Three-cylinder pump body assembly, three-cylinder compressor, refrigerator

Abstract

The application provides a three-cylinder pump body assembly, a three-cylinder compressor and a refrigerator, wherein the three-cylinder pump body assembly has a rotor compression part, a first piston compression part and a second piston compression part; the first piston compression part and the second piston compression part can suck refrigerant in a circulating pipeline outside into the first piston compression part and the second piston compression part and perform primary compression; the refrigerant compressed by the first piston compression part and the second piston compression part is discharged into the rotor compression part to perform secondary compression, and is discharged into the circulating pipeline after the secondary compression. The application can effectively improve the back pressure of the compressor, reduce the compression ratio of each compression part, improve the compression efficiency and refrigerating capacity of the compressor, meet the deep freezing working condition requirement of the refrigerator, and has a strong application prospect on large refrigerating capacity refrigeration equipment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of compressor design, and particularly relates to a three-cylinder pump body assembly, a three-cylinder compressor and a refrigerator. BACKGROUND

[0002] With the development of economic conditions, many families have higher requirements for the storage of physical objects, which makes the demand for large cooling capacity and deep freezing of refrigerators increasingly prominent. Larger cooling capacity and lower temperature play a more critical role in long-term preservation of physical objects.

[0003] However, the cooling capacity of the current small single-cylinder reciprocating refrigeration compressor is difficult to reach a higher level, and the single-cylinder compressor compresses the return gas of the evaporator so that the high-pressure gas obtained after compression of the compressor enters the condenser. In the single-cylinder compressor assembly in the prior art, due to the low pressure of the evaporator return gas, the compression ratio of the compressor increases, the volumetric efficiency is low, and the energy efficiency ratio is also low. SUMMARY

[0004] Therefore, the present application provides a three-cylinder pump body assembly, a three-cylinder compressor and a refrigerator, which can solve the technical problems of low compression ratio, low volumetric efficiency and low energy efficiency ratio of the single-cylinder compressor in the prior art.

[0005] To solve the above problems, the present application provides a three-cylinder pump body assembly, which has:

[0006] The rotor compression part, the first piston compression part and the second piston compression part can suck the refrigerant in the external circulation pipeline into the first piston compression part and the second piston compression part and perform primary compression. The refrigerant compressed by the first piston compression part and the second piston compression part is discharged into the rotor compression part for secondary compression, and is discharged into the circulation pipeline after secondary compression.

[0007] In some embodiments,

[0008] The straight-line reciprocating motion of the sliding vane of the rotor compression part can drive the straight-line reciprocating motion of the first piston of the first piston compression part and the second piston of the second piston compression part.

[0009] In some embodiments,

[0010] The rotor compression part comprises a rotor, a first end of the sliding vane is hinged to the rotor, a second end of the sliding vane is formed with a first inclined surface corresponding to the first piston and a second inclined surface corresponding to the second piston, a first end of the first piston is connected to a first end of the first connecting rod, a first end of the second piston is connected to a first end of the second connecting rod, a second end of the first connecting rod is slidingly connected to the first inclined surface, and a second end of the second connecting rod is slidingly connected to the second inclined surface.

[0011] In some embodiments,

[0012] The first inclined surface has a first sliding groove, the second inclined surface has a second sliding groove, the first sliding groove and the second sliding groove extend from the first end to the second end of the sliding vane, the second end of the first connecting rod slidingly locates in the first sliding groove, and the second end of the second connecting rod slidingly locates in the second sliding groove.

[0013] In some embodiments,

[0014] The second ends of the first connecting rod and the second connecting rod are formed with anti-disengagement structures, and the anti-disengagement structures are located in the first sliding groove or the second sliding groove.

[0015] In some embodiments,

[0016] Further comprising a cylinder block, the cylinder block comprises a cylinder block body, the cylinder block body is formed with a first cylinder hole corresponding to the rotor compression part, a second cylinder hole corresponding to the first piston compression part, and a third cylinder hole corresponding to the second piston compression part, the first cylinder hole penetrates through a first side surface and a second side surface of the cylinder block body along an axial direction of the first cylinder hole, a sliding vane groove is formed on a hole wall of the first cylinder hole, the sliding vane slidingly locates in the sliding vane groove, and the second cylinder hole and the third cylinder hole are respectively formed on opposite two groove walls of the sliding vane groove.

[0017] In some embodiments,

[0018] A first sound attenuation cavity and a second sound attenuation cavity are formed on the first side surface of the cylinder block body, the first sound attenuation cavity is in communication with the second cylinder hole for exhaust gas, the second sound attenuation cavity is in communication with the third cylinder hole for exhaust gas, the first sound attenuation cavity and the second sound attenuation cavity are capable of being in communication, and one of the first sound attenuation cavity or the second sound attenuation cavity is in communication with an air intake port of the first cylinder hole.

[0019] In some embodiments,

[0020] The second cylinder hole and the third cylinder hole are coaxially arranged, a central axis of the second cylinder hole is parallel to the first side surface and perpendicular to a central axis of the first cylinder hole, and / or the first inclined surface and the second inclined surface are mirror arranged.

[0021] In some embodiments,

[0022] The second cylinder hole and the third cylinder hole are through holes penetrating the outer wall of the cylinder block body, a plurality of first connecting holes are arranged on the outer wall of the cylinder block body having the second cylinder hole and the third cylinder hole, and the first connecting holes are used for connecting the cylinder head assembly and are arranged at intervals around the second cylinder hole and the third cylinder hole; and / or,

[0023] Second connecting holes for connecting end flanges are further arranged on the first side surface and the second side surface.

[0024] In some embodiments,

[0025] First exhaust communication holes for connecting the exhaust cavity of the cylinder head assembly with the first silencing cavity and second exhaust communication holes for connecting the exhaust cavity of the cylinder head assembly with the second silencing cavity are further arranged on the cylinder block body.

[0026] In some embodiments,

[0027] The cylinder block further comprises an exhaust communication pipe, one end of the exhaust communication pipe is in communication with the gas outlet of the first silencing cavity, and the other end of the exhaust communication pipe is in communication with the gas outlet of the second silencing cavity.

[0028] The application further provides a three-cylinder compressor comprising the three-cylinder pump body assembly.

[0029] The application further provides a refrigerator comprising the three-cylinder compressor.

[0030] The three-cylinder pump body assembly, the three-cylinder compressor and the refrigerator provided by the application have the following beneficial effects:

[0031] The three-cylinder pump body assembly comprises two piston compression parts and one rotor compression part, the two piston compression parts can perform primary compression on the refrigerant in the external circulation pipeline, and the rotor compression part can perform secondary compression on the refrigerant compressed by the two piston compression parts, thereby effectively improving the back pressure of the compressor, reducing the compression ratio of each compression part, improving the compression efficiency and refrigerating capacity of the compressor, meeting the deep freezing working condition requirement of the refrigerator, and having a strong application prospect in large refrigeration equipment; compared with the three-cylinder rotor compressor commonly used in the industry, the compressor of the application adopts a piston-rotor composite compression structure, and the overall structure is more compact, and is particularly suitable for limited installation space such as a refrigerator. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0033] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the conditions that the present application can be implemented, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects that the present application can produce and the purposes that the present application can achieve, should still fall within the scope of the technical content disclosed by the present application.

[0034] Figure 1 It is a schematic diagram of the three-cylinder pump body assembly of the embodiment of the present application, and the end flange corresponding to the rotor compression part, the cylinder head assembly corresponding to the piston compression part, and the exhaust communication pipe and other components are not shown in the figure;

[0035] Figure 2 It is a schematic diagram of the cross section of Figure 1 , and the relative relationship between the rotor and the vane is shown in the figure;

[0036] Figure 3 It is a partial cross-sectional view of Figure 1 , and the relative relationship between the vane and the two pistons is shown in the figure;

[0037] Figure 4 It is a schematic diagram of the three-dimensional structure of the two pistons, rotor and vane in Figure 1 after assembly;

[0038] Figure 5 It is a partial enlarged view of A in Figure 4 ;

[0039] Figure 6 It is a schematic diagram of the three-dimensional structure of the vane in Figure 1 ;

[0040] Figure 7 It is a schematic diagram of the three-dimensional structure of the cylinder seat in Figure 1 , and the exhaust communication pipe is in a disassembled state;

[0041] Figure 8 It is a schematic diagram of the three-dimensional structure of Figure 7 from the bottom view;

[0042] Figure 9 It is a cross-sectional schematic diagram of Figure 8 .

[0043] Reference signs are indicated as:

[0044] 11, sliding vane; 111, first inclined surface; 112, second inclined surface; 113, first sliding groove; 114, second sliding groove; 115, hinge; 12, rotor; 21, first piston; 22, first connecting rod; 23, anti-falling structure; 31, second piston; 32, second connecting rod; 4, cylinder block body; 401, first cylinder bore; 4011, air inlet; 4012, exhaust gap; 402, second cylinder bore; 403, third cylinder bore; 42, sliding vane groove; 431, first sound damping cavity; 432, second sound damping cavity; 441, second connecting hole; 442, first connecting hole; 451, first exhaust communication hole; 452, second exhaust communication hole; 5, exhaust communication pipe; 6, crankshaft assembly. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0046] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0047] It should be understood that the term "and / or" used herein is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0048] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and operation described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the claims. The application is also not limited to the details of the foregoing embodiment.

[0049] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "horizontal", "top", "bottom", and the like are generally based on the orientation or positional relationships shown in the drawings, and are merely intended to facilitate the description and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0050] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0051] In addition, it should be noted that the use of the terms "first", "second", and the like do not have a special meaning, and are merely used to distinguish corresponding parts, and therefore cannot be construed as limiting the scope of protection of the present application.

[0052] Reference will now be made in detail to the embodiments of the present application, one or more examples of which are shown in the drawings and described below. Each example is provided by way of explanation of the present application, and is not meant as a limitation of the present application. Further, the drawings are not drawn to scale, emphasis instead being placed upon illustrating the principles of the present application. Figures 1 to 9As shown, according to the embodiment of the present application, a three-cylinder pump body assembly is provided, which has a rotor compression part (not labeled in the figure), a first piston compression part (not labeled in the figure) and a second piston compression part (not labeled in the figure), the first piston compression part and the second piston compression part are capable of sucking the refrigerant in the external circulation pipeline (not shown in the figure) into the first piston compression part and the second piston compression part and performing primary compression, the refrigerant compressed by the first piston compression part and the second piston compression part is discharged into the rotor compression part to perform secondary compression, and is discharged into the circulation pipeline after the secondary compression. When the three-cylinder pump body assembly is applied to a refrigerator, the circulation pipeline is preferably a freezing circulation pipeline with lower back pressure.

[0053] In the technical solution, the three-cylinder pump body assembly includes two piston compression parts and a rotor compression part, the two piston compression parts are capable of performing primary compression on the refrigerant in the external circulation pipeline, and the rotor compression part is capable of performing secondary compression on the refrigerant compressed by the two piston compression parts, which can effectively improve the back pressure of the compressor, reduce the compression ratio of each compression part, improve the compression efficiency and refrigerating capacity of the compressor, meet the deep freezing working condition requirement of the refrigerator, and has strong application prospect in large refrigeration equipment. Compared with the three-cylinder rotor compressor commonly used in the industry, the compressor of the present application has a more compact overall structure due to the adoption of the piston and rotor combined compression structure, and is particularly suitable for limited installation space such as refrigerators.

[0054] It should be noted that the first piston compression part and the second piston compression part in the present application can suck the refrigerant in the external circulation pipeline and compress it in parallel with each other, and the refrigerant compressed by the first piston compression part and the second piston compression part is discharged into the rotor compression part for secondary compression, which can significantly improve the suction capacity of the compressor and thus improve the overall performance and refrigerating capacity of the compressor.

[0055] In a preferred embodiment, the linear reciprocating motion of the vane 11 of the rotor compression part can drive the linear reciprocating motion of the first piston 21 of the first piston compression part and the second piston 31 of the second piston compression part. It can be understood that the rotor compression part further includes a rotor 12, which is sleeved on the eccentric part of the crankshaft assembly 6. The crankshaft assembly 6 is driven to rotate by the motor assembly (not shown in the figure), thereby driving the translation (i.e. oscillation) of the rotor 12. The translating rotor 12 can act on the vane 11 to drive the linear reciprocating motion of the vane 11, and the vane 11 further acts on the first piston 21 and the second piston 22, thereby realizing the rotation of the rotor compression part and the rotation of the two piston compression parts driven by one set of motor assembly, which is simple and compact in structure.

[0056] As mentioned above, the rotor compression part comprises a rotor 12, the first end of the sliding sheet 11 is hinged to the rotor 12 (specifically through the hinge 115 arranged at the first end of the sliding sheet 11), the second end of the sliding sheet 11 is formed with a first inclined surface 111 arranged corresponding to the first piston 21 and a second inclined surface 112 arranged corresponding to the second piston 31, the first end of the first piston 21 is connected to the first end of the first connecting rod 22, the first end of the second piston 31 is connected to the first end of the second connecting rod 32, the second end of the first connecting rod 22 is slidingly connected to the first inclined surface 111, and the second end of the second connecting rod 32 is slidingly connected to the second inclined surface 112.

[0057] In the technical scheme, the first inclined surface 111 and the second inclined surface 112 are arranged at the second end of the sliding sheet 11, the height difference of the inclined surfaces is converted into the force applied to the pistons, the structure design is novel and the structure design of the compressor can be further simplified. The inclination degree of the first inclined surface 111 and the second inclined surface 112 can be reasonably selected according to the compression ratio and the compression stroke of the corresponding piston compression part.

[0058] In order to ensure the stability of the reciprocating motion of the first connecting rod 22 and the second connecting rod 32, in a preferred embodiment, the first inclined surface 111 is provided with a first sliding groove 113, the second inclined surface 112 is provided with a second sliding groove 114, the first sliding groove 113 and the second sliding groove 114 extend from the first end to the second end of the sliding sheet 11, the second end of the first connecting rod 22 is slidingly arranged in the first sliding groove 113, and the second end of the second connecting rod 32 is slidingly arranged in the second sliding groove 114, that is, the second end of the first connecting rod 22 is reliably limited by the first sliding groove 113, and the second end of the second connecting rod 32 is reliably limited by the second sliding groove 114, so as to ensure the stability and reliability of the reciprocating compression process of the pistons.

[0059] In one embodiment, the first and second inclined surfaces 111 and 112 described above can only be used to apply force to the compression stroke of the corresponding piston, and the suction stroke of the piston can be achieved by providing other structures, such as a reset spring in the cylinder, etc. In a more preferred embodiment, the second end of the first connecting rod 22 and the second connecting rod 32 is formed with an anti-disengagement structure 23, which is located in the first sliding groove 113 or the second sliding groove 114. It can be understood that the notches of the first and second sliding grooves 113 and 114 are respectively provided with a closed end to prevent the anti-disengagement structure 23 from disengaging from the groove. The anti-disengagement structure 23 can be, for example, a spherical end. In this technical solution, the second end of the first connecting rod 22 and the second connecting rod 32 is respectively slidably connected to the corresponding sliding groove through the anti-disengagement structure 23, so that the linear reciprocating motion of the sliding vane 11 can both compress and exhaust the refrigerant in the piston compression part and also suck the refrigerant in the piston compression part.

[0060] For a more detailed description, see Figures 7 to 9 In some embodiments, as shown in the drawings, the three-cylinder compressor further comprises a cylinder block, which comprises a cylinder block body 4, the cylinder block body 4 is formed with a first cylinder hole 401 corresponding to the rotor compression part, a second cylinder hole 402 corresponding to the first piston compression part, and a third cylinder hole 403 corresponding to the second piston compression part. The first cylinder hole 401 penetrates the first side and the second side of the cylinder block body 4 along its axial direction. A sliding vane groove 42 is formed on the hole wall of the first cylinder hole 401, and the sliding vane 11 slides in the sliding vane groove 42. The second cylinder hole 402 and the third cylinder hole 403 are respectively formed on the opposite two side walls of the sliding vane groove 42. It can be understood that the first side and the second side of the first cylinder hole 401 are connected with end flanges (not shown in the drawings) corresponding to the part of the area, and the second cylinder hole 402 and the third cylinder hole 403 are provided with corresponding cylinder head assemblies (not shown in the drawings). The cylinder head assembly can be a cylinder head assembly known in the industry, that is, it has a suction valve and an exhaust valve and other related structures. Specifically, the sliding vane groove 42 penetrates the first side and the second side, thereby facilitating the assembly of the sliding vane 11 and the corresponding components. It should be noted that the sliding vane groove 42 includes a sealing sliding section corresponding to the first cylinder hole 401 and a driving sliding section corresponding to the second cylinder hole 402 and the third cylinder hole 403.

[0061] In this technical solution, by constructing the first cylinder hole 401, the second cylinder hole 402, and the third cylinder hole 403 on the cylinder block body 4, the three compression parts in the three-cylinder pump body assembly can be concentrated on one component, simplifying the structure of the pump body assembly and making the structure of the pump body assembly more compact, reducing the volume of the components, and thereby reducing the excessive occupation of the compressor installation space.

[0062] Specifically referring to Figure 7 As shown in the drawings, in a preferred embodiment, a first muffling cavity 431 and a second muffling cavity 432 are configured on the first side of the cylinder block body 4, the first muffling cavity 431 is in communication with the exhaust of the second cylinder bore 402, the second muffling cavity 432 is in communication with the exhaust of the third cylinder bore 403, the first muffling cavity 431 and the second muffling cavity 432 are capable of being in communication, and one of the first muffling cavity 431 or the second muffling cavity 432 is in communication with the air inlet 4011 of the first cylinder bore 401.

[0063] In this technical solution, the exhaust of the second cylinder bore 402 and the third cylinder bore 403 is respectively provided with a corresponding first muffling cavity 431 and a second muffling cavity 432 on the cylinder block body 4, which can effectively reduce the exhaust noise of the compressor, and the exhaust refrigerant can also form a buffer rectifier in the muffling cavity, which is also conducive to reducing the suction noise of the rotor compression part.

[0064] In a preferred embodiment, the cylinder block further comprises an exhaust communication pipe 5, one end of the exhaust communication pipe 5 is in communication with the gas outlet of the first muffling cavity 431, and the other end is in communication with the gas outlet of the second muffling cavity 432, that is, in this technical solution, the exhaust communication pipe 5 is arranged on the outside of the cylinder block body 4, which can effectively reduce the difficulty of realizing the communication and integration of the first muffling cavity 431 and the second muffling cavity 432, and avoid the structural limitation caused by the setting of the slide groove 42. Specifically, the exhaust communication pipe 5 is a U-shaped pipe, which can communicate the two muffling cavities with a shorter length, effectively reducing the flow resistance loss caused by the lengthening of the flow path in the cylinder block body 4. Specifically, the two ends of the exhaust communication pipe 5 are respectively provided with a cover body (not marked in the figure) corresponding to the first muffling cavity 431 and the second muffling cavity 432, the cover body can be welded to the two ends of the pipe body of the exhaust communication pipe 5, and the exhaust communication pipe 5 is screwed to the corresponding muffling cavity through the two cover bodies.

[0065] The second cylinder bore 402 and the third cylinder bore 403 are coaxially arranged, the center axis of the second cylinder bore 402 is parallel to the first side and perpendicular to the center axis of the first cylinder bore 401 (that is, at this time, the first cylinder bore 401, the second cylinder bore 402 and the third cylinder bore 403 are all cylindrical bores), which can effectively reduce the height of the two piston compression parts and the rotor compression part, and further make the overall structure of the compressor more compact, especially suitable for the working condition with limited installation height space.

[0066] In a preferred embodiment, the first inclined surface 111 is mirror-symmetrically arranged with the second inclined surface 112, specifically, the first inclined surface 111 is symmetric about the center symmetry plane of the sliding vane groove 42, and thus the first piston compression part and the second piston compression part are also symmetric about the center symmetry plane, which can reduce the vibration of the pump body assembly caused by unbalanced force.

[0067] In some embodiments, the second cylinder bore 402 and the third cylinder bore 403 are both through holes penetrating the outer side wall of the cylinder block body 4, the outer side wall of the cylinder block body 4 having the second cylinder bore 402 and the third cylinder bore 403 has a plurality of first connecting holes 442 for connecting the aforementioned cylinder head assembly and being arranged around the second cylinder bore 402 and the third cylinder bore 403; and / or, the first side and the second side are also configured with second connecting holes 441 for connecting the aforementioned end flanges. The aforementioned first connecting holes 442 and second connecting holes 441 can be through holes or threaded holes.

[0068] In a preferred embodiment, the cylinder block body 4 is also configured with a first exhaust communication hole 451 for connecting the exhaust cavity of the cylinder head assembly with the first muffling cavity 431, and a second exhaust communication hole 452 for connecting the exhaust cavity of the cylinder head assembly with the second muffling cavity 432, specifically, the aforementioned first exhaust communication hole 451 and the second exhaust communication hole 452 are both linearly extending through holes, and the specific arrangement position thereof corresponds to the exhaust cavity (the cavity where the exhaust valve vane is located) in the aforementioned corresponding cylinder head assembly.

[0069] According to the embodiments of the present application, a three-cylinder compressor is also provided, which comprises the three-cylinder pump body assembly described above, and further comprises a shell (not shown in the figure), the shell having a suction pipe and an exhaust pipe, the suction pipe being in communication with the inner cavity of the shell, and the exhaust pipe being in communication with the exhaust port of the rotor compression part. The suction pipe is only arranged on the shell to be in communication with the inner cavity of the shell, so that the refrigerant entering the inner cavity of the shell can be sucked into the first piston compression part and the second piston compression part, and the exhaust pipe extends into the inner side of the shell and is connected with the exhaust port (corresponding to the exhaust notch 4012) of the rotor compression part, so as to ensure that the high-pressure refrigerant discharged by the rotor compression part can enter the external circulation pipeline through the exhaust pipe.

[0070] According to the embodiments of the present application, a refrigerator is also provided, which comprises the three-cylinder compressor described above.

[0071] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A three-cylinder pump body assembly, characterized in that, have: The compressor includes a rotor, a first piston, and a second piston. The first and second pistons can draw refrigerant from the external circulation pipeline into the first and second pistons and perform primary compression. The refrigerant that has undergone primary compression by the first and second pistons is discharged into the rotor for secondary compression and then discharged into the circulation pipeline after secondary compression. The linear reciprocating motion of the slide (11) of the rotor compression section can drive the linear reciprocating motion of the first piston (21) of the first piston compression section and the second piston (31) of the second piston compression section; the rotor compression section includes a rotor (12), the first end of the slide (11) is hinged to the rotor (12), the second end of the slide (11) forms a first inclined surface (111) corresponding to the first piston (21) and a second inclined surface (112) corresponding to the second piston (31), the first end of the first piston (21) is connected to the first end of the first connecting rod (22), the first end of the second piston (31) is connected to the first end of the second connecting rod (32), the second end of the first connecting rod (22) is slidably connected to the first inclined surface (111), and the second end of the second connecting rod (32) is slidably connected to the second inclined surface (112).

2. The three-cylinder pump body assembly according to claim 1, characterized in that, The first inclined surface (111) has a first groove (113), and the second inclined surface (112) has a second groove (114). The first groove (113) and the second groove (114) extend from the first end of the slide plate (11) to its second end. The second end of the first connecting rod (22) slides in the first groove (113), and the second end of the second connecting rod (32) slides in the second groove (114).

3. The three-cylinder pump body assembly according to claim 2, characterized in that, The second ends of the first connecting rod (22) and the second connecting rod (32) are provided with anti-detachment structures (23), which are located in the first groove (113) or the second groove (114).

4. The three-cylinder pump body assembly according to any one of claims 1 to 3, characterized in that, It also includes a cylinder seat, which includes a cylinder seat body (4). The cylinder seat body (4) has a first cylinder hole (401) corresponding to the rotor compression part, a second cylinder hole (402) corresponding to the first piston compression part, and a third cylinder hole (403) corresponding to the second piston compression part. The first cylinder hole (401) passes through the first side and the second side of the cylinder seat body (4) along its axial direction. A sliding vane groove (42) is constructed on the hole wall of the first cylinder hole (401). The sliding vane (11) slides in the sliding vane groove (42). The second cylinder hole (402) and the third cylinder hole (403) are respectively constructed on the opposite side groove walls of the sliding vane groove (42).

5. The three-cylinder pump body assembly according to claim 4, characterized in that, The cylinder block body (4) has a first muffler chamber (431) and a second muffler chamber (432) on its first side. The first muffler chamber (431) is connected to the exhaust of the second cylinder bore (402), and the second muffler chamber (432) is connected to the exhaust of the third cylinder bore (403). The first muffler chamber (431) and the second muffler chamber (432) can be connected, and one of the first muffler chamber (431) or the second muffler chamber (432) is connected to the intake port (4011) of the first cylinder bore (401).

6. The three-cylinder pump body assembly according to claim 5, characterized in that, The second cylinder bore (402) is coaxially arranged with the third cylinder bore (403), the central axis of the second cylinder bore (402) is parallel to the first side and perpendicular to the central axis of the first cylinder bore (401); and / or, the first inclined surface (111) is mirrored with the second inclined surface (112).

7. The three-cylinder pump body assembly according to claim 6, characterized in that, The second cylinder bore (402) and the third cylinder bore (403) are both through holes that penetrate the outer side wall of the cylinder seat body (4). The outer side wall of the cylinder seat body (4) having the second cylinder bore (402) and the third cylinder bore (403) has a plurality of first connecting holes (442). The first connecting holes (442) are used to connect the cylinder head assembly and are spaced around the second cylinder bore (402) and the third cylinder bore (403).

8. The three-cylinder pump body assembly according to claim 7, characterized in that, The cylinder block body (4) is also provided with a first exhaust communication hole (451) for connecting the exhaust chamber of the cylinder head assembly with the first muffler chamber (431) and a second exhaust communication hole (452) for connecting the exhaust chamber of the cylinder head assembly with the second muffler chamber (432).

9. The three-cylinder pump body assembly according to claim 7, characterized in that, The first side and the second side are also provided with a second connection hole (441) for connecting the end flange.

10. The three-cylinder pump body assembly according to claim 5, characterized in that, The cylinder seat also includes an exhaust connecting pipe (5), one end of which is connected to the outlet of the first muffler chamber (431), and the other end is connected to the outlet of the second muffler chamber (432).

11. A three-cylinder compressor, characterized in that, Includes the three-cylinder pump body assembly according to any one of claims 1 to 10.

12. A refrigerator, characterized in that, Includes the three-cylinder compressor as described in claim 11.

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