KR102652240B1 - Air conditioner - Google Patents

Abstract

An air conditioner according to the idea of the present invention is a compressor having an inlet through which refrigerant is sucked and an outlet through which compressed refrigerant is discharged, a four-way valve that switches the flow path during cooling and heating operation, a valve body, and connected to the outlet. a four-way valve having a D port that protrudes from the valve body in a first direction and an S port that protrudes from the valve body in a second direction opposite to the first direction to be connected to the inlet; and a compressor pipe having a discharge pipe connecting the outlet and the D port, and a suction pipe connecting the inlet and the S port. Includes, one of the discharge pipe and the suction pipe has two curved portions and the other has one curved portion. With this structure, piping stress reliability is ensured, material costs are reduced, and the compressor room can be compacted.

Description

Air conditioner{AIR CONDITIONER}

The present invention relates to air conditioners, and specifically to the piping structure of air conditioners.

An air conditioner is a device that is equipped with a compressor, condenser, expansion valve, evaporator, blower fan, etc., and controls indoor temperature, humidity, airflow, etc. using a refrigeration cycle. The air conditioner may include an indoor unit disposed indoors and an outdoor unit disposed outdoors.

The outdoor unit includes a compressor, outdoor heat exchanger, blower, expansion mechanism, four-way valve, etc., and the four-way valve switches the flow path between the cooling mode and heating mode of the air conditioner.

The four-way valve has four ports, and each port is connected to the inlet and outlet of the compressor, the indoor heat exchanger, and the outdoor heat exchanger through piping. In this structure, when the compressor operates, vibration generated from the compressor is transmitted to the pipe, and the vibration of the pipe can be reduced or amplified depending on the length, shape, density, etc. of the pipe. In particular, when the operating frequency of the compressor and the natural frequency of the pipe match, resonance may occur, which may significantly increase the vibration of the pipe and cause cracks.

One aspect of the present invention discloses a piping structure for an air conditioner that can reduce piping vibration and ensure reliability of the piping structure, and an air conditioner having the same.

One aspect of the present invention discloses a piping structure for an air conditioner that can reduce material costs and compact a compressor room by minimizing the piping length, and an air conditioner having the same.

According to the idea of the present invention, an air conditioner is a compressor having an inlet through which refrigerant is sucked and an outlet through which compressed refrigerant is discharged; a four-way valve that switches the flow path during cooling and heating operation; a valve body; and an outlet connected to the outlet. a four-way valve having a D port that protrudes from the valve body in a first direction to be connected to the inlet, and an S port that protrudes from the valve body in a second direction opposite to the first direction to be connected to the inlet; and a compressor pipe having a discharge pipe connecting the outlet and the D port, and a suction pipe connecting the inlet and the S port. Includes, one of the discharge pipe and the suction pipe has two curved portions and the other has one curved portion.

The central axis of the D port and the central axis of the S port may be included in a plane including the central axis of the inlet and the central axis of the outlet.

The central axis of the D port and the central axis of the S port may be inclined with respect to a plane including the central axis of the inlet and the central axis of the outlet.

The central axis of the inlet and the central axis of the outlet may be parallel to each other.

The central axis of the D port and the central axis of the S port may coincide with each other.

The valve body has a cylindrical shape, and the D port and the S port may protrude in a direction perpendicular to the axial direction of the valve body. The D port and the S port may protrude from the center of the valve body. there is.

The four-way valve may be disposed at an angle so that the D port is located higher than the S port.

The discharge pipe includes a first pipe straight portion coupled to the D port, a second pipe straight portion coupled to the outlet, and a third pipe straight portion extending between the first pipe straight portion and the second pipe straight portion. It may include a first pipe curved portion connecting the first pipe straight portion and the third pipe straight portion, and a second pipe curved portion connecting the second pipe straight portion and the third pipe straight portion.

The suction pipe may include a first pipe straight portion coupled to the S port, a second pipe straight portion coupled to the inlet, and a pipe curved portion connecting the first pipe straight portion and the second pipe straight portion. there is.

The four-way valve may be disposed at an angle so that the S port is located higher than the D port.

The S port and the D port may be located at corresponding heights.

In another aspect, according to the spirit of the present invention, an air conditioner includes: a compressor having an inlet through which refrigerant is sucked and an outlet through which compressed refrigerant is discharged; and an outdoor heat exchanger and an indoor heat exchanger; and a four-way valve that switches the flow path during cooling and heating operation, comprising a D port connected to the outlet, an S port connected to the inlet, a C port connected to the outdoor heat exchanger, and an E connected to the indoor heat exchanger. a four-way valve having a port; Includes, wherein the D port is directly connected to the outlet or the S port is directly connected to the inlet.

The S port may be inserted and coupled to the inlet.

The four-way valve includes a valve body having a cylindrical shape, the D port protrudes from the valve body in a first direction perpendicular to the axial direction of the valve body, and the S port protrudes from the valve body in the first direction. It may include a first port straight portion protruding in a second direction opposite to the first port straight portion, a second port straight portion coupled to the inlet, and a port curved portion connecting the first port straight portion and the second port straight portion. .

The angle between the first port straight portion and the second port straight portion may be 20 to 90 degrees.

The air conditioner further includes an outdoor heat exchanger pipe connecting the outdoor heat exchanger and the C port, wherein the C port is coupled to a fourth port straight portion parallel to the first port straight portion and the outdoor heat exchanger pipe. a fifth port straight portion and a second port curved portion connecting the fourth port straight portion and the fifth port straight portion, and the second port curved portion may be bent in an opposite direction to the port curved portion.

It further includes an indoor heat exchanger pipe connecting the indoor heat exchanger and the E port, wherein the E port includes a fourth port straight portion parallel to the first port straight portion and a fifth port coupled to the indoor heat exchanger pipe. It includes a straight part and a second port curved part connecting the fourth port straight part and the fifth port straight part, and the second port curved part can be bent in a direction opposite to the port curved part.

The D port may be inserted and coupled to the outlet.

The four-way valve includes a valve body having a cylindrical shape, and the D port includes a first port straight portion protruding from the valve body in a first direction perpendicular to the axial direction of the valve body, and a first port coupled to the outlet. It may include a two-port straight portion and a port curved portion connecting the first port straight portion and the second port straight portion.

According to the spirit of the present invention, the four-way valve is close to or directly connected to the compressor, so that the compressor and the four-way valve can be substantially integrated and vibrate during operation of the compressor. Accordingly, the natural frequency of the pipe moves outside the operating range of the compressor, and the reliability of pipe stress can be secured.

According to the spirit of the present invention, the length of the pipe can be minimized, material costs can be reduced, and the compressor room can be compact.

According to the idea of the present invention, the four-way valve can be appropriately arranged so as not to interfere with surrounding structures such as a control box or reactor while having integrated behavior characteristics of the four-way valve and the compressor.

1 and 2 are diagrams showing a refrigerant circuit of an air conditioner according to a first embodiment of the present invention, where FIG. 1 is a diagram showing the refrigerant circuit during a cooling operation, and FIG. 2 is a diagram showing the refrigerant circuit during a cooling operation.
Figure 3 is a perspective view showing a piping structure connecting a compressor and a four-way valve according to the first embodiment of the present invention.
Figure 4 is a side view showing a piping structure connecting a compressor and a four-way valve according to the first embodiment of the present invention.
Figure 5 is a plan view showing a piping structure connecting a compressor and a four-way valve according to the first embodiment of the present invention.
Figure 6 is a side view showing a piping structure connecting a compressor and a four-way valve according to a second embodiment of the present invention.
Figure 7 is a side view showing a piping structure connecting a compressor and a four-way valve according to a third embodiment of the present invention.
Figure 8 is a side view showing a piping structure connecting a compressor and a four-way valve according to a fourth embodiment of the present invention.
Figure 9 is a perspective view showing a four-way valve according to a fourth embodiment of the present invention.
Figure 10 is a side view showing a four-way valve according to a fourth embodiment of the present invention.
Figure 11 is a side view showing a piping structure connecting a compressor and a four-way valve according to a fifth embodiment of the present invention.
Figure 12 is a perspective view showing a four-way valve according to a fifth embodiment of the present invention.
Figure 13 is a side view showing a four-way valve according to a fifth embodiment of the present invention.
Figure 14 is a side view showing the piping structure connecting the compressor and the four-way valve according to the sixth embodiment of the present invention.
Figure 15 is a perspective view showing a four-way valve according to a sixth embodiment of the present invention.
Figure 17 is a perspective view showing a piping structure connecting a compressor and a four-way valve according to the seventh embodiment of the present invention.
Figure 18 is a side view showing a piping structure connecting a compressor and a four-way valve according to the seventh embodiment of the present invention.
Figure 19 is a plan view showing a piping structure connecting a compressor and a four-way valve according to the seventh embodiment of the present invention.

Since the embodiments described in this specification are only the most preferred embodiments of the present invention and do not represent the entire technical idea of the present invention, various equivalents or modifications that can replace them at the time of filing the present invention are also available. It should be understood as included within the scope of rights.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as include or have are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are intended to indicate the presence of one or more other features, numbers, or steps. , does not exclude in advance the possibility of the existence or addition of operations, components, parts, or combinations thereof.

Terms containing ordinal numbers, such as first, second, etc., used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms refer to one component as another. It is used only for the purpose of distinguishing it from its components.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

1 and 2 are diagrams illustrating a refrigerant circuit of an air conditioner according to a first embodiment of the present invention. Figure 1 is a diagram showing the refrigerant circuit during cooling operation, and Figure 2 is a diagram showing the refrigerant circuit during cooling operation. .

As shown in FIGS. 1 and 2, the air conditioner 1 includes an indoor unit 2, an outdoor unit 5, and piping connecting them.

The indoor unit 2 includes an indoor heat exchanger 3 and a blower fan 4, and the outdoor unit 5 includes an outdoor heat exchanger 6, a blower fan 7, a compressor 10, and an expansion mechanism. (8), and may include a four-way valve (20) and a service valve (9).

The compressor 10 may be composed of a single inverter compressor whose compression capacity varies depending on the input frequency, or may be composed of a combination of a plurality of constant-speed compressors with a constant compression capacity.

The compressor 10 may include a compressor body 11 including a driving unit and a compression unit, and an accumulator 12 for filtering liquid refrigerant from the refrigerant heading toward the compressor main body 11. The compressor body 11 may be a rotary compressor. The compressor 10 may include an inlet 15 through which refrigerant is sucked, and an outlet 16 through which the sucked refrigerant is compressed and discharged. The accumulator 12 can filter out the liquid refrigerant from the refrigerant flowing from the four-way valve 20 to the compressor 10, that is, provide only the gaseous refrigerant to the compressor body 11.

The indoor heat exchanger 3 may function as an evaporator in the cooling mode of FIG. 1 and as a condenser in the heating mode of FIG. 2. The outdoor heat exchanger 6 may function as a condenser in the cooling mode of FIG. 1 and as an evaporator in the heating mode of FIG. 2 .

The expansion mechanism (8) can expand the refrigerant passing between the indoor heat exchanger (3) and the outdoor heat exchanger (6). The expansion mechanism 8 may be comprised of an electronic expansion valve whose opening value is variable so that the amount of refrigerant can be adjusted.

The service valve 9 may be installed in the pipe to connect the pipe on the indoor unit 2 side and the pipe on the outdoor unit 5 and charge the refrigerant.

The four-way valve 20 can switch the flow path to change the flow of refrigerant according to the user's selection. That is, the four-way valve 20 can guide the refrigerant discharged from the compressor 10 to the indoor heat exchanger 3 or the outdoor heat exchanger 6.

This four-way valve 20 may include a valve body 21 and four ports 25, 26, 27, and 28 protruding from the valve body 21. The four ports (25, 26, 27, 28) are the D port (25) connected to the outlet (16) of the compressor (10), and the S port (25) connected to the inlet (15) of the compressor (10). It may include (26), a C port (27) provided to be connected to the outdoor heat exchanger (6), and an E port (28) provided to be connected to the indoor heat exchanger (3).

The four-way valve 20 has the D port 25 and C port 27 connected in the cooling mode of FIG. 1, and the S port 26 and E port 28 are connected in the heating mode of FIG. 2. By connecting the D port 25 and the E port 28 and simultaneously connecting the S port 26 and the C port 27, the flow of refrigerant can be switched.

That is, in the cooling mode of FIG. 1, when the D port (25) and the C port (27) are connected and the S port (26) and the E port (28) are connected at the same time, the compressor (10) is connected to the four-way valve (20). The refrigerant flowing in flows out to the outdoor heat exchanger (6), and the refrigerant flowing in from the indoor heat exchanger (3) to the four-way valve (20) flows out to the compressor (1).

In addition, when the D port 25 and the E port 28 are connected at the same time as the S port 26 and the C port 27 are connected in the heating mode of FIG. 2, the four-way valve 20 in the compressor 10 ) flows out to the indoor heat exchanger (3), and the refrigerant flowing from the outdoor heat exchanger (6) to the four-way valve (20) flows out to the compressor (1).

The piping of the air conditioner (1) includes a compressor piping (30) connecting the compressor (2) and the four-way valve (20), and an outdoor heat exchanger piping (60) connecting the outdoor heat exchanger (6) and the four-way valve (20). ) and an indoor heat exchanger pipe 70 connecting the indoor heat exchanger 3 and the four-way valve 20. The compressor pipe 30 includes a discharge pipe 40 connecting the outlet 16 of the compressor 10 and the D port 25 of the four-way valve 20, the inlet 15 of the compressor 10, and the four-way valve ( It may include a suction pipe 50 connecting the S port 26 of 20).

There have been attempts to lengthen the compressor pipe 30 or form it into a loop shape in order to alleviate the vibration of the pipe when the compressor 10 is operating. However, when applying this structure, material costs increase and the pipe structure is complicated, so the compressor pipe 30 is not compressed. The space in the room can be greatly encroached upon. Furthermore, in recent air conditioners, inverter compressors with variable operating ranges are mainly used, so with the above structure, it is difficult to design the pipe's natural frequency to deviate from the wide operating range of the inverter compressor.

The piping structure of the air conditioner according to the embodiment of the present invention connects the four-way valve 20 close to or directly to the compressor 10 to move the natural frequency of the piping outside the operating area of the compressor 10, thereby ensuring reliability of piping stress. can be secured, material costs can be reduced, and the compaction of the compressor room can be realized. Hereinafter, the structure of the piping and four-way valve 20 of the air conditioner according to an embodiment of the present invention will be described in detail.

Figure 3 is a perspective view showing a piping structure connecting a compressor and a four-way valve according to the first embodiment of the present invention. Figure 4 is a side view showing a piping structure connecting a compressor and a four-way valve according to the first embodiment of the present invention. Figure 5 is a plan view showing a piping structure connecting a compressor and a four-way valve according to the first embodiment of the present invention. However, for convenience of explanation, the outdoor heat exchanger pipe 60 and the indoor heat exchanger pipe 70 are omitted in FIGS. 4 and 5.

As shown in FIGS. 3 to 5, the compressor 10 is placed on a support 18, and the compressor 10 may have a parallel upper surface 17. The compressor 10 has an inlet 15 through which refrigerant is sucked, and an outlet 16 through which the sucked refrigerant is compressed and discharged, and the inlet 15 and outlet 16 are each positioned substantially perpendicularly from the upper surface 17. It may have a protruding shape.

Additionally, the central axis Li of the inlet 15 and the central axis Lo of the outlet 16 may be substantially parallel to each other. That is, the central axis Li of the inlet 15 and the central axis Lo of the outlet 16 may be substantially included in one plane P.

The four-way valve 20 may include a valve body 21 and four ports 25, 26, 27, and 28 protruding from the valve body 21. The four ports (25, 26, 27, 28) are the D port (25) connected to the outlet (16) of the compressor (10), and the S port (25) connected to the inlet (15) of the compressor (10). It may include (26), a C port (27) provided to be connected to the outdoor heat exchanger (6), and an E port (28) provided to be connected to the indoor heat exchanger (3).

The valve body 21 may have a cylindrical shape. The valve body 21 may extend long in the axial direction A1. The D port 25 may protrude from the valve body 21 in a first direction perpendicular to the axial direction A1 of the valve body 21. The S port 26 may protrude from the valve body 21 in a second direction opposite to the first direction. Accordingly, the central axis Ld of the D port 25 and the central axis Ls of the S port 26 may be located on the same straight line. That is, the central axis (Ld) of the D port 25 and the central axis (Ls) of the S port 26 may coincide.

The length L1 between the D port 25 and the S port 26 may be greater than or correspond to the horizontal distance L2 between the inlet 15 and the outlet 16.

The D port 25 and the S port 26 may protrude from the center of the valve body 21 based on the axial direction A1 of the valve body 21. The C port 27 and E port 28 may protrude on both sides of the S port 26. The C port 27 and E port 28 may protrude in the same direction as the S port 26.

The four-way valve 20 has the central axis (Ld) of the D port (25) and the central axis (Ls) of the S port (26) aligned with the central axis (Li) of the inlet (15) and the central axis (Lo) of the outlet (16). ) can be arranged to be included in the plane (P) containing.

That is, when looking down toward the compressor 10 from above the compressor 10, the central axis Ld of the D port 25 of the four-way valve 20 and the central axis Ls of the S port 26 are aligned with the inlet ( 15) may coincide with a plane (P) including the central axis (Li) of the outlet (16) and the central axis (Lo) of the outlet (16).

In addition, the central axis (Ld) of the D port (25) and the central axis (Ls) of the S port (26) are positioned on the upper surface (17) of the compressor (10) so that the D port (25) is located higher than the S port (26). It can be formed at an angle with respect to . At this time, the discharge pipe 40 and the suction pipe 50 may each be formed to have two or less curved portions.

For example, the discharge pipe 40 may include two curved portions 44 and 45. That is, as shown in FIG. 4, the discharge pipe 40 includes a first pipe straight portion 41 coupled to the D port 25, a second pipe straight portion 42 coupled to the outlet 16, and , a third pipe straight portion 43 extending between the first pipe straight portion 41 and the second pipe straight portion 42, and the first pipe straight portion 41 and the third pipe straight portion 43. It may include a first pipe curved portion 44 connecting the , and a second pipe curved portion 45 connecting the second pipe straight portion 42 and the third pipe straight portion 43.

At this time, it may be preferable that the angle θ1 between the first pipe straight portion 41 and the upper surface 17 of the compressor is 20 to 70 degrees to facilitate the flow of refrigerant.

However, unlike this embodiment, the discharge pipe may be formed to have one curved portion (see FIG. 8, etc.).

Additionally, the suction pipe 50 may be formed to have one curved portion 53. That is, as shown in FIG. 4, the suction pipe 50 includes a first pipe straight portion 51 coupled to the S port 26, a second pipe straight portion 52 coupled to the inlet 15, and , It may include a pipe curved portion 53 connecting the first pipe straight portion 51 and the second pipe straight portion 52.

Since the first pipe straight portion 41 of the discharge pipe 40 and the first pipe straight portion 51 of the suction pipe 50 have the same inclination, the first pipe straight portion 51 of the suction pipe 50 ) The angle (θ1) of the upper surface 17 of the compressor may be 20 to 70 degrees.

As described above, the four-way valve 20 has the central axis Ld of the D port 25 and the central axis Ls of the S port 26 aligned with the central axis Li of the inlet 15 and the outlet 16. It is arranged to be included in the plane (P) including the central axis (Lo), and the four-way valve (20) is relative to the upper surface (17) of the compressor (10) such that the D port (25) is located higher than the S port (26). It is disposed inclinedly, and the discharge pipe 40 and the suction pipe 50 are each formed to have two or less curved parts, resulting in the compressor pipes 40 and 50 connecting the four-way valve 20 and the compressor 10. The length can be minimized and the four-way valve 20 can be close to the compressor 10. In addition, as the length of the compressor pipes 40 and 50 is minimized and the four-way valve 20 is close to the compressor 10, the natural frequency of the pipe is higher than the frequency of the operating range of the compressor 10, causing resonance. It may not occur.

Figure 6 is a side view showing a piping structure connecting a compressor and a four-way valve according to a second embodiment of the present invention. However, for convenience of explanation, the outdoor heat exchanger piping and indoor heat exchanger piping are omitted.

Configurations that are the same as those in the above-described embodiments may be assigned the same reference numerals and descriptions may be omitted.

Referring to FIG. 6, in the piping structure of the compressor and the four-way valve according to the second embodiment of the present invention, the four-way valve 20 is connected to the central axis Ld of the D port 25 and the central axis of the S port 26. The arrangement of (Ls) so that it is included in the plane P including the central axis Li of the inlet 15 and the central axis Lo of the outlet 16 is the same as in the first embodiment described above.

However, depending on the height difference between the compressor body 11 and the accumulator 12 of the compressor 10 or the spatial arrangement inside the outdoor unit 5, unlike the first embodiment described above, the four-way valve 20 is connected to the D port ( The central axis (Ld) of 25) and the central axis (Ls) of the S port 26 are formed to be inclined with respect to the upper surface 17 of the compressor 10 so that the S port 26 is located higher than the D port 25. You can.

The discharge pipe 240 may include two curved portions 244 and 245. The discharge pipe 240 includes a first pipe straight portion 241 coupled to the D port 25, a second pipe straight portion 242 coupled to the outlet 16, and a first pipe straight portion 241. A third pipe straight portion 243 extending between the second pipe straight portions 242, and a first pipe curved portion 244 connecting the first pipe straight portion 241 and the third pipe straight portion 243. ) and a second pipe curved portion 245 connecting the second pipe straight portion 242 and the third pipe straight portion 243.

At this time, the angle θ1 between the first pipe straight portion 241 and the upper surface 17 of the compressor may be preferably 20 to 70 degrees to facilitate the flow of refrigerant.

The suction pipe 250 may include one curved portion 253. The suction pipe 250 includes a first pipe straight portion 251 coupled to the S port 26, a second pipe straight portion 252 coupled to the inlet 15, and a first pipe straight portion 251. It may include a pipe curved portion 253 connecting the second pipe straight portion 252.

Figure 7 is a side view showing a piping structure connecting a compressor and a four-way valve according to a third embodiment of the present invention. However, for convenience of explanation, the outdoor heat exchanger piping and indoor heat exchanger piping are omitted.

Configurations that are the same as those in the above-described embodiments may be assigned the same reference numerals and descriptions may be omitted.

In the piping structure of the compressor and the four-way valve according to the third embodiment of the present invention, the four-way valve 20 has the central axis (Ld) of the D port (25) and the central axis (Ls) of the S port (26) inlet ( The arrangement so as to be included in the plane P including the central axis Li of 15) and the central axis Lo of the outlet 16 is the same as the first embodiment described above.

However, depending on the height difference between the compressor body 11 and the accumulator 12 of the compressor 10 or the spatial arrangement inside the outdoor unit 5, unlike the above-described embodiments, the central axis Ld of the D port 25 ) and the central axis (Ls) of the S port (26) is formed parallel to the upper surface (17) of the compressor (10), and the S port (26) and D port (25) can be located at corresponding heights. there is.

The discharge pipe 340 may include two curved portions 344 and 345. The discharge pipe 340 includes a first pipe straight portion 341 coupled to the D port 25, a second pipe straight portion 342 coupled to the outlet 16, and a first pipe straight portion 341. A third pipe straight portion 343 extending between the second pipe straight portions 342, and a first pipe curved portion 344 connecting the first pipe straight portion 341 and the third pipe straight portion 343. ) and a second pipe curved portion 345 connecting the second pipe straight portion 342 and the third pipe straight portion 343.

The suction pipe 350 may include one curved portion 353. The suction pipe 350 includes a first pipe straight portion 351 coupled to the S port 26, a second pipe straight portion 352 coupled to the inlet 15, and a first pipe straight portion 351. It may include a pipe curved portion 353 connecting the second pipe straight portion 352.

Figure 8 is a side view showing a piping structure connecting a compressor and a four-way valve according to a fourth embodiment of the present invention. Figure 9 is a perspective view showing a four-way valve according to a fourth embodiment of the present invention. Figure 10 is a side view showing a four-way valve according to a fourth embodiment of the present invention. However, in Figure 8, for convenience of explanation, the outdoor heat exchanger piping and the indoor heat exchanger piping are omitted.

Configurations that are the same as those in the above-described embodiments may be assigned the same reference numerals and descriptions may be omitted.

Referring to FIGS. 8 to 10 , unlike the above-described embodiments, the S port 426 of the four-way valve 420 may be provided to be directly connected to the inlet 15.

That is, the four-way valve 420 may include a valve body 421 and four ports 425, 426, 427, and 428 protruding from the valve body 421. The four ports (425, 426, 427, 428) are the D port (425) connected to the outlet (16) of the compressor (10), and the S port (425) connected to the inlet (15) of the compressor (10). It may include (426), a C port (427) connected to the outdoor heat exchanger (6), and an E port (428) connected to the indoor heat exchanger (3).

The S port 426 includes a first port straight portion 426a protruding from the valve body 421, a second port straight portion 426b provided to be coupled to the inlet 15, and a first port straight portion 426a. It may include a port curved portion 426c connecting the second port straight portion 426b. The angle θ3 between the first port straight portion 426a and the second port straight portion 426c may be 20 to 90 degrees. The second port straight portion 426b may be inserted into the inlet 15 and joined through welding or the like. An expanded portion with an expanded radius of the outer peripheral surface may be provided at the end of the second port straight portion 426b to facilitate coupling with the inlet 15.

Figure 11 is a side view showing the piping structure connecting the compressor and the four-way valve according to the fifth embodiment of the present invention. Figure 12 is a perspective view showing a four-way valve according to a fifth embodiment of the present invention. Figure 13 is a side view showing a four-way valve according to a fifth embodiment of the present invention. However, in FIG. 11 , the outdoor heat exchanger piping and the indoor heat exchanger piping are omitted for convenience of explanation.

Configurations that are the same as those in the above-described embodiments may be assigned the same reference numerals and descriptions may be omitted.

11 to 13, the S port 526 of the four-way valve 520 is bent and provided to be directly connected to the inlet 15, and the C port 527 and E port 528 of the four-way valve 520 ) may be bent in the opposite direction to the S port 526.

That is, as shown in FIG. 13, the S port 526 is bent downward by a predetermined angle θ4 with respect to the central axis Ld of the D port 525, and the C port 527 and E port ( 528) may be bent upward by a predetermined angle θ4. This is to minimize port interference when welding pipes so that welding can be easily performed.

The four-way valve 520 may include a valve body 521 and four ports 525, 526, 527, and 528 protruding from the valve body 521. The four ports (525, 526, 527, and 528) are a D port (525) connected to the outlet (16) of the compressor (10), and an S port (S port) connected to the inlet (15) of the compressor (10). It may include (526), a C port (527) provided to be connected to the outdoor heat exchanger (6), and an E port (528) provided to be connected to the indoor heat exchanger (3).

The S port 526 includes a first port straight portion 526a protruding from the valve body 521, a second port straight portion 526b provided to be coupled to the inlet 15, and a first port straight portion 526a. ) and a port curved portion 526c connecting the second port straight portion 526b. The second port straight portion 526b may be inserted into the inlet 15 and joined through welding or the like.

The C port 527 includes a fourth port straight portion 527a parallel to the first port straight portion 526a, a fifth port straight portion 527b provided to be coupled to the outdoor heat exchanger pipe 60, and a fourth port straight portion 527b that is parallel to the first port straight portion 526a. It may include a second port curved portion 527c connecting the 4-port straight portion 527a and the fifth port straight portion 527b. The second port curved portion 527c may be bent in the opposite direction to the port curved portion 526c.

The E port 528 includes a fourth port straight portion 528a parallel to the first port straight portion 526a, a fifth port straight portion 528b provided to be coupled to the indoor heat exchanger pipe 70, and a fourth port straight portion 528b that is parallel to the first port straight portion 526a. It may include a second port curved portion 528c connecting the 4-port straight portion 528a and the fifth port straight portion 528b. The second port curved portion 528c may be bent in the opposite direction to the port curved portion 526c.

Figure 14 is a side view showing the piping structure connecting the compressor and the four-way valve according to the sixth embodiment of the present invention. Figure 15 is a perspective view showing a four-way valve according to a sixth embodiment of the present invention. However, in Figure 14, for convenience of explanation, the outdoor heat exchanger piping and the indoor heat exchanger piping are omitted.

Configurations that are the same as those in the above-described embodiments may be assigned the same reference numerals and descriptions may be omitted.

Referring to FIGS. 14 and 15 , the D port 625 of the four-way valve 620 may be formed to be directly connected to the outlet 16.

That is, the four-way valve 620 may include a valve body 621 and four ports 625, 626, 627, and 628 protruding from the valve body 621. The four ports (625, 626, 627, 628) are a D port (625) connected to the outlet (16) of the compressor (10), and an S port (625) connected to the inlet (15) of the compressor (10). It may include (626), a C port (627) provided to be connected to the outdoor heat exchanger (6), and an E port (628) provided to be connected to the indoor heat exchanger (2).

The D port 625 includes a first port straight portion 625a protruding from the valve body 621, a second port straight portion 625b provided to be coupled to the outlet 16, and a first port straight portion 625a. ) and a port curved portion 625c connecting the second port straight portion 625b. An expanded portion with an expanded radius of the outer circumferential surface may be provided at the end of the second port straight portion 625b to facilitate coupling with the outlet 16.

The second port straight portion 626b may be inserted into the outlet 16 and joined through welding or the like.

14 and 15, the D port 625 is directly connected to the outlet 16, and the S port 626 is directly connected to the inlet 15, but this is not limited to this, and only the D port 625 is connected to the outlet 16. Of course, it is also possible to connect directly to (16), and the S port (626) is connected to the inlet (15) through a pipe.

Figure 17 is a perspective view showing a piping structure connecting a compressor and a four-way valve according to the seventh embodiment of the present invention. Figure 18 is a side view showing the piping structure connecting the compressor and the four-way valve according to the seventh embodiment of the present invention. Figure 19 is a plan view showing the piping structure connecting the compressor and the four-way valve according to the seventh embodiment of the present invention.

17 to 19, a piping structure connecting a compressor and a four-way valve according to another embodiment of the present invention will be described. Configurations that are the same as those in the above-described embodiments may be assigned the same reference numerals and descriptions may be omitted.

The piping structure connecting the compressor and the four-way valve according to the seventh embodiment of the present invention is the same as the piping structure of FIG. 3, except that the central axis (Ld) of the D port (25) and the S port (26) The central axis Ls may be formed to be inclined with respect to the plane P including the central axis Li of the inlet 15 and the central axis Lo of the outlet 16.

That is, the central axis (Ld) of the D port 25 and the central axis (Ls) of the S port 26 include the central axis (Li) of the inlet (15) and the central axis (Lo) of the outlet (16). The four-way valve 20 may be disposed at an angle so as not to be included in the plane P. The discharge pipe 740 may include two curved portions 744 and 745. That is, the discharge pipe 740 includes a first pipe straight portion 741 coupled to the D port 25, a second pipe straight portion 742 coupled to the outlet 16, and a first pipe straight portion 41. ) and a third pipe straight portion 743 extending between the second pipe straight portion 42, and a first pipe curved portion connecting the first pipe straight portion 741 and the third pipe straight portion 743. It may include (744) and a second pipe curved portion 745 connecting the second pipe straight portion 742 and the third pipe straight portion 743.

The suction pipe 750 may be formed to have one curved portion 753. That is, the suction pipe 750 includes a first pipe straight portion 751 coupled to the S port 26, a second pipe straight portion 752 coupled to the inlet 15, and a first pipe straight portion 751. ) and a pipe curved portion 753 connecting the second pipe straight portion 752.

With the above configuration, the length of the compressor pipes 740 and 750 connecting the four-way valve 20 and the compressor 10 can be minimized and the four-way valve 20 can be brought close to the compressor 10. In addition, as the length of the compressor pipes 740 and 750 is minimized and the four-way valve 20 is close to the compressor 10, the natural frequency of the pipe is higher than the frequency of the operating region of the compressor 10, causing resonance. It may not occur. In other words, the behavior characteristics of the compressor 10 and the four-way valve 20 may be integrated.

In addition, the central axis (Ld) of the D port 25 and the central axis (Ls) of the S port 26 include the central axis (Li) of the inlet (15) and the central axis (Lo) of the outlet (16). By arranging the four-way valve 20 at an angle so as not to be included in the plane P, the integrated behavior characteristics of the four-way valve 20 and the compressor 20 are maintained while interference with surrounding structures such as a control box or reactor can be avoided. .

Although the technical idea of the present invention has been described above through specific examples, the scope of the present invention is not limited to these examples. Various embodiments that can be modified or modified by a person skilled in the art without departing from the gist of the technical idea of the present invention as specified in the patent claims will also fall within the scope of the present invention.

1: Air conditioner 2: Indoor unit
3: Outdoor unit 4: Indoor heat exchanger
5: blowing fan 6: expansion mechanism
8, 9: service valve 10: compressor
11: Compressor body 12: Accumulator
15: inlet 16: outlet
20: four-way valve 21: valve body
25: D port 26: S port
27: C port 28: E port
30: Compressor piping 40: Discharge piping
50: Suction pipe 60: Outdoor heat exchanger pipe
70: Indoor heat exchanger piping

Claims (20)

A compressor including an accumulator having an inlet through which refrigerant is sucked, and a compressor body having an outlet through which compressed refrigerant is discharged;
A four-way valve that switches flow paths during cooling and heating operation, comprising a valve body, a D port protruding from the valve body in a first direction to be connected to the outlet, and a D port extending from the valve body in the first direction to be connected to the inlet. a four-way valve having an S port protruding in a second direction opposite to the; and
a compressor pipe having a discharge pipe connecting the outlet and the D port, and a suction pipe connecting the inlet and the S port; Including,
One of the discharge pipe and the suction pipe has two curved sections, and the other has one curved section,
The first direction and the second direction are inclined with respect to the upper surface of the compressor body,
An air conditioner wherein the central axis of the D port and the central axis of the S port are inclined with respect to a plane including the central axis of the inlet and the central axis of the outlet. delete delete According to paragraph 1,
An air conditioner wherein the central axis of the inlet and the central axis of the outlet are parallel to each other. According to paragraph 1,
An air conditioner wherein the central axis of the D port and the central axis of the S port coincide with each other. According to paragraph 1,
The valve body has a cylindrical shape,
The D port and the S port protrude in a direction perpendicular to the axial direction of the valve body. According to clause 5,
An air conditioner wherein the D port and the S port protrude from the center of the valve body. According to paragraph 1,
An air conditioner wherein the D port is positioned higher than the S port. According to paragraph 1,
The discharge pipe includes a first pipe straight portion coupled to the D port, a second pipe straight portion coupled to the outlet, and a third pipe straight portion extending between the first pipe straight portion and the second pipe straight portion. an air conditioner including a first pipe curved portion connecting the first pipe straight portion and the third pipe straight portion, and a second pipe curved portion connecting the second pipe straight portion and the third pipe straight portion. . According to paragraph 1,
The air intake pipe includes a first pipe straight portion coupled to the S port, a second pipe straight portion coupled to the inlet, and a pipe curved portion connecting the first pipe straight portion and the second pipe straight portion. Harmonizer. According to paragraph 1,
An air conditioner wherein the S port is positioned higher than the D port. According to paragraph 1,
An air conditioner in which the S port and the D port are located at corresponding heights. A compressor including an accumulator having an inlet through which refrigerant is sucked, and a compressor body having an outlet through which compressed refrigerant is discharged;
outdoor heat exchanger;
indoor heat exchanger; and
A four-way valve that switches flow paths during cooling and heating operation, comprising a valve body, a D port protruding from the valve body in a first direction and connected to the outlet, and a second valve opposite to the first direction from the valve body. a four-way valve that protrudes in one direction and has an S port connected to the inlet, a C port connected to the outdoor heat exchanger, and an E port connected to the indoor heat exchanger; Including,
The D port is directly connected to the outlet or the S port is directly connected to the inlet,
The first direction and the second direction are inclined with respect to the upper surface of the compressor body,
An air conditioner wherein the central axis of the D port and the central axis of the S port are inclined with respect to a plane including the central axis of the inlet and the central axis of the outlet. According to clause 13,
The S port is an air conditioner in which the S port is inserted and coupled to the inlet. According to clause 14,
The valve body of the four-way valve has a cylindrical shape,
The D port protrudes from the valve body in the first direction perpendicular to the axial direction of the valve body,
The S port is a port connecting a first port straight portion protruding from the valve body in the second direction, a second port straight portion coupled to the inlet, and the first port straight portion and the second port straight portion. An air conditioner including a curved portion. According to clause 15,
An air conditioner wherein the angle between the first port straight portion and the second port straight portion is 20 to 90 degrees. According to clause 15,
Further comprising an outdoor heat exchanger pipe connecting the outdoor heat exchanger and the C port,
The C port connects a fourth port straight portion parallel to the first port straight portion, a fifth port straight portion coupled to the outdoor heat exchanger piping, and the fourth port straight portion and the fifth port straight portion. Includes a second port curved portion,
An air conditioner wherein the second port curved portion is bent in an opposite direction to the port curved portion. According to clause 15,
Further comprising an indoor heat exchanger pipe connecting the indoor heat exchanger and the E port,
The E port connects a fourth port straight portion parallel to the first port straight portion, a fifth port straight portion connected to the indoor heat exchanger pipe, and a fourth port straight portion and the fifth port straight portion. Includes a second port curved portion,
An air conditioner wherein the second port curved portion is bent in an opposite direction to the port curved portion. According to clause 13,
An air conditioner in which the D port is inserted and coupled to the outlet. According to clause 19,
The valve body of the four-way valve has a cylindrical shape,
The D port includes a first port straight portion protruding from the valve body in the first direction perpendicular to the axial direction of the valve body, a second port straight portion coupled to the outlet, and the first port straight portion An air conditioner including a port curved portion connecting the second port straight portion.

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