion in which the control unit is installed,
And the second space portion and the third space portion communicate with each other. The method of claim 1,
The casing has a suction port is formed so that the suction pipe is connected, the suction port is formed so as to communicate with the second space portion and the third space portion. The method of claim 1,
The casing is formed with a suction port so that the suction pipe is connected, the suction port is formed so as to communicate independently with the third space portion. The method of claim 1, wherein the casing,
A shell in which the driving motor is installed;
A front cap coupled to one end of the shell to receive the compression part; And
And a top plate coupled to one end of the front cap to receive the control unit.
The front cap is
A cap part coupled to the shell and having a suction port formed to be connected to the suction pipe; And
And a plate part formed integrally with the cap part to define the second space part and the third space part, and a communication hole formed to communicate with the second space part and the third space part. 5. The method of claim 4,
And the suction port is partitioned into the second space side suction port and the third space side suction port by the plate part. A casing having a sealed inner space;
A drive motor installed in the inner space of the casing and having a stator and a rotor;
A crank shaft coupled to the rotor of the drive motor;
A compression unit including a fixed scroll having a fixed wrap coupled to the crankshaft and having a swing scroll having a swing wrap and a pair of compression chambers engaged with the swing wrap of the swing scroll; And
And a control unit electrically connected to the drive motor and installed in the inner space of the casing to control the drive motor.
The inner space of the casing,
It is divided into a first space portion in which the drive motor is installed and the discharge tube communicates, a second space portion in which the compression unit is installed and the suction tube communicates, and a third space portion in which the control unit is installed,
The control unit is installed in a partition member for partitioning the second space portion and the third space portion, the partition member is a horizontal scroll compressor having a heat dissipation portion is formed to contact the refrigerant sucked into the casing. The method according to claim 6,
The heat dissipation unit is a horizontal scroll compressor is formed with a plurality of heat dissipation fins on one side of the partition member belonging to the second space. The method according to claim 6,
The heat dissipation unit has a refrigerant passage communicating with the suction pipe is formed inside the partition member,
And the outlet of the refrigerant passage is formed to communicate with the second space part. 7. The method according to claim 1 or 6,
The casing is a horizontal scroll compressor having a terminal portion that is electrically connected to the drive motor and the control unit. 7. The method according to claim 1 or 6,
A suction port and a discharge port are formed in the fixed scroll, and a discharge cover is formed in the fixed scroll to form an intermediate space separated from the second space portion around the discharge port while separating the suction port and the discharge port. Combined,
At least one exhaust hole is formed in the periphery of the discharge port to communicate the intermediate space and the first space portion. 7. The method according to claim 1 or 6,
The fixed wrap and the swing wrap are each formed of a first uniform section, a variable section and a second uniform section continuously from the end of the wrap to the end of the wrap;
And a wrap thickness of the second uniform section is thicker than the wrap thickness of the first uniform section.

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