Cylinder block, three cylinder pump body assembly, three cylinder compressor, refrigerator

Abstract

The application provides a cylinder seat, a three-cylinder pump body assembly, a three-cylinder compressor and a refrigerator, wherein the cylinder seat comprises a cylinder seat body, a first cylinder hole corresponding to a rotor compression part, a second cylinder hole corresponding to a first piston compression part and a third cylinder hole corresponding to a second piston compression part are formed on the cylinder seat body, the first cylinder hole penetrates through a first side surface and a second side surface of the cylinder seat 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, a sliding vane of the rotor compression part slides 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. The three compression parts in the three-cylinder pump body assembly can be concentrated on one part, the structure of the pump body assembly is simplified, the structure of the pump body assembly is more compact, the volume of the part is reduced, and the excessive occupation of the compressor installation space is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of compressor design, and particularly relates to a cylinder seat, 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, it is difficult for a small single-cylinder reciprocating refrigeration compressor to achieve a higher level of cooling capacity, 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, the pressure of the return gas of the evaporator is low, which increases the pressure ratio of the compressor and reduces the volumetric efficiency and the energy efficiency ratio. In order to overcome the aforementioned deficiencies in the prior art, the applicant proposes a three-cylinder compressor with one rotor compression part and two piston compression parts in related technology. The three-cylinder compressor needs to be optimized in structure for application in a refrigerator, so that the overall structure of the three-cylinder compressor is more compact, thereby reducing the excessive occupation of the compressor installation space. Based on this, the present application is proposed. SUMMARY

[0004] Therefore, the present application provides a cylinder seat, a three-cylinder pump body assembly, a three-cylinder compressor and a refrigerator, which can make the structure of the pump body assembly and the three-cylinder compressor using the same more compact, reduce the volume of components, and thereby reduce the excessive occupation of the compressor installation space.

[0005] In order to solve the above problems, the present application provides a cylinder seat applied to a three-cylinder pump body assembly, the three-cylinder pump body assembly having a rotor compression part, a first piston compression part and a second piston compression part, the cylinder seat comprising a cylinder seat body, the cylinder seat body being provided 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 penetrating through a first side surface and a second side surface of the cylinder seat body along an axial direction of the first cylinder hole, a slide groove being formed on a hole wall of the first cylinder hole, a slide of the rotor compression part sliding in the slide groove, and the second cylinder hole and the third cylinder hole being respectively formed on opposite groove walls of the slide groove.

[0006] In some embodiments,

[0007] A first silencing cavity and a second silencing cavity are formed on the first side surface of the cylinder block body, the first silencing cavity is in communication with the exhaust of the second cylinder bore, the second silencing cavity is in communication with the exhaust of the third cylinder bore, the first silencing cavity and the second silencing cavity are in communication, and one of the first silencing cavity or the second silencing cavity is in communication with the intake port of the first cylinder bore.

[0008] In some embodiments,

[0009] The second cylinder bore and the third cylinder bore are coaxially arranged, the central axis of the second cylinder bore is parallel to the first side surface and perpendicular to the central axis of the first cylinder bore.

[0010] In some embodiments,

[0011] The second cylinder bore and the third cylinder bore are both through holes penetrating the outer side wall of the cylinder block body, a plurality of first connecting holes are arranged on the outer side wall of the cylinder block body having the second cylinder bore and the third cylinder bore, the first connecting holes are used for connecting the cylinder head assembly and are arranged at intervals around the second cylinder bore and the third cylinder bore; and / or,

[0012] Second connecting holes for connecting end flanges are further formed on the first side surface and the second side surface.

[0013] In some embodiments,

[0014] First exhaust communication holes for communicating the exhaust cavity of the cylinder head assembly with the first silencing cavity and second exhaust communication holes for communicating the exhaust cavity of the cylinder head assembly with the second silencing cavity are further formed on the cylinder block body.

[0015] In some embodiments,

[0016] 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.

[0017] The application also provides a three-cylinder pump body assembly comprising the above-mentioned cylinder block, the first piston compression part and the second piston compression part can suck the refrigerant of 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 through the intake port to perform secondary compression, and is discharged into the circulation pipeline after secondary compression.

[0018] In some embodiments,

[0019] The linear reciprocating motion of the sliding plate can drive the first piston of the first piston compression part and the linear reciprocating motion of the second piston of the second piston compression part.

[0020] The application further provides a three-cylinder compressor comprising the three-cylinder pump body assembly.

[0021] The application further provides a refrigerator comprising the three-cylinder compressor.

[0022] The application provides a cylinder seat, a three-cylinder pump body assembly, a three-cylinder compressor and a refrigerator, which have the following beneficial effects:

[0023] The three-cylinder pump body assembly comprises two piston compression parts and a rotor compression part, wherein 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 refrigerating capacity refrigeration equipment; compared with the three-cylinder rotor compressor commonly used in the industry, the compressor of the application adopts a piston-rotor combined compression structure, and the overall structure is more compact, which is particularly suitable for limited installation space such as a refrigerator.

[0024] By constructing the first cylinder hole, the second cylinder hole and the third cylinder hole on the cylinder seat body, the three compression parts in the three-cylinder pump body assembly can be concentrated on one component, the structure of the pump body assembly is simplified, the structure of the pump body assembly is more compact, the component volume is reduced, and the excessive occupation of the compressor installation space is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0026] 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 do not define the limiting conditions for the implementation of the application, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the application, should still fall within the scope of the technical content disclosed by the application.

[0027] Figure 1It is a perspective structural schematic view of the three-cylinder pump body assembly of the embodiment in the present application, and the end flange arranged corresponding to the rotor compression part, the cylinder head assembly arranged corresponding to the piston compression part, the exhaust communication pipe and other components are not shown in the figure;

[0028] Figure 2 It is a perspective structural schematic view of the three-cylinder pump body assembly of the embodiment in the present application, and the end flange arranged corresponding to the rotor compression part, the cylinder head assembly arranged corresponding to the piston compression part, the exhaust communication pipe and other components are not shown in the figure; Figure 1 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure;

[0029] Figure 3 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure; Figure 1 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure;

[0030] Figure 4 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure; Figure 1 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure;

[0031] Figure 5 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure; Figure 4 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure;

[0032] Figure 6 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure; Figure 1 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure;

[0033] Figure 7 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure; Figure 1 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure;

[0034] Figure 8 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure; Figure 7 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure;

[0035] Figure 9 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure; Figure 8 It is a cross-sectional schematic view of the embodiment in the present application, and the relative relationship between the rotor and the vane is shown in the figure.

[0036] The reference signs are as follows:

[0037] 11, 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-disengagement 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, vane groove; 431, first sound attenuation cavity; 432, second sound attenuation 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

[0038] Clearly, only the embodiments described are merely a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one example embodiment is merely illustrative in nature and is in no way limiting to the application and its applications or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.

[0039] It should be noted that the terms used herein are merely for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the terms "comprise" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be understood that the term "and / or" used herein merely describes an association relationship of associated objects, and means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0041] Unless specifically stated otherwise, the relative arrangements of the components and steps illustrated in these embodiments and the numerical expressions and values set forth herein are not limiting to the scope of the present application. It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the description of the application. In all examples shown and discussed herein, any specific value should be interpreted as merely illustrative, and not as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0042] In the description of the application, it needs to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0043] 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 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" 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.

[0044] In addition, it should be noted that the use of the words "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore cannot be understood as a limitation on the scope of protection of the application.

[0045] For reference Figures 1 to 9 As shown, according to the embodiment of the 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 can suck the refrigerant of an external circulation pipeline (not shown in the figure) 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. When the three-cylinder pump body assembly is applied to a refrigerator, the aforementioned circulation pipeline is preferably a freezing circulation pipeline with lower gas return pressure.

[0046] In the technical scheme, the three-cylinder pump body assembly comprises two piston compression parts and a rotor compression part, the two piston compression parts can perform primary compression on refrigerant in an external circulation pipeline, and the rotor compression part can perform secondary compression on the refrigerant compressed by the two piston compression parts, so that the suction pressure of the compressor can be effectively improved, the compression ratio of each compression part can be reduced, the compression efficiency and refrigerating capacity of the compressor can be improved, the demand of deep freezing of a refrigerator can be met, and the compressor has a strong application prospect in large refrigeration equipment; compared with a three-cylinder rotor compressor commonly used in the industry, the compressor has a more compact overall structure due to the adoption of the piston-rotor composite compression structure, and is particularly suitable for a limited installation space of a refrigerator.

[0047] It should be noted that the first piston compression part and the second piston compression part in the application can suck refrigerant in the external circulation pipeline and compress the refrigerant in parallel, the refrigerant compressed by the first piston compression part and the second piston compression part is collected and discharged into the rotor compression part for secondary compression, so that the suction capacity of the compressor can be significantly improved, and the overall performance and refrigerating capacity of the compressor can be improved.

[0048] 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 comprises a rotor 12, the rotor 12 is sleeved on the eccentric part of the crankshaft assembly 6, the crankshaft assembly 6 is driven to rotate by a motor assembly (not shown in the figure) and in turn drives the translation (i.e. swing) of the rotor 12, the translated 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, so that the rotor compression part and the two piston compression parts can be driven to operate by one set of motor assembly, and the structure is simple and compact.

[0049] As described above, the rotor compression part comprises a rotor 12, a first end of the vane 11 is hinged to the rotor 12 (specifically through a hinge 115 arranged at the first end of the vane 11), a second end of the vane 11 is formed with a first inclined surface 111 corresponding to the first piston 21 and a second inclined surface 112 corresponding to the second piston 31, a first end of the first piston 21 is connected to a first end of the first connecting rod 22, and a first end of the second piston 31 is connected to a first end of the second connecting rod 32, a second end of the first connecting rod 22 is slidingly connected to the first inclined surface 111, and a second end of the second connecting rod 32 is slidingly connected to the second inclined surface 112.

[0050] The first inclined surface 111 and the second inclined surface 112 are arranged at the second end of the sliding sheet 11, and the height difference of the inclined surfaces is converted into the force applied to the piston, so that the structure design is novel and the structure design of the compressor can be further simplified. The inclination of the first inclined surface 111 and the second inclined surface 112 is reasonably selected according to the compression ratio and the compression stroke of the corresponding piston compression part.

[0051] 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 has a first sliding groove 113, and the second inclined surface 112 has 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 slides in the first sliding groove 113, and the second end of the second connecting rod 32 slides 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 piston.

[0052] In an embodiment, the first inclined surface 111 and the second inclined surface 112 can be used only for applying force to the compression stroke of the corresponding piston, and the suction stroke of the piston can be realized by arranging other structures, such as a reset spring in the cylinder, and 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, and the anti-disengagement structure 23 is arranged in the first sliding groove 113 or the second sliding groove 114. At this time, it can be understood that the slot of the first sliding groove 113 and the second sliding groove 114 is respectively arranged in the closed opening for limiting the disengagement of the anti-disengagement structure 23 from the slot, and the anti-disengagement structure 23 can be a spherical end, for example. In the technical solution, the second end of the first connecting rod 22 and the second connecting rod 32 is respectively slidably connected in the corresponding sliding groove through the anti-disengagement structure 23, so that the linear reciprocating motion of the sliding sheet 11 can be used to compress and exhaust the refrigerant in the piston compression part and to suck the refrigerant in the piston compression part.

[0053] For a more detailed description Figures 7 to 9As shown, in some embodiments, the three-cylinder compressor further comprises a cylinder block, the cylinder block comprises a cylinder block body 4, a first cylinder hole 401 corresponding to the rotor compression part is arranged on the cylinder block body 4, a second cylinder hole 402 corresponding to the first piston compression part is arranged on the cylinder block body 4, and a third cylinder hole 403 corresponding to the second piston compression part is arranged on the cylinder block body 4. The first cylinder hole 401 penetrates the first side surface and the second side surface of the cylinder block body 4 along the axial direction, a sliding vane groove 42 is arranged on the hole wall of the first cylinder hole 401, the sliding vane 11 is slidably arranged in the sliding vane groove 42, and the second cylinder hole 402 and the third cylinder hole 403 are respectively arranged on the opposite two side groove walls of the sliding vane groove 42. It can be understood that the first side surface and the second side surface corresponding to the first cylinder hole 401 are connected with end flanges (not shown in the figure), and the second cylinder hole 402 and the third cylinder hole 403 are provided with corresponding cylinder head assemblies (not shown in the figure). The cylinder head assembly can be a cylinder head assembly known in the industry, that is, it has a suction valve plate and an exhaust valve plate and other related structures. Specifically, the sliding vane groove 42 penetrates the first side surface and the second side surface, 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.

[0054] In the technical scheme, the first cylinder hole 401, the second cylinder hole 402 and the third cylinder hole 403 are arranged on the cylinder block body 4, so that the three compression parts in the three-cylinder pump body assembly can be arranged on one component, thereby simplifying the structure of the pump body assembly, making the structure of the pump body assembly more compact, reducing the volume of the components, and further reducing the excessive occupation of the compressor installation space.

[0055] Specifically referring to Figure 7 As shown, in a preferred embodiment, a first sound attenuation cavity 431 and a second sound attenuation cavity 432 are arranged on the first side surface of the cylinder block body 4. The first sound attenuation cavity 431 is in communication with the exhaust of the second cylinder hole 402, the second sound attenuation cavity 432 is in communication with the exhaust of the third cylinder hole 403, the first sound attenuation cavity 431 and the second sound attenuation cavity 432 can be in communication, and one of the first sound attenuation cavity 431 or the second sound attenuation cavity 432 is in communication with the suction port 4011 of the first cylinder hole 401.

[0056] In the technical scheme, the first sound attenuation cavity 431 and the second sound attenuation cavity 432 corresponding to the exhaust of the second cylinder hole 402 and the third cylinder hole 403 are arranged on the cylinder block body 4, which can effectively reduce the exhaust noise of the compressor. At the same time, the exhaust refrigerant can form a buffer and flow regulation in the sound attenuation cavity, which is also beneficial to reduce the suction noise of the rotor compression part.

[0057] In a preferred embodiment, the cylinder block further comprises an exhaust communication pipe 5, one end of which 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 of the first muffling cavity 431 and the second muffling cavity 432, and avoid the structural limitation caused by the arrangement of the sliding vane 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 cover bodies (not marked in the figure) corresponding to the first muffling cavity 431 and the second muffling cavity 432. The cover bodies can be welded to the two ends of the pipe body of the exhaust communication pipe 5, and the exhaust communication pipe 5 is connected with the corresponding muffling cavities through the two cover bodies.

[0058] 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 surface and perpendicular to the central 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). In this way, the height of the two piston compression parts and the rotor compression part can be effectively reduced, and the overall structure of the compressor can be further compacted, which is especially suitable for working conditions with limited installation height space.

[0059] In a preferred embodiment, the first inclined surface 111 and the second inclined surface 112 are mirror images, specifically, the first inclined surface 111 and the second inclined surface 112 are symmetric about the central symmetry plane of the sliding vane groove 42. In this way, the first piston compression part and the second piston compression part are also symmetric about the central symmetry plane, and the overall force balance of the machine is good, which can reduce the vibration of the pump body assembly caused by unbalanced force.

[0060] 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 with the second cylinder bore 402 and the third cylinder bore 403 has a plurality of first connecting holes 442, which are used to connect the aforementioned cylinder head assembly and are arranged around the second cylinder bore 402 and the third cylinder bore 403; and / or the first side surface and the second side surface are further provided 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.

[0061] In a preferred embodiment, the cylinder block body 4 is further configured with a first exhaust communication hole 451 for communicating the exhaust cavity of the cylinder head assembly with the first muffling cavity 431, and a second exhaust communication hole 452 for communicating the exhaust cavity of the cylinder head assembly with the second muffling cavity 432. Specifically, the first exhaust communication hole 451 and the second exhaust communication hole 452 are both linearly extending through holes, and their specific positions correspond to the exhaust cavity (where the exhaust valve plate is located) in the cylinder head assembly.

[0062] 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. The three-cylinder compressor further comprises a shell (not shown in the figure), which is provided with a suction pipe and an exhaust pipe. The suction pipe is only arranged on the shell to communicate with the inner cavity of the shell, so that the refrigerant entering the inner cavity of the shell can be sucked by the first piston compression part and the second piston compression part. 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.

[0063] According to the embodiments of the present application, a refrigerator is also provided, which comprises the three-cylinder compressor described above.

[0064] The above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above description is only the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cylinder seat, characterized in that, The three-cylinder pump body assembly is used in a three-cylinder pump body assembly. The three-cylinder pump body assembly has a rotor compression section, a first piston compression section and a second piston compression section. The cylinder seat includes a cylinder seat body (4). The cylinder seat body (4) has a first cylinder hole (401) corresponding to the rotor compression section, a second cylinder hole (402) corresponding to the first piston compression section and a third cylinder hole (403) corresponding to the second piston compression section. 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 vane groove (42) is constructed on the hole wall of the first cylinder hole (401). The vane (11) of the rotor compression section slides in the 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 vane groove (42).

2. The cylinder seat according to claim 1, 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).

3. The cylinder seat according to claim 2, characterized in that, The second cylinder bore (402) is coaxially arranged with the third cylinder bore (403), and 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).

4. The cylinder seat according to claim 3, 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).

5. The cylinder seat according to claim 4, 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).

6. The cylinder seat according to claim 4, characterized in that, The first side and the second side are also provided with a second connection hole (441) for connecting the end flange.

7. The cylinder seat according to claim 2, 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).

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