CN220489444U - Four-way valve pipeline module and variable-frequency air-cooled heat pump unit - Google Patents

Abstract

The utility model provides a four-way valve pipeline module and a variable-frequency air-cooled heat pump unit, which comprises a valve body, wherein the valve body is respectively connected with an exhaust pipe, an air suction pipe, a condensing pipe and an evaporating pipe, and the exhaust pipe comprises a first U-shaped bent pipe section, a damping soft pipe section, a second U-shaped bent pipe section, a first control valve, a first transition section, a reducing joint and a second transition section which are sequentially connected; the air suction pipe comprises a third U-shaped bent pipe section and a fourth U-shaped bent pipe section which are connected; the condensing tube comprises a fifth U-shaped bent tube section, one end of the fifth U-shaped bent tube section is connected with a third interface of the valve body, and the other end of the fifth U-shaped bent tube section is provided with a third reserved interface connected with the condensing coil; the evaporating pipe comprises a sixth U-shaped bent pipe section and a bent pipe section which are connected. The utility model reasonably and compactly arranges the pipeline space by setting the installation angles and the positions among different pipelines so as to ensure the installation space of the unit driving box and the main control box and facilitate the installation operation and the subsequent debugging of other parts of the unit by operators.

Description

Four-way valve pipeline module and variable-frequency air-cooled heat pump unit

Technical Field

The utility model belongs to the field of air conditioning systems, and particularly relates to a four-way valve pipeline module and a variable-frequency air-cooled heat pump unit.

Background

The four-way valve pipeline module of the air conditioning system is generally connected with the variable frequency compressor, the evaporator, the gas-liquid separator and other components, and the layout space of the whole air conditioning system is limited, so that the layout design of the four-way valve pipeline module is particularly critical. In particular to a unit which has more than two systems and is designed by an air cooling coil pipe as a U-shaped independent air system, the design of a four-way valve pipeline module is also limited by the height direction.

When the variable frequency compressor operates at high frequency, the exhaust pipeline vibrates greatly, and if the variable frequency compressor is not treated, the pipeline is cracked and leakage occurs. Moreover, when the variable frequency compressor is just started, the system pressure difference cannot be established for circulation due to low frequency, the common variable frequency compressor is designed into a high-pressure cavity, the position of an exhaust pipe is low, and when a unit is stopped, the risk of liquid refrigerant backflow and compressor liquid impact occurs if the unit is not controlled.

Disclosure of Invention

In view of the above, the present utility model is directed to a four-way valve pipeline module and a variable frequency air-cooled heat pump unit, so as to solve at least one of the above problems.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

in a first aspect, the utility model provides a four-way valve pipeline module, which comprises a valve body, wherein the valve body is respectively connected with an exhaust pipe, an air suction pipe, a condensing pipe and an evaporating pipe:

the exhaust pipe comprises a first U-shaped bent pipe section, a damping hose section, a second U-shaped bent pipe section, a first control valve, a first extending section, a first transition section, a reducing joint and a second transition section which are sequentially connected, wherein the second transition section is connected with a first interface of the valve body, and the first U-shaped bent pipe section is provided with a first reserved interface connected with an exhaust port of the compressor;

the air suction pipe comprises a third U-shaped bent pipe section and a fourth U-shaped bent pipe section which are connected, the third U-shaped bent pipe section is connected with a second connector of the valve body, and the fourth U-shaped bent pipe section is provided with a second reserved connector connected with the gas-liquid separator;

the condensing pipe comprises a fifth U-shaped bent pipe section, one end of the fifth U-shaped bent pipe section is connected with a third interface of the valve body, and a third reserved interface connected with the condensing coil is arranged at the other end of the fifth U-shaped bent pipe section;

the evaporation pipe comprises a sixth U-shaped bent pipe section and a bent pipe section which are connected, the sixth U-shaped bent pipe section is connected with a fourth interface of the valve body, and the bent pipe section is provided with a fourth reserved interface connected with an evaporator air pipe.

Further, the first control valve is a one-way stop valve, and the setting direction of the first control valve is the same as the exhaust flow direction.

Further, the first transition section and the second transition section are right-angle bend sections;

the first straight section is provided with a second control valve, a first sensor and a second sensor, the second control valve is a needle valve, the first sensor is a high-voltage switch, and the second sensor is a high-voltage sensor.

Further, a third sensor and a temperature sensing clamp are arranged on the air suction pipe, the third sensor is a low-voltage sensor, and the temperature sensing clamp is used for placing an air suction temperature sensor.

Further, the bent pipe section comprises a third transition section, a fourth transition section, a second straight section and a cantilever section which are sequentially connected;

the third transition section is connected with the sixth U-shaped bent pipe section;

and a fourth reserved interface arranged at the end of the cantilever section far away from the second straight section is connected with an evaporator air pipe.

Further, the sixth U-shaped bent pipe section is perpendicular to the axial center line L1 of the valve body;

the axis of the third transition section and the axial center line L2 of the second straight section form an included angle of 45 degrees;

the axis of the fourth transition section initial section and the axial center line L2 of the second straight section form an included angle of 135 degrees.

Further, the axial line of the fifth U-shaped bent pipe section and the axial central line L1 of the valve body form an included angle of 21 degrees;

the axes of the first transition section, the reducing joint and the second transition section are collinear, and an included angle of 35 degrees is formed between the axes of the first transition section, the reducing joint and the second transition section and the axial center line L1 of the valve body;

a horizontal line L3 parallel to the axial centerline L1 of the valve body;

the axis of the first U-shaped bent pipe section forms an included angle of 37 degrees with the horizontal line L3;

the axis of the third U-shaped bent pipe section and the horizontal line L3 form an included angle of 83 degrees.

Further, the bent pipe section comprises a fifth transition section, a sixth transition section and a third straight section which are sequentially connected;

the fifth transition section is connected with the sixth U-shaped bent pipe section;

and the third straight extension section is far away from a fourth reserved interface arranged on the sixth transition section and is connected with an evaporator air pipe.

Further, all pipe sections of the exhaust pipe are collinear and form an included angle of 40 degrees with the axial center line L1 of the valve body;

the axial line of the fifth U-shaped bent pipe section and the axial central line L1 of the valve body form an included angle of 21 degrees;

the axes of the initial section, the fifth transition section and the sixth U-shaped bent pipe section of the sixth transition section are collinear, and an included angle of 60 degrees is formed between the axes of the initial section, the fifth transition section and the sixth U-shaped bent pipe section and the axial center line L1 of the valve body;

the axis of the initial section of the sixth transition section and the axis of the third straight section form an included angle of 120 degrees.

Based on the same inventive concept, the utility model also provides a variable frequency air-cooled heat pump unit, which comprises a four-way valve pipeline module:

the four-way valve pipeline module is the four-way valve pipeline module of the first aspect.

Compared with the prior art, the four-way valve pipeline module and the variable-frequency air-cooled heat pump unit have the following beneficial effects:

(1) According to the four-way valve pipeline module and the variable-frequency air-cooled heat pump unit, the pipeline space is reasonably and compactly arranged by setting the installation angles and the positions among different pipelines, so that the installation space of a unit driving box and a main control box is ensured, and the installation operation and the subsequent debugging of other parts of the unit by operators are facilitated; meanwhile, vibration stress of an exhaust pipeline is effectively reduced by arranging the damping hose, and no-pressure-difference starting and refrigerant backflow of the compressor are avoided by arranging the control valve, so that reliable and stable operation of a refrigerant system is ensured.

(2) According to the four-way valve pipeline module and the variable-frequency air-cooled heat pump unit, unit maintenance and parameter monitoring are achieved through different sensors and control valves, and efficient and stable operation of an air conditioning system is guaranteed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of a four-way valve pipeline module according to an embodiment of the utility model;

FIG. 2 is a top view of a four-way valve pipeline module according to an embodiment of the utility model;

fig. 3 is a schematic diagram of a part of a detailed structure of a variable frequency air-cooled heat pump unit according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of a four-way valve pipeline module according to a second embodiment of the present utility model;

FIG. 5 is a top view of a four-way valve pipeline module according to a second embodiment of the present utility model;

fig. 6 is a schematic diagram of a part of a detailed structure of a variable frequency air-cooled heat pump unit according to a second embodiment of the present utility model;

fig. 7 is a top view of a variable frequency air-cooled heat pump unit according to a third embodiment of the present utility model.

Reference numerals illustrate:

1. an exhaust pipe; 11. a first U-shaped bend section; 12. damping hose sections; 13. a second U-shaped bend section; 14. a first control valve; 15. a first extension; 16. a first transition section; 17. a reducing joint; 18. a second transition section; 19. a second control valve; 110. a first sensor; 111. a second sensor; 2. an air suction pipe; 21. a third U-shaped bend section; 22. a fourth U-shaped bend section; 23. a third sensor; 24. a temperature sensing clamp; 3. a condensing tube; 31. a fifth U-shaped bend section; 4. an evaporation tube; 41. a sixth U-shaped bend section; 42. a third transition section; 43. a fourth transition section; 44. a second straight extension; 45. a cantilever section; 46. a fifth transition section; 47. a sixth transition section; 48. a third straight extension; 5. and a valve body.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

Referring to fig. 1, the present embodiment provides a four-way valve pipeline module, which includes a valve body 5, wherein the valve body 5 is respectively connected with an exhaust pipe 1, an air suction pipe 2, a condensation pipe 3 and an evaporation pipe 4:

the exhaust pipe 1 comprises a first U-shaped bent pipe section 11, a damping hose section 12, a second U-shaped bent pipe section 13, a first control valve 14, a first extending section 15, a first transition section 16, a reducing joint 17 and a second transition section 18 which are sequentially connected, wherein the second transition section 18 is connected with a first interface (namely a D port) of the valve body 5, and the first U-shaped bent pipe section 11 is provided with a first reserved interface connected with an exhaust port of a compressor;

the air suction pipe 2 comprises a third U-shaped bent pipe section 21 and a fourth U-shaped bent pipe section 22 which are connected, the third U-shaped bent pipe section 21 is connected with a second interface of the valve body 5, and the fourth U-shaped bent pipe section 22 is provided with a second reserved interface (namely an S port) connected with the gas-liquid separator;

the condensing tube 3 comprises a fifth U-shaped bent tube section 31, one end of the fifth U-shaped bent tube section 31 is connected with a third interface of the valve body 5, and a third reserved interface (namely a C port) connected with the condensing coil is arranged at the other end of the fifth U-shaped bent tube section;

the evaporating pipe 4 comprises a sixth U-shaped bent pipe section 41 and a bent pipe section which are connected, the sixth U-shaped bent pipe section 41 is connected with a fourth interface of the valve body 5, and the bent pipe section is provided with a fourth reserved interface (namely an E port) connected with an evaporator air pipe.

It should be noted that, the damping hose section 12 in this embodiment adopts a damping hose with a length of 150mm, and is vertically installed, the upper and lower interfaces are respectively with an inner diameter of 19.2mm, and the copper size head of the reducing joint 16 in this embodiment has an interface size of 19.2mm inner diameter to 35.1mm inner diameter.

In some embodiments, the first control valve 14 is a one-way shut-off valve that is disposed in the same direction as the exhaust flow direction.

It should be noted that, in the embodiment, the first control valve 14 is a one-way stop valve, and the leakage flow rate under the reverse pressure difference of 1.0MPa is required to be less than 50ml/min, and the direction of the one-way stop valve is the same as the exhaust flow direction.

In some embodiments, as shown in fig. 1, the first transition section 16 and the second transition section 18 are each right angle bend sections;

the first extending section 15 is provided with a second control valve 19, a first sensor 110 and a second sensor 111, the second control valve 19 is a needle valve, the first sensor 110 is a high-voltage switch, and the second sensor 111 is a high-voltage sensor;

the air suction pipe 2 is provided with a third sensor 23 and a temperature sensing clamp 24, the third sensor 23 is a low-pressure sensor, and the temperature sensing clamp 24 is used for placing an air suction temperature sensor.

Specifically, the second control valve 19 is a needle valve, the first sensor 110 is a high-pressure switch, the second sensor 111 is a high-pressure sensor, and the third sensor 23 is a low-pressure sensor;

in this embodiment, for the needle valve and the sensor, both are fixed with the pipeline through the rubber fixing block during installation, the needle valve is used for vacuumizing and connecting the high pressure of the pressure gauge checking system, the high pressure switch is used for protecting the operation range of the high pressure non-overpressure machine of the system, the high pressure sensor and the low pressure sensor are used for protecting the non-overpressure machine of the system, on one hand, the high pressure non-overpressure range of the dual protection system is used for controlling the rotation speed of the variable frequency compressor or the rotation speed of the fan or controlling the air suction superheat degree and the air discharge superheat degree according to the pressure detection values of the two.

The temperature sensing clamp 24 is made of brass, and is used for placing an air suction temperature sensor, and the temperature sensing clamp is matched with a low-pressure sensor to control the air suction superheat degree of the system so as to control the opening degree of the expansion valve of the system.

The bent pipe section comprises a third transition section 42, a fourth transition section 43, a second straight section 44 and a cantilever section 45 which are sequentially connected, wherein the third transition section 42 is connected with a sixth U-shaped bent pipe section 41, and the cantilever section 45 is far away from a fourth reserved interface arranged at the end of the second straight section 44 and is connected with an evaporator air pipe.

As shown in fig. 2, the sixth U-shaped bend section 41 is perpendicular to the axial center line L1 of the valve body 5, the axis of the third transition section 42 forms an included angle of 45 ° with the axial center line L2 of the second straight section 44, and the axis of the initial section of the fourth transition section 43 forms an included angle of 135 ° with the axial center line L2 of the second straight section 44;

specifically, in the present embodiment, the purpose of setting the 45 ° included angle and the 135 ° included angle is to save space, and the guide evaporation tube 4 is arranged above the evaporator and fixed with the bracket, saving the installation space of the lower portion of the bottom frame.

The axis of the fifth U-shaped bend section 31 forms an included angle of 21 degrees with the axial center line L1 of the valve body 5, the axes of the first transition section 15, the reducing joint 16 and the second transition section 17 are collinear, the axes of the fifth U-shaped bend section 31 form an included angle of 35 degrees with the axial center line L1 of the valve body 5, the axes of the fifth U-shaped bend section are parallel to the horizontal line L3 of the axial center line L1 of the valve body 5, the axes of the first U-shaped bend section 11 form an included angle of 37 degrees with the horizontal line L3, and the axes of the third U-shaped bend section 21 form an included angle of 83 degrees with the horizontal line L3.

Specifically, in the present embodiment, the purpose of setting the included angle of 37 ° is to save the layout space, so that the compressor discharge pipe 1 is installed in the compressor muffler box to reduce noise, and the angle range is set between 30 ° and 45 ° to fall within the protection range of the present embodiment, except for the present embodiment.

The purpose of setting 35 contained angles and 83 contained angles is to reduce the stress concentration of the exhaust pipe 1 and the four-way valve body 5, and the purpose of setting 21 contained angles is to save space and adjust the outlet of the four-way valve condenser pipe 3 to be matched with the air pipe of the coil pipe so as to ensure the symmetrical arrangement of the left air pipe and the right air pipe of the coil pipe.

Fig. 3 is a practical illustration diagram of the four-way valve module applied to the chassis frame of the unit according to the first embodiment, the four-way valve module is fixed on the chassis frame of the unit through a clamp, the connection interfaces of the pipelines are respectively and correspondingly connected with the exhaust pipe 1, the air suction pipe 2, the condensation pipe 3 and the evaporation pipe 4, so that the space arrangement of the whole four-way valve module is realized, and as can be seen from fig. 3, a large amount of space can be reserved on the right side of the assembled chassis frame of the unit for arranging the compressor driving box and the main control box, and the installation and the debugging of each component on the right side are facilitated.

Example two

The four-way valve module structure of the embodiment is approximately the same as that of the whole four-way valve module structure of the embodiment, and is slightly different from each pipeline, and the arrangement angles of the pipelines are different, so that a scheme for reserving an installation space on the left side of a chassis frame of the unit is provided.

Unlike the first embodiment, the following is:

as shown in fig. 4, the bent pipe section includes a fifth transition section 46, a sixth transition section 47 and a third straight extension section 48, which are sequentially connected;

the fifth transition section 46 is connected to the sixth U-bend section 41;

the third straight stretch 48 is connected to the evaporator air pipe away from a fourth reserved connection provided by the sixth transition section 47.

As shown in fig. 5, the pipe sections of the exhaust pipe 1 are collinear and form an included angle of 40 ° with the axial center line L1 of the valve body 5, and the axis of the fifth U-shaped bent pipe section 31 forms an included angle of 21 ° with the axial center line L1 of the valve body 5, unlike the first embodiment, the direction of the included angle of the first embodiment is leftward, but the present embodiment is rightward.

Specifically, in the embodiment, the purpose of setting the included angle of 40 degrees is firstly to ensure that the overlooking axis of the pipeline assembly from the exhaust port of the compressor to the interface of the four-way valve is on a straight line so as to facilitate the installation of production pipes, and secondly to reduce the stress concentration of the pipeline 1 of the exhaust pipe;

the purpose of setting the included angle of 21 degrees is to save space and adjust the air pipe of four-way valve condenser pipe 3 export and coil pipe to cooperate, in order to guarantee the left and right sides air pipe symmetrical arrangement of coil pipe.

The axes of the initial section of the sixth transition section 47, the fifth transition section 46 and the sixth U-bend section 41 are collinear and have an angle of 60 ° with the axial centerline L1 of the valve body 5, and the axis of the initial section of the sixth transition section 47 has an angle of 120 ° with the axis of the third straight section 48.

Specifically, in this embodiment, the purpose of setting the included angle of 60 ° is to ensure that the first two bending overlooking axes of the four-way valve evaporating pipe 4 are on the same straight line under the condition of meeting the requirement of technological bending, so as to facilitate production and processing.

The purpose of setting the included angle of 120 degrees is to guide the four-way valve evaporation pipe 4 to be matched with an evaporator outlet pipeline.

Fig. 6 is a practical illustration of the four-way valve module according to the second embodiment applied to the chassis frame of the unit, the four-way valve module is fixed on the chassis frame of the unit through a clamp, the connection interfaces of the pipelines are respectively and correspondingly connected with the exhaust pipe 1, the air suction pipe 2, the condensation pipe 3 and the evaporation pipe 4, so that the space arrangement of the whole four-way valve module is realized, and as can be seen from fig. 6, a large amount of space can be reserved on the left side of the chassis frame after assembly for arranging the compressor driving box and the main control box, thereby facilitating the installation and debugging of the components on the left side.

Example III

By combining the first embodiment with the second embodiment, the method can be applied to a dual-system variable-frequency air-cooled heat pump unit, and fig. 7 is a diagram of an application example in a unit chassis pipeline when the practical example of the first embodiment is combined with the application example of the second embodiment; the combined mode can place the driving box in the middle position of the chassis, and the left and right inlet wire compressors are convenient to regulate and control, so that the combined scheme is compact in layout, and is certainly an ideal design scheme for a double-system variable-frequency unit.

According to the four-way valve pipeline module and the variable frequency air-cooled heat pump unit, the pipeline space is reasonably and compactly arranged by setting the installation angles and the positions among different pipelines, so that the installation space of a unit driving box and a main control box is ensured, and the installation operation and the subsequent debugging of other parts of the unit by operators are facilitated; meanwhile, vibration stress of the exhaust pipe 1 path is effectively reduced by arranging the damping hose, no-pressure-difference starting and refrigerant backflow of the compressor are avoided by arranging the one-way valve, unit maintenance and parameter monitoring are performed by arranging different sensors and valves, and efficient and stable operation of an air conditioning system is guaranteed.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a four-way valve pipeline module, includes valve body (5), blast pipe (1), breathing pipe (2), condenser pipe (3) and evaporating pipe (4) are connected respectively to valve body (5), its characterized in that:

the exhaust pipe (1) comprises a first U-shaped bent pipe section (11), a damping hose section (12), a second U-shaped bent pipe section (13), a first control valve (14), a first extending section (15), a first transition section (16), a reducing joint (17) and a second transition section (18) which are sequentially connected, wherein the second transition section (18) is connected with a first interface of the valve body (5), and the first U-shaped bent pipe section (11) is provided with a first reserved interface connected with an exhaust port of a compressor;

the air suction pipe (2) comprises a third U-shaped bent pipe section (21) and a fourth U-shaped bent pipe section (22) which are connected, the third U-shaped bent pipe section (21) is connected with a second connector of the valve body (5), and the fourth U-shaped bent pipe section (22) is provided with a second reserved connector connected with the gas-liquid separator;

the condensing pipe (3) comprises a fifth U-shaped bent pipe section (31), one end of the fifth U-shaped bent pipe section (31) is connected with a third interface of the valve body (5), and a third reserved interface connected with the condensing coil is arranged at the other end of the fifth U-shaped bent pipe section;

the evaporation pipe (4) comprises a sixth U-shaped bent pipe section (41) and a bent pipe section which are connected, the sixth U-shaped bent pipe section (41) is connected with a fourth interface of the valve body (5), and the bent pipe section is provided with a fourth reserved interface connected with an evaporator air pipe.

2. The four-way valve manifold assembly of claim 1, wherein:

the first control valve (14) is a one-way stop valve, and the setting direction of the first control valve is the same as the exhaust flow direction.

3. The four-way valve manifold assembly of claim 1, wherein:

the first transition section (16) and the second transition section (18) are right angle bend sections;

the first extending section (15) is provided with a second control valve (19), a first sensor (110) and a second sensor (111), the second control valve (19) is a needle valve, the first sensor (110) is a high-voltage switch, and the second sensor (111) is a high-voltage sensor.

4. The four-way valve manifold assembly of claim 1, wherein:

the air suction pipe (2) is provided with a third sensor (23) and a temperature sensing clamp (24), the third sensor (23) is a low-pressure sensor, and the temperature sensing clamp (24) is used for placing an air suction temperature sensor.

5. The four-way valve manifold assembly of claim 1, wherein:

the bent pipe section comprises a third transition section (42), a fourth transition section (43), a second straight section (44) and a cantilever section (45) which are sequentially connected;

the third transition section (42) is connected with the sixth U-shaped bent pipe section (41);

the cantilever section (45) is far away from a fourth reserved interface arranged at the end of the second straight extension section (44) and is connected with an evaporator air pipe.

6. The four-way valve manifold assembly of claim 5, wherein:

the sixth U-shaped bent pipe section (41) is perpendicular to the axial center line L1 of the valve body (5);

the axis of the third transition section (42) forms an included angle of 45 degrees with the axial center line L2 of the second straight extension section (44);

the axis of the initial section of the fourth transition section (43) forms an included angle of 135 degrees with the axial center line L2 of the second straight section (44).

7. The four-way valve manifold assembly of claim 1, wherein:

the axial line of the fifth U-shaped bent pipe section (31) and the axial central line L1 of the valve body (5) form an included angle of 21 degrees;

the axes of the first transition section (16), the reducing joint (17) and the second transition section (18) are collinear, and the axes of the axes and the axial center line L1 of the valve body (5) form an included angle of 35 degrees;

a horizontal line L3 parallel to the axial centerline L1 of the valve body (5);

the axis of the first U-shaped bent pipe section (11) forms an included angle of 37 degrees with the horizontal line L3;

the axis of the third U-shaped bent pipe section (21) and the horizontal line L3 form an included angle of 83 degrees.

8. The four-way valve manifold assembly of claim 1, wherein:

the bent pipe section comprises a fifth transition section (46), a sixth transition section (47) and a third straight section (48) which are sequentially connected;

the fifth transition section (46) is connected to the sixth U-shaped bend section (41);

the third straight extension section (48) is far away from a fourth reserved interface arranged on the sixth transition section (47) and is connected with an evaporator air pipe.

9. The four-way valve manifold assembly of claim 8, wherein:

all pipe sections of the exhaust pipe (1) are collinear and form an included angle of 40 degrees with the axial center line L1 of the valve body (5);

the axial line of the fifth U-shaped bent pipe section (31) and the axial central line L1 of the valve body (5) form an included angle of 21 degrees;

the axes of the initial section of the sixth transition section (47), the fifth transition section (46) and the sixth U-shaped bent pipe section (41) are collinear, and the axes of the axes form an included angle of 60 degrees with the axial center line L1 of the valve body (5);

the axis of the initial section of the sixth transition section (47) forms an included angle of 120 degrees with the axis of the third straight section (48).

10. The utility model provides a frequency conversion air-cooled heat pump unit, includes four-way valve pipeline module, its characterized in that:

the four-way valve pipeline module is a four-way valve pipeline module as claimed in any one of claims 1 to 9.